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

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
...@@ -115,6 +115,7 @@ static void ath79_spi_disable(struct ath79_spi *sp) ...@@ -115,6 +115,7 @@ static void ath79_spi_disable(struct ath79_spi *sp)
static int ath79_spi_setup_cs(struct spi_device *spi) static int ath79_spi_setup_cs(struct spi_device *spi)
{ {
struct ath79_spi *sp = ath79_spidev_to_sp(spi);
int status; int status;
if (spi->chip_select && !gpio_is_valid(spi->cs_gpio)) if (spi->chip_select && !gpio_is_valid(spi->cs_gpio))
...@@ -132,6 +133,13 @@ static int ath79_spi_setup_cs(struct spi_device *spi) ...@@ -132,6 +133,13 @@ static int ath79_spi_setup_cs(struct spi_device *spi)
status = gpio_request_one(spi->cs_gpio, flags, status = gpio_request_one(spi->cs_gpio, flags,
dev_name(&spi->dev)); 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; return status;
......
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