Changelogs: 1. A bugfix for clear usage process. This driver requires: 1. [PATCH] usb: HID Simple Driver Interface 0.3.1 (Kconfig and Makefile), this patch can be used without any change. PS: Who is the maintainer of the input subsystem today? Should I forward this mail to him/her? It can be applied on 2.6.18 at least. Signed-off-by: Liyu <[email protected]> diff -Naurp linux-2.6.18/drivers/usb/input/hid-core.c linux-2.6.18/drivers/usb/input.new/hid-core.c --- linux-2.6.18/drivers/usb/input/hid-core.c 2006-09-20 11:42:06.000000000 +0800 +++ linux-2.6.18/drivers/usb/input.new/hid-core.c 2006-09-28 09:30:47.000000000 +0800 @@ -26,6 +26,7 @@ #include <asm/byteorder.h> #include <linux/input.h> #include <linux/wait.h> +#include <linux/mutex.h> #undef DEBUG #undef DEBUG_DATA @@ -33,6 +34,7 @@ #include <linux/usb.h> #include "hid.h" +#include "hid-simple.h" #include <linux/hiddev.h> /* @@ -46,6 +48,15 @@ static char *hid_types[] = {"Device", "Pointer", "Mouse", "Device", "Joystick", "Gamepad", "Keyboard", "Keypad", "Multi-Axis Controller"}; + +/* + * The global data structure for simple device driver interface. + */ +static DEFINE_MUTEX(matched_devices_lock); +static DEFINE_MUTEX(simple_drivers_lock); +static struct list_head matched_devices_list; +static struct list_head simple_drivers_list; + /* * Module parameters. */ @@ -785,8 +796,18 @@ static __inline__ int search(__s32 *arra static void hid_process_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value, int interrupt, struct pt_regs *regs) { hid_dump_input(usage, value); - if (hid->claimed & HID_CLAIMED_INPUT) + if (hid->claimed & HID_CLAIMED_INPUT) { + /* event filter here */ + if (hid->simple) { + if (hid->simple->pre_event && + !hid->simple->pre_event(hid, field, usage, + value, regs)) + return; + } hidinput_hid_event(hid, field, usage, value, regs); + if (hid->simple && hid->simple->post_event) + hid->simple->post_event(hid, field, usage, value, regs); + } if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt) hiddev_hid_event(hid, field, usage, value, regs); } @@ -832,7 +853,6 @@ static void hid_input_field(struct hid_d && field->usage[field->value[n] - min].hid && search(value, field->value[n], count)) hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt, regs); - if (value[n] >= min && value[n] <= max && field->usage[value[n] - min].hid && search(field->value, value[n], count)) @@ -2031,8 +2051,33 @@ static void hid_disconnect(struct usb_in del_timer_sync(&hid->io_retry); flush_scheduled_work(); - if (hid->claimed & HID_CLAIMED_INPUT) + if (hid->claimed & HID_CLAIMED_INPUT) { + struct list_head *node; + struct matched_device *matched; + + matched = NULL; + mutex_lock(&matched_devices_lock); + list_for_each(node, &matched_devices_list) { + matched = list_entry(node, struct matched_device, node); + if (matched->intf == intf) { + list_del(&matched->node); + break; + } + matched = NULL; + } + mutex_unlock(&matched_devices_lock); + /* disconnect simple device driver if need */ + if (matched && hid->simple) { + hidinput_simple_driver_disconnect(hid); + module_put(hid->simple->owner); + hidinput_simple_driver_pop(hid, matched); + } + if (matched) { + matched->intf = NULL; + kfree(matched); + } hidinput_disconnect(hid); + } if (hid->claimed & HID_CLAIMED_HIDDEV) hiddev_disconnect(hid); @@ -2045,6 +2090,141 @@ static void hid_disconnect(struct usb_in hid_free_device(hid); } +#ifdef CONFIG_HID_SIMPLE +static int hidinput_simple_driver_bind_one(struct hidinput_simple_driver *simple, + struct hid_device *hid, + struct matched_device *matched) +{ + int ret; + + if (!try_module_get(simple->owner)) + return -ENODEV; + ret = hidinput_simple_driver_connect(simple, hid); + if (ret) + goto exit_err; + ret = hidinput_simple_driver_push(hid, simple, matched); + if (ret) + goto exit_err; + hidinput_simple_driver_setup_usage(hid); + printk(KERN_INFO "The Simple HID driver \'%s\' attach on \'%s\'\n", + simple->name, hid->name); + goto exit; +exit_err: + module_put(simple->owner); +exit: + return ret; +} + +static void hidinput_simple_driver_bind_foreach_simple( + struct matched_device *matched) +{ + struct hidinput_simple_driver *simple; + struct list_head *node; + struct hid_device *hid; + + if (!matched->intf) + return; + hid = usb_get_intfdata (matched->intf); + if (!hid || hid->simple) + return; + + mutex_lock(&simple_drivers_lock); + list_for_each(node, &simple_drivers_list) { + simple = list_entry(node, struct hidinput_simple_driver, node); + if (test_bit(HIDINPUT_SIMPLE_CONNECTED, &simple->flags)) + continue; + if (usb_match_id(matched->intf, simple->id_table)) { + hidinput_simple_driver_bind_one(simple, hid, matched); + break; + } + } + mutex_unlock(&simple_drivers_lock); +} + +static void hidinput_simple_driver_bind_foreach(void) +{ + struct hidinput_simple_driver *simple; + struct matched_device *matched=NULL; + struct list_head *matched_node = NULL; + struct list_head *simple_node = NULL; + struct hid_device *hid=NULL; + + mutex_lock(&matched_devices_lock); + list_for_each(matched_node, &matched_devices_list) { + matched = list_entry(matched_node, struct matched_device, node); + hid = usb_get_intfdata(matched->intf); + if (hid->simple) + continue; + mutex_lock(&simple_drivers_lock); + list_for_each(simple_node, &simple_drivers_list) { + simple = list_entry(simple_node, struct hidinput_simple_driver, node); + + if (test_bit(HIDINPUT_SIMPLE_CONNECTED, &simple->flags)) + continue; + if (!usb_match_id(matched->intf, simple->id_table)) + continue; + hidinput_simple_driver_bind_one(simple, hid, matched); + } + mutex_unlock(&simple_drivers_lock); + } + mutex_unlock(&matched_devices_lock); +} + +static void hidinput_simple_driver_bind_foreach_matched( + struct hidinput_simple_driver *simple) +{ + struct list_head *node=NULL; + struct matched_device *matched; + struct hid_device *hid=NULL; + + if (!simple || test_bit(HIDINPUT_SIMPLE_CONNECTED, &simple->flags)) + return; + + mutex_lock(&matched_devices_lock); + list_for_each(node, &matched_devices_list) { + matched = list_entry(node, struct matched_device, node); + hid = usb_get_intfdata (matched->intf); + if (hid->simple) + continue; + if (!usb_match_id(matched->intf, simple->id_table)) + continue; + hidinput_simple_driver_bind_one(simple, hid, matched); + } + mutex_unlock(&matched_devices_lock); +} + +int hidinput_register_simple_driver(struct hidinput_simple_driver *simple) +{ + if (!simple || !simple->name) + return -EINVAL; + + printk(KERN_INFO "The Simple HID driver \'%s\' register.\n", + simple->name); + hidinput_simple_driver_init(simple); + hidinput_simple_driver_bind_foreach_matched(simple); + + mutex_lock(&simple_drivers_lock); + list_add(&simple->node, &simple_drivers_list); + mutex_unlock(&simple_drivers_lock); + + return 0; +} +EXPORT_SYMBOL_GPL(hidinput_register_simple_driver); + +void hidinput_unregister_simple_driver(struct hidinput_simple_driver *simple) +{ + printk(KERN_INFO "The Simple HID driver \'%s\' unregister.\n", + simple->name); + hidinput_simple_driver_clear(simple); + mutex_lock(&simple_drivers_lock); + list_del(&simple->node); + mutex_unlock(&simple_drivers_lock); + /* to active simple device driver that it is waiting */ + hidinput_simple_driver_bind_foreach(); +} +EXPORT_SYMBOL_GPL(hidinput_unregister_simple_driver); +#endif + static int hid_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct hid_device *hid; @@ -2061,15 +2241,25 @@ static int hid_probe(struct usb_interfac hid_init_reports(hid); hid_dump_device(hid); - if (!hidinput_connect(hid)) + usb_set_intfdata(intf, hid); + + if (!hidinput_connect(hid)) { + struct matched_device *matched; + matched = kmalloc(sizeof(struct matched_device), GFP_KERNEL); + if (matched) { + matched->intf = intf; + mutex_lock(&matched_devices_lock); + list_add(&matched->node, &matched_devices_list); + mutex_unlock(&matched_devices_lock); + hidinput_simple_driver_bind_foreach_simple(matched); + } hid->claimed |= HID_CLAIMED_INPUT; + } if (!hiddev_connect(hid)) hid->claimed |= HID_CLAIMED_HIDDEV; - usb_set_intfdata(intf, hid); - if (!hid->claimed) { - printk ("HID device not claimed by input or hiddev\n"); + printk (KERN_INFO "HID device not claimed by input or hiddev\n"); hid_disconnect(intf); return -ENODEV; } @@ -2168,6 +2358,8 @@ static int __init hid_init(void) retval = hiddev_init(); if (retval) goto hiddev_init_fail; + INIT_LIST_HEAD(&matched_devices_list); + INIT_LIST_HEAD(&simple_drivers_list); retval = usb_register(&hid_driver); if (retval) goto usb_register_fail; @@ -2182,7 +2374,15 @@ hiddev_init_fail: static void __exit hid_exit(void) { + struct list_head *node, *tmp; + struct matched_device *matched; + usb_deregister(&hid_driver); + list_for_each_safe(node, tmp, &matched_devices_list) { + matched = list_entry(node, struct matched_device, node); + list_del(&matched->node); + kfree(matched); + } hiddev_exit(); } diff -Naurp linux-2.6.18/drivers/usb/input/hid.h linux-2.6.18/drivers/usb/input.new/hid.h --- linux-2.6.18/drivers/usb/input/hid.h 2006-09-20 11:42:06.000000000 +0800 +++ linux-2.6.18/drivers/usb/input.new/hid.h 2006-09-28 09:28:15.000000000 +0800 @@ -389,8 +389,11 @@ struct hid_input { struct list_head list; struct hid_report *report; struct input_dev *input; + void *private; }; +struct hidinput_simple_driver; + struct hid_device { /* device report descriptor */ __u8 *rdesc; unsigned rsize; @@ -454,6 +457,8 @@ struct hid_device { /* device repo int (*ff_event)(struct hid_device *hid, struct input_dev *input, unsigned int type, unsigned int code, int value); + struct hidinput_simple_driver *simple; + #ifdef CONFIG_USB_HIDINPUT_POWERBOOK unsigned long pb_pressed_fn[NBITS(KEY_MAX)]; unsigned long pb_pressed_numlock[NBITS(KEY_MAX)]; diff -Naurp linux-2.6.18/drivers/usb/input/hid-input.c linux-2.6.18/drivers/usb/input.new/hid-input.c --- linux-2.6.18/drivers/usb/input/hid-input.c 2006-09-20 11:42:06.000000000 +0800 +++ linux-2.6.18/drivers/usb/input.new/hid-input.c 2006-09-28 09:28:15.000000000 +0800 @@ -34,7 +34,7 @@ #undef DEBUG #include "hid.h" - +#include "hid-simple.h" #define unk KEY_UNKNOWN static const unsigned char hid_keyboard[256] = { @@ -61,6 +61,8 @@ static const struct { __s32 y; } hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}}; +typedef void (*do_usage_t)(struct hid_field *, struct hid_usage *); + #define map_abs(c) do { usage->code = c; usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX; } while (0) #define map_rel(c) do { usage->code = c; usage->type = EV_REL; bit = input->relbit; max = REL_MAX; } while (0) #define map_key(c) do { usage->code = c; usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; } while (0) @@ -747,8 +749,13 @@ static int hidinput_input_event(struct i struct hid_field *field; int offset; - if (type == EV_FF) + if (type == EV_FF) { + if (hid->simple && hid->simple->ff_event) { + if (!hid->simple->ff_event(dev, type, code, value)); + return 0; + } return hid_ff_event(hid, dev, type, code, value); + } if (type != EV_LED) return -1; @@ -767,12 +774,22 @@ static int hidinput_input_event(struct i static int hidinput_open(struct input_dev *dev) { struct hid_device *hid = dev->private; - return hid_open(hid); + int ret = 0; + + if (hid->simple && hid->simple->open) + ret = hid->simple->open(dev); + if (!ret) + return hid_open(hid); + else + return ret; } static void hidinput_close(struct input_dev *dev) { struct hid_device *hid = dev->private; + + if (hid->simple && hid->simple->close) + hid->simple->close(dev); hid_close(hid); } @@ -821,7 +838,7 @@ int hidinput_connect(struct hid_device * input_dev->event = hidinput_input_event; input_dev->open = hidinput_open; input_dev->close = hidinput_close; - + hidinput_simple_driver_ff_init(input_dev); input_dev->name = hid->name; input_dev->phys = hid->phys; input_dev->uniq = hid->uniq; diff -Naurp linux-2.6.18/drivers/usb/input/hid-simple.c linux-2.6.18/drivers/usb/input.new/hid-simple.c --- linux-2.6.18/drivers/usb/input/hid-simple.c 1970-01-01 08:00:00.000000000 +0800 +++ linux-2.6.18/drivers/usb/input.new/hid-simple.c 2006-09-29 09:22:38.000000000 +0800 @@ -0,0 +1,315 @@ +/* + * HID Simple Driver Interface v0.3.2 + * + * Copyright (c) 2006 Li Yu <[email protected]> + */ + +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Should you need to contact me, the author, you can do so either by + * e-mail - mail your message to <[email protected]>, or by paper mail: + * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic + */ + +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/kernel.h> +#include <linux/input.h> + +#include "hid.h" +#include "hid-simple.h" + +typedef void (*do_usage_t)(struct hid_field *, struct hid_usage *); + +int hidinput_simple_driver_init(struct hidinput_simple_driver *drv) +{ + if (unlikely(!drv)) + return -EINVAL; + INIT_LIST_HEAD(&drv->node); + INIT_LIST_HEAD(&drv->raw_devices); + drv->flags = 0; + return 0; +} + +static void inline hidinput_simple_configure_one_usage(int op, + struct input_dev *input, + struct hid_usage *usage, + struct usage_block *usage_block) +{ + unsigned long *bits; + int flag; + struct hid_device *hid; + + hid = input->private; + switch (usage_block->event) { + case EV_KEY: + flag = HIDINPUT_SIMPLE_KEYBIT; + bits = input->keybit; + break; + case EV_REL: + flag = HIDINPUT_SIMPLE_RELBIT; + bits = input->relbit; + break; + case EV_ABS: + flag = HIDINPUT_SIMPLE_ABSBIT; + bits = input->relbit; + break; + case EV_MSC: + flag = HIDINPUT_SIMPLE_MSCBIT; + bits = input->absbit; + break; + case EV_SW: + flag = HIDINPUT_SIMPLE_SWBIT; + bits = input->swbit; + break; + case EV_LED: + flag = HIDINPUT_SIMPLE_LEDBIT; + bits = input->ledbit; + break; + case EV_SND: + flag = HIDINPUT_SIMPLE_SNDBIT; + bits = input->sndbit; + break; + case EV_FF: + flag = HIDINPUT_SIMPLE_FFBIT; + bits = input->ffbit; + break; + case EV_FF_STATUS: + flag = HIDINPUT_SIMPLE_FFSTSBIT; + bits = NULL; + break; + default: + return; + } + + if (__OP_SET_BIT == op) { + usage->code = usage_block->code; + usage->type = usage_block->event; + if (bits) + set_bit(usage_block->code, bits); + /* if this event bit is set by us first, remember it */ + if (!test_and_set_bit(usage_block->event, input->evbit)) + set_bit(flag, &hid->simple->flags); + } + else if (__OP_CLR_BIT == op) { + usage->code = 0; + usage->type = 0; + if (bits) + clear_bit(usage_block->code, bits); + /* clear event bit, only if it's set by us. */ + if (test_and_clear_bit(flag, &hid->simple->flags)) + clear_bit(usage_block->event, input->evbit); + } +} + +static do_usage_t hidinput_simple_driver_configure_usage_prep( + struct hid_device *hid, + int *op) +{ + do_usage_t do_usage; + + if (!hid->simple) + return NULL; + + if (test_bit(HIDINPUT_SIMPLE_SETUP_USAGE, &hid->simple->flags)) { + do_usage = hid->simple->setup_usage; + *op = __OP_SET_BIT; + } + else { + do_usage = hid->simple->clear_usage; + *op = __OP_CLR_BIT; + } + return do_usage; +} + +static void __hidinput_simple_driver_configure_usage(int op, + struct hid_field *field, + struct hid_usage *hid_usage) +{ + struct input_dev *input = field->hidinput->input; + struct hid_device *hid = input->private; + struct usage_block *usage_block; + struct usage_page_block *page_block; + int page; + int usage; + + page = (hid_usage->hid & HID_USAGE_PAGE); + usage = (hid_usage->hid & HID_USAGE); + page_block = hid->simple->usage_page_table; + for (;page_block && page_block->usage_blockes;page_block++) { + if (page_block->page != page) + continue; + usage_block = page_block->usage_blockes; + for (; usage_block && usage_block->usage; usage_block++) { + if (usage_block->usage != usage) + continue; + hidinput_simple_configure_one_usage(op, input, + hid_usage, usage_block); + } + } +} + +/* + * To give one simple device a configure usage chance. + * The framework of this function come from hidinput_connect() + */ +void hidinput_simple_driver_configure_usage(struct hid_device *hid) +{ + struct hid_report *report; + int i, j, k; + do_usage_t do_usage; + int op; + + if (!hid->simple) + return; + do_usage = hidinput_simple_driver_configure_usage_prep(hid, &op); + + for (i = 0; i < hid->maxcollection; i++) + if (hid->collection[i].type == HID_COLLECTION_APPLICATION || + hid->collection[i].type==HID_COLLECTION_PHYSICAL) + if (IS_INPUT_APPLICATION(hid->collection[i].usage)) + break; + + if (i == hid->maxcollection) + return; + + for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) + list_for_each_entry(report, &hid->report_enum[k].report_list, list) { + if (!report->maxfield) + continue; + + for (i = 0; i < report->maxfield; i++) + for (j = 0; j < report->field[i]->maxusage; j++) { + __hidinput_simple_driver_configure_usage(op, report->field[i], report->field[i]->usage + j); + if (do_usage) + do_usage(report->field[i], + report->field[i]->usage + j); + } + } + + return; +} + +int hidinput_simple_driver_push(struct hid_device *hid, + struct hidinput_simple_driver *simple, + struct matched_device *matched) +{ + struct raw_simple_device *raw_simple; + + raw_simple = kmalloc(sizeof(struct raw_simple_device), GFP_KERNEL); + if (!raw_simple) + return -ENOMEM; + raw_simple->intf = matched->intf; + hid = usb_get_intfdata(matched->intf); + hid->simple = simple; + list_add(&raw_simple->node, &simple->raw_devices); + return 0; +} + +void hidinput_simple_driver_pop(struct hid_device *hid, + struct matched_device *matched) +{ + struct list_head *node; + struct raw_simple_device *raw_simple=NULL; + + list_for_each (node, &hid->simple->raw_devices) { + raw_simple = list_entry(node, struct raw_simple_device, node); + if (raw_simple && raw_simple->intf == matched->intf) { + hid->simple = NULL; + list_del(&raw_simple->node); + kfree(raw_simple); + return; + } + } +} + +void hidinput_simple_driver_clear(struct hidinput_simple_driver *simple) +{ + struct raw_simple_device *raw_simple; + struct hid_device *hid; + + while (!list_empty_careful(&simple->raw_devices)) { + raw_simple = list_entry(simple->raw_devices.next, + struct raw_simple_device, node); + hid = usb_get_intfdata (raw_simple->intf); + if (hid) { + if (hid->simple) + BUG_ON(hid->simple != simple); + hidinput_simple_driver_clear_usage(hid); + wmb(); + hidinput_simple_driver_disconnect(hid); + hid->simple = NULL; + } + list_del_init(simple->raw_devices.next); + } +} + +int hidinput_simple_driver_connect(struct hidinput_simple_driver *simple, + struct hid_device *hid) +{ + struct hid_input *hidinput, *next; + int ret = -ENODEV; + + if (!simple) + goto exit; + if (!simple->connect) { + ret = 0; + goto exit; + } + + list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { + if (!simple->connect(hid, hidinput)) { + hid->simple = simple; + ret = 0; + } + } +exit: + set_bit(HIDINPUT_SIMPLE_CONNECTED, &simple->flags); + return ret; +} + + +void hidinput_simple_driver_disconnect(struct hid_device *hid) +{ + struct hid_input *hidinput, *next; + + if (!hid || !hid->simple) + return; + + if (!hid->simple->disconnect) + goto exit; + list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { + hid->simple->disconnect(hid, hidinput); + } +exit: + clear_bit(HIDINPUT_SIMPLE_CONNECTED, &hid->simple->flags); + return; +} + +struct hid_input* hidinput_simple_inputdev_to_hidinput(struct input_dev *dev) +{ + struct hid_device *hid = dev->private; + struct list_head *iter; + struct hid_input *hidinput; + + list_for_each(iter, &hid->inputs) { + hidinput = list_entry(iter, struct hid_input, list); + if (hidinput->input == dev) + return hidinput; + } + return NULL; +} +EXPORT_SYMBOL_GPL(hidinput_simple_inputdev_to_hidinput); diff -Naurp linux-2.6.18/drivers/usb/input/hid-simple.h linux-2.6.18/drivers/usb/input.new/hid-simple.h --- linux-2.6.18/drivers/usb/input/hid-simple.h 1970-01-01 08:00:00.000000000 +0800 +++ linux-2.6.18/drivers/usb/input.new/hid-simple.h 2006-09-28 09:28:15.000000000 +0800 @@ -0,0 +1,232 @@ +/* + * NOTE: + * For use me , you must include hid.h in your source first. + */ +#ifndef __HID_SIMPLE_H +#define __HID_SIMPLE_H + +#ifdef __KERNEL__ + +#include <linux/usb.h> + +/***** The public interface for simple device driver *****/ +struct usage_block { + int usage; /* usage code */ + int value; /* not used, for F_EVENT_BY_VALUE in future */ + int event; /* input event type, e.g. EV_KEY. */ + int code; /* input subsystem code, e.g. KEY_F1. */ + int flags; /* not used */ +}; + +struct usage_page_block { + int page; /* usage page code */ + int flags; /* not used */ + struct usage_block *usage_blockes; +}; + +/* usage_block flags list */ +#define