Input: byd - enable absolute mode (2d5f5611) · Commits · 戴 / test

drivers/input/mouse/byd.c

+368 −197

Original line number	Diff line number	Diff line
		@@ -12,10 +12,12 @@
		#include <linux/input.h>
		#include <linux/libps2.h>
		#include <linux/serio.h>
		#include <linux/slab.h>

		#include "psmouse.h"
		#include "byd.h"

		/* PS2 Bits */
		#define PS2_Y_OVERFLOW BIT_MASK(7)
		#define PS2_X_OVERFLOW BIT_MASK(6)
		#define PS2_Y_SIGN BIT_MASK(5)
		@@ -26,69 +28,249 @@
		#define PS2_LEFT BIT_MASK(0)

		/*
		* The touchpad reports gestures in the last byte of each packet. It can take
		* any of the following values:
		* BYD pad constants
		*/

		/* One-finger scrolling in one of the edge scroll zones. */
		#define BYD_SCROLLUP 0xCA
		#define BYD_SCROLLDOWN 0x36
		#define BYD_SCROLLLEFT 0xCB
		#define BYD_SCROLLRIGHT 0x35
		/* Two-finger scrolling. */
		#define BYD_2DOWN 0x2B
		#define BYD_2UP 0xD5
		#define BYD_2LEFT 0xD6
		#define BYD_2RIGHT 0x2A
		/* Pinching in or out. */
		#define BYD_ZOOMOUT 0xD8
		#define BYD_ZOOMIN 0x28
		/* Three-finger swipe. */
		#define BYD_3UP 0xD3
		#define BYD_3DOWN 0x2D
		#define BYD_3LEFT 0xD4
		#define BYD_3RIGHT 0x2C
		/* Four-finger swipe. */
		#define BYD_4UP 0xCD
		#define BYD_4DOWN 0x33
		/*
		* True device resolution is unknown, however experiments show the
		* resolution is about 111 units/mm.
		* Absolute coordinate packets are in the range 0-255 for both X and Y
		* we pick ABS_X/ABS_Y dimensions which are multiples of 256 and in
		* the right ballpark given the touchpad's physical dimensions and estimate
		* resolution per spec sheet, device active area dimensions are
		* 101.6 x 60.1 mm.
		*/
		#define BYD_PAD_WIDTH 11264
		#define BYD_PAD_HEIGHT 6656
		#define BYD_PAD_RESOLUTION 111

		int byd_detect(struct psmouse *psmouse, bool set_properties)
		{
		struct ps2dev *ps2dev = &psmouse->ps2dev;
		unsigned char param[4];
		/*
		* Given the above dimensions, relative packets velocity is in multiples of
		* 1 unit / 11 milliseconds. We use this dt to estimate distance traveled
		*/
		#define BYD_DT 11
		/* Time in jiffies used to timeout various touch events (64 ms) */
		#define BYD_TOUCH_TIMEOUT msecs_to_jiffies(64)

		param[0] = 0x03;
		param[1] = 0x00;
		param[2] = 0x00;
		param[3] = 0x00;
		/* BYD commands reverse engineered from windows driver */

