| /* |
| * HIDPP protocol for Logitech Unifying receivers |
| * |
| * Copyright (c) 2011 Logitech (c) |
| * Copyright (c) 2012-2013 Google (c) |
| * Copyright (c) 2013-2014 Red Hat Inc. |
| */ |
| |
| /* |
| * 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; version 2 of the License. |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include <linux/device.h> |
| #include <linux/input.h> |
| #include <linux/usb.h> |
| #include <linux/hid.h> |
| #include <linux/module.h> |
| #include <linux/slab.h> |
| #include <linux/sched.h> |
| #include <linux/kfifo.h> |
| #include <linux/input/mt.h> |
| #include <linux/workqueue.h> |
| #include <linux/atomic.h> |
| #include <linux/fixp-arith.h> |
| #include <asm/unaligned.h> |
| #include "usbhid/usbhid.h" |
| #include "hid-ids.h" |
| |
| MODULE_LICENSE("GPL"); |
| MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>"); |
| MODULE_AUTHOR("Nestor Lopez Casado <nlopezcasad@logitech.com>"); |
| |
| static bool disable_raw_mode; |
| module_param(disable_raw_mode, bool, 0644); |
| MODULE_PARM_DESC(disable_raw_mode, |
| "Disable Raw mode reporting for touchpads and keep firmware gestures."); |
| |
| static bool disable_tap_to_click; |
| module_param(disable_tap_to_click, bool, 0644); |
| MODULE_PARM_DESC(disable_tap_to_click, |
| "Disable Tap-To-Click mode reporting for touchpads (only on the K400 currently)."); |
| |
| #define REPORT_ID_HIDPP_SHORT 0x10 |
| #define REPORT_ID_HIDPP_LONG 0x11 |
| #define REPORT_ID_HIDPP_VERY_LONG 0x12 |
| |
| #define HIDPP_REPORT_SHORT_LENGTH 7 |
| #define HIDPP_REPORT_LONG_LENGTH 20 |
| #define HIDPP_REPORT_VERY_LONG_LENGTH 64 |
| |
| #define HIDPP_QUIRK_CLASS_WTP BIT(0) |
| #define HIDPP_QUIRK_CLASS_M560 BIT(1) |
| #define HIDPP_QUIRK_CLASS_K400 BIT(2) |
| #define HIDPP_QUIRK_CLASS_G920 BIT(3) |
| #define HIDPP_QUIRK_CLASS_K750 BIT(4) |
| |
| /* bits 2..20 are reserved for classes */ |
| /* #define HIDPP_QUIRK_CONNECT_EVENTS BIT(21) disabled */ |
| #define HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS BIT(22) |
| #define HIDPP_QUIRK_NO_HIDINPUT BIT(23) |
| #define HIDPP_QUIRK_FORCE_OUTPUT_REPORTS BIT(24) |
| #define HIDPP_QUIRK_UNIFYING BIT(25) |
| |
| #define HIDPP_QUIRK_DELAYED_INIT HIDPP_QUIRK_NO_HIDINPUT |
| |
| #define HIDPP_CAPABILITY_HIDPP10_BATTERY BIT(0) |
| #define HIDPP_CAPABILITY_HIDPP20_BATTERY BIT(1) |
| #define HIDPP_CAPABILITY_BATTERY_MILEAGE BIT(2) |
| #define HIDPP_CAPABILITY_BATTERY_LEVEL_STATUS BIT(3) |
| |
| /* |
| * There are two hidpp protocols in use, the first version hidpp10 is known |
| * as register access protocol or RAP, the second version hidpp20 is known as |
| * feature access protocol or FAP |
| * |
| * Most older devices (including the Unifying usb receiver) use the RAP protocol |
| * where as most newer devices use the FAP protocol. Both protocols are |
| * compatible with the underlying transport, which could be usb, Unifiying, or |
| * bluetooth. The message lengths are defined by the hid vendor specific report |
| * descriptor for the HIDPP_SHORT report type (total message lenth 7 bytes) and |
| * the HIDPP_LONG report type (total message length 20 bytes) |
| * |
| * The RAP protocol uses both report types, whereas the FAP only uses HIDPP_LONG |
| * messages. The Unifying receiver itself responds to RAP messages (device index |
| * is 0xFF for the receiver), and all messages (short or long) with a device |
| * index between 1 and 6 are passed untouched to the corresponding paired |
| * Unifying device. |
| * |
| * The paired device can be RAP or FAP, it will receive the message untouched |
| * from the Unifiying receiver. |
| */ |
| |
| struct fap { |
| u8 feature_index; |
| u8 funcindex_clientid; |
| u8 params[HIDPP_REPORT_VERY_LONG_LENGTH - 4U]; |
| }; |
| |
| struct rap { |
| u8 sub_id; |
| u8 reg_address; |
| u8 params[HIDPP_REPORT_VERY_LONG_LENGTH - 4U]; |
| }; |
| |
| struct hidpp_report { |
| u8 report_id; |
| u8 device_index; |
| union { |
| struct fap fap; |
| struct rap rap; |
| u8 rawbytes[sizeof(struct fap)]; |
| }; |
| } __packed; |
| |
| struct hidpp_battery { |
| u8 feature_index; |
| u8 solar_feature_index; |
| struct power_supply_desc desc; |
| struct power_supply *ps; |
| char name[64]; |
| int status; |
| int capacity; |
| int level; |
| bool online; |
| }; |
| |
| struct hidpp_device { |
| struct hid_device *hid_dev; |
| struct mutex send_mutex; |
| void *send_receive_buf; |
| char *name; /* will never be NULL and should not be freed */ |
| wait_queue_head_t wait; |
| bool answer_available; |
| u8 protocol_major; |
| u8 protocol_minor; |
| |
| void *private_data; |
| |
| struct work_struct work; |
| struct kfifo delayed_work_fifo; |
| atomic_t connected; |
| struct input_dev *delayed_input; |
| |
| unsigned long quirks; |
| unsigned long capabilities; |
| |
| struct hidpp_battery battery; |
| }; |
| |
| /* HID++ 1.0 error codes */ |
| #define HIDPP_ERROR 0x8f |
| #define HIDPP_ERROR_SUCCESS 0x00 |
| #define HIDPP_ERROR_INVALID_SUBID 0x01 |
| #define HIDPP_ERROR_INVALID_ADRESS 0x02 |
| #define HIDPP_ERROR_INVALID_VALUE 0x03 |
| #define HIDPP_ERROR_CONNECT_FAIL 0x04 |
| #define HIDPP_ERROR_TOO_MANY_DEVICES 0x05 |
| #define HIDPP_ERROR_ALREADY_EXISTS 0x06 |
| #define HIDPP_ERROR_BUSY 0x07 |
| #define HIDPP_ERROR_UNKNOWN_DEVICE 0x08 |
| #define HIDPP_ERROR_RESOURCE_ERROR 0x09 |
| #define HIDPP_ERROR_REQUEST_UNAVAILABLE 0x0a |
| #define HIDPP_ERROR_INVALID_PARAM_VALUE 0x0b |
| #define HIDPP_ERROR_WRONG_PIN_CODE 0x0c |
| /* HID++ 2.0 error codes */ |
| #define HIDPP20_ERROR 0xff |
| |
| static void hidpp_connect_event(struct hidpp_device *hidpp_dev); |
| |
| static int __hidpp_send_report(struct hid_device *hdev, |
| struct hidpp_report *hidpp_report) |
| { |
| struct hidpp_device *hidpp = hid_get_drvdata(hdev); |
| int fields_count, ret; |
| |
| hidpp = hid_get_drvdata(hdev); |
| |
| switch (hidpp_report->report_id) { |
| case REPORT_ID_HIDPP_SHORT: |
| fields_count = HIDPP_REPORT_SHORT_LENGTH; |
| break; |
| case REPORT_ID_HIDPP_LONG: |
| fields_count = HIDPP_REPORT_LONG_LENGTH; |
| break; |
| case REPORT_ID_HIDPP_VERY_LONG: |
| fields_count = HIDPP_REPORT_VERY_LONG_LENGTH; |
| break; |
| default: |
| return -ENODEV; |
| } |
| |
| /* |
| * set the device_index as the receiver, it will be overwritten by |
| * hid_hw_request if needed |
| */ |
| hidpp_report->device_index = 0xff; |
| |
| if (hidpp->quirks & HIDPP_QUIRK_FORCE_OUTPUT_REPORTS) { |
| ret = hid_hw_output_report(hdev, (u8 *)hidpp_report, fields_count); |
| } else { |
| ret = hid_hw_raw_request(hdev, hidpp_report->report_id, |
| (u8 *)hidpp_report, fields_count, HID_OUTPUT_REPORT, |
| HID_REQ_SET_REPORT); |
| } |
| |
| return ret == fields_count ? 0 : -1; |
| } |
| |
| /** |
| * hidpp_send_message_sync() returns 0 in case of success, and something else |
| * in case of a failure. |
| * - If ' something else' is positive, that means that an error has been raised |
| * by the protocol itself. |
| * - If ' something else' is negative, that means that we had a classic error |
| * (-ENOMEM, -EPIPE, etc...) |
| */ |
| static int hidpp_send_message_sync(struct hidpp_device *hidpp, |
| struct hidpp_report *message, |
| struct hidpp_report *response) |
| { |
| int ret; |
| |
| mutex_lock(&hidpp->send_mutex); |
| |
| hidpp->send_receive_buf = response; |
| hidpp->answer_available = false; |
| |
| /* |
| * So that we can later validate the answer when it arrives |
| * in hidpp_raw_event |
| */ |
| *response = *message; |
| |
| ret = __hidpp_send_report(hidpp->hid_dev, message); |
| |
| if (ret) { |
| dbg_hid("__hidpp_send_report returned err: %d\n", ret); |
| memset(response, 0, sizeof(struct hidpp_report)); |
| goto exit; |
| } |
| |
| if (!wait_event_timeout(hidpp->wait, hidpp->answer_available, |
| 5*HZ)) { |
| dbg_hid("%s:timeout waiting for response\n", __func__); |
| memset(response, 0, sizeof(struct hidpp_report)); |
| ret = -ETIMEDOUT; |
| } |
| |
| if (response->report_id == REPORT_ID_HIDPP_SHORT && |
| response->rap.sub_id == HIDPP_ERROR) { |
| ret = response->rap.params[1]; |
| dbg_hid("%s:got hidpp error %02X\n", __func__, ret); |
| goto exit; |
| } |
| |
| if ((response->report_id == REPORT_ID_HIDPP_LONG || |
| response->report_id == REPORT_ID_HIDPP_VERY_LONG) && |
| response->fap.feature_index == HIDPP20_ERROR) { |
| ret = response->fap.params[1]; |
| dbg_hid("%s:got hidpp 2.0 error %02X\n", __func__, ret); |
| goto exit; |
| } |
| |
| exit: |
| mutex_unlock(&hidpp->send_mutex); |
| return ret; |
| |
| } |
| |
| static int hidpp_send_fap_command_sync(struct hidpp_device *hidpp, |
| u8 feat_index, u8 funcindex_clientid, u8 *params, int param_count, |
| struct hidpp_report *response) |
| { |
| struct hidpp_report *message; |
| int ret; |
| |
| if (param_count > sizeof(message->fap.params)) |
| return -EINVAL; |
| |
| message = kzalloc(sizeof(struct hidpp_report), GFP_KERNEL); |
| if (!message) |
| return -ENOMEM; |
| |
| if (param_count > (HIDPP_REPORT_LONG_LENGTH - 4)) |
| message->report_id = REPORT_ID_HIDPP_VERY_LONG; |
| else |
| message->report_id = REPORT_ID_HIDPP_LONG; |
| message->fap.feature_index = feat_index; |
| message->fap.funcindex_clientid = funcindex_clientid; |
| memcpy(&message->fap.params, params, param_count); |
| |
| ret = hidpp_send_message_sync(hidpp, message, response); |
| kfree(message); |
| return ret; |
| } |
| |
| static int hidpp_send_rap_command_sync(struct hidpp_device *hidpp_dev, |
| u8 report_id, u8 sub_id, u8 reg_address, u8 *params, int param_count, |
| struct hidpp_report *response) |
| { |
| struct hidpp_report *message; |
| int ret, max_count; |
| |
| switch (report_id) { |
| case REPORT_ID_HIDPP_SHORT: |
| max_count = HIDPP_REPORT_SHORT_LENGTH - 4; |
| break; |
| case REPORT_ID_HIDPP_LONG: |
| max_count = HIDPP_REPORT_LONG_LENGTH - 4; |
| break; |
| case REPORT_ID_HIDPP_VERY_LONG: |
| max_count = HIDPP_REPORT_VERY_LONG_LENGTH - 4; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| if (param_count > max_count) |
| return -EINVAL; |
| |
| message = kzalloc(sizeof(struct hidpp_report), GFP_KERNEL); |
| if (!message) |
| return -ENOMEM; |
| message->report_id = report_id; |
| message->rap.sub_id = sub_id; |
| message->rap.reg_address = reg_address; |
| memcpy(&message->rap.params, params, param_count); |
| |
| ret = hidpp_send_message_sync(hidpp_dev, message, response); |
| kfree(message); |
| return ret; |
| } |
| |
| static void delayed_work_cb(struct work_struct *work) |
| { |
| struct hidpp_device *hidpp = container_of(work, struct hidpp_device, |
| work); |
| hidpp_connect_event(hidpp); |
| } |
| |
| static inline bool hidpp_match_answer(struct hidpp_report *question, |
| struct hidpp_report *answer) |
| { |
| return (answer->fap.feature_index == question->fap.feature_index) && |
| (answer->fap.funcindex_clientid == question->fap.funcindex_clientid); |
| } |
| |
| static inline bool hidpp_match_error(struct hidpp_report *question, |
| struct hidpp_report *answer) |
| { |
| return ((answer->rap.sub_id == HIDPP_ERROR) || |
| (answer->fap.feature_index == HIDPP20_ERROR)) && |
| (answer->fap.funcindex_clientid == question->fap.feature_index) && |
| (answer->fap.params[0] == question->fap.funcindex_clientid); |
| } |
| |
