--- /dev/null
+/*
+ * HP WMI hotkeys
+ *
+ * Copyright (C) 2008 Red Hat <mjg@redhat.com>
+ * Copyright (C) 2010, 2011 Anssi Hannula <anssi.hannula@iki.fi>
+ *
+ * Portions based on wistron_btns.c:
+ * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
+ * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
+ * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <linux/platform_device.h>
+#include <linux/acpi.h>
+#include <linux/rfkill.h>
+#include <linux/string.h>
+
+MODULE_AUTHOR("Matthew Garrett <mjg59@srcf.ucam.org>");
+MODULE_DESCRIPTION("HP laptop WMI hotkeys driver");
+MODULE_LICENSE("GPL");
+
+MODULE_ALIAS("wmi:95F24279-4D7B-4334-9387-ACCDC67EF61C");
+MODULE_ALIAS("wmi:5FB7F034-2C63-45e9-BE91-3D44E2C707E4");
+
+#define HPWMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C"
+#define HPWMI_BIOS_GUID "5FB7F034-2C63-45e9-BE91-3D44E2C707E4"
+
+#define HPWMI_DISPLAY_QUERY 0x1
+#define HPWMI_HDDTEMP_QUERY 0x2
+#define HPWMI_ALS_QUERY 0x3
+#define HPWMI_HARDWARE_QUERY 0x4
+#define HPWMI_WIRELESS_QUERY 0x5
+#define HPWMI_BIOS_QUERY 0x9
+#define HPWMI_HOTKEY_QUERY 0xc
+#define HPWMI_FEATURE_QUERY 0xd
+#define HPWMI_WIRELESS2_QUERY 0x1b
+#define HPWMI_POSTCODEERROR_QUERY 0x2a
+
+enum hp_wmi_radio {
+ HPWMI_WIFI = 0,
+ HPWMI_BLUETOOTH = 1,
+ HPWMI_WWAN = 2,
+ HPWMI_GPS = 3,
+};
+
+enum hp_wmi_event_ids {
+ HPWMI_DOCK_EVENT = 1,
+ HPWMI_PARK_HDD = 2,
+ HPWMI_SMART_ADAPTER = 3,
+ HPWMI_BEZEL_BUTTON = 4,
+ HPWMI_WIRELESS = 5,
+ HPWMI_CPU_BATTERY_THROTTLE = 6,
+ HPWMI_LOCK_SWITCH = 7,
+ HPWMI_LID_SWITCH = 8,
+ HPWMI_SCREEN_ROTATION = 9,
+ HPWMI_COOLSENSE_SYSTEM_MOBILE = 0x0A,
+ HPWMI_COOLSENSE_SYSTEM_HOT = 0x0B,
+ HPWMI_PROXIMITY_SENSOR = 0x0C,
+ HPWMI_BACKLIT_KB_BRIGHTNESS = 0x0D,
+ HPWMI_PEAKSHIFT_PERIOD = 0x0F,
+ HPWMI_BATTERY_CHARGE_PERIOD = 0x10,
+};
+
+struct bios_args {
+ u32 signature;
+ u32 command;
+ u32 commandtype;
+ u32 datasize;
+ u32 data;
+};
+
+struct bios_return {
+ u32 sigpass;
+ u32 return_code;
+};
+
+enum hp_return_value {
+ HPWMI_RET_WRONG_SIGNATURE = 0x02,
+ HPWMI_RET_UNKNOWN_COMMAND = 0x03,
+ HPWMI_RET_UNKNOWN_CMDTYPE = 0x04,
+ HPWMI_RET_INVALID_PARAMETERS = 0x05,
+};
+
+enum hp_wireless2_bits {
+ HPWMI_POWER_STATE = 0x01,
+ HPWMI_POWER_SOFT = 0x02,
+ HPWMI_POWER_BIOS = 0x04,
+ HPWMI_POWER_HARD = 0x08,
+};
+
+#define IS_HWBLOCKED(x) ((x & (HPWMI_POWER_BIOS | HPWMI_POWER_HARD)) \
+ != (HPWMI_POWER_BIOS | HPWMI_POWER_HARD))
+#define IS_SWBLOCKED(x) !(x & HPWMI_POWER_SOFT)
+
+struct bios_rfkill2_device_state {
+ u8 radio_type;
+ u8 bus_type;
+ u16 vendor_id;
+ u16 product_id;
+ u16 subsys_vendor_id;
+ u16 subsys_product_id;
+ u8 rfkill_id;
+ u8 power;
+ u8 unknown[4];
+};
+
+/* 7 devices fit into the 128 byte buffer */
+#define HPWMI_MAX_RFKILL2_DEVICES 7
+
+struct bios_rfkill2_state {
+ u8 unknown[7];
+ u8 count;
+ u8 pad[8];
+ struct bios_rfkill2_device_state device[HPWMI_MAX_RFKILL2_DEVICES];
+};
+
+static const struct key_entry hp_wmi_keymap[] = {
+ { KE_KEY, 0x02, { KEY_BRIGHTNESSUP } },
+ { KE_KEY, 0x03, { KEY_BRIGHTNESSDOWN } },
+ { KE_KEY, 0x20e6, { KEY_PROG1 } },
+ { KE_KEY, 0x20e8, { KEY_MEDIA } },
+ { KE_KEY, 0x2142, { KEY_MEDIA } },
+ { KE_KEY, 0x213b, { KEY_INFO } },
