u-boot/drivers/power/pmic/as3722_gpio.c
Masahiro Yamada 9b643e312d treewide: replace with error() with pr_err()
U-Boot widely uses error() as a bit noisier variant of printf().

This macro causes name conflict with the following line in
include/linux/compiler-gcc.h:

  # define __compiletime_error(message) __attribute__((error(message)))

This prevents us from using __compiletime_error(), and makes it
difficult to fully sync BUILD_BUG macros with Linux.  (Notice
Linux's BUILD_BUG_ON_MSG is implemented by using compiletime_assert().)

Let's convert error() into now treewide-available pr_err().

Done with the help of Coccinelle, excluing tools/ directory.

The semantic patch I used is as follows:

// <smpl>
@@@@
-error
+pr_err
 (...)
// </smpl>

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
[trini: Re-run Coccinelle]
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-10-04 11:59:44 -04:00

120 lines
2.3 KiB
C

/*
* Copyright (C) 2014 NVIDIA Corporation
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <asm/gpio.h>
#include <power/as3722.h>
#include <power/pmic.h>
#define NUM_GPIOS 8
int as3722_gpio_configure(struct udevice *pmic, unsigned int gpio,
unsigned long flags)
{
u8 value = 0;
int err;
if (flags & AS3722_GPIO_OUTPUT_VDDH)
value |= AS3722_GPIO_CONTROL_MODE_OUTPUT_VDDH;
if (flags & AS3722_GPIO_INVERT)
value |= AS3722_GPIO_CONTROL_INVERT;
err = pmic_reg_write(pmic, AS3722_GPIO_CONTROL(gpio), value);
if (err) {
pr_err("failed to configure GPIO#%u: %d", gpio, err);
return err;
}
return 0;
}
static int as3722_gpio_set_value(struct udevice *dev, unsigned int gpio,
int level)
{
struct udevice *pmic = dev_get_parent(dev);
const char *l;
u8 value;
int err;
if (gpio >= NUM_GPIOS)
return -EINVAL;
err = pmic_reg_read(pmic, AS3722_GPIO_SIGNAL_OUT);
if (err < 0) {
pr_err("failed to read GPIO signal out register: %d", err);
return err;
}
value = err;
if (level == 0) {
value &= ~(1 << gpio);
l = "low";
} else {
value |= 1 << gpio;
l = "high";
}
err = pmic_reg_write(pmic, AS3722_GPIO_SIGNAL_OUT, value);
if (err) {
pr_err("failed to set GPIO#%u %s: %d", gpio, l, err);
return err;
}
return 0;
}
int as3722_gpio_direction_output(struct udevice *dev, unsigned int gpio,
int value)
{
struct udevice *pmic = dev_get_parent(dev);
int err;
if (gpio > 7)
return -EINVAL;
if (value == 0)
value = AS3722_GPIO_CONTROL_MODE_OUTPUT_VDDL;
else
value = AS3722_GPIO_CONTROL_MODE_OUTPUT_VDDH;
err = pmic_reg_write(pmic, AS3722_GPIO_CONTROL(gpio), value);
if (err) {
pr_err("failed to configure GPIO#%u as output: %d", gpio, err);
return err;
}
err = as3722_gpio_set_value(pmic, gpio, value);
if (err < 0) {
pr_err("failed to set GPIO#%u high: %d", gpio, err);
return err;
}
return 0;
}
static int as3722_gpio_probe(struct udevice *dev)
{
struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
uc_priv->gpio_count = NUM_GPIOS;
uc_priv->bank_name = "as3722_";
return 0;
}
static const struct dm_gpio_ops gpio_as3722_ops = {
.direction_output = as3722_gpio_direction_output,
.set_value = as3722_gpio_set_value,
};
U_BOOT_DRIVER(gpio_as3722) = {
.name = "gpio_as3722",
.id = UCLASS_GPIO,
.ops = &gpio_as3722_ops,
.probe = as3722_gpio_probe,
};