提交 068143d3 编写于 作者: D Dave Airlie

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

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: NDave Airlie <airlied@redhat.com>
上级 dfee5614
......@@ -454,6 +454,48 @@ int drm_fb_helper_init_crtc_count(struct drm_fb_helper *helper, int crtc_count,
}
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 */
......
......@@ -3513,6 +3513,7 @@ static const struct drm_crtc_helper_funcs intel_helper_funcs = {
.mode_set_base = intel_pipe_set_base,
.prepare = intel_crtc_prepare,
.commit = intel_crtc_commit,
.load_lut = intel_crtc_load_lut,
};
static const struct drm_crtc_funcs intel_crtc_funcs = {
......
......@@ -60,6 +60,7 @@ static struct fb_ops intelfb_ops = {
.fb_imageblit = cfb_imageblit,
.fb_pan_display = drm_fb_helper_pan_display,
.fb_blank = drm_fb_helper_blank,
.fb_setcmap = drm_fb_helper_setcmap,
};
static struct drm_fb_helper_funcs intel_fb_helper_funcs = {
......@@ -206,7 +207,7 @@ static int intelfb_create(struct drm_device *dev, uint32_t fb_width,
// memset(info->screen_base, 0, size);
drm_fb_helper_fill_fix(info, fb->pitch);
drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
drm_fb_helper_fill_var(info, fb, fb_width, fb_height);
/* FIXME: we really shouldn't expose mmio space at all */
......
......@@ -733,6 +733,7 @@ static const struct drm_crtc_helper_funcs atombios_helper_funcs = {
.mode_set_base = atombios_crtc_set_base,
.prepare = atombios_crtc_prepare,
.commit = atombios_crtc_commit,
.load_lut = radeon_crtc_load_lut,
};
void radeon_atombios_init_crtc(struct drm_device *dev,
......
......@@ -55,6 +55,7 @@ static struct fb_ops radeonfb_ops = {
.fb_imageblit = cfb_imageblit,
.fb_pan_display = drm_fb_helper_pan_display,
.fb_blank = drm_fb_helper_blank,
.fb_setcmap = drm_fb_helper_setcmap,
};
/**
......@@ -239,7 +240,7 @@ int radeonfb_create(struct drm_device *dev,
strcpy(info->fix.id, "radeondrmfb");
drm_fb_helper_fill_fix(info, fb->pitch);
drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
info->flags = FBINFO_DEFAULT;
info->fbops = &radeonfb_ops;
......
......@@ -1053,6 +1053,7 @@ static const struct drm_crtc_helper_funcs legacy_helper_funcs = {
.mode_set_base = radeon_crtc_set_base,
.prepare = radeon_crtc_prepare,
.commit = radeon_crtc_commit,
.load_lut = radeon_crtc_load_lut,
};
......
......@@ -61,6 +61,9 @@ struct drm_crtc_helper_funcs {
/* Move the crtc on the current fb to the given position *optional* */
int (*mode_set_base)(struct drm_crtc *crtc, int x, int y,
struct drm_framebuffer *old_fb);
/* reload the current crtc LUT */
void (*load_lut)(struct drm_crtc *crtc);
};
struct drm_encoder_helper_funcs {
......
......@@ -98,9 +98,11 @@ int drm_fb_helper_setcolreg(unsigned regno,
void drm_fb_helper_restore(void);
void drm_fb_helper_fill_var(struct fb_info *info, struct drm_framebuffer *fb,
uint32_t fb_width, uint32_t fb_height);
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);
int drm_fb_helper_add_connector(struct drm_connector *connector);
int drm_fb_helper_parse_command_line(struct drm_device *dev);
int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);
#endif
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