drm/i915/mtl: Rename the link_bit_rate to clock in C20 pll_state

With the cleanup of the misleading clock value to avoid extra
calculations to convert between link_bit_rate and clock, use
one standard "clock" field for the c20 pll which works with
crtc_state->port_clock field.

Cc: Clint Taylor <clinton.a.taylor@intel.com>
Cc: Mika Kahola <mika.kahola@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231207221025.2032207-4-radhakrishna.sripada@intel.com

drivers/gpu/drm/i915/display/intel_cx0_phy.c

@@ -745,7 +745,7 @@ static const struct intel_c10pll_state * const mtl_c10_edp_tables[] = {
 
 /* C20 basic DP 1.4 tables */
 static const struct intel_c20pll_state mtl_c20_dp_rbr = {
-	.link_bit_rate = 162000,
+	.clock = 162000,
 	.tx = {	0xbe88, /* tx cfg0 */
 		0x5800, /* tx cfg1 */
 		0x0000, /* tx cfg2 */
@@ -770,7 +770,7 @@ static const struct intel_c20pll_state mtl_c20_dp_rbr = {
 };
 
 static const struct intel_c20pll_state mtl_c20_dp_hbr1 = {
-	.link_bit_rate = 270000,
+	.clock = 270000,
 	.tx = {	0xbe88, /* tx cfg0 */
 		0x4800, /* tx cfg1 */
 		0x0000, /* tx cfg2 */
@@ -795,7 +795,7 @@ static const struct intel_c20pll_state mtl_c20_dp_hbr1 = {
 };
 
 static const struct intel_c20pll_state mtl_c20_dp_hbr2 = {
-	.link_bit_rate = 540000,
+	.clock = 540000,
 	.tx = {	0xbe88, /* tx cfg0 */
 		0x4800, /* tx cfg1 */
 		0x0000, /* tx cfg2 */
@@ -820,7 +820,7 @@ static const struct intel_c20pll_state mtl_c20_dp_hbr2 = {
 };
 
 static const struct intel_c20pll_state mtl_c20_dp_hbr3 = {
-	.link_bit_rate = 810000,
+	.clock = 810000,
 	.tx = {	0xbe88, /* tx cfg0 */
 		0x4800, /* tx cfg1 */
 		0x0000, /* tx cfg2 */
@@ -846,7 +846,7 @@ static const struct intel_c20pll_state mtl_c20_dp_hbr3 = {
 
 /* C20 basic DP 2.0 tables */
 static const struct intel_c20pll_state mtl_c20_dp_uhbr10 = {
-	.link_bit_rate = 1000000, /* 10 Gbps */
+	.clock = 1000000, /* 10 Gbps */
 	.tx = {	0xbe21, /* tx cfg0 */
 		0x4800, /* tx cfg1 */
 		0x0000, /* tx cfg2 */
@@ -870,7 +870,7 @@ static const struct intel_c20pll_state mtl_c20_dp_uhbr10 = {
 };
 
 static const struct intel_c20pll_state mtl_c20_dp_uhbr13_5 = {
-	.link_bit_rate = 1350000, /* 13.5 Gbps */
+	.clock = 1350000, /* 13.5 Gbps */
 	.tx = {	0xbea0, /* tx cfg0 */
 		0x4800, /* tx cfg1 */
 		0x0000, /* tx cfg2 */
@@ -895,7 +895,7 @@ static const struct intel_c20pll_state mtl_c20_dp_uhbr13_5 = {
 };
 
 static const struct intel_c20pll_state mtl_c20_dp_uhbr20 = {
-	.link_bit_rate = 2000000, /* 20 Gbps */
+	.clock = 2000000, /* 20 Gbps */
 	.tx = {	0xbe20, /* tx cfg0 */
 		0x4800, /* tx cfg1 */
 		0x0000, /* tx cfg2 */
@@ -1514,7 +1514,7 @@ static const struct intel_c10pll_state * const mtl_c10_hdmi_tables[] = {
 };
 
 static const struct intel_c20pll_state mtl_c20_hdmi_25_175 = {
-	.link_bit_rate = 25175,
+	.clock = 25175,
 	.tx = {  0xbe88, /* tx cfg0 */
 		  0x9800, /* tx cfg1 */
 		  0x0000, /* tx cfg2 */
@@ -1539,7 +1539,7 @@ static const struct intel_c20pll_state mtl_c20_hdmi_25_175 = {
 };
 
 static const struct intel_c20pll_state mtl_c20_hdmi_27_0 = {
-	.link_bit_rate = 27000,
+	.clock = 27000,
 	.tx = {  0xbe88, /* tx cfg0 */
 		  0x9800, /* tx cfg1 */
 		  0x0000, /* tx cfg2 */
@@ -1564,7 +1564,7 @@ static const struct intel_c20pll_state mtl_c20_hdmi_27_0 = {
 };
 
 static const struct intel_c20pll_state mtl_c20_hdmi_74_25 = {
-	.link_bit_rate = 74250,
+	.clock = 74250,
 	.tx = {  0xbe88, /* tx cfg0 */
 		  0x9800, /* tx cfg1 */
 		  0x0000, /* tx cfg2 */
@@ -1589,7 +1589,7 @@ static const struct intel_c20pll_state mtl_c20_hdmi_74_25 = {
 };
 
