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[2/5] drm/i915/tgl: re-indent code to prepare for DKL changes

Message ID 20190725235643.6870-3-lucas.demarchi@intel.com (mailing list archive)
State New, archived
Headers show
Series Tiger Lake: DKL phy PLLs | expand

Commit Message

Lucas De Marchi July 25, 2019, 11:56 p.m. UTC 
The final save operation into pll_state of the calculations done will
be different for DKL PHY. Prepare for that by reindenting code so it's
easier to check for correctness. This one has no change in behavior.

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Matt Atwood <matthew.s.atwood@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190713010940.17711-10-lucas.demarchi@intel.com
---
 drivers/gpu/drm/i915/display/intel_dpll_mgr.c | 119 ++++++++++--------
 1 file changed, 66 insertions(+), 53 deletions(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
index f9bdf8514a53..7eefd63a8b7e 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
@@ -2804,60 +2804,73 @@  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;
-	} else {
-		pll_state->mg_pll_tdc_coldst_bias_mask = -1U;
-		pll_state->mg_pll_bias_mask = -1U;
-	}
+	/* write pll_state calculations */
+	{
+		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;
 }