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508 lines
12 KiB
C
508 lines
12 KiB
C
/*
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* Copyright (c) 2016 Masaki Ota <masaki.ota@jp.alps.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/hid.h>
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#include <linux/input.h>
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#include <linux/input/mt.h>
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#include <linux/module.h>
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#include <asm/unaligned.h>
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#include "hid-ids.h"
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/* ALPS Device Product ID */
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#define HID_PRODUCT_ID_T3_BTNLESS 0xD0C0
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#define HID_PRODUCT_ID_COSMO 0x1202
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#define HID_PRODUCT_ID_U1_PTP_1 0x1207
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#define HID_PRODUCT_ID_U1 0x1209
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#define HID_PRODUCT_ID_U1_PTP_2 0x120A
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#define HID_PRODUCT_ID_U1_DUAL 0x120B
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#define HID_PRODUCT_ID_T4_BTNLESS 0x120C
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#define DEV_SINGLEPOINT 0x01
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#define DEV_DUALPOINT 0x02
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#define U1_MOUSE_REPORT_ID 0x01 /* Mouse data ReportID */
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#define U1_ABSOLUTE_REPORT_ID 0x03 /* Absolute data ReportID */
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#define U1_FEATURE_REPORT_ID 0x05 /* Feature ReportID */
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#define U1_SP_ABSOLUTE_REPORT_ID 0x06 /* Feature ReportID */
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#define U1_FEATURE_REPORT_LEN 0x08 /* Feature Report Length */
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#define U1_FEATURE_REPORT_LEN_ALL 0x0A
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#define U1_CMD_REGISTER_READ 0xD1
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#define U1_CMD_REGISTER_WRITE 0xD2
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#define U1_DEVTYPE_SP_SUPPORT 0x10 /* SP Support */
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#define U1_DISABLE_DEV 0x01
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#define U1_TP_ABS_MODE 0x02
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#define U1_SP_ABS_MODE 0x80
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#define ADDRESS_U1_DEV_CTRL_1 0x00800040
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#define ADDRESS_U1_DEVICE_TYP 0x00800043
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#define ADDRESS_U1_NUM_SENS_X 0x00800047
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#define ADDRESS_U1_NUM_SENS_Y 0x00800048
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#define ADDRESS_U1_PITCH_SENS_X 0x00800049
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#define ADDRESS_U1_PITCH_SENS_Y 0x0080004A
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#define ADDRESS_U1_RESO_DWN_ABS 0x0080004E
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#define ADDRESS_U1_PAD_BTN 0x00800052
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#define ADDRESS_U1_SP_BTN 0x0080009F
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#define MAX_TOUCHES 5
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/**
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* struct u1_data
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*
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* @input: pointer to the kernel input device
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* @input2: pointer to the kernel input2 device
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* @hdev: pointer to the struct hid_device
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*
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* @dev_ctrl: device control parameter
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* @dev_type: device type
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* @sen_line_num_x: number of sensor line of X
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* @sen_line_num_y: number of sensor line of Y
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* @pitch_x: sensor pitch of X
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* @pitch_y: sensor pitch of Y
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* @resolution: resolution
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* @btn_info: button information
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* @x_active_len_mm: active area length of X (mm)
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* @y_active_len_mm: active area length of Y (mm)
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* @x_max: maximum x coordinate value
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* @y_max: maximum y coordinate value
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* @btn_cnt: number of buttons
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* @sp_btn_cnt: number of stick buttons
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*/
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struct u1_dev {
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struct input_dev *input;
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struct input_dev *input2;
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struct hid_device *hdev;
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u8 dev_ctrl;
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u8 dev_type;
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u8 sen_line_num_x;
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u8 sen_line_num_y;
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u8 pitch_x;
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u8 pitch_y;
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u8 resolution;
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u8 btn_info;
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u8 sp_btn_info;
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u32 x_active_len_mm;
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u32 y_active_len_mm;
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u32 x_max;
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u32 y_max;
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u32 btn_cnt;
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u32 sp_btn_cnt;
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};
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static int u1_read_write_register(struct hid_device *hdev, u32 address,
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u8 *read_val, u8 write_val, bool read_flag)
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{
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int ret, i;
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u8 check_sum;
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u8 *input;
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u8 *readbuf;
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input = kzalloc(U1_FEATURE_REPORT_LEN, GFP_KERNEL);
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if (!input)
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return -ENOMEM;
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input[0] = U1_FEATURE_REPORT_ID;
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if (read_flag) {
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input[1] = U1_CMD_REGISTER_READ;
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input[6] = 0x00;
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} else {
