Merge branch 'for-4.19/elan' into for-linus
Resolution/pressure fixes and new device support for hid-elan
This commit is contained in:
commit
5a12d86ce3
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@ -19,38 +19,49 @@
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#include "hid-ids.h"
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#define ELAN_MT_I2C 0x5d
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#define ELAN_SINGLE_FINGER 0x81
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#define ELAN_MT_FIRST_FINGER 0x82
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#define ELAN_MT_SECOND_FINGER 0x83
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#define ELAN_INPUT_REPORT_SIZE 8
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#define ELAN_I2C_REPORT_SIZE 32
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#define ELAN_FINGER_DATA_LEN 5
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#define ELAN_MAX_FINGERS 5
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#define ELAN_MAX_PRESSURE 255
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#define ELAN_TP_USB_INTF 1
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#define ELAN_FEATURE_REPORT 0x0d
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#define ELAN_FEATURE_SIZE 5
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#define ELAN_PARAM_MAX_X 6
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#define ELAN_PARAM_MAX_Y 7
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#define ELAN_PARAM_RES 8
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#define ELAN_MUTE_LED_REPORT 0xBC
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#define ELAN_LED_REPORT_SIZE 8
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struct elan_touchpad_settings {
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u8 max_fingers;
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u16 max_x;
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u16 max_y;
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u8 max_area_x;
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u8 max_area_y;
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u8 max_w;
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int usb_bInterfaceNumber;
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};
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#define ELAN_HAS_LED BIT(0)
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struct elan_drvdata {
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struct input_dev *input;
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u8 prev_report[ELAN_INPUT_REPORT_SIZE];
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struct led_classdev mute_led;
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u8 mute_led_state;
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struct elan_touchpad_settings *settings;
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u16 max_x;
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u16 max_y;
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u16 res_x;
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u16 res_y;
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};
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static int is_not_elan_touchpad(struct hid_device *hdev)
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{
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struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
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struct elan_drvdata *drvdata = hid_get_drvdata(hdev);
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if (hdev->bus == BUS_USB) {
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struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
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return (intf->altsetting->desc.bInterfaceNumber != drvdata->settings->usb_bInterfaceNumber);
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return (intf->altsetting->desc.bInterfaceNumber !=
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ELAN_TP_USB_INTF);
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}
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return 0;
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}
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static int elan_input_mapping(struct hid_device *hdev, struct hid_input *hi,
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@ -62,12 +73,86 @@ static int elan_input_mapping(struct hid_device *hdev, struct hid_input *hi,
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if (field->report->id == ELAN_SINGLE_FINGER ||
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field->report->id == ELAN_MT_FIRST_FINGER ||
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field->report->id == ELAN_MT_SECOND_FINGER)
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field->report->id == ELAN_MT_SECOND_FINGER ||
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field->report->id == ELAN_MT_I2C)
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return -1;
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return 0;
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}
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static int elan_get_device_param(struct hid_device *hdev,
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unsigned char *dmabuf, unsigned char param)
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{
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int ret;
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dmabuf[0] = ELAN_FEATURE_REPORT;
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dmabuf[1] = 0x05;
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dmabuf[2] = 0x03;
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dmabuf[3] = param;
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dmabuf[4] = 0x01;
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ret = hid_hw_raw_request(hdev, ELAN_FEATURE_REPORT, dmabuf,
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ELAN_FEATURE_SIZE, HID_FEATURE_REPORT,
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HID_REQ_SET_REPORT);
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if (ret != ELAN_FEATURE_SIZE) {
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hid_err(hdev, "Set report error for parm %d: %d\n", param, ret);
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return ret;
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}
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ret = hid_hw_raw_request(hdev, ELAN_FEATURE_REPORT, dmabuf,
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ELAN_FEATURE_SIZE, HID_FEATURE_REPORT,
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HID_REQ_GET_REPORT);
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if (ret != ELAN_FEATURE_SIZE) {
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hid_err(hdev, "Get report error for parm %d: %d\n", param, ret);
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return ret;
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}
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return 0;
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}
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static unsigned int elan_convert_res(char val)
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{
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/*
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* (value from firmware) * 10 + 790 = dpi
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* dpi * 10 / 254 = dots/mm
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*/
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return (val * 10 + 790) * 10 / 254;
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}
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static int elan_get_device_params(struct hid_device *hdev)
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{
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struct elan_drvdata *drvdata = hid_get_drvdata(hdev);
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unsigned char *dmabuf;
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int ret;
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dmabuf = kmalloc(ELAN_FEATURE_SIZE, GFP_KERNEL);
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if (!dmabuf)
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return -ENOMEM;
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ret = elan_get_device_param(hdev, dmabuf, ELAN_PARAM_MAX_X);
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if (ret)
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goto err;
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drvdata->max_x = (dmabuf[4] << 8) | dmabuf[3];
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ret = elan_get_device_param(hdev, dmabuf, ELAN_PARAM_MAX_Y);
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if (ret)
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goto err;
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drvdata->max_y = (dmabuf[4] << 8) | dmabuf[3];
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ret = elan_get_device_param(hdev, dmabuf, ELAN_PARAM_RES);
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if (ret)
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goto err;
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drvdata->res_x = elan_convert_res(dmabuf[3]);
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drvdata->res_y = elan_convert_res(dmabuf[4]);
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err:
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kfree(dmabuf);
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return ret;
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}
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static int elan_input_configured(struct hid_device *hdev, struct hid_input *hi)
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{
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int ret;
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@ -77,6 +162,10 @@ static int elan_input_configured(struct hid_device *hdev, struct hid_input *hi)
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if (is_not_elan_touchpad(hdev))
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return 0;
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ret = elan_get_device_params(hdev);
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if (ret)
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return ret;
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input = devm_input_allocate_device(&hdev->dev);
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if (!input)
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return -ENOMEM;
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@ -90,25 +179,25 @@ static int elan_input_configured(struct hid_device *hdev, struct hid_input *hi)
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input->id.version = hdev->version;
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input->dev.parent = &hdev->dev;
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input_set_abs_params(input, ABS_MT_POSITION_X, 0,
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drvdata->settings->max_x, 0, 0);
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input_set_abs_params(input, ABS_MT_POSITION_Y, 0,
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drvdata->settings->max_y, 0, 0);
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input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0,
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drvdata->settings->max_fingers, 0, 0);
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input_set_abs_params(input, ABS_TOOL_WIDTH, 0,
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drvdata->settings->max_w, 0, 0);
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input_set_abs_params(input, ABS_MT_POSITION_X, 0, drvdata->max_x,
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0, 0);
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input_set_abs_params(input, ABS_MT_POSITION_Y, 0, drvdata->max_y,
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0, 0);
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input_set_abs_params(input, ABS_MT_PRESSURE, 0, ELAN_MAX_PRESSURE,
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0, 0);
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__set_bit(BTN_LEFT, input->keybit);
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__set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
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ret = input_mt_init_slots(input, drvdata->settings->max_fingers,
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INPUT_MT_POINTER);
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ret = input_mt_init_slots(input, ELAN_MAX_FINGERS, INPUT_MT_POINTER);
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if (ret) {
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hid_err(hdev, "Failed to init elan MT slots: %d\n", ret);
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return ret;
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}
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input_abs_set_res(input, ABS_X, drvdata->res_x);
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input_abs_set_res(input, ABS_Y, drvdata->res_y);
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ret = input_register_device(input);
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if (ret) {
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hid_err(hdev, "Failed to register elan input device: %d\n",
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@ -126,7 +215,7 @@ static void elan_report_mt_slot(struct elan_drvdata *drvdata, u8 *data,
