Add support for computing C10 HDMI PLLS using the HDMI PLL algorithm.
Try C10 HDMI tables computed with the algorithm, before using the
consolidated tables.
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_cx0_phy.c | 15 +++++
.../drm/i915/display/intel_pll_algorithm.c | 65 +++++++++++++++++++
.../drm/i915/display/intel_pll_algorithm.h | 2 +
3 files changed, 82 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.c b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
index 41f684c970dc..ebd2ec4023d6 100644
--- a/drivers/gpu/drm/i915/display/intel_cx0_phy.c
+++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
@@ -15,6 +15,7 @@
#include "intel_dp.h"
#include "intel_hdmi.h"
#include "intel_panel.h"
+#include "intel_pll_algorithm.h"
#include "intel_psr.h"
#include "intel_tc.h"
@@ -1980,6 +1981,9 @@ static int intel_c10_phy_check_hdmi_link_rate(int clock)
return MODE_OK;
}
+ if (clock >= 25175 && clock <= 594000)
+ return MODE_OK;
+
return MODE_CLOCK_RANGE;
}
@@ -2030,6 +2034,17 @@ static int intel_c10pll_calc_state(struct intel_crtc_state *crtc_state,
const struct intel_c10pll_state * const *tables;
int i;
+ /* try computed C10 HDMI tables before using consolidated tables */
+ if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) {
+ if (intel_c10_phy_compute_hdmi_tmds_pll(crtc_state->port_clock,
+ &crtc_state->dpll_hw_state.cx0pll.c10) == 0) {
+ intel_c10pll_update_pll(crtc_state, encoder);
+ crtc_state->dpll_hw_state.cx0pll.use_c10 = true;
+ }
+
+ return 0;
+ }
+
tables = intel_c10pll_tables_get(crtc_state, encoder);
if (!tables)
return -EINVAL;
diff --git a/drivers/gpu/drm/i915/display/intel_pll_algorithm.c b/drivers/gpu/drm/i915/display/intel_pll_algorithm.c
index d935715bd3ab..07b712cc0d6f 100644
--- a/drivers/gpu/drm/i915/display/intel_pll_algorithm.c
+++ b/drivers/gpu/drm/i915/display/intel_pll_algorithm.c
@@ -5,6 +5,7 @@
#include <linux/math.h>
#include "i915_reg.h"
+#include "intel_cx0_phy_regs.h"
#include "intel_ddi.h"
#include "intel_ddi_buf_trans.h"
#include "intel_de.h"
@@ -250,3 +251,67 @@ int intel_snps_phy_compute_hdmi_tmds_pll(u64 pixel_clock, struct intel_mpllb_sta
return 0;
}
+
+int intel_c10_phy_compute_hdmi_tmds_pll(u64 pixel_clock, struct intel_c10pll_state *pll_state)
+{
+ struct pll_output_params pll_params;
+ u32 refclk = 38400000;
+ u32 prescaler_divider = 0;
+ u32 ref_range = 1;
+ u32 ana_cp_int_gs = 30;
+ u32 ana_cp_prop_gs = 28;
+ int ret;
+ /* x axis frequencies. One curve in each array per v2i point */
+ const u64 c10_curve_freq_hz[2][8] = {
+ {2500000000, 3000000000, 3000000000, 3500000000, 3500000000, 4000000000, 4000000000, 5000000000},
+ {4000000000, 4600000000, 4601000000, 5400000000, 5401000000, 6600000000, 6601000000, 8001000000}};
+ /* y axis heights multiplied with 1000000000 */
+
+ const u64 c10_curve_0[2][8] = {
+ {41174500, 48605500, 42973700, 49433100, 42408600, 47681900, 40297400, 49131400},
+ {82056800, 94420700, 82323400, 96370600, 81273300, 98630100, 81728700, 99105700}};
+
+ const u64 c10_curve_1[2][8] = {
+ {73300000000000, 66000000000000, 83100000000000, 75300000000000, 99700000000000, 92300000000000, 125000000000000, 110000000000000},
+ {53700000000000, 47700000000000, 62200000000000, 54400000000000, 75100000000000, 63400000000000, 90600000000000, 76300000000000}};
