[Intel-gfx] [PATCH 13/14] drm/i915: skylake primary plane scaling using shared scalers
Matt Roper
matthew.d.roper at intel.com
Thu Apr 9 14:51:31 PDT 2015
On Tue, Apr 07, 2015 at 03:28:46PM -0700, Chandra Konduru wrote:
> This patch enables skylake primary plane scaling using shared
> scalers atomic desgin.
>
> v2:
> -use single copy of scaler limits (Matt)
>
> v3:
> -move detach_scalers to crtc commit path (Matt)
> -use values in plane_state->src as regular integers (me)
>
> v4:
> -changes to align with updated scaler structures (Matt, me)
> -keep plane src rect in 16.16 format (Matt, Daniel)
See comments on patch #6 that relate to this. If you want to take the
approach here (perform the unshift in skl_update_plane) then you also
need to do the same for all other platforms (ivb, ilk, vlv, etc.). But
my suggestion on the other patch (do the unshifting in commit_plane and
leave skl_update_plane alone) might be a bit simpler.
Matt
>
> Signed-off-by: Chandra Konduru <chandra.konduru at intel.com>
> ---
> drivers/gpu/drm/i915/intel_atomic.c | 5 +-
> drivers/gpu/drm/i915/intel_display.c | 96 ++++++++++++++++++++++++++++++++--
> drivers/gpu/drm/i915/intel_drv.h | 1 +
> drivers/gpu/drm/i915/intel_sprite.c | 9 ++++
> 4 files changed, 105 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_atomic.c b/drivers/gpu/drm/i915/intel_atomic.c
> index 2fc04ec..8f759c6 100644
> --- a/drivers/gpu/drm/i915/intel_atomic.c
> +++ b/drivers/gpu/drm/i915/intel_atomic.c
> @@ -167,7 +167,7 @@ int intel_atomic_commit(struct drm_device *dev,
> plane->state->state = NULL;
> }
>
> - /* swap crtc_state */
> + /* swap crtc_scaler_state */
> for (i = 0; i < dev->mode_config.num_crtc; i++) {
> struct drm_crtc *crtc = state->crtcs[i];
> if (!crtc) {
> @@ -176,6 +176,9 @@ int intel_atomic_commit(struct drm_device *dev,
>
> to_intel_crtc(crtc)->config->scaler_state =
> to_intel_crtc_state(state->crtc_states[i])->scaler_state;
> +
> + if (INTEL_INFO(dev)->gen >= 9)
> + skl_detach_scalers(to_intel_crtc(crtc));
> }
>
> drm_atomic_helper_commit_planes(dev, state);
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index aa4da1f..c7ee232 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -2978,6 +2978,14 @@ static void skylake_update_primary_plane(struct drm_crtc *crtc,
> int pipe = intel_crtc->pipe;
> u32 plane_ctl, stride_div;
> unsigned long surf_addr;
> + struct intel_crtc_state *crtc_state = intel_crtc->config;
> + struct intel_plane_state *plane_state;
> + int src_x = 0, src_y = 0, src_w = 0, src_h = 0;
> + int dst_x = 0, dst_y = 0, dst_w = 0, dst_h = 0;
> + int scaler_id = -1;
> +
> + plane_state = crtc->primary ?
> + to_intel_plane_state(crtc->primary->state) : NULL;
>
> if (!intel_crtc->primary_enabled) {
> I915_WRITE(PLANE_CTL(pipe, 0), 0);
> @@ -3046,12 +3054,40 @@ static void skylake_update_primary_plane(struct drm_crtc *crtc,
> fb->pixel_format);
> surf_addr = intel_plane_obj_offset(to_intel_plane(crtc->primary), obj);
>
> + if (plane_state) {
> + scaler_id = plane_state->scaler_id;
> + src_x = plane_state->src.x1 >> 16;
> + src_y = plane_state->src.y1 >> 16;
> + src_w = drm_rect_width(&plane_state->src) >> 16;
> + src_h = drm_rect_height(&plane_state->src) >> 16;
> + dst_x = plane_state->dst.x1;
> + dst_y = plane_state->dst.y1;
> + dst_w = drm_rect_width(&plane_state->dst);
> + dst_h = drm_rect_height(&plane_state->dst);
> + }
> +
> I915_WRITE(PLANE_CTL(pipe, 0), plane_ctl);
> I915_WRITE(PLANE_POS(pipe, 0), 0);
> +
> + if (src_w && src_h && dst_w && dst_h && scaler_id >= 0) {
> + uint32_t ps_ctrl = 0;
> +
> + WARN_ON(x != src_x || y != src_y);
> + ps_ctrl = PS_SCALER_EN | PS_PLANE_SEL(0) |
> + crtc_state->scaler_state.scalers[scaler_id].mode;
> + I915_WRITE(SKL_PS_CTRL(pipe, scaler_id), ps_ctrl);
> + I915_WRITE(SKL_PS_PWR_GATE(pipe, scaler_id), 0);
> + I915_WRITE(SKL_PS_WIN_POS(pipe, scaler_id), (dst_x << 16) | dst_y);
> + I915_WRITE(SKL_PS_WIN_SZ(pipe, scaler_id), (dst_w << 16) | dst_h);
> +
> + I915_WRITE(PLANE_SIZE(pipe, 0), ((src_h - 1) << 16) | (src_w - 1));
> + } else {
> + I915_WRITE(PLANE_SIZE(pipe, 0),
> + (intel_crtc->config->pipe_src_h - 1) << 16 |
> + (intel_crtc->config->pipe_src_w - 1));
> + }
> +
> I915_WRITE(PLANE_OFFSET(pipe, 0), (y << 16) | x);
> - I915_WRITE(PLANE_SIZE(pipe, 0),
