Commit 0641e54f authored by Lee Shawn C's avatar Lee Shawn C Committed by Radhakrishna Sripada
Browse files

drm/i915/mtl: Add new vswing table for C20 phy to support DP 1.4 



Add vswing table to support DP 1.4 for C20 phy.

v2: rename mtl_c10_trans
v3: add default_entry for mtl_c20_trans_dp14
v4: rename mtl_cx0_trans_dp14

Bspec: 74104
Signed-off-by: default avatarLee Shawn C <shawn.c.lee@intel.com>
Cc: Mika Kahola <mika.kahola@intel.com>
Cc: Clint Taylor <Clinton.A.Taylor@intel.com>
Cc: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Cc: Uma Shankar <uma.shankar@intel.com>
Reviewed-by: default avatarMika Kahola <mika.kahola@intel.com>
Reviewed-by: default avatarRadhakrishna Sripada <radhakrishna.sripada@intel.com>
Signed-off-by: default avatarRadhakrishna Sripada <radhakrishna.sripada@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230609002038.11516-1-shawn.c.lee@intel.com
parent 52820871

drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c

+24 −2
Original line number Diff line number Diff line
@@ -1049,12 +1049,26 @@ static const union intel_ddi_buf_trans_entry _mtl_c10_trans_dp14[] = { 
	{ .snps = { 62, 0, 0  } },      /* preset 9 */

};



static const struct intel_ddi_buf_trans mtl_cx0_trans = {

static const struct intel_ddi_buf_trans mtl_c10_trans_dp14 = {

	.entries = _mtl_c10_trans_dp14,

	.num_entries = ARRAY_SIZE(_mtl_c10_trans_dp14),

	.hdmi_default_entry = ARRAY_SIZE(_mtl_c10_trans_dp14) - 1,

};



/* DP1.4 */

static const union intel_ddi_buf_trans_entry _mtl_c20_trans_dp14[] = {

	{ .snps = { 20, 0, 0  } },      /* preset 0 */

	{ .snps = { 24, 0, 4  } },      /* preset 1 */

	{ .snps = { 30, 0, 9  } },      /* preset 2 */

	{ .snps = { 34, 0, 14 } },      /* preset 3 */

	{ .snps = { 29, 0, 0  } },      /* preset 4 */

	{ .snps = { 34, 0, 5  } },      /* preset 5 */

	{ .snps = { 38, 0, 10 } },      /* preset 6 */

	{ .snps = { 36, 0, 0  } },      /* preset 7 */

	{ .snps = { 40, 0, 6  } },      /* preset 8 */

	{ .snps = { 48, 0, 0  } },      /* preset 9 */

};



/* DP2.0 */

static const union intel_ddi_buf_trans_entry _mtl_c20_trans_uhbr[] = {

	{ .snps = { 48, 0, 0 } },       /* preset 0 */
@@ -1090,6 +1104,12 @@ static const struct intel_ddi_buf_trans mtl_c20_trans_hdmi = { 
	.hdmi_default_entry = 0,

};



static const struct intel_ddi_buf_trans mtl_c20_trans_dp14 = {

	.entries = _mtl_c20_trans_dp14,

	.num_entries = ARRAY_SIZE(_mtl_c20_trans_dp14),

	.hdmi_default_entry = ARRAY_SIZE(_mtl_c20_trans_dp14) - 1,

};



static const struct intel_ddi_buf_trans mtl_c20_trans_uhbr = {

	.entries = _mtl_c20_trans_uhbr,

	.num_entries = ARRAY_SIZE(_mtl_c20_trans_uhbr),
@@ -1678,8 +1698,10 @@ mtl_get_cx0_buf_trans(struct intel_encoder *encoder, 
		return intel_get_buf_trans(&mtl_c20_trans_uhbr, n_entries);

	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI) && !(intel_is_c10phy(i915, phy)))

		return intel_get_buf_trans(&mtl_c20_trans_hdmi, n_entries);

	else if (!intel_is_c10phy(i915, phy))

		return intel_get_buf_trans(&mtl_c20_trans_dp14, n_entries);

	else

		return intel_get_buf_trans(&mtl_cx0_trans, n_entries);

		return intel_get_buf_trans(&mtl_c10_trans_dp14, n_entries);

}



void intel_ddi_buf_trans_init(struct intel_encoder *encoder)