* Pontus Fuchs - Helper functions, cleanup
* Johann Wiesner - Small compile fixes
* John Belmonte - ACPI code for Toshiba laptop was a good starting point.
- * Éric Burghard - LED display support for W1N
+ * �ic Burghard - LED display support for W1N
*
*/
#include <linux/init.h>
#include <linux/types.h>
#include <linux/proc_fs.h>
+#include <linux/backlight.h>
#include <acpi/acpi_drivers.h>
#include <acpi/acpi_bus.h>
#include <asm/uaccess.h>
S2x, //S200 (J1 reported), Victor MP-XP7210
W1N, //W1000N
W5A, //W5A
+ W3V, //W3030V
xxN, //M2400N, M3700N, M5200N, M6800N, S1300N, S5200N
+ A4S, //Z81sp
//(Centrino)
END_MODEL
} model; //Models currently supported
.brightness_set = "SPLV",
.brightness_get = "GPLV",
.display_set = "SDSP",
- .display_get = "\\_SB.PCI0.P0P1.VGA.GETD"},
+ .display_get = "\\SSTE"},
+
{
.name = "M6R",
.mt_mled = "MLED",
.brightness_set = "SPLV",
.brightness_get = "GPLV",
.display_set = "SDSP",
- .display_get = "\\SSTE"},
+ .display_get = "\\_SB.PCI0.P0P1.VGA.GETD"},
{
.name = "P30",
.display_get = "\\ADVG"},
{
+ .name = "W3V",
+ .mt_mled = "MLED",
+ .mt_wled = "WLED",
+ .mt_lcd_switch = xxN_PREFIX "_Q10",
+ .lcd_status = "\\BKLT",
+ .brightness_set = "SPLV",
+ .brightness_get = "GPLV",
+ .display_set = "SDSP",
+ .display_get = "\\INFB"},
+
+ {
.name = "xxN",
.mt_mled = "MLED",
/* WLED present, but not controlled by ACPI */
.brightness_set = "SPLV",
.brightness_get = "GPLV",
.display_set = "SDSP",
- .display_get = "\\ADVG"}
+ .display_get = "\\ADVG"},
+
+ {
+ .name = "A4S",
+ .brightness_set = "SPLV",
+ .brightness_get = "GPLV",
+ .mt_bt_switch = "BLED",
+ .mt_wled = "WLED"
+ }
+
};
/* procdir we use */
static struct proc_dir_entry *asus_proc_dir;
+static struct backlight_device *asus_backlight_device;
+
/*
* This header is made available to allow proper configuration given model,
* revision number , ... this info cannot go in struct asus_hotk because it is
static int asus_hotk_add(struct acpi_device *device);
static int asus_hotk_remove(struct acpi_device *device, int type);
static struct acpi_driver asus_hotk_driver = {
- .name = ACPI_HOTK_NAME,
+ .name = "asus_acpi",
.class = ACPI_HOTK_CLASS,
.ids = ACPI_HOTK_HID,
.ops = {
write_led(const char __user * buffer, unsigned long count,
char *ledname, int ledmask, int invert)
{
- int value;
+ int rv, value;
int led_out = 0;
- count = parse_arg(buffer, count, &value);
- if (count > 0)
+ rv = parse_arg(buffer, count, &value);
+ if (rv > 0)
led_out = value ? 1 : 0;
hotk->status =
printk(KERN_WARNING "Asus ACPI: LED (%s) write failed\n",
ledname);
- return count;
+ return rv;
}
/*
proc_write_ledd(struct file *file, const char __user * buffer,
unsigned long count, void *data)
{
- int value;
+ int rv, value;
- count = parse_arg(buffer, count, &value);
- if (count > 0) {
+ rv = parse_arg(buffer, count, &value);
+ if (rv > 0) {
if (!write_acpi_int
(hotk->handle, hotk->methods->mt_ledd, value, NULL))
printk(KERN_WARNING
"Asus ACPI: LED display write failed\n");
else
hotk->ledd_status = (u32) value;
- } else if (count < 0)
- printk(KERN_WARNING "Asus ACPI: Error reading user input\n");
-
- return count;
+ }
+ return rv;
}
/*
proc_write_lcd(struct file *file, const char __user * buffer,
unsigned long count, void *data)
{
- int value;
+ int rv, value;
- count = parse_arg(buffer, count, &value);
- if (count > 0)
+ rv = parse_arg(buffer, count, &value);
+ if (rv > 0)
set_lcd_state(value);
- return count;
+ return rv;
}
-static int read_brightness(void)
+static int read_brightness(struct backlight_device *bd)
{
int value;
/*
* Change the brightness level
*/
-static void set_brightness(int value)
+static int set_brightness(int value)
{
acpi_status status = 0;
+ int ret = 0;
/* SPLV laptop */
if (hotk->methods->brightness_set) {
value, NULL))
printk(KERN_WARNING
"Asus ACPI: Error changing brightness\n");
- return;
+ ret = -EIO;
+ goto out;
}
/* No SPLV method if we are here, act as appropriate */
- value -= read_brightness();
+ value -= read_brightness(NULL);
while (value != 0) {
status = acpi_evaluate_object(NULL, (value > 0) ?
hotk->methods->brightness_up :
if (ACPI_FAILURE(status))
printk(KERN_WARNING
"Asus ACPI: Error changing brightness\n");
+ ret = -EIO;
}
- return;
+out:
+ return ret;
+}
+
+static int set_brightness_status(struct backlight_device *bd)
+{
+ return set_brightness(bd->props.brightness);
}
static int
proc_read_brn(char *page, char **start, off_t off, int count, int *eof,
void *data)
{
- return sprintf(page, "%d\n", read_brightness());
+ return sprintf(page, "%d\n", read_brightness(NULL));
}
static int
proc_write_brn(struct file *file, const char __user * buffer,
unsigned long count, void *data)
{
- int value;
+ int rv, value;
- count = parse_arg(buffer, count, &value);
- if (count > 0) {
+ rv = parse_arg(buffer, count, &value);
+ if (rv > 0) {
value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
/* 0 <= value <= 15 */
set_brightness(value);
- } else if (count < 0) {
- printk(KERN_WARNING "Asus ACPI: Error reading user input\n");
}
-
- return count;
+ return rv;
}
static void set_display(int value)
proc_write_disp(struct file *file, const char __user * buffer,
unsigned long count, void *data)
{
- int value;
+ int rv, value;
- count = parse_arg(buffer, count, &value);
- if (count > 0)
+ rv = parse_arg(buffer, count, &value);
+ if (rv > 0)
set_display(value);
- else if (count < 0)
- printk(KERN_WARNING "Asus ACPI: Error reading user input\n");
-
- return count;
+ return rv;
}
typedef int (proc_readfunc) (char *page, char **start, off_t off, int count,
}
/*
+ * Match the model string to the list of supported models. Return END_MODEL if
+ * no match or model is NULL.
