[v2,3/5] mtd: devices: m25p80: add support for mmap read request
diff mbox

Message ID 1446545174-14193-4-git-send-email-vigneshr@ti.com
State New
Headers show

Commit Message

Vignesh Raghavendra Nov. 3, 2015, 10:06 a.m. UTC
Certain spi controllers may support memory mapped interface to read from
m25p80 type flash devices. This interface provides better read
performance than regular SPI interface.
Call spi_mtd_mmap_read() interface, if supported, to make use of
memory-mapped interface.

Signed-off-by: Vignesh R <vigneshr@ti.com>
---
 drivers/mtd/devices/m25p80.c | 5 +++++
 1 file changed, 5 insertions(+)

Patch
diff mbox

diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index 9cd3631170ef..3978bcb513b9 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -133,6 +133,11 @@  static int m25p80_read(struct spi_nor *nor, loff_t from, size_t len,
 	/* convert the dummy cycles to the number of bytes */
 	dummy /= 8;
 
+	if (spi_mmap_read_supported(spi))
+		return spi_mtd_mmap_read(spi, from, len, retlen, buf,
+					 nor->read_opcode,
+					 nor->addr_width, dummy);
+
 	spi_message_init(&m);
 	memset(t, 0, (sizeof t));