Commit 0fdd4918 authored by Rodrigo Vivi's avatar Rodrigo Vivi
Browse files

drm/i915: KBL - Recommended buffer translation programming for DisplayPort 



According to spec: "KBL re-uses SKL values, except where
specific KBL values are listed."

And recently spec has changed adding different table for Display Port only.
But for all SKUs (H,S,U,Y) we have slightly different values.

v2: Fix wrong condition spotted by Jani.
v3: Fix 7th entry of KBL H and S table - by Manasi.

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: default avatarManasi Navare <manasi.d.navare@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1476806256-13318-1-git-send-email-rodrigo.vivi@intel.com
parent 0a91877c

drivers/gpu/drm/i915/intel_ddi.c

+78 −10
Original line number Diff line number Diff line
@@ -167,8 +167,47 @@ static const struct ddi_buf_trans skl_y_ddi_translations_dp[] = { 
	{ 0x80005012, 0x000000C0, 0x3 },

};



/* Kabylake H and S */

static const struct ddi_buf_trans kbl_ddi_translations_dp[] = {

	{ 0x00002016, 0x000000A0, 0x0 },

	{ 0x00005012, 0x0000009B, 0x0 },

	{ 0x00007011, 0x00000088, 0x0 },

	{ 0x80009010, 0x000000C0, 0x1 },

	{ 0x00002016, 0x0000009B, 0x0 },

	{ 0x00005012, 0x00000088, 0x0 },

	{ 0x80007011, 0x000000C0, 0x1 },

	{ 0x00002016, 0x00000097, 0x0 },

	{ 0x80005012, 0x000000C0, 0x1 },

};



/* Kabylake U */

static const struct ddi_buf_trans kbl_u_ddi_translations_dp[] = {

	{ 0x0000201B, 0x000000A1, 0x0 },

	{ 0x00005012, 0x00000088, 0x0 },

	{ 0x80007011, 0x000000CD, 0x3 },

	{ 0x80009010, 0x000000C0, 0x3 },

	{ 0x0000201B, 0x0000009D, 0x0 },

	{ 0x80005012, 0x000000C0, 0x3 },

	{ 0x80007011, 0x000000C0, 0x3 },

	{ 0x00002016, 0x0000004F, 0x0 },

	{ 0x80005012, 0x000000C0, 0x3 },

};



/* Kabylake Y */

static const struct ddi_buf_trans kbl_y_ddi_translations_dp[] = {

	{ 0x00001017, 0x000000A1, 0x0 },

	{ 0x00005012, 0x00000088, 0x0 },

	{ 0x80007011, 0x000000CD, 0x3 },

	{ 0x8000800F, 0x000000C0, 0x3 },

	{ 0x00001017, 0x0000009D, 0x0 },

	{ 0x80005012, 0x000000C0, 0x3 },

	{ 0x80007011, 0x000000C0, 0x3 },

	{ 0x00001017, 0x0000004C, 0x0 },

	{ 0x80005012, 0x000000C0, 0x3 },

};



/*

 * Skylake H and S

 * Skylake/Kabylake H and S

 * eDP 1.4 low vswing translation parameters

 */

static const struct ddi_buf_trans skl_ddi_translations_edp[] = {
@@ -185,7 +224,7 @@ static const struct ddi_buf_trans skl_ddi_translations_edp[] = { 
};



/*

 * Skylake U

 * Skylake/Kabylake U

 * eDP 1.4 low vswing translation parameters

 */

static const struct ddi_buf_trans skl_u_ddi_translations_edp[] = {
@@ -202,7 +241,7 @@ static const struct ddi_buf_trans skl_u_ddi_translations_edp[] = { 
};



/*

 * Skylake Y

 * Skylake/Kabylake Y

 * eDP 1.4 low vswing translation parameters

 */

static const struct ddi_buf_trans skl_y_ddi_translations_edp[] = {
@@ -218,7 +257,7 @@ static const struct ddi_buf_trans skl_y_ddi_translations_edp[] = { 
	{ 0x00000018, 0x0000008A, 0x0 },

};



