diff options
| author | Philippe Langlais <philippe.langlais@stericsson.com> | 2011-10-12 15:37:42 +0200 |
|---|---|---|
| committer | Philippe Langlais <philippe.langlais@stericsson.com> | 2012-05-22 10:59:47 +0200 |
| commit | fe19483d1aa037de30f95447342f5cd94cf295ec (patch) | |
| tree | a9b67a76c64d2891b0b9e855333923d1e31d151e /drivers/mfd | |
| parent | 195c54954f4bf82c1b7aad3adb54015941daaf65 (diff) | |
ab5500: provide a driver for power off
ST-Ericsson Linux next: -
ST-Ericsson ID: WP257121
ST-Ericsson FOSS-OUT ID: Trivial
Change-Id: I3fcc5c9f1d88c433edc3698da739ecdd11e51711
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/22352
Reviewed-by: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/Makefile | 2 | ||||
| -rw-r--r-- | drivers/mfd/ab5500-power.c | 72 |
2 files changed, 73 insertions, 1 deletions
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 2d4adfd0ee7..9bce327bf6e 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -2,7 +2,7 @@ # Makefile for multifunction miscellaneous devices # -obj-$(CONFIG_AB5500_CORE) += ab5500-core.o +obj-$(CONFIG_AB5500_CORE) += ab5500-core.o ab5500-power.o 88pm860x-objs := 88pm860x-core.o 88pm860x-i2c.o obj-$(CONFIG_MFD_88PM860X) += 88pm860x.o obj-$(CONFIG_MFD_SM501) += sm501.o diff --git a/drivers/mfd/ab5500-power.c b/drivers/mfd/ab5500-power.c new file mode 100644 index 00000000000..5bf6a4c5e97 --- /dev/null +++ b/drivers/mfd/ab5500-power.c @@ -0,0 +1,72 @@ +/* + * Copyright (C) ST-Ericsson SA 2011 + * + * License terms: GNU General Public License (GPL) version 2 + */ + +#include <linux/kernel.h> +#include <linux/signal.h> +#include <linux/init.h> +#include <linux/platform_device.h> + +#include <linux/mfd/abx500.h> +#include <linux/mfd/abx500/ab5500.h> + +static struct device *dev; + +#define AB5500_SYSPOR_CONTROL 0x30 + +static void ab5500_power_off(void) +{ + sigset_t old; + sigset_t all; + + sigfillset(&all); + + if (!sigprocmask(SIG_BLOCK, &all, &old)) { + /* Clear dbb_on */ + int ret = abx500_set(dev, AB5500_BANK_STARTUP, + AB5500_SYSPOR_CONTROL, 0); + WARN_ON(ret); + } +} + +static int __devinit ab5500_power_probe(struct platform_device *pdev) +{ + struct ab5500_platform_data *plat = dev_get_platdata(pdev->dev.parent); + + if (!plat->pm_power_off) + return -ENODEV; + + dev = &pdev->dev; + pm_power_off = ab5500_power_off; + + return 0; +} + +static int __devexit ab5500_power_remove(struct platform_device *pdev) +{ + pm_power_off = NULL; + dev = NULL; + + return 0; +} + +static struct platform_driver ab5500_power_driver = { + .driver = { + .name = "ab5500-power", + .owner = THIS_MODULE, + }, + .probe = ab5500_power_probe, + .remove = __devexit_p(ab5500_power_remove), +}; + +static int __init ab8500_sysctrl_init(void) +{ + return platform_driver_register(&ab5500_power_driver); +} + +subsys_initcall(ab8500_sysctrl_init); + +MODULE_DESCRIPTION("AB5500 power driver"); +MODULE_LICENSE("GPL v2"); |