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drm/fb-helper: factor out pseudo-palette

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The pseudo-palette has nothing to do with the crtc, so move it
out of the crtc loop and update the palette once, then break out
early.

Signed-off-by: Peter Rosin <peda@axenita.se>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1499164632-5582-2-git-send-email-peda@axentia.se
This commit is contained in:
Peter Rosin 2017-07-04 12:36:57 +02:00 committed by Daniel Vetter
parent 6b7dc6e9f8
commit b8e2b0199c
1 changed files with 37 additions and 23 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

60
drivers/gpu/drm/drm_fb_helper.c
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@ -1218,29 +1218,6 @@ static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green,
struct drm_fb_helper *fb_helper = info->par;
struct drm_framebuffer *fb = fb_helper->fb;
if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
u32 *palette;
u32 value;
/* place color in psuedopalette */
if (regno > 16)
return -EINVAL;
palette = (u32 *)info->pseudo_palette;
red >>= (16 - info->var.red.length);
green >>= (16 - info->var.green.length);
blue >>= (16 - info->var.blue.length);
value = (red << info->var.red.offset) |
(green << info->var.green.offset) |
(blue << info->var.blue.offset);
if (info->var.transp.length > 0) {
u32 mask = (1 << info->var.transp.length) - 1;
mask <<= info->var.transp.offset;
value |= mask;
}
palette[regno] = value;
return 0;
}
/*
* The driver really shouldn't advertise pseudo/directcolor
* visuals if it can't deal with the palette.
@ -1256,6 +1233,38 @@ static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green,
return 0;
}
static int setcmap_pseudo_palette(struct fb_cmap *cmap, struct fb_info *info)
{
u32 *palette = (u32 *)info->pseudo_palette;
int i;
if (cmap->start + cmap->len > 16)
return -EINVAL;
for (i = 0; i < cmap->len; ++i) {
u16 red = cmap->red[i];
u16 green = cmap->green[i];
u16 blue = cmap->blue[i];
u32 value;
red >>= 16 - info->var.red.length;
green >>= 16 - info->var.green.length;
blue >>= 16 - info->var.blue.length;
value = (red << info->var.red.offset) |
(green << info->var.green.offset) |
(blue << info->var.blue.offset);
if (info->var.transp.length > 0) {
u32 mask = (1 << info->var.transp.length) - 1;
mask <<= info->var.transp.offset;
value |= mask;
}
palette[cmap->start + i] = value;
}
return 0;
}
/**
* drm_fb_helper_setcmap - implementation for &fb_ops.fb_setcmap
* @cmap: cmap to set
@ -1281,6 +1290,11 @@ int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info)
}
drm_modeset_lock_all(dev);
if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
rc = setcmap_pseudo_palette(cmap, info);
goto out;
}
for (i = 0; i < fb_helper->crtc_count; i++) {
crtc = fb_helper->crtc_info[i].mode_set.crtc;
crtc_funcs = crtc->helper_private;