F_EVENT_BY_VALUE (0x1) /* submit input event by usage_block.value, + not implement yet */ + +#define USAGE_BLOCK(i_usage, i_value, i_event, i_code, i_flags) \ + {\ + .usage = (i_usage),\ + .value = (i_value),\ + .event = (i_event),\ + .code = (i_code),\ + .flags = (i_flags),\ + } + +#define USAGE_BLOCK_NULL {} + +#define USAGE_PAGE_BLOCK(i_page, i_usage_blockes) \ + {\ + .page = (i_page),\ + .usage_blockes = (i_usage_blockes),\ + } + +#define USAGE_PAGE_BLOCK_NULL {} + +#define __SIMPLE_DRIVER_INIT \ + .owner = THIS_MODULE, + +struct hidinput_simple_driver { +/* private */ + struct list_head node; /* link with simple_drivers_list */ + struct list_head raw_devices; + unsigned long flags; +/* public */ + struct module *owner; + char *name; + int (*connect)(struct hid_device *, struct hid_input *); + void (*disconnect)(struct hid_device *, struct hid_input *); + void (*setup_usage)(struct hid_field *, struct hid_usage *); + void (*clear_usage)(struct hid_field *, struct hid_usage *); + int (*pre_event)(const struct hid_device *, const struct hid_field *, + const struct hid_usage *, const __s32, + const struct pt_regs *regs); + int (*post_event)(const struct hid_device *, const struct hid_field *, + const struct hid_usage *, const __s32, + const struct pt_regs *regs); + int (*open)(struct input_dev *dev); + void (*close)(struct input_dev *dev); + int (*upload_effect)(struct input_dev *dev, struct ff_effect *effect); + int (*erase_effect)(struct input_dev *dev, int effect_id); + int (*flush)(struct input_dev *dev, struct file *file); + int (*ff_event)(struct input_dev *dev, int type, int code, int value); + struct usb_device_id *id_table; + struct usage_page_block *usage_page_table; + void *private; +}; + + +int hidinput_register_simple_driver(struct hidinput_simple_driver *device); +void hidinput_unregister_simple_driver(struct hidinput_simple_driver *device); +struct hid_input* hidinput_simple_inputdev_to_hidinput(struct input_dev *dev); + +/********************* The public section end ***********/ + +/***** The private section for simple device driver implement only *****/ + +/* simple driver internal flags */ +#define HIDINPUT_SIMPLE_SETUP_USAGE (0x0) +#define HIDINPUT_SIMPLE_KEYBIT (0x1) +#define HIDINPUT_SIMPLE_RELBIT (0x2) +#define HIDINPUT_SIMPLE_ABSBIT (0x3) +#define HIDINPUT_SIMPLE_MSCBIT (0x4) +#define HIDINPUT_SIMPLE_SWBIT (0x5) +#define HIDINPUT_SIMPLE_LEDBIT (0x6) +#define HIDINPUT_SIMPLE_SNDBIT (0x7) +#define HIDINPUT_SIMPLE_FFBIT (0x8) +#define HIDINPUT_SIMPLE_FFSTSBIT (0x9) +#define HIDINPUT_SIMPLE_CONNECTED (0x1f) + +/* used in hidinput_simple_driver_configure_usage() */ +#define __OP_SET_BIT (1) +#define __OP_CLR_BIT (0) + +/* + * matched_device record one device which hid-subsystem handle, it may + * be one simple device can not handle. + * + * The element of matched_device list is inserted at hidinput_connect(), + * and is removed at hidinput_disconnect(). + */ +struct matched_device { + struct usb_interface *intf; + struct list_head node; +}; + +/* + * raw_simple_driver record one device which hid simple device handle. + * It used as one member of hid_simple_driver. + */ + +struct raw_simple_device { + struct usb_interface *intf; + struct list_head node; +}; + +#ifdef CONFIG_HID_SIMPLE +extern void hidinput_simple_driver_configure_usage(struct hid_device *hid); +extern int hidinput_simple_driver_init(struct hidinput_simple_driver *simple); +extern int hidinput_simple_driver_push(struct hid_device *hid, + struct hidinput_simple_driver *simple, + struct matched_device *dev); +extern void hidinput_simple_driver_pop(struct hid_device *hid, + struct matched_device *dev); +extern void hidinput_simple_driver_clear(struct hidinput_simple_driver *simple); +extern int hidinput_simple_driver_connect(struct hidinput_simple_driver *simple, + struct hid_device *hid); +extern void hidinput_simple_driver_disconnect(struct hid_device *hid); +static void inline hidinput_simple_driver_setup_usage(struct hid_device *hid) +{ + if (hid && hid->simple) { + set_bit(HIDINPUT_SIMPLE_SETUP_USAGE, &hid->simple->flags); + hidinput_simple_driver_configure_usage(hid); + } +} + +static void inline hidinput_simple_driver_clear_usage(struct hid_device *hid) +{ + if (hid && hid->simple) { + clear_bit(HIDINPUT_SIMPLE_SETUP_USAGE, &hid->simple->flags); + hidinput_simple_driver_configure_usage(hid); + } +} + +#ifdef CONFIG_HID_SIMPLE_FF +static inline int hidinput_upload_effect(struct input_dev *dev, + struct ff_effect *effect) +{ + struct hid_device *hid; + + hid = dev->private; + if (hid->simple && hid->simple->upload_effect) + return hid->simple->upload_effect(dev, effect); + return 0; +} + +static inline int hidinput_erase_effect(struct input_dev *dev, int effect_id) +{ + struct hid_device *hid; + + hid = dev->private; + if (hid->simple && hid->simple->erase_effect) + return hid->simple->erase_effect(dev, effect_id); + return 0; +} + +static inline int hidinput_flush(struct input_dev *dev, struct file *filep) +{ + struct hid_device *hid; + + hid = dev->private; + if (hid->simple && hid->simple->flush) + return hid->simple->flush(dev, filep); + return 0; +} + +static void inline hidinput_simple_driver_ff_init(struct input_dev *input_dev) +{ + input_dev->upload_effect = hidinput_upload_effect; + input_dev->erase_effect = hidinput_erase_effect; + input_dev->flush = hidinput_flush; +} +#else /* CONFIG_HID_SIMPLE_FF */ +static void inline hidinput_simple_driver_ff_init(struct input_dev *input_dev) {} +#endif /* CONFIG_HID_SIMPLE_FF */ +#else /* CONFIG_HID_SIMPLE */ +static inline void hidinput_simple_driver_bind_foreach_simple( + struct matched_device *matched) {} +static inline void hidinput_simple_driver_configure_usage(struct hid_device *hid) +{} +static inline int hidinput_simple_driver_init(struct hidinput_simple_driver *simple) +{ + return 0; +} +static inline int hidinput_simple_driver_push(struct hid_device *hid, + struct hidinput_simple_driver *simple, + struct matched_device *dev) +{ + return 0; +} +static inline void hidinput_simple_driver_pop(struct hid_device *hid, + struct matched_device *dev) {} +static inline void hidinput_simple_driver_clear( + struct hidinput_simple_driver *simple) {} +static inline int hidinput_simple_driver_connect( + struct hidinput_simple_driver *simple, + struct hid_device *hid) +{ + return 0; +} +static inline void hidinput_simple_driver_disconnect(struct hid_device *hid) {} +static inline void hidinput_simple_driver_setup_usage(struct hid_device *hid) {} +static inline void hidinput_simple_driver_clear_usage(struct hid_device *hid) {} +static void inline hidinput_simple_driver_ff_init(struct input_dev *input_dev) {} +#endif + +/***** The private section end. *****/ +#endif /* __KERNEL__ */ +#endif /* __HID_SIMPLE_H */
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