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sf: probe: Add support for SST_WP

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Most of the SST flashes needs to write up using SST_WP, AAI
Word Program, so added a flag param on spi_flash_params table.

SST flashes, which supports SST_WP need to use a WP write
sst_write_wp instead of common flash write.

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
This commit is contained in:
Jagannadha Sutradharudu Teki 2013-10-02 19:34:53 +05:30
parent b7797422e3
commit 10ca45d005
4 changed files with 188 additions and 77 deletions
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5
drivers/mtd/spi/spi_flash_internal.h
View File

@ -75,6 +75,11 @@ int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len,
int spi_flash_cmd_write_multi(struct spi_flash *flash, u32 offset,
size_t len, const void *buf);
#ifdef CONFIG_SPI_FLASH_SST
int sst_write_wp(struct spi_flash *flash, u32 offset, size_t len,
const void *buf);
#endif
/*
* Enable writing on the SPI flash.
*/

93
drivers/mtd/spi/spi_flash_ops.c
View File

@ -312,3 +312,96 @@ int spi_flash_cmd_read_fast(struct spi_flash *flash, u32 offset,
return ret;
}
#ifdef CONFIG_SPI_FLASH_SST
static int sst_byte_write(struct spi_flash *flash, u32 offset, const void *buf)
{
int ret;
u8 cmd[4] = {
CMD_SST_BP,
offset >> 16,
offset >> 8,
offset,
};
debug("BP[%02x]: 0x%p => cmd = { 0x%02x 0x%06x }\n",
spi_w8r8(flash->spi, CMD_READ_STATUS), buf, cmd[0], offset);
ret = spi_flash_cmd_write_enable(flash);
if (ret)
return ret;
ret = spi_flash_cmd_write(flash->spi, cmd, sizeof(cmd), buf, 1);
if (ret)
return ret;
return spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
}
int sst_write_wp(struct spi_flash *flash, u32 offset, size_t len,
const void *buf)
{
size_t actual, cmd_len;
int ret;
u8 cmd[4];
ret = spi_claim_bus(flash->spi);
if (ret) {
debug("SF: Unable to claim SPI bus\n");
return ret;
}
/* If the data is not word aligned, write out leading single byte */
actual = offset % 2;
if (actual) {
ret = sst_byte_write(flash, offset, buf);
if (ret)
goto done;
}
offset += actual;
ret = spi_flash_cmd_write_enable(flash);
if (ret)
goto done;
cmd_len = 4;
cmd[0] = CMD_SST_AAI_WP;
cmd[1] = offset >> 16;
cmd[2] = offset >> 8;
cmd[3] = offset;
for (; actual < len - 1; actual += 2) {
debug("WP[%02x]: 0x%p => cmd = { 0x%02x 0x%06x }\n",
spi_w8r8(flash->spi, CMD_READ_STATUS), buf + actual,
cmd[0], offset);
ret = spi_flash_cmd_write(flash->spi, cmd, cmd_len,
buf + actual, 2);
if (ret) {
debug("SF: sst word program failed\n");
break;
}
ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
if (ret)
break;
cmd_len = 1;
offset += 2;
}
if (!ret)
ret = spi_flash_cmd_write_disable(flash);
/* If there is a single trailing byte, write it out */
if (!ret && actual != len)
ret = sst_byte_write(flash, offset, buf + actual);
done:
debug("SF: sst: program %s %zu bytes @ 0x%zx\n",
ret ? "failure" : "success", len, offset - actual);
spi_release_bus(flash->spi);
return ret;
}
#endif

160
drivers/mtd/spi/spi_flash_probe.c
View File

@ -26,6 +26,7 @@ DECLARE_GLOBAL_DATA_PTR;
* @ext_jedec: Device ext_jedec ID
* @sector_size: Sector size of this device
* @nr_sectors: No.of sectors on this device
* @flags: Importent param, for flash specific behaviour
*/
struct spi_flash_params {
const char *name;
@ -33,101 +34,102 @@ struct spi_flash_params {
u16 ext_jedec;
u32 sector_size;
u32 nr_sectors;
u16 flags;
};
static const struct spi_flash_params spi_flash_params_table[] = {
#ifdef CONFIG_SPI_FLASH_ATMEL /* ATMEL */
{"AT45DB011D", 0x1f2200, 0x0, 64 * 1024, 4},
{"AT45DB021D", 0x1f2300, 0x0, 64 * 1024, 8},
{"AT45DB041D", 0x1f2400, 0x0, 64 * 1024, 8},
{"AT45DB081D", 0x1f2500, 0x0, 64 * 1024, 16},
{"AT45DB161D", 0x1f2600, 0x0, 64 * 1024, 32},
{"AT45DB321D", 0x1f2700, 0x0, 64 * 1024, 64},
{"AT45DB641D", 0x1f2800, 0x0, 64 * 1024, 128},
{"AT45DB011D", 0x1f2200, 0x0, 64 * 1024, 4, 0},
{"AT45DB021D", 0x1f2300, 0x0, 64 * 1024, 8, 0},
{"AT45DB041D", 0x1f2400, 0x0, 64 * 1024, 8, 0},
{"AT45DB081D", 0x1f2500, 0x0, 64 * 1024, 16, 0},
{"AT45DB161D", 0x1f2600, 0x0, 64 * 1024, 32, 0},
{"AT45DB321D", 0x1f2700, 0x0, 64 * 1024, 64, 0},
{"AT45DB641D", 0x1f2800, 0x0, 64 * 1024, 128, 0},
#endif
#ifdef CONFIG_SPI_FLASH_EON /* EON */
{"EN25Q32B", 0x1c3016, 0x0, 64 * 1024, 64},
{"EN25Q128B", 0x1c3018, 0x0, 64 * 1024, 256},
{"EN25Q32B", 0x1c3016, 0x0, 64 * 1024, 64, 0},
{"EN25Q128B", 0x1c3018, 0x0, 64 * 1024, 256, 0},
#endif
#ifdef CONFIG_SPI_FLASH_GIGADEVICE /* GIGADEVICE */
{"GD25Q64B", 0xc84017, 0x0, 64 * 1024, 128},
{"GD25LQ32", 0xc86016, 0x0, 64 * 1024, 64},
{"GD25Q64B", 0xc84017, 0x0, 64 * 1024, 128, 0},
{"GD25LQ32", 0xc86016, 0x0, 64 * 1024, 64, 0},
#endif
#ifdef CONFIG_SPI_FLASH_MACRONIX /* MACRONIX */
{"MX25L4005", 0xc22013, 0x0, 64 * 1024, 8},
{"MX25L8005", 0xc22014, 0x0, 64 * 1024, 16},
{"MX25L1605D", 0xc22015, 0x0, 64 * 1024, 32},
{"MX25L3205D", 0xc22016, 0x0, 64 * 1024, 64},
{"MX25L6405D", 0xc22017, 0x0, 64 * 1024, 128},
{"MX25L12805", 0xc22018, 0x0, 64 * 1024, 256},
{"MX25L12855E", 0xc22618, 0x0, 64 * 1024, 256},
{"MX25L4005", 0xc22013, 0x0, 64 * 1024, 8, 0},
{"MX25L8005", 0xc22014, 0x0, 64 * 1024, 16, 0},
{"MX25L1605D", 0xc22015, 0x0, 64 * 1024, 32, 0},
{"MX25L3205D", 0xc22016, 0x0, 64 * 1024, 64, 0},
{"MX25L6405D", 0xc22017, 0x0, 64 * 1024, 128, 0},
{"MX25L12805", 0xc22018, 0x0, 64 * 1024, 256, 0},
{"MX25L12855E", 0xc22618, 0x0, 64 * 1024, 256, 0},
#endif
#ifdef CONFIG_SPI_FLASH_SPANSION /* SPANSION */
{"S25FL008A", 0x010213, 0x0, 64 * 1024, 16},
{"S25FL016A", 0x010214, 0x0, 64 * 1024, 32},
{"S25FL032A", 0x010215, 0x0, 64 * 1024, 64},
{"S25FL064A", 0x010216, 0x0, 64 * 1024, 128},
{"S25FL128P_256K", 0x012018, 0x0300, 256 * 1024, 64},
{"S25FL128P_64K", 0x012018, 0x0301, 64 * 1024, 256},
{"S25FL032P", 0x010215, 0x4d00, 64 * 1024, 64},
{"S25FL064P", 0x010216, 0x4d00, 64 * 1024, 128},
{"S25FL128S_64K", 0x012018, 0x4d01, 64 * 1024, 256},
{"S25FL256S_64K", 0x010219, 0x4d01, 64 * 1024, 512},
{"S25FL512S_64K", 0x010220, 0x4d01, 64 * 1024, 1024},
{"S25FL008A", 0x010213, 0x0, 64 * 1024, 16, 0},
{"S25FL016A", 0x010214, 0x0, 64 * 1024, 32, 0},
{"S25FL032A", 0x010215, 0x0, 64 * 1024, 64, 0},
{"S25FL064A", 0x010216, 0x0, 64 * 1024, 128, 0},
{"S25FL128P_256K", 0x012018, 0x0300, 256 * 1024, 64, 0},
{"S25FL128P_64K", 0x012018, 0x0301, 64 * 1024, 256, 0},
{"S25FL032P", 0x010215, 0x4d00, 64 * 1024, 64, 0},
{"S25FL064P", 0x010216, 0x4d00, 64 * 1024, 128, 0},
{"S25FL128S_64K", 0x012018, 0x4d01, 64 * 1024, 256, 0},
{"S25FL256S_64K", 0x010219, 0x4d01, 64 * 1024, 512, 0},
{"S25FL512S_64K", 0x010220, 0x4d01, 64 * 1024, 1024, 0},
#endif
#ifdef CONFIG_SPI_FLASH_STMICRO /* STMICRO */
{"M25P10", 0x202011, 0x0, 32 * 1024, 4},
{"M25P20", 0x202012, 0x0, 64 * 1024, 4},
{"M25P40", 0x202013, 0x0, 64 * 1024, 8},
{"M25P80", 0x202014, 0x0, 64 * 1024, 16},
{"M25P16", 0x202015, 0x0, 64 * 1024, 32},
{"M25P32", 0x202016, 0x0, 64 * 1024, 64},
{"M25P64", 0x202017, 0x0, 64 * 1024, 128},
{"M25P128", 0x202018, 0x0, 256 * 1024, 64},
{"N25Q32", 0x20ba16, 0x0, 64 * 1024, 64},
{"N25Q32A", 0x20bb16, 0x0, 64 * 1024, 64},
{"N25Q64", 0x20ba17, 0x0, 64 * 1024, 128},
{"N25Q64A", 0x20bb17, 0x0, 64 * 1024, 128},
{"N25Q128", 0x20ba18, 0x0, 64 * 1024, 256},
{"N25Q128A", 0x20bb18, 0x0, 64 * 1024, 256},
{"N25Q256", 0x20ba19, 0x0, 64 * 1024, 512},
{"N25Q256A", 0x20bb19, 0x0, 64 * 1024, 512},
{"N25Q512", 0x20ba20, 0x0, 64 * 1024, 1024},
{"N25Q512A", 0x20bb20, 0x0, 64 * 1024, 1024},
{"N25Q1024", 0x20ba21, 0x0, 64 * 1024, 2048},
{"N25Q1024A", 0x20bb21, 0x0, 64 * 1024, 2048},
{"M25P10", 0x202011, 0x0, 32 * 1024, 4, 0},
{"M25P20", 0x202012, 0x0, 64 * 1024, 4, 0},
{"M25P40", 0x202013, 0x0, 64 * 1024, 8, 0},
{"M25P80", 0x202014, 0x0, 64 * 1024, 16, 0},
{"M25P16", 0x202015, 0x0, 64 * 1024, 32, 0},
{"M25P32", 0x202016, 0x0, 64 * 1024, 64, 0},
{"M25P64", 0x202017, 0x0, 64 * 1024, 128, 0},
{"M25P128", 0x202018, 0x0, 256 * 1024, 64, 0},
{"N25Q32", 0x20ba16, 0x0, 64 * 1024, 64, 0},
{"N25Q32A", 0x20bb16, 0x0, 64 * 1024, 64, 0},
{"N25Q64", 0x20ba17, 0x0, 64 * 1024, 128, 0},
{"N25Q64A", 0x20bb17, 0x0, 64 * 1024, 128, 0},
{"N25Q128", 0x20ba18, 0x0, 64 * 1024, 256, 0},
{"N25Q128A", 0x20bb18, 0x0, 64 * 1024, 256, 0},
{"N25Q256", 0x20ba19, 0x0, 64 * 1024, 512, 0},
{"N25Q256A", 0x20bb19, 0x0, 64 * 1024, 512, 0},
{"N25Q512", 0x20ba20, 0x0, 64 * 1024, 1024, 0},
{"N25Q512A", 0x20bb20, 0x0, 64 * 1024, 1024, 0},
{"N25Q1024", 0x20ba21, 0x0, 64 * 1024, 2048, 0},
{"N25Q1024A", 0x20bb21, 0x0, 64 * 1024, 2048, 0},
#endif
#ifdef CONFIG_SPI_FLASH_SST /* SST */
{"SST25VF040B", 0xbf258d, 0x0, 64 * 1024, 8},
{"SST25VF080B", 0xbf258e, 0x0, 64 * 1024, 16},
{"SST25VF016B", 0xbf2541, 0x0, 64 * 1024, 32},
{"SST25VF032B", 0xbf254a, 0x0, 64 * 1024, 64},
{"SST25VF064C", 0xbf254b, 0x0, 64 * 1024, 128},
{"SST25WF512", 0xbf2501, 0x0, 64 * 1024, 1},
{"SST25WF010", 0xbf2502, 0x0, 64 * 1024, 2},
{"SST25WF020", 0xbf2503, 0x0, 64 * 1024, 4},
{"SST25WF040", 0xbf2504, 0x0, 64 * 1024, 8},
{"SST25WF080", 0xbf2505, 0x0, 64 * 1024, 16},
{"SST25VF040B", 0xbf258d, 0x0, 64 * 1024, 8, SST_WP},
{"SST25VF080B", 0xbf258e, 0x0, 64 * 1024, 16, SST_WP},
{"SST25VF016B", 0xbf2541, 0x0, 64 * 1024, 32, SST_WP},
{"SST25VF032B", 0xbf254a, 0x0, 64 * 1024, 64, SST_WP},
{"SST25VF064C", 0xbf254b, 0x0, 64 * 1024, 128, 0},
{"SST25WF512", 0xbf2501, 0x0, 64 * 1024, 1, SST_WP},
{"SST25WF010", 0xbf2502, 0x0, 64 * 1024, 2, SST_WP},
{"SST25WF020", 0xbf2503, 0x0, 64 * 1024, 4, SST_WP},
{"SST25WF040", 0xbf2504, 0x0, 64 * 1024, 8, SST_WP},
{"SST25WF080", 0xbf2505, 0x0, 64 * 1024, 16, SST_WP},
#endif
#ifdef CONFIG_SPI_FLASH_WINBOND /* WINBOND */
{"W25P80", 0xef2014, 0x0, 64 * 1024, 16},
{"W25P16", 0xef2015, 0x0, 64 * 1024, 32},
{"W25P32", 0xef2016, 0x0, 64 * 1024, 64},
{"W25X40", 0xef3013, 0x0, 64 * 1024, 8},
{"W25X16", 0xef3015, 0x0, 64 * 1024, 32},
{"W25X32", 0xef3016, 0x0, 64 * 1024, 64},
{"W25X64", 0xef3017, 0x0, 64 * 1024, 128},
{"W25Q80BL", 0xef4014, 0x0, 64 * 1024, 16},
{"W25Q16CL", 0xef4015, 0x0, 64 * 1024, 32},
{"W25Q32BV", 0xef4016, 0x0, 64 * 1024, 64},
{"W25Q64CV", 0xef4017, 0x0, 64 * 1024, 128},
{"W25Q128BV", 0xef4018, 0x0, 64 * 1024, 256},
{"W25Q256", 0xef4019, 0x0, 64 * 1024, 512},
{"W25Q80BW", 0xef5014, 0x0, 64 * 1024, 16},
{"W25Q16DW", 0xef6015, 0x0, 64 * 1024, 32},
{"W25Q32DW", 0xef6016, 0x0, 64 * 1024, 64},
{"W25Q64DW", 0xef6017, 0x0, 64 * 1024, 128},
{"W25Q128FW", 0xef6018, 0x0, 64 * 1024, 256},
{"W25P80", 0xef2014, 0x0, 64 * 1024, 16, 0},
{"W25P16", 0xef2015, 0x0, 64 * 1024, 32, 0},
{"W25P32", 0xef2016, 0x0, 64 * 1024, 64, 0},
{"W25X40", 0xef3013, 0x0, 64 * 1024, 8, 0},
{"W25X16", 0xef3015, 0x0, 64 * 1024, 32, 0},
{"W25X32", 0xef3016, 0x0, 64 * 1024, 64, 0},
{"W25X64", 0xef3017, 0x0, 64 * 1024, 128, 0},
{"W25Q80BL", 0xef4014, 0x0, 64 * 1024, 16, 0},
{"W25Q16CL", 0xef4015, 0x0, 64 * 1024, 32, 0},
{"W25Q32BV", 0xef4016, 0x0, 64 * 1024, 64, 0},
{"W25Q64CV", 0xef4017, 0x0, 64 * 1024, 128, 0},
{"W25Q128BV", 0xef4018, 0x0, 64 * 1024, 256, 0},
{"W25Q256", 0xef4019, 0x0, 64 * 1024, 512, 0},
{"W25Q80BW", 0xef5014, 0x0, 64 * 1024, 16, 0},
{"W25Q16DW", 0xef6015, 0x0, 64 * 1024, 32, 0},
{"W25Q32DW", 0xef6016, 0x0, 64 * 1024, 64, 0},
{"W25Q64DW", 0xef6017, 0x0, 64 * 1024, 128, 0},
{"W25Q128FW", 0xef6018, 0x0, 64 * 1024, 256, 0},
#endif
/*
* Note:
@ -189,6 +191,10 @@ struct spi_flash *spi_flash_validate_ids(struct spi_slave *spi, u8 *idcode)
/* Assign spi_flash ops */
flash->write = spi_flash_cmd_write_multi;
#ifdef CONFIG_SPI_FLASH_SST
if (params->flags & SST_WP)
flash->write = sst_write_wp;
#endif
flash->erase = spi_flash_cmd_erase;
flash->read = spi_flash_cmd_read_fast;

7
include/spi_flash.h
View File

@ -17,6 +17,13 @@
#include <linux/types.h>
#include <linux/compiler.h>
/* SST specific macros */
#ifdef CONFIG_SPI_FLASH_SST
# define SST_WP 0x01 /* Supports AAI word program */
# define CMD_SST_BP 0x02 /* Byte Program */
# define CMD_SST_AAI_WP 0xAD /* Auto Address Incr Word Program */
#endif
struct spi_flash {
struct spi_slave *spi;