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Merge branch 'omap-for-v5.6/sdma' into omap-for-v5.6/ti-sysc-drop-pdata

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This commit is contained in:
Tony Lindgren 2019-12-30 10:17:51 -08:00
commit 9fc85a7124
26 changed files with 389 additions and 1160 deletions
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3
arch/arm/boot/dts/dra7-l4.dtsi
View File

@ -186,7 +186,6 @@
target-module@56000 { /* 0x4a056000, ap 9 02.0 */
compatible = "ti,sysc-omap2", "ti,sysc";
ti,hwmods = "dma_system";
reg = <0x56000 0x4>,
<0x5602c 0x4>,
<0x56028 0x4>;
@ -212,7 +211,7 @@
ranges = <0x0 0x56000 0x1000>;
sdma: dma-controller@0 {
compatible = "ti,omap4430-sdma";
compatible = "ti,omap4430-sdma", "ti,omap-sdma";
reg = <0x0 0x1000>;
interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>,

43
arch/arm/boot/dts/omap2.dtsi
View File

@ -8,6 +8,7 @@
* kind, whether express or implied.
*/
#include <dt-bindings/bus/ti-sysc.h>
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/pinctrl/omap.h>
@ -79,17 +80,37 @@
reg = <0x480FE000 0x1000>;
};
sdma: dma-controller@48056000 {
compatible = "ti,omap2430-sdma", "ti,omap2420-sdma";
ti,hwmods = "dma";
reg = <0x48056000 0x1000>;
interrupts = <12>,
<13>,
<14>,
<15>;
#dma-cells = <1>;
dma-channels = <32>;
dma-requests = <64>;
target-module@48056000 {
compatible = "ti,sysc-omap2", "ti,sysc";
reg = <0x48056000 0x4>,
<0x4805602c 0x4>,
<0x48056028 0x4>;
reg-names = "rev", "sysc", "syss";
ti,sysc-mask = <(SYSC_OMAP2_CLOCKACTIVITY |
SYSC_OMAP2_EMUFREE |
SYSC_OMAP2_SOFTRESET |
SYSC_OMAP2_AUTOIDLE)>;
ti,sysc-midle = <SYSC_IDLE_FORCE>,
<SYSC_IDLE_NO>,
<SYSC_IDLE_SMART>;
ti,syss-mask = <1>;
clocks = <&core_l3_ck>;
clock-names = "fck";
#address-cells = <1>;
#size-cells = <1>;
ranges = <0 0x48056000 0x1000>;
sdma: dma-controller@0 {
compatible = "ti,omap2420-sdma", "ti,omap-sdma";
reg = <0 0x1000>;
interrupts = <12>,
<13>,
<14>,
<15>;
#dma-cells = <1>;
dma-channels = <32>;
dma-requests = <64>;
};
};
i2c1: i2c@48070000 {

4
arch/arm/boot/dts/omap2430.dtsi
View File

@ -309,6 +309,10 @@
};
};
&sdma {
compatible = "ti,omap2430-sdma", "ti,omap-sdma";
};
&i2c1 {
compatible = "ti,omap2430-i2c";
};

5
arch/arm/boot/dts/omap3-n900.dts
View File

@ -482,6 +482,11 @@
regulator-always-on;
};
/* First two dma channels are reserved on secure omap3 */
&sdma {
dma-channel-mask = <0xfffffffc>;
};
&twl {
twl_audio: audio {
compatible = "ti,twl4030-audio";

46
arch/arm/boot/dts/omap3.dtsi
View File

@ -206,17 +206,41 @@
reg = <0x48200000 0x1000>;
};
sdma: dma-controller@48056000 {
compatible = "ti,omap3630-sdma", "ti,omap3430-sdma";
reg = <0x48056000 0x1000>;
interrupts = <12>,
<13>,
<14>,
<15>;
#dma-cells = <1>;
dma-channels = <32>;
dma-requests = <96>;
ti,hwmods = "dma";
target-module@48056000 {
compatible = "ti,sysc-omap2", "ti,sysc";
reg = <0x48056000 0x4>,
<0x4805602c 0x4>,
<0x48056028 0x4>;
reg-names = "rev", "sysc", "syss";
ti,sysc-mask = <(SYSC_OMAP2_CLOCKACTIVITY |
SYSC_OMAP2_EMUFREE |
SYSC_OMAP2_SOFTRESET |
SYSC_OMAP2_AUTOIDLE)>;
ti,sysc-midle = <SYSC_IDLE_FORCE>,
<SYSC_IDLE_NO>,
<SYSC_IDLE_SMART>;
ti,sysc-sidle = <SYSC_IDLE_FORCE>,
<SYSC_IDLE_NO>,
<SYSC_IDLE_SMART>;
ti,syss-mask = <1>;
/* Domains (V, P, C): core, core_pwrdm, core_l3_clkdm */
clocks = <&core_l3_ick>;
clock-names = "ick";
#address-cells = <1>;
#size-cells = <1>;
ranges = <0 0x48056000 0x1000>;
sdma: dma-controller@0 {
compatible = "ti,omap3430-sdma", "ti,omap-sdma";
reg = <0x0 0x1000>;
interrupts = <12>,
<13>,
<14>,
<15>;
#dma-cells = <1>;
dma-channels = <32>;
dma-requests = <96>;
};
};
gpio1: gpio@48310000 {

4
arch/arm/boot/dts/omap36xx.dtsi
View File

@ -223,6 +223,10 @@
};
};
&sdma {
compatible = "ti,omap3630-sdma", "ti,omap-sdma";
};
/* OMAP3630 needs dss_96m_fck for VENC */
&venc {
clocks = <&dss_tv_fck>, <&dss_96m_fck>;

3
arch/arm/boot/dts/omap4-l4.dtsi
View File

@ -136,7 +136,6 @@
target-module@56000 { /* 0x4a056000, ap 7 0a.0 */
compatible = "ti,sysc-omap2", "ti,sysc";
ti,hwmods = "dma_system";
reg = <0x56000 0x4>,
<0x5602c 0x4>,
<0x56028 0x4>;
@ -160,7 +159,7 @@
ranges = <0x0 0x56000 0x1000>;
sdma: dma-controller@0 {
compatible = "ti,omap4430-sdma";
compatible = "ti,omap4430-sdma", "ti,omap-sdma";
reg = <0x0 0x1000>;
interrupts = <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>,

3
arch/arm/boot/dts/omap5-l4.dtsi
View File

@ -213,7 +213,6 @@
target-module@56000 { /* 0x4a056000, ap 7 02.0 */
compatible = "ti,sysc-omap2", "ti,sysc";
ti,hwmods = "dma_system";
reg = <0x56000 0x4>,
<0x5602c 0x4>,
<0x56028 0x4>;
@ -237,7 +236,7 @@
ranges = <0x0 0x56000 0x1000>;
sdma: dma-controller@0 {
compatible = "ti,omap4430-sdma";
compatible = "ti,omap4430-sdma", "ti,omap-sdma";
reg = <0x0 0x1000>;
interrupts = <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>,

3
arch/arm/mach-omap2/common.h
View File

@ -345,9 +345,12 @@ static inline int dra7xx_pciess_reset(struct omap_hwmod *oh)
}
#endif
struct omap_system_dma_plat_info;
void pdata_quirks_init(const struct of_device_id *);
void omap_auxdata_legacy_init(struct device *dev);
void omap_pcs_legacy_init(int irq, void (*rearm)(void));
extern struct omap_system_dma_plat_info dma_plat_info;
struct omap_sdrc_params;
extern void omap_sdrc_init(struct omap_sdrc_params *sdrc_cs0,

119
arch/arm/mach-omap2/dma.c
View File

@ -30,10 +30,6 @@
#include <linux/omap-dma.h>
#include "soc.h"
#include "omap_hwmod.h"
#include "omap_device.h"
static enum omap_reg_offsets dma_common_ch_end;
static const struct omap_dma_reg reg_map[] = {
[REVISION] = { 0x0000, 0x00, OMAP_DMA_REG_32BIT },
@ -81,42 +77,6 @@ static const struct omap_dma_reg reg_map[] = {
[CCDN] = { 0x00d8, 0x60, OMAP_DMA_REG_32BIT },
};
static void __iomem *dma_base;
static inline void dma_write(u32 val, int reg, int lch)
{
void __iomem *addr = dma_base;
addr += reg_map[reg].offset;
addr += reg_map[reg].stride * lch;
writel_relaxed(val, addr);
}
static inline u32 dma_read(int reg, int lch)
{
void __iomem *addr = dma_base;
addr += reg_map[reg].offset;
addr += reg_map[reg].stride * lch;
return readl_relaxed(addr);
}
static void omap2_clear_dma(int lch)
{
int i;
for (i = CSDP; i <= dma_common_ch_end; i += 1)
dma_write(0, i, lch);
}
static void omap2_show_dma_caps(void)
{
u8 revision = dma_read(REVISION, 0) & 0xff;
printk(KERN_INFO "OMAP DMA hardware revision %d.%d\n",
revision >> 4, revision & 0xf);
}
static unsigned configure_dma_errata(void)
{
unsigned errata = 0;
@ -211,82 +171,35 @@ static const struct dma_slave_map omap24xx_sdma_dt_map[] = {
{ "musb-hdrc.1.auto", "dmareq5", SDMA_FILTER_PARAM(64) }, /* OMAP2420 only */
};
static struct omap_system_dma_plat_info dma_plat_info __initdata = {
.reg_map = reg_map,
.channel_stride = 0x60,
.show_dma_caps = omap2_show_dma_caps,
.clear_dma = omap2_clear_dma,
.dma_write = dma_write,
.dma_read = dma_read,
static struct omap_dma_dev_attr dma_attr = {
.dev_caps = RESERVE_CHANNEL | DMA_LINKED_LCH | GLOBAL_PRIORITY |
IS_CSSA_32 | IS_CDSA_32,
.lch_count = 32,
};
static struct platform_device_info omap_dma_dev_info __initdata = {
.name = "omap-dma-engine",
.id = -1,
.dma_mask = DMA_BIT_MASK(32),
struct omap_system_dma_plat_info dma_plat_info = {
.reg_map = reg_map,
.channel_stride = 0x60,
.dma_attr = &dma_attr,
};
/* One time initializations */
static int __init omap2_system_dma_init_dev(struct omap_hwmod *oh, void *unused)
static int __init omap2_system_dma_init(void)
{
struct platform_device *pdev;
struct omap_system_dma_plat_info p;
struct omap_dma_dev_attr *d;
struct resource *mem;
char *name = "omap_dma_system";
p = dma_plat_info;
p.dma_attr = (struct omap_dma_dev_attr *)oh->dev_attr;
p.errata = configure_dma_errata();
dma_plat_info.errata = configure_dma_errata();
if (soc_is_omap24xx()) {
/* DMA slave map for drivers not yet converted to DT */
p.slave_map = omap24xx_sdma_dt_map;
p.slavecnt = ARRAY_SIZE(omap24xx_sdma_dt_map);
dma_plat_info.slave_map = omap24xx_sdma_dt_map;
dma_plat_info.slavecnt = ARRAY_SIZE(omap24xx_sdma_dt_map);
}
pdev = omap_device_build(name, 0, oh, &p, sizeof(p));
if (IS_ERR(pdev)) {
pr_err("%s: Can't build omap_device for %s:%s.\n",
__func__, name, oh->name);
return PTR_ERR(pdev);
}
if (!soc_is_omap242x())
dma_attr.dev_caps |= IS_RW_PRIORITY;
omap_dma_dev_info.res = pdev->resource;
omap_dma_dev_info.num_res = pdev->num_resources;
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!mem) {
dev_err(&pdev->dev, "%s: no mem resource\n", __func__);
return -EINVAL;
}
dma_base = ioremap(mem->start, resource_size(mem));
if (!dma_base) {
dev_err(&pdev->dev, "%s: ioremap fail\n", __func__);
return -ENOMEM;
}
d = oh->dev_attr;
if (cpu_is_omap34xx() && (omap_type() != OMAP2_DEVICE_TYPE_GP))
d->dev_caps |= HS_CHANNELS_RESERVED;
if (platform_get_irq_byname(pdev, "0") < 0)
d->dev_caps |= DMA_ENGINE_HANDLE_IRQ;
/* Check the capabilities register for descriptor loading feature */
if (dma_read(CAPS_0, 0) & DMA_HAS_DESCRIPTOR_CAPS)
dma_common_ch_end = CCDN;
else
dma_common_ch_end = CCFN;
if (soc_is_omap34xx() && (omap_type() != OMAP2_DEVICE_TYPE_GP))
dma_attr.dev_caps |= HS_CHANNELS_RESERVED;
return 0;
}
static int __init omap2_system_dma_init(void)
{
return omap_hwmod_for_each_by_class("dma",
omap2_system_dma_init_dev, NULL);
}
omap_arch_initcall(omap2_system_dma_init);

