Release 4.10 drivers/gpio/gpio-pca953x.c

Directory: drivers/gpio
/*
 *  PCA953x 4/8/16/24/40 bit I/O ports
 *
 *  Copyright (C) 2005 Ben Gardner <bgardner@wabtec.com>
 *  Copyright (C) 2007 Marvell International Ltd.
 *
 *  Derived from drivers/i2c/chips/pca9539.c
 *
 *  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; version 2 of the License.
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/gpio.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/platform_data/pca953x.h>
#include <linux/slab.h>
#include <asm/unaligned.h>
#include <linux/of_platform.h>
#include <linux/acpi.h>
#include <linux/regulator/consumer.h>


#define PCA953X_INPUT		0

#define PCA953X_OUTPUT		1

#define PCA953X_INVERT		2

#define PCA953X_DIRECTION	3


#define REG_ADDR_AI		0x80


#define PCA957X_IN		0

#define PCA957X_INVRT		1

#define PCA957X_BKEN		2

#define PCA957X_PUPD		3

#define PCA957X_CFG		4

#define PCA957X_OUT		5

#define PCA957X_MSK		6

#define PCA957X_INTS		7


#define PCAL953X_IN_LATCH	34

#define PCAL953X_INT_MASK	37

#define PCAL953X_INT_STAT	38


#define PCA_GPIO_MASK		0x00FF

#define PCA_INT			0x0100

#define PCA_PCAL		0x0200

#define PCA953X_TYPE		0x1000

#define PCA957X_TYPE		0x2000

#define PCA_TYPE_MASK		0xF000


#define PCA_CHIP_TYPE(x)	((x) & PCA_TYPE_MASK)


static const struct i2c_device_id pca953x_id[] = {
	{ "pca9505", 40 | PCA953X_TYPE | PCA_INT, },
	{ "pca9534", 8  | PCA953X_TYPE | PCA_INT, },
	{ "pca9535", 16 | PCA953X_TYPE | PCA_INT, },
	{ "pca9536", 4  | PCA953X_TYPE, },
	{ "pca9537", 4  | PCA953X_TYPE | PCA_INT, },
	{ "pca9538", 8  | PCA953X_TYPE | PCA_INT, },
	{ "pca9539", 16 | PCA953X_TYPE | PCA_INT, },
	{ "pca9554", 8  | PCA953X_TYPE | PCA_INT, },
	{ "pca9555", 16 | PCA953X_TYPE | PCA_INT, },
	{ "pca9556", 8  | PCA953X_TYPE, },
	{ "pca9557", 8  | PCA953X_TYPE, },
	{ "pca9574", 8  | PCA957X_TYPE | PCA_INT, },
	{ "pca9575", 16 | PCA957X_TYPE | PCA_INT, },
	{ "pca9698", 40 | PCA953X_TYPE, },

	{ "pcal9555a", 16 | PCA953X_TYPE | PCA_INT | PCA_PCAL, },

	{ "max7310", 8  | PCA953X_TYPE, },
	{ "max7312", 16 | PCA953X_TYPE | PCA_INT, },
	{ "max7313", 16 | PCA953X_TYPE | PCA_INT, },
	{ "max7315", 8  | PCA953X_TYPE | PCA_INT, },
	{ "max7318", 16 | PCA953X_TYPE | PCA_INT, },
	{ "pca6107", 8  | PCA953X_TYPE | PCA_INT, },
	{ "tca6408", 8  | PCA953X_TYPE | PCA_INT, },
	{ "tca6416", 16 | PCA953X_TYPE | PCA_INT, },
	{ "tca6424", 24 | PCA953X_TYPE | PCA_INT, },
	{ "tca9539", 16 | PCA953X_TYPE | PCA_INT, },
	{ "xra1202", 8  | PCA953X_TYPE },
	{ }
};
MODULE_DEVICE_TABLE(i2c, pca953x_id);


static const struct acpi_device_id pca953x_acpi_ids[] = {
	{ "INT3491", 16 | PCA953X_TYPE | PCA_INT | PCA_PCAL, },
	{ }
};
MODULE_DEVICE_TABLE(acpi, pca953x_acpi_ids);


#define MAX_BANK 5

#define BANK_SZ 8


#define NBANK(chip) DIV_ROUND_UP(chip->gpio_chip.ngpio, BANK_SZ)


struct pca953x_reg_config {
	
int direction;
	
int output;
	
int input;
};


static const struct pca953x_reg_config pca953x_regs = {
	.direction = PCA953X_DIRECTION,
	.output = PCA953X_OUTPUT,
	.input = PCA953X_INPUT,
};


static const struct pca953x_reg_config pca957x_regs = {
	.direction = PCA957X_CFG,
	.output = PCA957X_OUT,
	.input = PCA957X_IN,
};


struct pca953x_chip {
	
unsigned gpio_start;
	
u8 reg_output[MAX_BANK];
	
u8 reg_direction[MAX_BANK];
	
struct mutex i2c_lock;

#ifdef CONFIG_GPIO_PCA953X_IRQ
	
struct mutex irq_lock;
	
u8 irq_mask[MAX_BANK];
	
u8 irq_stat[MAX_BANK];
	
u8 irq_trig_raise[MAX_BANK];
	
u8 irq_trig_fall[MAX_BANK];
#endif

	
struct i2c_client *client;
	
struct gpio_chip gpio_chip;
	
const char *const *names;
	
unsigned long driver_data;
	
struct regulator *regulator;

	
const struct pca953x_reg_config *regs;

	
int (*write_regs)(struct pca953x_chip *, int, u8 *);
	
int (*read_regs)(struct pca953x_chip *, int, u8 *);
};



static int pca953x_read_single(struct pca953x_chip *chip, int reg, u32 *val,
				int off)
{
	int ret;
	int bank_shift = fls((chip->gpio_chip.ngpio - 1) / BANK_SZ);
	int offset = off / BANK_SZ;

	ret = i2c_smbus_read_byte_data(chip->client,
				(reg << bank_shift) + offset);
	*val = ret;

	if (ret < 0) {
		dev_err(&chip->client->dev, "failed reading register\n");
		return ret;
	}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
gregory clement gregory clement 97 100.00% 1 100.00%
Total 97 100.00% 1 100.00%



static int pca953x_write_single(struct pca953x_chip *chip, int reg, u32 val,
				int off)
{
	int ret;
	int bank_shift = fls((chip->gpio_chip.ngpio - 1) / BANK_SZ);
	int offset = off / BANK_SZ;

	ret = i2c_smbus_write_byte_data(chip->client,
					(reg << bank_shift) + offset, val);

	if (ret < 0) {
		dev_err(&chip->client->dev, "failed writing register\n");
		return ret;
	}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
gregory clement gregory clement 80 86.02% 1 25.00%
eric miao eric miao 11 11.83% 1 25.00%
andreas schallenberg andreas schallenberg 1 1.08% 1 25.00%
guennadi liakhovetski guennadi liakhovetski 1 1.08% 1 25.00%
Total 93 100.00% 4 100.00%



static int pca953x_write_regs_8(struct pca953x_chip *chip, int reg, u8 *val)
{
	return i2c_smbus_write_byte_data(chip->client, reg, *val);
}

