From: Philipp Zabel <p.za...@pengutronix.de>
This patch adds userspace V4L2 subdevice API support.
Signed-off-by: Philipp Zabel <p.za...@pengutronix.de>
Signed-off-by: Lucas Stach <l.st...@pengutronix.de>
---
v2: Allow the driver to be built without MEDIA_CONTROLLER and
VIDEO_V4L2_SUBDEV_API, to keep it working for devices that
don't want or need the userspace subdev API.
---
drivers/media/i2c/tvp5150.c | 282 +++++++++++++++++++++++++++++++++++---------
1 file changed, 223 insertions(+), 59 deletions(-)
diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c
index a7495d2856c3..3eab4d918c54 100644
--- a/drivers/media/i2c/tvp5150.c
+++ b/drivers/media/i2c/tvp5150.c
@@ -36,7 +36,9 @@ MODULE_PARM_DESC(debug, "Debug level (0-2)");
struct tvp5150 {
struct v4l2_subdev sd;
+ struct media_pad pad;
struct v4l2_ctrl_handler hdl;
+ struct v4l2_mbus_framefmt format;
struct v4l2_rect rect;
struct regmap *regmap;
@@ -819,38 +821,68 @@ static int tvp5150_enum_mbus_code(struct v4l2_subdev *sd,
return 0;
}
-static int tvp5150_fill_fmt(struct v4l2_subdev *sd,
- struct v4l2_subdev_pad_config *cfg,
- struct v4l2_subdev_format *format)
+static void tvp5150_try_crop(struct tvp5150 *decoder, struct v4l2_rect *rect,
+ v4l2_std_id std)
{
- struct v4l2_mbus_framefmt *f;
- struct tvp5150 *decoder = to_tvp5150(sd);
+ unsigned int hmax;
- if (!format || format->pad)
- return -EINVAL;
+ /* Clamp the crop rectangle boundaries to tvp5150 limits */
+ rect->left = clamp(rect->left, 0, TVP5150_MAX_CROP_LEFT);
+ rect->width = clamp(rect->width,
+ TVP5150_H_MAX - TVP5150_MAX_CROP_LEFT - rect->left,
+ TVP5150_H_MAX - rect->left);
+ rect->top = clamp(rect->top, 0, TVP5150_MAX_CROP_TOP);
- f = &format->format;
+ /* tvp5150 has some special limits */
+ rect->left = clamp(rect->left, 0, TVP5150_MAX_CROP_LEFT);
+ rect->width = clamp_t(unsigned int, rect->width,
+ TVP5150_H_MAX - TVP5150_MAX_CROP_LEFT -
rect->left,
+ TVP5150_H_MAX - rect->left);
+ rect->top = clamp(rect->top, 0, TVP5150_MAX_CROP_TOP);
+
+ /* Calculate height based on current standard */
+ if (std & V4L2_STD_525_60)
+ hmax = TVP5150_V_MAX_525_60;
+ else
+ hmax = TVP5150_V_MAX_OTHERS;
- tvp5150_reset(sd, 0);
+ rect->height = clamp(rect->height,
+ hmax - TVP5150_MAX_CROP_TOP - rect->top,
+ hmax - rect->top);
+}
- f->width = decoder->rect.width;
- f->height = decoder->rect.height;
+static void tvp5150_set_crop(struct tvp5150 *decoder, struct v4l2_rect *rect,
+ v4l2_std_id std)
+{
+ struct regmap *map = decoder->regmap;
+ unsigned int hmax;
- f->code = MEDIA_BUS_FMT_UYVY8_2X8;
- f->field = V4L2_FIELD_SEQ_TB;
- f->colorspace = V4L2_COLORSPACE_SMPTE170M;
+ if (std & V4L2_STD_525_60)
+ hmax = TVP5150_V_MAX_525_60;
+ else
+ hmax = TVP5150_V_MAX_OTHERS;
- v4l2_dbg(1, debug, sd, "width = %d, height = %d\n", f->width,
- f->height);
- return 0;
+ regmap_write(map, TVP5150_VERT_BLANKING_START, rect->top);
+ regmap_write(map, TVP5150_VERT_BLANKING_STOP,
+ rect->top + rect->height - hmax);
+ regmap_write(map, TVP5150_ACT_VD_CROP_ST_MSB,
+ rect->left >> TVP5150_CROP_SHIFT);
+ regmap_write(map, TVP5150_ACT_VD_CROP_ST_LSB,
+ rect->left | (1 << TVP5150_CROP_SHIFT));
+ regmap_write(map, TVP5150_ACT_VD_CROP_STP_MSB,
+ (rect->left + rect->width - TVP5150_MAX_CROP_LEFT) >>
+ TVP5150_CROP_SHIFT);
+ regmap_write(map, TVP5150_ACT_VD_CROP_STP_LSB,
+ rect->left + rect->width - TVP5150_MAX_CROP_LEFT);
+
+ decoder->rect = *rect;
}
static int tvp5150_s_crop(struct v4l2_subdev *sd, const struct v4l2_crop *a)
{
- struct v4l2_rect rect = a->c;
struct tvp5150 *decoder = to_tvp5150(sd);
+ struct v4l2_rect rect = a->c;
v4l2_std_id std;
- unsigned int hmax;
v4l2_dbg(1, debug, sd, "%s left=%d, top=%d, width=%d, height=%d\n",
__func__, rect.left, rect.top, rect.width, rect.height);
@@ -858,42 +890,13 @@ static int tvp5150_s_crop(struct v4l2_subdev *sd, const
