xref: /openbmc/linux/drivers/gpu/drm/amd/display/dc/gpio/dcn315/hw_translate_dcn315.c (revision b9d7eb6a)

/*
 * Copyright 2021 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 "hw_translate_dcn315.h"

#include "dm_services.h"
#include "include/gpio_types.h"
#include "../hw_translate.h"

#include "dcn/dcn_3_1_5_offset.h"
#include "dcn/dcn_3_1_5_sh_mask.h"

/* begin *********************
 * macros to expend register list macro defined in HW object header file */

#define DCN_BASE__INST0_SEG0                       0x00000012
#define DCN_BASE__INST0_SEG1                       0x000000C0
#define DCN_BASE__INST0_SEG2                       0x000034C0
#define DCN_BASE__INST0_SEG3                       0x00009000
#define DCN_BASE__INST0_SEG4                       0x02403C00
#define DCN_BASE__INST0_SEG5                       0

/* DCN */
#define block HPD
#define reg_num 0

#undef BASE_INNER
#define BASE_INNER(seg) DCN_BASE__INST0_SEG ## seg

#define BASE(seg) BASE_INNER(seg)

#undef REG
#define REG(reg_name)\
		BASE(reg ## reg_name ## _BASE_IDX) + reg ## reg_name
#define SF_HPD(reg_name, field_name, post_fix)\
	.field_name = reg_name ## __ ## field_name ## post_fix


/* macros to expend register list macro defined in HW object header file
 * end *********************/


static bool offset_to_id(
	uint32_t offset,
	uint32_t mask,
	enum gpio_id *id,
	uint32_t *en)
{
	switch (offset) {
	/* GENERIC */
	case REG(DC_GPIO_GENERIC_A):
		*id = GPIO_ID_GENERIC;
		switch (mask) {
		case DC_GPIO_GENERIC_A__DC_GPIO_GENERICA_A_MASK:
			*en = GPIO_GENERIC_A;
			return true;
		case DC_GPIO_GENERIC_A__DC_GPIO_GENERICB_A_MASK:
			*en = GPIO_GENERIC_B;
			return true;
		case DC_GPIO_GENERIC_A__DC_GPIO_GENERICC_A_MASK:
			*en = GPIO_GENERIC_C;
			return true;
		case DC_GPIO_GENERIC_A__DC_GPIO_GENERICD_A_MASK:
			*en = GPIO_GENERIC_D;
			return true;
		case DC_GPIO_GENERIC_A__DC_GPIO_GENERICE_A_MASK:
			*en = GPIO_GENERIC_E;
			return true;
		case DC_GPIO_GENERIC_A__DC_GPIO_GENERICF_A_MASK:
			*en = GPIO_GENERIC_F;
			return true;
		case DC_GPIO_GENERIC_A__DC_GPIO_GENERICG_A_MASK:
			*en = GPIO_GENERIC_G;
			return true;
		default:
			ASSERT_CRITICAL(false);
			return false;
		}
	break;
	/* HPD */
	case REG(DC_GPIO_HPD_A):
		*id = GPIO_ID_HPD;
		switch (mask) {
		case DC_GPIO_HPD_A__DC_GPIO_HPD1_A_MASK:
			*en = GPIO_HPD_1;
			return true;
		case DC_GPIO_HPD_A__DC_GPIO_HPD2_A_MASK:
			*en = GPIO_HPD_2;
			return true;
		case DC_GPIO_HPD_A__DC_GPIO_HPD3_A_MASK:
			*en = GPIO_HPD_3;
			return true;
		case DC_GPIO_HPD_A__DC_GPIO_HPD4_A_MASK:
			*en = GPIO_HPD_4;
			return true;
		case DC_GPIO_HPD_A__DC_GPIO_HPD5_A_MASK:
			*en = GPIO_HPD_5;
			return true;
		case DC_GPIO_HPD_A__DC_GPIO_HPD6_A_MASK:
			*en = GPIO_HPD_6;
			return true;
		default:
			ASSERT_CRITICAL(false);
			return false;
		}
	break;
	/* REG(DC_GPIO_GENLK_MASK */
	case REG(DC_GPIO_GENLK_A):
		*id = GPIO_ID_GSL;
		switch (mask) {
		case DC_GPIO_GENLK_A__DC_GPIO_GENLK_CLK_A_MASK:
			*en = GPIO_GSL_GENLOCK_CLOCK;
			return true;
		case DC_GPIO_GENLK_A__DC_GPIO_GENLK_VSYNC_A_MASK:
			*en = GPIO_GSL_GENLOCK_VSYNC;
			return true;
		case DC_GPIO_GENLK_A__DC_GPIO_SWAPLOCK_A_A_MASK:
			*en = GPIO_GSL_SWAPLOCK_A;
			return true;
		case DC_GPIO_GENLK_A__DC_GPIO_SWAPLOCK_B_A_MASK:
			*en = GPIO_GSL_SWAPLOCK_B;
			return true;
		default:
			ASSERT_CRITICAL(false);
			return false;
		}
	break;
	/* DDC */
	/* we don't care about the GPIO_ID for DDC
	 * in DdcHandle it will use GPIO_ID_DDC_DATA/GPIO_ID_DDC_CLOCK
	 * directly in the create method
	 */
	case REG(DC_GPIO_DDC1_A):
		*en = GPIO_DDC_LINE_DDC1;
		return true;
	case REG(DC_GPIO_DDC2_A):
		*en = GPIO_DDC_LINE_DDC2;
		return true;
	case REG(DC_GPIO_DDC3_A):
		*en = GPIO_DDC_LINE_DDC3;
		return true;
	case REG(DC_GPIO_DDC4_A):
		*en = GPIO_DDC_LINE_DDC4;
		return true;
	case REG(DC_GPIO_DDC5_A):
		*en = GPIO_DDC_LINE_DDC5;
		return true;
	case REG(DC_GPIO_DDCVGA_A):
		*en = GPIO_DDC_LINE_DDC_VGA;
		return true;

