OMAP: mux: Add support for control module split in several partitions
Starting on OMAP4, the pin mux configuration is located in two different partitions of the control module (CODE_PAD and WKUP_PAD). The first one is inside the core power domain whereas the second one is inside the wakeup. - Add the capability to add any number of partition during board init time depending of Soc partitioning. - Add some init flags as well in order to avoid explicit Soc version check inside the mux core code. - Add a comment with mux0 mode on top of omap_mux/board/<partition> if the current mux mode is not the default one. Thanks to Tony Lindgren <tony@atomide.com> for the following improvements: - Add omap_mux_get for getting the partition data so platform level device code can use it. - Fix the rx51 board code to use the new API. - Do not store the partition for each mux entry. Look up the partition for debugfs instead. Thanks to Dan Murphy <dmurphy@ti.com> for testing on OMAP4 and reporting a couple of bugs. Thanks to Anand Gadiyar <gadiyar@ti.com> for testing on OMAP3 zoom and bug report. Signed-off-by: Benoit Cousson <b-cousson@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Tested-by: Murphy Dan <dmurphy@ti.com> Cc: Paul Walmsley <paul@pwsan.com> Cc: Kevin Hilman <khilman@deeprootsystems.com> Cc: Santosh Shilimkar <santosh.shilimkar@ti.com> Cc: Anand Gadiyar <gadiyar@ti.com>
This commit is contained in:
Benoit Cousson
parent
1cbb3a9a13
commit
112485e9c5
@ -293,6 +293,8 @@ static struct omap_board_mux rx51_mmc2_off_mux[] = {
|
||||
{ .reg_offset = OMAP_MUX_TERMINATOR },
|
||||
};
|
||||
|
||||
static struct omap_mux_partition *partition;
|
||||
|
||||
/*
|
||||
* Current flows to eMMC when eMMC is off and the data lines are pulled up,
|
||||
* so pull them down. N.B. we pull 8 lines because we are using 8 lines.
|
||||
@ -300,9 +302,9 @@ static struct omap_board_mux rx51_mmc2_off_mux[] = {
|
||||
static void rx51_mmc2_remux(struct device *dev, int slot, int power_on)
|
||||
{
|
||||
if (power_on)
|
||||
omap_mux_write_array(rx51_mmc2_on_mux);
|
||||
omap_mux_write_array(partition, rx51_mmc2_on_mux);
|
||||
else
|
||||
omap_mux_write_array(rx51_mmc2_off_mux);
|
||||
omap_mux_write_array(partition, rx51_mmc2_off_mux);
|
||||
}
|
||||
|
||||
static struct omap2_hsmmc_info mmc[] __initdata = {
|
||||
@ -922,7 +924,11 @@ void __init rx51_peripherals_init(void)
|
||||
rx51_init_wl1251();
|
||||
spi_register_board_info(rx51_peripherals_spi_board_info,
|
||||
ARRAY_SIZE(rx51_peripherals_spi_board_info));
|
||||
omap2_hsmmc_init(mmc);
|
||||
|
||||
partition = omap_mux_get("core");
|
||||
if (partition)
|
||||
omap2_hsmmc_init(mmc);
|
||||
|
||||
platform_device_register(&rx51_charger_device);
|
||||
}
|
||||
|
||||
|
||||
@ -1,9 +1,9 @@
|
||||
/*
|
||||
* linux/arch/arm/mach-omap2/mux.c
|
||||
*
|
||||
* OMAP2 and OMAP3 pin multiplexing configurations
|
||||
* OMAP2, OMAP3 and OMAP4 pin multiplexing configurations
|
||||
*
|
||||
* Copyright (C) 2004 - 2008 Texas Instruments Inc.
|
||||
* Copyright (C) 2004 - 2010 Texas Instruments Inc.
