diff --git a/drivers/char/keyboard.c b/drivers/char/keyboard.c index cb8d691576da5c30a084db075686c7286158b048..3d211e8553f775c3166ab436db9830d97a9a2b74 100644 --- a/drivers/char/keyboard.c +++ b/drivers/char/keyboard.c @@ -159,65 +159,41 @@ static int sysrq_alt_use; static int sysrq_alt; /* - * Translation of scancodes to keycodes. We set them on only the first attached - * keyboard - for per-keyboard setting, /dev/input/event is more useful. + * Translation of scancodes to keycodes. We set them on only the first + * keyboard in the list that accepts the scancode and keycode. + * Explanation for not choosing the first attached keyboard anymore: + * USB keyboards for example have two event devices: one for all "normal" + * keys and one for extra function keys (like "volume up", "make coffee", + * etc.). So this means that scancodes for the extra function keys won't + * be valid for the first event device, but will be for the second. */ int getkeycode(unsigned int scancode) { - struct list_head *node; - struct input_dev *dev = NULL; + struct input_handle *handle; + int keycode; + int error = -ENODEV; - list_for_each(node, &kbd_handler.h_list) { - struct input_handle *handle = to_handle_h(node); - if (handle->dev->keycodesize) { - dev = handle->dev; - break; - } + list_for_each_entry(handle, &kbd_handler.h_list, h_node) { + error = handle->dev->getkeycode(handle->dev, scancode, &keycode); + if (!error) + return keycode; } - if (!dev) - return -ENODEV; - - if (scancode >= dev->keycodemax) - return -EINVAL; - - return INPUT_KEYCODE(dev, scancode); + return error; } int setkeycode(unsigned int scancode, unsigned int keycode) { - struct list_head *node; - struct input_dev *dev = NULL; - unsigned int i, oldkey; + struct input_handle *handle; + int error = -ENODEV; - list_for_each(node, &kbd_handler.h_list) { - struct input_handle *handle = to_handle_h(node); - if (handle->dev->keycodesize) { - dev = handle->dev; + list_for_each_entry(handle, &kbd_handler.h_list, h_node) { + error = handle->dev->setkeycode(handle->dev, scancode, keycode); + if (!error) break; - } } - if (!dev) - return -ENODEV; - - if (scancode >= dev->keycodemax) - return -EINVAL; - if (keycode < 0 || keycode > KEY_MAX) - return -EINVAL; - if (dev->keycodesize < sizeof(keycode) && (keycode >> (dev->keycodesize * 8))) - return -EINVAL; - - oldkey = SET_INPUT_KEYCODE(dev, scancode, keycode); - - clear_bit(oldkey, dev->keybit); - set_bit(keycode, dev->keybit); - - for (i = 0; i < dev->keycodemax; i++) - if (INPUT_KEYCODE(dev,i) == oldkey) - set_bit(oldkey, dev->keybit); - - return 0; + return error; } /* @@ -225,10 +201,9 @@ int setkeycode(unsigned int scancode, unsigned int keycode) */ static void kd_nosound(unsigned long ignored) { - struct list_head *node; + struct input_handle *handle; - list_for_each(node, &kbd_handler.h_list) { - struct input_handle *handle = to_handle_h(node); + list_for_each_entry(handle, &kbd_handler.h_list, h_node) { if (test_bit(EV_SND, handle->dev->evbit)) { if (test_bit(SND_TONE, handle->dev->sndbit)) input_inject_event(handle, EV_SND, SND_TONE, 0); diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c index 6439f378f6cc9562f23ec5f8ee331f57bd898f45..64b47de052bbe12d58845cb5130143330e3ef917 100644 --- a/drivers/input/evdev.c +++ b/drivers/input/evdev.c @@ -434,32 +434,21 @@ static long evdev_ioctl_handler(struct file *file, unsigned int cmd, case EVIOCGKEYCODE: if (get_user(t, ip)) return -EFAULT; - if (t < 0 || t >= dev->keycodemax || !dev->keycodesize) - return -EINVAL; - if (put_user(INPUT_KEYCODE(dev, t), ip + 1)) + + error = dev->getkeycode(dev, t, &v); + if (error) + return error; + + if (put_user(v, ip + 1)) return -EFAULT; + return 0; case EVIOCSKEYCODE: - if (get_user(t, ip)) - return -EFAULT; - if (t < 0 || t >= dev->keycodemax || !dev->keycodesize) - return -EINVAL; - if (get_user(v, ip + 1)) + if (get_user(t, ip) || get_user(v, ip + 1)) return -EFAULT; - if (v < 0 || v > KEY_MAX) - return -EINVAL; - if (dev->keycodesize < sizeof(v) && (v >> (dev->keycodesize * 8))) - return -EINVAL; - - u = SET_INPUT_KEYCODE(dev, t, v); - clear_bit(u, dev->keybit); - set_bit(v, dev->keybit); - for (i = 0; i < dev->keycodemax; i++) - if (INPUT_KEYCODE(dev, i) == u) - set_bit(u, dev->keybit); - return 0; + return dev->setkeycode(dev, t, v); case EVIOCSFF: if (copy_from_user(&effect, p, sizeof(effect))) diff --git a/drivers/input/input.c b/drivers/input/input.c index 4486402fbf5d2cb7578f1aa2cd108c37a9dd8fc0..26393a606e6f46f46ee940636a25c8f5a79dc119 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -299,6 +299,87 @@ void input_close_device(struct input_handle *handle) } EXPORT_SYMBOL(input_close_device); +static int input_fetch_keycode(struct input_dev *dev, int scancode) +{ + switch (dev->keycodesize) { + case 1: + return ((u8 *)dev->keycode)[scancode]; + + case 2: + return ((u16 *)dev->keycode)[scancode]; + + default: + return ((u32 *)dev->keycode)[scancode]; + } +} + +static int input_default_getkeycode(struct input_dev *dev, + int scancode, int *keycode) +{ + if (!dev->keycodesize) + return -EINVAL; + + if (scancode < 0 || scancode >= dev->keycodemax) + return -EINVAL; + + *keycode = input_fetch_keycode(dev, scancode); + + return 0; +} + +static int input_default_setkeycode(struct input_dev *dev, + int scancode, int keycode) +{ + int old_keycode; + int i; + + if (scancode < 0 || scancode >= dev->keycodemax) + return -EINVAL; + + if (keycode < 0 || keycode > KEY_MAX) + return -EINVAL; + + if (!dev->keycodesize) + return -EINVAL; + + if (dev->keycodesize < sizeof(keycode) && (keycode >> (dev->keycodesize * 8))) + return -EINVAL; + + switch (dev->keycodesize) { + case 1: { + u8 *k = (u8 *)dev->keycode; + old_keycode = k[scancode]; + k[scancode] = keycode; + break; + } + case 2: { + u16 *k = (u16 *)dev->keycode; + old_keycode = k[scancode]; + k[scancode] = keycode; + break; + } + default: { + u32 *k = (u32 *)dev->keycode; + old_keycode = k[scancode]; + k[scancode] = keycode; + break; + } + } + + clear_bit(old_keycode, dev->keybit); + set_bit(keycode, dev->keybit); + + for (i = 0; i < dev->keycodemax; i++) { + if (input_fetch_keycode(dev, i) == old_keycode) { + set_bit(old_keycode, dev->keybit); + break; /* Setting the bit twice is useless, so break */ + } + } + + return 0; +} + + static void input_link_handle(struct input_handle *handle) { list_add_tail(&handle->d_node, &handle->dev->h_list); @@ -978,6 +1059,12 @@ int input_register_device(struct input_dev *dev) dev->rep[REP_PERIOD] = 33; } + if (!dev->getkeycode) + dev->getkeycode = input_default_getkeycode; + + if (!dev->setkeycode) + dev->setkeycode = input_default_setkeycode; + list_add_tail(&dev->node, &input_dev_list); snprintf(dev->cdev.class_id, sizeof(dev->cdev.class_id), diff --git a/include/linux/input.h b/include/linux/input.h index bde65c8a351939ce5aa19fc7e85c511be1037e99..3a8b8c6f0ab5343e16911146b4770293e88bed74 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -913,33 +913,6 @@ struct ff_effect { #define BIT(x) (1UL<<((x)%BITS_PER_LONG)) #define LONG(x) ((x)/BITS_PER_LONG) -#define INPUT_KEYCODE(dev, scancode) ((dev->keycodesize == 1) ? ((u8*)dev->keycode)[scancode] : \ - ((dev->keycodesize == 2) ? ((u16*)dev->keycode)[scancode] : (((u32*)dev->keycode)[scancode]))) - -#define SET_INPUT_KEYCODE(dev, scancode, val) \ - ({ unsigned __old; \ - switch (dev->keycodesize) { \ - case 1: { \ - u8 *k = (u8 *)dev->keycode; \ - __old = k[scancode]; \ - k[scancode] = val; \ - break; \ - } \ - case 2: { \ - u16 *k = (u16 *)dev->keycode; \ - __old = k[scancode]; \ - k[scancode] = val; \ - break; \ - } \ - default: { \ - u32 *k = (u32 *)dev->keycode; \ - __old = k[scancode]; \ - k[scancode] = val; \ - break; \ - } \ - } \ - __old; }) - struct input_dev { void *private; @@ -962,6 +935,8 @@ struct input_dev { unsigned int keycodemax; unsigned int keycodesize; void *keycode; + int (*setkeycode)(struct input_dev *dev, int scancode, int keycode); + int (*getkeycode)(struct input_dev *dev, int scancode, int *keycode); struct ff_device *ff; @@ -1104,7 +1079,7 @@ struct input_handle { }; #define to_dev(n) container_of(n,struct input_dev,node) -#define to_handler(n) container_of(n,struct input_handler,node); +#define to_handler(n) container_of(n,struct input_handler,node) #define to_handle(n) container_of(n,struct input_handle,d_node) #define to_handle_h(n) container_of(n,struct input_handle,h_node)