mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-02 05:27:00 +07:00
Merge branch 'topic/vga-switcheroo' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound into drm-core-next
* 'topic/vga-switcheroo' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: vga_switcheroo: Add the support for audio clients vga_switcheroo: Introduce struct vga_switcheroo_client_ops vga_switcheroo: Refactor using linked list
This commit is contained in:
Dave Airlie
commit
f3b7e17c4b
@ -1271,6 +1271,12 @@ static bool i915_switcheroo_can_switch(struct pci_dev *pdev)
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return can_switch;
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}
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static const struct vga_switcheroo_client_ops i915_switcheroo_ops = {
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.set_gpu_state = i915_switcheroo_set_state,
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.reprobe = NULL,
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.can_switch = i915_switcheroo_can_switch,
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};
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static int i915_load_modeset_init(struct drm_device *dev)
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{
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struct drm_i915_private *dev_priv = dev->dev_private;
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@ -1293,10 +1299,7 @@ static int i915_load_modeset_init(struct drm_device *dev)
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intel_register_dsm_handler();
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ret = vga_switcheroo_register_client(dev->pdev,
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i915_switcheroo_set_state,
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NULL,
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i915_switcheroo_can_switch);
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ret = vga_switcheroo_register_client(dev->pdev, &i915_switcheroo_ops);
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if (ret)
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goto cleanup_vga_client;
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@ -662,6 +662,12 @@ nouveau_card_channel_init(struct drm_device *dev)
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return ret;
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}
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static const struct vga_switcheroo_client_ops nouveau_switcheroo_ops = {
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.set_gpu_state = nouveau_switcheroo_set_state,
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.reprobe = nouveau_switcheroo_reprobe,
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.can_switch = nouveau_switcheroo_can_switch,
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};
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int
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nouveau_card_init(struct drm_device *dev)
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{
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@ -670,9 +676,7 @@ nouveau_card_init(struct drm_device *dev)
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int ret, e = 0;
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vga_client_register(dev->pdev, dev, NULL, nouveau_vga_set_decode);
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vga_switcheroo_register_client(dev->pdev, nouveau_switcheroo_set_state,
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nouveau_switcheroo_reprobe,
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nouveau_switcheroo_can_switch);
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vga_switcheroo_register_client(dev->pdev, &nouveau_switcheroo_ops);
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/* Initialise internal driver API hooks */
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ret = nouveau_init_engine_ptrs(dev);
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@ -697,6 +697,11 @@ static bool radeon_switcheroo_can_switch(struct pci_dev *pdev)
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return can_switch;
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}
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static const struct vga_switcheroo_client_ops radeon_switcheroo_ops = {
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.set_gpu_state = radeon_switcheroo_set_state,
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.reprobe = NULL,
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.can_switch = radeon_switcheroo_can_switch,
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};
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int radeon_device_init(struct radeon_device *rdev,
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struct drm_device *ddev,
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@ -809,10 +814,7 @@ int radeon_device_init(struct radeon_device *rdev,
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/* this will fail for cards that aren't VGA class devices, just
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* ignore it */
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vga_client_register(rdev->pdev, rdev, NULL, radeon_vga_set_decode);
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vga_switcheroo_register_client(rdev->pdev,
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radeon_switcheroo_set_state,
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NULL,
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radeon_switcheroo_can_switch);
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vga_switcheroo_register_client(rdev->pdev, &radeon_switcheroo_ops);
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r = radeon_init(rdev);
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if (r)
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@ -34,11 +34,10 @@ struct vga_switcheroo_client {
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struct pci_dev *pdev;
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struct fb_info *fb_info;
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int pwr_state;
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void (*set_gpu_state)(struct pci_dev *pdev, enum vga_switcheroo_state);