> - (intel_crtc->config->pipe_src_h - 1) << 16 |
> - (intel_crtc->config->pipe_src_w - 1));
> I915_WRITE(PLANE_STRIDE(pipe, 0), fb->pitches[0] / stride_div);
> I915_WRITE(PLANE_SURF(pipe, 0), surf_addr);
>
> @@ -12778,6 +12814,36 @@ intel_cleanup_plane_fb(struct drm_plane *plane,
> }
> }
>
> +int
> +skl_max_scale(struct intel_crtc *intel_crtc, struct intel_crtc_state *crtc_state)
> +{
> + int max_scale;
> + struct drm_device *dev;
> + struct drm_i915_private *dev_priv;
> + int crtc_clock, cdclk;
> +
> + if (!intel_crtc || !crtc_state)
> + return DRM_PLANE_HELPER_NO_SCALING;
> +
> + dev = intel_crtc->base.dev;
> + dev_priv = dev->dev_private;
> + crtc_clock = crtc_state->base.adjusted_mode.crtc_clock;
> + cdclk = dev_priv->display.get_display_clock_speed(dev);
> +
> + if (!crtc_clock || !cdclk)
> + return DRM_PLANE_HELPER_NO_SCALING;
> +
> + /*
> + * skl max scale is lower of:
> + * close to 3 but not 3, -1 is for that purpose
> + * or
> + * cdclk/crtc_clock
> + */
> + max_scale = min((1 << 16) * 3 - 1, (1 << 8) * ((cdclk << 8) / crtc_clock));
> +
> + return max_scale;
> +}
> +
> static int
> intel_check_primary_plane(struct drm_plane *plane,
> struct intel_plane_state *state)
> @@ -12786,19 +12852,29 @@ intel_check_primary_plane(struct drm_plane *plane,
> struct drm_i915_private *dev_priv = dev->dev_private;
> struct drm_crtc *crtc = state->base.crtc;
> struct intel_crtc *intel_crtc;
> + struct intel_crtc_state *crtc_state;
> struct drm_framebuffer *fb = state->base.fb;
> struct drm_rect *dest = &state->dst;
> struct drm_rect *src = &state->src;
> const struct drm_rect *clip = &state->clip;
> + int max_scale = DRM_PLANE_HELPER_NO_SCALING;
> + int min_scale = DRM_PLANE_HELPER_NO_SCALING;
> int ret;
>
> crtc = crtc ? crtc : plane->crtc;
> intel_crtc = to_intel_crtc(crtc);
> + crtc_state = state->base.state ?
> + intel_atomic_get_crtc_state(state->base.state, intel_crtc) : NULL;
> +
> + if (INTEL_INFO(dev)->gen >= 9) {
> + min_scale = 1;
> + max_scale = skl_max_scale(intel_crtc, crtc_state);
> + }
>
> ret = drm_plane_helper_check_update(plane, crtc, fb,
> src, dest, clip,
> - DRM_PLANE_HELPER_NO_SCALING,
> - DRM_PLANE_HELPER_NO_SCALING,
> + min_scale,
> + max_scale,
> false, true, &state->visible);
> if (ret)
> return ret;
> @@ -12842,6 +12918,13 @@ intel_check_primary_plane(struct drm_plane *plane,
> intel_crtc->atomic.update_wm = true;
> }
>
> + if (INTEL_INFO(dev)->gen >= 9) {
> + ret = skl_update_scaler_users(intel_crtc, crtc_state,
> + to_intel_plane(plane), state, 0);
> + if (ret)
> + return ret;
> + }
> +
> return 0;
> }
>
> @@ -13021,6 +13104,9 @@ static struct drm_plane *intel_primary_plane_create(struct drm_device *dev,
>
> primary->can_scale = false;
> primary->max_downscale = 1;
> + if (INTEL_INFO(dev)->gen >= 9) {
> + primary->can_scale = true;
> + }
> state->scaler_id = -1;
> primary->pipe = pipe;
> primary->plane = pipe;
> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> index 7b28bff..0543150 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -1125,6 +1125,7 @@ void skl_detach_scalers(struct intel_crtc *intel_crtc);
> int skl_update_scaler_users(struct intel_crtc *intel_crtc,
> struct intel_crtc_state *crtc_state, struct intel_plane *intel_plane,
> struct intel_plane_state *plane_state, int force_detach);
> +int skl_max_scale(struct intel_crtc *crtc, struct intel_crtc_state *crtc_state);
>
> unsigned long intel_plane_obj_offset(struct intel_plane *intel_plane,
> struct drm_i915_gem_object *obj);
> diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
> index c05fb36..955965c 100644
> --- a/drivers/gpu/drm/i915/intel_sprite.c
> +++ b/drivers/gpu/drm/i915/intel_sprite.c
> @@ -1119,6 +1119,15 @@ int intel_sprite_set_colorkey(struct drm_device *dev, void *data,
> }
>
> intel_plane = to_intel_plane(plane);
> +
> + if (INTEL_INFO(dev)->gen >= 9) {
> + /* plane scaling and colorkey are mutually exclusive */
> + if (to_intel_plane_state(plane->state)->scaler_id >= 0) {
> + DRM_ERROR("colorkey not allowed with scaler\n");
> + return -EINVAL;
> + }
> + }
> +
> intel_plane->ckey = *set;
>
> /*
> --
> 1.7.9.5
>
--
Matt Roper
Graphics Software Engineer
IoTG Platform Enabling & Development
Intel Corporation
(916) 356-2795
More information about the Intel-gfx
mailing list