Contributors
Person Tokens Prop Commits CommitProp
gregory clement gregory clement 15 48.39% 1 25.00%
guennadi liakhovetski guennadi liakhovetski 10 32.26% 1 25.00%
bartosz golaszewski bartosz golaszewski 4 12.90% 1 25.00%
eric miao eric miao 2 6.45% 1 25.00%
Total 31 100.00% 4 100.00%



static int pca953x_write_regs_16(struct pca953x_chip *chip, int reg, u8 *val)
{
	__le16 word = cpu_to_le16(get_unaligned((u16 *)val));

	return i2c_smbus_write_word_data(chip->client,
					 reg << 1, (__force u16)word);
}

Contributors
Person Tokens Prop Commits CommitProp
andy shevchenko andy shevchenko 19 37.25% 1 12.50%
bartosz golaszewski bartosz golaszewski 14 27.45% 1 12.50%
eric miao eric miao 8 15.69% 1 12.50%
andreas schallenberg andreas schallenberg 3 5.88% 2 25.00%
gregory clement gregory clement 3 5.88% 1 12.50%
yong li yong li 2 3.92% 1 12.50%
guennadi liakhovetski guennadi liakhovetski 2 3.92% 1 12.50%
Total 51 100.00% 8 100.00%



static int pca957x_write_regs_16(struct pca953x_chip *chip, int reg, u8 *val)
{
	int ret;

	ret = i2c_smbus_write_byte_data(chip->client, reg << 1, val[0]);
	if (ret < 0)
		return ret;

	return i2c_smbus_write_byte_data(chip->client, (reg << 1) + 1, val[1]);
}

Contributors
Person Tokens Prop Commits CommitProp
haojian zhuang haojian zhuang 39 56.52% 1 33.33%
bartosz golaszewski bartosz golaszewski 24 34.78% 1 33.33%
gregory clement gregory clement 6 8.70% 1 33.33%
Total 69 100.00% 3 100.00%



static int pca953x_write_regs_24(struct pca953x_chip *chip, int reg, u8 *val)
{
	int bank_shift = fls((chip->gpio_chip.ngpio - 1) / BANK_SZ);

	return i2c_smbus_write_i2c_block_data(chip->client,
					      (reg << bank_shift) | REG_ADDR_AI,
					      NBANK(chip), val);
}

Contributors
Person Tokens Prop Commits CommitProp
bartosz golaszewski bartosz golaszewski 58 98.31% 1 50.00%
haojian zhuang haojian zhuang 1 1.69% 1 50.00%
Total 59 100.00% 2 100.00%



static int pca953x_write_regs(struct pca953x_chip *chip, int reg, u8 *val)
{
	int ret = 0;

	ret = chip->write_regs(chip, reg, val);
	if (ret < 0) {
		dev_err(&chip->client->dev, "failed writing register\n");
		return ret;
	}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
bartosz golaszewski bartosz golaszewski 35 56.45% 1 25.00%
guennadi liakhovetski guennadi liakhovetski 17 27.42% 1 25.00%
eric miao eric miao 9 14.52% 1 25.00%
david brownell david brownell 1 1.61% 1 25.00%
Total 62 100.00% 4 100.00%



static int pca953x_read_regs_8(struct pca953x_chip *chip, int reg, u8 *val)
{
	int ret;

	ret = i2c_smbus_read_byte_data(chip->client, reg);
	*val = ret;

	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
eric miao eric miao 17 42.50% 1 16.67%
guennadi liakhovetski guennadi liakhovetski 12 30.00% 2 33.33%
andreas schallenberg andreas schallenberg 6 15.00% 1 16.67%
bartosz golaszewski bartosz golaszewski 4 10.00% 1 16.67%
gregory clement gregory clement 1 2.50% 1 16.67%
Total 40 100.00% 6 100.00%



static int pca953x_read_regs_16(struct pca953x_chip *chip, int reg, u8 *val)
{
	int ret;

	ret = i2c_smbus_read_word_data(chip->client, reg << 1);
	val[0] = (u16)ret & 0xFF;
	val[1] = (u16)ret >> 8;

	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
bartosz golaszewski bartosz golaszewski 59 96.72% 1 50.00%
andreas schallenberg andreas schallenberg 2 3.28% 1 50.00%
Total 61 100.00% 2 100.00%



static int pca953x_read_regs_24(struct pca953x_chip *chip, int reg, u8 *val)
{
	int bank_shift = fls((chip->gpio_chip.ngpio - 1) / BANK_SZ);

	return i2c_smbus_read_i2c_block_data(chip->client,
					     (reg << bank_shift) | REG_ADDR_AI,
					     NBANK(chip), val);
}

