From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E877FC25B0E for ; Mon, 15 Aug 2022 13:13:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242785AbiHONNz (ORCPT ); Mon, 15 Aug 2022 09:13:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53202 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242802AbiHONNw (ORCPT ); Mon, 15 Aug 2022 09:13:52 -0400 Received: from muru.com (muru.com [72.249.23.125]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 21CD91C10D; Mon, 15 Aug 2022 06:13:36 -0700 (PDT) Received: from hillo.muru.com (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTP id 9580181D0; Mon, 15 Aug 2022 13:06:42 +0000 (UTC) From: Tony Lindgren To: Daniel Lezcano , Thomas Gleixner Cc: Aaro Koskinen , Grygorii Strashko , Janusz Krzysztofik , Keerthy , Ladislav Michl , Nishanth Menon , Suman Anna , Vignesh Raghavendra , linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH 6/9] clocksource/drivers/timer-ti-dm: Use runtime PM directly and check errors Date: Mon, 15 Aug 2022 16:12:47 +0300 Message-Id: <20220815131250.34603-7-tony@atomide.com> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20220815131250.34603-1-tony@atomide.com> References: <20220815131250.34603-1-tony@atomide.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org Use pm_runtime_resume_and_get() and check for a possible error returned. We want to do this as omap_dm_timer_enable() and omap_dm_timer_disable() are exposed to the pwm and remoteproc drivers, and in the following patch we turn struct omap_dm_timer into a cookie used by the exposed functions only. Signed-off-by: Tony Lindgren --- drivers/clocksource/timer-ti-dm.c | 117 +++++++++++++++++++++++------- 1 file changed, 91 insertions(+), 26 deletions(-) diff --git a/drivers/clocksource/timer-ti-dm.c b/drivers/clocksource/timer-ti-dm.c --- a/drivers/clocksource/timer-ti-dm.c +++ b/drivers/clocksource/timer-ti-dm.c @@ -387,16 +387,24 @@ static int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source) static void omap_dm_timer_enable(struct omap_dm_timer *timer) { - pm_runtime_get_sync(&timer->pdev->dev); + struct device *dev = &timer->pdev->dev; + int rc; + + rc = pm_runtime_resume_and_get(dev); + if (rc) + dev_err(dev, "could not enable timer\n"); } static void omap_dm_timer_disable(struct omap_dm_timer *timer) { - pm_runtime_put_sync(&timer->pdev->dev); + struct device *dev = &timer->pdev->dev; + + pm_runtime_put_sync(dev); } static int omap_dm_timer_prepare(struct omap_dm_timer *timer) { + struct device *dev = &timer->pdev->dev; int rc; /* @@ -411,18 +419,20 @@ static int omap_dm_timer_prepare(struct omap_dm_timer *timer) } } - omap_dm_timer_enable(timer); + rc = pm_runtime_resume_and_get(dev); + if (rc) + return rc; if (timer->capability & OMAP_TIMER_NEEDS_RESET) { rc = omap_dm_timer_reset(timer); if (rc) { - omap_dm_timer_disable(timer); + pm_runtime_put_sync(dev); return rc; } } __omap_dm_timer_enable_posted(timer); - omap_dm_timer_disable(timer); + pm_runtime_put_sync(dev); return 0; } @@ -628,12 +638,16 @@ __u32 omap_dm_timer_modify_idlect_mask(__u32 inputmask) static int omap_dm_timer_start(struct omap_dm_timer *timer) { + struct device *dev = &timer->pdev->dev; + int rc; u32 l; if (unlikely(!timer)) return -EINVAL; - omap_dm_timer_enable(timer); + rc = pm_runtime_resume_and_get(dev); + if (rc) + return rc; l = dmtimer_read(timer, OMAP_TIMER_CTRL_REG); if (!