static int ktd259_probe(struct platform_device *pdev)
{
struct backlight_properties props;
struct backlight_device *ktd259_backlight_device;
struct ktd259 *pKtd259Data;
struct ktd259x_bl_platform_data *pd;
int ret = 0;
dev_dbg(&pdev->dev, "%s function enter\n", __func__);
pKtd259Data = kmalloc(sizeof(struct ktd259), GFP_KERNEL);
memset(pKtd259Data, 0, sizeof(struct ktd259));
pKtd259Data->currentRatio = DEFAULT_RATIO;
pKtd259Data->brightness = DEFAULT_BRINGHESS;
pKtd259Data->pd = pdev->dev.platform_data;
memset(&props, 0, sizeof(struct backlight_properties));
props.max_brightness = pKtd259Data->pd->max_brightness;
props.type = BACKLIGHT_RAW;
ktd259_backlight_device = backlight_device_register( "panel",
&pdev->dev,
pKtd259Data,
&ktd259_ops,
&props);
if (IS_ERR(ktd259_backlight_device)) {
dev_info(&pdev->dev, "backlight_device_register() failed\n");
ret = PTR_ERR(ktd259_backlight_device);
} else {
ktd259_backlight_device->props.power = FB_BLANK_UNBLANK;
ktd259_backlight_device->props.brightness = DEFAULT_BRINGHESS;
ktd259_set_brightness(ktd259_backlight_device);
}
#ifdef CONFIG_HAS_EARLYSUSPEND
pKtd259Data->earlysuspend.level = EARLY_SUSPEND_LEVEL_DISABLE_FB - 1;
pKtd259Data->earlysuspend.suspend = ktd259_early_suspend;
pKtd259Data->earlysuspend.resume = ktd259_late_resume;
register_early_suspend(&pKtd259Data->earlysuspend);
pKtd259Data->backlight_disabled = false;
#endif
pd = pKtd259Data->pd;
pd->bd = ktd259_backlight_device;
/* If external control of the backlight has been requested, then provide interface function
in backlight platform data */
if (pd->external_bl_control)
pd->bl_on_off = ktd259_backlight_on_off;
dev_dbg(&pdev->dev, "%s function exit\n", __func__);
return ret;
}
/* Control function to switch the backlight on/off. May be called by suspend/resume or externally */
static void ktd259_backlight_on_off(struct backlight_device *bd, bool on)
{
struct ktd259 *pKtd259Data = bl_get_data(bd);
dev_dbg(&bd->dev, "%s function enter\n", __func__);
if (on){
pKtd259Data->backlight_disabled = false;
bd->props.brightness = pKtd259Data->brightness;
ktd259_set_brightness(bd);
} else {
pKtd259Data->backlight_disabled = true;
gpio_set_value(pKtd259Data->pd->ctrl_gpio, pKtd259Data->pd->ctrl_low);
pKtd259Data->currentRatio = KTD259_BACKLIGHT_OFF;
}
}
static int ktd259_probe(struct platform_device *pdev)
{
struct backlight_properties props;
struct backlight_device *ktd259_backlight_device;
struct ktd259 *pKtd259Data;
int ret = 0;
dev_dbg(&pdev->dev, "%s fuction enter\n", __func__);
pKtd259Data = kmalloc(sizeof(struct ktd259), GFP_KERNEL);
memset(pKtd259Data, 0, sizeof(struct ktd259));
pKtd259Data->currentRatio = KTD259_BACKLIGHT_OFF;
pKtd259Data->brightness = KTD259_BACKLIGHT_OFF;
pKtd259Data->pd = pdev->dev.platform_data;
memset(&props, 0, sizeof(struct backlight_properties));
props.max_brightness = pKtd259Data->pd->max_brightness;
props.type = BACKLIGHT_RAW;
ktd259_backlight_device = backlight_device_register( "panel",
&pdev->dev,
pKtd259Data,
&ktd259_ops,
&props);
if (IS_ERR(ktd259_backlight_device)) {
dev_info(&pdev->dev, "backlight_device_register() failed\n");
ret = PTR_ERR(ktd259_backlight_device);
} else {
ktd259_backlight_device->props.power = FB_BLANK_UNBLANK;
ktd259_backlight_device->props.brightness = ktd259_backlight_device->props.max_brightness;
ktd259_set_brightness(ktd259_backlight_device);
}
#ifdef CONFIG_HAS_EARLYSUSPEND
pKtd259Data->earlysuspend.level = EARLY_SUSPEND_LEVEL_DISABLE_FB - 1;
pKtd259Data->earlysuspend.suspend = ktd259_early_suspend;
pKtd259Data->earlysuspend.resume = ktd259_late_resume;
register_early_suspend(&pKtd259Data->earlysuspend);
#endif
dev_dbg(&pdev->dev, "%s fuction exit\n", __func__);
return ret;
}
