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drm/i915: make DBLCLK modes work 

They require an AVI InfoFrame with a proper Pixel Repetition field.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=45729
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Paulo Zanoni 2012-04-13 16:31:41 -03:00 committed by Daniel Vetter
parent 0aa534df05
commit c846b6194d
2 changed files with 8 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/i915/intel_drv.h
View File

@ -234,6 +234,8 @@ struct cxsr_latency {
#define DIP_TYPE_AVI 0x82
#define DIP_VERSION_AVI 0x2
#define DIP_LEN_AVI 13
#define DIP_AVI_PR_1 0
#define DIP_AVI_PR_2 1
#define DIP_TYPE_SPD 0x83
#define DIP_VERSION_SPD 0x1

8
drivers/gpu/drm/i915/intel_hdmi.c
View File

@ -220,7 +220,8 @@ static void intel_set_infoframe(struct drm_encoder *encoder,
intel_hdmi->write_infoframe(encoder, frame);
}
static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder)
static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder,
struct drm_display_mode *adjusted_mode)
{
struct dip_infoframe avi_if = {
.type = DIP_TYPE_AVI,
@ -228,6 +229,9 @@ static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder)
.len = DIP_LEN_AVI,
};
if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK)
avi_if.body.avi.YQ_CN_PR |= DIP_AVI_PR_2;
intel_set_infoframe(encoder, &avi_if);
}
@ -290,7 +294,7 @@ static void intel_hdmi_mode_set(struct drm_encoder *encoder,
I915_WRITE(intel_hdmi->sdvox_reg, sdvox);
POSTING_READ(intel_hdmi->sdvox_reg);
intel_hdmi_set_avi_infoframe(encoder);
intel_hdmi_set_avi_infoframe(encoder, adjusted_mode);
intel_hdmi_set_spd_infoframe(encoder);
}