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-rw-r--r--drivers/gpu/drm/i915/i915_dma.c2
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_vga.c2
-rw-r--r--drivers/gpu/drm/radeon/radeon_device.c2
-rw-r--r--drivers/gpu/vga/vga_switcheroo.c147
-rw-r--r--include/linux/vga_switcheroo.h13
5 files changed, 156 insertions, 10 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 0adfe40..54f8624 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1293,7 +1293,7 @@ static int i915_load_modeset_init(struct drm_device *dev)
intel_register_dsm_handler();
- ret = vga_switcheroo_register_client(dev->pdev, &i915_switcheroo_ops);
+ ret = vga_switcheroo_register_client(dev->pdev, &i915_switcheroo_ops, false);
if (ret)
goto cleanup_vga_client;
diff --git a/drivers/gpu/drm/nouveau/nouveau_vga.c b/drivers/gpu/drm/nouveau/nouveau_vga.c
index 25d3495..40a09f1 100644
--- a/drivers/gpu/drm/nouveau/nouveau_vga.c
+++ b/drivers/gpu/drm/nouveau/nouveau_vga.c
@@ -79,7 +79,7 @@ nouveau_vga_init(struct nouveau_drm *drm)
{
struct drm_device *dev = drm->dev;
vga_client_register(dev->pdev, dev, NULL, nouveau_vga_set_decode);
- vga_switcheroo_register_client(dev->pdev, &nouveau_switcheroo_ops);
+ vga_switcheroo_register_client(dev->pdev, &nouveau_switcheroo_ops, false);
}
void
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index 82335e3..0610ca4 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -1269,7 +1269,7 @@ 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_ops);
+ vga_switcheroo_register_client(rdev->pdev, &radeon_switcheroo_ops, false);
r = radeon_init(rdev);
if (r)
diff --git a/drivers/gpu/vga/vga_switcheroo.c b/drivers/gpu/vga/vga_switcheroo.c
index cf787e1..ec0ae2d 100644
--- a/drivers/gpu/vga/vga_switcheroo.c
+++ b/drivers/gpu/vga/vga_switcheroo.c
@@ -27,6 +27,7 @@
#include <linux/pci.h>
#include <linux/console.h>
#include <linux/vga_switcheroo.h>
+#include <linux/pm_runtime.h>
#include <linux/vgaarb.h>
@@ -37,6 +38,7 @@ struct vga_switcheroo_client {
const struct vga_switcheroo_client_ops *ops;
int id;
bool active;
+ bool driver_power_control;
struct list_head list;
};
@@ -132,7 +134,7 @@ EXPORT_SYMBOL(vga_switcheroo_unregister_handler);
static int register_client(struct pci_dev *pdev,
const struct vga_switcheroo_client_ops *ops,
- int id, bool active)
+ int id, bool active, bool driver_power_control)
{
struct vga_switcheroo_client *client;
@@ -145,6 +147,7 @@ static int register_client(struct pci_dev *pdev,
client->ops = ops;
client->id = id;
client->active = active;
+ client->driver_power_control = driver_power_control;
mutex_lock(&vgasr_mutex);
list_add_tail(&client->list, &vgasr_priv.clients);
@@ -160,10 +163,11 @@ static int register_client(struct pci_dev *pdev,
}
int vga_switcheroo_register_client(struct pci_dev *pdev,
- const struct vga_switcheroo_client_ops *ops)
+ const struct vga_switcheroo_client_ops *ops,
+ bool driver_power_control)
{
return register_client(pdev, ops, -1,
- pdev == vga_default_device());
+ pdev == vga_default_device(), driver_power_control);
}
EXPORT_SYMBOL(vga_switcheroo_register_client);
@@ -171,7 +175,7 @@ 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);
+ return register_client(pdev, ops, id | ID_BIT_AUDIO, active, false);
}
EXPORT_SYMBOL(vga_switcheroo_register_audio_client);
@@ -258,10 +262,11 @@ static int vga_switcheroo_show(struct seq_file *m, void *v)
int i = 0;
mutex_lock(&vgasr_mutex);
list_for_each_entry(client, &vgasr_priv.clients, list) {
- seq_printf(m, "%d:%s%s:%c:%s:%s\n", i,
+ seq_printf(m, "%d:%s%s:%c:%s%s:%s\n", i,
client_id(client) == VGA_SWITCHEROO_DIS ? "DIS" : "IGD",
