* [PATCH 1/2] HID: Create header for Logitech HID++ driver
2015-11-21 12:37 [PATCH 0/2] HID: Force feedback support for the Logitech G920 Wheel Edwin Velds
@ 2015-11-21 12:37 ` Edwin Velds
2015-11-21 12:37 ` [PATCH 2/2] HID: Force feedback support for the Logitech G920 Edwin Velds
` (2 subsequent siblings)
3 siblings, 0 replies; 6+ messages in thread
From: Edwin Velds @ 2015-11-21 12:37 UTC (permalink / raw)
To: linux-input
Cc: linux-kernel, Simon Wood, Jiri Kosina, Michal Malý,
elias vanderstuyft, Benjamin Tissoires, Dmitry Torokhov,
Edwin Velds
Renamed the hid-logitech-hidpp.c file and created a header. This prepares
for building the driver from multiple sources.
Signed-off-by: Edwin Velds <e.velds@gmail.com>
---
drivers/hid/Makefile | 2 +
drivers/hid/hid-logitech-hidpp-base.c | 1831 +++++++++++++++++++++++++++++++
drivers/hid/hid-logitech-hidpp-base.h | 81 ++
drivers/hid/hid-logitech-hidpp.c | 1900 ---------------------------------
4 files changed, 1914 insertions(+), 1900 deletions(-)
create mode 100644 drivers/hid/hid-logitech-hidpp-base.c
create mode 100644 drivers/hid/hid-logitech-hidpp-base.h
delete mode 100644 drivers/hid/hid-logitech-hidpp.c
diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile
index 00011fe..a01c448 100644
--- a/drivers/hid/Makefile
+++ b/drivers/hid/Makefile
@@ -17,6 +17,8 @@ hid-logitech-$(CONFIG_LOGIRUMBLEPAD2_FF) += hid-lg2ff.o
hid-logitech-$(CONFIG_LOGIG940_FF) += hid-lg3ff.o
hid-logitech-$(CONFIG_LOGIWHEELS_FF) += hid-lg4ff.o
+hid-logitech-hidpp-y := hid-logitech-hidpp-base.o
+
hid-wiimote-y := hid-wiimote-core.o hid-wiimote-modules.o
hid-wiimote-$(CONFIG_DEBUG_FS) += hid-wiimote-debug.o
diff --git a/drivers/hid/hid-logitech-hidpp-base.c b/drivers/hid/hid-logitech-hidpp-base.c
new file mode 100644
index 0000000..40ab079
--- /dev/null
+++ b/drivers/hid/hid-logitech-hidpp-base.c
@@ -0,0 +1,1831 @@
+/*
+ * 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/module.h>
+#include <linux/slab.h>
+#include <linux/sched.h>
+#include <linux/input/mt.h>
+#include <asm/unaligned.h>
+#include "hid-ids.h"
+#include "hid-logitech-hidpp-base.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_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)
+
+/* bits 2..20 are reserved for classes */
+#define HIDPP_QUIRK_CONNECT_EVENTS BIT(21)
+#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_DELAYED_INIT (HIDPP_QUIRK_NO_HIDINPUT | \
+ HIDPP_QUIRK_CONNECT_EVENTS)
+
+
+/* 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;
+
+}
+
+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_PAIRING_INFORMATION 0xB5
+#define DEVICE_NAME 0x40
+
+static char *hidpp_get_unifying_name(struct hidpp_device *hidpp_dev)
+{
+ struct hidpp_report response;
+ int ret;
+ /* hid-logitech-dj is in charge of setting the right device index */
+ u8 params[1] = { 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;
+}
+
+/* -------------------------------------------------------------------------- */
+/* 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;
+
+ *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;
+}
+
+/* -------------------------------------------------------------------------- */
+/* 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]);
+ }
+}
+
+/* ************************************************************************** */
+/* */
+/* 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 (!connected)
+ return 0;
+
+ 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);
+
+ if (!connected)
+ return -ENODEV;
