1 #include <linux/vgaarb.h>
2 #include <linux/vga_switcheroo.h>
5 #include <drm/drm_crtc_helper.h>
7 #include "nouveau_drv.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 nouveau_drm *drm = nouveau_drm(priv);
16 struct nvif_object *device = &drm->device.object;
18 if (drm->device.info.family == NV_DEVICE_INFO_V0_CURIE &&
19 drm->device.info.chipset >= 0x4c)
20 nvif_wr32(device, 0x088060, state);
22 if (drm->device.info.chipset >= 0x40)
23 nvif_wr32(device, 0x088054, state);
25 nvif_wr32(device, 0x001854, state);
28 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
29 VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
31 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
35 nouveau_switcheroo_set_state(struct pci_dev *pdev,
36 enum vga_switcheroo_state state)
38 struct drm_device *dev = pci_get_drvdata(pdev);
40 if ((nouveau_is_optimus() || nouveau_is_v1_dsm()) && state == VGA_SWITCHEROO_OFF)
43 if (state == VGA_SWITCHEROO_ON) {
44 printk(KERN_ERR "VGA switcheroo: switched nouveau on\n");
45 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
46 nouveau_pmops_resume(&pdev->dev);
47 drm_kms_helper_poll_enable(dev);
48 dev->switch_power_state = DRM_SWITCH_POWER_ON;
50 printk(KERN_ERR "VGA switcheroo: switched nouveau off\n");
51 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
52 drm_kms_helper_poll_disable(dev);
53 nouveau_switcheroo_optimus_dsm();
54 nouveau_pmops_suspend(&pdev->dev);
55 dev->switch_power_state = DRM_SWITCH_POWER_OFF;
60 nouveau_switcheroo_reprobe(struct pci_dev *pdev)
62 struct drm_device *dev = pci_get_drvdata(pdev);
63 nouveau_fbcon_output_poll_changed(dev);
67 nouveau_switcheroo_can_switch(struct pci_dev *pdev)
69 struct drm_device *dev = pci_get_drvdata(pdev);
72 * FIXME: open_count is protected by drm_global_mutex but that would lead to
73 * locking inversion with the driver load path. And the access here is
74 * completely racy anyway. So don't bother with locking for now.
76 return dev->open_count == 0;
79 static const struct vga_switcheroo_client_ops
80 nouveau_switcheroo_ops = {
81 .set_gpu_state = nouveau_switcheroo_set_state,
82 .reprobe = nouveau_switcheroo_reprobe,
83 .can_switch = nouveau_switcheroo_can_switch,
87 nouveau_vga_init(struct nouveau_drm *drm)
89 struct drm_device *dev = drm->dev;
92 /* only relevant for PCI devices */
96 vga_client_register(dev->pdev, dev, NULL, nouveau_vga_set_decode);
98 if (nouveau_runtime_pm == 1)
100 if ((nouveau_runtime_pm == -1) && (nouveau_is_optimus() || nouveau_is_v1_dsm()))
102 vga_switcheroo_register_client(dev->pdev, &nouveau_switcheroo_ops, runtime);
104 if (runtime && nouveau_is_v1_dsm() && !nouveau_is_optimus())
105 vga_switcheroo_init_domain_pm_ops(drm->dev->dev, &drm->vga_pm_domain);
109 nouveau_vga_fini(struct nouveau_drm *drm)
111 struct drm_device *dev = drm->dev;
112 bool runtime = false;
114 if (nouveau_runtime_pm == 1)
116 if ((nouveau_runtime_pm == -1) && (nouveau_is_optimus() || nouveau_is_v1_dsm()))
119 vga_switcheroo_unregister_client(dev->pdev);
120 if (runtime && nouveau_is_v1_dsm() && !nouveau_is_optimus())
121 vga_switcheroo_fini_domain_pm_ops(drm->dev->dev);
122 vga_client_register(dev->pdev, NULL, NULL, NULL);
127 nouveau_vga_lastclose(struct drm_device *dev)
129 vga_switcheroo_process_delayed_switch();