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MMC core:

Browse Source 
- Support for MMC power sequences.
 - SDIO function devicetree subnode parsing.
 - Refactor the hardware reset routines and enable it for SD cards.
 - Various code quality improvements, especially for slot-gpio.
 
 MMC host:
 - dw_mmc: Various fixes and cleanups.
 - dw_mmc: Convert to mmc_send_tuning().
 - moxart: Fix probe logic.
 - sdhci: Various fixes and cleanups
 - sdhci: Asynchronous request handling support.
 - sdhci-pxav3: Various fixes and cleanups.
 - sdhci-tegra: Fixes for T114, T124 and T132.
 - rtsx: Various fixes and cleanups.
 - rtsx: Support for SDIO.
 - sdhi/tmio: Refactor and cleanup of header files.
 - omap_hsmmc: Use slot-gpio and common MMC DT parser.
 - Make all hosts to deal with errors from mmc_of_parse().
 - sunxi: Various fixes and cleanups.
 - sdhci: Support for Fujitsu SDHCI controller f_sdh30.
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Merge tag 'mmc-v3.20-1' of git://git.linaro.org/people/ulf.hansson/mmc

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Support for MMC power sequences.
   - SDIO function devicetree subnode parsing.
   - Refactor the hardware reset routines and enable it for SD cards.
   - Various code quality improvements, especially for slot-gpio.

  MMC host:
   - dw_mmc: Various fixes and cleanups.
   - dw_mmc: Convert to mmc_send_tuning().
   - moxart: Fix probe logic.
   - sdhci: Various fixes and cleanups
   - sdhci: Asynchronous request handling support.
   - sdhci-pxav3: Various fixes and cleanups.
   - sdhci-tegra: Fixes for T114, T124 and T132.
   - rtsx: Various fixes and cleanups.
   - rtsx: Support for SDIO.
   - sdhi/tmio: Refactor and cleanup of header files.
   - omap_hsmmc: Use slot-gpio and common MMC DT parser.
   - Make all hosts to deal with errors from mmc_of_parse().
   - sunxi: Various fixes and cleanups.
   - sdhci: Support for Fujitsu SDHCI controller f_sdh30"

* tag 'mmc-v3.20-1' of git://git.linaro.org/people/ulf.hansson/mmc: (117 commits)
  mmc: sdhci-s3c: solve problem with sleeping in atomic context
  mmc: pwrseq: add driver for emmc hardware reset
  mmc: moxart: fix probe logic
  mmc: core: Invoke mmc_pwrseq_post_power_on() prior MMC_POWER_ON state
  mmc: pwrseq_simple: Add optional reference clock support
  mmc: pwrseq: Document optional clock for the simple power sequence
  mmc: pwrseq_simple: Extend to support more pins
  mmc: pwrseq: Document that simple sequence support more than one GPIO
  mmc: Add hardware dependencies for sdhci-pxav3 and sdhci-pxav2
  mmc: sdhci-pxav3: Modify clock settings for the SDR50 and DDR50 modes
  mmc: sdhci-pxav3: Extend binding with SDIO3 conf reg for the Armada 38x
  mmc: sdhci-pxav3: Fix Armada 38x controller's caps according to erratum ERR-7878951
  mmc: sdhci-pxav3: Fix SDR50 and DDR50 capabilities for the Armada 38x flavor
  mmc: sdhci: switch voltage before sdhci_set_ios in runtime resume
  mmc: tegra: Write xfer_mode, CMD regs in together
  mmc: Resolve BKOPS compatability issue
  mmc: sdhci-pxav3: fix setting of pdata->clk_delay_cycles
  mmc: dw_mmc: rockchip: remove incorrect __exit_p()
  mmc: dw_mmc: exynos: remove incorrect __exit_p()
  mmc: Fix menuconfig alignment of MMC_SDHCI_* options
  ...
This commit is contained in:
Linus Torvalds 2015-02-11 10:56:48 -08:00
commit aa7ed01f93
68 changed files with 2163 additions and 1191 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
Documentation/devicetree/bindings/mmc/mmc-pwrseq-emmc.txt Normal file
View File

@ -0,0 +1,25 @@
* The simple eMMC hardware reset provider
The purpose of this driver is to perform standard eMMC hw reset
procedure, as descibed by Jedec 4.4 specification. This procedure is
performed just after MMC core enabled power to the given mmc host (to
fix possible issues if bootloader has left eMMC card in initialized or
unknown state), and before performing complete system reboot (also in
case of emergency reboot call). The latter is needed on boards, which
doesn't have hardware reset logic connected to emmc card and (limited or
broken) ROM bootloaders are unable to read second stage from the emmc
card if the card is left in unknown or already initialized state.
Required properties:
- compatible : contains "mmc-pwrseq-emmc".
- reset-gpios : contains a GPIO specifier. The reset GPIO is asserted
and then deasserted to perform eMMC card reset. To perform
reset procedure as described in Jedec 4.4 specification, the
gpio line should be defined as GPIO_ACTIVE_LOW.
Example:
sdhci0_pwrseq {
compatible = "mmc-pwrseq-emmc";
reset-gpios = <&gpio1 12 GPIO_ACTIVE_LOW>;
}

25
Documentation/devicetree/bindings/mmc/mmc-pwrseq-simple.txt Normal file
View File

@ -0,0 +1,25 @@
* The simple MMC power sequence provider
The purpose of the simple MMC power sequence provider is to supports a set of
common properties between various SOC designs. It thus enables us to use the
same provider for several SOC designs.
Required properties:
- compatible : contains "mmc-pwrseq-simple".
Optional properties:
- reset-gpios : contains a list of GPIO specifiers. The reset GPIOs are asserted
at initialization and prior we start the power up procedure of the card.
They will be de-asserted right after the power has been provided to the
card.
- clocks : Must contain an entry for the entry in clock-names.
See ../clocks/clock-bindings.txt for details.
- clock-names : Must include the following entry:
"ext_clock" (External clock provided to the card).
Example:
sdhci0_pwrseq {
compatible = "mmc-pwrseq-simple";
reset-gpios = <&gpio1 12 0>;
}

62
Documentation/devicetree/bindings/mmc/mmc.txt
View File

@ -64,7 +64,43 @@ Optional SDIO properties:
- keep-power-in-suspend: Preserves card power during a suspend/resume cycle
- enable-sdio-wakeup: Enables wake up of host system on SDIO IRQ assertion
Example:
MMC power sequences:
--------------------
System on chip designs may specify a specific MMC power sequence. To
successfully detect an (e)MMC/SD/SDIO card, that power sequence must be
maintained while initializing the card.
Optional property:
- mmc-pwrseq: phandle to the MMC power sequence node. See "mmc-pwrseq-*"
for documentation of MMC power sequence bindings.
Use of Function subnodes
------------------------
On embedded systems the cards connected to a host may need additional
properties. These can be specified in subnodes to the host controller node.
The subnodes are identified by the standard 'reg' property.
Which information exactly can be specified depends on the bindings for the
SDIO function driver for the subnode, as specified by the compatible string.
Required host node properties when using function subnodes:
- #address-cells: should be one. The cell is the slot id.
- #size-cells: should be zero.
Required function subnode properties:
- compatible: name of SDIO function following generic names recommended practice
- reg: Must contain the SDIO function number of the function this subnode
describes. A value of 0 denotes the memory SD function, values from
1 to 7 denote the SDIO functions.
Examples
--------
Basic example:
sdhci@ab000000 {
compatible = "sdhci";
@ -77,4 +113,28 @@ sdhci@ab000000 {
max-frequency = <50000000>;
keep-power-in-suspend;
enable-sdio-wakeup;
mmc-pwrseq = <&sdhci0_pwrseq>
}
Example with sdio function subnode:
mmc3: mmc@01c12000 {
#address-cells = <1>;
#size-cells = <0>;
pinctrl-names = "default";
pinctrl-0 = <&mmc3_pins_a>;
vmmc-supply = <&reg_vmmc3>;
bus-width = <4>;
non-removable;
mmc-pwrseq = <&sdhci0_pwrseq>
status = "okay";
brcmf: bcrmf@1 {
reg = <1>;
compatible = "brcm,bcm43xx-fmac";
interrupt-parent = <&pio>;
interrupts = <10 8>; /* PH10 / EINT10 */
interrupt-names = "host-wake";
};
};

30
Documentation/devicetree/bindings/mmc/sdhci-fujitsu.txt Normal file
View File

@ -0,0 +1,30 @@
* Fujitsu SDHCI controller
This file documents differences between the core properties in mmc.txt
and the properties used by the sdhci_f_sdh30 driver.
Required properties:
- compatible: "fujitsu,mb86s70-sdhci-3.0"
- clocks: Must contain an entry for each entry in clock-names. It is a
list of phandles and clock-specifier pairs.
See ../clocks/clock-bindings.txt for details.
- clock-names: Should contain the following two entries:
"iface" - clock used for sdhci interface
"core" - core clock for sdhci controller
Optional properties:
- vqmmc-supply: phandle to the regulator device tree node, mentioned
as the VCCQ/VDD_IO supply in the eMMC/SD specs.
Example:
sdhci1: mmc@36600000 {
compatible = "fujitsu,mb86s70-sdhci-3.0";
reg = <0 0x36600000 0x1000>;
interrupts = <0 172 0x4>,
<0 173 0x4>;
bus-width = <4>;
vqmmc-supply = <&vccq_sdhci1>;
clocks = <&clock 2 2 0>, <&clock 2 3 0>;
clock-names = "iface", "core";
};

15
Documentation/devicetree/bindings/mmc/sdhci-pxa.txt
View File

@ -9,9 +9,13 @@ Required properties:
- reg:
* for "mrvl,pxav2-mmc" and "mrvl,pxav3-mmc", one register area for
the SDHCI registers.
* for "marvell,armada-380-sdhci", two register areas. The first one
for the SDHCI registers themselves, and the second one for the
AXI/Mbus bridge registers of the SDHCI unit.
* for "marvell,armada-380-sdhci", three register areas. The first
one for the SDHCI registers themselves, the second one for the
AXI/Mbus bridge registers of the SDHCI unit, the third one for the
SDIO3 Configuration register
- reg names: should be "sdhci", "mbus", "conf-sdio3". only mandatory
for "marvell,armada-380-sdhci"
- clocks: Array of clocks required for SDHCI; requires at least one for
I/O clock.
- clock-names: Array of names corresponding to clocks property; shall be
@ -35,7 +39,10 @@ sdhci@d4280800 {
sdhci@d8000 {
compatible = "marvell,armada-380-sdhci";
reg = <0xd8000 0x1000>, <0xdc000 0x100>;
reg-names = "sdhci", "mbus", "conf-sdio3";
reg = <0xd8000 0x1000>,
<0xdc000 0x100>;
<0x18454 0x4>;
interrupts = <0 25 0x4>;
clocks = <&gateclk 17>;
clock-names = "io";

2
arch/arm/mach-omap2/board-omap3pandora.c
View File

@ -254,12 +254,14 @@ static void pandora_wl1251_init_card(struct mmc_card *card)
* We have TI wl1251 attached to MMC3. Pass this information to
* SDIO core because it can't be probed by normal methods.
*/
if (card->type == MMC_TYPE_SDIO || card->type == MMC_TYPE_SD_COMBO) {
card->quirks |= MMC_QUIRK_NONSTD_SDIO;
card->cccr.wide_bus = 1;
card->cis.vendor = 0x104c;
card->cis.device = 0x9066;
card->cis.blksize = 512;
card->cis.max_dtr = 20000000;
}
}
static struct omap2_hsmmc_info omap3pandora_mmc[] = {

6
drivers/mmc/card/block.c
View File

@ -2147,7 +2147,7 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card,
*/
snprintf(md->disk->disk_name, sizeof(md->disk->disk_name),
"mmcblk%d%s", md->name_idx, subname ? subname : "");
"mmcblk%u%s", md->name_idx, subname ? subname : "");
if (mmc_card_mmc(card))
blk_queue_logical_block_size(md->queue.queue,
@ -2193,7 +2193,6 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card,
static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card)
{
sector_t size;
struct mmc_blk_data *md;
if (!mmc_card_sd(card) && mmc_card_blockaddr(card)) {
/*
@ -2209,9 +2208,8 @@ static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card)
size = card->csd.capacity << (card->csd.read_blkbits - 9);
}
md = mmc_blk_alloc_req(card, &card->dev, size, false, NULL,
return mmc_blk_alloc_req(card, &card->dev, size, false, NULL,
MMC_BLK_DATA_AREA_MAIN);
return md;
}
static int mmc_blk_alloc_part(struct mmc_card *card,

18
drivers/mmc/card/mmc_test.c
View File

@ -2342,20 +2342,16 @@ static int mmc_test_hw_reset(struct mmc_test_card *test)
struct mmc_host *host = card->host;
int err;
err = mmc_hw_reset_check(host);
if (!err)
return RESULT_OK;
if (err == -ENOSYS)
return RESULT_FAIL;
if (err != -EOPNOTSUPP)
return err;
if (!mmc_can_reset(card))
if (!mmc_card_mmc(card) || !mmc_can_reset(card))
return RESULT_UNSUP_CARD;
err = mmc_hw_reset(host);
if (!err)
return RESULT_OK;
else if (err == -EOPNOTSUPP)
return RESULT_UNSUP_HOST;
return RESULT_FAIL;
}
static const struct mmc_test_case mmc_test_cases[] = {

2
drivers/mmc/core/Makefile
View File

@ -8,5 +8,5 @@ mmc_core-y := core.o bus.o host.o \
sdio.o sdio_ops.o sdio_bus.o \
sdio_cis.o sdio_io.o sdio_irq.o \
quirks.o slot-gpio.o
mmc_core-$(CONFIG_OF) += pwrseq.o pwrseq_simple.o pwrseq_emmc.o
mmc_core-$(CONFIG_DEBUG_FS) += debugfs.o

4
drivers/mmc/core/bus.c
View File

@ -16,6 +16,7 @@
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/stat.h>
#include <linux/of.h>
#include <linux/pm_runtime.h>
#include <linux/mmc/card.h>
@ -321,6 +322,8 @@ int mmc_add_card(struct mmc_card *card)
#endif
mmc_init_context_info(card->host);
card->dev.of_node = mmc_of_find_child_device(card->host, 0);
ret = device_add(&card->dev);
if (ret)
return ret;
@ -349,6 +352,7 @@ void mmc_remove_card(struct mmc_card *card)
mmc_hostname(card->host), card->rca);
}
device_del(&card->dev);
of_node_put(card->dev.of_node);
}
put_device(&card->dev);

170
drivers/mmc/core/core.c
View File

@ -40,6 +40,7 @@
#include "bus.h"
#include "host.h"
#include "sdio_bus.h"
#include "pwrseq.h"
#include "mmc_ops.h"
#include "sd_ops.h"
@ -185,13 +186,14 @@ void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq)
EXPORT_SYMBOL(mmc_request_done);
static void
mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
static int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
{
#ifdef CONFIG_MMC_DEBUG
unsigned int i, sz;
struct scatterlist *sg;
#endif
if (mmc_card_removed(host->card))
return -ENOMEDIUM;
if (mrq->sbc) {
pr_debug("<%s: starting CMD%u arg %08x flags %08x>\n",
@ -251,6 +253,8 @@ mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
mmc_host_clk_hold(host);
led_trigger_event(host->led, LED_FULL);
host->ops->request(host, mrq);
return 0;
}
/**
@ -271,7 +275,7 @@ void mmc_start_bkops(struct mmc_card *card, bool from_exception)
BUG_ON(!card);
if (!card->ext_csd.bkops_en || mmc_card_doing_bkops(card))
if (!card->ext_csd.man_bkops_en || mmc_card_doing_bkops(card))
return;
err = mmc_read_bkops_status(card);
@ -345,29 +349,34 @@ static void mmc_wait_done(struct mmc_request *mrq)
*/
static int __mmc_start_data_req(struct mmc_host *host, struct mmc_request *mrq)
{
int err;
mrq->done = mmc_wait_data_done;
mrq->host = host;
if (mmc_card_removed(host->card)) {
mrq->cmd->error = -ENOMEDIUM;
mmc_wait_data_done(mrq);
return -ENOMEDIUM;
}
mmc_start_request(host, mrq);
return 0;
err = mmc_start_request(host, mrq);
if (err) {
mrq->cmd->error = err;
mmc_wait_data_done(mrq);
}
return err;
}
static int __mmc_start_req(struct mmc_host *host, struct mmc_request *mrq)
{
int err;
init_completion(&mrq->completion);
mrq->done = mmc_wait_done;
if (mmc_card_removed(host->card)) {
mrq->cmd->error = -ENOMEDIUM;
err = mmc_start_request(host, mrq);
if (err) {
mrq->cmd->error = err;
complete(&mrq->completion);
return -ENOMEDIUM;
}
mmc_start_request(host, mrq);
return 0;
return err;
}
/*
@ -1077,6 +1086,30 @@ void mmc_set_ungated(struct mmc_host *host)
}
#endif
int mmc_execute_tuning(struct mmc_card *card)
{
struct mmc_host *host = card->host;
u32 opcode;
int err;
if (!host->ops->execute_tuning)
return 0;
if (mmc_card_mmc(card))
opcode = MMC_SEND_TUNING_BLOCK_HS200;
else
opcode = MMC_SEND_TUNING_BLOCK;
mmc_host_clk_hold(host);
err = host->ops->execute_tuning(host, opcode);
mmc_host_clk_release(host);
if (err)
pr_err("%s: tuning execution failed\n", mmc_hostname(host));
return err;
}
/*
* Change the bus mode (open drain/push-pull) of a host.
*/
@ -1232,6 +1265,34 @@ EXPORT_SYMBOL(mmc_of_parse_voltage);
#endif /* CONFIG_OF */
static int mmc_of_get_func_num(struct device_node *node)
{
u32 reg;
int ret;
ret = of_property_read_u32(node, "reg", &reg);
if (ret < 0)
return ret;
return reg;
}
struct device_node *mmc_of_find_child_device(struct mmc_host *host,
unsigned func_num)
{
struct device_node *node;
if (!host->parent || !host->parent->of_node)
return NULL;
for_each_child_of_node(host->parent->of_node, node) {
if (mmc_of_get_func_num(node) == func_num)
return node;
}
return NULL;
}
#ifdef CONFIG_REGULATOR
/**
@ -1555,6 +1616,8 @@ void mmc_power_up(struct mmc_host *host, u32 ocr)
mmc_host_clk_hold(host);
mmc_pwrseq_pre_power_on(host);
host->ios.vdd = fls(ocr) - 1;
host->ios.power_mode = MMC_POWER_UP;
/* Set initial state and call mmc_set_ios */
@ -1574,6 +1637,8 @@ void mmc_power_up(struct mmc_host *host, u32 ocr)
*/
mmc_delay(10);
mmc_pwrseq_post_power_on(host);
host->ios.clock = host->f_init;
host->ios.power_mode = MMC_POWER_ON;
@ -1595,6 +1660,8 @@ void mmc_power_off(struct mmc_host *host)
mmc_host_clk_hold(host);
mmc_pwrseq_power_off(host);
host->ios.clock = 0;
host->ios.vdd = 0;
@ -2245,67 +2312,28 @@ static void mmc_hw_reset_for_init(struct mmc_host *host)
mmc_host_clk_release(host);
}
int mmc_can_reset(struct mmc_card *card)
{
u8 rst_n_function;
if (!mmc_card_mmc(card))
return 0;
rst_n_function = card->ext_csd.rst_n_function;
if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED)
return 0;
return 1;
}
EXPORT_SYMBOL(mmc_can_reset);
static int mmc_do_hw_reset(struct mmc_host *host, int check)
{
struct mmc_card *card = host->card;
if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->hw_reset)
return -EOPNOTSUPP;
if (!card)
return -EINVAL;
if (!mmc_can_reset(card))
return -EOPNOTSUPP;
mmc_host_clk_hold(host);
mmc_set_clock(host, host->f_init);
host->ops->hw_reset(host);
/* If the reset has happened, then a status command will fail */
if (check) {
u32 status;
if (!mmc_send_status(card, &status)) {
mmc_host_clk_release(host);
return -ENOSYS;
}
}
/* Set initial state and call mmc_set_ios */
mmc_set_initial_state(host);
mmc_host_clk_release(host);
return host->bus_ops->power_restore(host);
}
int mmc_hw_reset(struct mmc_host *host)
{
return mmc_do_hw_reset(host, 0);
int ret;
if (!host->card)
return -EINVAL;
mmc_bus_get(host);
if (!host->bus_ops || host->bus_dead || !host->bus_ops->reset) {
mmc_bus_put(host);
return -EOPNOTSUPP;
}
ret = host->bus_ops->reset(host);
mmc_bus_put(host);
pr_warn("%s: tried to reset card\n", mmc_hostname(host));
return ret;
}
EXPORT_SYMBOL(mmc_hw_reset);
int mmc_hw_reset_check(struct mmc_host *host)
{
return mmc_do_hw_reset(host, 1);
}
EXPORT_SYMBOL(mmc_hw_reset_check);
static int mmc_rescan_try_freq(struct mmc_host *host, unsigned freq)
{
host->f_init = freq;

7
drivers/mmc/core/core.h
View File

@ -27,11 +27,15 @@ struct mmc_bus_ops {
int (*power_restore)(struct mmc_host *);
int (*alive)(struct mmc_host *);
int (*shutdown)(struct mmc_host *);
int (*reset)(struct mmc_host *);
};
void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops);
void mmc_detach_bus(struct mmc_host *host);
struct device_node *mmc_of_find_child_device(struct mmc_host *host,
unsigned func_num);
void mmc_init_erase(struct mmc_card *card);
void mmc_set_chip_select(struct mmc_host *host, int mode);
@ -82,5 +86,8 @@ void mmc_add_card_debugfs(struct mmc_card *card);
void mmc_remove_card_debugfs(struct mmc_card *card);
void mmc_init_context_info(struct mmc_host *host);
int mmc_execute_tuning(struct mmc_card *card);
#endif

65
drivers/mmc/core/host.c
View File

@ -29,13 +29,20 @@
#include "core.h"
#include "host.h"
#include "slot-gpio.h"
#include "pwrseq.h"
#define cls_dev_to_mmc_host(d) container_of(d, struct mmc_host, class_dev)
static DEFINE_IDR(mmc_host_idr);
static DEFINE_SPINLOCK(mmc_host_lock);
static void mmc_host_classdev_release(struct device *dev)
{
struct mmc_host *host = cls_dev_to_mmc_host(dev);
mutex_destroy(&host->slot.lock);
spin_lock(&mmc_host_lock);
idr_remove(&mmc_host_idr, host->index);
spin_unlock(&mmc_host_lock);
kfree(host);
}
@ -54,9 +61,6 @@ void mmc_unregister_host_class(void)
class_unregister(&mmc_host_class);
}
static DEFINE_IDR(mmc_host_idr);
static DEFINE_SPINLOCK(mmc_host_lock);
#ifdef CONFIG_MMC_CLKGATE
static ssize_t clkgate_delay_show(struct device *dev,
struct device_attribute *attr, char *buf)
@ -367,16 +371,10 @@ int mmc_of_parse(struct mmc_host *host)
ret = mmc_gpiod_request_cd(host, "cd", 0, true,
0, &cd_gpio_invert);
if (ret) {
if (ret == -EPROBE_DEFER)
return ret;
if (ret != -ENOENT) {
dev_err(host->parent,
"Failed to request CD GPIO: %d\n",
ret);
}
} else
if (!ret)
dev_info(host->parent, "Got CD GPIO\n");
else if (ret != -ENOENT)
return ret;
/*
* There are two ways to flag that the CD line is inverted:
@ -397,16 +395,10 @@ int mmc_of_parse(struct mmc_host *host)
ro_cap_invert = of_property_read_bool(np, "wp-inverted");
ret = mmc_gpiod_request_ro(host, "wp", 0, false, 0, &ro_gpio_invert);
if (ret) {
if (ret == -EPROBE_DEFER)
goto out;
if (ret != -ENOENT) {
dev_err(host->parent,
"Failed to request WP GPIO: %d\n",
ret);
}
} else
if (!ret)
dev_info(host->parent, "Got WP GPIO\n");
else if (ret != -ENOENT)
return ret;
/* See the comment on CD inversion above */
if (ro_cap_invert ^ ro_gpio_invert)
@ -457,11 +449,7 @@ int mmc_of_parse(struct mmc_host *host)
host->dsr_req = 0;
}
return 0;
out:
mmc_gpio_free_cd(host);
return ret;
return mmc_pwrseq_alloc(host);
}
EXPORT_SYMBOL(mmc_of_parse);
@ -491,8 +479,10 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
host->index = err;
spin_unlock(&mmc_host_lock);
idr_preload_end();
if (err < 0)
goto free;
if (err < 0) {
kfree(host);
return NULL;
}
dev_set_name(&host->class_dev, "mmc%d", host->index);
@ -501,10 +491,12 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
host->class_dev.class = &mmc_host_class;
device_initialize(&host->class_dev);
mmc_host_clk_init(host);
if (mmc_gpio_alloc(host)) {
put_device(&host->class_dev);
return NULL;
}
mutex_init(&host->slot.lock);
host->slot.cd_irq = -EINVAL;
mmc_host_clk_init(host);
spin_lock_init(&host->lock);
init_waitqueue_head(&host->wq);
@ -525,10 +517,6 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
host->max_blk_count = PAGE_CACHE_SIZE / 512;
return host;
free:
kfree(host);
return NULL;
}
EXPORT_SYMBOL(mmc_alloc_host);
@ -601,10 +589,7 @@ EXPORT_SYMBOL(mmc_remove_host);
*/
void mmc_free_host(struct mmc_host *host)
{
spin_lock(&mmc_host_lock);
idr_remove(&mmc_host_idr, host->index);
spin_unlock(&mmc_host_lock);
mmc_pwrseq_free(host);
put_device(&host->class_dev);
}