		if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES))
		return -1;
		if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES))
		return -1;
		if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES))
		return -1;
		if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES))
		return -1;
		if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
		return -1;
		/*
		* Swipe gesture from off-pad to on-pad
		* 0 : disable
		* 1 : enable
		*/
		#define BYD_CMD_SET_OFFSCREEN_SWIPE 0x10cc
		/*
		* Tap and drag delay time
		* 0 : disable
		* 1 - 8 : least to most delay
		*/
		#define BYD_CMD_SET_TAP_DRAG_DELAY_TIME 0x10cf
		/*
		* Physical buttons function mapping
		* 0 : enable
		* 4 : normal
		* 5 : left button custom command
		* 6 : right button custom command
		* 8 : disable
		*/
		#define BYD_CMD_SET_PHYSICAL_BUTTONS 0x10d0
		/*
		* Absolute mode (1 byte X/Y resolution)
		* 0 : disable
		* 2 : enable
		*/
		#define BYD_CMD_SET_ABSOLUTE_MODE 0x10d1
		/*
		* Two finger scrolling
		* 1 : vertical
		* 2 : horizontal
		* 3 : vertical + horizontal
		* 4 : disable
		*/
		#define BYD_CMD_SET_TWO_FINGER_SCROLL 0x10d2
		/*
		* Handedness
		* 1 : right handed
		* 2 : left handed
		*/
		#define BYD_CMD_SET_HANDEDNESS 0x10d3
		/*
		* Tap to click
		* 1 : enable
		* 2 : disable
		*/
		#define BYD_CMD_SET_TAP 0x10d4
		/*
		* Tap and drag
		* 1 : tap and hold to drag
		* 2 : tap and hold to drag + lock
		* 3 : disable
		*/
		#define BYD_CMD_SET_TAP_DRAG 0x10d5
		/*
		* Touch sensitivity
		* 1 - 7 : least to most sensitive
		*/
		#define BYD_CMD_SET_TOUCH_SENSITIVITY 0x10d6
		/*
		* One finger scrolling
		* 1 : vertical
		* 2 : horizontal
		* 3 : vertical + horizontal
		* 4 : disable
		*/
		#define BYD_CMD_SET_ONE_FINGER_SCROLL 0x10d7
		/*
		* One finger scrolling function
		* 1 : free scrolling
		* 2 : edge motion
		* 3 : free scrolling + edge motion
		* 4 : disable
		*/
		#define BYD_CMD_SET_ONE_FINGER_SCROLL_FUNC 0x10d8
		/*
		* Sliding speed
		* 1 - 5 : slowest to fastest
		*/
		#define BYD_CMD_SET_SLIDING_SPEED 0x10da
		/*
		* Edge motion
		* 1 : disable
		* 2 : enable when dragging
		* 3 : enable when dragging and pointing
		*/
		#define BYD_CMD_SET_EDGE_MOTION 0x10db
		/*
		* Left edge region size
		* 0 - 7 : smallest to largest width
		*/
		#define BYD_CMD_SET_LEFT_EDGE_REGION 0x10dc
		/*
		* Top edge region size
		* 0 - 9 : smallest to largest height
		*/
		#define BYD_CMD_SET_TOP_EDGE_REGION 0x10dd
		/*
		* Disregard palm press as clicks
		* 1 - 6 : smallest to largest
		*/
		#define BYD_CMD_SET_PALM_CHECK 0x10de
		/*
		* Right edge region size
		* 0 - 7 : smallest to largest width
		*/
		#define BYD_CMD_SET_RIGHT_EDGE_REGION 0x10df
		/*
		* Bottom edge region size
		* 0 - 9 : smallest to largest height
		*/
		#define BYD_CMD_SET_BOTTOM_EDGE_REGION 0x10e1
		/*
		* Multitouch gestures
		* 1 : enable
		* 2 : disable
		*/
		#define BYD_CMD_SET_MULTITOUCH 0x10e3
		/*
		* Edge motion speed
		* 0 : control with finger pressure
		* 1 - 9 : slowest to fastest
		*/
		#define BYD_CMD_SET_EDGE_MOTION_SPEED 0x10e4
		/*
		* Two finger scolling function
		* 0 : free scrolling
		* 1 : free scrolling (with momentum)
		* 2 : edge motion
		* 3 : free scrolling (with momentum) + edge motion
		* 4 : disable
		*/
		#define BYD_CMD_SET_TWO_FINGER_SCROLL_FUNC 0x10e5

