445 lines
11 KiB
C
445 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Logitech PS/2++ mouse driver
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*
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* Copyright (c) 1999-2003 Vojtech Pavlik <vojtech@suse.cz>
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* Copyright (c) 2003 Eric Wong <eric@yhbt.net>
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*/
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#include <linux/bitops.h>
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#include <linux/input.h>
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#include <linux/serio.h>
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#include <linux/libps2.h>
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#include <linux/types.h>
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#include "psmouse.h"
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#include "logips2pp.h"
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/* Logitech mouse types */
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#define PS2PP_KIND_WHEEL 1
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#define PS2PP_KIND_MX 2
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#define PS2PP_KIND_TP3 3
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#define PS2PP_KIND_TRACKMAN 4
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/* Logitech mouse features */
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#define PS2PP_WHEEL BIT(0)
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#define PS2PP_HWHEEL BIT(1)
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#define PS2PP_SIDE_BTN BIT(2)
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#define PS2PP_EXTRA_BTN BIT(3)
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#define PS2PP_TASK_BTN BIT(4)
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#define PS2PP_NAV_BTN BIT(5)
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struct ps2pp_info {
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u8 model;
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u8 kind;
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u16 features;
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};
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/*
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* Process a PS2++ or PS2T++ packet.
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*/
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static psmouse_ret_t ps2pp_process_byte(struct psmouse *psmouse)
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{
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struct input_dev *dev = psmouse->dev;
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u8 *packet = psmouse->packet;
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if (psmouse->pktcnt < 3)
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return PSMOUSE_GOOD_DATA;
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/*
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* Full packet accumulated, process it
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*/
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if ((packet[0] & 0x48) == 0x48 && (packet[1] & 0x02) == 0x02) {
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/* Logitech extended packet */
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switch ((packet[1] >> 4) | (packet[0] & 0x30)) {
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case 0x0d: /* Mouse extra info */
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input_report_rel(dev,
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packet[2] & 0x80 ? REL_HWHEEL : REL_WHEEL,
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-sign_extend32(packet[2], 3));
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input_report_key(dev, BTN_SIDE, packet[2] & BIT(4));
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input_report_key(dev, BTN_EXTRA, packet[2] & BIT(5));
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break;
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case 0x0e: /* buttons 4, 5, 6, 7, 8, 9, 10 info */
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input_report_key(dev, BTN_SIDE, packet[2] & BIT(0));
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input_report_key(dev, BTN_EXTRA, packet[2] & BIT(1));
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input_report_key(dev, BTN_TASK, packet[2] & BIT(2));
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input_report_key(dev, BTN_BACK, packet[2] & BIT(3));
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input_report_key(dev, BTN_FORWARD, packet[2] & BIT(4));
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break;
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case 0x0f: /* TouchPad extra info */
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input_report_rel(dev,
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packet[2] & 0x08 ? REL_HWHEEL : REL_WHEEL,
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-sign_extend32(packet[2] >> 4, 3));
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packet[0] = packet[2] | BIT(3);
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break;
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default:
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psmouse_dbg(psmouse,
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"Received PS2++ packet #%x, but don't know how to handle.\n",
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(packet[1] >> 4) | (packet[0] & 0x30));
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break;
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}
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psmouse_report_standard_buttons(dev, packet[0]);
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} else {
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/* Standard PS/2 motion data */
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psmouse_report_standard_packet(dev, packet);
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}
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input_sync(dev);
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return PSMOUSE_FULL_PACKET;
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}
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/*
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* ps2pp_cmd() sends a PS2++ command, sliced into two bit
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* pieces through the SETRES command. This is needed to send extended
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* commands to mice on notebooks that try to understand the PS/2 protocol
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* Ugly.
