Commit 575155a9 authored by Jesse Barnes's avatar Jesse Barnes Committed by Daniel Vetter

drm/i915: add ValleyView specific force wake get/put functions

ValleyView handles force wake differently than previous chipsets, so add
a couple of new functions for it.  But leave it disabled by default
until we test it (need a chip with the Punit enabled first).
Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 64757876
......@@ -465,6 +465,31 @@ int __gen6_gt_wait_for_fifo(struct drm_i915_private *dev_priv)
return ret;
}
void vlv_force_wake_get(struct drm_i915_private *dev_priv)
{
int count;
count = 0;
/* Already awake? */
if ((I915_READ(0x130094) & 0xa1) == 0xa1)
return;
I915_WRITE_NOTRACE(FORCEWAKE_VLV, 0xffffffff);
POSTING_READ(FORCEWAKE_VLV);
count = 0;
while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK_VLV) & 1) == 0)
udelay(10);
}
void vlv_force_wake_put(struct drm_i915_private *dev_priv)
{
I915_WRITE_NOTRACE(FORCEWAKE_VLV, 0xffff0000);
/* FIXME: confirm VLV behavior with Punit folks */
POSTING_READ(FORCEWAKE_VLV);
}
static int i915_drm_freeze(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
......@@ -1007,7 +1032,8 @@ MODULE_LICENSE("GPL and additional rights");
#define NEEDS_FORCE_WAKE(dev_priv, reg) \
(((dev_priv)->info->gen >= 6) && \
((reg) < 0x40000) && \
((reg) != FORCEWAKE))
((reg) != FORCEWAKE)) && \
(!IS_VALLEYVIEW((dev_priv)->dev))
#define __i915_read(x, y) \
u##x i915_read##x(struct drm_i915_private *dev_priv, u32 reg) { \
......
......@@ -1406,6 +1406,9 @@ extern void __gen6_gt_force_wake_mt_get(struct drm_i915_private *dev_priv);
extern void __gen6_gt_force_wake_put(struct drm_i915_private *dev_priv);
extern void __gen6_gt_force_wake_mt_put(struct drm_i915_private *dev_priv);
extern void vlv_force_wake_get(struct drm_i915_private *dev_priv);
extern void vlv_force_wake_put(struct drm_i915_private *dev_priv);
/* overlay */
#ifdef CONFIG_DEBUG_FS
extern struct intel_overlay_error_state *intel_overlay_capture_error_state(struct drm_device *dev);
......
......@@ -3820,6 +3820,8 @@
#define EDP_LINK_TRAIN_VOL_EMP_MASK_IVB (0x3f<<22)
#define FORCEWAKE 0xA18C
#define FORCEWAKE_VLV 0x1300b0
#define FORCEWAKE_ACK_VLV 0x1300b4
#define FORCEWAKE_ACK 0x130090
#define FORCEWAKE_MT 0xa188 /* multi-threaded */
#define FORCEWAKE_MT_ACK 0x130040
......
......@@ -9277,6 +9277,8 @@ static void intel_init_display(struct drm_device *dev)
dev_priv->display.update_wm = valleyview_update_wm;
dev_priv->display.init_clock_gating =
valleyview_init_clock_gating;
dev_priv->display.force_wake_get = vlv_force_wake_get;
dev_priv->display.force_wake_put = vlv_force_wake_put;
} else if (IS_PINEVIEW(dev)) {
if (!intel_get_cxsr_latency(IS_PINEVIEW_G(dev),
dev_priv->is_ddr3,
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment