diff options
Diffstat (limited to 'Documentation/input')
-rw-r--r-- | Documentation/input/input-programming.txt | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/Documentation/input/input-programming.txt b/Documentation/input/input-programming.txt index d9d523099bb7..4d932dc66098 100644 --- a/Documentation/input/input-programming.txt +++ b/Documentation/input/input-programming.txt | |||
@@ -42,8 +42,8 @@ static int __init button_init(void) | |||
42 | goto err_free_irq; | 42 | goto err_free_irq; |
43 | } | 43 | } |
44 | 44 | ||
45 | button_dev->evbit[0] = BIT(EV_KEY); | 45 | button_dev->evbit[0] = BIT_MASK(EV_KEY); |
46 | button_dev->keybit[LONG(BTN_0)] = BIT(BTN_0); | 46 | button_dev->keybit[BIT_WORD(BTN_0)] = BIT_MASK(BTN_0); |
47 | 47 | ||
48 | error = input_register_device(button_dev); | 48 | error = input_register_device(button_dev); |
49 | if (error) { | 49 | if (error) { |
@@ -217,14 +217,15 @@ If you don't need absfuzz and absflat, you can set them to zero, which mean | |||
217 | that the thing is precise and always returns to exactly the center position | 217 | that the thing is precise and always returns to exactly the center position |
218 | (if it has any). | 218 | (if it has any). |
219 | 219 | ||
220 | 1.4 NBITS(), LONG(), BIT() | 220 | 1.4 BITS_TO_LONGS(), BIT_WORD(), BIT_MASK() |
221 | ~~~~~~~~~~~~~~~~~~~~~~~~~~ | 221 | ~~~~~~~~~~~~~~~~~~~~~~~~~~ |
222 | 222 | ||
223 | These three macros from input.h help some bitfield computations: | 223 | These three macros from bitops.h help some bitfield computations: |
224 | 224 | ||
225 | NBITS(x) - returns the length of a bitfield array in longs for x bits | 225 | BITS_TO_LONGS(x) - returns the length of a bitfield array in longs for |
226 | LONG(x) - returns the index in the array in longs for bit x | 226 | x bits |
227 | BIT(x) - returns the index in a long for bit x | 227 | BIT_WORD(x) - returns the index in the array in longs for bit x |
228 | BIT_MASK(x) - returns the index in a long for bit x | ||
228 | 229 | ||
229 | 1.5 The id* and name fields | 230 | 1.5 The id* and name fields |
230 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | 231 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |