From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751837AbeCOJbD (ORCPT ); Thu, 15 Mar 2018 05:31:03 -0400 Received: from mail-wm0-f67.google.com ([74.125.82.67]:32891 "EHLO mail-wm0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751526AbeCOJam (ORCPT ); Thu, 15 Mar 2018 05:30:42 -0400 X-Google-Smtp-Source: AG47ELt9+5GvEawcVKQzMsFmmulzlfYdWbOg+I4zXk4I7VsENQO672alW4qbozBKsAv3Xf2QSXxaAQ== From: Benjamin Gaignard X-Google-Original-From: Benjamin Gaignard To: mchehab@kernel.org, mcoquelin.stm32@gmail.com, alexandre.torgue@st.com, hans.verkuil@cisco.com Cc: linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Benjamin Gaignard Subject: [PATCH 2/2] cec: stm32: add suspend/resume functions Date: Thu, 15 Mar 2018 10:29:49 +0100 Message-Id: <20180315092949.9895-3-benjamin.gaignard@st.com> X-Mailer: git-send-email 2.15.0 In-Reply-To: <20180315092949.9895-1-benjamin.gaignard@st.com> References: <20180315092949.9895-1-benjamin.gaignard@st.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Benjamin Gaignard If wake up irq is defined in device-tree cec adapter could be used has wake up source. Signed-off-by: Benjamin Gaignard --- drivers/media/platform/stm32/stm32-cec.c | 44 +++++++++++++++++++++++++++++++- 1 file changed, 43 insertions(+), 1 deletion(-) diff --git a/drivers/media/platform/stm32/stm32-cec.c b/drivers/media/platform/stm32/stm32-cec.c index 35cc2ffd6b96..68e18ee6655b 100644 --- a/drivers/media/platform/stm32/stm32-cec.c +++ b/drivers/media/platform/stm32/stm32-cec.c @@ -11,8 +11,11 @@ #include #include #include +#include #include +#include #include +#include #include #include @@ -243,7 +246,7 @@ static int stm32_cec_probe(struct platform_device *pdev) struct resource *res; struct stm32_cec *cec; void __iomem *mmio; - int ret; + int ret, wakeirq; cec = devm_kzalloc(&pdev->dev, sizeof(*cec), GFP_KERNEL); if (!cec) @@ -274,6 +277,12 @@ static int stm32_cec_probe(struct platform_device *pdev) if (ret) return ret; + wakeirq = of_irq_get_byname(pdev->dev.of_node, "wakeup"); + if (wakeirq > 0) { + device_init_wakeup(&pdev->dev, true); + dev_pm_set_dedicated_wake_irq(&pdev->dev, wakeirq); + } + cec->clk_cec = devm_clk_get(&pdev->dev, "cec"); if (IS_ERR(cec->clk_cec)) { dev_err(&pdev->dev, "Cannot get cec clock\n"); @@ -312,12 +321,44 @@ static int stm32_cec_remove(struct platform_device *pdev) { struct stm32_cec *cec = platform_get_drvdata(pdev); + dev_pm_clear_wake_irq(&pdev->dev); + device_init_wakeup(&pdev->dev, false); + cec_unregister_adapter(cec->adap); pm_runtime_disable(&pdev->dev); return 0; } + +static int __maybe_unused stm32_cec_suspend(struct device *dev) +{ + struct stm32_cec *cec = dev_get_drvdata(dev); + + pm_runtime_force_suspend(dev); + + if (device_may_wakeup(dev)) + enable_irq_wake(cec->irq); + + pinctrl_pm_select_sleep_state(dev); + + return 0; +} + +static int __maybe_unused stm32_cec_resume(struct device *dev) +{ + struct stm32_cec *cec = dev_get_drvdata(dev); + + pinctrl_pm_select_default_state(dev); + + if (device_may_wakeup(dev)) + disable_irq_wake(cec->irq); + + pm_runtime_force_resume(dev); + + return 0; +} + static int __maybe_unused stm32_cec_runtime_suspend(struct device *dev) { struct stm32_cec *cec = dev_get_drvdata(dev); @@ -341,6 +382,7 @@ static int __maybe_unused stm32_cec_runtime_resume(struct device *dev) static const struct dev_pm_ops stm32_cec_pm_ops = { SET_RUNTIME_PM_OPS(stm32_cec_runtime_suspend, stm32_cec_runtime_resume, NULL) + SET_SYSTEM_SLEEP_PM_OPS(stm32_cec_suspend, stm32_cec_resume) }; static const struct of_device_id stm32_cec_of_match[] = { -- 2.15.0