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Commit 36f6b2a3 authored by Martin Kepplinger's avatar Martin Kepplinger Committed by Hans Verkuil
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media: imx: imx8mq-mipi-csi2: Use V4L2 subdev active state 

Simplify the driver by using the V4L2 subdev active state API to store
the active format.
Signed-off-by: default avatarMartin Kepplinger <martin.kepplinger@puri.sm>
Reviewed-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
parent 6cf9e357
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Showing with 45 additions and 72 deletions
drivers/staging/media/imx/imx8mq-mipi-csi2.c
View file @ 36f6b2a3
......@@ -119,9 +119,7 @@ struct csi_state {
struct v4l2_mbus_config_mipi_csi2 bus;
struct mutex lock; /* Protect csi2_fmt, format_mbus, state, hs_settle */
const struct csi2_pix_format *csi2_fmt;
struct v4l2_mbus_framefmt format_mbus[MIPI_CSI2_PADS_NUM];
struct mutex lock; /* Protect state and hs_settle */
u32 state;
u32 hs_settle;
......@@ -304,16 +302,23 @@ static int imx8mq_mipi_csi_clk_get(struct csi_state *state)
return devm_clk_bulk_get(state->dev, CSI2_NUM_CLKS, state->clks);
}
static int imx8mq_mipi_csi_calc_hs_settle(struct csi_state *state)
static int imx8mq_mipi_csi_calc_hs_settle(struct csi_state *state,
struct v4l2_subdev_state *sd_state)
{
s64 link_freq;
u32 lane_rate;
unsigned long esc_clk_rate;
u32 min_ths_settle, max_ths_settle, ths_settle_ns, esc_clk_period_ns;
const struct v4l2_mbus_framefmt *fmt;
const struct csi2_pix_format *csi2_fmt;
/* Calculate the line rate from the pixel rate. */
fmt = v4l2_subdev_get_pad_format(&state->sd, sd_state, MIPI_CSI2_PAD_SINK);
csi2_fmt = find_csi2_format(fmt->code);
link_freq = v4l2_get_link_freq(state->src_sd->ctrl_handler,
state->csi2_fmt->width,
csi2_fmt->width,
state->bus.num_data_lanes * 2);
if (link_freq < 0) {
dev_err(state->dev, "Unable to obtain link frequency: %d\n",
......@@ -362,7 +367,8 @@ static int imx8mq_mipi_csi_calc_hs_settle(struct csi_state *state)
return 0;
}
static int imx8mq_mipi_csi_start_stream(struct csi_state *state)
static int imx8mq_mipi_csi_start_stream(struct csi_state *state,
struct v4l2_subdev_state *sd_state)
{
int ret;
......@@ -371,7 +377,7 @@ static int imx8mq_mipi_csi_start_stream(struct csi_state *state)
return ret;
imx8mq_mipi_csi_set_params(state);
ret = imx8mq_mipi_csi_calc_hs_settle(state);
ret = imx8mq_mipi_csi_calc_hs_settle(state, sd_state);
if (ret)
return ret;
......@@ -397,6 +403,7 @@ static struct csi_state *mipi_sd_to_csi2_state(struct v4l2_subdev *sdev)
static int imx8mq_mipi_csi_s_stream(struct v4l2_subdev *sd, int enable)
{
struct csi_state *state = mipi_sd_to_csi2_state(sd);
struct v4l2_subdev_state *sd_state;
int ret = 0;
if (enable) {
......@@ -413,7 +420,10 @@ static int imx8mq_mipi_csi_s_stream(struct v4l2_subdev *sd, int enable)
goto unlock;
}
ret = imx8mq_mipi_csi_start_stream(state);
sd_state = v4l2_subdev_lock_and_get_active_state(sd);
ret = imx8mq_mipi_csi_start_stream(state, sd_state);
v4l2_subdev_unlock_state(sd_state);
if (ret < 0)
goto unlock;
......@@ -437,29 +447,14 @@ static int imx8mq_mipi_csi_s_stream(struct v4l2_subdev *sd, int enable)
return ret;
}
static struct v4l2_mbus_framefmt *
imx8mq_mipi_csi_get_format(struct csi_state *state,
struct v4l2_subdev_state *sd_state,
enum v4l2_subdev_format_whence which,
unsigned int pad)
{
if (which == V4L2_SUBDEV_FORMAT_TRY)
return v4l2_subdev_get_try_format(&state->sd, sd_state, pad);
return &state->format_mbus[pad];
}
static int imx8mq_mipi_csi_init_cfg(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state)
{
struct csi_state *state = mipi_sd_to_csi2_state(sd);
struct v4l2_mbus_framefmt *fmt_sink;
struct v4l2_mbus_framefmt *fmt_source;
enum v4l2_subdev_format_whence which;
which = sd_state ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
fmt_sink = imx8mq_mipi_csi_get_format(state, sd_state, which,
MIPI_CSI2_PAD_SINK);
fmt_sink = v4l2_subdev_get_pad_format(sd, sd_state, MIPI_CSI2_PAD_SINK);
fmt_source = v4l2_subdev_get_pad_format(sd, sd_state, MIPI_CSI2_PAD_SOURCE);
fmt_sink->code = MEDIA_BUS_FMT_SGBRG10_1X10;
fmt_sink->width = MIPI_CSI2_DEF_PIX_WIDTH;
......@@ -473,38 +468,15 @@ static int imx8mq_mipi_csi_init_cfg(struct v4l2_subdev *sd,
V4L2_MAP_QUANTIZATION_DEFAULT(false, fmt_sink->colorspace,
fmt_sink->ycbcr_enc);
fmt_source = imx8mq_mipi_csi_get_format(state, sd_state, which,
MIPI_CSI2_PAD_SOURCE);
*fmt_source = *fmt_sink;
return 0;
}
static int imx8mq_mipi_csi_get_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *sdformat)
{
struct csi_state *state = mipi_sd_to_csi2_state(sd);
struct v4l2_mbus_framefmt *fmt;
fmt = imx8mq_mipi_csi_get_format(state, sd_state, sdformat->which,
sdformat->pad);
mutex_lock(&state->lock);
sdformat->format = *fmt;
mutex_unlock(&state->lock);
return 0;
}
static int imx8mq_mipi_csi_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_mbus_code_enum *code)
{
struct csi_state *state = mipi_sd_to_csi2_state(sd);
/*
* We can't transcode in any way, the source format is identical
* to the sink format.
......@@ -515,8 +487,7 @@ static int imx8mq_mipi_csi_enum_mbus_code(struct v4l2_subdev *sd,
if (code->index > 0)
return -EINVAL;
fmt = imx8mq_mipi_csi_get_format(state, sd_state, code->which,
code->pad);
fmt = v4l2_subdev_get_pad_format(sd, sd_state, code->pad);
code->code = fmt->code;
return 0;
}
......@@ -536,8 +507,7 @@ static int imx8mq_mipi_csi_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *sdformat)
{
struct csi_state *state = mipi_sd_to_csi2_state(sd);
struct csi2_pix_format const *csi2_fmt;
const struct csi2_pix_format *csi2_fmt;
struct v4l2_mbus_framefmt *fmt;
/*
......@@ -545,7 +515,7 @@ static int imx8mq_mipi_csi_set_fmt(struct v4l2_subdev *sd,
* modified.