|
||||
* Copyright (C) 2003 - 2008 Nokia Corporation
|
||||
*
|
||||
* Written by Tony Lindgren
|
||||
@ -40,60 +40,72 @@
|
||||
|
||||
#define OMAP_MUX_BASE_OFFSET 0x30 /* Offset from CTRL_BASE */
|
||||
#define OMAP_MUX_BASE_SZ 0x5ca
|
||||
#define MUXABLE_GPIO_MODE3 BIT(0)
|
||||
|
||||
struct omap_mux_entry {
|
||||
struct omap_mux mux;
|
||||
struct list_head node;
|
||||
};
|
||||
|
||||
static unsigned long mux_phys;
|
||||
static void __iomem *mux_base;
|
||||
static u8 omap_mux_flags;
|
||||
static LIST_HEAD(mux_partitions);
|
||||
static DEFINE_MUTEX(muxmode_mutex);
|
||||
|
||||
u16 omap_mux_read(u16 reg)
|
||||
struct omap_mux_partition *omap_mux_get(const char *name)
|
||||
{
|
||||
if (cpu_is_omap24xx())
|
||||
return __raw_readb(mux_base + reg);
|
||||
else
|
||||
return __raw_readw(mux_base + reg);
|
||||
struct omap_mux_partition *partition;
|
||||
|
||||
list_for_each_entry(partition, &mux_partitions, node) {
|
||||
if (!strcmp(name, partition->name))
|
||||
return partition;
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
void omap_mux_write(u16 val, u16 reg)
|
||||
u16 omap_mux_read(struct omap_mux_partition *partition, u16 reg)
|
||||
{
|
||||
if (cpu_is_omap24xx())
|
||||
__raw_writeb(val, mux_base + reg);
|
||||
if (partition->flags & OMAP_MUX_REG_8BIT)
|
||||
return __raw_readb(partition->base + reg);
|
||||
else
|
||||
__raw_writew(val, mux_base + reg);
|
||||
return __raw_readw(partition->base + reg);
|
||||
}
|
||||
|
||||
void omap_mux_write_array(struct omap_board_mux *board_mux)
|
||||
void omap_mux_write(struct omap_mux_partition *partition, u16 val,
|
||||
u16 reg)
|
||||
{
|
||||
while (board_mux->reg_offset != OMAP_MUX_TERMINATOR) {
|
||||
omap_mux_write(board_mux->value, board_mux->reg_offset);
|
||||
if (partition->flags & OMAP_MUX_REG_8BIT)
|
||||
__raw_writeb(val, partition->base + reg);
|
||||
else
|
||||
__raw_writew(val, partition->base + reg);
|
||||
}
|
||||
|
||||
void omap_mux_write_array(struct omap_mux_partition *partition,
|
||||
struct omap_board_mux *board_mux)
|
||||
{
|
||||
while (board_mux->reg_offset != OMAP_MUX_TERMINATOR) {
|
||||
omap_mux_write(partition, board_mux->value,
|
||||
board_mux->reg_offset);
|
||||
board_mux++;
|
||||
}
|
||||
}
|
||||
|
||||
static LIST_HEAD(muxmodes);
|
||||
static DEFINE_MUTEX(muxmode_mutex);
|
||||
|
||||
#ifdef CONFIG_OMAP_MUX
|
||||
|
||||
static char *omap_mux_options;
|
||||
|
||||
int __init omap_mux_init_gpio(int gpio, int val)
|
||||
static int __init _omap_mux_init_gpio(struct omap_mux_partition *partition,
|
||||
int gpio, int val)
|
||||
{
|
||||
struct omap_mux_entry *e;
|
||||
struct omap_mux *gpio_mux = NULL;
|
||||
u16 old_mode;
|
||||
u16 mux_mode;
|
||||
int found = 0;
|
||||
struct list_head *muxmodes = &partition->muxmodes;
|
||||
|
||||
if (!gpio)
|
||||
return -EINVAL;
|
||||
|
||||
list_for_each_entry(e, &muxmodes, node) {
|
||||
list_for_each_entry(e, muxmodes, node) {
|
||||
struct omap_mux *m = &e->mux;
|
||||
if (gpio == m->gpio) {
|
||||
gpio_mux = m;
|
||||
@ -112,24 +124,40 @@ int __init omap_mux_init_gpio(int gpio, int val)
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
old_mode = omap_mux_read(gpio_mux->reg_offset);
|
||||
old_mode = omap_mux_read(partition, gpio_mux->reg_offset);
|
||||
mux_mode = val & ~(OMAP_MUX_NR_MODES - 1);
|
||||
if (omap_mux_flags & MUXABLE_GPIO_MODE3)
|
||||
if (partition->flags & OMAP_MUX_GPIO_IN_MODE3)
|
||||
mux_mode |= OMAP_MUX_MODE3;
|
||||
else
|
||||
mux_mode |= OMAP_MUX_MODE4;
|
||||
pr_debug("mux: Setting signal %s.gpio%i 0x%04x -> 0x%04x\n",
|
||||
gpio_mux->muxnames[0], gpio, old_mode, mux_mode);