+
+ 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 (!connected)
+ return 0;
+
+ 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
+
+/* Using session ID = 1 */
+#define CMD_G920_FORCE_GET_APERTURE 0x51
+#define CMD_G920_FORCE_SET_APERTURE 0x61
+
+struct g920_private_data {
+ u8 force_feature;
+ u16 range;
+};
+
+#define to_hid_device(pdev) container_of(pdev, struct hid_device, dev)
+
+static ssize_t g920_range_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct hid_device *hid = to_hid_device(dev);
+ struct hidpp_device *hidpp = hid_get_drvdata(hid);
+ struct g920_private_data *pdata;
+
+ pdata = hidpp->private_data;
+ if (!pdata) {
+ hid_err(hid, "Private driver data not found!\n");
+ return -EINVAL;
+ }
+
+ return scnprintf(buf, PAGE_SIZE, "%u\n", pdata->range);
+}
+
+static ssize_t g920_range_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct hid_device *hid = to_hid_device(dev);
+ struct hidpp_device *hidpp = hid_get_drvdata(hid);
+ struct g920_private_data *pdata;
+ struct hidpp_report response;
+ u8 params[2];
+ int ret;
+ u16 range = simple_strtoul(buf, NULL, 10);
+
+ pdata = hidpp->private_data;
+ if (!pdata) {
+ hid_err(hid, "Private driver data not found!\n");
+ return -EINVAL;
+ }
+
+ if (range < 180)
+ range = 180;
+ else if (range > 900)
+ range = 900;
+
+ params[0] = range >> 8;
+ params[1] = range & 0x00FF;
+
+ ret = hidpp_send_fap_command_sync(hidpp, pdata->force_feature,
+ CMD_G920_FORCE_SET_APERTURE, params, 2, &response);
+ if (ret)
+ return ret;
+
+ pdata->range = range;
+ return count;
+}
+
+static DEVICE_ATTR(range, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH, g920_range_show, g920_range_store);
+
+static int g920_allocate(struct hid_device *hdev)
+{
+ struct hidpp_device *hidpp = hid_get_drvdata(hdev);
+ struct g920_private_data *pdata;
+
+ pdata = devm_kzalloc(&hdev->dev, sizeof(struct g920_private_data),
+ GFP_KERNEL);
+ if (!pdata)
+ return -ENOMEM;
+
+ hidpp->private_data = pdata;
+
+ return 0;
+}
+
+static int g920_get_config(struct hidpp_device *hidpp)
+{
+ struct g920_private_data *pdata = hidpp->private_data;
+ struct hidpp_report response;
+ u8 feature_type;
+ u8 feature_index;
+ int ret;
+
+ pdata = hidpp->private_data;
+ if (!pdata) {
+ hid_err(hidpp->hid_dev, "Private driver data not found!\n");
+ return -EINVAL;
+ }
+
+ /* 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;
+
+ pdata->force_feature = feature_index;
+
+ /* Read current Range */
+ ret = hidpp_send_fap_command_sync(hidpp, feature_index,
+ CMD_G920_FORCE_GET_APERTURE, 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;
+
+ pdata->range = get_unaligned_be16(&response.fap.params[0]);
+
+ /* Create sysfs interface */
+ ret = device_create_file(&(hidpp->hid_dev->dev), &dev_attr_range);
+ if (ret)
+ hid_warn(hidpp->hid_dev, "Unable to create sysfs interface for \"range\", 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;
+
+ /*
+ * 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 ((hidpp->quirks & HIDPP_QUIRK_CONNECT_EVENTS) &&
+ (schedule_work(&hidpp->work) == 0))
+ dbg_hid("%s: connect event already queued\n", __func__);
+ return 1;
+ }
+
+ 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 void hidpp_overwrite_name(struct hid_device *hdev, bool use_unifying)
+{
+ struct hidpp_device *hidpp = hid_get_drvdata(hdev);
+ char *name;
+
+ if (use_unifying)
+ /*
+ * the device is connected through an Unifying receiver, and
+ * might not be already connected.
+ * Ask the receiver for its name.
