/* * eeepc-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. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define EEEPC_LAPTOP_VERSION "0.1" #define EEEPC_LAPTOP_NAME "Eee PC Hotkey Driver" #define EEEPC_LAPTOP_FILE "eeepc" #define EEEPC_ACPI_CLASS "hotkey" #define EEEPC_ACPI_DEVICE_NAME "Hotkey" #define EEEPC_ACPI_HID "ASUS010" MODULE_AUTHOR("Corentin Chary, Eric Cooper"); MODULE_DESCRIPTION(EEEPC_LAPTOP_NAME); MODULE_LICENSE("GPL"); /* * Definitions for Asus EeePC */ #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, DISABLE_ASL_3G = 0x0200, DISABLE_ASL_WIMAX = 0x0400, DISABLE_ASL_HWCF = 0x0800 }; 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_3G, CM_ASL_WIMAX, CM_ASL_HWCF, CM_ASL_LID, CM_ASL_TYPE, CM_ASL_PANELPOWER, /*P901*/ CM_ASL_TPD }; static const char *cm_getv[] = { "WLDG", "BTHG", NULL, NULL, "CAMG", NULL, NULL, NULL, NULL, "PBLG", NULL, NULL, "CFVG", NULL, NULL, NULL, "USBG", NULL, NULL, "MODG", "CRDG", "M3GG", "WIMG", "HWCF", "LIDG", "TYPE", "PBPG", "TPDG" }; static const char *cm_setv[] = { "WLDS", "BTHS", NULL, NULL, "CAMS", NULL, NULL, NULL, "SDSP", "PBLS", "HDPS", NULL, "CFVS", NULL, NULL, NULL, "USBG", NULL, NULL, "MODS", "CRDS", "M3GS", "WIMS", NULL, NULL, NULL, "PBPS", "TPDS" }; struct key_entry { char type; u8 code; u16 keycode; }; enum { KE_KEY, KE_END }; static const struct key_entry eeepc_keymap[] = { /* Sleep already handled via generic ACPI code */ {KE_KEY, 0x10, KEY_WLAN }, {KE_KEY, 0x11, KEY_WLAN }, {KE_KEY, 0x12, KEY_PROG1 }, {KE_KEY, 0x13, KEY_MUTE }, {KE_KEY, 0x14, KEY_VOLUMEDOWN }, {KE_KEY, 0x15, KEY_VOLUMEUP }, {KE_KEY, 0x16, KEY_DISPLAY_OFF }, {KE_KEY, 0x1a, KEY_COFFEE }, {KE_KEY, 0x1b, KEY_ZOOM }, {KE_KEY, 0x1c, KEY_PROG2 }, {KE_KEY, 0x1d, KEY_PROG3 }, {KE_KEY, NOTIFY_BRN_MIN, KEY_BRIGHTNESSDOWN }, {KE_KEY, NOTIFY_BRN_MAX, KEY_BRIGHTNESSUP }, {KE_KEY, 0x30, KEY_SWITCHVIDEOMODE }, {KE_KEY, 0x31, KEY_SWITCHVIDEOMODE }, {KE_KEY, 0x32, KEY_SWITCHVIDEOMODE }, {KE_KEY, 0x37, KEY_F13 }, /* Disable Touchpad */ {KE_KEY, 0x38, KEY_F14 }, {KE_END, 0}, }; /* * This is the main structure, we can use it to store useful information */ struct eeepc_laptop { acpi_handle handle; /* the handle of the acpi device */ u32 cm_supported; /* the control methods supported by this BIOS */ u16 event_count[128]; /* count for each event */ struct platform_device *platform_device; struct device *hwmon_device; struct backlight_device *backlight_device; struct input_dev *inputdev; struct key_entry *keymap; struct rfkill *wlan_rfkill; struct rfkill *bluetooth_rfkill; struct rfkill *wwan3g_rfkill; struct rfkill *wimax_rfkill; struct hotplug_slot *hotplug_slot; struct mutex hotplug_lock; struct led_classdev tpd_led; int tpd_led_wk; struct workqueue_struct *led_workqueue; struct work_struct tpd_led_work; }; /* * ACPI Helpers */ static int write_acpi_int(acpi_handle handle, const char *method, int val) { 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, NULL); return (status == AE_OK ? 0 : -1); } static int read_acpi_int(acpi_handle handle, const char *method, int *val) { acpi_status status; unsigned long long 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(struct eeepc_laptop *eeepc, int cm, int value) { const char *method = cm_setv[cm]; if (method == NULL) return -ENODEV; if ((eeepc->cm_supported & (0x1 << cm)) == 0) return -ENODEV; if (write_acpi_int(eeepc->handle, method, value)) pr_warning("Error writing %s\n", method); return 0; } static int get_acpi(struct eeepc_laptop *eeepc, int cm) { const char *method = cm_getv[cm]; int value; if (method == NULL) return -ENODEV; if ((eeepc->cm_supported & (0x1 << cm)) == 