+ */
+static int asus_model_match(char *model)
+{
+ if (model == NULL)
+ return END_MODEL;
+
+ if (strncmp(model, "L3D", 3) == 0)
+ return L3D;
+ else if (strncmp(model, "L2E", 3) == 0 ||
+ strncmp(model, "L3H", 3) == 0 || strncmp(model, "L5D", 3) == 0)
+ return L3H;
+ else if (strncmp(model, "L3", 2) == 0 || strncmp(model, "L2B", 3) == 0)
+ return L3C;
+ else if (strncmp(model, "L8L", 3) == 0)
+ return L8L;
+ else if (strncmp(model, "L4R", 3) == 0)
+ return L4R;
+ else if (strncmp(model, "M6N", 3) == 0 || strncmp(model, "W3N", 3) == 0)
+ return M6N;
+ else if (strncmp(model, "M6R", 3) == 0 || strncmp(model, "A3G", 3) == 0)
+ return M6R;
+ else if (strncmp(model, "M2N", 3) == 0 ||
+ strncmp(model, "M3N", 3) == 0 ||
+ strncmp(model, "M5N", 3) == 0 ||
+ strncmp(model, "M6N", 3) == 0 ||
+ strncmp(model, "S1N", 3) == 0 ||
+ strncmp(model, "S5N", 3) == 0 || strncmp(model, "W1N", 3) == 0)
+ return xxN;
+ else if (strncmp(model, "M1", 2) == 0)
+ return M1A;
+ else if (strncmp(model, "M2", 2) == 0 || strncmp(model, "L4E", 3) == 0)
+ return M2E;
+ else if (strncmp(model, "L2", 2) == 0)
+ return L2D;
+ else if (strncmp(model, "L8", 2) == 0)
+ return S1x;
+ else if (strncmp(model, "D1", 2) == 0)
+ return D1x;
+ else if (strncmp(model, "A1", 2) == 0)
+ return A1x;
+ else if (strncmp(model, "A2", 2) == 0)
+ return A2x;
+ else if (strncmp(model, "J1", 2) == 0)
+ return S2x;
+ else if (strncmp(model, "L5", 2) == 0)
+ return L5x;
+ else if (strncmp(model, "A4G", 3) == 0)
+ return A4G;
+ else if (strncmp(model, "W1N", 3) == 0)
+ return W1N;
+ else if (strncmp(model, "W3V", 3) == 0)
+ return W3V;
+ else if (strncmp(model, "W5A", 3) == 0)
+ return W5A;
+ else if (strncmp(model, "A4S", 3) == 0)
+ return A4S;
+ else
+ return END_MODEL;
+}
+
+/*
* This function is used to initialize the hotk with right values. In this
* method, we can make all the detection we want, and modify the hotk struct
*/
static int asus_hotk_get_info(void)
{
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
- struct acpi_buffer dsdt = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *model = NULL;
int bsts_result;
+ char *string = NULL;
acpi_status status;
/*
* HID), this bit will be moved. A global variable asus_info contains
* the DSDT header.
*/
- status = acpi_get_table(ACPI_TABLE_ID_DSDT, 1, &dsdt);
+ status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus_info);
if (ACPI_FAILURE(status))
printk(KERN_WARNING " Couldn't get the DSDT table header\n");
- else
- asus_info = (struct acpi_table_header *)dsdt.pointer;
/* We have to write 0 on init this far for all ASUS models */
if (!write_acpi_int(hotk->handle, "INIT", 0, &buffer)) {
printk(KERN_NOTICE " BSTS called, 0x%02x returned\n",
bsts_result);
- /* This is unlikely with implicit return */
- if (buffer.pointer == NULL)
- return -EINVAL;
-
- model = (union acpi_object *)buffer.pointer;
/*
- * Samsung P30 has a device with a valid _HID whose INIT does not
- * return anything. It used to be possible to catch this exception,
- * but the implicit return code will now happily confuse the
- * driver. We assume that every ACPI_TYPE_STRING is a valid model
- * identifier but it's still possible to get completely bogus data.
+ * Try to match the object returned by INIT to the specific model.
+ * Handle every possible object (or the lack of thereof) the DSDT
+ * writers might throw at us. When in trouble, we pass NULL to
+ * asus_model_match() and try something completely different.
*/
- if (model->type == ACPI_TYPE_STRING) {
- printk(KERN_NOTICE " %s model detected, ",
- model->string.pointer);
- } else {
- if (asus_info && /* Samsung P30 */
+ if (buffer.pointer) {
+ model = buffer.pointer;
+ switch (model->type) {
+ case ACPI_TYPE_STRING:
+ string = model->string.pointer;
+ break;
+ case ACPI_TYPE_BUFFER:
+ string = model->buffer.pointer;
+ break;
+ default:
+ kfree(model);
+ break;
+ }
+ }
+ hotk->model = asus_model_match(string);
+ if (hotk->model == END_MODEL) { /* match failed */
+ if (asus_info &&
strncmp(asus_info->oem_table_id, "ODEM", 4) == 0) {
hotk->model = P30;
printk(KERN_NOTICE
" Samsung P30 detected, supported\n");
} else {
hotk->model = M2E;
- printk(KERN_WARNING " no string returned by INIT\n");
- printk(KERN_WARNING " trying default values, supply "
- "the developers with your DSDT\n");
+ printk(KERN_NOTICE " unsupported model %s, trying "
+ "default values\n", string);
+ printk(KERN_NOTICE
+ " send /proc/acpi/dsdt to the developers\n");
}
hotk->methods = &model_conf[hotk->model];
-
- kfree(model);
-
return AE_OK;
}
-
- hotk->model = END_MODEL;
- if (strncmp(model->string.pointer, "L3D", 3) == 0)
- hotk->model = L3D;
- else if (strncmp(model->string.pointer, "L2E", 3) == 0 ||
- strncmp(model->string.pointer, "L3H", 3) == 0 ||
- strncmp(model->string.pointer, "L5D", 3) == 0)
- hotk->model = L3H;
- else if (strncmp(model->string.pointer, "L3", 2) == 0 ||
- strncmp(model->string.pointer, "L2B", 3) == 0)
- hotk->model = L3C;
- else if (strncmp(model->string.pointer, "L8L", 3) == 0)
- hotk->model = L8L;
- else if (strncmp(model->string.pointer, "L4R", 3) == 0)
- hotk->model = L4R;
- else if (strncmp(model->string.pointer, "M6N", 3) == 0 ||
- strncmp(model->string.pointer, "W3N", 3) == 0)
- hotk->model = M6N;
- else if (strncmp(model->string.pointer, "M6R", 3) == 0 ||
- strncmp(model->string.pointer, "A3G", 3) == 0)
- hotk->model = M6R;
- else if (strncmp(model->string.pointer, "M2N", 3) == 0 ||
- strncmp(model->string.pointer, "M3N", 3) == 0 ||
- strncmp(model->string.pointer, "M5N", 3) == 0 ||
- strncmp(model->string.pointer, "M6N", 3) == 0 ||
- strncmp(model->string.pointer, "S1N", 3) == 0 ||
- strncmp(model->string.pointer, "S5N", 3) == 0)
- hotk->model = xxN;
- else if (strncmp(model->string.pointer, "M1", 2) == 0)
- hotk->model = M1A;
- else if (strncmp(model->string.pointer, "M2", 2) == 0 ||
- strncmp(model->string.pointer, "L4E", 3) == 0)
- hotk->model = M2E;
- else if (strncmp(model->string.pointer, "L2", 2) == 0)
- hotk->model = L2D;
- else if (strncmp(model->string.pointer, "L8", 2) == 0)
- hotk->model = S1x;
- else if (strncmp(model->string.pointer, "D1", 2) == 0)
- hotk->model = D1x;
- else if (strncmp(model->string.pointer, "A1", 2) == 0)
- hotk->model = A1x;
- else if (strncmp(model->string.pointer, "A2", 2) == 0)
- hotk->model = A2x;
- else if (strncmp(model->string.pointer, "J1", 2) == 0)
- hotk->model = S2x;
- else if (strncmp(model->string.pointer, "L5", 2) == 0)
- hotk->model = L5x;
- else if (strncmp(model->string.pointer, "A4G", 3) == 0)
- hotk->model = A4G;
- else if (strncmp(model->string.pointer, "W1N", 3) == 0)
- hotk->model = W1N;
- else if (strncmp(model->string.pointer, "W5A", 3) == 0)
- hotk->model = W5A;
-
- if (hotk->model == END_MODEL) {
- printk("unsupported, trying default values, supply the "
- "developers with your DSDT\n");
- hotk->model = M2E;
- } else {
- printk("supported\n");
- }
-
hotk->methods = &model_conf[hotk->model];
+ printk(KERN_NOTICE " %s model detected, supported\n", string);
/* Sort of per-model blacklist */
- if (strncmp(model->string.pointer, "L2B", 3) == 0)
+ if (strncmp(string, "L2B", 3) == 0)
hotk->methods->lcd_status = NULL;
/* L2B is similar enough to L3C to use its settings, with this only
exception */
- else if (strncmp(model->string.pointer, "A3G", 3) == 0)
+ else if (strncmp(string, "A3G", 3) == 0)
hotk->methods->lcd_status = "\\BLFG";
/* A3G is like M6R */
- else if (strncmp(model->string.pointer, "S5N", 3) == 0 ||
- strncmp(model->string.pointer, "M5N", 3) == 0 ||
- strncmp(model->string.pointer, "W3N", 3) == 0)
+ else if (strncmp(string, "S5N", 3) == 0 ||
+ strncmp(string, "M5N", 3) == 0 ||
+ strncmp(string, "W3N", 3) == 0)
hotk->methods->mt_mled = NULL;
/* S5N, M5N and W3N have no MLED */
- else if (strncmp(model->string.pointer, "L5D", 3) == 0)
+ else if (strncmp(string, "L5D", 3) == 0)
hotk->methods->mt_wled = NULL;
/* L5D's WLED is not controlled by ACPI */
- else if (strncmp(model->string.pointer, "M2N", 3) == 0)
+ else if (strncmp(string, "M2N", 3) == 0 ||
+ strncmp(string, "W3V", 3) == 0 ||
+ strncmp(string, "S1N", 3) == 0)
hotk->methods->mt_wled = "WLED";
- /* M2N has a usable WLED */
+ /* M2N, S1N and W3V have a usable WLED */
else if (asus_info) {
if (strncmp(asus_info->oem_table_id, "L1", 2) == 0)
hotk->methods->mled_status = NULL;
printk(KERN_NOTICE "Asus Laptop ACPI Extras version %s\n",
ASUS_ACPI_VERSION);
- hotk =
- (struct asus_hotk *)kmalloc(sizeof(struct asus_hotk), GFP_KERNEL);
+ hotk = kzalloc(sizeof(struct asus_hotk), GFP_KERNEL);
if (!hotk)
return -ENOMEM;
- memset(hotk, 0, sizeof(struct asus_hotk));
hotk->handle = device->handle;
strcpy(acpi_device_name(device), ACPI_HOTK_DEVICE_NAME);
return 0;
}
+static struct backlight_ops asus_backlight_data = {
+ .get_brightness = read_brightness,
+ .update_status = set_brightness_status,
+};
+
+static void asus_acpi_exit(void)
+{
+ if (asus_backlight_device)
+ backlight_device_unregister(asus_backlight_device);
+
+ acpi_bus_unregister_driver(&asus_hotk_driver);
+ remove_proc_entry(PROC_ASUS, acpi_root_dir);
+
+ return;
+}
+
static int __init asus_acpi_init(void)
{
int result;
if (acpi_disabled)
return -ENODEV;
- if (!acpi_specific_hotkey_enabled) {
- printk(KERN_ERR "Using generic hotkey driver\n");
- return -ENODEV;
- }
asus_proc_dir = proc_mkdir(PROC_ASUS, acpi_root_dir);
if (!asus_proc_dir) {
printk(KERN_ERR "Asus ACPI: Unable to create /proc entry\n");
if (!asus_hotk_found) {
acpi_bus_unregister_driver(&asus_hotk_driver);
remove_proc_entry(PROC_ASUS, acpi_root_dir);
- return result;
+ return -ENODEV;
}
- return 0;
-}
-
-static void __exit asus_acpi_exit(void)
-{
- acpi_bus_unregister_driver(&asus_hotk_driver);
- remove_proc_entry(PROC_ASUS, acpi_root_dir);
-
- kfree(asus_info);
+ asus_backlight_device = backlight_device_register("asus",NULL,NULL,
+ &asus_backlight_data);
+ if (IS_ERR(asus_backlight_device)) {
+ printk(KERN_ERR "Could not register asus backlight device\n");
+ asus_backlight_device = NULL;
+ asus_acpi_exit();
+ return -ENODEV;
+ }
+ asus_backlight_device->props.max_brightness = 15;
- return;
+ return 0;
}
module_init(asus_acpi_init);