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void (*reprobe)(struct pci_dev *pdev);
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bool (*can_switch)(struct pci_dev *pdev);
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const struct vga_switcheroo_client_ops *ops;
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int id;
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bool active;
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struct list_head list;
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};
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static DEFINE_MUTEX(vgasr_mutex);
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@ -53,16 +52,23 @@ struct vgasr_priv {
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struct dentry *switch_file;
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int registered_clients;
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struct vga_switcheroo_client clients[VGA_SWITCHEROO_MAX_CLIENTS];
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struct list_head clients;
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struct vga_switcheroo_handler *handler;
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};
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#define ID_BIT_AUDIO 0x100
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#define client_is_audio(c) ((c)->id & ID_BIT_AUDIO)
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#define client_is_vga(c) ((c)->id == -1 || !client_is_audio(c))
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#define client_id(c) ((c)->id & ~ID_BIT_AUDIO)
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static int vga_switcheroo_debugfs_init(struct vgasr_priv *priv);
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static void vga_switcheroo_debugfs_fini(struct vgasr_priv *priv);
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/* only one switcheroo per system */
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static struct vgasr_priv vgasr_priv;
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static struct vgasr_priv vgasr_priv = {
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.clients = LIST_HEAD_INIT(vgasr_priv.clients),
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};
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int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler)
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{
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@ -88,72 +94,119 @@ EXPORT_SYMBOL(vga_switcheroo_unregister_handler);
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static void vga_switcheroo_enable(void)
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{
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int i;
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int ret;
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struct vga_switcheroo_client *client;
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/* call the handler to init */
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vgasr_priv.handler->init();
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for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) {
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ret = vgasr_priv.handler->get_client_id(vgasr_priv.clients[i].pdev);
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list_for_each_entry(client, &vgasr_priv.clients, list) {
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if (client->id != -1)
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continue;
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ret = vgasr_priv.handler->get_client_id(client->pdev);
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if (ret < 0)
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return;
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vgasr_priv.clients[i].id = ret;
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client->id = ret;
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}
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vga_switcheroo_debugfs_init(&vgasr_priv);
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vgasr_priv.active = true;
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}
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int vga_switcheroo_register_client(struct pci_dev *pdev,
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void (*set_gpu_state)(struct pci_dev *pdev, enum vga_switcheroo_state),
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void (*reprobe)(struct pci_dev *pdev),
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bool (*can_switch)(struct pci_dev *pdev))
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static int register_client(struct pci_dev *pdev,
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const struct vga_switcheroo_client_ops *ops,
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int id, bool active)
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{
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int index;
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struct vga_switcheroo_client *client;
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client = kzalloc(sizeof(*client), GFP_KERNEL);
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if (!client)
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return -ENOMEM;
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client->pwr_state = VGA_SWITCHEROO_ON;
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client->pdev = pdev;
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client->ops = ops;
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client->id = id;
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client->active = active;
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mutex_lock(&vgasr_mutex);
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/* don't do IGD vs DIS here */
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if (vgasr_priv.registered_clients & 1)
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index = 1;
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else
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index = 0;
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vgasr_priv.clients[index].pwr_state = VGA_SWITCHEROO_ON;
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vgasr_priv.clients[index].pdev = pdev;
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vgasr_priv.clients[index].set_gpu_state = set_gpu_state;
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vgasr_priv.clients[index].reprobe = reprobe;
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vgasr_priv.clients[index].can_switch = can_switch;
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vgasr_priv.clients[index].id = -1;
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if (pdev == vga_default_device())
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vgasr_priv.clients[index].active = true;
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vgasr_priv.registered_clients |= (1 << index);
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list_add_tail(&client->list, &vgasr_priv.clients);
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if (client_is_vga(client))
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vgasr_priv.registered_clients++;
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/* if we get two clients + handler */
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if (vgasr_priv.registered_clients == 0x3 && vgasr_priv.handler) {
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if (!vgasr_priv.active &&
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vgasr_priv.registered_clients == 2 && vgasr_priv.handler) {
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printk(KERN_INFO "vga_switcheroo: enabled\n");
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vga_switcheroo_enable();
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}
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mutex_unlock(&vgasr_mutex);
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return 0;
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}
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int vga_switcheroo_register_client(struct pci_dev *pdev,
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const struct vga_switcheroo_client_ops *ops)
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{
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return register_client(pdev, ops, -1,
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pdev == vga_default_device());
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}
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EXPORT_SYMBOL(vga_switcheroo_register_client);
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int vga_switcheroo_register_audio_client(struct pci_dev *pdev,
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const struct vga_switcheroo_client_ops *ops,
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int id, bool active)
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{
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return register_client(pdev, ops, id | ID_BIT_AUDIO, active);
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}
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EXPORT_SYMBOL(vga_switcheroo_register_audio_client);
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static struct vga_switcheroo_client *
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find_client_from_pci(struct list_head *head, struct pci_dev *pdev)
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{
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struct vga_switcheroo_client *client;
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list_for_each_entry(client, head, list)
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if (client->pdev == pdev)
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return client;
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return NULL;
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}
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static struct vga_switcheroo_client *
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find_client_from_id(struct list_head *head, int client_id)
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{
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struct vga_switcheroo_client *client;
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list_for_each_entry(client, head, list)
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if (client->id == client_id)
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return client;
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return NULL;
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}
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static struct vga_switcheroo_client *
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find_active_client(struct list_head *head)
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{
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struct vga_switcheroo_client *client;
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list_for_each_entry(client, head, list)
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if (client->active && client_is_vga(client))
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return client;
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return NULL;
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}
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void vga_switcheroo_unregister_client(struct pci_dev *pdev)
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{
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int i;
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struct vga_switcheroo_client *client;
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mutex_lock(&vgasr_mutex);
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for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) {
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if (vgasr_priv.clients[i].pdev == pdev) {
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vgasr_priv.registered_clients &= ~(1 << i);
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break;
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}
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client = find_client_from_pci(&vgasr_priv.clients, pdev);
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if (client) {
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if (client_is_vga(client))
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vgasr_priv.registered_clients--;
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list_del(&client->list);
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kfree(client);
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}
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if (vgasr_priv.active && vgasr_priv.registered_clients < 2) {
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printk(KERN_INFO "vga_switcheroo: disabled\n");
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vga_switcheroo_debugfs_fini(&vgasr_priv);
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vgasr_priv.active = false;
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}
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printk(KERN_INFO "vga_switcheroo: disabled\n");
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vga_switcheroo_debugfs_fini(&vgasr_priv);
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vgasr_priv.active = false;
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mutex_unlock(&vgasr_mutex);
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}
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EXPORT_SYMBOL(vga_switcheroo_unregister_client);
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@ -161,29 +214,29 @@ EXPORT_SYMBOL(vga_switcheroo_unregister_client);
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void vga_switcheroo_client_fb_set(struct pci_dev *pdev,
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struct fb_info *info)
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{
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int i;
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struct vga_switcheroo_client *client;
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mutex_lock(&vgasr_mutex);
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for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) {
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if (vgasr_priv.clients[i].pdev == pdev) {
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vgasr_priv.clients[i].fb_info = info;
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break;
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}
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}
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client = find_client_from_pci(&vgasr_priv.clients, pdev);
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if (client)
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client->fb_info = info;
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mutex_unlock(&vgasr_mutex);
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}
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EXPORT_SYMBOL(vga_switcheroo_client_fb_set);
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static int vga_switcheroo_show(struct seq_file *m, void *v)
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{
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int i;
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struct vga_switcheroo_client *client;
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int i = 0;
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mutex_lock(&vgasr_mutex);
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for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) {
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seq_printf(m, "%d:%s:%c:%s:%s\n", i,
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vgasr_priv.clients[i].id == VGA_SWITCHEROO_DIS ? "DIS" : "IGD",
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vgasr_priv.clients[i].active ? '+' : ' ',
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vgasr_priv.clients[i].pwr_state ? "Pwr" : "Off",
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pci_name(vgasr_priv.clients[i].pdev));
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list_for_each_entry(client, &vgasr_priv.clients, list) {
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seq_printf(m, "%d:%s%s:%c:%s:%s\n", i,
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client_id(client) == VGA_SWITCHEROO_DIS ? "DIS" : "IGD",
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client_is_vga(client) ? "" : "-Audio",
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client->active ? '+' : ' ',
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client->pwr_state ? "Pwr" : "Off",
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pci_name(client->pdev));
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i++;
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}
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mutex_unlock(&vgasr_mutex);
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return 0;
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@ -199,7 +252,7 @@ static int vga_switchon(struct vga_switcheroo_client *client)
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if (vgasr_priv.handler->power_state)
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vgasr_priv.handler->power_state(client->id, VGA_SWITCHEROO_ON);
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/* call the driver callback to turn on device */
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client->set_gpu_state(client->pdev, VGA_SWITCHEROO_ON);
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client->ops->set_gpu_state(client->pdev, VGA_SWITCHEROO_ON);
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client->pwr_state = VGA_SWITCHEROO_ON;
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return 0;
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}
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@ -207,25 +260,30 @@ static int vga_switchon(struct vga_switcheroo_client *client)
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static int vga_switchoff(struct vga_switcheroo_client *client)
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{
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/* call the driver callback to turn off device */
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client->set_gpu_state(client->pdev, VGA_SWITCHEROO_OFF);
|
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client->ops->set_gpu_state(client->pdev, VGA_SWITCHEROO_OFF);
