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 <vigne...@ti.com>
---
drivers/mtd/devices/m25p80.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index fe9ceb7b5405..7ef0c5009ead 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -131,6 +131,11 @@ 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));
--
2.6.3
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