0) return -ENODEV; if (read_acpi_int(eeepc->handle, method, &value)) pr_warning("Error reading %s\n", method); return value; } static int acpi_setter_handle(struct eeepc_laptop *eeepc, int cm, acpi_handle *handle) { const char *method = cm_setv[cm]; acpi_status status; if (method == NULL) return -ENODEV; if ((eeepc->cm_supported & (0x1 << cm)) == 0) return -ENODEV; status = acpi_get_handle(eeepc->handle, (char *)method, handle); if (status != AE_OK) { pr_warning("Error finding %s\n", method); return -ENODEV; } return 0; } /* * 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(struct device *dev, int cm, const char *buf, size_t count) { struct eeepc_laptop *eeepc = dev_get_drvdata(dev); int rv, value; rv = parse_arg(buf, count, &value); if (rv > 0) value = set_acpi(eeepc, cm, value); if (value < 0) return -EIO; return rv; } static ssize_t show_sys_acpi(struct device *dev, int cm, char *buf) { struct eeepc_laptop *eeepc = dev_get_drvdata(dev); int value = get_acpi(eeepc, cm); if (value < 0) return -EIO; return sprintf(buf, "%d\n", value); } #define EEEPC_CREATE_DEVICE_ATTR(_name, _mode, _cm) \ static ssize_t show_##_name(struct device *dev, \ struct device_attribute *attr, \ char *buf) \ { \ return show_sys_acpi(dev, _cm, buf); \ } \ static ssize_t store_##_name(struct device *dev, \ struct device_attribute *attr, \ const char *buf, size_t count) \ { \ return store_sys_acpi(dev, _cm, buf, count); \ } \ static struct device_attribute dev_attr_##_name = { \ .attr = { \ .name = __stringify(_name), \ .mode = _mode }, \ .show = show_##_name, \ .store = store_##_name, \ } EEEPC_CREATE_DEVICE_ATTR(camera, 0644, CM_ASL_CAMERA); EEEPC_CREATE_DEVICE_ATTR(cardr, 0644, CM_ASL_CARDREADER); EEEPC_CREATE_DEVICE_ATTR(disp, 0200, CM_ASL_DISPLAYSWITCH); struct eeepc_cpufv { int num; int cur; }; static int get_cpufv(struct eeepc_laptop *eeepc, struct eeepc_cpufv *c) { c->cur = get_acpi(eeepc, CM_ASL_CPUFV); c->num = (c->cur >> 8) & 0xff; c->cur &= 0xff; if (c->cur < 0 || c->num <= 0 || c->num > 12) return -ENODEV; return 0; } static ssize_t show_available_cpufv(struct device *dev, struct device_attribute *attr, char *buf) { struct eeepc_laptop *eeepc = dev_get_drvdata(dev); struct eeepc_cpufv c; int i; ssize_t len = 0; if (get_cpufv(eeepc, &c)) return -ENODEV; for (i = 0; i < c.num; i++) len += sprintf(buf + len, "%d ", i); len += sprintf(buf + len, "\n"); return len; } static ssize_t show_cpufv(struct device *dev, struct device_attribute *attr, char *buf) { struct eeepc_laptop *eeepc = dev_get_drvdata(dev); struct eeepc_cpufv c; if (get_cpufv(eeepc, &c)) return -ENODEV; return sprintf(buf, "%#x\n", (c.num << 8) | c.cur); } static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct eeepc_laptop *eeepc = dev_get_drvdata(dev); struct eeepc_cpufv c; int rv, value; if (get_cpufv(eeepc, &c)) return -ENODEV; rv = parse_arg(buf, count, &value); if (rv < 0) return rv; if (!rv || value < 0 || value >= c.num) return -EINVAL; set_acpi(eeepc, CM_ASL_CPUFV, value); return rv; } static struct device_attribute dev_attr_cpufv = { .attr = { .name = "cpufv", .mode = 0644 }, .show = show_cpufv, .store = store_cpufv }; static struct device_attribute dev_attr_available_cpufv = { .attr = { .name = "available_cpufv", .mode = 0444 }, .show = show_available_cpufv }; static struct attribute *platform_attributes[] = { &dev_attr_camera.attr, &dev_attr_cardr.attr, &dev_attr_disp.attr, &dev_attr_cpufv.attr, &dev_attr_available_cpufv.attr, NULL }; static struct attribute_group platform_attribute_group = { .attrs = platform_attributes }; static int eeepc_platform_init(struct eeepc_laptop *eeepc) { int result; eeepc->platform_device = platform_device_alloc(EEEPC_LAPTOP_FILE, -1); if (!eeepc->platform_device) return -ENOMEM; platform_set_drvdata(eeepc->platform_device, eeepc); result = platform_device_add(eeepc->platform_device); if (result) goto fail_platform_device; result = sysfs_create_group(&eeepc->platform_device->dev.kobj, &platform_attribute_group); if (result) goto fail_sysfs; return 0; fail_sysfs: platform_device_del(eeepc->platform_device); fail_platform_device: platform_device_put(eeepc->platform_device); return result; } static void eeepc_platform_exit(struct eeepc_laptop *eeepc) { sysfs_remove_group(&eeepc->platform_device->dev.kobj, &platform_attribute_group); platform_device_unregister(eeepc->platform_device); } /* * LEDs */ /* * These functions actually update the LED's, and are called from a * workqueue. By doing this as separate work rather than when the LED * subsystem asks, we avoid messing with the Asus ACPI stuff during a * potentially bad time, such as a timer interrupt. */ static void tpd_led_update(struct work_struct *work) { struct eeepc_laptop *eeepc; eeepc = container_of(work, struct eeepc_laptop, tpd_led_work); set_acpi(eeepc, CM_ASL_TPD, eeepc->tpd_led_wk); } static void tpd_led_set(struct led_classdev *led_cdev, enum led_brightness value) { struct eeepc_laptop *eeepc; eeepc = container_of(led_cdev, struct eeepc_laptop, tpd_led); eeepc->tpd_led_wk = (value > 0) ? 1 : 0; queue_work(eeepc->led_workqueue, &eeepc->tpd_led_work); } static int eeepc_led_init(struct eeepc_laptop *eeepc) { int rv; if (get_acpi(eeepc, CM_ASL_TPD) == -ENODEV) return 0; eeepc->led_workqueue = create_singlethread_workqueue("led_workqueue"); if (!eeepc->led_workqueue) return -ENOMEM; INIT_WORK(&eeepc->tpd_led_work, tpd_led_update); eeepc->tpd_led.name = "eeepc::touchpad"; eeepc->tpd_led.brightness_set = tpd_led_set; eeepc->tpd_led.max_brightness = 1; rv = led_classdev_register(&eeepc->platform_device->dev, &eeepc->tpd_led); if (rv) { destroy_workqueue(eeepc->led_workqueue); return rv; } return 0; } static void eeepc_led_exit(struct eeepc_laptop *eeepc) { if (eeepc->tpd_led.dev) led_classdev_unregister(&eeepc->tpd_led); if (eeepc->led_workqueue) destroy_workqueue(eeepc->led_workqueue); } /* * PCI hotplug (for wlan rfkill) */ static bool eeepc_wlan_rfkill_blocked(struct eeepc_laptop *eeepc) { if (get_acpi(eeepc, CM_ASL_WLAN) == 1) return false; return true; } static void eeepc_rfkill_hotplug(struct eeepc_laptop *eeepc) { struct pci_dev *dev; struct pci_bus *bus; bool blocked = eeepc_wlan_rfkill_blocked(eeepc); if (eeepc->wlan_rfkill) rfkill_set_sw_state(eeepc->wlan_rfkill, blocked); mutex_lock(&eeepc->hotplug_lock); if (eeepc->hotplug_slot) { bus = pci_find_bus(0, 1); if (!bus) { pr_warning("Unable to find PCI bus 1?\n"); goto out_unlock; } if (!blocked) { dev = pci_get_slot(bus, 0); if (dev) { /* Device already present */ pci_dev_put(dev); goto out_unlock; } dev = pci_scan_single_device(bus, 0); if (dev) { pci_bus_assign_resources(bus); if (pci_bus_add_device(dev)) pr_err("Unable to hotplug wifi\n"); } } else { dev = pci_get_slot(bus, 0); if (dev) { pci_remove_bus_device(dev); pci_dev_put(dev); } } } out_unlock: mutex_unlock(&eeepc->hotplug_lock); } static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data) { struct eeepc_laptop *eeepc = data; if (event != ACPI_NOTIFY_BUS_CHECK) return; eeepc_rfkill_hotplug(eeepc); } static int eeepc_register_rfkill_notifier(struct eeepc_laptop *eeepc, char *node) { acpi_status status; acpi_handle handle; status = acpi_get_handle(NULL, node, &handle); if (ACPI_SUCCESS(status)) { status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY, eeepc_rfkill_notify, eeepc); if (ACPI_FAILURE(status)) pr_warning("Failed to register notify on %s\n", node); } else return -ENODEV; return 0; } static void eeepc_unregister_rfkill_notifier(struct eeepc_laptop *eeepc, char *node) { acpi_status status = AE_OK; acpi_handle handle; status = acpi_get_handle(NULL, node, &handle); if (ACPI_SUCCESS(status)) { status = acpi_remove_notify_handler(handle, ACPI_SYSTEM_NOTIFY, eeepc_rfkill_notify); if (ACPI_FAILURE(status)) pr_err("Error removing rfkill notify handler %s\n", node); } } static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value) { struct eeepc_laptop *eeepc = hotplug_slot->private; int val = get_acpi(eeepc, CM_ASL_WLAN); if (val == 1 || val == 0) *value = val; else return -EINVAL; return 0; } static void eeepc_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot) { kfree(hotplug_slot->info); kfree(hotplug_slot); } static struct hotplug_slot_ops eeepc_hotplug_slot_ops = { .owner = THIS_MODULE, .get_adapter_status = eeepc_get_adapter_status, .get_power_status = eeepc_get_adapter_status, }; static int eeepc_setup_pci_hotplug(struct eeepc_laptop *eeepc) { int ret = -ENOMEM; struct pci_bus *bus = pci_find_bus(0, 1); if (!bus) { pr_err("Unable to find wifi PCI bus\n"); return -ENODEV; } eeepc->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL); if (!eeepc->hotplug_slot) goto error_slot; eeepc->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL); if (!eeepc->hotplug_slot->info) goto error_info; eeepc->hotplug_slot->private = eeepc; eeepc->hotplug_slot->release = &eeepc_cleanup_pci_hotplug; eeepc->hotplug_slot->ops = &eeepc_hotplug_slot_ops; eeepc_get_adapter_status(eeepc->hotplug_slot, &eeepc->hotplug_slot->info->adapter_status); ret = pci_hp_register(eeepc->hotplug_slot, bus, 0, "eeepc-wifi"); if (ret) { pr_err("Unable to register hotplug slot - %d\n", ret); goto error_register; } return 0; error_register: kfree(eeepc->hotplug_slot->info); error_info: kfree(eeepc->hotplug_slot); eeepc->hotplug_slot = NULL; error_slot: return ret; } /* * Rfkill devices */ static int eeepc_rfkill_set(void *data, bool blocked) { acpi_handle handle = data; return write_acpi_int(handle, NULL, !blocked); } static const struct rfkill_ops eeepc_rfkill_ops = { .set_block = eeepc_rfkill_set, }; static int eeepc_new_rfkill(struct eeepc_laptop *eeepc, struct rfkill **rfkill, const char *name, enum rfkill_type type, int cm) { acpi_handle handle; int result; result = acpi_setter_handle(eeepc, cm, &handle); if (result < 0) return result; *rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type, &eeepc_rfkill_ops, handle); if (!*rfkill) return -EINVAL; rfkill_init_sw_state(*rfkill, get_acpi(eeepc, cm) != 1); result = rfkill_register(*rfkill); if (result) { rfkill_destroy(*rfkill); *rfkill = NULL; return result; } return 0; } static void eeepc_rfkill_exit(struct eeepc_laptop *eeepc) { eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5"); eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6"); eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7"); if (eeepc->wlan_rfkill) { rfkill_unregister(eeepc->wlan_rfkill); rfkill_destroy(eeepc->wlan_rfkill); eeepc->wlan_rfkill = NULL; } /* * Refresh pci hotplug in case the rfkill state was changed after * eeepc_unregister_rfkill_notifier() */ eeepc_rfkill_hotplug(eeepc); if (eeepc->hotplug_slot) pci_hp_deregister(eeepc->hotplug_slot); if (eeepc->bluetooth_rfkill) { rfkill_unregister(eeepc->bluetooth_rfkill); rfkill_destroy(eeepc->bluetooth_rfkill); eeepc->bluetooth_rfkill = NULL; } if (eeepc->wwan3g_rfkill) { rfkill_unregister(eeepc->wwan3g_rfkill); rfkill_destroy(eeepc->wwan3g_rfkill); eeepc->wwan3g_rfkill = NULL; } if (eeepc->wimax_rfkill) { rfkill_unregister(eeepc->wimax_rfkill); rfkill_destroy(eeepc->wimax_rfkill); eeepc->wimax_rfkill = NULL; } } static int eeepc_rfkill_init(struct eeepc_laptop *eeepc) { int result = 0; mutex_init(&eeepc->hotplug_lock); result = eeepc_new_rfkill(eeepc, &eeepc->wlan_rfkill, "eeepc-wlan", RFKILL_TYPE_WLAN, CM_ASL_WLAN); if (result && result != -ENODEV) goto exit; result = eeepc_new_rfkill(eeepc, &eeepc->bluetooth_rfkill, "eeepc-bluetooth", RFKILL_TYPE_BLUETOOTH, CM_ASL_BLUETOOTH); if (result && result != -ENODEV) goto exit; result = eeepc_new_rfkill(eeepc, &eeepc->wwan3g_rfkill, "eeepc-wwan3g", RFKILL_TYPE_WWAN, CM_ASL_3G); if (result && result != -ENODEV) goto exit; result = eeepc_new_rfkill(eeepc, &eeepc->wimax_rfkill, "eeepc-wimax", RFKILL_TYPE_WIMAX, CM_ASL_WIMAX); if (result && result != -ENODEV) goto exit; result = eeepc_setup_pci_hotplug(eeepc); /* * If we get -EBUSY then something else is handling the PCI hotplug - * don't fail in this case */ if (result == -EBUSY) result = 0; eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5"); eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6"); eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7"); /* * Refresh pci hotplug in case the rfkill state was changed during * setup. */ eeepc_rfkill_hotplug(eeepc); exit: if (result && result != -ENODEV) eeepc_rfkill_exit(eeepc); return result; } /* * Platform driver - hibernate/resume callbacks */ static int eeepc_hotk_thaw(struct device *device) { struct eeepc_laptop *eeepc = dev_get_drvdata(device); if (eeepc->wlan_rfkill) { bool wlan; /* * Work around bios bug - acpi _PTS turns off the wireless led * during suspend. Normally it restores it on resume, but * we should kick it ourselves in case hibernation is aborted. */ wlan = get_acpi(eeepc, CM_ASL_WLAN); set_acpi(eeepc, CM_ASL_WLAN, wlan); } return 0; } static int eeepc_hotk_restore(struct device *device) { struct eeepc_laptop *eeepc = dev_get_drvdata(device); /* Refresh both wlan rfkill state and pci hotplug */ if (eeepc->wlan_rfkill) eeepc_rfkill_hotplug(eeepc); if (eeepc->bluetooth_rfkill) rfkill_set_sw_state(eeepc->bluetooth_rfkill, get_acpi(eeepc, CM_ASL_BLUETOOTH) != 1); if (eeepc->wwan3g_rfkill) rfkill_set_sw_state(eeepc->wwan3g_rfkill, get_acpi(eeepc, CM_ASL_3G) != 1); if (eeepc->wimax_rfkill) rfkill_set_sw_state(eeepc->wimax_rfkill, get_acpi(eeepc, CM_ASL_WIMAX) != 1); return 0; } static struct dev_pm_ops eeepc_pm_ops = { .thaw = eeepc_hotk_thaw, .restore = eeepc_hotk_restore, }; static struct platform_driver platform_driver = { .driver = { .name = EEEPC_LAPTOP_FILE, .owner = THIS_MODULE, .pm = &eeepc_pm_ops, } }; /* * Hwmon device */ #define EEEPC_EC_SC00 0x61 #define EEEPC_EC_FAN_PWM (EEEPC_EC_SC00 + 2) /* Fan PWM duty cycle (%) */ #define EEEPC_EC_FAN_HRPM (EEEPC_EC_SC00 + 5) /* High byte, fan speed (RPM) */ #define EEEPC_EC_FAN_LRPM (EEEPC_EC_SC00 + 6) /* Low byte, fan speed (RPM) */ #define EEEPC_EC_SFB0 0xD0 #define EEEPC_EC_FAN_CTRL (EEEPC_EC_SFB0 + 3) /* Byte containing SF25 */ static int eeepc_get_fan_pwm(void) { u8 value = 0; ec_read(EEEPC_EC_FAN_PWM, &value); return value * 255 / 100; } static void eeepc_set_fan_pwm(int value) { value = SENSORS_LIMIT(value, 0, 255); value = value * 100 / 255; ec_write(EEEPC_EC_FAN_PWM, value); } static int eeepc_get_fan_rpm(void) { u8 high = 0; u8 low = 0; ec_read(EEEPC_EC_FAN_HRPM, &high); ec_read(EEEPC_EC_FAN_LRPM, &low); return high << 8 | low; } static int eeepc_get_fan_ctrl(void) { u8 value = 