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spi: clps711x: Convert to use CS GPIO descriptors

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This converts the CLPS711x SPI master driver to use GPIO
descriptors for chip select handling.

The CLPS711x driver was merely requesting the GPIO and
setting the CS line non-asserted so this was a pretty
straight-forward conversion. The setup callback goes away.

Cc: Alexander Shiyan <shc_work@mail.ru>
Cc: Linuxarm <linuxarm@huawei.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Linus Walleij 2019-01-07 16:51:54 +01:00 committed by Mark Brown
parent cfeefa79dc
commit 054320b255
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GPG Key ID: 24D68B725D5487D0
1 changed files with 2 additions and 21 deletions
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23
drivers/spi/spi-clps711x.c
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@ -11,7 +11,7 @@
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
@ -36,25 +36,6 @@ struct spi_clps711x_data {
int len;
};
static int spi_clps711x_setup(struct spi_device *spi)
{
if (!spi->controller_state) {
int ret;
ret = devm_gpio_request(&spi->master->dev, spi->cs_gpio,
dev_name(&spi->master->dev));
if (ret)
return ret;
spi->controller_state = spi;
}
/* We are expect that SPI-device is not selected */
gpio_direction_output(spi->cs_gpio, !(spi->mode & SPI_CS_HIGH));
return 0;
}
static int spi_clps711x_prepare_message(struct spi_master *master,
struct spi_message *msg)
{
@ -125,11 +106,11 @@ static int spi_clps711x_probe(struct platform_device *pdev)
if (!master)
return -ENOMEM;
master->use_gpio_descriptors = true;
master->bus_num = -1;
master->mode_bits = SPI_CPHA | SPI_CS_HIGH;
master->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 8);
master->dev.of_node = pdev->dev.of_node;
master->setup = spi_clps711x_setup;
master->prepare_message = spi_clps711x_prepare_message;
master->transfer_one = spi_clps711x_transfer_one;