forked from Minki/linux
HID: asus: Add i2c touchpad support
Update the hid-asus module to add multitouch support for the Asus i2c touchpad. This patch aims to resolve the issue raised here: https://bugzilla.kernel.org/show_bug.cgi?id=120181 The issue is in relation to an Asus touchpad device which currently does not have multitouch support. The device currently falls through to the hid-generic driver which treats the device as a mouse. This patch aims to add the multitouch support. [jkosina@suse.cz: move most of the 'patch comment' into actual changelog] [jkosina@suse.cz: drop hunk that changes ->name of the driver] Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Brendan McGrath <redmcg@redmandi.dyndns.org> Signed-off-by: Victor Vlasenko <victor.vlasenko@sysgears.com> Signed-off-by: Frederik Wenigwieser <frederik.wenigwieser@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Brendan McGrath
Jiri Kosina
parent
e2b6535d47
commit
9ce12d8be1
@ -138,7 +138,7 @@ config HID_ASUS
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tristate "Asus"
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depends on I2C_HID
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---help---
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Support for Asus notebook built-in keyboard via i2c.
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Support for Asus notebook built-in keyboard and touchpad via i2c.
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Supported devices:
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- EeeBook X205TA
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@ -11,6 +11,12 @@
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* This module based on hid-ortek by
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* Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
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* Copyright (c) 2011 Jiri Kosina
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*
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* This module has been updated to add support for Asus i2c touchpad.
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*
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* Copyright (c) 2016 Brendan McGrath <redmcg@redmandi.dyndns.org>
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* Copyright (c) 2016 Victor Vlasenko <victor.vlasenko@sysgears.com>
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* Copyright (c) 2016 Frederik Wenigwieser <frederik.wenigwieser@gmail.com>
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*/
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/*
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@ -20,16 +26,287 @@
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* any later version.
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*/
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#include <linux/device.h>
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#include <linux/hid.h>
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#include <linux/module.h>
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#include <linux/input/mt.h>
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#include "hid-ids.h"
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MODULE_AUTHOR("Yusuke Fujimaki <usk.fujimaki@gmail.com>");
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MODULE_AUTHOR("Brendan McGrath <redmcg@redmandi.dyndns.org>");
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MODULE_AUTHOR("Victor Vlasenko <victor.vlasenko@sysgears.com>");
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MODULE_AUTHOR("Frederik Wenigwieser <frederik.wenigwieser@gmail.com>");
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MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");
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#define FEATURE_REPORT_ID 0x0d
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#define INPUT_REPORT_ID 0x5d
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#define INPUT_REPORT_SIZE 28
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#define MAX_CONTACTS 5
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#define MAX_X 2794
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#define MAX_Y 1758
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#define MAX_TOUCH_MAJOR 8
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#define MAX_PRESSURE 128
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#define CONTACT_DATA_SIZE 5
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#define BTN_LEFT_MASK 0x01
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#define CONTACT_TOOL_TYPE_MASK 0x80
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#define CONTACT_X_MSB_MASK 0xf0
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#define CONTACT_Y_MSB_MASK 0x0f
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#define CONTACT_TOUCH_MAJOR_MASK 0x07
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#define CONTACT_PRESSURE_MASK 0x7f
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#define QUIRK_FIX_NOTEBOOK_REPORT BIT(0)
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#define QUIRK_NO_INIT_REPORTS BIT(1)
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#define QUIRK_SKIP_INPUT_MAPPING BIT(2)
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#define QUIRK_IS_MULTITOUCH BIT(3)
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#define NOTEBOOK_QUIRKS QUIRK_FIX_NOTEBOOK_REPORT
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#define TOUCHPAD_QUIRKS (QUIRK_NO_INIT_REPORTS | \
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QUIRK_SKIP_INPUT_MAPPING | \
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QUIRK_IS_MULTITOUCH)
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#define TRKID_SGN ((TRKID_MAX + 1) >> 1)
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struct asus_drvdata {
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unsigned long quirks;
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struct input_dev *input;
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};
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static void asus_report_contact_down(struct input_dev *input,
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int toolType, u8 *data)
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{
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int touch_major, pressure;
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int x = (data[0] & CONTACT_X_MSB_MASK) << 4 | data[1];
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int y = MAX_Y - ((data[0] & CONTACT_Y_MSB_MASK) << 8 | data[2]);
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if (toolType == MT_TOOL_PALM) {
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touch_major = MAX_TOUCH_MAJOR;
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pressure = MAX_PRESSURE;
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} else {
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touch_major = (data[3] >> 4) & CONTACT_TOUCH_MAJOR_MASK;
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pressure = data[4] & CONTACT_PRESSURE_MASK;
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}
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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_MT_TOUCH_MAJOR, touch_major);
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input_report_abs(input, ABS_MT_PRESSURE, pressure);
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}
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/* Required for Synaptics Palm Detection */
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static void asus_report_tool_width(struct input_dev *input)
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{
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struct input_mt *mt = input->mt;
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struct input_mt_slot *oldest;
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int oldid, count, i;
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oldest = NULL;
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oldid = mt->trkid;
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count = 0;
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for (i = 0; i < mt->num_slots; ++i) {
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struct input_mt_slot *ps = &mt->slots[i];
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int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID);
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if (id < 0)
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continue;
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if ((id - oldid) & TRKID_SGN) {
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oldest = ps;
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oldid = id;
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}
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count++;
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}
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if (oldest) {
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input_report_abs(input, ABS_TOOL_WIDTH,
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input_mt_get_value(oldest, ABS_MT_TOUCH_MAJOR));
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}
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}
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static void asus_report_input(struct input_dev *input, u8 *data)
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{
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int i;
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u8 *contactData = data + 2;
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for (i = 0; i < MAX_CONTACTS; i++) {
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bool down = !!(data[1] & BIT(i+3));
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int toolType = contactData[3] & CONTACT_TOOL_TYPE_MASK ?
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MT_TOOL_PALM : MT_TOOL_FINGER;
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input_mt_slot(input, i);
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input_mt_report_slot_state(input, toolType, down);
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if (down) {
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asus_report_contact_down(input, toolType, contactData);
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contactData += CONTACT_DATA_SIZE;
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}
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}
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input_report_key(input, BTN_LEFT, data[1] & BTN_LEFT_MASK);
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asus_report_tool_width(input);
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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 asus_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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struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
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if (drvdata->quirks & QUIRK_IS_MULTITOUCH &&
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data[0] == INPUT_REPORT_ID &&
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size == INPUT_REPORT_SIZE) {
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asus_report_input(drvdata->input, 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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static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi)
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{
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struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
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if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {
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int ret;
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struct input_dev *input = hi->input;
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input_set_abs_params(input, ABS_MT_POSITION_X, 0, MAX_X, 0, 0);
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input_set_abs_params(input, ABS_MT_POSITION_Y, 0, MAX_Y, 0, 0);
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input_set_abs_params(input, ABS_TOOL_WIDTH, 0, MAX_TOUCH_MAJOR, 0, 0);
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input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, MAX_TOUCH_MAJOR, 0, 0);
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input_set_abs_params(input, ABS_MT_PRESSURE, 0, MAX_PRESSURE, 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, MAX_CONTACTS, INPUT_MT_POINTER);
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if (ret) {
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hid_err(hdev, "Asus input mt init slots failed: %d\n", ret);
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return ret;
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}
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drvdata->input = input;
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}
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return 0;
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}
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static int asus_input_mapping(struct hid_device *hdev,
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struct hid_input *hi, struct hid_field *field,
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struct hid_usage *usage, unsigned long **bit,
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int *max)
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{
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struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
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if (drvdata->quirks & QUIRK_SKIP_INPUT_MAPPING) {
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/* Don't map anything from the HID report.