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unsigned int slot_num)
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{
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struct input_dev *input = drvdata->input;
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int x, y, w;
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int x, y, p;
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bool active = !!data;
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input_mt_report_slot_state(input, MT_TOOL_FINGER, active);
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if (active) {
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x = ((data[0] & 0xF0) << 4) | data[1];
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y = drvdata->settings->max_y -
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y = drvdata->max_y -
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(((data[0] & 0x07) << 8) | data[2]);
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w = data[4];
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p = data[4];
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input_report_abs(input, ABS_MT_POSITION_X, x);
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input_report_abs(input, ABS_MT_POSITION_Y, y);
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input_report_abs(input, ABS_TOOL_WIDTH, w);
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input_report_abs(input, ABS_MT_PRESSURE, p);
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}
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}
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static void elan_report_input(struct elan_drvdata *drvdata, u8 *data)
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static void elan_usb_report_input(struct elan_drvdata *drvdata, u8 *data)
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{
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int i;
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struct input_dev *input = drvdata->input;
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@ -162,7 +251,7 @@ static void elan_report_input(struct elan_drvdata *drvdata, u8 *data)
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* byte 5: x8 x7 x6 x5 x4 x3 x2 x1
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* byte 6: y8 y7 y6 y5 y4 y3 y2 y1
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* byte 7: sy4 sy3 sy2 sy1 sx4 sx3 sx2 sx1
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* byte 8: w8 w7 w6 w5 w4 w3 w2 w1
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* byte 8: p8 p7 p6 p5 p4 p3 p2 p1
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*
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* packet structure for ELAN_MT_SECOND_FINGER:
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*
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@ -171,19 +260,21 @@ static void elan_report_input(struct elan_drvdata *drvdata, u8 *data)
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* byte 3: x8 x7 x6 x5 x4 x3 x2 x1
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* byte 4: y8 y7 y6 y5 y4 y3 y2 y1
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* byte 5: sy4 sy3 sy2 sy1 sx4 sx3 sx2 sx1
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* byte 6: w8 w7 w6 w5 w4 w3 w2 w1
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* byte 6: p8 p7 p6 p5 p4 p3 p2 p1
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* byte 7: 0 0 0 0 0 0 0 0
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* byte 8: 0 0 0 0 0 0 0 0
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*
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* f5-f1: finger touch bits
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* L: clickpad button
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* sy / sx: not sure yet, but this looks like rectangular
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* area for finger
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* w: looks like finger width
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* sy / sx: finger width / height expressed in traces, the total number
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* of traces can be queried by doing a HID_REQ_SET_REPORT
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* { 0x0d, 0x05, 0x03, 0x05, 0x01 } followed by a GET, in the
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* returned buf, buf[3]=no-x-traces, buf[4]=no-y-traces.
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* p: pressure
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*/
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if (data[0] == ELAN_SINGLE_FINGER) {
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for (i = 0; i < drvdata->settings->max_fingers; i++) {
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for (i = 0; i < ELAN_MAX_FINGERS; i++) {
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if (data[2] & BIT(i + 3))
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elan_report_mt_slot(drvdata, data + 3, i);
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else
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@ -210,7 +301,7 @@ static void elan_report_input(struct elan_drvdata *drvdata, u8 *data)
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if (prev_report[0] != ELAN_MT_FIRST_FINGER)
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return;
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for (i = 0; i < drvdata->settings->max_fingers; i++) {
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for (i = 0; i < ELAN_MAX_FINGERS; i++) {
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if (prev_report[2] & BIT(i + 3)) {
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if (!first) {
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first = 1;
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@ -229,6 +320,46 @@ static void elan_report_input(struct elan_drvdata *drvdata, u8 *data)
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input_sync(input);
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}
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static void elan_i2c_report_input(struct elan_drvdata *drvdata, u8 *data)
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{
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struct input_dev *input = drvdata->input;
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u8 *finger_data;
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int i;
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/*
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* Elan MT touchpads in i2c mode send finger data in the same format
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* as in USB mode, but then with all fingers in a single packet.
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*
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* packet structure for ELAN_MT_I2C:
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*
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* byte 1: 1 0 0 1 1 1 0 1 // 0x5d
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* byte 2: f5 f4 f3 f2 f1 0 0 L
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* byte 3: x12 x11 x10 x9 0? y11 y10 y9
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* byte 4: x8 x7 x6 x5 x4 x3 x2 x1
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* byte 5: y8 y7 y6 y5 y4 y3 y2 y1
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* byte 6: sy4 sy3 sy2 sy1 sx4 sx3 sx2 sx1
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* byte 7: p8 p7 p6 p5 p4 p3 p2 p1
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* byte 8-12: Same as byte 3-7 for second finger down
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* byte 13-17: Same as byte 3-7 for third finger down
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* byte 18-22: Same as byte 3-7 for fourth finger down
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* byte 23-27: Same as byte 3-7 for fifth finger down
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*/
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finger_data = data + 2;
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for (i = 0; i < ELAN_MAX_FINGERS; i++) {
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if (data[1] & BIT(i + 3)) {
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elan_report_mt_slot(drvdata, finger_data, i);
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finger_data += ELAN_FINGER_DATA_LEN;
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} else {
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elan_report_mt_slot(drvdata, NULL, i);
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}
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}
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input_report_key(input, BTN_LEFT, data[1] & 0x01);
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input_mt_sync_frame(input);
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input_sync(input);
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}
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static int elan_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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@ -241,11 +372,16 @@ static int elan_raw_event(struct hid_device *hdev,
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data[0] == ELAN_MT_FIRST_FINGER ||
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data[0] == ELAN_MT_SECOND_FINGER) {
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if (size == ELAN_INPUT_REPORT_SIZE) {
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elan_report_input(drvdata, data);
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elan_usb_report_input(drvdata, data);
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return 1;
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}
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}
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if (data[0] == ELAN_MT_I2C && size == ELAN_I2C_REPORT_SIZE) {
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elan_i2c_report_input(drvdata, data);
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return 1;
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}
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return 0;
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}
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@ -343,7 +479,6 @@ static int elan_probe(struct hid_device *hdev, const struct hid_device_id *id)
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if (!drvdata)
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return -ENOMEM;
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drvdata->settings = (struct elan_touchpad_settings *)id->driver_data;
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hid_set_drvdata(hdev, drvdata);
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ret = hid_parse(hdev);
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@ -371,9 +506,11 @@ static int elan_probe(struct hid_device *hdev, const struct hid_device_id *id)
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if (ret)
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goto err;
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ret = elan_init_mute_led(hdev);
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if (ret)
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goto err;
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if (id->driver_data & ELAN_HAS_LED) {
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ret = elan_init_mute_led(hdev);
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if (ret)
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goto err;
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}
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return 0;
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err:
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@ -386,22 +523,14 @@ static void elan_remove(struct hid_device *hdev)
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hid_hw_stop(hdev);
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}
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static const struct elan_touchpad_settings hp_x2_10_touchpad_data = {
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.max_fingers = 5,
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.max_x = 2930,
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.max_y = 1250,
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.max_area_x = 15,
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.max_area_y = 15,
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.max_w = 255,
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.usb_bInterfaceNumber = 1,
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};
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static const struct hid_device_id elan_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_HP_X2),
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.driver_data = ELAN_HAS_LED },
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{ HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_HP_X2_10_COVER),
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(kernel_ulong_t)&hp_x2_10_touchpad_data},
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.driver_data = ELAN_HAS_LED },
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{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_TOSHIBA_CLICK_L9W) },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, elan_devices);
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static struct hid_driver elan_driver = {
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@ -369,6 +369,8 @@
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#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001 0xa001
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#define USB_VENDOR_ID_ELAN 0x04f3
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#define USB_DEVICE_ID_TOSHIBA_CLICK_L9W 0x0401
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#define USB_DEVICE_ID_HP_X2 0x074d
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#define USB_DEVICE_ID_HP_X2_10_COVER 0x0755
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#define USB_VENDOR_ID_ELECOM 0x056e
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