client_is_vga(client) ? "" : "-Audio",
client->active ? '+' : ' ',
+ client->driver_power_control ? "Dyn" : "",
client->pwr_state ? "Pwr" : "Off",
pci_name(client->pdev));
i++;
@@ -277,6 +282,8 @@ static int vga_switcheroo_debugfs_open(struct inode *inode, struct file *file)
static int vga_switchon(struct vga_switcheroo_client *client)
{
+ if (client->driver_power_control)
+ return 0;
if (vgasr_priv.handler->power_state)
vgasr_priv.handler->power_state(client->id, VGA_SWITCHEROO_ON);
/* call the driver callback to turn on device */
@@ -287,6 +294,8 @@ static int vga_switchon(struct vga_switcheroo_client *client)
static int vga_switchoff(struct vga_switcheroo_client *client)
{
+ if (client->driver_power_control)
+ return 0;
/* call the driver callback to turn off device */
client->ops->set_gpu_state(client->pdev, VGA_SWITCHEROO_OFF);
if (vgasr_priv.handler->power_state)
@@ -402,6 +411,8 @@ vga_switcheroo_debugfs_write(struct file *filp, const char __user *ubuf,
list_for_each_entry(client, &vgasr_priv.clients, list) {
if (client->active || client_is_audio(client))
continue;
+ if (client->driver_power_control)
+ continue;
set_audio_state(client->id, VGA_SWITCHEROO_OFF);
if (client->pwr_state == VGA_SWITCHEROO_ON)
vga_switchoff(client);
@@ -413,6 +424,8 @@ vga_switcheroo_debugfs_write(struct file *filp, const char __user *ubuf,
list_for_each_entry(client, &vgasr_priv.clients, list) {
if (client->active || client_is_audio(client))
continue;
+ if (client->driver_power_control)
+ continue;
if (client->pwr_state == VGA_SWITCHEROO_OFF)
vga_switchon(client);
set_audio_state(client->id, VGA_SWITCHEROO_ON);
@@ -565,3 +578,127 @@ err:
return err;
}
EXPORT_SYMBOL(vga_switcheroo_process_delayed_switch);
+
+static void vga_switcheroo_power_switch(struct pci_dev *pdev, enum vga_switcheroo_state state)
+{
+ struct vga_switcheroo_client *client;
+
+ if (!vgasr_priv.handler->power_state)
+ return;
+
+ client = find_client_from_pci(&vgasr_priv.clients, pdev);
+ if (!client)
+ return;
+
+ if (!client->driver_power_control)
+ return;
+
+ vgasr_priv.handler->power_state(client->id, state);
+}
+
+/* force a PCI device to a certain state - mainly to turn off audio clients */
+
+void vga_switcheroo_set_dynamic_switch(struct pci_dev *pdev, enum vga_switcheroo_state dynamic)
+{
+ struct vga_switcheroo_client *client;
+
+ client = find_client_from_pci(&vgasr_priv.clients, pdev);
+ if (!client)
+ return;
+
+ if (!client->driver_power_control)
+ return;
+
+ client->pwr_state = dynamic;
+ set_audio_state(client->id, dynamic);
+}
+EXPORT_SYMBOL(vga_switcheroo_set_dynamic_switch);
+
+/* switcheroo power domain */
+static int vga_switcheroo_runtime_suspend(struct device *dev)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ int ret;
+
+ ret = dev->bus->pm->runtime_suspend(dev);
+ if (ret)
+ return ret;
+
+ vga_switcheroo_power_switch(pdev, VGA_SWITCHEROO_OFF);
+ return 0;
+}
+
+static int vga_switcheroo_runtime_resume(struct device *dev)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ int ret;
+
+ vga_switcheroo_power_switch(pdev, VGA_SWITCHEROO_ON);
+ ret = dev->bus->pm->runtime_resume(dev);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+/* this version is for the case where the power switch is separate
+ to the device being powered down. */
+int vga_switcheroo_init_domain_pm_ops(struct device *dev, struct dev_pm_domain *domain)
+{
+ /* copy over all the bus versions */
+ if (dev->bus && dev->bus->pm) {
+ domain->ops = *dev->bus->pm;
+ domain->ops.runtime_suspend = vga_switcheroo_runtime_suspend;