101
drivers/mmc/core/mmc.c
View File

@ -483,11 +483,13 @@ static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd)
/* check whether the eMMC card supports BKOPS */
if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) {
card->ext_csd.bkops = 1;
card->ext_csd.bkops_en = ext_csd[EXT_CSD_BKOPS_EN];
card->ext_csd.man_bkops_en =
(ext_csd[EXT_CSD_BKOPS_EN] &
EXT_CSD_MANUAL_BKOPS_MASK);
card->ext_csd.raw_bkops_status =
ext_csd[EXT_CSD_BKOPS_STATUS];
if (!card->ext_csd.bkops_en)
pr_info("%s: BKOPS_EN bit is not set\n",
if (!card->ext_csd.man_bkops_en)
pr_info("%s: MAN_BKOPS_EN bit is not set\n",
mmc_hostname(card->host));
}
@ -1155,38 +1157,6 @@ bus_speed:
return err;
}
const u8 tuning_blk_pattern_4bit[MMC_TUNING_BLK_PATTERN_4BIT_SIZE] = {
0xff, 0x0f, 0xff, 0x00, 0xff, 0xcc, 0xc3, 0xcc,
0xc3, 0x3c, 0xcc, 0xff, 0xfe, 0xff, 0xfe, 0xef,
0xff, 0xdf, 0xff, 0xdd, 0xff, 0xfb, 0xff, 0xfb,
0xbf, 0xff, 0x7f, 0xff, 0x77, 0xf7, 0xbd, 0xef,
0xff, 0xf0, 0xff, 0xf0, 0x0f, 0xfc, 0xcc, 0x3c,
0xcc, 0x33, 0xcc, 0xcf, 0xff, 0xef, 0xff, 0xee,
0xff, 0xfd, 0xff, 0xfd, 0xdf, 0xff, 0xbf, 0xff,
0xbb, 0xff, 0xf7, 0xff, 0xf7, 0x7f, 0x7b, 0xde,
};
EXPORT_SYMBOL(tuning_blk_pattern_4bit);
const u8 tuning_blk_pattern_8bit[MMC_TUNING_BLK_PATTERN_8BIT_SIZE] = {
0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00,
0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc, 0xcc,
0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff, 0xff,
0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee, 0xff,
0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd, 0xdd,
0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff, 0xbb,
0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff, 0xff,
0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee, 0xff,
0xff, 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00,
0x00, 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc,
0xcc, 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff,
0xff, 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee,
0xff, 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd,
0xdd, 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff,
0xbb, 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff,
0xff, 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee,
};
EXPORT_SYMBOL(tuning_blk_pattern_8bit);
/*
* Execute tuning sequence to seek the proper bus operating
* conditions for HS200 and HS400, which sends CMD21 to the device.
@ -1194,7 +1164,6 @@ EXPORT_SYMBOL(tuning_blk_pattern_8bit);
static int mmc_hs200_tuning(struct mmc_card *card)
{
struct mmc_host *host = card->host;
int err = 0;
/*
* Timing should be adjusted to the HS400 target
@ -1205,18 +1174,7 @@ static int mmc_hs200_tuning(struct mmc_card *card)
if (host->ops->prepare_hs400_tuning)
host->ops->prepare_hs400_tuning(host, &host->ios);
if (host->ops->execute_tuning) {
mmc_host_clk_hold(host);
err = host->ops->execute_tuning(host,
MMC_SEND_TUNING_BLOCK_HS200);
mmc_host_clk_release(host);
if (err)
pr_err("%s: tuning execution failed\n",
mmc_hostname(host));
}
return err;
return mmc_execute_tuning(card);
}
/*
@ -1296,6 +1254,12 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
}
/*
* Call the optional HC's init_card function to handle quirks.
*/
if (host->ops->init_card)
host->ops->init_card(host, card);
/*
* For native busses: set card RCA and quit open drain mode.
*/
@ -1821,6 +1785,46 @@ static int mmc_power_restore(struct mmc_host *host)
return ret;
}
int mmc_can_reset(struct mmc_card *card)
{
u8 rst_n_function;
rst_n_function = card->ext_csd.rst_n_function;
if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED)
return 0;
return 1;
}
EXPORT_SYMBOL(mmc_can_reset);
static int mmc_reset(struct mmc_host *host)
{
struct mmc_card *card = host->card;
u32 status;
if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->hw_reset)
return -EOPNOTSUPP;
if (!mmc_can_reset(card))
return -EOPNOTSUPP;
mmc_host_clk_hold(host);
mmc_set_clock(host, host->f_init);
host->ops->hw_reset(host);
/* If the reset has happened, then a status command will fail */
if (!mmc_send_status(card, &status)) {
mmc_host_clk_release(host);
return -ENOSYS;
}
/* Set initial state and call mmc_set_ios */
mmc_set_initial_state(host);
mmc_host_clk_release(host);
return mmc_power_restore(host);
}
static const struct mmc_bus_ops mmc_ops = {
.remove = mmc_remove,
.detect = mmc_detect,
@ -1831,6 +1835,7 @@ static const struct mmc_bus_ops mmc_ops = {
.power_restore = mmc_power_restore,
.alive = mmc_alive,
.shutdown = mmc_shutdown,
.reset = mmc_reset,
};
/*

30
drivers/mmc/core/mmc_ops.c
View File

@ -23,6 +23,36 @@
#define MMC_OPS_TIMEOUT_MS (10 * 60 * 1000) /* 10 minute timeout */
static const u8 tuning_blk_pattern_4bit[] = {
0xff, 0x0f, 0xff, 0x00, 0xff, 0xcc, 0xc3, 0xcc,
0xc3, 0x3c, 0xcc, 0xff, 0xfe, 0xff, 0xfe, 0xef,
0xff, 0xdf, 0xff, 0xdd, 0xff, 0xfb, 0xff, 0xfb,
0xbf, 0xff, 0x7f, 0xff, 0x77, 0xf7, 0xbd, 0xef,
0xff, 0xf0, 0xff, 0xf0, 0x0f, 0xfc, 0xcc, 0x3c,
0xcc, 0x33, 0xcc, 0xcf, 0xff, 0xef, 0xff, 0xee,
0xff, 0xfd, 0xff, 0xfd, 0xdf, 0xff, 0xbf, 0xff,
0xbb, 0xff, 0xf7, 0xff, 0xf7, 0x7f, 0x7b, 0xde,
};
static const u8 tuning_blk_pattern_8bit[] = {
0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00,
0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc, 0xcc,
0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff, 0xff,
0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee, 0xff,
0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd, 0xdd,
0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff, 0xbb,
0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff, 0xff,
0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee, 0xff,
0xff, 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00,
0x00, 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc,
0xcc, 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff,
0xff, 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee,
0xff, 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd,
0xdd, 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff,
0xbb, 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff,
0xff, 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee,
};
static inline int __mmc_send_status(struct mmc_card *card, u32 *status,
bool ignore_crc)
{

112
drivers/mmc/core/pwrseq.c Normal file
View File

@ -0,0 +1,112 @@
/*
* Copyright (C) 2014 Linaro Ltd
*
* Author: Ulf Hansson <ulf.hansson@linaro.org>
*
* License terms: GNU General Public License (GPL) version 2
*
* MMC power sequence management
*/
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/err.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/mmc/host.h>
#include "pwrseq.h"
struct mmc_pwrseq_match {
const char *compatible;
int (*alloc)(struct mmc_host *host, struct device *dev);
};
static struct mmc_pwrseq_match pwrseq_match[] = {
{
.compatible = "mmc-pwrseq-simple",
.alloc = mmc_pwrseq_simple_alloc,
}, {
.compatible = "mmc-pwrseq-emmc",
.alloc = mmc_pwrseq_emmc_alloc,
},
};
static struct mmc_pwrseq_match *mmc_pwrseq_find(struct device_node *np)
{
struct mmc_pwrseq_match *match = ERR_PTR(-ENODEV);
int i;
for (i = 0; i < ARRAY_SIZE(pwrseq_match); i++) {
if (of_device_is_compatible(np, pwrseq_match[i].compatible)) {
match = &pwrseq_match[i];
break;
}
}
return match;
}
int mmc_pwrseq_alloc(struct mmc_host *host)
{
struct platform_device *pdev;
struct device_node *np;
struct mmc_pwrseq_match *match;
int ret = 0;
np = of_parse_phandle(host->parent->of_node, "mmc-pwrseq", 0);
if (!np)
return 0;
pdev = of_find_device_by_node(np);
if (!pdev) {
ret = -ENODEV;
goto err;
}
match = mmc_pwrseq_find(np);
if (IS_ERR(match)) {
ret = PTR_ERR(match);
goto err;
}
ret = match->alloc(host, &pdev->dev);
if (!ret)
dev_info(host->parent, "allocated mmc-pwrseq\n");
err:
of_node_put(np);
return ret;
}
void mmc_pwrseq_pre_power_on(struct mmc_host *host)
{
struct mmc_pwrseq *pwrseq = host->pwrseq;
if (pwrseq && pwrseq->ops && pwrseq->ops->pre_power_on)
pwrseq->ops->pre_power_on(host);
}
void mmc_pwrseq_post_power_on(struct mmc_host *host)
{
struct mmc_pwrseq *pwrseq = host->pwrseq;
if (pwrseq && pwrseq->ops && pwrseq->ops->post_power_on)
pwrseq->ops->post_power_on(host);
}
void mmc_pwrseq_power_off(struct mmc_host *host)
{
struct mmc_pwrseq *pwrseq = host->pwrseq;
if (pwrseq && pwrseq->ops && pwrseq->ops->power_off)
pwrseq->ops->power_off(host);
}
void mmc_pwrseq_free(struct mmc_host *host)
{
struct mmc_pwrseq *pwrseq = host->pwrseq;
if (pwrseq && pwrseq->ops && pwrseq->ops->free)
pwrseq->ops->free(host);
}

43
drivers/mmc/core/pwrseq.h Normal file
View File

@ -0,0 +1,43 @@
/*
* Copyright (C) 2014 Linaro Ltd
*
* Author: Ulf Hansson <ulf.hansson@linaro.org>
*
* License terms: GNU General Public License (GPL) version 2
*/
#ifndef _MMC_CORE_PWRSEQ_H
#define _MMC_CORE_PWRSEQ_H
struct mmc_pwrseq_ops {
void (*pre_power_on)(struct mmc_host *host);
void (*post_power_on)(struct mmc_host *host);
void (*power_off)(struct mmc_host *host);
void (*free)(struct mmc_host *host);
};
struct mmc_pwrseq {
struct mmc_pwrseq_ops *ops;
};
#ifdef CONFIG_OF
int mmc_pwrseq_alloc(struct mmc_host *host);
void mmc_pwrseq_pre_power_on(struct mmc_host *host);
void mmc_pwrseq_post_power_on(struct mmc_host *host);
void mmc_pwrseq_power_off(struct mmc_host *host);
void mmc_pwrseq_free(struct mmc_host *host);
int mmc_pwrseq_simple_alloc(struct mmc_host *host, struct device *dev);
int mmc_pwrseq_emmc_alloc(struct mmc_host *host, struct device *dev);
#else
static inline int mmc_pwrseq_alloc(struct mmc_host *host) { return 0; }
static inline void mmc_pwrseq_pre_power_on(struct mmc_host *host) {}
static inline void mmc_pwrseq_post_power_on(struct mmc_host *host) {}
static inline void mmc_pwrseq_power_off(struct mmc_host *host) {}
static inline void mmc_pwrseq_free(struct mmc_host *host) {}
#endif
#endif

101
drivers/mmc/core/pwrseq_emmc.c Normal file
View File

@ -0,0 +1,101 @@
/*
* Copyright (C) 2015, Samsung Electronics Co., Ltd.
*
* Author: Marek Szyprowski <m.szyprowski@samsung.com>
*
* License terms: GNU General Public License (GPL) version 2
*
* Simple eMMC hardware reset provider
*/
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/gpio/consumer.h>
#include <linux/reboot.h>
#include <linux/mmc/host.h>
#include "pwrseq.h"
struct mmc_pwrseq_emmc {
struct mmc_pwrseq pwrseq;
struct notifier_block reset_nb;
struct gpio_desc *reset_gpio;
};
static void __mmc_pwrseq_emmc_reset(struct mmc_pwrseq_emmc *pwrseq)
{
gpiod_set_value(pwrseq->reset_gpio, 1);
udelay(1);
gpiod_set_value(pwrseq->reset_gpio, 0);
udelay(200);
}
static void mmc_pwrseq_emmc_reset(struct mmc_host *host)
{
struct mmc_pwrseq_emmc *pwrseq = container_of(host->pwrseq,
struct mmc_pwrseq_emmc, pwrseq);
__mmc_pwrseq_emmc_reset(pwrseq);
}
static void mmc_pwrseq_emmc_free(struct mmc_host *host)
{
struct mmc_pwrseq_emmc *pwrseq = container_of(host->pwrseq,
struct mmc_pwrseq_emmc, pwrseq);
unregister_restart_handler(&pwrseq->reset_nb);
gpiod_put(pwrseq->reset_gpio);
kfree(pwrseq);
host->pwrseq = NULL;
}
static struct mmc_pwrseq_ops mmc_pwrseq_emmc_ops = {
.post_power_on = mmc_pwrseq_emmc_reset,
.free = mmc_pwrseq_emmc_free,
};
static int mmc_pwrseq_emmc_reset_nb(struct notifier_block *this,
unsigned long mode, void *cmd)
{
struct mmc_pwrseq_emmc *pwrseq = container_of(this,
struct mmc_pwrseq_emmc, reset_nb);
__mmc_pwrseq_emmc_reset(pwrseq);
return NOTIFY_DONE;
}
int mmc_pwrseq_emmc_alloc(struct mmc_host *host, struct device *dev)
{
struct mmc_pwrseq_emmc *pwrseq;
int ret = 0;
pwrseq = kzalloc(sizeof(struct mmc_pwrseq_emmc), GFP_KERNEL);
if (!pwrseq)
return -ENOMEM;
pwrseq->reset_gpio = gpiod_get_index(dev, "reset", 0, GPIOD_OUT_LOW);
if (IS_ERR(pwrseq->reset_gpio)) {
ret = PTR_ERR(pwrseq->reset_gpio);
goto free;
}
/*
* register reset handler to ensure emmc reset also from
* emergency_reboot(), priority 129 schedules it just before
* system reboot
*/
pwrseq->reset_nb.notifier_call = mmc_pwrseq_emmc_reset_nb;
pwrseq->reset_nb.priority = 129;
register_restart_handler(&pwrseq->reset_nb);
pwrseq->pwrseq.ops = &mmc_pwrseq_emmc_ops;
host->pwrseq = &pwrseq->pwrseq;
return 0;
free:
kfree(pwrseq);
return ret;
}

145
drivers/mmc/core/pwrseq_simple.c Normal file
View File

@ -0,0 +1,145 @@
/*
* Copyright (C) 2014 Linaro Ltd
*
* Author: Ulf Hansson <ulf.hansson@linaro.org>
*
* License terms: GNU General Public License (GPL) version 2
*
* Simple MMC power sequence management
*/
#include <linux/clk.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/of_gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/mmc/host.h>
#include "pwrseq.h"
struct mmc_pwrseq_simple {
struct mmc_pwrseq pwrseq;
bool clk_enabled;
struct clk *ext_clk;
int nr_gpios;
struct gpio_desc *reset_gpios[0];
};
static void mmc_pwrseq_simple_set_gpios_value(struct mmc_pwrseq_simple *pwrseq,
int value)
{
int i;
for (i = 0; i < pwrseq->nr_gpios; i++)
if (!IS_ERR(pwrseq->reset_gpios[i]))
gpiod_set_value_cansleep(pwrseq->reset_gpios[i], value);
}
static void mmc_pwrseq_simple_pre_power_on(struct mmc_host *host)
{
struct mmc_pwrseq_simple *pwrseq = container_of(host->pwrseq,
struct mmc_pwrseq_simple, pwrseq);
if (!IS_ERR(pwrseq->ext_clk) && !pwrseq->clk_enabled) {
clk_prepare_enable(pwrseq->ext_clk);
pwrseq->clk_enabled = true;
}
mmc_pwrseq_simple_set_gpios_value(pwrseq, 1);
}
static void mmc_pwrseq_simple_post_power_on(struct mmc_host *host)
{
struct mmc_pwrseq_simple *pwrseq = container_of(host->pwrseq,
struct mmc_pwrseq_simple, pwrseq);
mmc_pwrseq_simple_set_gpios_value(pwrseq, 0);
}
static void mmc_pwrseq_simple_power_off(struct mmc_host *host)
{
struct mmc_pwrseq_simple *pwrseq = container_of(host->pwrseq,
struct mmc_pwrseq_simple, pwrseq);
mmc_pwrseq_simple_set_gpios_value(pwrseq, 1);
if (!IS_ERR(pwrseq->ext_clk) && pwrseq->clk_enabled) {
clk_disable_unprepare(pwrseq->ext_clk);
pwrseq->clk_enabled = false;
}
}
static void mmc_pwrseq_simple_free(struct mmc_host *host)
{
struct mmc_pwrseq_simple *pwrseq = container_of(host->pwrseq,
struct mmc_pwrseq_simple, pwrseq);
int i;
for (i = 0; i < pwrseq->nr_gpios; i++)
if (!IS_ERR(pwrseq->reset_gpios[i]))
gpiod_put(pwrseq->reset_gpios[i]);
if (!IS_ERR(pwrseq->ext_clk))
clk_put(pwrseq->ext_clk);
kfree(pwrseq);
host->pwrseq = NULL;
}
static struct mmc_pwrseq_ops mmc_pwrseq_simple_ops = {
.pre_power_on = mmc_pwrseq_simple_pre_power_on,
.post_power_on = mmc_pwrseq_simple_post_power_on,
.power_off = mmc_pwrseq_simple_power_off,
.free = mmc_pwrseq_simple_free,
};
int mmc_pwrseq_simple_alloc(struct mmc_host *host, struct device *dev)
{
struct mmc_pwrseq_simple *pwrseq;
int i, nr_gpios, ret = 0;
nr_gpios = of_gpio_named_count(dev->of_node, "reset-gpios");
if (nr_gpios < 0)
nr_gpios = 0;
pwrseq = kzalloc(sizeof(struct mmc_pwrseq_simple) + nr_gpios *
sizeof(struct gpio_desc *), GFP_KERNEL);
if (!pwrseq)
return -ENOMEM;
pwrseq->ext_clk = clk_get(dev, "ext_clock");
if (IS_ERR(pwrseq->ext_clk) &&
PTR_ERR(pwrseq->ext_clk) != -ENOENT) {
ret = PTR_ERR(pwrseq->ext_clk);
goto free;
}
for (i = 0; i < nr_gpios; i++) {
pwrseq->reset_gpios[i] = gpiod_get_index(dev, "reset", i,
GPIOD_OUT_HIGH);
if (IS_ERR(pwrseq->reset_gpios[i]) &&
PTR_ERR(pwrseq->reset_gpios[i]) != -ENOENT &&
PTR_ERR(pwrseq->reset_gpios[i]) != -ENOSYS) {
ret = PTR_ERR(pwrseq->reset_gpios[i]);
while (--i)
gpiod_put(pwrseq->reset_gpios[i]);
goto clk_put;
}
}
pwrseq->nr_gpios = nr_gpios;
pwrseq->pwrseq.ops = &mmc_pwrseq_simple_ops;
host->pwrseq = &pwrseq->pwrseq;
return 0;
clk_put:
if (!IS_ERR(pwrseq->ext_clk))
clk_put(pwrseq->ext_clk);
free:
kfree(pwrseq);
return ret;
}

25
drivers/mmc/core/sd.c
View File

@ -660,15 +660,10 @@ static int mmc_sd_init_uhs_card(struct mmc_card *card)
* SPI mode doesn't define CMD19 and tuning is only valid for SDR50 and
* SDR104 mode SD-cards. Note that tuning is mandatory for SDR104.
*/
if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning &&
if (!mmc_host_is_spi(card->host) &&
(card->sd_bus_speed == UHS_SDR50_BUS_SPEED ||
card->sd_bus_speed == UHS_SDR104_BUS_SPEED)) {
mmc_host_clk_hold(card->host);
err = card->host->ops->execute_tuning(card->host,
MMC_SEND_TUNING_BLOCK);
mmc_host_clk_release(card->host);
}
card->sd_bus_speed == UHS_SDR104_BUS_SPEED))
err = mmc_execute_tuning(card);
out:
kfree(status);
@ -932,6 +927,12 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
}
/*
* Call the optional HC's init_card function to handle quirks.
*/
if (host->ops->init_card)
host->ops->init_card(host, card);
/*
* For native busses: get card RCA and quit open drain mode.
*/
@ -1191,6 +1192,12 @@ static int mmc_sd_power_restore(struct mmc_host *host)
return ret;
}
static int mmc_sd_reset(struct mmc_host *host)
{
mmc_power_cycle(host, host->card->ocr);
return mmc_sd_power_restore(host);
}
static const struct mmc_bus_ops mmc_sd_ops = {
.remove = mmc_sd_remove,
.detect = mmc_sd_detect,
@ -1201,6 +1208,7 @@ static const struct mmc_bus_ops mmc_sd_ops = {
.power_restore = mmc_sd_power_restore,
.alive = mmc_sd_alive,
.shutdown = mmc_sd_suspend,
.reset = mmc_sd_reset,
};
/*
@ -1271,4 +1279,3 @@ err:
return err;
}

12
drivers/mmc/core/sdio.c
View File

@ -567,17 +567,11 @@ static int mmc_sdio_init_uhs_card(struct mmc_card *card)
* SPI mode doesn't define CMD19 and tuning is only valid for SDR50 and
* SDR104 mode SD-cards. Note that tuning is mandatory for SDR104.
*/
if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning &&
if (!mmc_host_is_spi(card->host) &&
((card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR50) ||
(card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR104))) {
mmc_host_clk_hold(card->host);
err = card->host->ops->execute_tuning(card->host,
MMC_SEND_TUNING_BLOCK);
mmc_host_clk_release(card->host);
}
(card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR104)))
err = mmc_execute_tuning(card);
out:
return err;
}

11
drivers/mmc/core/sdio_bus.c
View File

@ -22,7 +22,9 @@
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
#include <linux/mmc/sdio_func.h>
#include <linux/of.h>
#include "core.h"
#include "sdio_cis.h"
#include "sdio_bus.h"
@ -295,6 +297,13 @@ static void sdio_acpi_set_handle(struct sdio_func *func)
static inline void sdio_acpi_set_handle(struct sdio_func *func) {}
#endif
static void sdio_set_of_node(struct sdio_func *func)
{
struct mmc_host *host = func->card->host;
func->dev.of_node = mmc_of_find_child_device(host, func->num);
}
/*
* Register a new SDIO function with the driver model.
*/
@ -304,6 +313,7 @@ int sdio_add_func(struct sdio_func *func)
dev_set_name(&func->dev, "%s:%d", mmc_card_id(func->card), func->num);
sdio_set_of_node(func);
sdio_acpi_set_handle(func);
ret = device_add(&func->dev);
if (ret == 0) {
@ -327,6 +337,7 @@ void sdio_remove_func(struct sdio_func *func)
dev_pm_domain_detach(&func->dev, false);
device_del(&func->dev);
of_node_put(func->dev.of_node);
put_device(&func->dev);
}

170
drivers/mmc/core/slot-gpio.c
View File

@ -18,11 +18,14 @@
#include <linux/module.h>
#include <linux/slab.h>
#include "slot-gpio.h"
struct mmc_gpio {
struct gpio_desc *ro_gpio;
struct gpio_desc *cd_gpio;
bool override_ro_active_level;
bool override_cd_active_level;
irqreturn_t (*cd_gpio_isr)(int irq, void *dev_id);
char *ro_label;
char cd_label[0];
};
@ -38,31 +41,19 @@ static irqreturn_t mmc_gpio_cd_irqt(int irq, void *dev_id)
return IRQ_HANDLED;
}
static int mmc_gpio_alloc(struct mmc_host *host)
int mmc_gpio_alloc(struct mmc_host *host)
{
size_t len = strlen(dev_name(host->parent)) + 4;
struct mmc_gpio *ctx;
struct mmc_gpio *ctx = devm_kzalloc(host->parent,
sizeof(*ctx) + 2 * len, GFP_KERNEL);
mutex_lock(&host->slot.lock);
ctx = host->slot.handler_priv;
if (!ctx) {
/*
* devm_kzalloc() can be called after device_initialize(), even
* before device_add(), i.e., between mmc_alloc_host() and
* mmc_add_host()
*/
ctx = devm_kzalloc(&host->class_dev, sizeof(*ctx) + 2 * len,
GFP_KERNEL);
if (ctx) {
ctx->ro_label = ctx->cd_label + len;
snprintf(ctx->cd_label, len, "%s cd", dev_name(host->parent));
snprintf(ctx->ro_label, len, "%s ro", dev_name(host->parent));
host->slot.handler_priv = ctx;
host->slot.cd_irq = -EINVAL;
}
}
mutex_unlock(&host->slot.lock);
return ctx ? 0 : -ENOMEM;
}
@ -103,29 +94,19 @@ EXPORT_SYMBOL(mmc_gpio_get_cd);
* @gpio: gpio number requested
*
* As devm_* managed functions are used in mmc_gpio_request_ro(), client
* drivers do not need to explicitly call mmc_gpio_free_ro() for freeing up,
* if the requesting and freeing are only needed at probing and unbinding time
* for once. However, if client drivers do something special like runtime
* switching for write-protection, they are responsible for calling
* mmc_gpio_request_ro() and mmc_gpio_free_ro() as a pair on their own.
* drivers do not need to worry about freeing up memory.
*
* Returns zero on success, else an error.
*/
int mmc_gpio_request_ro(struct mmc_host *host, unsigned int gpio)
{
struct mmc_gpio *ctx;
struct mmc_gpio *ctx = host->slot.handler_priv;
int ret;
if (!gpio_is_valid(gpio))
return -EINVAL;
ret = mmc_gpio_alloc(host);
if (ret < 0)
return ret;
ctx = host->slot.handler_priv;
ret = devm_gpio_request_one(&host->class_dev, gpio, GPIOF_DIR_IN,
ret = devm_gpio_request_one(host->parent, gpio, GPIOF_DIR_IN,
ctx->ro_label);
if (ret < 0)
return ret;
@ -156,8 +137,10 @@ void mmc_gpiod_request_cd_irq(struct mmc_host *host)
irq = -EINVAL;
if (irq >= 0) {
ret = devm_request_threaded_irq(&host->class_dev, irq,
NULL, mmc_gpio_cd_irqt,
if (!ctx->cd_gpio_isr)
ctx->cd_gpio_isr = mmc_gpio_cd_irqt;
ret = devm_request_threaded_irq(host->parent, irq,
NULL, ctx->cd_gpio_isr,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
ctx->cd_label, host);
if (ret < 0)
@ -171,6 +154,19 @@ void mmc_gpiod_request_cd_irq(struct mmc_host *host)
}
EXPORT_SYMBOL(mmc_gpiod_request_cd_irq);
/* Register an alternate interrupt service routine for
* the card-detect GPIO.
*/
void mmc_gpio_set_cd_isr(struct mmc_host *host,
irqreturn_t (*isr)(int irq, void *dev_id))
{
struct mmc_gpio *ctx = host->slot.handler_priv;
WARN_ON(ctx->cd_gpio_isr);
ctx->cd_gpio_isr = isr;
}
EXPORT_SYMBOL(mmc_gpio_set_cd_isr);
/**
* mmc_gpio_request_cd - request a gpio for card-detection
* @host: mmc host
@ -178,11 +174,7 @@ EXPORT_SYMBOL(mmc_gpiod_request_cd_irq);
* @debounce: debounce time in microseconds
*
* As devm_* managed functions are used in mmc_gpio_request_cd(), client
* drivers do not need to explicitly call mmc_gpio_free_cd() for freeing up,
* if the requesting and freeing are only needed at probing and unbinding time
* for once. However, if client drivers do something special like runtime
* switching for card-detection, they are responsible for calling
* mmc_gpio_request_cd() and mmc_gpio_free_cd() as a pair on their own.
* drivers do not need to worry about freeing up memory.
*
* If GPIO debouncing is desired, set the debounce parameter to a non-zero
* value. The caller is responsible for ensuring that the GPIO driver associated
@ -193,16 +185,10 @@ EXPORT_SYMBOL(mmc_gpiod_request_cd_irq);
int mmc_gpio_request_cd(struct mmc_host *host, unsigned int gpio,
unsigned int debounce)
{
struct mmc_gpio *ctx;
struct mmc_gpio *ctx = host->slot.handler_priv;
int ret;
ret = mmc_gpio_alloc(host);
if (ret < 0)
return ret;
ctx = host->slot.handler_priv;
ret = devm_gpio_request_one(&host->class_dev, gpio, GPIOF_DIR_IN,
ret = devm_gpio_request_one(host->parent, gpio, GPIOF_DIR_IN,
ctx->cd_label);
if (ret < 0)
/*
@ -225,55 +211,6 @@ int mmc_gpio_request_cd(struct mmc_host *host, unsigned int gpio,
}
EXPORT_SYMBOL(mmc_gpio_request_cd);
/**
* mmc_gpio_free_ro - free the write-protection gpio
* @host: mmc host
*
* It's provided only for cases that client drivers need to manually free
* up the write-protection gpio requested by mmc_gpio_request_ro().
*/
void mmc_gpio_free_ro(struct mmc_host *host)
{
struct mmc_gpio *ctx = host->slot.handler_priv;
int gpio;
if (!ctx || !ctx->ro_gpio)
return;
gpio = desc_to_gpio(ctx->ro_gpio);
ctx->ro_gpio = NULL;
devm_gpio_free(&host->class_dev, gpio);
}
EXPORT_SYMBOL(mmc_gpio_free_ro);
/**
* mmc_gpio_free_cd - free the card-detection gpio
* @host: mmc host
*
* It's provided only for cases that client drivers need to manually free
* up the card-detection gpio requested by mmc_gpio_request_cd().
*/
void mmc_gpio_free_cd(struct mmc_host *host)
{
struct mmc_gpio *ctx = host->slot.handler_priv;
int gpio;
if (!ctx || !ctx->cd_gpio)
return;
if (host->slot.cd_irq >= 0) {
devm_free_irq(&host->class_dev, host->slot.cd_irq, host);
host->slot.cd_irq = -EINVAL;
}
gpio = desc_to_gpio(ctx->cd_gpio);
ctx->cd_gpio = NULL;
devm_gpio_free(&host->class_dev, gpio);
}
EXPORT_SYMBOL(mmc_gpio_free_cd);
/**
* mmc_gpiod_request_cd - request a gpio descriptor for card-detection
* @host: mmc host
@ -285,8 +222,7 @@ EXPORT_SYMBOL(mmc_gpio_free_cd);
* to NULL to ignore
*
* Use this function in place of mmc_gpio_request_cd() to use the GPIO
* descriptor API. Note that it is paired with mmc_gpiod_free_cd() not
* mmc_gpio_free_cd(). Note also that it must be called prior to mmc_add_host()
* descriptor API. Note that it must be called prior to mmc_add_host()
* otherwise the caller must also call mmc_gpiod_request_cd_irq().
*
* Returns zero on success, else an error.
@ -295,16 +231,10 @@ int mmc_gpiod_request_cd(struct mmc_host *host, const char *con_id,
unsigned int idx, bool override_active_level,
unsigned int debounce, bool *gpio_invert)
{
struct mmc_gpio *ctx;
struct mmc_gpio *ctx = host->slot.handler_priv;
struct gpio_desc *desc;
int ret;
ret = mmc_gpio_alloc(host);
if (ret < 0)
return ret;
ctx = host->slot.handler_priv;
if (!con_id)
con_id = ctx->cd_label;
@ -339,8 +269,7 @@ EXPORT_SYMBOL(mmc_gpiod_request_cd);
* set to NULL to ignore
*
* Use this function in place of mmc_gpio_request_ro() to use the GPIO
* descriptor API. Note that it is paired with mmc_gpiod_free_ro() not
* mmc_gpio_free_ro().
* descriptor API.
*
* Returns zero on success, else an error.
*/
@ -348,16 +277,10 @@ int mmc_gpiod_request_ro(struct mmc_host *host, const char *con_id,
unsigned int idx, bool override_active_level,
unsigned int debounce, bool *gpio_invert)
{
struct mmc_gpio *ctx;
struct mmc_gpio *ctx = host->slot.handler_priv;
struct gpio_desc *desc;
int ret;
ret = mmc_gpio_alloc(host);
if (ret < 0)
return ret;
ctx = host->slot.handler_priv;
if (!con_id)
con_id = ctx->ro_label;
@ -380,28 +303,3 @@ int mmc_gpiod_request_ro(struct mmc_host *host, const char *con_id,
return 0;
}
EXPORT_SYMBOL(mmc_gpiod_request_ro);
/**
* mmc_gpiod_free_cd - free the card-detection gpio descriptor
* @host: mmc host
*
* It's provided only for cases that client drivers need to manually free
* up the card-detection gpio requested by mmc_gpiod_request_cd().
*/
void mmc_gpiod_free_cd(struct mmc_host *host)
{
struct mmc_gpio *ctx = host->slot.handler_priv;
if (!ctx || !ctx->cd_gpio)
return;
if (host->slot.cd_irq >= 0) {
devm_free_irq(&host->class_dev, host->slot.cd_irq, host);
host->slot.cd_irq = -EINVAL;
}
devm_gpiod_put(host->parent, ctx->cd_gpio);
ctx->cd_gpio = NULL;
}
EXPORT_SYMBOL(mmc_gpiod_free_cd);

13
drivers/mmc/core/slot-gpio.h Normal file
View File

@ -0,0 +1,13 @@
/*
* Copyright (C) 2014 Linaro Ltd
*
* Author: Ulf Hansson <ulf.hansson@linaro.org>
*
* License terms: GNU General Public License (GPL) version 2
*/
#ifndef _MMC_CORE_SLOTGPIO_H
#define _MMC_CORE_SLOTGPIO_H
int mmc_gpio_alloc(struct mmc_host *host);
#endif

15
drivers/mmc/host/Kconfig
View File

@ -57,6 +57,7 @@ config MMC_SDHCI_IO_ACCESSORS
config MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER
bool
depends on MMC_SDHCI
select MMC_SDHCI_IO_ACCESSORS
help
This option is selected by drivers running on big endian hosts
@ -82,6 +83,7 @@ config MMC_SDHCI_PCI
config MMC_RICOH_MMC
bool "Ricoh MMC Controller Disabler"
depends on MMC_SDHCI_PCI
default y
help
This adds a pci quirk to disable Ricoh MMC Controller. This
proprietary controller is unnecessary because the SDHCI driver
@ -228,6 +230,7 @@ config MMC_SDHCI_PXAV3
tristate "Marvell MMP2 SD Host Controller support (PXAV3)"
depends on CLKDEV_LOOKUP
depends on MMC_SDHCI_PLTFM
depends on ARCH_MMP || COMPILE_TEST
default CPU_MMP2
help
This selects the Marvell(R) PXAV3 SD Host Controller.
@ -240,6 +243,7 @@ config MMC_SDHCI_PXAV2
tristate "Marvell PXA9XX SD Host Controller support (PXAV2)"
depends on CLKDEV_LOOKUP
depends on MMC_SDHCI_PLTFM
depends on ARCH_MMP || COMPILE_TEST
default CPU_PXA910
help
This selects the Marvell(R) PXAV2 SD Host Controller.
@ -292,6 +296,17 @@ config MMC_SDHCI_BCM2835
If unsure, say N.
config MMC_SDHCI_F_SDH30
tristate "SDHCI support for Fujitsu Semiconductor F_SDH30"
depends on MMC_SDHCI_PLTFM
depends on OF
help
This selects the Secure Digital Host Controller Interface (SDHCI)
Needed by some Fujitsu SoC for MMC / SD / SDIO support.
If you have a controller with this interface, say Y or M here.
If unsure, say N.
config MMC_MOXART
tristate "MOXART SD/MMC Host Controller support"
depends on ARCH_MOXART && MMC

1
drivers/mmc/host/Makefile
View File

@ -16,6 +16,7 @@ obj-$(CONFIG_MMC_SDHCI_PXAV3) += sdhci-pxav3.o
obj-$(CONFIG_MMC_SDHCI_PXAV2) += sdhci-pxav2.o
obj-$(CONFIG_MMC_SDHCI_S3C) += sdhci-s3c.o
obj-$(CONFIG_MMC_SDHCI_SIRF) += sdhci-sirf.o
obj-$(CONFIG_MMC_SDHCI_F_SDH30) += sdhci_f_sdh30.o
obj-$(CONFIG_MMC_SDHCI_SPEAR) += sdhci-spear.o
obj-$(CONFIG_MMC_WBSD) += wbsd.o
obj-$(CONFIG_MMC_AU1X) += au1xmmc.o

113
drivers/mmc/host/dw_mmc-exynos.c
View File

@ -21,43 +21,7 @@
#include "dw_mmc.h"
#include "dw_mmc-pltfm.h"
#define NUM_PINS(x) (x + 2)
#define SDMMC_CLKSEL 0x09C
#define SDMMC_CLKSEL64 0x0A8
#define SDMMC_CLKSEL_CCLK_SAMPLE(x) (((x) & 7) << 0)
#define SDMMC_CLKSEL_CCLK_DRIVE(x) (((x) & 7) << 16)
#define SDMMC_CLKSEL_CCLK_DIVIDER(x) (((x) & 7) << 24)
#define SDMMC_CLKSEL_GET_DRV_WD3(x) (((x) >> 16) & 0x7)
#define SDMMC_CLKSEL_TIMING(x, y, z) (SDMMC_CLKSEL_CCLK_SAMPLE(x) | \
SDMMC_CLKSEL_CCLK_DRIVE(y) | \
SDMMC_CLKSEL_CCLK_DIVIDER(z))
#define SDMMC_CLKSEL_WAKEUP_INT BIT(11)
#define EXYNOS4210_FIXED_CIU_CLK_DIV 2
#define EXYNOS4412_FIXED_CIU_CLK_DIV 4
/* Block number in eMMC */
#define DWMCI_BLOCK_NUM 0xFFFFFFFF
#define SDMMC_EMMCP_BASE 0x1000
#define SDMMC_MPSECURITY (SDMMC_EMMCP_BASE + 0x0010)
#define SDMMC_MPSBEGIN0 (SDMMC_EMMCP_BASE + 0x0200)
#define SDMMC_MPSEND0 (SDMMC_EMMCP_BASE + 0x0204)
#define SDMMC_MPSCTRL0 (SDMMC_EMMCP_BASE + 0x020C)
/* SMU control bits */
#define DWMCI_MPSCTRL_SECURE_READ_BIT BIT(7)
#define DWMCI_MPSCTRL_SECURE_WRITE_BIT BIT(6)
#define DWMCI_MPSCTRL_NON_SECURE_READ_BIT BIT(5)
#define DWMCI_MPSCTRL_NON_SECURE_WRITE_BIT BIT(4)
#define DWMCI_MPSCTRL_USE_FUSE_KEY BIT(3)
#define DWMCI_MPSCTRL_ECB_MODE BIT(2)
#define DWMCI_MPSCTRL_ENCRYPTION BIT(1)
#define DWMCI_MPSCTRL_VALID BIT(0)
#define EXYNOS_CCLKIN_MIN 50000000 /* unit: HZ */
#include "dw_mmc-exynos.h"
/* Variations in Exynos specific dw-mshc controller */
enum dw_mci_exynos_type {
@ -114,11 +78,11 @@ static int dw_mci_exynos_priv_init(struct dw_mci *host)
if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS5420_SMU ||
priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) {
mci_writel(host, MPSBEGIN0, 0);
mci_writel(host, MPSEND0, DWMCI_BLOCK_NUM);
mci_writel(host, MPSCTRL0, DWMCI_MPSCTRL_SECURE_WRITE_BIT |
DWMCI_MPSCTRL_NON_SECURE_READ_BIT |
DWMCI_MPSCTRL_VALID |
DWMCI_MPSCTRL_NON_SECURE_WRITE_BIT);
mci_writel(host, MPSEND0, SDMMC_ENDING_SEC_NR_MAX);
mci_writel(host, MPSCTRL0, SDMMC_MPSCTRL_SECURE_WRITE_BIT |
SDMMC_MPSCTRL_NON_SECURE_READ_BIT |
SDMMC_MPSCTRL_VALID |
SDMMC_MPSCTRL_NON_SECURE_WRITE_BIT);
}
return 0;
@ -127,9 +91,9 @@ static int dw_mci_exynos_priv_init(struct dw_mci *host)
static int dw_mci_exynos_setup_clock(struct dw_mci *host)
{
struct dw_mci_exynos_priv_data *priv = host->priv;
unsigned long rate = clk_get_rate(host->ciu_clk);
host->bus_hz = rate / (priv->ciu_div + 1);
host->bus_hz /= (priv->ciu_div + 1);
return 0;
}
@ -232,8 +196,11 @@ static void dw_mci_exynos_set_ios(struct dw_mci *host, struct mmc_ios *ios)
mci_writel(host, CLKSEL, priv->sdr_timing);
}
/* Don't care if wanted clock is zero */
if (!wanted)
/*
* Don't care if wanted clock is zero or
* ciu clock is unavailable
*/
if (!wanted || IS_ERR(host->ciu_clk))
return;
/* Guaranteed minimum frequency for cclkin */
@ -263,10 +230,8 @@ static int dw_mci_exynos_parse_dt(struct dw_mci *host)
int ret;
priv = devm_kzalloc(host->dev, sizeof(*priv), GFP_KERNEL);
if (!priv) {
dev_err(host->dev, "mem alloc failed for private data\n");
if (!priv)
return -ENOMEM;
}
for (idx = 0; idx < ARRAY_SIZE(exynos_compat); idx++) {
if (of_device_is_compatible(np, exynos_compat[idx].compatible))
@ -375,64 +340,23 @@ out:
return loc;
}
static int dw_mci_exynos_execute_tuning(struct dw_mci_slot *slot, u32 opcode,
struct dw_mci_tuning_data *tuning_data)
static int dw_mci_exynos_execute_tuning(struct dw_mci_slot *slot)
{
struct dw_mci *host = slot->host;
struct mmc_host *mmc = slot->mmc;
const u8 *blk_pattern = tuning_data->blk_pattern;
u8 *blk_test;
unsigned int blksz = tuning_data->blksz;
u8 start_smpl, smpl, candiates = 0;
s8 found = -1;
int ret = 0;
blk_test = kmalloc(blksz, GFP_KERNEL);
if (!blk_test)
return -ENOMEM;
start_smpl = dw_mci_exynos_get_clksmpl(host);
do {
struct mmc_request mrq = {NULL};
struct mmc_command cmd = {0};
struct mmc_command stop = {0};
struct mmc_data data = {0};
struct scatterlist sg;
cmd.opcode = opcode;
cmd.arg = 0;
cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
stop.opcode = MMC_STOP_TRANSMISSION;
stop.arg = 0;
stop.flags = MMC_RSP_R1B | MMC_CMD_AC;
data.blksz = blksz;
data.blocks = 1;
data.flags = MMC_DATA_READ;
data.sg = &sg;
data.sg_len = 1;
sg_init_one(&sg, blk_test, blksz);
mrq.cmd = &cmd;
mrq.stop = &stop;
mrq.data = &data;
host->mrq = &mrq;
mci_writel(host, TMOUT, ~0);
smpl = dw_mci_exynos_move_next_clksmpl(host);
mmc_wait_for_req(mmc, &mrq);
if (!cmd.error && !data.error) {
if (!memcmp(blk_pattern, blk_test, blksz))
if (!mmc_send_tuning(mmc))
candiates |= (1 << smpl);
} else {
dev_dbg(host->dev,
"Tuning error: cmd.error:%d, data.error:%d\n",
cmd.error, data.error);
}
} while (start_smpl != smpl);
found = dw_mci_exynos_get_best_clksmpl(candiates);
@ -441,7 +365,6 @@ static int dw_mci_exynos_execute_tuning(struct dw_mci_slot *slot, u32 opcode,
else
ret = -EIO;
kfree(blk_test);
return ret;
}
@ -499,7 +422,7 @@ static const struct dev_pm_ops dw_mci_exynos_pmops = {
static struct platform_driver dw_mci_exynos_pltfm_driver = {
.probe = dw_mci_exynos_probe,
.remove = __exit_p(dw_mci_pltfm_remove),
.remove = dw_mci_pltfm_remove,
.driver = {
.name = "dwmmc_exynos",
.of_match_table = dw_mci_exynos_match,

56
drivers/mmc/host/dw_mmc-exynos.h Normal file
View File

@ -0,0 +1,56 @@
/*
* Exynos Specific Extensions for Synopsys DW Multimedia Card Interface driver
*
* Copyright (C) 2012-2014 Samsung Electronics Co., Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef _DW_MMC_EXYNOS_H_
#define _DW_MMC_EXYNOS_H_
/* Extended Register's Offset */
#define SDMMC_CLKSEL 0x09C
#define SDMMC_CLKSEL64 0x0A8
/* CLKSEL register defines */
#define SDMMC_CLKSEL_CCLK_SAMPLE(x) (((x) & 7) << 0)
#define SDMMC_CLKSEL_CCLK_DRIVE(x) (((x) & 7) << 16)
#define SDMMC_CLKSEL_CCLK_DIVIDER(x) (((x) & 7) << 24)
#define SDMMC_CLKSEL_GET_DRV_WD3(x) (((x) >> 16) & 0x7)
#define SDMMC_CLKSEL_TIMING(x, y, z) (SDMMC_CLKSEL_CCLK_SAMPLE(x) | \
SDMMC_CLKSEL_CCLK_DRIVE(y) | \
SDMMC_CLKSEL_CCLK_DIVIDER(z))
#define SDMMC_CLKSEL_WAKEUP_INT BIT(11)
/* Protector Register */
#define SDMMC_EMMCP_BASE 0x1000
#define SDMMC_MPSECURITY (SDMMC_EMMCP_BASE + 0x0010)
#define SDMMC_MPSBEGIN0 (SDMMC_EMMCP_BASE + 0x0200)
#define SDMMC_MPSEND0 (SDMMC_EMMCP_BASE + 0x0204)
#define SDMMC_MPSCTRL0 (SDMMC_EMMCP_BASE + 0x020C)
/* SMU control defines */
#define SDMMC_MPSCTRL_SECURE_READ_BIT BIT(7)
#define SDMMC_MPSCTRL_SECURE_WRITE_BIT BIT(6)
#define SDMMC_MPSCTRL_NON_SECURE_READ_BIT BIT(5)
#define SDMMC_MPSCTRL_NON_SECURE_WRITE_BIT BIT(4)
#define SDMMC_MPSCTRL_USE_FUSE_KEY BIT(3)
#define SDMMC_MPSCTRL_ECB_MODE BIT(2)
#define SDMMC_MPSCTRL_ENCRYPTION BIT(1)
#define SDMMC_MPSCTRL_VALID BIT(0)
/* Maximum number of Ending sector */
#define SDMMC_ENDING_SEC_NR_MAX 0xFFFFFFFF
/* Fixed clock divider */
#define EXYNOS4210_FIXED_CIU_CLK_DIV 2
#define EXYNOS4412_FIXED_CIU_CLK_DIV 4
/* Minimal required clock frequency for cclkin, unit: HZ */
#define EXYNOS_CCLKIN_MIN 50000000
#endif /* _DW_MMC_EXYNOS_H_ */

2
drivers/mmc/host/dw_mmc-rockchip.c
View File

@ -133,7 +133,7 @@ static SIMPLE_DEV_PM_OPS(dw_mci_rockchip_pmops,
static struct platform_driver dw_mci_rockchip_pltfm_driver = {
.probe = dw_mci_rockchip_probe,
.remove = __exit_p(dw_mci_pltfm_remove),
.remove = dw_mci_pltfm_remove,
.driver = {
.name = "dwmmc_rockchip",
.of_match_table = dw_mci_rockchip_match,

