[PATCH] drm/i915: Add haswell_pcode_write function

[Tom.O'Rourke@xxxxxxxxx]

From: Tom O'Rourke <Tom.O'Rourke@xxxxxxxxx>

Based on sandybridge_pcode_write, haswell_pcode_write has an
additional field for address control.

Signed-off-by: Tom O'Rourke <Tom.O'Rourke@xxxxxxxxx>
---
 drivers/gpu/drm/i915/i915_drv.h |    1 +
 drivers/gpu/drm/i915/i915_reg.h |    1 +
 drivers/gpu/drm/i915/intel_pm.c |    9 +++++++--
 3 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 0f00e58..fd8b550 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2950,6 +2950,7 @@ void gen6_gt_force_wake_put(struct drm_i915_private *dev_priv, int fw_engine);
 void assert_force_wake_inactive(struct drm_i915_private *dev_priv);
 
 int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u8 mbox, u32 *val);
+int haswell_pcode_write(struct drm_i915_private *dev_priv, u8 mbox, u32 val, u32 control);
 int sandybridge_pcode_write(struct drm_i915_private *dev_priv, u8 mbox, u32 val);
 
 /* intel_sideband.c */
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 6fbfdec..b674050 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -6011,6 +6011,7 @@ enum punit_power_well {
 #define   GEN6_DECODE_RC6_VID(vids)		(((vids) * 5) + 245)
 #define   DISPLAY_IPS_CONTROL			0x19
 #define	  HSW_PCODE_DYNAMIC_DUTY_CYCLE_CONTROL	0x1A
+#define   HSW_PCODE_ADDR_CNTL(cntl)		((cntl << 8) & 0x1fffff00)
 #define GEN6_PCODE_DATA				0x138128
 #define   GEN6_PCODE_FREQ_IA_RATIO_SHIFT	8
 #define   GEN6_PCODE_FREQ_RING_RATIO_SHIFT	16
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 1244ff8..9c47bc8 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -7277,7 +7277,7 @@ int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u8 mbox, u32 *val)
 	return 0;
 }
 
-int sandybridge_pcode_write(struct drm_i915_private *dev_priv, u8 mbox, u32 val)
+int haswell_pcode_write(struct drm_i915_private *dev_priv, u8 mbox, u32 val, u32 control)
 {
 	WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock));
 
@@ -7287,7 +7287,7 @@ int sandybridge_pcode_write(struct drm_i915_private *dev_priv, u8 mbox, u32 val)
 	}
 
 	I915_WRITE(GEN6_PCODE_DATA, val);
-	I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox);
+	I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox | HSW_PCODE_ADDR_CNTL(control));
 
 	if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
 		     500)) {
@@ -7300,6 +7300,11 @@ int sandybridge_pcode_write(struct drm_i915_private *dev_priv, u8 mbox, u32 val)
 	return 0;
 }
 
+int sandybridge_pcode_write(struct drm_i915_private *dev_priv, u8 mbox, u32 val)
+{
+	return haswell_pcode_write(dev_priv, mbox, val, 0);
+}
+
 static int byt_gpu_freq(struct drm_i915_private *dev_priv, int val)
 {
 	int div;
-- 
1.7.9.5

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