|
||||
omap_mux_write(mux_mode, gpio_mux->reg_offset);
|
||||
omap_mux_write(partition, mux_mode, gpio_mux->reg_offset);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int __init omap_mux_init_signal(const char *muxname, int val)
|
||||
int __init omap_mux_init_gpio(int gpio, int val)
|
||||
{
|
||||
struct omap_mux_partition *partition;
|
||||
int ret;
|
||||
|
||||
list_for_each_entry(partition, &mux_partitions, node) {
|
||||
ret = _omap_mux_init_gpio(partition, gpio, val);
|
||||
if (!ret)
|
||||
return ret;
|
||||
}
|
||||
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
static int __init _omap_mux_init_signal(struct omap_mux_partition *partition,
|
||||
const char *muxname, int val)
|
||||
{
|
||||
struct omap_mux_entry *e;
|
||||
const char *mode_name;
|
||||
int found = 0, mode0_len = 0;
|
||||
struct list_head *muxmodes = &partition->muxmodes;
|
||||
|
||||
mode_name = strchr(muxname, '.');
|
||||
if (mode_name) {
|
||||
@ -139,7 +167,7 @@ int __init omap_mux_init_signal(const char *muxname, int val)
|
||||
mode_name = muxname;
|
||||
}
|
||||
|
||||
list_for_each_entry(e, &muxmodes, node) {
|
||||
list_for_each_entry(e, muxmodes, node) {
|
||||
struct omap_mux *m = &e->mux;
|
||||
char *m0_entry = m->muxnames[0];
|
||||
int i;
|
||||
@ -159,12 +187,14 @@ int __init omap_mux_init_signal(const char *muxname, int val)
|
||||
u16 old_mode;
|
||||
u16 mux_mode;
|
||||
|
||||
old_mode = omap_mux_read(m->reg_offset);
|
||||
old_mode = omap_mux_read(partition,
|
||||
m->reg_offset);
|
||||
mux_mode = val | i;
|
||||
pr_debug("mux: Setting signal "
|
||||
"%s.%s 0x%04x -> 0x%04x\n",
|
||||
m0_entry, muxname, old_mode, mux_mode);
|
||||
omap_mux_write(mux_mode, m->reg_offset);
|
||||
omap_mux_write(partition, mux_mode,
|
||||
m->reg_offset);
|
||||
found++;
|
||||
}
|
||||
}
|
||||
@ -184,6 +214,21 @@ int __init omap_mux_init_signal(const char *muxname, int val)
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
int __init omap_mux_init_signal(const char *muxname, int val)
|
||||
{
|
||||
struct omap_mux_partition *partition;
|
||||
int ret;
|
||||
|
||||
list_for_each_entry(partition, &mux_partitions, node) {
|
||||
ret = _omap_mux_init_signal(partition, muxname, val);
|
||||
if (!ret)
|
||||
return ret;
|
||||
}
|
||||
|
||||
return -ENODEV;
|
||||
|
||||
}
|
||||
|
||||
#ifdef CONFIG_DEBUG_FS
|
||||
|
||||
#define OMAP_MUX_MAX_NR_FLAGS 10
|
||||
@ -248,13 +293,15 @@ static inline void omap_mux_decode(struct seq_file *s, u16 val)
|
||||
} while (i-- > 0);
|
||||
}
|
||||
|
||||
#define OMAP_MUX_DEFNAME_LEN 16
|
||||
#define OMAP_MUX_DEFNAME_LEN 32
|
||||
|
||||
static int omap_mux_dbg_board_show(struct seq_file *s, void *unused)
|
||||
{
|
||||
struct omap_mux_partition *partition = s->private;
|
||||
struct omap_mux_entry *e;
|
||||
u8 omap_gen = omap_rev() >> 28;
|
||||
|
||||
list_for_each_entry(e, &muxmodes, node) {
|
||||
list_for_each_entry(e, &partition->muxmodes, node) {
|
||||
struct omap_mux *m = &e->mux;
|
||||
char m0_def[OMAP_MUX_DEFNAME_LEN];
|
||||
char *m0_name = m->muxnames[0];
|
||||
@ -272,11 +319,16 @@ static int omap_mux_dbg_board_show(struct seq_file *s, void *unused)
|
||||
}
|
||||
m0_def[i] = toupper(m0_name[i]);
|
||||
}
|
||||
val = omap_mux_read(m->reg_offset);
|
||||
val = omap_mux_read(partition, m->reg_offset);
|
||||
mode = val & OMAP_MUX_MODE7;
|
||||
if (mode != 0)
|
||||
seq_printf(s, "/* %s */\n", m->muxnames[mode]);
|
||||
|
||||
seq_printf(s, "OMAP%i_MUX(%s, ",
|
||||
cpu_is_omap34xx() ? 3 : 0, m0_def);
|
||||
/*
|
||||
* XXX: Might be revisited to support differences accross
|
||||
* same OMAP generation.
