diff options
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/Kconfig | 21 | ||||
| -rw-r--r-- | drivers/misc/Makefile | 3 | ||||
| -rw-r--r-- | drivers/misc/eeepc-laptop.c | 666 | ||||
| -rw-r--r-- | drivers/misc/intel_menlow.c | 28 | ||||
| -rw-r--r-- | drivers/misc/thinkpad_acpi.c | 765 |
5 files changed, 1269 insertions, 214 deletions
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index 297a48f8544..636af286230 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -140,6 +140,7 @@ config ACER_WMI depends on EXPERIMENTAL depends on ACPI depends on LEDS_CLASS + depends on NEW_LEDS depends on BACKLIGHT_CLASS_DEVICE depends on SERIO_I8042 select ACPI_WMI @@ -160,6 +161,7 @@ config ASUS_LAPTOP depends on ACPI depends on EXPERIMENTAL && !ACPI_ASUS depends on LEDS_CLASS + depends on NEW_LEDS depends on BACKLIGHT_CLASS_DEVICE ---help--- This is the new Linux driver for Asus laptops. It may also support some @@ -241,10 +243,13 @@ config SONYPI_COMPAT config THINKPAD_ACPI tristate "ThinkPad ACPI Laptop Extras" depends on X86 && ACPI + select BACKLIGHT_LCD_SUPPORT select BACKLIGHT_CLASS_DEVICE select HWMON select NVRAM - depends on INPUT + select INPUT + select NEW_LEDS + select LEDS_CLASS ---help--- This is a driver for the IBM and Lenovo ThinkPad laptops. It adds support for Fn-Fx key combinations, Bluetooth control, video @@ -344,6 +349,7 @@ config ATMEL_SSC config INTEL_MENLOW tristate "Thermal Management driver for Intel menlow platform" depends on ACPI_THERMAL + select THERMAL depends on X86 ---help--- ACPI thermal management enhancement driver on @@ -351,6 +357,19 @@ config INTEL_MENLOW If unsure, say N. +config EEEPC_LAPTOP + tristate "Eee PC Hotkey Driver (EXPERIMENTAL)" + depends on X86 + depends on ACPI + depends on BACKLIGHT_CLASS_DEVICE + depends on HWMON + depends on EXPERIMENTAL + ---help--- + This driver supports the Fn-Fx keys on Eee PC laptops. + It also adds the ability to switch camera/wlan on/off. + + If you have an Eee PC laptop, say Y or M here. + config ENCLOSURE_SERVICES tristate "Enclosure Services" default n diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index 5914da43485..1952875a272 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -7,7 +7,8 @@ obj-$(CONFIG_IBM_ASM) += ibmasm/ obj-$(CONFIG_HDPU_FEATURES) += hdpuftrs/ obj-$(CONFIG_MSI_LAPTOP) += msi-laptop.o obj-$(CONFIG_ACER_WMI) += acer-wmi.o -obj-$(CONFIG_ASUS_LAPTOP) += asus-laptop.o +obj-$(CONFIG_ASUS_LAPTOP) += asus-laptop.o +obj-$(CONFIG_EEEPC_LAPTOP) += eeepc-laptop.o obj-$(CONFIG_ATMEL_PWM) += atmel_pwm.o obj-$(CONFIG_ATMEL_SSC) += atmel-ssc.o obj-$(CONFIG_ATMEL_TCLIB) += atmel_tclib.o diff --git a/drivers/misc/eeepc-laptop.c b/drivers/misc/eeepc-laptop.c new file mode 100644 index 00000000000..6d727609097 --- /dev/null +++ b/drivers/misc/eeepc-laptop.c @@ -0,0 +1,666 @@ +/* + * eepc-laptop.c - Asus Eee PC extras + * + * Based on asus_acpi.c as patched for the Eee PC by Asus: + * ftp://ftp.asus.com/pub/ASUS/EeePC/701/ASUS_ACPI_071126.rar + * Based on eee.c from eeepc-linux + * + * 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 + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#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> + +#define EEEPC_LAPTOP_VERSION "0.1" + +#define EEEPC_HOTK_NAME "Eee PC Hotkey Driver" +#define EEEPC_HOTK_FILE "eeepc" +#define EEEPC_HOTK_CLASS "hotkey" +#define EEEPC_HOTK_DEVICE_NAME "Hotkey" +#define EEEPC_HOTK_HID "ASUS010" + +#define EEEPC_LOG EEEPC_HOTK_FILE ": " +#define EEEPC_ERR KERN_ERR EEEPC_LOG +#define EEEPC_WARNING KERN_WARNING EEEPC_LOG +#define EEEPC_NOTICE KERN_NOTICE EEEPC_LOG +#define EEEPC_INFO KERN_INFO EEEPC_LOG + +/* + * Definitions for Asus EeePC + */ +#define NOTIFY_WLAN_ON 0x10 +#define NOTIFY_BRN_MIN 0x20 +#define NOTIFY_BRN_MAX 0x2f + +enum { + DISABLE_ASL_WLAN = 0x0001, + DISABLE_ASL_BLUETOOTH = 0x0002, + DISABLE_ASL_IRDA = 0x0004, + DISABLE_ASL_CAMERA = 0x0008, + DISABLE_ASL_TV = 0x0010, + DISABLE_ASL_GPS = 0x0020, + DISABLE_ASL_DISPLAYSWITCH = 0x0040, + DISABLE_ASL_MODEM = 0x0080, + DISABLE_ASL_CARDREADER = 0x0100 +}; + +enum { + CM_ASL_WLAN = 0, + CM_ASL_BLUETOOTH, + CM_ASL_IRDA, + CM_ASL_1394, + CM_ASL_CAMERA, + CM_ASL_TV, + CM_ASL_GPS, + CM_ASL_DVDROM, + CM_ASL_DISPLAYSWITCH, + CM_ASL_PANELBRIGHT, + CM_ASL_BIOSFLASH, + CM_ASL_ACPIFLASH, + CM_ASL_CPUFV, + CM_ASL_CPUTEMPERATURE, + CM_ASL_FANCPU, + CM_ASL_FANCHASSIS, + CM_ASL_USBPORT1, + CM_ASL_USBPORT2, + CM_ASL_USBPORT3, + CM_ASL_MODEM, + CM_ASL_CARDREADER, + CM_ASL_LID +}; + +const char *cm_getv[] = { + "WLDG", NULL, NULL, NULL, + "CAMG", NULL, NULL, NULL, + NULL, "PBLG", NULL, NULL, + "CFVG", NULL, NULL, NULL, + "USBG", NULL, NULL, "MODG", + "CRDG", "LIDG" +}; + +const char *cm_setv[] = { + "WLDS", NULL, NULL, NULL, + "CAMS", NULL, NULL, NULL, + "SDSP", "PBLS", "HDPS", NULL, + "CFVS", NULL, NULL, NULL, + "USBG", NULL, NULL, "MODS", + "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 + */ +struct eeepc_hotk { + struct acpi_device *device; /* the device we are in */ + acpi_handle handle; /* the handle of the hotk device */ + u32 cm_supported; /* the control methods supported + by this BIOS */ + uint init_flag; /* Init flags */ + u16 event_count[128]; /* count for each event */ +}; + +/* The actual device the driver binds to */ +static struct eeepc_hotk *ehotk; + +/* Platform device/driver */ +static struct platform_driver platform_driver = { + .driver = { + .name = EEEPC_HOTK_FILE, + .owner = THIS_MODULE, + } +}; + +static struct platform_device *platform_device; + +/* + * The hotkey driver declaration + */ +static int eeepc_hotk_add(struct acpi_device *device); +static int eeepc_hotk_remove(struct acpi_device *device, int type); + +static const struct acpi_device_id eeepc_device_ids[] = { + {EEEPC_HOTK_HID, 0}, + {"", 0}, +}; +MODULE_DEVICE_TABLE(acpi, eeepc_device_ids); + +static struct acpi_driver eeepc_hotk_driver = { + .name = EEEPC_HOTK_NAME, + .class = EEEPC_HOTK_CLASS, + .ids = eeepc_device_ids, + .ops = { + .add = eeepc_hotk_add, + .remove = eeepc_hotk_remove, + }, +}; + +/* 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"); + +/* + * ACPI Helpers + */ +static int write_acpi_int(acpi_handle handle, const char *method, int val, + struct acpi_buffer *output) +{ + struct acpi_object_list params; + union acpi_object in_obj; + acpi_status status; + + params.count = 1; + params.pointer = &in_obj; + in_obj.type = ACPI_TYPE_INTEGER; + in_obj.integer.value = val; + + status = acpi_evaluate_object(handle, (char *)method, ¶ms, output); + return (status == AE_OK ? 