0; ec_read(EEEPC_EC_FAN_CTRL, &value); if (value & 0x02) return 1; /* manual */ else return 2; /* automatic */ } static void eeepc_set_fan_ctrl(int manual) { u8 value = 0; ec_read(EEEPC_EC_FAN_CTRL, &value); if (manual == 1) value |= 0x02; else value &= ~0x02; ec_write(EEEPC_EC_FAN_CTRL, 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 }; static void eeepc_hwmon_exit(struct eeepc_laptop *eeepc) { 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 int eeepc_hwmon_init(struct eeepc_laptop *eeepc) { struct device *hwmon; int result; hwmon = hwmon_device_register(&eeepc->platform_device->dev); if (IS_ERR(hwmon)) { pr_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(eeepc); return result; } /* * Backlight device */ static int read_brightness(struct backlight_device *bd) { struct eeepc_laptop *eeepc = bl_get_data(bd); return get_acpi(eeepc, CM_ASL_PANELBRIGHT); } static int set_brightness(struct backlight_device *bd, int value) { struct eeepc_laptop *eeepc = bl_get_data(bd); return set_acpi(eeepc, CM_ASL_PANELBRIGHT, value); } static int update_bl_status(struct backlight_device *bd) { return set_brightness(bd, bd->props.brightness); } static struct backlight_ops eeepcbl_ops = { .get_brightness = read_brightness, .update_status = update_bl_status, }; static int eeepc_backlight_notify(struct eeepc_laptop *eeepc) { struct backlight_device *bd = eeepc->backlight_device; int old = bd->props.brightness; backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY); return old; } static int eeepc_backlight_init(struct eeepc_laptop *eeepc) { struct backlight_device *bd; bd = backlight_device_register(EEEPC_LAPTOP_FILE, &eeepc->platform_device->dev, eeepc, &eeepcbl_ops); if (IS_ERR(bd)) { pr_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(bd); bd->props.power = FB_BLANK_UNBLANK; backlight_update_status(bd); return 0; } static void eeepc_backlight_exit(struct eeepc_laptop *eeepc) { if (eeepc->backlight_device) backlight_device_unregister(eeepc->backlight_device); eeepc->backlight_device = NULL; } /* * Input device (i.e. hotkeys) */ static struct key_entry *eeepc_get_entry_by_scancode( struct eeepc_laptop *eeepc, int code) { struct key_entry *key; for (key = eeepc->keymap; key->type != KE_END; key++) if (code == key->code) return key; return NULL; } static void eeepc_input_notify(struct eeepc_laptop *eeepc, int event) { static struct key_entry *key; key = eeepc_get_entry_by_scancode(eeepc, event); if (key) { switch (key->type) { case KE_KEY: input_report_key(eeepc->inputdev, key->keycode, 1); input_sync(eeepc->inputdev); input_report_key(eeepc->inputdev, key->keycode, 0); input_sync(eeepc->inputdev); break; } } } static struct key_entry *eeepc_get_entry_by_keycode( struct eeepc_laptop *eeepc, int code) { struct key_entry *key; for (key = eeepc->keymap; key->type != KE_END; key++) if (code == key->keycode && key->type == KE_KEY) return key; return NULL; } static int eeepc_getkeycode(struct input_dev *dev, int scancode, int *keycode) { struct eeepc_laptop *eeepc = input_get_drvdata(dev); struct key_entry *key = eeepc_get_entry_by_scancode(eeepc, scancode); if (key && key->type == KE_KEY) { *keycode = key->keycode; return 0; } return -EINVAL; } static int eeepc_setkeycode(struct input_dev *dev, int scancode, int keycode) { struct eeepc_laptop *eeepc = input_get_drvdata(dev); struct key_entry *key; int old_keycode; if (keycode < 0 || keycode > KEY_MAX) return -EINVAL; key = eeepc_get_entry_by_scancode(eeepc, scancode); if (key && key->type == KE_KEY) { old_keycode = key->keycode; key->keycode = keycode; set_bit(keycode, dev->keybit); if (!eeepc_get_entry_by_keycode(eeepc, old_keycode)) clear_bit(old_keycode, dev->keybit); return 0; } return -EINVAL; } static int eeepc_input_init(struct eeepc_laptop *eeepc) { const struct key_entry *key; int result; eeepc->inputdev = input_allocate_device(); if (!eeepc->inputdev) { pr_info("Unable to allocate input device\n"); return -ENOMEM; } eeepc->inputdev->name = "Asus EeePC extra buttons"; eeepc->inputdev->dev.parent = &eeepc->platform_device->dev; eeepc->inputdev->phys = EEEPC_LAPTOP_FILE "/input0"; eeepc->inputdev->id.bustype = BUS_HOST; eeepc->inputdev->getkeycode = eeepc_getkeycode; eeepc->inputdev->setkeycode = eeepc_setkeycode; input_set_drvdata(eeepc->inputdev, eeepc); eeepc->keymap = kmemdup(eeepc_keymap, sizeof(eeepc_keymap), GFP_KERNEL); for (key = eeepc_keymap; key->type != KE_END; key++) { switch (key->type) { case KE_KEY: set_bit(EV_KEY, eeepc->inputdev->evbit); set_bit(key->keycode, eeepc->inputdev->keybit); break; } } result = input_register_device(eeepc->inputdev); if (result) { pr_info("Unable to register input device\n"); input_free_device(eeepc->inputdev); return result; } return 0; } static void eeepc_input_exit(struct eeepc_laptop *eeepc) { if (eeepc->inputdev) { input_unregister_device(eeepc->inputdev); kfree(eeepc->keymap); } } /* * ACPI driver */ static void eeepc_acpi_notify(struct acpi_device *device, u32 event) { struct eeepc_laptop *eeepc = acpi_driver_data(device); u16 count; if (event > ACPI_MAX_SYS_NOTIFY) return; count = eeepc->event_count[event % 128]++; acpi_bus_generate_proc_event(device, event, count); acpi_bus_generate_netlink_event(device->pnp.device_class, dev_name(&device->dev), event, count); if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX) { int old_brightness, new_brightness; /* Update backlight device. */ old_brightness = eeepc_backlight_notify(eeepc); /* Convert brightness event to keypress (obsolescent hack). */ new_brightness = event - NOTIFY_BRN_MIN; if (new_brightness < old_brightness) { event = NOTIFY_BRN_MIN; /* brightness down */ } else if (new_brightness > old_brightness) { event = NOTIFY_BRN_MAX; /* brightness up */ } else { /* * no change in brightness - already at min/max, * event will be desired value (or else ignored). */ } } eeepc_input_notify(eeepc, event); } static void cmsg_quirk(struct eeepc_laptop *eeepc, int cm, const char *name) { int dummy; /* Some BIOSes do not report cm although it is avaliable. Check if cm_getv[cm] works and, if yes, assume cm should be set. */ if (!(eeepc->cm_supported & (1 << cm)) && !read_acpi_int(eeepc->handle, cm_getv[cm], &dummy)) { pr_info("%s (%x) not reported by BIOS," " enabling anyway\n", name, 1 << cm); eeepc->cm_supported |= 1 << cm; } } static void cmsg_quirks(struct eeepc_laptop *eeepc) { cmsg_quirk(eeepc, CM_ASL_LID, "LID"); cmsg_quirk(eeepc, CM_ASL_TYPE, "TYPE"); cmsg_quirk(eeepc, CM_ASL_PANELPOWER, "PANELPOWER"); cmsg_quirk(eeepc, CM_ASL_TPD, "TPD"); } static int eeepc_acpi_init(struct eeepc_laptop *eeepc, struct acpi_device *device) { unsigned int init_flags; int result; result = acpi_bus_get_status(device); if (result) return result; if (!device->status.present) { pr_err("Hotkey device not present, aborting\n"); return -ENODEV; } init_flags = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH; pr_notice("Hotkey init flags 0x%x\n", init_flags); if (write_acpi_int(eeepc->handle, "INIT", init_flags)) { pr_err("Hotkey initialization failed\n"); return -ENODEV; } /* get control methods supported */ if (read_acpi_int(eeepc->handle, "CMSG", &eeepc->cm_supported)) { pr_err("Get control methods supported failed\n"); return -ENODEV; } cmsg_quirks(eeepc); pr_info("Get