diff options
Diffstat (limited to 'extras/recipes-kernel/linux/linux-omap-2.6.39/sakoman/0018-Add-power-off-support-for-the-TWL4030-companion.patch')
| -rw-r--r-- | extras/recipes-kernel/linux/linux-omap-2.6.39/sakoman/0018-Add-power-off-support-for-the-TWL4030-companion.patch | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/extras/recipes-kernel/linux/linux-omap-2.6.39/sakoman/0018-Add-power-off-support-for-the-TWL4030-companion.patch b/extras/recipes-kernel/linux/linux-omap-2.6.39/sakoman/0018-Add-power-off-support-for-the-TWL4030-companion.patch new file mode 100644 index 00000000..30860275 --- /dev/null +++ b/extras/recipes-kernel/linux/linux-omap-2.6.39/sakoman/0018-Add-power-off-support-for-the-TWL4030-companion.patch @@ -0,0 +1,103 @@ +From 8c257a6e7460ceb8c899980f7dad701ceb619adc Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Bernhard=20W=C3=B6rndl-Aichriedler?= <bwa@xdevelop.at> +Date: Sat, 15 May 2010 16:34:05 +0200 +Subject: [PATCH 18/32] Add power-off support for the TWL4030 companion + +This patch adds support for the power-off on shutdown feature of the TWL4030 +--- + drivers/mfd/Kconfig | 6 ++++++ + drivers/mfd/twl-core.c | 40 ++++++++++++++++++++++++++++++++++++++++ + 2 files changed, 46 insertions(+), 0 deletions(-) + +diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig +index 3ed3ff0..fe2370a 100644 +--- a/drivers/mfd/Kconfig ++++ b/drivers/mfd/Kconfig +@@ -210,6 +210,12 @@ config TWL4030_CODEC + select MFD_CORE + default n + ++config TWL4030_POWEROFF ++ bool "TWL4030 Allow power-off on shutdown" ++ depends on TWL4030_CORE ++ help ++ Enables the CPU to power-off the system on shutdown ++ + config TWL6030_PWM + tristate "TWL6030 PWM (Pulse Width Modulator) Support" + depends on TWL4030_CORE +diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c +index 960b5be..8804550 100644 +--- a/drivers/mfd/twl-core.c ++++ b/drivers/mfd/twl-core.c +@@ -122,6 +122,12 @@ + #define twl_has_bci() false + #endif + ++#if defined (CONFIG_TWL4030_POWEROFF) ++#define twl_has_poweroff() true ++#else ++#define twl_has_poweroff() false ++#endif ++ + /* Triton Core internal information (BEGIN) */ + + /* Last - for index max*/ +@@ -224,6 +230,10 @@ + #define TWL5031 BIT(2) /* twl5031 has different registers */ + #define TWL6030_CLASS BIT(3) /* TWL6030 class */ + ++/* for pm_power_off */ ++#define PWR_P1_SW_EVENTS 0x10 ++#define PWR_DEVOFF (1 << 0) ++ + /*----------------------------------------------------------------------*/ + + /* is driver active, bound to a chip? */ +@@ -1006,6 +1016,30 @@ static int twl_remove(struct i2c_client *client) + return 0; + } + ++static void twl_poweroff(void) ++{ ++ int err; ++ u8 val; ++ ++ err = twl_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &val, ++ PWR_P1_SW_EVENTS); ++ if (err) { ++ pr_err("%s: i2c error %d while reading TWL4030" ++ "PM_MASTER P1_SW_EVENTS\n", ++ DRIVER_NAME, err); ++ return; ++ } ++ ++ val |= PWR_DEVOFF; ++ ++ err = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, val, ++ PWR_P1_SW_EVENTS); ++ if (err) ++ pr_err("%s: i2c error %d while writing TWL4030" ++ "PM_MASTER P1_SW_EVENTS\n", ++ DRIVER_NAME, err); ++} ++ + /* NOTE: this driver only handles a single twl4030/tps659x0 chip */ + static int __devinit + twl_probe(struct i2c_client *client, const struct i2c_device_id *id) +@@ -1093,6 +1127,12 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id) + twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1); + } + ++ if(twl_has_poweroff()) ++ { ++ /* initialize pm_power_off routine */ ++ pm_power_off = twl_poweroff; ++ } ++ + status = add_children(pdata, id->driver_data); + fail: + if (status < 0) +-- +1.6.6.1 + |