HID: alps: add support for Alps T4 Touchpad device
- Define T4 device specification value for support T4 device. - Creeate "t4_contact_data" and "t4_input_report" structure for decoding and storing T4-specific data - Create "t4_calc_check_sum()" function for calculating checksum value to send to the device. T4 needs to send this value when reading or writing device address value. - Create "t4_read_write_register()" function for reading and writing device address value. - Create "t4_raw_event()" function for decodin XYZ, palm and button data. - Replace "MAX_TOUCHES" fixed variable to "max_fingers" variable. - Add T4 devuce product ID. (0x120C) T4 device is used on HP EliteBook 1000 series and Zbook Stduio [jkosina@suse.cz: rewrite changelog] Signed-off-by: Masaki Ota <masaki.ota@jp.alps.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>hifive-unleashed-5.1
Masaki Ota
Jiri Kosina
parent
5992262d59
commit
73196ebe13
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@ -52,8 +52,30 @@
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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 T4_INPUT_REPORT_LEN sizeof(struct t4_input_report)
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#define T4_FEATURE_REPORT_LEN T4_INPUT_REPORT_LEN
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#define T4_FEATURE_REPORT_ID 7
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#define T4_CMD_REGISTER_READ 0x08
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#define T4_CMD_REGISTER_WRITE 0x07
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#define T4_ADDRESS_BASE 0xC2C0
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#define PRM_SYS_CONFIG_1 (T4_ADDRESS_BASE + 0x0002)
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#define T4_PRM_FEED_CONFIG_1 (T4_ADDRESS_BASE + 0x0004)
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#define T4_PRM_FEED_CONFIG_4 (T4_ADDRESS_BASE + 0x001A)
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#define T4_PRM_ID_CONFIG_3 (T4_ADDRESS_BASE + 0x00B0)
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#define T4_FEEDCFG4_ADVANCED_ABS_ENABLE 0x01
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#define T4_I2C_ABS 0x78
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#define T4_COUNT_PER_ELECTRODE 256
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#define MAX_TOUCHES 5
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enum dev_num {
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U1,
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T4,
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UNKNOWN,
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};
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/**
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* struct u1_data
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*
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@ -74,11 +96,12 @@
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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 alps_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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enum dev_num dev_type;
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u8 max_fingers;
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u8 has_sp;
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u8 sp_btn_info;
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@ -92,6 +115,141 @@ struct u1_dev {
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u32 sp_btn_cnt;
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};
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struct t4_contact_data {
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u8 palm;
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u8 x_lo;
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u8 x_hi;
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u8 y_lo;
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u8 y_hi;
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};
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struct t4_input_report {
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u8 reportID;
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u8 numContacts;
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struct t4_contact_data contact[5];
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u8 button;
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u8 track[5];
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u8 zx[5], zy[5];
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u8 palmTime[5];
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u8 kilroy;
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u16 timeStamp;
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};
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static u16 t4_calc_check_sum(u8 *buffer,
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unsigned long offset, unsigned long length)
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{
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u16 sum1 = 0xFF, sum2 = 0xFF;
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unsigned long i = 0;
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if (offset + length >= 50)
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return 0;
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while (length > 0) {
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u32 tlen = length > 20 ? 20 : length;
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length -= tlen;
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do {
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sum1 += buffer[offset + i];
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sum2 += sum1;
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i++;
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} while (--tlen > 0);
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sum1 = (sum1 & 0xFF) + (sum1 >> 8);
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sum2 = (sum2 & 0xFF) + (sum2 >> 8);
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}
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sum1 = (sum1 & 0xFF) + (sum1 >> 8);
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sum2 = (sum2 & 0xFF) + (sum2 >> 8);
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return(sum2 << 8 | sum1);
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}
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static int t4_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;
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u16 check_sum;
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u8 *input;
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u8 *readbuf;
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input = kzalloc(T4_FEATURE_REPORT_LEN, GFP_KERNEL);
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if (!input)
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return -ENOMEM;
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input[0] = T4_FEATURE_REPORT_ID;
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if (read_flag) {
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input[1] = T4_CMD_REGISTER_READ;
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input[8] = 0x00;
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} else {
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input[1] = T4_CMD_REGISTER_WRITE;
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input[8] = write_val;
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}
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put_unaligned_le32(address, input + 2);
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input[6] = 1;
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input[7] = 0;
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/* Calculate the checksum */
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check_sum = t4_calc_check_sum(input, 1, 8);
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input[9] = (u8)check_sum;
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input[10] = (u8)(check_sum >> 8);
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input[11] = 0;
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ret = hid_hw_raw_request(hdev, T4_FEATURE_REPORT_ID, input,
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T4_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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readbuf = kzalloc(T4_FEATURE_REPORT_LEN, GFP_KERNEL);
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if (read_flag) {
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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, T4_FEATURE_REPORT_ID, readbuf,
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T4_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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goto exit_readbuf;