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*/
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static int ps2pp_cmd(struct psmouse *psmouse, u8 *param, u8 command)
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{
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int error;
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error = ps2_sliced_command(&psmouse->ps2dev, command);
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if (error)
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return error;
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error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_POLL | 0x0300);
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if (error)
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return error;
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return 0;
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}
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/*
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* SmartScroll / CruiseControl for some newer Logitech mice Defaults to
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* enabled if we do nothing to it. Of course I put this in because I want it
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* disabled :P
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* 1 - enabled (if previously disabled, also default)
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* 0 - disabled
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*/
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static void ps2pp_set_smartscroll(struct psmouse *psmouse, bool smartscroll)
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{
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struct ps2dev *ps2dev = &psmouse->ps2dev;
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u8 param[4];
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ps2pp_cmd(psmouse, param, 0x32);
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param[0] = 0;
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ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
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ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
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ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
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param[0] = smartscroll;
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ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
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}
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static ssize_t ps2pp_attr_show_smartscroll(struct psmouse *psmouse,
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void *data, char *buf)
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{
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return sprintf(buf, "%d\n", psmouse->smartscroll);
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}
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static ssize_t ps2pp_attr_set_smartscroll(struct psmouse *psmouse, void *data,
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const char *buf, size_t count)
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{
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unsigned int value;
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int err;
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err = kstrtouint(buf, 10, &value);
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if (err)
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return err;
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if (value > 1)
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return -EINVAL;
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ps2pp_set_smartscroll(psmouse, value);
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psmouse->smartscroll = value;
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return count;
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}
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PSMOUSE_DEFINE_ATTR(smartscroll, S_IWUSR | S_IRUGO, NULL,
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ps2pp_attr_show_smartscroll, ps2pp_attr_set_smartscroll);
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/*
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* Support 800 dpi resolution _only_ if the user wants it (there are good
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* reasons to not use it even if the mouse supports it, and of course there are
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* also good reasons to use it, let the user decide).
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*/
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static void ps2pp_set_resolution(struct psmouse *psmouse,
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unsigned int resolution)
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{
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if (resolution > 400) {
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struct ps2dev *ps2dev = &psmouse->ps2dev;
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u8 param = 3;
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ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
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ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
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ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
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ps2_command(ps2dev, ¶m, PSMOUSE_CMD_SETRES);
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psmouse->resolution = 800;
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} else
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psmouse_set_resolution(psmouse, resolution);
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}
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static void ps2pp_disconnect(struct psmouse *psmouse)
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{
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device_remove_file(&psmouse->ps2dev.serio->dev,
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&psmouse_attr_smartscroll.dattr);
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}
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static const struct ps2pp_info *get_model_info(unsigned char model)
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{
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static const struct ps2pp_info ps2pp_list[] = {
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{ 1, 0, 0 }, /* Simple 2-button mouse */
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{ 12, 0, PS2PP_SIDE_BTN},
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{ 13, 0, 0 },
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{ 15, PS2PP_KIND_MX, /* MX1000 */
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PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN |
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PS2PP_EXTRA_BTN | PS2PP_NAV_BTN | PS2PP_HWHEEL },
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{ 40, 0, PS2PP_SIDE_BTN },
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{ 41, 0, PS2PP_SIDE_BTN },
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{ 42, 0, PS2PP_SIDE_BTN },
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{ 43, 0, PS2PP_SIDE_BTN },
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{ 50, 0, 0 },
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{ 51, 0, 0 },
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{ 52, PS2PP_KIND_WHEEL, PS2PP_SIDE_BTN | PS2PP_WHEEL },
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{ 53, PS2PP_KIND_WHEEL, PS2PP_WHEEL },
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{ 56, PS2PP_KIND_WHEEL, PS2PP_SIDE_BTN | PS2PP_WHEEL }, /* Cordless MouseMan Wheel */
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{ 61, PS2PP_KIND_MX, /* MX700 */
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PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN |
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PS2PP_EXTRA_BTN | PS2PP_NAV_BTN },
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{ 66, PS2PP_KIND_MX, /* MX3100 receiver */
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PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN |
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PS2PP_EXTRA_BTN | PS2PP_NAV_BTN | PS2PP_HWHEEL },
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{ 72, PS2PP_KIND_TRACKMAN, 0 }, /* T-CH11: TrackMan Marble */
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{ 73, PS2PP_KIND_TRACKMAN, PS2PP_SIDE_BTN }, /* TrackMan FX */
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{ 75, PS2PP_KIND_WHEEL, PS2PP_WHEEL },
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{ 76, PS2PP_KIND_WHEEL, PS2PP_WHEEL },
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{ 79, PS2PP_KIND_TRACKMAN, PS2PP_WHEEL }, /* TrackMan with wheel */
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{ 80, PS2PP_KIND_WHEEL, PS2PP_SIDE_BTN | PS2PP_WHEEL },
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{ 81, PS2PP_KIND_WHEEL, PS2PP_WHEEL },
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{ 83, PS2PP_KIND_WHEEL, PS2PP_WHEEL },
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{ 85, PS2PP_KIND_WHEEL, PS2PP_WHEEL },
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{ 86, PS2PP_KIND_WHEEL, PS2PP_WHEEL },
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{ 87, PS2PP_KIND_WHEEL, PS2PP_WHEEL },
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{ 88, PS2PP_KIND_WHEEL, PS2PP_WHEEL },
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{ 96, 0, 0 },
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{ 97, PS2PP_KIND_TP3, PS2PP_WHEEL | PS2PP_HWHEEL },
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{ 99, PS2PP_KIND_WHEEL, PS2PP_WHEEL },
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{ 100, PS2PP_KIND_MX, /* MX510 */
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PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN |
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PS2PP_EXTRA_BTN | PS2PP_NAV_BTN },
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{ 111, PS2PP_KIND_MX, PS2PP_WHEEL | PS2PP_SIDE_BTN }, /* MX300 reports task button as side */
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{ 112, PS2PP_KIND_MX, /* MX500 */
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PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN |
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PS2PP_EXTRA_BTN | PS2PP_NAV_BTN },
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{ 114, PS2PP_KIND_MX, /* MX310 */
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PS2PP_WHEEL | PS2PP_SIDE_BTN |
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PS2PP_TASK_BTN | PS2PP_EXTRA_BTN }
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};
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int i;
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for (i = 0; i < ARRAY_SIZE(ps2pp_list); i++)
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if (model == ps2pp_list[i].model)
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return &ps2pp_list[i];
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return NULL;
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}
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/*
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* Set up input device's properties based on the detected mouse model.
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*/
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static void ps2pp_set_model_properties(struct psmouse *psmouse,
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const struct ps2pp_info *model_info,
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bool using_ps2pp)
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{
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struct input_dev *input_dev = psmouse->dev;
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if (model_info->features & PS2PP_SIDE_BTN)
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input_set_capability(input_dev, EV_KEY, BTN_SIDE);
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if (model_info->features & PS2PP_EXTRA_BTN)
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input_set_capability(input_dev, EV_KEY, BTN_EXTRA);
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if (model_info->features & PS2PP_TASK_BTN)
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input_set_capability(input_dev, EV_KEY, BTN_TASK);
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if (model_info->features & PS2PP_NAV_BTN) {
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input_set_capability(input_dev, EV_KEY, BTN_FORWARD);
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input_set_capability(input_dev, EV_KEY, BTN_BACK);
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}
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if (model_info->features & PS2PP_WHEEL)
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input_set_capability(input_dev, EV_REL, REL_WHEEL);
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if (model_info->features & PS2PP_HWHEEL)
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input_set_capability(input_dev, EV_REL, REL_HWHEEL);
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switch (model_info->kind) {
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case PS2PP_KIND_WHEEL:
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psmouse->name = "Wheel Mouse";
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break;
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case PS2PP_KIND_MX:
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psmouse->name = "MX Mouse";
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break;
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case PS2PP_KIND_TP3:
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psmouse->name = "TouchPad 3";
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break;
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case PS2PP_KIND_TRACKMAN:
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psmouse->name = "TrackMan";
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break;
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default:
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/*
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* Set name to "Mouse" only when using PS2++,
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* otherwise let other protocols define suitable
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* name
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*/
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if (using_ps2pp)
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psmouse->name = "Mouse";
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break;
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}
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}
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static int ps2pp_setup_protocol(struct psmouse *psmouse,