		if (param[1] != 0x03 \|\| param[2] != 0x64)
		return -ENODEV;
		/*
		* The touchpad generates a mixture of absolute and relative packets, indicated
		* by the the last byte of each packet being set to one of the following:
		*/
		#define BYD_PACKET_ABSOLUTE 0xf8
		#define BYD_PACKET_RELATIVE 0x00
		/* Multitouch gesture packets */
		#define BYD_PACKET_PINCH_IN 0xd8
		#define BYD_PACKET_PINCH_OUT 0x28
		#define BYD_PACKET_ROTATE_CLOCKWISE 0x29
		#define BYD_PACKET_ROTATE_ANTICLOCKWISE 0xd7
		#define BYD_PACKET_TWO_FINGER_SCROLL_RIGHT 0x2a
		#define BYD_PACKET_TWO_FINGER_SCROLL_DOWN 0x2b
		#define BYD_PACKET_TWO_FINGER_SCROLL_UP 0xd5
		#define BYD_PACKET_TWO_FINGER_SCROLL_LEFT 0xd6
		#define BYD_PACKET_THREE_FINGER_SWIPE_RIGHT 0x2c
		#define BYD_PACKET_THREE_FINGER_SWIPE_DOWN 0x2d
		#define BYD_PACKET_THREE_FINGER_SWIPE_UP 0xd3
		#define BYD_PACKET_THREE_FINGER_SWIPE_LEFT 0xd4
		#define BYD_PACKET_FOUR_FINGER_DOWN 0x33
		#define BYD_PACKET_FOUR_FINGER_UP 0xcd
		#define BYD_PACKET_REGION_SCROLL_RIGHT 0x35
		#define BYD_PACKET_REGION_SCROLL_DOWN 0x36
		#define BYD_PACKET_REGION_SCROLL_UP 0xca
		#define BYD_PACKET_REGION_SCROLL_LEFT 0xcb
		#define BYD_PACKET_RIGHT_CORNER_CLICK 0xd2
		#define BYD_PACKET_LEFT_CORNER_CLICK 0x2e
		#define BYD_PACKET_LEFT_AND_RIGHT_CORNER_CLICK 0x2f
		#define BYD_PACKET_ONTO_PAD_SWIPE_RIGHT 0x37
		#define BYD_PACKET_ONTO_PAD_SWIPE_DOWN 0x30
		#define BYD_PACKET_ONTO_PAD_SWIPE_UP 0xd0
		#define BYD_PACKET_ONTO_PAD_SWIPE_LEFT 0xc9

		struct byd_data {
		struct timer_list timer;
		s32 abs_x;
		s32 abs_y;
		typeof(jiffies) last_touch_time;
		bool btn_left;
		bool btn_right;
		bool touch;
		};

		psmouse_dbg(psmouse, "BYD touchpad detected\n");
		static void byd_report_input(struct psmouse *psmouse)
		{
		struct byd_data *priv = psmouse->private;
		struct input_dev *dev = psmouse->dev;

		if (set_properties) {
		psmouse->vendor = "BYD";
		psmouse->name = "TouchPad";
		input_report_key(dev, BTN_TOUCH, priv->touch);
		input_report_key(dev, BTN_TOOL_FINGER, priv->touch);

		input_report_abs(dev, ABS_X, priv->abs_x);
		input_report_abs(dev, ABS_Y, priv->abs_y);
		input_report_key(dev, BTN_LEFT, priv->btn_left);
		input_report_key(dev, BTN_RIGHT, priv->btn_right);

		input_sync(dev);
		}

		return 0;
		static void byd_clear_touch(unsigned long data)
		{
		struct psmouse psmouse = (struct psmouse )data;
		struct byd_data *priv = psmouse->private;

		serio_pause_rx(psmouse->ps2dev.serio);
		priv->touch = false;

		byd_report_input(psmouse);

		serio_continue_rx(psmouse->ps2dev.serio);

		/*
		* Move cursor back to center of pad when we lose touch - this
		* specifically improves user experience when moving cursor with one
		* finger, and pressing a button with another.
		*/
		priv->abs_x = BYD_PAD_WIDTH / 2;
		priv->abs_y = BYD_PAD_HEIGHT / 2;
		}

		static psmouse_ret_t byd_process_byte(struct psmouse *psmouse)
		{
		struct input_dev *dev = psmouse->dev;
		struct byd_data *priv = psmouse->private;
		u8 *pkt = psmouse->packet;

		if (psmouse->pktcnt > 0 && !(pkt[0] & PS2_ALWAYS_1)) {
		@@ -102,53 +284,34 @@ static psmouse_ret_t byd_process_byte(struct psmouse *psmouse)

		/* Otherwise, a full packet has been received */
		switch (pkt[3]) {
		case 0: {
		case BYD_PACKET_ABSOLUTE:
		/* Only use absolute packets for the start of movement. */
		if (!priv->touch) {
		/* needed to detect tap */
		typeof(jiffies) tap_time =
		priv->last_touch_time + BYD_TOUCH_TIMEOUT;
		priv->touch = time_after(jiffies, tap_time);

