[media] V4L: mt9m001: support the new mbus-config subdev ops

Extend the driver to also support [gs]_mbus_config() subdevice video
operations.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/mt9m001.c b/drivers/media/video/mt9m001.c
index 4da9cca939c121999908d021d66d169a20df70b7..7618b3c2fce0384cbd1a51039071128a52475f2c 100644 (file)
--- a/drivers/media/video/mt9m001.c
+++ b/drivers/media/video/mt9m001.c
@@ -13,9 +13,10 @@
 #include <linux/i2c.h>
 #include <linux/log2.h>
 
+#include <media/soc_camera.h>
+#include <media/soc_mediabus.h>
 #include <media/v4l2-subdev.h>
 #include <media/v4l2-chip-ident.h>
-#include <media/soc_camera.h>
 
 /*
  * mt9m001 i2c address 0x5d
@@ -710,6 +711,41 @@ static int mt9m001_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
        return 0;
 }
 
+static int mt9m001_g_mbus_config(struct v4l2_subdev *sd,
+                               struct v4l2_mbus_config *cfg)
+{
+       struct i2c_client *client = v4l2_get_subdevdata(sd);
+       struct soc_camera_device *icd = client->dev.platform_data;
+       struct soc_camera_link *icl = to_soc_camera_link(icd);
+
+       /* MT9M001 has all capture_format parameters fixed */
+       cfg->flags = V4L2_MBUS_PCLK_SAMPLE_FALLING |
+               V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_HIGH |
+               V4L2_MBUS_DATA_ACTIVE_HIGH | V4L2_MBUS_MASTER;
+       cfg->type = V4L2_MBUS_PARALLEL;
+       cfg->flags = soc_camera_apply_board_flags(icl, cfg);
+
+       return 0;
+}
+
+static int mt9m001_s_mbus_config(struct v4l2_subdev *sd,
+                               const struct v4l2_mbus_config *cfg)
+{
+       struct i2c_client *client = v4l2_get_subdevdata(sd);
+       struct soc_camera_device *icd = client->dev.platform_data;
+       struct soc_camera_link *icl = to_soc_camera_link(icd);
+       unsigned int bps = soc_mbus_get_fmtdesc(icd->current_fmt->code)->bits_per_sample;
+
+       if (icl->set_bus_param)
+               return icl->set_bus_param(icl, 1 << (bps - 1));
+
+       /*
+        * Without board specific bus width settings we only support the
+        * sensors native bus width
+        */
+       return bps == 10 ? 0 : -EINVAL;
+}
+
 static struct v4l2_subdev_video_ops mt9m001_subdev_video_ops = {
        .s_stream       = mt9m001_s_stream,
        .s_mbus_fmt     = mt9m001_s_fmt,
@@ -719,6 +755,8 @@ static struct v4l2_subdev_video_ops mt9m001_subdev_video_ops = {
        .g_crop         = mt9m001_g_crop,
        .cropcap        = mt9m001_cropcap,
        .enum_mbus_fmt  = mt9m001_enum_fmt,
+       .g_mbus_config  = mt9m001_g_mbus_config,
+       .s_mbus_config  = mt9m001_s_mbus_config,
 };
 
 static struct v4l2_subdev_sensor_ops mt9m001_subdev_sensor_ops = {