1 #include <linux/vgaarb.h> 2 #include <linux/vga_switcheroo.h> 3 4 #include <drm/drmP.h> 5 #include <drm/drm_crtc_helper.h> 6 7 #include "nouveau_drm.h" 8 #include "nouveau_acpi.h" 9 #include "nouveau_fbcon.h" 10 #include "nouveau_vga.h" 11 12 static unsigned int 13 nouveau_vga_set_decode(void *priv, bool state) 14 { 15 struct nouveau_device *device = nouveau_dev(priv); 16 17 if (device->chipset >= 0x40) 18 nv_wr32(device, 0x088054, state); 19 else 20 nv_wr32(device, 0x001854, state); 21 22 if (state) 23 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM | 24 VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM; 25 else 26 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM; 27 } 28 29 static void 30 nouveau_switcheroo_set_state(struct pci_dev *pdev, 31 enum vga_switcheroo_state state) 32 { 33 struct drm_device *dev = pci_get_drvdata(pdev); 34 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_pmops_resume(&pdev->dev); 39 drm_kms_helper_poll_enable(dev); 40 dev->switch_power_state = DRM_SWITCH_POWER_ON; 41 } else { 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_pmops_suspend(&pdev->dev); 47 dev->switch_power_state = DRM_SWITCH_POWER_OFF; 48 } 49 } 50 51 static void 52 nouveau_switcheroo_reprobe(struct pci_dev *pdev) 53 { 54 struct drm_device *dev = pci_get_drvdata(pdev); 55 nouveau_fbcon_output_poll_changed(dev); 56 } 57 58 static bool 59 nouveau_switcheroo_can_switch(struct pci_dev *pdev) 60 { 61 struct drm_device *dev = pci_get_drvdata(pdev); 62 bool can_switch; 63 64 spin_lock(&dev->count_lock); 65 can_switch = (dev->open_count == 0); 66 spin_unlock(&dev->count_lock); 67 return can_switch; 68 } 69 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, 75 }; 76 77 void 78 nouveau_vga_init(struct nouveau_drm *drm) 79 { 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); 83 } 84 85 void 86 nouveau_vga_fini(struct nouveau_drm *drm) 87 { 88 struct drm_device *dev = drm->dev; 89 vga_switcheroo_unregister_client(dev->pdev); 90 vga_client_register(dev->pdev, NULL, NULL, NULL); 91 } 92 93 94 void 95 nouveau_vga_lastclose(struct drm_device *dev) 96 { 97 vga_switcheroo_process_delayed_switch(); 98 } 99