From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from relay1-d.mail.gandi.net (relay1-d.mail.gandi.net [217.70.183.193]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D57412578 for ; Thu, 3 Nov 2022 16:31:43 +0000 (UTC) Received: (Authenticated sender: paul.kocialkowski@bootlin.com) by mail.gandi.net (Postfix) with ESMTPSA id 13113240015; Thu, 3 Nov 2022 16:31:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1667493102; 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=VS9l0xQ4Fcky+wBccL4iLRlN/70BCazK2voOcRBEp3s=; b=Jxyt5s7IyITlfe9vs0Dvdot7n3Z0PFmcWZ47fGLvtGt//xswhz5GaNrRx6kcO5UfNwjoMo BA+yXSn9iHKo2nmmfvM6+QEk4UzOfLYsv8SDAckgazpS+r8AXWiTFcP+zl9yizSsaHkmKi lZzhGeO0Bm5g3GfzY70rDG/TRb///jReMGQeTh7DNp5HHKE3oyZ41sYR4cgxRV+ggcAH0f lHx3BLZIzPimz1+dtJbAeqhCIeaGc1BD4AGJUzpZTST1uPY5bnzN5Dm4JnMOGVWdYRzZbd Hqw3hTM6bg/sO3D4HuMdpmjx19q/T5iQ4NASgpJ5fmkwWT057x0QISZCfWhDog== 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 v7 07/28] media: sun6i-csi: Split stream sequences and irq code in capture Date: Thu, 3 Nov 2022 17:30:52 +0100 Message-Id: <20221103163113.245462-8-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221103163113.245462-1-paul.kocialkowski@bootlin.com> References: <20221103163113.245462-1-paul.kocialkowski@bootlin.com> Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Create minimal helpers that split the enable/disable flow, which will make it easier to move control over to the bridge later on. Generally speaking the goal is to move register configuration to the capture code and later split it with the bridge code. Signed-off-by: Paul Kocialkowski Acked-by: Jernej Skrabec --- .../platform/sunxi/sun6i-csi/sun6i_csi.c | 26 --------- .../platform/sunxi/sun6i-csi/sun6i_csi.h | 7 --- .../sunxi/sun6i-csi/sun6i_csi_capture.c | 58 ++++++++++++++++++- 3 files changed, 55 insertions(+), 36 deletions(-) diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c index 5e03069bd4c3..d5318e2b04df 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c @@ -535,32 +535,6 @@ int sun6i_csi_update_config(struct sun6i_csi_device *csi_dev, return 0; } -void sun6i_csi_set_stream(struct sun6i_csi_device *csi_dev, bool enable) -{ - struct regmap *regmap = csi_dev->regmap; - - if (!enable) { - regmap_update_bits(regmap, SUN6I_CSI_CAP_REG, - SUN6I_CSI_CAP_VCAP_ON, 0); - regmap_write(regmap, SUN6I_CSI_CH_INT_EN_REG, 0); - return; - } - - regmap_write(regmap, SUN6I_CSI_CH_INT_STA_REG, - SUN6I_CSI_CH_INT_STA_CLEAR); - regmap_write(regmap, SUN6I_CSI_CH_INT_EN_REG, - SUN6I_CSI_CH_INT_EN_VS | - SUN6I_CSI_CH_INT_EN_HB_OF | - SUN6I_CSI_CH_INT_EN_FIFO2_OF | - SUN6I_CSI_CH_INT_EN_FIFO1_OF | - SUN6I_CSI_CH_INT_EN_FIFO0_OF | - SUN6I_CSI_CH_INT_EN_FD | - SUN6I_CSI_CH_INT_EN_CD); - - regmap_update_bits(regmap, SUN6I_CSI_CAP_REG, SUN6I_CSI_CAP_VCAP_ON, - SUN6I_CSI_CAP_VCAP_ON); -} - /* Media */ static const struct media_device_ops sun6i_csi_media_ops = { diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h index 75867cde7985..6fe40a56d6df 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h @@ -96,13 +96,6 @@ int sun6i_csi_set_power(struct sun6i_csi_device *csi_dev, bool enable); int sun6i_csi_update_config(struct sun6i_csi_device *csi_dev, struct sun6i_csi_config *config); -/** - * sun6i_csi_set_stream() - start/stop csi streaming - * @csi_dev: pointer to the csi device - * @enable: start/stop - */ -void sun6i_csi_set_stream(struct sun6i_csi_device *csi_dev, bool enable); - /* get bpp form v4l2 pixformat */ static inline int sun6i_csi_get_bpp(unsigned int pixformat) { 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 cb23dcdf250f..e611f8c94d9d 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c @@ -107,6 +107,51 @@ static bool sun6i_csi_capture_format_check(u32 format) /* Capture */ +static void sun6i_csi_capture_irq_enable(struct sun6i_csi_device *csi_dev) +{ + struct regmap *regmap = csi_dev->regmap; + + regmap_write(regmap, SUN6I_CSI_CH_INT_EN_REG, + SUN6I_CSI_CH_INT_EN_VS | + SUN6I_CSI_CH_INT_EN_HB_OF | + SUN6I_CSI_CH_INT_EN_FIFO2_OF | + SUN6I_CSI_CH_INT_EN_FIFO1_OF | + SUN6I_CSI_CH_INT_EN_FIFO0_OF | + SUN6I_CSI_CH_INT_EN_FD | + SUN6I_CSI_CH_INT_EN_CD); +} + +static void sun6i_csi_capture_irq_disable(struct sun6i_csi_device *csi_dev) +{ + struct regmap *regmap = csi_dev->regmap; + + regmap_write(regmap, SUN6I_CSI_CH_INT_EN_REG, 0); +} + +static void sun6i_csi_capture_irq_clear(struct sun6i_csi_device *csi_dev) +{ + struct regmap *regmap = csi_dev->regmap; + + regmap_write(regmap, SUN6I_CSI_CH_INT_EN_REG, 0); + regmap_write(regmap, SUN6I_CSI_CH_INT_STA_REG, + SUN6I_CSI_CH_INT_STA_CLEAR); +} + +static void sun6i_csi_capture_enable(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, + SUN6I_CSI_CAP_VCAP_ON); +} + +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); +} + static void sun6i_csi_capture_buffer_configure(struct sun6i_csi_device *csi_dev, struct sun6i_csi_buffer *csi_buffer) @@ -357,6 +402,10 @@ static int sun6i_csi_capture_start_streaming(struct vb2_queue *queue, goto error_media_pipeline; } + /* Clear */ + + sun6i_csi_capture_irq_clear(csi_dev); + /* Configure */ sun6i_csi_capture_configure(csi_dev); @@ -367,7 +416,8 @@ static int sun6i_csi_capture_start_streaming(struct vb2_queue *queue, /* Enable */ - sun6i_csi_set_stream(csi_dev, true); + sun6i_csi_capture_irq_enable(csi_dev); + sun6i_csi_capture_enable(csi_dev); ret = v4l2_subdev_call(subdev, video, s_stream, 1); if (ret && ret != -ENOIOCTLCMD) @@ -376,7 +426,8 @@ static int sun6i_csi_capture_start_streaming(struct vb2_queue *queue, return 0; error_stream: - sun6i_csi_set_stream(csi_dev, false); + sun6i_csi_capture_disable(csi_dev); + sun6i_csi_capture_irq_disable(csi_dev); error_media_pipeline: video_device_pipeline_stop(video_dev); @@ -397,7 +448,8 @@ static void sun6i_csi_capture_stop_streaming(struct vb2_queue *queue) if (subdev) v4l2_subdev_call(subdev, video, s_stream, 0); - sun6i_csi_set_stream(csi_dev, false); + sun6i_csi_capture_disable(csi_dev); + sun6i_csi_capture_irq_disable(csi_dev); video_device_pipeline_stop(&capture->video_dev); -- 2.38.1