drm/amd/display: Connect DC resource to FBC compressor

- Connected DC resource to FBC compressor,
- Initial Implementation of FBC for Stoney/Carrizo
- Code is currently guarded with "ENABLE_FBC" compile time flag

Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Reviewed-by: Roman Li <Roman.Li@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -843,6 +843,11 @@ bool dc_enable_stereo(
 	int i, j;
 	struct pipe_ctx *pipe;
 	struct core_dc *core_dc = DC_TO_CORE(dc);
+
+#ifdef ENABLE_FBC
+	struct compressor *fbc_compressor = core_dc->fbc_compressor;
+#endif
+
 	for (i = 0; i < MAX_PIPES; i++) {
 		if (context != NULL)
 			pipe = &context->res_ctx.pipe_ctx[i];
@@ -854,6 +859,14 @@ bool dc_enable_stereo(
 				core_dc->hwss.setup_stereo(pipe, core_dc);
 		}
 	}
+
+#ifdef ENABLE_FBC
+	if (fbc_compressor != NULL &&
+	    fbc_compressor->funcs->is_fbc_enabled_in_hw(core_dc->fbc_compressor,
+							&pipe->tg->inst))
+		fbc_compressor->funcs->disable_fbc(fbc_compressor);
+
+#endif
 	return ret;
 }
 
@@ -1232,6 +1245,12 @@ void dc_update_surfaces_and_stream(struct dc *dc,
 	if (!stream_status)
 		return; /* Cannot commit surface to stream that is not committed */
 
+#ifdef ENABLE_FBC
+	if (srf_updates->flip_addr) {
+		if (srf_updates->flip_addr->address.grph.addr.low_part == 0)
+			ASSERT(0);
+	}
+#endif
 	context = core_dc->current_context;
 
 	/* update current stream with the new updates */

drivers/gpu/drm/amd/display/dc/dce110/dce110_compressor.c

@@ -175,7 +175,6 @@ void dce110_compressor_power_up_fbc(struct compressor *compressor)
 
 void dce110_compressor_enable_fbc(
 	struct compressor *compressor,
-	uint32_t paths_num,
 	struct compr_addr_and_pitch_params *params)
 {
 	struct dce110_compressor *cp110 = TO_DCE110_COMPRESSOR(compressor);
@@ -366,43 +365,6 @@ void dce110_compressor_set_fbc_invalidation_triggers(
 	dm_write_reg(compressor->ctx, addr, value);
 }
 
-bool dce110_compressor_construct(struct dce110_compressor *compressor,
-				 struct dc_context *ctx)
-{
-
-	compressor->base.options.bits.FBC_SUPPORT = true;
-
-	 /* for dce 11 always use one dram channel for lpt */
-	compressor->base.lpt_channels_num = 1;
-	compressor->base.options.bits.DUMMY_BACKEND = false;
-
-	/*
-	 * check if this system has more than 1 dram channel; if only 1 then lpt
-	 * should not be supported
-	 */
-
-
-	compressor->base.options.bits.CLK_GATING_DISABLED = false;
-
-	compressor->base.ctx = ctx;
-	compressor->base.embedded_panel_h_size = 0;
-	compressor->base.embedded_panel_v_size = 0;
-	compressor->base.memory_bus_width = ctx->asic_id.vram_width;
-	compressor->base.allocated_size = 0;
-	compressor->base.preferred_requested_size = 0;
-	compressor->base.min_compress_ratio = FBC_COMPRESS_RATIO_INVALID;
-	compressor->base.options.raw = 0;
-	compressor->base.banks_num = 0;
-	compressor->base.raw_size = 0;
-	compressor->base.channel_interleave_size = 0;
-	compressor->base.dram_channels_num = 0;
-	compressor->base.lpt_channels_num = 0;
-	compressor->base.attached_inst = 0;
-	compressor->base.is_enabled = false;
-
-	return true;
-}
-
 struct compressor *dce110_compressor_create(struct dc_context *ctx)
 {
 	struct dce110_compressor *cp110 =
@@ -503,3 +465,43 @@ static const struct compressor_funcs dce110_compressor_funcs = {
 };
 
 
+bool dce110_compressor_construct(struct dce110_compressor *compressor,
+	struct dc_context *ctx)
+{
+
+	compressor->base.options.bits.FBC_SUPPORT = true;
+
+	/* for dce 11 always use one dram channel for lpt */
+	compressor->base.lpt_channels_num = 1;
+	compressor->base.options.bits.DUMMY_BACKEND = false;
+
+	/*
+	 * check if this system has more than 1 dram channel; if only 1 then lpt
+	 * should not be supported
+	 */
+
+
+	compressor->base.options.bits.CLK_GATING_DISABLED = false;
+
+	compressor->base.ctx = ctx;
+	compressor->base.embedded_panel_h_size = 0;
+	compressor->base.embedded_panel_v_size = 0;
+	compressor->base.memory_bus_width = ctx->asic_id.vram_width;
+	compressor->base.allocated_size = 0;
+	compressor->base.preferred_requested_size = 0;
+	compressor->base.min_compress_ratio = FBC_COMPRESS_RATIO_INVALID;
+	compressor->base.options.raw = 0;
+	compressor->base.banks_num = 0;
+	compressor->base.raw_size = 0;
+	compressor->base.channel_interleave_size = 0;
+	compressor->base.dram_channels_num = 0;
+	compressor->base.lpt_channels_num = 0;
+	compressor->base.attached_inst = 0;
+	compressor->base.is_enabled = false;
+#ifdef ENABLE_FBC
+	compressor->base.funcs = &dce110_compressor_funcs;
+
+#endif
+	return true;
+}
+

drivers/gpu/drm/amd/display/dc/dce110/dce110_compressor.h

@@ -50,7 +50,7 @@ void dce110_compressor_destroy(struct compressor **cp);
 /* FBC RELATED */
 void dce110_compressor_power_up_fbc(struct compressor *cp);
 
-void dce110_compressor_enable_fbc(struct compressor *cp, uint32_t paths_num,
+void dce110_compressor_enable_fbc(struct compressor *cp,
 	struct compr_addr_and_pitch_params *params);
 
 void dce110_compressor_disable_fbc(struct compressor *cp);

drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c

@@ -33,6 +33,10 @@
 #include "dce110_timing_generator.h"
 #include "dce/dce_hwseq.h"
 
+#ifdef ENABLE_FBC
+#include "dce110_compressor.h"
+#endif
+
 #include "bios/bios_parser_helper.h"
 #include "timing_generator.h"
 #include "mem_input.h"
@@ -1166,6 +1170,10 @@ static void power_down_all_hw_blocks(struct core_dc *dc)
 	power_down_controllers(dc);
 
 	power_down_clock_sources(dc);
+
+#ifdef ENABLE_FBC
+	dc->fbc_compressor->funcs->disable_fbc(dc->fbc_compressor);
+#endif
 }
 
 static void disable_vga_and_power_gate_all_controllers(
@@ -1630,6 +1638,10 @@ enum dc_status dce110_apply_ctx_to_hw(
 	}
 
 	set_safe_displaymarks(&context->res_ctx, dc->res_pool);
+
+#ifdef ENABLE_FBC
+	dc->fbc_compressor->funcs->disable_fbc(dc->fbc_compressor);
+#endif
 	/*TODO: when pplib works*/
 	apply_min_clocks(dc, context, &clocks_state, true);
 
@@ -2215,6 +2227,9 @@ static void init_hw(struct core_dc *dc)
 		abm->funcs->init_backlight(abm);
 		abm->funcs->abm_init(abm);
 	}
+#ifdef ENABLE_FBC
+	dc->fbc_compressor->funcs->power_up_fbc(dc->fbc_compressor);
+#endif
 }
 
 void dce110_fill_display_configs(

drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c

@@ -52,6 +52,10 @@
 #include "dce/dce_abm.h"
 #include "dce/dce_dmcu.h"
 
+#ifdef ENABLE_FBC
+#include "dce110/dce110_compressor.h"
+#endif
+
 #include "reg_helper.h"
 
 #include "dce/dce_11_0_d.h"
@@ -1347,6 +1351,12 @@ static bool construct(
 		}
 	}
 
+#ifdef ENABLE_FBC
+	dc->fbc_compressor = dce110_compressor_create(ctx);
+
+
+
+#endif
 	if (!underlay_create(ctx, &pool->base))
 		goto res_create_fail;
 

drivers/gpu/drm/amd/display/dc/inc/compressor.h

@@ -45,7 +45,7 @@ union fbc_physical_address {
 };
 
 struct compr_addr_and_pitch_params {
-	enum controller_id controller_id;
+	/* enum controller_id controller_id; */
 	uint32_t inst;
 	uint32_t source_view_width;
 	uint32_t source_view_height;
@@ -63,7 +63,7 @@ struct compressor;
 struct compressor_funcs {
 
 	void (*power_up_fbc)(struct compressor *cp);
-	void (*enable_fbc)(struct compressor *cp, uint32_t paths_num,
+	void (*enable_fbc)(struct compressor *cp,
 		struct compr_addr_and_pitch_params *params);
 	void (*disable_fbc)(struct compressor *cp);
 	void (*set_fbc_invalidation_triggers)(struct compressor *cp,
@@ -78,7 +78,7 @@ struct compressor {
 	struct dc_context *ctx;
 	uint32_t attached_inst;
 	bool is_enabled;
-	const struct compressor_funcs funcs;
+	const struct compressor_funcs *funcs;
 	union {
 		uint32_t raw;
 		struct {

drivers/gpu/drm/amd/display/dc/inc/core_dc.h

@@ -10,6 +10,7 @@
 
 #include "core_types.h"
 #include "hw_sequencer.h"
+#include "compressor.h"
 
 #define DC_TO_CORE(dc)\
 	container_of(dc, struct core_dc, public)
@@ -44,6 +45,11 @@ struct core_dc {
 	 * to compare to see if display config changed
 	 */
 	struct dm_pp_display_configuration prev_display_config;
+
+	/* FBC compressor */
+#ifdef ENABLE_FBC
+	struct compressor *fbc_compressor;
+#endif
 };
 
 #endif /* __CORE_DC_H__ */