/* Skylake U, H and S */

/* Skylake/Kabylake U, H and S */

static const struct ddi_buf_trans skl_ddi_translations_hdmi[] = {

	{ 0x00000018, 0x000000AC, 0x0 },

	{ 0x00005012, 0x0000009D, 0x0 },
@@ -233,7 +272,7 @@ static const struct ddi_buf_trans skl_ddi_translations_hdmi[] = { 
	{ 0x80000018, 0x000000C0, 0x1 },

};



/* Skylake Y */

/* Skylake/Kabylake Y */

static const struct ddi_buf_trans skl_y_ddi_translations_hdmi[] = {

	{ 0x00000018, 0x000000A1, 0x0 },

	{ 0x00005012, 0x000000DF, 0x0 },
@@ -334,10 +373,10 @@ bdw_get_buf_trans_edp(struct drm_i915_private *dev_priv, int *n_entries) 
static const struct ddi_buf_trans *

skl_get_buf_trans_dp(struct drm_i915_private *dev_priv, int *n_entries)

{

	if (IS_SKL_ULX(dev_priv) || IS_KBL_ULX(dev_priv)) {

	if (IS_SKL_ULX(dev_priv)) {

		*n_entries = ARRAY_SIZE(skl_y_ddi_translations_dp);

		return skl_y_ddi_translations_dp;

	} else if (IS_SKL_ULT(dev_priv) || IS_KBL_ULT(dev_priv)) {

	} else if (IS_SKL_ULT(dev_priv)) {

		*n_entries = ARRAY_SIZE(skl_u_ddi_translations_dp);

		return skl_u_ddi_translations_dp;

	} else {
@@ -346,6 +385,21 @@ skl_get_buf_trans_dp(struct drm_i915_private *dev_priv, int *n_entries) 
	}

}



static const struct ddi_buf_trans *

kbl_get_buf_trans_dp(struct drm_i915_private *dev_priv, int *n_entries)

{

	if (IS_KBL_ULX(dev_priv)) {

		*n_entries = ARRAY_SIZE(kbl_y_ddi_translations_dp);

		return kbl_y_ddi_translations_dp;

	} else if (IS_KBL_ULT(dev_priv)) {

		*n_entries = ARRAY_SIZE(kbl_u_ddi_translations_dp);

		return kbl_u_ddi_translations_dp;

	} else {

		*n_entries = ARRAY_SIZE(kbl_ddi_translations_dp);

		return kbl_ddi_translations_dp;

	}

}



static const struct ddi_buf_trans *

skl_get_buf_trans_edp(struct drm_i915_private *dev_priv, int *n_entries)

{
@@ -362,6 +416,9 @@ skl_get_buf_trans_edp(struct drm_i915_private *dev_priv, int *n_entries) 
		}

	}



	if (IS_KABYLAKE(dev_priv))

		return kbl_get_buf_trans_dp(dev_priv, n_entries);

	else

		return skl_get_buf_trans_dp(dev_priv, n_entries);

}
@@ -430,7 +487,13 @@ void intel_prepare_dp_ddi_buffers(struct intel_encoder *encoder) 
	if (IS_BROXTON(dev_priv))

		return;



	if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) {

	if (IS_KABYLAKE(dev_priv)) {

		ddi_translations_fdi = NULL;

		ddi_translations_dp =

				kbl_get_buf_trans_dp(dev_priv, &n_dp_entries);

		ddi_translations_edp =

				skl_get_buf_trans_edp(dev_priv, &n_edp_entries);

	} else if (IS_SKYLAKE(dev_priv)) {

		ddi_translations_fdi = NULL;

		ddi_translations_dp =

				skl_get_buf_trans_dp(dev_priv, &n_dp_entries);
@@ -1436,7 +1499,12 @@ static void skl_ddi_set_iboost(struct intel_encoder *encoder, u32 level) 
		if (dp_iboost) {

			iboost = dp_iboost;

		} else {

			ddi_translations = skl_get_buf_trans_dp(dev_priv, &n_entries);

			if (IS_KABYLAKE(dev_priv))

				ddi_translations = kbl_get_buf_trans_dp(dev_priv,

									&n_entries);

			else

				ddi_translations = skl_get_buf_trans_dp(dev_priv,

									&n_entries);

			iboost = ddi_translations[level].i_boost;

		}

	} else if (type == INTEL_OUTPUT_EDP) {

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