drm/fb: add more correct 8/16/24/32 bpp fb support.
The previous patches had some unwanted side effects, I've fixed
the lack of 32bpp working, and fixed up 16bpp so it should also work.
this also adds the interface to allow the driver to set a preferred
console depth so for example low memory rn50 can set it to 8bpp.
It also catches 24bpp on cards that can't do it and forces 32bpp.
Tested on r100/r600/i945.
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 3746bd2..23dc9c1 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -454,6 +454,54 @@
}
EXPORT_SYMBOL(drm_fb_helper_init_crtc_count);
+static void setcolreg(struct drm_crtc *crtc, u16 red, u16 green,
+ u16 blue, u16 regno, struct fb_info *info)
+{
+ struct drm_fb_helper *fb_helper = info->par;
+ struct drm_framebuffer *fb = fb_helper->fb;
+ int pindex;
+
+ pindex = regno;
+
+ if (fb->bits_per_pixel == 16) {
+ pindex = regno << 3;
+
+ if (fb->depth == 16 && regno > 63)
+ return;
+ if (fb->depth == 15 && regno > 31)
+ return;
+
+ if (fb->depth == 16) {
+ u16 r, g, b;
+ int i;
+ if (regno < 32) {
+ for (i = 0; i < 8; i++)
+ fb_helper->funcs->gamma_set(crtc, red,
+ green, blue, pindex + i);
+ }
+
+ fb_helper->funcs->gamma_get(crtc, &r,
+ &g, &b,
+ pindex >> 1);
+
+ for (i = 0; i < 4; i++)
+ fb_helper->funcs->gamma_set(crtc, r,
+ green, b,
+ (pindex >> 1) + i);
+ }
+ }
+
+ if (fb->depth != 16)
+ fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex);
+
+ if (regno < 16 && info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
+ ((u32 *) fb->pseudo_palette)[regno] =
+ (regno << info->var.red.offset) |
+ (regno << info->var.green.offset) |
+ (regno << info->var.blue.offset);
+ }
+}
+
int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info)
{
struct drm_fb_helper *fb_helper = info->par;
@@ -488,7 +536,7 @@
if (transp)
htransp = *transp++;
- fb_helper->funcs->gamma_set(crtc, hred, hgreen, hblue, start++);
+ setcolreg(crtc, hred, hgreen, hblue, start++, info);
}
crtc_funcs->load_lut(crtc);
}
@@ -508,9 +556,11 @@
struct drm_crtc *crtc;
int i;
- list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
- struct drm_framebuffer *fb = fb_helper->fb;
+ if (regno > 255)
+ return 1;
+ 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;
@@ -518,36 +568,9 @@
if (i == fb_helper->crtc_count)
continue;
- if (regno > 255)
- return 1;
- if (fb->depth == 8) {
- fb_helper->funcs->gamma_set(crtc, red, green, blue, regno);
- return 0;
- }
-
- if (regno < 16) {
- u32 *pal = fb->pseudo_palette;
- switch (fb->depth) {
- case 15:
- pal[regno] = ((red & 0xf800) >> 1) |
- ((green & 0xf800) >> 6) |
- ((blue & 0xf800) >> 11);
- break;
- case 16:
- pal[regno] = (red & 0xf800) |
- ((green & 0xfc00) >> 5) |
- ((blue & 0xf800) >> 11);
- break;
- case 24:
- case 32:
- pal[regno] =
- (((red >> 8) & 0xff) << info->var.red.offset) |
- (((green >> 8) & 0xff) << info->var.green.offset) |
- (((blue >> 8) & 0xff) << info->var.blue.offset);
- break;
- }
- }
+ setcolreg(crtc, red, green, blue, regno, info);
+ crtc_funcs->load_lut(crtc);
}
return 0;
}
@@ -717,6 +740,7 @@
EXPORT_SYMBOL(drm_fb_helper_pan_display);
int drm_fb_helper_single_fb_probe(struct drm_device *dev,
+ int preferred_bpp,
int (*fb_create)(struct drm_device *dev,
uint32_t fb_width,
uint32_t fb_height,
@@ -739,6 +763,11 @@