114
drivers/mmc/host/dw_mmc.c
View File

@ -27,6 +27,7 @@
#include <linux/stat.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/sd.h>
@ -313,7 +314,9 @@ static u32 dw_mci_prep_stop_abort(struct dw_mci *host, struct mmc_command *cmd)
if (cmdr == MMC_READ_SINGLE_BLOCK ||
cmdr == MMC_READ_MULTIPLE_BLOCK ||
cmdr == MMC_WRITE_BLOCK ||
cmdr == MMC_WRITE_MULTIPLE_BLOCK) {
cmdr == MMC_WRITE_MULTIPLE_BLOCK ||
cmdr == MMC_SEND_TUNING_BLOCK ||
cmdr == MMC_SEND_TUNING_BLOCK_HS200) {
stop->opcode = MMC_STOP_TRANSMISSION;
stop->arg = 0;
stop->flags = MMC_RSP_R1B | MMC_CMD_AC;
@ -758,6 +761,7 @@ disable:
static int dw_mci_submit_data_dma(struct dw_mci *host, struct mmc_data *data)
{
unsigned long irqflags;
int sg_len;
u32 temp;
@ -794,9 +798,11 @@ static int dw_mci_submit_data_dma(struct dw_mci *host, struct mmc_data *data)
mci_writel(host, CTRL, temp);
/* Disable RX/TX IRQs, let DMA handle it */
spin_lock_irqsave(&host->irq_lock, irqflags);
temp = mci_readl(host, INTMASK);
temp &= ~(SDMMC_INT_RXDR | SDMMC_INT_TXDR);
mci_writel(host, INTMASK, temp);
spin_unlock_irqrestore(&host->irq_lock, irqflags);
host->dma_ops->start(host, sg_len);
@ -805,6 +811,7 @@ static int dw_mci_submit_data_dma(struct dw_mci *host, struct mmc_data *data)
static void dw_mci_submit_data(struct dw_mci *host, struct mmc_data *data)
{
unsigned long irqflags;
u32 temp;
data->error = -EINPROGRESS;
@ -833,9 +840,12 @@ static void dw_mci_submit_data(struct dw_mci *host, struct mmc_data *data)
host->part_buf_count = 0;
mci_writel(host, RINTSTS, SDMMC_INT_TXDR | SDMMC_INT_RXDR);
spin_lock_irqsave(&host->irq_lock, irqflags);
temp = mci_readl(host, INTMASK);
temp |= SDMMC_INT_TXDR | SDMMC_INT_RXDR;
mci_writel(host, INTMASK, temp);
spin_unlock_irqrestore(&host->irq_lock, irqflags);
temp = mci_readl(host, CTRL);
temp &= ~SDMMC_CTRL_DMA_ENABLE;
@ -926,7 +936,7 @@ static void dw_mci_setup_bus(struct dw_mci_slot *slot, bool force_clkinit)
/* enable clock; only low power if no SDIO */
clk_en_a = SDMMC_CLKEN_ENABLE << slot->id;
if (!(mci_readl(host, INTMASK) & SDMMC_INT_SDIO(slot->sdio_id)))
if (!test_bit(DW_MMC_CARD_NO_LOW_PWR, &slot->flags))
clk_en_a |= SDMMC_CLKEN_LOW_PWR << slot->id;
mci_writel(host, CLKENA, clk_en_a);
@ -1109,6 +1119,12 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
return;
}
}
set_bit(DW_MMC_CARD_NEED_INIT, &slot->flags);
regs = mci_readl(slot->host, PWREN);
regs |= (1 << slot->id);
mci_writel(slot->host, PWREN, regs);
break;
case MMC_POWER_ON:
if (!IS_ERR(mmc->supply.vqmmc) && !slot->host->vqmmc_enabled) {
ret = regulator_enable(mmc->supply.vqmmc);
if (ret < 0)
@ -1117,10 +1133,6 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
else
slot->host->vqmmc_enabled = true;
}
set_bit(DW_MMC_CARD_NEED_INIT, &slot->flags);
regs = mci_readl(slot->host, PWREN);
regs |= (1 << slot->id);
mci_writel(slot->host, PWREN, regs);
break;
case MMC_POWER_OFF:
if (!IS_ERR(mmc->supply.vmmc))
@ -1245,53 +1257,58 @@ static int dw_mci_get_cd(struct mmc_host *mmc)
return present;
}
/*
* Disable lower power mode.
*
static void dw_mci_init_card(struct mmc_host *mmc, struct mmc_card *card)
{
struct dw_mci_slot *slot = mmc_priv(mmc);
struct dw_mci *host = slot->host;
/*
* Low power mode will stop the card clock when idle. According to the
* description of the CLKENA register we should disable low power mode
* for SDIO cards if we need SDIO interrupts to work.
*
* This function is fast if low power mode is already disabled.
*/
static void dw_mci_disable_low_power(struct dw_mci_slot *slot)
{
struct dw_mci *host = slot->host;
u32 clk_en_a;
if (mmc->caps & MMC_CAP_SDIO_IRQ) {
const u32 clken_low_pwr = SDMMC_CLKEN_LOW_PWR << slot->id;
u32 clk_en_a_old;
u32 clk_en_a;
clk_en_a = mci_readl(host, CLKENA);
clk_en_a_old = mci_readl(host, CLKENA);
if (clk_en_a & clken_low_pwr) {
mci_writel(host, CLKENA, clk_en_a & ~clken_low_pwr);
if (card->type == MMC_TYPE_SDIO ||
card->type == MMC_TYPE_SD_COMBO) {
set_bit(DW_MMC_CARD_NO_LOW_PWR, &slot->flags);
clk_en_a = clk_en_a_old & ~clken_low_pwr;
} else {
clear_bit(DW_MMC_CARD_NO_LOW_PWR, &slot->flags);
clk_en_a = clk_en_a_old | clken_low_pwr;
}
if (clk_en_a != clk_en_a_old) {
mci_writel(host, CLKENA, clk_en_a);
mci_send_cmd(slot, SDMMC_CMD_UPD_CLK |
SDMMC_CMD_PRV_DAT_WAIT, 0);
}
}
}
static void dw_mci_enable_sdio_irq(struct mmc_host *mmc, int enb)
{
struct dw_mci_slot *slot = mmc_priv(mmc);
struct dw_mci *host = slot->host;
unsigned long irqflags;
u32 int_mask;
spin_lock_irqsave(&host->irq_lock, irqflags);
/* Enable/disable Slot Specific SDIO interrupt */
int_mask = mci_readl(host, INTMASK);
if (enb) {
/*
* Turn off low power mode if it was enabled. This is a bit of
* a heavy operation and we disable / enable IRQs a lot, so
* we'll leave low power mode disabled and it will get
* re-enabled again in dw_mci_setup_bus().
*/
dw_mci_disable_low_power(slot);
if (enb)
int_mask |= SDMMC_INT_SDIO(slot->sdio_id);
else
int_mask &= ~SDMMC_INT_SDIO(slot->sdio_id);
mci_writel(host, INTMASK, int_mask);
mci_writel(host, INTMASK,
(int_mask | SDMMC_INT_SDIO(slot->sdio_id)));
} else {
mci_writel(host, INTMASK,
(int_mask & ~SDMMC_INT_SDIO(slot->sdio_id)));
}
spin_unlock_irqrestore(&host->irq_lock, irqflags);
}
static int dw_mci_execute_tuning(struct mmc_host *mmc, u32 opcode)
@ -1299,30 +1316,10 @@ static int dw_mci_execute_tuning(struct mmc_host *mmc, u32 opcode)
struct dw_mci_slot *slot = mmc_priv(mmc);
struct dw_mci *host = slot->host;
const struct dw_mci_drv_data *drv_data = host->drv_data;
struct dw_mci_tuning_data tuning_data;
int err = -ENOSYS;
if (opcode == MMC_SEND_TUNING_BLOCK_HS200) {
if (mmc->ios.bus_width == MMC_BUS_WIDTH_8) {
tuning_data.blk_pattern = tuning_blk_pattern_8bit;
tuning_data.blksz = sizeof(tuning_blk_pattern_8bit);
} else if (mmc->ios.bus_width == MMC_BUS_WIDTH_4) {
tuning_data.blk_pattern = tuning_blk_pattern_4bit;
tuning_data.blksz = sizeof(tuning_blk_pattern_4bit);
} else {
return -EINVAL;
}
} else if (opcode == MMC_SEND_TUNING_BLOCK) {
tuning_data.blk_pattern = tuning_blk_pattern_4bit;
tuning_data.blksz = sizeof(tuning_blk_pattern_4bit);
} else {
dev_err(host->dev,
"Undefined command(%d) for tuning\n", opcode);
return -EINVAL;
}
if (drv_data && drv_data->execute_tuning)
err = drv_data->execute_tuning(slot, opcode, &tuning_data);
err = drv_data->execute_tuning(slot);
return err;
}
@ -1337,7 +1334,7 @@ static const struct mmc_host_ops dw_mci_ops = {
.execute_tuning = dw_mci_execute_tuning,
.card_busy = dw_mci_card_busy,
.start_signal_voltage_switch = dw_mci_switch_voltage,
.init_card = dw_mci_init_card,
};
static void dw_mci_request_end(struct dw_mci *host, struct mmc_request *mrq)
@ -2319,9 +2316,9 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
#ifdef CONFIG_MMC_DW_IDMAC
mmc->max_segs = host->ring_size;
mmc->max_blk_size = 65536;
mmc->max_blk_count = host->ring_size;
mmc->max_seg_size = 0x1000;
mmc->max_req_size = mmc->max_seg_size * mmc->max_blk_count;
mmc->max_req_size = mmc->max_seg_size * host->ring_size;
mmc->max_blk_count = mmc->max_req_size / 512;
#else
mmc->max_segs = 64;
mmc->max_blk_size = 65536; /* BLKSIZ is 16 bits */
@ -2533,10 +2530,8 @@ static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host)
u32 clock_frequency;
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata) {
dev_err(dev, "could not allocate memory for pdata\n");
if (!pdata)
return ERR_PTR(-ENOMEM);
}
/* find out number of slots supported */
if (of_property_read_u32(dev->of_node, "num-slots",
@ -2660,6 +2655,7 @@ int dw_mci_probe(struct dw_mci *host)
host->quirks = host->pdata->quirks;
spin_lock_init(&host->lock);
spin_lock_init(&host->irq_lock);
INIT_LIST_HEAD(&host->queue);
/*

9
drivers/mmc/host/dw_mmc.h
View File

@ -244,15 +244,11 @@ struct dw_mci_slot {
unsigned long flags;
#define DW_MMC_CARD_PRESENT 0
#define DW_MMC_CARD_NEED_INIT 1
#define DW_MMC_CARD_NO_LOW_PWR 2
int id;
int sdio_id;
};
struct dw_mci_tuning_data {
const u8 *blk_pattern;
unsigned int blksz;
};
/**
* dw_mci driver data - dw-mshc implementation specific driver data.
* @caps: mmc subsystem specified capabilities of the controller(s).
@ -274,7 +270,6 @@ struct dw_mci_drv_data {
void (*prepare_command)(struct dw_mci *host, u32 *cmdr);
void (*set_ios)(struct dw_mci *host, struct mmc_ios *ios);
int (*parse_dt)(struct dw_mci *host);
int (*execute_tuning)(struct dw_mci_slot *slot, u32 opcode,
struct dw_mci_tuning_data *tuning_data);
int (*execute_tuning)(struct dw_mci_slot *slot);
};
#endif /* _DW_MMC_H_ */

7
drivers/mmc/host/mmci.c
View File

@ -430,7 +430,6 @@ static void mmci_init_sg(struct mmci_host *host, struct mmc_data *data)
static void mmci_dma_setup(struct mmci_host *host)
{
const char *rxname, *txname;
dma_cap_mask_t mask;
struct variant_data *variant = host->variant;
host->dma_rx_channel = dma_request_slave_channel(mmc_dev(host->mmc), "rx");
@ -439,10 +438,6 @@ static void mmci_dma_setup(struct mmci_host *host)
/* initialize pre request cookie */
host->next_data.cookie = 1;
/* Try to acquire a generic DMA engine slave channel */
dma_cap_zero(mask);
dma_cap_set(DMA_SLAVE, mask);
/*
* If only an RX channel is specified, the driver will
* attempt to use it bidirectionally, however if it is
@ -1739,10 +1734,10 @@ static int mmci_probe(struct amba_device *dev,
pm_runtime_set_autosuspend_delay(&dev->dev, 50);
pm_runtime_use_autosuspend(&dev->dev);
pm_runtime_put(&dev->dev);
mmc_add_host(mmc);
pm_runtime_put(&dev->dev);
return 0;
clk_disable:

24
drivers/mmc/host/moxart-mmc.c
View File

@ -17,6 +17,7 @@
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/blkdev.h>
#include <linux/dma-mapping.h>
@ -562,7 +563,6 @@ static int moxart_probe(struct platform_device *pdev)
struct dma_slave_config cfg;
struct clk *clk;
void __iomem *reg_mmc;
dma_cap_mask_t mask;
int irq, ret;
u32 i;
@ -586,9 +586,8 @@ static int moxart_probe(struct platform_device *pdev)
goto out;
}
clk = of_clk_get(node, 0);
clk = devm_clk_get(dev, NULL);
if (IS_ERR(clk)) {
dev_err(dev, "of_clk_get failed\n");
ret = PTR_ERR(clk);
goto out;
}
@ -599,10 +598,9 @@ static int moxart_probe(struct platform_device *pdev)
goto out;
}
mmc_of_parse(mmc);
dma_cap_zero(mask);
dma_cap_set(DMA_SLAVE, mask);
ret = mmc_of_parse(mmc);
if (ret)
goto out;
host = mmc_priv(mmc);
host->mmc = mmc;
@ -611,8 +609,8 @@ static int moxart_probe(struct platform_device *pdev)
host->timeout = msecs_to_jiffies(1000);
host->sysclk = clk_get_rate(clk);
host->fifo_width = readl(host->base + REG_FEATURE) << 2;
host->dma_chan_tx = of_dma_request_slave_channel(node, "tx");
host->dma_chan_rx = of_dma_request_slave_channel(node, "rx");
host->dma_chan_tx = dma_request_slave_channel_reason(dev, "tx");
host->dma_chan_rx = dma_request_slave_channel_reason(dev, "rx");
spin_lock_init(&host->lock);
@ -622,6 +620,11 @@ static int moxart_probe(struct platform_device *pdev)
mmc->ocr_avail = 0xffff00; /* Support 2.0v - 3.6v power. */
if (IS_ERR(host->dma_chan_tx) || IS_ERR(host->dma_chan_rx)) {
if (PTR_ERR(host->dma_chan_tx) == -EPROBE_DEFER ||
PTR_ERR(host->dma_chan_rx) == -EPROBE_DEFER) {
ret = -EPROBE_DEFER;
goto out;
}
dev_dbg(dev, "PIO mode transfer enabled\n");
host->have_dma = false;
} else {
@ -700,9 +703,6 @@ static int moxart_remove(struct platform_device *pdev)
writel(readl(host->base + REG_CLOCK_CONTROL) | CLK_OFF,
host->base + REG_CLOCK_CONTROL);
}
kfree(host);
return 0;
}

10
drivers/mmc/host/mvsdio.c
View File

@ -25,7 +25,6 @@
#include <linux/of_irq.h>
#include <linux/mmc/host.h>
#include <linux/mmc/slot-gpio.h>
#include <linux/pinctrl/consumer.h>
#include <asm/sizes.h>
#include <asm/unaligned.h>
@ -704,7 +703,6 @@ static int mvsd_probe(struct platform_device *pdev)
const struct mbus_dram_target_info *dram;
struct resource *r;
int ret, irq;
struct pinctrl *pinctrl;
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
irq = platform_get_irq(pdev, 0);
@ -721,10 +719,6 @@ static int mvsd_probe(struct platform_device *pdev)
host->mmc = mmc;
host->dev = &pdev->dev;
pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
if (IS_ERR(pinctrl))
dev_warn(&pdev->dev, "no pins associated\n");
/*
* Some non-DT platforms do not pass a clock, and the clock
* frequency is passed through platform_data. On DT platforms,
@ -828,8 +822,6 @@ static int mvsd_probe(struct platform_device *pdev)
out:
if (mmc) {
mmc_gpio_free_cd(mmc);
mmc_gpio_free_ro(mmc);
if (!IS_ERR(host->clk))
clk_disable_unprepare(host->clk);
mmc_free_host(mmc);
@ -844,8 +836,6 @@ static int mvsd_remove(struct platform_device *pdev)
struct mvsd_host *host = mmc_priv(mmc);
mmc_gpio_free_cd(mmc);
mmc_gpio_free_ro(mmc);
mmc_remove_host(mmc);
del_timer_sync(&host->timer);
mvsd_power_down(host);

1
drivers/mmc/host/mxs-mmc.c
View File

@ -677,7 +677,6 @@ static int mxs_mmc_probe(struct platform_device *pdev)
return 0;
out_free_dma:
if (ssp->dmach)
dma_release_channel(ssp->dmach);
out_clk_disable:
clk_disable_unprepare(ssp->clk);

150
drivers/mmc/host/omap_hsmmc.c
View File

@ -36,6 +36,7 @@
#include <linux/mmc/host.h>
#include <linux/mmc/core.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/slot-gpio.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/gpio.h>
@ -251,55 +252,24 @@ static void omap_hsmmc_start_dma_transfer(struct omap_hsmmc_host *host);
static int omap_hsmmc_card_detect(struct device *dev)
{
struct omap_hsmmc_host *host = dev_get_drvdata(dev);
struct omap_hsmmc_platform_data *mmc = host->pdata;
/* NOTE: assumes card detect signal is active-low */
return !gpio_get_value_cansleep(mmc->switch_pin);
return mmc_gpio_get_cd(host->mmc);
}
static int omap_hsmmc_get_wp(struct device *dev)
{
struct omap_hsmmc_host *host = dev_get_drvdata(dev);
struct omap_hsmmc_platform_data *mmc = host->pdata;
/* NOTE: assumes write protect signal is active-high */
return gpio_get_value_cansleep(mmc->gpio_wp);
return mmc_gpio_get_ro(host->mmc);
}
static int omap_hsmmc_get_cover_state(struct device *dev)
{
struct omap_hsmmc_host *host = dev_get_drvdata(dev);
struct omap_hsmmc_platform_data *mmc = host->pdata;
/* NOTE: assumes card detect signal is active-low */
return !gpio_get_value_cansleep(mmc->switch_pin);
return mmc_gpio_get_cd(host->mmc);
}
#ifdef CONFIG_PM
static int omap_hsmmc_suspend_cdirq(struct device *dev)
{
struct omap_hsmmc_host *host = dev_get_drvdata(dev);
disable_irq(host->card_detect_irq);
return 0;
}
static int omap_hsmmc_resume_cdirq(struct device *dev)
{
struct omap_hsmmc_host *host = dev_get_drvdata(dev);
enable_irq(host->card_detect_irq);
return 0;
}
#else
#define omap_hsmmc_suspend_cdirq NULL
#define omap_hsmmc_resume_cdirq NULL
#endif
#ifdef CONFIG_REGULATOR
static int omap_hsmmc_set_power(struct device *dev, int power_on, int vdd)
@ -464,7 +434,10 @@ static inline int omap_hsmmc_have_reg(void)
#endif
static int omap_hsmmc_gpio_init(struct omap_hsmmc_host *host,
static irqreturn_t omap_hsmmc_detect(int irq, void *dev_id);
static int omap_hsmmc_gpio_init(struct mmc_host *mmc,
struct omap_hsmmc_host *host,
struct omap_hsmmc_platform_data *pdata)
{
int ret;
@ -477,46 +450,24 @@ static int omap_hsmmc_gpio_init(struct omap_hsmmc_host *host,
host->card_detect = omap_hsmmc_card_detect;
host->card_detect_irq =
gpio_to_irq(pdata->switch_pin);
ret = gpio_request(pdata->switch_pin, "mmc_cd");
mmc_gpio_set_cd_isr(mmc, omap_hsmmc_detect);
ret = mmc_gpio_request_cd(mmc, pdata->switch_pin, 0);
if (ret)
return ret;
ret = gpio_direction_input(pdata->switch_pin);
if (ret)
goto err_free_sp;
} else {
pdata->switch_pin = -EINVAL;
}
if (gpio_is_valid(pdata->gpio_wp)) {
host->get_ro = omap_hsmmc_get_wp;
ret = gpio_request(pdata->gpio_wp, "mmc_wp");
ret = mmc_gpio_request_ro(mmc, pdata->gpio_wp);
if (ret)
goto err_free_cd;
ret = gpio_direction_input(pdata->gpio_wp);
if (ret)
goto err_free_wp;
return ret;
} else {
pdata->gpio_wp = -EINVAL;
}
return 0;
err_free_wp:
gpio_free(pdata->gpio_wp);
err_free_cd:
if (gpio_is_valid(pdata->switch_pin))
err_free_sp:
gpio_free(pdata->switch_pin);
return ret;
}
static void omap_hsmmc_gpio_free(struct omap_hsmmc_host *host,
struct omap_hsmmc_platform_data *pdata)
{
if (gpio_is_valid(pdata->gpio_wp))
gpio_free(pdata->gpio_wp);
if (gpio_is_valid(pdata->switch_pin))
gpio_free(pdata->switch_pin);
}
/*
@ -1978,13 +1929,6 @@ static struct omap_hsmmc_platform_data *of_get_hsmmc_pdata(struct device *dev)
{
struct omap_hsmmc_platform_data *pdata;
struct device_node *np = dev->of_node;
u32 bus_width, max_freq;
int cd_gpio, wp_gpio;
cd_gpio = of_get_named_gpio(np, "cd-gpios", 0);
wp_gpio = of_get_named_gpio(np, "wp-gpios", 0);
if (cd_gpio == -EPROBE_DEFER || wp_gpio == -EPROBE_DEFER)
return ERR_PTR(-EPROBE_DEFER);
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
@ -1993,34 +1937,20 @@ static struct omap_hsmmc_platform_data *of_get_hsmmc_pdata(struct device *dev)
if (of_find_property(np, "ti,dual-volt", NULL))
pdata->controller_flags |= OMAP_HSMMC_SUPPORTS_DUAL_VOLT;
pdata->switch_pin = cd_gpio;
pdata->gpio_wp = wp_gpio;
pdata->switch_pin = -EINVAL;
pdata->gpio_wp = -EINVAL;
if (of_find_property(np, "ti,non-removable", NULL)) {
pdata->nonremovable = true;
pdata->no_regulator_off_init = true;
}
of_property_read_u32(np, "bus-width", &bus_width);
if (bus_width == 4)
pdata->caps |= MMC_CAP_4_BIT_DATA;
else if (bus_width == 8)
pdata->caps |= MMC_CAP_8_BIT_DATA;
if (of_find_property(np, "ti,needs-special-reset", NULL))
pdata->features |= HSMMC_HAS_UPDATED_RESET;
if (!of_property_read_u32(np, "max-frequency", &max_freq))
pdata->max_freq = max_freq;
if (of_find_property(np, "ti,needs-special-hs-handling", NULL))
pdata->features |= HSMMC_HAS_HSPE_SUPPORT;
if (of_find_property(np, "keep-power-in-suspend", NULL))
pdata->pm_caps |= MMC_PM_KEEP_POWER;
if (of_find_property(np, "enable-sdio-wakeup", NULL))
pdata->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;
return pdata;
}
#else
@ -2078,6 +2008,10 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
goto err;
}
ret = mmc_of_parse(mmc);
if (ret)
goto err1;
host = mmc_priv(mmc);
host->mmc = mmc;
host->pdata = pdata;
@ -2091,7 +2025,7 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
host->next_data.cookie = 1;
host->pbias_enabled = 0;
ret = omap_hsmmc_gpio_init(host, pdata);
ret = omap_hsmmc_gpio_init(mmc, host, pdata);
if (ret)
goto err_gpio;
@ -2106,7 +2040,7 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
if (pdata->max_freq > 0)
mmc->f_max = pdata->max_freq;
else
else if (mmc->f_max == 0)
mmc->f_max = OMAP_MMC_MAX_CLOCK;
spin_lock_init(&host->irq_lock);
@ -2160,7 +2094,7 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
if (mmc_pdata(host)->nonremovable)
mmc->caps |= MMC_CAP_NONREMOVABLE;
mmc->pm_caps = mmc_pdata(host)->pm_caps;
mmc->pm_caps |= mmc_pdata(host)->pm_caps;
omap_hsmmc_conf_bus_power(host);
@ -2222,22 +2156,6 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
mmc->ocr_avail = mmc_pdata(host)->ocr_mask;
/* Request IRQ for card detect */
if (host->card_detect_irq) {
ret = devm_request_threaded_irq(&pdev->dev,
host->card_detect_irq,
NULL, omap_hsmmc_detect,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
mmc_hostname(mmc), host);
if (ret) {
dev_err(mmc_dev(host->mmc),
"Unable to grab MMC CD IRQ\n");
goto err_irq_cd;
}
host->suspend = omap_hsmmc_suspend_cdirq;
host->resume = omap_hsmmc_resume_cdirq;
}
omap_hsmmc_disable_irq(host);
/*
@ -2276,7 +2194,6 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
err_slot_name:
mmc_remove_host(mmc);
err_irq_cd:
if (host->use_reg)
omap_hsmmc_reg_put(host);
err_irq:
@ -2289,7 +2206,6 @@ err_irq:
if (host->dbclk)
clk_disable_unprepare(host->dbclk);
err1:
omap_hsmmc_gpio_free(host, pdata);
err_gpio:
mmc_free_host(mmc);
err:
@ -2315,32 +2231,12 @@ static int omap_hsmmc_remove(struct platform_device *pdev)
if (host->dbclk)
clk_disable_unprepare(host->dbclk);
omap_hsmmc_gpio_free(host, host->pdata);
mmc_free_host(host->mmc);
return 0;
}
#ifdef CONFIG_PM
static int omap_hsmmc_prepare(struct device *dev)
{
struct omap_hsmmc_host *host = dev_get_drvdata(dev);
if (host->suspend)
return host->suspend(dev);
return 0;
}
static void omap_hsmmc_complete(struct device *dev)
{
struct omap_hsmmc_host *host = dev_get_drvdata(dev);
if (host->resume)
host->resume(dev);
}
static int omap_hsmmc_suspend(struct device *dev)
{
struct omap_hsmmc_host *host = dev_get_drvdata(dev);
@ -2398,8 +2294,6 @@ static int omap_hsmmc_resume(struct device *dev)
}
#else
#define omap_hsmmc_prepare NULL
#define omap_hsmmc_complete NULL
#define omap_hsmmc_suspend NULL
#define omap_hsmmc_resume NULL
#endif
@ -2484,8 +2378,6 @@ static int omap_hsmmc_runtime_resume(struct device *dev)
static struct dev_pm_ops omap_hsmmc_dev_pm_ops = {
.suspend = omap_hsmmc_suspend,
.resume = omap_hsmmc_resume,
.prepare = omap_hsmmc_prepare,
.complete = omap_hsmmc_complete,
.runtime_suspend = omap_hsmmc_runtime_suspend,
.runtime_resume = omap_hsmmc_runtime_resume,
};

520
drivers/mmc/host/rtsx_pci_sdmmc.c
View File

@ -28,6 +28,7 @@
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/sd.h>
#include <linux/mmc/sdio.h>
#include <linux/mmc/card.h>
#include <linux/mfd/rtsx_pci.h>
#include <asm/unaligned.h>
@ -53,9 +54,9 @@ struct realtek_pci_sdmmc {
#define SDMMC_POWER_ON 1
#define SDMMC_POWER_OFF 0
unsigned int sg_count;
int sg_count;
s32 cookie;
unsigned int cookie_sg_count;
int cookie_sg_count;
bool using_cookie;
};
@ -71,30 +72,83 @@ static inline void sd_clear_error(struct realtek_pci_sdmmc *host)
}
#ifdef DEBUG
static void dump_reg_range(struct realtek_pci_sdmmc *host, u16 start, u16 end)
{
u16 len = end - start + 1;
int i;
u8 data[8];
for (i = 0; i < len; i += 8) {
int j;
int n = min(8, len - i);
memset(&data, 0, sizeof(data));
for (j = 0; j < n; j++)
rtsx_pci_read_register(host->pcr, start + i + j,
data + j);
dev_dbg(sdmmc_dev(host), "0x%04X(%d): %8ph\n",
start + i, n, data);
}
}
static void sd_print_debug_regs(struct realtek_pci_sdmmc *host)
{
struct rtsx_pcr *pcr = host->pcr;
u16 i;
u8 *ptr;
/* Print SD host internal registers */
rtsx_pci_init_cmd(pcr);
for (i = 0xFDA0; i <= 0xFDAE; i++)
rtsx_pci_add_cmd(pcr, READ_REG_CMD, i, 0, 0);
for (i = 0xFD52; i <= 0xFD69; i++)
rtsx_pci_add_cmd(pcr, READ_REG_CMD, i, 0, 0);
rtsx_pci_send_cmd(pcr, 100);
ptr = rtsx_pci_get_cmd_data(pcr);
for (i = 0xFDA0; i <= 0xFDAE; i++)
dev_dbg(sdmmc_dev(host), "0x%04X: 0x%02x\n", i, *(ptr++));
for (i = 0xFD52; i <= 0xFD69; i++)
dev_dbg(sdmmc_dev(host), "0x%04X: 0x%02x\n", i, *(ptr++));
dump_reg_range(host, 0xFDA0, 0xFDB3);
dump_reg_range(host, 0xFD52, 0xFD69);
}
#else
#define sd_print_debug_regs(host)
#endif /* DEBUG */
static inline int sd_get_cd_int(struct realtek_pci_sdmmc *host)
{
return rtsx_pci_readl(host->pcr, RTSX_BIPR) & SD_EXIST;
}
static void sd_cmd_set_sd_cmd(struct rtsx_pcr *pcr, struct mmc_command *cmd)
{
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CMD0, 0xFF,
SD_CMD_START | cmd->opcode);
rtsx_pci_write_be32(pcr, SD_CMD1, cmd->arg);
}
static void sd_cmd_set_data_len(struct rtsx_pcr *pcr, u16 blocks, u16 blksz)
{
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BLOCK_CNT_L, 0xFF, blocks);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BLOCK_CNT_H, 0xFF, blocks >> 8);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BYTE_CNT_L, 0xFF, blksz);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BYTE_CNT_H, 0xFF, blksz >> 8);
}
static int sd_response_type(struct mmc_command *cmd)
{
switch (mmc_resp_type(cmd)) {
case MMC_RSP_NONE:
return SD_RSP_TYPE_R0;
case MMC_RSP_R1:
return SD_RSP_TYPE_R1;
case MMC_RSP_R1 & ~MMC_RSP_CRC:
return SD_RSP_TYPE_R1 | SD_NO_CHECK_CRC7;
case MMC_RSP_R1B:
return SD_RSP_TYPE_R1b;
case MMC_RSP_R2:
return SD_RSP_TYPE_R2;
case MMC_RSP_R3:
return SD_RSP_TYPE_R3;
default:
return -EINVAL;
}
}
static int sd_status_index(int resp_type)
{
if (resp_type == SD_RSP_TYPE_R0)
return 0;
else if (resp_type == SD_RSP_TYPE_R2)
return 16;
return 5;
}
/*
* sd_pre_dma_transfer - do dma_map_sg() or using cookie
*
@ -166,123 +220,6 @@ static void sdmmc_post_req(struct mmc_host *mmc, struct mmc_request *mrq,
data->host_cookie = 0;
}
static int sd_read_data(struct realtek_pci_sdmmc *host, u8 *cmd, u16 byte_cnt,
u8 *buf, int buf_len, int timeout)
{
struct rtsx_pcr *pcr = host->pcr;
int err, i;
u8 trans_mode;
dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD%d\n", __func__, cmd[0] - 0x40);
if (!buf)
buf_len = 0;
if ((cmd[0] & 0x3F) == MMC_SEND_TUNING_BLOCK)
trans_mode = SD_TM_AUTO_TUNING;
else
trans_mode = SD_TM_NORMAL_READ;
rtsx_pci_init_cmd(pcr);
for (i = 0; i < 5; i++)
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CMD0 + i, 0xFF, cmd[i]);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BYTE_CNT_L, 0xFF, (u8)byte_cnt);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BYTE_CNT_H,
0xFF, (u8)(byte_cnt >> 8));
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BLOCK_CNT_L, 0xFF, 1);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BLOCK_CNT_H, 0xFF, 0);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CFG2, 0xFF,
SD_CALCULATE_CRC7 | SD_CHECK_CRC16 |
SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_6);
if (trans_mode != SD_TM_AUTO_TUNING)
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
CARD_DATA_SOURCE, 0x01, PINGPONG_BUFFER);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_TRANSFER,
0xFF, trans_mode | SD_TRANSFER_START);
rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, SD_TRANSFER,
SD_TRANSFER_END, SD_TRANSFER_END);
err = rtsx_pci_send_cmd(pcr, timeout);
if (err < 0) {
sd_print_debug_regs(host);
dev_dbg(sdmmc_dev(host),
"rtsx_pci_send_cmd fail (err = %d)\n", err);
return err;
}
if (buf && buf_len) {
err = rtsx_pci_read_ppbuf(pcr, buf, buf_len);
if (err < 0) {
dev_dbg(sdmmc_dev(host),
"rtsx_pci_read_ppbuf fail (err = %d)\n", err);
return err;
}
}
return 0;
}
static int sd_write_data(struct realtek_pci_sdmmc *host, u8 *cmd, u16 byte_cnt,
u8 *buf, int buf_len, int timeout)
{
struct rtsx_pcr *pcr = host->pcr;
int err, i;
u8 trans_mode;
if (!buf)
buf_len = 0;
if (buf && buf_len) {
err = rtsx_pci_write_ppbuf(pcr, buf, buf_len);
if (err < 0) {
dev_dbg(sdmmc_dev(host),
"rtsx_pci_write_ppbuf fail (err = %d)\n", err);
return err;
}
}
trans_mode = cmd ? SD_TM_AUTO_WRITE_2 : SD_TM_AUTO_WRITE_3;
rtsx_pci_init_cmd(pcr);
if (cmd) {
dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD %d\n", __func__,
cmd[0] - 0x40);
for (i = 0; i < 5; i++)
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
SD_CMD0 + i, 0xFF, cmd[i]);
}
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BYTE_CNT_L, 0xFF, (u8)byte_cnt);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BYTE_CNT_H,
0xFF, (u8)(byte_cnt >> 8));
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BLOCK_CNT_L, 0xFF, 1);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BLOCK_CNT_H, 0xFF, 0);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CFG2, 0xFF,
SD_CALCULATE_CRC7 | SD_CHECK_CRC16 |
SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_6);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_TRANSFER, 0xFF,
trans_mode | SD_TRANSFER_START);
rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, SD_TRANSFER,
SD_TRANSFER_END, SD_TRANSFER_END);
err = rtsx_pci_send_cmd(pcr, timeout);
if (err < 0) {
sd_print_debug_regs(host);
dev_dbg(sdmmc_dev(host),
"rtsx_pci_send_cmd fail (err = %d)\n", err);
return err;
}
return 0;
}
static void sd_send_cmd_get_rsp(struct realtek_pci_sdmmc *host,
struct mmc_command *cmd)
{
@ -293,47 +230,18 @@ static void sd_send_cmd_get_rsp(struct realtek_pci_sdmmc *host,
int timeout = 100;
int i;
u8 *ptr;
int stat_idx = 0;
u8 rsp_type;
int rsp_len = 5;
int rsp_type;
int stat_idx;
bool clock_toggled = false;
dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD %d, arg = 0x%08x\n",
__func__, cmd_idx, arg);
/* Response type:
* R0
* R1, R5, R6, R7
* R1b
* R2
* R3, R4
*/
switch (mmc_resp_type(cmd)) {
case MMC_RSP_NONE:
rsp_type = SD_RSP_TYPE_R0;
rsp_len = 0;
break;
case MMC_RSP_R1:
rsp_type = SD_RSP_TYPE_R1;
break;
case MMC_RSP_R1 & ~MMC_RSP_CRC:
rsp_type = SD_RSP_TYPE_R1 | SD_NO_CHECK_CRC7;
break;
case MMC_RSP_R1B:
rsp_type = SD_RSP_TYPE_R1b;
break;
case MMC_RSP_R2:
rsp_type = SD_RSP_TYPE_R2;
rsp_len = 16;
break;
case MMC_RSP_R3:
rsp_type = SD_RSP_TYPE_R3;
break;
default:
dev_dbg(sdmmc_dev(host), "cmd->flag is not valid\n");
err = -EINVAL;
rsp_type = sd_response_type(cmd);
if (rsp_type < 0)
goto out;
}
stat_idx = sd_status_index(rsp_type);
if (rsp_type == SD_RSP_TYPE_R1b)
timeout = 3000;
@ -348,13 +256,7 @@ static void sd_send_cmd_get_rsp(struct realtek_pci_sdmmc *host,
}
rtsx_pci_init_cmd(pcr);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CMD0, 0xFF, 0x40 | cmd_idx);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CMD1, 0xFF, (u8)(arg >> 24));
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CMD2, 0xFF, (u8)(arg >> 16));
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CMD3, 0xFF, (u8)(arg >> 8));
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CMD4, 0xFF, (u8)arg);
sd_cmd_set_sd_cmd(pcr, cmd);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CFG2, 0xFF, rsp_type);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_DATA_SOURCE,
0x01, PINGPONG_BUFFER);
@ -368,12 +270,10 @@ static void sd_send_cmd_get_rsp(struct realtek_pci_sdmmc *host,
/* Read data from ping-pong buffer */
for (i = PPBUF_BASE2; i < PPBUF_BASE2 + 16; i++)
rtsx_pci_add_cmd(pcr, READ_REG_CMD, (u16)i, 0, 0);
stat_idx = 16;
} else if (rsp_type != SD_RSP_TYPE_R0) {
/* Read data from SD_CMDx registers */
for (i = SD_CMD0; i <= SD_CMD4; i++)
rtsx_pci_add_cmd(pcr, READ_REG_CMD, (u16)i, 0, 0);
stat_idx = 5;
}
rtsx_pci_add_cmd(pcr, READ_REG_CMD, SD_STAT1, 0, 0);
@ -438,40 +338,133 @@ out:
SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP, 0);
}
static int sd_rw_multi(struct realtek_pci_sdmmc *host, struct mmc_request *mrq)
static int sd_read_data(struct realtek_pci_sdmmc *host, struct mmc_command *cmd,
u16 byte_cnt, u8 *buf, int buf_len, int timeout)
{
struct rtsx_pcr *pcr = host->pcr;
int err;
u8 trans_mode;
dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD %d, arg = 0x%08x\n",
__func__, cmd->opcode, cmd->arg);
if (!buf)
buf_len = 0;
if (cmd->opcode == MMC_SEND_TUNING_BLOCK)
trans_mode = SD_TM_AUTO_TUNING;
else
trans_mode = SD_TM_NORMAL_READ;
rtsx_pci_init_cmd(pcr);
sd_cmd_set_sd_cmd(pcr, cmd);
sd_cmd_set_data_len(pcr, 1, byte_cnt);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CFG2, 0xFF,
SD_CALCULATE_CRC7 | SD_CHECK_CRC16 |
SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_6);
if (trans_mode != SD_TM_AUTO_TUNING)
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
CARD_DATA_SOURCE, 0x01, PINGPONG_BUFFER);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_TRANSFER,
0xFF, trans_mode | SD_TRANSFER_START);
rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, SD_TRANSFER,
SD_TRANSFER_END, SD_TRANSFER_END);
err = rtsx_pci_send_cmd(pcr, timeout);
if (err < 0) {
sd_print_debug_regs(host);
dev_dbg(sdmmc_dev(host),
"rtsx_pci_send_cmd fail (err = %d)\n", err);
return err;
}
if (buf && buf_len) {
err = rtsx_pci_read_ppbuf(pcr, buf, buf_len);
if (err < 0) {
dev_dbg(sdmmc_dev(host),
"rtsx_pci_read_ppbuf fail (err = %d)\n", err);
return err;
}
}
return 0;
}
static int sd_write_data(struct realtek_pci_sdmmc *host,
struct mmc_command *cmd, u16 byte_cnt, u8 *buf, int buf_len,
int timeout)
{
struct rtsx_pcr *pcr = host->pcr;
int err;
dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD %d, arg = 0x%08x\n",
__func__, cmd->opcode, cmd->arg);
if (!buf)
buf_len = 0;
sd_send_cmd_get_rsp(host, cmd);
if (cmd->error)
return cmd->error;
if (buf && buf_len) {
err = rtsx_pci_write_ppbuf(pcr, buf, buf_len);
if (err < 0) {
dev_dbg(sdmmc_dev(host),
"rtsx_pci_write_ppbuf fail (err = %d)\n", err);
return err;
}
}
rtsx_pci_init_cmd(pcr);
sd_cmd_set_data_len(pcr, 1, byte_cnt);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CFG2, 0xFF,
SD_CALCULATE_CRC7 | SD_CHECK_CRC16 |
SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_0);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_TRANSFER, 0xFF,
SD_TRANSFER_START | SD_TM_AUTO_WRITE_3);
rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, SD_TRANSFER,
SD_TRANSFER_END, SD_TRANSFER_END);
err = rtsx_pci_send_cmd(pcr, timeout);
if (err < 0) {
sd_print_debug_regs(host);
dev_dbg(sdmmc_dev(host),
"rtsx_pci_send_cmd fail (err = %d)\n", err);
return err;
}
return 0;
}
static int sd_read_long_data(struct realtek_pci_sdmmc *host,
struct mmc_request *mrq)
{
struct rtsx_pcr *pcr = host->pcr;
struct mmc_host *mmc = host->mmc;
struct mmc_card *card = mmc->card;
struct mmc_command *cmd = mrq->cmd;
struct mmc_data *data = mrq->data;
int uhs = mmc_card_uhs(card);
int read = (data->flags & MMC_DATA_READ) ? 1 : 0;
u8 cfg2, trans_mode;
u8 cfg2 = 0;
int err;
int resp_type;
size_t data_len = data->blksz * data->blocks;
if (read) {
cfg2 = SD_CALCULATE_CRC7 | SD_CHECK_CRC16 |
SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_0;
trans_mode = SD_TM_AUTO_READ_3;
} else {
cfg2 = SD_NO_CALCULATE_CRC7 | SD_CHECK_CRC16 |
SD_NO_WAIT_BUSY_END | SD_NO_CHECK_CRC7 | SD_RSP_LEN_0;
trans_mode = SD_TM_AUTO_WRITE_3;
}
dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD %d, arg = 0x%08x\n",
__func__, cmd->opcode, cmd->arg);
resp_type = sd_response_type(cmd);
if (resp_type < 0)
return resp_type;
if (!uhs)
cfg2 |= SD_NO_CHECK_WAIT_CRC_TO;
rtsx_pci_init_cmd(pcr);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BYTE_CNT_L, 0xFF, 0x00);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BYTE_CNT_H, 0xFF, 0x02);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BLOCK_CNT_L,
0xFF, (u8)data->blocks);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_BLOCK_CNT_H,
0xFF, (u8)(data->blocks >> 8));
sd_cmd_set_sd_cmd(pcr, cmd);
sd_cmd_set_data_len(pcr, data->blocks, data->blksz);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, IRQSTAT0,
DMA_DONE_INT, DMA_DONE_INT);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC3,
@ -481,28 +474,77 @@ static int sd_rw_multi(struct realtek_pci_sdmmc *host, struct mmc_request *mrq)
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC1,
0xFF, (u8)(data_len >> 8));
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC0, 0xFF, (u8)data_len);
if (read) {
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMACTL,
0x03 | DMA_PACK_SIZE_MASK,
DMA_DIR_FROM_CARD | DMA_EN | DMA_512);
} else {
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_DATA_SOURCE,
0x01, RING_BUFFER);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CFG2, 0xFF, cfg2 | resp_type);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_TRANSFER, 0xFF,
SD_TRANSFER_START | SD_TM_AUTO_READ_2);
rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, SD_TRANSFER,
SD_TRANSFER_END, SD_TRANSFER_END);
rtsx_pci_send_cmd_no_wait(pcr);
err = rtsx_pci_dma_transfer(pcr, data->sg, host->sg_count, 1, 10000);
if (err < 0) {
sd_print_debug_regs(host);
sd_clear_error(host);
return err;
}
return 0;
}
static int sd_write_long_data(struct realtek_pci_sdmmc *host,
struct mmc_request *mrq)
{
struct rtsx_pcr *pcr = host->pcr;
struct mmc_host *mmc = host->mmc;
struct mmc_card *card = mmc->card;
struct mmc_command *cmd = mrq->cmd;
struct mmc_data *data = mrq->data;
int uhs = mmc_card_uhs(card);
u8 cfg2;
int err;
size_t data_len = data->blksz * data->blocks;
sd_send_cmd_get_rsp(host, cmd);
if (cmd->error)
return cmd->error;
dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD %d, arg = 0x%08x\n",
__func__, cmd->opcode, cmd->arg);
cfg2 = SD_NO_CALCULATE_CRC7 | SD_CHECK_CRC16 |
SD_NO_WAIT_BUSY_END | SD_NO_CHECK_CRC7 | SD_RSP_LEN_0;
if (!uhs)
cfg2 |= SD_NO_CHECK_WAIT_CRC_TO;
rtsx_pci_init_cmd(pcr);
sd_cmd_set_data_len(pcr, data->blocks, data->blksz);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, IRQSTAT0,
DMA_DONE_INT, DMA_DONE_INT);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC3,
0xFF, (u8)(data_len >> 24));
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC2,
0xFF, (u8)(data_len >> 16));
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC1,
0xFF, (u8)(data_len >> 8));
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC0, 0xFF, (u8)data_len);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMACTL,
0x03 | DMA_PACK_SIZE_MASK,
DMA_DIR_TO_CARD | DMA_EN | DMA_512);
}
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_DATA_SOURCE,
0x01, RING_BUFFER);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CFG2, 0xFF, cfg2);
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_TRANSFER, 0xFF,
trans_mode | SD_TRANSFER_START);
SD_TRANSFER_START | SD_TM_AUTO_WRITE_3);
rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, SD_TRANSFER,
SD_TRANSFER_END, SD_TRANSFER_END);
rtsx_pci_send_cmd_no_wait(pcr);
err = rtsx_pci_dma_transfer(pcr, data->sg, host->sg_count, read, 10000);
err = rtsx_pci_dma_transfer(pcr, data->sg, host->sg_count, 0, 10000);
if (err < 0) {
sd_clear_error(host);
return err;
@ -511,6 +553,23 @@ static int sd_rw_multi(struct realtek_pci_sdmmc *host, struct mmc_request *mrq)
return 0;
}
static int sd_rw_multi(struct realtek_pci_sdmmc *host, struct mmc_request *mrq)
{
struct mmc_data *data = mrq->data;
if (host->sg_count < 0) {
data->error = host->sg_count;
dev_dbg(sdmmc_dev(host), "%s: sg_count = %d is invalid\n",
__func__, host->sg_count);
return data->error;
}
if (data->flags & MMC_DATA_READ)
return sd_read_long_data(host, mrq);
return sd_write_long_data(host, mrq);
}
static inline void sd_enable_initial_mode(struct realtek_pci_sdmmc *host)
{
rtsx_pci_write_register(host->pcr, SD_CFG1,
@ -528,10 +587,7 @@ static void sd_normal_rw(struct realtek_pci_sdmmc *host,
{
struct mmc_command *cmd = mrq->cmd;
struct mmc_data *data = mrq->data;
u8 _cmd[5], *buf;
_cmd[0] = 0x40 | (u8)cmd->opcode;
put_unaligned_be32(cmd->arg, (u32 *)(&_cmd[1]));
u8 *buf;
buf = kzalloc(data->blksz, GFP_NOIO);
if (!buf) {
@ -543,7 +599,7 @@ static void sd_normal_rw(struct realtek_pci_sdmmc *host,
if (host->initial_mode)
sd_disable_initial_mode(host);
cmd->error = sd_read_data(host, _cmd, (u16)data->blksz, buf,
cmd->error = sd_read_data(host, cmd, (u16)data->blksz, buf,
data->blksz, 200);
if (host->initial_mode)
@ -553,7 +609,7 @@ static void sd_normal_rw(struct realtek_pci_sdmmc *host,
} else {
sg_copy_to_buffer(data->sg, data->sg_len, buf, data->blksz);
cmd->error = sd_write_data(host, _cmd, (u16)data->blksz, buf,
cmd->error = sd_write_data(host, cmd, (u16)data->blksz, buf,
data->blksz, 200);
}
@ -653,14 +709,14 @@ static int sd_tuning_rx_cmd(struct realtek_pci_sdmmc *host,
u8 opcode, u8 sample_point)
{
int err;
u8 cmd[5] = {0};
struct mmc_command cmd = {0};
err = sd_change_phase(host, sample_point, true);
if (err < 0)
return err;
cmd[0] = 0x40 | opcode;
err = sd_read_data(host, cmd, 0x40, NULL, 0, 100);
cmd.opcode = opcode;
err = sd_read_data(host, &cmd, 0x40, NULL, 0, 100);
if (err < 0) {
/* Wait till SD DATA IDLE */
sd_wait_data_idle(host);
@ -727,6 +783,12 @@ static int sd_tuning_rx(struct realtek_pci_sdmmc *host, u8 opcode)
return 0;
}
static inline int sdio_extblock_cmd(struct mmc_command *cmd,
struct mmc_data *data)
{
return (cmd->opcode == SD_IO_RW_EXTENDED) && (data->blksz == 512);
}
static inline int sd_rw_cmd(struct mmc_command *cmd)
{
return mmc_op_multi(cmd->opcode) ||
@ -748,7 +810,7 @@ static void sd_request(struct work_struct *work)
unsigned int data_size = 0;
int err;
if (host->eject) {
if (host->eject || !sd_get_cd_int(host)) {
cmd->error = -ENOMEDIUM;
goto finish;
}
@ -776,17 +838,15 @@ static void sd_request(struct work_struct *work)
if (mrq->data)
data_size = data->blocks * data->blksz;
if (!data_size || sd_rw_cmd(cmd)) {
if (!data_size) {
sd_send_cmd_get_rsp(host, cmd);
if (!cmd->error && data_size) {
sd_rw_multi(host, mrq);
} else if (sd_rw_cmd(cmd) || sdio_extblock_cmd(cmd, data)) {
cmd->error = sd_rw_multi(host, mrq);
if (!host->using_cookie)
sdmmc_post_req(host->mmc, host->mrq, 0);
if (mmc_op_multi(cmd->opcode) && mrq->stop)
sd_send_cmd_get_rsp(host, mrq->stop);
}
} else {
sd_normal_rw(host, mrq);
}
@ -801,8 +861,10 @@ static void sd_request(struct work_struct *work)
mutex_unlock(&pcr->pcr_mutex);
finish:
if (cmd->error)
dev_dbg(sdmmc_dev(host), "cmd->error = %d\n", cmd->error);
if (cmd->error) {
dev_dbg(sdmmc_dev(host), "CMD %d 0x%08x error(%d)\n",
cmd->opcode, cmd->arg, cmd->error);
}
mutex_lock(&host->host_mutex);
host->mrq = NULL;
@ -820,7 +882,7 @@ static void sdmmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
host->mrq = mrq;
mutex_unlock(&host->host_mutex);
if (sd_rw_cmd(mrq->cmd))
if (sd_rw_cmd(mrq->cmd) || sdio_extblock_cmd(mrq->cmd, data))
host->using_cookie = sd_pre_dma_transfer(host, data, false);
queue_work(host->workq, &host->work);
@ -1066,7 +1128,7 @@ static int sdmmc_get_cd(struct mmc_host *mmc)
u32 val;
if (host->eject)
return -ENOMEDIUM;
return cd;
mutex_lock(&pcr->pcr_mutex);
@ -1317,6 +1379,7 @@ static void rtsx_pci_sdmmc_card_event(struct platform_device *pdev)
{
struct realtek_pci_sdmmc *host = platform_get_drvdata(pdev);
host->cookie = -1;
mmc_detect_change(host->mmc, 0);
}
@ -1349,6 +1412,7 @@ static int rtsx_pci_sdmmc_drv_probe(struct platform_device *pdev)
host->pcr = pcr;
host->mmc = mmc;
host->pdev = pdev;
host->cookie = -1;
host->power_state = SDMMC_POWER_OFF;
INIT_WORK(&host->work, sd_request);
platform_set_drvdata(pdev, host);

