From: Ville Syrjälä <ville.syrj...@linux.intel.com>
All the DPCLKA_CFGCR handling follows a common pattern. Let's
extract that to a small helper that just takes a few parameters
each caller can customize.
Reviewed-by: Lucas De Marchi <lucas.demar...@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
drivers/gpu/drm/i915/display/intel_ddi.c | 108 +++++++++--------------
1 file changed, 44 insertions(+), 64 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c
b/drivers/gpu/drm/i915/display/intel_ddi.c
index c98bdf456958..8b7ef5f3ba03 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -1597,11 +1597,37 @@ static u32 icl_dpclka_cfgcr0_clk_off(struct
drm_i915_private *dev_priv,
return 0;
}
+static void _cnl_ddi_enable_clock(struct drm_i915_private *i915, i915_reg_t
reg,
+ u32 clk_sel_mask, u32 clk_sel, u32 clk_off)
+{
+ mutex_lock(&i915->dpll.lock);
+
+ intel_de_rmw(i915, reg, clk_sel_mask, clk_sel);
+
+ /*
+ * "This step and the step before must be
+ * done with separate register writes."
+ */
+ intel_de_rmw(i915, reg, clk_off, 0);
+
+ mutex_unlock(&i915->dpll.lock);
+}
+
+static void _cnl_ddi_disable_clock(struct drm_i915_private *i915, i915_reg_t
reg,
+ u32 clk_off)
+{
+ mutex_lock(&i915->dpll.lock);
+
+ intel_de_rmw(i915, reg, 0, clk_off);
+
+ mutex_unlock(&i915->dpll.lock);
+}
+
static void dg1_ddi_enable_clock(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
- struct intel_shared_dpll *pll = crtc_state->shared_dpll;
+ const struct intel_shared_dpll *pll = crtc_state->shared_dpll;
enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
if (drm_WARN_ON(&dev_priv->drm, !pll))
@@ -1616,16 +1642,10 @@ static void dg1_ddi_enable_clock(struct intel_encoder
*encoder,
(pll->info->id >= DPLL_ID_DG1_DPLL2 && phy < PHY_C)))
return;
- mutex_lock(&dev_priv->dpll.lock);
-
- intel_de_rmw(dev_priv, DG1_DPCLKA_CFGCR0(phy),
- DG1_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy),
- DG1_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy));
-
- intel_de_rmw(dev_priv, DG1_DPCLKA_CFGCR0(phy),
- DG1_DPCLKA_CFGCR0_DDI_CLK_OFF(phy), 0);
-
- mutex_unlock(&dev_priv->dpll.lock);
+ _cnl_ddi_enable_clock(dev_priv, DG1_DPCLKA_CFGCR0(phy),
+ DG1_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy),
+ DG1_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy),
+ DG1_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
}
static void dg1_ddi_disable_clock(struct intel_encoder *encoder)
@@ -1633,19 +1653,15 @@ static void dg1_ddi_disable_clock(struct intel_encoder
*encoder)
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
- mutex_lock(&dev_priv->dpll.lock);
-
- intel_de_rmw(dev_priv, DG1_DPCLKA_CFGCR0(phy),
- 0, DG1_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
-
- mutex_unlock(&dev_priv->dpll.lock);
+ _cnl_ddi_disable_clock(dev_priv, DG1_DPCLKA_CFGCR0(phy),
+ DG1_DPCLKA_CFGCR0_DDI_CLK_OFF(phy));
}
static void icl_ddi_combo_enable_clock(struct intel_encoder *encoder,
const struct intel_crtc_state
*crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
- struct intel_shared_dpll *pll = crtc_state->shared_dpll;
+ const struct intel_shared_dpll *pll = crtc_state->shared_dpll;
enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
u32 mask, sel;
i915_reg_t reg;
@@ -1667,24 +1683,8 @@ static void icl_ddi_combo_enable_clock(struct
intel_encoder *encoder,
if (drm_WARN_ON(&dev_priv->drm, !pll))
return;
- mutex_lock(&dev_priv->dpll.lock);
-
- /*
- * Even though this register references DDIs, note that we
- * want to pass the PHY rather than the port (DDI). For
- * ICL, port=phy in all cases so it doesn't matter, but for
- * EHL the bspec notes the following:
- *
- * "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."
- */
- intel_de_rmw(dev_priv, reg, mask, sel);
-
- intel_de_rmw(dev_priv, reg,
- icl_dpclka_cfgcr0_clk_off(dev_priv, phy), 0);
-
- mutex_unlock(&dev_priv->dpll.lock);
+ _cnl_ddi_enable_clock(dev_priv, reg, mask, sel,
+ icl_dpclka_cfgcr0_clk_off(dev_priv, phy));
}
static void icl_ddi_combo_disable_clock(struct intel_encoder *encoder)
@@ -1693,19 +1693,13 @@ static void icl_ddi_combo_disable_clock(struct
intel_encoder *encoder)
enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
i915_reg_t reg;
- mutex_lock(&dev_priv->dpll.lock);
-
if (IS_ALDERLAKE_S(dev_priv))
reg = ADLS_DPCLKA_CFGCR(phy);
else
reg = ICL_DPCLKA_CFGCR0;
- mutex_lock(&dev_priv->dpll.lock);
-
- intel_de_rmw(dev_priv, reg,
- 0, icl_dpclka_cfgcr0_clk_off(dev_priv, phy));
-
- mutex_unlock(&dev_priv->dpll.lock);
+ _cnl_ddi_disable_clock(dev_priv, reg,
+ icl_dpclka_cfgcr0_clk_off(dev_priv, phy));
}
static void dg1_sanitize_port_clk_off(struct drm_i915_private *dev_priv,
@@ -1912,20 +1906,10 @@ static void cnl_ddi_enable_clock(struct intel_encoder
*encoder,
if (drm_WARN_ON(&i915->drm, !pll))
return;
- mutex_lock(&i915->dpll.lock);
-
- intel_de_rmw(i915, DPCLKA_CFGCR0,
- DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(port),
- DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, port));
-
- /*
- * "This step and the step before must be
- * done with separate register writes."
- */
- intel_de_rmw(i915, DPCLKA_CFGCR0,
- DPCLKA_CFGCR0_DDI_CLK_OFF(port), 0);
-
- mutex_unlock(&i915->dpll.lock);
+ _cnl_ddi_enable_clock(i915, DPCLKA_CFGCR0,
+ DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(port),
+ DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, port),
+ DPCLKA_CFGCR0_DDI_CLK_OFF(port));
}
static void cnl_ddi_disable_clock(struct intel_encoder *encoder)
@@ -1933,12 +1917,8 @@ static void cnl_ddi_disable_clock(struct intel_encoder
*encoder)
struct drm_i915_private *i915 = to_i915(encoder->base.dev);
enum port port = encoder->port;
- mutex_lock(&i915->dpll.lock);
-
- intel_de_rmw(i915, DPCLKA_CFGCR0,
- 0, DPCLKA_CFGCR0_DDI_CLK_OFF(port));
-
- mutex_unlock(&i915->dpll.lock);
+ _cnl_ddi_disable_clock(i915, DPCLKA_CFGCR0,
+ DPCLKA_CFGCR0_DDI_CLK_OFF(port));
}
static void skl_ddi_enable_clock(struct intel_encoder *encoder,
--
2.26.2
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