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Message-ID: <20241018153230.235647-7-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: Fri, 18 Oct 2024 16:32:26 +0100
From: Prabhakar <prabhakar.csengg@...il.com>
To: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
Sakari Ailus <sakari.ailus@...ux.intel.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Hans Verkuil <hverkuil-cisco@...all.nl>
Cc: linux-media@...r.kernel.org,
linux-kernel@...r.kernel.org,
linux-renesas-soc@...r.kernel.org,
Prabhakar <prabhakar.csengg@...il.com>,
Biju Das <biju.das.jz@...renesas.com>,
Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH v3 06/10] media: i2c: ov5645: Use subdev active state
From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Port the ov5645 sensor driver to use the subdev active state.
Move all the format configuration to the subdevice state and simplify
the format handling, locking and initialization.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>
---
drivers/media/i2c/ov5645.c | 108 +++++++++++++------------------------
1 file changed, 38 insertions(+), 70 deletions(-)
diff --git a/drivers/media/i2c/ov5645.c b/drivers/media/i2c/ov5645.c
index a7d380692673..357298dab9b4 100644
--- a/drivers/media/i2c/ov5645.c
+++ b/drivers/media/i2c/ov5645.c
@@ -89,7 +89,6 @@ struct ov5645 {
struct v4l2_subdev sd;
struct media_pad pad;
struct v4l2_fwnode_endpoint ep;
- struct v4l2_mbus_framefmt fmt;
struct v4l2_rect crop;
struct clk *xclk;
@@ -850,49 +849,6 @@ static int ov5645_enum_frame_size(struct v4l2_subdev *subdev,
return 0;
}
-static struct v4l2_mbus_framefmt *
-__ov5645_get_pad_format(struct ov5645 *ov5645,
- struct v4l2_subdev_state *sd_state,
- unsigned int pad,
- enum v4l2_subdev_format_whence which)
-{
- switch (which) {
- case V4L2_SUBDEV_FORMAT_TRY:
- return v4l2_subdev_state_get_format(sd_state, pad);
- case V4L2_SUBDEV_FORMAT_ACTIVE:
- return &ov5645->fmt;
- default:
- return NULL;
- }
-}
-
-static int ov5645_get_format(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_format *format)
-{
- struct ov5645 *ov5645 = to_ov5645(sd);
-
- format->format = *__ov5645_get_pad_format(ov5645, sd_state,
- format->pad,
- format->which);
- return 0;
-}
-
-static struct v4l2_rect *
-__ov5645_get_pad_crop(struct ov5645 *ov5645,
- struct v4l2_subdev_state *sd_state,
- unsigned int pad, enum v4l2_subdev_format_whence which)
-{
- switch (which) {
- case V4L2_SUBDEV_FORMAT_TRY:
- return v4l2_subdev_state_get_crop(sd_state, pad);
- case V4L2_SUBDEV_FORMAT_ACTIVE:
- return &ov5645->crop;
- default:
- return NULL;
- }
-}
-
static int ov5645_set_format(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *format)
@@ -903,33 +859,30 @@ static int ov5645_set_format(struct v4l2_subdev *sd,
const struct ov5645_mode_info *new_mode;
int ret;
- __crop = __ov5645_get_pad_crop(ov5645, sd_state, format->pad,
- format->which);
-
+ __crop = v4l2_subdev_state_get_crop(sd_state, 0);
new_mode = v4l2_find_nearest_size(ov5645_mode_info_data,
- ARRAY_SIZE(ov5645_mode_info_data),
- width, height,
- format->format.width, format->format.height);
+ ARRAY_SIZE(ov5645_mode_info_data),
+ width, height, format->format.width,
+ format->format.height);
__crop->width = new_mode->width;
__crop->height = new_mode->height;
if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
- ret = v4l2_ctrl_s_ctrl_int64(ov5645->pixel_clock,
- new_mode->pixel_clock);
+ ret = __v4l2_ctrl_s_ctrl_int64(ov5645->pixel_clock,
+ new_mode->pixel_clock);
if (ret < 0)
return ret;
- ret = v4l2_ctrl_s_ctrl(ov5645->link_freq,
- new_mode->link_freq);
+ ret = __v4l2_ctrl_s_ctrl(ov5645->link_freq,
+ new_mode->link_freq);
if (ret < 0)
return ret;
ov5645->current_mode = new_mode;
}
- __format = __ov5645_get_pad_format(ov5645, sd_state, format->pad,
- format->which);
