Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 6935224d authored by Martin Sperl's avatar Martin Sperl Committed by Mark Brown
Browse files

spi: bcm2835: enable support of 3-wire mode 



Signed-off-by: default avatarMartin Sperl <kernel@martin.sperl.org>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 210b4923

drivers/spi/spi-bcm2835.c

+5 −1
Original line number Diff line number Diff line
@@ -67,7 +67,8 @@ 
#define BCM2835_SPI_CS_CS_01		0x00000001



#define BCM2835_SPI_TIMEOUT_MS	30000

#define BCM2835_SPI_MODE_BITS	(SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_NO_CS)

#define BCM2835_SPI_MODE_BITS	(SPI_CPOL | SPI_CPHA | SPI_CS_HIGH \

				| SPI_NO_CS | SPI_3WIRE)



#define DRV_NAME	"spi-bcm2835"
@@ -163,6 +164,9 @@ static int bcm2835_spi_start_transfer(struct spi_device *spi, 
		cdiv = 0; /* 0 is the slowest we can go */

	}



	if ((spi->mode & SPI_3WIRE) && (tfr->rx_buf))

		cs |= BCM2835_SPI_CS_REN;



	if (spi->mode & SPI_CPOL)

		cs |= BCM2835_SPI_CS_CPOL;

	if (spi->mode & SPI_CPHA)