Contributors
Person Tokens Prop Commits CommitProp
gregory clement gregory clement 23 38.98% 1 25.00%
bartosz golaszewski bartosz golaszewski 18 30.51% 1 25.00%
andreas schallenberg andreas schallenberg 18 30.51% 2 50.00%
Total 59 100.00% 4 100.00%



static int pca953x_read_regs(struct pca953x_chip *chip, int reg, u8 *val)
{
	int ret;

	ret = chip->read_regs(chip, reg, val);
	if (ret < 0) {
		dev_err(&chip->client->dev, "failed reading register\n");
		return ret;
	}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
eric miao eric miao 32 53.33% 1 20.00%
bartosz golaszewski bartosz golaszewski 24 40.00% 1 20.00%
andreas schallenberg andreas schallenberg 2 3.33% 1 20.00%
gregory clement gregory clement 1 1.67% 1 20.00%
david brownell david brownell 1 1.67% 1 20.00%
Total 60 100.00% 5 100.00%



static int pca953x_gpio_direction_input(struct gpio_chip *gc, unsigned off)
{
	struct pca953x_chip *chip = gpiochip_get_data(gc);
	u8 reg_val;
	int ret;

	mutex_lock(&chip->i2c_lock);
	reg_val = chip->reg_direction[off / BANK_SZ] | (1u << (off % BANK_SZ));

	ret = pca953x_write_single(chip, chip->regs->direction, reg_val, off);
	if (ret)
		goto exit;

	chip->reg_direction[off / BANK_SZ] = reg_val;
exit:
	mutex_unlock(&chip->i2c_lock);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
eric miao eric miao 54 50.47% 1 14.29%
roland stigge roland stigge 23 21.50% 1 14.29%
gregory clement gregory clement 18 16.82% 1 14.29%
linus walleij linus walleij 5 4.67% 2 28.57%
bartosz golaszewski bartosz golaszewski 5 4.67% 1 14.29%
guennadi liakhovetski guennadi liakhovetski 2 1.87% 1 14.29%
Total 107 100.00% 7 100.00%



static int pca953x_gpio_direction_output(struct gpio_chip *gc,
		unsigned off, int val)
{
	struct pca953x_chip *chip = gpiochip_get_data(gc);
	u8 reg_val;
	int ret;

	mutex_lock(&chip->i2c_lock);
	/* set output level */
	if (val)
		reg_val = chip->reg_output[off / BANK_SZ]
			| (1u << (off % BANK_SZ));
	else
		reg_val = chip->reg_output[off / BANK_SZ]
			& ~(1u << (off % BANK_SZ));

	ret = pca953x_write_single(chip, chip->regs->output, reg_val, off);
	if (ret)
		goto exit;

	chip->reg_output[off / BANK_SZ] = reg_val;

	/* then direction */
	reg_val = chip->reg_direction[off / BANK_SZ] & ~(1u << (off % BANK_SZ));
	ret = pca953x_write_single(chip, chip->regs->direction, reg_val, off);
	if (ret)
		goto exit;

	chip->reg_direction[off / BANK_SZ] = reg_val;
exit:
	mutex_unlock(&chip->i2c_lock);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
eric miao eric miao 109 55.61% 1 14.29%
gregory clement gregory clement 44 22.45% 1 14.29%
roland stigge roland stigge 26 13.27% 1 14.29%
bartosz golaszewski bartosz golaszewski 10 5.10% 1 14.29%
linus walleij linus walleij 5 2.55% 2 28.57%
guennadi liakhovetski guennadi liakhovetski 2 1.02% 1 14.29%
Total 196 100.00% 7 100.00%



static int pca953x_gpio_get_value(struct gpio_chip *gc, unsigned off)
{
	struct pca953x_chip *chip = gpiochip_get_data(gc);
	u32 reg_val;
	int ret;

	mutex_lock(&chip->i2c_lock);
	ret = pca953x_read_single(chip, chip->regs->input, &reg_val, off);
	mutex_unlock(&chip->i2c_lock);
	if (ret < 0) {
		/* NOTE:  diagnostic already emitted; that's all we should
                 * do unless gpio_*_value_cansleep() calls become different
                 * from their nonsleeping siblings (and report faults).
                 */
		return 0;
	}

	return (reg_val & (1u << (off % BANK_SZ))) ? 1 : 0;
}

Contributors
Person Tokens Prop Commits CommitProp
eric miao eric miao 59 62.11% 1 11.11%
roland stigge roland stigge 16 16.84% 1 11.11%
bartosz golaszewski bartosz golaszewski 5 5.26% 1 11.11%
linus walleij linus walleij 5 5.26% 2 22.22%
andrew ruder andrew ruder 4 4.21% 1 11.11%
gregory clement gregory clement 3 3.16% 1 11.11%
guennadi liakhovetski guennadi liakhovetski 2 2.11% 1 11.11%
andreas schallenberg andreas schallenberg 1 1.05% 1 11.11%
Total 95 100.00% 9 100.00%



static void pca953x_gpio_set_value(struct gpio_chip *gc, unsigned off, int val)
{
	struct pca953x_chip *chip = gpiochip_get_data(gc);
	u8 reg_val;
	int ret;

	mutex_lock(&chip->i2c_lock);
	if (val)
		reg_val = chip->reg_output[off / BANK_SZ]
			| (1u << (off % BANK_SZ));
	else
		reg_val = chip->reg_output[off / BANK_SZ]
			& ~(1u << (off % BANK_SZ));

	ret = pca953x_write_single(chip, chip->regs->output, reg_val, off);
	if (ret)
		goto exit;

	chip->reg_output[off / BANK_SZ] = reg_val;
exit:
	mutex_unlock(&chip->i2c_lock);
}

Contributors
Person Tokens Prop Commits CommitProp
eric miao eric miao 74 55.22% 1 14.29%
gregory clement gregory clement 27 20.15% 1 14.29%
roland stigge roland stigge 21 15.67% 1 14.29%
bartosz golaszewski bartosz golaszewski 5 3.73% 1 14.29%
linus walleij linus walleij 5 3.73% 2 28.57%
guennadi liakhovetski guennadi liakhovetski 2 1.49% 1 14.29%
Total 134 100.00% 7 100.00%



static void pca953x_gpio_set_multiple(struct gpio_chip *gc,
				      unsigned long *mask, unsigned long *bits)
{
	struct pca953x_chip *chip = gpiochip_get_data(gc);
	unsigned int bank_mask, bank_val;
	int bank_shift, bank;
	u8 reg_val[MAX_BANK];
	int ret;

	bank_shift = fls((chip->gpio_chip.ngpio - 1) / BANK_SZ);

	mutex_lock(&chip->i2c_lock);
	memcpy(reg_val, chip->reg_output, NBANK(chip));
	for (bank = 0; bank < NBANK(chip); bank++) {
		bank_mask = mask[bank / sizeof(*mask)] >>
			   ((bank % sizeof(*mask)) * 8);
		if (bank_mask) {
			bank_val = bits[bank / sizeof(*bits)] >>
				  ((bank % sizeof(*bits)) * 8);
			bank_val &= bank_mask;
			reg_val[bank] = (reg_val[bank] & ~bank_mask) | bank_val;
		}
	}

	ret = i2c_smbus_write_i2c_block_data(chip->client,
					     chip->regs->output << bank_shift,
					     NBANK(chip), reg_val);
	if (ret)
		goto exit;

	memcpy(chip->reg_output, reg_val, NBANK(chip));
exit:
	mutex_unlock(&chip->i2c_lock);
}

