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drm: handle depth & bpp changes correctly 

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
This commit is contained in:
Jesse Barnes 2009-01-09 13:56:14 -08:00 committed by Dave Airlie
parent 40a518d9f1
commit 712531bfe9
2 changed files with 35 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
drivers/gpu/drm/drm_crtc_helper.c
View File

@ -480,6 +480,7 @@ bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
int saved_x, saved_y;
struct drm_encoder *encoder;
bool ret = true;
bool depth_changed, bpp_changed;
adjusted_mode = drm_mode_duplicate(dev, mode);
@ -488,6 +489,15 @@ bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
if (!crtc->enabled)
return true;
if (old_fb && crtc->fb) {
depth_changed = (old_fb->depth != crtc->fb->depth);
bpp_changed = (old_fb->bits_per_pixel !=
crtc->fb->bits_per_pixel);
} else {
depth_changed = true;
bpp_changed = true;
}
saved_mode = crtc->mode;
saved_x = crtc->x;
saved_y = crtc->y;
@ -500,7 +510,8 @@ bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
crtc->y = y;
if (drm_mode_equal(&saved_mode, &crtc->mode)) {
if (saved_x != crtc->x || saved_y != crtc->y) {
if (saved_x != crtc->x || saved_y != crtc->y ||
depth_changed || bpp_changed) {
crtc_funcs->mode_set_base(crtc, crtc->x, crtc->y,
old_fb);
goto done;
@ -606,8 +617,8 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set)
struct drm_encoder **save_encoders, *new_encoder;
struct drm_framebuffer *old_fb;
bool save_enabled;
bool changed = false;
bool flip_or_move = false;
bool mode_changed = false;
bool fb_changed = false;
struct drm_connector *connector;
int count = 0, ro, fail = 0;
struct drm_crtc_helper_funcs *crtc_funcs;
@ -635,7 +646,10 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set)
/* save previous config */
save_enabled = set->crtc->enabled;
/* this is meant to be num_connector not num_crtc */
/*
* We do mode_config.num_connectors here since we'll look at the
* CRTC and encoder associated with each connector later.
*/
save_crtcs = kzalloc(dev->mode_config.num_connector *
sizeof(struct drm_crtc *), GFP_KERNEL);
if (!save_crtcs)
@ -651,21 +665,25 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set)
/* We should be able to check here if the fb has the same properties
* and then just flip_or_move it */
if (set->crtc->fb != set->fb) {
/* if we have no fb then its a change not a flip */
/* If we have no fb then treat it as a full mode set */
if (set->crtc->fb == NULL)
changed = true;
mode_changed = true;
else if ((set->fb->bits_per_pixel !=
set->crtc->fb->bits_per_pixel) ||
set->fb->depth != set->crtc->fb->depth)
fb_changed = true;
else
flip_or_move = true;
fb_changed = true;
}
if (set->x != set->crtc->x || set->y != set->crtc->y)
flip_or_move = true;
fb_changed = true;
if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) {
DRM_DEBUG("modes are different\n");
drm_mode_debug_printmodeline(&set->crtc->mode);
drm_mode_debug_printmodeline(set->mode);
changed = true;
mode_changed = true;
}
/* a) traverse passed in connector list and get encoders for them */
@ -688,7 +706,7 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set)
}
if (new_encoder != connector->encoder) {
changed = true;
mode_changed = true;
connector->encoder = new_encoder;
}
}
@ -715,16 +733,16 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set)
new_crtc = set->crtc;
}
if (new_crtc != connector->encoder->crtc) {
changed = true;
mode_changed = true;
connector->encoder->crtc = new_crtc;
}
}
/* mode_set_base is not a required function */
if (flip_or_move && !crtc_funcs->mode_set_base)
changed = true;
if (fb_changed && !crtc_funcs->mode_set_base)
mode_changed = true;
if (changed) {
if (mode_changed) {
old_fb = set->crtc->fb;
set->crtc->fb = set->fb;
set->crtc->enabled = (set->mode != NULL);
@ -743,7 +761,7 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set)
set->crtc->desired_mode = set->mode;
}
drm_helper_disable_unused_functions(dev);
} else if (flip_or_move) {
} else if (fb_changed) {
old_fb = set->crtc->fb;
if (set->crtc->fb != set->fb)
set->crtc->fb = set->fb;

2
drivers/gpu/drm/i915/intel_display.c
View File

@ -401,6 +401,8 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
I915_WRITE(dspstride, crtc->fb->pitch);
dspcntr = I915_READ(dspcntr_reg);
/* Mask out pixel format bits in case we change it */
dspcntr &= ~DISPPLANE_PIXFORMAT_MASK;
switch (crtc->fb->bits_per_pixel) {
case 8:
dspcntr |= DISPPLANE_8BPP;