Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751474AbdFETMe (ORCPT ); Mon, 5 Jun 2017 15:12:34 -0400 Received: from mga05.intel.com ([192.55.52.43]:1461 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751335AbdFETLo (ORCPT ); Mon, 5 Jun 2017 15:11:44 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.39,302,1493708400"; d="scan'208";a="977045123" From: sathyanarayanan.kuppuswamy@linux.intel.com To: gnurou@gmail.com, heikki.krogerus@linux.intel.com, gregkh@linuxfoundation.org, linus.walleij@linaro.org, edubezval@gmail.com, dvhart@infradead.org, rui.zhang@intel.com, lee.jones@linaro.org, andy@infradead.org Cc: platform-driver-x86@vger.kernel.org, linux-gpio@vger.kernel.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, sathyaosid@gmail.com, Kuppuswamy Sathyanarayanan Subject: [PATCH v6 3/6] mfd: intel_soc_pmic_bxtwc: Remove second level IRQ for gpio device Date: Mon, 5 Jun 2017 12:08:03 -0700 Message-Id: <36b0102ffea3d762f3ad89d8519fe5ecb23b377b.1496687716.git.sathyanarayanan.kuppuswamy@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3264 Lines: 105 From: Kuppuswamy Sathyanarayanan Currently all PMIC GPIO domain IRQs are consumed by the same device(bxt_wcove_gpio), so there is no need to export them as separate interrupts. We can just export only the first level GPIO IRQ(BXTWC_GPIO_LVL1_IRQ) as an IRQ resource and let the GPIO device driver(bxt_wcove_gpio) handle the GPIO sub domain IRQs based on status value of GPIO level2 interrupt status register. Also, just using only the first level IRQ will eliminate the bug involved in requesting only the second level IRQ and not explicitly enable the first level IRQ. For more info on this issue please read the details at, https://lkml.org/lkml/2017/2/27/148 This patch also makes relevant change in Whiskey cove GPIO driver to use only first level PMIC GPIO IRQ. Signed-off-by: Kuppuswamy Sathyanarayanan Acked-for-MFD-by: Lee Jones Acked-by: Linus Walleij --- drivers/gpio/gpio-wcove.c | 14 +++++++++++++- drivers/mfd/intel_soc_pmic_bxtwc.c | 7 +------ 2 files changed, 14 insertions(+), 7 deletions(-) Changes since v1: * None Changes since v2: * Rebased on top of latest release. Changes since v3: * None Changes since v5: * Squashed gpio driver patch. * Changes irq -> IRQ. diff --git a/drivers/gpio/gpio-wcove.c b/drivers/gpio/gpio-wcove.c index 7b1bc20..bba7704 100644 --- a/drivers/gpio/gpio-wcove.c +++ b/drivers/gpio/gpio-wcove.c @@ -401,7 +401,7 @@ static int wcove_gpio_probe(struct platform_device *pdev) if (!wg) return -ENOMEM; - wg->regmap_irq_chip = pmic->irq_chip_data_level2; + wg->regmap_irq_chip = pmic->irq_chip_data; platform_set_drvdata(pdev, wg); @@ -449,6 +449,18 @@ static int wcove_gpio_probe(struct platform_device *pdev) gpiochip_set_nested_irqchip(&wg->chip, &wcove_irqchip, virq); + /* Enable GPIO0 interrupts */ + ret = regmap_update_bits(wg->regmap, IRQ_MASK_BASE, GPIO_IRQ0_MASK, + 0x00); + if (ret) + return ret; + + /* Enable GPIO1 interrupts */ + ret = regmap_update_bits(wg->regmap, IRQ_MASK_BASE + 1, GPIO_IRQ1_MASK, + 0x00); + if (ret) + return ret; + return 0; } diff --git a/drivers/mfd/intel_soc_pmic_bxtwc.c b/drivers/mfd/intel_soc_pmic_bxtwc.c index 7c1ed27..af11c43 100644 --- a/drivers/mfd/intel_soc_pmic_bxtwc.c +++ b/drivers/mfd/intel_soc_pmic_bxtwc.c @@ -89,8 +89,6 @@ enum bxtwc_irqs_level2 { BXTWC_USBC_IRQ, BXTWC_CHGR0_IRQ, BXTWC_CHGR1_IRQ, - BXTWC_GPIO0_IRQ, - BXTWC_GPIO1_IRQ, BXTWC_CRIT_IRQ, }; @@ -116,8 +114,6 @@ static const struct regmap_irq bxtwc_regmap_irqs_level2[] = { REGMAP_IRQ_REG(BXTWC_USBC_IRQ, 2, BIT(5)), REGMAP_IRQ_REG(BXTWC_CHGR0_IRQ, 2, 0x1f), REGMAP_IRQ_REG(BXTWC_CHGR1_IRQ, 3, 0x1f), - REGMAP_IRQ_REG(BXTWC_GPIO0_IRQ, 4, 0xff), - REGMAP_IRQ_REG(BXTWC_GPIO1_IRQ, 5, 0x3f), REGMAP_IRQ_REG(BXTWC_CRIT_IRQ, 6, 0x03), }; @@ -153,8 +149,7 @@ static struct regmap_irq_chip bxtwc_regmap_irq_chip_tmu = { }; static struct resource gpio_resources[] = { - DEFINE_RES_IRQ_NAMED(BXTWC_GPIO0_IRQ, "GPIO0"), - DEFINE_RES_IRQ_NAMED(BXTWC_GPIO1_IRQ, "GPIO1"), + DEFINE_RES_IRQ_NAMED(BXTWC_GPIO_LVL1_IRQ, "GPIO"), }; static struct resource adc_resources[] = { -- 2.7.4