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- // SPDX-License-Identifier: GPL-2.0-or-later
- /*
- * Copyright (c) 2016 Masaki Ota <[email protected]>
- */
- #include <linux/kernel.h>
- #include <linux/hid.h>
- #include <linux/input.h>
- #include <linux/input/mt.h>
- #include <linux/module.h>
- #include <asm/unaligned.h>
- #include "hid-ids.h"
- /* ALPS Device Product ID */
- #define HID_PRODUCT_ID_T3_BTNLESS 0xD0C0
- #define HID_PRODUCT_ID_COSMO 0x1202
- #define HID_PRODUCT_ID_U1_PTP_1 0x1207
- #define HID_PRODUCT_ID_U1 0x1209
- #define HID_PRODUCT_ID_U1_PTP_2 0x120A
- #define HID_PRODUCT_ID_U1_DUAL 0x120B
- #define HID_PRODUCT_ID_T4_BTNLESS 0x120C
- #define DEV_SINGLEPOINT 0x01
- #define DEV_DUALPOINT 0x02
- #define U1_MOUSE_REPORT_ID 0x01 /* Mouse data ReportID */
- #define U1_ABSOLUTE_REPORT_ID 0x03 /* Absolute data ReportID */
- #define U1_ABSOLUTE_REPORT_ID_SECD 0x02 /* FW-PTP Absolute data ReportID */
- #define U1_FEATURE_REPORT_ID 0x05 /* Feature ReportID */
- #define U1_SP_ABSOLUTE_REPORT_ID 0x06 /* Feature ReportID */
- #define U1_FEATURE_REPORT_LEN 0x08 /* Feature Report Length */
- #define U1_FEATURE_REPORT_LEN_ALL 0x0A
- #define U1_CMD_REGISTER_READ 0xD1
- #define U1_CMD_REGISTER_WRITE 0xD2
- #define U1_DEVTYPE_SP_SUPPORT 0x10 /* SP Support */
- #define U1_DISABLE_DEV 0x01
- #define U1_TP_ABS_MODE 0x02
- #define U1_SP_ABS_MODE 0x80
- #define ADDRESS_U1_DEV_CTRL_1 0x00800040
- #define ADDRESS_U1_DEVICE_TYP 0x00800043
- #define ADDRESS_U1_NUM_SENS_X 0x00800047
- #define ADDRESS_U1_NUM_SENS_Y 0x00800048
- #define ADDRESS_U1_PITCH_SENS_X 0x00800049
- #define ADDRESS_U1_PITCH_SENS_Y 0x0080004A
- #define ADDRESS_U1_RESO_DWN_ABS 0x0080004E
- #define ADDRESS_U1_PAD_BTN 0x00800052
- #define ADDRESS_U1_SP_BTN 0x0080009F
- #define T4_INPUT_REPORT_LEN sizeof(struct t4_input_report)
- #define T4_FEATURE_REPORT_LEN T4_INPUT_REPORT_LEN
- #define T4_FEATURE_REPORT_ID 7
- #define T4_CMD_REGISTER_READ 0x08
- #define T4_CMD_REGISTER_WRITE 0x07
- #define T4_ADDRESS_BASE 0xC2C0
- #define PRM_SYS_CONFIG_1 (T4_ADDRESS_BASE + 0x0002)
- #define T4_PRM_FEED_CONFIG_1 (T4_ADDRESS_BASE + 0x0004)
- #define T4_PRM_FEED_CONFIG_4 (T4_ADDRESS_BASE + 0x001A)
- #define T4_PRM_ID_CONFIG_3 (T4_ADDRESS_BASE + 0x00B0)
- #define T4_FEEDCFG4_ADVANCED_ABS_ENABLE 0x01
- #define T4_I2C_ABS 0x78
- #define T4_COUNT_PER_ELECTRODE 256
- #define MAX_TOUCHES 5
- enum dev_num {
- U1,
- T4,
- UNKNOWN,
- };
- /**
- * struct alps_dev
- *
- * @input: pointer to the kernel input device
- * @input2: pointer to the kernel input2 device
- * @hdev: pointer to the struct hid_device
- *
- * @dev_type: device type
- * @max_fingers: total number of fingers
- * @has_sp: boolean of sp existense
- * @sp_btn_info: button information
- * @x_active_len_mm: active area length of X (mm)
- * @y_active_len_mm: active area length of Y (mm)
- * @x_max: maximum x coordinate value
- * @y_max: maximum y coordinate value
- * @x_min: minimum x coordinate value
- * @y_min: minimum y coordinate value
- * @btn_cnt: number of buttons
- * @sp_btn_cnt: number of stick buttons
- */
- struct alps_dev {
- struct input_dev *input;
- struct input_dev *input2;
- struct hid_device *hdev;
- enum dev_num dev_type;
- u8 max_fingers;
- u8 has_sp;
- u8 sp_btn_info;
- u32 x_active_len_mm;
- u32 y_active_len_mm;
- u32 x_max;
- u32 y_max;
- u32 x_min;
- u32 y_min;