Contributors
Person Tokens Prop Commits CommitProp
phil reid phil reid 196 80.33% 3 42.86%
bartosz golaszewski bartosz golaszewski 27 11.07% 2 28.57%
geert uytterhoeven geert uytterhoeven 20 8.20% 1 14.29%
linus walleij linus walleij 1 0.41% 1 14.29%
Total 244 100.00% 7 100.00%



static void pca953x_setup_gpio(struct pca953x_chip *chip, int gpios)
{
	struct gpio_chip *gc;

	gc = &chip->gpio_chip;

	gc->direction_input  = pca953x_gpio_direction_input;
	gc->direction_output = pca953x_gpio_direction_output;
	gc->get = pca953x_gpio_get_value;
	gc->set = pca953x_gpio_set_value;
	gc->set_multiple = pca953x_gpio_set_multiple;
	gc->can_sleep = true;

	gc->base = chip->gpio_start;
	gc->ngpio = gpios;
	gc->label = chip->client->name;
	gc->parent = &chip->client->dev;
	gc->owner = THIS_MODULE;
	gc->names = chip->names;
}

Contributors
Person Tokens Prop Commits CommitProp
eric miao eric miao 58 52.25% 1 10.00%
guennadi liakhovetski guennadi liakhovetski 22 19.82% 3 30.00%
david brownell david brownell 10 9.01% 1 10.00%
daniel silverstone daniel silverstone 8 7.21% 1 10.00%
phil reid phil reid 6 5.41% 1 10.00%
arnaud patard arnaud patard 5 4.50% 1 10.00%
linus walleij linus walleij 2 1.80% 2 20.00%
Total 111 100.00% 10 100.00%

#ifdef CONFIG_GPIO_PCA953X_IRQ


static void pca953x_irq_mask(struct irq_data *d)
{
	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
	struct pca953x_chip *chip = gpiochip_get_data(gc);

	chip->irq_mask[d->hwirq / BANK_SZ] &= ~(1 << (d->hwirq % BANK_SZ));
}

Contributors
Person Tokens Prop Commits CommitProp
marc zyngier marc zyngier 20 36.36% 1 12.50%
linus walleij linus walleij 12 21.82% 2 25.00%
gregory clement gregory clement 11 20.00% 1 12.50%
lennert buytenhek lennert buytenhek 8 14.55% 1 12.50%
nate case nate case 2 3.64% 1 12.50%
eric miao eric miao 1 1.82% 1 12.50%
maxime ripard maxime ripard 1 1.82% 1 12.50%
Total 55 100.00% 8 100.00%



static void pca953x_irq_unmask(struct irq_data *d)
{
	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
	struct pca953x_chip *chip = gpiochip_get_data(gc);

	chip->irq_mask[d->hwirq / BANK_SZ] |= 1 << (d->hwirq % BANK_SZ);
}

Contributors
Person Tokens Prop Commits CommitProp
marc zyngier marc zyngier 14 26.92% 1 12.50%
linus walleij linus walleij 12 23.08% 2 25.00%
gregory clement gregory clement 11 21.15% 1 12.50%
lennert buytenhek lennert buytenhek 8 15.38% 1 12.50%
ben dooks ben dooks 3 5.77% 1 12.50%
nate case nate case 3 5.77% 1 12.50%
maxime ripard maxime ripard 1 1.92% 1 12.50%
Total 52 100.00% 8 100.00%



static void pca953x_irq_bus_lock(struct irq_data *d)
{
	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
	struct pca953x_chip *chip = gpiochip_get_data(gc);

	mutex_lock(&chip->irq_lock);
}

Contributors
Person Tokens Prop Commits CommitProp
marc zyngier marc zyngier 13 33.33% 1 20.00%
linus walleij linus walleij 12 30.77% 2 40.00%
nate case nate case 8 20.51% 1 20.00%
lennert buytenhek lennert buytenhek 6 15.38% 1 20.00%
Total 39 100.00% 5 100.00%



static void pca953x_irq_bus_sync_unlock(struct irq_data *d)
{
	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
	struct pca953x_chip *chip = gpiochip_get_data(gc);
	u8 new_irqs;
	int level, i;
	u8 invert_irq_mask[MAX_BANK];

	if (chip->driver_data & PCA_PCAL) {
		/* Enable latch on interrupt-enabled inputs */
		pca953x_write_regs(chip, PCAL953X_IN_LATCH, chip->irq_mask);

		for (i = 0; i < NBANK(chip); i++)
			invert_irq_mask[i] = ~chip->irq_mask[i];

		/* Unmask enabled interrupts */
		pca953x_write_regs(chip, PCAL953X_INT_MASK, invert_irq_mask);
	}

	/* Look for any newly setup interrupt */
	for (i = 0; i < NBANK(chip); i++) {
		new_irqs = chip->irq_trig_fall[i] | chip->irq_trig_raise[i];
		new_irqs &= ~chip->reg_direction[i];

		while (new_irqs) {
			level = __ffs(new_irqs);
			pca953x_gpio_direction_input(&chip->gpio_chip,
							level + (BANK_SZ * i));
			new_irqs &= ~(1 << level);
		}
	}

	mutex_unlock(&chip->irq_lock);
}

Contributors
Person Tokens Prop Commits CommitProp
marc zyngier marc zyngier 75 38.07% 2 28.57%
yong li yong li 67 34.01% 1 14.29%
gregory clement gregory clement 37 18.78% 1 14.29%
linus walleij linus walleij 12 6.09% 2 28.57%
lennert buytenhek lennert buytenhek 6 3.05% 1 14.29%
Total 197 100.00% 7 100.00%



static int pca953x_irq_set_type(struct irq_data *d, unsigned int type)
{
	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
	struct pca953x_chip *chip = gpiochip_get_data(gc);
	int bank_nb = d->hwirq / BANK_SZ;
	u8 mask = 1 << (d->hwirq % BANK_SZ);

	if (!(type & IRQ_TYPE_EDGE_BOTH)) {
		dev_err(&chip->client->dev, "irq %d: unsupported type %d\n",
			d->irq, type);
		return -EINVAL;
	}

	if (type & IRQ_TYPE_EDGE_FALLING)
		chip->irq_trig_fall[bank_nb] |= mask;
	else
		chip->irq_trig_fall[bank_nb] &= ~mask;

	if (type & IRQ_TYPE_EDGE_RISING)
		chip->irq_trig_raise[bank_nb] |= mask;
	else
		chip->irq_trig_raise[bank_nb] &= ~mask;