+ __format = v4l2_subdev_state_get_format(sd_state, 0);
__format->width = __crop->width;
__format->height = __crop->height;
__format->code = MEDIA_BUS_FMT_UYVY8_1X16;
@@ -944,11 +897,15 @@ static int ov5645_set_format(struct v4l2_subdev *sd,
static int ov5645_init_state(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *sd_state)
{
- struct v4l2_subdev_format fmt = { 0 };
-
- fmt.which = sd_state ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
- fmt.format.width = 1920;
- fmt.format.height = 1080;
+ struct v4l2_subdev_format fmt = {
+ .which = V4L2_SUBDEV_FORMAT_TRY,
+ .pad = 0,
+ .format = {
+ .code = MEDIA_BUS_FMT_UYVY8_1X16,
+ .width = ov5645_mode_info_data[1].width,
+ .height = ov5645_mode_info_data[1].height,
+ },
+ };
ov5645_set_format(subdev, sd_state, &fmt);
@@ -959,25 +916,27 @@ static int ov5645_get_selection(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_selection *sel)
{
- struct ov5645 *ov5645 = to_ov5645(sd);
-
if (sel->target != V4L2_SEL_TGT_CROP)
return -EINVAL;
- sel->r = *__ov5645_get_pad_crop(ov5645, sd_state, sel->pad,
- sel->which);
+ sel->r = *v4l2_subdev_state_get_crop(sd_state, 0);
return 0;
}
static int ov5645_s_stream(struct v4l2_subdev *subdev, int enable)
{
struct ov5645 *ov5645 = to_ov5645(subdev);
+ struct v4l2_subdev_state *state;
int ret;
+ state = v4l2_subdev_lock_and_get_active_state(&ov5645->sd);
+
if (enable) {
ret = pm_runtime_resume_and_get(ov5645->dev);
- if (ret < 0)
+ if (ret < 0) {
+ v4l2_subdev_unlock_state(state);
return ret;
+ }
ret = ov5645_set_register_array(ov5645,
ov5645->current_mode->data,
@@ -988,7 +947,7 @@ static int ov5645_s_stream(struct v4l2_subdev *subdev, int enable)
ov5645->current_mode->height);
goto err_rpm_put;
}
- ret = v4l2_ctrl_handler_setup(&ov5645->ctrls);
+ ret = __v4l2_ctrl_handler_setup(&ov5645->ctrls);
if (ret < 0) {
dev_err(ov5645->dev, "could not sync v4l2 controls\n");
goto err_rpm_put;
@@ -1013,6 +972,7 @@ static int ov5645_s_stream(struct v4l2_subdev *subdev, int enable)
goto stream_off_rpm_put;
}
+ v4l2_subdev_unlock_state(state);
return 0;
err_rpm_put:
@@ -1022,6 +982,7 @@ static int ov5645_s_stream(struct v4l2_subdev *subdev, int enable)
stream_off_rpm_put:
pm_runtime_mark_last_busy(ov5645->dev);
pm_runtime_put_autosuspend(ov5645->dev);
+ v4l2_subdev_unlock_state(state);
return ret;
}
@@ -1032,7 +993,7 @@ static const struct v4l2_subdev_video_ops ov5645_video_ops = {
static const struct v4l2_subdev_pad_ops ov5645_subdev_pad_ops = {
.enum_mbus_code = ov5645_enum_mbus_code,
.enum_frame_size = ov5645_enum_frame_size,
- .get_fmt = ov5645_get_format,
+ .get_fmt = v4l2_subdev_get_fmt,
.set_fmt = ov5645_set_format,
.get_selection = ov5645_get_selection,
};
@@ -1222,12 +1183,17 @@ static int ov5645_probe(struct i2c_client *client)
goto power_down;
}
+ ov5645->sd.state_lock = ov5645->ctrls.lock;
+ ret = v4l2_subdev_init_finalize(&ov5645->sd);
+ if (ret < 0) {
+ dev_err_probe(dev, ret, "subdev init error\n");
+ goto power_down;
+ }
+
pm_runtime_set_active(dev);
pm_runtime_get_noresume(dev);
pm_runtime_enable(dev);
- ov5645_init_state(&ov5645->sd, NULL);
-
ret = v4l2_async_register_subdev_sensor(&ov5645->sd);
if (ret < 0) {
dev_err_probe(dev, ret, "could not register v4l2 device\n");
@@ -1244,6 +1210,7 @@ static int ov5645_probe(struct i2c_client *client)
err_pm_runtime:
pm_runtime_disable(dev);
pm_runtime_put_noidle(dev);
+ v4l2_subdev_cleanup(&ov5645->sd);
power_down:
ov5645_set_power_off(dev);
free_entity:
@@ -1260,6 +1227,7 @@ static void ov5645_remove(struct i2c_client *client)
struct ov5645 *ov5645 = to_ov5645(sd);
v4l2_async_unregister_subdev(&ov5645->sd);
+ v4l2_subdev_cleanup(sd);
media_entity_cleanup(&ov5645->sd.entity);
v4l2_ctrl_handler_free(&ov5645->ctrls);
pm_runtime_disable(ov5645->dev);
--
2.43.0
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