From patchwork Wed May 25 19:05:57 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 577149 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 7D914C433F5 for ; Wed, 25 May 2022 19:07:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344223AbiEYTHp (ORCPT ); Wed, 25 May 2022 15:07:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51410 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344124AbiEYTHQ (ORCPT ); Wed, 25 May 2022 15:07:16 -0400 Received: from relay5-d.mail.gandi.net (relay5-d.mail.gandi.net [217.70.183.197]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8FD8D11836; Wed, 25 May 2022 12:06:56 -0700 (PDT) Received: (Authenticated sender: paul.kocialkowski@bootlin.com) by mail.gandi.net (Postfix) with ESMTPSA id 013CE1C000E; Wed, 25 May 2022 19:06:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1653505615; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Uw3wNkpVnRz5V6kz11jZ3dR8OhiYXcJ7JBWtWEbL8KA=; b=H7BgoB/6ar01wTw6IcLuXJ6j9hZLIVGagOHJo3qvVhFPpF3lwRUFiz20nQwMp3QsPZ+X3h w/AIrhijrvzRN3jcEdduaF0QFv/N8V7yvTe0zReR8Tn6eCV5iqAmm5+JRCu16cxYU/qpPc VF+AxWmk6D41sfHm50iBXXyQ4MxHDvENC+LEwn/pOouBW3nR+5gE+QH9uVtHHCBQgqItuU WRC5h6Dp3S2G2yiW/5R7InN02PeM7JbQvyTPEn3kr/qhk+GVhlAweILFIPoI2jcV4P1JlN vnotK/BMtb0mOdnAvK0Z19djm7oBFFpu5H/fj/BLtLawZSyB8VrZ4ypWSlyX1w== From: Paul Kocialkowski To: linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev Cc: Yong Deng , Paul Kocialkowski , Mauro Carvalho Chehab , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Laurent Pinchart , Maxime Ripard , Thomas Petazzoni Subject: [PATCH v5 24/44] media: sun6i-csi: Move power management to runtime pm in capture Date: Wed, 25 May 2022 21:05:57 +0200 Message-Id: <20220525190617.696344-25-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220525190617.696344-1-paul.kocialkowski@bootlin.com> References: <20220525190617.696344-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Let's just enable the module when we start using it (at stream on) and benefit from runtime pm instead of enabling it at first open. Also reorder the call to v4l2_pipeline_pm_get. Signed-off-by: Paul Kocialkowski Acked-by: Jernej Skrabec --- .../platform/sunxi/sun6i-csi/sun6i_csi.c | 24 ----------- .../platform/sunxi/sun6i-csi/sun6i_csi.h | 7 ---- .../sunxi/sun6i-csi/sun6i_csi_capture.c | 41 ++++++++++--------- 3 files changed, 22 insertions(+), 50 deletions(-) diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c index d5318e2b04df..9a12077ea03a 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c @@ -148,30 +148,6 @@ bool sun6i_csi_is_format_supported(struct sun6i_csi_device *csi_dev, return false; } -int sun6i_csi_set_power(struct sun6i_csi_device *csi_dev, bool enable) -{ - struct device *dev = csi_dev->dev; - struct regmap *regmap = csi_dev->regmap; - int ret; - - if (!enable) { - regmap_update_bits(regmap, SUN6I_CSI_EN_REG, - SUN6I_CSI_EN_CSI_EN, 0); - pm_runtime_put(dev); - - return 0; - } - - ret = pm_runtime_resume_and_get(dev); - if (ret < 0) - return ret; - - regmap_update_bits(regmap, SUN6I_CSI_EN_REG, SUN6I_CSI_EN_CSI_EN, - SUN6I_CSI_EN_CSI_EN); - - return 0; -} - static enum csi_input_fmt get_csi_input_format(struct sun6i_csi_device *csi_dev, u32 mbus_code, u32 pixformat) { diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h index a522aedb5ee6..1e3bac1829dc 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h @@ -75,13 +75,6 @@ struct sun6i_csi_variant { bool sun6i_csi_is_format_supported(struct sun6i_csi_device *csi_dev, u32 pixformat, u32 mbus_code); -/** - * sun6i_csi_set_power() - power on/off the csi - * @csi: pointer to the csi - * @enable: on/off - */ -int sun6i_csi_set_power(struct