drm/amd/display: Add DCN3 MPC

Add support to program the DCN3 MPC (Multiple pipe and plane combine)

HW Blocks:

    +--------+
    |  MPC   |
    +--------+
        |
        v
    +-------+
    |  OPP  |
    +-------+
        |
        v
    +--------+
    |  OPTC  |
    +--------+
        |
        v
    +--------+       +--------+
    |  DIO   |       |  DCCG  |
    +--------+       +--------+
Signed-off-by: NBhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/core/dc.c

@@ -1370,6 +1370,43 @@ bool dc_commit_state(struct dc *dc, struct dc_state *context)
 	return (result == DC_OK);
 }
 
+#if defined(CONFIG_DRM_AMD_DC_DCN3_0)
+bool dc_acquire_release_mpc_3dlut(
+		struct dc *dc, bool acquire,
+		struct dc_stream_state *stream,
+		struct dc_3dlut **lut,
+		struct dc_transfer_func **shaper)
+{
+	int pipe_idx;
+	bool ret = false;
+	bool found_pipe_idx = false;
+	const struct resource_pool *pool = dc->res_pool;
+	struct resource_context *res_ctx = &dc->current_state->res_ctx;
+	int mpcc_id = 0;
+
+	if (pool && res_ctx) {
+		if (acquire) {
+			/*find pipe idx for the given stream*/
+			for (pipe_idx = 0; pipe_idx < pool->pipe_count; pipe_idx++) {
+				if (res_ctx->pipe_ctx[pipe_idx].stream == stream) {
+					found_pipe_idx = true;
+					mpcc_id = res_ctx->pipe_ctx[pipe_idx].plane_res.hubp->inst;
+					break;
+				}
+			}
+		} else
+			found_pipe_idx = true;/*for release pipe_idx is not required*/
+
+		if (found_pipe_idx) {
+			if (acquire && pool->funcs->acquire_post_bldn_3dlut)
+				ret = pool->funcs->acquire_post_bldn_3dlut(res_ctx, pool, mpcc_id, lut, shaper);
+			else if (acquire == false && pool->funcs->release_post_bldn_3dlut)
+				ret = pool->funcs->release_post_bldn_3dlut(res_ctx, pool, lut, shaper);
+		}
+	}
+	return ret;
+}
+#endif
 static bool is_flip_pending_in_pipes(struct dc *dc, struct dc_state *context)
 {
 	int i;

drivers/gpu/drm/amd/display/dc/inc/hw/mpc.h

@@ -27,11 +27,16 @@
 
 #include "dc_hw_types.h"
 #include "hw_shared.h"
+#include "transform.h"
 
 #define MAX_MPCC 6
 #define MAX_OPP 6
 
+#if defined(CONFIG_DRM_AMD_DC_DCN3_0)
+#define MAX_DWB		2
+#else
 #define MAX_DWB		1
+#endif
 
 enum mpc_output_csc_mode {
 	MPC_OUTPUT_CSC_DISABLE = 0,
@@ -72,6 +77,12 @@ struct mpcc_blnd_cfg {
 	int bottom_outside_gain;
 };
 
+#if defined(CONFIG_DRM_AMD_DC_DCN3_0)
+struct mpc_grph_gamut_adjustment {
+	struct fixed31_32 temperature_matrix[CSC_TEMPERATURE_MATRIX_SIZE];
+	enum graphics_gamut_adjust_type gamut_adjust_type;
+};
+#endif
 struct mpcc_sm_cfg {
 	bool enable;
 	/* 0-single plane,2-row subsampling,4-column subsampling,6-checkboard subsampling */
@@ -95,6 +106,13 @@ struct mpc_denorm_clamp {
 	int clamp_min_b_cb;
 };
 
+#if defined(CONFIG_DRM_AMD_DC_DCN3_0)
+struct mpc_dwb_flow_control {
+	int flow_ctrl_mode;
+	int flow_ctrl_cnt0;
+	int flow_ctrl_cnt1;
+};
+#endif
 /*
  * MPCC connection and blending configuration for a single MPCC instance.
  * This struct is used as a node in an MPC tree.
@@ -105,6 +123,9 @@ struct mpcc {
 	struct mpcc *mpcc_bot;		/* pointer to bottom layer MPCC.  NULL when not connected */
 	struct mpcc_blnd_cfg blnd_cfg;	/* The blending configuration for this MPCC */
 	struct mpcc_sm_cfg sm_cfg;	/* stereo mix setting for this MPCC */
+#if defined(CONFIG_DRM_AMD_DC_DCN3_0)
+	bool shared_bottom;		/* TRUE if MPCC output to both OPP and DWB endpoints, else FALSE */
+#endif
 };
 
