drm/i915/gen11: Program ICL_DPCLKA_CFGCR0 according to PHY

Although the register name implies that it operates on DDI's,
DPCLKA_CFGCR0_ICL actually needs to be programmed according to the PHY
that's in use.  I.e., when using EHL's DDI-D on combo PHY A, the bits
described as "port A" in the bspec are what we need to set.  The bspec
clarifies:

        "[For EHL] DDID clock tied to DDIA clock, so DPCLKA_CFGCR0 DDIA
        Clock Select chooses the PLL for both DDIA and DDID and drives
        port A in all cases."

Also, since the CNL DPCLKA_CFGCR0 bit defines are still port-based, we
create separate ICL-specific defines that accept the PHY rather than
trying to share the same bit definitions between CNL and ICL.

v5: Make icl_dpclka_cfgcr0_clk_off() take phy rather than port.  When
    splitting the original patch the hunk to handle this wound up too
    late in the series.  (Sparse)

v6: Since we're already changing this code,
    s/DPCLKA_CFGCR0_ICL/ICL_DPCLKA_CFGCR0/ for consistency.  (Jose)

Bspec: 33148
Cc: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190709183934.445-3-matthew.d.roper@intel.com

1 files changed, 20 insertions, 13 deletions

diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c
index 3cf95c34143c..8f1324c2f539 100644
--- a/drivers/gpu/drm/i915/display/icl_dsi.c
+++ b/drivers/gpu/drm/i915/display/icl_dsi.c
@@ -560,14 +560,16 @@ static void gen11_dsi_gate_clocks(struct intel_encoder *encoder)
 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
 	u32 tmp;
 	enum port port;
+	enum phy phy;
 
 	mutex_lock(&dev_priv->dpll_lock);
-	tmp = I915_READ(DPCLKA_CFGCR0_ICL);
+	tmp = I915_READ(ICL_DPCLKA_CFGCR0);
 	for_each_dsi_port(port, intel_dsi->ports) {
-		tmp |= DPCLKA_CFGCR0_DDI_CLK_OFF(port);
+		phy = intel_port_to_phy(dev_priv, port);
+		tmp |= ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy);
 	}
 
-	I915_WRITE(DPCLKA_CFGCR0_ICL, tmp);
+	I915_WRITE(ICL_DPCLKA_CFGCR0, tmp);
 	mutex_unlock(&dev_priv->dpll_lock);
 }
 
@@ -577,14 +579,16 @@ static void gen11_dsi_ungate_clocks(struct intel_encoder *encoder)
 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
 	u32 tmp;
 	enum port port;
+	enum phy phy;
 
 	mutex_lock(&dev_priv->dpll_lock);
-	tmp = I915_READ(DPCLKA_CFGCR0_ICL);
+	tmp = I915_READ(ICL_DPCLKA_CFGCR0);
 	for_each_dsi_port(port, intel_dsi->ports) {
-		tmp &= ~DPCLKA_CFGCR0_DDI_CLK_OFF(port);
+		phy = intel_port_to_phy(dev_priv, port);
+		tmp &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy);
 	}
 
-	I915_WRITE(DPCLKA_CFGCR0_ICL, tmp);
+	I915_WRITE(ICL_DPCLKA_CFGCR0, tmp);
 	mutex_unlock(&dev_priv->dpll_lock);
 }
 
@@ -595,23 +599,26 @@ static void gen11_dsi_map_pll(struct intel_encoder *encoder,
 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
 	struct intel_shared_dpll *pll = crtc_state->shared_dpll;
 	enum port port;
+	enum phy phy;
 	u32 val;
 
 	mutex_lock(&dev_priv->dpll_lock);
 
-	val = I915_READ(DPCLKA_CFGCR0_ICL);
+	val = I915_READ(ICL_DPCLKA_CFGCR0);
 	for_each_dsi_port(port, intel_dsi->ports) {
-		val &= ~DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(port);
-		val |= DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, port);
+		phy = intel_port_to_phy(dev_priv, port);
+		val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy);
+		val |= ICL_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy);
 	}
-	I915_WRITE(DPCLKA_CFGCR0_ICL, val);
+	I915_WRITE(ICL_DPCLKA_CFGCR0, val);
 
 	for_each_dsi_port(port, intel_dsi->ports) {
-		val &= ~DPCLKA_CFGCR0_DDI_CLK_OFF(port);
+		phy = intel_port_to_phy(dev_priv, port);
+		val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy);
 	}
-	I915_WRITE(DPCLKA_CFGCR0_ICL, val);
+	I915_WRITE(ICL_DPCLKA_CFGCR0, val);
 
-	POSTING_READ(DPCLKA_CFGCR0_ICL);
+	POSTING_READ(ICL_DPCLKA_CFGCR0);
 
 	mutex_unlock(&dev_priv->dpll_lock);
 }