diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2019-01-07 16:51:56 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-01-09 12:42:18 +0000 |
| commit | 9400c41e77b8f1f9c711b08a6c79bdbc5681fb00 (patch) | |
| tree | ba0ccbe34e4898631308066fd54c46d1395ba0cb /drivers/spi/spi-dw.c | |
| parent | 101a68e74fe089b975c407f1bc9359882b05489a (diff) | |
spi: dw: Convert to use CS GPIO descriptors
This converts the DesignWare (dw) SPI master driver to
use GPIO descriptors for chip select handling.
This driver has a duplicate DT parser in addition to the
one in the core, sets up the line as non-asserted and
relies on the core to drive the GPIOs.
It is a pretty straight-forward conversion.
Cc: Talel Shenhar <talel@amazon.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Linuxarm <linuxarm@huawei.com>
Tested-by: Jay Fang <f.fangjian@huawei.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-dw.c')
| -rw-r--r-- | drivers/spi/spi-dw.c | 9 |
1 files changed, 1 insertions, 8 deletions
diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index a945fad3db62..f54b498001a9 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -20,7 +20,6 @@ #include <linux/delay.h> #include <linux/slab.h> #include <linux/spi/spi.h> -#include <linux/gpio.h> #include "spi-dw.h" @@ -426,13 +425,6 @@ static int dw_spi_setup(struct spi_device *spi) chip->tmode = SPI_TMOD_TR; - if (gpio_is_valid(spi->cs_gpio)) { - ret = gpio_direction_output(spi->cs_gpio, - !(spi->mode & SPI_CS_HIGH)); - if (ret) - return ret; - } - return 0; } @@ -497,6 +489,7 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws) goto err_free_master; } + master->use_gpio_descriptors = true; master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LOOP; master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 16); master->bus_num = dws->bus_num; |