Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752001AbaKFQo0 (ORCPT ); Thu, 6 Nov 2014 11:44:26 -0500 Received: from bh-25.webhostbox.net ([208.91.199.152]:56194 "EHLO bh-25.webhostbox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751904AbaKFQoO (ORCPT ); Thu, 6 Nov 2014 11:44:14 -0500 From: Guenter Roeck To: linux-kernel@vger.kernel.org Cc: linux-pm@vger.kernel.org, Guenter Roeck , Samuel Ortiz , Lee Jones , linux-omap@vger.kernel.org Subject: [PATCH v5 14/48] mfd: tps80031: Register with kernel power-off handler Date: Thu, 6 Nov 2014 08:42:58 -0800 Message-Id: <1415292213-28652-15-git-send-email-linux@roeck-us.net> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1415292213-28652-1-git-send-email-linux@roeck-us.net> References: <1415292213-28652-1-git-send-email-linux@roeck-us.net> X-Authenticated_sender: guenter@roeck-us.net X-OutGoing-Spam-Status: No, score=-1.0 X-CTCH-PVer: 0000001 X-CTCH-Spam: Unknown X-CTCH-VOD: Unknown X-CTCH-Flags: 0 X-CTCH-RefID: str=0001.0A020209.545BA55E.0080,ss=1,re=0.001,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0 X-CTCH-Score: 0.001 X-CTCH-ScoreCust: 0.000 X-CTCH-Rules: C_4847, X-CTCH-SenderID: linux@roeck-us.net X-CTCH-SenderID-Flags: 0 X-CTCH-SenderID-TotalMessages: 85 X-CTCH-SenderID-TotalSpam: 0 X-CTCH-SenderID-TotalSuspected: 0 X-CTCH-SenderID-TotalConfirmed: 0 X-CTCH-SenderID-TotalBulk: 0 X-CTCH-SenderID-TotalVirus: 0 X-CTCH-SenderID-TotalRecipients: 0 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - bh-25.webhostbox.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - roeck-us.net X-Get-Message-Sender-Via: bh-25.webhostbox.net: mailgid no entry from get_relayhosts_entry X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@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 dev_warn instead of dev_err drivers/mfd/tps80031.c | 27 +++++++++++++++------------ include/linux/mfd/tps80031.h | 2 ++ 2 files changed, 17 insertions(+), 12 deletions(-) diff --git a/drivers/mfd/tps80031.c b/drivers/mfd/tps80031.c index ed6c5b0..996fd7c 100644 --- a/drivers/mfd/tps80031.c +++ b/drivers/mfd/tps80031.c @@ -147,7 +147,6 @@ static const struct tps80031_pupd_data tps80031_pupds[] = { [TPS80031_CTLI2C_SCL] = PUPD_DATA(4, 0, BIT(2)), [TPS80031_CTLI2C_SDA] = PUPD_DATA(4, 0, BIT(3)), }; -static struct tps80031 *tps80031_power_off_dev; int tps80031_ext_power_req_config(struct device *dev, unsigned long ext_ctrl_flag, int preq_bit, @@ -209,11 +208,14 @@ int tps80031_ext_power_req_config(struct device *dev, } EXPORT_SYMBOL_GPL(tps80031_ext_power_req_config); -static void tps80031_power_off(void) +static void tps80031_power_off(struct power_off_handler_block *this) { - dev_info(tps80031_power_off_dev->dev, "switching off PMU\n"); - tps80031_write(tps80031_power_off_dev->dev, TPS80031_SLAVE_ID1, - TPS80031_PHOENIX_DEV_ON, TPS80031_DEVOFF); + struct tps80031 *tps80031 = container_of(this, struct tps80031, + power_off_hb); + + dev_info(tps80031->dev, "switching off PMU\n"); + tps80031_write(tps80031->dev, TPS80031_SLAVE_ID1, + TPS80031_PHOENIX_DEV_ON, TPS80031_DEVOFF); } static void tps80031_pupd_init(struct tps80031 *tps80031, @@ -501,9 +503,13 @@ static int tps80031_probe(struct i2c_client *client, goto fail_mfd_add; } - if (pdata->use_power_off && !pm_power_off) { - tps80031_power_off_dev = tps80031; - pm_power_off = tps80031_power_off; + if (pdata->use_power_off) { + tps80031->power_off_hb.handler = tps80031_power_off; + tps80031->power_off_hb.priority = POWER_OFF_PRIORITY_LOW; + ret = register_power_off_handler(&tps80031->power_off_hb); + if (ret) + dev_warn(&client->dev, + "Failed to register power-off handler\n"); } return 0; @@ -523,10 +529,7 @@ static int tps80031_remove(struct i2c_client *client) struct tps80031 *tps80031 = i2c_get_clientdata(client); int i; - if (tps80031_power_off_dev == tps80031) { - tps80031_power_off_dev = NULL; - pm_power_off = NULL; - } + unregister_power_off_handler(&tps80031->power_off_hb); mfd_remove_devices(tps80031->dev); diff --git a/include/linux/mfd/tps80031.h b/include/linux/mfd/tps80031.h index 2c75c9c..5716077 100644 --- a/include/linux/mfd/tps80031.h +++ b/include/linux/mfd/tps80031.h @@ -24,6 +24,7 @@ #define __LINUX_MFD_TPS80031_H #include +#include #include /* Pull-ups/Pull-downs */ @@ -513,6 +514,7 @@ struct tps80031 { struct i2c_client *clients[TPS80031_NUM_SLAVES]; struct regmap *regmap[TPS80031_NUM_SLAVES]; struct regmap_irq_chip_data *irq_data; + struct power_off_handler_block power_off_hb; }; struct tps80031_pupd_init_data { -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/