diff options
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/Kconfig | 14 | ||||
| -rw-r--r-- | drivers/hwmon/applesmc.c | 5 | ||||
| -rw-r--r-- | drivers/hwmon/hp_accel.c | 75 |
3 files changed, 88 insertions, 6 deletions
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index 5c349a19a3a3..b84bf066879b 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -871,6 +871,8 @@ config SENSORS_HDAPS config SENSORS_LIS3LV02D tristate "STMicroeletronics LIS3LV02Dx three-axis digital accelerometer" depends on ACPI && INPUT + select NEW_LEDS + select LEDS_CLASS default n help This driver provides support for the LIS3LV02Dx accelerometer. In @@ -882,10 +884,16 @@ config SENSORS_LIS3LV02D /sys/devices/platform/lis3lv02d. This driver also provides an absolute input class device, allowing - the laptop to act as a pinball machine-esque joystick. + the laptop to act as a pinball machine-esque joystick. On HP laptops, + if the led infrastructure is activated, support for a led indicating + disk protection will be provided as hp:red:hddprotection. - This driver can also be built as a module. If so, the module - will be called lis3lv02d. + This driver can also be built as modules. If so, the core module + will be called lis3lv02d and a specific module for HP laptops will be + called hp_accel. + + Say Y here if you have an applicable laptop and want to experience + the awesome power of lis3lv02d. config SENSORS_APPLESMC tristate "Apple SMC (Motion sensor, light sensor, keyboard backlight)" diff --git a/drivers/hwmon/applesmc.c b/drivers/hwmon/applesmc.c index dca47a591baf..e30186236588 100644 --- a/drivers/hwmon/applesmc.c +++ b/drivers/hwmon/applesmc.c @@ -590,6 +590,11 @@ static ssize_t applesmc_light_show(struct device *dev, } ret = applesmc_read_key(LIGHT_SENSOR_LEFT_KEY, buffer, data_length); + /* newer macbooks report a single 10-bit bigendian value */ + if (data_length == 10) { + left = be16_to_cpu(*(__be16 *)(buffer + 6)) >> 2; + goto out; + } left = buffer[2]; if (ret) goto out; diff --git a/drivers/hwmon/hp_accel.c b/drivers/hwmon/hp_accel.c index bf8d40580577..03705240000f 100644 --- a/drivers/hwmon/hp_accel.c +++ b/drivers/hwmon/hp_accel.c @@ -3,7 +3,7 @@ * * Copyright (C) 2007-2008 Yan Burman * Copyright (C) 2008 Eric Piel - * Copyright (C) 2008 Pavel Machek + * Copyright (C) 2008-2009 Pavel Machek * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -36,6 +36,7 @@ #include <linux/freezer.h> #include <linux/version.h> #include <linux/uaccess.h> +#include <linux/leds.h> #include <acpi/acpi_drivers.h> #include <asm/atomic.h> #include "lis3lv02d.h" @@ -43,6 +44,36 @@ #define DRIVER_NAME "lis3lv02d" #define ACPI_MDPS_CLASS "accelerometer" +/* Delayed LEDs infrastructure ------------------------------------ */ + +/* Special LED class that can defer work */ +struct delayed_led_classdev { + struct led_classdev led_classdev; + struct work_struct work; + enum led_brightness new_brightness; + + unsigned int led; /* For driver */ + void (*set_brightness)(struct delayed_led_classdev *data, enum led_brightness value); +}; + +static inline void delayed_set_status_worker(struct work_struct *work) +{ + struct delayed_led_classdev *data = + container_of(work, struct delayed_led_classdev, work); + + data->set_brightness(data, data->new_brightness); +} + +static inline void delayed_sysfs_set(struct led_classdev *led_cdev, + enum led_brightness brightness) +{ + struct delayed_led_classdev *data = container_of(led_cdev, + struct delayed_led_classdev, led_classdev); + data->new_brightness = brightness; + schedule_work(&data->work); +} + +/* HP-specific accelerometer driver ------------------------------------ */ /* For automatic insertion of the module */ static struct acpi_device_id lis3lv02d_device_ids[] = { @@ -154,10 +185,33 @@ static struct dmi_system_id lis3lv02d_dmi_ids[] = { */ }; +static void hpled_set(struct delayed_led_classdev *led_cdev, enum led_brightness value) +{ + acpi_handle handle = adev.device->handle; + unsigned long long ret; /* Not used when writing */ + union acpi_object in_obj[1]; + struct acpi_object_list args = { 1, in_obj }; + + in_obj[0].type = ACPI_TYPE_INTEGER; + in_obj[0].integer.value = !!value; + + acpi_evaluate_integer(handle, "ALED", &args, &ret); +} + +static struct delayed_led_classdev hpled_led = { + .led_classdev = { + .name = "hp::hddprotect", + .default_trigger = "none", + .brightness_set = delayed_sysfs_set, + .flags = LED_CORE_SUSPENDRESUME, + }, + .set_brightness = hpled_set, +}; static int lis3lv02d_add(struct acpi_device *device) { u8 val; + int ret; if (!device) return -EINVAL; @@ -183,7 +237,19 @@ static int lis3lv02d_add(struct acpi_device *device) adev.ac = lis3lv02d_axis_normal; } - return lis3lv02d_init_device(&adev); + INIT_WORK(&hpled_led.work, delayed_set_status_worker); + ret = led_classdev_register(NULL, &hpled_led.led_classdev); + if (ret) + return ret; + + ret = lis3lv02d_init_device(&adev); + if (ret) { + flush_work(&hpled_led.work); + led_classdev_unregister(&hpled_led.led_classdev); + return ret; + } + + return ret; } static int lis3lv02d_remove(struct acpi_device *device, int type) @@ -194,6 +260,9 @@ static int lis3lv02d_remove(struct acpi_device *device, int type) lis3lv02d_joystick_disable(); lis3lv02d_poweroff(device->handle); + flush_work(&hpled_led.work); + led_classdev_unregister(&hpled_led.led_classdev); + return lis3lv02d_remove_fs(); } @@ -256,7 +325,7 @@ static void __exit lis3lv02d_exit_module(void) acpi_bus_unregister_driver(&lis3lv02d_driver); } -MODULE_DESCRIPTION("Glue between LIS3LV02Dx and HP ACPI BIOS"); +MODULE_DESCRIPTION("Glue between LIS3LV02Dx and HP ACPI BIOS and support for disk protection LED."); MODULE_AUTHOR("Yan Burman, Eric Piel, Pavel Machek"); MODULE_LICENSE("GPL"); |
