mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 01:10:04 +00:00
media: i2c: imx290: Use V4L2 subdev active state
Use the V4L2 subdev active state API to store the active format. This simplifies the driver not only by dropping the imx290 current_format field, but it also allows dropping the imx290 lock, replaced with the state lock. The lock check in imx290_ctrl_update() can be dropped as imx290_set_fmt() can't be called anywmore with which set to ACTIVE before controls are initialized. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Alexander Stein <alexander.stein@ew.tq-group.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:
parent
e5d363ca82
commit
a2514b9a63
1 changed files with 65 additions and 89 deletions
|
@ -177,12 +177,12 @@ struct imx290 {
|
|||
struct clk *xclk;
|
||||
struct regmap *regmap;
|
||||
u8 nlanes;
|
||||
u8 bpp;
|
||||
|
||||
struct v4l2_subdev sd;
|
||||
struct media_pad pad;
|
||||
struct v4l2_mbus_framefmt current_format;
|
||||
|
||||
const struct imx290_mode *current_mode;
|
||||
u8 bpp;
|
||||
|
||||
struct regulator_bulk_data supplies[IMX290_NUM_SUPPLIES];
|
||||
struct gpio_desc *rst_gpio;
|
||||
|
@ -192,8 +192,6 @@ struct imx290 {
|
|||
struct v4l2_ctrl *pixel_rate;
|
||||
struct v4l2_ctrl *hblank;
|
||||
struct v4l2_ctrl *vblank;
|
||||
|
||||
struct mutex lock;
|
||||
};
|
||||
|
||||
static inline struct imx290 *to_imx290(struct v4l2_subdev *_sd)
|
||||
|
@ -524,13 +522,14 @@ static int imx290_set_black_level(struct imx290 *imx290,
|
|||
black_level >> (16 - imx290->bpp), err);
|
||||
}
|
||||
|
||||
static int imx290_write_current_format(struct imx290 *imx290)
|
||||
static int imx290_setup_format(struct imx290 *imx290,
|
||||
const struct v4l2_mbus_framefmt *format)
|
||||
{
|
||||
const struct imx290_regval *regs;
|
||||
unsigned int num_regs;
|
||||
int ret;
|
||||
|
||||
switch (imx290->current_format.code) {
|
||||
switch (format->code) {
|
||||
case MEDIA_BUS_FMT_SRGGB10_1X10:
|
||||
regs = imx290_10bit_settings;
|
||||
num_regs = ARRAY_SIZE(imx290_10bit_settings);
|
||||
|
@ -563,6 +562,15 @@ static int imx290_set_ctrl(struct v4l2_ctrl *ctrl)
|
|||
struct imx290, ctrls);
|
||||
int ret = 0;
|
||||
|
||||
/*
|
||||
* Return immediately for controls that don't need to be applied to the
|
||||
* device. Those controls are modified in imx290_ctrl_update(), which
|
||||
* is called at probe time before runtime PM is initialized, so we
|
||||
* can't proceed to the pm_runtime_get_if_in_use() call below.
|
||||
*/
|
||||
if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY)
|
||||
return 0;
|
||||
|
||||
/* V4L2 controls values will be applied only when power is already up */
|
||||
if (!pm_runtime_get_if_in_use(imx290->dev))
|
||||
return 0;
|
||||
|
@ -592,6 +600,7 @@ static int imx290_set_ctrl(struct v4l2_ctrl *ctrl)
|
|||
&ret);
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
ret = -EINVAL;
|
||||
break;
|
||||
|
@ -625,13 +634,6 @@ static void imx290_ctrl_update(struct imx290 *imx290,
|
|||
s64 link_freq = imx290_link_freqs_ptr(imx290)[mode->link_freq_index];
|
||||
u64 pixel_rate;
|
||||
|
||||
/*
|
||||
* This function may be called from imx290_set_fmt() before controls
|
||||
* get created by imx290_ctrl_init(). Return immediately in that case.
|
||||
*/
|
||||
if (!imx290->ctrls.lock)
|
||||
return;
|
||||
|
||||
/* pixel rate = link_freq * 2 * nr_of_lanes / bits_per_sample */
|
||||
pixel_rate = link_freq * 2 * imx290->nlanes;
|
||||
do_div(pixel_rate, imx290->bpp);
|
||||
|
@ -653,7 +655,6 @@ static int imx290_ctrl_init(struct imx290 *imx290)
|
|||
return ret;
|
||||
|
||||
v4l2_ctrl_handler_init(&imx290->ctrls, 9);
|
||||
imx290->ctrls.lock = &imx290->lock;
|
||||
|
||||
/*
|
||||
* The sensor has an analog gain and a digital gain, both controlled
|
||||
|
@ -718,10 +719,6 @@ static int imx290_ctrl_init(struct imx290 *imx290)
|
|||
return ret;
|
||||
}
|
||||
|
||||
mutex_lock(imx290->ctrls.lock);
|
||||
imx290_ctrl_update(imx290, imx290->current_mode);
|
||||
mutex_unlock(imx290->ctrls.lock);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -730,8 +727,10 @@ static int imx290_ctrl_init(struct imx290 *imx290)
|
|||
*/
|
||||
|
||||
/* Start streaming */
|
||||
static int imx290_start_streaming(struct imx290 *imx290)
|
||||
static int imx290_start_streaming(struct imx290 *imx290,
|
||||
struct v4l2_subdev_state *state)
|
||||
{
|
||||
const struct v4l2_mbus_framefmt *format;
|
||||
int ret;
|
||||
|
||||
/* Set init register settings */
|
||||
|
@ -744,7 +743,8 @@ static int imx290_start_streaming(struct imx290 *imx290)
|
|||
}
|
||||
|
||||
/* Apply the register values related to current frame format */
|
||||
ret = imx290_write_current_format(imx290);
|
||||
format = v4l2_subdev_get_pad_format(&imx290->sd, state, 0);
|
||||
ret = imx290_setup_format(imx290, format);
|
||||
if (ret < 0) {
|
||||
dev_err(imx290->dev, "Could not set frame format\n");
|
||||
return ret;
|
||||
|
@ -764,7 +764,7 @@ static int imx290_start_streaming(struct imx290 *imx290)
|
|||
return ret;
|
||||
|
||||
/* Apply customized values from user */
|
||||
ret = v4l2_ctrl_handler_setup(imx290->sd.ctrl_handler);
|
||||
ret = __v4l2_ctrl_handler_setup(imx290->sd.ctrl_handler);
|
||||
if (ret) {
|
||||
dev_err(imx290->dev, "Could not sync v4l2 controls\n");
|
||||
return ret;
|
||||
|
@ -793,39 +793,32 @@ static int imx290_stop_streaming(struct imx290 *imx290)
|
|||
static int imx290_set_stream(struct v4l2_subdev *sd, int enable)
|
||||
{
|
||||
struct imx290 *imx290 = to_imx290(sd);
|
||||
struct v4l2_subdev_state *state;
|
||||
int ret = 0;
|
||||
|
||||
state = v4l2_subdev_lock_and_get_active_state(sd);
|
||||
|
||||
if (enable) {
|
||||
ret = pm_runtime_resume_and_get(imx290->dev);
|
||||
if (ret < 0)
|
||||
goto unlock_and_return;
|
||||
goto unlock;
|
||||
|
||||
ret = imx290_start_streaming(imx290);
|
||||
ret = imx290_start_streaming(imx290, state);
|
||||
if (ret) {
|
||||
dev_err(imx290->dev, "Start stream failed\n");
|
||||
pm_runtime_put(imx290->dev);
|
||||
goto unlock_and_return;
|
||||
goto unlock;
|
||||
}
|
||||
} else {
|
||||
imx290_stop_streaming(imx290);
|
||||
pm_runtime_put(imx290->dev);
|
||||
}
|
||||
|
||||
unlock_and_return:
|
||||
|
||||
unlock:
|
||||
v4l2_subdev_unlock_state(state);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static struct v4l2_mbus_framefmt *
|
||||
imx290_get_pad_format(struct imx290 *imx290, struct v4l2_subdev_state *state,
|
||||
u32 which)
|
||||
{
|
||||
if (which == V4L2_SUBDEV_FORMAT_ACTIVE)
|
||||
return &imx290->current_format;
|
||||
else
|
||||
return v4l2_subdev_get_try_format(&imx290->sd, state, 0);
|
||||
}
|
||||
|
||||
static int imx290_enum_mbus_code(struct v4l2_subdev *sd,
|
||||
struct v4l2_subdev_state *sd_state,
|
||||
struct v4l2_subdev_mbus_code_enum *code)
|
||||
|
@ -860,23 +853,6 @@ static int imx290_enum_frame_size(struct v4l2_subdev *sd,
