From 54ba653ab63b31c8f5405fb0ee9dfba05cbb1521 Mon Sep 17 00:00:00 2001 From: Jagannadha Sutradharudu Teki Date: Fri, 12 Dec 2014 19:36:14 +0530 Subject: [PATCH] sf: Enable byte program support Enabled byte program support for sst flashes in sf. Few controllers will only support BP, so this patch gives a tx transfer flag to set the BP so-that sf will operate on byte program transfer. A new TX operation mode SPI_OPM_TX_BP is introduced for such SPI controller to use byte program op for SST flash. Signed-off-by: Jagannadha Sutradharudu Teki Tested-by: Bin Meng --- drivers/mtd/spi/sf_internal.h | 5 ++++- drivers/mtd/spi/sf_params.c | 18 +++++++++--------- drivers/mtd/spi/sf_probe.c | 8 ++++++-- include/spi.h | 1 + 4 files changed, 20 insertions(+), 12 deletions(-) diff --git a/drivers/mtd/spi/sf_internal.h b/drivers/mtd/spi/sf_internal.h index fb53cb0834..785f7a96fe 100644 --- a/drivers/mtd/spi/sf_internal.h +++ b/drivers/mtd/spi/sf_internal.h @@ -40,10 +40,13 @@ enum { SECT_4K = 1 << 0, SECT_32K = 1 << 1, E_FSR = 1 << 2, - WR_QPP = 1 << 3, + SST_BP = 1 << 3, SST_WP = 1 << 4, + WR_QPP = 1 << 5, }; +#define SST_WR (SST_BP | SST_WP) + #define SPI_FLASH_3B_ADDR_LEN 3 #define SPI_FLASH_CMD_LEN (1 + SPI_FLASH_3B_ADDR_LEN) #define SPI_FLASH_16MB_BOUN 0x1000000 diff --git a/drivers/mtd/spi/sf_params.c b/drivers/mtd/spi/sf_params.c index 0f1f837106..30875b3660 100644 --- a/drivers/mtd/spi/sf_params.c +++ b/drivers/mtd/spi/sf_params.c @@ -89,16 +89,16 @@ const struct spi_flash_params spi_flash_params_table[] = { {"N25Q1024A", 0x20bb21, 0x0, 64 * 1024, 2048, RD_FULL, WR_QPP | E_FSR | SECT_4K}, #endif #ifdef CONFIG_SPI_FLASH_SST /* SST */ - {"SST25VF040B", 0xbf258d, 0x0, 64 * 1024, 8, RD_NORM, SECT_4K | SST_WP}, - {"SST25VF080B", 0xbf258e, 0x0, 64 * 1024, 16, RD_NORM, SECT_4K | SST_WP}, - {"SST25VF016B", 0xbf2541, 0x0, 64 * 1024, 32, RD_NORM, SECT_4K | SST_WP}, - {"SST25VF032B", 0xbf254a, 0x0, 64 * 1024, 64, RD_NORM, SECT_4K | SST_WP}, + {"SST25VF040B", 0xbf258d, 0x0, 64 * 1024, 8, RD_NORM, SECT_4K | SST_WR}, + {"SST25VF080B", 0xbf258e, 0x0, 64 * 1024, 16, RD_NORM, SECT_4K | SST_WR}, + {"SST25VF016B", 0xbf2541, 0x0, 64 * 1024, 32, RD_NORM, SECT_4K | SST_WR}, + {"SST25VF032B", 0xbf254a, 0x0, 64 * 1024, 64, RD_NORM, SECT_4K | SST_WR}, {"SST25VF064C", 0xbf254b, 0x0, 64 * 1024, 128, RD_NORM, SECT_4K}, - {"SST25WF512", 0xbf2501, 0x0, 64 * 1024, 1, RD_NORM, SECT_4K | SST_WP}, - {"SST25WF010", 0xbf2502, 0x0, 64 * 1024, 2, RD_NORM, SECT_4K | SST_WP}, - {"SST25WF020", 0xbf2503, 0x0, 64 * 1024, 4, RD_NORM, SECT_4K | SST_WP}, - {"SST25WF040", 0xbf2504, 0x0, 64 * 1024, 8, RD_NORM, SECT_4K | SST_WP}, - {"SST25WF080", 0xbf2505, 0x0, 64 * 1024, 16, RD_NORM, SECT_4K | SST_WP}, + {"SST25WF512", 0xbf2501, 0x0, 64 * 1024, 1, RD_NORM, SECT_4K | SST_WR}, + {"SST25WF010", 0xbf2502, 0x0, 64 * 1024, 2, RD_NORM, SECT_4K | SST_WR}, + {"SST25WF020", 0xbf2503, 0x0, 64 * 1024, 4, RD_NORM, SECT_4K | SST_WR}, + {"SST25WF040", 0xbf2504, 0x0, 64 * 1024, 8, RD_NORM, SECT_4K | SST_WR}, + {"SST25WF080", 0xbf2505, 0x0, 64 * 1024, 16, RD_NORM, SECT_4K | SST_WR}, #endif #ifdef CONFIG_SPI_FLASH_WINBOND /* WINBOND */ {"W25P80", 0xef2014, 0x0, 64 * 1024, 16, RD_NORM, 0}, diff --git a/drivers/mtd/spi/sf_probe.c b/drivers/mtd/spi/sf_probe.c index 7cde4c052a..ce9987fd1a 100644 --- a/drivers/mtd/spi/sf_probe.c +++ b/drivers/mtd/spi/sf_probe.c @@ -136,8 +136,12 @@ static int spi_flash_validate_params(struct spi_slave *spi, u8 *idcode, #ifndef CONFIG_DM_SPI_FLASH flash->write = spi_flash_cmd_write_ops; #if defined(CONFIG_SPI_FLASH_SST) - if (params->flags & SST_WP) - flash->write = sst_write_wp; + if (params->flags & SST_WR) { + if (flash->spi->op_mode_tx & SPI_OPM_TX_BP) + flash->write = sst_write_bp; + else + flash->write = sst_write_wp; + } #endif flash->erase = spi_flash_cmd_erase_ops; flash->read = spi_flash_cmd_read_ops; diff --git a/include/spi.h b/include/spi.h index 5b7827113d..ec17bd0bcc 100644 --- a/include/spi.h +++ b/include/spi.h @@ -34,6 +34,7 @@ /* SPI TX operation modes */ #define SPI_OPM_TX_QPP (1 << 0) +#define SPI_OPM_TX_BP (1 << 1) /* SPI RX operation modes */ #define SPI_OPM_RX_AS (1 << 0) -- 2.39.5