--- /dev/null
+/*
+ * Copyright (c) 2016 Masaki Ota <masaki.ota@jp.alps.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; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+#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_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(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
+
+typedef enum {
+ U1,
+ T4,
+ UNKNOWN,
+} DEV_TYPE;
+/**
+ * struct u1_data
+ *
+ * @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;
+
+ DEV_TYPE 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;
+};
+
+typedef struct _T4_CONTACT_DATA {
+ u8 Palm;
+ u8 x_lo;
+ u8 x_hi;
+ u8 y_lo;
+ u8 y_hi;
+} T4_CONTACT_DATA, *PT4_CONTACT_DATA;
+
+typedef struct _T4_INPUT_REPORT {
+ u8 ReportID;
+ u8 NumContacts;
+ T4_CONTACT_DATA Contact[5];
+ u8 Button;
+ u8 Track[5];
+ u8 ZX[5], ZY[5];
+ u8 PalmTime[5];
+ u8 Kilroy;
+ u16 TimeStamp;
+} T4_INPUT_REPORT, *PT4_INPUT_REPORT;
+
+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;
+
+ 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 amd append 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) {
+ kfree(input);
+ return -ENOMEM;
+ }
+
+ 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;
+ }
+ if (*(u32 *)&readbuf[6] != address)
+ hid_alert(hdev, "T4_read_write_register address error %x %x\n", *(u32 *)&readbuf[6], address);
+ if (*(u16 *)&readbuf[10] != 1)
+ hid_alert(hdev, "T4_read_write_register size error %x\n", *(u16 *)&readbuf[10]);
+ check_sum = t4_calc_check_sum(readbuf, 6, 7);
+ if (*(u16 *)&readbuf[13] != check_sum)
+ hid_alert(hdev, "T4_read_write_register checksum error %x %x\n", *(u16 *)&readbuf[13], check_sum);
+ *read_val = readbuf[12];
+
+ kfree(readbuf);
+ }
+
+ ret = 0;
+
+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) {
+ kfree(input);
+ return -ENOMEM;
+ }
+
+ 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);
+ 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;
+ PT4_INPUT_REPORT p_report = (PT4_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);
+
+ if (z != 0) {
+ input_mt_report_slot_state(hdata->input, MT_TOOL_FINGER, 1);
+ } else {
+ input_mt_report_slot_state(hdata->input, MT_TOOL_FINGER, 0);
+ 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;
+ short sp_x, sp_y;
+ int i;
+
+ if (!data)
+ return 0;
+ switch (data[0]) {
+ case U1_MOUSE_REPORT_ID:
+ break;
+ case U1_FEATURE_REPORT_ID:
+ break;
+ case U1_ABSOLUTE_REPORT_ID:
+ 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_state(hdata->input,
+ MT_TOOL_FINGER, 0);
+ }
+ }
+
+ 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) >> 1);
+ input_report_key(hdata->input, BTN_MIDDLE,
+ (data[1] & 0x4) >> 2);
+
+ 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) >> 1);
+ input_report_key(hdata->input2, BTN_MIDDLE,
+ (data[1] & 0x4) >> 2);
+
+ 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);
+
+ if (hdev->product == HID_PRODUCT_ID_T4_BTNLESS)
+ ret = T4_raw_event(hdata, data, size);
+ else
+ ret = U1_raw_event(hdata, data, size);
+ return ret;
+}
+
+#ifdef CONFIG_PM
+static int 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);
+ ret = T4_read_write_register(hdev, T4_PRM_FEED_CONFIG_4,
+ NULL, T4_FEEDCFG4_ADVANCED_ABS_ENABLE, false);
+ break;
+ case U1:
+ ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
+ NULL, U1_TP_ABS_MODE | U1_SP_ABS_MODE, false);
+ break;
+ default:
+ break;
+ }
+ return ret;
+}
+
+static int alps_post_resume(struct hid_device *hdev)
+{
+ return alps_post_reset(hdev);
+}
+#endif /* CONFIG_PM */
+
+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, 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 = 0;
+ 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_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);
+ if (data->dev_type == T4)
+ ret = T4_init(hdev, data);
+ else
+ ret = u1_init(hdev, data);
+ 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) {
+ input_free_device(input2);
+ 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;
+
+ __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);
+ 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:
+ data->dev_type = U1;
+ break;
+ default:
+ data->dev_type = UNKNOWN;
+ break;
+ }
+ 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_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 <masaki.ota@jp.alps.com>");
+MODULE_DESCRIPTION("ALPS HID driver");
+MODULE_LICENSE("GPL");
projects / firefly-linux-kernel-4.4.55.git / commitdiff