drm/i915/skl: Read back the DDB allocation hw state (a269c583) · Commits · 戴 / test

drivers/gpu/drm/i915/intel_pm.c

+29 −0

Original line number	Diff line number	Diff line
		@@ -3051,6 +3051,32 @@ static unsigned int skl_cursor_allocation(const struct intel_wm_config *config)
		return 8;
		}

		static void skl_ddb_entry_init_from_hw(struct skl_ddb_entry *entry, u32 reg)
		{
		entry->start = reg & 0x3ff;
		entry->end = (reg >> 16) & 0x3ff;
		}

		static void skl_ddb_get_hw_state(struct drm_i915_private *dev_priv,
		struct skl_ddb_allocation ddb / out */)
		{
		struct drm_device *dev = dev_priv->dev;
		enum pipe pipe;
		int plane;
		u32 val;

		for_each_pipe(dev_priv, pipe) {
		for_each_plane(pipe, plane) {
		val = I915_READ(PLANE_BUF_CFG(pipe, plane));
		skl_ddb_entry_init_from_hw(&ddb->plane[pipe][plane],
		val);
		}

		val = I915_READ(CUR_BUF_CFG(pipe));
		skl_ddb_entry_init_from_hw(&ddb->cursor[pipe], val);
		}
		}

		static unsigned int
		skl_plane_relative_data_rate(const struct intel_plane_wm_parameters *p)
		{
		@@ -3749,8 +3775,11 @@ static void skl_pipe_wm_get_hw_state(struct drm_crtc *crtc)

		void skl_wm_get_hw_state(struct drm_device *dev)
		{
		struct drm_i915_private *dev_priv = dev->dev_private;
		struct skl_ddb_allocation *ddb = &dev_priv->wm.skl_hw.ddb;
		struct drm_crtc *crtc;

		skl_ddb_get_hw_state(dev_priv, ddb);
		list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
		skl_pipe_wm_get_hw_state(crtc);
		}