+ domain->ops.runtime_resume = vga_switcheroo_runtime_resume;
+
+ dev->pm_domain = domain;
+ return 0;
+ }
+ dev->pm_domain = NULL;
+ return -EINVAL;
+}
+EXPORT_SYMBOL(vga_switcheroo_init_domain_pm_ops);
+
+static int vga_switcheroo_runtime_resume_hdmi_audio(struct device *dev)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ int ret;
+ struct vga_switcheroo_client *client, *found = NULL;
+
+ /* we need to check if we have to switch back on the video
+ device so the audio device can come back */
+ list_for_each_entry(client, &vgasr_priv.clients, list) {
+ if (PCI_SLOT(client->pdev->devfn) == PCI_SLOT(pdev->devfn) && client_is_vga(client)) {
+ found = client;
+ ret = pm_runtime_get_sync(&client->pdev->dev);
+ if (ret) {
+ if (ret != 1)
+ return ret;
+ }
+ break;
+ }
+ }
+ ret = dev->bus->pm->runtime_resume(dev);
+
+ /* put the reference for the gpu */
+ if (found) {
+ pm_runtime_mark_last_busy(&found->pdev->dev);
+ pm_runtime_put_autosuspend(&found->pdev->dev);
+ }
+ return ret;
+}
+
+int vga_switcheroo_init_domain_pm_optimus_hdmi_audio(struct device *dev, struct dev_pm_domain *domain)
+{
+ /* copy over all the bus versions */
+ if (dev->bus && dev->bus->pm) {
+ domain->ops = *dev->bus->pm;
+ domain->ops.runtime_resume = vga_switcheroo_runtime_resume_hdmi_audio;
+
+ dev->pm_domain = domain;
+ return 0;
+ }
+ dev->pm_domain = NULL;
+ return -EINVAL;
+}
+EXPORT_SYMBOL(vga_switcheroo_init_domain_pm_optimus_hdmi_audio);
diff --git a/include/linux/vga_switcheroo.h b/include/linux/vga_switcheroo.h
index ddb419c..502073a 100644
--- a/include/linux/vga_switcheroo.h
+++ b/include/linux/vga_switcheroo.h
@@ -45,7 +45,8 @@ struct vga_switcheroo_client_ops {
#if defined(CONFIG_VGA_SWITCHEROO)
void vga_switcheroo_unregister_client(struct pci_dev *dev);
int vga_switcheroo_register_client(struct pci_dev *dev,
- const struct vga_switcheroo_client_ops *ops);
+ const struct vga_switcheroo_client_ops *ops,
+ bool driver_power_control);
int vga_switcheroo_register_audio_client(struct pci_dev *pdev,
const struct vga_switcheroo_client_ops *ops,
int id, bool active);
@@ -60,11 +61,15 @@ int vga_switcheroo_process_delayed_switch(void);
int vga_switcheroo_get_client_state(struct pci_dev *dev);
+void vga_switcheroo_set_dynamic_switch(struct pci_dev *pdev, enum vga_switcheroo_state dynamic);
+
+int vga_switcheroo_init_domain_pm_ops(struct device *dev, struct dev_pm_domain *domain);
+int vga_switcheroo_init_domain_pm_optimus_hdmi_audio(struct device *dev, struct dev_pm_domain *domain);
#else
static inline void vga_switcheroo_unregister_client(struct pci_dev *dev) {}
static inline int vga_switcheroo_register_client(struct pci_dev *dev,
- const struct vga_switcheroo_client_ops *ops) { return 0; }
+ const struct vga_switcheroo_client_ops *ops, bool driver_power_control) { 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,
@@ -74,6 +79,10 @@ static inline void vga_switcheroo_unregister_handler(void) {}
static inline int vga_switcheroo_process_delayed_switch(void) { return 0; }
static inline int vga_switcheroo_get_client_state(struct pci_dev *dev) { return VGA_SWITCHEROO_ON; }
+static inline void vga_switcheroo_set_dynamic_switch(struct pci_dev *pdev, enum vga_switcheroo_state dynamic) {}
+
+static inline int vga_switcheroo_init_domain_pm_ops(struct device *dev, struct dev_pm_domain *domain) { return -EINVAL; }
+static inline int vga_switcheroo_init_domain_pm_optimus_hdmi_audio(struct device *dev, struct dev_pm_domain *domain) { return -EINVAL; }
#endif
#endif /* _LINUX_VGA_SWITCHEROO_H_ */
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