diff options
| author | Ian Armstrong <ian@iarmst.demon.co.uk> | 2007-10-12 15:15:41 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2007-10-22 18:01:45 +0400 |
| commit | 6659e3ed559db2e730947268f9d57869b7a9016c (patch) | |
| tree | 8fe61b0d3639a15f0cece170a124379440460aed /drivers/media | |
| parent | 4339ab93657cce9ca0e4678053ddcb68149d48fd (diff) | |
| download | linux-6659e3ed559db2e730947268f9d57869b7a9016c.tar.xz | |
V4L/DVB (6340): ivtvfb: screen mode change sometimes goes wrong
This patch partially reverts a previous change that caused the
CX2341X_OSD_SET_PIXEL_FORMAT firmware calls to be skipped when the pixel
format of the framebuffer wasn't altered by FBIOPUT_VSCREENINFO.
Unfortunately, another firmware call on the PVR350 sometimes scrambles the
display when trying to adjust the framebuffer settings. This patch re-enables
the CX2341X_OSD_SET_PIXEL_FORMAT calls to try and prevent this from
occurring.
Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/video/ivtv/ivtvfb.c | 14 |
1 files changed, 3 insertions, 11 deletions
diff --git a/drivers/media/video/ivtv/ivtvfb.c b/drivers/media/video/ivtv/ivtvfb.c index 9684048fe56c..0abca6bec7d4 100644 --- a/drivers/media/video/ivtv/ivtvfb.c +++ b/drivers/media/video/ivtv/ivtvfb.c @@ -166,9 +166,6 @@ struct osd_info { unsigned long fb_end_aligned_physaddr; #endif - /* Current osd mode */ - int osd_mode; - /* Store the buffer offset */ int set_osd_coords_x; int set_osd_coords_y; @@ -470,13 +467,11 @@ static int ivtvfb_set_var(struct ivtv *itv, struct fb_var_screeninfo *var) IVTVFB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n"); } - /* Change osd mode if needed. - Although rare, things can go wrong. The extra mode - change seems to help... */ - if (osd_mode != -1 && osd_mode != oi->osd_mode) { + /* Set video mode. Although rare, the display can become scrambled even + if we don't change mode. Always 'bounce' to osd_mode via mode 0 */ + if (osd_mode != -1) { ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, 0); ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, osd_mode); - oi->osd_mode = osd_mode; } oi->bits_per_pixel = var->bits_per_pixel; @@ -882,9 +877,6 @@ static int ivtvfb_init_vidmode(struct ivtv *itv) oi->bits_per_pixel = osd_depth; oi->bytes_per_pixel = oi->bits_per_pixel / 8; - /* Invalidate current osd mode to force a mode switch later */ - oi->osd_mode = -1; - /* Horizontal size & position */ if (osd_xres > 720) osd_xres = 720; |