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const struct ps2pp_info *model_info)
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{
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int error;
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psmouse->protocol_handler = ps2pp_process_byte;
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psmouse->pktsize = 3;
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if (model_info->kind != PS2PP_KIND_TP3) {
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psmouse->set_resolution = ps2pp_set_resolution;
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psmouse->disconnect = ps2pp_disconnect;
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error = device_create_file(&psmouse->ps2dev.serio->dev,
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&psmouse_attr_smartscroll.dattr);
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if (error) {
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psmouse_err(psmouse,
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"failed to create smartscroll sysfs attribute, error: %d\n",
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error);
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return error;
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}
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}
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return 0;
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}
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/*
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* Logitech magic init. Detect whether the mouse is a Logitech one
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* and its exact model and try turning on extended protocol for ones
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* that support it.
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*/
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int ps2pp_detect(struct psmouse *psmouse, bool set_properties)
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{
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struct ps2dev *ps2dev = &psmouse->ps2dev;
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const struct ps2pp_info *model_info;
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u8 param[4];
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u8 model, buttons;
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bool use_ps2pp = false;
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int error;
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param[0] = 0;
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ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
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ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
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ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
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ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
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param[1] = 0;
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ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
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model = ((param[0] >> 4) & 0x07) | ((param[0] << 3) & 0x78);
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buttons = param[1];
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if (!model || !buttons)
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return -ENXIO;
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model_info = get_model_info(model);
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if (model_info) {
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/*
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* Do Logitech PS2++ / PS2T++ magic init.
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*/
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if (model_info->kind == PS2PP_KIND_TP3) { /* Touch Pad 3 */
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/* Unprotect RAM */
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param[0] = 0x11; param[1] = 0x04; param[2] = 0x68;
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ps2_command(ps2dev, param, 0x30d1);
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/* Enable features */
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param[0] = 0x11; param[1] = 0x05; param[2] = 0x0b;
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ps2_command(ps2dev, param, 0x30d1);
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/* Enable PS2++ */
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param[0] = 0x11; param[1] = 0x09; param[2] = 0xc3;
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ps2_command(ps2dev, param, 0x30d1);
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param[0] = 0;
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if (!ps2_command(ps2dev, param, 0x13d1) &&
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param[0] == 0x06 && param[1] == 0x00 &&
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param[2] == 0x14) {
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use_ps2pp = true;
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}
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} else {
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param[0] = param[1] = param[2] = 0;
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ps2pp_cmd(psmouse, param, 0x39); /* Magic knock */
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ps2pp_cmd(psmouse, param, 0xDB);
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if ((param[0] & 0x78) == 0x48 &&
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(param[1] & 0xf3) == 0xc2 &&
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(param[2] & 0x03) == ((param[1] >> 2) & 3)) {
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ps2pp_set_smartscroll(psmouse, false);
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use_ps2pp = true;
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}
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}
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} else {
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psmouse_warn(psmouse,
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"Detected unknown Logitech mouse model %d\n",
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model);
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}
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if (set_properties) {
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psmouse->vendor = "Logitech";
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psmouse->model = model;
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if (use_ps2pp) {
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error = ps2pp_setup_protocol(psmouse, model_info);
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if (error)
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return error;
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}
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if (buttons >= 3)
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input_set_capability(psmouse->dev, EV_KEY, BTN_MIDDLE);
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if (model_info)
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ps2pp_set_model_properties(psmouse, model_info, use_ps2pp);
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}
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return use_ps2pp ? 0 : -ENXIO;
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}
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