new file mode 100644
@@ -0,0 +1,6 @@
+obj-m += hp-wmi.o
+all:
+ make -C /lib/modules/`uname -r`/build M=`pwd` modules
+
+clean:
+ make -C /lib/modules/`uname -r`/build M=`pwd` clean
new file mode 100644
@@ -0,0 +1,533 @@
+/*
+ * Copyright (C) 2011-2012 Canonical
+ *
+ * Portions based on hp-wmi.c:
+ * Copyright (C) 2008 Red Hat <mjg@redhat.com>
+ * Copyright (C) 2010, 2011 Anssi Hannula <anssi.hannula@iki.fi>
+ *
+ * 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 "-fwts: " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/platform_device.h>
+#include <linux/acpi.h>
+#include <linux/string.h>
+
+#include <linux/proc_fs.h>
+#include <linux/miscdevice.h>
+
+#include "fwts-oem.h"
+
+MODULE_AUTHOR("Alex Hung <alex.hung@canonical.com>");
+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_HOTKEY_QUERY 0xc
+#define HPWMI_WIRELESS2_QUERY 0x1b
+
+enum hp_wmi_radio {
+ HPWMI_WIFI = 0,
+ HPWMI_BLUETOOTH = 1,
+ HPWMI_WWAN = 2,
+};
+
+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,
+};
+
+static int __devinit hp_wmi_bios_setup(struct platform_device *device);
+static int __exit hp_wmi_bios_remove(struct platform_device *device);
+static int hp_wmi_resume_handler(struct device *device);
+
+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 struct platform_device *hp_wmi_platform_dev;
+
+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",
+ .owner = THIS_MODULE,
+ .pm = &hp_wmi_pm_ops,
+ },
+ .probe = hp_wmi_bios_setup,
+ .remove = hp_wmi_bios_remove,
+};
+
+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_type_1b_write(u8 power_ctrl, int state)
+{
+ char buffer[4] = { 0x01, 0x00, power_ctrl, state };
+
+ if (hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 1,
+ buffer, sizeof(buffer), 0)) {
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int hp_wmi_type_1b_read(struct bios_rfkill2_state *rf_info)
+{
+ int err;
+
+ err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, 0, rf_info,
+ 0, sizeof(struct bios_rfkill2_state));
+ if (err)
+ return err;
+
+ return 0;
+}
+
+static int get_wireless_dev_structure_wmi_1b(
+ struct bios_rfkill2_device_state *rfkill_dev, enum hp_wmi_radio r)
+{
+ struct bios_rfkill2_state rf_info;
+ struct bios_rfkill2_device_state *dev = NULL;
+ int err, i;
+ bool found = false;
+
+ err = hp_wmi_type_1b_read(&rf_info);
+ if (err)
+ return -EINVAL;
+
+ for (i = 0; i < rf_info.count; i++) {
+ dev = &rf_info.device[i];
+ if (dev->radio_type == r) {
+ found = true;
+ break;
+ }
+ }
+ if (!found)
+ return FWTS_NOT_PRESENT;
+ memcpy(rfkill_dev, dev, sizeof(struct bios_rfkill2_device_state));
+
+ return 0;
+}
+
+static int convert_wireless_device_type(int radio)
+{
+ int dev_type = HPWMI_WIFI;
+
+ switch (radio) {
+ case FWTS_WIFI:
+ dev_type = HPWMI_WIFI;
+ break;
+ case FWTS_BLUETOOTH:
+ dev_type = HPWMI_BLUETOOTH;
+ break;
+ case FWTS_WWAN:
+ dev_type = HPWMI_WWAN;
+ break;
+ default:
+ break;
+ }
+
+ return dev_type;
+}
+
+static int get_wireless_device(fwts_oem_wireless __user *wd)
+{
+ struct bios_rfkill2_device_state rfdev;
+ int err;
+ int dev_type;
+
+ dev_type = convert_wireless_device_type(wd->device.device_type);
+ err = get_wireless_dev_structure_wmi_1b(&rfdev, dev_type);
+ if (err == FWTS_NOT_PRESENT) {
+ wd->oem_parameter.func_status = FWTS_NOT_PRESENT;
+ return 0;
+ } else if (err == FWTS_SUCCESS) {
+ wd->oem_parameter.func_status = FWTS_SUCCESS;
+ wd->device.device_bus = rfdev.bus_type;
+ wd->device.vendor_id = rfdev.vendor_id;
+ wd->device.device_id = rfdev.product_id;
+ wd->device.soft_kill_status = IS_SWBLOCKED(rfdev.power);
+ wd->device.hard_kill_status = IS_HWBLOCKED(rfdev.power);
+ return 0;
+ }
+
+ return err;
+}
+
+static int set_wireless_device(fwts_oem_wireless __user *wd)
+{
+ int err;
+ struct bios_rfkill2_device_state dev;
+ int dev_type;
+ int target_power;
+
+ dev_type = convert_wireless_device_type(wd->device.device_type);
+ err = get_wireless_dev_structure_wmi_1b(&dev, dev_type);
+ if (err)
+ return err;
+ target_power = !wd->device.soft_kill_status;
+ err = hp_wmi_type_1b_write(dev.rfkill_id, target_power);
+ if (err)
+ return err;
+
+ return 0;
+}
+
+static int handle_oem_wireless_cmd(fwts_oem_wireless __user *wd)
+{
+ int ret = 0;
+ u8 cmd;
+
+ cmd = wd->oem_parameter.func;
+ switch(cmd) {
+ case GET_DEVICE:
+ ret = get_wireless_device(wd);
+ break;
+ case SET_DEVICE:
+ ret = set_wireless_device(wd);
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+static long fwts_oem_runtime_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ switch(cmd) {
+ case OEM_WIRELESS_CMD:
+ handle_oem_wireless_cmd((fwts_oem_wireless __user *) arg);
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+static int fwts_oem_runtime_open(struct inode *inode, struct file *file)
+{
+ return 0;
+}
+
+static int fwts_oem_runtime_close(struct inode *inode, struct file *file)
+{
+ return 0;
+}
+
+static const struct file_operations fwts_oem_runtime_fops = {
+ .owner = THIS_MODULE,
+ .unlocked_ioctl = fwts_oem_runtime_ioctl,
+ .open = fwts_oem_runtime_open,
+ .release = fwts_oem_runtime_close,
+ .llseek = no_llseek,
+};
+
+static struct miscdevice fwts_oem_runtime_dev = {
+ MISC_DYNAMIC_MINOR,
+ "fwts_oem",
+ &fwts_oem_runtime_fops
+};
+
+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;
+ 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;
+ }
+
+ 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_WIRELESS:
+ pr_info("HPWMI_WIRELESS event is received\n");
+ break;
+ default:
+ pr_info("Event_id - %d - 0x%x\n", event_id, event_data);
+ break;
+ }
+}
+
+static int __init hp_wmi_input_setup(void)
+{
+ acpi_status status;
+ int err;
+
+ status = wmi_install_notify_handler(HPWMI_EVENT_GUID,
+ hp_wmi_notify, NULL);
+ if (ACPI_FAILURE(status)) {
+ pr_info("input_setup failed\n");
+ err = -EIO;
+ goto err_uninstall_notifier;
+ }
+
+ return 0;
+
+ err_uninstall_notifier:
+ wmi_remove_notify_handler(HPWMI_EVENT_GUID);
+ return err;
+}
+
+static void hp_wmi_input_destroy(void)
+{
+ wmi_remove_notify_handler(HPWMI_EVENT_GUID);
+}
+
+static void cleanup_sysfs(struct platform_device *device)
+{
+
+}
+
+
+static int __devinit hp_wmi_bios_setup(struct platform_device *device)
+{
+ return 0;
+}
+
+static int __exit hp_wmi_bios_remove(struct platform_device *device)
+{
+ cleanup_sysfs(device);
+
+ return 0;
+}
+
+static int hp_wmi_resume_handler(struct device *device)
+{
+ return 0;
+}
+
+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 (event_capable) {
+ err = hp_wmi_input_setup();
+ if (err)
+ return err;
+ }
+
+ if (bios_capable) {
+ err = platform_driver_register(&hp_wmi_driver);
+ if (err)
+ goto err_driver_reg;
+ hp_wmi_platform_dev = platform_device_alloc("hp-wmi", -1);
+ if (!hp_wmi_platform_dev) {
+ err = -ENOMEM;
+ goto err_device_alloc;
+ }
+ err = platform_device_add(hp_wmi_platform_dev);
+ if (err)
+ goto err_device_add;
+ }
+
+ if (!bios_capable && !event_capable)
+ return -ENODEV;
+
+ err = misc_register(&fwts_oem_runtime_dev);
+ if (err) {
+ printk(KERN_ERR "fwts_oem: can't misc_register on minor=%d\n",
+ MISC_DYNAMIC_MINOR);
+ return err;
+ }
+
+ return 0;
+
+err_device_add:
+ platform_device_put(hp_wmi_platform_dev);
+err_device_alloc:
+ platform_driver_unregister(&hp_wmi_driver);
+err_driver_reg:
+ if (event_capable)
+ hp_wmi_input_destroy();
+
+ return err;
+}
+
+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);
+ }
+
+ misc_deregister(&fwts_oem_runtime_dev);
+}
+
+module_init(hp_wmi_init);
+module_exit(hp_wmi_exit);
Signed-off-by: Alex Hung <alex.hung@canonical.com> --- oem/Makefile | 6 + oem/hp-wmi.c | 533 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 539 insertions(+) create mode 100644 oem/Makefile create mode 100644 oem/hp-wmi.c