 static const struct intel_c20pll_state mtl_c20_hdmi_148_5 = {
-	.link_bit_rate = 148500,
+	.clock = 148500,
 	.tx = {  0xbe88, /* tx cfg0 */
 		  0x9800, /* tx cfg1 */
 		  0x0000, /* tx cfg2 */
@@ -1614,7 +1614,7 @@ static const struct intel_c20pll_state mtl_c20_hdmi_148_5 = {
 };
 
 static const struct intel_c20pll_state mtl_c20_hdmi_594 = {
-	.link_bit_rate = 594000,
+	.clock = 594000,
 	.tx = {  0xbe88, /* tx cfg0 */
 		  0x9800, /* tx cfg1 */
 		  0x0000, /* tx cfg2 */
@@ -1639,7 +1639,7 @@ static const struct intel_c20pll_state mtl_c20_hdmi_594 = {
 };
 
 static const struct intel_c20pll_state mtl_c20_hdmi_300 = {
-	.link_bit_rate = 3000000,
+	.clock = 3000000,
 	.tx = {  0xbe98, /* tx cfg0 */
 		  0x9800, /* tx cfg1 */
 		  0x0000, /* tx cfg2 */
@@ -1664,7 +1664,7 @@ static const struct intel_c20pll_state mtl_c20_hdmi_300 = {
 };
 
 static const struct intel_c20pll_state mtl_c20_hdmi_600 = {
-	.link_bit_rate = 6000000,
+	.clock = 6000000,
 	.tx = {  0xbe98, /* tx cfg0 */
 		  0x9800, /* tx cfg1 */
 		  0x0000, /* tx cfg2 */
@@ -1689,7 +1689,7 @@ static const struct intel_c20pll_state mtl_c20_hdmi_600 = {
 };
 
 static const struct intel_c20pll_state mtl_c20_hdmi_800 = {
-	.link_bit_rate = 8000000,
+	.clock = 8000000,
 	.tx = {  0xbe98, /* tx cfg0 */
 		  0x9800, /* tx cfg1 */
 		  0x0000, /* tx cfg2 */
@@ -1714,7 +1714,7 @@ static const struct intel_c20pll_state mtl_c20_hdmi_800 = {
 };
 
 static const struct intel_c20pll_state mtl_c20_hdmi_1000 = {
-	.link_bit_rate = 10000000,
+	.clock = 10000000,
 	.tx = {  0xbe98, /* tx cfg0 */
 		  0x9800, /* tx cfg1 */
 		  0x0000, /* tx cfg2 */
@@ -1739,7 +1739,7 @@ static const struct intel_c20pll_state mtl_c20_hdmi_1000 = {
 };
 
 static const struct intel_c20pll_state mtl_c20_hdmi_1200 = {
-	.link_bit_rate = 12000000,
+	.clock = 12000000,
 	.tx = {  0xbe98, /* tx cfg0 */
 		  0x9800, /* tx cfg1 */
 		  0x0000, /* tx cfg2 */
@@ -1988,7 +1988,7 @@ static int intel_c20_compute_hdmi_tmds_pll(u64 pixel_clock, struct intel_c20pll_
 	else
 		mpllb_ana_freq_vco = MPLLB_ANA_FREQ_VCO_0;
 
-	pll_state->link_bit_rate	= pixel_clock;
+	pll_state->clock	= pixel_clock;
 	pll_state->tx[0]	= 0xbe88;
 	pll_state->tx[1]	= 0x9800;
 	pll_state->tx[2]	= 0x0000;
@@ -2024,7 +2024,7 @@ static int intel_c20_phy_check_hdmi_link_rate(int clock)
 	int i;
 
 	for (i = 0; tables[i]; i++) {
-		if (clock == tables[i]->link_bit_rate)
+		if (clock == tables[i]->clock)
 			return MODE_OK;
 	}
 
@@ -2076,7 +2076,7 @@ static int intel_c20pll_calc_state(struct intel_crtc_state *crtc_state,
 		return -EINVAL;
 
 	for (i = 0; tables[i]; i++) {
-		if (crtc_state->port_clock == tables[i]->link_bit_rate) {
+		if (crtc_state->port_clock == tables[i]->clock) {
 			crtc_state->cx0pll_state.c20 = *tables[i];
 			return 0;
 		}
@@ -2174,7 +2174,7 @@ void intel_c20pll_dump_hw_state(struct drm_i915_private *i915,
 	drm_dbg_kms(&i915->drm, "cmn[0] = 0x%.4x, cmn[1] = 0x%.4x, cmn[2] = 0x%.4x, cmn[3] = 0x%.4x\n",
 		    hw_state->cmn[0], hw_state->cmn[1], hw_state->cmn[2], hw_state->cmn[3]);
 
-	if (intel_c20_use_mplla(hw_state->link_bit_rate)) {
+	if (intel_c20_use_mplla(hw_state->clock)) {
 		for (i = 0; i < ARRAY_SIZE(hw_state->mplla); i++)
 			drm_dbg_kms(&i915->drm, "mplla[%d] = 0x%.4x\n", i, hw_state->mplla[i]);
 	} else {

drivers/gpu/drm/i915/display/intel_display_types.h

@@ -1022,7 +1022,7 @@ struct intel_c10pll_state {
 };
 
 struct intel_c20pll_state {
-	u32 link_bit_rate; /* in kHz */
+	u32 clock; /* in kHz */
 	u16 tx[3];
 	u16 cmn[4];
 	union {