adesto.c

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/* SPDX-License-Identifier: GPL-2.0-or-later */
 
/*
 * Driver for Adesto Technologies SPI flash
 * based on winbond.c
 */
 
#include <commonlib/helpers.h>
#include <spi_flash.h>
#include <spi-generic.h>
 
#include "spi_flash_internal.h"
 
/* at25dfxx-specific commands */
#define CMD_AT25DF_WREN         0x06    /* Write Enable */
#define CMD_AT25DF_WRDI         0x04    /* Write Disable */
#define CMD_AT25DF_RDSR         0x05    /* Read Status Register */
#define CMD_AT25DF_WRSR         0x01    /* Write Status Register */
#define CMD_AT25DF_READ         0x03    /* Read Data Bytes */
#define CMD_AT25DF_FAST_READ    0x0b    /* Read Data Bytes at Higher Speed */
#define CMD_AT25DF_PP           0x02    /* Page Program */
#define CMD_AT25DF_SE           0x20    /* Sector (4K) Erase */
#define CMD_AT25DF_BE           0xd8    /* Block (64K) Erase */
#define CMD_AT25DF_CE           0xc7    /* Chip Erase */
#define CMD_AT25DF_DP           0xb9    /* Deep Power-down */
#define CMD_AT25DF_RES          0xab    /* Release from DP, and Read Signature */
 
static const struct spi_flash_part_id flash_table[] = {
        {
                /* AT25SL128A */
                .id[0]                  = 0x4218,
                .nr_sectors_shift       = 12,
        },
        {
                /* AT25DF081A Yes, 81A id < 81 */
                .id[0]                  = 0x4501,
                .nr_sectors_shift       = 8,
        },
        {
                /* AT25DF081 */
                .id[0]                  = 0x4502,
                .nr_sectors_shift       = 8,
        },
        {
                /* AT25DF161 */
                .id[0]                  = 0x4602,
                .nr_sectors_shift       = 9,
        },
        {
                /* AT25DL161 */
                .id[0]                  = 0x4603,
                .nr_sectors_shift       = 9,
        },
        {
                /* AT25DF321 */
                .id[0]                  = 0x4700,
                .nr_sectors_shift       = 10,
        },
        {
                /* AT25DF321A */
                .id[0]                  = 0x4701,
                .nr_sectors_shift       = 10,
        },
        {
                /* AT25DF641 */
                .id[0]                  = 0x4800,
                .nr_sectors_shift       = 11,
        },
        {
                /* AT25SF081 */
                .id[0]                  = 0x8501,
                .nr_sectors_shift       = 8,
        },
        {
                /* AT25DQ161 */
                .id[0]                  = 0x8600,
                .nr_sectors_shift       = 9,
        },
        {
                /* AT25SF161 */
                .id[0]                  = 0x8601,
                .nr_sectors_shift       = 9,
        },
        {
                /* AT25DQ321 */
                .id[0]                  = 0x8700,
                .nr_sectors_shift       = 10,
        },
};
 
const struct spi_flash_vendor_info spi_flash_adesto_vi = {
        .id = VENDOR_ID_ADESTO,
        .page_size_shift = 8,
        .sector_size_kib_shift = 2,
        .match_id_mask[0] = 0xffff,
        .ids = flash_table,
        .nr_part_ids = ARRAY_SIZE(flash_table),
        .desc = &spi_flash_pp_0x20_sector_desc,
};