search for: pwr_state

Modernize vga_switcheroo by using a "device link" to enforce a runtime PM dependency from an HDA controller to the GPU it's integrated into. Remove thereby obsoleted code and fix a bunch of bugs. Device links were introduced in v4.10. Users might see a small power saving if the discrete GPU is in use and its HDA controller is not, because the HDA controller is now allowed to runtime

Modernize vga_switcheroo by using a device link to enforce a runtime PM dependency from an HDA controller to the GPU it's integrated into, v2. Changes since v1: - Replace patch [1/7] to use pci_save_state() / pci_restore_state() for consistency between runtime PM code path of bound and unbound devices. (Rafael, Bjorn) - Patch [5/7]: Drop an unnecessary initialization. (Bjorn) Rephrase

...5,10 +654,8 @@ static void set_audio_state(enum vga_switcheroo_client_id id, struct vga_switcheroo_client *client; client = find_client_from_id(&vgasr_priv.clients, id | ID_BIT_AUDIO); - if (client) { + if (client) client->ops->set_gpu_state(client->pdev, state); - client->pwr_state = state; - } } /* stage one happens before delay */ @@ -953,10 +950,6 @@ EXPORT_SYMBOL(vga_switcheroo_process_delayed_switch); * Specifying nouveau.runpm=0, radeon.runpm=0 or amdgpu.runpm=0 on the kernel * command line disables it. * - * When the driver decides to power up or down, it not...

...o_state(enum vga_switcheroo_client_id id, > struct vga_switcheroo_client *client; > > client = find_client_from_id(&vgasr_priv.clients, id | ID_BIT_AUDIO); > - if (client) { > + if (client) > client->ops->set_gpu_state(client->pdev, state); > - client->pwr_state = state; > - } > } > > /* stage one happens before delay */ > @@ -953,10 +950,6 @@ EXPORT_SYMBOL(vga_switcheroo_process_delayed_switch); > * Specifying nouveau.runpm=0, radeon.runpm=0 or amdgpu.runpm=0 on the kernel > * command line disables it. > * > - * When t...