587 lines
15 KiB
C
587 lines
15 KiB
C
/*
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* Generic linux-input device driver for keyboard devices
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*
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* Copyright (c) 2001 Brian S. Julin
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL").
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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*
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* References:
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* HP-HIL Technical Reference Manual. Hewlett Packard Product No. 45918A
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*
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*/
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#include <linux/hil.h>
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#include <linux/input.h>
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#include <linux/serio.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/completion.h>
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#include <linux/slab.h>
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#include <linux/pci_ids.h>
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#define PREFIX "HIL: "
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MODULE_AUTHOR("Brian S. Julin <bri@calyx.com>");
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MODULE_DESCRIPTION("HIL keyboard/mouse driver");
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MODULE_LICENSE("Dual BSD/GPL");
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MODULE_ALIAS("serio:ty03pr25id00ex*"); /* HIL keyboard */
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MODULE_ALIAS("serio:ty03pr25id0Fex*"); /* HIL mouse */
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#define HIL_PACKET_MAX_LENGTH 16
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#define HIL_KBD_SET1_UPBIT 0x01
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#define HIL_KBD_SET1_SHIFT 1
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static unsigned int hil_kbd_set1[HIL_KEYCODES_SET1_TBLSIZE] __read_mostly =
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{ HIL_KEYCODES_SET1 };
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#define HIL_KBD_SET2_UPBIT 0x01
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#define HIL_KBD_SET2_SHIFT 1
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/* Set2 is user defined */
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#define HIL_KBD_SET3_UPBIT 0x80
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#define HIL_KBD_SET3_SHIFT 0
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static unsigned int hil_kbd_set3[HIL_KEYCODES_SET3_TBLSIZE] __read_mostly =
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{ HIL_KEYCODES_SET3 };
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static const char hil_language[][16] = { HIL_LOCALE_MAP };
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struct hil_dev {
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struct input_dev *dev;
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struct serio *serio;
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/* Input buffer and index for packets from HIL bus. */
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hil_packet data[HIL_PACKET_MAX_LENGTH];
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int idx4; /* four counts per packet */
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/* Raw device info records from HIL bus, see hil.h for fields. */
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char idd[HIL_PACKET_MAX_LENGTH]; /* DID byte and IDD record */
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char rsc[HIL_PACKET_MAX_LENGTH]; /* RSC record */
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char exd[HIL_PACKET_MAX_LENGTH]; /* EXD record */
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char rnm[HIL_PACKET_MAX_LENGTH + 1]; /* RNM record + NULL term. */
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struct completion cmd_done;
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bool is_pointer;
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/* Extra device details needed for pointing devices. */
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unsigned int nbtn, naxes;
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unsigned int btnmap[7];
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};
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static bool hil_dev_is_command_response(hil_packet p)
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{
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if ((p & ~HIL_CMDCT_POL) == (HIL_ERR_INT | HIL_PKT_CMD | HIL_CMD_POL))
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return false;
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if ((p & ~HIL_CMDCT_RPL) == (HIL_ERR_INT | HIL_PKT_CMD | HIL_CMD_RPL))
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return false;
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return true;
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}
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static void hil_dev_handle_command_response(struct hil_dev *dev)
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{
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hil_packet p;
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char *buf;
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int i, idx;
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idx = dev->idx4 / 4;
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p = dev->data[idx - 1];
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switch (p & HIL_PKT_DATA_MASK) {
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case HIL_CMD_IDD:
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buf = dev->idd;
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break;
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case HIL_CMD_RSC:
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buf = dev->rsc;
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break;
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case HIL_CMD_EXD:
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buf = dev->exd;
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break;
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case HIL_CMD_RNM:
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dev->rnm[HIL_PACKET_MAX_LENGTH] = 0;
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buf = dev->rnm;
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break;
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default:
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/* These occur when device isn't present */
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if (p != (HIL_ERR_INT | HIL_PKT_CMD)) {
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/* Anything else we'd like to know about. */
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printk(KERN_WARNING PREFIX "Device sent unknown record %x\n", p);
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}
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goto out;
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}
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for (i = 0; i < idx; i++)
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buf[i] = dev->data[i] & HIL_PKT_DATA_MASK;
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for (; i < HIL_PACKET_MAX_LENGTH; i++)
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buf[i] = 0;