/*
 *	case REG(DC_GPIO_I2CPAD_A): not exit
 *	case REG(DC_GPIO_PWRSEQ_A):
 *	case REG(DC_GPIO_PAD_STRENGTH_1):
 *	case REG(DC_GPIO_PAD_STRENGTH_2):
 *	case REG(DC_GPIO_DEBUG):
 */
	/* UNEXPECTED */
	default:
/*	case REG(DC_GPIO_SYNCA_A): not exist */
		ASSERT_CRITICAL(false);
		return false;
	}
}

static bool id_to_offset(
	enum gpio_id id,
	uint32_t en,
	struct gpio_pin_info *info)
{
	bool result = true;

	switch (id) {
	case GPIO_ID_DDC_DATA:
		info->mask = DC_GPIO_DDC1_A__DC_GPIO_DDC1DATA_A_MASK;
		switch (en) {
		case GPIO_DDC_LINE_DDC1:
			info->offset = REG(DC_GPIO_DDC1_A);
		break;
		case GPIO_DDC_LINE_DDC2:
			info->offset = REG(DC_GPIO_DDC2_A);
		break;
		case GPIO_DDC_LINE_DDC3:
			info->offset = REG(DC_GPIO_DDC3_A);
		break;
		case GPIO_DDC_LINE_DDC4:
			info->offset = REG(DC_GPIO_DDC4_A);
		break;
		case GPIO_DDC_LINE_DDC5:
			info->offset = REG(DC_GPIO_DDC5_A);
		break;
		case GPIO_DDC_LINE_DDC_VGA:
			info->offset = REG(DC_GPIO_DDCVGA_A);
		break;
		case GPIO_DDC_LINE_I2C_PAD:
		default:
			ASSERT_CRITICAL(false);
			result = false;
		}
	break;
	case GPIO_ID_DDC_CLOCK:
		info->mask = DC_GPIO_DDC1_A__DC_GPIO_DDC1CLK_A_MASK;
		switch (en) {
		case GPIO_DDC_LINE_DDC1:
			info->offset = REG(DC_GPIO_DDC1_A);
		break;
		case GPIO_DDC_LINE_DDC2:
			info->offset = REG(DC_GPIO_DDC2_A);
		break;
		case GPIO_DDC_LINE_DDC3:
			info->offset = REG(DC_GPIO_DDC3_A);
		break;
		case GPIO_DDC_LINE_DDC4:
			info->offset = REG(DC_GPIO_DDC4_A);
		break;
		case GPIO_DDC_LINE_DDC5:
			info->offset = REG(DC_GPIO_DDC5_A);
		break;
		case GPIO_DDC_LINE_DDC_VGA:
			info->offset = REG(DC_GPIO_DDCVGA_A);
		break;
		case GPIO_DDC_LINE_I2C_PAD:
		default:
			ASSERT_CRITICAL(false);
			result = false;
		}
	break;
	case GPIO_ID_GENERIC:
		info->offset = REG(DC_GPIO_GENERIC_A);
		switch (en) {
		case GPIO_GENERIC_A:
			info->mask = DC_GPIO_GENERIC_A__DC_GPIO_GENERICA_A_MASK;
		break;
		case GPIO_GENERIC_B:
			info->mask = DC_GPIO_GENERIC_A__DC_GPIO_GENERICB_A_MASK;
		break;
		case GPIO_GENERIC_C:
			info->mask = DC_GPIO_GENERIC_A__DC_GPIO_GENERICC_A_MASK;
		break;
		case GPIO_GENERIC_D:
			info->mask = DC_GPIO_GENERIC_A__DC_GPIO_GENERICD_A_MASK;
		break;
		case GPIO_GENERIC_E:
