static int serial_omap_runtime_suspend(struct device *dev)
{
struct uart_omap_port *up = dev_get_drvdata(dev);
if (!up)
return -EINVAL;
/*
* When using 'no_console_suspend', the console UART must not be
* suspended. Since driver suspend is managed by runtime suspend,
* preventing runtime suspend (by returning error) will keep device
* active during suspend.
*/
if (up->is_suspending && !console_suspend_enabled &&
uart_console(&up->port))
return -EBUSY;
up->context_loss_cnt = serial_omap_get_context_loss_count(up);
serial_omap_enable_wakeup(up, true);
up->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
schedule_work(&up->qos_work);
return 0;
}
static int serial_omap_runtime_suspend(struct device *dev)
{
struct uart_omap_port *up = dev_get_drvdata(dev);
struct omap_uart_port_info *pdata = dev->platform_data;
if (!up)
return -EINVAL;
if (!pdata)
return 0;
up->context_loss_cnt = serial_omap_get_context_loss_count(up);
if (device_may_wakeup(dev)) {
if (!up->wakeups_enabled) {
serial_omap_enable_wakeup(up, true);
up->wakeups_enabled = true;
}
} else {
if (up->wakeups_enabled) {
serial_omap_enable_wakeup(up, false);
up->wakeups_enabled = false;
}
}
up->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
schedule_work(&up->qos_work);
return 0;
}
static int serial_omap_runtime_resume(struct device *dev)
{
struct uart_omap_port *up = dev_get_drvdata(dev);
u32 loss_cnt = serial_omap_get_context_loss_count(up);
if (up->context_loss_cnt != loss_cnt)
serial_omap_restore_context(up);
up->latency = up->calc_latency;
schedule_work(&up->qos_work);
return 0;
}
static int serial_omap_runtime_resume(struct device *dev)
{
struct uart_omap_port *up = dev_get_drvdata(dev);
int loss_cnt = serial_omap_get_context_loss_count(up);
if (loss_cnt < 0) {
dev_err(dev, "serial_omap_get_context_loss_count failed : %d\n",
loss_cnt);
serial_omap_restore_context(up);
} else if (up->context_loss_cnt != loss_cnt) {
serial_omap_restore_context(up);
}
up->latency = up->calc_latency;
schedule_work(&up->qos_work);
return 0;
}