 /*
@@ -226,6 +247,50 @@ struct mpc_funcs {
 			int opp_id,
 			bool lock);
 
+#if defined(CONFIG_DRM_AMD_DC_DCN3_0)
+	/*
+	 * Add DPP into 'secondary' MPC tree based on specified blending position.
+	 * Only used for planes that are part of blending chain for DWB output
+	 *
+	 * Parameters:
+	 * [in/out] mpc		- MPC context.
+	 * [in/out] tree		- MPC tree structure that plane will be added to.
+	 * [in]	blnd_cfg	- MPCC blending configuration for the new blending layer.
+	 * [in]	sm_cfg		- MPCC stereo mix configuration for the new blending layer.
+	 *			  stereo mix must disable for the very bottom layer of the tree config.
+	 * [in]	insert_above_mpcc - Insert new plane above this MPCC.  If NULL, insert as bottom plane.
+	 * [in]	dpp_id		- DPP instance for the plane to be added.
+	 * [in]	mpcc_id		- The MPCC physical instance to use for blending.
+	 *
+	 * Return:  struct mpcc* - MPCC that was added.
+	 */
+	struct mpcc* (*insert_plane_to_secondary)(
+			struct mpc *mpc,
+			struct mpc_tree *tree,
+			struct mpcc_blnd_cfg *blnd_cfg,
+			struct mpcc_sm_cfg *sm_cfg,
+			struct mpcc *insert_above_mpcc,
+			int dpp_id,
+			int mpcc_id);
+
+	/*
+	 * Remove a specified DPP from the 'secondary' MPC tree.
+	 *
+	 * Parameters:
+	 * [in/out] mpc		- MPC context.
+	 * [in/out] tree	- MPC tree structure that plane will be removed from.
+	 * [in]     mpcc	- MPCC to be removed from tree.
+	 * Return:  void
+	 */
+	void (*remove_mpcc_from_secondary)(
+			struct mpc *mpc,
+			struct mpc_tree *tree,
+			struct mpcc *mpcc);
+
+	struct mpcc* (*get_mpcc_for_dpp_from_secondary)(
+			struct mpc_tree *tree,
+			int dpp_id);
+#endif
 	struct mpcc* (*get_mpcc_for_dpp)(
 			struct mpc_tree *tree,
 			int dpp_id);
@@ -265,6 +330,49 @@ struct mpc_funcs {
 			struct mpc *mpc,
 			int mpcc_id,
 			bool power_on);
+#if defined(CONFIG_DRM_AMD_DC_DCN3_0)
+	void (*set_dwb_mux)(
+			struct mpc *mpc,
+			int dwb_id,
+			int mpcc_id);
+
+	void (*disable_dwb_mux)(
+		struct mpc *mpc,
+		int dwb_id);
+
+	bool (*is_dwb_idle)(
+		struct mpc *mpc,
+		int dwb_id);
+
+	void (*set_out_rate_control)(
+		struct mpc *mpc,
+		int opp_id,
+		bool enable,
+		bool rate_2x_mode,
+		struct mpc_dwb_flow_control *flow_control);
+#endif
+
+#if defined(CONFIG_DRM_AMD_DC_DCN3_0)
+	void (*set_gamut_remap)(
+			struct mpc *mpc,
+			int mpcc_id,
+			const struct mpc_grph_gamut_adjustment *adjust);
+
+	bool (*program_shaper)(
+			struct mpc *mpc,
+			const struct pwl_params *params,
+			uint32_t rmu_idx);
+
+	uint32_t (*acquire_rmu)(struct mpc *mpc, int mpcc_id, int rmu_idx);
+
+	bool (*program_3dlut)(
+			struct mpc *mpc,
+			const struct tetrahedral_params *params,
+			int rmu_idx);
+
+	int (*release_rmu)(struct mpc *mpc, int mpcc_id);
+
+#endif
 
 };