170
arch/arm/mach-omap2/omap_device.c
View File

@ -373,176 +373,6 @@ void omap_device_delete(struct omap_device *od)
kfree(od);
}
/**
* omap_device_copy_resources - Add legacy IO and IRQ resources
* @oh: interconnect target module
* @pdev: platform device to copy resources to
*
* We still have legacy DMA and smartreflex needing resources.
* Let's populate what they need until we can eventually just
* remove this function. Note that there should be no need to
* call this from omap_device_build_from_dt(), nor should there
* be any need to call it for other devices.
*/
static int
omap_device_copy_resources(struct omap_hwmod *oh,
struct platform_device *pdev)
{
struct device_node *np, *child;
struct property *prop;
struct resource *res;
const char *name;
int error, irq = 0;
if (!oh || !oh->od || !oh->od->pdev)
return -EINVAL;
np = oh->od->pdev->dev.of_node;
if (!np) {
error = -ENODEV;
goto error;
}
res = kcalloc(2, sizeof(*res), GFP_KERNEL);
if (!res)
return -ENOMEM;
/* Do we have a dts range for the interconnect target module? */
error = omap_hwmod_parse_module_range(oh, np, res);
/* No ranges, rely on device reg entry */
if (error)
error = of_address_to_resource(np, 0, res);
if (error)
goto free;
/* SmartReflex needs first IO resource name to be "mpu" */
res[0].name = "mpu";
/*
* We may have a configured "ti,sysc" interconnect target with a
* dts child with the interrupt. If so use the first child's
* first interrupt for "ti-hwmods" legacy support.
*/
of_property_for_each_string(np, "compatible", prop, name)
if (!strncmp("ti,sysc-", name, 8))
break;
child = of_get_next_available_child(np, NULL);
if (name)
irq = irq_of_parse_and_map(child, 0);
if (!irq)
irq = irq_of_parse_and_map(np, 0);
if (!irq) {
error = -EINVAL;
goto free;
}
/* Legacy DMA code needs interrupt name to be "0" */
res[1].start = irq;
res[1].end = irq;
res[1].flags = IORESOURCE_IRQ;
res[1].name = "0";
error = platform_device_add_resources(pdev, res, 2);
free:
kfree(res);
error:
WARN(error, "%s: %s device %s failed: %i\n",
__func__, oh->name, dev_name(&pdev->dev),
error);
return error;
}
/**
* omap_device_build - build and register an omap_device with one omap_hwmod
* @pdev_name: name of the platform_device driver to use
* @pdev_id: this platform_device's connection ID
* @oh: ptr to the single omap_hwmod that backs this omap_device
* @pdata: platform_data ptr to associate with the platform_device
* @pdata_len: amount of memory pointed to by @pdata
*
* Convenience function for building and registering a single
* omap_device record, which in turn builds and registers a
* platform_device record. See omap_device_build_ss() for more
* information. Returns ERR_PTR(-EINVAL) if @oh is NULL; otherwise,
* passes along the return value of omap_device_build_ss().
*/
struct platform_device __init *omap_device_build(const char *pdev_name,
int pdev_id,
struct omap_hwmod *oh,
void *pdata, int pdata_len)
{
int ret = -ENOMEM;
struct platform_device *pdev;
struct omap_device *od;
if (!oh || !pdev_name)
return ERR_PTR(-EINVAL);
if (!pdata && pdata_len > 0)
return ERR_PTR(-EINVAL);
if (strncmp(oh->name, "smartreflex", 11) &&
strncmp(oh->name, "dma", 3)) {
pr_warn("%s need to update %s to probe with dt\na",
__func__, pdev_name);
ret = -ENODEV;
goto odbs_exit;
}
pdev = platform_device_alloc(pdev_name, pdev_id);
if (!pdev) {
ret = -ENOMEM;
goto odbs_exit;
}
/* Set the dev_name early to allow dev_xxx in omap_device_alloc */
if (pdev->id != -1)
dev_set_name(&pdev->dev, "%s.%d", pdev->name, pdev->id);
else
dev_set_name(&pdev->dev, "%s", pdev->name);
/*
* Must be called before omap_device_alloc() as oh->od
* only contains the currently registered omap_device
* and will get overwritten by omap_device_alloc().
*/
ret = omap_device_copy_resources(oh, pdev);
if (ret)
goto odbs_exit1;
od = omap_device_alloc(pdev, &oh, 1);
if (IS_ERR(od)) {
ret = PTR_ERR(od);
goto odbs_exit1;
}
ret = platform_device_add_data(pdev, pdata, pdata_len);
if (ret)
goto odbs_exit2;
ret = omap_device_register(pdev);
if (ret)
goto odbs_exit2;
return pdev;
odbs_exit2:
omap_device_delete(od);
odbs_exit1:
platform_device_put(pdev);
odbs_exit:
pr_err("omap_device: %s: build failed (%d)\n", pdev_name, ret);
return ERR_PTR(ret);
}
#ifdef CONFIG_PM
static int _od_runtime_suspend(struct device *dev)
{

4
arch/arm/mach-omap2/omap_device.h
View File

@ -68,10 +68,6 @@ int omap_device_idle(struct platform_device *pdev);
/* Core code interface */
struct platform_device *omap_device_build(const char *pdev_name, int pdev_id,
struct omap_hwmod *oh, void *pdata,
int pdata_len);
struct omap_device *omap_device_alloc(struct platform_device *pdev,
struct omap_hwmod **ohs, int oh_cnt);
void omap_device_delete(struct omap_device *od);

34
arch/arm/mach-omap2/omap_hwmod_2420_data.c
View File

@ -11,7 +11,6 @@
*/
#include <linux/platform_data/i2c-omap.h>
#include <linux/omap-dma.h>
#include "omap_hwmod.h"
#include "l3_2xxx.h"
@ -126,21 +125,6 @@ static struct omap_hwmod omap2420_i2c2_hwmod = {
.flags = HWMOD_16BIT_REG,
};
/* dma attributes */
static struct omap_dma_dev_attr dma_dev_attr = {
.dev_caps = RESERVE_CHANNEL | DMA_LINKED_LCH | GLOBAL_PRIORITY |
IS_CSSA_32 | IS_CDSA_32,
.lch_count = 32,
};
static struct omap_hwmod omap2420_dma_system_hwmod = {
.name = "dma",
.class = &omap2xxx_dma_hwmod_class,
.main_clk = "core_l3_ck",
.dev_attr = &dma_dev_attr,
.flags = HWMOD_NO_IDLEST,
};
/* mailbox */
static struct omap_hwmod omap2420_mailbox_hwmod = {
.name = "mailbox",
@ -328,22 +312,6 @@ static struct omap_hwmod_ocp_if omap2420_l4_wkup__gpio4 = {
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* dma_system -> L3 */
static struct omap_hwmod_ocp_if omap2420_dma_system__l3 = {
.master = &omap2420_dma_system_hwmod,
.slave = &omap2xxx_l3_main_hwmod,
.clk = "core_l3_ck",
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* l4_core -> dma_system */
static struct omap_hwmod_ocp_if omap2420_l4_core__dma_system = {
.master = &omap2xxx_l4_core_hwmod,
.slave = &omap2420_dma_system_hwmod,
.clk = "sdma_ick",
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* l4_core -> mailbox */
static struct omap_hwmod_ocp_if omap2420_l4_core__mailbox = {
.master = &omap2xxx_l4_core_hwmod,
@ -435,8 +403,6 @@ static struct omap_hwmod_ocp_if *omap2420_hwmod_ocp_ifs[] __initdata = {
&omap2420_l4_wkup__gpio2,
&omap2420_l4_wkup__gpio3,
&omap2420_l4_wkup__gpio4,
&omap2420_dma_system__l3,
&omap2420_l4_core__dma_system,
&omap2420_l4_core__mailbox,
&omap2420_l4_core__mcbsp1,
&omap2420_l4_core__mcbsp2,

