leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

mtd: spi-nor: Move Winbond bits out of core.c

Browse Source 
Create a SPI NOR manufacturer driver for Winbond chips, and move the
Winbond definitions outside of core.c.

Signed-off-by: Boris Brezillon <bbrezillon@kernel.org>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
This commit is contained in:
Boris Brezillon 2020-03-13 19:42:48 +00:00 committed by Tudor Ambarus
parent c53b3f92b4
commit 7b8b22010a
No known key found for this signature in database
GPG Key ID: 4B554F47A58D14E9
4 changed files with 115 additions and 114 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/mtd/spi-nor/Makefile
View File

@ -13,4 +13,5 @@ spi-nor-objs += macronix.o
spi-nor-objs += micron-st.o
spi-nor-objs += spansion.o
spi-nor-objs += sst.o
spi-nor-objs += winbond.o
obj-$(CONFIG_MTD_SPI_NOR) += spi-nor.o

115
drivers/mtd/spi-nor/core.c
View File

@ -465,38 +465,6 @@ int spi_nor_write_ear(struct spi_nor *nor, u8 ear)
return ret;
}
/**
* winbond_set_4byte_addr_mode() - Set 4-byte address mode for Winbond flashes.
* @nor: pointer to 'struct spi_nor'.
* @enable: true to enter the 4-byte address mode, false to exit the 4-byte
* address mode.
*
* Return: 0 on success, -errno otherwise.
*/
static int winbond_set_4byte_addr_mode(struct spi_nor *nor, bool enable)
{
int ret;
ret = spi_nor_set_4byte_addr_mode(nor, enable);
if (ret || enable)
return ret;
/*
* On Winbond W25Q256FV, leaving 4byte mode causes the Extended Address
* Register to be set to 1, so all 3-byte-address reads come from the
* second 16M. We must clear the register to enable normal behavior.
*/
ret = spi_nor_write_enable(nor);
if (ret)
return ret;
ret = spi_nor_write_ear(nor, 0);
if (ret)
return ret;
return spi_nor_write_disable(nor);
}
/**
* spi_nor_xread_sr() - Read the Status Register on S3AN flashes.
* @nor: pointer to 'struct spi_nor'.
@ -1995,73 +1963,6 @@ int spi_nor_sr2_bit7_quad_enable(struct spi_nor *nor)
* old entries may be missing 4K flag.
*/
static const struct flash_info spi_nor_ids[] = {
/* Winbond -- w25x "blocks" are 64K, "sectors" are 4KiB */
{ "w25x05", INFO(0xef3010, 0, 64 * 1024, 1, SECT_4K) },
{ "w25x10", INFO(0xef3011, 0, 64 * 1024, 2, SECT_4K) },
{ "w25x20", INFO(0xef3012, 0, 64 * 1024, 4, SECT_4K) },
{ "w25x40", INFO(0xef3013, 0, 64 * 1024, 8, SECT_4K) },
{ "w25x80", INFO(0xef3014, 0, 64 * 1024, 16, SECT_4K) },
{ "w25x16", INFO(0xef3015, 0, 64 * 1024, 32, SECT_4K) },
{
"w25q16dw", INFO(0xef6015, 0, 64 * 1024, 32,
SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
},
{ "w25x32", INFO(0xef3016, 0, 64 * 1024, 64, SECT_4K) },
{
"w25q16jv-im/jm", INFO(0xef7015, 0, 64 * 1024, 32,
SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
},
{ "w25q20cl", INFO(0xef4012, 0, 64 * 1024, 4, SECT_4K) },
