static int __platform_pm_runtime_resume(struct platform_device *pdev)
{
struct device *d = &pdev->dev;
struct pdev_archdata *ad = &pdev->archdata;
int hwblk = ad->hwblk_id;
int ret = -ENOSYS;
dev_dbg(d, "__platform_pm_runtime_resume() [%d]\n", hwblk);
if (d->driver) {
hwblk_enable(hwblk_info, hwblk);
ret = 0;
if (test_bit(PDEV_ARCHDATA_FLAG_SUSP, &ad->flags)) {
if (d->driver->pm && d->driver->pm->runtime_resume)
ret = d->driver->pm->runtime_resume(d);
if (!ret)
clear_bit(PDEV_ARCHDATA_FLAG_SUSP, &ad->flags);
else
hwblk_disable(hwblk_info, hwblk);
}
}
dev_dbg(d, "__platform_pm_runtime_resume() [%d] - returns %d\n",
hwblk, ret);
return ret;
}
static int __platform_pm_runtime_suspend(struct platform_device *pdev)
{
struct device *d = &pdev->dev;
struct pdev_archdata *ad = &pdev->archdata;
int hwblk = ad->hwblk_id;
int ret = -ENOSYS;
dev_dbg(d, "__platform_pm_runtime_suspend() [%d]\n", hwblk);
if (d->driver) {
BUG_ON(!test_bit(PDEV_ARCHDATA_FLAG_IDLE, &ad->flags));
ret = 0;
if (d->driver->pm && d->driver->pm->runtime_suspend) {
hwblk_enable(hwblk_info, hwblk);
ret = d->driver->pm->runtime_suspend(d);
hwblk_disable(hwblk_info, hwblk);
}
if (!ret) {
set_bit(PDEV_ARCHDATA_FLAG_SUSP, &ad->flags);
platform_pm_runtime_not_idle(pdev);
hwblk_cnt_dec(hwblk_info, hwblk, HWBLK_CNT_IDLE);
}
}
dev_dbg(d, "__platform_pm_runtime_suspend() [%d] - returns %d\n",
hwblk, ret);
return ret;
}
/* allow clocks to enable and disable hardware blocks */
static int sh_hwblk_clk_enable(struct clk *clk)
{
if (!hwblk_info)
return -ENOENT;
hwblk_enable(hwblk_info, clk->arch_flags);
return 0;
}
static int platform_bus_notify(struct notifier_block *nb,
unsigned long action, void *data)
{
struct device *dev = data;
struct platform_device *pdev = to_platform_device(dev);
int hwblk = pdev->archdata.hwblk_id;
/* ignore off-chip platform devices */
if (!hwblk)
return 0;
switch (action) {
case BUS_NOTIFY_ADD_DEVICE:
INIT_LIST_HEAD(&pdev->archdata.entry);
mutex_init(&pdev->archdata.mutex);
/* platform devices without drivers should be disabled */
hwblk_enable(hwblk_info, hwblk);
hwblk_disable(hwblk_info, hwblk);
/* make sure driver re-inits itself once */
__set_bit(PDEV_ARCHDATA_FLAG_INIT, &pdev->archdata.flags);
break;
/* TODO: add BUS_NOTIFY_BIND_DRIVER and increase idle count */
case BUS_NOTIFY_BOUND_DRIVER:
/* keep track of number of devices in use per hwblk */
hwblk_cnt_inc(hwblk_info, hwblk, HWBLK_CNT_DEVICES);
break;
case BUS_NOTIFY_UNBOUND_DRIVER:
/* keep track of number of devices in use per hwblk */
hwblk_cnt_dec(hwblk_info, hwblk, HWBLK_CNT_DEVICES);
/* make sure driver re-inits itself once */
__set_bit(PDEV_ARCHDATA_FLAG_INIT, &pdev->archdata.flags);
break;
case BUS_NOTIFY_DEL_DEVICE:
break;
}
return 0;
}