13
drivers/mmc/host/sdhci-acpi.c
View File

@ -158,7 +158,7 @@ static int sdhci_acpi_emmc_probe_slot(struct platform_device *pdev,
host = c->host;
/* Platform specific code during emmc proble slot goes here */
/* Platform specific code during emmc probe slot goes here */
if (hid && uid && !strcmp(hid, "80860F14") && !strcmp(uid, "1") &&
sdhci_readl(host, SDHCI_CAPABILITIES) == 0x446cc8b2 &&
@ -179,7 +179,7 @@ static int sdhci_acpi_sdio_probe_slot(struct platform_device *pdev,
host = c->host;
/* Platform specific code during emmc proble slot goes here */
/* Platform specific code during sdio probe slot goes here */
return 0;
}
@ -195,7 +195,7 @@ static int sdhci_acpi_sd_probe_slot(struct platform_device *pdev,
host = c->host;
/* Platform specific code during emmc proble slot goes here */
/* Platform specific code during sd probe slot goes here */
return 0;
}
@ -448,18 +448,13 @@ static int sdhci_acpi_runtime_resume(struct device *dev)
return sdhci_runtime_resume_host(c->host);
}
static int sdhci_acpi_runtime_idle(struct device *dev)
{
return 0;
}
#endif
static const struct dev_pm_ops sdhci_acpi_pm_ops = {
.suspend = sdhci_acpi_suspend,
.resume = sdhci_acpi_resume,
SET_RUNTIME_PM_OPS(sdhci_acpi_runtime_suspend,
sdhci_acpi_runtime_resume, sdhci_acpi_runtime_idle)
sdhci_acpi_runtime_resume, NULL)
};
static struct platform_driver sdhci_acpi_driver = {

4
drivers/mmc/host/sdhci-bcm-kona.c
View File

@ -254,7 +254,9 @@ static int sdhci_bcm_kona_probe(struct platform_device *pdev)
kona_dev = sdhci_pltfm_priv(pltfm_priv);
mutex_init(&kona_dev->write_lock);
mmc_of_parse(host->mmc);
ret = mmc_of_parse(host->mmc);
if (ret)
goto err_pltfm_free;
if (!host->mmc->f_max) {
dev_err(&pdev->dev, "Missing max-freq for SDHCI cfg\n");

11
drivers/mmc/host/sdhci-esdhc-imx.c
View File

@ -1080,10 +1080,10 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
goto disable_clk;
pm_runtime_set_active(&pdev->dev);
pm_runtime_enable(&pdev->dev);
pm_runtime_set_autosuspend_delay(&pdev->dev, 50);
pm_runtime_use_autosuspend(&pdev->dev);
pm_suspend_ignore_children(&pdev->dev, 1);
pm_runtime_enable(&pdev->dev);
return 0;
@ -1103,16 +1103,15 @@ static int sdhci_esdhc_imx_remove(struct platform_device *pdev)
struct pltfm_imx_data *imx_data = pltfm_host->priv;
int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff);
pm_runtime_get_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
pm_runtime_put_noidle(&pdev->dev);
sdhci_remove_host(host, dead);
pm_runtime_dont_use_autosuspend(&pdev->dev);
pm_runtime_disable(&pdev->dev);
if (!IS_ENABLED(CONFIG_PM)) {
clk_disable_unprepare(imx_data->clk_per);
clk_disable_unprepare(imx_data->clk_ipg);
clk_disable_unprepare(imx_data->clk_ahb);
}
sdhci_pltfm_free(pdev);

20
drivers/mmc/host/sdhci-of-esdhc.c
View File

@ -276,6 +276,14 @@ static void esdhc_pltfm_set_bus_width(struct sdhci_host *host, int width)
ESDHC_CTRL_BUSWIDTH_MASK, ctrl);
}
static void esdhc_reset(struct sdhci_host *host, u8 mask)
{
sdhci_reset(host, mask);
sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);
sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);
}
static const struct sdhci_ops sdhci_esdhc_ops = {
.read_l = esdhc_readl,
.read_w = esdhc_readw,
@ -290,7 +298,7 @@ static const struct sdhci_ops sdhci_esdhc_ops = {
.platform_init = esdhc_of_platform_init,
.adma_workaround = esdhci_of_adma_workaround,
.set_bus_width = esdhc_pltfm_set_bus_width,
.reset = sdhci_reset,
.reset = esdhc_reset,
.set_uhs_signaling = sdhci_set_uhs_signaling,
};
@ -362,13 +370,19 @@ static int sdhci_esdhc_probe(struct platform_device *pdev)
}
/* call to generic mmc_of_parse to support additional capabilities */
mmc_of_parse(host->mmc);
ret = mmc_of_parse(host->mmc);
if (ret)
goto err;
mmc_of_parse_voltage(np, &host->ocr_mask);
ret = sdhci_add_host(host);
if (ret)
sdhci_pltfm_free(pdev);
goto err;
return 0;
err:
sdhci_pltfm_free(pdev);
return ret;
}

7
drivers/mmc/host/sdhci-pci.c
View File

@ -1367,11 +1367,6 @@ static int sdhci_pci_runtime_resume(struct device *dev)
return 0;
}
static int sdhci_pci_runtime_idle(struct device *dev)
{
return 0;
}
#else /* CONFIG_PM */
#define sdhci_pci_suspend NULL
@ -1383,7 +1378,7 @@ static const struct dev_pm_ops sdhci_pci_pm_ops = {
.suspend = sdhci_pci_suspend,
.resume = sdhci_pci_resume,
SET_RUNTIME_PM_OPS(sdhci_pci_runtime_suspend,
sdhci_pci_runtime_resume, sdhci_pci_runtime_idle)
sdhci_pci_runtime_resume, NULL)
};
/*****************************************************************************\

115
drivers/mmc/host/sdhci-pxav3.c
View File

@ -62,6 +62,7 @@ struct sdhci_pxa {
struct clk *clk_core;
struct clk *clk_io;
u8 power_mode;
void __iomem *sdio3_conf_reg;
};
/*
@ -72,6 +73,14 @@ struct sdhci_pxa {
#define SDHCI_WINDOW_BASE(i) (0x84 + ((i) << 3))
#define SDHCI_MAX_WIN_NUM 8
/*
* Fields below belong to SDIO3 Configuration Register (third register
* region for the Armada 38x flavor)
*/
#define SDIO3_CONF_CLK_INV BIT(0)
#define SDIO3_CONF_SD_FB_CLK BIT(2)
static int mv_conf_mbus_windows(struct platform_device *pdev,
const struct mbus_dram_target_info *dram)
{
@ -118,6 +127,51 @@ static int mv_conf_mbus_windows(struct platform_device *pdev,
return 0;
}
static int armada_38x_quirks(struct platform_device *pdev,
struct sdhci_host *host)
{
struct device_node *np = pdev->dev.of_node;
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct sdhci_pxa *pxa = pltfm_host->priv;
struct resource *res;
host->quirks |= SDHCI_QUIRK_MISSING_CAPS;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
"conf-sdio3");
if (res) {
pxa->sdio3_conf_reg = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(pxa->sdio3_conf_reg))
return PTR_ERR(pxa->sdio3_conf_reg);
} else {
/*
* According to erratum 'FE-2946959' both SDR50 and DDR50
* modes require specific clock adjustments in SDIO3
* Configuration register, if the adjustment is not done,
* remove them from the capabilities.
*/
host->caps1 = sdhci_readl(host, SDHCI_CAPABILITIES_1);
host->caps1 &= ~(SDHCI_SUPPORT_SDR50 | SDHCI_SUPPORT_DDR50);
dev_warn(&pdev->dev, "conf-sdio3 register not found: disabling SDR50 and DDR50 modes.\nConsider updating your dtb\n");
}
/*
* According to erratum 'ERR-7878951' Armada 38x SDHCI
* controller has different capabilities than the ones shown
* in its registers
*/
host->caps = sdhci_readl(host, SDHCI_CAPABILITIES);
if (of_property_read_bool(np, "no-1-8-v")) {
host->caps &= ~SDHCI_CAN_VDD_180;
host->mmc->caps &= ~MMC_CAP_1_8V_DDR;
} else {
host->caps &= ~SDHCI_CAN_VDD_330;
}
host->caps1 &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_USE_SDR50_TUNING);
return 0;
}
static void pxav3_reset(struct sdhci_host *host, u8 mask)
{
struct platform_device *pdev = to_platform_device(mmc_dev(host->mmc));
@ -194,6 +248,8 @@ static void pxav3_gen_init_74_clocks(struct sdhci_host *host, u8 power_mode)
static void pxav3_set_uhs_signaling(struct sdhci_host *host, unsigned int uhs)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct sdhci_pxa *pxa = pltfm_host->priv;
u16 ctrl_2;
/*
@ -223,6 +279,24 @@ static void pxav3_set_uhs_signaling(struct sdhci_host *host, unsigned int uhs)
break;
}
/*
* Update SDIO3 Configuration register according to erratum
* FE-2946959
*/
if (pxa->sdio3_conf_reg) {
u8 reg_val = readb(pxa->sdio3_conf_reg);
if (uhs == MMC_TIMING_UHS_SDR50 ||
uhs == MMC_TIMING_UHS_DDR50) {
reg_val &= ~SDIO3_CONF_CLK_INV;
reg_val |= SDIO3_CONF_SD_FB_CLK;
} else {
reg_val |= SDIO3_CONF_CLK_INV;
reg_val &= ~SDIO3_CONF_SD_FB_CLK;
}
writeb(reg_val, pxa->sdio3_conf_reg);
}
sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
dev_dbg(mmc_dev(host->mmc),
"%s uhs = %d, ctrl_2 = %04X\n",
@ -268,8 +342,8 @@ static struct sdhci_pxa_platdata *pxav3_get_mmc_pdata(struct device *dev)
if (!pdata)
return NULL;
of_property_read_u32(np, "mrvl,clk-delay-cycles", &clk_delay_cycles);
if (clk_delay_cycles > 0)
if (!of_property_read_u32(np, "mrvl,clk-delay-cycles",
&clk_delay_cycles))
pdata->clk_delay_cycles = clk_delay_cycles;
return pdata;
@ -318,15 +392,18 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
if (!IS_ERR(pxa->clk_core))
clk_prepare_enable(pxa->clk_core);
/* enable 1/8V DDR capable */
host->mmc->caps |= MMC_CAP_1_8V_DDR;
if (of_device_is_compatible(np, "marvell,armada-380-sdhci")) {
ret = armada_38x_quirks(pdev, host);
if (ret < 0)
goto err_clk_get;
ret = mv_conf_mbus_windows(pdev, mv_mbus_dram_info());
if (ret < 0)
goto err_mbus_win;
}
/* enable 1/8V DDR capable */
host->mmc->caps |= MMC_CAP_1_8V_DDR;
match = of_match_device(of_match_ptr(sdhci_pxav3_of_match), &pdev->dev);
if (match) {
ret = mmc_of_parse(host->mmc);
@ -365,10 +442,11 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
}
}
pm_runtime_enable(&pdev->dev);
pm_runtime_get_sync(&pdev->dev);
pm_runtime_get_noresume(&pdev->dev);
pm_runtime_set_active(&pdev->dev);
pm_runtime_set_autosuspend_delay(&pdev->dev, PXAV3_RPM_DELAY_MS);
pm_runtime_use_autosuspend(&pdev->dev);
pm_runtime_enable(&pdev->dev);
pm_suspend_ignore_children(&pdev->dev, 1);
ret = sdhci_add_host(host);
@ -391,13 +469,12 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
return 0;
err_add_host:
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
pm_runtime_put_noidle(&pdev->dev);
err_of_parse:
err_cd_req:
err_mbus_win:
clk_disable_unprepare(pxa->clk_io);
if (!IS_ERR(pxa->clk_core))
clk_disable_unprepare(pxa->clk_core);
err_clk_get:
sdhci_pltfm_free(pdev);
@ -411,11 +488,12 @@ static int sdhci_pxav3_remove(struct platform_device *pdev)
struct sdhci_pxa *pxa = pltfm_host->priv;
pm_runtime_get_sync(&pdev->dev);
sdhci_remove_host(host, 1);
pm_runtime_disable(&pdev->dev);
pm_runtime_put_noidle(&pdev->dev);
sdhci_remove_host(host, 1);
clk_disable_unprepare(pxa->clk_io);
if (!IS_ERR(pxa->clk_core))
clk_disable_unprepare(pxa->clk_core);
sdhci_pltfm_free(pdev);
@ -457,11 +535,11 @@ static int sdhci_pxav3_runtime_suspend(struct device *dev)
struct sdhci_host *host = dev_get_drvdata(dev);
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct sdhci_pxa *pxa = pltfm_host->priv;
unsigned long flags;
int ret;
spin_lock_irqsave(&host->lock, flags);
host->runtime_suspended = true;
spin_unlock_irqrestore(&host->lock, flags);
ret = sdhci_runtime_suspend_host(host);
if (ret)
return ret;
clk_disable_unprepare(pxa->clk_io);
if (!IS_ERR(pxa->clk_core))
@ -475,17 +553,12 @@ static int sdhci_pxav3_runtime_resume(struct device *dev)
struct sdhci_host *host = dev_get_drvdata(dev);
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct sdhci_pxa *pxa = pltfm_host->priv;
unsigned long flags;
clk_prepare_enable(pxa->clk_io);
if (!IS_ERR(pxa->clk_core))
clk_prepare_enable(pxa->clk_core);
spin_lock_irqsave(&host->lock, flags);
host->runtime_suspended = false;
spin_unlock_irqrestore(&host->lock, flags);
return 0;
return sdhci_runtime_resume_host(host);
}
#endif

12
drivers/mmc/host/sdhci-s3c.c
View File

@ -12,6 +12,7 @@
* published by the Free Software Foundation.
*/
#include <linux/spinlock.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/platform_device.h>
@ -312,7 +313,14 @@ static void sdhci_cmu_set_clock(struct sdhci_host *host, unsigned int clock)
sdhci_s3c_set_clock(host, clock);
/* Reset SD Clock Enable */
clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
clk &= ~SDHCI_CLOCK_CARD_EN;
sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
spin_unlock_irq(&host->lock);
ret = clk_set_rate(ourhost->clk_bus[ourhost->cur_clk], clock);
spin_lock_irq(&host->lock);
if (ret != 0) {
dev_err(dev, "%s: failed to set clock rate %uHz\n",
mmc_hostname(host->mmc), clock);
@ -607,7 +615,9 @@ static int sdhci_s3c_probe(struct platform_device *pdev)
pm_runtime_use_autosuspend(&pdev->dev);
pm_suspend_ignore_children(&pdev->dev, 1);
mmc_of_parse(host->mmc);
ret = mmc_of_parse(host->mmc);
if (ret)
goto err_req_regs;
ret = sdhci_add_host(host);
if (ret) {

74
drivers/mmc/host/sdhci-sirf.c
View File

@ -15,7 +15,9 @@
#include <linux/mmc/slot-gpio.h>
#include "sdhci-pltfm.h"
#define SDHCI_CLK_DELAY_SETTING 0x4C
#define SDHCI_SIRF_8BITBUS BIT(3)
#define SIRF_TUNING_COUNT 128
struct sdhci_sirf_priv {
struct clk *clk;
@ -49,7 +51,76 @@ static void sdhci_sirf_set_bus_width(struct sdhci_host *host, int width)
sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
}
static int sdhci_sirf_execute_tuning(struct sdhci_host *host, u32 opcode)
{
int tuning_seq_cnt = 3;
u8 phase, tuned_phases[SIRF_TUNING_COUNT];
u8 tuned_phase_cnt = 0;
int rc, longest_range = 0;
int start = -1, end = 0, tuning_value = -1, range = 0;
u16 clock_setting;
struct mmc_host *mmc = host->mmc;
clock_setting = sdhci_readw(host, SDHCI_CLK_DELAY_SETTING);
clock_setting &= ~0x3fff;
retry:
phase = 0;
do {
sdhci_writel(host,
clock_setting | phase | (phase << 7) | (phase << 16),
SDHCI_CLK_DELAY_SETTING);
if (!mmc_send_tuning(mmc)) {
/* Tuning is successful at this tuning point */
tuned_phases[tuned_phase_cnt++] = phase;
dev_dbg(mmc_dev(mmc), "%s: Found good phase = %d\n",
mmc_hostname(mmc), phase);
if (start == -1)
start = phase;
end = phase;
range++;
if (phase == (SIRF_TUNING_COUNT - 1)
&& range > longest_range)
tuning_value = (start + end) / 2;
} else {
dev_dbg(mmc_dev(mmc), "%s: Found bad phase = %d\n",
mmc_hostname(mmc), phase);
if (range > longest_range) {
tuning_value = (start + end) / 2;
longest_range = range;
}
start = -1;
end = range = 0;
}
} while (++phase < ARRAY_SIZE(tuned_phases));
if (tuned_phase_cnt && tuning_value > 0) {
/*
* Finally set the selected phase in delay
* line hw block.
*/
phase = tuning_value;
sdhci_writel(host,
clock_setting | phase | (phase << 7) | (phase << 16),
SDHCI_CLK_DELAY_SETTING);
dev_dbg(mmc_dev(mmc), "%s: Setting the tuning phase to %d\n",
mmc_hostname(mmc), phase);
} else {
if (--tuning_seq_cnt)
goto retry;
/* Tuning failed */
dev_dbg(mmc_dev(mmc), "%s: No tuning point found\n",
mmc_hostname(mmc));
rc = -EIO;
}
return rc;
}
static struct sdhci_ops sdhci_sirf_ops = {
.platform_execute_tuning = sdhci_sirf_execute_tuning,
.set_clock = sdhci_set_clock,
.get_max_clock = sdhci_sirf_get_max_clk,
.set_bus_width = sdhci_sirf_set_bus_width,
@ -138,9 +209,6 @@ static int sdhci_sirf_remove(struct platform_device *pdev)
sdhci_pltfm_unregister(pdev);
if (gpio_is_valid(priv->gpio_cd))
mmc_gpio_free_cd(host->mmc);
clk_disable_unprepare(priv->clk);
return 0;
}

4
drivers/mmc/host/sdhci-st.c
View File

@ -78,10 +78,9 @@ static int sdhci_st_probe(struct platform_device *pdev)
}
ret = mmc_of_parse(host->mmc);
if (ret) {
dev_err(&pdev->dev, "Failed mmc_of_parse\n");
return ret;
goto err_of;
}
clk_prepare_enable(clk);
@ -108,6 +107,7 @@ static int sdhci_st_probe(struct platform_device *pdev)
err_out:
clk_disable_unprepare(clk);
err_of:
sdhci_pltfm_free(pdev);
return ret;

30
drivers/mmc/host/sdhci-tegra.c
View File

@ -41,6 +41,7 @@
#define NVQUIRK_DISABLE_SDR50 BIT(3)
#define NVQUIRK_DISABLE_SDR104 BIT(4)
#define NVQUIRK_DISABLE_DDR50 BIT(5)
#define NVQUIRK_SHADOW_XFER_MODE_REG BIT(6)
struct sdhci_tegra_soc_data {
const struct sdhci_pltfm_data *pdata;
@ -67,6 +68,31 @@ static u16 tegra_sdhci_readw(struct sdhci_host *host, int reg)
return readw(host->ioaddr + reg);
}
static void tegra_sdhci_writew(struct sdhci_host *host, u16 val, int reg)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct sdhci_tegra *tegra_host = pltfm_host->priv;
const struct sdhci_tegra_soc_data *soc_data = tegra_host->soc_data;
if (soc_data->nvquirks & NVQUIRK_SHADOW_XFER_MODE_REG) {
switch (reg) {
case SDHCI_TRANSFER_MODE:
/*
* Postpone this write, we must do it together with a
* command write that is down below.
*/
pltfm_host->xfer_mode_shadow = val;
return;
case SDHCI_COMMAND:
writel((val << 16) | pltfm_host->xfer_mode_shadow,
host->ioaddr + SDHCI_TRANSFER_MODE);
return;
}
}
writew(val, host->ioaddr + reg);
}
static void tegra_sdhci_writel(struct sdhci_host *host, u32 val, int reg)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
@ -147,6 +173,7 @@ static void tegra_sdhci_set_bus_width(struct sdhci_host *host, int bus_width)
static const struct sdhci_ops tegra_sdhci_ops = {
.get_ro = tegra_sdhci_get_ro,
.read_w = tegra_sdhci_readw,
.write_w = tegra_sdhci_writew,
.write_l = tegra_sdhci_writel,
.set_clock = sdhci_set_clock,
.set_bus_width = tegra_sdhci_set_bus_width,
@ -201,7 +228,8 @@ static struct sdhci_tegra_soc_data soc_data_tegra114 = {
.pdata = &sdhci_tegra114_pdata,
.nvquirks = NVQUIRK_DISABLE_SDR50 |
NVQUIRK_DISABLE_DDR50 |
NVQUIRK_DISABLE_SDR104,
NVQUIRK_DISABLE_SDR104 |
NVQUIRK_SHADOW_XFER_MODE_REG,
};
static const struct of_device_id sdhci_tegra_dt_match[] = {

117
drivers/mmc/host/sdhci.c
View File

@ -53,6 +53,9 @@ static void sdhci_finish_command(struct sdhci_host *);
static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode);
static void sdhci_tuning_timer(unsigned long data);
static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable);
static int sdhci_pre_dma_transfer(struct sdhci_host *host,
struct mmc_data *data,
struct sdhci_host_next *next);
#ifdef CONFIG_PM
static int sdhci_runtime_pm_get(struct sdhci_host *host);
@ -505,9 +508,8 @@ static int sdhci_adma_table_pre(struct sdhci_host *host,
goto fail;
BUG_ON(host->align_addr & host->align_mask);
host->sg_count = dma_map_sg(mmc_dev(host->mmc),
data->sg, data->sg_len, direction);
if (host->sg_count == 0)
host->sg_count = sdhci_pre_dma_transfer(host, data, NULL);
if (host->sg_count < 0)
goto unmap_align;
desc = host->adma_table;
@ -531,8 +533,6 @@ static int sdhci_adma_table_pre(struct sdhci_host *host,
if (offset) {
if (data->flags & MMC_DATA_WRITE) {
buffer = sdhci_kmap_atomic(sg, &flags);
WARN_ON(((long)buffer & (PAGE_SIZE - 1)) >
(PAGE_SIZE - offset));
memcpy(align, buffer, offset);
sdhci_kunmap_atomic(buffer, &flags);
}
@ -639,8 +639,6 @@ static void sdhci_adma_table_post(struct sdhci_host *host,
(sg_dma_address(sg) & host->align_mask);
buffer = sdhci_kmap_atomic(sg, &flags);
WARN_ON(((long)buffer & (PAGE_SIZE - 1)) >
(PAGE_SIZE - size));
memcpy(buffer, align, size);
sdhci_kunmap_atomic(buffer, &flags);
@ -649,6 +647,7 @@ static void sdhci_adma_table_post(struct sdhci_host *host,
}
}
if (!data->host_cookie)
dma_unmap_sg(mmc_dev(host->mmc), data->sg,
data->sg_len, direction);
}
@ -846,11 +845,7 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd)
} else {
int sg_cnt;
sg_cnt = dma_map_sg(mmc_dev(host->mmc),
data->sg, data->sg_len,
(data->flags & MMC_DATA_READ) ?
DMA_FROM_DEVICE :
DMA_TO_DEVICE);
sg_cnt = sdhci_pre_dma_transfer(host, data, NULL);
if (sg_cnt == 0) {
/*
* This only happens when someone fed
@ -909,7 +904,7 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd)
static void sdhci_set_transfer_mode(struct sdhci_host *host,
struct mmc_command *cmd)
{
u16 mode;
u16 mode = 0;
struct mmc_data *data = cmd->data;
if (data == NULL) {
@ -927,9 +922,11 @@ static void sdhci_set_transfer_mode(struct sdhci_host *host,
WARN_ON(!host->data);
if (!(host->quirks2 & SDHCI_QUIRK2_SUPPORT_SINGLE))
mode = SDHCI_TRNS_BLK_CNT_EN;
if (mmc_op_multi(cmd->opcode) || data->blocks > 1) {
mode |= SDHCI_TRNS_MULTI;
mode = SDHCI_TRNS_BLK_CNT_EN | SDHCI_TRNS_MULTI;
/*
* If we are sending CMD23, CMD12 never gets sent
* on successful completion (so no Auto-CMD12).
@ -963,8 +960,10 @@ static void sdhci_finish_data(struct sdhci_host *host)
if (host->flags & SDHCI_USE_ADMA)
sdhci_adma_table_post(host, data);
else {
dma_unmap_sg(mmc_dev(host->mmc), data->sg,
data->sg_len, (data->flags & MMC_DATA_READ) ?
if (!data->host_cookie)
dma_unmap_sg(mmc_dev(host->mmc),
data->sg, data->sg_len,
(data->flags & MMC_DATA_READ) ?
DMA_FROM_DEVICE : DMA_TO_DEVICE);
}
}
@ -1630,7 +1629,7 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
* signalling timeout and CRC errors even on CMD0. Resetting
* it on each ios seems to solve the problem.
*/
if(host->quirks & SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS)
if (host->quirks & SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS)
sdhci_do_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA);
mmiowb();
@ -1832,6 +1831,10 @@ static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host,
ctrl |= SDHCI_CTRL_VDD_180;
sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
/* Some controller need to do more when switching */
if (host->ops->voltage_switch)
host->ops->voltage_switch(host);
/* 1.8V regulator output should be stable within 5 ms */
ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
if (ctrl & SDHCI_CTRL_VDD_180)
@ -1960,6 +1963,8 @@ static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode)
ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
ctrl |= SDHCI_CTRL_EXEC_TUNING;
if (host->quirks2 & SDHCI_QUIRK2_TUNING_WORK_AROUND)
ctrl |= SDHCI_CTRL_TUNED_CLK;
sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
/*
@ -2129,6 +2134,77 @@ static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable)
}
}
static void sdhci_post_req(struct mmc_host *mmc, struct mmc_request *mrq,
int err)
{
struct sdhci_host *host = mmc_priv(mmc);
struct mmc_data *data = mrq->data;
if (host->flags & SDHCI_REQ_USE_DMA) {
if (data->host_cookie)
dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
data->flags & MMC_DATA_WRITE ?
DMA_TO_DEVICE : DMA_FROM_DEVICE);
mrq->data->host_cookie = 0;
}
}
static int sdhci_pre_dma_transfer(struct sdhci_host *host,
struct mmc_data *data,
struct sdhci_host_next *next)
{
int sg_count;
if (!next && data->host_cookie &&
data->host_cookie != host->next_data.cookie) {
pr_debug(DRIVER_NAME "[%s] invalid cookie: %d, next-cookie %d\n",
__func__, data->host_cookie, host->next_data.cookie);
data->host_cookie = 0;
}
/* Check if next job is already prepared */
if (next ||
(!next && data->host_cookie != host->next_data.cookie)) {
sg_count = dma_map_sg(mmc_dev(host->mmc), data->sg,
data->sg_len,
data->flags & MMC_DATA_WRITE ?
DMA_TO_DEVICE : DMA_FROM_DEVICE);
} else {
sg_count = host->next_data.sg_count;
host->next_data.sg_count = 0;
}
if (sg_count == 0)
return -EINVAL;
if (next) {
next->sg_count = sg_count;
data->host_cookie = ++next->cookie < 0 ? 1 : next->cookie;
} else
host->sg_count = sg_count;
return sg_count;
}
static void sdhci_pre_req(struct mmc_host *mmc, struct mmc_request *mrq,
bool is_first_req)
{
struct sdhci_host *host = mmc_priv(mmc);
if (mrq->data->host_cookie) {
mrq->data->host_cookie = 0;
return;
}
if (host->flags & SDHCI_REQ_USE_DMA)
if (sdhci_pre_dma_transfer(host,
mrq->data,
&host->next_data) < 0)
mrq->data->host_cookie = 0;
}
static void sdhci_card_event(struct mmc_host *mmc)
{
struct sdhci_host *host = mmc_priv(mmc);
@ -2162,6 +2238,8 @@ static void sdhci_card_event(struct mmc_host *mmc)
static const struct mmc_host_ops sdhci_ops = {
.request = sdhci_request,
.post_req = sdhci_post_req,
.pre_req = sdhci_pre_req,
.set_ios = sdhci_set_ios,
.get_cd = sdhci_get_cd,
.get_ro = sdhci_get_ro,
@ -2793,9 +2871,9 @@ int sdhci_runtime_resume_host(struct sdhci_host *host)
/* Force clock and power re-program */
host->pwr = 0;
host->clock = 0;
sdhci_do_start_signal_voltage_switch(host, &host->mmc->ios);
sdhci_do_set_ios(host, &host->mmc->ios);
sdhci_do_start_signal_voltage_switch(host, &host->mmc->ios);
if ((host_flags & SDHCI_PV_ENABLED) &&
!(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN)) {
spin_lock_irqsave(&host->lock, flags);
@ -3019,6 +3097,7 @@ int sdhci_add_host(struct sdhci_host *host)
host->max_clk = host->ops->get_max_clock(host);
}
host->next_data.cookie = 1;
/*
* In case of Host Controller v3.00, find out whether clock
* multiplier is supported.
@ -3338,9 +3417,9 @@ int sdhci_add_host(struct sdhci_host *host)
setup_timer(&host->timer, sdhci_timeout_timer, (unsigned long)host);
if (host->version >= SDHCI_SPEC_300) {
init_waitqueue_head(&host->buf_ready_int);
if (host->version >= SDHCI_SPEC_300) {
/* Initialize re-tuning timer */
init_timer(&host->tuning_timer);
host->tuning_timer.data = (unsigned long)host;

