Replace g/s_mbus_fmt ops with the pad level get/set_fmt operations.
Add media entity initalization and set subdev flags so the host driver
creates a v4l-subdev device node for the driver. A mutex is added for
serializing operations on subdevice node. When setting format
is attempted during streaming EBUSY error code will be returned.
Signed-off-by: Sylwester Nawrocki <s.nawro...@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.p...@samsung.com>
---
drivers/media/video/Kconfig | 2 +-
drivers/media/video/noon010pc30.c | 130 +++++++++++++++++++++++++------------
2 files changed, 90 insertions(+), 42 deletions(-)
diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
index 8de3476..b505120 100644
--- a/drivers/media/video/Kconfig
+++ b/drivers/media/video/Kconfig
@@ -746,7 +746,7 @@ config VIDEO_VIA_CAMERA
config VIDEO_NOON010PC30
tristate "NOON010PC30 CIF camera sensor support"
- depends on I2C && VIDEO_V4L2
+ depends on I2C && VIDEO_V4L2 && EXPERIMENTAL && VIDEO_V4L2_SUBDEV_API
---help---
This driver supports NOON010PC30 CIF camera from Siliconfile
diff --git a/drivers/media/video/noon010pc30.c
b/drivers/media/video/noon010pc30.c
index 50ca097..6920cc4 100644
--- a/drivers/media/video/noon010pc30.c
+++ b/drivers/media/video/noon010pc30.c
@@ -1,7 +1,7 @@
/*
* Driver for SiliconFile NOON010PC30 CIF (1/11") Image Sensor with ISP
*
- * Copyright (C) 2010 Samsung Electronics
+ * Copyright (C) 2010 - 2011 Samsung Electronics
* Contact: Sylwester Nawrocki, <s.nawro...@samsung.com>
*
* Initial register configuration based on a driver authored by
@@ -130,14 +130,19 @@ static const char * const noon010_supply_name[] = {
#define NOON010_NUM_SUPPLIES ARRAY_SIZE(noon010_supply_name)
struct noon010_info {
+ /* Mutex protecting this data structure and subdev operations */
+ struct mutex lock;
struct v4l2_subdev sd;
+ struct media_pad pad;
struct v4l2_ctrl_handler hdl;
const struct noon010pc30_platform_data *pdata;
const struct noon010_format *curr_fmt;
const struct noon010_frmsize *curr_win;
+ struct v4l2_mbus_framefmt format;
unsigned int hflip:1;
unsigned int vflip:1;
unsigned int power:1;
+ unsigned int streaming:1;
u8 i2c_reg_page;
struct regulator_bulk_data supply[NOON010_NUM_SUPPLIES];
u32 gpio_nreset;
@@ -342,7 +347,7 @@ static int noon010_set_params(struct v4l2_subdev *sd)
struct noon010_info *info = to_noon010(sd);
int ret;
- if (!info->curr_win)
+ if (!info->curr_win || !info->power)
return -EINVAL;
ret = cam_i2c_write(sd, VDO_CTL_REG(0), info->curr_win->vid_ctl1);
@@ -354,7 +359,8 @@ static int noon010_set_params(struct v4l2_subdev *sd)
}
/* Find nearest matching image pixel size. */
-static int noon010_try_frame_size(struct v4l2_mbus_framefmt *mf)
+static int noon010_try_frame_size(struct v4l2_mbus_framefmt *mf,
+ const struct noon010_frmsize **size)
{
unsigned int min_err = ~0;
int i = ARRAY_SIZE(noon010_sizes);
@@ -374,6 +380,8 @@ static int noon010_try_frame_size(struct v4l2_mbus_framefmt
*mf)
if (match) {
mf->width = match->width;
mf->height = match->height;
+ if (size)
+ *size = match;
return 0;
}
return -EINVAL;
@@ -464,36 +472,45 @@ static int noon010_s_ctrl(struct v4l2_ctrl *ctrl)
}
}
-static int noon010_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
- enum v4l2_mbus_pixelcode *code)
+static int noon010_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_mbus_code_enum *code)
{
- if (!code || index >= ARRAY_SIZE(noon010_formats))
+ if (!code || code->index >= ARRAY_SIZE(noon010_formats))
return -EINVAL;
- *code = noon010_formats[index].code;
+ code->code = noon010_formats[code->index].code;
return 0;
}
-static int noon010_g_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *mf)
+static int noon010_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
{
struct noon010_info *info = to_noon010(sd);
- int ret;
+ struct v4l2_mbus_framefmt *mf;
- if (!mf)
+ if (fmt->pad != 0)
return -EINVAL;
- if (!info->curr_win || !info->curr_fmt) {
- ret = noon010_set_params(sd);
- if (ret)
- return ret;
+ if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+ if (fh) {
+ mf = v4l2_subdev_get_try_format(fh, 0);