+ */
+ name = hidpp_get_unifying_name(hidpp);
+ else
+ 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 (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;
+ }
+
+ if (!connected || hidpp->delayed_input)
+ 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->quirks & HIDPP_QUIRK_NO_HIDINPUT))
+ /* if HID created the input nodes for us, we can stop now */
+ return;
+
+ if (!hidpp->name || hidpp->name == hdev->name) {
+ 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;
+ }
+
+ 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 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 (disable_raw_mode) {
+ hidpp->quirks &= ~HIDPP_QUIRK_CLASS_WTP;
+ hidpp->quirks &= ~HIDPP_QUIRK_CONNECT_EVENTS;
+ 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;
+ } else if (hidpp->quirks & HIDPP_QUIRK_CLASS_G920) {
+ ret = g920_allocate(hdev);
+ if (ret)
+ goto allocate_fail;
+ }
+
+ INIT_WORK(&hidpp->work, delayed_work_cb);
+ mutex_init(&hidpp->send_mutex);
+ init_waitqueue_head(&hidpp->wait);
+
+ 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);
+
+ connected = hidpp_is_connected(hidpp);
+ if (id->group != HID_GROUP_LOGITECH_DJ_DEVICE) {
+ 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, id->group == HID_GROUP_LOGITECH_DJ_DEVICE);
+ atomic_set(&hidpp->connected, connected);
+
+ 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)
+ goto hid_hw_open_failed;
+ }
+
+ /* Block incoming packets */
+ hid_device_io_stop(hdev);
+
+ if (!(hidpp->quirks & HIDPP_QUIRK_CLASS_G920)) {
+ ret = hid_hw_start(hdev, connect_mask);
+ if (ret) {
+ hid_err(hdev, "%s:hid_hw_start returned error\n", __func__);
+ goto hid_hw_start_fail;
+ }
+ }
+
+ if (hidpp->quirks & HIDPP_QUIRK_CONNECT_EVENTS) {
+ /* Allow incoming packets */
+ hid_device_io_start(hdev);
+
+ hidpp_connect_event(hidpp);
+ }
+
+ return ret;
+
+hid_hw_open_failed:
+ hid_device_io_stop(hdev);
+ if (hidpp->quirks & HIDPP_QUIRK_CLASS_G920) {
+ device_remove_file(&hdev->dev, &dev_attr_range);
+ hid_hw_close(hdev);
+ hid_hw_stop(hdev);
+ }
+hid_hw_start_fail:
+hid_parse_fail:
+ cancel_work_sync(&hidpp->work);
+ mutex_destroy(&hidpp->send_mutex);
+allocate_fail:
+ hid_set_drvdata(hdev, NULL);
+ return ret;
+}
+
+static void hidpp_remove(struct hid_device *hdev)
+{
+ struct hidpp_device *hidpp = hid_get_drvdata(hdev);
+
+ if (hidpp->quirks & HIDPP_QUIRK_CLASS_G920) {
+ device_remove_file(&hdev->dev, &dev_attr_range);
+ hid_hw_close(hdev);
+ }
+ hid_hw_stop(hdev);
+ cancel_work_sync(&hidpp->work);
+ mutex_destroy(&hidpp->send_mutex);
+}
+
+static const struct hid_device_id hidpp_devices[] = {
+ { /* wireless touchpad */
+ HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
+ USB_VENDOR_ID_LOGITECH, 0x4011),
+ .driver_data = HIDPP_QUIRK_CLASS_WTP | HIDPP_QUIRK_DELAYED_INIT |
+ HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS },
+ { /* wireless touchpad T650 */
+ HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
+ USB_VENDOR_ID_LOGITECH, 0x4101),
+ .driver_data = HIDPP_QUIRK_CLASS_WTP | HIDPP_QUIRK_DELAYED_INIT },
+ { /* wireless touchpad T651 */
+ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
+ USB_DEVICE_ID_LOGITECH_T651),
+ .driver_data = HIDPP_QUIRK_CLASS_WTP },
+ { /* Mouse logitech M560 */
+ HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
+ USB_VENDOR_ID_LOGITECH, 0x402d),
+ .driver_data = HIDPP_QUIRK_DELAYED_INIT | HIDPP_QUIRK_CLASS_M560 },
+ { /* Keyboard logitech K400 */
+ HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
+ USB_VENDOR_ID_LOGITECH, 0x4024),
+ .driver_data = HIDPP_QUIRK_CONNECT_EVENTS | HIDPP_QUIRK_CLASS_K400 },
+
+ { HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
+ USB_VENDOR_ID_LOGITECH, HID_ANY_ID)},
+
+ { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G920_WHEEL),
+ .driver_data = HIDPP_QUIRK_CLASS_G920 | HIDPP_QUIRK_FORCE_OUTPUT_REPORTS},
+ {}
+};
+
+MODULE_DEVICE_TABLE(hid, hidpp_devices);
+
+static struct hid_driver hidpp_driver = {
+ .name = "logitech-hidpp-device",
+ .id_table = hidpp_devices,
+ .probe = hidpp_probe,
+ .remove = hidpp_remove,
+ .raw_event = hidpp_raw_event,
+ .input_configured = hidpp_input_configured,
+ .input_mapping = hidpp_input_mapping,
+ .input_mapped = hidpp_input_mapped,
+};
+
+module_hid_driver(hidpp_driver);
diff --git a/drivers/hid/hid-logitech-hidpp-base.h b/drivers/hid/hid-logitech-hidpp-base.h
new file mode 100644
index 0000000..4d73055
--- /dev/null
+++ b/drivers/hid/hid-logitech-hidpp-base.h
@@ -0,0 +1,81 @@
+#ifndef __HID_LOGITECH_HIDPP_H
+#define __HID_LOGITECH_HIDPP_H
+
+#include <linux/hid.h>
+#include <linux/kfifo.h>
+
+
+/*
+ * 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.
