linux/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_opp.c

/*
 * Copyright 2012-15 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
 *
 */

#include "dm_services.h"
#include "dcn10_opp.h"
#include "reg_helper.h"

#define REG(reg) \
	(oppn10->regs->reg)

#undef FN
#define FN(reg_name, field_name) \
	oppn10->opp_shift->field_name, oppn10->opp_mask->field_name

#define CTX \
	oppn10->base.ctx



/************* FORMATTER ************/

/**
 *	set_truncation
 *	1) set truncation depth: 0 for 18 bpp or 1 for 24 bpp
 *	2) enable truncation
 *	3) HW remove 12bit FMT support for DCE11 power saving reason.
 */
static void set_truncation(
		struct dcn10_opp *oppn10,
		const struct bit_depth_reduction_params *params)
{
	REG_UPDATE_3(FMT_BIT_DEPTH_CONTROL,
		FMT_TRUNCATE_EN, params->flags.TRUNCATE_ENABLED,
		FMT_TRUNCATE_DEPTH, params->flags.TRUNCATE_DEPTH,
		FMT_TRUNCATE_MODE, params->flags.TRUNCATE_MODE);
}

static void set_spatial_dither(
	struct dcn10_opp *oppn10,
	const struct bit_depth_reduction_params *params)
{
	/*Disable spatial (random) dithering*/
	REG_UPDATE_7(FMT_BIT_DEPTH_CONTROL,
			FMT_SPATIAL_DITHER_EN, 0,
			FMT_SPATIAL_DITHER_MODE, 0,
			FMT_SPATIAL_DITHER_DEPTH, 0,
			FMT_TEMPORAL_DITHER_EN, 0,
			FMT_HIGHPASS_RANDOM_ENABLE, 0,
			FMT_FRAME_RANDOM_ENABLE, 0,
			FMT_RGB_RANDOM_ENABLE, 0);


	/* only use FRAME_COUNTER_MAX if frameRandom == 1*/
	if (params->flags.FRAME_RANDOM == 1) {
		if (params->flags.SPATIAL_DITHER_DEPTH == 0 || params->flags.SPATIAL_DITHER_DEPTH == 1) {
			REG_UPDATE_2(FMT_CONTROL,
					FMT_SPATIAL_DITHER_FRAME_COUNTER_MAX, 15,
					FMT_SPATIAL_DITHER_FRAME_COUNTER_BIT_SWAP, 2);
		} else if (params->flags.SPATIAL_DITHER_DEPTH == 2) {
			REG_UPDATE_2(FMT_CONTROL,
					FMT_SPATIAL_DITHER_FRAME_COUNTER_MAX, 3,
					FMT_SPATIAL_DITHER_FRAME_COUNTER_BIT_SWAP, 1);
		} else {
			return;
		}
	} else {
		REG_UPDATE_2(FMT_CONTROL,
				FMT_SPATIAL_DITHER_FRAME_COUNTER_MAX, 0,
				FMT_SPATIAL_DITHER_FRAME_COUNTER_BIT_SWAP, 0);
	}

	/*Set seed for random values for
	 * spatial dithering for R,G,B channels*/

	REG_SET(FMT_DITHER_RAND_R_SEED, 0,
			FMT_RAND_R_SEED, params->r_seed_value);

	REG_SET(FMT_DITHER_RAND_G_SEED, 0,
			FMT_RAND_G_SEED, params->g_seed_value);

	REG_SET(FMT_DITHER_RAND_B_SEED, 0,
			FMT_RAND_B_SEED, params->b_seed_value);

	/* FMT_OFFSET_R_Cr  31:16 0x0 Setting the zero
	 * offset for the R/Cr channel, lower 4LSB
	 * is forced to zeros. Typically set to 0
	 * RGB and 0x80000 YCbCr.
	 */
	/* FMT_OFFSET_G_Y   31:16 0x0 Setting the zero
	 * offset for the G/Y  channel, lower 4LSB is
	 * forced to zeros. Typically set to 0 RGB
	 * and 0x80000 YCbCr.
	 */
	/* FMT_OFFSET_B_Cb  31:16 0x0 Setting the zero
	 * offset for the B/Cb channel, lower 4LSB is
	 * forced to zeros. Typically set to 0 RGB and
	 * 0x80000 YCbCr.
	 */