|
||||
*/
|
||||
seq_printf(s, "OMAP%d_MUX(%s, ", omap_gen, m0_def);
|
||||
omap_mux_decode(s, val);
|
||||
seq_printf(s, "),\n");
|
||||
}
|
||||
@ -286,7 +338,7 @@ static int omap_mux_dbg_board_show(struct seq_file *s, void *unused)
|
||||
|
||||
static int omap_mux_dbg_board_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
return single_open(file, omap_mux_dbg_board_show, &inode->i_private);
|
||||
return single_open(file, omap_mux_dbg_board_show, inode->i_private);
|
||||
}
|
||||
|
||||
static const struct file_operations omap_mux_dbg_board_fops = {
|
||||
@ -296,19 +348,43 @@ static const struct file_operations omap_mux_dbg_board_fops = {
|
||||
.release = single_release,
|
||||
};
|
||||
|
||||
static struct omap_mux_partition *omap_mux_get_partition(struct omap_mux *mux)
|
||||
{
|
||||
struct omap_mux_partition *partition;
|
||||
|
||||
list_for_each_entry(partition, &mux_partitions, node) {
|
||||
struct list_head *muxmodes = &partition->muxmodes;
|
||||
struct omap_mux_entry *e;
|
||||
|
||||
list_for_each_entry(e, muxmodes, node) {
|
||||
struct omap_mux *m = &e->mux;
|
||||
|
||||
if (m == mux)
|
||||
return partition;
|
||||
}
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static int omap_mux_dbg_signal_show(struct seq_file *s, void *unused)
|
||||
{
|
||||
struct omap_mux *m = s->private;
|
||||
struct omap_mux_partition *partition;
|
||||
const char *none = "NA";
|
||||
u16 val;
|
||||
int mode;
|
||||
|
||||
val = omap_mux_read(m->reg_offset);
|
||||
partition = omap_mux_get_partition(m);
|
||||
if (!partition)
|
||||
return 0;
|
||||
|
||||
val = omap_mux_read(partition, m->reg_offset);
|
||||
mode = val & OMAP_MUX_MODE7;
|
||||
|
||||
seq_printf(s, "name: %s.%s (0x%08lx/0x%03x = 0x%04x), b %s, t %s\n",
|
||||
seq_printf(s, "name: %s.%s (0x%08x/0x%03x = 0x%04x), b %s, t %s\n",
|
||||
m->muxnames[0], m->muxnames[mode],
|
||||
mux_phys + m->reg_offset, m->reg_offset, val,
|
||||
partition->phys + m->reg_offset, m->reg_offset, val,
|
||||
m->balls[0] ? m->balls[0] : none,
|
||||
m->balls[1] ? m->balls[1] : none);
|
||||
seq_printf(s, "mode: ");
|
||||
@ -330,14 +406,15 @@ static int omap_mux_dbg_signal_show(struct seq_file *s, void *unused)
|
||||
#define OMAP_MUX_MAX_ARG_CHAR 7
|
||||
|
||||
static ssize_t omap_mux_dbg_signal_write(struct file *file,
|
||||
const char __user *user_buf,
|
||||
size_t count, loff_t *ppos)
|
||||
const char __user *user_buf,
|
||||
size_t count, loff_t *ppos)
|
||||
{
|
||||
char buf[OMAP_MUX_MAX_ARG_CHAR];
|
||||
struct seq_file *seqf;
|
||||
struct omap_mux *m;
|
||||
unsigned long val;
|
||||
int buf_size, ret;
|
||||
struct omap_mux_partition *partition;
|
||||
|
||||
if (count > OMAP_MUX_MAX_ARG_CHAR)
|
||||
return -EINVAL;
|
||||
@ -358,7 +435,11 @@ static ssize_t omap_mux_dbg_signal_write(struct file *file,
|
||||
seqf = file->private_data;
|
||||
m = seqf->private;
|
||||
|
||||
omap_mux_write((u16)val, m->reg_offset);
|
||||
partition = omap_mux_get_partition(m);
|
||||
if (!partition)
|
||||
return -ENODEV;
|
||||
|
||||
omap_mux_write(partition, (u16)val, m->reg_offset);
|
||||
*ppos += count;
|
||||
|
||||
return count;
|
||||
@ -379,22 +460,38 @@ static const struct file_operations omap_mux_dbg_signal_fops = {
|
||||
|
||||
static struct dentry *mux_dbg_dir;
|
||||
|
||||
static void __init omap_mux_dbg_init(void)
|
||||
static void __init omap_mux_dbg_create_entry(
|
||||
struct omap_mux_partition *partition,
|
||||
struct dentry *mux_dbg_dir)
|
||||
{
|
||||
struct omap_mux_entry *e;
|
||||
|
||||
list_for_each_entry(e, &partition->muxmodes, node) {
|
||||
struct omap_mux *m = &e->mux;
|
||||
|
||||
(void)debugfs_create_file(m->muxnames[0], S_IWUGO, mux_dbg_dir,
|
||||
m, &omap_mux_dbg_signal_fops);
|
||||
}
|
||||
}
|
||||
|
||||
static void __init omap_mux_dbg_init(void)
|
||||
{
|
||||
struct omap_mux_partition *partition;
|
||||
static struct dentry *mux_dbg_board_dir;
|
||||
|
||||
mux_dbg_dir = debugfs_create_dir("omap_mux", NULL);
|
||||
if (!mux_dbg_dir)
|
||||
return;
|
