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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126/* SPDX-License-Identifier: MIT */
#ifndef DRM_MODULE_H#define DRM_MODULE_H
#include <linux/pci.h>#include <linux/platform_device.h>
#include <drm/drm_drv.h>
/** * DOC: overview * * This library provides helpers registering DRM drivers during module * initialization and shutdown. The provided helpers act like bus-specific * module helpers, such as module_pci_driver(), but respect additional * parameters that control DRM driver registration. * * Below is an example of initializing a DRM driver for a device on the * PCI bus. * * .. code-block:: c * * struct pci_driver my_pci_drv = { * }; * * drm_module_pci_driver(my_pci_drv); * * The generated code will test if DRM drivers are enabled and register * the PCI driver my_pci_drv. For more complex module initialization, you * can still use module_init() and module_exit() in your driver. */
/* * PCI drivers */
static inline int __init drm_pci_register_driver(struct pci_driver *pci_drv){ if (drm_firmware_drivers_only()) return -ENODEV;
return pci_register_driver(pci_drv);}
/** * drm_module_pci_driver - Register a DRM driver for PCI-based devices * @__pci_drv: the PCI driver structure * * Registers a DRM driver for devices on the PCI bus. The helper * macro behaves like module_pci_driver() but tests the state of * drm_firmware_drivers_only(). For more complex module initialization, * use module_init() and module_exit() directly. * * Each module may only use this macro once. Calling it replaces * module_init() and module_exit(). */#define drm_module_pci_driver(__pci_drv) \ module_driver(__pci_drv, drm_pci_register_driver, pci_unregister_driver)
static inline int __initdrm_pci_register_driver_if_modeset(struct pci_driver *pci_drv, int modeset){ if (drm_firmware_drivers_only() && modeset == -1) return -ENODEV; if (modeset == 0) return -ENODEV;
return pci_register_driver(pci_drv);}
static inline void __exitdrm_pci_unregister_driver_if_modeset(struct pci_driver *pci_drv, int modeset){ pci_unregister_driver(pci_drv);}
/** * drm_module_pci_driver_if_modeset - Register a DRM driver for PCI-based devices * @__pci_drv: the PCI driver structure * @__modeset: an additional parameter that disables the driver * * This macro is deprecated and only provided for existing drivers. For * new drivers, use drm_module_pci_driver(). * * Registers a DRM driver for devices on the PCI bus. The helper macro * behaves like drm_module_pci_driver() with an additional driver-specific * flag. If __modeset is 0, the driver has been disabled, if __modeset is * -1 the driver state depends on the global DRM state. For all other * values, the PCI driver has been enabled. The default should be -1. */#define drm_module_pci_driver_if_modeset(__pci_drv, __modeset) \ module_driver(__pci_drv, drm_pci_register_driver_if_modeset, \ drm_pci_unregister_driver_if_modeset, __modeset)
/* * Platform drivers */
static inline int __initdrm_platform_driver_register(struct platform_driver *platform_drv){ if (drm_firmware_drivers_only()) return -ENODEV;
return platform_driver_register(platform_drv);}
/** * drm_module_platform_driver - Register a DRM driver for platform devices * @__platform_drv: the platform driver structure * * Registers a DRM driver for devices on the platform bus. The helper * macro behaves like module_platform_driver() but tests the state of * drm_firmware_drivers_only(). For more complex module initialization, * use module_init() and module_exit() directly. * * Each module may only use this macro once. Calling it replaces * module_init() and module_exit(). */#define drm_module_platform_driver(__platform_drv) \ module_driver(__platform_drv, drm_platform_driver_register, \ platform_driver_unregister)
#endif