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rcar_gen3: drivers: board identification 

Signed-off-by: ldts <jramirez@baylibre.com>
This commit is contained in:
Jorge Ramirez-Ortiz 2018-09-23 09:39:11 +02:00 committed by ldts
parent 0cdb86d41d
commit 070b0f0821
2 changed files with 123 additions and 0 deletions
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88
drivers/renesas/rcar/board/board.c Normal file
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/*
* Copyright (c) 2015-2018, Renesas Electronics Corporation. All rights
* reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stdint.h>
#include <iic_dvfs.h>
#include "board.h"
#include "utils_def.h"
#ifndef BOARD_DEFAULT
#if (RCAR_LSI == RCAR_E3)
#define BOARD_DEFAULT (BOARD_EBISU << BOARD_CODE_SHIFT)
#else
#define BOARD_DEFAULT (BOARD_SALVATOR_X << BOARD_CODE_SHIFT)
#endif
#endif
#define BOARD_CODE_MASK (0xF8)
#define BOARD_REV_MASK (0x07)
#define BOARD_CODE_SHIFT (0x03)
#define BOARD_ID_UNKNOWN (0xFF)
#define SXS_ID { 0x10U, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU }
#define SX_ID { 0x10U, 0x11U, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU }
#define SKP_ID { 0x10U, 0x10U, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU }
#define SK_ID { 0x10U, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU }
#define EB4_ID { 0x10U, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU }
#define EB_ID { 0x10U, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU }
#define KK_ID { 0x10U, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU, 0xFFU }
const char *g_board_tbl[] = {
[BOARD_STARTER_KIT_PRE] = "Starter Kit Premier",
[BOARD_STARTER_KIT] = "Starter Kit",
[BOARD_SALVATOR_XS] = "Salvator-XS",
[BOARD_SALVATOR_X] = "Salvator-X",
[BOARD_EBISU_4D] = "Ebisu-4D",
[BOARD_KRIEK] = "Kriek",
[BOARD_EBISU] = "Ebisu",
[BOARD_UNKNOWN] = "unknown"
};
int32_t rcar_get_board_type(uint32_t *type, uint32_t *rev)
{
int32_t ret = 0;
const uint8_t board_tbl[][8] = {
[BOARD_STARTER_KIT_PRE] = SKP_ID,
[BOARD_SALVATOR_XS] = SXS_ID,
[BOARD_STARTER_KIT] = SK_ID,
[BOARD_SALVATOR_X] = SX_ID,
[BOARD_EBISU_4D] = EB4_ID,
[BOARD_EBISU] = EB_ID,
[BOARD_KRIEK] = KK_ID,
};
static uint8_t board_id = BOARD_ID_UNKNOWN;
if (board_id != BOARD_ID_UNKNOWN)
goto get_type;
#if PMIC_ROHM_BD9571
/* Board ID detection from EEPROM */
ret = rcar_iic_dvfs_receive(EEPROM, BOARD_ID, &board_id);
if (ret) {
board_id = BOARD_ID_UNKNOWN;
goto get_type;
}
if (board_id == BOARD_ID_UNKNOWN)
board_id = BOARD_DEFAULT;
#else
board_id = BOARD_DEFAULT;
#endif
get_type:
*type = ((uint32_t) board_id & BOARD_CODE_MASK) >> BOARD_CODE_SHIFT;
if (*type >= ARRAY_SIZE(board_tbl)) {
/* no revision information, set Rev0.0. */
*rev = 0;
return ret;
}
*rev = board_tbl[*type][(uint8_t) (board_id & BOARD_REV_MASK)];
return ret;
}

35
drivers/renesas/rcar/board/board.h Normal file
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/*
* Copyright (c) 2015-2018, Renesas Electronics Corporation. All rights
* reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef BOARD_H_
#define BOARD_H_
#define BOARD_SALVATOR_X (0x00)
#define BOARD_KRIEK (0x01)
#define BOARD_STARTER_KIT (0x02)
#define BOARD_SALVATOR_XS (0x04)
#define BOARD_EBISU (0x08)
#define BOARD_STARTER_KIT_PRE (0x0B)
#define BOARD_EBISU_4D (0x0DU)
#define BOARD_UNKNOWN (BOARD_EBISU_4D + 1U)
#define BOARD_REV_UNKNOWN (0xFF)
extern const char *g_board_tbl[];
/************************************************************************
* Revisions are expressed in 8 bits.
* The upper 4 bits are major version.
* The lower 4 bits are minor version.
************************************************************************/
#define GET_BOARD_MAJOR(a) ((uint32_t)(a) >> 0x4)
#define GET_BOARD_MINOR(a) ((uint32_t)(a) & 0xF)
#define GET_BOARD_NAME(a) (g_board_tbl[(a)])
int32_t rcar_get_board_type(uint32_t *type, uint32_t *rev);
#endif