[Intel-gfx] [RFC 14/60] drm/i915/dg1: Enable DPLL for DG1

[Matthew Auld]

From: Aditya Swarup <aditya.swarup at intel.com>

Add DG1 DPLL Enable register macro and use the macro to enable the
correct DPLL based on PLL id.

Bspec: 49443, 49206

Cc: Clinton Taylor <Clinton.A.Taylor at intel.com>
Cc: Matt Roper <matthew.d.roper at intel.com>
Signed-off-by: Aditya Swarup <aditya.swarup at intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
---
 drivers/gpu/drm/i915/display/intel_dpll_mgr.c | 30 ++++++++++++-------
 drivers/gpu/drm/i915/i915_reg.h               |  4 +++
 2 files changed, 24 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
index 25c6dca096ac..0c58d8012d32 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
@@ -3833,12 +3833,14 @@ static bool combo_pll_get_hw_state(struct drm_i915_private *dev_priv,
 				   struct intel_shared_dpll *pll,
 				   struct intel_dpll_hw_state *hw_state)
 {
-	i915_reg_t enable_reg = CNL_DPLL_ENABLE(pll->info->id);
+	i915_reg_t enable_reg;
 
-	if (IS_ELKHARTLAKE(dev_priv) &&
-	    pll->info->id == DPLL_ID_EHL_DPLL4) {
+	if (IS_DG1(dev_priv))
+		enable_reg = DG1_DPLL_ENABLE(pll->info->id);
+	else if (IS_ELKHARTLAKE(dev_priv) && pll->info->id == DPLL_ID_EHL_DPLL4)
 		enable_reg = MG_PLL_ENABLE(0);
-	}
+	else
+		enable_reg = CNL_DPLL_ENABLE(pll->info->id);
 
 	return icl_pll_get_hw_state(dev_priv, pll, hw_state, enable_reg);
 }
@@ -4036,10 +4038,12 @@ static void icl_pll_enable(struct drm_i915_private *dev_priv,
 static void combo_pll_enable(struct drm_i915_private *dev_priv,
 			     struct intel_shared_dpll *pll)
 {
-	i915_reg_t enable_reg = CNL_DPLL_ENABLE(pll->info->id);
+	i915_reg_t enable_reg;
 
-	if (IS_ELKHARTLAKE(dev_priv) &&
-	    pll->info->id == DPLL_ID_EHL_DPLL4) {
+	if (IS_DG1(dev_priv)) {
+		enable_reg = DG1_DPLL_ENABLE(pll->info->id);
+	} else if (IS_ELKHARTLAKE(dev_priv) &&
+		 pll->info->id == DPLL_ID_EHL_DPLL4) {
 		enable_reg = MG_PLL_ENABLE(0);
 
 		/*
@@ -4049,6 +4053,8 @@ static void combo_pll_enable(struct drm_i915_private *dev_priv,
 		 */
 		pll->wakeref = intel_display_power_get(dev_priv,
 						       POWER_DOMAIN_DPLL_DC_OFF);
+	} else {
+		enable_reg = CNL_DPLL_ENABLE(pll->info->id);
 	}
 
 	icl_pll_power_enable(dev_priv, pll, enable_reg);
@@ -4148,16 +4154,20 @@ static void icl_pll_disable(struct drm_i915_private *dev_priv,
 static void combo_pll_disable(struct drm_i915_private *dev_priv,
 			      struct intel_shared_dpll *pll)
 {
-	i915_reg_t enable_reg = CNL_DPLL_ENABLE(pll->info->id);
+	i915_reg_t enable_reg;
 
-	if (IS_ELKHARTLAKE(dev_priv) &&
-	    pll->info->id == DPLL_ID_EHL_DPLL4) {
+	if (IS_DG1(dev_priv)) {
+		enable_reg = DG1_DPLL_ENABLE(pll->info->id);
+	} else if (IS_ELKHARTLAKE(dev_priv) &&
+		   pll->info->id == DPLL_ID_EHL_DPLL4) {
 		enable_reg = MG_PLL_ENABLE(0);
 		icl_pll_disable(dev_priv, pll, enable_reg);
 
 		intel_display_power_put(dev_priv, POWER_DOMAIN_DPLL_DC_OFF,
 					pll->wakeref);
 		return;
+	} else {
+		enable_reg = CNL_DPLL_ENABLE(pll->info->id);
 	}
 
 	icl_pll_disable(dev_priv, pll, enable_reg);
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index f362c65b1de7..a423946e0f78 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -10307,6 +10307,10 @@ enum skl_power_gate {
 #define MG_PLL_ENABLE(tc_port)	_MMIO_PORT((tc_port), _MG_PLL1_ENABLE, \
 					   _MG_PLL2_ENABLE)
 
+/* DG1 PLL */
+#define DG1_DPLL_ENABLE(pll)    _MMIO_PLL3(pll, DPLL0_ENABLE, DPLL1_ENABLE, \
+					   _MG_PLL1_ENABLE, _MG_PLL2_ENABLE)
+
 #define _MG_REFCLKIN_CTL_PORT1				0x16892C
 #define _MG_REFCLKIN_CTL_PORT2				0x16992C
 #define _MG_REFCLKIN_CTL_PORT3				0x16A92C
-- 
2.26.2