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int imx290_get_fmt(struct v4l2_subdev *sd,
|
||||
struct v4l2_subdev_state *sd_state,
|
||||
struct v4l2_subdev_format *fmt)
|
||||
{
|
||||
struct imx290 *imx290 = to_imx290(sd);
|
||||
struct v4l2_mbus_framefmt *framefmt;
|
||||
|
||||
mutex_lock(&imx290->lock);
|
||||
|
||||
framefmt = imx290_get_pad_format(imx290, sd_state, fmt->which);
|
||||
fmt->format = *framefmt;
|
||||
|
||||
mutex_unlock(&imx290->lock);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int imx290_set_fmt(struct v4l2_subdev *sd,
|
||||
struct v4l2_subdev_state *sd_state,
|
||||
struct v4l2_subdev_format *fmt)
|
||||
|
@ -886,8 +862,6 @@ static int imx290_set_fmt(struct v4l2_subdev *sd,
|
|||
struct v4l2_mbus_framefmt *format;
|
||||
unsigned int i;
|
||||
|
||||
mutex_lock(&imx290->lock);
|
||||
|
||||
mode = v4l2_find_nearest_size(imx290_modes_ptr(imx290),
|
||||
imx290_modes_num(imx290), width, height,
|
||||
fmt->format.width, fmt->format.height);
|
||||
|
@ -905,7 +879,7 @@ static int imx290_set_fmt(struct v4l2_subdev *sd,
|
|||
fmt->format.code = imx290_formats[i].code;
|
||||
fmt->format.field = V4L2_FIELD_NONE;
|
||||
|
||||
format = imx290_get_pad_format(imx290, sd_state, fmt->which);
|
||||
format = v4l2_subdev_get_pad_format(sd, sd_state, 0);
|
||||
|
||||
if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
|
||||
imx290->current_mode = mode;
|
||||
|
@ -916,8 +890,6 @@ static int imx290_set_fmt(struct v4l2_subdev *sd,
|
|||
|
||||
*format = fmt->format;
|
||||
|
||||
mutex_unlock(&imx290->lock);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -925,14 +897,11 @@ static int imx290_get_selection(struct v4l2_subdev *sd,
|
|||
struct v4l2_subdev_state *sd_state,
|
||||
struct v4l2_subdev_selection *sel)
|
||||
{
|
||||
struct imx290 *imx290 = to_imx290(sd);
|
||||
struct v4l2_mbus_framefmt *format;
|
||||
|
||||
switch (sel->target) {
|
||||
case V4L2_SEL_TGT_CROP: {
|
||||
format = imx290_get_pad_format(imx290, sd_state, sel->which);
|
||||
|
||||
mutex_lock(&imx290->lock);
|
||||
format = v4l2_subdev_get_pad_format(sd, sd_state, 0);
|
||||
|
||||
sel->r.top = IMX920_PIXEL_ARRAY_MARGIN_TOP
|
||||
+ (IMX290_PIXEL_ARRAY_RECORDING_HEIGHT - format->height) / 2;
|
||||
|
@ -941,7 +910,6 @@ static int imx290_get_selection(struct v4l2_subdev *sd,
|
|||
sel->r.width = format->width;
|
||||
sel->r.height = format->height;
|
||||
|
||||
mutex_unlock(&imx290->lock);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -970,11 +938,13 @@ static int imx290_get_selection(struct v4l2_subdev *sd,
|
|||
static int imx290_entity_init_cfg(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,
|
||||
.format = {
|
||||
.width = 1920,
|
||||
.height = 1080,
|
||||
},
|
||||
};
|
||||
|
||||
imx290_set_fmt(subdev, sd_state, &fmt);
|
||||
|
||||
|
@ -989,7 +959,7 @@ static const struct v4l2_subdev_pad_ops imx290_pad_ops = {
|
|||
.init_cfg = imx290_entity_init_cfg,
|
||||
.enum_mbus_code = imx290_enum_mbus_code,
|
||||
.enum_frame_size = imx290_enum_frame_size,
|
||||
.get_fmt = imx290_get_fmt,
|
||||
.get_fmt = v4l2_subdev_get_fmt,
|
||||
.set_fmt = imx290_set_fmt,
|
||||
.get_selection = imx290_get_selection,
|
||||
};
|
||||
|
@ -1008,18 +978,8 @@ static int imx290_subdev_init(struct imx290 *imx290)
|
|||
struct i2c_client *client = to_i2c_client(imx290->dev);
|
||||
int ret;
|
||||
|
||||
/*
|
||||
* Initialize the frame format. In particular, imx290->current_mode
|
||||
* and imx290->bpp are set to defaults: imx290_calc_pixel_rate() call
|
||||
* below relies on these fields.
