diff options
| -rw-r--r-- | drivers/gpu/vga/vga_switcheroo.c | 13 | ||||
| -rw-r--r-- | include/linux/vga_switcheroo.h | 7 |
2 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpu/vga/vga_switcheroo.c b/drivers/gpu/vga/vga_switcheroo.c index 38f9534ac513..eb4f64f0a565 100644 --- a/drivers/gpu/vga/vga_switcheroo.c +++ b/drivers/gpu/vga/vga_switcheroo.c @@ -190,6 +190,19 @@ find_active_client(struct list_head *head) return NULL; } +int vga_switcheroo_get_client_state(struct pci_dev *pdev) +{ + struct vga_switcheroo_client *client; + + client = find_client_from_pci(&vgasr_priv.clients, pdev); + if (!client) + return VGA_SWITCHEROO_NOT_FOUND; + if (!vgasr_priv.active) + return VGA_SWITCHEROO_INIT; + return client->pwr_state; +} +EXPORT_SYMBOL(vga_switcheroo_get_client_state); + void vga_switcheroo_unregister_client(struct pci_dev *pdev) { struct vga_switcheroo_client *client; diff --git a/include/linux/vga_switcheroo.h b/include/linux/vga_switcheroo.h index b455c7c212eb..b176342ca031 100644 --- a/include/linux/vga_switcheroo.h +++ b/include/linux/vga_switcheroo.h @@ -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 |