From: Paulo Zanoni <paulo.r.zan...@intel.com>

It was just being used on debugfs and on a WARN inside
hsw_set_power_well. But now that we PC8 is part of runtime PM and we
get/put runtime PM when we get/put any power domain, we shouldn't need
the WARN anymore.

v2: - Rebase.

Signed-off-by: Paulo Zanoni <paulo.r.zan...@intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c  | 1 -
 drivers/gpu/drm/i915/i915_drv.h      | 2 --
 drivers/gpu/drm/i915/intel_display.c | 3 ---
 drivers/gpu/drm/i915/intel_pm.c      | 3 ---
 4 files changed, 9 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c 
b/drivers/gpu/drm/i915/i915_debugfs.c
index ad6c209..93d6065 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2000,7 +2000,6 @@ static int i915_pc8_status(struct seq_file *m, void 
*unused)
        seq_printf(m, "GPU idle: %s\n", yesno(!dev_priv->mm.busy));
        seq_printf(m, "IRQs disabled: %s\n",
                   yesno(dev_priv->pc8.irqs_disabled));
-       seq_printf(m, "Enabled: %s\n", yesno(dev_priv->pc8.enabled));
        mutex_unlock(&dev_priv->pc8.lock);
 
        return 0;
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 8b66c14..16e344e 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1351,8 +1351,6 @@ struct ilk_wm_values {
  */
 struct i915_package_c8 {
        bool irqs_disabled;
-       /* Only true after the delayed work task actually enables it. */
-       bool enabled;
        struct mutex lock;
 
        struct {
diff --git a/drivers/gpu/drm/i915/intel_display.c 
b/drivers/gpu/drm/i915/intel_display.c
index d9ea9b89..271dd66 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6660,8 +6660,6 @@ void __hsw_do_enable_pc8(struct drm_i915_private 
*dev_priv)
 
        DRM_DEBUG_KMS("Enabling package C8+\n");
 
-       dev_priv->pc8.enabled = true;
-
        if (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) {
                val = I915_READ(SOUTH_DSPCLK_GATE_D);
                val &= ~PCH_LP_PARTITION_LEVEL_DISABLE;
@@ -6697,7 +6695,6 @@ void __hsw_do_disable_pc8(struct drm_i915_private 
*dev_priv)
        mutex_lock(&dev_priv->rps.hw_lock);
        gen6_update_ring_freq(dev);
        mutex_unlock(&dev_priv->rps.hw_lock);
-       dev_priv->pc8.enabled = false;
 }
 
 #define for_each_power_domain(domain, mask)                            \
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 78f56e8..c85507a 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -5278,8 +5278,6 @@ static void hsw_set_power_well(struct drm_device *dev,
        bool is_enabled, enable_requested;
        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;
@@ -5773,7 +5771,6 @@ void intel_pm_setup(struct drm_device *dev)
 
        mutex_init(&dev_priv->pc8.lock);
        dev_priv->pc8.irqs_disabled = false;
-       dev_priv->pc8.enabled = false;
        INIT_DELAYED_WORK(&dev_priv->rps.delayed_resume_work,
                          intel_gen6_powersave_work);
 }
-- 
1.8.5.3

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