- u32 btn_cnt;
- u32 sp_btn_cnt;
- };
- struct t4_contact_data {
- u8 palm;
- u8 x_lo;
- u8 x_hi;
- u8 y_lo;
- u8 y_hi;
- };
- struct t4_input_report {
- u8 reportID;
- u8 numContacts;
- struct t4_contact_data contact[5];
- u8 button;
- u8 track[5];
- u8 zx[5], zy[5];
- u8 palmTime[5];
- u8 kilroy;
- u16 timeStamp;
- };
- static u16 t4_calc_check_sum(u8 *buffer,
- unsigned long offset, unsigned long length)
- {
- u16 sum1 = 0xFF, sum2 = 0xFF;
- unsigned long i = 0;
- if (offset + length >= 50)
- return 0;
- while (length > 0) {
- u32 tlen = length > 20 ? 20 : length;
- length -= tlen;
- do {
- sum1 += buffer[offset + i];
- sum2 += sum1;
- i++;
- } while (--tlen > 0);
- sum1 = (sum1 & 0xFF) + (sum1 >> 8);
- sum2 = (sum2 & 0xFF) + (sum2 >> 8);
- }
- sum1 = (sum1 & 0xFF) + (sum1 >> 8);
- sum2 = (sum2 & 0xFF) + (sum2 >> 8);
- return(sum2 << 8 | sum1);
- }
- static int t4_read_write_register(struct hid_device *hdev, u32 address,
- u8 *read_val, u8 write_val, bool read_flag)
- {
- int ret;
- u16 check_sum;
- u8 *input;
- u8 *readbuf = NULL;
- input = kzalloc(T4_FEATURE_REPORT_LEN, GFP_KERNEL);
- if (!input)
- return -ENOMEM;
- input[0] = T4_FEATURE_REPORT_ID;
- if (read_flag) {
- input[1] = T4_CMD_REGISTER_READ;
- input[8] = 0x00;
- } else {
- input[1] = T4_CMD_REGISTER_WRITE;
- input[8] = write_val;
- }
- put_unaligned_le32(address, input + 2);
- input[6] = 1;
- input[7] = 0;
- /* Calculate the checksum */
- check_sum = t4_calc_check_sum(input, 1, 8);
- input[9] = (u8)check_sum;
- input[10] = (u8)(check_sum >> 8);
- input[11] = 0;
- ret = hid_hw_raw_request(hdev, T4_FEATURE_REPORT_ID, input,
- T4_FEATURE_REPORT_LEN,
- HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed to read command (%d)\n", ret);
- goto exit;
- }
- if (read_flag) {
- readbuf = kzalloc(T4_FEATURE_REPORT_LEN, GFP_KERNEL);
- if (!readbuf) {
- ret = -ENOMEM;
- goto exit;
- }
- ret = hid_hw_raw_request(hdev, T4_FEATURE_REPORT_ID, readbuf,
- T4_FEATURE_REPORT_LEN,
- HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed read register (%d)\n", ret);
- goto exit_readbuf;
- }
- ret = -EINVAL;
- if (*(u32 *)&readbuf[6] != address) {
- dev_err(&hdev->dev, "read register address error (%x,%x)\n",
- *(u32 *)&readbuf[6], address);
- goto exit_readbuf;
- }
- if (*(u16 *)&readbuf[10] != 1) {
- dev_err(&hdev->dev, "read register size error (%x)\n",
- *(u16 *)&readbuf[10]);
- goto exit_readbuf;
- }
- check_sum = t4_calc_check_sum(readbuf, 6, 7);
- if (*(u16 *)&readbuf[13] != check_sum) {
- dev_err(&hdev->dev, "read register checksum error (%x,%x)\n",
- *(u16 *)&readbuf[13], check_sum);
- goto exit_readbuf;
- }
- *read_val = readbuf[12];
- }
- ret = 0;
- exit_readbuf:
- kfree(readbuf);
- exit:
- kfree(input);
- return ret;
- }
- static int u1_read_write_register(struct hid_device *hdev, u32 address,
- u8 *read_val, u8 write_val, bool read_flag)
- {
- int ret, i;
- u8 check_sum;
- u8 *input;
- u8 *readbuf;
- input = kzalloc(U1_FEATURE_REPORT_LEN, GFP_KERNEL);
- if (!input)
- return -ENOMEM;
- input[0] = U1_FEATURE_REPORT_ID;
- if (read_flag) {
- input[1] = U1_CMD_REGISTER_READ;
- input[6] = 0x00;
- } else {
- input[1] = U1_CMD_REGISTER_WRITE;
- input[6] = write_val;
- }
- put_unaligned_le32(address, input + 2);
- /* Calculate the checksum */
- check_sum = U1_FEATURE_REPORT_LEN_ALL;
- for (i = 0; i < U1_FEATURE_REPORT_LEN - 1; i++)
