[Intel-gfx] [PATCH v2 11/13] drm/i915/tgl: Add dkl phy pll calculations
José Roberto de Souza
jose.souza at intel.com
Thu Sep 19 00:07:24 UTC 2019
Extending ICL mg calculations to also support dkl calculations.
BSpec: 49204
Signed-off-by: Vandita Kulkarni <vandita.kulkarni at intel.com>
Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
---
drivers/gpu/drm/i915/display/intel_ddi.c | 29 +++-
drivers/gpu/drm/i915/display/intel_dpll_mgr.c | 148 +++++++++++-------
2 files changed, 114 insertions(+), 63 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 78c6974a52d4..2717e7522a38 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -1436,11 +1436,30 @@ static int icl_calc_mg_pll_link(struct drm_i915_private *dev_priv,
ref_clock = dev_priv->cdclk.hw.ref;
- m1 = pll_state->mg_pll_div1 & MG_PLL_DIV1_FBPREDIV_MASK;
- m2_int = pll_state->mg_pll_div0 & MG_PLL_DIV0_FBDIV_INT_MASK;
- m2_frac = (pll_state->mg_pll_div0 & MG_PLL_DIV0_FRACNEN_H) ?
- (pll_state->mg_pll_div0 & MG_PLL_DIV0_FBDIV_FRAC_MASK) >>
- MG_PLL_DIV0_FBDIV_FRAC_SHIFT : 0;
+ if (INTEL_GEN(dev_priv) >= 12) {
+ m1 = pll_state->mg_pll_div0 & DKL_PLL_DIV0_FBPREDIV_MASK;
+ m1 = m1 >> DKL_PLL_DIV0_FBPREDIV_SHIFT;
+ m2_int = pll_state->mg_pll_div0 & DKL_PLL_DIV0_FBDIV_INT_MASK;
+
+ if (pll_state->mg_pll_bias & DKL_PLL_BIAS_FRAC_EN_H) {
+ m2_frac = pll_state->mg_pll_bias &
+ DKL_PLL_BIAS_FBDIV_FRAC_MASK;
+ m2_frac = m2_frac >> DKL_PLL_BIAS_FBDIV_SHIFT;
+ } else {
+ m2_frac = 0;
+ }
+ } else {
+ m1 = pll_state->mg_pll_div1 & MG_PLL_DIV1_FBPREDIV_MASK;
+ m2_int = pll_state->mg_pll_div0 & MG_PLL_DIV0_FBDIV_INT_MASK;
+
+ if (pll_state->mg_pll_div0 & MG_PLL_DIV0_FRACNEN_H) {
+ m2_frac = pll_state->mg_pll_div0 &
+ MG_PLL_DIV0_FBDIV_FRAC_MASK;
+ m2_frac = m2_frac >> MG_PLL_DIV0_FBDIV_FRAC_SHIFT;
+ } else {
+ m2_frac = 0;
+ }
+ }
switch (pll_state->mg_clktop2_hsclkctl &
MG_CLKTOP2_HSCLKCTL_HSDIV_RATIO_MASK) {
diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
index 21249997940d..e6a7280da408 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
@@ -2607,7 +2607,8 @@ enum intel_dpll_id icl_tc_port_to_pll_id(enum tc_port tc_port)
static bool icl_mg_pll_find_divisors(int clock_khz, bool is_dp, bool use_ssc,
u32 *target_dco_khz,
- struct intel_dpll_hw_state *state)
+ struct intel_dpll_hw_state *state,
+ bool is_dkl)
{
u32 dco_min_freq, dco_max_freq;
int div1_vals[] = {7, 5, 3, 2};
@@ -2627,10 +2628,14 @@ static bool icl_mg_pll_find_divisors(int clock_khz, bool is_dp, bool use_ssc,
if (dco < dco_min_freq || dco > dco_max_freq)
continue;
-
if (div2 >= 2) {
- a_divratio = is_dp ? 10 : 5;
- tlinedrv = 2;
+ if (is_dkl) {
+ a_divratio = 5;
+ tlinedrv = 1;
+ } else {
+ a_divratio = is_dp ? 10 : 5;
+ tlinedrv = 2;
+ }
} else {
a_divratio = 5;
tlinedrv = 0;
@@ -2693,11 +2698,12 @@ static bool icl_calc_mg_pll_state(struct intel_crtc_state *crtc_state,