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if (vgasr_priv.handler->power_state)
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vgasr_priv.handler->power_state(client->id, VGA_SWITCHEROO_OFF);
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client->pwr_state = VGA_SWITCHEROO_OFF;
|
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return 0;
|
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}
|
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|
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static void set_audio_state(int id, int state)
|
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{
|
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struct vga_switcheroo_client *client;
|
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|
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client = find_client_from_id(&vgasr_priv.clients, id | ID_BIT_AUDIO);
|
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if (client && client->pwr_state != state) {
|
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client->ops->set_gpu_state(client->pdev, state);
|
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client->pwr_state = state;
|
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}
|
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}
|
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|
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/* stage one happens before delay */
|
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static int vga_switchto_stage1(struct vga_switcheroo_client *new_client)
|
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{
|
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int i;
|
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struct vga_switcheroo_client *active = NULL;
|
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struct vga_switcheroo_client *active;
|
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|
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for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) {
|
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if (vgasr_priv.clients[i].active == true) {
|
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active = &vgasr_priv.clients[i];
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break;
|
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}
|
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}
|
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active = find_active_client(&vgasr_priv.clients);
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if (!active)
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return 0;
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@ -233,6 +291,7 @@ static int vga_switchto_stage1(struct vga_switcheroo_client *new_client)
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vga_switchon(new_client);
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vga_set_default_device(new_client->pdev);
|
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set_audio_state(new_client->id, VGA_SWITCHEROO_ON);
|
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|
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return 0;
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}
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@ -241,15 +300,9 @@ static int vga_switchto_stage1(struct vga_switcheroo_client *new_client)
|
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static int vga_switchto_stage2(struct vga_switcheroo_client *new_client)
|
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{
|
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int ret;
|
||||
int i;
|
||||
struct vga_switcheroo_client *active = NULL;
|
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struct vga_switcheroo_client *active;
|
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|
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for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) {
|
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if (vgasr_priv.clients[i].active == true) {
|
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active = &vgasr_priv.clients[i];
|
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break;
|
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}
|
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}
|
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active = find_active_client(&vgasr_priv.clients);
|
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if (!active)
|
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return 0;
|
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|
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@ -265,8 +318,10 @@ static int vga_switchto_stage2(struct vga_switcheroo_client *new_client)
|
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if (ret)
|
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return ret;
|
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|
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if (new_client->reprobe)
|
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new_client->reprobe(new_client->pdev);
|
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if (new_client->ops->reprobe)
|
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new_client->ops->reprobe(new_client->pdev);
|
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|
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set_audio_state(active->id, VGA_SWITCHEROO_OFF);
|
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|
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if (active->pwr_state == VGA_SWITCHEROO_ON)
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vga_switchoff(active);
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@ -275,13 +330,26 @@ static int vga_switchto_stage2(struct vga_switcheroo_client *new_client)
|
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return 0;
|
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}
|
||||
|
||||
static bool check_can_switch(void)
|
||||
{
|
||||
struct vga_switcheroo_client *client;
|
||||
|
||||
list_for_each_entry(client, &vgasr_priv.clients, list) {
|
||||
if (!client->ops->can_switch(client->pdev)) {
|
||||
