Commit 83f0f398 authored by Alban Bedel's avatar Alban Bedel Committed by Mark Brown
Browse files

spi: spi-ath79: Set the initial state of CS0 



The internal chip select CS0 wasn't initialized properly to work with
CS HIGH chips.

Signed-off-by: default avatarAlban Bedel <albeu@free.fr>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 3e19acdc

drivers/spi/spi-ath79.c

+8 −0
Original line number Diff line number Diff line
@@ -115,6 +115,7 @@ static void ath79_spi_disable(struct ath79_spi *sp) 


static int ath79_spi_setup_cs(struct spi_device *spi)

{

	struct ath79_spi *sp = ath79_spidev_to_sp(spi);

	int status;



	if (spi->chip_select && !gpio_is_valid(spi->cs_gpio))
@@ -132,6 +133,13 @@ static int ath79_spi_setup_cs(struct spi_device *spi) 


		status = gpio_request_one(spi->cs_gpio, flags,

					  dev_name(&spi->dev));

	} else {

		if (spi->mode & SPI_CS_HIGH)

			sp->ioc_base &= ~AR71XX_SPI_IOC_CS0;

		else

			sp->ioc_base |= AR71XX_SPI_IOC_CS0;



		ath79_spi_wr(sp, AR71XX_SPI_REG_IOC, sp->ioc_base);

	}



	return status;