1 #include <linux/vgaarb.h>
2 #include <linux/vga_switcheroo.h>
5 #include <drm/drm_crtc_helper.h>
7 #include "nouveau_drm.h"
8 #include "nouveau_acpi.h"
9 #include "nouveau_fbcon.h"
10 #include "nouveau_vga.h"
13 nouveau_vga_set_decode(void *priv, bool state)
15 struct nvif_device *device = &nouveau_drm(priv)->device;
17 if (device->info.family == NV_DEVICE_INFO_V0_CURIE &&
18 device->info.chipset >= 0x4c)
19 nvif_wr32(device, 0x088060, state);
21 if (device->info.chipset >= 0x40)
22 nvif_wr32(device, 0x088054, state);
24 nvif_wr32(device, 0x001854, state);
27 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
28 VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
30 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
34 nouveau_switcheroo_set_state(struct pci_dev *pdev,
35 enum vga_switcheroo_state state)
37 struct drm_device *dev = pci_get_drvdata(pdev);
39 if ((nouveau_is_optimus() || nouveau_is_v1_dsm()) && state == VGA_SWITCHEROO_OFF)
42 if (state == VGA_SWITCHEROO_ON) {
43 printk(KERN_ERR "VGA switcheroo: switched nouveau on\n");
44 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
45 nouveau_pmops_resume(&pdev->dev);
46 drm_kms_helper_poll_enable(dev);
47 dev->switch_power_state = DRM_SWITCH_POWER_ON;
49 printk(KERN_ERR "VGA switcheroo: switched nouveau off\n");
50 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
51 drm_kms_helper_poll_disable(dev);
52 nouveau_switcheroo_optimus_dsm();
53 nouveau_pmops_suspend(&pdev->dev);
54 dev->switch_power_state = DRM_SWITCH_POWER_OFF;
59 nouveau_switcheroo_reprobe(struct pci_dev *pdev)
61 struct drm_device *dev = pci_get_drvdata(pdev);
62 nouveau_fbcon_output_poll_changed(dev);
66 nouveau_switcheroo_can_switch(struct pci_dev *pdev)
68 struct drm_device *dev = pci_get_drvdata(pdev);
71 * FIXME: open_count is protected by drm_global_mutex but that would lead to
72 * locking inversion with the driver load path. And the access here is
73 * completely racy anyway. So don't bother with locking for now.
75 return dev->open_count == 0;
78 static const struct vga_switcheroo_client_ops
79 nouveau_switcheroo_ops = {
80 .set_gpu_state = nouveau_switcheroo_set_state,
81 .reprobe = nouveau_switcheroo_reprobe,
82 .can_switch = nouveau_switcheroo_can_switch,
86 nouveau_vga_init(struct nouveau_drm *drm)
88 struct drm_device *dev = drm->dev;
91 /* only relevant for PCI devices */
95 vga_client_register(dev->pdev, dev, NULL, nouveau_vga_set_decode);
97 if (nouveau_runtime_pm == 1)
99 if ((nouveau_runtime_pm == -1) && (nouveau_is_optimus() || nouveau_is_v1_dsm()))
101 vga_switcheroo_register_client(dev->pdev, &nouveau_switcheroo_ops, runtime);
103 if (runtime && nouveau_is_v1_dsm() && !nouveau_is_optimus())
104 vga_switcheroo_init_domain_pm_ops(drm->dev->dev, &drm->vga_pm_domain);
108 nouveau_vga_fini(struct nouveau_drm *drm)
110 struct drm_device *dev = drm->dev;
111 bool runtime = false;
113 if (nouveau_runtime_pm == 1)
115 if ((nouveau_runtime_pm == -1) && (nouveau_is_optimus() || nouveau_is_v1_dsm()))
118 vga_switcheroo_unregister_client(dev->pdev);
119 if (runtime && nouveau_is_v1_dsm() && !nouveau_is_optimus())
120 vga_switcheroo_fini_domain_pm_ops(drm->dev->dev);
121 vga_client_register(dev->pdev, NULL, NULL, NULL);
126 nouveau_vga_lastclose(struct drm_device *dev)
128 vga_switcheroo_process_delayed_switch();