struct v4l2_crop *a)
if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
- /* tvp5150 has some special limits */
- rect.left = clamp(rect.left, 0, TVP5150_MAX_CROP_LEFT);
- rect.width = clamp_t(unsigned int, rect.width,
- TVP5150_H_MAX - TVP5150_MAX_CROP_LEFT - rect.left,
- TVP5150_H_MAX - rect.left);
- rect.top = clamp(rect.top, 0, TVP5150_MAX_CROP_TOP);
-
- /* Calculate height based on current standard */
if (decoder->norm == V4L2_STD_ALL)
std = tvp5150_read_std(sd);
else
std = decoder->norm;
- if (std & V4L2_STD_525_60)
- hmax = TVP5150_V_MAX_525_60;
- else
- hmax = TVP5150_V_MAX_OTHERS;
-
- rect.height = clamp_t(unsigned int, rect.height,
- hmax - TVP5150_MAX_CROP_TOP - rect.top,
- hmax - rect.top);
-
- regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_START, rect.top);
- regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_STOP,
- rect.top + rect.height - hmax);
- regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_ST_MSB,
- rect.left >> TVP5150_CROP_SHIFT);
- regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_ST_LSB,
- rect.left | (1 << TVP5150_CROP_SHIFT));
- regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_STP_MSB,
- (rect.left + rect.width - TVP5150_MAX_CROP_LEFT) >>
- TVP5150_CROP_SHIFT);
- regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_STP_LSB,
- rect.left + rect.width - TVP5150_MAX_CROP_LEFT);
-
- decoder->rect = rect;
+ tvp5150_try_crop(decoder, &rect, std);
+ tvp5150_set_crop(decoder, &rect, std);
return 0;
}
@@ -1049,6 +1052,153 @@ static int tvp5150_g_tuner(struct v4l2_subdev *sd,
struct v4l2_tuner *vt)
/* ----------------------------------------------------------------------- */
+static struct v4l2_mbus_framefmt *
+tvp5150_get_pad_format(struct tvp5150 *decoder, struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg, unsigned int pad,
+ enum v4l2_subdev_format_whence which)
+{
+ switch (which) {
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+ case V4L2_SUBDEV_FORMAT_TRY:
+ return v4l2_subdev_get_try_format(sd, cfg, pad);
+#endif
+ case V4L2_SUBDEV_FORMAT_ACTIVE:
+ return &decoder->format;
+ default:
+ return NULL;
+ }
+}
+
+static struct v4l2_rect *
+tvp5150_get_pad_crop(struct tvp5150 *decoder, struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg, unsigned int pad,
+ enum v4l2_subdev_format_whence which)
+{
+ switch (which) {
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+ case V4L2_SUBDEV_FORMAT_TRY:
+ return v4l2_subdev_get_try_crop(sd, cfg, pad);
+#endif
+ case V4L2_SUBDEV_FORMAT_ACTIVE:
+ return &decoder->rect;
+ default:
+ return NULL;
+ }
+}
+
+static int tvp5150_enum_frame_size(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ struct tvp5150 *decoder = to_tvp5150(sd);
+ v4l2_std_id std;
+
+ if (fse->index > 0 || fse->code != MEDIA_BUS_FMT_UYVY8_2X8)
+ return -EINVAL;
+
+ fse->min_width = TVP5150_H_MAX - TVP5150_MAX_CROP_LEFT;
+ fse->max_width = TVP5150_H_MAX;
+
+ /* Calculate height based on current standard */
+ if (decoder->norm == V4L2_STD_ALL)
+ std = tvp5150_read_std(sd);
+ else
+ std = decoder->norm;
+
+ if (std & V4L2_STD_525_60) {
+ fse->min_height = TVP5150_V_MAX_525_60 - TVP5150_MAX_CROP_TOP;
+ fse->max_height = TVP5150_V_MAX_525_60;
+ } else {
+ fse->min_height = TVP5150_V_MAX_OTHERS - TVP5150_MAX_CROP_TOP;
+ fse->max_height = TVP5150_V_MAX_OTHERS;
+ }
+
+ return 0;
+}
+
+static int tvp5150_get_format(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *format)
+{
+ struct tvp5150 *decoder = to_tvp5150(sd);
+ struct v4l2_mbus_framefmt *mbus_format;
+
+ mbus_format = tvp5150_get_pad_format(decoder, sd, cfg,
+ format->pad, format->which);
+ if (!mbus_format)
+ return -ENOTTY;
+
+ format->format = *mbus_format;
+
+ return 0;
+}
+
