This patch sets the "CONT" bit in the configuration register and adds a flag for identifying continuous read mode capability.
Signed-off-by: Leo Yu liangyanyu13@gmail.com --- drivers/mtd/nand/spi/core.c | 12 ++++++++++++ include/linux/mtd/spinand.h | 2 ++ 2 files changed, 14 insertions(+)
diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c index 134bf22c80..2419c267d6 100644 --- a/drivers/mtd/nand/spi/core.c +++ b/drivers/mtd/nand/spi/core.c @@ -216,6 +216,18 @@ static int spinand_init_quad_enable(struct spinand_device *spinand) enable ? CFG_QUAD_ENABLE : 0); }
+static int spinand_continuous_read_enable(struct spinand_device *spinand, + bool enable) +{ + int ret = spinand_upd_cfg(spinand, CFG_CONT_READ_ENABLE, + enable ? CFG_CONT_READ_ENABLE : 0); + + if (!ret) + spinand->use_continuous_read = enable; + + return ret; +} + static int spinand_ecc_enable(struct spinand_device *spinand, bool enable) { diff --git a/include/linux/mtd/spinand.h b/include/linux/mtd/spinand.h index 15bcd59f34..e6a5478b0a 100644 --- a/include/linux/mtd/spinand.h +++ b/include/linux/mtd/spinand.h @@ -131,6 +131,7 @@ #define REG_CFG 0xb0 #define CFG_OTP_ENABLE BIT(6) #define CFG_ECC_ENABLE BIT(4) +#define CFG_CONT_READ_ENABLE BIT(2) #define CFG_QUAD_ENABLE BIT(0)
/* status register */ @@ -247,6 +248,7 @@ struct spinand_ecc_info {
#define SPINAND_HAS_QE_BIT BIT(0) #define SPINAND_HAS_CR_FEAT_BIT BIT(1) +#define SPINAND_HAS_CONT_READ_BIT BIT(2)
/** * struct spinand_info - Structure used to describe SPI NAND chips -- 2.17.1