diff options
Diffstat (limited to 'drivers/staging/comedi/comedidev.h')
| -rw-r--r-- | drivers/staging/comedi/comedidev.h | 509 |
1 files changed, 284 insertions, 225 deletions
diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h index 68aa9176d24..8f4e44bfbe0 100644 --- a/drivers/staging/comedi/comedidev.h +++ b/drivers/staging/comedi/comedidev.h @@ -14,58 +14,29 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ #ifndef _COMEDIDEV_H #define _COMEDIDEV_H -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/kdev_t.h> -#include <linux/slab.h> -#include <linux/delay.h> -#include <linux/errno.h> -#include <linux/spinlock.h> -#include <linux/mutex.h> -#include <linux/wait.h> -#include <linux/mm.h> -#include <linux/init.h> -#include <linux/vmalloc.h> #include <linux/dma-mapping.h> -#include <linux/uaccess.h> -#include <linux/io.h> -#include <linux/timer.h> +#include <linux/mutex.h> +#include <linux/spinlock_types.h> +#include <linux/rwsem.h> +#include <linux/kref.h> #include "comedi.h" -#define DPRINTK(format, args...) do { \ - if (comedi_debug) \ - printk(KERN_DEBUG "comedi: " format , ## args); \ -} while (0) - #define COMEDI_VERSION(a, b, c) (((a) << 16) + ((b) << 8) + (c)) #define COMEDI_VERSION_CODE COMEDI_VERSION(COMEDI_MAJORVERSION, \ COMEDI_MINORVERSION, COMEDI_MICROVERSION) #define COMEDI_RELEASE VERSION -#define PCI_VENDOR_ID_ADLINK 0x144a -#define PCI_VENDOR_ID_ICP 0x104c -#define PCI_VENDOR_ID_CONTEC 0x1221 - -#define COMEDI_NUM_MINORS 0x100 #define COMEDI_NUM_BOARD_MINORS 0x30 -#define COMEDI_FIRST_SUBDEVICE_MINOR COMEDI_NUM_BOARD_MINORS - -#define COMEDI_DEVICE_CREATE(cs, parent, devt, drvdata, device, fmt...) \ - device_create(cs, ((parent) ? (parent) : (device)), devt, drvdata, fmt) struct comedi_subdevice { struct comedi_device *device; + int index; int type; int n_chan; int subdev_flags; @@ -80,46 +51,41 @@ struct comedi_subdevice { unsigned runflags; spinlock_t spin_lock; - int io_bits; + unsigned int io_bits; unsigned int maxdata; /* if maxdata==0, use list */ const unsigned int *maxdata_list; /* list is channel specific */ - unsigned int flags; - const unsigned int *flaglist; - - unsigned int settling_time_0; - const struct comedi_lrange *range_table; const struct comedi_lrange *const *range_table_list; unsigned int *chanlist; /* driver-owned chanlist (not used) */ - int (*insn_read) (struct comedi_device *, struct comedi_subdevice *, + int (*insn_read)(struct comedi_device *, struct comedi_subdevice *, + struct comedi_insn *, unsigned int *); + int (*insn_write)(struct comedi_device *, struct comedi_subdevice *, struct comedi_insn *, unsigned int *); - int (*insn_write) (struct comedi_device *, struct comedi_subdevice *, + int (*insn_bits)(struct comedi_device *, struct comedi_subdevice *, + struct comedi_insn *, unsigned int *); + int (*insn_config)(struct comedi_device *, struct comedi_subdevice *, struct comedi_insn *, unsigned int *); - int (*insn_bits) (struct comedi_device *, struct comedi_subdevice *, - struct comedi_insn *, unsigned int *); - int (*insn_config) (struct comedi_device *, struct comedi_subdevice *, - struct comedi_insn *, unsigned int *); - - int (*do_cmd) (struct comedi_device *, struct comedi_subdevice *); - int (*do_cmdtest) (struct comedi_device *, struct comedi_subdevice *, - struct comedi_cmd *); - int (*poll) (struct comedi_device *, struct comedi_subdevice *); - int (*cancel) (struct comedi_device *, struct comedi_subdevice *); + + int (*do_cmd)(struct comedi_device *, struct comedi_subdevice *); + int (*do_cmdtest)(struct comedi_device *, struct comedi_subdevice *, + struct comedi_cmd *); + int (*poll)(struct comedi_device *, struct comedi_subdevice *); + int (*cancel)(struct comedi_device *, struct comedi_subdevice *); /* int (*do_lock)(struct