+ { KE_KEY, 0x2169, { KEY_ROTATE_DISPLAY } },
+ { KE_KEY, 0x216a, { KEY_SETUP } },
+ { KE_KEY, 0x231b, { KEY_HELP } },
+ { KE_END, 0 }
+};
+
+static struct input_dev *hp_wmi_input_dev;
+static struct platform_device *hp_wmi_platform_dev;
+
+static struct rfkill *wifi_rfkill;
+static struct rfkill *bluetooth_rfkill;
+static struct rfkill *wwan_rfkill;
+static struct rfkill *gps_rfkill;
+
+struct rfkill2_device {
+ u8 id;
+ int num;
+ struct rfkill *rfkill;
+};
+
+static int rfkill2_count;
+static struct rfkill2_device rfkill2[HPWMI_MAX_RFKILL2_DEVICES];
+
+/*
+ * hp_wmi_perform_query
+ *
+ * query: The commandtype -> What should be queried
+ * write: The command -> 0 read, 1 write, 3 ODM specific
+ * buffer: Buffer used as input and/or output
+ * insize: Size of input buffer
+ * outsize: Size of output buffer
+ *
+ * returns zero on success
+ * an HP WMI query specific error code (which is positive)
+ * -EINVAL if the query was not successful at all
+ * -EINVAL if the output buffer size exceeds buffersize
+ *
+ * Note: The buffersize must at least be the maximum of the input and output
+ * size. E.g. Battery info query (0x7) is defined to have 1 byte input
+ * and 128 byte output. The caller would do:
+ * buffer = kzalloc(128, GFP_KERNEL);
+ * ret = hp_wmi_perform_query(0x7, 0, buffer, 1, 128)
+ */
+static int hp_wmi_perform_query(int query, int write, void *buffer,
+ int insize, int outsize)
+{
+ struct bios_return *bios_return;
+ int actual_outsize;
+ union acpi_object *obj;
+ struct bios_args args = {
+ .signature = 0x55434553,
+ .command = write ? 0x2 : 0x1,
+ .commandtype = query,
+ .datasize = insize,
+ .data = 0,
+ };
+ struct acpi_buffer input = { sizeof(struct bios_args), &args };
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ u32 rc;
+
+ if (WARN_ON(insize > sizeof(args.data)))
+ return -EINVAL;
+ memcpy(&args.data, buffer, insize);
+
+ wmi_evaluate_method(HPWMI_BIOS_GUID, 0, 0x3, &input, &output);
+
+ obj = output.pointer;
+
+ if (!obj)
+ return -EINVAL;
+ else if (obj->type != ACPI_TYPE_BUFFER) {
+ kfree(obj);
+ return -EINVAL;
+ }
+
+ bios_return = (struct bios_return *)obj->buffer.pointer;
+ rc = bios_return->return_code;
+
+ if (rc) {
+ if (rc != HPWMI_RET_UNKNOWN_CMDTYPE)
+ pr_warn("query 0x%x returned error 0x%x\n", query, rc);
+ kfree(obj);
+ return rc;
+ }
+
+ if (!outsize) {
+ /* ignore output data */
+ kfree(obj);
+ return 0;
+ }
+
+ actual_outsize = min(outsize, (int)(obj->buffer.length - sizeof(*bios_return)));
+ memcpy(buffer, obj->buffer.pointer + sizeof(*bios_return), actual_outsize);
+ memset(buffer + actual_outsize, 0, outsize - actual_outsize);
+ kfree(obj);
+ return 0;
+}
+
+static int hp_wmi_display_state(void)
+{
+ int state = 0;
+ int ret = hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, &state,
+ sizeof(state), sizeof(state));
+ if (ret)
+ return -EINVAL;
+ return state;
+}
+
+static int hp_wmi_hddtemp_state(void)
+{
+ int state = 0;
+ int ret = hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, &state,
+ sizeof(state), sizeof(state));
+ if (ret)
+ return -EINVAL;
+ return state;
+}
+
+static int hp_wmi_als_state(void)
+{
+ int state = 0;