sun6i_csi_device *csi_dev, bool enable); - /** * sun6i_csi_update_config() - update the csi register settings * @csi: pointer to the csi diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c index 7236c419971a..1ad1e17e2de5 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c @@ -6,6 +6,7 @@ */ #include +#include #include #include @@ -141,6 +142,9 @@ static void sun6i_csi_capture_enable(struct sun6i_csi_device *csi_dev) { struct regmap *regmap = csi_dev->regmap; + regmap_update_bits(regmap, SUN6I_CSI_EN_REG, SUN6I_CSI_EN_CSI_EN, + SUN6I_CSI_EN_CSI_EN); + regmap_update_bits(regmap, SUN6I_CSI_CAP_REG, SUN6I_CSI_CAP_VCAP_ON, SUN6I_CSI_CAP_VCAP_ON); } @@ -150,6 +154,7 @@ static void sun6i_csi_capture_disable(struct sun6i_csi_device *csi_dev) struct regmap *regmap = csi_dev->regmap; regmap_update_bits(regmap, SUN6I_CSI_CAP_REG, SUN6I_CSI_CAP_VCAP_ON, 0); + regmap_update_bits(regmap, SUN6I_CSI_EN_REG, SUN6I_CSI_EN_CSI_EN, 0); } static void @@ -382,6 +387,7 @@ static int sun6i_csi_capture_start_streaming(struct vb2_queue *queue, struct sun6i_csi_capture *capture = &csi_dev->capture; struct sun6i_csi_capture_state *state = &capture->state; struct video_device *video_dev = &capture->video_dev; + struct device *dev = csi_dev->dev; struct v4l2_subdev *subdev; int ret; @@ -402,6 +408,12 @@ static int sun6i_csi_capture_start_streaming(struct vb2_queue *queue, goto error_media_pipeline; } + /* PM */ + + ret = pm_runtime_resume_and_get(dev); + if (ret < 0) + goto error_media_pipeline; + /* Clear */ sun6i_csi_capture_irq_clear(csi_dev); @@ -429,6 +441,8 @@ static int sun6i_csi_capture_start_streaming(struct vb2_queue *queue, sun6i_csi_capture_disable(csi_dev); sun6i_csi_capture_irq_disable(csi_dev); + pm_runtime_put(dev); + error_media_pipeline: media_pipeline_stop(&video_dev->entity); @@ -442,6 +456,7 @@ static void sun6i_csi_capture_stop_streaming(struct vb2_queue *queue) { struct sun6i_csi_device *csi_dev = vb2_get_drv_priv(queue); struct sun6i_csi_capture *capture = &csi_dev->capture; + struct device *dev = csi_dev->dev; struct v4l2_subdev *subdev; subdev = sun6i_csi_capture_remote_subdev(capture, NULL); @@ -451,6 +466,8 @@ static void sun6i_csi_capture_stop_streaming(struct vb2_queue *queue) sun6i_csi_capture_disable(csi_dev); sun6i_csi_capture_irq_disable(csi_dev); + pm_runtime_put(dev); + media_pipeline_stop(&capture->video_dev.entity); sun6i_csi_capture_state_cleanup(csi_dev, true); @@ -635,27 +652,20 @@ static int sun6i_csi_capture_open(struct file *file) if (mutex_lock_interruptible(&capture->lock)) return -ERESTARTSYS; - ret = v4l2_fh_open(file); + ret = v4l2_pipeline_pm_get(&capture->video_dev.entity); if (ret < 0) goto error_lock; - ret = v4l2_pipeline_pm_get(&capture->video_dev.entity); + ret = v4l2_fh_open(file); if (ret < 0) - goto error_v4l2_fh; - - /* Power on at first open. */ - if (v4l2_fh_is_singular_file(file)) { - ret = sun6i_csi_set_power(csi_dev, true); - if (ret < 0) - goto error_v4l2_fh; - } + goto error_pipeline; mutex_unlock(&capture->lock); return 0; -error_v4l2_fh: - v4l2_fh_release(file); +error_pipeline: + v4l2_pipeline_pm_put(&capture->video_dev.entity); error_lock: mutex_unlock(&capture->lock); @@ -667,19 +677,12 @@ static int sun6i_csi_capture_close(struct file *file) { struct sun6i_csi_device *csi_dev = video_drvdata(file); struct sun6i_csi_capture *capture = &csi_dev->capture; - bool last_close; mutex_lock(&capture->lock); - last_close = v4l2_fh_is_singular_file(file); - _vb2_fop_release(file, NULL); v4l2_pipeline_pm_put(&capture->video_dev.entity); - /* Power off at last close. */ - if (last_close) - sun6i_csi_set_power(csi_dev, false); - mutex_unlock(&capture->lock); return 0;