| static inline bool hidpp_report_is_connect_event(struct hidpp_report *report) |
| { |
| return (report->report_id == REPORT_ID_HIDPP_SHORT) && |
| (report->rap.sub_id == 0x41); |
| } |
| |
| /** |
| * hidpp_prefix_name() prefixes the current given name with "Logitech ". |
| */ |
| static void hidpp_prefix_name(char **name, int name_length) |
| { |
| #define PREFIX_LENGTH 9 /* "Logitech " */ |
| |
| int new_length; |
| char *new_name; |
| |
| if (name_length > PREFIX_LENGTH && |
| strncmp(*name, "Logitech ", PREFIX_LENGTH) == 0) |
| /* The prefix has is already in the name */ |
| return; |
| |
| new_length = PREFIX_LENGTH + name_length; |
| new_name = kzalloc(new_length, GFP_KERNEL); |
| if (!new_name) |
| return; |
| |
| snprintf(new_name, new_length, "Logitech %s", *name); |
| |
| kfree(*name); |
| |
| *name = new_name; |
| } |
| |
| /* -------------------------------------------------------------------------- */ |
| /* HIDP++ 1.0 commands */ |
| /* -------------------------------------------------------------------------- */ |
| |
| #define HIDPP_SET_REGISTER 0x80 |
| #define HIDPP_GET_REGISTER 0x81 |
| #define HIDPP_SET_LONG_REGISTER 0x82 |
| #define HIDPP_GET_LONG_REGISTER 0x83 |
| |
| #define HIDPP_REG_GENERAL 0x00 |
| |
| static int hidpp10_enable_battery_reporting(struct hidpp_device *hidpp_dev) |
| { |
| struct hidpp_report response; |
| int ret; |
| u8 params[3] = { 0 }; |
| |
| ret = hidpp_send_rap_command_sync(hidpp_dev, |
| REPORT_ID_HIDPP_SHORT, |
| HIDPP_GET_REGISTER, |
| HIDPP_REG_GENERAL, |
| NULL, 0, &response); |
| if (ret) |
| return ret; |
| |
| memcpy(params, response.rap.params, 3); |
| |
| /* Set the battery bit */ |
| params[0] |= BIT(4); |
| |
| return hidpp_send_rap_command_sync(hidpp_dev, |
| REPORT_ID_HIDPP_SHORT, |
| HIDPP_SET_REGISTER, |
| HIDPP_REG_GENERAL, |
| params, 3, &response); |
| } |
| |
| #define HIDPP_REG_BATTERY_STATUS 0x07 |
| |
| static int hidpp10_battery_status_map_level(u8 param) |
| { |
| int level; |
| |
| switch (param) { |
| case 1 ... 2: |
| level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; |
| break; |
| case 3 ... 4: |
| level = POWER_SUPPLY_CAPACITY_LEVEL_LOW; |
| break; |
| case 5 ... 6: |
| level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; |
| break; |
| case 7: |
| level = POWER_SUPPLY_CAPACITY_LEVEL_HIGH; |
| break; |
| default: |
| level = POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN; |
| } |
| |
| return level; |
| } |
| |
| static int hidpp10_battery_status_map_status(u8 param) |
| { |
| int status; |
| |
| switch (param) { |
| case 0x00: |
| /* discharging (in use) */ |
| status = POWER_SUPPLY_STATUS_DISCHARGING; |
| break; |
| case 0x21: /* (standard) charging */ |
| case 0x24: /* fast charging */ |
| case 0x25: /* slow charging */ |
| status = POWER_SUPPLY_STATUS_CHARGING; |
| break; |
| case 0x26: /* topping charge */ |
| case 0x22: /* charge complete */ |
| status = POWER_SUPPLY_STATUS_FULL; |
| break; |
| case 0x20: /* unknown */ |
| status = POWER_SUPPLY_STATUS_UNKNOWN; |
| break; |
| /* |
| * 0x01...0x1F = reserved (not charging) |
| * 0x23 = charging error |
| * 0x27..0xff = reserved |
| */ |
| default: |
| status = POWER_SUPPLY_STATUS_NOT_CHARGING; |
| break; |
| } |
| |
| return status; |
| } |
| |
| static int hidpp10_query_battery_status(struct hidpp_device *hidpp) |
| { |
| struct hidpp_report response; |
| int ret, status; |
| |
| ret = hidpp_send_rap_command_sync(hidpp, |
| REPORT_ID_HIDPP_SHORT, |
| HIDPP_GET_REGISTER, |
| HIDPP_REG_BATTERY_STATUS, |
| NULL, 0, &response); |
| if (ret) |
| return ret; |
| |
| hidpp->battery.level = |
| hidpp10_battery_status_map_level(response.rap.params[0]); |
| status = hidpp10_battery_status_map_status(response.rap.params[1]); |
| hidpp->battery.status = status; |
| /* the capacity is only available when discharging or full */ |
| hidpp->battery.online = status == POWER_SUPPLY_STATUS_DISCHARGING || |
| status == POWER_SUPPLY_STATUS_FULL; |
| |
| return 0; |
| } |
| |
| #define HIDPP_REG_BATTERY_MILEAGE 0x0D |
| |
| static int hidpp10_battery_mileage_map_status(u8 param) |
| { |
| int status; |
| |
| switch (param >> 6) { |
| case 0x00: |
| /* discharging (in use) */ |
| status = POWER_SUPPLY_STATUS_DISCHARGING; |
| break; |
| case 0x01: /* charging */ |
| status = POWER_SUPPLY_STATUS_CHARGING; |
| break; |
| case 0x02: /* charge complete */ |
| status = POWER_SUPPLY_STATUS_FULL; |
| break; |
| /* |
| * 0x03 = charging error |
| */ |
| default: |
| status = POWER_SUPPLY_STATUS_NOT_CHARGING; |
| break; |
| } |
| |
| return status; |
| } |
| |
| static int hidpp10_query_battery_mileage(struct hidpp_device *hidpp) |
| { |
| struct hidpp_report response; |
| int ret, status; |
| |
| ret = hidpp_send_rap_command_sync(hidpp, |
| REPORT_ID_HIDPP_SHORT, |
| HIDPP_GET_REGISTER, |
| HIDPP_REG_BATTERY_MILEAGE, |
| NULL, 0, &response); |
| if (ret) |
| return ret; |
| |
| hidpp->battery.capacity = response.rap.params[0]; |
| status = hidpp10_battery_mileage_map_status(response.rap.params[2]); |
| hidpp->battery.status = status; |
| /* the capacity is only available when discharging or full */ |
| hidpp->battery.online = status == POWER_SUPPLY_STATUS_DISCHARGING || |
| status == POWER_SUPPLY_STATUS_FULL; |
| |
| return 0; |
| } |
| |
| static int hidpp10_battery_event(struct hidpp_device *hidpp, u8 *data, int size) |
| { |
| struct hidpp_report *report = (struct hidpp_report *)data; |
| int status, capacity, level; |
| bool changed; |
| |
| if (report->report_id != REPORT_ID_HIDPP_SHORT) |
| return 0; |
| |
| switch (report->rap.sub_id) { |
| case HIDPP_REG_BATTERY_STATUS: |
| capacity = hidpp->battery.capacity; |
| level = hidpp10_battery_status_map_level(report->rawbytes[1]); |
| status = hidpp10_battery_status_map_status(report->rawbytes[2]); |
| break; |
| case HIDPP_REG_BATTERY_MILEAGE: |
| capacity = report->rap.params[0]; |
| level = hidpp->battery.level; |
| status = hidpp10_battery_mileage_map_status(report->rawbytes[3]); |
| break; |
| default: |
| return 0; |
| } |
| |
| changed = capacity != hidpp->battery.capacity || |
| level != hidpp->battery.level || |
| status != hidpp->battery.status; |
| |
| /* the capacity is only available when discharging or full */ |
| hidpp->battery.online = status == POWER_SUPPLY_STATUS_DISCHARGING || |
| status == POWER_SUPPLY_STATUS_FULL; |
| |
| if (changed) { |
| hidpp->battery.level = level; |
| hidpp->battery.status = status; |
| if (hidpp->battery.ps) |
| power_supply_changed(hidpp->battery.ps); |
| } |
| |
| return 0; |
| } |
| |
| #define HIDPP_REG_PAIRING_INFORMATION 0xB5 |
| #define HIDPP_EXTENDED_PAIRING 0x30 |
| #define HIDPP_DEVICE_NAME 0x40 |
| |
| static char *hidpp_unifying_get_name(struct hidpp_device *hidpp_dev) |
| { |
| struct hidpp_report response; |
| int ret; |
| u8 params[1] = { HIDPP_DEVICE_NAME }; |
| char *name; |
| int len; |
| |
| ret = hidpp_send_rap_command_sync(hidpp_dev, |
| REPORT_ID_HIDPP_SHORT, |
| HIDPP_GET_LONG_REGISTER, |
| HIDPP_REG_PAIRING_INFORMATION, |
| params, 1, &response); |
| if (ret) |
| return NULL; |
| |
| len = response.rap.params[1]; |
| |
| if (2 + len > sizeof(response.rap.params)) |
| return NULL; |
| |
| name = kzalloc(len + 1, GFP_KERNEL); |
| if (!name) |
| return NULL; |
| |
| memcpy(name, &response.rap.params[2], len); |
| |
| /* include the terminating '\0' */ |
| hidpp_prefix_name(&name, len + 1); |
| |
| return name; |
| } |
| |
| static int hidpp_unifying_get_serial(struct hidpp_device *hidpp, u32 *serial) |
| { |
| struct hidpp_report response; |
| int ret; |
| u8 params[1] = { HIDPP_EXTENDED_PAIRING }; |
| |
| ret = hidpp_send_rap_command_sync(hidpp, |
| REPORT_ID_HIDPP_SHORT, |
| HIDPP_GET_LONG_REGISTER, |
| HIDPP_REG_PAIRING_INFORMATION, |
| params, 1, &response); |
| if (ret) |
| return ret; |
| |
| /* |
| * We don't care about LE or BE, we will output it as a string |
| * with %4phD, so we need to keep the order. |
| */ |
| *serial = *((u32 *)&response.rap.params[1]); |
| return 0; |
| } |
| |
| static int hidpp_unifying_init(struct hidpp_device *hidpp) |
| { |
| struct hid_device *hdev = hidpp->hid_dev; |
| const char *name; |
| u32 serial; |
| int ret; |
| |
| ret = hidpp_unifying_get_serial(hidpp, &serial); |
| if (ret) |
| return ret; |
| |
| snprintf(hdev->uniq, sizeof(hdev->uniq), "%04x-%4phD", |
| hdev->product, &serial); |
| dbg_hid("HID++ Unifying: Got serial: %s\n", hdev->uniq); |
| |
| name = hidpp_unifying_get_name(hidpp); |
| if (!name) |
| return -EIO; |
| |
| snprintf(hdev->name, sizeof(hdev->name), "%s", name); |
| dbg_hid("HID++ Unifying: Got name: %s\n", name); |
| |
| kfree(name); |
| return 0; |
| } |
| |
| /* -------------------------------------------------------------------------- */ |
| /* 0x0000: Root */ |
| /* -------------------------------------------------------------------------- */ |
| |
| #define HIDPP_PAGE_ROOT 0x0000 |
| #define HIDPP_PAGE_ROOT_IDX 0x00 |
| |
| #define CMD_ROOT_GET_FEATURE 0x01 |
| #define CMD_ROOT_GET_PROTOCOL_VERSION 0x11 |
| |
| static int hidpp_root_get_feature(struct hidpp_device *hidpp, u16 feature, |
| u8 *feature_index, u8 *feature_type) |
| { |
| struct hidpp_report response; |
| int ret; |
| u8 params[2] = { feature >> 8, feature & 0x00FF }; |
| |
| ret = hidpp_send_fap_command_sync(hidpp, |
| HIDPP_PAGE_ROOT_IDX, |
| CMD_ROOT_GET_FEATURE, |
| params, 2, &response); |
| if (ret) |
| return ret; |
| |
| if (response.fap.params[0] == 0) |
| return -ENOENT; |
| |
| *feature_index = response.fap.params[0]; |
| *feature_type = response.fap.params[1]; |
| |
| return ret; |
| } |
| |
| static int hidpp_root_get_protocol_version(struct hidpp_device *hidpp) |
| { |
| struct hidpp_report response; |
| int ret; |
| |
| ret = hidpp_send_fap_command_sync(hidpp, |
| HIDPP_PAGE_ROOT_IDX, |
| CMD_ROOT_GET_PROTOCOL_VERSION, |
| NULL, 0, &response); |
| |
| if (ret == HIDPP_ERROR_INVALID_SUBID) { |
| hidpp->protocol_major = 1; |
| hidpp->protocol_minor = 0; |
| return 0; |
| } |
| |
| /* the device might not be connected */ |
| if (ret == HIDPP_ERROR_RESOURCE_ERROR) |
| return -EIO; |
| |
| if (ret > 0) { |
| hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", |
| __func__, ret); |
| return -EPROTO; |
| } |
| if (ret) |
| return ret; |
| |
| hidpp->protocol_major = response.fap.params[0]; |
| hidpp->protocol_minor = response.fap.params[1]; |
| |
| return ret; |
| } |
| |
| static bool hidpp_is_connected(struct hidpp_device *hidpp) |
| { |
| int ret; |
| |
| ret = hidpp_root_get_protocol_version(hidpp); |
| if (!ret) |
| hid_dbg(hidpp->hid_dev, "HID++ %u.%u device connected.\n", |
| hidpp->protocol_major, hidpp->protocol_minor); |
| return ret == 0; |
| } |
| |
| /* -------------------------------------------------------------------------- */ |
| /* 0x0005: GetDeviceNameType */ |
| /* -------------------------------------------------------------------------- */ |
| |
| #define HIDPP_PAGE_GET_DEVICE_NAME_TYPE 0x0005 |
| |
| #define CMD_GET_DEVICE_NAME_TYPE_GET_COUNT 0x01 |
| #define CMD_GET_DEVICE_NAME_TYPE_GET_DEVICE_NAME 0x11 |
| #define CMD_GET_DEVICE_NAME_TYPE_GET_TYPE 0x21 |
| |
| static int hidpp_devicenametype_get_count(struct hidpp_device *hidpp, |
| u8 feature_index, u8 *nameLength) |
| { |
| struct hidpp_report response; |
| int ret; |
| |
| ret = hidpp_send_fap_command_sync(hidpp, feature_index, |
| CMD_GET_DEVICE_NAME_TYPE_GET_COUNT, NULL, 0, &response); |
| |
| if (ret > 0) { |
| hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", |
| __func__, ret); |
| return -EPROTO; |
| } |
| if (ret) |
| return ret; |
| |
| *nameLength = response.fap.params[0]; |
| |
| return ret; |
| } |
| |
| static int hidpp_devicenametype_get_device_name(struct hidpp_device *hidpp, |
| u8 feature_index, u8 char_index, char *device_name, int len_buf) |
| { |
| struct hidpp_report response; |
| int ret, i; |
| int count; |
| |
| ret = hidpp_send_fap_command_sync(hidpp, feature_index, |
| CMD_GET_DEVICE_NAME_TYPE_GET_DEVICE_NAME, &char_index, 1, |
| &response); |
| |
| if (ret > 0) { |
| hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", |
| __func__, ret); |
| return -EPROTO; |
| } |
| if (ret) |
| return ret; |
| |
| switch (response.report_id) { |
| case REPORT_ID_HIDPP_VERY_LONG: |
| count = HIDPP_REPORT_VERY_LONG_LENGTH - 4; |
| break; |
| case REPORT_ID_HIDPP_LONG: |
| count = HIDPP_REPORT_LONG_LENGTH - 4; |
| break; |
| case REPORT_ID_HIDPP_SHORT: |
| count = HIDPP_REPORT_SHORT_LENGTH - 4; |
| break; |
| default: |
| return -EPROTO; |
| } |
| |
| if (len_buf < count) |
| count = len_buf; |
| |
| for (i = 0; i < count; i++) |
| device_name[i] = response.fap.params[i]; |
| |
| return count; |
| } |
| |
| static char *hidpp_get_device_name(struct hidpp_device *hidpp) |
| { |
| u8 feature_type; |
| u8 feature_index; |
| u8 __name_length; |
| char *name; |
| unsigned index = 0; |
| int ret; |
| |
| ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_GET_DEVICE_NAME_TYPE, |
| &feature_index, &feature_type); |
| if (ret) |
| return NULL; |
| |
| ret = hidpp_devicenametype_get_count(hidpp, feature_index, |
| &__name_length); |
| if (ret) |
| return NULL; |
| |
| name = kzalloc(__name_length + 1, GFP_KERNEL); |
| if (!name) |
| return NULL; |
| |
| while (index < __name_length) { |
| ret = hidpp_devicenametype_get_device_name(hidpp, |
| feature_index, index, name + index, |
| __name_length - index); |
| if (ret <= 0) { |
| kfree(name); |
| return NULL; |
| } |
| index += ret; |
| } |
| |
| /* include the terminating '\0' */ |
| hidpp_prefix_name(&name, __name_length + 1); |
| |
| return name; |
| } |
| |
| /* -------------------------------------------------------------------------- */ |
| /* 0x1000: Battery level status */ |
| /* -------------------------------------------------------------------------- */ |
| |
| #define HIDPP_PAGE_BATTERY_LEVEL_STATUS 0x1000 |
| |
| #define CMD_BATTERY_LEVEL_STATUS_GET_BATTERY_LEVEL_STATUS 0x00 |
| #define CMD_BATTERY_LEVEL_STATUS_GET_BATTERY_CAPABILITY 0x10 |
| |
| #define EVENT_BATTERY_LEVEL_STATUS_BROADCAST 0x00 |
| |
| #define FLAG_BATTERY_LEVEL_DISABLE_OSD BIT(0) |
| #define FLAG_BATTERY_LEVEL_MILEAGE BIT(1) |
| #define FLAG_BATTERY_LEVEL_RECHARGEABLE BIT(2) |
| |
| static int hidpp_map_battery_level(int capacity) |
| { |
| if (capacity < 11) |
| return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; |
| else if (capacity < 31) |
| return POWER_SUPPLY_CAPACITY_LEVEL_LOW; |
| else if (capacity < 81) |
| return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; |
| return POWER_SUPPLY_CAPACITY_LEVEL_FULL; |
| } |
| |
| static int hidpp20_batterylevel_map_status_capacity(u8 data[3], int *capacity, |
| int *next_capacity, |
| int *level) |
| { |
| int status; |
| |
| *capacity = data[0]; |
| *next_capacity = data[1]; |
| *level = POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN; |
| |
| /* When discharging, we can rely on the device reported capacity. |
| * For all other states the device reports 0 (unknown). |
| */ |
| switch (data[2]) { |
| case 0: /* discharging (in use) */ |
| status = POWER_SUPPLY_STATUS_DISCHARGING; |
| *level = hidpp_map_battery_level(*capacity); |
| break; |
| case 1: /* recharging */ |
| status = POWER_SUPPLY_STATUS_CHARGING; |
| break; |
| case 2: /* charge in final stage */ |
| status = POWER_SUPPLY_STATUS_CHARGING; |
| break; |
| case 3: /* charge complete */ |
| status = POWER_SUPPLY_STATUS_FULL; |
| *level = POWER_SUPPLY_CAPACITY_LEVEL_FULL; |
| *capacity = 100; |
| break; |
| case 4: /* recharging below optimal speed */ |
| status = POWER_SUPPLY_STATUS_CHARGING; |
| break; |
| /* 5 = invalid battery type |
| 6 = thermal error |
| 7 = other charging error */ |
| default: |
| status = POWER_SUPPLY_STATUS_NOT_CHARGING; |
| break; |
| } |
| |
| return status; |
| } |
| |
| static int hidpp20_batterylevel_get_battery_capacity(struct hidpp_device *hidpp, |
| u8 feature_index, |
| int *status, |
| int *capacity, |
| int *next_capacity, |
| int *level) |
| { |
| struct hidpp_report response; |
| int ret; |
| u8 *params = (u8 *)response.fap.params; |
| |
| ret = hidpp_send_fap_command_sync(hidpp, feature_index, |
| CMD_BATTERY_LEVEL_STATUS_GET_BATTERY_LEVEL_STATUS, |
| NULL, 0, &response); |
| if (ret > 0) { |
| hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", |
| __func__, ret); |
| return -EPROTO; |
| } |
| if (ret) |
| return ret; |
| |
| *status = hidpp20_batterylevel_map_status_capacity(params, capacity, |
| next_capacity, |
| level); |
| |
| return 0; |
| } |
| |
| static int hidpp20_batterylevel_get_battery_info(struct hidpp_device *hidpp, |
| u8 feature_index) |
| { |
| struct hidpp_report response; |
| int ret; |
| u8 *params = (u8 *)response.fap.params; |
| unsigned int level_count, flags; |
| |
| ret = hidpp_send_fap_command_sync(hidpp, feature_index, |
| CMD_BATTERY_LEVEL_STATUS_GET_BATTERY_CAPABILITY, |
| NULL, 0, &response); |
| if (ret > 0) { |
| hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", |
| __func__, ret); |
| return -EPROTO; |
| } |
| if (ret) |
| return ret; |
| |
| level_count = params[0]; |
| flags = params[1]; |
| |
| if (level_count < 10 || !(flags & FLAG_BATTERY_LEVEL_MILEAGE)) |
| hidpp->capabilities |= HIDPP_CAPABILITY_BATTERY_LEVEL_STATUS; |
| else |
| hidpp->capabilities |= HIDPP_CAPABILITY_BATTERY_MILEAGE; |
| |
| return 0; |
| } |
| |
| static int hidpp20_query_battery_info(struct hidpp_device *hidpp) |
| { |
| u8 feature_type; |
| int ret; |
| int status, capacity, next_capacity, level; |
| |
| if (hidpp->battery.feature_index == 0xff) { |
| ret = hidpp_root_get_feature(hidpp, |
| HIDPP_PAGE_BATTERY_LEVEL_STATUS, |
| &hidpp->battery.feature_index, |
| &feature_type); |
| if (ret) |
| return ret; |
| } |
| |
| ret = hidpp20_batterylevel_get_battery_capacity(hidpp, |
| hidpp->battery.feature_index, |
| &status, &capacity, |
| &next_capacity, &level); |
| if (ret) |
| return ret; |
| |
| ret = hidpp20_batterylevel_get_battery_info(hidpp, |
| hidpp->battery.feature_index); |
| if (ret) |
| return ret; |
| |
| hidpp->battery.status = status; |
| hidpp->battery.capacity = capacity; |
| hidpp->battery.level = level; |
| /* the capacity is only available when discharging or full */ |
| hidpp->battery.online = status == POWER_SUPPLY_STATUS_DISCHARGING || |
| status == POWER_SUPPLY_STATUS_FULL; |
| |
| return 0; |
| } |
| |
| static int hidpp20_battery_event(struct hidpp_device *hidpp, |
| u8 *data, int size) |
| { |
| struct hidpp_report *report = (struct hidpp_report *)data; |
| int status, capacity, next_capacity, level; |
| bool changed; |
| |
| if (report->fap.feature_index != hidpp->battery.feature_index || |
| report->fap.funcindex_clientid != EVENT_BATTERY_LEVEL_STATUS_BROADCAST) |
| return 0; |
| |
| status = hidpp20_batterylevel_map_status_capacity(report->fap.params, |
| &capacity, |
| &next_capacity, |
| &level); |
| |
| /* the capacity is only available when discharging or full */ |
| hidpp->battery.online = status == POWER_SUPPLY_STATUS_DISCHARGING || |
| status == POWER_SUPPLY_STATUS_FULL; |
| |
| changed = capacity != hidpp->battery.capacity || |
| level != hidpp->battery.level || |
| status != hidpp->battery.status; |
| |
| if (changed) { |
| hidpp->battery.level = level; |
| hidpp->battery.capacity = capacity; |
| hidpp->battery.status = status; |
| if (hidpp->battery.ps) |
| power_supply_changed(hidpp->battery.ps); |
| } |
| |
| return 0; |
| } |
| |
| static enum power_supply_property hidpp_battery_props[] = { |
| POWER_SUPPLY_PROP_ONLINE, |
| POWER_SUPPLY_PROP_STATUS, |
| POWER_SUPPLY_PROP_SCOPE, |
| POWER_SUPPLY_PROP_MODEL_NAME, |
| POWER_SUPPLY_PROP_MANUFACTURER, |
| POWER_SUPPLY_PROP_SERIAL_NUMBER, |
| 0, /* placeholder for POWER_SUPPLY_PROP_CAPACITY, */ |
| 0, /* placeholder for POWER_SUPPLY_PROP_CAPACITY_LEVEL, */ |
| }; |
| |
| static int hidpp_battery_get_property(struct power_supply *psy, |
| enum power_supply_property psp, |
| union power_supply_propval *val) |
| { |
| struct hidpp_device *hidpp = power_supply_get_drvdata(psy); |
| int ret = 0; |
| |
| switch(psp) { |
| case POWER_SUPPLY_PROP_STATUS: |
| val->intval = hidpp->battery.status; |
| break; |
| case POWER_SUPPLY_PROP_CAPACITY: |
| val->intval = hidpp->battery.capacity; |
| break; |
| case POWER_SUPPLY_PROP_CAPACITY_LEVEL: |
| val->intval = hidpp->battery.level; |
| break; |
| case POWER_SUPPLY_PROP_SCOPE: |
| val->intval = POWER_SUPPLY_SCOPE_DEVICE; |
| break; |
| case POWER_SUPPLY_PROP_ONLINE: |
| val->intval = hidpp->battery.online; |
| break; |
| case POWER_SUPPLY_PROP_MODEL_NAME: |
| if (!strncmp(hidpp->name, "Logitech ", 9)) |
| val->strval = hidpp->name + 9; |
| else |
| val->strval = hidpp->name; |
| break; |
| case POWER_SUPPLY_PROP_MANUFACTURER: |
| val->strval = "Logitech"; |
| break; |
| case POWER_SUPPLY_PROP_SERIAL_NUMBER: |
| val->strval = hidpp->hid_dev->uniq; |
| break; |
| default: |
| ret = -EINVAL; |
| break; |
| } |
| |
| return ret; |
| } |
| |
| /* -------------------------------------------------------------------------- */ |
| /* 0x4301: Solar Keyboard */ |
| /* -------------------------------------------------------------------------- */ |
| |
| #define HIDPP_PAGE_SOLAR_KEYBOARD 0x4301 |
| |
| #define CMD_SOLAR_SET_LIGHT_MEASURE 0x00 |
| |
| #define EVENT_SOLAR_BATTERY_BROADCAST 0x00 |
| #define EVENT_SOLAR_BATTERY_LIGHT_MEASURE 0x10 |
| #define EVENT_SOLAR_CHECK_LIGHT_BUTTON 0x20 |
| |
| static int hidpp_solar_request_battery_event(struct hidpp_device *hidpp) |
| { |
| struct hidpp_report response; |
| u8 params[2] = { 1, 1 }; |
| u8 feature_type; |
| int ret; |
| |
| if (hidpp->battery.feature_index == 0xff) { |
| ret = hidpp_root_get_feature(hidpp, |
| HIDPP_PAGE_SOLAR_KEYBOARD, |
| &hidpp->battery.solar_feature_index, |
| &feature_type); |
| if (ret) |
| return ret; |
| } |
| |
| ret = hidpp_send_fap_command_sync(hidpp, |
| hidpp->battery.solar_feature_index, |
| CMD_SOLAR_SET_LIGHT_MEASURE, |
| params, 2, &response); |
| if (ret > 0) { |
| hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", |
| __func__, ret); |
| return -EPROTO; |
| } |
| if (ret) |
| return ret; |
| |
| hidpp->capabilities |= HIDPP_CAPABILITY_BATTERY_MILEAGE; |
| |
| return 0; |
| } |
| |
| static int hidpp_solar_battery_event(struct hidpp_device *hidpp, |
| u8 *data, int size) |
| { |
| struct hidpp_report *report = (struct hidpp_report *)data; |
| int capacity, lux, status; |
| u8 function; |
| |
| function = report->fap.funcindex_clientid; |
| |
| |
| if (report->fap.feature_index != hidpp->battery.solar_feature_index || |
| !(function == EVENT_SOLAR_BATTERY_BROADCAST || |
| function == EVENT_SOLAR_BATTERY_LIGHT_MEASURE || |
| function == EVENT_SOLAR_CHECK_LIGHT_BUTTON)) |
| return 0; |
| |
| capacity = report->fap.params[0]; |
| |
| switch (function) { |
| case EVENT_SOLAR_BATTERY_LIGHT_MEASURE: |
| lux = (report->fap.params[1] << 8) | report->fap.params[2]; |
| if (lux > 200) |
| status = POWER_SUPPLY_STATUS_CHARGING; |
| else |
| status = POWER_SUPPLY_STATUS_DISCHARGING; |
| break; |
| case EVENT_SOLAR_CHECK_LIGHT_BUTTON: |
| default: |
| if (capacity < hidpp->battery.capacity) |
| status = POWER_SUPPLY_STATUS_DISCHARGING; |
| else |
| status = POWER_SUPPLY_STATUS_CHARGING; |
| |
| } |
| |
| if (capacity == 100) |
| status = POWER_SUPPLY_STATUS_FULL; |
| |
| hidpp->battery.online = true; |
| if (capacity != hidpp->battery.capacity || |
| status != hidpp->battery.status) { |
| hidpp->battery.capacity = capacity; |
| hidpp->battery.status = status; |
| if (hidpp->battery.ps) |
| power_supply_changed(hidpp->battery.ps); |
| } |
| |
| return 0; |
| } |
| |
| /* -------------------------------------------------------------------------- */ |
| /* 0x6010: Touchpad FW items */ |
| /* -------------------------------------------------------------------------- */ |
| |
| #define HIDPP_PAGE_TOUCHPAD_FW_ITEMS 0x6010 |
| |
| #define CMD_TOUCHPAD_FW_ITEMS_SET 0x10 |
| |
| struct hidpp_touchpad_fw_items { |
| uint8_t presence; |
| uint8_t desired_state; |
| uint8_t state; |
| uint8_t persistent; |
| }; |
| |
| /** |
| * send a set state command to the device by reading the current items->state |
| * field. items is then filled with the current state. |
| */ |
| static int hidpp_touchpad_fw_items_set(struct hidpp_device *hidpp, |
| u8 feature_index, |
| struct hidpp_touchpad_fw_items *items) |
| { |
| struct hidpp_report response; |
| int ret; |
| u8 *params = (u8 *)response.fap.params; |
| |
| ret = hidpp_send_fap_command_sync(hidpp, feature_index, |
| CMD_TOUCHPAD_FW_ITEMS_SET, &items->state, 1, &response); |
| |
| if (ret > 0) { |
| hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", |
| __func__, ret); |
| return -EPROTO; |
| } |
| if (ret) |
| return ret; |
| |
| items->presence = params[0]; |
| items->desired_state = params[1]; |
| items->state = params[2]; |
| items->persistent = params[3]; |
| |
| return 0; |
| } |
| |
| /* -------------------------------------------------------------------------- */ |
| /* 0x6100: TouchPadRawXY */ |
| /* -------------------------------------------------------------------------- */ |
| |
| #define HIDPP_PAGE_TOUCHPAD_RAW_XY 0x6100 |
| |
| #define CMD_TOUCHPAD_GET_RAW_INFO 0x01 |
| #define CMD_TOUCHPAD_SET_RAW_REPORT_STATE 0x21 |
| |
| #define EVENT_TOUCHPAD_RAW_XY 0x00 |
| |
| #define TOUCHPAD_RAW_XY_ORIGIN_LOWER_LEFT 0x01 |
| #define TOUCHPAD_RAW_XY_ORIGIN_UPPER_LEFT 0x03 |
| |
| struct hidpp_touchpad_raw_info { |
| u16 x_size; |
| u16 y_size; |
| u8 z_range; |
| u8 area_range; |
| u8 timestamp_unit; |
| u8 maxcontacts; |
| u8 origin; |
| u16 res; |
| }; |
| |
| struct hidpp_touchpad_raw_xy_finger { |
| u8 contact_type; |
| u8 contact_status; |
| u16 x; |
| u16 y; |
| u8 z; |
| u8 area; |
| u8 finger_id; |
| }; |
| |
| struct hidpp_touchpad_raw_xy { |
| u16 timestamp; |
| struct hidpp_touchpad_raw_xy_finger fingers[2]; |
| u8 spurious_flag; |
| u8 end_of_frame; |
| u8 finger_count; |
| u8 button; |
| }; |
| |
| static int hidpp_touchpad_get_raw_info(struct hidpp_device *hidpp, |
| u8 feature_index, struct hidpp_touchpad_raw_info *raw_info) |
| { |
| struct hidpp_report response; |
| int ret; |
| u8 *params = (u8 *)response.fap.params; |
| |
| ret = hidpp_send_fap_command_sync(hidpp, feature_index, |
| CMD_TOUCHPAD_GET_RAW_INFO, NULL, 0, &response); |
| |
| if (ret > 0) { |
| hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", |
| __func__, ret); |
| return -EPROTO; |
| } |
| if (ret) |
| return ret; |
| |
| raw_info->x_size = get_unaligned_be16(¶ms[0]); |
| raw_info->y_size = get_unaligned_be16(¶ms[2]); |
| raw_info->z_range = params[4]; |
| raw_info->area_range = params[5]; |
| raw_info->maxcontacts = params[7]; |
| raw_info->origin = params[8]; |
| /* res is given in unit per inch */ |
| raw_info->res = get_unaligned_be16(¶ms[13]) * 2 / 51; |
| |
| return ret; |
| } |
| |
| static int hidpp_touchpad_set_raw_report_state(struct hidpp_device *hidpp_dev, |
| u8 feature_index, bool send_raw_reports, |
| bool sensor_enhanced_settings) |
| { |
| struct hidpp_report response; |
| |
| /* |
| * Params: |
| * bit 0 - enable raw |
| * bit 1 - 16bit Z, no area |
| * bit 2 - enhanced sensitivity |
| * bit 3 - width, height (4 bits each) instead of area |
| * bit 4 - send raw + gestures (degrades smoothness) |
| * remaining bits - reserved |
| */ |
| u8 params = send_raw_reports | (sensor_enhanced_settings << 2); |
| |
| return hidpp_send_fap_command_sync(hidpp_dev, feature_index, |
| CMD_TOUCHPAD_SET_RAW_REPORT_STATE, ¶ms, 1, &response); |
| } |
| |
| static void hidpp_touchpad_touch_event(u8 *data, |
| struct hidpp_touchpad_raw_xy_finger *finger) |
| { |
| u8 x_m = data[0] << 2; |
| u8 y_m = data[2] << 2; |
| |
| finger->x = x_m << 6 | data[1]; |
| finger->y = y_m << 6 | data[3]; |
| |
| finger->contact_type = data[0] >> 6; |
| finger->contact_status = data[2] >> 6; |
| |
| finger->z = data[4]; |
| finger->area = data[5]; |
| finger->finger_id = data[6] >> 4; |
| } |
| |
| static void hidpp_touchpad_raw_xy_event(struct hidpp_device *hidpp_dev, |
| u8 *data, struct hidpp_touchpad_raw_xy *raw_xy) |
| { |
| memset(raw_xy, 0, sizeof(struct hidpp_touchpad_raw_xy)); |
| raw_xy->end_of_frame = data[8] & 0x01; |
| raw_xy->spurious_flag = (data[8] >> 1) & 0x01; |
| raw_xy->finger_count = data[15] & 0x0f; |
| raw_xy->button = (data[8] >> 2) & 0x01; |
| |
| if (raw_xy->finger_count) { |
| hidpp_touchpad_touch_event(&data[2], &raw_xy->fingers[0]); |
| hidpp_touchpad_touch_event(&data[9], &raw_xy->fingers[1]); |
| } |
| } |
| |
| /* -------------------------------------------------------------------------- */ |
| /* 0x8123: Force feedback support */ |
| /* -------------------------------------------------------------------------- */ |
| |
| #define HIDPP_FF_GET_INFO 0x01 |
| #define HIDPP_FF_RESET_ALL 0x11 |
| #define HIDPP_FF_DOWNLOAD_EFFECT 0x21 |
| #define HIDPP_FF_SET_EFFECT_STATE 0x31 |
| #define HIDPP_FF_DESTROY_EFFECT 0x41 |
| #define HIDPP_FF_GET_APERTURE 0x51 |
| #define HIDPP_FF_SET_APERTURE 0x61 |
| #define HIDPP_FF_GET_GLOBAL_GAINS 0x71 |
| #define HIDPP_FF_SET_GLOBAL_GAINS 0x81 |
| |
| #define HIDPP_FF_EFFECT_STATE_GET 0x00 |
| #define HIDPP_FF_EFFECT_STATE_STOP 0x01 |
| #define HIDPP_FF_EFFECT_STATE_PLAY 0x02 |
| #define HIDPP_FF_EFFECT_STATE_PAUSE 0x03 |
| |
| #define HIDPP_FF_EFFECT_CONSTANT 0x00 |
| #define HIDPP_FF_EFFECT_PERIODIC_SINE 0x01 |
| #define HIDPP_FF_EFFECT_PERIODIC_SQUARE 0x02 |
| #define HIDPP_FF_EFFECT_PERIODIC_TRIANGLE 0x03 |
| #define HIDPP_FF_EFFECT_PERIODIC_SAWTOOTHUP 0x04 |
| #define HIDPP_FF_EFFECT_PERIODIC_SAWTOOTHDOWN 0x05 |
| #define HIDPP_FF_EFFECT_SPRING 0x06 |
| #define HIDPP_FF_EFFECT_DAMPER 0x07 |
| #define HIDPP_FF_EFFECT_FRICTION 0x08 |
| #define HIDPP_FF_EFFECT_INERTIA 0x09 |
| #define HIDPP_FF_EFFECT_RAMP 0x0A |
| |
| #define HIDPP_FF_EFFECT_AUTOSTART 0x80 |
| |
| #define HIDPP_FF_EFFECTID_NONE -1 |
| #define HIDPP_FF_EFFECTID_AUTOCENTER -2 |
| |
| #define HIDPP_FF_MAX_PARAMS 20 |
| #define HIDPP_FF_RESERVED_SLOTS 1 |
| |
| struct hidpp_ff_private_data { |
| struct hidpp_device *hidpp; |
| u8 feature_index; |
| u8 version; |
| u16 gain; |
| s16 range; |
| u8 slot_autocenter; |
| u8 num_effects; |
| int *effect_ids; |
| struct workqueue_struct *wq; |
| atomic_t workqueue_size; |
| }; |
| |
| struct hidpp_ff_work_data { |
| struct work_struct work; |
| struct hidpp_ff_private_data *data; |
| int effect_id; |
| u8 command; |
| u8 params[HIDPP_FF_MAX_PARAMS]; |
| u8 size; |
| }; |
| |
| static const signed short hiddpp_ff_effects[] = { |
| FF_CONSTANT, |
| FF_PERIODIC, |
| FF_SINE, |
| FF_SQUARE, |
| FF_SAW_UP, |
| FF_SAW_DOWN, |
| FF_TRIANGLE, |
| FF_SPRING, |
| FF_DAMPER, |
| FF_AUTOCENTER, |
| FF_GAIN, |
| -1 |
| }; |
| |
| static const signed short hiddpp_ff_effects_v2[] = { |
| FF_RAMP, |
| FF_FRICTION, |
| FF_INERTIA, |
| -1 |
| }; |
| |
| static const u8 HIDPP_FF_CONDITION_CMDS[] = { |
| HIDPP_FF_EFFECT_SPRING, |
| HIDPP_FF_EFFECT_FRICTION, |
| HIDPP_FF_EFFECT_DAMPER, |
| HIDPP_FF_EFFECT_INERTIA |
| }; |
| |
| static const char *HIDPP_FF_CONDITION_NAMES[] = { |
| "spring", |
| "friction", |
| "damper", |
| "inertia" |
| }; |
| |
| |
| static u8 hidpp_ff_find_effect(struct hidpp_ff_private_data *data, int effect_id) |
| { |
| int i; |
| |
| for (i = 0; i < data->num_effects; i++) |
| if (data->effect_ids[i] == effect_id) |
| return i+1; |
| |
| return 0; |
| } |
| |
| static void hidpp_ff_work_handler(struct work_struct *w) |
| { |
| struct hidpp_ff_work_data *wd = container_of(w, struct hidpp_ff_work_data, work); |
| struct hidpp_ff_private_data *data = wd->data; |
| struct hidpp_report response; |
| u8 slot; |
| int ret; |
| |
| /* add slot number if needed */ |
| switch (wd->effect_id) { |
| case HIDPP_FF_EFFECTID_AUTOCENTER: |
| wd->params[0] = data->slot_autocenter; |
| break; |
| case HIDPP_FF_EFFECTID_NONE: |
| /* leave slot as zero */ |
| break; |
| default: |
| /* find current slot for effect */ |
| wd->params[0] = hidpp_ff_find_effect(data, wd->effect_id); |
| break; |
| } |
| |
| /* send command and wait for reply */ |
| ret = hidpp_send_fap_command_sync(data->hidpp, data->feature_index, |
| wd->command, wd->params, wd->size, &response); |
| |
| if (ret) { |
| hid_err(data->hidpp->hid_dev, "Failed to send command to device!\n"); |
| goto out; |
| } |
| |
| /* parse return data */ |
| switch (wd->command) { |
| case HIDPP_FF_DOWNLOAD_EFFECT: |
| slot = response.fap.params[0]; |
| if (slot > 0 && slot <= data->num_effects) { |
| if (wd->effect_id >= 0) |
| /* regular effect uploaded */ |
| data->effect_ids[slot-1] = wd->effect_id; |
| else if (wd->effect_id >= HIDPP_FF_EFFECTID_AUTOCENTER) |
| /* autocenter spring uploaded */ |
| data->slot_autocenter = slot; |
| } |
| break; |
| case HIDPP_FF_DESTROY_EFFECT: |
| if (wd->effect_id >= 0) |
| /* regular effect destroyed */ |
| data->effect_ids[wd->params[0]-1] = -1; |
| else if (wd->effect_id >= HIDPP_FF_EFFECTID_AUTOCENTER) |
| /* autocenter spring destoyed */ |
| data->slot_autocenter = 0; |
| break; |
| case HIDPP_FF_SET_GLOBAL_GAINS: |
| data->gain = (wd->params[0] << 8) + wd->params[1]; |
| break; |
| case HIDPP_FF_SET_APERTURE: |
| data->range = (wd->params[0] << 8) + wd->params[1]; |
| break; |
| default: |
| /* no action needed */ |
| break; |
| } |
| |
| out: |
| atomic_dec(&data->workqueue_size); |
| kfree(wd); |
| } |
| |
| static int hidpp_ff_queue_work(struct hidpp_ff_private_data *data, int effect_id, u8 command, u8 *params, u8 size) |
| { |
| struct hidpp_ff_work_data *wd = kzalloc(sizeof(*wd), GFP_KERNEL); |
| int s; |
| |
| if (!wd) |
| return -ENOMEM; |
| |
| INIT_WORK(&wd->work, hidpp_ff_work_handler); |
| |
| wd->data = data; |
| wd->effect_id = effect_id; |
| wd->command = command; |
| wd->size = size; |
| memcpy(wd->params, params, size); |