+ fmt->format = *mf;
+ }
+ return 0;
}
+ /* Active format */
+ mf = &fmt->format;
+ mutex_lock(&info->lock);
mf->width = info->curr_win->width;
mf->height = info->curr_win->height;
mf->code = info->curr_fmt->code;
mf->colorspace = info->curr_fmt->colorspace;
- mf->field = V4L2_FIELD_NONE;
+ mutex_unlock(&info->lock);
+ mf->field = V4L2_FIELD_NONE;
+ mf->colorspace = V4L2_COLORSPACE_JPEG;
return 0;
}
@@ -503,38 +520,47 @@ static const struct noon010_format *try_fmt(struct
v4l2_subdev *sd,
{
int i = ARRAY_SIZE(noon010_formats);
- noon010_try_frame_size(mf);
-
- while (i--)
+ while (--i)
if (mf->code == noon010_formats[i].code)
break;
-
mf->code = noon010_formats[i].code;
return &noon010_formats[i];
}
-static int noon010_try_fmt(struct v4l2_subdev *sd,
- struct v4l2_mbus_framefmt *mf)
-{
- if (!sd || !mf)
- return -EINVAL;
-
- try_fmt(sd, mf);
- return 0;
-}
-
-static int noon010_s_fmt(struct v4l2_subdev *sd,
- struct v4l2_mbus_framefmt *mf)
+static int noon010_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
{
struct noon010_info *info = to_noon010(sd);
+ const struct noon010_frmsize *size = NULL;
+ const struct noon010_format *nf;
+ struct v4l2_mbus_framefmt *mf;
+ int ret;
- if (!sd || !mf)
+ if (fmt->pad != 0)
return -EINVAL;
- info->curr_fmt = try_fmt(sd, mf);
+ nf = try_fmt(sd, &fmt->format);
+ noon010_try_frame_size(&fmt->format, &size);
+ fmt->format.colorspace = V4L2_COLORSPACE_JPEG;
- return noon010_set_params(sd);
+ if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+ if (fh) {
+ mf = v4l2_subdev_get_try_format(fh, 0);
+ *mf = fmt->format;
+ }
+ return 0;
+ }
+ mutex_lock(&info->lock);
+ if (info->streaming) {
+ ret = -EBUSY;
+ } else {
+ info->curr_fmt = nf;
+ info->curr_win = size;
+ ret = noon010_set_params(sd);
+ }
+ mutex_unlock(&info->lock);
+ return ret;
}
static int noon010_base_config(struct v4l2_subdev *sd)
@@ -583,6 +609,17 @@ static int noon010_s_power(struct v4l2_subdev *sd, int on)
return ret;
}
+static int noon010_s_stream(struct v4l2_subdev *sd, int on)
+{
+ struct noon010_info *info = to_noon010(sd);
+
+ mutex_lock(&info->lock);
+ info->streaming = on;
+ mutex_unlock(&info->lock);
+
+ return 0;
+}
+
static int noon010_g_chip_ident(struct v4l2_subdev *sd,
struct v4l2_dbg_chip_ident *chip)
{
@@ -617,15 +654,19 @@ static const struct v4l2_subdev_core_ops noon010_core_ops
= {
.log_status = noon010_log_status,
};
-static const struct v4l2_subdev_video_ops noon010_video_ops = {
- .g_mbus_fmt = noon010_g_fmt,
- .s_mbus_fmt = noon010_s_fmt,
- .try_mbus_fmt = noon010_try_fmt,
- .enum_mbus_fmt = noon010_enum_fmt,
+static struct v4l2_subdev_pad_ops noon010_pad_ops = {
+ .enum_mbus_code = noon010_enum_mbus_code,
+ .get_fmt = noon010_get_fmt,
+ .set_fmt = noon010_set_fmt,
+};
+
+static struct v4l2_subdev_video_ops noon010_video_ops = {
+ .s_stream = noon010_s_stream,
};
static const struct v4l2_subdev_ops noon010_ops = {
.core = &noon010_core_ops,
+ .pad = &noon010_pad_ops,
.video = &noon010_video_ops,
};
@@ -666,9 +707,11 @@ static int noon010_probe(struct i2c_client *client,
if (!info)
return -ENOMEM;
+ mutex_init(&info->lock);
sd = &info->sd;
strlcpy(sd->name, MODULE_NAME, sizeof(sd->name));
v4l2_i2c_subdev_init(sd, client, &noon010_ops);
+ sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
v4l2_ctrl_handler_init(&info->hdl, 3);
@@ -720,11 +763,16 @@ static int noon010_probe(struct i2c_client *client,
if (ret)
goto np_reg_err;
+ info->pad.flags = MEDIA_PAD_FL_SOURCE;
+ ret = media_entity_init(&sd->entity, 1, &info->pad, 0);
+ if (ret < 0)
+ goto np_me_err;
+
ret = noon010_detect(client, info);
if (!ret)
return 0;
- /* the sensor detection failed */
+np_me_err:
regulator_bulk_free(NOON010_NUM_SUPPLIES, info->supply);
np_reg_err:
if (gpio_is_valid(info->gpio_nstby))
@@ -751,10 +799,10 @@ static int noon010_remove(struct i2c_client *client)
if (gpio_is_valid(info->gpio_nreset))
gpio_free(info->gpio_nreset);
-
if (gpio_is_valid(info->gpio_nstby))
gpio_free(info->gpio_nstby);
+ media_entity_cleanup(&sd->entity);
kfree(info);
return 0;
}
--
1.7.5.4
--
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