static int chipsfb_pci_resume(struct pci_dev *pdev)
{
struct fb_info *p = pci_get_drvdata(pdev);
console_lock();
fb_set_suspend(p, 0);
chipsfb_blank(0, p);
console_unlock();
pdev->dev.power.power_state = PMSG_ON;
return 0;
}
/*
* Save the contents of the frame buffer when we go to sleep,
* and restore it when we wake up again.
*/
int
chips_sleep_notify(struct pmu_sleep_notifier *self, int when)
{
struct fb_info *p = &chipsfb_info;
int nb = p->var.yres * p->fix.line_length;
if (p->screen_base == NULL)
return PBOOK_SLEEP_OK;
switch (when) {
case PBOOK_SLEEP_REQUEST:
save_framebuffer = vmalloc(nb);
if (save_framebuffer == NULL)
return PBOOK_SLEEP_REFUSE;
break;
case PBOOK_SLEEP_REJECT:
if (save_framebuffer) {
vfree(save_framebuffer);
save_framebuffer = NULL;
}
break;
case PBOOK_SLEEP_NOW:
chipsfb_blank(1, p);
if (save_framebuffer)
memcpy(save_framebuffer, p->screen_base, nb);
break;
case PBOOK_WAKE:
if (save_framebuffer) {
memcpy(p->screen_base, save_framebuffer, nb);
vfree(save_framebuffer);
save_framebuffer = NULL;
}
chipsfb_blank(0, p);
break;
}
return PBOOK_SLEEP_OK;
}
static int chipsfb_pci_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct fb_info *p = pci_get_drvdata(pdev);
if (state.event == pdev->dev.power.power_state.event)
return 0;
if (!(state.event & PM_EVENT_SLEEP))
goto done;
console_lock();
chipsfb_blank(1, p);
fb_set_suspend(p, 1);
console_unlock();
done:
pdev->dev.power.power_state = state;
return 0;
}
static int chipsfb_pci_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct fb_info *p = pci_get_drvdata(pdev);
if (state.event == pdev->dev.power.power_state.event)
return 0;
if (state.event != PM_SUSPEND_MEM)
goto done;
acquire_console_sem();
chipsfb_blank(1, p);
fb_set_suspend(p, 1);
release_console_sem();
done:
pdev->dev.power.power_state = state;
return 0;
}