		/* init abs position */
		priv->abs_x = pkt[1] * (BYD_PAD_WIDTH / 256);
		priv->abs_y = (255 - pkt[2]) * (BYD_PAD_HEIGHT / 256);
		}
		break;
		case BYD_PACKET_RELATIVE: {
		/* Standard packet */
		/* Sign-extend if a sign bit is set. */
		unsigned int signx = pkt[0] & PS2_X_SIGN ? ~0xFF : 0;
		unsigned int signy = pkt[0] & PS2_Y_SIGN ? ~0xFF : 0;
		int dx = signx \| (int) pkt[1];
		int dy = signy \| (int) pkt[2];
		u32 signx = pkt[0] & PS2_X_SIGN ? ~0xFF : 0;
		u32 signy = pkt[0] & PS2_Y_SIGN ? ~0xFF : 0;
		s32 dx = signx \| (int) pkt[1];
		s32 dy = signy \| (int) pkt[2];

		input_report_rel(psmouse->dev, REL_X, dx);
		input_report_rel(psmouse->dev, REL_Y, -dy);
		/* Update position based on velocity */
		priv->abs_x += dx * BYD_DT;
		priv->abs_y -= dy * BYD_DT;

		input_report_key(psmouse->dev, BTN_LEFT, pkt[0] & PS2_LEFT);
		input_report_key(psmouse->dev, BTN_RIGHT, pkt[0] & PS2_RIGHT);
		input_report_key(psmouse->dev, BTN_MIDDLE, pkt[0] & PS2_MIDDLE);
		priv->touch = true;
		break;
		}

		case BYD_SCROLLDOWN:
		case BYD_2DOWN:
		input_report_rel(dev, REL_WHEEL, -1);
		break;

		case BYD_SCROLLUP:
		case BYD_2UP:
		input_report_rel(dev, REL_WHEEL, 1);
		break;

		case BYD_SCROLLLEFT:
		case BYD_2LEFT:
		input_report_rel(dev, REL_HWHEEL, -1);
		break;

		case BYD_SCROLLRIGHT:
		case BYD_2RIGHT:
		input_report_rel(dev, REL_HWHEEL, 1);
		break;

		case BYD_ZOOMOUT:
		case BYD_ZOOMIN:
		case BYD_3UP:
		case BYD_3DOWN:
		case BYD_3LEFT:
		case BYD_3RIGHT:
		case BYD_4UP:
		case BYD_4DOWN:
		break;

		default:
		psmouse_warn(psmouse,
		"Unrecognized Z: pkt = %02x %02x %02x %02x\n",
		@@ -157,134 +320,76 @@ static psmouse_ret_t byd_process_byte(struct psmouse *psmouse)
		return PSMOUSE_BAD_DATA;
		}

		input_sync(dev);

		return PSMOUSE_FULL_PACKET;
		}
		priv->btn_left = pkt[0] & PS2_LEFT;
		priv->btn_right = pkt[0] & PS2_RIGHT;

		/* Send a sequence of bytes, where each is ACKed before the next is sent. */
		static int byd_send_sequence(struct psmouse psmouse, const u8 seq, size_t len)
		{
		unsigned int i;
		byd_report_input(psmouse);

		for (i = 0; i < len; ++i) {
		if (ps2_command(&psmouse->ps2dev, NULL, seq[i]))
		return -1;
		/* Reset time since last touch. */
		if (priv->touch) {
		priv->last_touch_time = jiffies;
		mod_timer(&priv->timer, jiffies + BYD_TOUCH_TIMEOUT);
		}
		return 0;
		}

		/* Keep scrolling after fingers are removed. */
		#define SCROLL_INERTIAL 0x01
		#define SCROLL_NO_INERTIAL 0x02

		/* Clicking can be done by tapping or pressing. */
		#define CLICK_BOTH 0x01
		/* Clicking can only be done by pressing. */
		#define CLICK_PRESS_ONLY 0x02

		static int byd_enable(struct psmouse *psmouse)
		{
		const u8 seq1[] = { 0xE2, 0x00, 0xE0, 0x02, 0xE0 };
		const u8 seq2[] = {
		0xD3, 0x01,
		0xD0, 0x00,
		0xD0, 0x04,
		/* Whether clicking is done by tapping or pressing. */
		0xD4, CLICK_PRESS_ONLY,
		0xD5, 0x01,
		0xD7, 0x03,
		/* Vertical and horizontal one-finger scroll zone inertia. */
		0xD8, SCROLL_INERTIAL,
		0xDA, 0x05,
		0xDB, 0x02,
		0xE4, 0x05,
		0xD6, 0x01,
		0xDE, 0x04,
		0xE3, 0x01,
		0xCF, 0x00,
		0xD2, 0x03,
		/* Vertical and horizontal two-finger scrolling inertia. */
		0xE5, SCROLL_INERTIAL,
		0xD9, 0x02,
		0xD9, 0x07,
		0xDC, 0x03,
		0xDD, 0x03,
		0xDF, 0x03,
		0xE1, 0x03,
		0xD1, 0x00,
		0xCE, 0x00,
		0xCC, 0x00,
		0xE0, 0x00,
		0xE2, 0x01
		};
		u8 param[4];

		if (byd_send_sequence(psmouse, seq1, ARRAY_SIZE(seq1)))
		return -1;

		/* Send a 0x01 command, which should return 4 bytes. */
		if (ps2_command(&psmouse->ps2dev, param, 0x0401))
		return -1;

		if (byd_send_sequence(psmouse, seq2, ARRAY_SIZE(seq2)))
		return -1;

		return 0;
		return PSMOUSE_FULL_PACKET;
		}

		/*
		* Send the set of PS/2 commands required to make it identify as an
		* intellimouse with 4-byte instead of 3-byte packets.
		*/
		static int byd_send_intellimouse_sequence(struct psmouse *psmouse)
		static int byd_reset_touchpad(struct psmouse *psmouse)
		{
		struct ps2dev *ps2dev = &psmouse->ps2dev;
		u8 param[4];
		int i;
		size_t i;

		const struct {
		u16 command;
		u8 arg;
		} seq[] = {
		{ PSMOUSE_CMD_RESET_BAT, 0 },
		{ PSMOUSE_CMD_RESET_BAT, 0 },
		{ PSMOUSE_CMD_GETID, 0 },
		{ PSMOUSE_CMD_SETSCALE11, 0 },
		{ PSMOUSE_CMD_SETSCALE11, 0 },
		{ PSMOUSE_CMD_SETSCALE11, 0 },
		{ PSMOUSE_CMD_GETINFO, 0 },
		{ PSMOUSE_CMD_SETRES, 0x03 },
		/*
		* Intellimouse initialization sequence, to get 4-byte instead
		* of 3-byte packets.
		*/
		{ PSMOUSE_CMD_SETRATE, 0xC8 },
		{ PSMOUSE_CMD_SETRATE, 0x64 },
		{ PSMOUSE_CMD_SETRATE, 0x50 },
		{ PSMOUSE_CMD_GETID, 0 },
		{ PSMOUSE_CMD_SETRATE, 0xC8 },
		{ PSMOUSE_CMD_SETRATE, 0xC8 },
		{ PSMOUSE_CMD_SETRATE, 0x50 },
		{ PSMOUSE_CMD_GETID, 0 },
		{ PSMOUSE_CMD_SETRATE, 0x64 },
		{ PSMOUSE_CMD_SETRES, 0x03 },
		{ PSMOUSE_CMD_ENABLE, 0 }
		{ PSMOUSE_CMD_ENABLE, 0 },
		/*
		* BYD-specific initialization, which enables absolute mode and
		* (if desired), the touchpad's built-in gesture detection.
		*/
		{ 0x10E2, 0x00 },
		{ 0x10E0, 0x02 },
		/* The touchpad should reply with 4 seemingly-random bytes */
		{ 0x14E0, 0x01 },
		/* Pairs of parameters and values. */
		{ BYD_CMD_SET_HANDEDNESS, 0x01 },
		{ BYD_CMD_SET_PHYSICAL_BUTTONS, 0x04 },
		{ BYD_CMD_SET_TAP, 0x02 },
		{ BYD_CMD_SET_ONE_FINGER_SCROLL, 0x04 },
		{ BYD_CMD_SET_ONE_FINGER_SCROLL_FUNC, 0x04 },
		{ BYD_CMD_SET_EDGE_MOTION, 0x01 },
		{ BYD_CMD_SET_PALM_CHECK, 0x00 },
		{ BYD_CMD_SET_MULTITOUCH, 0x02 },
		{ BYD_CMD_SET_TWO_FINGER_SCROLL, 0x04 },
		{ BYD_CMD_SET_TWO_FINGER_SCROLL_FUNC, 0x04 },
		{ BYD_CMD_SET_LEFT_EDGE_REGION, 0x00 },
		{ BYD_CMD_SET_TOP_EDGE_REGION, 0x00 },
		{ BYD_CMD_SET_RIGHT_EDGE_REGION, 0x00 },
		{ BYD_CMD_SET_BOTTOM_EDGE_REGION, 0x00 },
		{ BYD_CMD_SET_ABSOLUTE_MODE, 0x02 },
		/* Finalize initialization. */
		{ 0x10E0, 0x00 },
		{ 0x10E2, 0x01 },
		};