0 : -1); +} + +static int read_acpi_int(acpi_handle handle, const char *method, int *val) +{ + acpi_status status; + ulong result; + + status = acpi_evaluate_integer(handle, (char *)method, NULL, &result); + if (ACPI_FAILURE(status)) { + *val = -1; + return -1; + } else { + *val = result; + return 0; + } +} + +static int set_acpi(int cm, int value) +{ + if (ehotk->cm_supported & (0x1 << cm)) { + const char *method = cm_setv[cm]; + if (method == NULL) + return -ENODEV; + if (write_acpi_int(ehotk->handle, method, value, NULL)) + printk(EEEPC_WARNING "Error writing %s\n", method); + } + return 0; +} + +static int get_acpi(int cm) +{ + int value = -1; + if ((ehotk->cm_supported & (0x1 << cm))) { + const char *method = cm_getv[cm]; + if (method == NULL) + return -ENODEV; + if (read_acpi_int(ehotk->handle, method, &value)) + printk(EEEPC_WARNING "Error reading %s\n", method); + } + 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 int parse_arg(const char *buf, unsigned long count, int *val) +{ + if (!count) + return 0; + if (sscanf(buf, "%i", val) != 1) + return -EINVAL; + return count; +} + +static ssize_t store_sys_acpi(int cm, const char *buf, size_t count) +{ + int rv, value; + + rv = parse_arg(buf, count, &value); + if (rv > 0) + set_acpi(cm, value); + return rv; +} + +static ssize_t show_sys_acpi(int cm, char *buf) +{ + return sprintf(buf, "%d\n", get_acpi(cm)); +} + +#define EEEPC_CREATE_DEVICE_ATTR(_name, _cm) \ + static ssize_t show_##_name(struct device *dev, \ + struct device_attribute *attr, \ + char *buf) \ + { \ + return show_sys_acpi(_cm, buf); \ + } \ + static ssize_t store_##_name(struct device *dev, \ + struct device_attribute *attr, \ + const char *buf, size_t count) \ + { \ + return store_sys_acpi(_cm, buf, count); \ + } \ + static struct device_attribute dev_attr_##_name = { \ + .attr = { \ + .name = __stringify(_name), \ + .mode = 0644 }, \ + .show = show_##_name, \ + .store = store_##_name, \ + } + +EEEPC_CREATE_DEVICE_ATTR(camera, CM_ASL_CAMERA); +EEEPC_CREATE_DEVICE_ATTR(cardr, CM_ASL_CARDREADER); +EEEPC_CREATE_DEVICE_ATTR(disp, CM_ASL_DISPLAYSWITCH); +EEEPC_CREATE_DEVICE_ATTR(wlan, CM_ASL_WLAN); + +static struct attribute *platform_attributes[] = { + &dev_attr_camera.attr, + &dev_attr_cardr.attr, + &dev_attr_disp.attr, + &dev_attr_wlan.attr, + NULL +}; + +static struct attribute_group platform_attribute_group = { + .attrs = platform_attributes +}; + +/* + * Hotkey functions + */ +static int eeepc_hotk_check(void) +{ + struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; + int result; + + result = acpi_bus_get_status(ehotk->device); + if (result) + return result; + if (ehotk->device->status.present) { + if (write_acpi_int(ehotk->handle, "INIT", ehotk->init_flag, + &buffer)) { + printk(EEEPC_ERR "Hotkey initialization failed\n"); + return -ENODEV; + } else { + printk(EEEPC_NOTICE "Hotkey init flags 0x%x\n", + ehotk->init_flag); + } + /* get control methods supported */ + if (read_acpi_int(ehotk->handle, "CMSG" + , &ehotk->cm_supported)) { + printk(EEEPC_ERR + "Get control methods supported failed\n"); + return -ENODEV; + } else { + printk(EEEPC_INFO + "Get control methods supported: 0x%x\n", + ehotk->cm_supported); + } + } else { + printk(EEEPC_ERR "Hotkey device not present, aborting\n"); + return -EINVAL; + } + return 0; +} + +static void notify_wlan(u32 *event) +{ + /* if DISABLE_ASL_WLAN is set, the notify code for fn+f2 + will always be 0x10 */ + if (ehotk->cm_supported & (0x1 << CM_ASL_WLAN)) { + const char *method = cm_getv[CM_ASL_WLAN]; + int value; + if (read_acpi_int(ehotk->handle, method, &value)) + printk(EEEPC_WARNING "Error reading %s\n", + method); + else if (value == 1) + *event = 0x11; + } +} + +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]++); +} + +static int eeepc_hotk_add(struct acpi_device *device) +{ + acpi_status status = AE_OK; + int result; + + if (!device) + return -EINVAL; + printk(EEEPC_NOTICE EEEPC_HOTK_NAME "\n"); + ehotk = kzalloc(sizeof(struct eeepc_hotk), GFP_KERNEL); + if (!ehotk) + return -ENOMEM; + ehotk->init_flag = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH; + 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; + ehotk->device = device; + result = eeepc_hotk_check(); + if (result) + goto end; + status = acpi_install_notify_handler(ehotk->handle, ACPI_SYSTEM_NOTIFY, + eeepc_hotk_notify, ehotk); + if (ACPI_FAILURE(status)) + printk(EEEPC_ERR "Error installing notify handler\n"); + end: + if (result) { + kfree(ehotk); + ehotk = NULL; + } + return result; +} + +static int eeepc_hotk_remove(struct acpi_device *device, int type) +{ + acpi_status status = 0; + + if (!device || !acpi_driver_data(device)) + return -EINVAL; + status = acpi_remove_notify_handler(ehotk->handle, ACPI_SYSTEM_NOTIFY, + eeepc_hotk_notify); + if (ACPI_FAILURE(status)) + printk(EEEPC_ERR "Error removing notify handler\n"); + kfree(ehotk); + return 0; +} + +/* + * Hwmon + */ +static int eeepc_get_fan_pwm(void) +{ + int value = 0; + + read_acpi_int(NULL, EEEPC_EC_FAN_PWM, &value); + return (value); +} + +static void eeepc_set_fan_pwm(int value) +{ + value = SENSORS_LIMIT(value, 0, 100); + 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(fan1_pwm, 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 struct attribute *hwmon_attributes[] = { + &sensor_dev_attr_fan1_pwm.dev_attr.attr, + &sensor_dev_attr_fan1_input.dev_attr.attr, + &sensor_dev_attr_pwm1_enable.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 ; + hwmon_device_unregister(hwmon); + sysfs_remove_group(&hwmon->kobj, + &hwmon_attribute_group); + 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_device_unregister(platform_device); + 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; + int result; + + if (acpi_disabled) + return -ENODEV; + result = acpi_bus_register_driver(&eeepc_hotk_driver); + if (result < 0) + return result; + if (!ehotk) { + acpi_bus_unregister_driver(&eeepc_hotk_driver); + 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) + goto fail_platform_driver; + platform_device = platform_device_alloc(EEEPC_HOTK_FILE, -1); + if (!platform_device) { + result = -ENOMEM; + goto fail_platform_device1; + } + result = platform_device_add(platform_device); + if (result) + goto fail_platform_device2; + result = sysfs_create_group(&platform_device->dev.kobj, + &platform_attribute_group); + if (result) + goto fail_sysfs; + return 0; +fail_sysfs: + platform_device_del(platform_device); +fail_platform_device2: + platform_device_put(platform_device); +fail_platform_device1: + platform_driver_unregister(&platform_driver); +fail_platform_driver: + eeepc_hwmon_exit(); +fail_hwmon: + eeepc_backlight_exit(); +fail_backlight: + return result; +} + +module_init(eeepc_laptop_init); +module_exit(eeepc_laptop_exit); diff --git a/drivers/misc/intel_menlow.c b/drivers/misc/intel_menlow.c index 0c0bb3093e0..5bb8816c912 100644 --- a/drivers/misc/intel_menlow.c +++ b/drivers/misc/intel_menlow.c @@ -175,28 +175,18 @@ static int intel_menlow_memory_add(struct acpi_device *device) goto end; } - if (cdev) { - acpi_driver_data(device) = cdev; - result = sysfs_create_link(&device->dev.kobj, - &cdev->device.kobj, "thermal_cooling"); - if (result) - goto unregister; - - result = sysfs_create_link(&cdev->device.kobj, - &device->dev.kobj, "device"); - if (result) { - sysfs_remove_link(&device->dev.kobj, "thermal_cooling"); - goto unregister; - } - } + acpi_driver_data(device) = cdev; + result = sysfs_create_link(&device->dev.kobj, + &cdev->device.kobj, "thermal_cooling"); + if (result) + printk(KERN_ERR PREFIX "Create sysfs link\n"); + result = sysfs_create_link(&cdev->device.kobj, + &device->dev.kobj, "device"); + if (result) + printk(KERN_ERR PREFIX "Create sysfs link\n"); end: return result; - - unregister: - thermal_cooling_device_unregister(cdev); - return result; - } static int intel_menlow_memory_remove(struct acpi_device *device, int type) diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c index 6cb781262f9..3f28f6eabdb 100644 --- a/drivers/misc/thinkpad_acpi.c +++ b/drivers/misc/thinkpad_acpi.c @@ -21,7 +21,7 @@ * 02110-1301, USA. */ -#define TPACPI_VERSION "0.19" +#define TPACPI_VERSION "0.20" #define TPACPI_SYSFS_VERSION 0x020200 /* @@ -67,6 +67,7 @@ #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <linux/input.h> +#include <linux/leds.h> #include <asm/uaccess.h> #include <linux/dmi.h> @@ -85,6 +86,8 @@ #define TP_CMOS_VOLUME_MUTE 2 #define TP_CMOS_BRIGHTNESS_UP 4 #define TP_CMOS_BRIGHTNESS_DOWN 5 +#define TP_CMOS_THINKLIGHT_ON 12 +#define TP_CMOS_THINKLIGHT_OFF 13 /* NVRAM Addresses */ enum tp_nvram_addr { @@ -133,8 +136,12 @@ enum { #define TPACPI_PROC_DIR "ibm" #define TPACPI_ACPI_EVENT_PREFIX "ibm" #define TPACPI_DRVR_NAME TPACPI_FILE +#define TPACPI_DRVR_SHORTNAME "tpacpi" #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" +#define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd" +#define TPACPI_WORKQUEUE_NAME "ktpacpid" + #define TPACPI_MAX_ACPI_ARGS 3 /* Debugging */ @@ -225,6 +232,7 @@ static struct { u32 light:1; u32 light_status:1; u32 bright_16levels:1; + u32 bright_acpimode:1; u32 wan:1; u32 fan_ctrl_status_undef:1; u32 input_device_registered:1; @@ -236,6 +244,11 @@ static struct { u32 hotkey_poll_active:1; } tp_features; +static struct { + u16 hotkey_mask_ff:1; + u16 bright_cmos_ec_unsync:1; +} tp_warned; + struct thinkpad_id_data { unsigned int vendor; /* ThinkPad vendor: * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ @@ -246,7 +259,8 @@ struct thinkpad_id_data { u16 bios_model; /* Big Endian, TP-1Y = 0x5931, 0 = unknown */ u16 ec_model; - char *model_str; + char *model_str; /* ThinkPad T43 */ + char *nummodel_str; /* 9384A9C for a 9384-A9C model */ }; static struct thinkpad_id_data thinkpad_id; @@ -259,6 +273,16 @@ static enum { static int experimental; static u32 dbg_level; +static struct workqueue_struct *tpacpi_wq; + +/* Special LED class that can defer work */ +struct tpacpi_led_classdev { + struct led_classdev led_classdev; + struct work_struct work; + enum led_brightness new_brightness; + unsigned int led; +}; + /**************************************************************************** **************************************************************************** * @@ -807,6 +831,80 @@ static int parse_strtoul(const char *buf, return 0; } +static int __init tpacpi_query_bcl_levels(acpi_handle handle) +{ + struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; + union acpi_object *obj; + int rc; + + if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) { + obj = (union acpi_object *)buffer.pointer; + if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { + printk(TPACPI_ERR "Unknown _BCL data, " + "please report this to %s\n", TPACPI_MAIL); + rc = 0; + } else { + rc = obj->package.count; + } + } else { + return 0; + } + + kfree(buffer.pointer); + return rc; +} + +static acpi_status __init tpacpi_acpi_walk_find_bcl(acpi_handle handle, + u32 lvl, void *context, void **rv) +{ + char name[ACPI_PATH_SEGMENT_LENGTH]; + struct acpi_buffer buffer = { sizeof(name), &name }; + + if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) && + !strncmp("_BCL", name, sizeof(name) - 1)) { + BUG_ON(!rv || !