[media] V4L: tw9910: 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>

1 files changed, 47 insertions, 2 deletions

diff --git a/drivers/media/video/tw9910.c b/drivers/media/video/tw9910.c
index 686512eefed8..4f9fbf2ba35d 100644
--- a/drivers/media/video/tw9910.c
+++ b/drivers/media/video/tw9910.c
@@ -23,10 +23,12 @@
 #include <linux/kernel.h>
 #include <linux/delay.h>
 #include <linux/videodev2.h>
-#include <media/v4l2-chip-ident.h>
-#include <media/v4l2-subdev.h>
+
 #include <media/soc_camera.h>
+#include <media/soc_mediabus.h>
 #include <media/tw9910.h>
+#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-subdev.h>
 
 #define GET_ID(val)  ((val & 0xF8) >> 3)
 #define GET_REV(val) (val & 0x07)
@@ -862,6 +864,47 @@ static int tw9910_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
         return 0;
 }
 
+static int tw9910_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);
+
+        cfg->flags = V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_MASTER |
+                V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW |
+                V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_LOW |
+                V4L2_MBUS_DATA_ACTIVE_HIGH;
+        cfg->type = V4L2_MBUS_PARALLEL;
+        cfg->flags = soc_camera_apply_board_flags(icl, cfg);
+
+        return 0;
+}
+
+static int tw9910_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);
+        u8 val = VSSL_VVALID | HSSL_DVALID;
+        unsigned long flags = soc_camera_apply_board_flags(icl, cfg);
+
+        /*
+         * set OUTCTR1
+         *
+         * We use VVALID and DVALID signals to control VSYNC and HSYNC
+         * outputs, in this mode their polarity is inverted.
+         */
+        if (flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
+                val |= HSP_HI;
+
+        if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
+                val |= VSP_HI;
+
+        return i2c_smbus_write_byte_data(client, OUTCTR1, val);
+}
+
 static struct v4l2_subdev_video_ops tw9910_subdev_video_ops = {
         .s_stream       = tw9910_s_stream,
         .g_mbus_fmt     = tw9910_g_fmt,
@@ -870,6 +913,8 @@ static struct v4l2_subdev_video_ops tw9910_subdev_video_ops = {
         .cropcap        = tw9910_cropcap,
         .g_crop         = tw9910_g_crop,
         .enum_mbus_fmt  = tw9910_enum_fmt,
+        .g_mbus_config  = tw9910_g_mbus_config,
+        .s_mbus_config  = tw9910_s_mbus_config,
 };
 
 static struct v4l2_subdev_ops tw9910_subdev_ops = {