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Commit 9a57f5bb authored by Sonika Jindal's avatar Sonika Jindal Committed by Daniel Vetter
Browse files

drm/i915/skl: Support for edp low_vswing param in vbt 



v2: Adding VBT version check for low_vswing field, and correcting parsing

v3: (Damien)
 - Restrain the scope of the 'vswing' variable
 - Use the more idiomatic "ev_priv->vbt.edp_low_vswing = vswing == 0;"
  instead of if (foo) var = true; else var = false;
 - Shorten edp_vswing_premph_setting to edp_vswing_premph to fit in 80 chars
 - Add the version from which the edp_vswing_premph field is valid in the
  struct definition

Reviewed-by: Satheeshakrishna M <satheeshakrishna.m@intel.com> (v2)
Signed-off-by: default avatarSonika Jindal <sonika.jindal@intel.com>
Signed-off-by: default avatarDamien Lespiau <damien.lespiau@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent ba0635ff

drivers/gpu/drm/i915/i915_drv.h

+1 −0
Original line number Diff line number Diff line
@@ -1466,6 +1466,7 @@ struct intel_vbt_data { 
	bool edp_initialized;

	bool edp_support;

	int edp_bpp;

	bool edp_low_vswing;

	struct edp_power_seq edp_pps;



	struct {

drivers/gpu/drm/i915/intel_bios.c

+7 −0
Original line number Diff line number Diff line
@@ -662,6 +662,13 @@ parse_edp(struct drm_i915_private *dev_priv, struct bdb_header *bdb) 
			      edp_link_params->vswing);

		break;

	}



	if (bdb->version >= 173) {

		uint8_t vswing;



		vswing = (edp->edp_vswing_preemph >> (panel_type * 4)) & 0xF;

		dev_priv->vbt.edp_low_vswing = vswing == 0;

	}

}



static void

drivers/gpu/drm/i915/intel_bios.h

+1 −0
Original line number Diff line number Diff line
@@ -554,6 +554,7 @@ struct bdb_edp { 
	/* ith bit indicates enabled/disabled for (i+1)th panel */

	u16 edp_s3d_feature;

	u16 edp_t3_optimization;

	u64 edp_vswing_preemph;		/* v173 */

} __packed;



struct psr_table {