From: Dave Airlie airlied@redhat.com
This is required to decide if we can auto-powerdown and how to implement it.
Signed-off-by: Dave Airlie airlied@redhat.com --- drivers/gpu/drm/nouveau/nouveau_acpi.c | 30 ++++++++++++++++++------------ drivers/gpu/drm/nouveau/nouveau_acpi.h | 4 ++++ 2 files changed, 22 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_acpi.c b/drivers/gpu/drm/nouveau/nouveau_acpi.c index 48783e1..d97f200 100644 --- a/drivers/gpu/drm/nouveau/nouveau_acpi.c +++ b/drivers/gpu/drm/nouveau/nouveau_acpi.c @@ -35,6 +35,14 @@ static struct nouveau_dsm_priv { acpi_handle rom_handle; } nouveau_dsm_priv;
+bool nouveau_is_optimus(void) { + return nouveau_dsm_priv.optimus_detected; +} + +bool nouveau_is_v1_dsm(void) { + return nouveau_dsm_priv.dsm_detected; +} + #define NOUVEAU_DSM_HAS_MUX 0x1 #define NOUVEAU_DSM_HAS_OPT 0x2
@@ -183,9 +191,7 @@ static int nouveau_dsm_set_discrete_state(acpi_handle handle, enum vga_switchero
static int nouveau_dsm_switchto(enum vga_switcheroo_client_id id) { - /* perhaps the _DSM functions are mutually exclusive, but prepare for - * the future */ - if (!nouveau_dsm_priv.dsm_detected && nouveau_dsm_priv.optimus_detected) + if (!nouveau_dsm_priv.dsm_detected) return 0; if (id == VGA_SWITCHEROO_IGD) return nouveau_dsm_switch_mux(nouveau_dsm_priv.dhandle, NOUVEAU_DSM_LED_STAMINA); @@ -201,7 +207,7 @@ static int nouveau_dsm_power_state(enum vga_switcheroo_client_id id,
/* Optimus laptops have the card already disabled in * nouveau_switcheroo_set_state */ - if (!nouveau_dsm_priv.dsm_detected && nouveau_dsm_priv.optimus_detected) + if (!nouveau_dsm_priv.dsm_detected) return 0;
return nouveau_dsm_set_discrete_state(nouveau_dsm_priv.dhandle, state); @@ -283,24 +289,24 @@ static bool nouveau_dsm_detect(void) has_optimus = 1; }
- if (vga_count == 2 && has_dsm && guid_valid) { + /* find the optimus DSM or the old v1 DSM */ + if (has_optimus == 1) { acpi_get_name(nouveau_dsm_priv.dhandle, ACPI_FULL_PATHNAME, &buffer); - printk(KERN_INFO "VGA switcheroo: detected DSM switching method %s handle\n", + printk(KERN_INFO "VGA switcheroo: detected Optimus DSM method %s handle\n", acpi_method_name); - nouveau_dsm_priv.dsm_detected = true; + nouveau_dsm_priv.optimus_detected = true; ret = true; - } - - if (has_optimus == 1) { + } else if (vga_count == 2 && has_dsm && guid_valid) { acpi_get_name(nouveau_dsm_priv.dhandle, ACPI_FULL_PATHNAME, &buffer); - printk(KERN_INFO "VGA switcheroo: detected Optimus DSM method %s handle\n", + printk(KERN_INFO "VGA switcheroo: detected DSM switching method %s handle\n", acpi_method_name); - nouveau_dsm_priv.optimus_detected = true; + nouveau_dsm_priv.dsm_detected = true; ret = true; }
+ return ret; }
diff --git a/drivers/gpu/drm/nouveau/nouveau_acpi.h b/drivers/gpu/drm/nouveau/nouveau_acpi.h index 08af677..d0da230 100644 --- a/drivers/gpu/drm/nouveau/nouveau_acpi.h +++ b/drivers/gpu/drm/nouveau/nouveau_acpi.h @@ -4,6 +4,8 @@ #define ROM_BIOS_PAGE 4096
#if defined(CONFIG_ACPI) +bool nouveau_is_optimus(void); +bool nouveau_is_v1_dsm(void); void nouveau_register_dsm_handler(void); void nouveau_unregister_dsm_handler(void); void nouveau_switcheroo_optimus_dsm(void); @@ -11,6 +13,8 @@ int nouveau_acpi_get_bios_chunk(uint8_t *bios, int offset, int len); bool nouveau_acpi_rom_supported(struct pci_dev *pdev); void *nouveau_acpi_edid(struct drm_device *, struct drm_connector *); #else +static inline bool nouveau_is_optimus(void) { return false; }; +static inline bool nouveau_is_v1_dsm(void) { return false; }; static inline void nouveau_register_dsm_handler(void) {} static inline void nouveau_unregister_dsm_handler(void) {} static inline void nouveau_switcheroo_optimus_dsm(void) {}