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input[1] = U1_CMD_REGISTER_WRITE;
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input[6] = write_val;
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}
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put_unaligned_le32(address, input + 2);
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/* Calculate the checksum */
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check_sum = U1_FEATURE_REPORT_LEN_ALL;
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for (i = 0; i < U1_FEATURE_REPORT_LEN - 1; i++)
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check_sum += input[i];
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input[7] = check_sum;
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ret = hid_hw_raw_request(hdev, U1_FEATURE_REPORT_ID, input,
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U1_FEATURE_REPORT_LEN,
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HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
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if (ret < 0) {
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dev_err(&hdev->dev, "failed to read command (%d)\n", ret);
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goto exit;
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}
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if (read_flag) {
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readbuf = kzalloc(U1_FEATURE_REPORT_LEN, GFP_KERNEL);
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if (!readbuf) {
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ret = -ENOMEM;
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goto exit;
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}
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ret = hid_hw_raw_request(hdev, U1_FEATURE_REPORT_ID, readbuf,
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U1_FEATURE_REPORT_LEN,
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HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
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if (ret < 0) {
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dev_err(&hdev->dev, "failed read register (%d)\n", ret);
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kfree(readbuf);
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goto exit;
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}
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*read_val = readbuf[6];
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kfree(readbuf);
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}
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ret = 0;
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exit:
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kfree(input);
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return ret;
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}
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static int alps_raw_event(struct hid_device *hdev,
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struct hid_report *report, u8 *data, int size)
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{
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unsigned int x, y, z;
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int i;
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short sp_x, sp_y;
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struct u1_dev *hdata = hid_get_drvdata(hdev);
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switch (data[0]) {
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case U1_MOUSE_REPORT_ID:
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break;
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case U1_FEATURE_REPORT_ID:
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break;
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case U1_ABSOLUTE_REPORT_ID:
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for (i = 0; i < MAX_TOUCHES; i++) {
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u8 *contact = &data[i * 5];
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x = get_unaligned_le16(contact + 3);
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y = get_unaligned_le16(contact + 5);
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z = contact[7] & 0x7F;
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input_mt_slot(hdata->input, i);
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if (z != 0) {
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input_mt_report_slot_state(hdata->input,
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MT_TOOL_FINGER, 1);
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input_report_abs(hdata->input,
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ABS_MT_POSITION_X, x);
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input_report_abs(hdata->input,
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ABS_MT_POSITION_Y, y);
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input_report_abs(hdata->input,
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ABS_MT_PRESSURE, z);
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} else {
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input_mt_report_slot_state(hdata->input,
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MT_TOOL_FINGER, 0);
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}
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}
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input_mt_sync_frame(hdata->input);
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input_report_key(hdata->input, BTN_LEFT,
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data[1] & 0x1);
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input_report_key(hdata->input, BTN_RIGHT,
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(data[1] & 0x2));
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input_report_key(hdata->input, BTN_MIDDLE,
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(data[1] & 0x4));
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input_sync(hdata->input);
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return 1;
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case U1_SP_ABSOLUTE_REPORT_ID:
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sp_x = get_unaligned_le16(data+2);
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sp_y = get_unaligned_le16(data+4);
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sp_x = sp_x / 8;
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sp_y = sp_y / 8;
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input_report_rel(hdata->input2, REL_X, sp_x);
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input_report_rel(hdata->input2, REL_Y, sp_y);
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input_report_key(hdata->input2, BTN_LEFT,
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data[1] & 0x1);
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input_report_key(hdata->input2, BTN_RIGHT,
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(data[1] & 0x2));
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input_report_key(hdata->input2, BTN_MIDDLE,
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(data[1] & 0x4));
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input_sync(hdata->input2);
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return 1;
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}
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return 0;
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}
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#ifdef CONFIG_PM
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static int alps_post_reset(struct hid_device *hdev)
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{
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return u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
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NULL, U1_TP_ABS_MODE | U1_SP_ABS_MODE, false);