- check_sum += input[i];
- input[7] = check_sum;
- ret = hid_hw_raw_request(hdev, U1_FEATURE_REPORT_ID, input,
- U1_FEATURE_REPORT_LEN,
- HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed to read command (%d)\n", ret);
- goto exit;
- }
- if (read_flag) {
- readbuf = kzalloc(U1_FEATURE_REPORT_LEN, GFP_KERNEL);
- if (!readbuf) {
- ret = -ENOMEM;
- goto exit;
- }
- ret = hid_hw_raw_request(hdev, U1_FEATURE_REPORT_ID, readbuf,
- U1_FEATURE_REPORT_LEN,
- HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed read register (%d)\n", ret);
- kfree(readbuf);
- goto exit;
- }
- *read_val = readbuf[6];
- kfree(readbuf);
- }
- ret = 0;
- exit:
- kfree(input);
- return ret;
- }
- static int t4_raw_event(struct alps_dev *hdata, u8 *data, int size)
- {
- unsigned int x, y, z;
- int i;
- struct t4_input_report *p_report = (struct t4_input_report *)data;
- if (!data)
- return 0;
- for (i = 0; i < hdata->max_fingers; i++) {
- x = p_report->contact[i].x_hi << 8 | p_report->contact[i].x_lo;
- y = p_report->contact[i].y_hi << 8 | p_report->contact[i].y_lo;
- y = hdata->y_max - y + hdata->y_min;
- z = (p_report->contact[i].palm < 0x80 &&
- p_report->contact[i].palm > 0) * 62;
- if (x == 0xffff) {
- x = 0;
- y = 0;
- z = 0;
- }
- input_mt_slot(hdata->input, i);
- input_mt_report_slot_state(hdata->input,
- MT_TOOL_FINGER, z != 0);
- if (!z)
- continue;
- input_report_abs(hdata->input, ABS_MT_POSITION_X, x);
- input_report_abs(hdata->input, ABS_MT_POSITION_Y, y);
- input_report_abs(hdata->input, ABS_MT_PRESSURE, z);
- }
- input_mt_sync_frame(hdata->input);
- input_report_key(hdata->input, BTN_LEFT, p_report->button);
- input_sync(hdata->input);
- return 1;
- }
- static int u1_raw_event(struct alps_dev *hdata, u8 *data, int size)
- {
- unsigned int x, y, z;
- int i;
- short sp_x, sp_y;
- if (!data)
- return 0;
- switch (data[0]) {
- case U1_MOUSE_REPORT_ID:
- break;
- case U1_FEATURE_REPORT_ID:
- break;
- case U1_ABSOLUTE_REPORT_ID:
- case U1_ABSOLUTE_REPORT_ID_SECD:
- for (i = 0; i < hdata->max_fingers; i++) {
- u8 *contact = &data[i * 5];
- x = get_unaligned_le16(contact + 3);
- y = get_unaligned_le16(contact + 5);
- z = contact[7] & 0x7F;
- input_mt_slot(hdata->input, i);
- if (z != 0) {
- input_mt_report_slot_state(hdata->input,
- MT_TOOL_FINGER, 1);
- input_report_abs(hdata->input,
- ABS_MT_POSITION_X, x);
- input_report_abs(hdata->input,
- ABS_MT_POSITION_Y, y);
- input_report_abs(hdata->input,
- ABS_MT_PRESSURE, z);
- } else {
- input_mt_report_slot_inactive(hdata->input);
- }
- }
- input_mt_sync_frame(hdata->input);
- input_report_key(hdata->input, BTN_LEFT,
- data[1] & 0x1);
- input_report_key(hdata->input, BTN_RIGHT,
- (data[1] & 0x2));
- input_report_key(hdata->input, BTN_MIDDLE,
- (data[1] & 0x4));
- input_sync(hdata->input);
- return 1;
- case U1_SP_ABSOLUTE_REPORT_ID:
- sp_x = get_unaligned_le16(data+2);
- sp_y = get_unaligned_le16(data+4);
- sp_x = sp_x / 8;
- sp_y = sp_y / 8;
- input_report_rel(hdata->input2, REL_X, sp_x);
- input_report_rel(hdata->input2, REL_Y, sp_y);
- input_report_key(hdata->input2, BTN_LEFT,
- data[1] & 0x1);
- input_report_key(hdata->input2, BTN_RIGHT,
- (data[1] & 0x2));
- input_report_key(hdata->input2, BTN_MIDDLE,
- (data[1] & 0x4));
- input_sync(hdata->input2);
- return 1;
- }
- return 0;
- }
- static int alps_raw_event(struct hid_device *hdev,