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* We do it all manually in asus_input_configured
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*/
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return -1;
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}
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return 0;
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}
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static int asus_start_multitouch(struct hid_device *hdev)
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{
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int ret;
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const unsigned char buf[] = { FEATURE_REPORT_ID, 0x00, 0x03, 0x01, 0x00 };
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unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL);
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if (!dmabuf) {
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ret = -ENOMEM;
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hid_err(hdev, "Asus failed to alloc dma buf: %d\n", ret);
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return ret;
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}
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ret = hid_hw_raw_request(hdev, dmabuf[0], dmabuf, sizeof(buf),
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HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
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kfree(dmabuf);
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if (ret != sizeof(buf)) {
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hid_err(hdev, "Asus failed to start multitouch: %d\n", 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 int __maybe_unused asus_reset_resume(struct hid_device *hdev)
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{
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struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
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if (drvdata->quirks & QUIRK_IS_MULTITOUCH)
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return asus_start_multitouch(hdev);
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return 0;
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}
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static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id)
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{
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int ret;
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struct asus_drvdata *drvdata;
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drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL);
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if (drvdata == NULL) {
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hid_err(hdev, "Can't alloc Asus descriptor\n");
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return -ENOMEM;
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}
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hid_set_drvdata(hdev, drvdata);
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drvdata->quirks = id->driver_data;
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if (drvdata->quirks & QUIRK_NO_INIT_REPORTS)
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hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
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ret = hid_parse(hdev);
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if (ret) {
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hid_err(hdev, "Asus hid parse failed: %d\n", ret);
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return ret;
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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, "Asus hw start failed: %d\n", ret);
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return ret;
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}
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if (!drvdata->input) {
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hid_err(hdev, "Asus input not registered\n");
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ret = -ENOMEM;
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goto err_stop_hw;
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}
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drvdata->input->name = "Asus TouchPad";
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if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {
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ret = asus_start_multitouch(hdev);
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if (ret)
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goto err_stop_hw;
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}
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return 0;
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err_stop_hw:
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hid_hw_stop(hdev);
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return ret;
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}
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static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc,
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unsigned int *rsize)
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{
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if (*rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) {
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struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
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if (drvdata->quirks & QUIRK_FIX_NOTEBOOK_REPORT &&
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*rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) {
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hid_info(hdev, "Fixing up Asus notebook report descriptor\n");
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rdesc[55] = 0xdd;
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}
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@ -37,15 +314,25 @@ static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc,
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}
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static const struct hid_device_id asus_devices[] = {
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{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_NOTEBOOK_KEYBOARD) },
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{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
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USB_DEVICE_ID_ASUSTEK_NOTEBOOK_KEYBOARD), NOTEBOOK_QUIRKS},
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{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
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USB_DEVICE_ID_ASUSTEK_TOUCHPAD), TOUCHPAD_QUIRKS },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, asus_devices);
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static struct hid_driver asus_driver = {
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.name = "asus",
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.id_table = asus_devices,
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.report_fixup = asus_report_fixup
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.name = "asus",
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.id_table = asus_devices,
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.report_fixup = asus_report_fixup,
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.probe = asus_probe,
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.input_mapping = asus_input_mapping,
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.input_configured = asus_input_configured,
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#ifdef CONFIG_PM
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.reset_resume = asus_reset_resume,
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#endif
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.raw_event = asus_raw_event
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};
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module_hid_driver(asus_driver);
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@ -1857,6 +1857,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
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{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_NOTEBOOK_KEYBOARD) },
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{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_TOUCHPAD) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185BFM, 0x2208) },
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@ -171,6 +171,7 @@
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#define USB_DEVICE_ID_ASUSTEK_LCM 0x1726
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#define USB_DEVICE_ID_ASUSTEK_LCM2 0x175b
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#define USB_DEVICE_ID_ASUSTEK_NOTEBOOK_KEYBOARD 0x8585
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#define USB_DEVICE_ID_ASUSTEK_TOUCHPAD 0x0101
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#define USB_VENDOR_ID_ATEN 0x0557
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#define USB_DEVICE_ID_ATEN_UC100KM 0x2004
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Block a user