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| author | Santosh Shilimkar <santosh.shilimkar@ti.com> | 2011-07-13 18:30:49 -0700 |
|---|---|---|
| committer | Ziyann <jaraidaniel@gmail.com> | 2014-10-01 13:00:11 +0200 |
| commit | dd200658bfa9157a4936c0496aecfcbb2a773fdb (patch) | |
| tree | b22972bfcfd7861dc4e51af0aca557a1b7d2ecb6 /drivers/mfd | |
| parent | f40423c4b2a10a9eea8372a506356c5ae11e2014 (diff) | |
| download | kernel_samsung_tuna-dd200658bfa9157a4936c0496aecfcbb2a773fdb.tar.gz kernel_samsung_tuna-dd200658bfa9157a4936c0496aecfcbb2a773fdb.tar.bz2 kernel_samsung_tuna-dd200658bfa9157a4936c0496aecfcbb2a773fdb.zip | |
mfd: twl: Register suspend/resume hooks for IRQ wakeup capability.
TWL40XX and TWL60XX devices has an interrupt line which is connected to
application processor like OMAP. Since these devices supports many features
like MMC card detect, USB cable detect, RTC interrupt etc which needs to
wakeup application processor on these events.
So provide the i2c client driver suspend hooks so that wakeup capability
can be enabled on these events using the common IRQ line.
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Axel Haslam <axelhaslam@ti.com>
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/twl-core.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c index 9ab40b5921a..223112fe906 100644 --- a/drivers/mfd/twl-core.c +++ b/drivers/mfd/twl-core.c @@ -33,6 +33,7 @@ #include <linux/platform_device.h> #include <linux/clk.h> #include <linux/err.h> +#include <linux/interrupt.h> #include <linux/regulator/machine.h> @@ -1247,6 +1248,21 @@ int twl4030_init_chip_irq(const char *chip); int twl6030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end); int twl6030_exit_irq(void); +#ifdef CONFIG_PM +static int twl_suspend(struct i2c_client *client, pm_message_t mesg) +{ + return irq_set_irq_wake(client->irq, 1); +} + +static int twl_resume(struct i2c_client *client) +{ + return irq_set_irq_wake(client->irq, 0); +} +#else +#define twl_suspend NULL +#define twl_resume NULL +#endif + static int twl_remove(struct i2c_client *client) { unsigned i; @@ -1402,6 +1418,8 @@ static struct i2c_driver twl_driver = { .id_table = twl_ids, .probe = twl_probe, .remove = twl_remove, + .suspend = twl_suspend, + .resume = twl_resume, }; static int __init twl_init(void) |