- struct hid_report *report, u8 *data, int size)
- {
- int ret = 0;
- struct alps_dev *hdata = hid_get_drvdata(hdev);
- switch (hdev->product) {
- case HID_PRODUCT_ID_T4_BTNLESS:
- ret = t4_raw_event(hdata, data, size);
- break;
- default:
- ret = u1_raw_event(hdata, data, size);
- break;
- }
- return ret;
- }
- static int __maybe_unused alps_post_reset(struct hid_device *hdev)
- {
- int ret = -1;
- struct alps_dev *data = hid_get_drvdata(hdev);
- switch (data->dev_type) {
- case T4:
- ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_1,
- NULL, T4_I2C_ABS, false);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_1 (%d)\n",
- ret);
- goto exit;
- }
- ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_4,
- NULL, T4_FEEDCFG4_ADVANCED_ABS_ENABLE, false);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_4 (%d)\n",
- ret);
- goto exit;
- }
- break;
- case U1:
- ret = u1_read_write_register(hdev,
- ADDRESS_U1_DEV_CTRL_1, NULL,
- U1_TP_ABS_MODE | U1_SP_ABS_MODE, false);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed to change TP mode (%d)\n",
- ret);
- goto exit;
- }
- break;
- default:
- break;
- }
- exit:
- return ret;
- }
- static int __maybe_unused alps_post_resume(struct hid_device *hdev)
- {
- return alps_post_reset(hdev);
- }
- static int u1_init(struct hid_device *hdev, struct alps_dev *pri_data)
- {
- int ret;
- u8 tmp, dev_ctrl, sen_line_num_x, sen_line_num_y;
- u8 pitch_x, pitch_y, resolution;
- /* Device initialization */
- ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
- &dev_ctrl, 0, true);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed U1_DEV_CTRL_1 (%d)\n", ret);
- goto exit;
- }
- dev_ctrl &= ~U1_DISABLE_DEV;
- dev_ctrl |= U1_TP_ABS_MODE;
- ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
- NULL, dev_ctrl, false);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed to change TP mode (%d)\n", ret);
- goto exit;
- }
- ret = u1_read_write_register(hdev, ADDRESS_U1_NUM_SENS_X,
- &sen_line_num_x, 0, true);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed U1_NUM_SENS_X (%d)\n", ret);
- goto exit;
- }
- ret = u1_read_write_register(hdev, ADDRESS_U1_NUM_SENS_Y,
- &sen_line_num_y, 0, true);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed U1_NUM_SENS_Y (%d)\n", ret);
- goto exit;
- }
- ret = u1_read_write_register(hdev, ADDRESS_U1_PITCH_SENS_X,
- &pitch_x, 0, true);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed U1_PITCH_SENS_X (%d)\n", ret);
- goto exit;
- }
- ret = u1_read_write_register(hdev, ADDRESS_U1_PITCH_SENS_Y,
- &pitch_y, 0, true);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed U1_PITCH_SENS_Y (%d)\n", ret);
- goto exit;
- }
- ret = u1_read_write_register(hdev, ADDRESS_U1_RESO_DWN_ABS,
- &resolution, 0, true);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed U1_RESO_DWN_ABS (%d)\n", ret);
- goto exit;
- }
- pri_data->x_active_len_mm =
- (pitch_x * (sen_line_num_x - 1)) / 10;
- pri_data->y_active_len_mm =
- (pitch_y * (sen_line_num_y - 1)) / 10;
- pri_data->x_max =
- (resolution << 2) * (sen_line_num_x - 1);
- pri_data->x_min = 1;
- pri_data->y_max =
- (resolution << 2) * (sen_line_num_y - 1);
- pri_data->y_min = 1;
- ret = u1_read_write_register(hdev, ADDRESS_U1_PAD_BTN,
- &tmp, 0, true);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed U1_PAD_BTN (%d)\n", ret);
- goto exit;
- }
- if ((tmp & 0x0F) == (tmp & 0xF0) >> 4) {
- pri_data->btn_cnt = (tmp & 0x0F);
- } else {
- /* Button pad */
- pri_data->btn_cnt = 1;
- }
- pri_data->has_sp = 0;
- /* Check StickPointer device */
- ret = u1_read_write_register(hdev, ADDRESS_U1_DEVICE_TYP,
- &tmp, 0, true);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed U1_DEVICE_TYP (%d)\n", ret);
- goto exit;
- }
- if (tmp & U1_DEVTYPE_SP_SUPPORT) {
- dev_ctrl |= U1_SP_ABS_MODE;
- ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
- NULL, dev_ctrl, false);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed SP mode (%d)\n", ret);
- goto exit;
- }
- ret = u1_read_write_register(hdev, ADDRESS_U1_SP_BTN,
- &pri_data->sp_btn_info, 0, true);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed U1_SP_BTN (%d)\n", ret);
- goto exit;
- }
- pri_data->has_sp = 1;
- }
- pri_data->max_fingers = 5;
- exit:
- return ret;
- }
- static int T4_init(struct hid_device *hdev, struct alps_dev *pri_data)
- {
- int ret;
- u8 tmp, sen_line_num_x, sen_line_num_y;
- ret = t4_read_write_register(hdev, T4_PRM_ID_CONFIG_3, &tmp, 0, true);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed T4_PRM_ID_CONFIG_3 (%d)\n", ret);
- goto exit;
- }
- sen_line_num_x = 16 + ((tmp & 0x0F) | (tmp & 0x08 ? 0xF0 : 0));
- sen_line_num_y = 12 + (((tmp & 0xF0) >> 4) | (tmp & 0x80 ? 0xF0 : 0));
- pri_data->x_max = sen_line_num_x * T4_COUNT_PER_ELECTRODE;
- pri_data->x_min = T4_COUNT_PER_ELECTRODE;
- pri_data->y_max = sen_line_num_y * T4_COUNT_PER_ELECTRODE;
- pri_data->y_min = T4_COUNT_PER_ELECTRODE;
- pri_data->x_active_len_mm = pri_data->y_active_len_mm = 0;
- pri_data->btn_cnt = 1;
- ret = t4_read_write_register(hdev, PRM_SYS_CONFIG_1, &tmp, 0, true);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed PRM_SYS_CONFIG_1 (%d)\n", ret);
- goto exit;
- }
- tmp |= 0x02;
- ret = t4_read_write_register(hdev, PRM_SYS_CONFIG_1, NULL, tmp, false);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed PRM_SYS_CONFIG_1 (%d)\n", ret);
- goto exit;
- }
- ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_1,
- NULL, T4_I2C_ABS, false);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_1 (%d)\n", ret);
- goto exit;
- }
- ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_4, NULL,
- T4_FEEDCFG4_ADVANCED_ABS_ENABLE, false);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_4 (%d)\n", ret);
- goto exit;
- }
- pri_data->max_fingers = 5;
- pri_data->has_sp = 0;
- exit:
- return ret;
- }
- static int alps_sp_open(struct input_dev *dev)
- {
- struct hid_device *hid = input_get_drvdata(dev);
- return hid_hw_open(hid);
- }
- static void alps_sp_close(struct input_dev *dev)
- {
- struct hid_device *hid = input_get_drvdata(dev);
- hid_hw_close(hid);
- }
- static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi)
- {
- struct alps_dev *data = hid_get_drvdata(hdev);
- struct input_dev *input = hi->input, *input2;
- int ret;
- int res_x, res_y, i;
- data->input = input;
- hid_dbg(hdev, "Opening low level driver\n");
- ret = hid_hw_open(hdev);
- if (ret)
- return ret;
- /* Allow incoming hid reports */
- hid_device_io_start(hdev);
- switch (data->dev_type) {
- case T4:
- ret = T4_init(hdev, data);
- break;
- case U1:
- ret = u1_init(hdev, data);
- break;
- default:
- break;
- }
- if (ret)
- goto exit;
- __set_bit(EV_ABS, input->evbit);
- input_set_abs_params(input, ABS_MT_POSITION_X,
