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net: phy: mdio-gpio: Add #defines for the GPIO index's

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The GPIOs are described in device tree using a list, without names.
Add defines to indicate what each index in the list means. These
defines should also be used by platform devices passing GPIOs via a
GPIO lookup table.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew Lunn 2018-04-19 01:02:58 +02:00 committed by David S. Miller
parent 4029ea3a86
commit fb78a95e22
2 changed files with 16 additions and 3 deletions
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10
drivers/net/phy/mdio-gpio.c
View File

@ -24,6 +24,8 @@
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/mdio-bitbang.h>
#include <linux/mdio-gpio.h>
#include <linux/gpio.h>
#include <linux/platform_data/mdio-gpio.h>
@ -38,15 +40,17 @@ struct mdio_gpio_info {
static int mdio_gpio_get_data(struct device *dev,
struct mdio_gpio_info *bitbang)
{
bitbang->mdc = devm_gpiod_get_index(dev, NULL, 0, GPIOD_OUT_LOW);
bitbang->mdc = devm_gpiod_get_index(dev, NULL, MDIO_GPIO_MDC,
GPIOD_OUT_LOW);
if (IS_ERR(bitbang->mdc))
return PTR_ERR(bitbang->mdc);
bitbang->mdio = devm_gpiod_get_index(dev, NULL, 1, GPIOD_IN);
bitbang->mdio = devm_gpiod_get_index(dev, NULL, MDIO_GPIO_MDIO,
GPIOD_IN);
if (IS_ERR(bitbang->mdio))
return PTR_ERR(bitbang->mdio);
bitbang->mdo = devm_gpiod_get_index_optional(dev, NULL, 2,
bitbang->mdo = devm_gpiod_get_index_optional(dev, NULL, MDIO_GPIO_MDO,
GPIOD_OUT_LOW);
return PTR_ERR_OR_ZERO(bitbang->mdo);
}

9
include/linux/mdio-gpio.h Normal file
View File

@ -0,0 +1,9 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_MDIO_GPIO_H
#define __LINUX_MDIO_GPIO_H
#define MDIO_GPIO_MDC 0
#define MDIO_GPIO_MDIO 1
#define MDIO_GPIO_MDO 2
#endif