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drm/fb: add setcmap and fix 8-bit support.

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This adds support for the setcmap api and fixes the 8bpp
support at least on radeon hardware. It adds a new load_lut
hook which can be called once the color map is setup.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie
2009-10-05 09:58:02 +10:00
parent dfee5614e4
commit 068143d388
8 changed files with 63 additions and 8 deletions
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55
drivers/gpu/drm/drm_fb_helper.c
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@ -454,6 +454,48 @@ out_free:
}
EXPORT_SYMBOL(drm_fb_helper_init_crtc_count);
int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info)
{
struct drm_fb_helper *fb_helper = info->par;
struct drm_device *dev = fb_helper->dev;
u16 *red, *green, *blue, *transp;
struct drm_crtc *crtc;
int i, rc = 0;
int start;
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
for (i = 0; i < fb_helper->crtc_count; i++) {
if (crtc->base.id == fb_helper->crtc_info[i].crtc_id)
break;
}
if (i == fb_helper->crtc_count)
continue;
red = cmap->red;
green = cmap->green;
blue = cmap->blue;
transp = cmap->transp;
start = cmap->start;
for (i = 0; i < cmap->len; i++) {
u16 hred, hgreen, hblue, htransp = 0xffff;
hred = *red++;
hgreen = *green++;
hblue = *blue++;
if (transp)
htransp = *transp++;
fb_helper->funcs->gamma_set(crtc, hred, hgreen, hblue, start++);
}
crtc_funcs->load_lut(crtc);
}
return rc;
}
EXPORT_SYMBOL(drm_fb_helper_setcmap);
int drm_fb_helper_setcolreg(unsigned regno,
unsigned red,
unsigned green,
@ -485,20 +527,21 @@ int drm_fb_helper_setcolreg(unsigned regno,
}
if (regno < 16) {
u32 *pal = fb->pseudo_palette;
switch (fb->depth) {
case 15:
fb->pseudo_palette[regno] = ((red & 0xf800) >> 1) |
pal[regno] = ((red & 0xf800) >> 1) |
((green & 0xf800) >> 6) |
((blue & 0xf800) >> 11);
break;
case 16:
fb->pseudo_palette[regno] = (red & 0xf800) |
pal[regno] = (red & 0xf800) |
((green & 0xfc00) >> 5) |
((blue & 0xf800) >> 11);
break;
case 24:
case 32:
fb->pseudo_palette[regno] =
pal[regno] =
(((red >> 8) & 0xff) << info->var.red.offset) |
(((green >> 8) & 0xff) << info->var.green.offset) |
(((blue >> 8) & 0xff) << info->var.blue.offset);
@ -851,10 +894,12 @@ void drm_fb_helper_free(struct drm_fb_helper *helper)
}
EXPORT_SYMBOL(drm_fb_helper_free);
void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch)
void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
uint32_t depth)
{
info->fix.type = FB_TYPE_PACKED_PIXELS;
info->fix.visual = FB_VISUAL_TRUECOLOR;
info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR :
FB_VISUAL_TRUECOLOR;
info->fix.type_aux = 0;
info->fix.xpanstep = 1; /* doing it in hw */
info->fix.ypanstep = 1; /* doing it in hw */