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}
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if (*(u32 *)&readbuf[6] != address) {
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dev_err(&hdev->dev, "read register address error (%x,%x)\n",
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*(u32 *)&readbuf[6], address);
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goto exit_readbuf;
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}
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if (*(u16 *)&readbuf[10] != 1) {
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dev_err(&hdev->dev, "read register size error (%x)\n",
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*(u16 *)&readbuf[10]);
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goto exit_readbuf;
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}
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check_sum = t4_calc_check_sum(readbuf, 6, 7);
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if (*(u16 *)&readbuf[13] != check_sum) {
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dev_err(&hdev->dev, "read register checksum error (%x,%x)\n",
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*(u16 *)&readbuf[13], check_sum);
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goto exit_readbuf;
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}
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*read_val = readbuf[12];
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}
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ret = 0;
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exit_readbuf:
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kfree(readbuf);
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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 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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@ -159,21 +317,60 @@ exit:
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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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static int t4_raw_event(struct alps_dev *hdata, 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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struct t4_input_report *p_report = (struct t4_input_report *)data;
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if (!data)
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return 0;
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for (i = 0; i < hdata->max_fingers; i++) {
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x = p_report->contact[i].x_hi << 8 | p_report->contact[i].x_lo;
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y = p_report->contact[i].y_hi << 8 | p_report->contact[i].y_lo;
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y = hdata->y_max - y + hdata->y_min;
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z = (p_report->contact[i].palm < 0x80 &&
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p_report->contact[i].palm > 0) * 62;
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if (x == 0xffff) {
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x = 0;
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y = 0;
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z = 0;
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}
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input_mt_slot(hdata->input, i);
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input_mt_report_slot_state(hdata->input,
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MT_TOOL_FINGER, z != 0);
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if (!z)
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continue;
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input_report_abs(hdata->input, ABS_MT_POSITION_X, x);
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input_report_abs(hdata->input, ABS_MT_POSITION_Y, y);
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input_report_abs(hdata->input, ABS_MT_PRESSURE, z);
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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, p_report->button);
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input_sync(hdata->input);
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return 1;
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}
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static int u1_raw_event(struct alps_dev *hdata, 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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if (!data)
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return 0;
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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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for (i = 0; i < hdata->max_fingers; i++) {
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u8 *contact = &data[i * 5];
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x = get_unaligned_le16(contact + 3);
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@ -235,21 +432,52 @@ static int alps_raw_event(struct hid_device *hdev,
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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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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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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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int ret = 0;
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struct alps_dev *hdata = hid_get_drvdata(hdev);
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switch (hdev->product) {
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case HID_PRODUCT_ID_T4_BTNLESS:
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ret = t4_raw_event(hdata, data, size);
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break;
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default:
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ret = u1_raw_event(hdata, data, size);
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break;
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}
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return ret;
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}
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static int alps_post_resume(struct hid_device *hdev)
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static int __maybe_unused 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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#endif /* CONFIG_PM */
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int ret = -1;
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struct alps_dev *data = hid_get_drvdata(hdev);
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static int u1_init(struct hid_device *hdev, struct u1_dev *pri_data)
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switch (data->dev_type) {
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case T4:
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ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_1,
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NULL, T4_I2C_ABS, false);
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ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_4,
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NULL, T4_FEEDCFG4_ADVANCED_ABS_ENABLE, false);
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break;
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case U1:
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ret = u1_read_write_register(hdev,
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ADDRESS_U1_DEV_CTRL_1, NULL,
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U1_TP_ABS_MODE | U1_SP_ABS_MODE, false);
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break;
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default:
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break;
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}
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return ret;
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}
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static int __maybe_unused alps_post_resume(struct hid_device *hdev)
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{
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return alps_post_reset(hdev);
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}
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static int u1_init(struct hid_device *hdev, struct alps_dev *pri_data)
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{
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int ret;
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u8 tmp, dev_ctrl, sen_line_num_x, sen_line_num_y;
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@ -361,9 +589,60 @@ exit:
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return ret;
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}
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static int T4_init(struct hid_device *hdev, struct alps_dev *pri_data)
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{
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int ret;
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u8 tmp, sen_line_num_x, sen_line_num_y;
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ret = t4_read_write_register(hdev, T4_PRM_ID_CONFIG_3, &tmp, 0, true);
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if (ret < 0) {
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dev_err(&hdev->dev, "failed T4_PRM_ID_CONFIG_3 (%d)\n", ret);
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goto exit;
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}
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sen_line_num_x = 16 + ((tmp & 0x0F) | (tmp & 0x08 ? 0xF0 : 0));
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sen_line_num_y = 12 + (((tmp & 0xF0) >> 4) | (tmp & 0x80 ? 0xF0 : 0));
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pri_data->x_max = sen_line_num_x * T4_COUNT_PER_ELECTRODE;
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pri_data->x_min = T4_COUNT_PER_ELECTRODE;
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pri_data->y_max = sen_line_num_y * T4_COUNT_PER_ELECTRODE;
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pri_data->y_min = T4_COUNT_PER_ELECTRODE;
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pri_data->x_active_len_mm = pri_data->y_active_len_mm = 0;
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pri_data->btn_cnt = 1;
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ret = t4_read_write_register(hdev, PRM_SYS_CONFIG_1, &tmp, 0, true);
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if (ret < 0) {
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dev_err(&hdev->dev, "failed PRM_SYS_CONFIG_1 (%d)\n", ret);
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goto exit;
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}
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tmp |= 0x02;
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ret = t4_read_write_register(hdev, PRM_SYS_CONFIG_1, NULL, tmp, false);
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if (ret < 0) {
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dev_err(&hdev->dev, "failed PRM_SYS_CONFIG_1 (%d)\n", ret);
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goto exit;
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}
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ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_1,
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NULL, T4_I2C_ABS, false);
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if (ret < 0) {
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dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_1 (%d)\n", ret);
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goto exit;
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}
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ret = t4_read_write_register(hdev, T4_PRM_FEED_CONFIG_4, NULL,
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T4_FEEDCFG4_ADVANCED_ABS_ENABLE, false);
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if (ret < 0) {
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dev_err(&hdev->dev, "failed T4_PRM_FEED_CONFIG_4 (%d)\n", ret);
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goto exit;
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}
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pri_data->max_fingers = 5;
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pri_data->has_sp = 0;
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exit:
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return ret;
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}
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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 alps_dev *data = hid_get_drvdata(hdev);
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struct input_dev *input = hi->input, *input2;
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int ret;
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int res_x, res_y, i;
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@ -377,8 +656,16 @@ static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi)
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/* Allow incoming hid reports */
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hid_device_io_start(hdev);
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ret = u1_init(hdev, data);
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switch (data->dev_type) {
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case T4:
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ret = T4_init(hdev, data);
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break;
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case U1:
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ret = u1_init(hdev, data);
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break;
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default:
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break;
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}
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if (ret)
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goto exit;
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@ -458,10 +745,9 @@ static int alps_input_mapping(struct hid_device *hdev,
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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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struct alps_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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data = devm_kzalloc(&hdev->dev, sizeof(struct alps_dev), GFP_KERNEL);
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if (!data)
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return -ENOMEM;
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@ -476,6 +762,17 @@ static int alps_probe(struct hid_device *hdev, const struct hid_device_id *id)
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return ret;
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}
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switch (hdev->product) {
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case HID_DEVICE_ID_ALPS_T4_BTNLESS:
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data->dev_type = T4;
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break;
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case HID_DEVICE_ID_ALPS_U1_DUAL:
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data->dev_type = U1;
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break;
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default:
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data->dev_type = UNKNOWN;
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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");
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@ -493,6 +790,8 @@ static void alps_remove(struct hid_device *hdev)
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static const struct hid_device_id alps_id[] = {
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{ HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY,
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USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1_DUAL) },
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{ HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY,
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USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_T4_BTNLESS) },
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{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(hid, alps_id);
|
||||
|
|
|
|||
|
|
@ -1889,6 +1889,8 @@ static const struct hid_device_id hid_have_special_driver[] = {
|
|||
#endif
|
||||
#if IS_ENABLED(CONFIG_HID_ALPS)
|
||||
{ HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1_DUAL) },
|
||||
{ HID_I2C_DEVICE(USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1_DUAL) },
|
||||
{ HID_I2C_DEVICE(USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_T4_BTNLESS) },
|
||||
#endif
|
||||
#if IS_ENABLED(CONFIG_HID_APPLE)
|
||||
{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
|
||||
|
|
|
|||
|
|
@ -77,6 +77,8 @@
|
|||
#define HID_DEVICE_ID_ALPS_U1_DUAL 0x120B
|
||||
#define HID_DEVICE_ID_ALPS_U1_DUAL_PTP 0x121F
|
||||
#define HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP 0x1220
|
||||
#define HID_DEVICE_ID_ALPS_T4_BTNLESS 0x120C
|
||||
|
||||
|
||||
#define USB_VENDOR_ID_AMI 0x046b
|
||||
#define USB_DEVICE_ID_AMI_VIRT_KEYBOARD_AND_MOUSE 0xff10
|
||||
|
|
|
|||
Loading…
Reference in New Issue