+ int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, &state,
+ sizeof(state), sizeof(state));
+ if (ret)
+ return -EINVAL;
+ return state;
+}
+
+static int hp_wmi_dock_state(void)
+{
+ int state = 0;
+ int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
+ sizeof(state), sizeof(state));
+
+ if (ret)
+ return -EINVAL;
+
+ return state & 0x1;
+}
+
+static int hp_wmi_tablet_state(void)
+{
+ int state = 0;
+ int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
+ sizeof(state), sizeof(state));
+ if (ret)
+ return ret;
+
+ return (state & 0x4) ? 1 : 0;
+}
+
+static int __init hp_wmi_bios_2009_later(void)
+{
+ int state = 0;
+ int ret = hp_wmi_perform_query(HPWMI_FEATURE_QUERY, 0, &state,
+ sizeof(state), sizeof(state));
+ if (ret)
+ return ret;
+
+ return (state & 0x10) ? 1 : 0;
+}
+
+static int hp_wmi_enable_hotkeys(void)
+{
+ int ret;
+ int query = 0x6e;
+
+ ret = hp_wmi_perform_query(HPWMI_BIOS_QUERY, 1, &query, sizeof(query),
+ 0);
+
+ if (ret)
+ return -EINVAL;
+ return 0;
+}
+
+static int hp_wmi_set_block(void *data, bool blocked)
+{
+ enum hp_wmi_radio r = (enum hp_wmi_radio) data;
+ int query = BIT(r + 8) | ((!blocked) << r);
+ int ret;
+
+ ret = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1,
+ &query, sizeof(query), 0);
+ if (ret)
+ return -EINVAL;
+ return 0;
+}
+
+static const struct rfkill_ops hp_wmi_rfkill_ops = {
+ .set_block = hp_wmi_set_block,
+};
+
+static bool hp_wmi_get_sw_state(enum hp_wmi_radio r)
+{
+ int wireless = 0;
+ int mask;
+ hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
+ &wireless, sizeof(wireless),
+ sizeof(wireless));
+ /* TBD: Pass error */
+
+ mask = 0x200 << (r * 8);
+
+ if (wireless & mask)
+ return false;
+ else
+ return true;
+}
+
+static bool hp_wmi_get_hw_state(enum hp_wmi_radio r)
+{
+ int wireless = 0;
+ int mask;
+ hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0,
+ &wireless, sizeof(wireless),
+ sizeof(wireless));
+ /* TBD: Pass error */
+
+ mask = 0x800 << (r * 8);
+
+ if (wireless & mask)
+ return false;
+ else
+ return true;
+}
+
+static int hp_wmi_rfkill2_set_block(void *data, bool blocked)
+{
+ int rfkill_id = (int)(long)data;
+ char buffer[4] = { 0x01, 0x00, rfkill_id, !blocked };
+
+ if (hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 1,
+ buffer, sizeof(buffer), 0))
+ return -EINVAL;
+ return 0;
+}
+
+static const struct rfkill_ops hp_wmi_rfkill2_ops = {
+ .set_block = hp_wmi_rfkill2_set_block,
+};
+
+static int hp_wmi_rfkill2_refresh(void)
+{
+ int err, i;
+ struct bios_rfkill2_state state;
+
+ err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 0, &state,
+ 0, sizeof(state));
+ if (err)
+ return err;
+
+ for (i = 0; i < rfkill2_count; i++) {
+ int num = rfkill2[i].num;
+ struct bios_rfkill2_device_state *devstate;
+ devstate = &state.device[num];
+
+ if (num >= state.count ||
+ devstate->rfkill_id != rfkill2[i].id) {
+ pr_warn("power configuration of the wireless devices unexpectedly changed\n");
+ continue;
+ }
+
+ rfkill_set_states(rfkill2[i].rfkill,
+ IS_SWBLOCKED(devstate->power),
+ IS_HWBLOCKED(devstate->power));
+ }
+
+ return 0;
+}
+
+static int hp_wmi_post_code_state(void)
+{