(l & OMAP_TIMER_CTRL_ST)) { @@ -646,6 +660,7 @@ static int omap_dm_timer_start(struct omap_dm_timer *timer) static int omap_dm_timer_stop(struct omap_dm_timer *timer) { + struct device *dev = &timer->pdev->dev; unsigned long rate = 0; if (unlikely(!timer)) @@ -656,32 +671,47 @@ static int omap_dm_timer_stop(struct omap_dm_timer *timer) __omap_dm_timer_stop(timer, rate); - omap_dm_timer_disable(timer); + pm_runtime_put_sync(dev); + return 0; } static int omap_dm_timer_set_load(struct omap_dm_timer *timer, unsigned int load) { + struct device *dev; + int rc; + if (unlikely(!timer)) return -EINVAL; - omap_dm_timer_enable(timer); + dev = &timer->pdev->dev; + rc = pm_runtime_resume_and_get(dev); + if (rc) + return rc; + dmtimer_write(timer, OMAP_TIMER_LOAD_REG, load); - omap_dm_timer_disable(timer); + pm_runtime_put_sync(dev); + return 0; } static int omap_dm_timer_set_match(struct omap_dm_timer *timer, int enable, unsigned int match) { + struct device *dev; + int rc; u32 l; if (unlikely(!timer)) return -EINVAL; - omap_dm_timer_enable(timer); + dev = &timer->pdev->dev; + rc = pm_runtime_resume_and_get(dev); + if (rc) + return rc; + l = dmtimer_read(timer, OMAP_TIMER_CTRL_REG); if (enable) l |= OMAP_TIMER_CTRL_CE; @@ -690,19 +720,26 @@ static int omap_dm_timer_set_match(struct omap_dm_timer *timer, int enable, dmtimer_write(timer, OMAP_TIMER_MATCH_REG, match); dmtimer_write(timer, OMAP_TIMER_CTRL_REG, l); - omap_dm_timer_disable(timer); + pm_runtime_put_sync(dev); + return 0; } static int omap_dm_timer_set_pwm(struct omap_dm_timer *timer, int def_on, int toggle, int trigger, int autoreload) { + struct device *dev; + int rc; u32 l; if (unlikely(!timer)) return -EINVAL; - omap_dm_timer_enable(timer); + dev = &timer->pdev->dev; + rc = pm_runtime_resume_and_get(dev); + if (rc) + return rc; + l = dmtimer_read(timer, OMAP_TIMER_CTRL_REG); l &= ~(OMAP_TIMER_CTRL_GPOCFG | OMAP_TIMER_CTRL_SCPWM | OMAP_TIMER_CTRL_PT | (0x03 << 10) | OMAP_TIMER_CTRL_AR); @@ -715,20 +752,28 @@ static int omap_dm_timer_set_pwm(struct omap_dm_timer *timer, int def_on, l |= OMAP_TIMER_CTRL_AR; dmtimer_write(timer, OMAP_TIMER_CTRL_REG, l); - omap_dm_timer_disable(timer); + pm_runtime_put_sync(dev); + return 0; } static int omap_dm_timer_get_pwm_status(struct omap_dm_timer *timer) { + struct device *dev; + int rc; u32 l; if (unlikely(!timer)) return -EINVAL; - omap_dm_timer_enable(timer); + dev = &timer->pdev->dev; + rc = pm_runtime_resume_and_get(dev); + if (rc) + return rc; + l = dmtimer_read(timer, OMAP_TIMER_CTRL_REG); - omap_dm_timer_disable(timer); + + pm_runtime_put_sync(dev); return l; } @@ -736,12 +781,18 @@ static int omap_dm_timer_get_pwm_status(struct omap_dm_timer *timer) static int omap_dm_timer_set_prescaler(struct omap_dm_timer *timer, int prescaler) { + struct device *dev; + int rc; u32 l; if (unlikely(!timer) || prescaler < -1 || prescaler > 7) return -EINVAL; - omap_dm_timer_enable(timer); + dev = &timer->pdev->dev; + rc = pm_runtime_resume_and_get(dev); + if (rc) + return rc; + l = dmtimer_read(timer, OMAP_TIMER_CTRL_REG); l &= ~(OMAP_TIMER_CTRL_PRE | (0x07 << 2)); if (prescaler >= 0) { @@ -750,20 +801,29 @@ static int omap_dm_timer_set_prescaler(struct omap_dm_timer *timer, } dmtimer_write(timer, OMAP_TIMER_CTRL_REG, l); - omap_dm_timer_disable(timer); + pm_runtime_put_sync(dev); + return 0; } static int omap_dm_timer_set_int_enable(struct omap_dm_timer *timer, unsigned int value) { + struct device *dev; + int rc; + if (unlikely(!timer)) return -EINVAL; - omap_dm_timer_enable(timer); + dev = &timer->pdev->dev; + rc = pm_runtime_resume_and_get(dev); + if (rc) + return rc; + __omap_dm_timer_int_enable(timer, value); - omap_dm_timer_disable(timer); + pm_runtime_put_sync(dev); + return 0; } @@ -776,12 +836,17 @@ static int omap_dm_timer_set_int_enable(struct omap_dm_timer *timer, */ static int omap_dm_timer_set_int_disable(struct omap_dm_timer *timer, u32 mask) { + struct device *dev; u32 l = mask; + int rc; if (unlikely(!timer)) return -EINVAL; - omap_dm_timer_enable(timer); + dev = &timer->pdev->dev; + rc = pm_runtime_resume_and_get(dev); + if (rc) + return rc; if (timer->revision == 1) l = dmtimer_read(timer, timer->irq_ena) & ~mask; @@ -790,7 +855,8 @@ static int omap_dm_timer_set_int_disable(struct omap_dm_timer *timer, u32 mask) l = dmtimer_read(timer, OMAP_TIMER_WAKEUP_EN_REG) & ~mask; dmtimer_write(timer, OMAP_TIMER_WAKEUP_EN_REG, l); - omap_dm_timer_disable(timer); + pm_runtime_put_sync(dev); + return 0; } @@ -943,11 +1009,11 @@ static int omap_dm_timer_probe(struct platform_device *pdev) pm_runtime_enable(dev); if (!timer->reserved) { - ret = pm_runtime_get_sync(dev); - if (ret < 0) { + ret = pm_runtime_resume_and_get(dev); + if (ret) { dev_err(dev, "%s: pm_runtime_get_sync failed!\n", __func__); - goto err_get_sync; + goto err_disable; } __omap_dm_timer_init_regs(timer); pm_runtime_put(dev); @@ -962,8 +1028,7 @@ static int omap_dm_timer_probe(struct platform_device *pdev) return 0; -err_get_sync: - pm_runtime_put_noidle(dev); +err_disable: pm_runtime_disable(dev); return ret; } -- 2.37.1 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 350ADC00140 for ; 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Mon, 15 Aug 2022 13:17:31 +0000 Received: from muru.com ([72.249.23.125]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oNZuS-00Gcgr-6S for linux-arm-kernel@lists.infradead.org; Mon, 15 Aug 2022 13:13:43 +0000 Received: from hillo.muru.com (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTP id 9580181D0; Mon, 15 Aug 2022 13:06:42 +0000 (UTC) From: Tony Lindgren To: Daniel Lezcano , Thomas Gleixner Subject: [PATCH 6/9] clocksource/drivers/timer-ti-dm: Use runtime PM directly and check errors Date: Mon, 15 Aug 2022 16:12:47 +0300 Message-Id: <20220815131250.34603-7-tony@atomide.com> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20220815131250.34603-1-tony@atomide.com> References: <20220815131250.34603-1-tony@atomide.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220815_061336_359131_1C93773A X-CRM114-Status: GOOD ( 17.19 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Nishanth Menon , Grygorii Strashko , Vignesh Raghavendra , Aaro Koskinen , Keerthy , Janusz Krzysztofik , linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, Ladislav Michl , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Use pm_runtime_resume_and_get() and check for a possible error returned. We want to do this as omap_dm_timer_enable() and omap_dm_timer_disable() are exposed to the pwm and remoteproc drivers, and in the following patch we turn struct omap_dm_timer into a cookie used by the exposed functions only. Signed-off-by: Tony Lindgren --- drivers/clocksource/timer-ti-dm.c | 117 +++++++++++++++++++++++------- 1 file changed, 91 insertions(+), 26 deletions(-) diff --git a/drivers/clocksource/timer-ti-dm.c b/drivers/clocksource/timer-ti-dm.c --- a/drivers/clocksource/timer-ti-dm.c +++ b/drivers/clocksource/timer-ti-dm.c @@ -387,16 +387,24 @@ static int omap_dm_timer_set_source(struct omap_dm_timer *timer, int source) static void omap_dm_timer_enable(struct omap_dm_timer *timer) { - pm_runtime_get_sync(&timer->pdev->dev); + struct device *dev = &timer->pdev->dev; + int rc; + + rc = pm_runtime_resume_and_get(dev); + if (rc) + dev_err(dev, "could not enable timer\n"); } static void omap_dm_timer_disable(struct omap_dm_timer *timer) { - pm_runtime_put_sync(&timer->pdev->dev); + struct device *dev = &timer->pdev->dev; + + pm_runtime_put_sync(dev); } static int omap_dm_timer_prepare(struct omap_dm_timer *timer) { + struct device *dev = &timer->pdev->dev; int rc; /* @@ -411,18 +419,20 @@ static int omap_dm_timer_prepare(struct omap_dm_timer *timer) } } - omap_dm_timer_enable(timer); + rc = pm_runtime_resume_and_get(dev); + if (rc) + return rc; if (timer->capability & OMAP_TIMER_NEEDS_RESET) { rc = omap_dm_timer_reset(timer); if (rc) { - omap_dm_timer_disable(timer); + pm_runtime_put_sync(dev); return rc; } } __omap_dm_timer_enable_posted(timer); - omap_dm_timer_disable(timer); + pm_runtime_put_sync(dev); return 0; } @@ -628,12 +638,16 @@ __u32 omap_dm_timer_modify_idlect_mask(__u32 inputmask) static int omap_dm_timer_start(struct omap_dm_timer *timer) { + struct device *dev = &timer->pdev->dev; + int rc; u32 l; if (unlikely(!timer)) return -EINVAL; - omap_dm_timer_enable(timer); + rc = pm_runtime_resume_and_get(dev); + if (rc) + return rc; l = dmtimer_read(timer, OMAP_TIMER_CTRL_REG); if (!(l & OMAP_TIMER_CTRL_ST)) { @@ -646,6 +660,7 @@ static int omap_dm_timer_start(struct omap_dm_timer *timer) static int omap_dm_timer_stop(struct omap_dm_timer *timer) { + struct device *dev = &timer->pdev->dev; unsigned long rate = 0; if (unlikely(!timer)) @@ -656,32 +671,47 @@ static int omap_dm_timer_stop(struct omap_dm_timer *timer) __omap_dm_timer_stop(timer, rate); - omap_dm_timer_disable(timer); + pm_runtime_put_sync(dev); + return 0; } static int omap_dm_timer_set_load(struct omap_dm_timer *timer, unsigned int load) { + struct device *dev; + int rc; + if (unlikely(!timer)) return -EINVAL; - omap_dm_timer_enable(timer); + dev = &timer->pdev->dev; + rc = pm_runtime_resume_and_get(dev); + if (rc) + return rc; + dmtimer_write(timer, OMAP_TIMER_LOAD_REG, load); - omap_dm_timer_disable(timer); + pm_runtime_put_sync(dev); + return 0; } static int omap_dm_timer_set_match(struct omap_dm_timer *timer, int enable, unsigned int match) { + struct device *dev; + int rc; u32 l; if (unlikely(!timer)) return -EINVAL; - omap_dm_timer_enable(timer); + dev = &timer->pdev->dev; + rc = pm_runtime_resume_and_get(dev); + if (rc) + return rc; + l = dmtimer_read(timer, OMAP_TIMER_CTRL_REG); if (enable) l |= OMAP_TIMER_CTRL_CE; @@ -690,19 +720,26 @@ static int omap_dm_timer_set_match(struct omap_dm_timer *timer, int enable, dmtimer_write(timer, OMAP_TIMER_MATCH_REG, match); dmtimer_write(timer, OMAP_TIMER_CTRL_REG, l); - omap_dm_timer_disable(timer); + pm_runtime_put_sync(dev); + return 0; } static int omap_dm_timer_set_pwm(struct omap_dm_timer *timer, int def_on, int toggle, int trigger, int autoreload) { + struct device *dev; + int rc; u32 l; if (unlikely(!timer)) return -EINVAL; - omap_dm_timer_enable(timer); + dev = &timer->pdev->dev; + rc = pm_runtime_resume_and_get(dev); + if (rc) + return rc; + l = dmtimer_read(timer, OMAP_TIMER_CTRL_REG); l &= ~(OMAP_TIMER_CTRL_GPOCFG | OMAP_TIMER_CTRL_SCPWM | OMAP_TIMER_CTRL_PT | (0x03 << 10) | OMAP_TIMER_CTRL_AR); @@ -715,20 +752,28 @@ static int omap_dm_timer_set_pwm(struct omap_dm_timer *timer, int def_on, l |= OMAP_TIMER_CTRL_AR; dmtimer_write(timer, OMAP_TIMER_CTRL_REG, l); - omap_dm_timer_disable(timer); + pm_runtime_put_sync(dev); + return 0; } static int omap_dm_timer_get_pwm_status(struct omap_dm_timer *timer) { + struct device *dev; + int rc; u32 l; if (unlikely(!timer)) return -EINVAL; - omap_dm_timer_enable(timer); + dev = &timer->pdev->dev; + rc = pm_runtime_resume_and_get(dev); + if (rc) + return rc; + l = dmtimer_read(timer, OMAP_TIMER_CTRL_REG); - omap_dm_timer_disable(timer); + + pm_runtime_put_sync(dev); return l; } @@ -736,12 +781,18 @@ static int omap_dm_timer_get_pwm_status(struct omap_dm_timer *timer) static int omap_dm_timer_set_prescaler(struct omap_dm_timer *timer, int prescaler) { + struct device *dev; + int rc; u32 l; if (unlikely(!timer) || prescaler < -1 || prescaler > 7) return -EINVAL; - omap_dm_timer_enable(timer); + dev = &timer->pdev->dev; + rc = pm_runtime_resume_and_get(dev); + if (rc) + return rc; + l = dmtimer_read(timer, OMAP_TIMER_CTRL_REG); l &= ~(OMAP_TIMER_CTRL_PRE | (0x07 << 2)); if (prescaler >= 0) { @@ -750,20 +801,29 @@ static int omap_dm_timer_set_prescaler(struct omap_dm_timer *timer, } dmtimer_write(timer, OMAP_TIMER_CTRL_REG, l); - omap_dm_timer_disable(timer); + pm_runtime_put_sync(dev); + return 0; } static int omap_dm_timer_set_int_enable(struct omap_dm_timer *timer, unsigned int value) { + struct device *dev; + int rc; + if (unlikely(!timer)) return -EINVAL; - omap_dm_timer_enable(timer); + dev = &timer->pdev->dev; + rc = pm_runtime_resume_and_get(dev); + if (rc) + return rc; + __omap_dm_timer_int_enable(timer, value); - omap_dm_timer_disable(timer); + pm_runtime_put_sync(dev); + return 0; } @@ -776,12 +836,17 @@ static int omap_dm_timer_set_int_enable(struct omap_dm_timer *timer, */ static int omap_dm_timer_set_int_disable(struct omap_dm_timer *timer, u32 mask) { + struct device *dev; u32 l = mask; + int rc; if (unlikely(!timer)) return -EINVAL; - omap_dm_timer_enable(timer); + dev = &timer->pdev->dev; + rc = pm_runtime_resume_and_get(dev); + if (rc) + return rc; if (timer->revision == 1) l = dmtimer_read(timer, timer->irq_ena) & ~mask; @@ -790,7 +855,8 @@ static int omap_dm_timer_set_int_disable(struct omap_dm_timer *timer, u32 mask) l = dmtimer_read(timer, OMAP_TIMER_WAKEUP_EN_REG) & ~mask; dmtimer_write(timer, OMAP_TIMER_WAKEUP_EN_REG, l); - omap_dm_timer_disable(timer); + pm_runtime_put_sync(dev); + return 0; } @@ -943,11 +1009,11 @@ static int omap_dm_timer_probe(struct platform_device *pdev) pm_runtime_enable(dev); if (!timer->reserved) { - ret = pm_runtime_get_sync(dev); - if (ret < 0) { + ret = pm_runtime_resume_and_get(dev); + if (ret) { dev_err(dev, "%s: pm_runtime_get_sync failed!\n", __func__); - goto err_get_sync; + goto err_disable; } __omap_dm_timer_init_regs(timer); pm_runtime_put(dev); @@ -962,8 +1028,7 @@ static int omap_dm_timer_probe(struct platform_device *pdev) return 0; -err_get_sync: - pm_runtime_put_noidle(dev); +err_disable: pm_runtime_disable(dev); return ret; } -- 2.37.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel