static void bbswitch_off(void) {
if (is_card_disabled())
return;
// to prevent the system from possibly locking up, don't disable the device
// if it's still in use by a driver (i.e. nouveau or nvidia)
if (dis_dev->driver) {
pr_warn("device %s is in use by driver '%s', refusing OFF\n",
dev_name(&dis_dev->dev), dis_dev->driver->name);
return;
}
pr_info("disabling discrete graphics\n");
if (bbswitch_optimus_dsm()) {
pr_warn("Optimus ACPI call failed, the device is not disabled\n");
return;
}
pci_save_state(dis_dev);
pci_clear_master(dis_dev);
pci_disable_device(dis_dev);
pci_set_power_state(dis_dev, PCI_D3cold);
if (bbswitch_acpi_off())
pr_warn("The discrete card could not be disabled by a _DSM call\n");
}
static void bbswitch_off(void) {
if (is_card_disabled())
return;
// to prevent the system from possibly locking up, don't disable the device
// if it's still in use by a driver (i.e. nouveau or nvidia)
if (dis_dev->driver) {
printk(KERN_WARNING "bbswitch: device %s is in use by driver '%s', "
"refusing OFF\n", dev_name(&dis_dev->dev), dis_dev->driver->name);
return;
}
printk(KERN_INFO "bbswitch: disabling discrete graphics\n");
if (dsm_type == DSM_TYPE_OPTIMUS && bbswitch_optimus_dsm()) {
printk(KERN_WARNING "bbswitch: ACPI call failed, the device is not"
" disabled\n");
return;
}
pci_save_state(dis_dev);
pci_clear_master(dis_dev);
pci_disable_device(dis_dev);
pci_set_power_state(dis_dev, PCI_D3hot);
if (bbswitch_acpi_off())
printk(KERN_WARNING "bbswitch: The discrete card could not be disabled"
" by a _DSM call\n");
}
static void bbswitch_off(void) {
if (is_card_disabled())
return;
// to prevent the system from possibly locking up, don't disable the device
// if it's still in use by a driver (i.e. nouveau or nvidia)
if (dis_dev->driver) {
pr_warn("device %s is in use by driver '%s', refusing OFF\n",
dev_name(&dis_dev->dev), dis_dev->driver->name);
return;
}
pr_info("disabling discrete graphics\n");
if (bbswitch_optimus_dsm()) {
pr_warn("Optimus ACPI call failed, the device is not disabled\n");
return;
}
pci_save_state(dis_dev);
pci_clear_master(dis_dev);
pci_disable_device(dis_dev);
do {
struct acpi_device *ad = NULL;
int r;
r = acpi_bus_get_device(dis_handle, &ad);
if (r || !ad) {
pr_warn("Cannot get ACPI device for PCI device\n");
break;
}
if (ad->power.state == ACPI_STATE_UNKNOWN) {
pr_debug("ACPI power state is unknown, forcing D0\n");
ad->power.state = ACPI_STATE_D0;
}
} while (0);
pci_set_power_state(dis_dev, PCI_D3cold);
if (bbswitch_acpi_off())
pr_warn("The discrete card could not be disabled by a _DSM call\n");
}
