From patchwork Fri May 3 09:31:10 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hsin-Hsiung Wang X-Patchwork-Id: 10928155 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 989071395 for ; Fri, 3 May 2019 09:43:46 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 841B5284C4 for ; Fri, 3 May 2019 09:43:46 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 73B50284C8; Fri, 3 May 2019 09:43:46 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id A4E82284C4 for ; Fri, 3 May 2019 09:43:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=3z9j15YTW5CY/kYDV77/YqosVDVDz1eeWTi8XCo+egA=; b=SXFVL5KMEpzhqE P6DD5cdg1V2kfe9JV5gIUw6nvG07d1VTYHz5KGhFhp5yK81+uD0ipRhmtEqme+FKFPE3X+BwZu9ZK uRI2CgHCCvy4LKmaVbCdllrIMgPyk3BeCfTYYY7tlvCEwSEsocTy8oXi/pI890kbWrSuUTBrQM7uu DbjViROk4DaEnkPRaMlfcpdrQV6o0/0HOFaL/MuuTPxwSHnmImTve3UB9+vzj/2qQtnN5oHmk+AiI 1kRO82s8hRMPT1r28QlIKCosqr6MeiU6Pzz3nPTT/pJk24ERiekr9YSOrxjfQML/wtXE/d7FW3SUe rUn9ulr8tytH0V35OG0g==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hMUjI-0000F1-Vx; Fri, 03 May 2019 09:43:44 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hMUYp-0001LH-OY; Fri, 03 May 2019 09:32:58 +0000 X-UUID: 21d663a3200b46dea34953dd80d0300b-20190503 X-UUID: 21d663a3200b46dea34953dd80d0300b-20190503 Received: from mtkcas68.mediatek.inc [(172.29.94.19)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 240797573; Fri, 03 May 2019 01:32:43 -0800 Received: from mtkmbs03n2.mediatek.inc (172.21.101.182) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 3 May 2019 02:32:41 -0700 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs03n2.mediatek.inc (172.21.101.182) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 3 May 2019 17:32:40 +0800 Received: from mtkslt302.mediatek.inc (10.21.14.115) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Fri, 3 May 2019 17:32:40 +0800 From: Hsin-Hsiung Wang To: Lee Jones , Rob Herring , "Mark Brown" , Matthias Brugger Subject: [PATCH v3 03/10] mfd: mt6397: modify suspend/resume behavior Date: Fri, 3 May 2019 17:31:10 +0800 Message-ID: <20190503093117.54830-4-hsin-hsiung.wang@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20190503093117.54830-1-hsin-hsiung.wang@mediatek.com> References: <20190503093117.54830-1-hsin-hsiung.wang@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 61EBBF2BCD1705BD69145CF72B24886C465F70180C476E8F381513D85FF0DDC52000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190503_023255_904197_6E300926 X-CRM114-Status: GOOD ( 16.97 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Alessandro Zummo , Alexandre Belloni , srv_heupstream@mediatek.com, devicetree@vger.kernel.org, Sean Wang , Liam Girdwood , linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Eddie Huang , Hsin-Hsiung Wang , linux-rtc@vger.kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Some pmics don't need backup interrupt settings, so we change to use pm notifier for the pmics which are necessary to store settings. Signed-off-by: Hsin-Hsiung Wang --- drivers/mfd/mt6397-core.c | 89 ++++++++++++++------------------- drivers/mfd/mt6397-irq.c | 33 ++++++++++++ include/linux/mfd/mt6397/core.h | 3 ++ 3 files changed, 73 insertions(+), 52 deletions(-) diff --git a/drivers/mfd/mt6397-core.c b/drivers/mfd/mt6397-core.c index c80f0449fe7e..719687a341de 100644 --- a/drivers/mfd/mt6397-core.c +++ b/drivers/mfd/mt6397-core.c @@ -12,7 +12,6 @@ * GNU General Public License for more details. */ -#include #include #include #include @@ -90,40 +89,27 @@ static const struct mfd_cell mt6397_devs[] = { } }; -#ifdef CONFIG_PM_SLEEP -static int mt6397_irq_suspend(struct device *dev) -{ - struct mt6397_chip *chip = dev_get_drvdata(dev); - - regmap_write(chip->regmap, chip->int_con[0], chip->wake_mask[0]); - regmap_write(chip->regmap, chip->int_con[1], 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, chip->int_con[0], chip->irq_masks_cur[0]); - regmap_write(chip->regmap, chip->int_con[1], chip->irq_masks_cur[1]); - - disable_irq_wake(chip->irq); +struct chip_data { + u32 cid_addr; + u32 cid_shift; +}; - return 0; -} -#endif +static const struct chip_data mt6323_core = { + .cid_addr = MT6323_CID, + .cid_shift = 0, +}; -static SIMPLE_DEV_PM_OPS(mt6397_pm_ops, mt6397_irq_suspend, - mt6397_irq_resume); +static const struct chip_data mt6397_core = { + .cid_addr = MT6397_CID, + .cid_shift = 0, +}; static int mt6397_probe(struct platform_device *pdev) { int ret; unsigned int id; struct mt6397_chip *pmic; + const struct chip_data *pmic_core; pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL); if (!pmic) @@ -139,28 +125,30 @@ static int mt6397_probe(struct platform_device *pdev) if (!pmic->regmap) return -ENODEV; - platform_set_drvdata(pdev, pmic); + pmic_core = of_device_get_match_data(&pdev->dev); + if (!pmic_core) + return -ENODEV; - ret = regmap_read(pmic->regmap, MT6397_CID, &id); + ret = regmap_read(pmic->regmap, pmic_core->cid_addr, &id); if (ret) { - dev_err(pmic->dev, "Failed to read chip id: %d\n", ret); + dev_err(&pdev->dev, "Failed to read chip id: %d\n", ret); return ret; } + pmic->chip_id = (id >> pmic_core->cid_shift) & 0xff; + + platform_set_drvdata(pdev, pmic); + pmic->irq = platform_get_irq(pdev, 0); if (pmic->irq <= 0) return pmic->irq; - switch (id & 0xff) { - case MT6323_CHIP_ID: - pmic->int_con[0] = MT6323_INT_CON0; - pmic->int_con[1] = MT6323_INT_CON1; - pmic->int_status[0] = MT6323_INT_STATUS0; - pmic->int_status[1] = MT6323_INT_STATUS1; - ret = mt6397_irq_init(pmic); - if (ret) - return ret; + ret = mt6397_irq_init(pmic); + if (ret) + return ret; + switch (pmic->chip_id) { + case MT6323_CHIP_ID: ret = devm_mfd_add_devices(&pdev->dev, -1, mt6323_devs, ARRAY_SIZE(mt6323_devs), NULL, 0, pmic->irq_domain); @@ -168,21 +156,13 @@ static int mt6397_probe(struct platform_device *pdev) case MT6391_CHIP_ID: case MT6397_CHIP_ID: - pmic->int_con[0] = MT6397_INT_CON0; - pmic->int_con[1] = MT6397_INT_CON1; - pmic->int_status[0] = MT6397_INT_STATUS0; - pmic->int_status[1] = MT6397_INT_STATUS1; - ret = mt6397_irq_init(pmic); - if (ret) - return ret; - ret = devm_mfd_add_devices(&pdev->dev, -1, mt6397_devs, ARRAY_SIZE(mt6397_devs), NULL, 0, pmic->irq_domain); break; default: - dev_err(&pdev->dev, "unsupported chip: %d\n", id); + dev_err(&pdev->dev, "unsupported chip: %d\n", pmic->chip_id); return -ENODEV; } @@ -195,9 +175,15 @@ static int mt6397_probe(struct platform_device *pdev) } static const struct of_device_id mt6397_of_match[] = { - { .compatible = "mediatek,mt6397" }, - { .compatible = "mediatek,mt6323" }, - { } + { + .compatible = "mediatek,mt6323", + .data = &mt6323_core, + }, { + .compatible = "mediatek,mt6397", + .data = &mt6397_core, + }, { + /* sentinel */ + } }; MODULE_DEVICE_TABLE(of, mt6397_of_match); @@ -212,7 +198,6 @@ static struct platform_driver mt6397_driver = { .driver = { .name = "mt6397", .of_match_table = of_match_ptr(mt6397_of_match), - .pm = &mt6397_pm_ops, }, .id_table = mt6397_id, }; diff --git a/drivers/mfd/mt6397-irq.c b/drivers/mfd/mt6397-irq.c index b2d3ce1f3115..669e93df54ef 100644 --- a/drivers/mfd/mt6397-irq.c +++ b/drivers/mfd/mt6397-irq.c @@ -9,6 +9,7 @@ #include #include #include +#include #include #include #include @@ -128,6 +129,36 @@ static const struct irq_domain_ops mt6397_irq_domain_ops = { .map = mt6397_irq_domain_map, }; +static int mt6397_irq_pm_notifier(struct notifier_block *notifier, + unsigned long pm_event, void *unused) +{ + struct mt6397_chip *chip = + container_of(notifier, struct mt6397_chip, pm_nb); + + switch (pm_event) { + case PM_SUSPEND_PREPARE: + regmap_write(chip->regmap, + chip->int_con[0], chip->wake_mask[0]); + regmap_write(chip->regmap, + chip->int_con[1], chip->wake_mask[1]); + enable_irq_wake(chip->irq); + break; + + case PM_POST_SUSPEND: + regmap_write(chip->regmap, + chip->int_con[0], chip->irq_masks_cur[0]); + regmap_write(chip->regmap, + chip->int_con[1], chip->irq_masks_cur[1]); + disable_irq_wake(chip->irq); + break; + + default: + break; + } + + return NOTIFY_DONE; +} + int mt6397_irq_init(struct mt6397_chip *chip) { int ret; @@ -159,6 +190,7 @@ int mt6397_irq_init(struct mt6397_chip *chip) regmap_write(chip->regmap, chip->int_con[0], 0x0); regmap_write(chip->regmap, chip->int_con[1], 0x0); + chip->pm_nb.notifier_call = mt6397_irq_pm_notifier; chip->irq_domain = irq_domain_add_linear(chip->dev->of_node, MT6397_IRQ_NR, &mt6397_irq_domain_ops, @@ -177,5 +209,6 @@ int mt6397_irq_init(struct mt6397_chip *chip) return ret; } + register_pm_notifier(&chip->pm_nb); return 0; } diff --git a/include/linux/mfd/mt6397/core.h b/include/linux/mfd/mt6397/core.h index 93f9f5235575..0cb5d4b0895b 100644 --- a/include/linux/mfd/mt6397/core.h +++ b/include/linux/mfd/mt6397/core.h @@ -15,6 +15,8 @@ #ifndef __MFD_MT6397_CORE_H__ #define __MFD_MT6397_CORE_H__ +#include + enum chip_id { MT6323_CHIP_ID = 0x23, MT6391_CHIP_ID = 0x91, @@ -60,6 +62,7 @@ enum mt6397_irq_numbers { struct mt6397_chip { struct device *dev; struct regmap *regmap; + struct notifier_block pm_nb; int irq; struct irq_domain *irq_domain; struct mutex irqlock;