linux/drivers/hid/hid-alps.c
Benjamin Tissoires 7dd8db6894 HID: alps: allow incoming reports when only the trackstick is opened
If userspace only reads the trackstick node, and no one is listening to
the touchpad nor the hidraw node then, the device is not powered on.

Add open/close callbacks to allow users to disable the touchpad in Gnome
while keeping the trackstick active.

Link: https://bugzilla.redhat.com/show_bug.cgi?id=1559632
Link: https://gitlab.gnome.org/GNOME/mutter/issues/128
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-10-26 17:27:13 +02:00

859 lines
20 KiB
C

/*
* 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(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 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;
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:
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));
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) {
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;
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);
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;
}
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");