34
arch/arm/mach-omap2/omap_hwmod_2430_data.c
View File

@ -12,7 +12,6 @@
#include <linux/platform_data/i2c-omap.h>
#include <linux/platform_data/hsmmc-omap.h>
#include <linux/omap-dma.h>
#include "omap_hwmod.h"
#include "l3_2xxx.h"
@ -121,21 +120,6 @@ static struct omap_hwmod omap2430_gpio5_hwmod = {
.class = &omap2xxx_gpio_hwmod_class,
};
/* dma attributes */
static struct omap_dma_dev_attr dma_dev_attr = {
.dev_caps = RESERVE_CHANNEL | DMA_LINKED_LCH | GLOBAL_PRIORITY |
IS_CSSA_32 | IS_CDSA_32 | IS_RW_PRIORITY,
.lch_count = 32,
};
static struct omap_hwmod omap2430_dma_system_hwmod = {
.name = "dma",
.class = &omap2xxx_dma_hwmod_class,
.main_clk = "core_l3_ck",
.dev_attr = &dma_dev_attr,
.flags = HWMOD_NO_IDLEST,
};
/* mailbox */
static struct omap_hwmod omap2430_mailbox_hwmod = {
.name = "mailbox",
@ -508,22 +492,6 @@ static struct omap_hwmod_ocp_if omap2430_l4_core__gpio5 = {
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* dma_system -> L3 */
static struct omap_hwmod_ocp_if omap2430_dma_system__l3 = {
.master = &omap2430_dma_system_hwmod,
.slave = &omap2xxx_l3_main_hwmod,
.clk = "core_l3_ck",
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* l4_core -> dma_system */
static struct omap_hwmod_ocp_if omap2430_l4_core__dma_system = {
.master = &omap2xxx_l4_core_hwmod,
.slave = &omap2430_dma_system_hwmod,
.clk = "sdma_ick",
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* l4_core -> mailbox */
static struct omap_hwmod_ocp_if omap2430_l4_core__mailbox = {
.master = &omap2xxx_l4_core_hwmod,
@ -635,8 +603,6 @@ static struct omap_hwmod_ocp_if *omap2430_hwmod_ocp_ifs[] __initdata = {
&omap2430_l4_wkup__gpio3,
&omap2430_l4_wkup__gpio4,
&omap2430_l4_core__gpio5,
&omap2430_dma_system__l3,
&omap2430_l4_core__dma_system,
&omap2430_l4_core__mailbox,
&omap2430_l4_core__mcbsp1,
&omap2430_l4_core__mcbsp2,

18
arch/arm/mach-omap2/omap_hwmod_2xxx_ipblock_data.c
View File

@ -7,7 +7,6 @@
*/
#include <linux/types.h>
#include <linux/omap-dma.h>
#include "omap_hwmod.h"
#include "omap_hwmod_common_data.h"
@ -95,23 +94,6 @@ struct omap_hwmod_class omap2xxx_gpio_hwmod_class = {
.sysc = &omap2xxx_gpio_sysc,
};
/* system dma */
static struct omap_hwmod_class_sysconfig omap2xxx_dma_sysc = {
.rev_offs = 0x0000,
.sysc_offs = 0x002c,
.syss_offs = 0x0028,
.sysc_flags = (SYSC_HAS_SOFTRESET | SYSC_HAS_MIDLEMODE |
SYSC_HAS_CLOCKACTIVITY | SYSC_HAS_EMUFREE |
SYSC_HAS_AUTOIDLE | SYSS_HAS_RESET_STATUS),
.idlemodes = (MSTANDBY_FORCE | MSTANDBY_NO | MSTANDBY_SMART),
.sysc_fields = &omap_hwmod_sysc_type1,
};
struct omap_hwmod_class omap2xxx_dma_hwmod_class = {
.name = "dma",
.sysc = &omap2xxx_dma_sysc,
};
/*
* 'mailbox' class
* mailbox module allowing communication between the on-chip processors

61
arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
View File

@ -16,7 +16,6 @@
#include <linux/power/smartreflex.h>
#include <linux/platform_data/hsmmc-omap.h>
#include <linux/omap-dma.h>
#include "l3_3xxx.h"
#include "l4_3xxx.h"
@ -833,47 +832,6 @@ static struct omap_hwmod omap3xxx_gpio6_hwmod = {
.class = &omap3xxx_gpio_hwmod_class,
};
/* dma attributes */
static struct omap_dma_dev_attr dma_dev_attr = {
.dev_caps = RESERVE_CHANNEL | DMA_LINKED_LCH | GLOBAL_PRIORITY |
IS_CSSA_32 | IS_CDSA_32 | IS_RW_PRIORITY,
.lch_count = 32,
};
static struct omap_hwmod_class_sysconfig omap3xxx_dma_sysc = {
.rev_offs = 0x0000,
.sysc_offs = 0x002c,
.syss_offs = 0x0028,
.sysc_flags = (SYSC_HAS_SIDLEMODE | SYSC_HAS_SOFTRESET |
SYSC_HAS_MIDLEMODE | SYSC_HAS_CLOCKACTIVITY |
SYSC_HAS_EMUFREE | SYSC_HAS_AUTOIDLE |
SYSS_HAS_RESET_STATUS),
.idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
MSTANDBY_FORCE | MSTANDBY_NO | MSTANDBY_SMART),
.sysc_fields = &omap_hwmod_sysc_type1,
};
static struct omap_hwmod_class omap3xxx_dma_hwmod_class = {
.name = "dma",
.sysc = &omap3xxx_dma_sysc,
};
/* dma_system */
static struct omap_hwmod omap3xxx_dma_system_hwmod = {
.name = "dma",
.class = &omap3xxx_dma_hwmod_class,
.main_clk = "core_l3_ick",
.prcm = {
.omap2 = {
.module_offs = CORE_MOD,
.idlest_reg_id = 1,
.idlest_idle_bit = OMAP3430_ST_SDMA_SHIFT,
},
},
.dev_attr = &dma_dev_attr,
.flags = HWMOD_NO_IDLEST,
};
/*
* 'mcbsp' class
* multi channel buffered serial port controller
@ -2233,23 +2191,6 @@ static struct omap_hwmod_ocp_if omap3xxx_l4_per__gpio6 = {
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* dma_system -> L3 */
static struct omap_hwmod_ocp_if omap3xxx_dma_system__l3 = {
.master = &omap3xxx_dma_system_hwmod,
.slave = &omap3xxx_l3_main_hwmod,
.clk = "core_l3_ick",
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* l4_cfg -> dma_system */
static struct omap_hwmod_ocp_if omap3xxx_l4_core__dma_system = {
.master = &omap3xxx_l4_core_hwmod,
.slave = &omap3xxx_dma_system_hwmod,
.clk = "core_l4_ick",
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* l4_core -> mcbsp1 */
static struct omap_hwmod_ocp_if omap3xxx_l4_core__mcbsp1 = {
.master = &omap3xxx_l4_core_hwmod,
@ -2628,8 +2569,6 @@ static struct omap_hwmod_ocp_if *omap3xxx_hwmod_ocp_ifs[] __initdata = {
&omap3xxx_l4_per__gpio4,
&omap3xxx_l4_per__gpio5,
&omap3xxx_l4_per__gpio6,
&omap3xxx_dma_system__l3,
&omap3xxx_l4_core__dma_system,
&omap3xxx_l4_core__mcbsp1,
&omap3xxx_l4_per__mcbsp2,
&omap3xxx_l4_per__mcbsp3,

69
arch/arm/mach-omap2/omap_hwmod_44xx_data.c
View File

@ -18,7 +18,6 @@
*/
#include <linux/io.h>
#include <linux/omap-dma.h>
#include "omap_hwmod.h"
#include "omap_hwmod_common_data.h"
@ -30,9 +29,6 @@
/* Base offset for all OMAP4 interrupts external to MPUSS */
#define OMAP44XX_IRQ_GIC_START 32
/* Base offset for all OMAP4 dma requests */
#define OMAP44XX_DMA_REQ_START 1
/*
* IP blocks
*/
@ -359,53 +355,6 @@ static struct omap_hwmod omap44xx_debugss_hwmod = {
},
};
/*
* 'dma' class
* dma controller for data exchange between memory to memory (i.e. internal or
* external memory) and gp peripherals to memory or memory to gp peripherals
*/
static struct omap_hwmod_class_sysconfig omap44xx_dma_sysc = {
.rev_offs = 0x0000,
.sysc_offs = 0x002c,
.syss_offs = 0x0028,
.sysc_flags = (SYSC_HAS_AUTOIDLE | SYSC_HAS_CLOCKACTIVITY |
SYSC_HAS_EMUFREE | SYSC_HAS_MIDLEMODE |
SYSC_HAS_SIDLEMODE | SYSC_HAS_SOFTRESET |
SYSS_HAS_RESET_STATUS),
.idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
MSTANDBY_FORCE | MSTANDBY_NO | MSTANDBY_SMART),
.sysc_fields = &omap_hwmod_sysc_type1,
};
static struct omap_hwmod_class omap44xx_dma_hwmod_class = {
.name = "dma",
.sysc = &omap44xx_dma_sysc,
};
/* dma dev_attr */
static struct omap_dma_dev_attr dma_dev_attr = {
.dev_caps = RESERVE_CHANNEL | DMA_LINKED_LCH | GLOBAL_PRIORITY |
IS_CSSA_32 | IS_CDSA_32 | IS_RW_PRIORITY,
.lch_count = 32,
};
/* dma_system */
static struct omap_hwmod omap44xx_dma_system_hwmod = {
.name = "dma_system",
.class = &omap44xx_dma_hwmod_class,
.clkdm_name = "l3_dma_clkdm",
.main_clk = "l3_div_ck",
.prcm = {
.omap4 = {
.clkctrl_offs = OMAP4_CM_SDMA_SDMA_CLKCTRL_OFFSET,
.context_offs = OMAP4_RM_SDMA_SDMA_CONTEXT_OFFSET,
},
},
.dev_attr = &dma_dev_attr,
};
/*
* 'dsp' class
* dsp sub-system
@ -1458,14 +1407,6 @@ static struct omap_hwmod_ocp_if omap44xx_debugss__l3_main_2 = {
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* dma_system -> l3_main_2 */
static struct omap_hwmod_ocp_if omap44xx_dma_system__l3_main_2 = {
.master = &omap44xx_dma_system_hwmod,
.slave = &omap44xx_l3_main_2_hwmod,
.clk = "l3_div_ck",
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* ipu -> l3_main_2 */
static struct omap_hwmod_ocp_if omap44xx_ipu__l3_main_2 = {
.master = &omap44xx_ipu_hwmod,
@ -1658,14 +1599,6 @@ static struct omap_hwmod_ocp_if omap44xx_l3_instr__debugss = {
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* l4_cfg -> dma_system */
static struct omap_hwmod_ocp_if omap44xx_l4_cfg__dma_system = {
.master = &omap44xx_l4_cfg_hwmod,
.slave = &omap44xx_dma_system_hwmod,
.clk = "l4_div_ck",
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* dsp -> iva */
static struct omap_hwmod_ocp_if omap44xx_dsp__iva = {
.master = &omap44xx_dsp_hwmod,
@ -1966,7 +1899,6 @@ static struct omap_hwmod_ocp_if *omap44xx_hwmod_ocp_ifs[] __initdata = {
&omap44xx_l4_cfg__l3_main_1,
&omap44xx_mpu__l3_main_1,
&omap44xx_debugss__l3_main_2,
&omap44xx_dma_system__l3_main_2,
&omap44xx_ipu__l3_main_2,
&omap44xx_iss__l3_main_2,
&omap44xx_iva__l3_main_2,
@ -1991,7 +1923,6 @@ static struct omap_hwmod_ocp_if *omap44xx_hwmod_ocp_ifs[] __initdata = {
&omap44xx_l4_wkup__ctrl_module_wkup,
&omap44xx_l4_wkup__ctrl_module_pad_wkup,
&omap44xx_l3_instr__debugss,
&omap44xx_l4_cfg__dma_system,
&omap44xx_dsp__iva,
/* &omap44xx_dsp__sl2if, */
&omap44xx_l4_cfg__dsp,

62
arch/arm/mach-omap2/omap_hwmod_54xx_data.c
View File

@ -17,8 +17,6 @@
#include <linux/io.h>
#include <linux/power/smartreflex.h>
#include <linux/omap-dma.h>
#include "omap_hwmod.h"
#include "omap_hwmod_common_data.h"
#include "cm1_54xx.h"
@ -28,10 +26,6 @@
/* Base offset for all OMAP5 interrupts external to MPUSS */
#define OMAP54XX_IRQ_GIC_START 32
/* Base offset for all OMAP5 dma requests */
#define OMAP54XX_DMA_REQ_START 1
/*
* IP blocks
*/
@ -232,53 +226,6 @@ static struct omap_hwmod omap54xx_counter_32k_hwmod = {
},
};
/*
* 'dma' class
* dma controller for data exchange between memory to memory (i.e. internal or
* external memory) and gp peripherals to memory or memory to gp peripherals
*/
static struct omap_hwmod_class_sysconfig omap54xx_dma_sysc = {
.rev_offs = 0x0000,
.sysc_offs = 0x002c,
.syss_offs = 0x0028,
.sysc_flags = (SYSC_HAS_AUTOIDLE | SYSC_HAS_CLOCKACTIVITY |
SYSC_HAS_EMUFREE | SYSC_HAS_MIDLEMODE |
SYSC_HAS_SIDLEMODE | SYSC_HAS_SOFTRESET |
SYSS_HAS_RESET_STATUS),
.idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
MSTANDBY_FORCE | MSTANDBY_NO | MSTANDBY_SMART),
.sysc_fields = &omap_hwmod_sysc_type1,
};
static struct omap_hwmod_class omap54xx_dma_hwmod_class = {
.name = "dma",
.sysc = &omap54xx_dma_sysc,
};
/* dma dev_attr */
static struct omap_dma_dev_attr dma_dev_attr = {
.dev_caps = RESERVE_CHANNEL | DMA_LINKED_LCH | GLOBAL_PRIORITY |
IS_CSSA_32 | IS_CDSA_32 | IS_RW_PRIORITY,
.lch_count = 32,
};
/* dma_system */
static struct omap_hwmod omap54xx_dma_system_hwmod = {
.name = "dma_system",
.class = &omap54xx_dma_hwmod_class,
.clkdm_name = "dma_clkdm",
.main_clk = "l3_iclk_div",
.prcm = {
.omap4 = {
.clkctrl_offs = OMAP54XX_CM_DMA_DMA_SYSTEM_CLKCTRL_OFFSET,
.context_offs = OMAP54XX_RM_DMA_DMA_SYSTEM_CONTEXT_OFFSET,
},
},
.dev_attr = &dma_dev_attr,
};
/*
* 'dss' class
* display sub-system
@ -961,14 +908,6 @@ static struct omap_hwmod_ocp_if omap54xx_l4_wkup__counter_32k = {
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* l4_cfg -> dma_system */
static struct omap_hwmod_ocp_if omap54xx_l4_cfg__dma_system = {
.master = &omap54xx_l4_cfg_hwmod,
.slave = &omap54xx_dma_system_hwmod,
.clk = "l4_root_clk_div",
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* l3_main_2 -> dss */
static struct omap_hwmod_ocp_if omap54xx_l3_main_2__dss = {
.master = &omap54xx_l3_main_2_hwmod,
@ -1091,7 +1030,6 @@ static struct omap_hwmod_ocp_if *omap54xx_hwmod_ocp_ifs[] __initdata = {
&omap54xx_l3_main_1__l4_wkup,
&omap54xx_mpu__mpu_private,
&omap54xx_l4_wkup__counter_32k,
&omap54xx_l4_cfg__dma_system,
&omap54xx_l3_main_2__dss,
&omap54xx_l3_main_2__dss_dispc,
&omap54xx_l3_main_2__dss_dsi1_a,

60
arch/arm/mach-omap2/omap_hwmod_7xx_data.c
View File

@ -15,7 +15,6 @@
*/
#include <linux/io.h>
#include <linux/omap-dma.h>
#include "omap_hwmod.h"
#include "omap_hwmod_common_data.h"
@ -27,10 +26,6 @@
/* Base offset for all DRA7XX interrupts external to MPUSS */
#define DRA7XX_IRQ_GIC_START 32
/* Base offset for all DRA7XX dma requests */
#define DRA7XX_DMA_REQ_START 1
/*
* IP blocks
*/
@ -281,52 +276,6 @@ static struct omap_hwmod dra7xx_ctrl_module_wkup_hwmod = {
},
};
/*
* 'dma' class
*
*/
static struct omap_hwmod_class_sysconfig dra7xx_dma_sysc = {
.rev_offs = 0x0000,
.sysc_offs = 0x002c,
.syss_offs = 0x0028,
.sysc_flags = (SYSC_HAS_AUTOIDLE | SYSC_HAS_CLOCKACTIVITY |
SYSC_HAS_EMUFREE | SYSC_HAS_MIDLEMODE |
SYSC_HAS_SIDLEMODE | SYSC_HAS_SOFTRESET |
SYSS_HAS_RESET_STATUS),
.idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
SIDLE_SMART_WKUP | MSTANDBY_FORCE | MSTANDBY_NO |
MSTANDBY_SMART | MSTANDBY_SMART_WKUP),
.sysc_fields = &omap_hwmod_sysc_type1,
};
static struct omap_hwmod_class dra7xx_dma_hwmod_class = {
.name = "dma",
.sysc = &dra7xx_dma_sysc,
};
/* dma dev_attr */
static struct omap_dma_dev_attr dma_dev_attr = {
.dev_caps = RESERVE_CHANNEL | DMA_LINKED_LCH | GLOBAL_PRIORITY |
IS_CSSA_32 | IS_CDSA_32 | IS_RW_PRIORITY,
.lch_count = 32,
};
/* dma_system */
static struct omap_hwmod dra7xx_dma_system_hwmod = {
.name = "dma_system",
.class = &dra7xx_dma_hwmod_class,
.clkdm_name = "dma_clkdm",
.main_clk = "l3_iclk_div",
.prcm = {
.omap4 = {
.clkctrl_offs = DRA7XX_CM_DMA_DMA_SYSTEM_CLKCTRL_OFFSET,
.context_offs = DRA7XX_RM_DMA_DMA_SYSTEM_CONTEXT_OFFSET,
},
},
.dev_attr = &dma_dev_attr,
};
/*
* 'tpcc' class
*
@ -1128,14 +1077,6 @@ static struct omap_hwmod_ocp_if dra7xx_l4_wkup__ctrl_module_wkup = {
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* l4_cfg -> dma_system */
static struct omap_hwmod_ocp_if dra7xx_l4_cfg__dma_system = {
.master = &dra7xx_l4_cfg_hwmod,
.slave = &dra7xx_dma_system_hwmod,
.clk = "l3_iclk_div",
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* l3_main_1 -> tpcc */
static struct omap_hwmod_ocp_if dra7xx_l3_main_1__tpcc = {
.master = &dra7xx_l3_main_1_hwmod,
@ -1368,7 +1309,6 @@ static struct omap_hwmod_ocp_if *dra7xx_hwmod_ocp_ifs[] __initdata = {
&dra7xx_l3_main_1__bb2d,
&dra7xx_l4_wkup__counter_32k,
&dra7xx_l4_wkup__ctrl_module_wkup,
&dra7xx_l4_cfg__dma_system,
&dra7xx_l3_main_1__tpcc,
&dra7xx_l3_main_1__tptc0,
&dra7xx_l3_main_1__tptc1,

1
arch/arm/mach-omap2/omap_hwmod_common_data.h
View File

@ -98,7 +98,6 @@ extern struct omap_hwmod_class omap2_hdq1w_class;
extern struct omap_hwmod_class omap2xxx_timer_hwmod_class;
extern struct omap_hwmod_class omap2xxx_wd_timer_hwmod_class;
extern struct omap_hwmod_class omap2xxx_gpio_hwmod_class;
extern struct omap_hwmod_class omap2xxx_dma_hwmod_class;
extern struct omap_hwmod_class omap2xxx_mailbox_hwmod_class;
extern struct omap_hwmod_class omap2xxx_mcspi_class;

1
arch/arm/mach-omap2/pdata-quirks.c
View File

@ -514,6 +514,7 @@ static struct of_dev_auxdata omap_auxdata_lookup[] = {
/* Common auxdata */
OF_DEV_AUXDATA("ti,sysc", 0, NULL, &ti_sysc_pdata),
OF_DEV_AUXDATA("pinctrl-single", 0, NULL, &pcs_pdata),
OF_DEV_AUXDATA("ti,omap-sdma", 0, NULL, &dma_plat_info),
{ /* sentinel */ },
};

22
arch/arm/mach-omap2/pm24xx.c
View File

@ -83,8 +83,6 @@ static int omap2_enter_full_retention(void)
l = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0) | OMAP24XX_USBSTANDBYCTRL;
omap_ctrl_writel(l, OMAP2_CONTROL_DEVCONF0);
cpu_cluster_pm_enter();
/* One last check for pending IRQs to avoid extra latency due
* to sleeping unnecessarily. */
if (omap_irq_pending())
@ -96,8 +94,6 @@ static int omap2_enter_full_retention(void)
OMAP_SDRC_REGADDR(SDRC_POWER));
no_sleep:
cpu_cluster_pm_exit();
clk_enable(osc_ck);
/* clear CORE wake-up events */
@ -162,25 +158,27 @@ static int omap2_can_sleep(void)
return 0;
if (__clk_is_enabled(osc_ck))
return 0;
if (omap_dma_running())
return 0;
return 1;
}
static void omap2_pm_idle(void)
{
if (!omap2_can_sleep()) {
if (omap_irq_pending())
return;
omap2_enter_mpu_retention();
return;
}
int error;
if (omap_irq_pending())
return;
error = cpu_cluster_pm_enter();
if (error || !omap2_can_sleep()) {
omap2_enter_mpu_retention();
goto out_cpu_cluster_pm;
}
omap2_enter_full_retention();
out_cpu_cluster_pm:
cpu_cluster_pm_exit();
}
static void __init prcm_setup_regs(void)

5
arch/arm/mach-omap2/pm34xx.c
View File

@ -25,7 +25,6 @@
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/omap-dma.h>
#include <linux/omap-gpmc.h>
#include <trace/events/power.h>
@ -85,7 +84,6 @@ static void omap3_core_save_context(void)
omap3_gpmc_save_context();
/* Save the system control module context, padconf already save above*/
omap3_control_save_context();
omap_dma_global_context_save();
}
static void omap3_core_restore_context(void)
@ -96,7 +94,6 @@ static void omap3_core_restore_context(void)
omap3_gpmc_restore_context();
/* Restore the interrupt controller context */
omap_intc_restore_context();
omap_dma_global_context_restore();
}
/*
@ -547,9 +544,7 @@ int __init omap3_pm_init(void)
local_irq_disable();
omap_dma_global_context_save();
omap3_save_secure_ram_context();
omap_dma_global_context_restore();
local_irq_enable();
}

