Initialize and use the subdev active state to store the subdevice
format.
This simplifies the implementation of the get_fmt and set_fmt pad
operations.
Signed-off-by: Jacopo Mondi <jacopo.mondi@xxxxxxxxxxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
Tested-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
---
drivers/media/i2c/adv748x/adv748x-csi2.c | 107 +++++++++--------------
drivers/media/i2c/adv748x/adv748x.h | 1 -
2 files changed, 42 insertions(+), 66 deletions(-)
diff --git a/drivers/media/i2c/adv748x/adv748x-csi2.c b/drivers/media/i2c/adv748x/adv748x-csi2.c
index 0cdb397d9e0a..ebe7da8ebed7 100644
--- a/drivers/media/i2c/adv748x/adv748x-csi2.c
+++ b/drivers/media/i2c/adv748x/adv748x-csi2.c
@@ -6,7 +6,6 @@
*/
#include <linux/module.h>
-#include <linux/mutex.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
@@ -68,7 +67,33 @@ static int adv748x_csi2_register_link(struct adv748x_csi2 *tx,
/* -----------------------------------------------------------------------------
* v4l2_subdev_internal_ops
- *
+ */
+
+static int adv748x_csi2_init_state(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state)
+{
+ static const struct v4l2_mbus_framefmt adv748x_csi2_default_fmt = {
+ .width = 1280,
+ .height = 720,
+ .code = MEDIA_BUS_FMT_UYVY8_1X16,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .field = V4L2_FIELD_NONE,
+ .ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT,
+ .quantization = V4L2_QUANTIZATION_DEFAULT,
+ .xfer_func = V4L2_XFER_FUNC_DEFAULT,
+ };
+ struct v4l2_mbus_framefmt *fmt;
+
+ fmt = v4l2_subdev_state_get_format(state, ADV748X_CSI2_SINK);
+ *fmt = adv748x_csi2_default_fmt;
+
+ fmt = v4l2_subdev_state_get_format(state, ADV748X_CSI2_SOURCE);
+ *fmt = adv748x_csi2_default_fmt;
+
+ return 0;
+}
+
+/*
* We use the internal registered operation to be able to ensure that our
* incremental subdevices (not connected in the forward path) can be registered
* against the resulting video path and media device.
@@ -118,6 +143,7 @@ static int adv748x_csi2_registered(struct v4l2_subdev *sd)
}
static const struct v4l2_subdev_internal_ops adv748x_csi2_internal_ops = {
+ .init_state = adv748x_csi2_init_state,
.registered = adv748x_csi2_registered,
};
@@ -183,41 +209,6 @@ static int adv748x_csi2_enum_mbus_code(struct v4l2_subdev *sd,
return 0;
}
-static struct v4l2_mbus_framefmt *
-adv748x_csi2_get_pad_format(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- unsigned int pad, u32 which)
-{
- struct adv748x_csi2 *tx = adv748x_sd_to_csi2(sd);
-
- if (which == V4L2_SUBDEV_FORMAT_TRY)
- return v4l2_subdev_state_get_format(sd_state, pad);
-
- return &tx->format;
-}
-
-static int adv748x_csi2_get_format(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_format *sdformat)
-{
- struct adv748x_csi2 *tx = adv748x_sd_to_csi2(sd);
- struct adv748x_state *state = tx->state;
- struct v4l2_mbus_framefmt *mbusformat;
-
- mbusformat = adv748x_csi2_get_pad_format(sd, sd_state, sdformat->pad,
- sdformat->which);
- if (!mbusformat)
- return -EINVAL;
-
- mutex_lock(&state->mutex);
-
- sdformat->format = *mbusformat;
-
- mutex_unlock(&state->mutex);
-
- return 0;
-}
-
static bool adv748x_csi2_is_fmt_supported(struct adv748x_csi2 *tx, u32 code)
{
const unsigned int *codes = is_txa(tx) ?
@@ -239,9 +230,10 @@ static int adv748x_csi2_set_format(struct v4l2_subdev *sd,
struct v4l2_subdev_format *sdformat)
{
struct adv748x_csi2 *tx = adv748x_sd_to_csi2(sd);
- struct adv748x_state *state = tx->state;
struct v4l2_mbus_framefmt *mbusformat;
- int ret = 0;
+
+ if (sdformat->pad == ADV748X_CSI2_SOURCE)
+ return v4l2_subdev_get_fmt(sd, sd_state, sdformat);
/*
* Make sure the format is supported, if not default it to
@@ -250,34 +242,14 @@ static int adv748x_csi2_set_format(struct v4l2_subdev *sd,
if (!adv748x_csi2_is_fmt_supported(tx, sdformat->format.code))
sdformat->format.code = MEDIA_BUS_FMT_UYVY8_1X16;
- mbusformat = adv748x_csi2_get_pad_format(sd, sd_state, sdformat->pad,
- sdformat->which);
- if (!mbusformat)
- return -EINVAL;
-
- mutex_lock(&state->mutex);
-
- if (sdformat->pad == ADV748X_CSI2_SOURCE) {
- const struct v4l2_mbus_framefmt *sink_fmt;
-
- sink_fmt = adv748x_csi2_get_pad_format(sd, sd_state,
- ADV748X_CSI2_SINK,
- sdformat->which);
-
- if (!sink_fmt) {
- ret = -EINVAL;
- goto unlock;
- }
-
- sdformat->format = *sink_fmt;
- }
-
+ mbusformat = v4l2_subdev_state_get_format(sd_state, sdformat->pad);
*mbusformat = sdformat->format;
-unlock:
- mutex_unlock(&state->mutex);
+ /* Propagate format to the source pad. */
+ mbusformat = v4l2_subdev_state_get_format(sd_state, ADV748X_CSI2_SOURCE);
+ *mbusformat = sdformat->format;
- return ret;
+ return 0;
}
static int adv748x_csi2_get_mbus_config(struct v4l2_subdev *sd, unsigned int pad,
@@ -296,7 +268,7 @@ static int adv748x_csi2_get_mbus_config(struct v4l2_subdev *sd, unsigned int pad
static const struct v4l2_subdev_pad_ops adv748x_csi2_pad_ops = {
.enum_mbus_code = adv748x_csi2_enum_mbus_code,
- .get_fmt = adv748x_csi2_get_format,
+ .get_fmt = v4l2_subdev_get_fmt,
.set_fmt = adv748x_csi2_set_format,
.get_mbus_config = adv748x_csi2_get_mbus_config,
};
@@ -388,6 +360,11 @@ int adv748x_csi2_init(struct adv748x_state *state, struct adv748x_csi2 *tx)
if (ret)
goto err_cleanup_subdev;
+ tx->sd.state_lock = &state->mutex;
+ ret = v4l2_subdev_init_finalize(&tx->sd);
+ if (ret)
+ goto err_free_ctrl;
+
ret = v4l2_async_register_subdev(&tx->sd);
if (ret)
goto err_free_ctrl;
diff --git a/drivers/media/i2c/adv748x/adv748x.h b/drivers/media/i2c/adv748x/adv748x.h
index d2b5e722e997..9bc0121d0eff 100644
--- a/drivers/media/i2c/adv748x/adv748x.h
+++ b/drivers/media/i2c/adv748x/adv748x.h
@@ -75,7 +75,6 @@ enum adv748x_csi2_pads {
struct adv748x_csi2 {
struct adv748x_state *state;
- struct v4l2_mbus_framefmt format;
unsigned int page;
unsigned int port;
unsigned int num_lanes;
--
2.45.2
