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Input: atkbd - allow setting force-release bitmap via sysfs

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There are more and more laptop requiring use of force_release quirk
for their multimedia and other specialized keys. Adding their DMI data
to the kernel is not sustainable; instead we will rely on help from
userspace (HAL) to do that for us.

This patch creates a new 'force_release' sysfs attribute (that belongs
to serio device to which keyboard is attached) which can be used to set
up force_release keymap. For example, Dell laptop owners might do:

echo 133-139,143,147 > /sys/devices/platform/i8042/serio0/force_release

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Dmitry Torokhov 2009-09-03 17:22:04 -07:00
parent 903b9124ea
commit 1ba36e11b2
1 changed files with 37 additions and 6 deletions
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43
drivers/input/keyboard/atkbd.c
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@ -68,7 +68,9 @@ MODULE_PARM_DESC(extra, "Enable extra LEDs and keys on IBM RapidAcces, EzKey and
* are loadable via a userland utility.
*/
static const unsigned short atkbd_set2_keycode[512] = {
#define ATKBD_KEYMAP_SIZE 512
static const unsigned short atkbd_set2_keycode[ATKBD_KEYMAP_SIZE] = {
#ifdef CONFIG_KEYBOARD_ATKBD_HP_KEYCODES
@ -99,7 +101,7 @@ static const unsigned short atkbd_set2_keycode[512] = {
#endif
};
static const unsigned short atkbd_set3_keycode[512] = {
static const unsigned short atkbd_set3_keycode[ATKBD_KEYMAP_SIZE] = {
0, 0, 0, 0, 0, 0, 0, 59, 1,138,128,129,130, 15, 41, 60,
131, 29, 42, 86, 58, 16, 2, 61,133, 56, 44, 31, 30, 17, 3, 62,
@ -200,8 +202,8 @@ struct atkbd {
char phys[32];
unsigned short id;
unsigned short keycode[512];
DECLARE_BITMAP(force_release_mask, 512);
unsigned short keycode[ATKBD_KEYMAP_SIZE];
DECLARE_BITMAP(force_release_mask, ATKBD_KEYMAP_SIZE);
unsigned char set;
unsigned char translated;
unsigned char extra;
@ -253,6 +255,7 @@ static struct device_attribute atkbd_attr_##_name = \
__ATTR(_name, S_IWUSR | S_IRUGO, atkbd_do_show_##_name, atkbd_do_set_##_name);
ATKBD_DEFINE_ATTR(extra);
ATKBD_DEFINE_ATTR(force_release);
ATKBD_DEFINE_ATTR(scroll);
ATKBD_DEFINE_ATTR(set);
ATKBD_DEFINE_ATTR(softrepeat);
@ -272,6 +275,7 @@ ATKBD_DEFINE_RO_ATTR(err_count);
static struct attribute *atkbd_attributes[] = {
&atkbd_attr_extra.attr,
&atkbd_attr_force_release.attr,
&atkbd_attr_scroll.attr,
&atkbd_attr_set.attr,
&atkbd_attr_softrepeat.attr,
@ -926,7 +930,7 @@ static void atkbd_set_keycode_table(struct atkbd *atkbd)
int i, j;
memset(atkbd->keycode, 0, sizeof(atkbd->keycode));
bitmap_zero(atkbd->force_release_mask, 512);
bitmap_zero(atkbd->force_release_mask, ATKBD_KEYMAP_SIZE);
if (atkbd->translated) {
for (i = 0; i < 128; i++) {
@ -1033,7 +1037,7 @@ static void atkbd_set_device_attrs(struct atkbd *atkbd)
input_dev->keycodesize = sizeof(unsigned short);
input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode);
for (i = 0; i < 512; i++)
for (i = 0; i < ATKBD_KEYMAP_SIZE; i++)
if (atkbd->keycode[i] && atkbd->keycode[i] < ATKBD_SPECIAL)
__set_bit(atkbd->keycode[i], input_dev->keybit);
}
@ -1301,6 +1305,33 @@ static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t coun
return count;
}
static ssize_t atkbd_show_force_release(struct atkbd *atkbd, char *buf)
{
size_t len = bitmap_scnlistprintf(buf, PAGE_SIZE - 2,
atkbd->force_release_mask, ATKBD_KEYMAP_SIZE);
buf[len++] = '\n';
buf[len] = '\0';
return len;
}
static ssize_t atkbd_set_force_release(struct atkbd *atkbd,
const char *buf, size_t count)
{
/* 64 bytes on stack should be acceptable */
DECLARE_BITMAP(new_mask, ATKBD_KEYMAP_SIZE);
int err;
err = bitmap_parselist(buf, new_mask, ATKBD_KEYMAP_SIZE);
if (err)
return err;
memcpy(atkbd->force_release_mask, new_mask, sizeof(atkbd->force_release_mask));
return count;
}
static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf)
{
return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0);