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[PATCH] INPUT: add MODALIAS to the event environment 

input: add MODALIAS to the event environment

Signed-off-by: Kay Sievers <kay.sievers@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Kay Sievers 2006-01-05 13:19:55 +01:00 committed by Greg Kroah-Hartman
parent 67daf5f11f
commit bd37e5a951
1 changed files with 41 additions and 22 deletions
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63
drivers/input/input.c
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@ -528,40 +528,56 @@ INPUT_DEV_STRING_ATTR_SHOW(name);
INPUT_DEV_STRING_ATTR_SHOW(phys);
INPUT_DEV_STRING_ATTR_SHOW(uniq);
static int print_modalias_bits(char *buf, char prefix, unsigned long *arr,
static int print_modalias_bits(char *buf, int size, char prefix, unsigned long *arr,
unsigned int min, unsigned int max)
{
int len, i;
len = sprintf(buf, "%c", prefix);
len = snprintf(buf, size, "%c", prefix);
for (i = min; i < max; i++)
if (arr[LONG(i)] & BIT(i))
len += sprintf(buf+len, "%X,", i);
len += snprintf(buf + len, size - len, "%X,", i);
return len;
}
static int print_modalias(char *buf, int size, struct input_dev *id)
{
int len;
len = snprintf(buf, size, "input:b%04Xv%04Xp%04Xe%04X-",
id->id.bustype,
id->id.vendor,
id->id.product,
id->id.version);
len += print_modalias_bits(buf + len, size - len, 'e', id->evbit,
0, EV_MAX);
len += print_modalias_bits(buf + len, size - len, 'k', id->keybit,
KEY_MIN_INTERESTING, KEY_MAX);
len += print_modalias_bits(buf + len, size - len, 'r', id->relbit,
0, REL_MAX);
len += print_modalias_bits(buf + len, size - len, 'a', id->absbit,
0, ABS_MAX);
len += print_modalias_bits(buf + len, size - len, 'm', id->mscbit,
0, MSC_MAX);
len += print_modalias_bits(buf + len, size - len, 'l', id->ledbit,
0, LED_MAX);
len += print_modalias_bits(buf + len, size - len, 's', id->sndbit,
0, SND_MAX);
len += print_modalias_bits(buf + len, size - len, 'f', id->ffbit,
0, FF_MAX);
len += print_modalias_bits(buf + len, size - len, 'w', id->swbit,
0, SW_MAX);
return len;
}
static ssize_t input_dev_show_modalias(struct class_device *dev, char *buf)
{
struct input_dev *id = to_input_dev(dev);
ssize_t len = 0;
ssize_t len;
len += sprintf(buf+len, "input:b%04Xv%04Xp%04Xe%04X-",
id->id.bustype,
id->id.vendor,
id->id.product,
id->id.version);
len += print_modalias_bits(buf+len, 'e', id->evbit, 0, EV_MAX);
len += print_modalias_bits(buf+len, 'k', id->keybit,
KEY_MIN_INTERESTING, KEY_MAX);
len += print_modalias_bits(buf+len, 'r', id->relbit, 0, REL_MAX);
len += print_modalias_bits(buf+len, 'a', id->absbit, 0, ABS_MAX);
len += print_modalias_bits(buf+len, 'm', id->mscbit, 0, MSC_MAX);
len += print_modalias_bits(buf+len, 'l', id->ledbit, 0, LED_MAX);
len += print_modalias_bits(buf+len, 's', id->sndbit, 0, SND_MAX);
len += print_modalias_bits(buf+len, 'f', id->ffbit, 0, FF_MAX);
len += print_modalias_bits(buf+len, 'w', id->swbit, 0, SW_MAX);
len += sprintf(buf+len, "\n");
len = print_modalias(buf, PAGE_SIZE, id);
len += snprintf(buf + len, PAGE_SIZE-len, "\n");
return len;
}
static CLASS_DEVICE_ATTR(modalias, S_IRUGO, input_dev_show_modalias, NULL);
@ -728,8 +744,11 @@ static int input_dev_uevent(struct class_device *cdev, char **envp,
if (test_bit(EV_SW, dev->evbit))
INPUT_ADD_HOTPLUG_BM_VAR("SW=", dev->swbit, SW_MAX);
envp[i] = NULL;
envp[i++] = buffer + len;
len += snprintf(buffer + len, buffer_size - len, "MODALIAS=");
len += print_modalias(buffer + len, buffer_size - len, dev) + 1;
envp[i] = NULL;
return 0;
}