+ */
+
+#define HIDPP_REPORT_SHORT_LENGTH 7
+#define HIDPP_REPORT_LONG_LENGTH 20
+#define HIDPP_REPORT_VERY_LONG_LENGTH 64
+
+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_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;
+};
+
+
+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);
+
+#endif
diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c
deleted file mode 100644
index f2a4811..0000000
--- a/drivers/hid/hid-logitech-hidpp.c
+++ /dev/null
@@ -1,1900 +0,0 @@
-/*
- * 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/hid.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/sched.h>
-#include <linux/kfifo.h>
-#include <linux/input/mt.h>
-#include <asm/unaligned.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)
-
-/* bits 2..20 are reserved for classes */
-#define HIDPP_QUIRK_CONNECT_EVENTS BIT(21)
-#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_DELAYED_INIT (HIDPP_QUIRK_NO_HIDINPUT | \
- HIDPP_QUIRK_CONNECT_EVENTS)
-
-/*
- * 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_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;
-};
-
-
-/* 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_PAIRING_INFORMATION 0xB5
-#define DEVICE_NAME 0x40
-
-static char *hidpp_get_unifying_name(struct hidpp_device *hidpp_dev)
-{
- struct hidpp_report response;
- int ret;
- /* hid-logitech-dj is in charge of setting the right device index */
- u8 params[1] = { 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;
-}
-
-/* -------------------------------------------------------------------------- */
-/* 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;
-
- *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;
-}
-
-/* -------------------------------------------------------------------------- */
-/* 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]);
- }
-}
-
-/* ************************************************************************** */
-/* */
-/* 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 (!connected)
- return 0;
-
- 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);
-
- if (!connected)
- return -ENODEV;
-
- 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 (!connected)
- return 0;
-
- 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
-
-/* Using session ID = 1 */
-#define CMD_G920_FORCE_GET_APERTURE 0x51
-#define CMD_G920_FORCE_SET_APERTURE 0x61
-
-struct g920_private_data {
- u8 force_feature;
- u16 range;
-};
-
-#define to_hid_device(pdev) container_of(pdev, struct hid_device, dev)
-
-static ssize_t g920_range_show(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct hid_device *hid = to_hid_device(dev);
- struct hidpp_device *hidpp = hid_get_drvdata(hid);
- struct g920_private_data *pdata;
-
- pdata = hidpp->private_data;
- if (!pdata) {
- hid_err(hid, "Private driver data not found!\n");
- return -EINVAL;
- }
-
- return scnprintf(buf, PAGE_SIZE, "%u\n", pdata->range);
-}
-
-static ssize_t g920_range_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct hid_device *hid = to_hid_device(dev);
- struct hidpp_device *hidpp = hid_get_drvdata(hid);
- struct g920_private_data *pdata;
- struct hidpp_report response;
- u8 params[2];
- int ret;
- u16 range = simple_strtoul(buf, NULL, 10);
-
- pdata = hidpp->private_data;
- if (!pdata) {
- hid_err(hid, "Private driver data not found!\n");
- return -EINVAL;
- }
-
- if (range < 180)
- range = 180;
- else if (range > 900)
- range = 900;
-
- params[0] = range >> 8;
- params[1] = range & 0x00FF;
-
- ret = hidpp_send_fap_command_sync(hidpp, pdata->force_feature,
- CMD_G920_FORCE_SET_APERTURE, params, 2, &response);
- if (ret)
- return ret;
-
- pdata->range = range;
- return count;
-}
-
-static DEVICE_ATTR(range, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH, g920_range_show, g920_range_store);
-
-static int g920_allocate(struct hid_device *hdev)
-{
- struct hidpp_device *hidpp = hid_get_drvdata(hdev);
- struct g920_private_data *pdata;
-
- pdata = devm_kzalloc(&hdev->dev, sizeof(struct g920_private_data),
- GFP_KERNEL);
- if (!pdata)
- return -ENOMEM;
-
- hidpp->private_data = pdata;
-
- return 0;
-}
-
-static int g920_get_config(struct hidpp_device *hidpp)
-{
- struct g920_private_data *pdata = hidpp->private_data;
- struct hidpp_report response;
- u8 feature_type;
- u8 feature_index;
- int ret;
-
- pdata = hidpp->private_data;
- if (!pdata) {
- hid_err(hidpp->hid_dev, "Private driver data not found!\n");
- return -EINVAL;
- }
-
- /* 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;
-
- pdata->force_feature = feature_index;
-
- /* Read current Range */
- ret = hidpp_send_fap_command_sync(hidpp, feature_index,
- CMD_G920_FORCE_GET_APERTURE, 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;
-
- pdata->range = get_unaligned_be16(&response.fap.params[0]);
-
- /* Create sysfs interface */
- ret = device_create_file(&(hidpp->hid_dev->dev), &dev_attr_range);
- if (ret)
- hid_warn(hidpp->hid_dev, "Unable to create sysfs interface for \"range\", 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;
-
- /*
- * 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 ((hidpp->quirks & HIDPP_QUIRK_CONNECT_EVENTS) &&
- (schedule_work(&hidpp->work) == 0))
- dbg_hid("%s: connect event already queued\n", __func__);
- return 1;
- }
-
- 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 void hidpp_overwrite_name(struct hid_device *hdev, bool use_unifying)
-{
- struct hidpp_device *hidpp = hid_get_drvdata(hdev);
- char *name;
-
- if (use_unifying)
- /*
- * the device is connected through an Unifying receiver, and
- * might not be already connected.
