Unverified Commit 054320b2 authored by Linus Walleij's avatar Linus Walleij Committed by Mark Brown
Browse files

spi: clps711x: Convert to use CS GPIO descriptors 



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: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent cfeefa79

drivers/spi/spi-clps711x.c

+2 −21
Original line number Diff line number Diff line
@@ -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;