From 8b857353237c144113b9bbbf9e0236b3f0e7d315 Mon Sep 17 00:00:00 2001 From: Corentin Chary Date: Fri, 26 Jan 2007 14:04:58 +0100 Subject: [PATCH] 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 Signed-off-by: Len Brown --- drivers/misc/asus-laptop.c | 84 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) diff --git a/drivers/misc/asus-laptop.c b/drivers/misc/asus-laptop.c index bd963c6365c8..6f72cd529556 100644 --- a/drivers/misc/asus-laptop.c +++ b/drivers/misc/asus-laptop.c @@ -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); -- 2.34.1