- * Ask the receiver for its name.
- */
- name = hidpp_get_unifying_name(hidpp);
- else
- 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 (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;
- }
-
- if (!connected || hidpp->delayed_input)
- 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->quirks & HIDPP_QUIRK_NO_HIDINPUT))
- /* if HID created the input nodes for us, we can stop now */
- return;
-
- if (!hidpp->name || hidpp->name == hdev->name) {
- 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;
- }
-
- 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 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 (disable_raw_mode) {
- hidpp->quirks &= ~HIDPP_QUIRK_CLASS_WTP;
- hidpp->quirks &= ~HIDPP_QUIRK_CONNECT_EVENTS;
- 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;
- } else if (hidpp->quirks & HIDPP_QUIRK_CLASS_G920) {
- ret = g920_allocate(hdev);
- if (ret)
- goto allocate_fail;
- }
-
- INIT_WORK(&hidpp->work, delayed_work_cb);
- mutex_init(&hidpp->send_mutex);
- init_waitqueue_head(&hidpp->wait);
-
- 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);
-
- connected = hidpp_is_connected(hidpp);
- if (id->group != HID_GROUP_LOGITECH_DJ_DEVICE) {
- 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, id->group == HID_GROUP_LOGITECH_DJ_DEVICE);
- atomic_set(&hidpp->connected, connected);
-
- 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)
- goto hid_hw_open_failed;
- }
-
- /* Block incoming packets */
- hid_device_io_stop(hdev);
-
- if (!(hidpp->quirks & HIDPP_QUIRK_CLASS_G920)) {
- ret = hid_hw_start(hdev, connect_mask);
- if (ret) {
- hid_err(hdev, "%s:hid_hw_start returned error\n", __func__);
- goto hid_hw_start_fail;
- }
- }
-
- if (hidpp->quirks & HIDPP_QUIRK_CONNECT_EVENTS) {
- /* Allow incoming packets */
- hid_device_io_start(hdev);
-
- hidpp_connect_event(hidpp);
- }
-
- return ret;
-
-hid_hw_open_failed:
- hid_device_io_stop(hdev);
- if (hidpp->quirks & HIDPP_QUIRK_CLASS_G920) {
- device_remove_file(&hdev->dev, &dev_attr_range);
- hid_hw_close(hdev);
- hid_hw_stop(hdev);
- }
-hid_hw_start_fail:
-hid_parse_fail:
- cancel_work_sync(&hidpp->work);
- mutex_destroy(&hidpp->send_mutex);
-allocate_fail:
- hid_set_drvdata(hdev, NULL);
- return ret;
-}
-
-static void hidpp_remove(struct hid_device *hdev)
-{
- struct hidpp_device *hidpp = hid_get_drvdata(hdev);
-
- if (hidpp->quirks & HIDPP_QUIRK_CLASS_G920) {
- device_remove_file(&hdev->dev, &dev_attr_range);
- hid_hw_close(hdev);
- }
- hid_hw_stop(hdev);
- cancel_work_sync(&hidpp->work);
- mutex_destroy(&hidpp->send_mutex);
-}
-
-static const struct hid_device_id hidpp_devices[] = {
- { /* wireless touchpad */
- HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
- USB_VENDOR_ID_LOGITECH, 0x4011),
- .driver_data = HIDPP_QUIRK_CLASS_WTP | HIDPP_QUIRK_DELAYED_INIT |
- HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS },
- { /* wireless touchpad T650 */
- HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
- USB_VENDOR_ID_LOGITECH, 0x4101),
- .driver_data = HIDPP_QUIRK_CLASS_WTP | HIDPP_QUIRK_DELAYED_INIT },
- { /* wireless touchpad T651 */
- HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
- USB_DEVICE_ID_LOGITECH_T651),
- .driver_data = HIDPP_QUIRK_CLASS_WTP },
- { /* Mouse logitech M560 */
- HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
- USB_VENDOR_ID_LOGITECH, 0x402d),
- .driver_data = HIDPP_QUIRK_DELAYED_INIT | HIDPP_QUIRK_CLASS_M560 },
- { /* Keyboard logitech K400 */
- HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
- USB_VENDOR_ID_LOGITECH, 0x4024),
- .driver_data = HIDPP_QUIRK_CONNECT_EVENTS | HIDPP_QUIRK_CLASS_K400 },
-
- { HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
- USB_VENDOR_ID_LOGITECH, HID_ANY_ID)},
-
- { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G920_WHEEL),
- .driver_data = HIDPP_QUIRK_CLASS_G920 | HIDPP_QUIRK_FORCE_OUTPUT_REPORTS},
