bbswitch: Add usage instructions to header

13 years ago · 10ad4041f1
parent 8c0ea9bc34
commit 10ad4041f1
1 changed files with 7 additions and 3 deletions
--- a/bbswitch.c
+++ b/bbswitch.c
@ -1,9 +1,13 @@
 /**
 * Disable discrete graphics (currently nvidia only)
 *
- * Based on:
- * byo-switcheroo   Alex Williamson <alex.williamson@redhat.com>
- * acpi_call        Michal Kottman
+ * Usage:
+ * Disable discrete card
+ * # echo OFF > /proc/acpi/bbswitch
+ * Enable discrete card
+ * # echo ON > /proc/acpi/bbswitch
+ * Get status
+ * # cat /proc/acpi/bbswitch
 */
 #include <linux/pci.h>
 #include <linux/acpi.h>