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asus-laptop: add light sensor support 

/proc/acpi/asus/lslvl is now /sys/.../asus-laptop/ls_level
/proc/acpi/asus/lssw is now /sys/.../asus-laptop/ls_switch nothing
else ..

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Corentin Chary 2007-01-26 14:04:58 +01:00 committed by Len Brown
parent 722ad97153
commit 8b85735323
1 changed files with 84 additions and 0 deletions
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84
drivers/misc/asus-laptop.c
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@ -145,6 +145,9 @@ ASUS_HANDLE(display_get,
"\\INFB", /* A2H D1 L2D L3D L3H L2E L5D L5C M1A M2E L4L W3V */
"\\SSTE"); /* A3F A6F A3N A3L M6N W3N W6A */
ASUS_HANDLE(ls_switch, ASUS_HOTK_PREFIX "ALSC"); /* Z71A Z71V */
ASUS_HANDLE(ls_level, ASUS_HOTK_PREFIX "ALSL"); /* Z71A Z71V */
/*
* This is the main structure, we can use it to store anything interesting
* about the hotk device
@ -155,6 +158,8 @@ struct asus_hotk {
acpi_handle handle; //the handle of the hotk device
char status; //status of the hotk, for LEDs, ...
u32 ledd_status; //status of the LED display
u8 light_level; //light sensor level
u8 light_switch; //light sensor switch value
u16 event_count[128]; //count for each event TODO make this better
};
@ -590,6 +595,62 @@ static ssize_t store_disp(struct device *dev, struct device_attribute *attr,
return rv;
}
/*
* Light Sens
*/
static void set_light_sens_switch(int value)
{
if (!write_acpi_int(ls_switch_handle, NULL, value, NULL))
printk(ASUS_WARNING "Error setting light sensor switch\n");
hotk->light_switch = value;
}
static ssize_t show_lssw(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%d\n", hotk->light_switch);
}
static ssize_t store_lssw(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
int rv, value;
rv = parse_arg(buf, count, &value);
if (rv > 0)
set_light_sens_switch(value ? 1 : 0);
return rv;
}
static void set_light_sens_level(int value)
{
if (!write_acpi_int(ls_level_handle, NULL, value, NULL))
printk(ASUS_WARNING "Error setting light sensor level\n");
hotk->light_level = value;
}
static ssize_t show_lslvl(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%d\n", hotk->light_level);
}
static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
int rv, value;
rv = parse_arg(buf, count, &value);
if (rv > 0) {
value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
/* 0 <= value <= 15 */
set_light_sens_level(value);
}
return rv;
}
static void asus_hotk_notify(acpi_handle handle, u32 event, void *data)
{
/* TODO Find a better way to handle events count. */
@ -636,6 +697,8 @@ static ASUS_CREATE_DEVICE_ATTR(wlan);
static ASUS_CREATE_DEVICE_ATTR(bluetooth);
static ASUS_CREATE_DEVICE_ATTR(display);
static ASUS_CREATE_DEVICE_ATTR(ledd);
static ASUS_CREATE_DEVICE_ATTR(ls_switch);
static ASUS_CREATE_DEVICE_ATTR(ls_level);
static struct attribute *asuspf_attributes[] = {
&dev_attr_infos.attr,
@ -643,6 +706,8 @@ static struct attribute *asuspf_attributes[] = {
&dev_attr_bluetooth.attr,
&dev_attr_display.attr,
&dev_attr_ledd.attr,
&dev_attr_ls_switch.attr,
&dev_attr_ls_level.attr,
NULL
};
@ -679,6 +744,10 @@ static void asus_hotk_add_fs(void)
if (ledd_set_handle)
ASUS_SET_DEVICE_ATTR(ledd, 0644, show_ledd, store_ledd);
if (ls_switch_handle && ls_level_handle) {
ASUS_SET_DEVICE_ATTR(ls_level, 0644, show_lslvl, store_lslvl);
ASUS_SET_DEVICE_ATTR(ls_switch, 0644, show_lssw, store_lssw);
}
}
static int asus_handle_init(char *name, acpi_handle *handle,
@ -800,6 +869,11 @@ static int asus_hotk_get_info(void)
ASUS_HANDLE_INIT(display_set);
ASUS_HANDLE_INIT(display_get);
/* There is a lot of models with "ALSL", but a few get
a real light sens, so we need to check it. */
if(ASUS_HANDLE_INIT(ls_switch))
ASUS_HANDLE_INIT(ls_level);
kfree(model);
return AE_OK;
@ -874,6 +948,16 @@ static int asus_hotk_add(struct acpi_device *device)
/* LED display is off by default */
hotk->ledd_status = 0xFFF;
/* Set initial values of light sensor and level */
hotk->light_switch = 1; /* Default to light sensor disabled */
hotk->light_level = 0; /* level 5 for sensor sensitivity */
if (ls_switch_handle)
set_light_sens_switch(hotk->light_switch);
if (ls_level_handle)
set_light_sens_level(hotk->light_level);
end:
if (result) {
kfree(hotk->name);