int mdp_stop_histogram(struct fb_info *info)
{
unsigned long flag;
int ret = 0;
struct msm_fb_data_type *mfd = (struct msm_fb_data_type *)info->par;
mutex_lock(&mdp_hist_mutex);
if (!mdp_is_hist_start) {
printk(KERN_ERR "%s histogram already stopped\n", __func__);
ret = -EPERM;
goto mdp_hist_stop_err;
}
spin_lock_irqsave(&mdp_spin_lock, flag);
mdp_is_hist_start = FALSE;
spin_unlock_irqrestore(&mdp_spin_lock, flag);
if (!mfd->panel_power_on) {
mdp_is_hist_data = FALSE;
complete(&mdp_hist_comp);
ret = -EINVAL;
goto mdp_hist_stop_err;
}
ret = _mdp_histogram_ctrl(FALSE);
mutex_unlock(&mdp_hist_mutex);
flush_workqueue(mdp_hist_wq);
return ret;
mdp_hist_stop_err:
mutex_unlock(&mdp_hist_mutex);
return ret;
}
int mdp_histogram_ctrl(boolean en)
{
int ret = 0;
mutex_lock(&mdp_hist_mutex);
ret = _mdp_histogram_ctrl(en);
mutex_unlock(&mdp_hist_mutex);
return ret;
}
int mdp_histogram_ctrl(boolean en)
{
int ret = 0;
mutex_lock(&mdp_hist_mutex);
if (mdp_is_hist_start)
ret = _mdp_histogram_ctrl(en);
mutex_unlock(&mdp_hist_mutex);
if (en == false)
flush_workqueue(mdp_hist_wq);
return ret;
}
int mdp_stop_histogram(struct fb_info *info)
{
unsigned long flag;
int ret = 0;
mutex_lock(&mdp_hist_mutex);
if (!mdp_is_hist_start) {
printk(KERN_ERR "%s histogram already stopped\n", __func__);
ret = -EPERM;
goto mdp_hist_stop_err;
}
spin_lock_irqsave(&mdp_spin_lock, flag);
mdp_is_hist_start = FALSE;
spin_unlock_irqrestore(&mdp_spin_lock, flag);
ret = _mdp_histogram_ctrl(FALSE);
mdp_hist_stop_err:
mutex_unlock(&mdp_hist_mutex);
return ret;
}