| |
| atomic_inc(&data->workqueue_size); |
| queue_work(data->wq, &wd->work); |
| |
| /* warn about excessive queue size */ |
| s = atomic_read(&data->workqueue_size); |
| if (s >= 20 && s % 20 == 0) |
| hid_warn(data->hidpp->hid_dev, "Force feedback command queue contains %d commands, causing substantial delays!", s); |
| |
| return 0; |
| } |
| |
| static int hidpp_ff_upload_effect(struct input_dev *dev, struct ff_effect *effect, struct ff_effect *old) |
| { |
| struct hidpp_ff_private_data *data = dev->ff->private; |
| u8 params[20]; |
| u8 size; |
| int force; |
| |
| /* set common parameters */ |
| params[2] = effect->replay.length >> 8; |
| params[3] = effect->replay.length & 255; |
| params[4] = effect->replay.delay >> 8; |
| params[5] = effect->replay.delay & 255; |
| |
| switch (effect->type) { |
| case FF_CONSTANT: |
| force = (effect->u.constant.level * fixp_sin16((effect->direction * 360) >> 16)) >> 15; |
| params[1] = HIDPP_FF_EFFECT_CONSTANT; |
| params[6] = force >> 8; |
| params[7] = force & 255; |
| params[8] = effect->u.constant.envelope.attack_level >> 7; |
| params[9] = effect->u.constant.envelope.attack_length >> 8; |
| params[10] = effect->u.constant.envelope.attack_length & 255; |
| params[11] = effect->u.constant.envelope.fade_level >> 7; |
| params[12] = effect->u.constant.envelope.fade_length >> 8; |
| params[13] = effect->u.constant.envelope.fade_length & 255; |
| size = 14; |
| dbg_hid("Uploading constant force level=%d in dir %d = %d\n", |
| effect->u.constant.level, |
| effect->direction, force); |
| dbg_hid(" envelope attack=(%d, %d ms) fade=(%d, %d ms)\n", |
| effect->u.constant.envelope.attack_level, |
| effect->u.constant.envelope.attack_length, |
| effect->u.constant.envelope.fade_level, |
| effect->u.constant.envelope.fade_length); |
| break; |
| case FF_PERIODIC: |
| { |
| switch (effect->u.periodic.waveform) { |
| case FF_SINE: |
| params[1] = HIDPP_FF_EFFECT_PERIODIC_SINE; |
| break; |
| case FF_SQUARE: |
| params[1] = HIDPP_FF_EFFECT_PERIODIC_SQUARE; |
| break; |
| case FF_SAW_UP: |
| params[1] = HIDPP_FF_EFFECT_PERIODIC_SAWTOOTHUP; |
| break; |
| case FF_SAW_DOWN: |
| params[1] = HIDPP_FF_EFFECT_PERIODIC_SAWTOOTHDOWN; |
| break; |
| case FF_TRIANGLE: |
| params[1] = HIDPP_FF_EFFECT_PERIODIC_TRIANGLE; |
| break; |
| default: |
| hid_err(data->hidpp->hid_dev, "Unexpected periodic waveform type %i!\n", effect->u.periodic.waveform); |
| return -EINVAL; |
| } |
| force = (effect->u.periodic.magnitude * fixp_sin16((effect->direction * 360) >> 16)) >> 15; |
| params[6] = effect->u.periodic.magnitude >> 8; |
| params[7] = effect->u.periodic.magnitude & 255; |
| params[8] = effect->u.periodic.offset >> 8; |
| params[9] = effect->u.periodic.offset & 255; |
| params[10] = effect->u.periodic.period >> 8; |
| params[11] = effect->u.periodic.period & 255; |
| params[12] = effect->u.periodic.phase >> 8; |
| params[13] = effect->u.periodic.phase & 255; |
| params[14] = effect->u.periodic.envelope.attack_level >> 7; |
| params[15] = effect->u.periodic.envelope.attack_length >> 8; |
| params[16] = effect->u.periodic.envelope.attack_length & 255; |
| params[17] = effect->u.periodic.envelope.fade_level >> 7; |
| params[18] = effect->u.periodic.envelope.fade_length >> 8; |
| params[19] = effect->u.periodic.envelope.fade_length & 255; |
| size = 20; |
| dbg_hid("Uploading periodic force mag=%d/dir=%d, offset=%d, period=%d ms, phase=%d\n", |
| effect->u.periodic.magnitude, effect->direction, |
| effect->u.periodic.offset, |
| effect->u.periodic.period, |
| effect->u.periodic.phase); |
| dbg_hid(" envelope attack=(%d, %d ms) fade=(%d, %d ms)\n", |
| effect->u.periodic.envelope.attack_level, |
| effect->u.periodic.envelope.attack_length, |
| effect->u.periodic.envelope.fade_level, |
| effect->u.periodic.envelope.fade_length); |
| break; |
| } |
| case FF_RAMP: |
| params[1] = HIDPP_FF_EFFECT_RAMP; |
| force = (effect->u.ramp.start_level * fixp_sin16((effect->direction * 360) >> 16)) >> 15; |
| params[6] = force >> 8; |
| params[7] = force & 255; |
| force = (effect->u.ramp.end_level * fixp_sin16((effect->direction * 360) >> 16)) >> 15; |
| params[8] = force >> 8; |
| params[9] = force & 255; |
| params[10] = effect->u.ramp.envelope.attack_level >> 7; |
| params[11] = effect->u.ramp.envelope.attack_length >> 8; |
| params[12] = effect->u.ramp.envelope.attack_length & 255; |
| params[13] = effect->u.ramp.envelope.fade_level >> 7; |
| params[14] = effect->u.ramp.envelope.fade_length >> 8; |
| params[15] = effect->u.ramp.envelope.fade_length & 255; |
| size = 16; |
| dbg_hid("Uploading ramp force level=%d -> %d in dir %d = %d\n", |
| effect->u.ramp.start_level, |
| effect->u.ramp.end_level, |
| effect->direction, force); |
| dbg_hid(" envelope attack=(%d, %d ms) fade=(%d, %d ms)\n", |
| effect->u.ramp.envelope.attack_level, |
| effect->u.ramp.envelope.attack_length, |
| effect->u.ramp.envelope.fade_level, |
| effect->u.ramp.envelope.fade_length); |
| break; |
| case FF_FRICTION: |
| case FF_INERTIA: |
| case FF_SPRING: |
| case FF_DAMPER: |
| params[1] = HIDPP_FF_CONDITION_CMDS[effect->type - FF_SPRING]; |
| params[6] = effect->u.condition[0].left_saturation >> 9; |
| params[7] = (effect->u.condition[0].left_saturation >> 1) & 255; |
| params[8] = effect->u.condition[0].left_coeff >> 8; |
| params[9] = effect->u.condition[0].left_coeff & 255; |
| params[10] = effect->u.condition[0].deadband >> 9; |
| params[11] = (effect->u.condition[0].deadband >> 1) & 255; |
| params[12] = effect->u.condition[0].center >> 8; |
| params[13] = effect->u.condition[0].center & 255; |
| params[14] = effect->u.condition[0].right_coeff >> 8; |
| params[15] = effect->u.condition[0].right_coeff & 255; |
| params[16] = effect->u.condition[0].right_saturation >> 9; |
| params[17] = (effect->u.condition[0].right_saturation >> 1) & 255; |
| size = 18; |
| dbg_hid("Uploading %s force left coeff=%d, left sat=%d, right coeff=%d, right sat=%d\n", |
| HIDPP_FF_CONDITION_NAMES[effect->type - FF_SPRING], |
| effect->u.condition[0].left_coeff, |
| effect->u.condition[0].left_saturation, |
| effect->u.condition[0].right_coeff, |
| effect->u.condition[0].right_saturation); |
| dbg_hid(" deadband=%d, center=%d\n", |
| effect->u.condition[0].deadband, |
| effect->u.condition[0].center); |
| break; |
| default: |
| hid_err(data->hidpp->hid_dev, "Unexpected force type %i!\n", effect->type); |
| return -EINVAL; |
| } |
| |
| return hidpp_ff_queue_work(data, effect->id, HIDPP_FF_DOWNLOAD_EFFECT, params, size); |
| } |
| |
| static int hidpp_ff_playback(struct input_dev *dev, int effect_id, int value) |
| { |
| struct hidpp_ff_private_data *data = dev->ff->private; |
| u8 params[2]; |
| |
| params[1] = value ? HIDPP_FF_EFFECT_STATE_PLAY : HIDPP_FF_EFFECT_STATE_STOP; |
| |
| dbg_hid("St%sing playback of effect %d.\n", value?"art":"opp", effect_id); |
| |
| return hidpp_ff_queue_work(data, effect_id, HIDPP_FF_SET_EFFECT_STATE, params, ARRAY_SIZE(params)); |
| } |
| |
| static int hidpp_ff_erase_effect(struct input_dev *dev, int effect_id) |
| { |
| struct hidpp_ff_private_data *data = dev->ff->private; |
| u8 slot = 0; |
| |
| dbg_hid("Erasing effect %d.\n", effect_id); |
| |
| return hidpp_ff_queue_work(data, effect_id, HIDPP_FF_DESTROY_EFFECT, &slot, 1); |
| } |
| |
| static void hidpp_ff_set_autocenter(struct input_dev *dev, u16 magnitude) |
| { |
| struct hidpp_ff_private_data *data = dev->ff->private; |
| u8 params[18]; |
| |
| dbg_hid("Setting autocenter to %d.\n", magnitude); |
| |
| /* start a standard spring effect */ |
| params[1] = HIDPP_FF_EFFECT_SPRING | HIDPP_FF_EFFECT_AUTOSTART; |
| /* zero delay and duration */ |
| params[2] = params[3] = params[4] = params[5] = 0; |
| /* set coeff to 25% of saturation */ |
| params[8] = params[14] = magnitude >> 11; |
| params[9] = params[15] = (magnitude >> 3) & 255; |
| params[6] = params[16] = magnitude >> 9; |
| params[7] = params[17] = (magnitude >> 1) & 255; |
| /* zero deadband and center */ |
| params[10] = params[11] = params[12] = params[13] = 0; |
| |
| hidpp_ff_queue_work(data, HIDPP_FF_EFFECTID_AUTOCENTER, HIDPP_FF_DOWNLOAD_EFFECT, params, ARRAY_SIZE(params)); |
| } |
| |
| static void hidpp_ff_set_gain(struct input_dev *dev, u16 gain) |
| { |
| struct hidpp_ff_private_data *data = dev->ff->private; |
| u8 params[4]; |
| |
| dbg_hid("Setting gain to %d.\n", gain); |
| |
| params[0] = gain >> 8; |
| params[1] = gain & 255; |
| params[2] = 0; /* no boost */ |
| params[3] = 0; |
| |
| hidpp_ff_queue_work(data, HIDPP_FF_EFFECTID_NONE, HIDPP_FF_SET_GLOBAL_GAINS, params, ARRAY_SIZE(params)); |
| } |
| |
| static ssize_t hidpp_ff_range_show(struct device *dev, struct device_attribute *attr, char *buf) |
| { |
| struct hid_device *hid = to_hid_device(dev); |
| struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list); |
| struct input_dev *idev = hidinput->input; |
| struct hidpp_ff_private_data *data = idev->ff->private; |
| |
| return scnprintf(buf, PAGE_SIZE, "%u\n", data->range); |
| } |
| |
| static ssize_t hidpp_ff_range_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
| { |
| struct hid_device *hid = to_hid_device(dev); |
| struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list); |
| struct input_dev *idev = hidinput->input; |
| struct hidpp_ff_private_data *data = idev->ff->private; |
| u8 params[2]; |
| int range = simple_strtoul(buf, NULL, 10); |
| |
| range = clamp(range, 180, 900); |
| |
| params[0] = range >> 8; |
| params[1] = range & 0x00FF; |
| |
| hidpp_ff_queue_work(data, -1, HIDPP_FF_SET_APERTURE, params, ARRAY_SIZE(params)); |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(range, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH, hidpp_ff_range_show, hidpp_ff_range_store); |
| |
| static void hidpp_ff_destroy(struct ff_device *ff) |
| { |
| struct hidpp_ff_private_data *data = ff->private; |
| |
| kfree(data->effect_ids); |
| } |
| |
| static int hidpp_ff_init(struct hidpp_device *hidpp, u8 feature_index) |
| { |
| struct hid_device *hid = hidpp->hid_dev; |
| struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list); |
| struct input_dev *dev = hidinput->input; |
| const struct usb_device_descriptor *udesc = &(hid_to_usb_dev(hid)->descriptor); |
| const u16 bcdDevice = le16_to_cpu(udesc->bcdDevice); |
| struct ff_device *ff; |
| struct hidpp_report response; |
| struct hidpp_ff_private_data *data; |
| int error, j, num_slots; |
| u8 version; |
| |
| if (!dev) { |
| hid_err(hid, "Struct input_dev not set!\n"); |
| return -EINVAL; |
| } |
| |
| /* Get firmware release */ |
| version = bcdDevice & 255; |
| |
| /* Set supported force feedback capabilities */ |
| for (j = 0; hiddpp_ff_effects[j] >= 0; j++) |
| set_bit(hiddpp_ff_effects[j], dev->ffbit); |
| if (version > 1) |
| for (j = 0; hiddpp_ff_effects_v2[j] >= 0; j++) |
| set_bit(hiddpp_ff_effects_v2[j], dev->ffbit); |
| |
| /* Read number of slots available in device */ |
| error = hidpp_send_fap_command_sync(hidpp, feature_index, |
| HIDPP_FF_GET_INFO, NULL, 0, &response); |
| if (error) { |
| if (error < 0) |
| return error; |
| hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", |
| __func__, error); |
| return -EPROTO; |
| } |
| |