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
marc zyngier marc zyngier 96 66.21% 2 28.57%
gregory clement gregory clement 26 17.93% 1 14.29%
linus walleij linus walleij 12 8.28% 2 28.57%
lennert buytenhek lennert buytenhek 8 5.52% 1 14.29%
maxime ripard maxime ripard 3 2.07% 1 14.29%
Total 145 100.00% 7 100.00%


static struct irq_chip pca953x_irq_chip = {
	.name			= "pca953x",
	.irq_mask		= pca953x_irq_mask,
	.irq_unmask		= pca953x_irq_unmask,
	.irq_bus_lock		= pca953x_irq_bus_lock,
	.irq_bus_sync_unlock	= pca953x_irq_bus_sync_unlock,
	.irq_set_type		= pca953x_irq_set_type,
};



static bool pca953x_irq_pending(struct pca953x_chip *chip, u8 *pending)
{
	u8 cur_stat[MAX_BANK];
	u8 old_stat[MAX_BANK];
	bool pending_seen = false;
	bool trigger_seen = false;
	u8 trigger[MAX_BANK];
	int ret, i;

	if (chip->driver_data & PCA_PCAL) {
		/* Read the current interrupt status from the device */
		ret = pca953x_read_regs(chip, PCAL953X_INT_STAT, trigger);
		if (ret)
			return false;

		/* Check latched inputs and clear interrupt status */
		ret = pca953x_read_regs(chip, PCA953X_INPUT, cur_stat);
		if (ret)
			return false;

		for (i = 0; i < NBANK(chip); i++) {
			/* Apply filter for rising/falling edge selection */
			pending[i] = (~cur_stat[i] & chip->irq_trig_fall[i]) |
				(cur_stat[i] & chip->irq_trig_raise[i]);
			pending[i] &= trigger[i];
			if (pending[i])
				pending_seen = true;
		}

		return pending_seen;
	}

	ret = pca953x_read_regs(chip, chip->regs->input, cur_stat);
	if (ret)
		return false;

	/* Remove output pins from the equation */
	for (i = 0; i < NBANK(chip); i++)
		cur_stat[i] &= chip->reg_direction[i];

	memcpy(old_stat, chip->irq_stat, NBANK(chip));

	for (i = 0; i < NBANK(chip); i++) {
		trigger[i] = (cur_stat[i] ^ old_stat[i]) & chip->irq_mask[i];
		if (trigger[i])
			trigger_seen = true;
	}

	if (!trigger_seen)
		return false;

	memcpy(chip->irq_stat, cur_stat, NBANK(chip));

	for (i = 0; i < NBANK(chip); i++) {
		pending[i] = (old_stat[i] & chip->irq_trig_fall[i]) |
			(cur_stat[i] & chip->irq_trig_raise[i]);
		pending[i] &= trigger[i];
		if (pending[i])
			pending_seen = true;
	}

	return pending_seen;
}

Contributors
Person Tokens Prop Commits CommitProp
gregory clement gregory clement 138 35.57% 1 16.67%
yong li yong li 125 32.22% 1 16.67%
marc zyngier marc zyngier 94 24.23% 1 16.67%
joshua scott joshua scott 25 6.44% 1 16.67%
bartosz golaszewski bartosz golaszewski 5 1.29% 1 16.67%
haojian zhuang haojian zhuang 1 0.26% 1 16.67%
Total 388 100.00% 6 100.00%



static irqreturn_t pca953x_irq_handler(int irq, void *devid)
{
	struct pca953x_chip *chip = devid;
	u8 pending[MAX_BANK];
	u8 level;
	unsigned nhandled = 0;
	int i;

	if (!pca953x_irq_pending(chip, pending))
		return IRQ_NONE;

	for (i = 0; i < NBANK(chip); i++) {
		while (pending[i]) {
			level = __ffs(pending[i]);
			handle_nested_irq(irq_find_mapping(chip->gpio_chip.irqdomain,
							level + (BANK_SZ * i)));
			pending[i] &= ~(1 << level);
			nhandled++;
		}
	}

	return (nhandled > 0) ? IRQ_HANDLED : IRQ_NONE;
}

Contributors
Person Tokens Prop Commits CommitProp
marc zyngier marc zyngier 57 42.86% 1 16.67%
gregory clement gregory clement 50 37.59% 1 16.67%
toby smith toby smith 17 12.78% 1 16.67%
maxime ripard maxime ripard 5 3.76% 1 16.67%
linus walleij linus walleij 3 2.26% 1 16.67%
david jander david jander 1 0.75% 1 16.67%
Total 133 100.00% 6 100.00%



static int pca953x_irq_setup(struct pca953x_chip *chip,
			     int irq_base)
{
	struct i2c_client *client = chip->client;
	int ret, i;

	if (client->irq && irq_base != -1
			&& (chip->driver_data & PCA_INT)) {
		ret = pca953x_read_regs(chip,
					chip->regs->input, chip->irq_stat);
		if (ret)
			return ret;

