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authorHenrique de Moraes Holschuh <hmh@hmh.eng.br>2007-04-27 22:00:16 -0300
committerLen Brown <len.brown@intel.com>2007-04-28 21:41:20 -0400
commita0416420e2c6244792d6f308183ad57c40532078 (patch)
treedcd0600b74f3e4a120843d2f6cd7f6faa4e64ec0 /drivers/misc
parentd94a7f16cad7700f8d2b142cc13cfba5387af3db (diff)
ACPI: thinkpad-acpi: add sysfs support to hotkey subdriver
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>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/thinkpad_acpi.c127
-rw-r--r--drivers/misc/thinkpad_acpi.h2
2 files changed, 129 insertions, 0 deletions
diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c
index a56526500c1..83a8d984e70 100644
--- a/drivers/misc/thinkpad_acpi.c
+++ b/drivers/misc/thinkpad_acpi.c
@@ -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;
diff --git a/drivers/misc/thinkpad_acpi.h b/drivers/misc/thinkpad_acpi.h
index a9e70936825..7615adb381c 100644
--- a/drivers/misc/thinkpad_acpi.h
+++ b/drivers/misc/thinkpad_acpi.h
@@ -414,6 +414,8 @@ static int fan_write_cmd_watchdog(const char *cmd, int *rc);
* Hotkey subdriver
*/
+#define TPACPI_HOTKEY_SYSFS_GROUP "hotkey"
+
static int hotkey_orig_status;
static int hotkey_orig_mask;