||||
|
||||
(void)debugfs_create_file("board", S_IRUGO, mux_dbg_dir,
|
||||
NULL, &omap_mux_dbg_board_fops);
|
||||
mux_dbg_board_dir = debugfs_create_dir("board", mux_dbg_dir);
|
||||
if (!mux_dbg_board_dir)
|
||||
return;
|
||||
|
||||
list_for_each_entry(e, &muxmodes, node) {
|
||||
struct omap_mux *m = &e->mux;
|
||||
|
||||
(void)debugfs_create_file(m->muxnames[0], S_IWUGO, mux_dbg_dir,
|
||||
m, &omap_mux_dbg_signal_fops);
|
||||
list_for_each_entry(partition, &mux_partitions, node) {
|
||||
omap_mux_dbg_create_entry(partition, mux_dbg_dir);
|
||||
(void)debugfs_create_file(partition->name, S_IRUGO,
|
||||
mux_dbg_board_dir, partition,
|
||||
&omap_mux_dbg_board_fops);
|
||||
}
|
||||
}
|
||||
|
||||
@ -421,23 +518,25 @@ static void __init omap_mux_free_names(struct omap_mux *m)
|
||||
/* Free all data except for GPIO pins unless CONFIG_DEBUG_FS is set */
|
||||
static int __init omap_mux_late_init(void)
|
||||
{
|
||||
struct omap_mux_entry *e, *tmp;
|
||||
struct omap_mux_partition *partition;
|
||||
|
||||
list_for_each_entry_safe(e, tmp, &muxmodes, node) {
|
||||
struct omap_mux *m = &e->mux;
|
||||
u16 mode = omap_mux_read(m->reg_offset);
|
||||
list_for_each_entry(partition, &mux_partitions, node) {
|
||||
struct omap_mux_entry *e, *tmp;
|
||||
list_for_each_entry_safe(e, tmp, &partition->muxmodes, node) {
|
||||
struct omap_mux *m = &e->mux;
|
||||
u16 mode = omap_mux_read(partition, m->reg_offset);
|
||||
|
||||
if (OMAP_MODE_GPIO(mode))
|
||||
continue;
|
||||
if (OMAP_MODE_GPIO(mode))
|
||||
continue;
|
||||
|
||||
#ifndef CONFIG_DEBUG_FS
|
||||
mutex_lock(&muxmode_mutex);
|
||||
list_del(&e->node);
|
||||
mutex_unlock(&muxmode_mutex);
|
||||
omap_mux_free_names(m);
|
||||
kfree(m);
|
||||
mutex_lock(&muxmode_mutex);
|
||||
list_del(&e->node);
|
||||
mutex_unlock(&muxmode_mutex);
|
||||
omap_mux_free_names(m);
|
||||
kfree(m);
|
||||
#endif
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
omap_mux_dbg_init();
|
||||
@ -554,7 +653,7 @@ static void __init omap_mux_set_cmdline_signals(void)
|
||||
}
|
||||
|
||||
static int __init omap_mux_copy_names(struct omap_mux *src,
|
||||
struct omap_mux *dst)
|
||||
struct omap_mux *dst)
|
||||
{
|
||||
int i;
|
||||
|
||||
@ -592,51 +691,63 @@ free:
|
||||
|
||||
#endif /* CONFIG_OMAP_MUX */
|
||||
|
||||
static u16 omap_mux_get_by_gpio(int gpio)
|
||||
static struct omap_mux *omap_mux_get_by_gpio(
|
||||
struct omap_mux_partition *partition,
|
||||
int gpio)
|
||||
{
|
||||
struct omap_mux_entry *e;
|
||||
u16 offset = OMAP_MUX_TERMINATOR;
|
||||
struct omap_mux *ret = NULL;
|
||||
|
||||
list_for_each_entry(e, &muxmodes, node) {
|
||||
list_for_each_entry(e, &partition->muxmodes, node) {
|
||||
struct omap_mux *m = &e->mux;
|
||||
if (m->gpio == gpio) {
|
||||
offset = m->reg_offset;
|
||||
ret = m;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return offset;
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Needed for dynamic muxing of GPIO pins for off-idle */
|
||||
u16 omap_mux_get_gpio(int gpio)
|
||||
{
|
||||
u16 offset;
|
||||
struct omap_mux_partition *partition;
|
||||
struct omap_mux *m;
|
||||
|
||||
offset = omap_mux_get_by_gpio(gpio);
|
||||
if (offset == OMAP_MUX_TERMINATOR) {
|
||||
pr_err("mux: Could not get gpio%i\n", gpio);
|
||||
return offset;
|
||||
list_for_each_entry(partition, &mux_partitions, node) {
|
||||
m = omap_mux_get_by_gpio(partition, gpio);
|
||||
if (m)
|
||||
return omap_mux_read(partition, m->reg_offset);
|
||||
}
|
||||
|
||||
return omap_mux_read(offset);
|
||||
if (!m || m->reg_offset == OMAP_MUX_TERMINATOR)
|
||||
pr_err("mux: Could not get gpio%i\n", gpio);
|
||||
|
||||
return OMAP_MUX_TERMINATOR;
|
||||
}
|
||||
|
||||
/* Needed for dynamic muxing of GPIO pins for off-idle */
|
||||
void omap_mux_set_gpio(u16 val, int gpio)
|
||||
{
|
||||
u16 offset;
|
||||
struct omap_mux_partition *partition;
|
||||
struct omap_mux *m = NULL;
|
||||
|
||||
offset = omap_mux_get_by_gpio(gpio);
|
||||
if (offset == OMAP_MUX_TERMINATOR) {
|
||||