	REG_UPDATE_6(FMT_BIT_DEPTH_CONTROL,
			/*Enable spatial dithering*/
			FMT_SPATIAL_DITHER_EN, params->flags.SPATIAL_DITHER_ENABLED,
			/* Set spatial dithering mode
			 * (default is Seed patterrn AAAA...)
			 */
			FMT_SPATIAL_DITHER_MODE, params->flags.SPATIAL_DITHER_MODE,
			/*Set spatial dithering bit depth*/
			FMT_SPATIAL_DITHER_DEPTH, params->flags.SPATIAL_DITHER_DEPTH,
			/*Disable High pass filter*/
			FMT_HIGHPASS_RANDOM_ENABLE, params->flags.HIGHPASS_RANDOM,
			/*Reset only at startup*/
			FMT_FRAME_RANDOM_ENABLE, params->flags.FRAME_RANDOM,
			/*Set RGB data dithered with x^28+x^3+1*/
			FMT_RGB_RANDOM_ENABLE, params->flags.RGB_RANDOM);
}

static void oppn10_program_bit_depth_reduction(
	struct output_pixel_processor *opp,
	const struct bit_depth_reduction_params *params)
{
	struct dcn10_opp *oppn10 = TO_DCN10_OPP(opp);

	set_truncation(oppn10, params);
	set_spatial_dither(oppn10, params);
	/* TODO
	 * set_temporal_dither(oppn10, params);
	 */
}

/**
 *	set_pixel_encoding
 *
 *	Set Pixel Encoding
 *		0: RGB 4:4:4 or YCbCr 4:4:4 or YOnly
 *		1: YCbCr 4:2:2
 */
static void set_pixel_encoding(
	struct dcn10_opp *oppn10,
	const struct clamping_and_pixel_encoding_params *params)
{
	switch (params->pixel_encoding)	{

	case PIXEL_ENCODING_RGB:
	case PIXEL_ENCODING_YCBCR444:
		REG_UPDATE(FMT_CONTROL, FMT_PIXEL_ENCODING, 0);
		break;
	case PIXEL_ENCODING_YCBCR422:
		REG_UPDATE(FMT_CONTROL, FMT_PIXEL_ENCODING, 1);
		break;
	case PIXEL_ENCODING_YCBCR420:
		REG_UPDATE(FMT_CONTROL, FMT_PIXEL_ENCODING, 2);
		break;
	default:
		break;
	}
}

/**
 *	Set Clamping
 *	1) Set clamping format based on bpc - 0 for 6bpc (No clamping)
 *		1 for 8 bpc
 *		2 for 10 bpc
 *		3 for 12 bpc
 *		7 for programable
 *	2) Enable clamp if Limited range requested
 */
static void opp_set_clamping(
	struct dcn10_opp *oppn10,
	const struct clamping_and_pixel_encoding_params *params)
{
	REG_UPDATE_2(FMT_CLAMP_CNTL,
			FMT_CLAMP_DATA_EN, 0,
			FMT_CLAMP_COLOR_FORMAT, 0);

	switch (params->clamping_level) {
	case CLAMPING_FULL_RANGE:
		REG_UPDATE_2(FMT_CLAMP_CNTL,
				FMT_CLAMP_DATA_EN, 1,
				FMT_CLAMP_COLOR_FORMAT, 0);
		break;
	case CLAMPING_LIMITED_RANGE_8BPC:
		REG_UPDATE_2(FMT_CLAMP_CNTL,
				FMT_CLAMP_DATA_EN, 1,
				FMT_CLAMP_COLOR_FORMAT, 1);
		break;
	case CLAMPING_LIMITED_RANGE_10BPC:
		REG_UPDATE_2(FMT_CLAMP_CNTL,
				FMT_CLAMP_DATA_EN, 1,
				FMT_CLAMP_COLOR_FORMAT, 2);

		break;
	case CLAMPING_LIMITED_RANGE_12BPC:
		REG_UPDATE_2(FMT_CLAMP_CNTL,
				FMT_CLAMP_DATA_EN, 1,
				FMT_CLAMP_COLOR_FORMAT, 3);
		break;
	case CLAMPING_LIMITED_RANGE_PROGRAMMABLE:
		/* TODO */
	default:
		break;
	}

}

static void oppn10_set_dyn_expansion(
	struct output_pixel_processor *opp,
	enum dc_color_space color_sp,
	enum dc_color_depth color_dpth,
	enum signal_type signal)
{
	struct dcn10_opp *oppn10 = TO_DCN10_OPP(opp);

	REG_UPDATE_2(FMT_DYNAMIC_EXP_CNTL,
			FMT_DYNAMIC_EXP_EN, 0,
			FMT_DYNAMIC_EXP_MODE, 0);