- {}
-};
-
-MODULE_DEVICE_TABLE(hid, hidpp_devices);
-
-static struct hid_driver hidpp_driver = {
- .name = "logitech-hidpp-device",
- .id_table = hidpp_devices,
- .probe = hidpp_probe,
- .remove = hidpp_remove,
- .raw_event = hidpp_raw_event,
- .input_configured = hidpp_input_configured,
- .input_mapping = hidpp_input_mapping,
- .input_mapped = hidpp_input_mapped,
-};
-
-module_hid_driver(hidpp_driver);
--
2.5.0
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH 2/2] HID: Force feedback support for the Logitech G920
2015-11-21 12:37 [PATCH 0/2] HID: Force feedback support for the Logitech G920 Wheel Edwin Velds
2015-11-21 12:37 ` [PATCH 1/2] HID: Create header for Logitech HID++ driver Edwin Velds
@ 2015-11-21 12:37 ` Edwin Velds
2015-11-26 14:42 ` [PATCH 0/2] HID: Force feedback support for the Logitech G920 Wheel Jiri Kosina
2015-11-28 7:53 ` Elias Vanderstuyft
3 siblings, 0 replies; 6+ messages in thread
From: Edwin Velds @ 2015-11-21 12:37 UTC (permalink / raw)
To: linux-input
Cc: linux-kernel, Simon Wood, Jiri Kosina, Michal Malý,
elias vanderstuyft, Benjamin Tissoires, Dmitry Torokhov,
Edwin Velds
This patch implements force feedback support for the Logitech
G920 Driving Force Racing Wheel. It is a generic implementation
of feature 0x8123 of the Logitech HID++ protocol and should be
usable for any future devices that implement this feature.
The driving supports everything that is supported by the G920
firmware:
FF_CONSTANT
FF_PERIODIC
FF_SINE
FF_SQUARE
FF_SAW_UP
FF_SAW_DOWN
FF_TRIANGLE
FF_SPRING
FF_DAMPER
FF_AUTOCENTER
FF_GAIN
Both envelopes and replay values are supported as well.
Note that the G920 (like previous Logitech wheels) starts with
a heavy default spring enabled. Unlike previous wheels, there
is no command to disable this spring and it will only release
when other forces are downloaded into the device.
Signed-off-by: Edwin Velds <e.velds@gmail.com>
---
drivers/hid/Makefile | 2 +-
drivers/hid/hid-logitech-hidpp-base.c | 114 +------
drivers/hid/hid-logitech-hidpp-ff.c | 540 ++++++++++++++++++++++++++++++++++
drivers/hid/hid-logitech-hidpp-ff.h | 9 +
4 files changed, 554 insertions(+), 111 deletions(-)
create mode 100644 drivers/hid/hid-logitech-hidpp-ff.c
create mode 100644 drivers/hid/hid-logitech-hidpp-ff.h
diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile
index a01c448..fd49428 100644
--- a/drivers/hid/Makefile
+++ b/drivers/hid/Makefile
@@ -17,7 +17,7 @@ hid-logitech-$(CONFIG_LOGIRUMBLEPAD2_FF) += hid-lg2ff.o
hid-logitech-$(CONFIG_LOGIG940_FF) += hid-lg3ff.o
hid-logitech-$(CONFIG_LOGIWHEELS_FF) += hid-lg4ff.o
-hid-logitech-hidpp-y := hid-logitech-hidpp-base.o
+hid-logitech-hidpp-y := hid-logitech-hidpp-base.o hid-logitech-hidpp-ff.o
hid-wiimote-y := hid-wiimote-core.o hid-wiimote-modules.o
hid-wiimote-$(CONFIG_DEBUG_FS) += hid-wiimote-debug.o
diff --git a/drivers/hid/hid-logitech-hidpp-base.c b/drivers/hid/hid-logitech-hidpp-base.c
index 40ab079..9b6d82a 100644
--- a/drivers/hid/hid-logitech-hidpp-base.c
+++ b/drivers/hid/hid-logitech-hidpp-base.c
@@ -22,6 +22,7 @@
#include <asm/unaligned.h>
#include "hid-ids.h"
#include "hid-logitech-hidpp-base.h"
+#include "hid-logitech-hidpp-ff.h"
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
@@ -1232,123 +1233,21 @@ static int k400_connect(struct hid_device *hdev, bool connected)
#define HIDPP_PAGE_G920_FORCE_FEEDBACK 0x8123
-/* Using session ID = 1 */
-#define CMD_G920_FORCE_GET_APERTURE 0x51
-#define CMD_G920_FORCE_SET_APERTURE 0x61
-
-struct g920_private_data {
- u8 force_feature;
- u16 range;
-};
-
-#define to_hid_device(pdev) container_of(pdev, struct hid_device, dev)
-
-static ssize_t g920_range_show(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct hid_device *hid = to_hid_device(dev);
- struct hidpp_device *hidpp = hid_get_drvdata(hid);
- struct g920_private_data *pdata;
