1 #include <linux/vgaarb.h>
2 #include <linux/vga_switcheroo.h>
5 #include "drm_crtc_helper.h"
7 #include "nouveau_drm.h"
8 #include "nouveau_acpi.h"
9 #include "nouveau_fbcon.h"
12 nouveau_vga_set_decode(void *priv, bool state)
14 struct nouveau_device *device = nouveau_dev(priv);
16 if (device->chipset >= 0x40)
17 nv_wr32(device, 0x088054, state);
19 nv_wr32(device, 0x001854, state);
22 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
23 VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
25 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
29 nouveau_switcheroo_set_state(struct pci_dev *pdev,
30 enum vga_switcheroo_state state)
32 struct drm_device *dev = pci_get_drvdata(pdev);
33 pm_message_t pmm = { .event = PM_EVENT_SUSPEND };
35 if (state == VGA_SWITCHEROO_ON) {
36 printk(KERN_ERR "VGA switcheroo: switched nouveau on\n");
37 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
38 nouveau_drm_resume(pdev);
39 drm_kms_helper_poll_enable(dev);
40 dev->switch_power_state = DRM_SWITCH_POWER_ON;
42 printk(KERN_ERR "VGA switcheroo: switched nouveau off\n");
43 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
44 drm_kms_helper_poll_disable(dev);
45 nouveau_switcheroo_optimus_dsm();
46 nouveau_drm_suspend(pdev, pmm);
47 dev->switch_power_state = DRM_SWITCH_POWER_OFF;
52 nouveau_switcheroo_reprobe(struct pci_dev *pdev)
54 struct drm_device *dev = pci_get_drvdata(pdev);
55 nouveau_fbcon_output_poll_changed(dev);
59 nouveau_switcheroo_can_switch(struct pci_dev *pdev)
61 struct drm_device *dev = pci_get_drvdata(pdev);
64 spin_lock(&dev->count_lock);
65 can_switch = (dev->open_count == 0);
66 spin_unlock(&dev->count_lock);
70 static const struct vga_switcheroo_client_ops
71 nouveau_switcheroo_ops = {
72 .set_gpu_state = nouveau_switcheroo_set_state,
73 .reprobe = nouveau_switcheroo_reprobe,
74 .can_switch = nouveau_switcheroo_can_switch,
78 nouveau_vga_init(struct nouveau_drm *drm)
80 struct drm_device *dev = drm->dev;
81 vga_client_register(dev->pdev, dev, NULL, nouveau_vga_set_decode);
82 vga_switcheroo_register_client(dev->pdev, &nouveau_switcheroo_ops);
86 nouveau_vga_fini(struct nouveau_drm *drm)
88 struct drm_device *dev = drm->dev;
89 vga_switcheroo_unregister_client(dev->pdev);
90 vga_client_register(dev->pdev, NULL, NULL, NULL);
95 nouveau_vga_lastclose(struct drm_device *dev)
97 vga_switcheroo_process_delayed_switch();