Commit 25972d0c authored by Phil Elwell's avatar Phil Elwell Committed by Mark Brown

spi: Make GPIO CSs honour the SPI_NO_CS flag

The SPI configuration state includes an SPI_NO_CS flag that disables
all CS line manipulation, for applications that want to manage their
own chip selects. However, this flag is ignored by the GPIO CS code
in the SPI framework.

Correct this omission with a trivial patch.
Signed-off-by: default avatarPhil Elwell <phil@raspberrypi.org>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 44221eba
...@@ -775,6 +775,8 @@ static void spi_set_cs(struct spi_device *spi, bool enable) ...@@ -775,6 +775,8 @@ static void spi_set_cs(struct spi_device *spi, bool enable)
enable = !enable; enable = !enable;
if (gpio_is_valid(spi->cs_gpio)) { if (gpio_is_valid(spi->cs_gpio)) {
/* Honour the SPI_NO_CS flag */
if (!(spi->mode & SPI_NO_CS))
gpio_set_value(spi->cs_gpio, !enable); gpio_set_value(spi->cs_gpio, !enable);
/* Some SPI masters need both GPIO CS & slave_select */ /* Some SPI masters need both GPIO CS & slave_select */
if ((spi->controller->flags & SPI_MASTER_GPIO_SS) && if ((spi->controller->flags & SPI_MASTER_GPIO_SS) &&
......
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