On Wed, 2014-07-16 at 18:24 +0530, Gajanan Bhat wrote:
> Program DDL register as part sprite watermark programming for CHV and VLV.
>
> Signed-off-by: Gajanan Bhat <gajanan.bhat@xxxxxxxxx>
This looks ok, but could you confirm, ideally referencing some document,
that we don't need to program any of the sprite watermark level
registers along with the DDL values? Specifically I mean the FW7, FW8
registers.
--Imre
> ---
> drivers/gpu/drm/i915/intel_pm.c | 44 +++++++++++++++++++++++++++++++++++++++
> 1 file changed, 44 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index f3a3e90..0f439f7 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -1405,6 +1405,48 @@ static void valleyview_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 drain_latency;
> + int plane_prec;
> + int sprite_dl;
> + int prec_mult;
> +
> + if (to_intel_plane(plane)->plane == 0)
> + sprite_dl = I915_READ(VLV_DDL(pipe)) & ~DDL_SPRITE0_PRECISION_64 &
> + ~(DRAIN_LATENCY_MAX << DDL_SPRITE0_SHIFT);
> + else
> + sprite_dl = I915_READ(VLV_DDL(pipe)) & ~DDL_SPRITE1_PRECISION_64 &
> + ~(DRAIN_LATENCY_MAX << DDL_SPRITE1_SHIFT);
> +
> + if (enabled && vlv_compute_drain_latency(crtc, pixel_size, &prec_mult,
> + &drain_latency)) {
> + if (to_intel_plane(plane)->plane == 0) {
> + plane_prec = (prec_mult == DRAIN_LATENCY_PRECISION_64) ?
> + DDL_SPRITE0_PRECISION_64 :
> + DDL_SPRITE0_PRECISION_32;
> + sprite_dl = sprite_dl | plane_prec |
> + drain_latency << DDL_SPRITE0_SHIFT;
> + } else {
> + plane_prec = (prec_mult == DRAIN_LATENCY_PRECISION_64) ?
> + DDL_SPRITE1_PRECISION_64 :
> + DDL_SPRITE1_PRECISION_32;
> + sprite_dl = sprite_dl | plane_prec |
> + drain_latency << DDL_SPRITE1_SHIFT;
> + }
> + }
> +
> + I915_WRITE(VLV_DDL(pipe), sprite_dl);
> +}
> +
> static void g4x_update_wm(struct drm_crtc *crtc)
> {
> struct drm_device *dev = crtc->dev;
> @@ -6851,10 +6893,12 @@ 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 = valleyview_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)) {
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