	/*00 - 10-bit -> 12-bit dynamic expansion*/
	/*01 - 8-bit  -> 12-bit dynamic expansion*/
	if (signal == SIGNAL_TYPE_HDMI_TYPE_A ||
		signal == SIGNAL_TYPE_DISPLAY_PORT ||
		signal == SIGNAL_TYPE_DISPLAY_PORT_MST ||
		signal == SIGNAL_TYPE_VIRTUAL) {
		switch (color_dpth) {
		case COLOR_DEPTH_888:
			REG_UPDATE_2(FMT_DYNAMIC_EXP_CNTL,
				FMT_DYNAMIC_EXP_EN, 1,
				FMT_DYNAMIC_EXP_MODE, 1);
			break;
		case COLOR_DEPTH_101010:
			REG_UPDATE_2(FMT_DYNAMIC_EXP_CNTL,
				FMT_DYNAMIC_EXP_EN, 1,
				FMT_DYNAMIC_EXP_MODE, 0);
			break;
		case COLOR_DEPTH_121212:
			REG_UPDATE_2(FMT_DYNAMIC_EXP_CNTL,
				FMT_DYNAMIC_EXP_EN, 1,/*otherwise last two bits are zero*/
				FMT_DYNAMIC_EXP_MODE, 0);
			break;
		default:
			break;
		}
	}
}

static void opp_program_clamping_and_pixel_encoding(
	struct output_pixel_processor *opp,
	const struct clamping_and_pixel_encoding_params *params)
{
	struct dcn10_opp *oppn10 = TO_DCN10_OPP(opp);

	opp_set_clamping(oppn10, params);
	set_pixel_encoding(oppn10, params);
}

static void oppn10_program_fmt(
	struct output_pixel_processor *opp,
	struct bit_depth_reduction_params *fmt_bit_depth,
	struct clamping_and_pixel_encoding_params *clamping)
{
	struct dcn10_opp *oppn10 = TO_DCN10_OPP(opp);

	if (clamping->pixel_encoding == PIXEL_ENCODING_YCBCR420)
		REG_UPDATE(FMT_MAP420_MEMORY_CONTROL, FMT_MAP420MEM_PWR_FORCE, 0);

	/* dithering is affected by <CrtcSourceSelect>, hence should be
	 * programmed afterwards */
	oppn10_program_bit_depth_reduction(
		opp,
		fmt_bit_depth);

	opp_program_clamping_and_pixel_encoding(
		opp,
		clamping);

	return;
}



static void oppn10_set_stereo_polarity(
		struct output_pixel_processor *opp,
		bool enable, bool rightEyePolarity)
{
	struct dcn10_opp *oppn10 = TO_DCN10_OPP(opp);

	REG_UPDATE(FMT_CONTROL, FMT_STEREOSYNC_OVERRIDE, enable);
}

/*****************************************/
/* Constructor, Destructor               */
/*****************************************/

static void dcn10_opp_destroy(struct output_pixel_processor **opp)
{
	kfree(TO_DCN10_OPP(*opp));
	*opp = NULL;
}

static struct opp_funcs dcn10_opp_funcs = {
		.opp_set_dyn_expansion = oppn10_set_dyn_expansion,
		.opp_program_fmt = oppn10_program_fmt,
		.opp_program_bit_depth_reduction = oppn10_program_bit_depth_reduction,
		.opp_set_stereo_polarity = oppn10_set_stereo_polarity,
		.opp_destroy = dcn10_opp_destroy
};

void dcn10_opp_construct(struct dcn10_opp *oppn10,
	struct dc_context *ctx,
	uint32_t inst,
	const struct dcn10_opp_registers *regs,
	const struct dcn10_opp_shift *opp_shift,
	const struct dcn10_opp_mask *opp_mask)
{
	int i;
	oppn10->base.ctx = ctx;
	oppn10->base.inst = inst;
	oppn10->base.funcs = &dcn10_opp_funcs;

	oppn10->base.mpc_tree.dpp[0] = inst;
	oppn10->base.mpc_tree.mpcc[0] = inst;
	oppn10->base.mpc_tree.num_pipes = 1;
	for (i = 0; i < MAX_PIPES; i++)
		oppn10->base.mpcc_disconnect_pending[i] = false;

	oppn10->regs = regs;
	oppn10->opp_shift = opp_shift;
	oppn10->opp_mask = opp_mask;
}