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drm/i915: Add sprite watermark programming for VLV and CHV 

Program DDL register as part of sprite watermark programming for CHV and VLV.

v2: Rename DRAIN_LATENCY_MAX by DRAIN_LATENCY_MASK

v3: Addressed review comments by Ville
    - Changed Sprite DDL definitions to more generic to avoid multiple if-else
    - Changed bit masking to customary form
    - Changed to bitwise shorthand operator for sprite_dl assignment

Signed-off-by: Gajanan Bhat <gajanan.bhat@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Gajanan Bhat 2014-08-07 17:03:30 +05:30 committed by Daniel Vetter
parent a398e9c79e
commit 01e184cc85
2 changed files with 36 additions and 6 deletions
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9
drivers/gpu/drm/i915/i915_reg.h
View File

@ -4000,12 +4000,9 @@ enum punit_power_well {
#define DDL_CURSOR_PRECISION_64 (1<<31)
#define DDL_CURSOR_PRECISION_32 (0<<31)
#define DDL_CURSOR_SHIFT 24
#define DDL_SPRITE1_PRECISION_64 (1<<23)
#define DDL_SPRITE1_PRECISION_32 (0<<23)
#define DDL_SPRITE1_SHIFT 16
#define DDL_SPRITE0_PRECISION_64 (1<<15)
#define DDL_SPRITE0_PRECISION_32 (0<<15)
#define DDL_SPRITE0_SHIFT 8
#define DDL_SPRITE_PRECISION_64(sprite) (1<<(15+8*(sprite)))
#define DDL_SPRITE_PRECISION_32(sprite) (0<<(15+8*(sprite)))
#define DDL_SPRITE_SHIFT(sprite) (8+8*(sprite))
#define DDL_PLANE_PRECISION_64 (1<<7)
#define DDL_PLANE_PRECISION_32 (0<<7)
#define DDL_PLANE_SHIFT 0

33
drivers/gpu/drm/i915/intel_pm.c
View File

@ -1494,6 +1494,37 @@ static void cherryview_update_wm(struct drm_crtc *crtc)
intel_set_memory_cxsr(dev_priv, true);
}
static void valleyview_update_sprite_wm(struct drm_plane *plane,
struct drm_crtc *crtc,
uint32_t sprite_width,
uint32_t sprite_height,
int pixel_size,
bool enabled, bool scaled)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
int pipe = to_intel_plane(plane)->pipe;
int sprite = to_intel_plane(plane)->plane;
int drain_latency;
int plane_prec;
int sprite_dl;
int prec_mult;
sprite_dl = I915_READ(VLV_DDL(pipe)) & ~(DDL_SPRITE_PRECISION_64(sprite) |
(DRAIN_LATENCY_MASK << DDL_SPRITE_SHIFT(sprite)));
if (enabled && vlv_compute_drain_latency(crtc, pixel_size, &prec_mult,
&drain_latency)) {
plane_prec = (prec_mult == DRAIN_LATENCY_PRECISION_64) ?
DDL_SPRITE_PRECISION_64(sprite) :
DDL_SPRITE_PRECISION_32(sprite);
sprite_dl |= plane_prec |
(drain_latency << DDL_SPRITE_SHIFT(sprite));
}
I915_WRITE(VLV_DDL(pipe), sprite_dl);
}
static void g4x_update_wm(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
@ -7225,10 +7256,12 @@ void intel_init_pm(struct drm_device *dev)
dev_priv->display.init_clock_gating = gen8_init_clock_gating;
} else if (IS_CHERRYVIEW(dev)) {
dev_priv->display.update_wm = cherryview_update_wm;
dev_priv->display.update_sprite_wm = valleyview_update_sprite_wm;
dev_priv->display.init_clock_gating =
cherryview_init_clock_gating;
} else if (IS_VALLEYVIEW(dev)) {
dev_priv->display.update_wm = valleyview_update_wm;
dev_priv->display.update_sprite_wm = valleyview_update_sprite_wm;
dev_priv->display.init_clock_gating =
valleyview_init_clock_gating;
} else if (IS_PINEVIEW(dev)) {