diff options
| -rw-r--r-- | drivers/gpu/drm/i915/i915_dma.c | 11 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_state.c | 10 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_device.c | 10 | ||||
| -rw-r--r-- | drivers/gpu/vga/vga_switcheroo.c | 277 | ||||
| -rw-r--r-- | include/linux/vga_switcheroo.h | 19 |
5 files changed, 195 insertions, 132 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 006ea473b57..42d91e84162 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -1271,6 +1271,12 @@ static bool i915_switcheroo_can_switch(struct pci_dev *pdev) return can_switch; } +static const struct vga_switcheroo_client_ops i915_switcheroo_ops = { + .set_gpu_state = i915_switcheroo_set_state, + .reprobe = NULL, + .can_switch = i915_switcheroo_can_switch, +}; + static int i915_load_modeset_init(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; @@ -1293,10 +1299,7 @@ static int i915_load_modeset_init(struct drm_device *dev) intel_register_dsm_handler(); - ret = vga_switcheroo_register_client(dev->pdev, - i915_switcheroo_set_state, - NULL, - i915_switcheroo_can_switch); + ret = vga_switcheroo_register_client(dev->pdev, &i915_switcheroo_ops); if (ret) goto cleanup_vga_client; diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c index c2a8511e855..298c09b7556 100644 --- a/drivers/gpu/drm/nouveau/nouveau_state.c +++ b/drivers/gpu/drm/nouveau/nouveau_state.c @@ -662,6 +662,12 @@ error: return ret; } +static const struct vga_switcheroo_client_ops nouveau_switcheroo_ops = { + .set_gpu_state = nouveau_switcheroo_set_state, + .reprobe = nouveau_switcheroo_reprobe, + .can_switch = nouveau_switcheroo_can_switch, +}; + int nouveau_card_init(struct drm_device *dev) { @@ -670,9 +676,7 @@ nouveau_card_init(struct drm_device *dev) int ret, e = 0; vga_client_register(dev->pdev, dev, NULL, nouveau_vga_set_decode); - vga_switcheroo_register_client(dev->pdev, nouveau_switcheroo_set_state, - nouveau_switcheroo_reprobe, - nouveau_switcheroo_can_switch); + vga_switcheroo_register_client(dev->pdev, &nouveau_switcheroo_ops); /* Initialise internal driver API hooks */ ret = nouveau_init_engine_ptrs(dev); diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index e1bc7e96f29..3d41525c1bc 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -697,6 +697,11 @@ static bool radeon_switcheroo_can_switch(struct pci_dev *pdev) return can_switch; } +static const struct vga_switcheroo_client_ops radeon_switcheroo_ops = { + .set_gpu_state = radeon_switcheroo_set_state, + .reprobe = NULL, + .can_switch = radeon_switcheroo_can_switch, +}; int radeon_device_init(struct radeon_device *rdev, struct drm_device *ddev, @@ -809,10 +814,7 @@ int radeon_device_init(struct radeon_device *rdev, /* this will fail for cards that aren't VGA class devices, just * ignore it */ vga_client_register(rdev->pdev, rdev, NULL, radeon_vga_set_decode); - vga_switcheroo_register_client(rdev->pdev, - radeon_switcheroo_set_state, - NULL, - radeon_switcheroo_can_switch); + vga_switcheroo_register_client(rdev->pdev, &radeon_switcheroo_ops); r = radeon_init(rdev); if (r) diff --git a/drivers/gpu/vga/vga_switcheroo.c b/drivers/gpu/vga/vga_switcheroo.c index 9d830286f88..38f9534ac51 100644 --- a/drivers/gpu/vga/vga_switcheroo.c +++ b/drivers/gpu/vga/vga_switcheroo.c @@ -34,11 +34,10 @@ struct vga_switcheroo_client { struct pci_dev *pdev; struct fb_info *fb_info; int pwr_state; - void (*set_gpu_state)(struct pci_dev *pdev, enum vga_switcheroo_state); - void (*reprobe)(struct pci_dev *pdev); - bool (*can_switch)(struct pci_dev *pdev); + const struct vga_switcheroo_client_ops *ops; int id; bool active; + struct list_head list; }; static DEFINE_MUTEX(vgasr_mutex); @@ -53,16 +52,23 @@ struct vgasr_priv { struct dentry *switch_file; int registered_clients; - struct vga_switcheroo_client clients[VGA_SWITCHEROO_MAX_CLIENTS]; + struct list_head clients; struct vga_switcheroo_handler *handler; }; +#define ID_BIT_AUDIO 0x100 +#define client_is_audio(c) ((c)->id & ID_BIT_AUDIO) +#define client_is_vga(c) ((c)->id == -1 || !client_is_audio(c)) +#define client_id(c) ((c)->id & ~ID_BIT_AUDIO) + static int vga_switcheroo_debugfs_init(struct vgasr_priv *priv); static void vga_switcheroo_debugfs_fini(struct vgasr_priv *priv); /* only one switcheroo per system */ -static struct vgasr_priv vgasr_priv; +static struct vgasr_priv vgasr_priv = { + .clients = LIST_HEAD_INIT(vgasr_priv.clients), +}; int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler) { @@ -88,72 +94,119 @@ EXPORT_SYMBOL(vga_switcheroo_unregister_handler); static void vga_switcheroo_enable(void) { - int i; int ret; + struct vga_switcheroo_client *client; + /* call the handler to init */ vgasr_priv.handler->init(); - for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) { - ret = vgasr_priv.handler->get_client_id(vgasr_priv.clients[i].pdev); + list_for_each_entry(client, &vgasr_priv.clients, list) { + if (client->id != -1) + continue; + ret = vgasr_priv.handler->get_client_id(client->pdev); if (ret < 0) return; - vgasr_priv.clients[i].id = ret; + client->id = ret; } vga_switcheroo_debugfs_init(&vgasr_priv); vgasr_priv.active = true; } -int vga_switcheroo_register_client(struct pci_dev *pdev, - void (*set_gpu_state)(struct pci_dev *pdev, enum vga_switcheroo_state), - void (*reprobe)(struct pci_dev *pdev), - bool (*can_switch)(struct pci_dev *pdev)) +static int register_client(struct pci_dev *pdev, + const struct vga_switcheroo_client_ops *ops, + int id, bool active) { - int index; + struct vga_switcheroo_client *client; + + client = kzalloc(sizeof(*client), GFP_KERNEL); + if (!client) + return -ENOMEM; + + client->pwr_state = VGA_SWITCHEROO_ON; + client->pdev = pdev; + client->ops = ops; + client->id = id; + client->active = active; mutex_lock(&vgasr_mutex); - /* don't do IGD vs DIS here */ - if (vgasr_priv.registered_clients & 1) - index = 1; - else - index = 0; - - vgasr_priv.clients[index].pwr_state = VGA_SWITCHEROO_ON; - vgasr_priv.clients[index].pdev = pdev; - vgasr_priv.clients[index].set_gpu_state = set_gpu_state; - vgasr_priv.clients[index].reprobe = reprobe; - vgasr_priv.clients[index].can_switch = can_switch; - vgasr_priv.clients[index].id = -1; - if (pdev == vga_default_device()) - vgasr_priv.clients[index].active = true; - - vgasr_priv.registered_clients |= (1 << index); + list_add_tail(&client->list, &vgasr_priv.clients); + if (client_is_vga(client)) + vgasr_priv.registered_clients++; /* if we get two clients + handler */ - if (vgasr_priv.registered_clients == 0x3 && vgasr_priv.handler) { + if (!vgasr_priv.active && + vgasr_priv.registered_clients == 2 && vgasr_priv.handler) { printk(KERN_INFO "vga_switcheroo: enabled\n"); vga_switcheroo_enable(); } mutex_unlock(&vgasr_mutex); return 