mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 21:40:53 +07:00
aa9d842c5f
The kernel already has a function with this name declared in asm-generic/gpio.h. So if this header leaks into wm8350/gpio.c we get drivers/mfd/wm8350-gpio.c:40:12: error: conflicting types for 'gpio_set_debounce' include/asm-generic/gpio.h:156:12: note: previous declaration of 'gpio_set_debounce' was here Fix this by adding a wm8350_ prefix to the function. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
223 lines
6.1 KiB
C
223 lines
6.1 KiB
C
/*
|
|
* wm8350-core.c -- Device access for Wolfson WM8350
|
|
*
|
|
* Copyright 2007, 2008 Wolfson Microelectronics PLC.
|
|
*
|
|
* Author: Liam Girdwood
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/errno.h>
|
|
|
|
#include <linux/mfd/wm8350/core.h>
|
|
#include <linux/mfd/wm8350/gpio.h>
|
|
#include <linux/mfd/wm8350/pmic.h>
|
|
|
|
static int gpio_set_dir(struct wm8350 *wm8350, int gpio, int dir)
|
|
{
|
|
int ret;
|
|
|
|
wm8350_reg_unlock(wm8350);
|
|
if (dir == WM8350_GPIO_DIR_OUT)
|
|
ret = wm8350_clear_bits(wm8350,
|
|
WM8350_GPIO_CONFIGURATION_I_O,
|
|
1 << gpio);
|
|
else
|
|
ret = wm8350_set_bits(wm8350,
|
|
WM8350_GPIO_CONFIGURATION_I_O,
|
|
1 << gpio);
|
|
wm8350_reg_lock(wm8350);
|
|
return ret;
|
|
}
|
|
|
|
static int wm8350_gpio_set_debounce(struct wm8350 *wm8350, int gpio, int db)
|
|
{
|
|
if (db == WM8350_GPIO_DEBOUNCE_ON)
|
|
return wm8350_set_bits(wm8350, WM8350_GPIO_DEBOUNCE,
|
|
1 << gpio);
|
|
else
|
|
return wm8350_clear_bits(wm8350,
|
|
WM8350_GPIO_DEBOUNCE, 1 << gpio);
|
|
}
|
|
|
|
static int gpio_set_func(struct wm8350 *wm8350, int gpio, int func)
|
|
{
|
|
u16 reg;
|
|
|
|
wm8350_reg_unlock(wm8350);
|
|
switch (gpio) {
|
|
case 0:
|
|
reg = wm8350_reg_read(wm8350, WM8350_GPIO_FUNCTION_SELECT_1)
|
|
& ~WM8350_GP0_FN_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_GPIO_FUNCTION_SELECT_1,
|
|
reg | ((func & 0xf) << 0));
|
|
break;
|
|
case 1:
|
|
reg = wm8350_reg_read(wm8350, WM8350_GPIO_FUNCTION_SELECT_1)
|
|
& ~WM8350_GP1_FN_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_GPIO_FUNCTION_SELECT_1,
|
|
reg | ((func & 0xf) << 4));
|
|
break;
|
|
case 2:
|
|
reg = wm8350_reg_read(wm8350, WM8350_GPIO_FUNCTION_SELECT_1)
|
|
& ~WM8350_GP2_FN_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_GPIO_FUNCTION_SELECT_1,
|
|
reg | ((func & 0xf) << 8));
|
|
break;
|
|
case 3:
|
|
reg = wm8350_reg_read(wm8350, WM8350_GPIO_FUNCTION_SELECT_1)
|
|
& ~WM8350_GP3_FN_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_GPIO_FUNCTION_SELECT_1,
|
|
reg | ((func & 0xf) << 12));
|
|
break;
|
|
case 4:
|
|
reg = wm8350_reg_read(wm8350, WM8350_GPIO_FUNCTION_SELECT_2)
|
|
& ~WM8350_GP4_FN_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_GPIO_FUNCTION_SELECT_2,
|
|
reg | ((func & 0xf) << 0));
|
|
break;
|
|
case 5:
|
|
reg = wm8350_reg_read(wm8350, WM8350_GPIO_FUNCTION_SELECT_2)
|
|
& ~WM8350_GP5_FN_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_GPIO_FUNCTION_SELECT_2,
|
|
reg | ((func & 0xf) << 4));
|
|
break;
|
|
case 6:
|
|
reg = wm8350_reg_read(wm8350, WM8350_GPIO_FUNCTION_SELECT_2)
|
|
& ~WM8350_GP6_FN_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_GPIO_FUNCTION_SELECT_2,
|
|
reg | ((func & 0xf) << 8));
|
|
break;
|
|
case 7:
|
|
reg = wm8350_reg_read(wm8350, WM8350_GPIO_FUNCTION_SELECT_2)
|
|
& ~WM8350_GP7_FN_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_GPIO_FUNCTION_SELECT_2,
|
|
reg | ((func & 0xf) << 12));
|
|
