drm/i915: Deobfuscate the render p-state obfuscation

The ironlake render p-state support includes some rather odd variable
names. Clean them up in order to improve the readability of the code.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Eric Anholt <eric@anholt.net>

5 files changed, 15 insertions, 13 deletions

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 2e493ec1042b..7df89ae8172f 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -452,7 +452,7 @@ typedef struct drm_i915_private {
         u32 savePIPEB_DATA_N1;
         u32 savePIPEB_LINK_M1;
         u32 savePIPEB_LINK_N1;
-        u32 saveRSTDBYCTL;
+        u32 saveMCHBAR_RENDER_STANDBY;
 
         struct {
                 struct drm_mm gtt_space;
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 8b35f5e1c511..1a56ae7b5a78 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -272,23 +272,23 @@ static void i915_hotplug_work_func(struct work_struct *work)
 static void i915_handle_rps_change(struct drm_device *dev)
 {
         drm_i915_private_t *dev_priv = dev->dev_private;
-        u32 slow_up, slow_down, max_avg, min_avg;
+        u32 busy_up, busy_down, max_avg, min_avg;
         u16 rgvswctl;
         u8 new_delay = dev_priv->cur_delay;
 
         I915_WRITE(MEMINTRSTS, I915_READ(MEMINTRSTS) & ~MEMINT_EVAL_CHG);
-        slow_up = I915_READ(RCPREVBSYTUPAVG);
-        slow_down = I915_READ(RCPREVBSYTDNAVG);
+        busy_up = I915_READ(RCPREVBSYTUPAVG);
+        busy_down = I915_READ(RCPREVBSYTDNAVG);
         max_avg = I915_READ(RCBMAXAVG);
         min_avg = I915_READ(RCBMINAVG);
 
         /* Handle RCS change request from hw */
-        if (slow_up > max_avg) {
+        if (busy_up > max_avg) {
                 if (dev_priv->cur_delay != dev_priv->max_delay)
                         new_delay = dev_priv->cur_delay - 1;
                 if (new_delay < dev_priv->max_delay)
                         new_delay = dev_priv->max_delay;
-        } else if (slow_down < min_avg) {
+        } else if (busy_down < min_avg) {
                 if (dev_priv->cur_delay != dev_priv->min_delay)
                         new_delay = dev_priv->cur_delay + 1;
                 if (new_delay > dev_priv->min_delay)
@@ -300,8 +300,8 @@ static void i915_handle_rps_change(struct drm_device *dev)
 
         rgvswctl = I915_READ(MEMSWCTL);
         if (rgvswctl & MEMCTL_CMD_STS) {
-                DRM_ERROR("gpu slow, RCS change rejected\n");
-                return; /* still slow with another command */
+                DRM_ERROR("gpu busy, RCS change rejected\n");
+                return; /* still busy with another command */
         }
 
         /* Program the new state */
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index c3948ee37c13..d344c031f188 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -907,7 +907,7 @@
 #define RCBMINAVG               0x111a0
 #define RCUPEI                  0x111b0
 #define RCDNEI                  0x111b4
-#define RSTDBYCTL               0x111b8
+#define MCHBAR_RENDER_STANDBY           0x111b8
 #define   RCX_SW_EXIT           (1<<23)
 #define   RSX_STATUS_MASK       0x00700000
 #define VIDCTL                  0x111c0
diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
index 2c346645acfa..ac0d1a73ac22 100644
--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -682,7 +682,8 @@ void i915_restore_display(struct drm_device *dev)
                 I915_WRITE(PCH_PP_OFF_DELAYS, dev_priv->savePP_OFF_DELAYS);
                 I915_WRITE(PCH_PP_DIVISOR, dev_priv->savePP_DIVISOR);
                 I915_WRITE(PCH_PP_CONTROL, dev_priv->savePP_CONTROL);
-                I915_WRITE(RSTDBYCTL, dev_priv->saveRSTDBYCTL);
+                I915_WRITE(MCHBAR_RENDER_STANDBY,
+                           dev_priv->saveMCHBAR_RENDER_STANDBY);
         } else {
                 I915_WRITE(PFIT_PGM_RATIOS, dev_priv->savePFIT_PGM_RATIOS);
                 I915_WRITE(BLC_PWM_CTL, dev_priv->saveBLC_PWM_CTL);
@@ -746,7 +747,8 @@ int i915_save_state(struct drm_device *dev)
                 dev_priv->saveGTIMR = I915_READ(GTIMR);
                 dev_priv->saveFDI_RXA_IMR = I915_READ(FDI_RXA_IMR);
                 dev_priv->saveFDI_RXB_IMR = I915_READ(FDI_RXB_IMR);
-                dev_priv->saveRSTDBYCTL = I915_READ(RSTDBYCTL);
+                dev_priv->saveMCHBAR_RENDER_STANDBY =
+                        I915_READ(MCHBAR_RENDER_STANDBY);
         } else {
                 dev_priv->saveIER = I915_READ(IER);
                 dev_priv->saveIMR = I915_READ(IMR);
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 4a93f7a0f58d..9e80020ae2fe 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4770,8 +4770,8 @@ void intel_init_clock_gating(struct drm_device *dev)
 
                 if (obj_priv) {
                         I915_WRITE(PWRCTXA, obj_priv->gtt_offset | PWRCTX_EN);
-                        I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) &
-                                   ~RCX_SW_EXIT);
+                        I915_WRITE(MCHBAR_RENDER_STANDBY,
+                                   I915_READ(MCHBAR_RENDER_STANDBY) & ~RCX_SW_EXIT);
                 }
         }
 }