|
|
|
@ -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);
|
|
|
|
|