1
drivers/mmc/host/sdhci.h
View File

@ -339,6 +339,7 @@ struct sdhci_ops {
void (*adma_workaround)(struct sdhci_host *host, u32 intmask);
void (*platform_init)(struct sdhci_host *host);
void (*card_event)(struct sdhci_host *host);
void (*voltage_switch)(struct sdhci_host *host);
};
#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS

237
drivers/mmc/host/sdhci_f_sdh30.c Normal file
View File

@ -0,0 +1,237 @@
/*
* linux/drivers/mmc/host/sdhci_f_sdh30.c
*
* Copyright (C) 2013 - 2015 Fujitsu Semiconductor, Ltd
* Vincent Yang <vincent.yang@tw.fujitsu.com>
* Copyright (C) 2015 Linaro Ltd Andy Green <andy.green@linaro.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 2 of the License.
*/
#include <linux/err.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/clk.h>
#include "sdhci-pltfm.h"
/* F_SDH30 extended Controller registers */
#define F_SDH30_AHB_CONFIG 0x100
#define F_SDH30_AHB_BIGED 0x00000040
#define F_SDH30_BUSLOCK_DMA 0x00000020
#define F_SDH30_BUSLOCK_EN 0x00000010
#define F_SDH30_SIN 0x00000008
#define F_SDH30_AHB_INCR_16 0x00000004
#define F_SDH30_AHB_INCR_8 0x00000002
#define F_SDH30_AHB_INCR_4 0x00000001
#define F_SDH30_TUNING_SETTING 0x108
#define F_SDH30_CMD_CHK_DIS 0x00010000
#define F_SDH30_IO_CONTROL2 0x114
#define F_SDH30_CRES_O_DN 0x00080000
#define F_SDH30_MSEL_O_1_8 0x00040000
#define F_SDH30_ESD_CONTROL 0x124
#define F_SDH30_EMMC_RST 0x00000002
#define F_SDH30_EMMC_HS200 0x01000000
#define F_SDH30_CMD_DAT_DELAY 0x200
#define F_SDH30_MIN_CLOCK 400000
struct f_sdhost_priv {
struct clk *clk_iface;
struct clk *clk;
u32 vendor_hs200;
struct device *dev;
};
void sdhci_f_sdh30_soft_voltage_switch(struct sdhci_host *host)
{
struct f_sdhost_priv *priv = sdhci_priv(host);
u32 ctrl = 0;
usleep_range(2500, 3000);
ctrl = sdhci_readl(host, F_SDH30_IO_CONTROL2);
ctrl |= F_SDH30_CRES_O_DN;
sdhci_writel(host, ctrl, F_SDH30_IO_CONTROL2);
ctrl |= F_SDH30_MSEL_O_1_8;
sdhci_writel(host, ctrl, F_SDH30_IO_CONTROL2);
ctrl &= ~F_SDH30_CRES_O_DN;
sdhci_writel(host, ctrl, F_SDH30_IO_CONTROL2);
usleep_range(2500, 3000);
if (priv->vendor_hs200) {
dev_info(priv->dev, "%s: setting hs200\n", __func__);
ctrl = sdhci_readl(host, F_SDH30_ESD_CONTROL);
ctrl |= priv->vendor_hs200;
sdhci_writel(host, ctrl, F_SDH30_ESD_CONTROL);
}
ctrl = sdhci_readl(host, F_SDH30_TUNING_SETTING);
ctrl |= F_SDH30_CMD_CHK_DIS;
sdhci_writel(host, ctrl, F_SDH30_TUNING_SETTING);
}
unsigned int sdhci_f_sdh30_get_min_clock(struct sdhci_host *host)
{
return F_SDH30_MIN_CLOCK;
}
void sdhci_f_sdh30_reset(struct sdhci_host *host, u8 mask)
{
if (sdhci_readw(host, SDHCI_CLOCK_CONTROL) == 0)
sdhci_writew(host, 0xBC01, SDHCI_CLOCK_CONTROL);
sdhci_reset(host, mask);
}
static const struct sdhci_ops sdhci_f_sdh30_ops = {
.voltage_switch = sdhci_f_sdh30_soft_voltage_switch,
.get_min_clock = sdhci_f_sdh30_get_min_clock,
.reset = sdhci_f_sdh30_reset,
.set_clock = sdhci_set_clock,
.set_bus_width = sdhci_set_bus_width,
.set_uhs_signaling = sdhci_set_uhs_signaling,
};
static int sdhci_f_sdh30_probe(struct platform_device *pdev)
{
struct sdhci_host *host;
struct device *dev = &pdev->dev;
struct resource *res;
int irq, ctrl = 0, ret = 0;
struct f_sdhost_priv *priv;
u32 reg = 0;
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_err(dev, "%s: no irq specified\n", __func__);
return irq;
}
host = sdhci_alloc_host(dev, sizeof(struct sdhci_host) +
sizeof(struct f_sdhost_priv));
if (IS_ERR(host))
return PTR_ERR(host);
priv = sdhci_priv(host);
priv->dev = dev;
host->quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
SDHCI_QUIRK_INVERTED_WRITE_PROTECT;
host->quirks2 = SDHCI_QUIRK2_SUPPORT_SINGLE |
SDHCI_QUIRK2_TUNING_WORK_AROUND;
ret = mmc_of_parse(host->mmc);
if (ret)
goto err;
platform_set_drvdata(pdev, host);
sdhci_get_of_property(pdev);
host->hw_name = "f_sdh30";
host->ops = &sdhci_f_sdh30_ops;
host->irq = irq;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
host->ioaddr = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(host->ioaddr)) {
ret = PTR_ERR(host->ioaddr);
goto err;
}
priv->clk_iface = devm_clk_get(&pdev->dev, "iface");
if (IS_ERR(priv->clk_iface)) {
ret = PTR_ERR(priv->clk_iface);
goto err;
}
ret = clk_prepare_enable(priv->clk_iface);
if (ret)
goto err;
priv->clk = devm_clk_get(&pdev->dev, "core");
if (IS_ERR(priv->clk)) {
ret = PTR_ERR(priv->clk);
goto err_clk;
}
ret = clk_prepare_enable(priv->clk);
if (ret)
goto err_clk;
/* init vendor specific regs */
ctrl = sdhci_readw(host, F_SDH30_AHB_CONFIG);
ctrl |= F_SDH30_SIN | F_SDH30_AHB_INCR_16 | F_SDH30_AHB_INCR_8 |
F_SDH30_AHB_INCR_4;
ctrl &= ~(F_SDH30_AHB_BIGED | F_SDH30_BUSLOCK_EN);
sdhci_writew(host, ctrl, F_SDH30_AHB_CONFIG);
reg = sdhci_readl(host, F_SDH30_ESD_CONTROL);
sdhci_writel(host, reg & ~F_SDH30_EMMC_RST, F_SDH30_ESD_CONTROL);
msleep(20);
sdhci_writel(host, reg | F_SDH30_EMMC_RST, F_SDH30_ESD_CONTROL);
reg = sdhci_readl(host, SDHCI_CAPABILITIES);
if (reg & SDHCI_CAN_DO_8BIT)
priv->vendor_hs200 = F_SDH30_EMMC_HS200;
ret = sdhci_add_host(host);
if (ret)
goto err_add_host;
return 0;
err_add_host:
clk_disable_unprepare(priv->clk);
err_clk:
clk_disable_unprepare(priv->clk_iface);
err:
sdhci_free_host(host);
return ret;
}
static int sdhci_f_sdh30_remove(struct platform_device *pdev)
{
struct sdhci_host *host = platform_get_drvdata(pdev);
struct f_sdhost_priv *priv = sdhci_priv(host);
sdhci_remove_host(host, readl(host->ioaddr + SDHCI_INT_STATUS) ==
0xffffffff);
clk_disable_unprepare(priv->clk_iface);
clk_disable_unprepare(priv->clk);
sdhci_free_host(host);
platform_set_drvdata(pdev, NULL);
return 0;
}
static const struct of_device_id f_sdh30_dt_ids[] = {
{ .compatible = "fujitsu,mb86s70-sdhci-3.0" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, f_sdh30_dt_ids);
static struct platform_driver sdhci_f_sdh30_driver = {
.driver = {
.name = "f_sdh30",
.of_match_table = f_sdh30_dt_ids,
.pm = SDHCI_PLTFM_PMOPS,
},
.probe = sdhci_f_sdh30_probe,
.remove = sdhci_f_sdh30_remove,
};
module_platform_driver(sdhci_f_sdh30_driver);
MODULE_DESCRIPTION("F_SDH30 SD Card Controller driver");
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("FUJITSU SEMICONDUCTOR LTD.");
MODULE_ALIAS("platform:f_sdh30");

117
drivers/mmc/host/sh_mobile_sdhi.c
View File

@ -35,10 +35,13 @@
#define EXT_ACC 0xe4
#define host_to_priv(host) container_of((host)->pdata, struct sh_mobile_sdhi, mmc_data)
struct sh_mobile_sdhi_of_data {
unsigned long tmio_flags;
unsigned long capabilities;
unsigned long capabilities2;
enum dma_slave_buswidth dma_buswidth;
dma_addr_t dma_rx_offset;
};
@ -58,6 +61,7 @@ static const struct sh_mobile_sdhi_of_data of_rcar_gen2_compatible = {
.tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_WRPROTECT_DISABLE |
TMIO_MMC_CLK_ACTUAL,
.capabilities = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ,
.dma_buswidth = DMA_SLAVE_BUSWIDTH_4_BYTES,
.dma_rx_offset = 0x2000,
};
@ -84,16 +88,43 @@ struct sh_mobile_sdhi {
struct tmio_mmc_dma dma_priv;
};
static void sh_mobile_sdhi_sdbuf_width(struct tmio_mmc_host *host, int width)
{
u32 val;
/*
* see also
* sh_mobile_sdhi_of_data :: dma_buswidth
*/
switch (sd_ctrl_read16(host, CTL_VERSION)) {
case 0x490C:
val = (width == 32) ? 0x0001 : 0x0000;
break;
case 0xCB0D:
val = (width == 32) ? 0x0000 : 0x0001;
break;
default:
/* nothing to do */
return;
}
sd_ctrl_write16(host, EXT_ACC, val);
}
static int sh_mobile_sdhi_clk_enable(struct platform_device *pdev, unsigned int *f)
{
struct mmc_host *mmc = platform_get_drvdata(pdev);
struct tmio_mmc_host *host = mmc_priv(mmc);
struct sh_mobile_sdhi *priv = container_of(host->pdata, struct sh_mobile_sdhi, mmc_data);
struct sh_mobile_sdhi *priv = host_to_priv(host);
int ret = clk_prepare_enable(priv->clk);
if (ret < 0)
return ret;
*f = clk_get_rate(priv->clk);
/* enable 16bit data access on SDBUF as default */
sh_mobile_sdhi_sdbuf_width(host, 16);
return 0;
}
@ -101,7 +132,7 @@ static void sh_mobile_sdhi_clk_disable(struct platform_device *pdev)
{
struct mmc_host *mmc = platform_get_drvdata(pdev);
struct tmio_mmc_host *host = mmc_priv(mmc);
struct sh_mobile_sdhi *priv = container_of(host->pdata, struct sh_mobile_sdhi, mmc_data);
struct sh_mobile_sdhi *priv = host_to_priv(host);
clk_disable_unprepare(priv->clk);
}
@ -113,7 +144,7 @@ static int sh_mobile_sdhi_wait_idle(struct tmio_mmc_host *host)
udelay(1);
if (!timeout) {
dev_warn(host->pdata->dev, "timeout waiting for SD bus idle\n");
dev_warn(&host->pdev->dev, "timeout waiting for SD bus idle\n");
return -EBUSY;
}
@ -156,14 +187,13 @@ static int sh_mobile_sdhi_multi_io_quirk(struct mmc_card *card,
return blk_size;
}
static void sh_mobile_sdhi_cd_wakeup(const struct platform_device *pdev)
static void sh_mobile_sdhi_enable_dma(struct tmio_mmc_host *host, bool enable)
{
mmc_detect_change(platform_get_drvdata(pdev), msecs_to_jiffies(100));
}
sd_ctrl_write16(host, CTL_DMA_ENABLE, enable ? 2 : 0);
static const struct sh_mobile_sdhi_ops sdhi_ops = {
.cd_wakeup = sh_mobile_sdhi_cd_wakeup,
};
/* enable 32bit access if DMA mode if possibile */
sh_mobile_sdhi_sdbuf_width(host, enable ? 32 : 16);
}
static int sh_mobile_sdhi_probe(struct platform_device *pdev)
{
@ -177,7 +207,6 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
int irq, ret, i = 0;
bool multiplexed_isr = true;
struct tmio_mmc_dma *dma_priv;
u16 ver;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res)
@ -192,26 +221,31 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
mmc_data = &priv->mmc_data;
dma_priv = &priv->dma_priv;
if (p) {
if (p->init) {
ret = p->init(pdev, &sdhi_ops);
if (ret)
return ret;
}
}
priv->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(priv->clk)) {
ret = PTR_ERR(priv->clk);
dev_err(&pdev->dev, "cannot get clock: %d\n", ret);
goto eclkget;
goto eprobe;
}
mmc_data->clk_enable = sh_mobile_sdhi_clk_enable;
mmc_data->clk_disable = sh_mobile_sdhi_clk_disable;
host = tmio_mmc_host_alloc(pdev);
if (!host) {
ret = -ENOMEM;
goto eprobe;
}
host->dma = dma_priv;
host->write16_hook = sh_mobile_sdhi_write16_hook;
host->clk_enable = sh_mobile_sdhi_clk_enable;
host->clk_disable = sh_mobile_sdhi_clk_disable;
host->multi_io_quirk = sh_mobile_sdhi_multi_io_quirk;
/* SD control register space size is 0x100, 0x200 for bus_shift=1 */
if (resource_size(res) > 0x100)
host->bus_shift = 1;
else
host->bus_shift = 0;
mmc_data->capabilities = MMC_CAP_MMC_HIGHSPEED;
mmc_data->write16_hook = sh_mobile_sdhi_write16_hook;
mmc_data->multi_io_quirk = sh_mobile_sdhi_multi_io_quirk;
if (p) {
mmc_data->flags = p->tmio_flags;
mmc_data->ocr_mask = p->tmio_ocr_mask;
@ -231,11 +265,10 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
dma_priv->slave_id_rx = p->dma_slave_rx;
}
}
dma_priv->alignment_shift = 1; /* 2-byte alignment */
dma_priv->filter = shdma_chan_filter;
dma_priv->enable = sh_mobile_sdhi_enable_dma;
mmc_data->dma = dma_priv;
mmc_data->alignment_shift = 1; /* 2-byte alignment */
/*
* All SDHI blocks support 2-byte and larger block sizes in 4-bit
@ -258,33 +291,18 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
*/
mmc_data->flags |= TMIO_MMC_SDIO_STATUS_QUIRK;
/*
* All SDHI have DMA control register
*/
mmc_data->flags |= TMIO_MMC_HAVE_CTL_DMA_REG;
if (of_id && of_id->data) {
const struct sh_mobile_sdhi_of_data *of_data = of_id->data;
mmc_data->flags |= of_data->tmio_flags;
mmc_data->capabilities |= of_data->capabilities;
mmc_data->capabilities2 |= of_data->capabilities2;
dma_priv->dma_rx_offset = of_data->dma_rx_offset;
mmc_data->dma_rx_offset = of_data->dma_rx_offset;
dma_priv->dma_buswidth = of_data->dma_buswidth;
}
/* SD control register space size is 0x100, 0x200 for bus_shift=1 */
mmc_data->bus_shift = resource_size(res) >> 9;
ret = tmio_mmc_host_probe(&host, pdev, mmc_data);
ret = tmio_mmc_host_probe(host, mmc_data);
if (ret < 0)
goto eprobe;
/*
* FIXME:
* this Workaround can be more clever method
*/
ver = sd_ctrl_read16(host, CTL_VERSION);
if (ver == 0xCB0D)
sd_ctrl_write16(host, EXT_ACC, 1);
goto efree;
/*
* Allow one or more specific (named) ISRs or
@ -351,10 +369,9 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
eirq:
tmio_mmc_host_remove(host);
efree:
tmio_mmc_host_free(host);
eprobe:
eclkget:
if (p && p->cleanup)
p->cleanup(pdev);
return ret;
}
@ -362,13 +379,9 @@ static int sh_mobile_sdhi_remove(struct platform_device *pdev)
{
struct mmc_host *mmc = platform_get_drvdata(pdev);
struct tmio_mmc_host *host = mmc_priv(mmc);
struct sh_mobile_sdhi_info *p = pdev->dev.platform_data;
tmio_mmc_host_remove(host);
if (p && p->cleanup)
p->cleanup(pdev);
return 0;
}

29
drivers/mmc/host/sunxi-mmc.c
View File

@ -252,7 +252,7 @@ static int sunxi_mmc_reset_host(struct sunxi_mmc_host *host)
unsigned long expire = jiffies + msecs_to_jiffies(250);
u32 rval;
mmc_writel(host, REG_CMDR, SDXC_HARDWARE_RESET);
mmc_writel(host, REG_GCTRL, SDXC_HARDWARE_RESET);
do {
rval = mmc_readl(host, REG_GCTRL);
} while (time_before(jiffies, expire) && (rval & SDXC_HARDWARE_RESET));
@ -310,7 +310,9 @@ static void sunxi_mmc_init_idma_des(struct sunxi_mmc_host *host,
}
pdes[0].config |= SDXC_IDMAC_DES0_FD;
pdes[i - 1].config = SDXC_IDMAC_DES0_OWN | SDXC_IDMAC_DES0_LD;
pdes[i - 1].config |= SDXC_IDMAC_DES0_LD | SDXC_IDMAC_DES0_ER;
pdes[i - 1].config &= ~SDXC_IDMAC_DES0_DIC;
pdes[i - 1].buf_addr_ptr2 = 0;
/*
* Avoid the io-store starting the idmac hitting io-mem before the
@ -570,6 +572,15 @@ static irqreturn_t sunxi_mmc_handle_manual_stop(int irq, void *dev_id)
}
dev_err(mmc_dev(host->mmc), "data error, sending stop command\n");
/*
* We will never have more than one outstanding request,
* and we do not complete the request until after
* we've cleared host->manual_stop_mrq so we do not need to
* spin lock this function.
* Additionally we have wait states within this function
* so having it in a lock is a very bad idea.
*/
sunxi_mmc_send_manual_stop(host, mrq);
spin_lock_irqsave(&host->lock, iflags);
@ -616,7 +627,7 @@ static int sunxi_mmc_oclk_onoff(struct sunxi_mmc_host *host, u32 oclk_en)
static int sunxi_mmc_clk_set_rate(struct sunxi_mmc_host *host,
struct mmc_ios *ios)
{
u32 rate, oclk_dly, rval, sclk_dly, src_clk;
u32 rate, oclk_dly, rval, sclk_dly;
int ret;
rate = clk_round_rate(host->clk_mmc, ios->clock);
@ -661,14 +672,6 @@ static int sunxi_mmc_clk_set_rate(struct sunxi_mmc_host *host,
sclk_dly = 4;
}
src_clk = clk_get_rate(clk_get_parent(host->clk_mmc));
if (src_clk >= 300000000 && src_clk <= 400000000) {
if (oclk_dly)
oclk_dly--;
if (sclk_dly)
sclk_dly--;
}
clk_sunxi_mmc_phase_control(host->clk_mmc, sclk_dly, oclk_dly);
return sunxi_mmc_oclk_onoff(host, 1);
@ -766,6 +769,7 @@ static void sunxi_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
unsigned long iflags;
u32 imask = SDXC_INTERRUPT_ERROR_BIT;
u32 cmd_val = SDXC_START | (cmd->opcode & 0x3f);
bool wait_dma = host->wait_dma;
int ret;
/* Check for set_ios errors (should never happen) */
@ -816,7 +820,7 @@ static void sunxi_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
if (cmd->data->flags & MMC_DATA_WRITE)
cmd_val |= SDXC_WRITE;
else
host->wait_dma = true;
wait_dma = true;
} else {
imask |= SDXC_COMMAND_DONE;
}
@ -850,6 +854,7 @@ static void sunxi_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
}
host->mrq = mrq;
host->wait_dma = wait_dma;
mmc_writel(host, REG_IMASK, host->sdio_imask | imask);
mmc_writel(host, REG_CARG, cmd->arg);
mmc_writel(host, REG_CMDR, cmd_val);

15
drivers/mmc/host/tmio_mmc.c
View File

@ -88,14 +88,19 @@ static int tmio_mmc_probe(struct platform_device *pdev)
if (!res)
return -EINVAL;
/* SD control register space size is 0x200, 0x400 for bus_shift=1 */
pdata->bus_shift = resource_size(res) >> 10;
pdata->flags |= TMIO_MMC_HAVE_HIGH_REG;
ret = tmio_mmc_host_probe(&host, pdev, pdata);
if (ret)
host = tmio_mmc_host_alloc(pdev);
if (!host)
goto cell_disable;
/* SD control register space size is 0x200, 0x400 for bus_shift=1 */
host->bus_shift = resource_size(res) >> 10;
ret = tmio_mmc_host_probe(host, pdata);
if (ret)
goto host_free;
ret = request_irq(irq, tmio_mmc_irq, IRQF_TRIGGER_FALLING,
dev_name(&pdev->dev), host);
if (ret)
@ -108,6 +113,8 @@ static int tmio_mmc_probe(struct platform_device *pdev)
host_remove:
tmio_mmc_host_remove(host);
host_free:
tmio_mmc_host_free(host);
cell_disable:
if (cell->disable)
cell->disable(pdev);