control methods supported: 0x%x\n", eeepc->cm_supported); return 0; } static void __devinit eeepc_enable_camera(struct eeepc_laptop *eeepc) { /* * If the following call to set_acpi() fails, it's because there's no * camera so we can ignore the error. */ if (get_acpi(eeepc, CM_ASL_CAMERA) == 0) set_acpi(eeepc, CM_ASL_CAMERA, 1); } static bool eeepc_device_present; static int __devinit eeepc_acpi_add(struct acpi_device *device) { struct eeepc_laptop *eeepc; int result; pr_notice(EEEPC_LAPTOP_NAME "\n"); eeepc = kzalloc(sizeof(struct eeepc_laptop), GFP_KERNEL); if (!eeepc) return -ENOMEM; eeepc->handle = device->handle; strcpy(acpi_device_name(device), EEEPC_ACPI_DEVICE_NAME); strcpy(acpi_device_class(device), EEEPC_ACPI_CLASS); device->driver_data = eeepc; result = eeepc_acpi_init(eeepc, device); if (result) goto fail_platform; eeepc_enable_camera(eeepc); /* * Register the platform device first. It is used as a parent for the * sub-devices below. * * Note that if there are multiple instances of this ACPI device it * will bail out, because the platform device is registered with a * fixed name. Of course it doesn't make sense to have more than one, * and machine-specific scripts find the fixed name convenient. But * It's also good for us to exclude multiple instances because both * our hwmon and our wlan rfkill subdevice use global ACPI objects * (the EC and the wlan PCI slot respectively). */ result = eeepc_platform_init(eeepc); if (result) goto fail_platform; if (!acpi_video_backlight_support()) { result = eeepc_backlight_init(eeepc); if (result) goto fail_backlight; } else pr_info("Backlight controlled by ACPI video driver\n"); result = eeepc_input_init(eeepc); if (result) goto fail_input; result = eeepc_hwmon_init(eeepc); if (result) goto fail_hwmon; result = eeepc_led_init(eeepc); if (result) goto fail_led; result = eeepc_rfkill_init(eeepc); if (result) goto fail_rfkill; eeepc_device_present = true; return 0; fail_rfkill: eeepc_led_exit(eeepc); fail_led: eeepc_hwmon_exit(eeepc); fail_hwmon: eeepc_input_exit(eeepc); fail_input: eeepc_backlight_exit(eeepc); fail_backlight: eeepc_platform_exit(eeepc); fail_platform: kfree(eeepc); return result; } static int eeepc_acpi_remove(struct acpi_device *device, int type) { struct eeepc_laptop *eeepc = acpi_driver_data(device); eeepc_backlight_exit(eeepc); eeepc_rfkill_exit(eeepc); eeepc_input_exit(eeepc); eeepc_hwmon_exit(eeepc); eeepc_led_exit(eeepc); eeepc_platform_exit(eeepc); kfree(eeepc); return 0; } static const struct acpi_device_id eeepc_device_ids[] = { {EEEPC_ACPI_HID, 0}, {"", 0}, }; MODULE_DEVICE_TABLE(acpi, eeepc_device_ids); static struct acpi_driver eeepc_acpi_driver = { .name = EEEPC_LAPTOP_NAME, .class = EEEPC_ACPI_CLASS, .owner = THIS_MODULE, .ids = eeepc_device_ids, .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, .ops = { .add = eeepc_acpi_add, .remove = eeepc_acpi_remove, .notify = eeepc_acpi_notify, }, }; static int __init eeepc_laptop_init(void) { int result; result = platform_driver_register(&platform_driver); if (result < 0) return result; result = acpi_bus_register_driver(&eeepc_acpi_driver); if (result < 0) goto fail_acpi_driver; if (!eeepc_device_present) { result = -ENODEV; goto fail_no_device; } return 0; fail_no_device: acpi_bus_unregister_driver(&eeepc_acpi_driver); fail_acpi_driver: platform_driver_unregister(&platform_driver); return result; } static void __exit eeepc_laptop_exit(void) { acpi_bus_unregister_driver(&eeepc_acpi_driver); platform_driver_unregister(&platform_driver); } module_init(eeepc_laptop_init); module_exit(eeepc_laptop_exit);