Release 4.14 arch/mips/bcm63xx/gpio.c
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
* Copyright (C) 2008-2011 Florian Fainelli <florian@openwrt.org>
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/platform_device.h>
#include <linux/gpio/driver.h>
#include <bcm63xx_cpu.h>
#include <bcm63xx_gpio.h>
#include <bcm63xx_io.h>
#include <bcm63xx_regs.h>
static u32 gpio_out_low_reg;
static void bcm63xx_gpio_out_low_reg_init(void)
{
switch (bcm63xx_get_cpu_id()) {
case BCM6345_CPU_ID:
gpio_out_low_reg = GPIO_DATA_LO_REG_6345;
break;
default:
gpio_out_low_reg = GPIO_DATA_LO_REG;
break;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Florian Fainelli | 29 | 100.00% | 1 | 100.00% |
| Total | 29 | 100.00% | 1 | 100.00% |
static DEFINE_SPINLOCK(bcm63xx_gpio_lock);
static u32 gpio_out_low, gpio_out_high;
static void bcm63xx_gpio_set(struct gpio_chip *chip,
unsigned gpio, int val)
{
u32 reg;
u32 mask;
u32 *v;
unsigned long flags;
if (gpio >= chip->ngpio)
BUG();
if (gpio < 32) {
reg = gpio_out_low_reg;
mask = 1 << gpio;
v = &gpio_out_low;
} else {
reg = GPIO_DATA_HI_REG;
mask = 1 << (gpio - 32);
v = &gpio_out_high;
}
spin_lock_irqsave(&bcm63xx_gpio_lock, flags);
if (val)
*v |= mask;
else
*v &= ~mask;
bcm_gpio_writel(*v, reg);
spin_unlock_irqrestore(&bcm63xx_gpio_lock, flags);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Maxime Bizon | 126 | 99.21% | 1 | 50.00% |
| Florian Fainelli | 1 | 0.79% | 1 | 50.00% |
| Total | 127 | 100.00% | 2 | 100.00% |
static int bcm63xx_gpio_get(struct gpio_chip *chip, unsigned gpio)
{
u32 reg;
u32 mask;
if (gpio >= chip->ngpio)
BUG();
if (gpio < 32) {
reg = gpio_out_low_reg;
mask = 1 << gpio;
} else {
reg = GPIO_DATA_HI_REG;
mask = 1 << (gpio - 32);
}
return !!(bcm_gpio_readl(reg) & mask);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Maxime Bizon | 77 | 98.72% | 1 | 50.00% |
| Florian Fainelli | 1 | 1.28% | 1 | 50.00% |
| Total | 78 | 100.00% | 2 | 100.00% |
static int bcm63xx_gpio_set_direction(struct gpio_chip *chip,
unsigned gpio, int dir)
{
u32 reg;
u32 mask;
u32 tmp;
unsigned long flags;
if (gpio >= chip->ngpio)
BUG();
if (gpio < 32) {
reg = GPIO_CTL_LO_REG;
mask = 1 << gpio;
} else {
reg = GPIO_CTL_HI_REG;
mask = 1 << (gpio - 32);
}
spin_lock_irqsave(&bcm63xx_gpio_lock, flags);
tmp = bcm_gpio_readl(reg);
if (dir == BCM63XX_GPIO_DIR_IN)
tmp &= ~mask;
else
tmp |= mask;
bcm_gpio_writel(tmp, reg);
spin_unlock_irqrestore(&bcm63xx_gpio_lock, flags);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Maxime Bizon | 124 | 99.20% | 1 | 50.00% |
| Florian Fainelli | 1 | 0.80% | 1 | 50.00% |
| Total | 125 | 100.00% | 2 | 100.00% |
static int bcm63xx_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
{
return bcm63xx_gpio_set_direction(chip, gpio, BCM63XX_GPIO_DIR_IN);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Maxime Bizon | 23 | 95.83% | 1 | 50.00% |
| Florian Fainelli | 1 | 4.17% | 1 | 50.00% |
| Total | 24 | 100.00% | 2 | 100.00% |
static int bcm63xx_gpio_direction_output(struct gpio_chip *chip,
unsigned gpio, int value)
{
bcm63xx_gpio_set(chip, gpio, value);
return bcm63xx_gpio_set_direction(chip, gpio, BCM63XX_GPIO_DIR_OUT);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Maxime Bizon | 35 | 97.22% | 1 | 50.00% |
| Florian Fainelli | 1 | 2.78% | 1 | 50.00% |
| Total | 36 | 100.00% | 2 | 100.00% |
static struct gpio_chip bcm63xx_gpio_chip = {
.label = "bcm63xx-gpio",
.direction_input = bcm63xx_gpio_direction_input,
.direction_output = bcm63xx_gpio_direction_output,
.get = bcm63xx_gpio_get,
.set = bcm63xx_gpio_set,
.base = 0,
};
int __init bcm63xx_gpio_init(void)
{
bcm63xx_gpio_out_low_reg_init();
gpio_out_low = bcm_gpio_readl(gpio_out_low_reg);
if (!BCMCPU_IS_6345())
gpio_out_high = bcm_gpio_readl(GPIO_DATA_HI_REG);
bcm63xx_gpio_chip.ngpio = bcm63xx_gpio_count();
pr_info("registering %d GPIOs\n", bcm63xx_gpio_chip.ngpio);
return gpiochip_add_data(&bcm63xx_gpio_chip, NULL);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Maxime Bizon | 43 | 76.79% | 2 | 50.00% |
| Florian Fainelli | 10 | 17.86% | 1 | 25.00% |
| Linus Walleij | 3 | 5.36% | 1 | 25.00% |
| Total | 56 | 100.00% | 4 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Maxime Bizon | 502 | 90.29% | 2 | 33.33% |
| Florian Fainelli | 49 | 8.81% | 2 | 33.33% |
| Linus Walleij | 4 | 0.72% | 1 | 16.67% |
| Paul Gortmaker | 1 | 0.18% | 1 | 16.67% |
| Total | 556 | 100.00% | 6 | 100.00% |
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