shark/bbswitch-g14
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Added module options to turn the card on/off on (un)load

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Lekensteyn 2011-12-30 18:43:46 +01:00
parent 7e792ef176
commit 62f9560821
1 changed files with 26 additions and 0 deletions
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26
bbswitch.c
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@ -21,6 +21,19 @@ MODULE_DESCRIPTION("Toggle the discrete graphics card");
MODULE_AUTHOR("Peter Lekensteyn <lekensteyn@gmail.com>");
MODULE_VERSION("0.2");
enum {
CARD_UNCHANGED = -1,
CARD_OFF = 0,
CARD_ON = 1,
};
static int load_state = CARD_UNCHANGED;
MODULE_PARM_DESC(load_state, "Initial card state (0 = off, 1 = on, -1 = unchanged)");
module_param(load_state, int, 0400);
static int unload_state = CARD_UNCHANGED;
MODULE_PARM_DESC(unload_state, "Card state on unload (0 = off, 1 = on, -1 = unchanged)");
module_param(unload_state, int, 0600);
extern struct proc_dir_entry *acpi_root_dir;
static const char acpi_optimus_dsm_muid[16] = {
@ -357,6 +370,11 @@ static int __init bbswitch_init(void) {
return -ENOMEM;
}
if (load_state == CARD_ON)
bbswitch_on();
else if (load_state == CARD_OFF)
bbswitch_off();
printk(KERN_INFO "bbswitch: Succesfully loaded. Discrete card %s is %s\n",
dev_name(&dis_dev->dev), is_card_disabled() ? "off" : "on");
@ -369,6 +387,14 @@ static int __init bbswitch_init(void) {
static void __exit bbswitch_exit(void) {
remove_proc_entry("bbswitch", acpi_root_dir);
if (unload_state == CARD_ON)
bbswitch_on();
else if (unload_state == CARD_OFF)
bbswitch_off();
printk(KERN_INFO "bbswitch: Unloaded. Discrete card %s is %s\n",
dev_name(&dis_dev->dev), is_card_disabled() ? "off" : "on");
if (nb.notifier_call)
unregister_pm_notifier(&nb);
}