+ int state = 0;
+ int ret = hp_wmi_perform_query(HPWMI_POSTCODEERROR_QUERY, 0, &state,
+ sizeof(state), sizeof(state));
+ if (ret)
+ return -EINVAL;
+ return state;
+}
+
+static ssize_t show_display(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int value = hp_wmi_display_state();
+ if (value < 0)
+ return -EINVAL;
+ return sprintf(buf, "%d\n", value);
+}
+
+static ssize_t show_hddtemp(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int value = hp_wmi_hddtemp_state();
+ if (value < 0)
+ return -EINVAL;
+ return sprintf(buf, "%d\n", value);
+}
+
+static ssize_t show_als(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int value = hp_wmi_als_state();
+ if (value < 0)
+ return -EINVAL;
+ return sprintf(buf, "%d\n", value);
+}
+
+static ssize_t show_dock(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int value = hp_wmi_dock_state();
+ if (value < 0)
+ return -EINVAL;
+ return sprintf(buf, "%d\n", value);
+}
+
+static ssize_t show_tablet(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int value = hp_wmi_tablet_state();
+ if (value < 0)
+ return -EINVAL;
+ return sprintf(buf, "%d\n", value);
+}
+
+static ssize_t show_postcode(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ /* Get the POST error code of previous boot failure. */
+ int value = hp_wmi_post_code_state();
+ if (value < 0)
+ return -EINVAL;
+ return sprintf(buf, "0x%x\n", value);
+}
+
+static ssize_t set_als(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ u32 tmp = simple_strtoul(buf, NULL, 10);
+ int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, &tmp,
+ sizeof(tmp), sizeof(tmp));
+ if (ret)
+ return -EINVAL;
+
+ return count;
+}
+
+static ssize_t set_postcode(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int ret;
+ u32 tmp;
+ long unsigned int tmp2;
+
+ ret = kstrtoul(buf, 10, &tmp2);
+ if (ret || tmp2 != 1)
+ return -EINVAL;
+
+ /* Clear the POST error code. It is kept until until cleared. */
+ tmp = (u32) tmp2;
+ ret = hp_wmi_perform_query(HPWMI_POSTCODEERROR_QUERY, 1, &tmp,
+ sizeof(tmp), sizeof(tmp));
+ if (ret)
+ return -EINVAL;
+
+ return count;
+}
+
+static DEVICE_ATTR(display, S_IRUGO, show_display, NULL);
+static DEVICE_ATTR(hddtemp, S_IRUGO, show_hddtemp, NULL);
+static DEVICE_ATTR(als, S_IRUGO | S_IWUSR, show_als, set_als);
+static DEVICE_ATTR(dock, S_IRUGO, show_dock, NULL);
+static DEVICE_ATTR(tablet, S_IRUGO, show_tablet, NULL);
+static DEVICE_ATTR(postcode, S_IRUGO | S_IWUSR, show_postcode, set_postcode);
+
+static void hp_wmi_notify(u32 value, void *context)
+{
+ struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+ u32 event_id, event_data;
+ int key_code = 0, ret;
+ u32 *location;
+ acpi_status status;
+
+ status = wmi_get_event_data(value, &response);
+ if (status != AE_OK) {
+ pr_info("bad event status 0x%x\n", status);
+ return;
+ }
+
+ obj = (union acpi_object *)response.pointer;
+
+ if (!obj)
+ return;
+ if (obj->type != ACPI_TYPE_BUFFER) {
+ pr_info("Unknown response received %d\n", obj->type);
+ kfree(obj);
+ return;
+ }
+
+ /*
+ * Depending on ACPI version the concatenation of id and event data
+ * inside _WED function will result in a 8 or 16 byte buffer.
