Exemple #1
0
static int adp5520_keys_notifier(struct notifier_block *nb,
				 unsigned long event, void *data)
{
	struct adp5520_keys *dev;
	uint8_t reg_val_lo, reg_val_hi;
	unsigned short keymask;

	dev = container_of(nb, struct adp5520_keys, notifier);

	if (event & ADP5520_KP_INT) {
		adp5520_read(dev->master, ADP5520_KP_INT_STAT_1, &reg_val_lo);
		adp5520_read(dev->master, ADP5520_KP_INT_STAT_2, &reg_val_hi);

		keymask = (reg_val_hi << 8) | reg_val_lo;
		/* Read twice to clear */
		adp5520_read(dev->master, ADP5520_KP_INT_STAT_1, &reg_val_lo);
		adp5520_read(dev->master, ADP5520_KP_INT_STAT_2, &reg_val_hi);
		keymask |= (reg_val_hi << 8) | reg_val_lo;
		adp5520_keys_report_event(dev, keymask, 1);
	}

	if (event & ADP5520_KR_INT) {
		adp5520_read(dev->master, ADP5520_KR_INT_STAT_1, &reg_val_lo);
		adp5520_read(dev->master, ADP5520_KR_INT_STAT_2, &reg_val_hi);

		keymask = (reg_val_hi << 8) | reg_val_lo;
		/* Read twice to clear */
		adp5520_read(dev->master, ADP5520_KR_INT_STAT_1, &reg_val_lo);
		adp5520_read(dev->master, ADP5520_KR_INT_STAT_2, &reg_val_hi);
		keymask |= (reg_val_hi << 8) | reg_val_lo;
		adp5520_keys_report_event(dev, keymask, 0);
	}

	return 0;
}
Exemple #2
0
static int adp5520_bl_get_brightness(struct backlight_device *bl)
{
	struct adp5520_bl *data = bl_get_data(bl);
	int error;
	uint8_t reg_val;

	error = adp5520_read(data->master, ADP5520_BL_VALUE, &reg_val);

	return error ? data->current_brightness : reg_val;
}
Exemple #3
0
static int adp5520_gpio_get_value(struct gpio_chip *chip, unsigned off)
{
	struct adp5520_gpio *dev;
	uint8_t reg_val;

	dev = gpiochip_get_data(chip);

	/*
	 * There are dedicated registers for GPIO IN/OUT.
	 * Make sure we return the right value, even when configured as output
	 */

	if (test_bit(off, &dev->output))
		adp5520_read(dev->master, ADP5520_GPIO_OUT, &reg_val);
	else
		adp5520_read(dev->master, ADP5520_GPIO_IN, &reg_val);

	return !!(reg_val & dev->lut[off]);
}
Exemple #4
0
static int adp5520_suspend(struct device *dev)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct adp5520_chip *chip = dev_get_drvdata(&client->dev);

	adp5520_read(chip->dev, ADP5520_MODE_STATUS, &chip->mode);
	/* All other bits are W1C */
	chip->mode &= ADP5520_BL_EN | ADP5520_DIM_EN | ADP5520_nSTNBY;
	adp5520_write(chip->dev, ADP5520_MODE_STATUS, 0);
	return 0;
}
Exemple #5
0
static ssize_t adp5520_show(struct device *dev, char *buf, int reg)
{
	struct adp5520_bl *data = dev_get_drvdata(dev);
	int error;
	uint8_t reg_val;

	mutex_lock(&data->lock);
	error = adp5520_read(data->master, reg, &reg_val);
	mutex_unlock(&data->lock);

	return sprintf(buf, "%u\n", reg_val);
}