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ps3fb: add support for configurable black borders 

Allow all video modes where the visible resolution plus the black borders
matches a native resolution

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Geert Uytterhoeven 2008-02-06 01:39:33 -08:00 committed by Linus Torvalds
parent 7974f72a21
commit 633bd111ba
1 changed files with 49 additions and 20 deletions
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69
drivers/video/ps3fb.c
View File

@ -270,32 +270,57 @@ module_param(ps3fb_mode, int, 0);
static char *mode_option __devinitdata;
static unsigned int ps3fb_find_mode(const struct fb_var_screeninfo *var,
static int ps3fb_cmp_mode(const struct fb_videomode *vmode,
const struct fb_var_screeninfo *var)
{
/* resolution + black border must match a native resolution */
if (vmode->left_margin + vmode->xres + vmode->right_margin !=
var->left_margin + var->xres + var->right_margin ||
vmode->upper_margin + vmode->yres + vmode->lower_margin !=
var->upper_margin + var->yres + var->lower_margin)
return -1;
/* minimum limits for margins */
if (vmode->left_margin > var->left_margin ||
vmode->right_margin > var->right_margin ||
vmode->upper_margin > var->upper_margin ||
vmode->lower_margin > var->lower_margin)
return -1;
/* these fields must match exactly */
if (vmode->pixclock != var->pixclock ||
vmode->hsync_len != var->hsync_len ||
vmode->vsync_len != var->vsync_len ||
vmode->sync != var->sync ||
vmode->vmode != (var->vmode & FB_VMODE_MASK))
return -1;
return 0;
}
static unsigned int ps3fb_find_mode(struct fb_var_screeninfo *var,
u32 *ddr_line_length, u32 *xdr_line_length)
{
unsigned int i, fi, mode;
unsigned int i, mode;
for (i = 0; i < ARRAY_SIZE(ps3fb_modedb); i++)
if (var->xres == ps3fb_modedb[i].xres &&
var->yres == ps3fb_modedb[i].yres &&
var->pixclock == ps3fb_modedb[i].pixclock &&
var->hsync_len == ps3fb_modedb[i].hsync_len &&
var->vsync_len == ps3fb_modedb[i].vsync_len &&
var->left_margin == ps3fb_modedb[i].left_margin &&
var->right_margin == ps3fb_modedb[i].right_margin &&
var->upper_margin == ps3fb_modedb[i].upper_margin &&
var->lower_margin == ps3fb_modedb[i].lower_margin &&
var->sync == ps3fb_modedb[i].sync &&
(var->vmode & FB_VMODE_MASK) == ps3fb_modedb[i].vmode)
for (i = PS3AV_MODE_1080P50; i < ARRAY_SIZE(ps3fb_modedb); i++)
if (!ps3fb_cmp_mode(&ps3fb_modedb[i], var))
goto found;
pr_debug("ps3fb_find_mode: mode not found\n");
return 0;
found:
/* Cropped broadcast modes use the full line length */
fi = i < PS3AV_MODE_1080P50 ? i + PS3AV_MODE_WUXGA : i;
*ddr_line_length = ps3fb_modedb[fi].xres * BPP;
*ddr_line_length = ps3fb_modedb[i].xres * BPP;
if (!var->xres) {
var->xres = 1;
var->right_margin--;
}
if (!var->yres) {
var->yres = 1;
var->lower_margin--;
}
if (ps3_compare_firmware_version(1, 9, 0) >= 0) {
*xdr_line_length = GPU_ALIGN_UP(max(var->xres,
@ -305,10 +330,14 @@ found:
} else
*xdr_line_length = *ddr_line_length;
/* Full broadcast modes have the full mode bit set */
mode = i+1;
if (mode > PS3AV_MODE_WUXGA)
mode = (mode - PS3AV_MODE_WUXGA) | PS3AV_MODE_FULL;
if (mode > PS3AV_MODE_WUXGA) {
mode -= PS3AV_MODE_WUXGA;
/* Full broadcast modes have the full mode bit set */
if (ps3fb_modedb[i].xres == var->xres &&
ps3fb_modedb[i].yres == var->yres)
mode |= PS3AV_MODE_FULL;
}
pr_debug("ps3fb_find_mode: mode %u\n", mode);