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out:
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complete(&dev->cmd_done);
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}
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static void hil_dev_handle_kbd_events(struct hil_dev *kbd)
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{
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struct input_dev *dev = kbd->dev;
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int idx = kbd->idx4 / 4;
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int i;
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switch (kbd->data[0] & HIL_POL_CHARTYPE_MASK) {
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case HIL_POL_CHARTYPE_NONE:
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return;
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case HIL_POL_CHARTYPE_ASCII:
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for (i = 1; i < idx - 1; i++)
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input_report_key(dev, kbd->data[i] & 0x7f, 1);
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break;
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case HIL_POL_CHARTYPE_RSVD1:
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case HIL_POL_CHARTYPE_RSVD2:
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case HIL_POL_CHARTYPE_BINARY:
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for (i = 1; i < idx - 1; i++)
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input_report_key(dev, kbd->data[i], 1);
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break;
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case HIL_POL_CHARTYPE_SET1:
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for (i = 1; i < idx - 1; i++) {
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unsigned int key = kbd->data[i];
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int up = key & HIL_KBD_SET1_UPBIT;
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key &= (~HIL_KBD_SET1_UPBIT & 0xff);
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key = hil_kbd_set1[key >> HIL_KBD_SET1_SHIFT];
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input_report_key(dev, key, !up);
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}
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break;
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case HIL_POL_CHARTYPE_SET2:
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for (i = 1; i < idx - 1; i++) {
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unsigned int key = kbd->data[i];
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int up = key & HIL_KBD_SET2_UPBIT;
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key &= (~HIL_KBD_SET1_UPBIT & 0xff);
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key = key >> HIL_KBD_SET2_SHIFT;
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input_report_key(dev, key, !up);
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}
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break;
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case HIL_POL_CHARTYPE_SET3:
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for (i = 1; i < idx - 1; i++) {
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unsigned int key = kbd->data[i];
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int up = key & HIL_KBD_SET3_UPBIT;
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key &= (~HIL_KBD_SET1_UPBIT & 0xff);
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key = hil_kbd_set3[key >> HIL_KBD_SET3_SHIFT];
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input_report_key(dev, key, !up);
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}
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break;
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}
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input_sync(dev);
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}
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static void hil_dev_handle_ptr_events(struct hil_dev *ptr)
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{
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struct input_dev *dev = ptr->dev;
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int idx = ptr->idx4 / 4;
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hil_packet p = ptr->data[idx - 1];
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int i, cnt, laxis;
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bool absdev, ax16;
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if ((p & HIL_CMDCT_POL) != idx - 1) {
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printk(KERN_WARNING PREFIX
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"Malformed poll packet %x (idx = %i)\n", p, idx);
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return;
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}
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i = (p & HIL_POL_AXIS_ALT) ? 3 : 0;
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laxis = (p & HIL_POL_NUM_AXES_MASK) + i;
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ax16 = ptr->idd[1] & HIL_IDD_HEADER_16BIT; /* 8 or 16bit resolution */
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absdev = ptr->idd[1] & HIL_IDD_HEADER_ABS;
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for (cnt = 1; i < laxis; i++) {
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unsigned int lo, hi, val;
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lo = ptr->data[cnt++] & HIL_PKT_DATA_MASK;
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hi = ax16 ? (ptr->data[cnt++] & HIL_PKT_DATA_MASK) : 0;
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if (absdev) {
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val = lo + (hi << 8);
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#ifdef TABLET_AUTOADJUST
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if (val < input_abs_get_min(dev, ABS_X + i))
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input_abs_set_min(dev, ABS_X + i, val);
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if (val > input_abs_get_max(dev, ABS_X + i))
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input_abs_set_max(dev, ABS_X + i, val);
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#endif
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if (i % 3)
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val = input_abs_get_max(dev, ABS_X + i) - val;
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input_report_abs(dev, ABS_X + i, val);
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} else {
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val = (int) (((int8_t) lo) | ((int8_t) hi << 8));
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if (i % 3)
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val *= -1;
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input_report_rel(dev, REL_X + i, val);
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}
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}
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while (cnt < idx - 1) {
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unsigned int btn = ptr->data[cnt++];
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int up = btn & 1;
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btn &= 0xfe;
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if (btn == 0x8e)
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continue; /* TODO: proximity == touch? */