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}
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static int alps_post_resume(struct hid_device *hdev)
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{
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return u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
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NULL, U1_TP_ABS_MODE | U1_SP_ABS_MODE, false);
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}
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#endif /* CONFIG_PM */
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static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi)
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{
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struct u1_dev *data = hid_get_drvdata(hdev);
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struct input_dev *input = hi->input, *input2;
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struct u1_dev devInfo;
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int ret;
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int res_x, res_y, i;
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data->input = input;
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hid_dbg(hdev, "Opening low level driver\n");
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ret = hid_hw_open(hdev);
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if (ret)
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return ret;
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/* Allow incoming hid reports */
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hid_device_io_start(hdev);
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/* Device initialization */
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ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
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&devInfo.dev_ctrl, 0, true);
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if (ret < 0) {
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dev_err(&hdev->dev, "failed U1_DEV_CTRL_1 (%d)\n", ret);
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goto exit;
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}
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devInfo.dev_ctrl &= ~U1_DISABLE_DEV;
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devInfo.dev_ctrl |= U1_TP_ABS_MODE;
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ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
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NULL, devInfo.dev_ctrl, false);
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if (ret < 0) {
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dev_err(&hdev->dev, "failed to change TP mode (%d)\n", ret);
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goto exit;
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}
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ret = u1_read_write_register(hdev, ADDRESS_U1_NUM_SENS_X,
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&devInfo.sen_line_num_x, 0, true);
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if (ret < 0) {
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dev_err(&hdev->dev, "failed U1_NUM_SENS_X (%d)\n", ret);
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goto exit;
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}
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ret = u1_read_write_register(hdev, ADDRESS_U1_NUM_SENS_Y,
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&devInfo.sen_line_num_y, 0, true);
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if (ret < 0) {
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dev_err(&hdev->dev, "failed U1_NUM_SENS_Y (%d)\n", ret);
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goto exit;
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}
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ret = u1_read_write_register(hdev, ADDRESS_U1_PITCH_SENS_X,
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&devInfo.pitch_x, 0, true);
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if (ret < 0) {
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dev_err(&hdev->dev, "failed U1_PITCH_SENS_X (%d)\n", ret);
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goto exit;
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}
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ret = u1_read_write_register(hdev, ADDRESS_U1_PITCH_SENS_Y,
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&devInfo.pitch_y, 0, true);
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if (ret < 0) {
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dev_err(&hdev->dev, "failed U1_PITCH_SENS_Y (%d)\n", ret);
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goto exit;
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}
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ret = u1_read_write_register(hdev, ADDRESS_U1_RESO_DWN_ABS,
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&devInfo.resolution, 0, true);
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if (ret < 0) {
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dev_err(&hdev->dev, "failed U1_RESO_DWN_ABS (%d)\n", ret);
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goto exit;
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}
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ret = u1_read_write_register(hdev, ADDRESS_U1_PAD_BTN,
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&devInfo.btn_info, 0, true);
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if (ret < 0) {
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dev_err(&hdev->dev, "failed U1_PAD_BTN (%d)\n", ret);
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goto exit;
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}
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/* Check StickPointer device */
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ret = u1_read_write_register(hdev, ADDRESS_U1_DEVICE_TYP,
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&devInfo.dev_type, 0, true);
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if (ret < 0) {
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dev_err(&hdev->dev, "failed U1_DEVICE_TYP (%d)\n", ret);
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goto exit;
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}
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devInfo.x_active_len_mm =
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(devInfo.pitch_x * (devInfo.sen_line_num_x - 1)) / 10;
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devInfo.y_active_len_mm =
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(devInfo.pitch_y * (devInfo.sen_line_num_y - 1)) / 10;
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devInfo.x_max =
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(devInfo.resolution << 2) * (devInfo.sen_line_num_x - 1);
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devInfo.y_max =
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(devInfo.resolution << 2) * (devInfo.sen_line_num_y - 1);
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__set_bit(EV_ABS, input->evbit);
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input_set_abs_params(input, ABS_MT_POSITION_X, 1, devInfo.x_max, 0, 0);
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input_set_abs_params(input, ABS_MT_POSITION_Y, 1, devInfo.y_max, 0, 0);
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if (devInfo.x_active_len_mm && devInfo.y_active_len_mm) {
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res_x = (devInfo.x_max - 1) / devInfo.x_active_len_mm;
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res_y = (devInfo.y_max - 1) / devInfo.y_active_len_mm;
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input_abs_set_res(input, ABS_MT_POSITION_X, res_x);
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input_abs_set_res(input, ABS_MT_POSITION_Y, res_y);
