#include <linux/init.h>
#include <linux/types.h>
#include <linux/platform_device.h>
+#include <linux/backlight.h>
+#include <linux/fb.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
#include <acpi/acpi_drivers.h>
#include <acpi/acpi_bus.h>
#include <linux/uaccess.h>
* Definitions for Asus EeePC
*/
#define NOTIFY_WLAN_ON 0x10
+#define NOTIFY_BRN_MIN 0x20
+#define NOTIFY_BRN_MAX 0x2f
enum {
DISABLE_ASL_WLAN = 0x0001,
CM_ASL_LID
};
-const char *cm_getv[] = {
+static const char *cm_getv[] = {
"WLDG", NULL, NULL, NULL,
"CAMG", NULL, NULL, NULL,
NULL, "PBLG", NULL, NULL,
"CRDG", "LIDG"
};
-const char *cm_setv[] = {
+static const char *cm_setv[] = {
"WLDS", NULL, NULL, NULL,
"CAMS", NULL, NULL, NULL,
"SDSP", "PBLS", "HDPS", NULL,
"CRDS", NULL
};
+#define EEEPC_EC "\\_SB.PCI0.SBRG.EC0."
+
+#define EEEPC_EC_FAN_PWM EEEPC_EC "SC02" /* Fan PWM duty cycle (%) */
+#define EEEPC_EC_SC02 0x63
+#define EEEPC_EC_FAN_HRPM EEEPC_EC "SC05" /* High byte, fan speed (RPM) */
+#define EEEPC_EC_FAN_LRPM EEEPC_EC "SC06" /* Low byte, fan speed (RPM) */
+#define EEEPC_EC_FAN_CTRL EEEPC_EC "SFB3" /* Byte containing SF25 */
+#define EEEPC_EC_SFB3 0xD3
+
/*
* This is the main structure, we can use it to store useful information
* about the hotk device
},
};
+/* The backlight device /sys/class/backlight */
+static struct backlight_device *eeepc_backlight_device;
+
+/* The hwmon device */
+static struct device *eeepc_hwmon_device;
+
+/*
+ * The backlight class declaration
+ */
+static int read_brightness(struct backlight_device *bd);
+static int update_bl_status(struct backlight_device *bd);
+static struct backlight_ops eeepcbl_ops = {
+ .get_brightness = read_brightness,
+ .update_status = update_bl_status,
+};
+
MODULE_AUTHOR("Corentin Chary, Eric Cooper");
MODULE_DESCRIPTION(EEEPC_HOTK_NAME);
MODULE_LICENSE("GPL");
return value;
}
+/*
+ * Backlight
+ */
+static int read_brightness(struct backlight_device *bd)
+{
+ return get_acpi(CM_ASL_PANELBRIGHT);
+}
+
+static int set_brightness(struct backlight_device *bd, int value)
+{
+ value = max(0, min(15, value));
+ return set_acpi(CM_ASL_PANELBRIGHT, value);
+}
+
+static int update_bl_status(struct backlight_device *bd)
+{
+ return set_brightness(bd, bd->props.brightness);
+}
+
/*
* Sys helpers
*/
}
}
+static void notify_brn(void)
+{
+ struct backlight_device *bd = eeepc_backlight_device;
+ bd->props.brightness = read_brightness(bd);
+}
+
static void eeepc_hotk_notify(acpi_handle handle, u32 event, void *data)
{
if (!ehotk)
return;
if (event == NOTIFY_WLAN_ON && (DISABLE_ASL_WLAN & ehotk->init_flag))
notify_wlan(&event);
+ if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX)
+ notify_brn();
acpi_bus_generate_proc_event(ehotk->device, event,
ehotk->event_count[event % 128]++);
}
ehotk->handle = device->handle;
strcpy(acpi_device_name(device), EEEPC_HOTK_DEVICE_NAME);
strcpy(acpi_device_class(device), EEEPC_HOTK_CLASS);
- acpi_driver_data(device) = ehotk;
+ device->driver_data = ehotk;
ehotk->device = device;
result = eeepc_hotk_check();
if (result)
return 0;
}
+/*
+ * Hwmon
+ */
+static int eeepc_get_fan_pwm(void)
+{
+ int value = 0;
+
+ read_acpi_int(NULL, EEEPC_EC_FAN_PWM, &value);
+ value = value * 255 / 100;
+ return (value);
+}
+
+static void eeepc_set_fan_pwm(int value)
+{
+ value = SENSORS_LIMIT(value, 0, 255);
+ value = value * 100 / 255;
+ ec_write(EEEPC_EC_SC02, value);
+}
+
+static int eeepc_get_fan_rpm(void)
+{
+ int high = 0;
+ int low = 0;
+
+ read_acpi_int(NULL, EEEPC_EC_FAN_HRPM, &high);
+ read_acpi_int(NULL, EEEPC_EC_FAN_LRPM, &low);
+ return (high << 8 | low);
+}
+
+static int eeepc_get_fan_ctrl(void)
+{
+ int value = 0;
+
+ read_acpi_int(NULL, EEEPC_EC_FAN_CTRL, &value);
+ return ((value & 0x02 ? 1 : 0));
+}
+
+static void eeepc_set_fan_ctrl(int manual)
+{
+ int value = 0;
+
+ read_acpi_int(NULL, EEEPC_EC_FAN_CTRL, &value);
+ if (manual)
