From mboxrd@z Thu Jan 1 00:00:00 1970 From: Guenter Roeck Subject: [PATCH v5 09/48] mfd: palmas: Register with kernel power-off handler Date: Thu, 6 Nov 2014 08:42:53 -0800 Message-ID: <1415292213-28652-10-git-send-email-linux@roeck-us.net> References: <1415292213-28652-1-git-send-email-linux@roeck-us.net> Return-path: In-Reply-To: <1415292213-28652-1-git-send-email-linux@roeck-us.net> Sender: linux-omap-owner@vger.kernel.org To: linux-kernel@vger.kernel.org Cc: linux-pm@vger.kernel.org, Guenter Roeck , Samuel Ortiz , Lee Jones , linux-omap@vger.kernel.org List-Id: linux-pm@vger.kernel.org Register with kernel power-off handler instead of setting pm_power_off directly. Register with low priority to reflect that the original code only sets pm_power_off if it was not already set. Cc: Samuel Ortiz Cc: Lee Jones Cc: linux-omap@vger.kernel.org Acked-by: Lee Jones Signed-off-by: Guenter Roeck --- v5: - Rebase to v3.18-rc3 v4: - Do not use notifiers but internal functions and data structures to manage the list of power-off handlers. Drop unused parameters from callbacks, and make the power-off function type void v3: - Replace poweroff in all newly introduced variables and in text with power_off or power-off as appropriate - Replace POWEROFF_PRIORITY_xxx with POWER_OFF_PRIORITY_xxx v2: - Use define to specify poweroff handler priority - Use devm_register_power_off_handler - Use dev_warn instead of dev_err drivers/mfd/palmas.c | 28 ++++++++++++++-------------- include/linux/mfd/palmas.h | 3 +++ 2 files changed, 17 insertions(+), 14 deletions(-) diff --git a/drivers/mfd/palmas.c b/drivers/mfd/palmas.c index 28cb048..60f81ed 100644 --- a/drivers/mfd/palmas.c +++ b/drivers/mfd/palmas.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include #include @@ -425,20 +426,17 @@ static void palmas_dt_to_pdata(struct i2c_client *i2c, "ti,system-power-controller"); } -static struct palmas *palmas_dev; -static void palmas_power_off(void) +static void palmas_power_off(struct power_off_handler_block *this) { + struct palmas *palmas = container_of(this, struct palmas, power_off_hb); unsigned int addr; int ret, slave; - if (!palmas_dev) - return; - slave = PALMAS_BASE_TO_SLAVE(PALMAS_PMU_CONTROL_BASE); addr = PALMAS_BASE_TO_REG(PALMAS_PMU_CONTROL_BASE, PALMAS_DEV_CTRL); ret = regmap_update_bits( - palmas_dev->regmap[slave], + palmas->regmap[slave], addr, PALMAS_DEV_CTRL_DEV_ON, 0); @@ -668,9 +666,16 @@ no_irq: ret = of_platform_populate(node, NULL, NULL, &i2c->dev); if (ret < 0) { goto err_irq; - } else if (pdata->pm_off && !pm_power_off) { - palmas_dev = palmas; - pm_power_off = palmas_power_off; + } else if (pdata->pm_off) { + int ret2; + + palmas->power_off_hb.handler = palmas_power_off; + palmas->power_off_hb.priority = POWER_OFF_PRIORITY_LOW; + ret2 = devm_register_power_off_handler(palmas->dev, + &palmas->power_off_hb); + if (ret2) + dev_warn(palmas->dev, + "Failed to register power-off handler"); } } @@ -698,11 +703,6 @@ static int palmas_i2c_remove(struct i2c_client *i2c) i2c_unregister_device(palmas->i2c_clients[i]); } - if (palmas == palmas_dev) { - pm_power_off = NULL; - palmas_dev = NULL; - } - return 0; } diff --git a/include/linux/mfd/palmas.h b/include/linux/mfd/palmas.h index fb0390a..7a43f7b 100644 --- a/include/linux/mfd/palmas.h +++ b/include/linux/mfd/palmas.h @@ -18,6 +18,7 @@ #include #include +#include #include #include #include @@ -68,6 +69,8 @@ struct palmas { struct i2c_client *i2c_clients[PALMAS_NUM_CLIENTS]; struct regmap *regmap[PALMAS_NUM_CLIENTS]; + struct power_off_handler_block power_off_hb; + /* Stored chip id */ int id; -- 1.9.1