0d69704ae3
For optimus and powerxpress muxless we really want the GPU driver deciding when to power up/down the GPU, not userspace. This adds the ability for a driver to dynamically power up/down the GPU and remove the switcheroo from controlling it, the switcheroo reports the dynamic state to userspace also. It also adds 2 power domains, one for machine where the power switch is controlled outside the GPU D3 state, so the powerdown ordering is done correctly, and the second for the hdmi audio device to make sure it can resume for PCI config space accesses. v1.1: fix build with switcheroo off v2: add power domain support for radeon and v1 nvidia dsms v2.1: fix typo in off case v3: add audio power domain for hdmi audio + misc audio fixes v4: use PCI_SLOT macro, drop power reference on hdmi audio resume failure also. Signed-off-by: Dave Airlie <airlied@redhat.com>
88 lines
3.2 KiB
C
88 lines
3.2 KiB
C
/*
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* Copyright (c) 2010 Red Hat Inc.
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* Author : Dave Airlie <airlied@redhat.com>
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*
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* Licensed under GPLv2
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*
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* vga_switcheroo.h - Support for laptop with dual GPU using one set of outputs
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*/
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#ifndef _LINUX_VGA_SWITCHEROO_H_
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#define _LINUX_VGA_SWITCHEROO_H_
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#include <linux/fb.h>
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struct pci_dev;
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enum vga_switcheroo_state {
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VGA_SWITCHEROO_OFF,
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VGA_SWITCHEROO_ON,
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/* below are referred only from vga_switcheroo_get_client_state() */
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VGA_SWITCHEROO_INIT,
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VGA_SWITCHEROO_NOT_FOUND,
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};
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enum vga_switcheroo_client_id {
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VGA_SWITCHEROO_IGD,
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VGA_SWITCHEROO_DIS,
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VGA_SWITCHEROO_MAX_CLIENTS,
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};
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struct vga_switcheroo_handler {
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int (*switchto)(enum vga_switcheroo_client_id id);
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int (*power_state)(enum vga_switcheroo_client_id id,
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enum vga_switcheroo_state state);
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int (*init)(void);
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int (*get_client_id)(struct pci_dev *pdev);
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};
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struct vga_switcheroo_client_ops {
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void (*set_gpu_state)(struct pci_dev *dev, enum vga_switcheroo_state);
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void (*reprobe)(struct pci_dev *dev);
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bool (*can_switch)(struct pci_dev *dev);
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};
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#if defined(CONFIG_VGA_SWITCHEROO)
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void vga_switcheroo_unregister_client(struct pci_dev *dev);
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int vga_switcheroo_register_client(struct pci_dev *dev,
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const struct vga_switcheroo_client_ops *ops,
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bool driver_power_control);
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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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void vga_switcheroo_client_fb_set(struct pci_dev *dev,
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struct fb_info *info);
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int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler);
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void vga_switcheroo_unregister_handler(void);
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int vga_switcheroo_process_delayed_switch(void);
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int vga_switcheroo_get_client_state(struct pci_dev *dev);
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void vga_switcheroo_set_dynamic_switch(struct pci_dev *pdev, enum vga_switcheroo_state dynamic);
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int vga_switcheroo_init_domain_pm_ops(struct device *dev, struct dev_pm_domain *domain);
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int vga_switcheroo_init_domain_pm_optimus_hdmi_audio(struct device *dev, struct dev_pm_domain *domain);
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#else
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static inline void vga_switcheroo_unregister_client(struct pci_dev *dev) {}
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static inline int vga_switcheroo_register_client(struct pci_dev *dev,
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const struct vga_switcheroo_client_ops *ops, bool driver_power_control) { return 0; }
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static inline void vga_switcheroo_client_fb_set(struct pci_dev *dev, struct fb_info *info) {}
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static inline int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler) { return 0; }
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static inline 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) { return 0; }
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static inline void vga_switcheroo_unregister_handler(void) {}
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static inline int vga_switcheroo_process_delayed_switch(void) { return 0; }
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static inline int vga_switcheroo_get_client_state(struct pci_dev *dev) { return VGA_SWITCHEROO_ON; }
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static inline void vga_switcheroo_set_dynamic_switch(struct pci_dev *pdev, enum vga_switcheroo_state dynamic) {}
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static inline int vga_switcheroo_init_domain_pm_ops(struct device *dev, struct dev_pm_domain *domain) { return -EINVAL; }
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static inline int vga_switcheroo_init_domain_pm_optimus_hdmi_audio(struct device *dev, struct dev_pm_domain *domain) { return -EINVAL; }
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#endif
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#endif /* _LINUX_VGA_SWITCHEROO_H_ */
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