-
- pdata = hidpp->private_data;
- if (!pdata) {
- hid_err(hid, "Private driver data not found!\n");
- return -EINVAL;
- }
-
- return scnprintf(buf, PAGE_SIZE, "%u\n", pdata->range);
-}
-
-static ssize_t g920_range_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct hid_device *hid = to_hid_device(dev);
- struct hidpp_device *hidpp = hid_get_drvdata(hid);
- struct g920_private_data *pdata;
- struct hidpp_report response;
- u8 params[2];
- int ret;
- u16 range = simple_strtoul(buf, NULL, 10);
-
- pdata = hidpp->private_data;
- if (!pdata) {
- hid_err(hid, "Private driver data not found!\n");
- return -EINVAL;
- }
-
- if (range < 180)
- range = 180;
- else if (range > 900)
- range = 900;
-
- params[0] = range >> 8;
- params[1] = range & 0x00FF;
-
- ret = hidpp_send_fap_command_sync(hidpp, pdata->force_feature,
- CMD_G920_FORCE_SET_APERTURE, params, 2, &response);
- if (ret)
- return ret;
-
- pdata->range = range;
- return count;
-}
-
-static DEVICE_ATTR(range, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH, g920_range_show, g920_range_store);
-
-static int g920_allocate(struct hid_device *hdev)
-{
- struct hidpp_device *hidpp = hid_get_drvdata(hdev);
- struct g920_private_data *pdata;
-
- pdata = devm_kzalloc(&hdev->dev, sizeof(struct g920_private_data),
- GFP_KERNEL);
- if (!pdata)
- return -ENOMEM;
-
- hidpp->private_data = pdata;
-
- return 0;
-}
-
static int g920_get_config(struct hidpp_device *hidpp)
{
- struct g920_private_data *pdata = hidpp->private_data;
- struct hidpp_report response;
u8 feature_type;
u8 feature_index;
int ret;
- pdata = hidpp->private_data;
- if (!pdata) {
- hid_err(hidpp->hid_dev, "Private driver data not found!\n");
- return -EINVAL;
- }
-
/* 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;
- pdata->force_feature = feature_index;
-
- /* Read current Range */
- ret = hidpp_send_fap_command_sync(hidpp, feature_index,
- CMD_G920_FORCE_GET_APERTURE, NULL, 0, &response);
- if (ret > 0) {
- hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n",
- __func__, ret);
- return -EPROTO;
- }
+ ret = hidpp_ff_init(hidpp, feature_index);
if (ret)
- return ret;
-
- pdata->range = get_unaligned_be16(&response.fap.params[0]);
-
- /* Create sysfs interface */
- ret = device_create_file(&(hidpp->hid_dev->dev), &dev_attr_range);
- if (ret)
- hid_warn(hidpp->hid_dev, "Unable to create sysfs interface for \"range\", errno %d\n", ret);
+ hid_warn(hidpp->hid_dev, "Unable to initialize force feedback support, errno %d\n", ret);
return 0;
}
@@ -1672,10 +1571,6 @@ static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id)
ret = k400_allocate(hdev);
if (ret)
goto allocate_fail;
- } else if (hidpp->quirks & HIDPP_QUIRK_CLASS_G920) {
- ret = g920_allocate(hdev);
- if (ret)
- goto allocate_fail;
}
INIT_WORK(&hidpp->work, delayed_work_cb);
@@ -1758,7 +1653,6 @@ static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id)
hid_hw_open_failed:
hid_device_io_stop(hdev);
if (hidpp->quirks & HIDPP_QUIRK_CLASS_G920) {
- device_remove_file(&hdev->dev, &dev_attr_range);
hid_hw_close(hdev);
hid_hw_stop(hdev);
}
@@ -1776,7 +1670,7 @@ static void hidpp_remove(struct hid_device *hdev)
struct hidpp_device *hidpp = hid_get_drvdata(hdev);
if (hidpp->quirks & HIDPP_QUIRK_CLASS_G920) {
- device_remove_file(&hdev->dev, &dev_attr_range);
+ hidpp_ff_deinit(hdev);
hid_hw_close(hdev);
}
hid_hw_stop(hdev);
diff --git a/drivers/hid/hid-logitech-hidpp-ff.c b/drivers/hid/hid-logitech-hidpp-ff.c
new file mode 100644
index 0000000..31ae359
--- /dev/null
+++ b/drivers/hid/hid-logitech-hidpp-ff.c
@@ -0,0 +1,540 @@
+/*
+ * Force feedback support for Logitech HID++ devices [feature 0x8123]
+ *
+ * Currently only used for the G920 Driving Force Racing Wheel
+ *
+ * Copyright (c) 2015 Edwin Velds <e.velds@gmail.com>
+ */
+
+/*
+ * 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.