pr_err("mux: Could not set gpio%i\n", gpio);
|
||||
return;
|
||||
list_for_each_entry(partition, &mux_partitions, node) {
|
||||
m = omap_mux_get_by_gpio(partition, gpio);
|
||||
if (m) {
|
||||
omap_mux_write(partition, val, m->reg_offset);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
omap_mux_write(val, offset);
|
||||
if (!m || m->reg_offset == OMAP_MUX_TERMINATOR)
|
||||
pr_err("mux: Could not set gpio%i\n", gpio);
|
||||
}
|
||||
|
||||
static struct omap_mux * __init omap_mux_list_add(struct omap_mux *src)
|
||||
static struct omap_mux * __init omap_mux_list_add(
|
||||
struct omap_mux_partition *partition,
|
||||
struct omap_mux *src)
|
||||
{
|
||||
struct omap_mux_entry *entry;
|
||||
struct omap_mux *m;
|
||||
@ -656,7 +767,7 @@ static struct omap_mux * __init omap_mux_list_add(struct omap_mux *src)
|
||||
#endif
|
||||
|
||||
mutex_lock(&muxmode_mutex);
|
||||
list_add_tail(&entry->node, &muxmodes);
|
||||
list_add_tail(&entry->node, &partition->muxmodes);
|
||||
mutex_unlock(&muxmode_mutex);
|
||||
|
||||
return m;
|
||||
@ -667,7 +778,8 @@ static struct omap_mux * __init omap_mux_list_add(struct omap_mux *src)
|
||||
* the GPIO to mux offset mapping that is needed for dynamic muxing
|
||||
* of GPIO pins for off-idle.
|
||||
*/
|
||||
static void __init omap_mux_init_list(struct omap_mux *superset)
|
||||
static void __init omap_mux_init_list(struct omap_mux_partition *partition,
|
||||
struct omap_mux *superset)
|
||||
{
|
||||
while (superset->reg_offset != OMAP_MUX_TERMINATOR) {
|
||||
struct omap_mux *entry;
|
||||
@ -679,13 +791,14 @@ static void __init omap_mux_init_list(struct omap_mux *superset)
|
||||
}
|
||||
#else
|
||||
/* Skip pins that are not muxed as GPIO by bootloader */
|
||||
if (!OMAP_MODE_GPIO(omap_mux_read(superset->reg_offset))) {
|
||||
if (!OMAP_MODE_GPIO(omap_mux_read(partition,
|
||||
superset->reg_offset))) {
|
||||
superset++;
|
||||
continue;
|
||||
}
|
||||
#endif
|
||||
|
||||
entry = omap_mux_list_add(superset);
|
||||
entry = omap_mux_list_add(partition, superset);
|
||||
if (!entry) {
|
||||
pr_err("mux: Could not add entry\n");
|
||||
return;
|
||||
@ -706,10 +819,11 @@ static void omap_mux_init_package(struct omap_mux *superset,
|
||||
omap_mux_package_init_balls(package_balls, superset);
|
||||
}
|
||||
|
||||
static void omap_mux_init_signals(struct omap_board_mux *board_mux)
|
||||
static void omap_mux_init_signals(struct omap_mux_partition *partition,
|
||||
struct omap_board_mux *board_mux)
|
||||
{
|
||||
omap_mux_set_cmdline_signals();
|
||||
omap_mux_write_array(board_mux);
|
||||
omap_mux_write_array(partition, board_mux);
|
||||
}
|
||||
|
||||
#else
|
||||
@ -720,34 +834,49 @@ static void omap_mux_init_package(struct omap_mux *superset,
|
||||
{
|
||||
}
|
||||
|
||||
static void omap_mux_init_signals(struct omap_board_mux *board_mux)
|
||||
static void omap_mux_init_signals(struct omap_mux_partition *partition,
|
||||
struct omap_board_mux *board_mux)
|
||||
{
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
int __init omap_mux_init(u32 mux_pbase, u32 mux_size,
|
||||
struct omap_mux *superset,
|
||||
struct omap_mux *package_subset,
|
||||
struct omap_board_mux *board_mux,
|
||||
struct omap_ball *package_balls)
|
||||
{
|
||||
if (mux_base)
|
||||
return -EBUSY;
|
||||
static u32 mux_partitions_cnt;
|
||||
|
||||
mux_phys = mux_pbase;
|
||||
mux_base = ioremap(mux_pbase, mux_size);
|
||||
if (!mux_base) {
|
||||
pr_err("mux: Could not ioremap\n");
|
||||
int __init omap_mux_init(const char *name, u32 flags,
|
||||
u32 mux_pbase, u32 mux_size,
|
||||
struct omap_mux *superset,
|
||||
struct omap_mux *package_subset,
|
||||
struct omap_board_mux *board_mux,
|
||||
struct omap_ball *package_balls)
|
||||
{
|
||||
struct omap_mux_partition *partition;
|
||||
|
||||
partition = kzalloc(sizeof(struct omap_mux_partition), GFP_KERNEL);
|
||||
if (!partition)
|
||||
return -ENOMEM;
|
||||
|
||||
partition->name = name;
|
||||
partition->flags = flags;
|
||||
partition->size = mux_size;
|