471
arch/arm/plat-omap/dma.c
View File

@ -65,18 +65,9 @@ enum { DMA_CHAIN_STARTED, DMA_CHAIN_NOTSTARTED };
static struct omap_system_dma_plat_info *p;
static struct omap_dma_dev_attr *d;
static void omap_clear_dma(int lch);
static int omap_dma_set_prio_lch(int lch, unsigned char read_prio,
unsigned char write_prio);
static int enable_1510_mode;
static u32 errata;
static struct omap_dma_global_context_registers {
u32 dma_irqenable_l0;
u32 dma_irqenable_l1;
u32 dma_ocp_sysconfig;
u32 dma_gcr;
} omap_dma_global_context;
struct dma_link_info {
int *linked_dmach_q;
int no_of_lchs_linked;
@ -90,42 +81,6 @@ struct dma_link_info {
};
static struct dma_link_info *dma_linked_lch;
#ifndef CONFIG_ARCH_OMAP1
/* Chain handling macros */
#define OMAP_DMA_CHAIN_QINIT(chain_id) \
do { \
dma_linked_lch[chain_id].q_head = \
dma_linked_lch[chain_id].q_tail = \
dma_linked_lch[chain_id].q_count = 0; \
} while (0)
#define OMAP_DMA_CHAIN_QFULL(chain_id) \
(dma_linked_lch[chain_id].no_of_lchs_linked == \
dma_linked_lch[chain_id].q_count)
#define OMAP_DMA_CHAIN_QLAST(chain_id) \
do { \
((dma_linked_lch[chain_id].no_of_lchs_linked-1) == \
dma_linked_lch[chain_id].q_count) \
} while (0)
#define OMAP_DMA_CHAIN_QEMPTY(chain_id) \
(0 == dma_linked_lch[chain_id].q_count)
#define __OMAP_DMA_CHAIN_INCQ(end) \
((end) = ((end)+1) % dma_linked_lch[chain_id].no_of_lchs_linked)
#define OMAP_DMA_CHAIN_INCQHEAD(chain_id) \
do { \
__OMAP_DMA_CHAIN_INCQ(dma_linked_lch[chain_id].q_head); \
dma_linked_lch[chain_id].q_count--; \
} while (0)
#define OMAP_DMA_CHAIN_INCQTAIL(chain_id) \
do { \
__OMAP_DMA_CHAIN_INCQ(dma_linked_lch[chain_id].q_tail); \
dma_linked_lch[chain_id].q_count++; \
} while (0)
#endif
static int dma_lch_count;
static int dma_chan_count;
static int omap_dma_reserve_channels;
@ -137,9 +92,6 @@ static inline void disable_lnk(int lch);
static void omap_disable_channel_irq(int lch);
static inline void omap_enable_channel_irq(int lch);
#define REVISIT_24XX() printk(KERN_ERR "FIXME: no %s on 24xx\n", \
__func__);
#ifdef CONFIG_ARCH_OMAP15XX
/* Returns 1 if the DMA module is in OMAP1510-compatible mode, 0 otherwise */
static int omap_dma_in_1510_mode(void)
@ -278,19 +230,6 @@ void omap_set_dma_transfer_params(int lch, int data_type, int elem_count,
}
EXPORT_SYMBOL(omap_set_dma_transfer_params);
void omap_set_dma_write_mode(int lch, enum omap_dma_write_mode mode)
{
if (dma_omap2plus()) {
u32 csdp;
csdp = p->dma_read(CSDP, lch);
csdp &= ~(0x3 << 16);
csdp |= (mode << 16);
p->dma_write(csdp, CSDP, lch);
}
}
EXPORT_SYMBOL(omap_set_dma_write_mode);
void omap_set_dma_channel_mode(int lch, enum omap_dma_channel_mode mode)
{
if (dma_omap1() && !dma_omap15xx()) {
@ -332,25 +271,6 @@ void omap_set_dma_src_params(int lch, int src_port, int src_amode,
}
EXPORT_SYMBOL(omap_set_dma_src_params);
void omap_set_dma_params(int lch, struct omap_dma_channel_params *params)
{
omap_set_dma_transfer_params(lch, params->data_type,
params->elem_count, params->frame_count,
params->sync_mode, params->trigger,
params->src_or_dst_synch);
omap_set_dma_src_params(lch, params->src_port,
params->src_amode, params->src_start,
params->src_ei, params->src_fi);
omap_set_dma_dest_params(lch, params->dst_port,
params->dst_amode, params->dst_start,
params->dst_ei, params->dst_fi);
if (params->read_prio || params->write_prio)
omap_dma_set_prio_lch(lch, params->read_prio,
params->write_prio);
}
EXPORT_SYMBOL(omap_set_dma_params);
void omap_set_dma_src_data_pack(int lch, int enable)
{
u32 l;
@ -507,12 +427,6 @@ static inline void omap_disable_channel_irq(int lch)
p->dma_write(OMAP2_DMA_CSR_CLEAR_MASK, CSR, lch);
}
void omap_enable_dma_irq(int lch, u16 bits)
{
dma_chan[lch].enabled_irqs |= bits;
}
EXPORT_SYMBOL(omap_enable_dma_irq);
void omap_disable_dma_irq(int lch, u16 bits)
{
dma_chan[lch].enabled_irqs &= ~bits;
@ -532,12 +446,6 @@ static inline void enable_lnk(int lch)
if (dma_chan[lch].next_lch != -1)
l = dma_chan[lch].next_lch | (1 << 15);
#ifndef CONFIG_ARCH_OMAP1
if (dma_omap2plus())
if (dma_chan[lch].next_linked_ch != -1)
l = dma_chan[lch].next_linked_ch | (1 << 15);
#endif
p->dma_write(l, CLNK_CTRL, lch);
}
@ -564,42 +472,6 @@ static inline void disable_lnk(int lch)
dma_chan[lch].flags &= ~OMAP_DMA_ACTIVE;
}
static inline void omap2_enable_irq_lch(int lch)
{
u32 val;
unsigned long flags;
if (dma_omap1())
return;
spin_lock_irqsave(&dma_chan_lock, flags);
/* clear IRQ STATUS */
p->dma_write(1 << lch, IRQSTATUS_L0, lch);
/* Enable interrupt */
val = p->dma_read(IRQENABLE_L0, lch);
val |= 1 << lch;
p->dma_write(val, IRQENABLE_L0, lch);
spin_unlock_irqrestore(&dma_chan_lock, flags);
}
static inline void omap2_disable_irq_lch(int lch)
{
u32 val;
unsigned long flags;
if (dma_omap1())
return;
spin_lock_irqsave(&dma_chan_lock, flags);
/* Disable interrupt */
val = p->dma_read(IRQENABLE_L0, lch);
val &= ~(1 << lch);
p->dma_write(val, IRQENABLE_L0, lch);
/* clear IRQ STATUS */
p->dma_write(1 << lch, IRQSTATUS_L0, lch);
spin_unlock_irqrestore(&dma_chan_lock, flags);
}
int omap_request_dma(int dev_id, const char *dev_name,
void (*callback)(int lch, u16 ch_status, void *data),
void *data, int *dma_ch_out)
@ -628,9 +500,6 @@ int omap_request_dma(int dev_id, const char *dev_name,
if (p->clear_lch_regs)
p->clear_lch_regs(free_ch);
if (dma_omap2plus())
omap_clear_dma(free_ch);
spin_unlock_irqrestore(&dma_chan_lock, flags);
chan->dev_name = dev_name;
@ -638,20 +507,10 @@ int omap_request_dma(int dev_id, const char *dev_name,
chan->data = data;
chan->flags = 0;
#ifndef CONFIG_ARCH_OMAP1
if (dma_omap2plus()) {
chan->chain_id = -1;
chan->next_linked_ch = -1;
}
#endif
chan->enabled_irqs = OMAP_DMA_DROP_IRQ | OMAP_DMA_BLOCK_IRQ;
if (dma_omap1())
chan->enabled_irqs |= OMAP1_DMA_TOUT_IRQ;
else if (dma_omap2plus())
chan->enabled_irqs |= OMAP2_DMA_MISALIGNED_ERR_IRQ |
OMAP2_DMA_TRANS_ERR_IRQ;
if (dma_omap16xx()) {
/* If the sync device is set, configure it dynamically. */
@ -668,11 +527,6 @@ int omap_request_dma(int dev_id, const char *dev_name,
p->dma_write(dev_id, CCR, free_ch);
}
if (dma_omap2plus()) {
omap_enable_channel_irq(free_ch);
omap2_enable_irq_lch(free_ch);
}
*dma_ch_out = free_ch;
return 0;
@ -689,20 +543,12 @@ void omap_free_dma(int lch)
return;
}
/* Disable interrupt for logical channel */
if (dma_omap2plus())
omap2_disable_irq_lch(lch);
/* Disable all DMA interrupts for the channel. */
omap_disable_channel_irq(lch);
/* Make sure the DMA transfer is stopped. */
p->dma_write(0, CCR, lch);
/* Clear registers */
if (dma_omap2plus())
omap_clear_dma(lch);
spin_lock_irqsave(&dma_chan_lock, flags);
dma_chan[lch].dev_id = -1;
dma_chan[lch].next_lch = -1;
@ -711,71 +557,6 @@ void omap_free_dma(int lch)
}
EXPORT_SYMBOL(omap_free_dma);
/**
* @brief omap_dma_set_global_params : Set global priority settings for dma
*
* @param arb_rate
* @param max_fifo_depth
* @param tparams - Number of threads to reserve : DMA_THREAD_RESERVE_NORM
* DMA_THREAD_RESERVE_ONET
* DMA_THREAD_RESERVE_TWOT
* DMA_THREAD_RESERVE_THREET
*/
void
omap_dma_set_global_params(int arb_rate, int max_fifo_depth, int tparams)
{
u32 reg;
if (dma_omap1()) {
printk(KERN_ERR "FIXME: no %s on 15xx/16xx\n", __func__);
return;
}
if (max_fifo_depth == 0)
max_fifo_depth = 1;
if (arb_rate == 0)
arb_rate = 1;
reg = 0xff & max_fifo_depth;
reg |= (0x3 & tparams) << 12;
reg |= (arb_rate & 0xff) << 16;
p->dma_write(reg, GCR, 0);
}
EXPORT_SYMBOL(omap_dma_set_global_params);
/**
* @brief omap_dma_set_prio_lch : Set channel wise priority settings
*
* @param lch
* @param read_prio - Read priority
* @param write_prio - Write priority
* Both of the above can be set with one of the following values :
* DMA_CH_PRIO_HIGH/DMA_CH_PRIO_LOW
*/
static int
omap_dma_set_prio_lch(int lch, unsigned char read_prio,
unsigned char write_prio)
{
u32 l;
if (unlikely((lch < 0 || lch >= dma_lch_count))) {
printk(KERN_ERR "Invalid channel id\n");
return -EINVAL;
}
l = p->dma_read(CCR, lch);
l &= ~((1 << 6) | (1 << 26));
if (d->dev_caps & IS_RW_PRIORITY)
l |= ((read_prio & 0x1) << 6) | ((write_prio & 0x1) << 26);
else
l |= ((read_prio & 0x1) << 6);
p->dma_write(l, CCR, lch);
return 0;
}
/*
* Clears any DMA state so the DMA engine is ready to restart with new buffers
* through omap_start_dma(). Any buffers in flight are discarded.
@ -926,29 +707,6 @@ EXPORT_SYMBOL(omap_stop_dma);
* Allows changing the DMA callback function or data. This may be needed if
* the driver shares a single DMA channel for multiple dma triggers.
*/
int omap_set_dma_callback(int lch,
void (*callback)(int lch, u16 ch_status, void *data),
void *data)
{
unsigned long flags;
if (lch < 0)
return -ENODEV;
spin_lock_irqsave(&dma_chan_lock, flags);
if (dma_chan[lch].dev_id == -1) {
printk(KERN_ERR "DMA callback for not set for free channel\n");
spin_unlock_irqrestore(&dma_chan_lock, flags);
return -EINVAL;
}
dma_chan[lch].callback = callback;
dma_chan[lch].data = data;
spin_unlock_irqrestore(&dma_chan_lock, flags);
return 0;
}
EXPORT_SYMBOL(omap_set_dma_callback);
/*
* Returns current physical source address for the given DMA channel.
* If the channel is running the caller must disable interrupts prior calling
@ -1048,34 +806,6 @@ int omap_dma_running(void)
return 0;
}
/*
* lch_queue DMA will start right after lch_head one is finished.
* For this DMA link to start, you still need to start (see omap_start_dma)
* the first one. That will fire up the entire queue.
*/
void omap_dma_link_lch(int lch_head, int lch_queue)
{
if (omap_dma_in_1510_mode()) {
if (lch_head == lch_queue) {
p->dma_write(p->dma_read(CCR, lch_head) | (3 << 8),
CCR, lch_head);
return;
}
printk(KERN_ERR "DMA linking is not supported in 1510 mode\n");
BUG();
return;
}
if ((dma_chan[lch_head].dev_id == -1) ||
(dma_chan[lch_queue].dev_id == -1)) {
pr_err("omap_dma: trying to link non requested channels\n");
dump_stack();
}
dma_chan[lch_head].next_lch = lch_queue;
}
EXPORT_SYMBOL(omap_dma_link_lch);
/*----------------------------------------------------------------------------*/
#ifdef CONFIG_ARCH_OMAP1
@ -1136,145 +866,6 @@ static irqreturn_t omap1_dma_irq_handler(int irq, void *dev_id)
#define omap1_dma_irq_handler NULL
#endif
#ifdef CONFIG_ARCH_OMAP2PLUS
static int omap2_dma_handle_ch(int ch)
{
u32 status = p->dma_read(CSR, ch);
if (!status) {
if (printk_ratelimit())
pr_warn("Spurious DMA IRQ for lch %d\n", ch);
p->dma_write(1 << ch, IRQSTATUS_L0, ch);
return 0;
}
if (unlikely(dma_chan[ch].dev_id == -1)) {
if (printk_ratelimit())
pr_warn("IRQ %04x for non-allocated DMA channel %d\n",
status, ch);
return 0;
}
if (unlikely(status & OMAP_DMA_DROP_IRQ))
pr_info("DMA synchronization event drop occurred with device %d\n",
dma_chan[ch].dev_id);
if (unlikely(status & OMAP2_DMA_TRANS_ERR_IRQ)) {
printk(KERN_INFO "DMA transaction error with device %d\n",
dma_chan[ch].dev_id);
if (IS_DMA_ERRATA(DMA_ERRATA_i378)) {
u32 ccr;
ccr = p->dma_read(CCR, ch);
ccr &= ~OMAP_DMA_CCR_EN;
p->dma_write(ccr, CCR, ch);
dma_chan[ch].flags &= ~OMAP_DMA_ACTIVE;
}
}
if (unlikely(status & OMAP2_DMA_SECURE_ERR_IRQ))
printk(KERN_INFO "DMA secure error with device %d\n",
dma_chan[ch].dev_id);
if (unlikely(status & OMAP2_DMA_MISALIGNED_ERR_IRQ))
printk(KERN_INFO "DMA misaligned error with device %d\n",
dma_chan[ch].dev_id);
p->dma_write(status, CSR, ch);
p->dma_write(1 << ch, IRQSTATUS_L0, ch);
/* read back the register to flush the write */
p->dma_read(IRQSTATUS_L0, ch);
/* If the ch is not chained then chain_id will be -1 */
if (dma_chan[ch].chain_id != -1) {
int chain_id = dma_chan[ch].chain_id;
dma_chan[ch].state = DMA_CH_NOTSTARTED;
if (p->dma_read(CLNK_CTRL, ch) & (1 << 15))
dma_chan[dma_chan[ch].next_linked_ch].state =
DMA_CH_STARTED;
if (dma_linked_lch[chain_id].chain_mode ==
OMAP_DMA_DYNAMIC_CHAIN)
disable_lnk(ch);
if (!OMAP_DMA_CHAIN_QEMPTY(chain_id))
OMAP_DMA_CHAIN_INCQHEAD(chain_id);
status = p->dma_read(CSR, ch);
p->dma_write(status, CSR, ch);
}
if (likely(dma_chan[ch].callback != NULL))
dma_chan[ch].callback(ch, status, dma_chan[ch].data);
return 0;
}
/* STATUS register count is from 1-32 while our is 0-31 */
static irqreturn_t omap2_dma_irq_handler(int irq, void *dev_id)
{
u32 val, enable_reg;
int i;
val = p->dma_read(IRQSTATUS_L0, 0);
if (val == 0) {
if (printk_ratelimit())
printk(KERN_WARNING "Spurious DMA IRQ\n");
return IRQ_HANDLED;
}
enable_reg = p->dma_read(IRQENABLE_L0, 0);
val &= enable_reg; /* Dispatch only relevant interrupts */
for (i = 0; i < dma_lch_count && val != 0; i++) {
if (val & 1)
omap2_dma_handle_ch(i);
val >>= 1;
}
return IRQ_HANDLED;
}
static struct irqaction omap24xx_dma_irq = {
.name = "DMA",
.handler = omap2_dma_irq_handler,
};
#else
static struct irqaction omap24xx_dma_irq;
#endif
/*----------------------------------------------------------------------------*/
/*
* Note that we are currently using only IRQENABLE_L0 and L1.
* As the DSP may be using IRQENABLE_L2 and L3, let's not
* touch those for now.
*/
void omap_dma_global_context_save(void)
{
omap_dma_global_context.dma_irqenable_l0 =
p->dma_read(IRQENABLE_L0, 0);
omap_dma_global_context.dma_irqenable_l1 =
p->dma_read(IRQENABLE_L1, 0);
omap_dma_global_context.dma_ocp_sysconfig =
p->dma_read(OCP_SYSCONFIG, 0);
omap_dma_global_context.dma_gcr = p->dma_read(GCR, 0);
}
void omap_dma_global_context_restore(void)
{
int ch;
p->dma_write(omap_dma_global_context.dma_gcr, GCR, 0);
p->dma_write(omap_dma_global_context.dma_ocp_sysconfig,
OCP_SYSCONFIG, 0);
p->dma_write(omap_dma_global_context.dma_irqenable_l0,
IRQENABLE_L0, 0);
p->dma_write(omap_dma_global_context.dma_irqenable_l1,
IRQENABLE_L1, 0);
if (IS_DMA_ERRATA(DMA_ROMCODE_BUG))
p->dma_write(0x3 , IRQSTATUS_L0, 0);
for (ch = 0; ch < dma_chan_count; ch++)
if (dma_chan[ch].dev_id != -1)
omap_clear_dma(ch);
}
struct omap_system_dma_plat_info *omap_get_plat_info(void)
{
return p;
@ -1286,7 +877,6 @@ static int omap_system_dma_probe(struct platform_device *pdev)
int ch, ret = 0;
int dma_irq;
char irq_name[4];
int irq_rel;
p = pdev->dev.platform_data;
if (!p) {
@ -1312,21 +902,9 @@ static int omap_system_dma_probe(struct platform_device *pdev)
if (!dma_chan)
return -ENOMEM;
if (dma_omap2plus()) {
dma_linked_lch = kcalloc(dma_lch_count,
sizeof(*dma_linked_lch),
GFP_KERNEL);
if (!dma_linked_lch) {
ret = -ENOMEM;
goto exit_dma_lch_fail;
}
}
spin_lock_init(&dma_chan_lock);
for (ch = 0; ch < dma_chan_count; ch++) {
omap_clear_dma(ch);
if (dma_omap2plus())
omap2_disable_irq_lch(ch);
dma_chan[ch].dev_id = -1;
dma_chan[ch].next_lch = -1;
@ -1359,26 +937,6 @@ static int omap_system_dma_probe(struct platform_device *pdev)
}
}
if (d->dev_caps & IS_RW_PRIORITY)
omap_dma_set_global_params(DMA_DEFAULT_ARB_RATE,
DMA_DEFAULT_FIFO_DEPTH, 0);
if (dma_omap2plus() && !(d->dev_caps & DMA_ENGINE_HANDLE_IRQ)) {
strcpy(irq_name, "0");
dma_irq = platform_get_irq_byname(pdev, irq_name);
if (dma_irq < 0) {
dev_err(&pdev->dev, "failed: request IRQ %d", dma_irq);
ret = dma_irq;
goto exit_dma_lch_fail;
}
ret = setup_irq(dma_irq, &omap24xx_dma_irq);
if (ret) {
dev_err(&pdev->dev, "set_up failed for IRQ %d for DMA (error %d)\n",
dma_irq, ret);
goto exit_dma_lch_fail;
}
}
/* reserve dma channels 0 and 1 in high security devices on 34xx */
if (d->dev_caps & HS_CHANNELS_RESERVED) {
pr_info("Reserving DMA channels 0 and 1 for HS ROM code\n");
@ -1389,34 +947,21 @@ static int omap_system_dma_probe(struct platform_device *pdev)
return 0;
exit_dma_irq_fail:
dev_err(&pdev->dev, "unable to request IRQ %d for DMA (error %d)\n",
dma_irq, ret);
for (irq_rel = 0; irq_rel < ch; irq_rel++) {
dma_irq = platform_get_irq(pdev, irq_rel);
free_irq(dma_irq, (void *)(irq_rel + 1));
}
exit_dma_lch_fail:
return ret;
}
static int omap_system_dma_remove(struct platform_device *pdev)
{
int dma_irq;
int dma_irq, irq_rel = 0;
if (dma_omap2plus()) {
char irq_name[4];
strcpy(irq_name, "0");
dma_irq = platform_get_irq_byname(pdev, irq_name);
if (dma_irq >= 0)
remove_irq(dma_irq, &omap24xx_dma_irq);
} else {
int irq_rel = 0;
for ( ; irq_rel < dma_chan_count; irq_rel++) {
dma_irq = platform_get_irq(pdev, irq_rel);
free_irq(dma_irq, (void *)(irq_rel + 1));
}
if (dma_omap2plus())
return 0;
for ( ; irq_rel < dma_chan_count; irq_rel++) {
dma_irq = platform_get_irq(pdev, irq_rel);
free_irq(dma_irq, (void *)(irq_rel + 1));
}
return 0;
}