+ */
+ location = (u32 *)obj->buffer.pointer;
+ if (obj->buffer.length == 8) {
+ event_id = *location;
+ event_data = *(location + 1);
+ } else if (obj->buffer.length == 16) {
+ event_id = *location;
+ event_data = *(location + 2);
+ } else {
+ pr_info("Unknown buffer length %d\n", obj->buffer.length);
+ kfree(obj);
+ return;
+ }
+ kfree(obj);
+
+ switch (event_id) {
+ case HPWMI_DOCK_EVENT:
+ input_report_switch(hp_wmi_input_dev, SW_DOCK,
+ hp_wmi_dock_state());
+ input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
+ hp_wmi_tablet_state());
+ input_sync(hp_wmi_input_dev);
+ break;
+ case HPWMI_PARK_HDD:
+ break;
+ case HPWMI_SMART_ADAPTER:
+ break;
+ case HPWMI_BEZEL_BUTTON:
+ ret = hp_wmi_perform_query(HPWMI_HOTKEY_QUERY, 0,
+ &key_code,
+ sizeof(key_code),
+ sizeof(key_code));
+ if (ret)
+ break;
+
+ if (!sparse_keymap_report_event(hp_wmi_input_dev,
+ key_code, 1, true))
+ pr_info("Unknown key code - 0x%x\n", key_code);
+ break;
+ case HPWMI_WIRELESS:
+ if (rfkill2_count) {
+ hp_wmi_rfkill2_refresh();
+ break;
+ }
+
+ if (wifi_rfkill)
+ rfkill_set_states(wifi_rfkill,
+ hp_wmi_get_sw_state(HPWMI_WIFI),
+ hp_wmi_get_hw_state(HPWMI_WIFI));
+ if (bluetooth_rfkill)
+ rfkill_set_states(bluetooth_rfkill,
+ hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
+ hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
+ if (wwan_rfkill)
+ rfkill_set_states(wwan_rfkill,
+ hp_wmi_get_sw_state(HPWMI_WWAN),
+ hp_wmi_get_hw_state(HPWMI_WWAN));
+ if (gps_rfkill)
+ rfkill_set_states(gps_rfkill,
+ hp_wmi_get_sw_state(HPWMI_GPS),
+ hp_wmi_get_hw_state(HPWMI_GPS));
+ break;
+ case HPWMI_CPU_BATTERY_THROTTLE:
+ pr_info("Unimplemented CPU throttle because of 3 Cell battery event detected\n");
+ break;
+ case HPWMI_LOCK_SWITCH:
+ break;
+ case HPWMI_LID_SWITCH:
+ break;
+ case HPWMI_SCREEN_ROTATION:
+ break;
+ case HPWMI_COOLSENSE_SYSTEM_MOBILE:
+ break;
+ case HPWMI_COOLSENSE_SYSTEM_HOT:
+ break;
+ case HPWMI_PROXIMITY_SENSOR:
+ break;
+ case HPWMI_BACKLIT_KB_BRIGHTNESS:
+ break;
+ case HPWMI_PEAKSHIFT_PERIOD:
+ break;
+ case HPWMI_BATTERY_CHARGE_PERIOD:
+ break;
+ default:
+ pr_info("Unknown event_id - %d - 0x%x\n", event_id, event_data);
+ break;
+ }
+}
+
+static int __init hp_wmi_input_setup(void)
+{
+ acpi_status status;
+ int err;
+
+ hp_wmi_input_dev = input_allocate_device();
+ if (!hp_wmi_input_dev)
+ return -ENOMEM;
+
+ hp_wmi_input_dev->name = "HP WMI hotkeys";
+ hp_wmi_input_dev->phys = "wmi/input0";
+ hp_wmi_input_dev->id.bustype = BUS_HOST;
+
+ __set_bit(EV_SW, hp_wmi_input_dev->evbit);
+ __set_bit(SW_DOCK, hp_wmi_input_dev->swbit);
+ __set_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit);
+
+ err = sparse_keymap_setup(hp_wmi_input_dev, hp_wmi_keymap, NULL);
+ if (err)
+ goto err_free_dev;
+
+ /* Set initial hardware state */
+ input_report_switch(hp_wmi_input_dev, SW_DOCK, hp_wmi_dock_state());
+ input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
+ hp_wmi_tablet_state());
+ input_sync(hp_wmi_input_dev);
+
+ if (hp_wmi_bios_2009_later() == 4)
+ hp_wmi_enable_hotkeys();
+
+ status = wmi_install_notify_handler(HPWMI_EVENT_GUID, hp_wmi_notify, NULL);
+ if (ACPI_FAILURE(status)) {
+ err = -EIO;
+ goto err_free_keymap;
+ }
+
+ err = input_register_device(hp_wmi_input_dev);
+ if (err)
+ goto err_uninstall_notifier;
+
+ return 0;
+
+ err_uninstall_notifier:
+ wmi_remove_notify_handler(HPWMI_EVENT_GUID);
+ err_free_keymap:
+ sparse_keymap_free(hp_wmi_input_dev);
+ err_free_dev:
