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media: sun6i-csi: Split stream sequences and irq code in capture

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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 <paul.kocialkowski@bootlin.com>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Paul Kocialkowski 2022-11-03 16:30:52 +00:00 committed by Mauro Carvalho Chehab
parent dc8b931ca9
commit 85469b9e66
3 changed files with 55 additions and 36 deletions
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26
drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
View File

@ -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 = {

7
drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h
View File

@ -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)
{

58
drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c
View File

@ -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);