+ */
+
+#include <linux/device.h>
+#include <linux/input.h>
+#include <linux/workqueue.h>
+#include <asm/unaligned.h>
+#include <linux/atomic.h>
+#include <linux/fixp-arith.h>
+#include "hid-logitech-hidpp-ff.h"
+
+
+#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_AUTOSTART 0x80
+
+#define HIDPP_FF_EFFECTID_NONE -1
+#define HIDPP_FF_EFFECTID_AUTOCENTER -2
+
+#define HIDPP_FF_MAX_PARAMS 20
+
+#define to_hid_device(pdev) container_of(pdev, struct hid_device, dev)
+
+
+struct hidpp_ff_private_data {
+ struct hidpp_device *hidpp;
+ u8 feature_index;
+ 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 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(struct hidpp_ff_work_data), 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 >> 8;
+ 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 >> 8;
+ 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_SPRING:
+ case FF_DAMPER:
+ params[1] = effect->type == FF_SPRING ? HIDPP_FF_EFFECT_SPRING : HIDPP_FF_EFFECT_DAMPER;
+ 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",
+ effect->type == FF_SPRING ? "spring" : "damper",
+ 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, 2);
+}
+
+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);
+
+ if (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;
+ /* saturation and coeff to equal value */
+ params[6] = params[8] = params[14] = params[16] = magnitude >> 9;
+ params[7] = params[9] = params[15] = params[17] = (magnitude & 255) >> 1;
+ /* 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));
+ } else {
+ if (data->slot_autocenter) {
+ /* remove spring effect */
+ hidpp_ff_queue_work(data, HIDPP_FF_EFFECTID_AUTOCENTER, HIDPP_FF_DESTROY_EFFECT, params, 1);
+ }
+ }
+}
+
+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, 4);
+}
+
+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, 2);
+
+ 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);
+}
+
+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;
+ struct ff_device *ff;
+ struct hidpp_report response;
+ struct hidpp_ff_private_data *data;
+ int error, j, num_slots;
+
+ if (!dev) {
+ hid_err(hid, "Struct input_dev not set!\n");
+ return -EINVAL;
+ }
+
+ /* Set supported force feedback capabilities */
+ for (j = 0; hiddpp_ff_effects[j] >= 0; j++)
+ set_bit(hiddpp_ff_effects[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];
+
+ 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 = kzalloc(num_slots*sizeof(int), GFP_KERNEL);
+ if (!data->effect_ids) {
+ kfree(data);
+ return -ENOMEM;
+ }
+ data->hidpp = hidpp;
+ data->feature_index = feature_index;
+ 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);
+
+ return 0;
+}
+
+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;
+}
diff --git a/drivers/hid/hid-logitech-hidpp-ff.h b/drivers/hid/hid-logitech-hidpp-ff.h
new file mode 100644
index 0000000..e153019
--- /dev/null
+++ b/drivers/hid/hid-logitech-hidpp-ff.h
@@ -0,0 +1,9 @@
+#ifndef __HID_LOGITECH_HIDPP_FF_H
+#define __HID_LOGITECH_HIDPP_FF_H
+
+#include "hid-logitech-hidpp-base.h"
+
+int hidpp_ff_init(struct hidpp_device *hidpp, u8 feature_index);
+int hidpp_ff_deinit(struct hid_device *hid);
+
+#endif
--
2.5.0
^ permalink raw reply related [flat|nested] 6+ messages in thread