- data->x_min, data->x_max, 0, 0);
- input_set_abs_params(input, ABS_MT_POSITION_Y,
- data->y_min, data->y_max, 0, 0);
- if (data->x_active_len_mm && data->y_active_len_mm) {
- res_x = (data->x_max - 1) / data->x_active_len_mm;
- res_y = (data->y_max - 1) / data->y_active_len_mm;
- input_abs_set_res(input, ABS_MT_POSITION_X, res_x);
- input_abs_set_res(input, ABS_MT_POSITION_Y, res_y);
- }
- input_set_abs_params(input, ABS_MT_PRESSURE, 0, 64, 0, 0);
- input_mt_init_slots(input, data->max_fingers, INPUT_MT_POINTER);
- __set_bit(EV_KEY, input->evbit);
- if (data->btn_cnt == 1)
- __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
- for (i = 0; i < data->btn_cnt; i++)
- __set_bit(BTN_LEFT + i, input->keybit);
- /* Stick device initialization */
- if (data->has_sp) {
- input2 = input_allocate_device();
- if (!input2) {
- ret = -ENOMEM;
- goto exit;
- }
- data->input2 = input2;
- input2->phys = input->phys;
- input2->name = "DualPoint Stick";
- input2->id.bustype = BUS_I2C;
- input2->id.vendor = input->id.vendor;
- input2->id.product = input->id.product;
- input2->id.version = input->id.version;
- input2->dev.parent = input->dev.parent;
- input_set_drvdata(input2, hdev);
- input2->open = alps_sp_open;
- input2->close = alps_sp_close;
- __set_bit(EV_KEY, input2->evbit);
- data->sp_btn_cnt = (data->sp_btn_info & 0x0F);
- for (i = 0; i < data->sp_btn_cnt; i++)
- __set_bit(BTN_LEFT + i, input2->keybit);
- __set_bit(EV_REL, input2->evbit);
- __set_bit(REL_X, input2->relbit);
- __set_bit(REL_Y, input2->relbit);
- __set_bit(INPUT_PROP_POINTER, input2->propbit);
- __set_bit(INPUT_PROP_POINTING_STICK, input2->propbit);
- if (input_register_device(data->input2)) {
- input_free_device(input2);
- ret = -ENOENT;
- goto exit;
- }
- }
- exit:
- hid_device_io_stop(hdev);
- hid_hw_close(hdev);
- return ret;
- }
- static int alps_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 int alps_probe(struct hid_device *hdev, const struct hid_device_id *id)
- {
- struct alps_dev *data = NULL;
- int ret;
- data = devm_kzalloc(&hdev->dev, sizeof(struct alps_dev), GFP_KERNEL);
- if (!data)
- return -ENOMEM;
- data->hdev = hdev;
- hid_set_drvdata(hdev, data);
- hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
- ret = hid_parse(hdev);
- if (ret) {
- hid_err(hdev, "parse failed\n");
- return ret;
- }
- switch (hdev->product) {
- case HID_DEVICE_ID_ALPS_T4_BTNLESS:
- data->dev_type = T4;
- break;
- case HID_DEVICE_ID_ALPS_U1_DUAL:
- case HID_DEVICE_ID_ALPS_U1:
- case HID_DEVICE_ID_ALPS_U1_UNICORN_LEGACY:
- data->dev_type = U1;
- break;
- default:
- data->dev_type = UNKNOWN;
- }
- ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
- if (ret) {
- 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) },
- { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY,
- USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1) },
- { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY,
- USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1_UNICORN_LEGACY) },
- { HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY,
- USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_T4_BTNLESS) },
- { }
- };
- 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 <[email protected]>");
- MODULE_DESCRIPTION("ALPS HID driver");
- MODULE_LICENSE("GPL");
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