*rv); + **(int **)rv = tpacpi_query_bcl_levels(handle); + return AE_CTRL_TERMINATE; + } else { + return AE_OK; + } +} + +/* + * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map + */ +static int __init tpacpi_check_std_acpi_brightness_support(void) +{ + int status; + int bcl_levels = 0; + void *bcl_ptr = &bcl_levels; + + if (!vid_handle) { + TPACPI_ACPIHANDLE_INIT(vid); + } + if (!vid_handle) + return 0; + + /* + * Search for a _BCL method, and execute it. This is safe on all + * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista + * BIOS in ACPI backlight control mode. We do NOT have to care + * about calling the _BCL method in an enabled video device, any + * will do for our purposes. + */ + + status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3, + tpacpi_acpi_walk_find_bcl, NULL, + &bcl_ptr); + + if (ACPI_SUCCESS(status) && bcl_levels > 2) { + tp_features.bright_acpimode = 1; + return (bcl_levels - 2); + } + + return 0; +} + /************************************************************************* * thinkpad-acpi driver attributes */ @@ -909,12 +1007,14 @@ static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm) thinkpad_id.ec_version_str : "unknown"); if (thinkpad_id.vendor && thinkpad_id.model_str) - printk(TPACPI_INFO "%s %s\n", + printk(TPACPI_INFO "%s %s, model %s\n", (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? "IBM" : ((thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) ? "Lenovo" : "Unknown vendor"), - thinkpad_id.model_str); + thinkpad_id.model_str, + (thinkpad_id.nummodel_str) ? + thinkpad_id.nummodel_str : "unknown"); return 0; } @@ -1107,6 +1207,19 @@ static int hotkey_mask_set(u32 mask) int rc = 0; if (tp_features.hotkey_mask) { + if (!tp_warned.hotkey_mask_ff && + (mask == 0xffff || mask == 0xffffff || + mask == 0xffffffff)) { + tp_warned.hotkey_mask_ff = 1; + printk(TPACPI_NOTICE + "setting the hotkey mask to 0x%08x is likely " + "not the best way to go about it\n", mask); + printk(TPACPI_NOTICE + "please consider using the driver defaults, " + "and refer to up-to-date thinkpad-acpi " + "documentation\n"); + } + HOTKEY_CONFIG_CRITICAL_START for (i = 0; i < 32; i++) { u32 m = 1 << i; @@ -1427,8 +1540,7 @@ static void hotkey_poll_setup(int may_warn) (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) { if (!tpacpi_hotkey_task) { tpacpi_hotkey_task = kthread_run(hotkey_kthread, - NULL, - TPACPI_FILE "d"); + NULL, TPACPI_NVRAM_KTHREAD_NAME); if (IS_ERR(tpacpi_hotkey_task)) { tpacpi_hotkey_task = NULL; printk(TPACPI_ERR @@ -1887,6 +1999,9 @@ static int __init hotkey_init(struct ibm_init_struct *iibm) KEY_UNKNOWN, /* 0x0D: FN+INSERT */ KEY_UNKNOWN, /* 0x0E: FN+DELETE */ + /* These either have to go through ACPI video, or + * act like in the IBM ThinkPads, so don't ever + * enable them by default */ KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ KEY_RESERVED, /* 0x10: FN+END (brightness down) */ @@ -2091,6 +2206,32 @@ static int __init hotkey_init(struct ibm_init_struct *iibm) set_bit(SW_TABLET_MODE, tpacpi_inputdev->swbit); } + /* Do not issue duplicate brightness change events to + * userspace */ + if (!tp_features.bright_acpimode) + /* update bright_acpimode... */ + tpacpi_check_std_acpi_brightness_support(); + + if (tp_features.bright_acpimode) { + printk(TPACPI_INFO + "This ThinkPad has standard ACPI backlight " + "brightness control, supported by the ACPI " + "video driver\n"); + printk(TPACPI_NOTICE + "Disabling thinkpad-acpi brightness events " + "by default...