Commit c846b619 authored by Paulo Zanoni's avatar Paulo Zanoni Committed by Daniel Vetter
Browse files

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: default avatarPaulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: default avatarAdam Jackson <ajax@redhat.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 0aa534df

drivers/gpu/drm/i915/intel_drv.h

+2 −0
Original line number Diff line number Diff line
@@ -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

drivers/gpu/drm/i915/intel_hdmi.c

+6 −2
Original line number Diff line number Diff line
@@ -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);

}

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