+ value |= 0x02;
+ else
+ value &= ~0x02;
+ ec_write(EEEPC_EC_SFB3, value);
+}
+
+static ssize_t store_sys_hwmon(void (*set)(int), const char *buf, size_t count)
+{
+ int rv, value;
+
+ rv = parse_arg(buf, count, &value);
+ if (rv > 0)
+ set(value);
+ return rv;
+}
+
+static ssize_t show_sys_hwmon(int (*get)(void), char *buf)
+{
+ return sprintf(buf, "%d\n", get());
+}
+
+#define EEEPC_CREATE_SENSOR_ATTR(_name, _mode, _set, _get) \
+ static ssize_t show_##_name(struct device *dev, \
+ struct device_attribute *attr, \
+ char *buf) \
+ { \
+ return show_sys_hwmon(_set, buf); \
+ } \
+ static ssize_t store_##_name(struct device *dev, \
+ struct device_attribute *attr, \
+ const char *buf, size_t count) \
+ { \
+ return store_sys_hwmon(_get, buf, count); \
+ } \
+ static SENSOR_DEVICE_ATTR(_name, _mode, show_##_name, store_##_name, 0);
+
+EEEPC_CREATE_SENSOR_ATTR(fan1_input, S_IRUGO, eeepc_get_fan_rpm, NULL);
+EEEPC_CREATE_SENSOR_ATTR(pwm1, S_IRUGO | S_IWUSR,
+ eeepc_get_fan_pwm, eeepc_set_fan_pwm);
+EEEPC_CREATE_SENSOR_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
+ eeepc_get_fan_ctrl, eeepc_set_fan_ctrl);
+
+static ssize_t
+show_name(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "eeepc\n");
+}
+static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
+
+static struct attribute *hwmon_attributes[] = {
+ &sensor_dev_attr_pwm1.dev_attr.attr,
+ &sensor_dev_attr_fan1_input.dev_attr.attr,
+ &sensor_dev_attr_pwm1_enable.dev_attr.attr,
+ &sensor_dev_attr_name.dev_attr.attr,
+ NULL
+};
+
+static struct attribute_group hwmon_attribute_group = {
+ .attrs = hwmon_attributes
+};
+
/*
* exit/init
*/
+static void eeepc_backlight_exit(void)
+{
+ if (eeepc_backlight_device)
+ backlight_device_unregister(eeepc_backlight_device);
+ eeepc_backlight_device = NULL;
+}
+
+static void eeepc_hwmon_exit(void)
+{
+ struct device *hwmon;
+
+ hwmon = eeepc_hwmon_device;
+ if (!hwmon)
+ return ;
+ sysfs_remove_group(&hwmon->kobj,
+ &hwmon_attribute_group);
+ hwmon_device_unregister(hwmon);
+ eeepc_hwmon_device = NULL;
+}
+
static void __exit eeepc_laptop_exit(void)
{
+ eeepc_backlight_exit();
+ eeepc_hwmon_exit();
acpi_bus_unregister_driver(&eeepc_hotk_driver);
sysfs_remove_group(&platform_device->dev.kobj,
&platform_attribute_group);
platform_driver_unregister(&platform_driver);
}
+static int eeepc_backlight_init(struct device *dev)
+{
+ struct backlight_device *bd;
+
+ bd = backlight_device_register(EEEPC_HOTK_FILE, dev,
+ NULL, &eeepcbl_ops);
+ if (IS_ERR(bd)) {
+ printk(EEEPC_ERR
+ "Could not register eeepc backlight device\n");
+ eeepc_backlight_device = NULL;
+ return PTR_ERR(bd);
+ }
+ eeepc_backlight_device = bd;
+ bd->props.max_brightness = 15;
+ bd->props.brightness = read_brightness(NULL);
+ bd->props.power = FB_BLANK_UNBLANK;
+ backlight_update_status(bd);
+ return 0;
+}
+
+static int eeepc_hwmon_init(struct device *dev)
+{
+ struct device *hwmon;
+ int result;
+
+ hwmon = hwmon_device_register(dev);
+ if (IS_ERR(hwmon)) {
+ printk(EEEPC_ERR
+ "Could not register eeepc hwmon device\n");
+ eeepc_hwmon_device = NULL;
+ return PTR_ERR(hwmon);
+ }
+ eeepc_hwmon_device = hwmon;
+ result = sysfs_create_group(&hwmon->kobj,
+ &hwmon_attribute_group);
+ if (result)
+ eeepc_hwmon_exit();
+ return result;
+}
+
static int __init eeepc_laptop_init(void)
{
struct device *dev;
return -ENODEV;
}
dev = acpi_get_physical_device(ehotk->device->handle);
+ result = eeepc_backlight_init(dev);
+ if (result)
+ goto fail_backlight;
+ result = eeepc_hwmon_init(dev);
+ if (result)
+ goto fail_hwmon;
/* Register platform stuff */
result = platform_driver_register(&platform_driver);
if (result)
fail_platform_device1:
platform_driver_unregister(&platform_driver);
fail_platform_driver:
+ eeepc_hwmon_exit();
+fail_hwmon:
+ eeepc_backlight_exit();
+fail_backlight:
return result;
}
projects / linux-2.6-omap-h63xx.git / blobdiff