vga_switcheroo: Add a helper function to get the client state

Add vga_switcheroo_get_client_state() to get the current state of the
client.  This is necessary to determine the proper initial state of
audio clients in HD-audio driver.

Acked-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2012-06-07 12:15:15 +02:00
commit c8e9cf7bb2
2 changed files with 20 additions and 0 deletions

View file

@ -12,6 +12,9 @@
enum vga_switcheroo_state {
VGA_SWITCHEROO_OFF,
VGA_SWITCHEROO_ON,
/* below are referred only from vga_switcheroo_get_client_state() */
VGA_SWITCHEROO_INIT,
VGA_SWITCHEROO_NOT_FOUND,
};
enum vga_switcheroo_client_id {
@ -50,6 +53,8 @@ void vga_switcheroo_unregister_handler(void);
int vga_switcheroo_process_delayed_switch(void);
int vga_switcheroo_get_client_state(struct pci_dev *dev);
#else
static inline void vga_switcheroo_unregister_client(struct pci_dev *dev) {}
@ -62,5 +67,7 @@ static inline int vga_switcheroo_register_audio_client(struct pci_dev *pdev,
int id, bool active) { return 0; }
static inline void vga_switcheroo_unregister_handler(void) {}
static inline int vga_switcheroo_process_delayed_switch(void) { return 0; }
static inline int vga_switcheroo_get_client_state(struct pci_dev *dev) { return VGA_SWITCHEROO_CLIENT_ON; }
#endif