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drm/radeon/kms: Get LVDS native mode details from EDID if necessary.

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Fixes RMX problems on older Apple laptops which don't have an x86 BIOS ROM.

Signed-off-by: Michel Dänzer <daenzer@vmware.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>
This commit is contained in:
Michel Dänzer 2009-09-15 17:09:27 +02:00 committed by Dave Airlie
parent f657c2a731
commit 8dfaa8a777
2 changed files with 41 additions and 5 deletions
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12
drivers/gpu/drm/radeon/radeon_combios.c
View file

@ -863,8 +863,10 @@ struct radeon_encoder_lvds *radeon_combios_get_lvds_info(struct radeon_encoder
int tmp, i;
struct radeon_encoder_lvds *lvds = NULL;
if (rdev->bios == NULL)
return radeon_legacy_get_lvds_info_from_regs(rdev);
if (rdev->bios == NULL) {
lvds = radeon_legacy_get_lvds_info_from_regs(rdev);
goto out;
}
lcd_info = combios_get_table_offset(dev, COMBIOS_LCD_INFO_TABLE);
@ -965,11 +967,13 @@ struct radeon_encoder_lvds *radeon_combios_get_lvds_info(struct radeon_encoder
lvds->native_mode.flags = 0;
}
}
encoder->native_mode = lvds->native_mode;
} else {
DRM_INFO("No panel info found in BIOS\n");
return radeon_legacy_get_lvds_info_from_regs(rdev);
lvds = radeon_legacy_get_lvds_info_from_regs(rdev);
}
out:
if (lvds)
encoder->native_mode = lvds->native_mode;
return lvds;
}

34
drivers/gpu/drm/radeon/radeon_connectors.c
View file

@ -227,6 +227,36 @@ int radeon_connector_set_property(struct drm_connector *connector, struct drm_pr
return 0;
}
static void radeon_fixup_lvds_native_mode(struct drm_encoder *encoder,
struct drm_connector *connector)
{
struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
struct radeon_native_mode *native_mode = &radeon_encoder->native_mode;
/* Try to get native mode details from EDID if necessary */
if (!native_mode->dotclock) {
struct drm_display_mode *t, *mode;
list_for_each_entry_safe(mode, t, &connector->probed_modes, head) {
if (mode->hdisplay == native_mode->panel_xres &&
mode->vdisplay == native_mode->panel_yres) {
native_mode->hblank = mode->htotal - mode->hdisplay;
native_mode->hoverplus = mode->hsync_start - mode->hdisplay;
native_mode->hsync_width = mode->hsync_end - mode->hsync_start;
native_mode->vblank = mode->vtotal - mode->vdisplay;
native_mode->voverplus = mode->vsync_start - mode->vdisplay;
native_mode->vsync_width = mode->vsync_end - mode->vsync_start;
native_mode->dotclock = mode->clock;
DRM_INFO("Determined LVDS native mode details from EDID\n");
break;
}
}
}
if (!native_mode->dotclock) {
DRM_INFO("No LVDS native mode details, disabling RMX\n");
radeon_encoder->rmx_type = RMX_OFF;
}
}
static int radeon_lvds_get_modes(struct drm_connector *connector)
{
@ -239,9 +269,11 @@ static int radeon_lvds_get_modes(struct drm_connector *connector)
ret = radeon_ddc_get_modes(radeon_connector);
if (ret > 0) {
encoder = radeon_best_single_encoder(connector);
if (encoder)
if (encoder) {
radeon_fixup_lvds_native_mode(encoder, connector);
/* add scaled modes */
radeon_add_common_modes(encoder, connector);
}
return ret;
}
}