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spi: spi-mem: add support for octal mode I/O data transfer

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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>
This commit is contained in:
Yogesh Narayan Gaur 2018-12-03 08:39:12 +00:00 committed by Mark Brown
parent 6b03061f88
commit b12a084c87
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GPG Key ID: 24D68B725D5487D0
1 changed files with 8 additions and 1 deletions
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9
drivers/spi/spi-mem.c
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@ -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;
}