Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753579AbbHGH0G (ORCPT ); Fri, 7 Aug 2015 03:26:06 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:56100 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1752901AbbHGH0D (ORCPT ); Fri, 7 Aug 2015 03:26:03 -0400 X-Listener-Flag: 11101 From: Henry Chen To: Samuel Ortiz CC: Lee Jones , Matthias Brugger , Henry Chen , Sascha Hauer , Flora Fu , , , Subject: [PATCH v2] mfd: mt6397: Implement wake handler and suspend/resume for mt6397-core.c Date: Fri, 7 Aug 2015 15:25:59 +0800 Message-ID: <1438932359-8476-1-git-send-email-henryc.chen@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3503 Lines: 120 Implement .irq_set_wake() to get who is wakeup source and setup on suspend/reumse. Enbale mt6393_irq as wake up source properly to pinctrl by enable_irq_wake()/enable_irq_wake(). Signed-off-by: Henry Chen --- Chandes since v1: Used enable_irq_wake()/disable_irq_wake to handle irq wakeup source. drivers/mfd/mt6397-core.c | 50 +++++++++++++++++++++++++++++++++++++++++ include/linux/mfd/mt6397/core.h | 1 + 2 files changed, 51 insertions(+) diff --git a/drivers/mfd/mt6397-core.c b/drivers/mfd/mt6397-core.c index 03929a6..49daf1a 100644 --- a/drivers/mfd/mt6397-core.c +++ b/drivers/mfd/mt6397-core.c @@ -93,12 +93,31 @@ static void mt6397_irq_enable(struct irq_data *data) mt6397->irq_masks_cur[reg] |= BIT(shift); } +#ifdef CONFIG_PM_SLEEP +static int mt6397_irq_set_wake(struct irq_data *irq_data, unsigned int on) +{ + struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(irq_data); + int shift = irq_data->hwirq & 0xf; + int reg = irq_data->hwirq >> 4; + + if (on) + mt6397->wake_mask[reg] |= BIT(shift); + else + mt6397->wake_mask[reg] &= ~BIT(shift); + + return 0; +} +#else +#define mt6397_irq_set_wake NULL +#endif + static struct irq_chip mt6397_irq_chip = { .name = "mt6397-irq", .irq_bus_lock = mt6397_irq_lock, .irq_bus_sync_unlock = mt6397_irq_sync_unlock, .irq_enable = mt6397_irq_enable, .irq_disable = mt6397_irq_disable, + .irq_set_wake = mt6397_irq_set_wake, }; static void mt6397_irq_handle_reg(struct mt6397_chip *mt6397, int reg, @@ -142,6 +161,7 @@ static int mt6397_irq_domain_map(struct irq_domain *d, unsigned int irq, irq_set_chip_data(irq, mt6397); irq_set_chip_and_handler(irq, &mt6397_irq_chip, handle_level_irq); irq_set_nested_thread(irq, 1); + #ifdef CONFIG_ARM set_irq_flags(irq, IRQF_VALID); #else @@ -183,6 +203,35 @@ static int mt6397_irq_init(struct mt6397_chip *mt6397) return 0; } +#ifdef CONFIG_PM_SLEEP +static int mt6397_irq_suspend(struct device *dev) +{ + struct mt6397_chip *chip = dev_get_drvdata(dev); + + regmap_write(chip->regmap, MT6397_INT_CON0, chip->wake_mask[0]); + regmap_write(chip->regmap, MT6397_INT_CON1, chip->wake_mask[1]); + + enable_irq_wake(chip->irq); + + return 0; +} + +static int mt6397_irq_resume(struct device *dev) +{ + struct mt6397_chip *chip = dev_get_drvdata(dev); + + regmap_write(chip->regmap, MT6397_INT_CON0, chip->irq_masks_cur[0]); + regmap_write(chip->regmap, MT6397_INT_CON1, chip->irq_masks_cur[1]); + + disable_irq_wake(chip->irq); + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(mt6397_pm_ops, mt6397_irq_suspend, + mt6397_irq_resume); + static int mt6397_probe(struct platform_device *pdev) { int ret; @@ -237,6 +286,7 @@ static struct platform_driver mt6397_driver = { .driver = { .name = "mt6397", .of_match_table = of_match_ptr(mt6397_of_match), + .pm = &mt6397_pm_ops, }, }; diff --git a/include/linux/mfd/mt6397/core.h b/include/linux/mfd/mt6397/core.h index cf5265b..45b8e8a 100644 --- a/include/linux/mfd/mt6397/core.h +++ b/include/linux/mfd/mt6397/core.h @@ -57,6 +57,7 @@ struct mt6397_chip { int irq; struct irq_domain *irq_domain; struct mutex irqlock; + u16 wake_mask[2]; u16 irq_masks_cur[2]; u16 irq_masks_cache[2]; }; -- 1.8.1.1.dirty -- 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/