			info->mask = DC_GPIO_GENERIC_A__DC_GPIO_GENERICE_A_MASK;
		break;
		case GPIO_GENERIC_F:
			info->mask = DC_GPIO_GENERIC_A__DC_GPIO_GENERICF_A_MASK;
		break;
		case GPIO_GENERIC_G:
			info->mask = DC_GPIO_GENERIC_A__DC_GPIO_GENERICG_A_MASK;
		break;
		default:
			ASSERT_CRITICAL(false);
			result = false;
		}
	break;
	case GPIO_ID_HPD:
		info->offset = REG(DC_GPIO_HPD_A);
		switch (en) {
		case GPIO_HPD_1:
			info->mask = DC_GPIO_HPD_A__DC_GPIO_HPD1_A_MASK;
		break;
		case GPIO_HPD_2:
			info->mask = DC_GPIO_HPD_A__DC_GPIO_HPD2_A_MASK;
		break;
		case GPIO_HPD_3:
			info->mask = DC_GPIO_HPD_A__DC_GPIO_HPD3_A_MASK;
		break;
		case GPIO_HPD_4:
			info->mask = DC_GPIO_HPD_A__DC_GPIO_HPD4_A_MASK;
		break;
		case GPIO_HPD_5:
			info->mask = DC_GPIO_HPD_A__DC_GPIO_HPD5_A_MASK;
		break;
		case GPIO_HPD_6:
			info->mask = DC_GPIO_HPD_A__DC_GPIO_HPD6_A_MASK;
		break;
		default:
			ASSERT_CRITICAL(false);
			result = false;
		}
	break;
	case GPIO_ID_GSL:
		switch (en) {
		case GPIO_GSL_GENLOCK_CLOCK:
				/*not implmented*/
			ASSERT_CRITICAL(false);
			result = false;
		break;
		case GPIO_GSL_GENLOCK_VSYNC:
			/*not implmented*/
			ASSERT_CRITICAL(false);
			result = false;
		break;
		case GPIO_GSL_SWAPLOCK_A:
			/*not implmented*/
			ASSERT_CRITICAL(false);
			result = false;
		break;
		case GPIO_GSL_SWAPLOCK_B:
			/*not implmented*/
			ASSERT_CRITICAL(false);
			result = false;

		break;
		default:
			ASSERT_CRITICAL(false);
			result = false;
		}
	break;
	case GPIO_ID_SYNC:
	case GPIO_ID_VIP_PAD:
	default:
		ASSERT_CRITICAL(false);
		result = false;
	}

	if (result) {
		info->offset_y = info->offset + 2;
		info->offset_en = info->offset + 1;
		info->offset_mask = info->offset - 1;

		info->mask_y = info->mask;
		info->mask_en = info->mask;
		info->mask_mask = info->mask;
	}

	return result;
}

/* function table */
static const struct hw_translate_funcs funcs = {
	.offset_to_id = offset_to_id,
	.id_to_offset = id_to_offset,
};

/*
 * dal_hw_translate_dcn30_init
 *
 * @brief
 * Initialize Hw translate function pointers.
 *
 * @param
 * struct hw_translate *tr - [out] struct of function pointers
 *
 */
void dal_hw_translate_dcn315_init(struct hw_translate *tr)
{
	tr->funcs = &funcs;
}