struct drm_fb_helper *fb_helper;
uint32_t surface_depth = 24, surface_bpp = 32;
+ /* if driver picks 8 or 16 by default use that
+ for both depth/bpp */
+ if (preferred_bpp != surface_bpp) {
+ surface_depth = surface_bpp = preferred_bpp;
+ }
/* first up get a count of crtcs now in use and new min/maxes width/heights */
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private;
@@ -899,7 +928,7 @@
{
info->fix.type = FB_TYPE_PACKED_PIXELS;
info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR :
- FB_VISUAL_TRUECOLOR;
+ FB_VISUAL_DIRECTCOLOR;
info->fix.type_aux = 0;
info->fix.xpanstep = 1; /* doing it in hw */
info->fix.ypanstep = 1; /* doing it in hw */
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index a840cb1..8939039 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2922,6 +2922,16 @@
intel_crtc->lut_b[regno] = blue >> 8;
}
+void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
+ u16 *blue, int regno)
+{
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+
+ *red = intel_crtc->lut_r[regno] << 8;
+ *green = intel_crtc->lut_g[regno] << 8;
+ *blue = intel_crtc->lut_b[regno] << 8;
+}
+
static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
u16 *blue, uint32_t size)
{
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index b9e47f1..aa96b52 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -173,6 +173,8 @@
extern void intelfb_restore(void);
extern void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
u16 blue, int regno);
+extern void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
+ u16 *blue, int regno);
extern int intel_framebuffer_create(struct drm_device *dev,
struct drm_mode_fb_cmd *mode_cmd,
diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c
index 3ee8db1..2b0fe54 100644
--- a/drivers/gpu/drm/i915/intel_fb.c
+++ b/drivers/gpu/drm/i915/intel_fb.c
@@ -65,6 +65,7 @@
static struct drm_fb_helper_funcs intel_fb_helper_funcs = {
.gamma_set = intel_crtc_fb_gamma_set,
+ .gamma_get = intel_crtc_fb_gamma_get,
};
@@ -124,6 +125,10 @@
struct device *device = &dev->pdev->dev;
int size, ret, mmio_bar = IS_I9XX(dev) ? 0 : 1;
+ /* we don't do packed 24bpp */
+ if (surface_bpp == 24)
+ surface_bpp = 32;
+
mode_cmd.width = surface_width;
mode_cmd.height = surface_height;
@@ -245,7 +250,7 @@
int ret;
DRM_DEBUG("\n");
- ret = drm_fb_helper_single_fb_probe(dev, intelfb_create);
+ ret = drm_fb_helper_single_fb_probe(dev, 32, intelfb_create);
return ret;
}
EXPORT_SYMBOL(intelfb_probe);
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 44cfcfd..3655d91 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -106,24 +106,33 @@
legacy_crtc_load_lut(crtc);
}
-/** Sets the color ramps on behalf of RandR */
+/** Sets the color ramps on behalf of fbcon */
void radeon_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
u16 blue, int regno)
{
struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
- if (regno == 0)
- DRM_DEBUG("gamma set %d\n", radeon_crtc->crtc_id);
radeon_crtc->lut_r[regno] = red >> 6;
radeon_crtc->lut_g[regno] = green >> 6;
radeon_crtc->lut_b[regno] = blue >> 6;
}
+/** Gets the color ramps on behalf of fbcon */
+void radeon_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
+ u16 *blue, int regno)
+{
+ struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
