drm/i915: add initial Runtime PM functions
[deliverable/linux.git] / drivers / gpu / drm / i915 / intel_pm.c
index eac7c4eb345cbf543d4024c9defd06091654efa7..2590a5c90725253edbeb012ff1d83bc2f9f2ef12 100644 (file)
@@ -31,6 +31,7 @@
 #include "../../../platform/x86/intel_ips.h"
 #include <linux/module.h>
 #include <drm/i915_powerwell.h>
+#include <linux/pm_runtime.h>
 
 /**
  * RC6 is a special power stage which allows the GPU to enter an very
@@ -537,10 +538,10 @@ void intel_update_fbc(struct drm_device *dev)
                        DRM_DEBUG_KMS("mode too large for compression, disabling\n");
                goto out_disable;
        }
-       if ((IS_I915GM(dev) || IS_I945GM(dev) || IS_HASWELL(dev)) &&
-           intel_crtc->plane != 0) {
+       if ((INTEL_INFO(dev)->gen < 4 || IS_HASWELL(dev)) &&
+           intel_crtc->plane != PLANE_A) {
                if (set_no_fbc_reason(dev_priv, FBC_BAD_PLANE))
-                       DRM_DEBUG_KMS("plane not 0, disabling compression\n");
+                       DRM_DEBUG_KMS("plane not A, disabling compression\n");
                goto out_disable;
        }
 
@@ -1632,7 +1633,7 @@ static void i9xx_update_wm(struct drm_crtc *unused_crtc)
                        &to_intel_crtc(enabled)->config.adjusted_mode;
                int clock = adjusted_mode->crtc_clock;
                int htotal = adjusted_mode->htotal;
-               int hdisplay = to_intel_crtc(crtc)->config.pipe_src_w;
+               int hdisplay = to_intel_crtc(enabled)->config.pipe_src_w;
                int pixel_size = enabled->fb->bits_per_pixel / 8;
                unsigned long line_time_us;
                int entries;
@@ -3858,7 +3859,7 @@ static void gen6_enable_rps(struct drm_device *dev)
 
        I915_WRITE(GEN6_RC_SLEEP, 0);
        I915_WRITE(GEN6_RC1e_THRESHOLD, 1000);
-       if (INTEL_INFO(dev)->gen <= 6 || IS_IVYBRIDGE(dev))
+       if (IS_IVYBRIDGE(dev))
                I915_WRITE(GEN6_RC6_THRESHOLD, 125000);
        else
                I915_WRITE(GEN6_RC6_THRESHOLD, 50000);
@@ -5641,6 +5642,17 @@ static bool hsw_power_well_enabled(struct drm_device *dev,
                     (HSW_PWR_WELL_ENABLE_REQUEST | HSW_PWR_WELL_STATE_ENABLED);
 }
 
+bool intel_display_power_enabled_sw(struct drm_device *dev,
+                                   enum intel_display_power_domain domain)
+{
+       struct drm_i915_private *dev_priv = dev->dev_private;
+       struct i915_power_domains *power_domains;
+
+       power_domains = &dev_priv->power_domains;
+
+       return power_domains->domain_use_count[domain];
+}
+
 bool intel_display_power_enabled(struct drm_device *dev,
                                 enum intel_display_power_domain domain)
 {
@@ -5677,6 +5689,8 @@ static void hsw_set_power_well(struct drm_device *dev,
        unsigned long irqflags;
        uint32_t tmp;
 
+       WARN_ON(dev_priv->pc8.enabled);
+
        tmp = I915_READ(HSW_PWR_WELL_DRIVER);
        is_enabled = tmp & HSW_PWR_WELL_STATE_ENABLED;
        enable_requested = tmp & HSW_PWR_WELL_ENABLE_REQUEST;
@@ -5736,17 +5750,26 @@ static void hsw_set_power_well(struct drm_device *dev,
 static void __intel_power_well_get(struct drm_device *dev,
                                   struct i915_power_well *power_well)
 {
-       if (!power_well->count++ && power_well->set)
+       struct drm_i915_private *dev_priv = dev->dev_private;
+
+       if (!power_well->count++ && power_well->set) {
+               hsw_disable_package_c8(dev_priv);
                power_well->set(dev, power_well, true);
+       }
 }
 
 static void __intel_power_well_put(struct drm_device *dev,
                                   struct i915_power_well *power_well)
 {
+       struct drm_i915_private *dev_priv = dev->dev_private;
+
        WARN_ON(!power_well->count);
 
-       if (!--power_well->count && power_well->set && i915_disable_power_well)
+       if (!--power_well->count && power_well->set &&
+           i915_disable_power_well) {
                power_well->set(dev, power_well, false);
+               hsw_enable_package_c8(dev_priv);
+       }
 }
 
 void intel_display_power_get(struct drm_device *dev,
@@ -5761,12 +5784,11 @@ void intel_display_power_get(struct drm_device *dev,
 
        mutex_lock(&power_domains->lock);
 