+static int tvp5150_set_format(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *format)
+{
+ struct tvp5150 *decoder = to_tvp5150(sd);
+ struct v4l2_mbus_framefmt *mbus_format;
+ struct v4l2_rect *crop;
+
+ crop = tvp5150_get_pad_crop(decoder, sd, cfg, format->pad,
+ format->which);
+ mbus_format = tvp5150_get_pad_format(decoder, sd, cfg, format->pad,
+ format->which);
+ if (!crop || !mbus_format)
+ return -ENOTTY;
+
+ mbus_format->width = crop->width;
+ mbus_format->height = crop->height;
+
+ format->format = *mbus_format;
+
+ if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
+ tvp5150_reset(sd, 0);
+
+ v4l2_dbg(1, debug, sd, "width = %d, height = %d\n", mbus_format->width,
+ mbus_format->height);
+
+ return 0;
+}
+
+static void tvp5150_set_default(v4l2_std_id std, struct v4l2_rect *crop,
+ struct v4l2_mbus_framefmt *format)
+{
+ crop->left = 0;
+ crop->width = TVP5150_H_MAX;
+ crop->top = 0;
+ if (std & V4L2_STD_525_60)
+ crop->height = TVP5150_V_MAX_525_60;
+ else
+ crop->height = TVP5150_V_MAX_OTHERS;
+
+ format->width = crop->width;
+ format->height = crop->height;
+ format->code = MEDIA_BUS_FMT_UYVY8_2X8;
+ format->field = V4L2_FIELD_SEQ_TB;
+ format->colorspace = V4L2_COLORSPACE_SMPTE170M;
+}
+
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+static int tvp5150_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+{
+ struct tvp5150 *decoder = to_tvp5150(sd);
+ v4l2_std_id std;
+
+ if (decoder->norm == V4L2_STD_ALL)
+ std = tvp5150_read_std(sd);
+ else
+ std = decoder->norm;
+
+ tvp5150_set_default(std, v4l2_subdev_get_try_crop(fh, 0),
+ v4l2_subdev_get_try_format(fh, 0));
+ return 0;
+}
+#endif
+
+/* ----------------------------------------------------------------------- */
+
static const struct v4l2_ctrl_ops tvp5150_ctrl_ops = {
.s_ctrl = tvp5150_s_ctrl,
};
@@ -1083,8 +1233,9 @@ static const struct v4l2_subdev_vbi_ops tvp5150_vbi_ops =
{
static const struct v4l2_subdev_pad_ops tvp5150_pad_ops = {
.enum_mbus_code = tvp5150_enum_mbus_code,
- .set_fmt = tvp5150_fill_fmt,
- .get_fmt = tvp5150_fill_fmt,
+ .enum_frame_size = tvp5150_enum_frame_size,
+ .get_fmt = tvp5150_get_format,
+ .set_fmt = tvp5150_set_format,
};
static const struct v4l2_subdev_ops tvp5150_ops = {
@@ -1095,6 +1246,11 @@ static const struct v4l2_subdev_ops tvp5150_ops = {
.pad = &tvp5150_pad_ops,
};
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+static const struct v4l2_subdev_internal_ops tvp5150_internal_ops = {
+ .open = tvp5150_open,
+};
+#endif
/****************************************************************************
I2C Client & Driver
@@ -1197,6 +1353,19 @@ static int tvp5150_probe(struct i2c_client *c,
sd = &core->sd;
v4l2_i2c_subdev_init(sd, c, &tvp5150_ops);
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+ sd->internal_ops = &tvp5150_internal_ops;
+ sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+
+#endif
+#ifdef CONFIG_MEDIA_CONTROLLER
+ sd->entity.flags |= MEDIA_ENT_T_V4L2_SUBDEV_DECODER;
+ core->pad.flags = MEDIA_PAD_FL_SOURCE;
+ res = media_entity_init(&sd->entity, 1, &core->pad, 0);
+ if (res < 0)
+ return res;
+#endif
+
/*
* Read consequent registers - TVP5150_MSB_DEV_ID, TVP5150_LSB_DEV_ID,
* TVP5150_ROM_MAJOR_VER, TVP5150_ROM_MINOR_VER
@@ -1250,14 +1419,9 @@ static int tvp5150_probe(struct i2c_client *c,
v4l2_ctrl_handler_setup(&core->hdl);
/* Default is no cropping */
- core->rect.top = 0;
- if (tvp5150_read_std(sd) & V4L2_STD_525_60)
- core->rect.height = TVP5150_V_MAX_525_60;
- else
- core->rect.height = TVP5150_V_MAX_OTHERS;
- core->rect.left = 0;
- core->rect.width = TVP5150_H_MAX;
+ tvp5150_set_default(tvp5150_read_std(sd), &core->rect, &core->format);
+ sd->dev = &c->dev;
res = v4l2_async_register_subdev(sd);
if (res < 0)
goto err;
--
2.6.2
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