[PATCH 08/22] [media] tvp5150: trigger autodetection on subdev open to reset cropping

[Marco Felsch]

From: Philipp Zabel <p.za...@pengutronix.de>

If cropping isn't set explicitly by userspace, reset it to the maximum
possible rectangle in subdevice open if a standard change is detected.

Signed-off-by: Philipp Zabel <p.za...@pengutronix.de>
[m.fel...@pengutronix.de: move code from internal_ops.open() to 
pad_ops.init_cfg()]
[m.fel...@pengutronix.de: make use of tvp5150_set_default() helper]
Signed-off-by: Marco Felsch <m.fel...@pengutronix.de>
---
 drivers/media/i2c/tvp5150.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c
index c73536cfcc62..dbfc56c87434 100644
--- a/drivers/media/i2c/tvp5150.c
+++ b/drivers/media/i2c/tvp5150.c
@@ -55,6 +55,7 @@ struct tvp5150 {
        struct regmap *regmap;
 
        v4l2_std_id norm;       /* Current set standard */
+       v4l2_std_id detected_norm;
        u32 input;
        u32 output;
        int enable;
@@ -1034,6 +1035,27 @@ static int tvp5150_g_mbus_config(struct v4l2_subdev *sd,
 /****************************************************************************
                        V4L2 subdev pad ops
  ****************************************************************************/
+static int tvp5150_init_cfg(struct v4l2_subdev *sd,
+                           struct v4l2_subdev_pad_config *cfg)
+{
+       struct tvp5150 *decoder = to_tvp5150(sd);
+       v4l2_std_id std;
+
+       /*
+        * Reset selection to maximum on subdev_open() if autodetection is on
+        * and a standard change is detected.
+        */
+       if (decoder->norm == V4L2_STD_ALL) {
+               std = tvp5150_read_std(sd);
+               if (std != decoder->detected_norm) {
+                       decoder->detected_norm = std;
+                       tvp5150_set_default(std, &decoder->rect);
+               }
+       }
+
+       return 0;
+}
+
 static int tvp5150_enum_mbus_code(struct v4l2_subdev *sd,
                struct v4l2_subdev_pad_config *cfg,
                struct v4l2_subdev_mbus_code_enum *code)
@@ -1308,6 +1330,7 @@ static const struct v4l2_subdev_vbi_ops tvp5150_vbi_ops = 
{
 };
 
 static const struct v4l2_subdev_pad_ops tvp5150_pad_ops = {
+       .init_cfg = tvp5150_init_cfg,
        .enum_mbus_code = tvp5150_enum_mbus_code,
        .enum_frame_size = tvp5150_enum_frame_size,
        .set_fmt = tvp5150_fill_fmt,
@@ -1640,6 +1663,7 @@ static int tvp5150_probe(struct i2c_client *c,
                return res;
 
        core->norm = V4L2_STD_ALL;      /* Default is autodetect */
+       core->detected_norm = V4L2_STD_UNKNOWN;
        core->input = TVP5150_COMPOSITE1;
        core->enable = true;
 
-- 
2.17.1