+
+ *red = radeon_crtc->lut_r[regno] << 6;
+ *green = radeon_crtc->lut_g[regno] << 6;
+ *blue = radeon_crtc->lut_b[regno] << 6;
+}
+
static void radeon_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
u16 *blue, uint32_t size)
{
struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
- int i, j;
+ int i;
if (size != 256) {
return;
@@ -132,23 +141,11 @@
return;
}
- if (crtc->fb->depth == 16) {
- for (i = 0; i < 64; i++) {
- if (i <= 31) {
- for (j = 0; j < 8; j++) {
- radeon_crtc->lut_r[i * 8 + j] = red[i] >> 6;
- radeon_crtc->lut_b[i * 8 + j] = blue[i] >> 6;
- }
- }
- for (j = 0; j < 4; j++)
- radeon_crtc->lut_g[i * 4 + j] = green[i] >> 6;
- }
- } else {
- for (i = 0; i < 256; i++) {
- radeon_crtc->lut_r[i] = red[i] >> 6;
- radeon_crtc->lut_g[i] = green[i] >> 6;
- radeon_crtc->lut_b[i] = blue[i] >> 6;
- }
+ /* userspace palettes are always correct as is */
+ for (i = 0; i < 256; i++) {
+ radeon_crtc->lut_r[i] = red[i] >> 6;
+ radeon_crtc->lut_g[i] = green[i] >> 6;
+ radeon_crtc->lut_b[i] = blue[i] >> 6;
}
radeon_crtc_load_lut(crtc);
diff --git a/drivers/gpu/drm/radeon/radeon_fb.c b/drivers/gpu/drm/radeon/radeon_fb.c
index c32f440..b38c4c8 100644
--- a/drivers/gpu/drm/radeon/radeon_fb.c
+++ b/drivers/gpu/drm/radeon/radeon_fb.c
@@ -124,6 +124,7 @@
static struct drm_fb_helper_funcs radeon_fb_helper_funcs = {
.gamma_set = radeon_crtc_fb_gamma_set,
+ .gamma_get = radeon_crtc_fb_gamma_get,
};
int radeonfb_create(struct drm_device *dev,
@@ -151,6 +152,11 @@
mode_cmd.width = surface_width;
mode_cmd.height = surface_height;
+
+ /* avivo can't scanout real 24bpp */
+ if ((surface_bpp == 24) && ASIC_IS_AVIVO(rdev))
+ surface_bpp = 32;
+
mode_cmd.bpp = surface_bpp;
/* need to align pitch with crtc limits */
mode_cmd.pitch = radeon_align_pitch(rdev, mode_cmd.width, mode_cmd.bpp, fb_tiled) * ((mode_cmd.bpp + 1) / 8);
@@ -315,7 +321,7 @@
int radeonfb_probe(struct drm_device *dev)
{
- return drm_fb_helper_single_fb_probe(dev, &radeonfb_create);
+ return drm_fb_helper_single_fb_probe(dev, 32, &radeonfb_create);
}
int radeonfb_remove(struct drm_device *dev, struct drm_framebuffer *fb)
diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
index 570a587..e612268 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -407,6 +407,8 @@
radeon_combios_encoder_dpms_scratch_regs(struct drm_encoder *encoder, bool on);
extern void radeon_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
u16 blue, int regno);
+extern void radeon_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
+ u16 *blue, int regno);
struct drm_framebuffer *radeon_framebuffer_create(struct drm_device *dev,
struct drm_mode_fb_cmd *mode_cmd,
struct drm_gem_object *obj);
diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
index f1ed085..58c892a 100644
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -39,6 +39,8 @@
struct drm_fb_helper_funcs {
void (*gamma_set)(struct drm_crtc *crtc, u16 red, u16 green,
u16 blue, int regno);
+ void (*gamma_get)(struct drm_crtc *crtc, u16 *red, u16 *green,
+ u16 *blue, int regno);
};
/* mode specified on the command line */
@@ -71,6 +73,7 @@
};
int drm_fb_helper_single_fb_probe(struct drm_device *dev,
+ int preferred_bpp,
int (*fb_create)(struct drm_device *dev,
uint32_t fb_width,
uint32_t fb_height,