drm/i915/icl: Add Voltage swing table for MG PHY DDI Buffer

This table is used for voltage swing programming sequence during DDI
Buffer initialization for MG PHY DDI Buffers on Icelake.

v2 (from Paulo):
* Fix white space issues.

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180323172419.24911-5-paulo.r.zanoni@intel.com

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 229b9d5250c4682b053bebb74d8fc8eeed1b7481..359acbfec4b16d44d0e29a95c3d3a05cb25ab6af 100644 (file)
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -592,6 +592,26 @@ static const struct icl_combo_phy_ddi_buf_trans icl_combo_phy_ddi_translations_e
        { 0x0, 0x00, 0x00 },    /* 350         0.0   */
 };
 
+struct icl_mg_phy_ddi_buf_trans {
+       u32 cri_txdeemph_override_5_0;
+       u32 cri_txdeemph_override_11_6;
+       u32 cri_txdeemph_override_17_12;
+};
+
+static const struct icl_mg_phy_ddi_buf_trans icl_mg_phy_ddi_translations[] = {
+                               /* Voltage swing  pre-emphasis */
+       { 0x0, 0x1B, 0x00 },    /* 0              0   */
+       { 0x0, 0x23, 0x08 },    /* 0              1   */
+       { 0x0, 0x2D, 0x12 },    /* 0              2   */
+       { 0x0, 0x00, 0x00 },    /* 0              3   */
+       { 0x0, 0x23, 0x00 },    /* 1              0   */
+       { 0x0, 0x2B, 0x09 },    /* 1              1   */
+       { 0x0, 0x2E, 0x11 },    /* 1              2   */
+       { 0x0, 0x2F, 0x00 },    /* 2              0   */
+       { 0x0, 0x33, 0x0C },    /* 2              1   */
+       { 0x0, 0x00, 0x00 },    /* 3              0   */
+};
+
 static const struct ddi_buf_trans *
 bdw_get_buf_trans_edp(struct drm_i915_private *dev_priv, int *n_entries)
 {