		/*
                 * There is no way to know which GPIO line generated the
                 * interrupt.  We have to rely on the previous read for
                 * this purpose.
                 */
		for (i = 0; i < NBANK(chip); i++)
			chip->irq_stat[i] &= chip->reg_direction[i];
		mutex_init(&chip->irq_lock);

		ret = devm_request_threaded_irq(&client->dev,
					client->irq,
					   NULL,
					   pca953x_irq_handler,
					   IRQF_TRIGGER_LOW | IRQF_ONESHOT |
						   IRQF_SHARED,
					   dev_name(&client->dev), chip);
		if (ret) {
			dev_err(&client->dev, "failed to request irq %d\n",
				client->irq);
			return ret;
		}

		ret =  gpiochip_irqchip_add_nested(&chip->gpio_chip,
						   &pca953x_irq_chip,
						   irq_base,
						   handle_simple_irq,
						   IRQ_TYPE_NONE);
		if (ret) {
			dev_err(&client->dev,
				"could not connect irqchip to gpiochip\n");
			return ret;
		}

		gpiochip_set_nested_irqchip(&chip->gpio_chip,
					    &pca953x_irq_chip,
					    client->irq);
	}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
marc zyngier marc zyngier 111 49.33% 1 6.25%
linus walleij linus walleij 44 19.56% 3 18.75%
gregory clement gregory clement 28 12.44% 2 12.50%
grygorii strashko grygorii strashko 14 6.22% 1 6.25%
david jander david jander 11 4.89% 3 18.75%
bartosz golaszewski bartosz golaszewski 5 2.22% 1 6.25%
markus pargmann markus pargmann 4 1.78% 1 6.25%
alek du alek du 3 1.33% 1 6.25%
haojian zhuang haojian zhuang 2 0.89% 1 6.25%
toby smith toby smith 2 0.89% 1 6.25%
andy shevchenko andy shevchenko 1 0.44% 1 6.25%
Total 225 100.00% 16 100.00%

#else /* CONFIG_GPIO_PCA953X_IRQ */


static int pca953x_irq_setup(struct pca953x_chip *chip,
			     int irq_base)
{
	struct i2c_client *client = chip->client;

	if (irq_base != -1 && (chip->driver_data & PCA_INT))
		dev_warn(&client->dev, "interrupt support not compiled in\n");

	return 0;
}
Contributors
Person Tokens Prop Commits CommitProp
marc zyngier marc zyngier 44 86.27% 1 20.00%
alek du alek du 3 5.88% 1 20.00%
david jander david jander 2 3.92% 1 20.00%
haojian zhuang haojian zhuang 1 1.96% 1 20.00%
andy shevchenko andy shevchenko 1 1.96% 1 20.00%
Total 51 100.00% 5 100.00%

#endif



static int device_pca953x_init(struct pca953x_chip *chip, u32 invert)
{
	int ret;
	u8 val[MAX_BANK];

	chip->regs = &pca953x_regs;

	ret = pca953x_read_regs(chip, chip->regs->output, chip->reg_output);
	if (ret)
		goto out;

	ret = pca953x_read_regs(chip, chip->regs->direction,
				chip->reg_direction);
	if (ret)
		goto out;

	/* set platform specific polarity inversion */
	if (invert)
		memset(val, 0xFF, NBANK(chip));
	else
		memset(val, 0, NBANK(chip));

	ret = pca953x_write_regs(chip, PCA953X_INVERT, val);
out:
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
haojian zhuang haojian zhuang 67 54.03% 1 25.00%
gregory clement gregory clement 39 31.45% 1 25.00%
bartosz golaszewski bartosz golaszewski 17 13.71% 1 25.00%
chandrabhanu mahapatra chandrabhanu mahapatra 1 0.81% 1 25.00%
Total 124 100.00% 4 100.00%



static int device_pca957x_init(struct pca953x_chip *chip, u32 invert)
{
	int ret;
	u8 val[MAX_BANK];

	chip->regs = &pca957x_regs;

	ret = pca953x_read_regs(chip, chip->regs->output, chip->reg_output);
	if (ret)
		goto out;
	ret = pca953x_read_regs(chip, chip->regs->direction,
				chip->reg_direction);
	if (ret)
		goto out;

	/* set platform specific polarity inversion */
	if (invert)
		memset(val, 0xFF, NBANK(chip));
	else
		memset(val, 0, NBANK(chip));
	ret = pca953x_write_regs(chip, PCA957X_INVRT, val);
	if (ret)
		goto out;

	/* To enable register 6, 7 to control pull up and pull down */
	memset(val, 0x02, NBANK(chip));
	ret = pca953x_write_regs(chip, PCA957X_BKEN, val);
	if (ret)
		goto out;

	return 0;
out:
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
haojian zhuang haojian zhuang 77 46.67% 1 16.67%
gregory clement gregory clement 51 30.91% 1 16.67%
nicholas krause nicholas krause 18 10.91% 1 16.67%
bartosz golaszewski bartosz golaszewski 17 10.30% 1 16.67%
colin cronin colin cronin 1 0.61% 1 16.67%
chandrabhanu mahapatra chandrabhanu mahapatra 1 0.61% 1 16.67%
Total 165 100.00% 6 100.00%


static const struct of_device_id pca953x_dt_ids[];



static int pca953x_probe(struct i2c_client *client,
				   const struct i2c_device_id *i2c_id)
{
	struct pca953x_platform_data *pdata;
	struct pca953x_chip *chip;
	int irq_base = 0;
	int ret;
	u32 invert = 0;
	struct regulator *reg;

	chip = devm_kzalloc(&client->dev,
			sizeof(struct pca953x_chip), GFP_KERNEL);
	if (chip == NULL)
		return -ENOMEM;

	pdata = dev_get_platdata(&client->dev);
	if (pdata) {
		irq_base = pdata->irq_base;
		chip->gpio_start = pdata->gpio_base;
		invert = pdata->invert;
		chip->names = pdata->names;
	} else {
		chip->gpio_start = -1;
		irq_base = 0;
	}

	chip->client = client;

	reg = devm_regulator_get(&client->dev, "vcc");
	if (IS_ERR(reg)) {
		ret = PTR_ERR(reg);
		if (ret != -EPROBE_DEFER)
			dev_err(&client->dev, "reg get err: %d\n", ret);
		return ret;
	}
	ret = regulator_enable(reg);
	if (ret) {
		dev_err(&client->dev, "reg en err: %d\n", ret);
		return ret;
	}
	chip->regulator = reg;

	if (i2c_id) {
		chip->driver_data = i2c_id->driver_data;
	} else {
		const struct acpi_device_id *acpi_id;
		const struct of_device_id *match;

