static ssize_t ltn101al03_sysfs_store_lcd_power(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t len)
{
struct omap_dss_device *dssdev = to_dss_device(dev_get_drvdata(dev));
struct ltn101al03 *lcd = dev_get_drvdata(&dssdev->dev);
int ret;
int rc;
int lcd_enable;
rc = kstrtoint(buf, 0, &lcd_enable);
if (rc < 0)
return rc;
mutex_lock(&lcd->lock);
if (lcd_enable) {
if (dssdev->state != OMAP_DSS_DISPLAY_SUSPENDED) {
ret = -EINVAL;
goto out;
}
ret = ltn101al03_start(dssdev);
dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
} else {
if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE) {
ret = -EINVAL;
goto out;
}
ltn101al03_stop(dssdev);
dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED;
}
out:
mutex_unlock(&lcd->lock);
return len;
}
static int ltn101al03_panel_resume(struct omap_dss_device *dssdev)
{
struct ltn101al03 *lcd = dev_get_drvdata(&dssdev->dev);
int ret;
mutex_lock(&lcd->lock);
if (dssdev->state != OMAP_DSS_DISPLAY_SUSPENDED) {
ret = -EINVAL;
goto out;
}
ret = ltn101al03_start(dssdev);
out:
mutex_unlock(&lcd->lock);
return ret;
}
static int ltn101al03_panel_enable(struct omap_dss_device *dssdev)
{
struct ltn101al03 *lcd = dev_get_drvdata(&dssdev->dev);
int ret;
dev_dbg(&dssdev->dev, "enable\n");
mutex_lock(&lcd->lock);
if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED) {
ret = -EINVAL;
goto out;
}
ret = ltn101al03_start(dssdev);
out:
mutex_unlock(&lcd->lock);
return ret;
}