{ "w25q20bw", INFO(0xef5012, 0, 64 * 1024, 4, SECT_4K) },
{ "w25q20ew", INFO(0xef6012, 0, 64 * 1024, 4, SECT_4K) },
{ "w25q32", INFO(0xef4016, 0, 64 * 1024, 64, SECT_4K) },
{
"w25q32dw", INFO(0xef6016, 0, 64 * 1024, 64,
SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
},
{
"w25q32jv", INFO(0xef7016, 0, 64 * 1024, 64,
SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
},
{
"w25q32jwm", INFO(0xef8016, 0, 64 * 1024, 64,
SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
},
{ "w25x64", INFO(0xef3017, 0, 64 * 1024, 128, SECT_4K) },
{ "w25q64", INFO(0xef4017, 0, 64 * 1024, 128, SECT_4K) },
{
"w25q64dw", INFO(0xef6017, 0, 64 * 1024, 128,
SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
},
{
"w25q128fw", INFO(0xef6018, 0, 64 * 1024, 256,
SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
},
{
"w25q128jv", INFO(0xef7018, 0, 64 * 1024, 256,
SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
},
{ "w25q80", INFO(0xef5014, 0, 64 * 1024, 16, SECT_4K) },
{ "w25q80bl", INFO(0xef4014, 0, 64 * 1024, 16, SECT_4K) },
{ "w25q128", INFO(0xef4018, 0, 64 * 1024, 256, SECT_4K) },
{ "w25q256", INFO(0xef4019, 0, 64 * 1024, 512,
SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
SPI_NOR_4B_OPCODES) },
{ "w25q256jvm", INFO(0xef7019, 0, 64 * 1024, 512,
SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
{ "w25q256jw", INFO(0xef6019, 0, 64 * 1024, 512,
SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
{ "w25m512jv", INFO(0xef7119, 0, 64 * 1024, 1024,
SECT_4K | SPI_NOR_QUAD_READ | SPI_NOR_DUAL_READ) },
/* Catalyst / On Semiconductor -- non-JEDEC */
{ "cat25c11", CAT25_INFO( 16, 8, 16, 1, SPI_NOR_NO_ERASE | SPI_NOR_NO_FR) },
{ "cat25c03", CAT25_INFO( 32, 8, 16, 2, SPI_NOR_NO_ERASE | SPI_NOR_NO_FR) },
@ -2096,6 +1997,7 @@ static const struct spi_nor_manufacturer *manufacturers[] = {
&spi_nor_st,
&spi_nor_spansion,
&spi_nor_sst,
&spi_nor_winbond,
};
static const struct flash_info *
@ -2789,11 +2691,6 @@ static int spi_nor_setup(struct spi_nor *nor,
return nor->params.setup(nor, hwcaps);
}
static void winbond_set_default_init(struct spi_nor *nor)
{
nor->params.set_4byte_addr_mode = winbond_set_4byte_addr_mode;
}
/**
* spi_nor_manufacturer_init_params() - Initialize the flash's parameters and
* settings based on MFR register and ->default_init() hook.
@ -2801,16 +2698,6 @@ static void winbond_set_default_init(struct spi_nor *nor)
*/
static void spi_nor_manufacturer_init_params(struct spi_nor *nor)
{
/* Init flash parameters based on MFR */
switch (JEDEC_MFR(nor->info)) {
case SNOR_MFR_WINBOND:
winbond_set_default_init(nor);
break;
default:
break;
}
if (nor->manufacturer && nor->manufacturer->fixups &&
nor->manufacturer->fixups->default_init)
nor->manufacturer->fixups->default_init(nor);

1
drivers/mtd/spi-nor/core.h
View File

@ -180,6 +180,7 @@ extern const struct spi_nor_manufacturer spi_nor_micron;
extern const struct spi_nor_manufacturer spi_nor_st;
extern const struct spi_nor_manufacturer spi_nor_spansion;
extern const struct spi_nor_manufacturer spi_nor_sst;
extern const struct spi_nor_manufacturer spi_nor_winbond;
int spi_nor_write_enable(struct spi_nor *nor);
int spi_nor_write_disable(struct spi_nor *nor);

112
drivers/mtd/spi-nor/winbond.c Normal file
View File

@ -0,0 +1,112 @@
// 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"
static const struct flash_info winbond_parts[] = {
/* Winbond -- w25x "blocks" are 64K, "sectors" are 4KiB */
{ "w25x05", INFO(0xef3010, 0, 64 * 1024, 1, SECT_4K) },
{ "w25x10", INFO(0xef3011, 0, 64 * 1024, 2, SECT_4K) },
{ "w25x20", INFO(0xef3012, 0, 64 * 1024, 4, SECT_4K) },
{ "w25x40", INFO(0xef3013, 0, 64 * 1024, 8, SECT_4K) },
{ "w25x80", INFO(0xef3014, 0, 64 * 1024, 16, SECT_4K) },
{ "w25x16", INFO(0xef3015, 0, 64 * 1024, 32, SECT_4K) },
{ "w25q16dw", INFO(0xef6015, 0, 64 * 1024, 32,
SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) },
{ "w25x32", INFO(0xef3016, 0, 64 * 1024, 64, SECT_4K) },
{ "w25q16jv-im/jm", INFO(0xef7015, 0, 64 * 1024, 32,
SECT_4K | SPI_NOR_DUAL_READ |
SPI_NOR_QUAD_READ | SPI_NOR_HAS_LOCK |
SPI_NOR_HAS_TB) },
{ "w25q20cl", INFO(0xef4012, 0, 64 * 1024, 4, SECT_4K) },
{ "w25q20bw", INFO(0xef5012, 0, 64 * 1024, 4, SECT_4K) },
{ "w25q20ew", INFO(0xef6012, 0, 64 * 1024, 4, SECT_4K) },
{ "w25q32", INFO(0xef4016, 0, 64 * 1024, 64, SECT_4K) },
{ "w25q32dw", INFO(0xef6016, 0, 64 * 1024, 64,
SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) },
{ "w25q32jv", INFO(0xef7016, 0, 64 * 1024, 64,
SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
},
{ "w25q32jwm", INFO(0xef8016, 0, 64 * 1024, 64,
SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) },
{ "w25x64", INFO(0xef3017, 0, 64 * 1024, 128, SECT_4K) },
{ "w25q64", INFO(0xef4017, 0, 64 * 1024, 128, SECT_4K) },
{ "w25q64dw", INFO(0xef6017, 0, 64 * 1024, 128,
SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) },
{ "w25q128fw", INFO(0xef6018, 0, 64 * 1024, 256,
SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) },
{ "w25q128jv", INFO(0xef7018, 0, 64 * 1024, 256,
SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB) },
{ "w25q80", INFO(0xef5014, 0, 64 * 1024, 16, SECT_4K) },
{ "w25q80bl", INFO(0xef4014, 0, 64 * 1024, 16, SECT_4K) },
{ "w25q128", INFO(0xef4018, 0, 64 * 1024, 256, SECT_4K) },
{ "w25q256", INFO(0xef4019, 0, 64 * 1024, 512,
SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
SPI_NOR_4B_OPCODES) },
{ "w25q256jvm", INFO(0xef7019, 0, 64 * 1024, 512,
SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
{ "w25q256jw", INFO(0xef6019, 0, 64 * 1024, 512,
SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
{ "w25m512jv", INFO(0xef7119, 0, 64 * 1024, 1024,
SECT_4K | SPI_NOR_QUAD_READ | SPI_NOR_DUAL_READ) },
};
/**
* winbond_set_4byte_addr_mode() - Set 4-byte address mode for Winbond flashes.
* @nor: pointer to 'struct spi_nor'.
* @enable: true to enter the 4-byte address mode, false to exit the 4-byte
* address mode.
*
* Return: 0 on success, -errno otherwise.
*/
static int winbond_set_4byte_addr_mode(struct spi_nor *nor, bool enable)
{
int ret;
ret = spi_nor_set_4byte_addr_mode(nor, enable);
if (ret || enable)
return ret;
/*
* On Winbond W25Q256FV, leaving 4byte mode causes the Extended Address
* Register to be set to 1, so all 3-byte-address reads come from the
* second 16M. We must clear the register to enable normal behavior.
*/
ret = spi_nor_write_enable(nor);
if (ret)
return ret;
ret = spi_nor_write_ear(nor, 0);
if (ret)
return ret;
return spi_nor_write_disable(nor);
}
static void winbond_default_init(struct spi_nor *nor)
{
nor->params.set_4byte_addr_mode = winbond_set_4byte_addr_mode;
}
static const struct spi_nor_fixups winbond_fixups = {
.default_init = winbond_default_init,
};
const struct spi_nor_manufacturer spi_nor_winbond = {
.name = "winbond",
.parts = winbond_parts,
.nparts = ARRAY_SIZE(winbond_parts),
.fixups = &winbond_fixups,
};