		match = of_match_device(pca953x_dt_ids, &client->dev);
		if (match) {
			chip->driver_data = (int)(uintptr_t)match->data;
		} else {
			acpi_id = acpi_match_device(pca953x_acpi_ids, &client->dev);
			if (!acpi_id) {
				ret = -ENODEV;
				goto err_exit;
			}

			chip->driver_data = acpi_id->driver_data;
		}
	}

	mutex_init(&chip->i2c_lock);
	/*
         * In case we have an i2c-mux controlled by a GPIO provided by an
         * expander using the same driver higher on the device tree, read the
         * i2c adapter nesting depth and use the retrieved value as lockdep
         * subclass for chip->i2c_lock.
         *
         * REVISIT: This solution is not complete. It protects us from lockdep
         * false positives when the expander controlling the i2c-mux is on
         * a different level on the device tree, but not when it's on the same
         * level on a different branch (in which case the subclass number
         * would be the same).
         *
         * TODO: Once a correct solution is developed, a similar fix should be
         * applied to all other i2c-controlled GPIO expanders (and potentially
         * regmap-i2c).
         */
	lockdep_set_subclass(&chip->i2c_lock,
			     i2c_adapter_depth(client->adapter));

	/* initialize cached registers from their original values.
         * we can't share this chip with another i2c master.
         */
	pca953x_setup_gpio(chip, chip->driver_data & PCA_GPIO_MASK);

	if (chip->gpio_chip.ngpio <= 8) {
		chip->write_regs = pca953x_write_regs_8;
		chip->read_regs = pca953x_read_regs_8;
	} else if (chip->gpio_chip.ngpio >= 24) {
		chip->write_regs = pca953x_write_regs_24;
		chip->read_regs = pca953x_read_regs_24;
	} else {
		if (PCA_CHIP_TYPE(chip->driver_data) == PCA953X_TYPE)
			chip->write_regs = pca953x_write_regs_16;
		else
			chip->write_regs = pca957x_write_regs_16;
		chip->read_regs = pca953x_read_regs_16;
	}

	if (PCA_CHIP_TYPE(chip->driver_data) == PCA953X_TYPE)
		ret = device_pca953x_init(chip, invert);
	else
		ret = device_pca957x_init(chip, invert);
	if (ret)
		goto err_exit;

	ret = devm_gpiochip_add_data(&client->dev, &chip->gpio_chip, chip);
	if (ret)
		goto err_exit;

	ret = pca953x_irq_setup(chip, irq_base);
	if (ret)
		goto err_exit;

	if (pdata && pdata->setup) {
		ret = pdata->setup(client, chip->gpio_chip.base,
				chip->gpio_chip.ngpio, pdata->context);
		if (ret < 0)
			dev_warn(&client->dev, "setup failed, %d\n", ret);
	}

	i2c_set_clientdata(client, chip);
	return 0;

err_exit:
	regulator_disable(chip->regulator);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
phil reid phil reid 118 20.00% 1 3.57%
eric miao eric miao 118 20.00% 1 3.57%
bartosz golaszewski bartosz golaszewski 102 17.29% 5 17.86%
nate case nate case 51 8.64% 1 3.57%
ben dooks ben dooks 41 6.95% 1 3.57%
andy shevchenko andy shevchenko 40 6.78% 2 7.14%
david jander david jander 34 5.76% 2 7.14%
wolfram sang wolfram sang 16 2.71% 3 10.71%
linus walleij linus walleij 14 2.37% 3 10.71%
marc zyngier marc zyngier 11 1.86% 1 3.57%
haojian zhuang haojian zhuang 11 1.86% 1 3.57%
roland stigge roland stigge 8 1.36% 1 3.57%
guennadi liakhovetski guennadi liakhovetski 7 1.19% 2 7.14%
laxman dewangan laxman dewangan 6 1.02% 1 3.57%
chandrabhanu mahapatra chandrabhanu mahapatra 5 0.85% 1 3.57%
jingoo han jingoo han 4 0.68% 1 3.57%
markus pargmann markus pargmann 4 0.68% 1 3.57%
Total 590 100.00% 28 100.00%



static int pca953x_remove(struct i2c_client *client)
{
	struct pca953x_platform_data *pdata = dev_get_platdata(&client->dev);
	struct pca953x_chip *chip = i2c_get_clientdata(client);
	int ret;

	if (pdata && pdata->teardown) {
		ret = pdata->teardown(client, chip->gpio_chip.base,
				chip->gpio_chip.ngpio, pdata->context);
		if (ret < 0)
			dev_err(&client->dev, "%s failed, %d\n",
					"teardown", ret);
	} else {
		ret = 0;
	}

	regulator_disable(chip->regulator);

	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
eric miao eric miao 85 77.98% 1 16.67%
phil reid phil reid 8 7.34% 1 16.67%
arnd bergmann arnd bergmann 7 6.42% 1 16.67%
jingoo han jingoo han 4 3.67% 1 16.67%
guennadi liakhovetski guennadi liakhovetski 3 2.75% 1 16.67%
david jander david jander 2 1.83% 1 16.67%
Total 109 100.00% 6 100.00%

/* convenience to stop overlong match-table lines */

#define OF_953X(__nrgpio, __int) (void *)(__nrgpio | PCA953X_TYPE | __int)

#define OF_957X(__nrgpio, __int) (void *)(__nrgpio | PCA957X_TYPE | __int)


static const struct of_device_id pca953x_dt_ids[] = {
	{ .compatible = "nxp,pca9505", .data = OF_953X(40, PCA_INT), },
	{ .compatible = "nxp,pca9534", .data = OF_953X( 8, PCA_INT), },
	{ .compatible = "nxp,pca9535", .data = OF_953X(16, PCA_INT), },
	{ .compatible = "nxp,pca9536", .data = OF_953X( 4, 0), },
	{ .compatible = "nxp,pca9537", .data = OF_953X( 4, PCA_INT), },
	{ .compatible = "nxp,pca9538", .data = OF_953X( 8, PCA_INT), },
	{ .compatible = "nxp,pca9539", .data = OF_953X(16, PCA_INT), },
	{ .compatible = "nxp,pca9554", .data = OF_953X( 8, PCA_INT), },
	{ .compatible = "nxp,pca9555", .data = OF_953X(16, PCA_INT), },
	{ .compatible = "nxp,pca9556", .data = OF_953X( 8, 0), },
	{ .compatible = "nxp,pca9557", .data = OF_953X( 8, 0), },
	{ .compatible = "nxp,pca9574", .data = OF_957X( 8, PCA_INT), },
	{ .compatible = "nxp,pca9575", .data = OF_957X(16, PCA_INT), },
	{ .compatible = "nxp,pca9698", .data = OF_953X(40, 0), },

