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mtd: spi-nor: Add the SPI_NOR_XSR_RDY flag 

S3AN flashes use a specific opcode to read the status register.
We currently use the SPI_S3AN flag to decide whether this specific
SR read opcode should be used, but SPI_S3AN is about to disappear, so
let's add a new flag.

Note that we use the same bit as SPI_S3AN implies SPI_NOR_XSR_RDY and
vice versa.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
This commit is contained in:
Boris Brezillon 2019-07-30 11:56:53 +03:00 committed by Tudor Ambarus
parent 641edddb4f
commit ad3bba06b6
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1 changed files with 9 additions and 1 deletions
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10
drivers/mtd/spi-nor/spi-nor.c
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@ -211,6 +211,14 @@ struct flash_info {
* bit. Must be used with
* SPI_NOR_HAS_LOCK.
*/
#define SPI_NOR_XSR_RDY BIT(10) /*
* S3AN flashes have specific opcode to
* read the status register.
* Flags SPI_NOR_XSR_RDY and SPI_S3AN
* use the same bit as one implies the
* other, but we will get rid of
* SPI_S3AN soon.
*/
#define SPI_S3AN BIT(10) /*
* Xilinx Spartan 3AN In-System Flash
* (MFR cannot be used for probing
@ -4799,7 +4807,7 @@ int spi_nor_scan(struct spi_nor *nor, const char *name,
* spi_nor_wait_till_ready(). Xilinx S3AN share MFR
* with Atmel spi-nor
*/
if (info->flags & SPI_S3AN)
if (info->flags & SPI_NOR_XSR_RDY)
nor->flags |= SNOR_F_READY_XSR_RDY;
if (info->flags & SPI_NOR_HAS_LOCK)