#include <linux/pci.h>
#include <linux/console.h>
#include <linux/vga_switcheroo.h>
+#include <linux/pm_runtime.h>
#include <linux/vgaarb.h>
const struct vga_switcheroo_client_ops *ops;
int id;
bool active;
+ bool driver_power_control;
struct list_head list;
};
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;
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);
}
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);
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);
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++;
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 */
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)
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);
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);
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);
projects / karo-tx-linux.git / blobdiff