| num_slots = response.fap.params[0] - HIDPP_FF_RESERVED_SLOTS; |
| |
| error = input_ff_create(dev, num_slots); |
| |
| if (error) { |
| hid_err(dev, "Failed to create FF device!\n"); |
| return error; |
| } |
| |
| data = kzalloc(sizeof(*data), GFP_KERNEL); |
| if (!data) |
| return -ENOMEM; |
| data->effect_ids = kcalloc(num_slots, sizeof(int), GFP_KERNEL); |
| if (!data->effect_ids) { |
| kfree(data); |
| return -ENOMEM; |
| } |
| data->hidpp = hidpp; |
| data->feature_index = feature_index; |
| data->version = version; |
| data->slot_autocenter = 0; |
| data->num_effects = num_slots; |
| for (j = 0; j < num_slots; j++) |
| data->effect_ids[j] = -1; |
| |
| ff = dev->ff; |
| ff->private = data; |
| |
| ff->upload = hidpp_ff_upload_effect; |
| ff->erase = hidpp_ff_erase_effect; |
| ff->playback = hidpp_ff_playback; |
| ff->set_gain = hidpp_ff_set_gain; |
| ff->set_autocenter = hidpp_ff_set_autocenter; |
| ff->destroy = hidpp_ff_destroy; |
| |
| |
| /* reset all forces */ |
| error = hidpp_send_fap_command_sync(hidpp, feature_index, |
| HIDPP_FF_RESET_ALL, NULL, 0, &response); |
| |
| /* Read current Range */ |
| error = hidpp_send_fap_command_sync(hidpp, feature_index, |
| HIDPP_FF_GET_APERTURE, NULL, 0, &response); |
| if (error) |
| hid_warn(hidpp->hid_dev, "Failed to read range from device!\n"); |
| data->range = error ? 900 : get_unaligned_be16(&response.fap.params[0]); |
| |
| /* Create sysfs interface */ |
| error = device_create_file(&(hidpp->hid_dev->dev), &dev_attr_range); |
| if (error) |
| hid_warn(hidpp->hid_dev, "Unable to create sysfs interface for \"range\", errno %d!\n", error); |
| |
| /* Read the current gain values */ |
| error = hidpp_send_fap_command_sync(hidpp, feature_index, |
| HIDPP_FF_GET_GLOBAL_GAINS, NULL, 0, &response); |
| if (error) |
| hid_warn(hidpp->hid_dev, "Failed to read gain values from device!\n"); |
| data->gain = error ? 0xffff : get_unaligned_be16(&response.fap.params[0]); |
| /* ignore boost value at response.fap.params[2] */ |
| |
| /* init the hardware command queue */ |
| data->wq = create_singlethread_workqueue("hidpp-ff-sendqueue"); |
| atomic_set(&data->workqueue_size, 0); |
| |
| /* initialize with zero autocenter to get wheel in usable state */ |
| hidpp_ff_set_autocenter(dev, 0); |
| |
| hid_info(hid, "Force feedback support loaded (firmware release %d).\n", |
| version); |
| |
| return 0; |
| } |
| |
| static int hidpp_ff_deinit(struct hid_device *hid) |
| { |
| struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list); |
| struct input_dev *dev = hidinput->input; |
| struct hidpp_ff_private_data *data; |
| |
| if (!dev) { |
| hid_err(hid, "Struct input_dev not found!\n"); |
| return -EINVAL; |
| } |
| |
| hid_info(hid, "Unloading HID++ force feedback.\n"); |
| data = dev->ff->private; |
| if (!data) { |
| hid_err(hid, "Private data not found!\n"); |
| return -EINVAL; |
| } |
| |
| destroy_workqueue(data->wq); |
| device_remove_file(&hid->dev, &dev_attr_range); |
| |
| return 0; |
| } |
| |
| |
| /* ************************************************************************** */ |
| /* */ |
| /* Device Support */ |
| /* */ |
| /* ************************************************************************** */ |
| |
| /* -------------------------------------------------------------------------- */ |
| /* Touchpad HID++ devices */ |
| /* -------------------------------------------------------------------------- */ |
| |
| #define WTP_MANUAL_RESOLUTION 39 |
| |
| struct wtp_data { |
| struct input_dev *input; |
| u16 x_size, y_size; |
| u8 finger_count; |
| u8 mt_feature_index; |
| u8 button_feature_index; |
| u8 maxcontacts; |
| bool flip_y; |
| unsigned int resolution; |
| }; |
| |
| static int wtp_input_mapping(struct hid_device *hdev, struct hid_input *hi, |
| struct hid_field *field, struct hid_usage *usage, |
| unsigned long **bit, int *max) |
| { |
| return -1; |
| } |
| |
| static void wtp_populate_input(struct hidpp_device *hidpp, |
| struct input_dev *input_dev, bool origin_is_hid_core) |
| { |
| struct wtp_data *wd = hidpp->private_data; |
| |
| __set_bit(EV_ABS, input_dev->evbit); |
| __set_bit(EV_KEY, input_dev->evbit); |
| __clear_bit(EV_REL, input_dev->evbit); |
| __clear_bit(EV_LED, input_dev->evbit); |
| |
| input_set_abs_params(input_dev, ABS_MT_POSITION_X, 0, wd->x_size, 0, 0); |
| input_abs_set_res(input_dev, ABS_MT_POSITION_X, wd->resolution); |
| input_set_abs_params(input_dev, ABS_MT_POSITION_Y, 0, wd->y_size, 0, 0); |
| input_abs_set_res(input_dev, ABS_MT_POSITION_Y, wd->resolution); |
| |
| /* Max pressure is not given by the devices, pick one */ |
| input_set_abs_params(input_dev, ABS_MT_PRESSURE, 0, 50, 0, 0); |
| |
| input_set_capability(input_dev, EV_KEY, BTN_LEFT); |
| |
| if (hidpp->quirks & HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS) |
| input_set_capability(input_dev, EV_KEY, BTN_RIGHT); |
| else |
| __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); |
| |
| input_mt_init_slots(input_dev, wd->maxcontacts, INPUT_MT_POINTER | |
| INPUT_MT_DROP_UNUSED); |
| |
| wd->input = input_dev; |
| } |
| |
| static void wtp_touch_event(struct wtp_data *wd, |
| struct hidpp_touchpad_raw_xy_finger *touch_report) |
| { |
| int slot; |
| |
| if (!touch_report->finger_id || touch_report->contact_type) |
| /* no actual data */ |
| return; |
| |
| slot = input_mt_get_slot_by_key(wd->input, touch_report->finger_id); |
| |
| input_mt_slot(wd->input, slot); |
| input_mt_report_slot_state(wd->input, MT_TOOL_FINGER, |
| touch_report->contact_status); |
| if (touch_report->contact_status) { |
| input_event(wd->input, EV_ABS, ABS_MT_POSITION_X, |
| touch_report->x); |
| input_event(wd->input, EV_ABS, ABS_MT_POSITION_Y, |
| wd->flip_y ? wd->y_size - touch_report->y : |
| touch_report->y); |
| input_event(wd->input, EV_ABS, ABS_MT_PRESSURE, |
| touch_report->area); |
| } |
| } |
| |
| static void wtp_send_raw_xy_event(struct hidpp_device *hidpp, |
| struct hidpp_touchpad_raw_xy *raw) |
| { |
| struct wtp_data *wd = hidpp->private_data; |
| int i; |
| |
| for (i = 0; i < 2; i++) |
| wtp_touch_event(wd, &(raw->fingers[i])); |
| |
| if (raw->end_of_frame && |
| !(hidpp->quirks & HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS)) |
| input_event(wd->input, EV_KEY, BTN_LEFT, raw->button); |
| |
| if (raw->end_of_frame || raw->finger_count <= 2) { |
| input_mt_sync_frame(wd->input); |
| input_sync(wd->input); |
| } |
| } |
| |
| static int wtp_mouse_raw_xy_event(struct hidpp_device *hidpp, u8 *data) |
| { |
| struct wtp_data *wd = hidpp->private_data; |
| u8 c1_area = ((data[7] & 0xf) * (data[7] & 0xf) + |
| (data[7] >> 4) * (data[7] >> 4)) / 2; |
| u8 c2_area = ((data[13] & 0xf) * (data[13] & 0xf) + |
| (data[13] >> 4) * (data[13] >> 4)) / 2; |
| struct hidpp_touchpad_raw_xy raw = { |
| .timestamp = data[1], |
| .fingers = { |
| { |
| .contact_type = 0, |
| .contact_status = !!data[7], |
| .x = get_unaligned_le16(&data[3]), |
| .y = get_unaligned_le16(&data[5]), |
| .z = c1_area, |
| .area = c1_area, |
| .finger_id = data[2], |
| }, { |
| .contact_type = 0, |
| .contact_status = !!data[13], |
| .x = get_unaligned_le16(&data[9]), |
| .y = get_unaligned_le16(&data[11]), |
| .z = c2_area, |
| .area = c2_area, |
| .finger_id = data[8], |
| } |
| }, |
| .finger_count = wd->maxcontacts, |
| .spurious_flag = 0, |
| .end_of_frame = (data[0] >> 7) == 0, |
| .button = data[0] & 0x01, |
| }; |
| |
| wtp_send_raw_xy_event(hidpp, &raw); |
| |
| return 1; |
| } |
| |
| static int wtp_raw_event(struct hid_device *hdev, u8 *data, int size) |
| { |
| struct hidpp_device *hidpp = hid_get_drvdata(hdev); |
| struct wtp_data *wd = hidpp->private_data; |
| struct hidpp_report *report = (struct hidpp_report *)data; |
| struct hidpp_touchpad_raw_xy raw; |
| |
| if (!wd || !wd->input) |
| return 1; |
| |
| switch (data[0]) { |
| case 0x02: |
| if (size < 2) { |
| hid_err(hdev, "Received HID report of bad size (%d)", |
| size); |
| return 1; |
| } |
| if (hidpp->quirks & HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS) { |
| input_event(wd->input, EV_KEY, BTN_LEFT, |
| !!(data[1] & 0x01)); |
| input_event(wd->input, EV_KEY, BTN_RIGHT, |
| !!(data[1] & 0x02)); |
| input_sync(wd->input); |
| return 0; |
| } else { |
| if (size < 21) |
| return 1; |
| return wtp_mouse_raw_xy_event(hidpp, &data[7]); |
| } |
| case REPORT_ID_HIDPP_LONG: |
| /* size is already checked in hidpp_raw_event. */ |
| if ((report->fap.feature_index != wd->mt_feature_index) || |
| (report->fap.funcindex_clientid != EVENT_TOUCHPAD_RAW_XY)) |
| return 1; |
| hidpp_touchpad_raw_xy_event(hidpp, data + 4, &raw); |
| |
| wtp_send_raw_xy_event(hidpp, &raw); |
| return 0; |
| } |
| |
| return 0; |
| } |
| |
| static int wtp_get_config(struct hidpp_device *hidpp) |
| { |
| struct wtp_data *wd = hidpp->private_data; |
| struct hidpp_touchpad_raw_info raw_info = {0}; |
| u8 feature_type; |
| int ret; |
| |
| ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_TOUCHPAD_RAW_XY, |
| &wd->mt_feature_index, &feature_type); |
| if (ret) |
| /* means that the device is not powered up */ |
| return ret; |
| |
| ret = hidpp_touchpad_get_raw_info(hidpp, wd->mt_feature_index, |
| &raw_info); |
| if (ret) |
| return ret; |
| |
| wd->x_size = raw_info.x_size; |
| wd->y_size = raw_info.y_size; |
| wd->maxcontacts = raw_info.maxcontacts; |
| wd->flip_y = raw_info.origin == TOUCHPAD_RAW_XY_ORIGIN_LOWER_LEFT; |
| wd->resolution = raw_info.res; |
| if (!wd->resolution) |
| wd->resolution = WTP_MANUAL_RESOLUTION; |
| |
| return 0; |
| } |
| |
| static int wtp_allocate(struct hid_device *hdev, const struct hid_device_id *id) |
| { |
| struct hidpp_device *hidpp = hid_get_drvdata(hdev); |
| struct wtp_data *wd; |
| |
| wd = devm_kzalloc(&hdev->dev, sizeof(struct wtp_data), |
| GFP_KERNEL); |
| if (!wd) |
| return -ENOMEM; |
| |
| hidpp->private_data = wd; |
| |
| return 0; |
| }; |
| |
| static int wtp_connect(struct hid_device *hdev, bool connected) |
| { |
| struct hidpp_device *hidpp = hid_get_drvdata(hdev); |
| struct wtp_data *wd = hidpp->private_data; |
| int ret; |
| |
| if (!wd->x_size) { |
| ret = wtp_get_config(hidpp); |
| if (ret) { |
| hid_err(hdev, "Can not get wtp config: %d\n", ret); |
| return ret; |
| } |
| } |
| |
| return hidpp_touchpad_set_raw_report_state(hidpp, wd->mt_feature_index, |
| true, true); |
| } |
| |
| /* ------------------------------------------------------------------------- */ |
| /* Logitech M560 devices */ |
| /* ------------------------------------------------------------------------- */ |
| |
| /* |
| * Logitech M560 protocol overview |
| * |
| * The Logitech M560 mouse, is designed for windows 8. When the middle and/or |
| * the sides buttons are pressed, it sends some keyboard keys events |
| * instead of buttons ones. |
| * To complicate things further, the middle button keys sequence |
| * is different from the odd press and the even press. |
| * |
| * forward button -> Super_R |
| * backward button -> Super_L+'d' (press only) |
| * middle button -> 1st time: Alt_L+SuperL+XF86TouchpadOff (press only) |
| * 2nd time: left-click (press only) |
| * NB: press-only means that when the button is pressed, the |
| * KeyPress/ButtonPress and KeyRelease/ButtonRelease events are generated |