|
||||
*/
|
||||
imx290_entity_init_cfg(&imx290->sd, NULL);
|
||||
|
||||
ret = imx290_ctrl_init(imx290);
|
||||
if (ret < 0) {
|
||||
dev_err(imx290->dev, "Control initialization error %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
imx290->current_mode = &imx290_modes_ptr(imx290)[0];
|
||||
imx290->bpp = imx290_formats[0].bpp;
|
||||
|
||||
v4l2_i2c_subdev_init(&imx290->sd, client, &imx290_subdev_ops);
|
||||
imx290->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
|
||||
|
@ -1031,15 +991,37 @@ static int imx290_subdev_init(struct imx290 *imx290)
|
|||
ret = media_entity_pads_init(&imx290->sd.entity, 1, &imx290->pad);
|
||||
if (ret < 0) {
|
||||
dev_err(imx290->dev, "Could not register media entity\n");
|
||||
v4l2_ctrl_handler_free(&imx290->ctrls);
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = imx290_ctrl_init(imx290);
|
||||
if (ret < 0) {
|
||||
dev_err(imx290->dev, "Control initialization error %d\n", ret);
|
||||
goto err_media;
|
||||
}
|
||||
|
||||
imx290->sd.state_lock = imx290->ctrls.lock;
|
||||
|
||||
ret = v4l2_subdev_init_finalize(&imx290->sd);
|
||||
if (ret < 0) {
|
||||
dev_err(imx290->dev, "subdev initialization error %d\n", ret);
|
||||
goto err_ctrls;
|
||||
}
|
||||
|
||||
imx290_ctrl_update(imx290, imx290->current_mode);
|
||||
|
||||
return 0;
|
||||
|
||||
err_ctrls:
|
||||
v4l2_ctrl_handler_free(&imx290->ctrls);
|
||||
err_media:
|
||||
media_entity_cleanup(&imx290->sd.entity);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void imx290_subdev_cleanup(struct imx290 *imx290)
|
||||
{
|
||||
v4l2_subdev_cleanup(&imx290->sd);
|
||||
media_entity_cleanup(&imx290->sd.entity);
|
||||
v4l2_ctrl_handler_free(&imx290->ctrls);
|
||||
}
|
||||
|
@ -1270,12 +1252,10 @@ static int imx290_probe(struct i2c_client *client)
|
|||
if (ret)
|
||||
return ret;
|
||||
|
||||
mutex_init(&imx290->lock);
|
||||
|
||||
/* Initialize and register subdev. */
|
||||
ret = imx290_subdev_init(imx290);
|
||||
if (ret)
|
||||
goto err_mutex;
|
||||
return ret;
|
||||
|
||||
ret = v4l2_async_register_subdev(&imx290->sd);
|
||||
if (ret < 0) {
|
||||
|
@ -1298,8 +1278,6 @@ static int imx290_probe(struct i2c_client *client)
|
|||
|
||||
err_subdev:
|
||||
imx290_subdev_cleanup(imx290);
|
||||
err_mutex:
|
||||
mutex_destroy(&imx290->lock);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
@ -1312,8 +1290,6 @@ static void imx290_remove(struct i2c_client *client)
|
|||
v4l2_async_unregister_subdev(sd);
|
||||
imx290_subdev_cleanup(imx290);
|
||||
|
||||
mutex_destroy(&imx290->lock);
|
||||
|
||||
pm_runtime_disable(imx290->dev);
|
||||
if (!pm_runtime_status_suspended(imx290->dev))
|
||||
imx290_power_off(imx290->dev);
|
||||
|
|
Loading…
Reference in a new issue