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authorJagan Teki <jagan@openedev.com>2016-10-30 23:16:11 +0530
committerJagan Teki <jagan@openedev.com>2016-11-18 13:04:52 +0530
commitdda06a4328d6881b4809983e46e281c30d872c13 (patch)
tree49f1b9c76b18728f9f61993d61b735a77df429fb /drivers/mtd/spi
parentf790ca7c7dfd6b96d418a29d4a8654cdfebbdfc3 (diff)
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sf: Simplify lock ops detection code
Simplify the flash_lock ops detection code and added meaningful comment. Cc: Bin Meng <bmeng.cn@gmail.com> Cc: York Sun <york.sun@nxp.com> Cc: Vignesh R <vigneshr@ti.com> Cc: Mugunthan V N <mugunthanvnm@ti.com> Cc: Michal Simek <michal.simek@xilinx.com> Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com> Signed-off-by: Jagan Teki <jagan@openedev.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagan Teki <jagan@openedev.com> Tested-by: Jagan Teki <jagan@openedev.com>
Diffstat (limited to 'drivers/mtd/spi')
-rw-r--r--drivers/mtd/spi/spi_flash.c12
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c
index 95ee5ac..220c961 100644
--- a/drivers/mtd/spi/spi_flash.c
+++ b/drivers/mtd/spi/spi_flash.c
@@ -1118,19 +1118,15 @@ int spi_flash_scan(struct spi_flash *flash)
flash->read = spi_flash_cmd_read_ops;
#endif
- /* lock hooks are flash specific - assign them based on idcode0 */
- switch (JEDEC_MFR(info)) {
#if defined(CONFIG_SPI_FLASH_STMICRO) || defined(CONFIG_SPI_FLASH_SST)
- case SPI_FLASH_CFI_MFR_STMICRO:
- case SPI_FLASH_CFI_MFR_SST:
+ /* NOR protection support for STmicro/Micron chips and similar */
+ if (JEDEC_MFR(info) == SPI_FLASH_CFI_MFR_STMICRO ||
+ JEDEC_MFR(info) == SPI_FLASH_CFI_MFR_SST) {
flash->flash_lock = stm_lock;
flash->flash_unlock = stm_unlock;
flash->flash_is_locked = stm_is_locked;
-#endif
- break;
- default:
- debug("SF: Lock ops not supported for %02x flash\n", JEDEC_MFR(info));
}
+#endif
/* Compute the flash size */
flash->shift = (flash->dual_flash & SF_DUAL_PARALLEL_FLASH) ? 1 : 0;