u64 tmp;
bool use_ssc = false;
bool is_dp = !intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI);
+ bool is_dkl = INTEL_GEN(dev_priv) >= 12;
memset(pll_state, 0, sizeof(*pll_state));
if (!icl_mg_pll_find_divisors(clock, is_dp, use_ssc, &dco_khz,
- pll_state)) {
+ pll_state, is_dkl)) {
DRM_DEBUG_KMS("Failed to find divisors for clock %d\n", clock);
return false;
}
@@ -2705,8 +2711,12 @@ static bool icl_calc_mg_pll_state(struct intel_crtc_state *crtc_state,
m1div = 2;
m2div_int = dco_khz / (refclk_khz * m1div);
if (m2div_int > 255) {
+ if (is_dkl)
+ goto no_mdiv;
+
m1div = 4;
m2div_int = dco_khz / (refclk_khz * m1div);
+no_mdiv:
if (m2div_int > 255) {
DRM_DEBUG_KMS("Failed to find mdiv for clock %d\n",
clock);
@@ -2732,7 +2742,7 @@ static bool icl_calc_mg_pll_state(struct intel_crtc_state *crtc_state,
break;
case 38400:
iref_ndiv = 2;
- iref_trim = 28;
+ iref_trim = is_dkl ? 24 : 28;
iref_pulse_w = 1;
break;
default:
@@ -2786,60 +2796,82 @@ static bool icl_calc_mg_pll_state(struct intel_crtc_state *crtc_state,
}
ssc_steplog = 4;
- pll_state->mg_pll_div0 = (m2div_rem > 0 ? MG_PLL_DIV0_FRACNEN_H : 0) |
- MG_PLL_DIV0_FBDIV_FRAC(m2div_frac) |
- MG_PLL_DIV0_FBDIV_INT(m2div_int);
-
- pll_state->mg_pll_div1 = MG_PLL_DIV1_IREF_NDIVRATIO(iref_ndiv) |
- MG_PLL_DIV1_DITHER_DIV_2 |
- MG_PLL_DIV1_NDIVRATIO(1) |
- MG_PLL_DIV1_FBPREDIV(m1div);
-
- pll_state->mg_pll_lf = MG_PLL_LF_TDCTARGETCNT(tdc_targetcnt) |
- MG_PLL_LF_AFCCNTSEL_512 |
- MG_PLL_LF_GAINCTRL(1) |
- MG_PLL_LF_INT_COEFF(int_coeff) |
- MG_PLL_LF_PROP_COEFF(prop_coeff);
-
- pll_state->mg_pll_frac_lock = MG_PLL_FRAC_LOCK_TRUELOCK_CRIT_32 |
- MG_PLL_FRAC_LOCK_EARLYLOCK_CRIT_32 |
- MG_PLL_FRAC_LOCK_LOCKTHRESH(10) |
- MG_PLL_FRAC_LOCK_DCODITHEREN |
- MG_PLL_FRAC_LOCK_FEEDFWRDGAIN(feedfwgain);
- if (use_ssc || m2div_rem > 0)
- pll_state->mg_pll_frac_lock |= MG_PLL_FRAC_LOCK_FEEDFWRDCAL_EN;
-
- pll_state->mg_pll_ssc = (use_ssc ? MG_PLL_SSC_EN : 0) |
- MG_PLL_SSC_TYPE(2) |
- MG_PLL_SSC_STEPLENGTH(ssc_steplen) |
- MG_PLL_SSC_STEPNUM(ssc_steplog) |
- MG_PLL_SSC_FLLEN |
- MG_PLL_SSC_STEPSIZE(ssc_stepsize);
-
- pll_state->mg_pll_tdc_coldst_bias = MG_PLL_TDC_COLDST_COLDSTART |
- MG_PLL_TDC_COLDST_IREFINT_EN |
- MG_PLL_TDC_COLDST_REFBIAS_START_PULSE_W(iref_pulse_w) |
- MG_PLL_TDC_TDCOVCCORR_EN |
- MG_PLL_TDC_TDCSEL(3);
-
- pll_state->mg_pll_bias = MG_PLL_BIAS_BIAS_GB_SEL(3) |
- MG_PLL_BIAS_INIT_DCOAMP(0x3F) |
- MG_PLL_BIAS_BIAS_BONUS(10) |
- MG_PLL_BIAS_BIASCAL_EN |
- MG_PLL_BIAS_CTRIM(12) |
- MG_PLL_BIAS_VREF_RDAC(4) |
- MG_PLL_BIAS_IREFTRIM(iref_trim);
-
- if (refclk_khz == 38400) {
- pll_state->mg_pll_tdc_coldst_bias_mask = MG_PLL_TDC_COLDST_COLDSTART;
- pll_state->mg_pll_bias_mask = 0;
+ if (is_dkl) {
+ pll_state->mg_pll_div0 = DKL_PLL_DIV0_INTEG_COEFF(int_coeff) |
