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drm/edid: Allow drm_mode_find_dmt to hunt for reduced-blanking modes 

It won't find any, yet.  Fix up callers to match: standard mode codes
will look prefer r-b modes for a given size if present, EST3 mode codes
will look for exactly the r-b-ness mentioned in the mode code.  This
might mean fewer modes matched for EST3 mode codes between now and when
the DMT mode list regrows the r-b modes, but practically speaking EST3
codes don't exist in the wild.

Signed-off-by: Adam Jackson <ajax@redhat.com>
Tested-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
hifive-unleashed-5.1
Adam Jackson 2012-04-13 16:33:31 -04:00 committed by Dave Airlie
parent f8b46a05e6
commit f6e252bac4
3 changed files with 27 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
drivers/gpu/drm/drm_edid.c
View File

@ -486,18 +486,29 @@ static void edid_fixup_preferred(struct drm_connector *connector,
preferred_mode->type |= DRM_MODE_TYPE_PREFERRED;
}
static bool
mode_is_rb(const struct drm_display_mode *mode)
{
return (mode->htotal - mode->hdisplay == 160) &&
(mode->hsync_end - mode->hdisplay == 80) &&
(mode->hsync_end - mode->hsync_start == 32) &&
(mode->vsync_start - mode->vdisplay == 3);
}
/*
* drm_mode_find_dmt - Create a copy of a mode if present in DMT
* @dev: Device to duplicate against
* @hsize: Mode width
* @vsize: Mode height
* @fresh: Mode refresh rate
* @rb: Mode reduced-blanking-ness
*
* Walk the DMT mode list looking for a match for the given parameters.
* Return a newly allocated copy of the mode, or NULL if not found.
*/
struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
int hsize, int vsize, int fresh)
int hsize, int vsize, int fresh,
bool rb)
{
int i;
@ -509,6 +520,8 @@ struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
continue;
if (fresh != drm_mode_vrefresh(ptr))
continue;
if (rb != mode_is_rb(ptr))
continue;
return drm_mode_duplicate(dev, ptr);
}
@ -742,10 +755,17 @@ drm_mode_std(struct drm_connector *connector, struct edid *edid,
}
/* check whether it can be found in default mode table */
mode = drm_mode_find_dmt(dev, hsize, vsize, vrefresh_rate);
if (drm_monitor_supports_rb(edid)) {
mode = drm_mode_find_dmt(dev, hsize, vsize, vrefresh_rate,
true);
if (mode)
return mode;
}
mode = drm_mode_find_dmt(dev, hsize, vsize, vrefresh_rate, false);
if (mode)
return mode;
/* okay, generate it */
switch (timing_level) {
case LEVEL_DMT:
break;
@ -919,15 +939,6 @@ static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev,
return mode;
}
static bool
mode_is_rb(const struct drm_display_mode *mode)
{
return (mode->htotal - mode->hdisplay == 160) &&
(mode->hsync_end - mode->hdisplay == 80) &&
(mode->hsync_end - mode->hsync_start == 32) &&
(mode->vsync_start - mode->vdisplay == 3);
}
static bool
mode_in_hsync_range(const struct drm_display_mode *mode,
struct edid *edid, u8 *t)
@ -1073,8 +1084,8 @@ drm_est3_modes(struct drm_connector *connector, struct detailed_timing *timing)
mode = drm_mode_find_dmt(connector->dev,
est3_modes[m].w,
est3_modes[m].h,
est3_modes[m].r
/*, est3_modes[m].rb */);
est3_modes[m].r,
est3_modes[m].rb);
if (mode) {
drm_mode_probed_add(connector, mode);
modes++;

2
drivers/gpu/drm/drm_fb_helper.c
View File

@ -1083,7 +1083,7 @@ static bool drm_target_cloned(struct drm_fb_helper *fb_helper,
/* try and find a 1024x768 mode on each connector */
can_clone = true;
dmt_mode = drm_mode_find_dmt(fb_helper->dev, 1024, 768, 60);
dmt_mode = drm_mode_find_dmt(fb_helper->dev, 1024, 768, 60, false);
for (i = 0; i < fb_helper->connector_count; i++) {

3
include/drm/drm_crtc.h
View File

@ -1015,7 +1015,8 @@ extern int drm_edid_header_is_valid(const u8 *raw_edid);
extern bool drm_edid_block_valid(u8 *raw_edid);
extern bool drm_edid_is_valid(struct edid *edid);
struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
int hsize, int vsize, int fresh);
int hsize, int vsize, int fresh,
bool rb);
extern int drm_mode_create_dumb_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);