	{ .compatible = "maxim,max7310", .data = OF_953X( 8, 0), },
	{ .compatible = "maxim,max7312", .data = OF_953X(16, PCA_INT), },
	{ .compatible = "maxim,max7313", .data = OF_953X(16, PCA_INT), },
	{ .compatible = "maxim,max7315", .data = OF_953X( 8, PCA_INT), },
	{ .compatible = "maxim,max7318", .data = OF_953X(16, PCA_INT), },

	{ .compatible = "ti,pca6107", .data = OF_953X( 8, PCA_INT), },
	{ .compatible = "ti,pca9536", .data = OF_953X( 4, 0), },
	{ .compatible = "ti,tca6408", .data = OF_953X( 8, PCA_INT), },
	{ .compatible = "ti,tca6416", .data = OF_953X(16, PCA_INT), },
	{ .compatible = "ti,tca6424", .data = OF_953X(24, PCA_INT), },

	{ .compatible = "onsemi,pca9654", .data = OF_953X( 8, PCA_INT), },

	{ .compatible = "exar,xra1202", .data = OF_953X( 8, 0), },
	{ }
};

MODULE_DEVICE_TABLE(of, pca953x_dt_ids);


static struct i2c_driver pca953x_driver = {
	.driver = {
		.name	= "pca953x",
		.of_match_table = pca953x_dt_ids,
		.acpi_match_table = ACPI_PTR(pca953x_acpi_ids),
        },
	.probe		= pca953x_probe,
	.remove		= pca953x_remove,
	.id_table	= pca953x_id,
};



static int __init pca953x_init(void)
{
	return i2c_add_driver(&pca953x_driver);
}
Contributors
Person Tokens Prop Commits CommitProp
eric miao eric miao 14 87.50% 1 50.00%
guennadi liakhovetski guennadi liakhovetski 2 12.50% 1 50.00%
Total 16 100.00% 2 100.00%

/* register after i2c postcore initcall and before
 * subsys initcalls that may rely on these GPIOs
 */

subsys_initcall(pca953x_init);



static void __exit pca953x_exit(void)
{
	i2c_del_driver(&pca953x_driver);
}
Contributors
Person Tokens Prop Commits CommitProp
eric miao eric miao 13 86.67% 1 50.00%
guennadi liakhovetski guennadi liakhovetski 2 13.33% 1 50.00%
Total 15 100.00% 2 100.00%


module_exit(pca953x_exit);

MODULE_AUTHOR("eric miao <eric.miao@marvell.com>");
MODULE_DESCRIPTION("GPIO expander driver for PCA953x");
MODULE_LICENSE("GPL");
Overall Contributors
Person Tokens Prop Commits CommitProp
gregory clement gregory clement 764 14.99% 3 3.45%
eric miao eric miao 748 14.68% 1 1.15%
marc zyngier marc zyngier 624 12.24% 2 2.30%
bartosz golaszewski bartosz golaszewski 536 10.52% 7 8.05%
phil reid phil reid 336 6.59% 4 4.60%
ben dooks ben dooks 317 6.22% 3 3.45%
haojian zhuang haojian zhuang 308 6.04% 1 1.15%
yong li yong li 215 4.22% 2 2.30%
maxime ripard maxime ripard 173 3.39% 2 2.30%
guennadi liakhovetski guennadi liakhovetski 145 2.84% 3 3.45%
linus walleij linus walleij 144 2.83% 6 6.90%
andy shevchenko andy shevchenko 127 2.49% 4 4.60%
roland stigge roland stigge 98 1.92% 1 1.15%
nate case nate case 75 1.47% 2 2.30%
david jander david jander 50 0.98% 5 5.75%
andreas schallenberg andreas schallenberg 47 0.92% 2 2.30%
david brownell david brownell 44 0.86% 5 5.75%
lennert buytenhek lennert buytenhek 41 0.80% 1 1.15%
aaron sierra aaron sierra 31 0.61% 3 3.45%
marek vasut marek vasut 27 0.53% 1 1.15%
joshua scott joshua scott 25 0.49% 1 1.15%
geert uytterhoeven geert uytterhoeven 20 0.39% 1 1.15%
toby smith toby smith 19 0.37% 2 2.30%
nicholas krause nicholas krause 18 0.35% 1 1.15%
vignesh r vignesh r 18 0.35% 2 2.30%
wolfram sang wolfram sang 16 0.31% 3 3.45%
jean delvare jean delvare 15 0.29% 1 1.15%
grygorii strashko grygorii strashko 14 0.27% 1 1.15%
daniel silverstone daniel silverstone 13 0.26% 1 1.15%
alek du alek du 12 0.24% 2 2.30%
will newton will newton 12 0.24% 1 1.15%
thierry reding thierry reding 10 0.20% 1 1.15%
markus pargmann markus pargmann 8 0.16% 1 1.15%
jingoo han jingoo han 8 0.16% 1 1.15%
chandrabhanu mahapatra chandrabhanu mahapatra 7 0.14% 1 1.15%
arnd bergmann arnd bergmann 7 0.14% 1 1.15%
laxman dewangan laxman dewangan 6 0.12% 1 1.15%
arnaud patard arnaud patard 5 0.10% 1 1.15%
andrew ruder andrew ruder 4 0.08% 1 1.15%
h hartley sweeten h hartley sweeten 3 0.06% 1 1.15%
tejun heo tejun heo 3 0.06% 1 1.15%
uwe kleine-koenig uwe kleine-koenig 2 0.04% 1 1.15%
vivien didelot vivien didelot 1 0.02% 1 1.15%
colin cronin colin cronin 1 0.02% 1 1.15%
Total 5097 100.00% 87 100.00%
Directory: drivers/gpio

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
	Person	Tokens	Prop	Commits	CommitProp
gregory clement	gregory clement	97	100.00%	1	100.00%
	Total	97	100.00%	1	100.00%
cregit-Linux how code gets into the kernel

Release 4.10 drivers/gpio/gpio-pca953x.c

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