+ DKL_PLL_DIV0_PROP_COEFF(prop_coeff) |
+ DKL_PLL_DIV0_FBPREDIV(m1div) |
+ DKL_PLL_DIV0_FBDIV_INT(m2div_int);
+
+ pll_state->mg_pll_div1 = DKL_PLL_DIV1_IREF_TRIM(iref_trim) |
+ DKL_PLL_DIV1_TDC_TARGET_CNT(tdc_targetcnt);
+
+ pll_state->mg_pll_ssc = DKL_PLL_SSC_IREF_NDIV_RATIO(iref_ndiv) |
+ DKL_PLL_SSC_STEP_LEN(ssc_steplen) |
+ DKL_PLL_SSC_STEP_NUM(ssc_steplog) |
+ (use_ssc ? DKL_PLL_SSC_EN : 0);
+
+ pll_state->mg_pll_bias = (m2div_frac ? DKL_PLL_BIAS_FRAC_EN_H : 0) |
+ DKL_PLL_BIAS_FBDIV_FRAC(m2div_frac);
+
+ pll_state->mg_pll_tdc_coldst_bias =
+ DKL_PLL_TDC_SSC_STEP_SIZE(ssc_stepsize) |
+ DKL_PLL_TDC_FEED_FWD_GAIN(feedfwgain);
} else {
- pll_state->mg_pll_tdc_coldst_bias_mask = -1U;
- pll_state->mg_pll_bias_mask = -1U;
- }
+ pll_state->mg_pll_div0 = (m2div_rem > 0 ? MG_PLL_DIV0_FRACNEN_H : 0) |
+ MG_PLL_DIV0_FBDIV_FRAC(m2div_frac) |
+ MG_PLL_DIV0_FBDIV_INT(m2div_int);
+
+ pll_state->mg_pll_div1 = MG_PLL_DIV1_IREF_NDIVRATIO(iref_ndiv) |
+ MG_PLL_DIV1_DITHER_DIV_2 |
+ MG_PLL_DIV1_NDIVRATIO(1) |
+ MG_PLL_DIV1_FBPREDIV(m1div);
+
+ pll_state->mg_pll_lf = MG_PLL_LF_TDCTARGETCNT(tdc_targetcnt) |
+ MG_PLL_LF_AFCCNTSEL_512 |
+ MG_PLL_LF_GAINCTRL(1) |
+ MG_PLL_LF_INT_COEFF(int_coeff) |
+ MG_PLL_LF_PROP_COEFF(prop_coeff);
+
+ pll_state->mg_pll_frac_lock = MG_PLL_FRAC_LOCK_TRUELOCK_CRIT_32 |
+ MG_PLL_FRAC_LOCK_EARLYLOCK_CRIT_32 |
+ MG_PLL_FRAC_LOCK_LOCKTHRESH(10) |
+ MG_PLL_FRAC_LOCK_DCODITHEREN |
+ MG_PLL_FRAC_LOCK_FEEDFWRDGAIN(feedfwgain);
+ if (use_ssc || m2div_rem > 0)
+ pll_state->mg_pll_frac_lock |= MG_PLL_FRAC_LOCK_FEEDFWRDCAL_EN;
+
+ pll_state->mg_pll_ssc = (use_ssc ? MG_PLL_SSC_EN : 0) |
+ MG_PLL_SSC_TYPE(2) |
+ MG_PLL_SSC_STEPLENGTH(ssc_steplen) |
+ MG_PLL_SSC_STEPNUM(ssc_steplog) |
+ MG_PLL_SSC_FLLEN |
+ MG_PLL_SSC_STEPSIZE(ssc_stepsize);
+
+ pll_state->mg_pll_tdc_coldst_bias = MG_PLL_TDC_COLDST_COLDSTART |
+ MG_PLL_TDC_COLDST_IREFINT_EN |
+ MG_PLL_TDC_COLDST_REFBIAS_START_PULSE_W(iref_pulse_w) |
+ MG_PLL_TDC_TDCOVCCORR_EN |
+ MG_PLL_TDC_TDCSEL(3);
+
+ pll_state->mg_pll_bias = MG_PLL_BIAS_BIAS_GB_SEL(3) |
+ MG_PLL_BIAS_INIT_DCOAMP(0x3F) |
+ MG_PLL_BIAS_BIAS_BONUS(10) |
+ MG_PLL_BIAS_BIASCAL_EN |
+ MG_PLL_BIAS_CTRIM(12) |
+ MG_PLL_BIAS_VREF_RDAC(4) |
+ MG_PLL_BIAS_IREFTRIM(iref_trim);
+
+ if (refclk_khz == 38400) {
+ pll_state->mg_pll_tdc_coldst_bias_mask = MG_PLL_TDC_COLDST_COLDSTART;
+ pll_state->mg_pll_bias_mask = 0;
+ } else {
+ pll_state->mg_pll_tdc_coldst_bias_mask = -1U;
+ pll_state->mg_pll_bias_mask = -1U;
+ }
- pll_state->mg_pll_tdc_coldst_bias &= pll_state->mg_pll_tdc_coldst_bias_mask;
- pll_state->mg_pll_bias &= pll_state->mg_pll_bias_mask;
+ pll_state->mg_pll_tdc_coldst_bias &= pll_state->mg_pll_tdc_coldst_bias_mask;
+ pll_state->mg_pll_bias &= pll_state->mg_pll_bias_mask;
+ }
return true;
}
--
2.23.0
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