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 13:42:18 +0100 |
| commit | 9400c41e77b8f1f9c711b08a6c79bdbc5681fb00 (patch) | |
| tree | ba0ccbe34e4898631308066fd54c46d1395ba0cb /drivers/spi/spi-dw-mmio.c | |
| parent | spi: davinci: Convert to use CS GPIO descriptors (diff) | |
| download | linux-9400c41e77b8f1f9c711b08a6c79bdbc5681fb00.tar.xz linux-9400c41e77b8f1f9c711b08a6c79bdbc5681fb00.zip | |
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-mmio.c')
| -rw-r--r-- | drivers/spi/spi-dw-mmio.c | 22 |
1 files changed, 0 insertions, 22 deletions
diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c index d0dd7814e997..4bd59a93d988 100644 --- a/drivers/spi/spi-dw-mmio.c +++ b/drivers/spi/spi-dw-mmio.c @@ -18,7 +18,6 @@ #include <linux/mfd/syscon.h> #include <linux/module.h> #include <linux/of.h> -#include <linux/of_gpio.h> #include <linux/of_platform.h> #include <linux/acpi.h> #include <linux/property.h> @@ -185,27 +184,6 @@ static int dw_spi_mmio_probe(struct platform_device *pdev) dws->num_cs = num_cs; - if (pdev->dev.of_node) { - int i; - - for (i = 0; i < dws->num_cs; i++) { - int cs_gpio = of_get_named_gpio(pdev->dev.of_node, - "cs-gpios", i); - - if (cs_gpio == -EPROBE_DEFER) { - ret = cs_gpio; - goto out; - } - - if (gpio_is_valid(cs_gpio)) { - ret = devm_gpio_request(&pdev->dev, cs_gpio, - dev_name(&pdev->dev)); - if (ret) - goto out; - } - } - } - init_func = device_get_match_data(&pdev->dev); if (init_func) { ret = init_func(pdev, dwsmmio); |