+
+ /* Multiplied with 1000000000000 */
+ const u64 c10_curve_2[2][8] = {
+ {2415790000, 3136460000, 2581990000, 3222670000, 2529330000, 3042020000, 2336970000, 3191460000},
+ {4808390000, 5994250000, 4832730000, 6193730000, 4737700000, 6428750000, 4779200000, 6479340000}};
+
+ ret = _intel_phy_compute_hdmi_tmds_pll(pixel_clock, refclk, ref_range,
+ ana_cp_int_gs, ana_cp_prop_gs,
+ c10_curve_freq_hz, c10_curve_0,
+ c10_curve_1, c10_curve_2, prescaler_divider,
+ &pll_params);
+ if (ret)
+ return ret;
+
+ pll_state->tx = 0x10;
+ pll_state->cmn = 0x1;
+ pll_state->pll[0] = REG_FIELD_PREP(C10_PLL0_DIV5CLK_EN, pll_params.mpll_div5_en) |
+ REG_FIELD_PREP(C10_PLL0_FRACEN, pll_params.fracn_en) |
+ REG_FIELD_PREP(C10_PLL0_PMIX_EN, pll_params.pmix_en) |
+ REG_FIELD_PREP(C10_PLL0_ANA_FREQ_VCO_MASK, pll_params.ana_freq_vco);
+ pll_state->pll[2] = REG_FIELD_PREP(C10_PLL2_MULTIPLIERL_MASK, pll_params.multiplier);
+ pll_state->pll[3] = REG_FIELD_PREP(C10_PLL3_MULTIPLIERH_MASK, pll_params.multiplier >> 8);
+ pll_state->pll[8] = REG_FIELD_PREP(C10_PLL8_SSC_UP_SPREAD, pll_params.ssc_up_spread);
+ pll_state->pll[9] = REG_FIELD_PREP(C10_PLL9_FRACN_DENL_MASK, pll_params.fracn_den);
+ pll_state->pll[10] = REG_FIELD_PREP(C10_PLL10_FRACN_DENH_MASK, pll_params.fracn_den >> 8);
+ pll_state->pll[11] = REG_FIELD_PREP(C10_PLL11_FRACN_QUOT_L_MASK, pll_params.fracn_quot);
+ pll_state->pll[12] = REG_FIELD_PREP(C10_PLL12_FRACN_QUOT_H_MASK, pll_params.fracn_quot >> 8);
+ pll_state->pll[13] = REG_FIELD_PREP(C10_PLL13_FRACN_REM_L_MASK, pll_params.fracn_rem);
+ pll_state->pll[14] = REG_FIELD_PREP(C10_PLL14_FRACN_REM_H_MASK, pll_params.fracn_rem >> 8);
+ pll_state->pll[15] = REG_FIELD_PREP(C10_PLL15_TXCLKDIV_MASK, pll_params.tx_clk_div) |
+ REG_FIELD_PREP(C10_PLL15_HDMIDIV_MASK, pll_params.hdmi_div);
+ pll_state->pll[16] = REG_FIELD_PREP(C10_PLL16_ANA_CPINT, pll_params.ana_cp_int) |
+ REG_FIELD_PREP(C10_PLL16_ANA_CPINTGS_L, ana_cp_int_gs);
+ pll_state->pll[17] = REG_FIELD_PREP(C10_PLL17_ANA_CPINTGS_H_MASK, ana_cp_int_gs >> 1) |
+ REG_FIELD_PREP(C10_PLL17_ANA_CPPROP_L_MASK, pll_params.ana_cp_prop);
+ pll_state->pll[18] = REG_FIELD_PREP(C10_PLL18_ANA_CPPROP_H_MASK, pll_params.ana_cp_prop >> 2) |
+ REG_FIELD_PREP(C10_PLL18_ANA_CPPROPGS_L_MASK, ana_cp_prop_gs);
+ pll_state->pll[19] = REG_FIELD_PREP(C10_PLL19_ANA_CPPROPGS_H_MASK, ana_cp_prop_gs >> 3) |
+ REG_FIELD_PREP(C10_PLL19_ANA_V2I_MASK, pll_params.mpll_ana_v2i);
+ return 0;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_pll_algorithm.h b/drivers/gpu/drm/i915/display/intel_pll_algorithm.h
index 83a620fb3db2..aafbf158403b 100644
--- a/drivers/gpu/drm/i915/display/intel_pll_algorithm.h
+++ b/drivers/gpu/drm/i915/display/intel_pll_algorithm.h
@@ -10,6 +10,7 @@
struct drm_i915_private;
struct intel_atomic_state;
+struct intel_c10pll_state;
struct intel_crtc;
struct intel_crtc_state;
struct intel_encoder;
@@ -35,5 +36,6 @@ struct pll_output_params {
};
int intel_snps_phy_compute_hdmi_tmds_pll(u64 pixel_clock, struct intel_mpllb_state *pll_state);
+int intel_c10_phy_compute_hdmi_tmds_pll(u64 pixel_clock, struct intel_c10pll_state *pll_state);
#endif /* __INTEL_PLL_ALGORITHM_H__ */
--
2.40.1