\n"); + + /* The hotkey_reserved_mask change below is not + * necessary while the keys are at KEY_RESERVED in the + * default map, but better safe than sorry, leave it + * here as a marker of what we have to do, especially + * when we finally become able to set this at runtime + * on response to X.org requests */ + hotkey_reserved_mask |= + (1 << TP_ACPI_HOTKEYSCAN_FNHOME) + | (1 << TP_ACPI_HOTKEYSCAN_FNEND); + } + dbg_printk(TPACPI_DBG_INIT, "enabling hot key handling\n"); res = hotkey_status_set(1); @@ -3110,13 +3251,82 @@ static struct ibm_struct video_driver_data = { TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ +static int light_get_status(void) +{ + int status = 0; + + if (tp_features.light_status) { + if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) + return -EIO; + return (!!status); + } + + return -ENXIO; +} + +static int light_set_status(int status) +{ + int rc; + + if (tp_features.light) { + if (cmos_handle) { + rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", + (status)? + TP_CMOS_THINKLIGHT_ON : + TP_CMOS_THINKLIGHT_OFF); + } else { + rc = acpi_evalf(lght_handle, NULL, NULL, "vd", + (status)? 1 : 0); + } + return (rc)? 0 : -EIO; + } + + return -ENXIO; +} + +static void light_set_status_worker(struct work_struct *work) +{ + struct tpacpi_led_classdev *data = + container_of(work, struct tpacpi_led_classdev, work); + + if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING)) + light_set_status((data->new_brightness != LED_OFF)); +} + +static void light_sysfs_set(struct led_classdev *led_cdev, + enum led_brightness brightness) +{ + struct tpacpi_led_classdev *data = + container_of(led_cdev, + struct tpacpi_led_classdev, + led_classdev); + data->new_brightness = brightness; + queue_work(tpacpi_wq, &data->work); +} + +static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) +{ + return (light_get_status() == 1)? LED_FULL : LED_OFF; +} + +static struct tpacpi_led_classdev tpacpi_led_thinklight = { + .led_classdev = { + .name = "tpacpi::thinklight", + .brightness_set = &light_sysfs_set, + .brightness_get = &light_sysfs_get, + } +}; + static int __init light_init(struct ibm_init_struct *iibm) { + int rc = 0; + vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); TPACPI_ACPIHANDLE_INIT(ledb); TPACPI_ACPIHANDLE_INIT(lght); TPACPI_ACPIHANDLE_INIT(cmos); + INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker); /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; @@ -3130,13 +3340,31 @@ static int __init light_init(struct ibm_init_struct *iibm) vdbg_printk(TPACPI_DBG_INIT, "light is %s\n", str_supported(tp_features.light)); - return (tp_features.light)? 0 : 1; + if (tp_features.light) { + rc = led_classdev_register(&tpacpi_pdev->dev, + &tpacpi_led_thinklight.led_classdev); + } + + if (rc < 0) { + tp_features.light = 0; + tp_features.light_status = 0; + } else { + rc = (tp_features.light)? 0 : 1; + } + return rc; +} + +static void light_exit(void) +{ + led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); |