/* locking: called with info->lock held */
static int sh_mobile_lcdc_notify(struct notifier_block *nb,
unsigned long action, void *data)
{
struct fb_event *event = data;
struct fb_info *info = event->info;
struct sh_mobile_lcdc_chan *ch = info->par;
struct sh_mobile_lcdc_board_cfg *board_cfg = &ch->cfg.board_cfg;
int ret;
if (&ch->lcdc->notifier != nb)
return NOTIFY_DONE;
dev_dbg(info->dev, "%s(): action = %lu, data = %p\n",
__func__, action, event->data);
switch(action) {
case FB_EVENT_SUSPEND:
if (try_module_get(board_cfg->owner) && board_cfg->display_off) {
board_cfg->display_off(board_cfg->board_data);
module_put(board_cfg->owner);
}
pm_runtime_put(info->device);
sh_mobile_lcdc_stop(ch->lcdc);
break;
case FB_EVENT_RESUME:
mutex_lock(&ch->open_lock);
sh_mobile_fb_reconfig(info);
mutex_unlock(&ch->open_lock);
/* HDMI must be enabled before LCDC configuration */
if (try_module_get(board_cfg->owner) && board_cfg->display_on) {
board_cfg->display_on(board_cfg->board_data, info);
module_put(board_cfg->owner);
}
ret = sh_mobile_lcdc_start(ch->lcdc);
if (!ret)
pm_runtime_get_sync(info->device);
}
return NOTIFY_OK;
}
/*
* Locking: both .fb_release() and .fb_open() are called with info->lock held if
* user == 1, or with console sem held, if user == 0.
*/
static int sh_mobile_release(struct fb_info *info, int user)
{
struct sh_mobile_lcdc_chan *ch = info->par;
mutex_lock(&ch->open_lock);
dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count);
ch->use_count--;
/* Nothing to reconfigure, when called from fbcon */
if (user) {
console_lock();
sh_mobile_fb_reconfig(info);
console_unlock();
}
mutex_unlock(&ch->open_lock);
return 0;
}
