* [RESEND PATCH v5 5/7] mtd: m25p80: add support of octal mode I/O transfer
@ 2018-12-10 4:10 Yogesh Narayan Gaur
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From: Yogesh Narayan Gaur @ 2018-12-10 4:10 UTC (permalink / raw)
To: linux-mtd@lists.infradead.org, boris.brezillon@bootlin.com,
broonie@kernel.org, marek.vasut@gmail.com, vigneshr@ti.com,
linux-spi@vger.kernel.org, devicetree@vger.kernel.org
Cc: robh@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org,
linux-arm-kernel@lists.infradead.org, computersforpeace@gmail.com,
frieder.schrempf@exceet.de, linux-kernel@vger.kernel.org,
Yogesh Narayan Gaur
Add support for octal mode I/O data transfer based on the controller (spi)
mode.
Assign hw-capability mask bits for octal transfer.
Signed-off-by: Yogesh Gaur <yogeshnarayan.gaur@nxp.com>
---
Changes for v5:
- Modified string 'octo' with 'octal'.
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..651bab6 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_OCTAL) {
+ hwcaps.mask |= SNOR_HWCAPS_READ_1_1_8;
+
+ if (spi->mode & SPI_TX_OCTAL)
+ 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
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