-#if IS_ENABLED(CONFIG_DEBUG_FS)
-       power_domains->domain_use_count[domain]++;
-#endif
        for_each_power_well(i, power_well, BIT(domain), power_domains)
                __intel_power_well_get(dev, power_well);
 
+       power_domains->domain_use_count[domain]++;
+
        mutex_unlock(&power_domains->lock);
 }
 
@@ -5782,13 +5804,11 @@ void intel_display_power_put(struct drm_device *dev,
 
        mutex_lock(&power_domains->lock);
 
-       for_each_power_well_rev(i, power_well, BIT(domain), power_domains)
-               __intel_power_well_put(dev, power_well);
-
-#if IS_ENABLED(CONFIG_DEBUG_FS)
        WARN_ON(!power_domains->domain_use_count[domain]);
        power_domains->domain_use_count[domain]--;
-#endif
+
+       for_each_power_well_rev(i, power_well, BIT(domain), power_domains)
+               __intel_power_well_put(dev, power_well);
 
        mutex_unlock(&power_domains->lock);
 }
@@ -5942,31 +5962,83 @@ void intel_aux_display_runtime_put(struct drm_i915_private *dev_priv)
        hsw_enable_package_c8(dev_priv);
 }
 
+void intel_runtime_pm_get(struct drm_i915_private *dev_priv)
+{
+       struct drm_device *dev = dev_priv->dev;
+       struct device *device = &dev->pdev->dev;
+
+       if (!HAS_RUNTIME_PM(dev))
+               return;
+
+       pm_runtime_get_sync(device);
+       WARN(dev_priv->pm.suspended, "Device still suspended.\n");
+}
+
+void intel_runtime_pm_put(struct drm_i915_private *dev_priv)
+{
+       struct drm_device *dev = dev_priv->dev;
+       struct device *device = &dev->pdev->dev;
+
+       if (!HAS_RUNTIME_PM(dev))
+               return;
+
+       pm_runtime_mark_last_busy(device);
+       pm_runtime_put_autosuspend(device);
+}
+
+void intel_init_runtime_pm(struct drm_i915_private *dev_priv)
+{
+       struct drm_device *dev = dev_priv->dev;
+       struct device *device = &dev->pdev->dev;
+
+       dev_priv->pm.suspended = false;
+
+       if (!HAS_RUNTIME_PM(dev))
+               return;
+
+       pm_runtime_set_active(device);
+
+       pm_runtime_set_autosuspend_delay(device, 10000); /* 10s */
+       pm_runtime_mark_last_busy(device);
+       pm_runtime_use_autosuspend(device);
+}
+
+void intel_fini_runtime_pm(struct drm_i915_private *dev_priv)
+{
+       struct drm_device *dev = dev_priv->dev;
+       struct device *device = &dev->pdev->dev;
+
+       if (!HAS_RUNTIME_PM(dev))
+               return;
+
+       /* Make sure we're not suspended first. */
+       pm_runtime_get_sync(device);
+       pm_runtime_disable(device);
+}
+
 /* Set up chip specific power management-related functions */
 void intel_init_pm(struct drm_device *dev)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
 
        if (I915_HAS_FBC(dev)) {
-               if (HAS_PCH_SPLIT(dev)) {
+               if (INTEL_INFO(dev)->gen >= 7) {
                        dev_priv->display.fbc_enabled = ironlake_fbc_enabled;
-                       if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev))
-                               dev_priv->display.enable_fbc =
-                                       gen7_enable_fbc;
-                       else
-                               dev_priv->display.enable_fbc =
-                                       ironlake_enable_fbc;
+                       dev_priv->display.enable_fbc = gen7_enable_fbc;
+                       dev_priv->display.disable_fbc = ironlake_disable_fbc;
+               } else if (INTEL_INFO(dev)->gen >= 5) {
+                       dev_priv->display.fbc_enabled = ironlake_fbc_enabled;
+                       dev_priv->display.enable_fbc = ironlake_enable_fbc;
                        dev_priv->display.disable_fbc = ironlake_disable_fbc;
                } else if (IS_GM45(dev)) {
                        dev_priv->display.fbc_enabled = g4x_fbc_enabled;
                        dev_priv->display.enable_fbc = g4x_enable_fbc;
                        dev_priv->display.disable_fbc = g4x_disable_fbc;
-               } else if (IS_CRESTLINE(dev)) {
+               } else {
                        dev_priv->display.fbc_enabled = i8xx_fbc_enabled;
                        dev_priv->display.enable_fbc = i8xx_enable_fbc;
                        dev_priv->display.disable_fbc = i8xx_disable_fbc;
                }
-               /* 855GM needs testing */
        }
 
        /* For cxsr */
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