+ input_free_device(hp_wmi_input_dev);
+ return err;
+}
+
+static void hp_wmi_input_destroy(void)
+{
+ wmi_remove_notify_handler(HPWMI_EVENT_GUID);
+ sparse_keymap_free(hp_wmi_input_dev);
+ input_unregister_device(hp_wmi_input_dev);
+}
+
+static void cleanup_sysfs(struct platform_device *device)
+{
+ device_remove_file(&device->dev, &dev_attr_display);
+ device_remove_file(&device->dev, &dev_attr_hddtemp);
+ device_remove_file(&device->dev, &dev_attr_als);
+ device_remove_file(&device->dev, &dev_attr_dock);
+ device_remove_file(&device->dev, &dev_attr_tablet);
+ device_remove_file(&device->dev, &dev_attr_postcode);
+}
+
+static int __init hp_wmi_rfkill_setup(struct platform_device *device)
+{
+ int err;
+ int wireless = 0;
+
+ err = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, &wireless,
+ sizeof(wireless), sizeof(wireless));
+ if (err)
+ return err;
+
+ if (wireless & 0x1) {
+ wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev,
+ RFKILL_TYPE_WLAN,
+ &hp_wmi_rfkill_ops,
+ (void *) HPWMI_WIFI);
+ if (!wifi_rfkill)
+ return -ENOMEM;
+ rfkill_init_sw_state(wifi_rfkill,
+ hp_wmi_get_sw_state(HPWMI_WIFI));
+ rfkill_set_hw_state(wifi_rfkill,
+ hp_wmi_get_hw_state(HPWMI_WIFI));
+ err = rfkill_register(wifi_rfkill);
+ if (err)
+ goto register_wifi_error;
+ }
+
+ if (wireless & 0x2) {
+ bluetooth_rfkill = rfkill_alloc("hp-bluetooth", &device->dev,
+ RFKILL_TYPE_BLUETOOTH,
+ &hp_wmi_rfkill_ops,
+ (void *) HPWMI_BLUETOOTH);
+ if (!bluetooth_rfkill) {
+ err = -ENOMEM;
+ goto register_wifi_error;
+ }
+ rfkill_init_sw_state(bluetooth_rfkill,
+ hp_wmi_get_sw_state(HPWMI_BLUETOOTH));
+ rfkill_set_hw_state(bluetooth_rfkill,
+ hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
+ err = rfkill_register(bluetooth_rfkill);
+ if (err)
+ goto register_bluetooth_error;
+ }
+
+ if (wireless & 0x4) {
+ wwan_rfkill = rfkill_alloc("hp-wwan", &device->dev,
+ RFKILL_TYPE_WWAN,
+ &hp_wmi_rfkill_ops,
+ (void *) HPWMI_WWAN);
+ if (!wwan_rfkill) {
+ err = -ENOMEM;
+ goto register_bluetooth_error;
+ }
+ rfkill_init_sw_state(wwan_rfkill,
+ hp_wmi_get_sw_state(HPWMI_WWAN));
+ rfkill_set_hw_state(wwan_rfkill,
+ hp_wmi_get_hw_state(HPWMI_WWAN));
+ err = rfkill_register(wwan_rfkill);
+ if (err)
+ goto register_wwan_error;
+ }
+
+ if (wireless & 0x8) {
+ gps_rfkill = rfkill_alloc("hp-gps", &device->dev,
+ RFKILL_TYPE_GPS,
+ &hp_wmi_rfkill_ops,
+ (void *) HPWMI_GPS);
+ if (!gps_rfkill) {
+ err = -ENOMEM;
+ goto register_wwan_error;
+ }
+ rfkill_init_sw_state(gps_rfkill,
+ hp_wmi_get_sw_state(HPWMI_GPS));
+ rfkill_set_hw_state(gps_rfkill,
+ hp_wmi_get_hw_state(HPWMI_GPS));
+ err = rfkill_register(gps_rfkill);
+ if (err)
+ goto register_gps_error;
+ }
+
+ return 0;
+register_gps_error:
+ rfkill_destroy(gps_rfkill);
+ gps_rfkill = NULL;
+ if (bluetooth_rfkill)
+ rfkill_unregister(bluetooth_rfkill);
+register_wwan_error:
+ rfkill_destroy(wwan_rfkill);
+ wwan_rfkill = NULL;
+ if (gps_rfkill)
+ rfkill_unregister(gps_rfkill);
+register_bluetooth_error:
+ rfkill_destroy(bluetooth_rfkill);
+ bluetooth_rfkill = NULL;
+ if (wifi_rfkill)
+ rfkill_unregister(wifi_rfkill);
+register_wifi_error:
+ rfkill_destroy(wifi_rfkill);
+ wifi_rfkill = NULL;
+ return err;
+}
+
+static int __init hp_wmi_rfkill2_setup(struct platform_device *device)
+{
+ int err, i;
+ struct bios_rfkill2_state state;
+ err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 0, &state,
+ 0, sizeof(state));
+ if (err)
+ return err;
+
+ if (state.count > HPWMI_MAX_RFKILL2_DEVICES) {
+ pr_warn("unable to parse 0x1b query output\n");
+ return -EINVAL;
+ }
+
+ for (i = 0; i < state.count; i++) {
+ struct rfkill *rfkill;
+ enum rfkill_type type;
+ char *name;
+ switch (state.device[i].radio_type) {
+ case HPWMI_WIFI:
+ type = RFKILL_TYPE_WLAN;
+ name = "hp-wifi";
+ break;
+ case HPWMI_BLUETOOTH:
+ type = RFKILL_TYPE_BLUETOOTH;
+ name = "hp-bluetooth";
+ break;
+ case HPWMI_WWAN:
+ type = RFKILL_TYPE_WWAN;
+ name = "hp-wwan";
+ break;
+ case HPWMI_GPS:
+ type = RFKILL_TYPE_GPS;
+ name = "hp-gps";
+ break;
+ default:
+ pr_warn("unknown device type 0x%x\n",
+ state.device[i].radio_type);
+ continue;
+ }
+
+ if (!state.device[i].vendor_id) {
+ pr_warn("zero device %d while %d reported\n",
+ i, state.count);
+ continue;
+ }
+
+ rfkill = rfkill_alloc(name, &device->dev, type,
+ &hp_wmi_rfkill2_ops, (void *)(long)i);
+ if (!rfkill) {
+ err = -ENOMEM;
+ goto fail;
+ }
+
+ rfkill2[rfkill2_count].id = state.device[i].rfkill_id;
+ rfkill2[rfkill2_count].num = i;
+ rfkill2[rfkill2_count].rfkill = rfkill;
+
+ rfkill_init_sw_state(rfkill,
+ IS_SWBLOCKED(state.device[i].power));
+ rfkill_set_hw_state(rfkill,
+ IS_HWBLOCKED(state.device[i].power));
+
+ if (!(state.device[i].power & HPWMI_POWER_BIOS))
+ pr_info("device %s blocked by BIOS\n", name);
+
+ err = rfkill_register(rfkill);
+ if (err) {
+ rfkill_destroy(rfkill);
+ goto fail;
+ }
+
+ rfkill2_count++;
+ }
+
+ return 0;
+fail:
+ for (; rfkill2_count > 0; rfkill2_count--) {
+ rfkill_unregister(rfkill2[rfkill2_count - 1].rfkill);
+ rfkill_destroy(rfkill2[rfkill2_count - 1].rfkill);
+ }
+ return err;
+}
+
+static int __init hp_wmi_bios_setup(struct platform_device *device)
+{
+ int err;
+
+ /* clear detected rfkill devices */
+ wifi_rfkill = NULL;
+ bluetooth_rfkill = NULL;
+ wwan_rfkill = NULL;
+ gps_rfkill = NULL;
+ rfkill2_count = 0;
+
+ if (hp_wmi_bios_2009_later() || hp_wmi_rfkill_setup(device))
+ hp_wmi_rfkill2_setup(device);
+
+ err = device_create_file(&device->dev, &dev_attr_display);
+ if (err)
+ goto add_sysfs_error;
+ err = device_create_file(&device->dev, &dev_attr_hddtemp);
+ if (err)
+ goto add_sysfs_error;
+ err = device_create_file(&device->dev, &dev_attr_als);
+ if (err)
+ goto add_sysfs_error;
+ err = device_create_file(&device->dev, &dev_attr_dock);
+ if (err)
+ goto add_sysfs_error;
+ err = device_create_file(&device->dev, &dev_attr_tablet);
+ if (err)
+ goto add_sysfs_error;
+ err = device_create_file(&device->dev, &dev_attr_postcode);
+ if (err)
+ goto add_sysfs_error;
+ return 0;
+
+add_sysfs_error:
+ cleanup_sysfs(device);
+ return err;
+}
+
+static int __exit hp_wmi_bios_remove(struct platform_device *device)
+{
+ int i;
+ cleanup_sysfs(device);
+
+ for (i = 0; i < rfkill2_count; i++) {
+ rfkill_unregister(rfkill2[i].rfkill);
+ rfkill_destroy(rfkill2[i].rfkill);
+ }
+
+ if (wifi_rfkill) {
+ rfkill_unregister(wifi_rfkill);
+ rfkill_destroy(wifi_rfkill);
+ }
+ if (bluetooth_rfkill) {
+ rfkill_unregister(bluetooth_rfkill);
+ rfkill_destroy(bluetooth_rfkill);
+ }
+ if (wwan_rfkill) {
+ rfkill_unregister(wwan_rfkill);
+ rfkill_destroy(wwan_rfkill);
+ }
+ if (gps_rfkill) {
+ rfkill_unregister(gps_rfkill);
+ rfkill_destroy(gps_rfkill);
+ }
+
+ return 0;
+}
+
+static int hp_wmi_resume_handler(struct device *device)
+{
+ /*
+ * Hardware state may have changed while suspended, so trigger
+ * input events for the current state. As this is a switch,
+ * the input layer will only actually pass it on if the state
+ * changed.
