From mboxrd@z Thu Jan 1 00:00:00 1970 From: linux@roeck-us.net (Guenter Roeck) Date: Mon, 6 Oct 2014 22:28:18 -0700 Subject: [PATCH 16/44] mfd: tps6586x: Register with kernel poweroff handler In-Reply-To: <1412659726-29957-1-git-send-email-linux@roeck-us.net> References: <1412659726-29957-1-git-send-email-linux@roeck-us.net> Message-ID: <1412659726-29957-17-git-send-email-linux@roeck-us.net> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Register with kernel poweroff handler instead of setting pm_power_off directly. Register with a low priority value of 64 to reflect that the original code only sets pm_power_off if it was not already set. Cc: Samuel Ortiz Cc: Lee Jones Signed-off-by: Guenter Roeck --- drivers/mfd/tps6586x.c | 31 +++++++++++++++++++++++-------- 1 file changed, 23 insertions(+), 8 deletions(-) diff --git a/drivers/mfd/tps6586x.c b/drivers/mfd/tps6586x.c index 8e1dbc4..bc14509 100644 --- a/drivers/mfd/tps6586x.c +++ b/drivers/mfd/tps6586x.c @@ -21,10 +21,12 @@ #include #include #include +#include #include #include #include #include +#include #include #include @@ -133,6 +135,8 @@ struct tps6586x { u32 irq_en; u8 mask_reg[5]; struct irq_domain *irq_domain; + + struct notifier_block poweroff_nb; }; static inline struct tps6586x *dev_to_tps6586x(struct device *dev) @@ -472,13 +476,18 @@ static const struct regmap_config tps6586x_regmap_config = { .cache_type = REGCACHE_RBTREE, }; -static struct device *tps6586x_dev; -static void tps6586x_power_off(void) +static int tps6586x_power_off(struct notifier_block *this, + unsigned long unused1, void *unused2) { - if (tps6586x_clr_bits(tps6586x_dev, TPS6586X_SUPPLYENE, EXITSLREQ_BIT)) - return; + struct tps6586x *tps6586x = container_of(this, struct tps6586x, + poweroff_nb); + + if (tps6586x_clr_bits(tps6586x->dev, TPS6586X_SUPPLYENE, EXITSLREQ_BIT)) + return NOTIFY_DONE; - tps6586x_set_bits(tps6586x_dev, TPS6586X_SUPPLYENE, SLEEP_MODE_BIT); + tps6586x_set_bits(tps6586x->dev, TPS6586X_SUPPLYENE, SLEEP_MODE_BIT); + + return NOTIFY_DONE; } static void tps6586x_print_version(struct i2c_client *client, int version) @@ -575,9 +584,13 @@ static int tps6586x_i2c_probe(struct i2c_client *client, goto err_add_devs; } - if (pdata->pm_off && !pm_power_off) { - tps6586x_dev = &client->dev; - pm_power_off = tps6586x_power_off; + if (pdata->pm_off) { + tps6586x->poweroff_nb.notifier_call = tps6586x_power_off; + tps6586x->poweroff_nb.priority = 64; + ret = register_poweroff_handler(&tps6586x->poweroff_nb); + if (ret) + dev_err(&client->dev, + "failed to register poweroff handler\n"); } return 0; @@ -594,6 +607,8 @@ static int tps6586x_i2c_remove(struct i2c_client *client) { struct tps6586x *tps6586x = i2c_get_clientdata(client); + unregister_poweroff_handler(&tps6586x->poweroff_nb); + tps6586x_remove_subdevs(tps6586x); mfd_remove_devices(tps6586x->dev); if (client->irq) -- 1.9.1