||||
partition->phys = mux_pbase;
|
||||
partition->base = ioremap(mux_pbase, mux_size);
|
||||
if (!partition->base) {
|
||||
pr_err("mux: Could not ioremap mux partition at 0x%08x\n",
|
||||
partition->phys);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
if (cpu_is_omap24xx())
|
||||
omap_mux_flags = MUXABLE_GPIO_MODE3;
|
||||
INIT_LIST_HEAD(&partition->muxmodes);
|
||||
|
||||
list_add_tail(&partition->node, &mux_partitions);
|
||||
mux_partitions_cnt++;
|
||||
pr_info("MUX: Add partition: #%d: %s, flags: %x\n",
|
||||
mux_partitions_cnt, partition->name, partition->flags);
|
||||
|
||||
omap_mux_init_package(superset, package_subset, package_balls);
|
||||
omap_mux_init_list(superset);
|
||||
omap_mux_init_signals(board_mux);
|
||||
omap_mux_init_list(partition, superset);
|
||||
omap_mux_init_signals(partition, board_mux);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
/*
|
||||
* Copyright (C) 2009 Nokia
|
||||
* Copyright (C) 2009 Texas Instruments
|
||||
* Copyright (C) 2009-2010 Texas Instruments
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2 as
|
||||
@ -56,7 +56,7 @@
|
||||
|
||||
#define OMAP_MODE_GPIO(x) (((x) & OMAP_MUX_MODE7) == OMAP_MUX_MODE4)
|
||||
|
||||
/* Flags for omap_mux_init */
|
||||
/* Flags for omapX_mux_init */
|
||||
#define OMAP_PACKAGE_MASK 0xffff
|
||||
#define OMAP_PACKAGE_CBP 6 /* 515-pin 0.40 0.50 */
|
||||
#define OMAP_PACKAGE_CUS 5 /* 423-pin 0.65 */
|
||||
@ -66,14 +66,47 @@
|
||||
#define OMAP_PACKAGE_ZAF 1 /* 2420 447-pin SIP */
|
||||
|
||||
|
||||
#define OMAP_MUX_NR_MODES 8 /* Available modes */
|
||||
#define OMAP_MUX_NR_SIDES 2 /* Bottom & top */
|
||||
#define OMAP_MUX_NR_MODES 8 /* Available modes */
|
||||
#define OMAP_MUX_NR_SIDES 2 /* Bottom & top */
|
||||
|
||||
/*
|
||||
* omap_mux_init flags definition:
|
||||
*
|
||||
* OMAP_MUX_REG_8BIT: Ensure that access to padconf is done in 8 bits.
|
||||
* The default value is 16 bits.
|
||||
* OMAP_MUX_GPIO_IN_MODE3: The GPIO is selected in mode3.
|
||||
* The default is mode4.
|
||||
*/
|
||||
#define OMAP_MUX_REG_8BIT (1 << 0)
|
||||
#define OMAP_MUX_GPIO_IN_MODE3 (1 << 1)
|
||||
|
||||
/**
|
||||
* struct mux_partition - contain partition related information
|
||||
* @name: name of the current partition
|
||||
* @flags: flags specific to this partition
|
||||
* @phys: physical address
|
||||
* @size: partition size
|
||||
* @base: virtual address after ioremap
|
||||
* @muxmodes: list of nodes that belong to a partition
|
||||
* @node: list node for the partitions linked list
|
||||
*/
|
||||
struct omap_mux_partition {
|
||||
const char *name;
|
||||
u32 flags;
|
||||
u32 phys;
|
||||
u32 size;
|
||||
void __iomem *base;
|
||||
struct list_head muxmodes;
|
||||
struct list_head node;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct omap_mux - data for omap mux register offset and it's value
|
||||
* @reg_offset: mux register offset from the mux base
|
||||
* @gpio: GPIO number
|
||||
* @muxnames: available signal modes for a ball
|
||||
* @balls: available balls on the package
|
||||
* @partition: mux partition
|
||||
*/
|
||||
struct omap_mux {
|
||||
u16 reg_offset;
|
||||
@ -150,29 +183,40 @@ u16 omap_mux_get_gpio(int gpio);
|
||||
*/
|
||||
void omap_mux_set_gpio(u16 val, int gpio);
|
||||
|
||||
/**
|
||||
* omap_mux_get() - get a mux partition by name
|
||||
* @name: Name of the mux partition
|
||||
*
|
||||
*/
|
||||
struct omap_mux_partition *omap_mux_get(const char *name);
|
||||
|
||||
/**
|
||||
* omap_mux_read() - read mux register
|
||||
* @partition: Mux partition
|
||||
* @mux_offset: Offset of the mux register
|
||||
*
|
||||
*/
|
||||
u16 omap_mux_read(u16 mux_offset);
|
||||
u16 omap_mux_read(struct omap_mux_partition *p, u16 mux_offset);
|
||||
|
||||
/**
|
||||
* omap_mux_write() - write mux register
|
||||
* @partition: Mux partition
|
||||
* @val: New mux register value
|
||||
* @mux_offset: Offset of the mux register
|
||||
*
|
||||
* This should be only needed for dynamic remuxing of non-gpio signals.
