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V4L/DVB (5908): ivtv-fb: cleanups, prevent fw calls in some cases

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Signed-off-by: Ian Armstrong <ian@iarmst.co.uk>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Ian Armstrong 2007-07-21 16:43:36 -03:00 committed by Mauro Carvalho Chehab
parent 84149a0f70
commit aaf9fa21b6
1 changed files with 29 additions and 19 deletions
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48
drivers/media/video/ivtv/ivtv-fb.c
View file

@ -185,6 +185,9 @@ 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;
@ -350,6 +353,7 @@ static int ivtv_fb_prep_frame(struct ivtv *itv, int cmd, void __user *source,
unsigned long dest_offset, int count)
{
DEFINE_WAIT(wait);
struct osd_info *oi = itv->osd_info;
/* Nothing to do */
if (count == 0) {
@ -358,9 +362,9 @@ static int ivtv_fb_prep_frame(struct ivtv *itv, int cmd, void __user *source,
}
/* Check Total FB Size */
if ((dest_offset + count) > itv->osd_info->video_buffer_size) {
if ((dest_offset + count) > oi->video_buffer_size) {
IVTV_FB_WARN("ivtv_fb_prep_frame: Overflowing the framebuffer %ld, only %d available\n",
dest_offset + count, itv->osd_info->video_buffer_size);
dest_offset + count, oi->video_buffer_size);
return -E2BIG;
}
@ -387,7 +391,7 @@ static int ivtv_fb_prep_frame(struct ivtv *itv, int cmd, void __user *source,
}
/* OSD Address to send DMA to */
dest_offset += IVTV_DEC_MEM_START + itv->osd_info->video_rbase;
dest_offset += IVTV_DEC_MEM_START + oi->video_rbase;
/* Fill Buffers */
return ivtv_fb_prep_dec_dma_to_device(itv, dest_offset, source, count);
@ -445,8 +449,10 @@ static int ivtvfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long ar
static int ivtvfb_set_var(struct ivtv *itv, struct fb_var_screeninfo *var)
{
struct osd_info *oi = itv->osd_info;
struct ivtv_osd_coords ivtv_osd;
struct v4l2_rect ivtv_window;
int osd_mode = -1;
IVTV_FB_DEBUG_INFO("ivtvfb_set_var\n");
@ -456,32 +462,24 @@ static int ivtvfb_set_var(struct ivtv *itv, struct fb_var_screeninfo *var)
else /* RGB */
write_reg(read_reg(0x02a00) & ~0x0002000, 0x02a00);
/* Set the color mode
Although rare, occasionally things go wrong. The extra mode
change seems to help... */
/* Set the color mode */
switch (var->bits_per_pixel) {
case 8:
ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, 0);
ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, IVTV_OSD_BPP_8);
osd_mode = IVTV_OSD_BPP_8;
break;
case 32:
ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, 0);
ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, IVTV_OSD_BPP_32);
osd_mode = IVTV_OSD_BPP_32;
break;
case 16:
switch (var->green.length) {
case 4:
ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, 0);
ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, IVTV_OSD_BPP_16_444);
osd_mode = IVTV_OSD_BPP_16_444;
break;
case 5:
ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, 0);
ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, IVTV_OSD_BPP_16_555);
osd_mode = IVTV_OSD_BPP_16_555;
break;
case 6:
ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, 0);
ivtv_vapi(itv, CX2341X_OSD_SET_PIXEL_FORMAT, 1, IVTV_OSD_BPP_16_565);
osd_mode = IVTV_OSD_BPP_16_565;
break;
default:
IVTV_FB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
@ -491,8 +489,17 @@ static int ivtvfb_set_var(struct ivtv *itv, struct fb_var_screeninfo *var)
IVTV_FB_DEBUG_WARN("ivtvfb_set_var - Invalid bpp\n");
}
itv->osd_info->bits_per_pixel = var->bits_per_pixel;
itv->osd_info->bytes_per_pixel = var->bits_per_pixel / 8;
/* 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) {
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;
oi->bytes_per_pixel = var->bits_per_pixel / 8;
/* Set the flicker filter */
switch (var->vmode & FB_VMODE_MASK) {
@ -887,6 +894,9 @@ 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;