+ */
+ if (hp_wmi_input_dev) {
+ input_report_switch(hp_wmi_input_dev, SW_DOCK,
+ hp_wmi_dock_state());
+ input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
+ hp_wmi_tablet_state());
+ input_sync(hp_wmi_input_dev);
+ }
+
+ if (rfkill2_count)
+ hp_wmi_rfkill2_refresh();
+
+ if (wifi_rfkill)
+ rfkill_set_states(wifi_rfkill,
+ hp_wmi_get_sw_state(HPWMI_WIFI),
+ hp_wmi_get_hw_state(HPWMI_WIFI));
+ if (bluetooth_rfkill)
+ rfkill_set_states(bluetooth_rfkill,
+ hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
+ hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
+ if (wwan_rfkill)
+ rfkill_set_states(wwan_rfkill,
+ hp_wmi_get_sw_state(HPWMI_WWAN),
+ hp_wmi_get_hw_state(HPWMI_WWAN));
+ if (gps_rfkill)
+ rfkill_set_states(gps_rfkill,
+ hp_wmi_get_sw_state(HPWMI_GPS),
+ hp_wmi_get_hw_state(HPWMI_GPS));
+
+ return 0;
+}
+
+static const struct dev_pm_ops hp_wmi_pm_ops = {
+ .resume = hp_wmi_resume_handler,
+ .restore = hp_wmi_resume_handler,
+};
+
+static struct platform_driver hp_wmi_driver = {
+ .driver = {
+ .name = "hp-wmi",
+ .pm = &hp_wmi_pm_ops,
+ },
+ .remove = __exit_p(hp_wmi_bios_remove),
+};
+
+static int __init hp_wmi_init(void)
+{
+ int err;
+ int event_capable = wmi_has_guid(HPWMI_EVENT_GUID);
+ int bios_capable = wmi_has_guid(HPWMI_BIOS_GUID);
+
+ if (!bios_capable && !event_capable)
+ return -ENODEV;
+
+ if (event_capable) {
+ err = hp_wmi_input_setup();
+ if (err)
+ return err;
+ }
+
+ if (bios_capable) {
+ hp_wmi_platform_dev =
+ platform_device_register_simple("hp-wmi", -1, NULL, 0);
+ if (IS_ERR(hp_wmi_platform_dev)) {
+ err = PTR_ERR(hp_wmi_platform_dev);
+ goto err_destroy_input;
+ }
+
+ err = platform_driver_probe(&hp_wmi_driver, hp_wmi_bios_setup);
+ if (err)
+ goto err_unregister_device;
+ }
+
+ return 0;
+
+err_unregister_device:
+ platform_device_unregister(hp_wmi_platform_dev);
+err_destroy_input:
+ if (event_capable)
+ hp_wmi_input_destroy();
+
+ return err;
+}
+module_init(hp_wmi_init);
+
+static void __exit hp_wmi_exit(void)
+{
+ if (wmi_has_guid(HPWMI_EVENT_GUID))
+ hp_wmi_input_destroy();
+
+ if (hp_wmi_platform_dev) {
+ platform_device_unregister(hp_wmi_platform_dev);
+ platform_driver_unregister(&hp_wmi_driver);
+ }
+}
+module_exit(hp_wmi_exit);
Code Review / kvmfornfv.git / blobdiff