286
drivers/dma/ti/omap-dma.c
View File

@ -2,6 +2,7 @@
/*
* OMAP DMAengine support
*/
#include <linux/cpu_pm.h>
#include <linux/delay.h>
#include <linux/dmaengine.h>
#include <linux/dma-mapping.h>
@ -23,12 +24,33 @@
#define OMAP_SDMA_REQUESTS 127
#define OMAP_SDMA_CHANNELS 32
struct omap_dma_config {
int lch_end;
unsigned int rw_priority:1;
unsigned int needs_busy_check:1;
unsigned int may_lose_context:1;
unsigned int needs_lch_clear:1;
};
struct omap_dma_context {
u32 irqenable_l0;
u32 irqenable_l1;
u32 ocp_sysconfig;
u32 gcr;
};
struct omap_dmadev {
struct dma_device ddev;
spinlock_t lock;
void __iomem *base;
const struct omap_dma_reg *reg_map;
struct omap_system_dma_plat_info *plat;
const struct omap_dma_config *cfg;
struct notifier_block nb;
struct omap_dma_context context;
int lch_count;
DECLARE_BITMAP(lch_bitmap, OMAP_SDMA_CHANNELS);
struct mutex lch_lock; /* for assigning logical channels */
bool legacy;
bool ll123_supported;
struct dma_pool *desc_pool;
@ -376,6 +398,19 @@ static unsigned omap_dma_get_csr(struct omap_chan *c)
return val;
}
static void omap_dma_clear_lch(struct omap_dmadev *od, int lch)
{
struct omap_chan *c;
int i;
c = od->lch_map[lch];
if (!c)
return;
for (i = CSDP; i <= od->cfg->lch_end; i++)
omap_dma_chan_write(c, i, 0);
}
static void omap_dma_assign(struct omap_dmadev *od, struct omap_chan *c,
unsigned lch)
{
@ -633,6 +668,37 @@ static irqreturn_t omap_dma_irq(int irq, void *devid)
return IRQ_HANDLED;
}
static int omap_dma_get_lch(struct omap_dmadev *od, int *lch)
{
int channel;
mutex_lock(&od->lch_lock);
channel = find_first_zero_bit(od->lch_bitmap, od->lch_count);
if (channel >= od->lch_count)
goto out_busy;
set_bit(channel, od->lch_bitmap);
mutex_unlock(&od->lch_lock);
omap_dma_clear_lch(od, channel);
*lch = channel;
return 0;
out_busy:
mutex_unlock(&od->lch_lock);
*lch = -EINVAL;
return -EBUSY;
}
static void omap_dma_put_lch(struct omap_dmadev *od, int lch)
{
omap_dma_clear_lch(od, lch);
mutex_lock(&od->lch_lock);
clear_bit(lch, od->lch_bitmap);
mutex_unlock(&od->lch_lock);
}
static int omap_dma_alloc_chan_resources(struct dma_chan *chan)
{
struct omap_dmadev *od = to_omap_dma_dev(chan->device);
@ -644,8 +710,7 @@ static int omap_dma_alloc_chan_resources(struct dma_chan *chan)
ret = omap_request_dma(c->dma_sig, "DMA engine",
omap_dma_callback, c, &c->dma_ch);
} else {
ret = omap_request_dma(c->dma_sig, "DMA engine", NULL, NULL,
&c->dma_ch);
ret = omap_dma_get_lch(od, &c->dma_ch);
}
dev_dbg(dev, "allocating channel %u for %u\n", c->dma_ch, c->dma_sig);
@ -702,7 +767,11 @@ static void omap_dma_free_chan_resources(struct dma_chan *chan)
c->channel_base = NULL;
od->lch_map[c->dma_ch] = NULL;
vchan_free_chan_resources(&c->vc);
omap_free_dma(c->dma_ch);
if (od->legacy)
omap_free_dma(c->dma_ch);
else
omap_dma_put_lch(od, c->dma_ch);
dev_dbg(od->ddev.dev, "freeing channel %u used for %u\n", c->dma_ch,
c->dma_sig);
@ -1453,16 +1522,128 @@ static void omap_dma_free(struct omap_dmadev *od)
}
}
/* Currently only used for omap2. For omap1, also a check for lcd_dma is needed */
static int omap_dma_busy_notifier(struct notifier_block *nb,
unsigned long cmd, void *v)
{
struct omap_dmadev *od;
struct omap_chan *c;
int lch = -1;
od = container_of(nb, struct omap_dmadev, nb);
switch (cmd) {
case CPU_CLUSTER_PM_ENTER:
while (1) {
lch = find_next_bit(od->lch_bitmap, od->lch_count,
lch + 1);
if (lch >= od->lch_count)
break;
c = od->lch_map[lch];
if (!c)
continue;
if (omap_dma_chan_read(c, CCR) & CCR_ENABLE)
return NOTIFY_BAD;
}
break;
case CPU_CLUSTER_PM_ENTER_FAILED:
case CPU_CLUSTER_PM_EXIT:
break;
}
return NOTIFY_OK;
}
/*
* We are using IRQENABLE_L1, and legacy DMA code was using IRQENABLE_L0.
* As the DSP may be using IRQENABLE_L2 and L3, let's not touch those for
* now. Context save seems to be only currently needed on omap3.
*/
static void omap_dma_context_save(struct omap_dmadev *od)
{
od->context.irqenable_l0 = omap_dma_glbl_read(od, IRQENABLE_L0);
od->context.irqenable_l1 = omap_dma_glbl_read(od, IRQENABLE_L1);
od->context.ocp_sysconfig = omap_dma_glbl_read(od, OCP_SYSCONFIG);
od->context.gcr = omap_dma_glbl_read(od, GCR);
}
static void omap_dma_context_restore(struct omap_dmadev *od)
{
int i;
omap_dma_glbl_write(od, GCR, od->context.gcr);
omap_dma_glbl_write(od, OCP_SYSCONFIG, od->context.ocp_sysconfig);
omap_dma_glbl_write(od, IRQENABLE_L0, od->context.irqenable_l0);
omap_dma_glbl_write(od, IRQENABLE_L1, od->context.irqenable_l1);
/* Clear IRQSTATUS_L0 as legacy DMA code is no longer doing it */
if (od->plat->errata & DMA_ROMCODE_BUG)
omap_dma_glbl_write(od, IRQSTATUS_L0, 0);
/* Clear dma channels */
for (i = 0; i < od->lch_count; i++)
omap_dma_clear_lch(od, i);
}
/* Currently only used for omap3 */
static int omap_dma_context_notifier(struct notifier_block *nb,
unsigned long cmd, void *v)
{
struct omap_dmadev *od;
od = container_of(nb, struct omap_dmadev, nb);
switch (cmd) {
case CPU_CLUSTER_PM_ENTER:
omap_dma_context_save(od);
break;
case CPU_CLUSTER_PM_ENTER_FAILED:
case CPU_CLUSTER_PM_EXIT:
omap_dma_context_restore(od);
break;
}
return NOTIFY_OK;
}
static void omap_dma_init_gcr(struct omap_dmadev *od, int arb_rate,
int max_fifo_depth, int tparams)
{
u32 val;
/* Set only for omap2430 and later */
if (!od->cfg->rw_priority)
return;
if (max_fifo_depth == 0)
max_fifo_depth = 1;
if (arb_rate == 0)
arb_rate = 1;
val = 0xff & max_fifo_depth;
val |= (0x3 & tparams) << 12;
val |= (arb_rate & 0xff) << 16;
omap_dma_glbl_write(od, GCR, val);
}
#define OMAP_DMA_BUSWIDTHS (BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) | \
BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) | \
BIT(DMA_SLAVE_BUSWIDTH_4_BYTES))
/*
* No flags currently set for default configuration as omap1 is still
* using platform data.
*/
static const struct omap_dma_config default_cfg;
static int omap_dma_probe(struct platform_device *pdev)
{
const struct omap_dma_config *conf;
struct omap_dmadev *od;
struct resource *res;
int rc, i, irq;
u32 lch_count;
u32 val;
od = devm_kzalloc(&pdev->dev, sizeof(*od), GFP_KERNEL);
if (!od)
@ -1473,9 +1654,19 @@ static int omap_dma_probe(struct platform_device *pdev)
if (IS_ERR(od->base))
return PTR_ERR(od->base);
od->plat = omap_get_plat_info();
if (!od->plat)
return -EPROBE_DEFER;
conf = of_device_get_match_data(&pdev->dev);
if (conf) {
od->cfg = conf;
od->plat = dev_get_platdata(&pdev->dev);
if (!od->plat)
dev_warn(&pdev->dev, "no sdma auxdata needed?\n");
} else {
od->cfg = &default_cfg;
od->plat = omap_get_plat_info();
if (!od->plat)
return -EPROBE_DEFER;
}
od->reg_map = od->plat->reg_map;
@ -1507,6 +1698,7 @@ static int omap_dma_probe(struct platform_device *pdev)
od->ddev.max_burst = SZ_16M - 1; /* CCEN: 24bit unsigned */
od->ddev.dev = &pdev->dev;
INIT_LIST_HEAD(&od->ddev.channels);
mutex_init(&od->lch_lock);
spin_lock_init(&od->lock);
spin_lock_init(&od->irq_lock);
@ -1522,18 +1714,30 @@ static int omap_dma_probe(struct platform_device *pdev)
/* Number of available logical channels */
if (!pdev->dev.of_node) {
lch_count = od->plat->dma_attr->lch_count;
if (unlikely(!lch_count))
lch_count = OMAP_SDMA_CHANNELS;
od->lch_count = od->plat->dma_attr->lch_count;
if (unlikely(!od->lch_count))
od->lch_count = OMAP_SDMA_CHANNELS;
} else if (of_property_read_u32(pdev->dev.of_node, "dma-channels",
&lch_count)) {
&od->lch_count)) {
dev_info(&pdev->dev,
"Missing dma-channels property, using %u.\n",
OMAP_SDMA_CHANNELS);
lch_count = OMAP_SDMA_CHANNELS;
od->lch_count = OMAP_SDMA_CHANNELS;
}
od->lch_map = devm_kcalloc(&pdev->dev, lch_count, sizeof(*od->lch_map),
/* Mask of allowed logical channels */
if (pdev->dev.of_node && !of_property_read_u32(pdev->dev.of_node,
"dma-channel-mask",
&val)) {
/* Tag channels not in mask as reserved */
val = ~val;
bitmap_from_arr32(od->lch_bitmap, &val, od->lch_count);
}
if (od->plat->dma_attr->dev_caps & HS_CHANNELS_RESERVED)
bitmap_set(od->lch_bitmap, 0, 2);
od->lch_map = devm_kcalloc(&pdev->dev, od->lch_count,
sizeof(*od->lch_map),
GFP_KERNEL);
if (!od->lch_map)
return -ENOMEM;
@ -1605,6 +1809,16 @@ static int omap_dma_probe(struct platform_device *pdev)
}
}
omap_dma_init_gcr(od, DMA_DEFAULT_ARB_RATE, DMA_DEFAULT_FIFO_DEPTH, 0);
if (od->cfg->needs_busy_check) {
od->nb.notifier_call = omap_dma_busy_notifier;
cpu_pm_register_notifier(&od->nb);
} else if (od->cfg->may_lose_context) {
od->nb.notifier_call = omap_dma_context_notifier;
cpu_pm_register_notifier(&od->nb);
}
dev_info(&pdev->dev, "OMAP DMA engine driver%s\n",
od->ll123_supported ? " (LinkedList1/2/3 supported)" : "");
@ -1616,6 +1830,9 @@ static int omap_dma_remove(struct platform_device *pdev)
struct omap_dmadev *od = platform_get_drvdata(pdev);
int irq;
if (od->cfg->may_lose_context)
cpu_pm_unregister_notifier(&od->nb);
if (pdev->dev.of_node)
of_dma_controller_free(pdev->dev.of_node);
@ -1637,12 +1854,45 @@ static int omap_dma_remove(struct platform_device *pdev)
return 0;
}
static const struct omap_dma_config omap2420_data = {
.lch_end = CCFN,
.rw_priority = true,
.needs_lch_clear = true,
.needs_busy_check = true,
};
static const struct omap_dma_config omap2430_data = {
.lch_end = CCFN,
.rw_priority = true,
.needs_lch_clear = true,
};
static const struct omap_dma_config omap3430_data = {
.lch_end = CCFN,
.rw_priority = true,
.needs_lch_clear = true,
.may_lose_context = true,
};
static const struct omap_dma_config omap3630_data = {
.lch_end = CCDN,
.rw_priority = true,
.needs_lch_clear = true,
.may_lose_context = true,
};
static const struct omap_dma_config omap4_data = {
.lch_end = CCDN,
.rw_priority = true,
.needs_lch_clear = true,
};
static const struct of_device_id omap_dma_match[] = {
{ .compatible = "ti,omap2420-sdma", },
{ .compatible = "ti,omap2430-sdma", },
{ .compatible = "ti,omap3430-sdma", },
{ .compatible = "ti,omap3630-sdma", },
{ .compatible = "ti,omap4430-sdma", },
{ .compatible = "ti,omap2420-sdma", .data = &omap2420_data, },
{ .compatible = "ti,omap2430-sdma", .data = &omap2430_data, },
{ .compatible = "ti,omap3430-sdma", .data = &omap3430_data, },
{ .compatible = "ti,omap3630-sdma", .data = &omap3630_data, },
{ .compatible = "ti,omap4430-sdma", .data = &omap4_data, },
{},
};
MODULE_DEVICE_TABLE(of, omap_dma_match);

18
include/linux/omap-dma.h
View File

@ -129,7 +129,6 @@
#define IS_WORD_16 BIT(0xd)
#define ENABLE_16XX_MODE BIT(0xe)
#define HS_CHANNELS_RESERVED BIT(0xf)
#define DMA_ENGINE_HANDLE_IRQ BIT(0x10)
/* Defines for DMA Capabilities */
#define DMA_HAS_TRANSPARENT_CAPS (0x1 << 18)
@ -239,9 +238,6 @@ struct omap_dma_lch {
void (*callback)(int lch, u16 ch_status, void *data);
void *data;
long flags;
/* required for Dynamic chaining */
int prev_linked_ch;
int next_linked_ch;
int state;
int chain_id;
int status;
@ -303,7 +299,6 @@ extern void omap_set_dma_priority(int lch, int dst_port, int priority);
extern int omap_request_dma(int dev_id, const char *dev_name,
void (*callback)(int lch, u16 ch_status, void *data),
void *data, int *dma_ch);
extern void omap_enable_dma_irq(int ch, u16 irq_bits);
extern void omap_disable_dma_irq(int ch, u16 irq_bits);
extern void omap_free_dma(int ch);
extern void omap_start_dma(int lch);
@ -312,7 +307,6 @@ extern void omap_set_dma_transfer_params(int lch, int data_type,
int elem_count, int frame_count,
int sync_mode,
int dma_trigger, int src_or_dst_synch);
extern void omap_set_dma_write_mode(int lch, enum omap_dma_write_mode mode);
extern void omap_set_dma_channel_mode(int lch, enum omap_dma_channel_mode mode);
extern void omap_set_dma_src_params(int lch, int src_port, int src_amode,
@ -329,22 +323,10 @@ extern void omap_set_dma_dest_data_pack(int lch, int enable);
extern void omap_set_dma_dest_burst_mode(int lch,
enum omap_dma_burst_mode burst_mode);
extern void omap_set_dma_params(int lch,
struct omap_dma_channel_params *params);
extern void omap_dma_link_lch(int lch_head, int lch_queue);
extern int omap_set_dma_callback(int lch,
void (*callback)(int lch, u16 ch_status, void *data),
void *data);
extern dma_addr_t omap_get_dma_src_pos(int lch);
extern dma_addr_t omap_get_dma_dst_pos(int lch);
extern int omap_get_dma_active_status(int lch);
extern int omap_dma_running(void);
extern void omap_dma_set_global_params(int arb_rate, int max_fifo_depth,
int tparams);
void omap_dma_global_context_save(void);
void omap_dma_global_context_restore(void);
#if defined(CONFIG_ARCH_OMAP1) && IS_ENABLED(CONFIG_FB_OMAP)
#include <mach/lcd_dma.h>