		memset(param, 0, sizeof(param));
		for (i = 0; i < ARRAY_SIZE(seq); ++i) {
		memset(param, 0, sizeof(param));
		param[0] = seq[i].arg;
		if (ps2_command(ps2dev, param, seq[i].command))
		return -1;
		}

		return 0;
		}

		static int byd_reset_touchpad(struct psmouse *psmouse)
		{
		if (byd_send_intellimouse_sequence(psmouse))
		return -EIO;

		if (byd_enable(psmouse))
		return -EIO;
		}

		psmouse_set_state(psmouse, PSMOUSE_ACTIVATED);
		return 0;
		}

		@@ -314,9 +419,50 @@ static int byd_reconnect(struct psmouse *psmouse)
		return 0;
		}

		static void byd_disconnect(struct psmouse *psmouse)
		{
		struct byd_data *priv = psmouse->private;

		if (priv) {
		del_timer(&priv->timer);
		kfree(psmouse->private);
		psmouse->private = NULL;
		}
		}

		int byd_detect(struct psmouse *psmouse, bool set_properties)
		{
		struct ps2dev *ps2dev = &psmouse->ps2dev;
		u8 param[4] = {0x03, 0x00, 0x00, 0x00};

		if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES))
		return -1;
		if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES))
		return -1;
		if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES))
		return -1;
		if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES))
		return -1;
		if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
		return -1;

		if (param[1] != 0x03 \|\| param[2] != 0x64)
		return -ENODEV;

		psmouse_dbg(psmouse, "BYD touchpad detected\n");

		if (set_properties) {
		psmouse->vendor = "BYD";
		psmouse->name = "TouchPad";
		}

		return 0;
		}

		int byd_init(struct psmouse *psmouse)
		{
		struct input_dev *dev = psmouse->dev;
		struct byd_data *priv;

		if (psmouse_reset(psmouse))
		return -EIO;
		@@ -324,14 +470,39 @@ int byd_init(struct psmouse *psmouse)
		if (byd_reset_touchpad(psmouse))
		return -EIO;

		priv = kzalloc(sizeof(*priv), GFP_KERNEL);
		if (!priv)
		return -ENOMEM;

		memset(priv, 0, sizeof(*priv));
		setup_timer(&priv->timer, byd_clear_touch, (unsigned long) psmouse);

		psmouse->private = priv;
		psmouse->disconnect = byd_disconnect;
		psmouse->reconnect = byd_reconnect;
		psmouse->protocol_handler = byd_process_byte;
		psmouse->pktsize = 4;
		psmouse->resync_time = 0;

		__set_bit(BTN_MIDDLE, dev->keybit);
		__set_bit(REL_WHEEL, dev->relbit);
		__set_bit(REL_HWHEEL, dev->relbit);
		__set_bit(INPUT_PROP_POINTER, dev->propbit);
		/* Touchpad */
		__set_bit(BTN_TOUCH, dev->keybit);
		__set_bit(BTN_TOOL_FINGER, dev->keybit);
		/* Buttons */
		__set_bit(BTN_LEFT, dev->keybit);
		__set_bit(BTN_RIGHT, dev->keybit);
		__clear_bit(BTN_MIDDLE, dev->keybit);

		/* Absolute position */
		__set_bit(EV_ABS, dev->evbit);
		input_set_abs_params(dev, ABS_X, 0, BYD_PAD_WIDTH, 0, 0);
		input_set_abs_params(dev, ABS_Y, 0, BYD_PAD_HEIGHT, 0, 0);
		input_abs_set_res(dev, ABS_X, BYD_PAD_RESOLUTION);
		input_abs_set_res(dev, ABS_Y, BYD_PAD_RESOLUTION);
		/* No relative support */
		__clear_bit(EV_REL, dev->evbit);
		__clear_bit(REL_X, dev->relbit);
		__clear_bit(REL_Y, dev->relbit);

		return 0;
		}

drivers/input/mouse/psmouse-base.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -846,7 +846,7 @@ static const struct psmouse_protocol psmouse_protocols[] = {
		#ifdef CONFIG_MOUSE_PS2_BYD
		{
		.type = PSMOUSE_BYD,
		.name = "BydPS/2",
		.name = "BYDPS/2",
		.alias = "byd",
		.detect = byd_detect,
		.init = byd_init,

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