drm/amd/display: Add DCN2 DWB

Add support to program the DCN2 DWB (Display Writeback)

HW Blocks:

 +--------++------+       +----------+
 | HUBBUB || HUBP |  <--  | MMHUBBUB |
 +--------++------+       +----------+
        |                     ^
        v                     |
    +--------+            +--------+
    |  DPP   |            |  DWB   |
    +--------+            +--------+
        |
        v                      ^
    +--------+                 |
    |  MPC   |                 |
    +--------+                 |
        |                      |
        v                      |
    +-------+                  |
    |  OPP  |                  |
    +-------+                  |
        |                      |
        v                      |
    +--------+                /
    |  OPTC  |  --------------
    +--------+
        |
        v
    +--------+       +--------+
    |  DIO   |       |  DCCG  |
    +--------+       +--------+

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 105 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/mcif_wb.h b/drivers/gpu/drm/amd/display/dc/inc/hw/mcif_wb.h
new file mode 100644
index 000000000000..a5c8d92fc5c2
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/mcif_wb.h
@@ -0,0 +1,105 @@
+/* Copyright 2012-17 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#ifndef __DC_MCIF_WB_H__
+#define __DC_MCIF_WB_H__
+
+#include "dc_hw_types.h"
+
+
+enum mmhubbub_wbif_mode {
+	PACKED_444 = 0,
+	PACKED_444_FP16 = 1,
+	PLANAR_420_8BPC = 2,
+	PLANAR_420_10BPC = 3
+};
+
+struct mcif_arb_params {
+
+	unsigned int		time_per_pixel;
+	unsigned int		cli_watermark[4];
+	unsigned int		pstate_watermark[4];
+	unsigned int		arbitration_slice;
+	unsigned int		slice_lines;
+	unsigned int		max_scaled_time;
+};
+
+struct mcif_irq_params {
+	unsigned int		sw_int_en;
+	unsigned int		sw_slice_int_en;
+	unsigned int		sw_overrun_int_en;
+	unsigned int		vce_int_en;
+	unsigned int		vce_slice_int_en;
+};
+
+
+/* / - mcif_wb_frame_dump_info is the info of the dumping WB data */
+struct mcif_wb_frame_dump_info {
+	unsigned int		size;
+	unsigned int		width;
+	unsigned int		height;
+	unsigned int		luma_pitch;
+	unsigned int		chroma_pitch;
+	enum dwb_scaler_mode	format;
+};
+
+struct mcif_wb {
+	const struct mcif_wb_funcs *funcs;
+	struct dc_context *ctx;
+	int inst;
+};
+
+struct mcif_wb_funcs {
+
+	void (*enable_mcif)(struct mcif_wb *mcif_wb);
+
+	void (*disable_mcif)(struct mcif_wb *mcif_wb);
+
+	void (*config_mcif_buf)(
+		struct mcif_wb *mcif_wb,
+		struct mcif_buf_params *params,
+		unsigned int dest_height);
+
+	 void (*config_mcif_arb)(
+		struct mcif_wb *mcif_wb,
+		struct mcif_arb_params *params);
+
+	 void (*config_mcif_irq)(
+		struct mcif_wb *mcif_wb,
+		struct mcif_irq_params *params);
+
+	void (*dump_frame)(
+		struct mcif_wb *mcif_wb,
+		struct mcif_buf_params *mcif_params,
+		enum dwb_scaler_mode out_format,
+		unsigned int dest_width,
+		unsigned int dest_height,
+		struct mcif_wb_frame_dump_info *dump_info,
+		unsigned char *luma_buffer,
+		unsigned char *chroma_buffer,
+		unsigned char *dest_luma_buffer,
+		unsigned char *dest_chroma_buffer);
+};
+
+#endif