V4L/DVB (12139): em28xx: add other video formats

Add suppport for the teste RGB565 format (16 bits/pixel).
Currently, webcam support works only at RGB565, at 640x480.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 18 insertions, 1 deletions

diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c
index 8fe1beecfffa..b96a138d9d03 100644
--- a/drivers/media/video/em28xx/em28xx-video.c
+++ b/drivers/media/video/em28xx/em28xx-video.c
@@ -94,6 +94,11 @@ static struct em28xx_fmt format[] = {
                 .fourcc   = V4L2_PIX_FMT_YUYV,
                 .depth    = 16,
                 .reg      = EM28XX_OUTFMT_YUV422_Y0UY1V,
+        }, {
+                .name     = "16 bpp RGB, le",
+                .fourcc   = V4L2_PIX_FMT_RGB565,
+                .depth    = 16,
+                .reg      = EM28XX_OUTFMT_YUV211,
         },
 };
 
@@ -694,6 +699,10 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
         unsigned int          hscale, vscale;
         struct em28xx_fmt     *fmt;
 
+        /* FIXME: This is the only supported fmt */
+        if (dev->board.is_27xx)
+                f->fmt.pix.pixelformat = V4L2_PIX_FMT_RGB565;
+
         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
         if (!fmt) {
                 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
@@ -701,7 +710,11 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
                 return -EINVAL;
         }
 
-        if (dev->board.is_em2800) {
+        if (dev->board.is_27xx) {
+                /* FIXME: This is the only supported fmt */
+                width  = 640;
+                height = 480;
+        } else if (dev->board.is_em2800) {
                 /* the em2800 can only scale down to 50% */
                 height = height > (3 * maxh / 4) ? maxh : maxh / 2;
                 width = width > (3 * maxw / 4) ? maxw : maxw / 2;
@@ -747,6 +760,10 @@ static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 
         mutex_lock(&dev->lock);
 
+        /* FIXME: This is the only supported fmt */
+        if (dev->board.is_27xx)
+                f->fmt.pix.pixelformat = V4L2_PIX_FMT_RGB565;
+
         vidioc_try_fmt_vid_cap(file, priv, f);
 
         fmt = format_by_fourcc(f->fmt.pix.pixelformat);