comedi_device *, struct comedi_subdevice *); */ /* int (*do_unlock)(struct comedi_device *, \ struct comedi_subdevice *); */ /* called when the buffer changes */ - int (*buf_change) (struct comedi_device *dev, - struct comedi_subdevice *s, unsigned long new_size); + int (*buf_change)(struct comedi_device *dev, + struct comedi_subdevice *s, unsigned long new_size); - void (*munge) (struct comedi_device *dev, struct comedi_subdevice *s, - void *data, unsigned int num_bytes, - unsigned int start_chan_index); + void (*munge)(struct comedi_device *dev, struct comedi_subdevice *s, + void *data, unsigned int num_bytes, + unsigned int start_chan_index); enum dma_data_direction async_dma_dir; unsigned int state; @@ -133,18 +99,20 @@ struct comedi_buf_page { dma_addr_t dma_addr; }; -struct comedi_async { - struct comedi_subdevice *subdevice; +struct comedi_buf_map { + struct device *dma_hw_dev; + struct comedi_buf_page *page_list; + unsigned int n_pages; + enum dma_data_direction dma_dir; + struct kref refcount; +}; +struct comedi_async { void *prealloc_buf; /* pre-allocated buffer */ unsigned int prealloc_bufsz; /* buffer size, in bytes */ - /* virtual and dma address of each page */ - struct comedi_buf_page *buf_page_list; - unsigned n_buf_pages; /* num elements in buf_page_list */ + struct comedi_buf_map *buf_map; /* map of buffer pages */ unsigned int max_bufsize; /* maximum buffer size, bytes */ - /* current number of mmaps of prealloc_buf */ - unsigned int mmap_count; /* byte count for writer (write completed) */ unsigned int buf_write_count; @@ -174,13 +142,10 @@ struct comedi_async { wait_queue_head_t wait_head; - /* callback stuff */ unsigned int cb_mask; - int (*cb_func) (unsigned int flags, void *); - void *cb_arg; - int (*inttrig) (struct comedi_device *dev, struct comedi_subdevice *s, - unsigned int x); + int (*inttrig)(struct comedi_device *dev, struct comedi_subdevice *s, + unsigned int x); }; struct comedi_driver { @@ -188,8 +153,9 @@ struct comedi_driver { const char *driver_name; struct module *module; - int (*attach) (struct comedi_device *, struct comedi_devconfig *); - int (*detach) (struct comedi_device *); + int (*attach)(struct comedi_device *, struct comedi_devconfig *); + void (*detach)(struct comedi_device *); + int (*auto_attach)(struct comedi_device *, unsigned long); /* number of elements in board_name and board_id arrays */ unsigned int num_names; @@ -205,6 +171,7 @@ struct comedi_device { struct device *class_dev; int minor; + unsigned int detach_count; /* hw_dev is passed to dma_alloc_coherent when allocating async buffers * for subdevices that have async_dma_dir set to something other than * DMA_NONE */ @@ -212,16 +179,19 @@ struct comedi_device { const char *board_name; const void *board_ptr; - int attached; + bool attached:1; + bool ioenabled:1; spinlock_t spinlock; struct mutex mutex; - int in_request_module; + struct rw_semaphore attach_lock; + struct kref refcount; int n_subdevices; struct comedi_subdevice *subdevices; /* dumb */ unsigned long iobase; + unsigned long iolen; unsigned int irq; struct comedi_subdevice *read_subdev; @@ -229,21 +199,14 @@ struct comedi_device { struct fasync_struct *async_queue; - int (*open) (struct comedi_device *dev); - void (*close) (struct comedi_device *dev); + int (*open)(struct comedi_device *dev); + void (*close)(struct comedi_device *dev); }; -struct comedi_device_file_info { - struct comedi_device *device; - struct comedi_subdevice *read_subdevice; - struct comedi_subdevice *write_subdevice; -}; - -#ifdef CONFIG_COMEDI_DEBUG -extern int comedi_debug; -#else -static const int comedi_debug; -#endif +static inline const void *comedi_board(const struct comedi_device *dev) +{ + return dev->board_ptr; +} /* * function prototypes @@ -262,66 +225,31 @@ enum comedi_minor_bits { static const unsigned COMEDI_SUBDEVICE_MINOR_SHIFT = 4; static const unsigned COMEDI_SUBDEVICE_MINOR_OFFSET = 1; -struct comedi_device_file_info *comedi_get_device_file_info(unsigned minor); - -static inline struct comedi_subdevice *comedi_get_read_subdevice( - const struct comedi_device_file_info *info) -{ - if (info->read_subdevice) - return info->read_subdevice; - if (info->device == NULL) - return NULL; - return info->device->read_subdev; -} - -static inline struct comedi_subdevice *comedi_get_write_subdevice( - const struct comedi_device_file_info *info) -{ - if (info->write_subdevice) - return info->write_subdevice; - if (info->device == NULL) - return NULL; - return info->device->write_subdev; -} - -void comedi_device_detach(struct comedi_device *dev); -int comedi_device_attach(struct comedi_device *dev, - struct comedi_devconfig *it); -int comedi_driver_register(struct comedi_driver *); -int comedi_driver_unregister(struct comedi_driver *); +struct comedi_device *comedi_dev_get_from_minor(unsigned minor); +int comedi_dev_put(struct comedi_device *dev); void init_polling(void); void cleanup_polling(void); void start_polling(struct comedi_device *); void stop_polling(struct comedi_device *); -#ifdef CONFIG_PROC_FS -void comedi_proc_init(void); -void comedi_proc_cleanup(void); -#else -static inline void comedi_proc_init(void) -{ -} - -static inline void comedi_proc_cleanup(void) -{ -} -#endif - /* subdevice runflags */ enum subdevice_runflags { - SRF_USER = 0x00000001, SRF_RT = 0x00000002, /* indicates an COMEDI_CB_ERROR event has occurred since the last * command was started */ SRF_ERROR = 0x00000004, - SRF_RUNNING = 0x08000000 + SRF_RUNNING = 0x08000000, + SRF_FREE_SPRIV = 0x80000000, /* free s->private on detach */ }; +bool comedi_is_subdevice_running(struct comedi_subdevice *s); + +void *comedi_alloc_spriv(struct comedi_subdevice *s, size_t size); + int comedi_check_chanlist(struct comedi_subdevice *s, int n, unsigned int *chanlist); -unsigned comedi_get_subdevice_runflags(struct comedi_subdevice *s); /* range stuff */ @@ -337,6 +265,10 @@ extern const struct comedi_lrange range_bipolar5; extern const struct comedi_lrange range_bipolar2_5; extern const struct comedi_lrange range_unipolar10; extern const struct comedi_lrange range_unipolar5; +extern const struct comedi_lrange range_unipolar2_5; +extern const struct comedi_lrange range_0_20mA; +extern const struct comedi_lrange range_4_20mA; +extern const struct comedi_lrange range_0_32mA; extern const struct comedi_lrange range_unknown; #define range_digital range_unipolar5 @@ -352,34 +284,37 @@ struct comedi_lrange { struct comedi_krange range[GCC_ZERO_LENGTH_ARRAY]; }; -/* some silly little inline functions */ +static inline bool comedi_range_is_bipolar(struct comedi_subdevice *s, + unsigned int range) +{ + return s->range_table->range[range].min < 0; +} + +static inline bool comedi_range_is_unipolar(struct comedi_subdevice *s, + unsigned int range) +{ + return s->range_table->range[range].min >= 0; +} + +static inline bool comedi_chan_range_is_bipolar(struct comedi_subdevice *s, + unsigned int chan, + unsigned int range) +{ + return s->range_table_list[chan]->range[range].min < 0; +} -static inline int alloc_subdevices(struct comedi_device *dev, - unsigned int num_subdevices) +static inline bool comedi_chan_range_is_unipolar(struct comedi_subdevice *s, + unsigned int chan, + unsigned int range) { - unsigned i; - - dev->n_subdevices = num_subdevices; - dev->subdevices = - kcalloc(num_subdevices, sizeof(struct comedi_subdevice), - GFP_KERNEL); - if (!dev->subdevices) - return -ENOMEM; - for (i = 0; i < num_subdevices; ++i) { - dev->subdevices[i].device = dev; - dev->subdevices[i].async_dma_dir = DMA_NONE; - spin_lock_init(&dev->subdevices[i].spin_lock); - dev->subdevices[i].minor = -1; - } - return 0; + return s->range_table_list[chan]->range[range].min >= 0; } -static inline int alloc_private(struct comedi_device *dev, int size) +/* munge between offset binary and two's complement values */ +static inline unsigned int comedi_offset_munge(struct comedi_subdevice *s, + unsigned int val) { - dev->private = kzalloc(size, GFP_KERNEL); - if (!dev->private) - return -ENOMEM; - return 0; + return val ^ s->maxdata ^ (s->maxdata >> 1); } static inline unsigned int bytes_per_sample(const struct comedi_subdevice *subd) @@ -390,92 +325,216 @@ static inline unsigned int bytes_per_sample(const struct comedi_subdevice *subd) return sizeof(short); } -/* must be used in attach to set dev->hw_dev if you wish to dma directly -into comedi's buffer */ -static inline void comedi_set_hw_dev(struct comedi_device *dev, - struct device *hw_dev) -{ - if (dev->hw_dev) - put_device(dev->hw_dev); - - dev->hw_dev = hw_dev; - if (dev->hw_dev) { - dev->hw_dev = get_device(dev->hw_dev); - BUG_ON(dev->hw_dev == NULL); - } -} +/* + * Must set dev->hw_dev if you wish to dma directly into comedi's buffer. + * Also useful for retrieving a previously configured hardware device of + * known bus type. Set automatically for auto-configured devices. + * Automatically set to NULL when detaching hardware device. + */ +int comedi_set_hw_dev(struct comedi_device *dev, struct device *hw_dev); + +unsigned int comedi_buf_write_alloc(struct comedi_subdevice *s, unsigned int n); +unsigned int comedi_buf_write_free(struct comedi_subdevice *s, unsigned int n); + +unsigned int comedi_buf_read_n_available(struct comedi_subdevice *s); +unsigned int comedi_buf_read_alloc(struct comedi_subdevice *s, unsigned int n); +unsigned int comedi_buf_read_free(struct comedi_subdevice *s, unsigned int n); + +int comedi_buf_put(struct comedi_subdevice *s, unsigned short x); +int comedi_buf_get(struct comedi_subdevice *s, unsigned short *x); -int comedi_buf_put(struct comedi_async *async, short x); -int comedi_buf_get(struct comedi_async *async, short *x); - -unsigned int comedi_buf_write_n_available(struct comedi_async *async); -unsigned int comedi_buf_write_alloc(struct comedi_async *async, - unsigned int nbytes); -unsigned int comedi_buf_write_alloc_strict(struct comedi_async *async, - unsigned int nbytes); -unsigned comedi_buf_write_free(struct comedi_async *async, unsigned int nbytes); -unsigned comedi_buf_read_alloc(struct comedi_async *async, unsigned nbytes); -unsigned comedi_buf_read_free(struct comedi_async *async, unsigned int nbytes); -unsigned int comedi_buf_read_n_available(struct comedi_async *async); -void comedi_buf_memcpy_to(struct comedi_async *async, unsigned int offset, +void comedi_buf_memcpy_to(struct comedi_subdevice *s, unsigned int offset, const void *source, unsigned int num_bytes); -void comedi_buf_memcpy_from(struct comedi_async *async, unsigned int offset, +void comedi_buf_memcpy_from(struct comedi_subdevice *s, unsigned int offset, void *destination, unsigned int num_bytes); -static inline unsigned comedi_buf_write_n_allocated(struct comedi_async *async) + +/* drivers.c - general comedi driver functions */ + +#define COMEDI_TIMEOUT_MS 1000 + +int comedi_timeout(struct comedi_device *, struct comedi_subdevice *, + struct comedi_insn *, + int (*cb)(struct comedi_device *, struct comedi_subdevice *, + struct comedi_insn *, unsigned long context), + unsigned long context); + +int comedi_dio_insn_config(struct comedi_device *, struct comedi_subdevice *, + struct comedi_insn *, unsigned int *data, + unsigned int mask); +unsigned int comedi_dio_update_state(struct comedi_subdevice *, + unsigned int *data); + +void *comedi_alloc_devpriv(struct comedi_device *, size_t); +int comedi_alloc_subdevices(struct comedi_device *, int); + +int comedi_load_firmware(struct comedi_device *, struct device *, + const char *name, + int (*cb)(struct comedi_device *, + const u8 *data, size_t size, + unsigned long context), + unsigned long context); + +int __comedi_request_region(struct comedi_device *, + unsigned long start, unsigned long len); +int comedi_request_region(struct comedi_device *, + unsigned long start, unsigned long len); +void comedi_legacy_detach(struct comedi_device *); + +int comedi_auto_config(struct device *, struct comedi_driver *, + unsigned long context); +void comedi_auto_unconfig(struct device *); + +int comedi_driver_register(struct comedi_driver *); +void comedi_driver_unregister(struct comedi_driver *); + +/** + * module_comedi_driver() - Helper macro for registering a comedi driver + * @__comedi_driver: comedi_driver struct + * + * Helper macro for comedi drivers which do not do anything special in module + * init/exit. This eliminates a lot of boilerplate. Each module may only use + * this macro once, and calling it replaces module_init() and module_exit(). + */ +#define module_comedi_driver(__comedi_driver) \ + module_driver(__comedi_driver, comedi_driver_register, \ + comedi_driver_unregister) + +#ifdef CONFIG_COMEDI_PCI_DRIVERS + +/* comedi_pci.c - comedi PCI driver specific functions */ + +/* + * PCI Vendor IDs not in <linux/pci_ids.h> + */ +#define PCI_VENDOR_ID_KOLTER 0x1001 +#define PCI_VENDOR_ID_ICP 0x104c +#define PCI_VENDOR_ID_DT 0x1116 +#define PCI_VENDOR_ID_IOTECH 0x1616 +#define PCI_VENDOR_ID_CONTEC 0x1221 +#define PCI_VENDOR_ID_RTD 0x1435 +#define PCI_VENDOR_ID_HUMUSOFT 0x186c + +struct pci_dev; +struct pci_driver; + +struct pci_dev *comedi_to_pci_dev(struct comedi_device *); + +int comedi_pci_enable(struct comedi_device *); +void comedi_pci_disable(struct comedi_device *); + +int comedi_pci_auto_config(struct pci_dev *, struct comedi_driver *, + unsigned long context); +void comedi_pci_auto_unconfig(struct pci_dev *); + +int comedi_pci_driver_register(struct comedi_driver *, struct pci_driver *); +void comedi_pci_driver_unregister(struct comedi_driver *, struct pci_driver *); + +/** + * module_comedi_pci_driver() - Helper macro for registering a comedi PCI driver + * @__comedi_driver: comedi_driver struct + * @__pci_driver: pci_driver struct + * + * Helper macro for comedi PCI drivers which do not do anything special + * in module init/exit. This eliminates a lot of boilerplate. Each + * module may only use this macro once, and calling it replaces + * module_init() and module_exit() + */ +#define module_comedi_pci_driver(__comedi_driver, __pci_driver) \ + module_driver(__comedi_driver, comedi_pci_driver_register, \ + comedi_pci_driver_unregister, &(__pci_driver)) + +#else + +/* + * Some of the comedi mixed ISA/PCI drivers call the PCI specific + * functions. Provide some dummy functions if CONFIG_COMEDI_PCI_DRIVERS + * is not enabled. + */ + +static inline struct pci_dev *comedi_to_pci_dev(struct comedi_device *dev) { - return async->buf_write_alloc_count - async->buf_write_count; + return NULL; } -static inline unsigned comedi_buf_read_n_allocated(struct comedi_async *async) +static inline int comedi_pci_enable(struct comedi_device *dev) { - return async->buf_read_alloc_count - async->buf_read_count; + return -ENOSYS; } -static inline void *comedi_aux_data(int options[], int n) +static inline void comedi_pci_disable(struct comedi_device *dev) { - unsigned long address; - unsigned long addressLow; - int bit_shift; - if (sizeof(int) >= sizeof(void *)) - address = options[COMEDI_DEVCONF_AUX_DATA_LO]; - else { - address = options[COMEDI_DEVCONF_AUX_DATA_HI]; - bit_shift = sizeof(int) * 8; - address <<= bit_shift; - addressLow = options[COMEDI_DEVCONF_AUX_DATA_LO]; - addressLow &= (1UL << bit_shift) - 1; - address |= addressLow; - } - if (n >= 1) - address += options[COMEDI_DEVCONF_AUX_DATA0_LENGTH]; - if (n >= 2) - address += options[COMEDI_DEVCONF_AUX_DATA1_LENGTH]; - if (n >= 3) - address += options[COMEDI_DEVCONF_AUX_DATA2_LENGTH]; - BUG_ON(n > 3); - return (void *)address; } -int comedi_alloc_subdevice_minor(struct comedi_device *dev, - struct comedi_subdevice *s); -void comedi_free_subdevice_minor(struct comedi_subdevice *s); -int comedi_pci_auto_config(struct pci_dev *pcidev, const char *board_name); -void comedi_pci_auto_unconfig(struct pci_dev *pcidev); -struct usb_device; /* forward declaration */ -int comedi_usb_auto_config(struct usb_device *usbdev, const char *board_name); -void comedi_usb_auto_unconfig(struct usb_device *usbdev); +#endif /* CONFIG_COMEDI_PCI_DRIVERS */ -#ifdef CONFIG_COMEDI_PCI_DRIVERS -#define CONFIG_COMEDI_PCI -#endif -#ifdef CONFIG_COMEDI_PCI_DRIVERS_MODULE -#define CONFIG_COMEDI_PCI -#endif #ifdef CONFIG_COMEDI_PCMCIA_DRIVERS -#define CONFIG_COMEDI_PCMCIA -#endif -#ifdef CONFIG_COMEDI_PCMCIA_DRIVERS_MODULE -#define CONFIG_COMEDI_PCMCIA -#endif + +/* comedi_pcmcia.c - comedi PCMCIA driver specific functions */ + +struct pcmcia_driver; +struct pcmcia_device; + +struct pcmcia_device *comedi_to_pcmcia_dev(struct comedi_device *); + +int comedi_pcmcia_enable(struct comedi_device *, + int (*conf_check)(struct pcmcia_device *, void *)); +void comedi_pcmcia_disable(struct comedi_device *); + +int comedi_pcmcia_auto_config(struct pcmcia_device *, struct comedi_driver *); +void comedi_pcmcia_auto_unconfig(struct pcmcia_device *); + +int comedi_pcmcia_driver_register(struct comedi_driver *, + struct pcmcia_driver *); +void comedi_pcmcia_driver_unregister(struct comedi_driver *, + struct pcmcia_driver *); + +/** + * module_comedi_pcmcia_driver() - Helper macro for registering a comedi PCMCIA driver + * @__comedi_driver: comedi_driver struct + * @__pcmcia_driver: pcmcia_driver struct + * + * Helper macro for comedi PCMCIA drivers which do not do anything special + * in module init/exit. This eliminates a lot of boilerplate. Each + * module may only use this macro once, and calling it replaces + * module_init() and module_exit() + */ +#define module_comedi_pcmcia_driver(__comedi_driver, __pcmcia_driver) \ + module_driver(__comedi_driver, comedi_pcmcia_driver_register, \ + comedi_pcmcia_driver_unregister, &(__pcmcia_driver)) + +#endif /* CONFIG_COMEDI_PCMCIA_DRIVERS */ + +#ifdef CONFIG_COMEDI_USB_DRIVERS + +/* comedi_usb.c - comedi USB driver specific functions */ + +struct usb_driver; +struct usb_interface; + +struct usb_interface *comedi_to_usb_interface(struct comedi_device *); +struct usb_device *comedi_to_usb_dev(struct comedi_device *); + +int comedi_usb_auto_config(struct usb_interface *, struct comedi_driver *, + unsigned long context); +void comedi_usb_auto_unconfig(struct usb_interface *); + +int comedi_usb_driver_register(struct comedi_driver *, struct usb_driver *); +void comedi_usb_driver_unregister(struct comedi_driver *, struct usb_driver *); + +/** + * module_comedi_usb_driver() - Helper macro for registering a comedi USB driver + * @__comedi_driver: comedi_driver struct + * @__usb_driver: usb_driver struct + * + * Helper macro for comedi USB drivers which do not do anything special + * in module init/exit. This eliminates a lot of boilerplate. Each + * module may only use this macro once, and calling it replaces + * module_init() and module_exit() + */ +#define module_comedi_usb_driver(__comedi_driver, __usb_driver) \ + module_driver(__comedi_driver, comedi_usb_driver_register, \ + comedi_usb_driver_unregister, &(__usb_driver)) + +#endif /* CONFIG_COMEDI_USB_DRIVERS */ #endif /* _COMEDIDEV_H */ |