printk(KERN_ERR "vga_switcheroo: client %x refused switch\n", client->id);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
static ssize_t
|
||||
vga_switcheroo_debugfs_write(struct file *filp, const char __user *ubuf,
|
||||
size_t cnt, loff_t *ppos)
|
||||
{
|
||||
char usercmd[64];
|
||||
const char *pdev_name;
|
||||
int i, ret;
|
||||
int ret;
|
||||
bool delay = false, can_switch;
|
||||
bool just_mux = false;
|
||||
int client_id = -1;
|
||||
@ -302,21 +370,21 @@ vga_switcheroo_debugfs_write(struct file *filp, const char __user *ubuf,
|
||||
|
||||
/* pwr off the device not in use */
|
||||
if (strncmp(usercmd, "OFF", 3) == 0) {
|
||||
for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) {
|
||||
if (vgasr_priv.clients[i].active)
|
||||
list_for_each_entry(client, &vgasr_priv.clients, list) {
|
||||
if (client->active)
|
||||
continue;
|
||||
if (vgasr_priv.clients[i].pwr_state == VGA_SWITCHEROO_ON)
|
||||
vga_switchoff(&vgasr_priv.clients[i]);
|
||||
if (client->pwr_state == VGA_SWITCHEROO_ON)
|
||||
vga_switchoff(client);
|
||||
}
|
||||
goto out;
|
||||
}
|
||||
/* pwr on the device not in use */
|
||||
if (strncmp(usercmd, "ON", 2) == 0) {
|
||||
for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) {
|
||||
if (vgasr_priv.clients[i].active)
|
||||
list_for_each_entry(client, &vgasr_priv.clients, list) {
|
||||
if (client->active)
|
||||
continue;
|
||||
if (vgasr_priv.clients[i].pwr_state == VGA_SWITCHEROO_OFF)
|
||||
vga_switchon(&vgasr_priv.clients[i]);
|
||||
if (client->pwr_state == VGA_SWITCHEROO_OFF)
|
||||
vga_switchon(client);
|
||||
}
|
||||
goto out;
|
||||
}
|
||||
@ -349,13 +417,9 @@ vga_switcheroo_debugfs_write(struct file *filp, const char __user *ubuf,
|
||||
|
||||
if (client_id == -1)
|
||||
goto out;
|
||||
|
||||
for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) {
|
||||
if (vgasr_priv.clients[i].id == client_id) {
|
||||
client = &vgasr_priv.clients[i];
|
||||
break;
|
||||
}
|
||||
}
|
||||
client = find_client_from_id(&vgasr_priv.clients, client_id);
|
||||
if (!client)
|
||||
goto out;
|
||||
|
||||
vgasr_priv.delayed_switch_active = false;
|
||||
|
||||
@ -364,23 +428,16 @@ vga_switcheroo_debugfs_write(struct file *filp, const char __user *ubuf,
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (client->active == true)
|
||||
if (client->active)
|
||||
goto out;
|
||||
|
||||
/* okay we want a switch - test if devices are willing to switch */
|
||||
can_switch = true;
|
||||
for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) {
|
||||
can_switch = vgasr_priv.clients[i].can_switch(vgasr_priv.clients[i].pdev);
|
||||
if (can_switch == false) {
|
||||
printk(KERN_ERR "vga_switcheroo: client %d refused switch\n", i);
|
||||
break;
|
||||
}
|
||||
}
|
||||
can_switch = check_can_switch();
|
||||
|
||||
if (can_switch == false && delay == false)
|
||||
goto out;
|
||||
|
||||
if (can_switch == true) {
|
||||
if (can_switch) {
|
||||
pdev_name = pci_name(client->pdev);
|
||||
ret = vga_switchto_stage1(client);
|
||||
if (ret)
|
||||
@ -452,10 +509,8 @@ static int vga_switcheroo_debugfs_init(struct vgasr_priv *priv)
|
||||
|
||||
int vga_switcheroo_process_delayed_switch(void)
|
||||
{
|
||||
struct vga_switcheroo_client *client = NULL;
|
||||
struct vga_switcheroo_client *client;
|
||||
const char *pdev_name;
|
||||
bool can_switch = true;
|
||||
int i;
|
||||
int ret;
|
||||
int err = -EINVAL;
|
||||
|
||||
@ -465,17 +520,9 @@ int vga_switcheroo_process_delayed_switch(void)
|
||||
|
||||
printk(KERN_INFO "vga_switcheroo: processing delayed switch to %d\n", vgasr_priv.delayed_client_id);
|
||||
|
||||
for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) {
|
||||
if (vgasr_priv.clients[i].id == vgasr_priv.delayed_client_id)
|
||||
client = &vgasr_priv.clients[i];
|
||||
can_switch = vgasr_priv.clients[i].can_switch(vgasr_priv.clients[i].pdev);
|
||||
if (can_switch == false) {
|
||||
printk(KERN_ERR "vga_switcheroo: client %d refused switch\n", i);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (can_switch == false || client == NULL)
|
||||
client = find_client_from_id(&vgasr_priv.clients,
|
||||
vgasr_priv.delayed_client_id);
|
||||
if (!client || !check_can_switch())
|
||||
goto err;
|
||||
|
||||
pdev_name = pci_name(client->pdev);
|
||||
|
||||
@ -28,13 +28,19 @@ struct vga_switcheroo_handler {
|
||||
int (*get_client_id)(struct pci_dev *pdev);
|
||||
};
|
||||
|
||||
struct vga_switcheroo_client_ops {
|
||||
void (*set_gpu_state)(struct pci_dev *dev, enum vga_switcheroo_state);
|
||||
void (*reprobe)(struct pci_dev *dev);
|
||||
bool (*can_switch)(struct pci_dev *dev);
|
||||
};
|
||||
|
||||
#if defined(CONFIG_VGA_SWITCHEROO)
|
||||
void vga_switcheroo_unregister_client(struct pci_dev *dev);
|
||||
int vga_switcheroo_register_client(struct pci_dev *dev,
|
||||
void (*set_gpu_state)(struct pci_dev *dev, enum vga_switcheroo_state),
|
||||
void (*reprobe)(struct pci_dev *dev),
|
||||
bool (*can_switch)(struct pci_dev *dev));
|
||||
const struct vga_switcheroo_client_ops *ops);
|
||||
int vga_switcheroo_register_audio_client(struct pci_dev *pdev,
|
||||
const struct vga_switcheroo_client_ops *ops,
|
||||
int id, bool active);
|
||||
|
||||
void vga_switcheroo_client_fb_set(struct pci_dev *dev,
|
||||
struct fb_info *info);
|
||||
@ -48,11 +54,12 @@ int vga_switcheroo_process_delayed_switch(void);
|
||||
|
||||
static inline void vga_switcheroo_unregister_client(struct pci_dev *dev) {}
|
||||
static inline int vga_switcheroo_register_client(struct pci_dev *dev,
|
||||
void (*set_gpu_state)(struct pci_dev *dev, enum vga_switcheroo_state),
|
||||
void (*reprobe)(struct pci_dev *dev),
|
||||
bool (*can_switch)(struct pci_dev *dev)) { return 0; }
|
||||
const struct vga_switcheroo_client_ops *ops) { return 0; }
|
||||
static inline void vga_switcheroo_client_fb_set(struct pci_dev *dev, struct fb_info *info) {}
|
||||
static inline int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler) { return 0; }
|
||||
static inline int vga_switcheroo_register_audio_client(struct pci_dev *pdev,
|
||||
const struct vga_switcheroo_client_ops *ops,
|
||||
int id, bool active) { return 0; }
|
||||
static inline void vga_switcheroo_unregister_handler(void) {}
|
||||
static inline int vga_switcheroo_process_delayed_switch(void) { return 0; }
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user