|
||||
*/
|
||||
void omap_mux_write(u16 val, u16 mux_offset);
|
||||
void omap_mux_write(struct omap_mux_partition *p, u16 val, u16 mux_offset);
|
||||
|
||||
/**
|
||||
* omap_mux_write_array() - write an array of mux registers
|
||||
* @partition: Mux partition
|
||||
* @board_mux: Array of mux registers terminated by MAP_MUX_TERMINATOR
|
||||
*
|
||||
* This should be only needed for dynamic remuxing of non-gpio signals.
|
||||
*/
|
||||
void omap_mux_write_array(struct omap_board_mux *board_mux);
|
||||
void omap_mux_write_array(struct omap_mux_partition *p,
|
||||
struct omap_board_mux *board_mux);
|
||||
|
||||
/**
|
||||
* omap2420_mux_init() - initialize mux system with board specific set
|
||||
@ -198,8 +242,10 @@ int omap3_mux_init(struct omap_board_mux *board_mux, int flags);
|
||||
/**
|
||||
* omap_mux_init - private mux init function, do not call
|
||||
*/
|
||||
int omap_mux_init(u32 mux_pbase, u32 mux_size,
|
||||
struct omap_mux *superset,
|
||||
struct omap_mux *package_subset,
|
||||
struct omap_board_mux *board_mux,
|
||||
struct omap_ball *package_balls);
|
||||
int omap_mux_init(const char *name, u32 flags,
|
||||
u32 mux_pbase, u32 mux_size,
|
||||
struct omap_mux *superset,
|
||||
struct omap_mux *package_subset,
|
||||
struct omap_board_mux *board_mux,
|
||||
struct omap_ball *package_balls);
|
||||
|
||||
|
||||
@ -681,8 +681,9 @@ int __init omap2420_mux_init(struct omap_board_mux *board_subset, int flags)
|
||||
pr_warning("mux: No ball data available for omap2420 package\n");
|
||||
}
|
||||
|
||||
return omap_mux_init(OMAP2420_CONTROL_PADCONF_MUX_PBASE,
|
||||
return omap_mux_init("core", OMAP_MUX_REG_8BIT | OMAP_MUX_GPIO_IN_MODE3,
|
||||
OMAP2420_CONTROL_PADCONF_MUX_PBASE,
|
||||
OMAP2420_CONTROL_PADCONF_MUX_SIZE,
|
||||
omap2420_muxmodes, NULL, board_subset,
|
||||
package_balls);
|
||||
omap2420_muxmodes, NULL, board_subset,
|
||||
package_balls);
|
||||
}
|
||||
|
||||
@ -784,8 +784,9 @@ int __init omap2430_mux_init(struct omap_board_mux *board_subset, int flags)
|
||||
pr_warning("mux: No ball data available for omap2420 package\n");
|
||||
}
|
||||
|
||||
return omap_mux_init(OMAP2430_CONTROL_PADCONF_MUX_PBASE,
|
||||
return omap_mux_init("core", OMAP_MUX_REG_8BIT | OMAP_MUX_GPIO_IN_MODE3,
|
||||
OMAP2430_CONTROL_PADCONF_MUX_PBASE,
|
||||
OMAP2430_CONTROL_PADCONF_MUX_SIZE,
|
||||
omap2430_muxmodes, NULL, board_subset,
|
||||
package_balls);
|
||||
omap2430_muxmodes, NULL, board_subset,
|
||||
package_balls);
|
||||
}
|
||||
|
||||
@ -2053,8 +2053,9 @@ int __init omap3_mux_init(struct omap_board_mux *board_subset, int flags)
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return omap_mux_init(OMAP3_CONTROL_PADCONF_MUX_PBASE,
|
||||
return omap_mux_init("core", 0,
|
||||
OMAP3_CONTROL_PADCONF_MUX_PBASE,
|
||||
OMAP3_CONTROL_PADCONF_MUX_SIZE,
|
||||
omap3_muxmodes, package_subset, board_subset,
|
||||
package_balls);
|
||||
omap3_muxmodes, package_subset, board_subset,
|
||||
package_balls);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user