| * together sequentially; instead when the button is released, no event is |
| * generated ! |
| * |
| * With the command |
| * 10<xx>0a 3500af03 (where <xx> is the mouse id), |
| * the mouse reacts differently: |
| * - it never sends a keyboard key event |
| * - for the three mouse button it sends: |
| * middle button press 11<xx>0a 3500af00... |
| * side 1 button (forward) press 11<xx>0a 3500b000... |
| * side 2 button (backward) press 11<xx>0a 3500ae00... |
| * middle/side1/side2 button release 11<xx>0a 35000000... |
| */ |
| |
| static const u8 m560_config_parameter[] = {0x00, 0xaf, 0x03}; |
| |
| struct m560_private_data { |
| struct input_dev *input; |
| }; |
| |
| /* how buttons are mapped in the report */ |
| #define M560_MOUSE_BTN_LEFT 0x01 |
| #define M560_MOUSE_BTN_RIGHT 0x02 |
| #define M560_MOUSE_BTN_WHEEL_LEFT 0x08 |
| #define M560_MOUSE_BTN_WHEEL_RIGHT 0x10 |
| |
| #define M560_SUB_ID 0x0a |
| #define M560_BUTTON_MODE_REGISTER 0x35 |
| |
| static int m560_send_config_command(struct hid_device *hdev, bool connected) |
| { |
| struct hidpp_report response; |
| struct hidpp_device *hidpp_dev; |
| |
| hidpp_dev = hid_get_drvdata(hdev); |
| |
| return hidpp_send_rap_command_sync( |
| hidpp_dev, |
| REPORT_ID_HIDPP_SHORT, |
| M560_SUB_ID, |
| M560_BUTTON_MODE_REGISTER, |
| (u8 *)m560_config_parameter, |
| sizeof(m560_config_parameter), |
| &response |
| ); |
| } |
| |
| static int m560_allocate(struct hid_device *hdev) |
| { |
| struct hidpp_device *hidpp = hid_get_drvdata(hdev); |
| struct m560_private_data *d; |
| |
| d = devm_kzalloc(&hdev->dev, sizeof(struct m560_private_data), |
| GFP_KERNEL); |
| if (!d) |
| return -ENOMEM; |
| |
| hidpp->private_data = d; |
| |
| return 0; |
| }; |
| |
| static int m560_raw_event(struct hid_device *hdev, u8 *data, int size) |
| { |
| struct hidpp_device *hidpp = hid_get_drvdata(hdev); |
| struct m560_private_data *mydata = hidpp->private_data; |
| |
| /* sanity check */ |
| if (!mydata || !mydata->input) { |
| hid_err(hdev, "error in parameter\n"); |
| return -EINVAL; |
| } |
| |
| if (size < 7) { |
| hid_err(hdev, "error in report\n"); |
| return 0; |
| } |
| |
| if (data[0] == REPORT_ID_HIDPP_LONG && |
| data[2] == M560_SUB_ID && data[6] == 0x00) { |
| /* |
| * m560 mouse report for middle, forward and backward button |
| * |
| * data[0] = 0x11 |
| * data[1] = device-id |
| * data[2] = 0x0a |
| * data[5] = 0xaf -> middle |
| * 0xb0 -> forward |
| * 0xae -> backward |
| * 0x00 -> release all |
| * data[6] = 0x00 |
| */ |
| |
| switch (data[5]) { |
| case 0xaf: |
| input_report_key(mydata->input, BTN_MIDDLE, 1); |
| break; |
| case 0xb0: |
| input_report_key(mydata->input, BTN_FORWARD, 1); |
| break; |
| case 0xae: |
| input_report_key(mydata->input, BTN_BACK, 1); |
| break; |
| case 0x00: |
| input_report_key(mydata->input, BTN_BACK, 0); |
| input_report_key(mydata->input, BTN_FORWARD, 0); |
| input_report_key(mydata->input, BTN_MIDDLE, 0); |
| break; |
| default: |
| hid_err(hdev, "error in report\n"); |
| return 0; |
| } |
| input_sync(mydata->input); |
| |
| } else if (data[0] == 0x02) { |
| /* |
| * Logitech M560 mouse report |
| * |
| * data[0] = type (0x02) |
| * data[1..2] = buttons |
| * data[3..5] = xy |
| * data[6] = wheel |
| */ |
| |
| int v; |
| |
| input_report_key(mydata->input, BTN_LEFT, |
| !!(data[1] & M560_MOUSE_BTN_LEFT)); |
| input_report_key(mydata->input, BTN_RIGHT, |
| !!(data[1] & M560_MOUSE_BTN_RIGHT)); |
| |
| if (data[1] & M560_MOUSE_BTN_WHEEL_LEFT) |
| input_report_rel(mydata->input, REL_HWHEEL, -1); |
| else if (data[1] & M560_MOUSE_BTN_WHEEL_RIGHT) |
| input_report_rel(mydata->input, REL_HWHEEL, 1); |
| |
| v = hid_snto32(hid_field_extract(hdev, data+3, 0, 12), 12); |
| input_report_rel(mydata->input, REL_X, v); |
| |
| v = hid_snto32(hid_field_extract(hdev, data+3, 12, 12), 12); |
| input_report_rel(mydata->input, REL_Y, v); |
| |
| v = hid_snto32(data[6], 8); |
| input_report_rel(mydata->input, REL_WHEEL, v); |
| |
| input_sync(mydata->input); |
| } |
| |
| return 1; |
| } |
| |
| static void m560_populate_input(struct hidpp_device *hidpp, |
| struct input_dev *input_dev, bool origin_is_hid_core) |
| { |
| struct m560_private_data *mydata = hidpp->private_data; |
| |
| mydata->input = input_dev; |
| |
| __set_bit(EV_KEY, mydata->input->evbit); |
| __set_bit(BTN_MIDDLE, mydata->input->keybit); |
| __set_bit(BTN_RIGHT, mydata->input->keybit); |
| __set_bit(BTN_LEFT, mydata->input->keybit); |
| __set_bit(BTN_BACK, mydata->input->keybit); |
| __set_bit(BTN_FORWARD, mydata->input->keybit); |
| |
| __set_bit(EV_REL, mydata->input->evbit); |
| __set_bit(REL_X, mydata->input->relbit); |
| __set_bit(REL_Y, mydata->input->relbit); |
| __set_bit(REL_WHEEL, mydata->input->relbit); |
| __set_bit(REL_HWHEEL, mydata->input->relbit); |
| } |
| |
| static int m560_input_mapping(struct hid_device *hdev, struct hid_input *hi, |
| struct hid_field *field, struct hid_usage *usage, |
| unsigned long **bit, int *max) |
| { |
| return -1; |
| } |
| |
| /* ------------------------------------------------------------------------- */ |
| /* Logitech K400 devices */ |
| /* ------------------------------------------------------------------------- */ |
| |
| /* |
| * The Logitech K400 keyboard has an embedded touchpad which is seen |
| * as a mouse from the OS point of view. There is a hardware shortcut to disable |
| * tap-to-click but the setting is not remembered accross reset, annoying some |
| * users. |
| * |
| * We can toggle this feature from the host by using the feature 0x6010: |
| * Touchpad FW items |
| */ |
| |
| struct k400_private_data { |
| u8 feature_index; |
| }; |
| |
| static int k400_disable_tap_to_click(struct hidpp_device *hidpp) |
| { |
| struct k400_private_data *k400 = hidpp->private_data; |
| struct hidpp_touchpad_fw_items items = {}; |
| int ret; |
| u8 feature_type; |
| |
| if (!k400->feature_index) { |
| ret = hidpp_root_get_feature(hidpp, |
| HIDPP_PAGE_TOUCHPAD_FW_ITEMS, |
| &k400->feature_index, &feature_type); |
| if (ret) |
| /* means that the device is not powered up */ |
| return ret; |
| } |
| |
| ret = hidpp_touchpad_fw_items_set(hidpp, k400->feature_index, &items); |
| if (ret) |
| return ret; |
| |
| return 0; |
| } |
| |
| static int k400_allocate(struct hid_device *hdev) |
| { |
| struct hidpp_device *hidpp = hid_get_drvdata(hdev); |
| struct k400_private_data *k400; |
| |
| k400 = devm_kzalloc(&hdev->dev, sizeof(struct k400_private_data), |
| GFP_KERNEL); |
| if (!k400) |
| return -ENOMEM; |
| |
| hidpp->private_data = k400; |
| |
| return 0; |
| }; |
| |
| static int k400_connect(struct hid_device *hdev, bool connected) |
| { |
| struct hidpp_device *hidpp = hid_get_drvdata(hdev); |
| |
| if (!disable_tap_to_click) |
| return 0; |
| |
| return k400_disable_tap_to_click(hidpp); |
| } |
| |
| /* ------------------------------------------------------------------------- */ |
| /* Logitech G920 Driving Force Racing Wheel for Xbox One */ |
| /* ------------------------------------------------------------------------- */ |
| |
| #define HIDPP_PAGE_G920_FORCE_FEEDBACK 0x8123 |
| |
| static int g920_get_config(struct hidpp_device *hidpp) |
| { |
| u8 feature_type; |
| u8 feature_index; |
| int ret; |
| |
| /* Find feature and store for later use */ |
| ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_G920_FORCE_FEEDBACK, |
| &feature_index, &feature_type); |
| if (ret) |
| return ret; |
| |
| ret = hidpp_ff_init(hidpp, feature_index); |
| if (ret) |
| hid_warn(hidpp->hid_dev, "Unable to initialize force feedback support, errno %d\n", |
| ret); |
| |
| return 0; |
| } |
| |
| /* -------------------------------------------------------------------------- */ |
| /* Generic HID++ devices */ |
| /* -------------------------------------------------------------------------- */ |
| |
| static int hidpp_input_mapping(struct hid_device *hdev, struct hid_input *hi, |
| struct hid_field *field, struct hid_usage *usage, |
| unsigned long **bit, int *max) |
| { |
| struct hidpp_device *hidpp = hid_get_drvdata(hdev); |
| |
| if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) |
| return wtp_input_mapping(hdev, hi, field, usage, bit, max); |
| else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560 && |
| field->application != HID_GD_MOUSE) |
| return m560_input_mapping(hdev, hi, field, usage, bit, max); |
| |
| return 0; |
| } |
| |
| static int hidpp_input_mapped(struct hid_device *hdev, struct hid_input *hi, |
| struct hid_field *field, struct hid_usage *usage, |
| unsigned long **bit, int *max) |
| { |
| struct hidpp_device *hidpp = hid_get_drvdata(hdev); |
| |
| /* Ensure that Logitech G920 is not given a default fuzz/flat value */ |
| if (hidpp->quirks & HIDPP_QUIRK_CLASS_G920) { |
| if (usage->type == EV_ABS && (usage->code == ABS_X || |
| usage->code == ABS_Y || usage->code == ABS_Z || |
| usage->code == ABS_RZ)) { |
| field->application = HID_GD_MULTIAXIS; |
| } |
| } |
| |
| return 0; |
| } |
| |
| |
| static void hidpp_populate_input(struct hidpp_device *hidpp, |
| struct input_dev *input, bool origin_is_hid_core) |
| { |
| if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) |
| wtp_populate_input(hidpp, input, origin_is_hid_core); |
| else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560) |
| m560_populate_input(hidpp, input, origin_is_hid_core); |
| } |
| |
| static int hidpp_input_configured(struct hid_device *hdev, |
| struct hid_input *hidinput) |
| { |
| struct hidpp_device *hidpp = hid_get_drvdata(hdev); |
| struct input_dev *input = hidinput->input; |
| |
| hidpp_populate_input(hidpp, input, true); |
| |
| return 0; |
| } |
| |
| static int hidpp_raw_hidpp_event(struct hidpp_device *hidpp, u8 *data, |
| int size) |
| { |
| struct hidpp_report *question = hidpp->send_receive_buf; |
| struct hidpp_report *answer = hidpp->send_receive_buf; |
| struct hidpp_report *report = (struct hidpp_report *)data; |
| int ret; |
| |
| /* |
| * If the mutex is locked then we have a pending answer from a |
| * previously sent command. |
| */ |
| if (unlikely(mutex_is_locked(&hidpp->send_mutex))) { |
| /* |
| * Check for a correct hidpp20 answer or the corresponding |
| * error |
| */ |
| if (hidpp_match_answer(question, report) || |
| hidpp_match_error(question, report)) { |
| *answer = *report; |
| hidpp->answer_available = true; |
| wake_up(&hidpp->wait); |
| /* |
| * This was an answer to a command that this driver sent |
| * We return 1 to hid-core to avoid forwarding the |
| * command upstream as it has been treated by the driver |
| */ |
| |
| return 1; |
| } |
| } |
| |
| if (unlikely(hidpp_report_is_connect_event(report))) { |
| atomic_set(&hidpp->connected, |
| !(report->rap.params[0] & (1 << 6))); |
| if (schedule_work(&hidpp->work) == 0) |
| dbg_hid("%s: connect event already queued\n", __func__); |
| return 1; |
| } |
| |
| if (hidpp->capabilities & HIDPP_CAPABILITY_HIDPP20_BATTERY) { |
| ret = hidpp20_battery_event(hidpp, data, size); |
| if (ret != 0) |
| return ret; |
| ret = hidpp_solar_battery_event(hidpp, data, size); |
| if (ret != 0) |
| return ret; |
| } |
| |
| if (hidpp->capabilities & HIDPP_CAPABILITY_HIDPP10_BATTERY) { |