break;
|
|
case 8:
|
|
reg = wm8350_reg_read(wm8350, WM8350_GPIO_FUNCTION_SELECT_3)
|
|
& ~WM8350_GP8_FN_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_GPIO_FUNCTION_SELECT_3,
|
|
reg | ((func & 0xf) << 0));
|
|
break;
|
|
case 9:
|
|
reg = wm8350_reg_read(wm8350, WM8350_GPIO_FUNCTION_SELECT_3)
|
|
& ~WM8350_GP9_FN_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_GPIO_FUNCTION_SELECT_3,
|
|
reg | ((func & 0xf) << 4));
|
|
break;
|
|
case 10:
|
|
reg = wm8350_reg_read(wm8350, WM8350_GPIO_FUNCTION_SELECT_3)
|
|
& ~WM8350_GP10_FN_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_GPIO_FUNCTION_SELECT_3,
|
|
reg | ((func & 0xf) << 8));
|
|
break;
|
|
case 11:
|
|
reg = wm8350_reg_read(wm8350, WM8350_GPIO_FUNCTION_SELECT_3)
|
|
& ~WM8350_GP11_FN_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_GPIO_FUNCTION_SELECT_3,
|
|
reg | ((func & 0xf) << 12));
|
|
break;
|
|
case 12:
|
|
reg = wm8350_reg_read(wm8350, WM8350_GPIO_FUNCTION_SELECT_4)
|
|
& ~WM8350_GP12_FN_MASK;
|
|
wm8350_reg_write(wm8350, WM8350_GPIO_FUNCTION_SELECT_4,
|
|
reg | ((func & 0xf) << 0));
|
|
break;
|
|
default:
|
|
wm8350_reg_lock(wm8350);
|
|
return -EINVAL;
|
|
}
|
|
|
|
wm8350_reg_lock(wm8350);
|
|
return 0;
|
|
}
|
|
|
|
static int gpio_set_pull_up(struct wm8350 *wm8350, int gpio, int up)
|
|
{
|
|
if (up)
|
|
return wm8350_set_bits(wm8350,
|
|
WM8350_GPIO_PIN_PULL_UP_CONTROL,
|
|
1 << gpio);
|
|
else
|
|
return wm8350_clear_bits(wm8350,
|
|
WM8350_GPIO_PIN_PULL_UP_CONTROL,
|
|
1 << gpio);
|
|
}
|
|
|
|
static int gpio_set_pull_down(struct wm8350 *wm8350, int gpio, int down)
|
|
{
|
|
if (down)
|
|
return wm8350_set_bits(wm8350,
|
|
WM8350_GPIO_PULL_DOWN_CONTROL,
|
|
1 << gpio);
|
|
else
|
|
return wm8350_clear_bits(wm8350,
|
|
WM8350_GPIO_PULL_DOWN_CONTROL,
|
|
1 << gpio);
|
|
}
|
|
|
|
static int gpio_set_polarity(struct wm8350 *wm8350, int gpio, int pol)
|
|
{
|
|
if (pol == WM8350_GPIO_ACTIVE_HIGH)
|
|
return wm8350_set_bits(wm8350,
|
|
WM8350_GPIO_PIN_POLARITY_TYPE,
|
|
1 << gpio);
|
|
else
|
|
return wm8350_clear_bits(wm8350,
|
|
WM8350_GPIO_PIN_POLARITY_TYPE,
|
|
1 << gpio);
|
|
}
|
|
|
|
static int gpio_set_invert(struct wm8350 *wm8350, int gpio, int invert)
|
|
{
|
|
if (invert == WM8350_GPIO_INVERT_ON)
|
|
return wm8350_set_bits(wm8350, WM8350_GPIO_INT_MODE, 1 << gpio);
|
|
else
|
|
return wm8350_clear_bits(wm8350,
|
|
WM8350_GPIO_INT_MODE, 1 << gpio);
|
|
}
|
|
|
|
int wm8350_gpio_config(struct wm8350 *wm8350, int gpio, int dir, int func,
|
|
int pol, int pull, int invert, int debounce)
|
|
{
|
|
/* make sure we never pull up and down at the same time */
|
|
if (pull == WM8350_GPIO_PULL_NONE) {
|
|
if (gpio_set_pull_up(wm8350, gpio, 0))
|
|
goto err;
|
|
if (gpio_set_pull_down(wm8350, gpio, 0))
|
|
goto err;
|
|
} else if (pull == WM8350_GPIO_PULL_UP) {
|
|
if (gpio_set_pull_down(wm8350, gpio, 0))
|
|
goto err;
|
|
if (gpio_set_pull_up(wm8350, gpio, 1))
|
|
goto err;
|
|
} else if (pull == WM8350_GPIO_PULL_DOWN) {
|
|
if (gpio_set_pull_up(wm8350, gpio, 0))
|
|
goto err;
|
|
if (gpio_set_pull_down(wm8350, gpio, 1))
|
|
goto err;
|
|
}
|
|
|
|
if (gpio_set_invert(wm8350, gpio, invert))
|
|
goto err;
|
|
if (gpio_set_polarity(wm8350, gpio, pol))
|
|
goto err;
|
|
if (wm8350_gpio_set_debounce(wm8350, gpio, debounce))
|
|
goto err;
|
|
if (gpio_set_dir(wm8350, gpio, dir))
|
|
goto err;
|
|
return gpio_set_func(wm8350, gpio, func);
|
|
|
|
err:
|
|
return -EIO;
|
|
}
|
|
EXPORT_SYMBOL_GPL(wm8350_gpio_config);
|