43
drivers/mmc/host/tmio_mmc.h
View File

@ -16,6 +16,7 @@
#ifndef TMIO_MMC_H
#define TMIO_MMC_H
#include <linux/dmaengine.h>
#include <linux/highmem.h>
#include <linux/mmc/tmio.h>
#include <linux/mutex.h>
@ -39,6 +40,17 @@
#define TMIO_MASK_IRQ (TMIO_MASK_READOP | TMIO_MASK_WRITEOP | TMIO_MASK_CMD)
struct tmio_mmc_data;
struct tmio_mmc_host;
struct tmio_mmc_dma {
void *chan_priv_tx;
void *chan_priv_rx;
int slave_id_tx;
int slave_id_rx;
enum dma_slave_buswidth dma_buswidth;
bool (*filter)(struct dma_chan *chan, void *arg);
void (*enable)(struct tmio_mmc_host *host, bool enable);
};
struct tmio_mmc_host {
void __iomem *ctl;
@ -56,9 +68,11 @@ struct tmio_mmc_host {
struct scatterlist *sg_orig;
unsigned int sg_len;
unsigned int sg_off;
unsigned long bus_shift;
struct platform_device *pdev;
struct tmio_mmc_data *pdata;
struct tmio_mmc_dma *dma;
/* DMA support */
bool force_pio;
@ -83,10 +97,17 @@ struct tmio_mmc_host {
struct mutex ios_lock; /* protect set_ios() context */
bool native_hotplug;
bool sdio_irq_enabled;
int (*write16_hook)(struct tmio_mmc_host *host, int addr);
int (*clk_enable)(struct platform_device *pdev, unsigned int *f);
void (*clk_disable)(struct platform_device *pdev);
int (*multi_io_quirk)(struct mmc_card *card,
unsigned int direction, int blk_size);
};
int tmio_mmc_host_probe(struct tmio_mmc_host **host,
struct platform_device *pdev,
struct tmio_mmc_host *tmio_mmc_host_alloc(struct platform_device *pdev);
void tmio_mmc_host_free(struct tmio_mmc_host *host);
int tmio_mmc_host_probe(struct tmio_mmc_host *host,
struct tmio_mmc_data *pdata);
void tmio_mmc_host_remove(struct tmio_mmc_host *host);
void tmio_mmc_do_data_irq(struct tmio_mmc_host *host);
@ -151,19 +172,19 @@ int tmio_mmc_host_runtime_resume(struct device *dev);
static inline u16 sd_ctrl_read16(struct tmio_mmc_host *host, int addr)
{
return readw(host->ctl + (addr << host->pdata->bus_shift));
return readw(host->ctl + (addr << host->bus_shift));
}
static inline void sd_ctrl_read16_rep(struct tmio_mmc_host *host, int addr,
u16 *buf, int count)
{
readsw(host->ctl + (addr << host->pdata->bus_shift), buf, count);
readsw(host->ctl + (addr << host->bus_shift), buf, count);
}
static inline u32 sd_ctrl_read32(struct tmio_mmc_host *host, int addr)
{
return readw(host->ctl + (addr << host->pdata->bus_shift)) |
readw(host->ctl + ((addr + 2) << host->pdata->bus_shift)) << 16;
return readw(host->ctl + (addr << host->bus_shift)) |
readw(host->ctl + ((addr + 2) << host->bus_shift)) << 16;
}
static inline void sd_ctrl_write16(struct tmio_mmc_host *host, int addr, u16 val)
@ -171,21 +192,21 @@ static inline void sd_ctrl_write16(struct tmio_mmc_host *host, int addr, u16 val
/* If there is a hook and it returns non-zero then there
* is an error and the write should be skipped
*/
if (host->pdata->write16_hook && host->pdata->write16_hook(host, addr))
if (host->write16_hook && host->write16_hook(host, addr))
return;
writew(val, host->ctl + (addr << host->pdata->bus_shift));
writew(val, host->ctl + (addr << host->bus_shift));
}
static inline void sd_ctrl_write16_rep(struct tmio_mmc_host *host, int addr,
u16 *buf, int count)
{
writesw(host->ctl + (addr << host->pdata->bus_shift), buf, count);
writesw(host->ctl + (addr << host->bus_shift), buf, count);
}
static inline void sd_ctrl_write32(struct tmio_mmc_host *host, int addr, u32 val)
{
writew(val, host->ctl + (addr << host->pdata->bus_shift));
writew(val >> 16, host->ctl + ((addr + 2) << host->pdata->bus_shift));
writew(val, host->ctl + (addr << host->bus_shift));
writew(val >> 16, host->ctl + ((addr + 2) << host->bus_shift));
}

34
drivers/mmc/host/tmio_mmc_dma.c
View File

@ -28,8 +28,8 @@ void tmio_mmc_enable_dma(struct tmio_mmc_host *host, bool enable)
if (!host->chan_tx || !host->chan_rx)
return;
if (host->pdata->flags & TMIO_MMC_HAVE_CTL_DMA_REG)
sd_ctrl_write16(host, CTL_DMA_ENABLE, enable ? 2 : 0);
if (host->dma->enable)
host->dma->enable(host, enable);
}
void tmio_mmc_abort_dma(struct tmio_mmc_host *host)
@ -49,11 +49,10 @@ static void tmio_mmc_start_dma_rx(struct tmio_mmc_host *host)
struct scatterlist *sg = host->sg_ptr, *sg_tmp;
struct dma_async_tx_descriptor *desc = NULL;
struct dma_chan *chan = host->chan_rx;
struct tmio_mmc_data *pdata = host->pdata;
dma_cookie_t cookie;
int ret, i;
bool aligned = true, multiple = true;
unsigned int align = (1 << pdata->dma->alignment_shift) - 1;
unsigned int align = (1 << host->pdata->alignment_shift) - 1;
for_each_sg(sg, sg_tmp, host->sg_len, i) {
if (sg_tmp->offset & align)
@ -126,11 +125,10 @@ static void tmio_mmc_start_dma_tx(struct tmio_mmc_host *host)
struct scatterlist *sg = host->sg_ptr, *sg_tmp;
struct dma_async_tx_descriptor *desc = NULL;
struct dma_chan *chan = host->chan_tx;
struct tmio_mmc_data *pdata = host->pdata;
dma_cookie_t cookie;
int ret, i;
bool aligned = true, multiple = true;
unsigned int align = (1 << pdata->dma->alignment_shift) - 1;
unsigned int align = (1 << host->pdata->alignment_shift) - 1;
for_each_sg(sg, sg_tmp, host->sg_len, i) {
if (sg_tmp->offset & align)
@ -262,8 +260,8 @@ out:
void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdata)
{
/* We can only either use DMA for both Tx and Rx or not use it at all */
if (!pdata->dma || (!host->pdev->dev.of_node &&
(!pdata->dma->chan_priv_tx || !pdata->dma->chan_priv_rx)))
if (!host->dma || (!host->pdev->dev.of_node &&
(!host->dma->chan_priv_tx || !host->dma->chan_priv_rx)))
return;
if (!host->chan_tx && !host->chan_rx) {
@ -280,7 +278,7 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat
dma_cap_set(DMA_SLAVE, mask);
host->chan_tx = dma_request_slave_channel_compat(mask,
pdata->dma->filter, pdata->dma->chan_priv_tx,
host->dma->filter, host->dma->chan_priv_tx,
&host->pdev->dev, "tx");
dev_dbg(&host->pdev->dev, "%s: TX: got channel %p\n", __func__,
host->chan_tx);
@ -288,10 +286,12 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat
if (!host->chan_tx)
return;
if (pdata->dma->chan_priv_tx)
cfg.slave_id = pdata->dma->slave_id_tx;
if (host->dma->chan_priv_tx)
cfg.slave_id = host->dma->slave_id_tx;
cfg.direction = DMA_MEM_TO_DEV;
cfg.dst_addr = res->start + (CTL_SD_DATA_PORT << host->pdata->bus_shift);
cfg.dst_addr = res->start + (CTL_SD_DATA_PORT << host->bus_shift);
cfg.dst_addr_width = host->dma->dma_buswidth;
if (!cfg.dst_addr_width)
cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
cfg.src_addr = 0;
ret = dmaengine_slave_config(host->chan_tx, &cfg);
@ -299,7 +299,7 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat
goto ecfgtx;
host->chan_rx = dma_request_slave_channel_compat(mask,
pdata->dma->filter, pdata->dma->chan_priv_rx,
host->dma->filter, host->dma->chan_priv_rx,
&host->pdev->dev, "rx");
dev_dbg(&host->pdev->dev, "%s: RX: got channel %p\n", __func__,
host->chan_rx);
@ -307,10 +307,12 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat
if (!host->chan_rx)
goto ereqrx;
if (pdata->dma->chan_priv_rx)
cfg.slave_id = pdata->dma->slave_id_rx;
if (host->dma->chan_priv_rx)
cfg.slave_id = host->dma->slave_id_rx;
cfg.direction = DMA_DEV_TO_MEM;
cfg.src_addr = cfg.dst_addr + pdata->dma->dma_rx_offset;
cfg.src_addr = cfg.dst_addr + host->pdata->dma_rx_offset;
cfg.src_addr_width = host->dma->dma_buswidth;
if (!cfg.src_addr_width)
cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
cfg.dst_addr = 0;
ret = dmaengine_slave_config(host->chan_rx, &cfg);

61
drivers/mmc/host/tmio_mmc_pio.c
View File

@ -835,13 +835,12 @@ fail:
static int tmio_mmc_clk_update(struct tmio_mmc_host *host)
{
struct mmc_host *mmc = host->mmc;
struct tmio_mmc_data *pdata = host->pdata;
int ret;
if (!pdata->clk_enable)
if (!host->clk_enable)
return -ENOTSUPP;
ret = pdata->clk_enable(host->pdev, &mmc->f_max);
ret = host->clk_enable(host->pdev, &mmc->f_max);
if (!ret)
mmc->f_min = mmc->f_max / 512;
@ -1005,10 +1004,9 @@ static int tmio_multi_io_quirk(struct mmc_card *card,
unsigned int direction, int blk_size)
{
struct tmio_mmc_host *host = mmc_priv(card->host);
struct tmio_mmc_data *pdata = host->pdata;
if (pdata->multi_io_quirk)
return pdata->multi_io_quirk(card, direction, blk_size);
if (host->multi_io_quirk)
return host->multi_io_quirk(card, direction, blk_size);
return blk_size;
}
@ -1054,12 +1052,37 @@ static void tmio_mmc_of_parse(struct platform_device *pdev,
pdata->flags |= TMIO_MMC_WRPROTECT_DISABLE;
}
int tmio_mmc_host_probe(struct tmio_mmc_host **host,
struct platform_device *pdev,
struct tmio_mmc_host*
tmio_mmc_host_alloc(struct platform_device *pdev)
{
struct tmio_mmc_host *host;
struct mmc_host *mmc;
mmc = mmc_alloc_host(sizeof(struct tmio_mmc_host), &pdev->dev);
if (!mmc)
return NULL;
host = mmc_priv(mmc);
host->mmc = mmc;
host->pdev = pdev;
return host;
}
EXPORT_SYMBOL(tmio_mmc_host_alloc);
void tmio_mmc_host_free(struct tmio_mmc_host *host)
{
mmc_free_host(host->mmc);
host->mmc = NULL;
}
EXPORT_SYMBOL(tmio_mmc_host_free);
int tmio_mmc_host_probe(struct tmio_mmc_host *_host,
struct tmio_mmc_data *pdata)
{
struct tmio_mmc_host *_host;
struct mmc_host *mmc;
struct platform_device *pdev = _host->pdev;
struct mmc_host *mmc = _host->mmc;
struct resource *res_ctl;
int ret;
u32 irq_mask = TMIO_MASK_CMD;
@ -1067,25 +1090,17 @@ int tmio_mmc_host_probe(struct tmio_mmc_host **host,
tmio_mmc_of_parse(pdev, pdata);
if (!(pdata->flags & TMIO_MMC_HAS_IDLE_WAIT))
pdata->write16_hook = NULL;
_host->write16_hook = NULL;
res_ctl = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res_ctl)
return -EINVAL;
mmc = mmc_alloc_host(sizeof(struct tmio_mmc_host), &pdev->dev);
if (!mmc)
return -ENOMEM;
ret = mmc_of_parse(mmc);
if (ret < 0)
goto host_free;
pdata->dev = &pdev->dev;
_host = mmc_priv(mmc);
_host->pdata = pdata;
_host->mmc = mmc;
_host->pdev = pdev;
platform_set_drvdata(pdev, mmc);
_host->set_pwr = pdata->set_pwr;
@ -1192,12 +1207,9 @@ int tmio_mmc_host_probe(struct tmio_mmc_host **host,
mmc_gpiod_request_cd_irq(mmc);
}
*host = _host;
return 0;
host_free:
mmc_free_host(mmc);
return ret;
}
@ -1222,7 +1234,6 @@ void tmio_mmc_host_remove(struct tmio_mmc_host *host)
pm_runtime_disable(&pdev->dev);
iounmap(host->ctl);
mmc_free_host(mmc);
}
EXPORT_SYMBOL(tmio_mmc_host_remove);
@ -1237,8 +1248,8 @@ int tmio_mmc_host_runtime_suspend(struct device *dev)
if (host->clk_cache)
tmio_mmc_clk_stop(host);
if (host->pdata->clk_disable)
host->pdata->clk_disable(host->pdev);
if (host->clk_disable)
host->clk_disable(host->pdev);
return 0;
}

17
drivers/mmc/host/toshsd.c
View File

@ -176,7 +176,8 @@ static irqreturn_t toshsd_thread_irq(int irq, void *dev_id)
spin_lock_irqsave(&host->lock, flags);
if (!sg_miter_next(sg_miter))
return IRQ_HANDLED;
goto done;
buf = sg_miter->addr;
/* Ensure we dont read more than one block. The chip will interrupt us
@ -198,6 +199,7 @@ static irqreturn_t toshsd_thread_irq(int irq, void *dev_id)
sg_miter->consumed = count;
sg_miter_stop(sg_miter);
done:
spin_unlock_irqrestore(&host->lock, flags);
return IRQ_HANDLED;
@ -699,18 +701,7 @@ static struct pci_driver toshsd_driver = {
.driver.pm = &toshsd_pm_ops,
};
static int __init toshsd_drv_init(void)
{
return pci_register_driver(&toshsd_driver);
}
static void __exit toshsd_drv_exit(void)
{
pci_unregister_driver(&toshsd_driver);
}
module_init(toshsd_drv_init);
module_exit(toshsd_drv_exit);
module_pci_driver(toshsd_driver);
MODULE_AUTHOR("Ondrej Zary, Richard Betts");
MODULE_DESCRIPTION("Toshiba PCI Secure Digital Host Controller Interface driver");

4
drivers/mmc/host/vub300.c
View File

@ -659,7 +659,7 @@ static void __vub300_irqpoll_response(struct vub300_mmc_host *vub300)
static void __do_poll(struct vub300_mmc_host *vub300)
{
/* cmd_mutex is held by vub300_pollwork_thread */
long commretval;
unsigned long commretval;
mod_timer(&vub300->inactivity_timer, jiffies + HZ);
init_completion(&vub300->irqpoll_complete);
send_irqpoll(vub300);
@ -671,8 +671,6 @@ static void __do_poll(struct vub300_mmc_host *vub300)
vub300->usb_timed_out = 1;
usb_kill_urb(vub300->command_out_urb);
usb_kill_urb(vub300->command_res_urb);
} else if (commretval < 0) {
vub300_queue_poll_work(vub300, 1);
} else { /* commretval > 0 */
__vub300_irqpoll_response(vub300);
}

28
include/linux/mfd/tmio.h
View File

@ -95,11 +95,6 @@
*/
#define TMIO_MMC_SDIO_STATUS_QUIRK (1 << 8)
/*
* Some controllers have DMA enable/disable register
*/
#define TMIO_MMC_HAVE_CTL_DMA_REG (1 << 9)
/*
* Some controllers allows to set SDx actual clock
*/
@ -112,18 +107,6 @@ void tmio_core_mmc_clk_div(void __iomem *cnf, int shift, int state);
struct dma_chan;
struct tmio_mmc_dma {
void *chan_priv_tx;
void *chan_priv_rx;
int slave_id_tx;
int slave_id_rx;
int alignment_shift;
dma_addr_t dma_rx_offset;
bool (*filter)(struct dma_chan *chan, void *arg);
};
struct tmio_mmc_host;
/*
* data for the MMC controller
*/
@ -132,19 +115,12 @@ struct tmio_mmc_data {
unsigned long capabilities;
unsigned long capabilities2;
unsigned long flags;
unsigned long bus_shift;
u32 ocr_mask; /* available voltages */
struct tmio_mmc_dma *dma;
struct device *dev;
unsigned int cd_gpio;
int alignment_shift;
dma_addr_t dma_rx_offset;
void (*set_pwr)(struct platform_device *host, int state);
void (*set_clk_div)(struct platform_device *host, int state);
int (*write16_hook)(struct tmio_mmc_host *host, int addr);
/* clock management callbacks */
int (*clk_enable)(struct platform_device *pdev, unsigned int *f);
void (*clk_disable)(struct platform_device *pdev);
int (*multi_io_quirk)(struct mmc_card *card,
unsigned int direction, int blk_size);
};
/*

2
include/linux/mmc/card.h
View File

@ -83,7 +83,7 @@ struct mmc_ext_csd {
bool hpi; /* HPI support bit */
unsigned int hpi_cmd; /* cmd used as HPI */
bool bkops; /* background support bit */
bool bkops_en; /* background enable bit */
bool man_bkops_en; /* manual bkops enable bit */
unsigned int data_sector_size; /* 512 bytes or 4KB */
unsigned int data_tag_unit_size; /* DATA TAG UNIT size */
unsigned int boot_ro_lock; /* ro lock support */

1
include/linux/mmc/core.h
View File

@ -182,7 +182,6 @@ extern int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen);
extern int mmc_set_blockcount(struct mmc_card *card, unsigned int blockcount,
bool is_rel_write);
extern int mmc_hw_reset(struct mmc_host *host);
extern int mmc_hw_reset_check(struct mmc_host *host);
extern int mmc_can_reset(struct mmc_card *card);
extern void mmc_set_data_timeout(struct mmc_data *, const struct mmc_card *);

6
include/linux/mmc/dw_mmc.h
View File

@ -106,6 +106,11 @@ struct mmc_data;
* @cur_slot, @mrq and @state. These must always be updated
* at the same time while holding @lock.
*
* @irq_lock is an irq-safe spinlock protecting the INTMASK register
* to allow the interrupt handler to modify it directly. Held for only long
* enough to read-modify-write INTMASK and no other locks are grabbed when
* holding this one.
*
* The @mrq field of struct dw_mci_slot is also protected by @lock,
* and must always be written at the same time as the slot is added to
* @queue.
@ -125,6 +130,7 @@ struct mmc_data;
*/
struct dw_mci {
spinlock_t lock;
spinlock_t irq_lock;
void __iomem *regs;
struct scatterlist *sg;

4
include/linux/mmc/host.h
View File

@ -166,7 +166,6 @@ struct mmc_async_req {
* struct mmc_slot - MMC slot functions
*
* @cd_irq: MMC/SD-card slot hotplug detection IRQ or -EINVAL
* @lock: protect the @handler_priv pointer
* @handler_priv: MMC/SD-card slot context
*
* Some MMC/SD host controllers implement slot-functions like card and
@ -176,7 +175,6 @@ struct mmc_async_req {
*/
struct mmc_slot {
int cd_irq;
struct mutex lock;
void *handler_priv;
};
@ -197,6 +195,7 @@ struct mmc_context_info {
};
struct regulator;
struct mmc_pwrseq;
struct mmc_supply {
struct regulator *vmmc; /* Card power supply */
@ -208,6 +207,7 @@ struct mmc_host {
struct device class_dev;
int index;
const struct mmc_host_ops *ops;
struct mmc_pwrseq *pwrseq;
unsigned int f_min;
unsigned int f_max;
unsigned int f_init;

10
include/linux/mmc/mmc.h
View File

@ -53,11 +53,6 @@
#define MMC_SEND_TUNING_BLOCK 19 /* adtc R1 */
#define MMC_SEND_TUNING_BLOCK_HS200 21 /* adtc R1 */
#define MMC_TUNING_BLK_PATTERN_4BIT_SIZE 64
#define MMC_TUNING_BLK_PATTERN_8BIT_SIZE 128
extern const u8 tuning_blk_pattern_4bit[MMC_TUNING_BLK_PATTERN_4BIT_SIZE];
extern const u8 tuning_blk_pattern_8bit[MMC_TUNING_BLK_PATTERN_8BIT_SIZE];
/* class 3 */
#define MMC_WRITE_DAT_UNTIL_STOP 20 /* adtc [31:0] data addr R1 */
@ -432,6 +427,11 @@ struct _mmc_csd {
*/
#define EXT_CSD_BKOPS_LEVEL_2 0x2
/*
* BKOPS modes
*/
#define EXT_CSD_MANUAL_BKOPS_MASK 0x01
/*
* MMC_SWITCH access modes
*/

10
include/linux/mmc/sdhci.h
View File

@ -17,6 +17,11 @@
#include <linux/io.h>
#include <linux/mmc/host.h>
struct sdhci_host_next {
unsigned int sg_count;
s32 cookie;
};
struct sdhci_host {
/* Data set by hardware interface driver */
const char *hw_name; /* Hardware bus name */
@ -106,6 +111,10 @@ struct sdhci_host {
#define SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD (1<<10)
/* Capability register bit-63 indicates HS400 support */
#define SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 (1<<11)
/* forced tuned clock */
#define SDHCI_QUIRK2_TUNING_WORK_AROUND (1<<12)
/* disable the block count for single block transactions */
#define SDHCI_QUIRK2_SUPPORT_SINGLE (1<<13)
int irq; /* Device IRQ */
void __iomem *ioaddr; /* Mapped address */
@ -203,6 +212,7 @@ struct sdhci_host {
#define SDHCI_TUNING_MODE_1 0
struct timer_list tuning_timer; /* Timer for tuning */
struct sdhci_host_next next_data;
unsigned long private[0] ____cacheline_aligned;
};
#endif /* LINUX_MMC_SDHCI_H */

15
include/linux/mmc/sh_mobile_sdhi.h
View File

@ -3,20 +3,10 @@
#include <linux/types.h>
struct platform_device;
#define SH_MOBILE_SDHI_IRQ_CARD_DETECT "card_detect"
#define SH_MOBILE_SDHI_IRQ_SDCARD "sdcard"
#define SH_MOBILE_SDHI_IRQ_SDIO "sdio"
/**
* struct sh_mobile_sdhi_ops - SDHI driver callbacks
* @cd_wakeup: trigger a card-detection run
*/
struct sh_mobile_sdhi_ops {
void (*cd_wakeup)(const struct platform_device *pdev);
};
struct sh_mobile_sdhi_info {
int dma_slave_tx;
int dma_slave_rx;
@ -25,11 +15,6 @@ struct sh_mobile_sdhi_info {
unsigned long tmio_caps2;
u32 tmio_ocr_mask; /* available MMC voltages */
unsigned int cd_gpio;
/* callbacks for board specific setup code */
int (*init)(struct platform_device *pdev,
const struct sh_mobile_sdhi_ops *ops);
void (*cleanup)(struct platform_device *pdev);
};
#endif /* LINUX_MMC_SH_MOBILE_SDHI_H */

5
include/linux/mmc/slot-gpio.h
View File

@ -15,12 +15,10 @@ struct mmc_host;
int mmc_gpio_get_ro(struct mmc_host *host);
int mmc_gpio_request_ro(struct mmc_host *host, unsigned int gpio);
void mmc_gpio_free_ro(struct mmc_host *host);
int mmc_gpio_get_cd(struct mmc_host *host);
int mmc_gpio_request_cd(struct mmc_host *host, unsigned int gpio,
unsigned int debounce);
void mmc_gpio_free_cd(struct mmc_host *host);
int mmc_gpiod_request_cd(struct mmc_host *host, const char *con_id,
unsigned int idx, bool override_active_level,
@ -28,7 +26,8 @@ int mmc_gpiod_request_cd(struct mmc_host *host, const char *con_id,
int mmc_gpiod_request_ro(struct mmc_host *host, const char *con_id,
unsigned int idx, bool override_active_level,
unsigned int debounce, bool *gpio_invert);
void mmc_gpiod_free_cd(struct mmc_host *host);
void mmc_gpio_set_cd_isr(struct mmc_host *host,
irqreturn_t (*isr)(int irq, void *dev_id));
void mmc_gpiod_request_cd_irq(struct mmc_host *host);
#endif

4
include/linux/platform_data/mmc-omap.h
View File

@ -31,10 +31,6 @@ struct omap_mmc_platform_data {
void (*cleanup)(struct device *dev);
void (*shutdown)(struct device *dev);
/* To handle board related suspend/resume functionality for MMC */
int (*suspend)(struct device *dev, int slot);
int (*resume)(struct device *dev, int slot);
/* Return context loss count due to PM states changing */
int (*get_context_loss_count)(struct device *dev);