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Commit 40fbffd9 authored by Marc Dietrich's avatar Marc Dietrich Committed by Greg Kroah-Hartman
Browse files

staging: nvec: convert to use GPIO descriptors 



Use GPIO descriptors instead of relying on the old method.

Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarMarc Dietrich <marvin24@gmx.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d4381795

drivers/staging/nvec/nvec.c

+10 −32
Original line number Diff line number Diff line
@@ -17,12 +17,11 @@ 
#include <linux/completion.h>

#include <linux/delay.h>

#include <linux/err.h>

#include <linux/gpio.h>

#include <linux/gpio/consumer.h>

#include <linux/interrupt.h>

#include <linux/io.h>

#include <linux/irq.h>

#include <linux/of.h>

#include <linux/of_gpio.h>

#include <linux/list.h>

#include <linux/mfd/core.h>

#include <linux/mutex.h>
@@ -236,8 +235,8 @@ static size_t nvec_msg_size(struct nvec_msg *msg) 
static void nvec_gpio_set_value(struct nvec_chip *nvec, int value)

{

	dev_dbg(nvec->dev, "GPIO changed from %u to %u\n",

		gpio_get_value(nvec->gpio), value);

	gpio_set_value(nvec->gpio, value);

		gpiod_get_value(nvec->gpiod), value);

	gpiod_set_value(nvec->gpiod, value);

}



/**
@@ -761,27 +760,6 @@ static void nvec_power_off(void) 
	nvec_write_async(nvec_power_handle, ap_pwr_down, 2);

}



/*

 *  Parse common device tree data

 */

static int nvec_i2c_parse_dt_pdata(struct nvec_chip *nvec)

{

	nvec->gpio = of_get_named_gpio(nvec->dev->of_node, "request-gpios", 0);



	if (nvec->gpio < 0) {

		dev_err(nvec->dev, "no gpio specified");

		return -ENODEV;

	}



	if (of_property_read_u32(nvec->dev->of_node, "slave-addr",

				 &nvec->i2c_addr)) {

		dev_err(nvec->dev, "no i2c address specified");

		return -ENODEV;

	}



	return 0;

}



static int tegra_nvec_probe(struct platform_device *pdev)

{

	int err, ret;
@@ -807,9 +785,10 @@ static int tegra_nvec_probe(struct platform_device *pdev) 
	platform_set_drvdata(pdev, nvec);

	nvec->dev = dev;



	err = nvec_i2c_parse_dt_pdata(nvec);

	if (err < 0)

		return err;

	if (of_property_read_u32(dev->of_node, "slave-addr", &nvec->i2c_addr)) {

		dev_err(dev, "no i2c address specified");

		return -ENODEV;

	}



	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	base = devm_ioremap_resource(dev, res);
@@ -850,11 +829,10 @@ static int tegra_nvec_probe(struct platform_device *pdev) 
	INIT_WORK(&nvec->rx_work, nvec_dispatch);

	INIT_WORK(&nvec->tx_work, nvec_request_master);



	err = devm_gpio_request_one(dev, nvec->gpio, GPIOF_OUT_INIT_HIGH,

				    "nvec gpio");

	if (err < 0) {

	nvec->gpiod = devm_gpiod_get(dev, "request", GPIOD_OUT_HIGH);

	if (IS_ERR(nvec->gpiod)) {

		dev_err(dev, "couldn't request gpio\n");

		return -ENODEV;

		return PTR_ERR(nvec->gpiod);

	}



	err = devm_request_irq(dev, nvec->irq, nvec_interrupt, 0,

drivers/staging/nvec/nvec.h

+1 −1
Original line number Diff line number Diff line
@@ -132,7 +132,7 @@ struct nvec_msg { 
 */

struct nvec_chip {

	struct device *dev;

	int gpio;

	struct gpio_desc *gpiod;

	int irq;

	u32 i2c_addr;

	void __iomem *base;