[PATCH v4 5/7] mtd: m25p80: add support of octo mode I/O transfer

From: Yogesh Narayan Gaur
Date: Thu Nov 22 2018 - 00:15:02 EST


Add support for octo mode I/O data transfer based on the controller (spi)
mode.
Assign hw-capability mask bits for octo transfer.

Signed-off-by: Yogesh Gaur <yogeshnarayan.gaur@xxxxxxx>
---
Changes for v4:
- None
Changes for v3:
- Modified string 'octal' with 'octo'.
Changes for v2:
- Incorporated review comments of Boris.

drivers/mtd/devices/m25p80.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index c4a1d04..6f3c280 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -195,7 +195,14 @@ static int m25p_probe(struct spi_mem *spimem)
spi_mem_set_drvdata(spimem, flash);
flash->spimem = spimem;

- if (spi->mode & SPI_RX_QUAD) {
+ if (spi->mode & SPI_RX_OCTO) {
+ hwcaps.mask |= SNOR_HWCAPS_READ_1_1_8;
+
+ if (spi->mode & SPI_TX_OCTO)
+ hwcaps.mask |= (SNOR_HWCAPS_READ_1_8_8 |
+ SNOR_HWCAPS_PP_1_1_8 |
+ SNOR_HWCAPS_PP_1_8_8);
+ } else if (spi->mode & SPI_RX_QUAD) {
hwcaps.mask |= SNOR_HWCAPS_READ_1_1_4;

if (spi->mode & SPI_TX_QUAD)
--
2.7.4