static int __devexit adp5520_bl_remove(struct platform_device *pdev)
{
struct backlight_device *bl = platform_get_drvdata(pdev);
struct adp5520_bl *data = bl_get_data(bl);
adp5520_clr_bits(data->master, MODE_STATUS, BL_EN);
if (data->pdata->en_ambl_sens)
sysfs_remove_group(&bl->dev.kobj,
&adp5520_bl_attr_group);
backlight_device_unregister(bl);
kfree(data);
return 0;
}
static int adp5520_gpio_direction_output(struct gpio_chip *chip,
unsigned off, int val)
{
struct adp5520_gpio *dev;
int ret = 0;
dev = gpiochip_get_data(chip);
set_bit(off, &dev->output);
if (val)
ret |= adp5520_set_bits(dev->master, ADP5520_GPIO_OUT,
dev->lut[off]);
else
ret |= adp5520_clr_bits(dev->master, ADP5520_GPIO_OUT,
dev->lut[off]);
ret |= adp5520_set_bits(dev->master, ADP5520_GPIO_CFG_2,
dev->lut[off]);
return ret;
}
static int adp5520_gpio_probe(struct platform_device *pdev)
{
struct adp5520_gpio_platform_data *pdata = dev_get_platdata(&pdev->dev);
struct adp5520_gpio *dev;
struct gpio_chip *gc;
int ret, i, gpios;
unsigned char ctl_mask = 0;
if (pdata == NULL) {
dev_err(&pdev->dev, "missing platform data\n");
return -ENODEV;
}
if (pdev->id != ID_ADP5520) {
dev_err(&pdev->dev, "only ADP5520 supports GPIO\n");
return -ENODEV;
}
dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
if (dev == NULL)
return -ENOMEM;
dev->master = pdev->dev.parent;
for (gpios = 0, i = 0; i < ADP5520_MAXGPIOS; i++)
if (pdata->gpio_en_mask & (1 << i))
dev->lut[gpios++] = 1 << i;
if (gpios < 1) {
ret = -EINVAL;
goto err;
}
gc = &dev->gpio_chip;
gc->direction_input = adp5520_gpio_direction_input;
gc->direction_output = adp5520_gpio_direction_output;
gc->get = adp5520_gpio_get_value;
gc->set = adp5520_gpio_set_value;
gc->can_sleep = true;
gc->base = pdata->gpio_start;
gc->ngpio = gpios;
gc->label = pdev->name;
gc->owner = THIS_MODULE;
ret = adp5520_clr_bits(dev->master, ADP5520_GPIO_CFG_1,
pdata->gpio_en_mask);
if (pdata->gpio_en_mask & ADP5520_GPIO_C3)
ctl_mask |= ADP5520_C3_MODE;
if (pdata->gpio_en_mask & ADP5520_GPIO_R3)
ctl_mask |= ADP5520_R3_MODE;
if (ctl_mask)
ret = adp5520_set_bits(dev->master, ADP5520_LED_CONTROL,
ctl_mask);
ret |= adp5520_set_bits(dev->master, ADP5520_GPIO_PULLUP,
pdata->gpio_pullup_mask);
if (ret) {
dev_err(&pdev->dev, "failed to write\n");
goto err;
}
ret = devm_gpiochip_add_data(&pdev->dev, &dev->gpio_chip, dev);
if (ret)
goto err;
platform_set_drvdata(pdev, dev);
return 0;
err:
return ret;
}