// SPDX-License-Identifier: GPL-2.0
/*
* Copyright ( C ) 2005 , Intec Automation Inc .
* Copyright ( C ) 2014 , Freescale Semiconductor , Inc .
*/
#include <linux/mtd/spi-nor.h>
#include "core.h"
#define MXIC_NOR_OP_RD_CR2 0 x71 /* Read configuration register 2 opcode */
#define MXIC_NOR_OP_WR_CR2 0 x72 /* Write configuration register 2 opcode */
#define MXIC_NOR_ADDR_CR2_MODE 0 x00000000 /* CR2 address for setting spi/sopi/dopi mode */
#define MXIC_NOR_ADDR_CR2_DC 0 x00000300 /* CR2 address for setting dummy cycles */
#define MXIC_NOR_REG_DOPI_EN 0 x2 /* Enable Octal DTR */
#define MXIC_NOR_REG_SPI_EN 0 x0 /* Enable SPI */
/* Convert dummy cycles to bit pattern */
#define MXIC_NOR_REG_DC(p) \
((20 - (p)) >> 1 )
#define MXIC_NOR_WR_CR2(addr, ndata, buf) \
SPI_MEM_OP(SPI_MEM_OP_CMD(MXIC_NOR_OP_WR_CR2, 0 ), \
SPI_MEM_OP_ADDR(4 , addr, 0 ), \
SPI_MEM_OP_NO_DUMMY, \
SPI_MEM_OP_DATA_OUT(ndata, buf, 0 ))
static int
mx25l25635_post_bfpt_fixups(struct spi_nor *nor,
const struct sfdp_parameter_header *bfpt_header,
const struct sfdp_bfpt *bfpt)
{
/*
* MX25L25635F supports 4 B opcodes but MX25L25635E does not .
* Unfortunately , Macronix has re - used the same JEDEC ID for both
* variants which prevents us from defining a new entry in the parts
* table .
* We need a way to differentiate MX25L25635E and MX25L25635F , and it
* seems that the F version advertises support for Fast Read 4 - 4 - 4 in
* its BFPT table .
*/
if (bfpt->dwords[SFDP_DWORD(5 )] & BFPT_DWORD5_FAST_READ_4_4_4)
nor->flags |= SNOR_F_4B_OPCODES;
return 0 ;
}
static int
macronix_qpp4b_post_sfdp_fixups(struct spi_nor *nor)
{
/* PP_1_1_4_4B is supported but missing in 4BAIT. */
struct spi_nor_flash_parameter *params = nor->params;
params->hwcaps.mask |= SNOR_HWCAPS_PP_1_1_4;
spi_nor_set_pp_settings(¶ms->page_programs[SNOR_CMD_PP_1_1_4],
SPINOR_OP_PP_1_1_4_4B, SNOR_PROTO_1_1_4);
return 0 ;
}
static int
mx25l3255e_late_init_fixups(struct spi_nor *nor)
{
struct spi_nor_flash_parameter *params = nor->params;
/*
* SFDP of MX25L3255E is JESD216 , which does not include the Quad
* Enable bit Requirement in BFPT . As a result , during BFPT parsing ,
* the quad_enable method is not set to spi_nor_sr1_bit6_quad_enable .
* Therefore , it is necessary to correct this setting by late_init .
*/
params->quad_enable = spi_nor_sr1_bit6_quad_enable;
/*
* In addition , MX25L3255E also supports 1 - 4 - 4 page program in 3 - byte
* address mode . However , since the 3 - byte address 1 - 4 - 4 page program
* is not defined in SFDP , it needs to be configured in late_init .
*/
params->hwcaps.mask |= SNOR_HWCAPS_PP_1_4_4;
spi_nor_set_pp_settings(¶ms->page_programs[SNOR_CMD_PP_1_4_4],
SPINOR_OP_PP_1_4_4, SNOR_PROTO_1_4_4);
return 0 ;
}
static const struct spi_nor_fixups mx25l25635_fixups = {
.post_bfpt = mx25l25635_post_bfpt_fixups,
.post_sfdp = macronix_qpp4b_post_sfdp_fixups,
};
static const struct spi_nor_fixups macronix_qpp4b_fixups = {
.post_sfdp = macronix_qpp4b_post_sfdp_fixups,
};
static const struct spi_nor_fixups mx25l3255e_fixups = {
.late_init = mx25l3255e_late_init_fixups,
};
static const struct flash_info macronix_nor_parts[] = {
{
.id = SNOR_ID(0 xc2, 0 x20, 0 x10),
.name = "mx25l512e" ,
.size = SZ_64K,
.no_sfdp_flags = SECT_4K,
}, {
.id = SNOR_ID(0 xc2, 0 x20, 0 x12),
.name = "mx25l2005a" ,
.size = SZ_256K,
.no_sfdp_flags = SECT_4K,
}, {
.id = SNOR_ID(0 xc2, 0 x20, 0 x13),
.name = "mx25l4005a" ,
.size = SZ_512K,
.no_sfdp_flags = SECT_4K,
}, {
.id = SNOR_ID(0 xc2, 0 x20, 0 x14),
.name = "mx25l8005" ,
.size = SZ_1M,
}, {
/* MX25L1606E */
.id = SNOR_ID(0 xc2, 0 x20, 0 x15),
}, {
.id = SNOR_ID(0 xc2, 0 x20, 0 x16),
.name = "mx25l3205d" ,
.size = SZ_4M,
.no_sfdp_flags = SECT_4K,
}, {
.id = SNOR_ID(0 xc2, 0 x20, 0 x17),
.name = "mx25l6405d" ,
.size = SZ_8M,
.no_sfdp_flags = SECT_4K,
}, {
/* MX25L12805D */
.id = SNOR_ID(0 xc2, 0 x20, 0 x18),
.flags = SPI_NOR_HAS_LOCK | SPI_NOR_4BIT_BP,
}, {
/* MX25L25635E, MX25L25645G */
.id = SNOR_ID(0 xc2, 0 x20, 0 x19),
.fixups = &mx25l25635_fixups
}, {
/* MX66L51235F */
.id = SNOR_ID(0 xc2, 0 x20, 0 x1a),
.fixup_flags = SPI_NOR_4B_OPCODES,
.fixups = ¯onix_qpp4b_fixups,
}, {
/* MX66L1G45G */
.id = SNOR_ID(0 xc2, 0 x20, 0 x1b),
.fixups = ¯onix_qpp4b_fixups,
}, {
/* MX66L2G45G */
.id = SNOR_ID(0 xc2, 0 x20, 0 x1c),
.fixups = ¯onix_qpp4b_fixups,
}, {
.id = SNOR_ID(0 xc2, 0 x23, 0 x14),
.name = "mx25v8035f" ,
.size = SZ_1M,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
.id = SNOR_ID(0 xc2, 0 x25, 0 x32),
.name = "mx25u2033e" ,
.size = SZ_256K,
.no_sfdp_flags = SECT_4K,
}, {
.id = SNOR_ID(0 xc2, 0 x25, 0 x33),
.name = "mx25u4035" ,
.size = SZ_512K,
.no_sfdp_flags = SECT_4K,
}, {
.id = SNOR_ID(0 xc2, 0 x25, 0 x34),
.name = "mx25u8035" ,
.size = SZ_1M,
.no_sfdp_flags = SECT_4K,
}, {
.id = SNOR_ID(0 xc2, 0 x25, 0 x36),
.name = "mx25u3235f" ,
.size = SZ_4M,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
.id = SNOR_ID(0 xc2, 0 x25, 0 x37),
.name = "mx25u6435f" ,
.size = SZ_8M,
.no_sfdp_flags = SECT_4K,
}, {
.id = SNOR_ID(0 xc2, 0 x25, 0 x38),
.name = "mx25u12835f" ,
.size = SZ_16M,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
/* MX25U51245G */
.id = SNOR_ID(0 xc2, 0 x25, 0 x3a),
.fixups = ¯onix_qpp4b_fixups,
}, {
/* MX66U1G45G */
.id = SNOR_ID(0 xc2, 0 x25, 0 x3b),
.fixups = ¯onix_qpp4b_fixups,
}, {
/* MX66U2G45G */
.id = SNOR_ID(0 xc2, 0 x25, 0 x3c),
.fixups = ¯onix_qpp4b_fixups,
}, {
.id = SNOR_ID(0 xc2, 0 x26, 0 x18),
.name = "mx25l12855e" ,
.size = SZ_16M,
}, {
.id = SNOR_ID(0 xc2, 0 x26, 0 x19),
.name = "mx25l25655e" ,
.size = SZ_32M,
}, {
.id = SNOR_ID(0 xc2, 0 x26, 0 x1b),
.name = "mx66l1g55g" ,
.size = SZ_128M,
.no_sfdp_flags = SPI_NOR_QUAD_READ,
}, {
.id = SNOR_ID(0 xc2, 0 x28, 0 x15),
.name = "mx25r1635f" ,
.size = SZ_2M,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
.id = SNOR_ID(0 xc2, 0 x28, 0 x16),
.name = "mx25r3235f" ,
.size = SZ_4M,
.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
}, {
/* MX25UW51245G */
.id = SNOR_ID(0 xc2, 0 x81, 0 x3a),
.n_banks = 4 ,
.flags = SPI_NOR_RWW,
}, {
/* MX25L3255E */
.id = SNOR_ID(0 xc2, 0 x9e, 0 x16),
.fixups = &mx25l3255e_fixups,
},
/*
* This spares us of adding new flash entries for flashes that can be
* initialized solely based on the SFDP data , but still need the
* manufacturer hooks to set parameters that can ' t be discovered at SFDP
* parsing time .
*/
{ .id = SNOR_ID(0 xc2) }
};
static int macronix_nor_octal_dtr_en(struct spi_nor *nor)
{
struct spi_mem_op op;
u8 *buf = nor->bouncebuf, i;
int ret;
/* Use dummy cycles which is parse by SFDP and convert to bit pattern. */
buf[0 ] = MXIC_NOR_REG_DC(nor->params->reads[SNOR_CMD_READ_8_8_8_DTR].num_wait_states);
op = (struct spi_mem_op)MXIC_NOR_WR_CR2(MXIC_NOR_ADDR_CR2_DC, 1 , buf);
ret = spi_nor_write_any_volatile_reg(nor, &op, nor->reg_proto);
if (ret)
return ret;
/* Set the octal and DTR enable bits. */
buf[0 ] = MXIC_NOR_REG_DOPI_EN;
op = (struct spi_mem_op)MXIC_NOR_WR_CR2(MXIC_NOR_ADDR_CR2_MODE, 1 , buf);
ret = spi_nor_write_any_volatile_reg(nor, &op, nor->reg_proto);
if (ret)
return ret;
/* Read flash ID to make sure the switch was successful. */
ret = spi_nor_read_id(nor, nor->addr_nbytes, 4 , buf,
SNOR_PROTO_8_8_8_DTR);
if (ret) {
dev_dbg(nor->dev, "error %d reading JEDEC ID after enabling 8D-8D-8D mode\n" , ret);
return ret;
}
/* Macronix SPI-NOR flash 8D-8D-8D read ID would get 6 bytes data A-A-B-B-C-C */
for (i = 0 ; i < nor->info->id->len; i++)
if (buf[i * 2 ] != buf[(i * 2 ) + 1 ] || buf[i * 2 ] != nor->info->id->bytes[i])
return -EINVAL;
return 0 ;
}
static int macronix_nor_octal_dtr_dis(struct spi_nor *nor)
{
struct spi_mem_op op;
u8 *buf = nor->bouncebuf;
int ret;
/*
* The register is 1 - byte wide , but 1 - byte transactions are not
* allowed in 8 D - 8 D - 8 D mode . Since there is no register at the
* next location , just initialize the value to 0 and let the
* transaction go on .
*/
buf[0 ] = MXIC_NOR_REG_SPI_EN;
buf[1 ] = 0 x0;
op = (struct spi_mem_op)MXIC_NOR_WR_CR2(MXIC_NOR_ADDR_CR2_MODE, 2 , buf);
ret = spi_nor_write_any_volatile_reg(nor, &op, SNOR_PROTO_8_8_8_DTR);
if (ret)
return ret;
/* Read flash ID to make sure the switch was successful. */
ret = spi_nor_read_id(nor, 0 , 0 , buf, SNOR_PROTO_1_1_1);
if (ret) {
dev_dbg(nor->dev, "error %d reading JEDEC ID after disabling 8D-8D-8D mode\n" , ret);
return ret;
}
if (memcmp(buf, nor->info->id->bytes, nor->info->id->len))
return -EINVAL;
return 0 ;
}
static int macronix_nor_set_octal_dtr(struct spi_nor *nor, bool enable)
{
return enable ? macronix_nor_octal_dtr_en(nor) : macronix_nor_octal_dtr_dis(nor);
}
static void macronix_nor_default_init(struct spi_nor *nor)
{
nor->params->quad_enable = spi_nor_sr1_bit6_quad_enable;
}
static int macronix_nor_late_init(struct spi_nor *nor)
{
if (!nor->params->set_4byte_addr_mode)
nor->params->set_4byte_addr_mode = spi_nor_set_4byte_addr_mode_en4b_ex4b;
nor->params->set_octal_dtr = macronix_nor_set_octal_dtr;
return 0 ;
}
static const struct spi_nor_fixups macronix_nor_fixups = {
.default_init = macronix_nor_default_init,
.late_init = macronix_nor_late_init,
};
const struct spi_nor_manufacturer spi_nor_macronix = {
.name = "macronix" ,
.parts = macronix_nor_parts,
.nparts = ARRAY_SIZE(macronix_nor_parts),
.fixups = ¯onix_nor_fixups,
};
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