*/
if (sdformat->pad == MIPI_CSI2_PAD_SOURCE)
return imx8mq_mipi_csi_get_fmt(sd, sd_state, sdformat);
return v4l2_subdev_get_fmt(sd, sd_state, sdformat);
if (sdformat->pad != MIPI_CSI2_PAD_SINK)
return -EINVAL;
......@@ -554,10 +524,7 @@ static int imx8mq_mipi_csi_set_fmt(struct v4l2_subdev *sd,
if (!csi2_fmt)
csi2_fmt = &imx8mq_mipi_csi_formats[0];
fmt = imx8mq_mipi_csi_get_format(state, sd_state, sdformat->which,
sdformat->pad);
mutex_lock(&state->lock);
fmt = v4l2_subdev_get_pad_format(sd, sd_state, sdformat->pad);
fmt->code = csi2_fmt->code;
fmt->width = sdformat->format.width;
......@@ -566,16 +533,9 @@ static int imx8mq_mipi_csi_set_fmt(struct v4l2_subdev *sd,
sdformat->format = *fmt;
/* Propagate the format from sink to source. */
fmt = imx8mq_mipi_csi_get_format(state, sd_state, sdformat->which,
MIPI_CSI2_PAD_SOURCE);
fmt = v4l2_subdev_get_pad_format(sd, sd_state, MIPI_CSI2_PAD_SOURCE);
*fmt = sdformat->format;
/* Store the CSI2 format descriptor for active formats. */
if (sdformat->which == V4L2_SUBDEV_FORMAT_ACTIVE)
state->csi2_fmt = csi2_fmt;
mutex_unlock(&state->lock);
return 0;
}
......@@ -586,7 +546,7 @@ static const struct v4l2_subdev_video_ops imx8mq_mipi_csi_video_ops = {
static const struct v4l2_subdev_pad_ops imx8mq_mipi_csi_pad_ops = {
.init_cfg = imx8mq_mipi_csi_init_cfg,
.enum_mbus_code = imx8mq_mipi_csi_enum_mbus_code,
.get_fmt = imx8mq_mipi_csi_get_fmt,
.get_fmt = v4l2_subdev_get_fmt,
.set_fmt = imx8mq_mipi_csi_set_fmt,
};
......@@ -714,6 +674,7 @@ static int imx8mq_mipi_csi_pm_resume(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct csi_state *state = mipi_sd_to_csi2_state(sd);
struct v4l2_subdev_state *sd_state;
int ret = 0;
mutex_lock(&state->lock);
......@@ -723,7 +684,9 @@ static int imx8mq_mipi_csi_pm_resume(struct device *dev)
ret = imx8mq_mipi_csi_clk_enable(state);
}
if (state->state & ST_STREAMING) {
ret = imx8mq_mipi_csi_start_stream(state);
sd_state = v4l2_subdev_lock_and_get_active_state(sd);
ret = imx8mq_mipi_csi_start_stream(state, sd_state);
v4l2_subdev_unlock_state(sd_state);
if (ret)
goto unlock;
}
......@@ -803,6 +766,7 @@ static const struct dev_pm_ops imx8mq_mipi_csi_pm_ops = {
static int imx8mq_mipi_csi_subdev_init(struct csi_state *state)
{
struct v4l2_subdev *sd = &state->sd;
int ret;
v4l2_subdev_init(sd, &imx8mq_mipi_csi_subdev_ops);
sd->owner = THIS_MODULE;
......@@ -816,15 +780,22 @@ static int imx8mq_mipi_csi_subdev_init(struct csi_state *state)
sd->dev = state->dev;
state->csi2_fmt = &imx8mq_mipi_csi_formats[0];
imx8mq_mipi_csi_init_cfg(sd, NULL);
state->pads[MIPI_CSI2_PAD_SINK].flags = MEDIA_PAD_FL_SINK
| MEDIA_PAD_FL_MUST_CONNECT;
state->pads[MIPI_CSI2_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE
| MEDIA_PAD_FL_MUST_CONNECT;
return media_entity_pads_init(&sd->entity, MIPI_CSI2_PADS_NUM,
state->pads);
ret = media_entity_pads_init(&sd->entity, MIPI_CSI2_PADS_NUM,
state->pads);
if (ret)
return ret;
ret = v4l2_subdev_init_finalize(sd);
if (ret) {
media_entity_cleanup(&sd->entity);
return ret;
}
return 0;
}
static void imx8mq_mipi_csi_release_icc(struct platform_device *pdev)
......@@ -950,6 +921,7 @@ static int imx8mq_mipi_csi_probe(struct platform_device *pdev)
imx8mq_mipi_csi_runtime_suspend(&pdev->dev);
media_entity_cleanup(&state->sd.entity);
v4l2_subdev_cleanup(&state->sd);
v4l2_async_nf_unregister(&state->notifier);
v4l2_async_nf_cleanup(&state->notifier);
v4l2_async_unregister_subdev(&state->sd);
......@@ -973,6 +945,7 @@ static int imx8mq_mipi_csi_remove(struct platform_device *pdev)
pm_runtime_disable(&pdev->dev);
imx8mq_mipi_csi_runtime_suspend(&pdev->dev);
media_entity_cleanup(&state->sd.entity);
v4l2_subdev_cleanup(&state->sd);
mutex_destroy(&state->lock);
pm_runtime_set_suspended(&pdev->dev);
imx8mq_mipi_csi_release_icc(pdev);
......
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