static int ktd259b_backlight_probe(struct platform_device *pdev)
{
struct platform_ktd259b_backlight_data *data = pdev->dev.platform_data;
struct backlight_device *bl;
struct ktd259b_bl_data *ktd259b;
struct backlight_properties props;
int ret;
BLDBG("[BACKLIGHT] ktd259b_backlight_probe\n");
if (!data) {
dev_err(&pdev->dev, "failed to find platform data\n");
return -EINVAL;
}
ktd259b = kzalloc(sizeof(*ktd259b), GFP_KERNEL);
if (!ktd259b) {
dev_err(&pdev->dev, "no memory for state\n");
ret = -ENOMEM;
goto err_alloc;
}
ktd259b->ctrl_pin = data->ctrl_pin;
memset(&props, 0, sizeof(struct backlight_properties));
props.max_brightness = data->max_brightness;
props.type = BACKLIGHT_PLATFORM;
bl = backlight_device_register(pdev->name, &pdev->dev,
ktd259b, &ktd259b_backlight_ops, &props);
if (IS_ERR(bl)) {
dev_err(&pdev->dev, "failed to register backlight\n");
ret = PTR_ERR(bl);
goto err_bl;
}
#ifdef CONFIG_HAS_EARLYSUSPEND
ktd259b->pdev = pdev;
ktd259b->early_suspend_desc.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN;
ktd259b->early_suspend_desc.suspend = ktd259b_backlight_earlysuspend;
ktd259b->early_suspend_desc.resume = ktd259b_backlight_earlyresume;
register_early_suspend(&ktd259b->early_suspend_desc);
#endif
bl->props.max_brightness = data->max_brightness;
bl->props.brightness = data->dft_brightness;
platform_set_drvdata(pdev, bl);
ktd259b_backlight_update_status(bl);
return 0;
err_bl:
kfree(ktd259b);
err_alloc:
return ret;
}
void backlight_update_CABC()
{
BLDBG("[BACKLIGHT] backlight_update_CABC\n");
ktd259b_backlight_update_status(&g_bl);
}
