[PATCH 2/4] mtd: spinand: Add continuous read exit command

[Zhengxun]

Add a continuous read exit command to terminate continuous read
operation.

Signed-off-by: Zhengxun <zhengxunli.mxic at gmail.com>
---
 drivers/mtd/nand/spi/core.c | 10 ++++++++++
 include/linux/mtd/spinand.h |  6 ++++++
 2 files changed, 16 insertions(+)

diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c
index bcdd438..0d9632f 100644
--- a/drivers/mtd/nand/spi/core.c
+++ b/drivers/mtd/nand/spi/core.c
@@ -431,6 +431,16 @@ static int spinand_read_from_cache_op(struct spinand_device *spinand,
 	return 0;
 }
 
+static int spinand_continuous_read_exit(struct spinand_device *spinand)
+{
+	struct spi_mem_op op = SPINAND_EXIT_CONT_READ;
+
+	if (!(spinand->flags & SPINAND_HAS_CONT_READ_BIT))
+		return 0;
+
+	return spi_mem_exec_op(spinand->spimem, &op);
+}
+
 static int spinand_write_to_cache_op(struct spinand_device *spinand,
 				     const struct nand_page_io_req *req)
 {
diff --git a/include/linux/mtd/spinand.h b/include/linux/mtd/spinand.h
index 04be10e..e044aba 100644
--- a/include/linux/mtd/spinand.h
+++ b/include/linux/mtd/spinand.h
@@ -122,6 +122,12 @@
 		   SPI_MEM_OP_DUMMY(ndummy, 4),				\
 		   SPI_MEM_OP_DATA_IN(len, buf, 4))
 
+#define SPINAND_EXIT_CONT_READ						\
+	SPI_MEM_OP(SPI_MEM_OP_CMD(0x63, 1),				\
+		   SPI_MEM_OP_NO_ADDR,					\
+		   SPI_MEM_OP_NO_DUMMY,					\
+		   SPI_MEM_OP_NO_DATA)
+
 #define SPINAND_PROG_EXEC_OP(addr)					\
 	SPI_MEM_OP(SPI_MEM_OP_CMD(0x10, 1),				\
 		   SPI_MEM_OP_ADDR(3, addr, 1),				\
-- 
2.7.4