diff options
| -rw-r--r-- | drivers/hid/hid-elan.c | 65 | ||||
| -rw-r--r-- | drivers/hid/hid-ids.h | 1 |
2 files changed, 61 insertions, 5 deletions
diff --git a/drivers/hid/hid-elan.c b/drivers/hid/hid-elan.c index 4b050d395ecc..07e26c3567eb 100644 --- a/drivers/hid/hid-elan.c +++ b/drivers/hid/hid-elan.c @@ -19,10 +19,13 @@ #include "hid-ids.h" +#define ELAN_MT_I2C 0x5d #define ELAN_SINGLE_FINGER 0x81 #define ELAN_MT_FIRST_FINGER 0x82 #define ELAN_MT_SECOND_FINGER 0x83 #define ELAN_INPUT_REPORT_SIZE 8 +#define ELAN_I2C_REPORT_SIZE 32 +#define ELAN_FINGER_DATA_LEN 5 #define ELAN_MAX_FINGERS 5 #define ELAN_MAX_PRESSURE 255 #define ELAN_TP_USB_INTF 1 @@ -51,9 +54,14 @@ struct elan_drvdata { static int is_not_elan_touchpad(struct hid_device *hdev) { - struct usb_interface *intf = to_usb_interface(hdev->dev.parent); + if (hdev->bus == BUS_USB) { + struct usb_interface *intf = to_usb_interface(hdev->dev.parent); - return (intf->altsetting->desc.bInterfaceNumber != ELAN_TP_USB_INTF); + return (intf->altsetting->desc.bInterfaceNumber != + ELAN_TP_USB_INTF); + } + + return 0; } static int elan_input_mapping(struct hid_device *hdev, struct hid_input *hi, @@ -65,7 +73,8 @@ static int elan_input_mapping(struct hid_device *hdev, struct hid_input *hi, if (field->report->id == ELAN_SINGLE_FINGER || field->report->id == ELAN_MT_FIRST_FINGER || - field->report->id == ELAN_MT_SECOND_FINGER) + field->report->id == ELAN_MT_SECOND_FINGER || + field->report->id == ELAN_MT_I2C) return -1; return 0; @@ -224,7 +233,7 @@ static void elan_report_mt_slot(struct elan_drvdata *drvdata, u8 *data, } } -static void elan_report_input(struct elan_drvdata *drvdata, u8 *data) +static void elan_usb_report_input(struct elan_drvdata *drvdata, u8 *data) { int i; struct input_dev *input = drvdata->input; @@ -311,6 +320,46 @@ static void elan_report_input(struct elan_drvdata *drvdata, u8 *data) input_sync(input); } +static void elan_i2c_report_input(struct elan_drvdata *drvdata, u8 *data) +{ + struct input_dev *input = drvdata->input; + u8 *finger_data; + int i; + + /* + * Elan MT touchpads in i2c mode send finger data in the same format + * as in USB mode, but then with all fingers in a single packet. + * + * packet structure for ELAN_MT_I2C: + * + * byte 1: 1 0 0 1 1 1 0 1 // 0x5d + * byte 2: f5 f4 f3 f2 f1 0 0 L + * byte 3: x12 x11 x10 x9 0? y11 y10 y9 + * byte 4: x8 x7 x6 x5 x4 x3 x2 x1 + * byte 5: y8 y7 y6 y5 y4 y3 y2 y1 + * byte 6: sy4 sy3 sy2 sy1 sx4 sx3 sx2 sx1 + * byte 7: p8 p7 p6 p5 p4 p3 p2 p1 + * byte 8-12: Same as byte 3-7 for second finger down + * byte 13-17: Same as byte 3-7 for third finger down + * byte 18-22: Same as byte 3-7 for fourth finger down + * byte 23-27: Same as byte 3-7 for fifth finger down + */ + + finger_data = data + 2; + for (i = 0; i < ELAN_MAX_FINGERS; i++) { + if (data[1] & BIT(i + 3)) { + elan_report_mt_slot(drvdata, finger_data, i); + finger_data += ELAN_FINGER_DATA_LEN; + } else { + elan_report_mt_slot(drvdata, NULL, i); + } + } + + input_report_key(input, BTN_LEFT, data[1] & 0x01); + input_mt_sync_frame(input); + input_sync(input); +} + static int elan_raw_event(struct hid_device *hdev, struct hid_report *report, u8 *data, int size) { @@ -323,11 +372,16 @@ static int elan_raw_event(struct hid_device *hdev, data[0] == ELAN_MT_FIRST_FINGER || data[0] == ELAN_MT_SECOND_FINGER) { if (size == ELAN_INPUT_REPORT_SIZE) { - elan_report_input(drvdata, data); + elan_usb_report_input(drvdata, data); return 1; } } + if (data[0] == ELAN_MT_I2C && size == ELAN_I2C_REPORT_SIZE) { + elan_i2c_report_input(drvdata, data); + return 1; + } + return 0; } @@ -474,6 +528,7 @@ static const struct hid_device_id elan_devices[] = { .driver_data = ELAN_HAS_LED }, { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_HP_X2_10_COVER), .driver_data = ELAN_HAS_LED }, + { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_TOSHIBA_CLICK_L9W) }, { } }; MODULE_DEVICE_TABLE(hid, elan_devices); diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index 28f96de2a84e..aa57e70e54db 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -369,6 +369,7 @@ #define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001 0xa001 #define USB_VENDOR_ID_ELAN 0x04f3 +#define USB_DEVICE_ID_TOSHIBA_CLICK_L9W 0x0401 #define USB_DEVICE_ID_HP_X2 0x074d #define USB_DEVICE_ID_HP_X2_10_COVER 0x0755 |