[PATCH 11/18] drm/i915: Move VLV divider readout to intel_dpio_phy.c

Ander Conselvan de Oliveira ander.conselvan.de.oliveira at intel.com
Mon May 2 11:47:35 UTC 2016


Reading the dividers depends on sideband messaging, so it fits well if
the other functions in intel_dpio_phy.c. The new function will also be
used in a future patch.
---
 drivers/gpu/drm/i915/i915_drv.h       |  2 ++
 drivers/gpu/drm/i915/intel_display.c  | 11 +----------
 drivers/gpu/drm/i915/intel_dpio_phy.c | 16 ++++++++++++++++
 3 files changed, 19 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index f1801c4..5eab5af 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -3614,6 +3614,8 @@ void vlv_phy_reset_lanes(struct intel_encoder *encoder);
 void vlv_phy_prepare_pll(struct intel_crtc *crtc, u32 bestn,
 			 u32 bestm1, u32 bestm2, u32 bestp1, u32 bestp2,
 			 u32 lpf, bool use_ssc_source);
+void vlv_phy_read_dividers(struct drm_i915_private *dev_priv,
+			   enum pipe pipe, struct dpll *clock);
 
 int intel_gpu_freq(struct drm_i915_private *dev_priv, int val);
 int intel_freq_opcode(struct drm_i915_private *dev_priv, int val);
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index d237863..5b14a00 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -7835,22 +7835,13 @@ static void vlv_crtc_clock_get(struct intel_crtc *crtc,
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	int pipe = pipe_config->cpu_transcoder;
 	struct dpll clock;
-	u32 mdiv;
 	int refclk = 100000;
 
 	/* In case of DSI, DPLL will not be used */
 	if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
 		return;
 
-	mutex_lock(&dev_priv->sb_lock);
-	mdiv = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW3(pipe));
-	mutex_unlock(&dev_priv->sb_lock);
-
-	clock.m1 = (mdiv >> DPIO_M1DIV_SHIFT) & 7;
-	clock.m2 = mdiv & DPIO_M2DIV_MASK;
-	clock.n = (mdiv >> DPIO_N_SHIFT) & 0xf;
-	clock.p1 = (mdiv >> DPIO_P1_SHIFT) & 7;
-	clock.p2 = (mdiv >> DPIO_P2_SHIFT) & 0x1f;
+	vlv_phy_read_dividers(dev_priv, pipe, &clock);
 
 	pipe_config->port_clock = vlv_calc_dpll_params(refclk, &clock);
 }
diff --git a/drivers/gpu/drm/i915/intel_dpio_phy.c b/drivers/gpu/drm/i915/intel_dpio_phy.c
index 0c749189..3e53907 100644
--- a/drivers/gpu/drm/i915/intel_dpio_phy.c
+++ b/drivers/gpu/drm/i915/intel_dpio_phy.c
@@ -661,3 +661,19 @@ void vlv_phy_prepare_pll(struct intel_crtc *crtc, u32 bestn,
 	vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW11(pipe), 0x87871000);
 	mutex_unlock(&dev_priv->sb_lock);
 }
+
+void vlv_phy_read_dividers(struct drm_i915_private *dev_priv,
+			   enum pipe pipe, struct dpll *clock)
+{
+	u32 mdiv;
+
+	mutex_lock(&dev_priv->sb_lock);
+	mdiv = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW3(pipe));
+	mutex_unlock(&dev_priv->sb_lock);
+
+	clock->m1 = (mdiv >> DPIO_M1DIV_SHIFT) & 7;
+	clock->m2 = mdiv & DPIO_M2DIV_MASK;
+	clock->n = (mdiv >> DPIO_N_SHIFT) & 0xf;
+	clock->p1 = (mdiv >> DPIO_P1_SHIFT) & 7;
+	clock->p2 = (mdiv >> DPIO_P2_SHIFT) & 0x1f;
+}
-- 
2.4.11



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