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ACPI: thinkpad-acpi: add sysfs support to hotkey subdriver

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Add the hotkey sysfs support.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Henrique de Moraes Holschuh
2007-04-27 22:00:16 -03:00
committed by Len Brown
parent d94a7f16ca
commit a0416420e2
3 changed files with 176 additions and 11 deletions
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127
drivers/misc/thinkpad_acpi.c
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@@ -706,6 +706,108 @@ static struct ibm_struct thinkpad_acpi_driver_data = {
static int hotkey_orig_status;
static int hotkey_orig_mask;
static struct attribute_set *hotkey_dev_attributes = NULL;
/* sysfs hotkey enable ------------------------------------------------- */
static ssize_t hotkey_enable_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int res, status, mask;
res = hotkey_get(&status, &mask);
if (res)
return res;
return snprintf(buf, PAGE_SIZE, "%d\n", status);
}
static ssize_t hotkey_enable_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
unsigned long t;
int res, status, mask;
if (parse_strtoul(buf, 1, &t))
return -EINVAL;
res = hotkey_get(&status, &mask);
if (!res)
res = hotkey_set(t, mask);
return (res) ? res : count;
}
static struct device_attribute dev_attr_hotkey_enable =
__ATTR(enable, S_IWUSR | S_IRUGO,
hotkey_enable_show, hotkey_enable_store);
/* sysfs hotkey mask --------------------------------------------------- */
static ssize_t hotkey_mask_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int res, status, mask;
res = hotkey_get(&status, &mask);
if (res)
return res;
return snprintf(buf, PAGE_SIZE, "0x%04x\n", mask);
}
static ssize_t hotkey_mask_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
unsigned long t;
int res, status, mask;
if (parse_strtoul(buf, 0xffff, &t))
return -EINVAL;
res = hotkey_get(&status, &mask);
if (!res)
hotkey_set(status, t);
return (res) ? res : count;
}
static struct device_attribute dev_attr_hotkey_mask =
__ATTR(mask, S_IWUSR | S_IRUGO,
hotkey_mask_show, hotkey_mask_store);
/* sysfs hotkey bios_enabled ------------------------------------------- */
static ssize_t hotkey_bios_enabled_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_orig_status);
}
static struct device_attribute dev_attr_hotkey_bios_enabled =
__ATTR(bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
/* sysfs hotkey bios_mask ---------------------------------------------- */
static ssize_t hotkey_bios_mask_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return snprintf(buf, PAGE_SIZE, "0x%04x\n", hotkey_orig_mask);
}
static struct device_attribute dev_attr_hotkey_bios_mask =
__ATTR(bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
/* --------------------------------------------------------------------- */
static struct attribute *hotkey_mask_attributes[] = {
&dev_attr_hotkey_mask.attr,
&dev_attr_hotkey_bios_enabled.attr,
&dev_attr_hotkey_bios_mask.attr,
};
static int __init hotkey_init(struct ibm_init_struct *iibm)
{
int res;
@@ -722,6 +824,15 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
str_supported(tp_features.hotkey));
if (tp_features.hotkey) {
hotkey_dev_attributes = create_attr_set(4,
TPACPI_HOTKEY_SYSFS_GROUP);
if (!hotkey_dev_attributes)
return -ENOMEM;
res = add_to_attr_set(hotkey_dev_attributes,
&dev_attr_hotkey_enable.attr);
if (res)
return res;
/* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
A30, R30, R31, T20-22, X20-21, X22-24 */
tp_features.hotkey_mask =
@@ -731,6 +842,16 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
str_supported(tp_features.hotkey_mask));
res = hotkey_get(&hotkey_orig_status, &hotkey_orig_mask);
if (!res && tp_features.hotkey_mask) {
res = add_many_to_attr_set(hotkey_dev_attributes,
hotkey_mask_attributes,
ARRAY_SIZE(hotkey_mask_attributes));
}
if (!res)
res = register_attr_set_with_sysfs(
hotkey_dev_attributes,
&tpacpi_pdev->dev.kobj);
if (res)
return res;
}
@@ -748,6 +869,11 @@ static void hotkey_exit(void)
if (res)
printk(IBM_ERR "failed to restore hotkey to BIOS defaults\n");
}
if (hotkey_dev_attributes) {
delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
hotkey_dev_attributes = NULL;
}
}
static void hotkey_notify(struct ibm_struct *ibm, u32 event)
@@ -798,6 +924,7 @@ static int hotkey_set(int status, int mask)
return 0;
}
/* procfs -------------------------------------------------------------- */
static int hotkey_read(char *p)
{
int res, status, mask;