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| author | Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com> | 2018-12-03 08:39:12 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-12-03 17:20:14 +0000 |
| commit | b12a084c8729ef423089bb9a5a143eed39cd94e7 (patch) | |
| tree | a86f41de1f25d7464c670788737f15d18ff81965 /drivers/spi/spi-mem.c | |
| parent | 6b03061f882de49b83ccf44beb3a12c920a2da1b (diff) | |
| download | linux-b12a084c8729ef423089bb9a5a143eed39cd94e7.tar.bz2 | |
spi: spi-mem: add support for octal mode I/O data transfer
Add support for octal mode I/O data transfer in spi-mem framework.
Signed-off-by: Yogesh Gaur <yogeshnarayan.gaur@nxp.com>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-mem.c')
| -rw-r--r-- | drivers/spi/spi-mem.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c index 62a7b80801d2..5e15d62775e9 100644 --- a/drivers/spi/spi-mem.c +++ b/drivers/spi/spi-mem.c @@ -12,7 +12,7 @@ #include "internals.h" -#define SPI_MEM_MAX_BUSWIDTH 4 +#define SPI_MEM_MAX_BUSWIDTH 8 /** * spi_controller_dma_map_mem_op_data() - DMA-map the buffer attached to a @@ -121,6 +121,13 @@ static int spi_check_buswidth_req(struct spi_mem *mem, u8 buswidth, bool tx) break; + case 8: + if ((tx && (mode & SPI_TX_OCTAL)) || + (!tx && (mode & SPI_RX_OCTAL))) + return 0; + + break; + default: break; } |