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 --- Changes for v4: - none Changes for v3: - none Changes for v2: - none
drivers/mtd/spi/spi_flash_internal.h | 5 ++ drivers/mtd/spi/spi_flash_ops.c | 93 ++++++++++++++++++++ drivers/mtd/spi/spi_flash_probe.c | 160 ++++++++++++++++++----------------- include/spi_flash.h | 7 ++ 4 files changed, 188 insertions(+), 77 deletions(-)
diff --git a/drivers/mtd/spi/spi_flash_internal.h b/drivers/mtd/spi/spi_flash_internal.h index af1afa9..ce34ce0 100644 --- a/drivers/mtd/spi/spi_flash_internal.h +++ b/drivers/mtd/spi/spi_flash_internal.h @@ -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. */ diff --git a/drivers/mtd/spi/spi_flash_ops.c b/drivers/mtd/spi/spi_flash_ops.c index 6133363..79381b1 100644 --- a/drivers/mtd/spi/spi_flash_ops.c +++ b/drivers/mtd/spi/spi_flash_ops.c @@ -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 diff --git a/drivers/mtd/spi/spi_flash_probe.c b/drivers/mtd/spi/spi_flash_probe.c index f4aa446..da43fda 100644 --- a/drivers/mtd/spi/spi_flash_probe.c +++ b/drivers/mtd/spi/spi_flash_probe.c @@ -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, 4 * 1024, 128}, - {"W25X16", 0xef3015, 0x0, 4 * 1024, 512}, - {"W25X32", 0xef3016, 0x0, 4 * 1024, 1024}, - {"W25X64", 0xef3017, 0x0, 4 * 1024, 2048}, - {"W25Q80BL", 0xef4014, 0x0, 4 * 1024, 256}, - {"W25Q16CL", 0xef4015, 0x0, 4 * 1024, 512}, - {"W25Q32BV", 0xef4016, 0x0, 4 * 1024, 1024}, - {"W25Q64CV", 0xef4017, 0x0, 4 * 1024, 2048}, - {"W25Q128BV", 0xef4018, 0x0, 4 * 1024, 4096}, - {"W25Q256", 0xef4019, 0x0, 4 * 1024, 8192}, - {"W25Q80BW", 0xef5014, 0x0, 4 * 1024, 256}, - {"W25Q16DW", 0xef6015, 0x0, 4 * 1024, 512}, - {"W25Q32DW", 0xef6016, 0x0, 4 * 1024, 1024}, - {"W25Q64DW", 0xef6017, 0x0, 4 * 1024, 2048}, - {"W25Q128FW", 0xef6018, 0x0, 4 * 1024, 4096}, + {"W25P80", 0xef2014, 0x0, 64 * 1024, 16, 0}, + {"W25P16", 0xef2015, 0x0, 64 * 1024, 32, 0}, + {"W25P32", 0xef2016, 0x0, 64 * 1024, 64, 0}, + {"W25X40", 0xef3013, 0x0, 4 * 1024, 128, 0}, + {"W25X16", 0xef3015, 0x0, 4 * 1024, 512, 0}, + {"W25X32", 0xef3016, 0x0, 4 * 1024, 1024, 0}, + {"W25X64", 0xef3017, 0x0, 4 * 1024, 2048, 0}, + {"W25Q80BL", 0xef4014, 0x0, 4 * 1024, 256, 0}, + {"W25Q16CL", 0xef4015, 0x0, 4 * 1024, 512, 0}, + {"W25Q32BV", 0xef4016, 0x0, 4 * 1024, 1024, 0}, + {"W25Q64CV", 0xef4017, 0x0, 4 * 1024, 2048, 0}, + {"W25Q128BV", 0xef4018, 0x0, 4 * 1024, 4096, 0}, + {"W25Q256", 0xef4019, 0x0, 4 * 1024, 8192, 0}, + {"W25Q80BW", 0xef5014, 0x0, 4 * 1024, 256, 0}, + {"W25Q16DW", 0xef6015, 0x0, 4 * 1024, 512, 0}, + {"W25Q32DW", 0xef6016, 0x0, 4 * 1024, 1024, 0}, + {"W25Q64DW", 0xef6017, 0x0, 4 * 1024, 2048, 0}, + {"W25Q128FW", 0xef6018, 0x0, 4 * 1024, 4096, 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;
diff --git a/include/spi_flash.h b/include/spi_flash.h index bfc59aa..4f35c30 100644 --- a/include/spi_flash.h +++ b/include/spi_flash.h @@ -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;