| ret = hidpp10_battery_event(hidpp, data, size); |
| if (ret != 0) |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int hidpp_raw_event(struct hid_device *hdev, struct hid_report *report, |
| u8 *data, int size) |
| { |
| struct hidpp_device *hidpp = hid_get_drvdata(hdev); |
| int ret = 0; |
| |
| /* Generic HID++ processing. */ |
| switch (data[0]) { |
| case REPORT_ID_HIDPP_VERY_LONG: |
| if (size != HIDPP_REPORT_VERY_LONG_LENGTH) { |
| hid_err(hdev, "received hid++ report of bad size (%d)", |
| size); |
| return 1; |
| } |
| ret = hidpp_raw_hidpp_event(hidpp, data, size); |
| break; |
| case REPORT_ID_HIDPP_LONG: |
| if (size != HIDPP_REPORT_LONG_LENGTH) { |
| hid_err(hdev, "received hid++ report of bad size (%d)", |
| size); |
| return 1; |
| } |
| ret = hidpp_raw_hidpp_event(hidpp, data, size); |
| break; |
| case REPORT_ID_HIDPP_SHORT: |
| if (size != HIDPP_REPORT_SHORT_LENGTH) { |
| hid_err(hdev, "received hid++ report of bad size (%d)", |
| size); |
| return 1; |
| } |
| ret = hidpp_raw_hidpp_event(hidpp, data, size); |
| break; |
| } |
| |
| /* If no report is available for further processing, skip calling |
| * raw_event of subclasses. */ |
| if (ret != 0) |
| return ret; |
| |
| if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) |
| return wtp_raw_event(hdev, data, size); |
| else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560) |
| return m560_raw_event(hdev, data, size); |
| |
| return 0; |
| } |
| |
| static int hidpp_initialize_battery(struct hidpp_device *hidpp) |
| { |
| static atomic_t battery_no = ATOMIC_INIT(0); |
| struct power_supply_config cfg = { .drv_data = hidpp }; |
| struct power_supply_desc *desc = &hidpp->battery.desc; |
| enum power_supply_property *battery_props; |
| struct hidpp_battery *battery; |
| unsigned int num_battery_props; |
| unsigned long n; |
| int ret; |
| |
| if (hidpp->battery.ps) |
| return 0; |
| |
| hidpp->battery.feature_index = 0xff; |
| hidpp->battery.solar_feature_index = 0xff; |
| |
| if (hidpp->protocol_major >= 2) { |
| if (hidpp->quirks & HIDPP_QUIRK_CLASS_K750) |
| ret = hidpp_solar_request_battery_event(hidpp); |
| else |
| ret = hidpp20_query_battery_info(hidpp); |
| |
| if (ret) |
| return ret; |
| hidpp->capabilities |= HIDPP_CAPABILITY_HIDPP20_BATTERY; |
| } else { |
| ret = hidpp10_query_battery_status(hidpp); |
| if (ret) { |
| ret = hidpp10_query_battery_mileage(hidpp); |
| if (ret) |
| return -ENOENT; |
| hidpp->capabilities |= HIDPP_CAPABILITY_BATTERY_MILEAGE; |
| } else { |
| hidpp->capabilities |= HIDPP_CAPABILITY_BATTERY_LEVEL_STATUS; |
| } |
| hidpp->capabilities |= HIDPP_CAPABILITY_HIDPP10_BATTERY; |
| } |
| |
| battery_props = devm_kmemdup(&hidpp->hid_dev->dev, |
| hidpp_battery_props, |
| sizeof(hidpp_battery_props), |
| GFP_KERNEL); |
| if (!battery_props) |
| return -ENOMEM; |
| |
| num_battery_props = ARRAY_SIZE(hidpp_battery_props) - 2; |
| |
| if (hidpp->capabilities & HIDPP_CAPABILITY_BATTERY_MILEAGE) |
| battery_props[num_battery_props++] = |
| POWER_SUPPLY_PROP_CAPACITY; |
| |
| if (hidpp->capabilities & HIDPP_CAPABILITY_BATTERY_LEVEL_STATUS) |
| battery_props[num_battery_props++] = |
| POWER_SUPPLY_PROP_CAPACITY_LEVEL; |
| |
| battery = &hidpp->battery; |
| |
| n = atomic_inc_return(&battery_no) - 1; |
| desc->properties = battery_props; |
| desc->num_properties = num_battery_props; |
| desc->get_property = hidpp_battery_get_property; |
| sprintf(battery->name, "hidpp_battery_%ld", n); |
| desc->name = battery->name; |
| desc->type = POWER_SUPPLY_TYPE_BATTERY; |
| desc->use_for_apm = 0; |
| |
| battery->ps = devm_power_supply_register(&hidpp->hid_dev->dev, |
| &battery->desc, |
| &cfg); |
| if (IS_ERR(battery->ps)) |
| return PTR_ERR(battery->ps); |
| |
| power_supply_powers(battery->ps, &hidpp->hid_dev->dev); |
| |
| return ret; |
| } |
| |
| static void hidpp_overwrite_name(struct hid_device *hdev) |
| { |
| struct hidpp_device *hidpp = hid_get_drvdata(hdev); |
| char *name; |
| |
| if (hidpp->protocol_major < 2) |
| return; |
| |
| name = hidpp_get_device_name(hidpp); |
| |
| if (!name) { |
| hid_err(hdev, "unable to retrieve the name of the device"); |
| } else { |
| dbg_hid("HID++: Got name: %s\n", name); |
| snprintf(hdev->name, sizeof(hdev->name), "%s", name); |
| } |
| |
| kfree(name); |
| } |
| |
| static int hidpp_input_open(struct input_dev *dev) |
| { |
| struct hid_device *hid = input_get_drvdata(dev); |
| |
| return hid_hw_open(hid); |
| } |
| |
| static void hidpp_input_close(struct input_dev *dev) |
| { |
| struct hid_device *hid = input_get_drvdata(dev); |
| |
| hid_hw_close(hid); |
| } |
| |
| static struct input_dev *hidpp_allocate_input(struct hid_device *hdev) |
| { |
| struct input_dev *input_dev = devm_input_allocate_device(&hdev->dev); |
| struct hidpp_device *hidpp = hid_get_drvdata(hdev); |
| |
| if (!input_dev) |
| return NULL; |
| |
| input_set_drvdata(input_dev, hdev); |
| input_dev->open = hidpp_input_open; |
| input_dev->close = hidpp_input_close; |
| |
| input_dev->name = hidpp->name; |
| input_dev->phys = hdev->phys; |
| input_dev->uniq = hdev->uniq; |
| input_dev->id.bustype = hdev->bus; |
| input_dev->id.vendor = hdev->vendor; |
| input_dev->id.product = hdev->product; |
| input_dev->id.version = hdev->version; |
| input_dev->dev.parent = &hdev->dev; |
| |
| return input_dev; |
| } |
| |
| static void hidpp_connect_event(struct hidpp_device *hidpp) |
| { |
| struct hid_device *hdev = hidpp->hid_dev; |
| int ret = 0; |
| bool connected = atomic_read(&hidpp->connected); |
| struct input_dev *input; |
| char *name, *devm_name; |
| |
| if (!connected) { |
| if (hidpp->battery.ps) { |
| hidpp->battery.online = false; |
| hidpp->battery.status = POWER_SUPPLY_STATUS_UNKNOWN; |
| hidpp->battery.level = POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN; |
| power_supply_changed(hidpp->battery.ps); |
| } |
| return; |
| } |
| |
| if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) { |
| ret = wtp_connect(hdev, connected); |
| if (ret) |
| return; |
| } else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560) { |
| ret = m560_send_config_command(hdev, connected); |
| if (ret) |
| return; |
| } else if (hidpp->quirks & HIDPP_QUIRK_CLASS_K400) { |
| ret = k400_connect(hdev, connected); |
| if (ret) |
| return; |
| } |
| |
| /* the device is already connected, we can ask for its name and |
| * protocol */ |
| if (!hidpp->protocol_major) { |
| ret = !hidpp_is_connected(hidpp); |
| if (ret) { |
| hid_err(hdev, "Can not get the protocol version.\n"); |
| return; |
| } |
| hid_info(hdev, "HID++ %u.%u device connected.\n", |
| hidpp->protocol_major, hidpp->protocol_minor); |
| } |
| |
| if (hidpp->name == hdev->name && hidpp->protocol_major >= 2) { |
| name = hidpp_get_device_name(hidpp); |
| if (!name) { |
| hid_err(hdev, |
| "unable to retrieve the name of the device"); |
| return; |
| } |
| |
| devm_name = devm_kasprintf(&hdev->dev, GFP_KERNEL, "%s", name); |
| kfree(name); |
| if (!devm_name) |
| return; |
| |
| hidpp->name = devm_name; |
| } |
| |
| hidpp_initialize_battery(hidpp); |
| |
| /* forward current battery state */ |
| if (hidpp->capabilities & HIDPP_CAPABILITY_HIDPP10_BATTERY) { |
| hidpp10_enable_battery_reporting(hidpp); |
| if (hidpp->capabilities & HIDPP_CAPABILITY_BATTERY_MILEAGE) |
| hidpp10_query_battery_mileage(hidpp); |
| else |
| hidpp10_query_battery_status(hidpp); |
| } else if (hidpp->capabilities & HIDPP_CAPABILITY_HIDPP20_BATTERY) { |
| hidpp20_query_battery_info(hidpp); |
| } |
| if (hidpp->battery.ps) |
| power_supply_changed(hidpp->battery.ps); |
| |
| if (!(hidpp->quirks & HIDPP_QUIRK_NO_HIDINPUT) || hidpp->delayed_input) |
| /* if the input nodes are already created, we can stop now */ |
| return; |
| |
| input = hidpp_allocate_input(hdev); |
| if (!input) { |
| hid_err(hdev, "cannot allocate new input device: %d\n", ret); |
| return; |
| } |
| |
| hidpp_populate_input(hidpp, input, false); |
| |
| ret = input_register_device(input); |
| if (ret) |
| input_free_device(input); |
| |
| hidpp->delayed_input = input; |
| } |
| |
| static DEVICE_ATTR(builtin_power_supply, 0000, NULL, NULL); |
| |
| static struct attribute *sysfs_attrs[] = { |
| &dev_attr_builtin_power_supply.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group ps_attribute_group = { |
| .attrs = sysfs_attrs |
| }; |
| |
| static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id) |
| { |
| struct hidpp_device *hidpp; |
| int ret; |
| bool connected; |
| unsigned int connect_mask = HID_CONNECT_DEFAULT; |
| |
| hidpp = devm_kzalloc(&hdev->dev, sizeof(struct hidpp_device), |
| GFP_KERNEL); |
| if (!hidpp) |
| return -ENOMEM; |
| |
| hidpp->hid_dev = hdev; |
| hidpp->name = hdev->name; |
| hid_set_drvdata(hdev, hidpp); |
| |
| hidpp->quirks = id->driver_data; |
| |
| if (id->group == HID_GROUP_LOGITECH_DJ_DEVICE) |
| hidpp->quirks |= HIDPP_QUIRK_UNIFYING; |
| |
| if (disable_raw_mode) { |
| hidpp->quirks &= ~HIDPP_QUIRK_CLASS_WTP; |
| hidpp->quirks &= ~HIDPP_QUIRK_NO_HIDINPUT; |
| } |
| |
| if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) { |
| ret = wtp_allocate(hdev, id); |
| if (ret) |
| goto allocate_fail; |
| } else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560) { |
| ret = m560_allocate(hdev); |
| if (ret) |
| goto allocate_fail; |
| } else if (hidpp->quirks & HIDPP_QUIRK_CLASS_K400) { |
| ret = k400_allocate(hdev); |
| if (ret) |
| goto allocate_fail; |
| } |
| |
| INIT_WORK(&hidpp->work, delayed_work_cb); |
| mutex_init(&hidpp->send_mutex); |
| init_waitqueue_head(&hidpp->wait); |
| |
| /* indicates we are handling the battery properties in the kernel */ |
| ret = sysfs_create_group(&hdev->dev.kobj, &ps_attribute_group); |
| if (ret) |
| hid_warn(hdev, "Cannot allocate sysfs group for %s\n", |
| hdev->name); |
| |
| ret = hid_parse(hdev); |
| if (ret) { |
| hid_err(hdev, "%s:parse failed\n", __func__); |
| goto hid_parse_fail; |
| } |
| |
| if (hidpp->quirks & HIDPP_QUIRK_NO_HIDINPUT) |
| connect_mask &= ~HID_CONNECT_HIDINPUT; |
| |
| if (hidpp->quirks & HIDPP_QUIRK_CLASS_G920) { |
| ret = hid_hw_start(hdev, connect_mask); |
| if (ret) { |
| hid_err(hdev, "hw start failed\n"); |
| goto hid_hw_start_fail; |
| } |
| ret = hid_hw_open(hdev); |
| if (ret < 0) { |
| dev_err(&hdev->dev, "%s:hid_hw_open returned error:%d\n", |
| __func__, ret); |
| hid_hw_stop(hdev); |
| goto hid_hw_start_fail; |
| } |
| } |
| |
| |
| /* Allow incoming packets */ |
| hid_device_io_start(hdev); |
| |
| if (hidpp->quirks & HIDPP_QUIRK_UNIFYING) |
| hidpp_unifying_init(hidpp); |
| |
| connected = hidpp_is_connected(hidpp); |
| atomic_set(&hidpp->connected, connected); |
| if (!(hidpp->quirks & HIDPP_QUIRK_UNIFYING)) { |
| if (!connected) { |
| ret = -ENODEV; |
| hid_err(hdev, "Device not connected"); |
| goto hid_hw_open_failed; |
| } |
| |
| hid_info(hdev, "HID++ %u.%u device connected.\n", |
| hidpp->protocol_major, hidpp->protocol_minor); |
| |
| hidpp_overwrite_name(hdev); |
| } |
| |
| if (connected && (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)) { |
| ret = wtp_get_config(hidpp); |
| if (ret) |
| goto hid_hw_open_failed; |
| } else if (connected && (hidpp->quirks & HIDPP_QUIRK_CLASS_G920)) { |
| ret = g920_get_config(hidpp); |
| if (ret) |
| |