0; } + +int vga_switcheroo_register_client(struct pci_dev *pdev, + const struct vga_switcheroo_client_ops *ops) +{ + return register_client(pdev, ops, -1, + pdev == vga_default_device()); +} EXPORT_SYMBOL(vga_switcheroo_register_client); +int vga_switcheroo_register_audio_client(struct pci_dev *pdev, + const struct vga_switcheroo_client_ops *ops, + int id, bool active) +{ + return register_client(pdev, ops, id | ID_BIT_AUDIO, active); +} +EXPORT_SYMBOL(vga_switcheroo_register_audio_client); + +static struct vga_switcheroo_client * +find_client_from_pci(struct list_head *head, struct pci_dev *pdev) +{ + struct vga_switcheroo_client *client; + list_for_each_entry(client, head, list) + if (client->pdev == pdev) + return client; + return NULL; +} + +static struct vga_switcheroo_client * +find_client_from_id(struct list_head *head, int client_id) +{ + struct vga_switcheroo_client *client; + list_for_each_entry(client, head, list) + if (client->id == client_id) + return client; + return NULL; +} + +static struct vga_switcheroo_client * +find_active_client(struct list_head *head) +{ + struct vga_switcheroo_client *client; + list_for_each_entry(client, head, list) + if (client->active && client_is_vga(client)) + return client; + return NULL; +} + void vga_switcheroo_unregister_client(struct pci_dev *pdev) { - int i; + struct vga_switcheroo_client *client; mutex_lock(&vgasr_mutex); - for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) { - if (vgasr_priv.clients[i].pdev == pdev) { - vgasr_priv.registered_clients &= ~(1 << i); - break; - } + client = find_client_from_pci(&vgasr_priv.clients, pdev); + if (client) { + if (client_is_vga(client)) + vgasr_priv.registered_clients--; + list_del(&client->list); + kfree(client); + } + if (vgasr_priv.active && vgasr_priv.registered_clients < 2) { + printk(KERN_INFO "vga_switcheroo: disabled\n"); + vga_switcheroo_debugfs_fini(&vgasr_priv); + vgasr_priv.active = false; } - - printk(KERN_INFO "vga_switcheroo: disabled\n"); - vga_switcheroo_debugfs_fini(&vgasr_priv); - vgasr_priv.active = false; mutex_unlock(&vgasr_mutex); } EXPORT_SYMBOL(vga_switcheroo_unregister_client); @@ -161,29 +214,29 @@ EXPORT_SYMBOL(vga_switcheroo_unregister_client); void vga_switcheroo_client_fb_set(struct pci_dev *pdev, struct fb_info *info) { - int i; + struct vga_switcheroo_client *client; mutex_lock(&vgasr_mutex); - for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) { - if (vgasr_priv.clients[i].pdev == pdev) { - vgasr_priv.clients[i].fb_info = info; - break; - } - } + client = find_client_from_pci(&vgasr_priv.clients, pdev); + if (client) + client->fb_info = info; mutex_unlock(&vgasr_mutex); } EXPORT_SYMBOL(vga_switcheroo_client_fb_set); static int vga_switcheroo_show(struct seq_file *m, void *v) { - int i; + struct vga_switcheroo_client *client; + int i = 0; mutex_lock(&vgasr_mutex); - for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) { - seq_printf(m, "%d:%s:%c:%s:%s\n", i, - vgasr_priv.clients[i].id == VGA_SWITCHEROO_DIS ? "DIS" : "IGD", - vgasr_priv.clients[i].active ? '+' : ' ', - vgasr_priv.clients[i].pwr_state ? "Pwr" : "Off", - pci_name(vgasr_priv.clients[i].pdev)); + list_for_each_entry(client, &vgasr_priv.clients, list) { + seq_printf(m, "%d:%s%s:%c:%s:%s\n", i, + client_id(client) == VGA_SWITCHEROO_DIS ? "DIS" : "IGD", + client_is_vga(client) ? "" : "-Audio", + client->active ? '+' : ' ', + client->pwr_state ? "Pwr" : "Off", + pci_name(client->pdev)); + i++; } mutex_unlock(&vgasr_mutex); return 0; @@ -199,7 +252,7 @@ static int vga_switchon(struct vga_switcheroo_client *client) if (vgasr_priv.handler->power_state) vgasr_priv.handler->power_state(client->id, VGA_SWITCHEROO_ON); /* call the driver callback to turn on device */ - client->set_gpu_state(client->pdev, VGA_SWITCHEROO_ON); + client->ops->set_gpu_state(client->pdev, VGA_SWITCHEROO_ON); client->pwr_state = VGA_SWITCHEROO_ON; return 0; } @@ -207,25 +260,30 @@ static int vga_switchon(struct vga_switcheroo_client *client) static int vga_switchoff(struct vga_switcheroo_client *client) { /* call the driver callback to turn off device */ - client->set_gpu_state(client->pdev, VGA_SWITCHEROO_OFF); + client->ops->set_gpu_state(client->pdev, VGA_SWITCHEROO_OFF); if (vgasr_priv.handler->power_state) vgasr_priv.handler->power_state(client->id, VGA_SWITCHEROO_OFF); client->pwr_state = VGA_SWITCHEROO_OFF; return 0; } +static void set_audio_state(int id, int state) +{ + struct vga_switcheroo_client *client; + + client = find_client_from_id(&vgasr_priv.clients, id | ID_BIT_AUDIO); + if (client && client->pwr_state != state) { + client->ops->set_gpu_state(client->pdev, state); + client->pwr_state = state; + } +} + /* stage one happens before delay */ static int vga_switchto_stage1(struct vga_switcheroo_client *new_client) { - int i; - struct vga_switcheroo_client *active = NULL; + struct vga_switcheroo_client *active; - for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) { - if (vgasr_priv.clients[i].active == true) { - active = &vgasr_priv.clients[i]; - break; - } - } + active = find_active_client(&vgasr_priv.clients); if (!active) return 0; @@ -233,6 +291,7 @@ static int vga_switchto_stage1(struct vga_switcheroo_client *new_client) vga_switchon(new_client); vga_set_default_device(new_client->pdev); + set_audio_state(new_client->id, VGA_SWITCHEROO_ON); return 0; } @@ -241,15 +300,9 @@ static int vga_switchto_stage1(struct vga_switcheroo_client *new_client) static int vga_switchto_stage2(struct vga_switcheroo_client *new_client) { int ret; - int i; - struct vga_switcheroo_client *active = NULL; + struct vga_switcheroo_client *active; - for (i = 0; i < VGA_SWITCHEROO_MAX_CLIENTS; i++) { - if (vgasr_priv.clients[i].active == true) { - active = &vgasr_priv.clients[i]; - break; - } - } + active = find_active_client(&vgasr_priv.clients); if (!active) return 0; @@ -265,8 +318,10 @@ static int vga_switchto_stage2(struct vga_switcheroo_client *new_client) if (ret) return ret; - if (new_client->reprobe) - new_client->reprobe(new_client->pdev); + if (new_client->ops->reprobe) + new_client->ops->reprobe(new_client->pdev); + + set_audio_state(active->id, VGA_SWITCHEROO_OFF); if (active->pwr_state == VGA_SWITCHEROO_ON) vga_switchoff(active); @@ -275,13 +330,26 @@ static int vga_switchto_stage2(struct vga_switcheroo_client *new_client) return 0; } +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 @@ fail: 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); diff --git a/include/linux/vga_switcheroo.h b/include/linux/vga_switcheroo.h index 4b9a7f596f9..b455c7c212e 100644 --- a/include/linux/vga_switcheroo.h +++ b/include/linux/vga_switcheroo.h @@ -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; } |