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}
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input_set_abs_params(input, ABS_MT_PRESSURE, 0, 64, 0, 0);
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input_mt_init_slots(input, MAX_TOUCHES, INPUT_MT_POINTER);
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__set_bit(EV_KEY, input->evbit);
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if ((devInfo.btn_info & 0x0F) == (devInfo.btn_info & 0xF0) >> 4) {
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devInfo.btn_cnt = (devInfo.btn_info & 0x0F);
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} else {
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/* Button pad */
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devInfo.btn_cnt = 1;
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__set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
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}
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for (i = 0; i < devInfo.btn_cnt; i++)
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__set_bit(BTN_LEFT + i, input->keybit);
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/* Stick device initialization */
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if (devInfo.dev_type & U1_DEVTYPE_SP_SUPPORT) {
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input2 = input_allocate_device();
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if (!input2) {
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ret = -ENOMEM;
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goto exit;
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}
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data->input2 = input2;
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devInfo.dev_ctrl |= U1_SP_ABS_MODE;
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ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
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NULL, devInfo.dev_ctrl, false);
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if (ret < 0) {
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dev_err(&hdev->dev, "failed SP mode (%d)\n", ret);
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input_free_device(input2);
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goto exit;
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}
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ret = u1_read_write_register(hdev, ADDRESS_U1_SP_BTN,
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&devInfo.sp_btn_info, 0, true);
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if (ret < 0) {
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dev_err(&hdev->dev, "failed U1_SP_BTN (%d)\n", ret);
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input_free_device(input2);
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goto exit;
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}
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input2->phys = input->phys;
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input2->name = "DualPoint Stick";
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input2->id.bustype = BUS_I2C;
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input2->id.vendor = input->id.vendor;
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input2->id.product = input->id.product;
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input2->id.version = input->id.version;
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input2->dev.parent = input->dev.parent;
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__set_bit(EV_KEY, input2->evbit);
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devInfo.sp_btn_cnt = (devInfo.sp_btn_info & 0x0F);
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for (i = 0; i < devInfo.sp_btn_cnt; i++)
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__set_bit(BTN_LEFT + i, input2->keybit);
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__set_bit(EV_REL, input2->evbit);
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__set_bit(REL_X, input2->relbit);
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__set_bit(REL_Y, input2->relbit);
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__set_bit(INPUT_PROP_POINTER, input2->propbit);
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__set_bit(INPUT_PROP_POINTING_STICK, input2->propbit);
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ret = input_register_device(data->input2);
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if (ret) {
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input_free_device(input2);
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goto exit;
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}
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}
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exit:
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hid_device_io_stop(hdev);
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hid_hw_close(hdev);
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return ret;
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}
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static int alps_input_mapping(struct hid_device *hdev,
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struct hid_input *hi, struct hid_field *field,
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struct hid_usage *usage, unsigned long **bit, int *max)
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{
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return -1;
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}
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static int alps_probe(struct hid_device *hdev, const struct hid_device_id *id)
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{
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struct u1_dev *data = NULL;
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int ret;
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data = devm_kzalloc(&hdev->dev, sizeof(struct u1_dev), GFP_KERNEL);
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if (!data)
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return -ENOMEM;
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data->hdev = hdev;
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hid_set_drvdata(hdev, data);
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hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
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ret = hid_parse(hdev);
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if (ret) {
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hid_err(hdev, "parse failed\n");
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return ret;
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}
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ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
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if (ret) {
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|
hid_err(hdev, "hw start failed\n");
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void alps_remove(struct hid_device *hdev)
|
|
{
|
|
hid_hw_stop(hdev);
|
|
}
|
|
|
|
static const struct hid_device_id alps_id[] = {
|
|
{ HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY,
|
|
USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1_DUAL) },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(hid, alps_id);
|
|
|
|
static struct hid_driver alps_driver = {
|
|
.name = "hid-alps",
|
|
.id_table = alps_id,
|
|
.probe = alps_probe,
|
|
.remove = alps_remove,
|
|
.raw_event = alps_raw_event,
|
|
.input_mapping = alps_input_mapping,
|
|
.input_configured = alps_input_configured,
|
|
#ifdef CONFIG_PM
|
|
.resume = alps_post_resume,
|
|
.reset_resume = alps_post_reset,
|
|
#endif
|
|
};
|
|
|
|
module_hid_driver(alps_driver);
|
|
|
|
MODULE_AUTHOR("Masaki Ota <masaki.ota@jp.alps.com>");
|
|
MODULE_DESCRIPTION("ALPS HID driver");
|
|
MODULE_LICENSE("GPL");
|