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if (btn > 0x8c || btn < 0x80)
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continue;
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btn = (btn - 0x80) >> 1;
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btn = ptr->btnmap[btn];
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input_report_key(dev, btn, !up);
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}
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input_sync(dev);
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}
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static void hil_dev_process_err(struct hil_dev *dev)
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{
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printk(KERN_WARNING PREFIX "errored HIL packet\n");
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dev->idx4 = 0;
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complete(&dev->cmd_done); /* just in case somebody is waiting */
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}
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static irqreturn_t hil_dev_interrupt(struct serio *serio,
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unsigned char data, unsigned int flags)
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{
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struct hil_dev *dev;
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hil_packet packet;
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int idx;
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dev = serio_get_drvdata(serio);
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BUG_ON(dev == NULL);
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if (dev->idx4 >= HIL_PACKET_MAX_LENGTH * sizeof(hil_packet)) {
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hil_dev_process_err(dev);
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goto out;
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}
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idx = dev->idx4 / 4;
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if (!(dev->idx4 % 4))
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dev->data[idx] = 0;
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packet = dev->data[idx];
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packet |= ((hil_packet)data) << ((3 - (dev->idx4 % 4)) * 8);
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dev->data[idx] = packet;
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/* Records of N 4-byte hil_packets must terminate with a command. */
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if ((++dev->idx4 % 4) == 0) {
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if ((packet & 0xffff0000) != HIL_ERR_INT) {
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hil_dev_process_err(dev);
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} else if (packet & HIL_PKT_CMD) {
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if (hil_dev_is_command_response(packet))
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hil_dev_handle_command_response(dev);
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else if (dev->is_pointer)
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hil_dev_handle_ptr_events(dev);
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else
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hil_dev_handle_kbd_events(dev);
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dev->idx4 = 0;
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}
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}
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out:
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return IRQ_HANDLED;
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}
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static void hil_dev_disconnect(struct serio *serio)
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{
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struct hil_dev *dev = serio_get_drvdata(serio);
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BUG_ON(dev == NULL);
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serio_close(serio);
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input_unregister_device(dev->dev);
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serio_set_drvdata(serio, NULL);
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kfree(dev);
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}
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static void hil_dev_keyboard_setup(struct hil_dev *kbd)
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{
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struct input_dev *input_dev = kbd->dev;
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uint8_t did = kbd->idd[0];
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int i;
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input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
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input_dev->ledbit[0] = BIT_MASK(LED_NUML) | BIT_MASK(LED_CAPSL) |
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BIT_MASK(LED_SCROLLL);
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for (i = 0; i < 128; i++) {
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__set_bit(hil_kbd_set1[i], input_dev->keybit);
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__set_bit(hil_kbd_set3[i], input_dev->keybit);
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}
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__clear_bit(KEY_RESERVED, input_dev->keybit);
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input_dev->keycodemax = HIL_KEYCODES_SET1_TBLSIZE;
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input_dev->keycodesize = sizeof(hil_kbd_set1[0]);
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input_dev->keycode = hil_kbd_set1;
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input_dev->name = strlen(kbd->rnm) ? kbd->rnm : "HIL keyboard";
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input_dev->phys = "hpkbd/input0";
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printk(KERN_INFO PREFIX "HIL keyboard found (did = 0x%02x, lang = %s)\n",
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did, hil_language[did & HIL_IDD_DID_TYPE_KB_LANG_MASK]);
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}
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static void hil_dev_pointer_setup(struct hil_dev *ptr)
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{
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struct input_dev *input_dev = ptr->dev;
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uint8_t did = ptr->idd[0];
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uint8_t *idd = ptr->idd + 1;
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unsigned int naxsets = HIL_IDD_NUM_AXSETS(*idd);
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unsigned int i, btntype;
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const char *txt;
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ptr->naxes = HIL_IDD_NUM_AXES_PER_SET(*idd);
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switch (did & HIL_IDD_DID_TYPE_MASK) {
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case HIL_IDD_DID_TYPE_REL:
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input_dev->evbit[0] = BIT_MASK(EV_REL);
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for (i = 0; i < ptr->naxes; i++)
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__set_bit(REL_X + i, input_dev->relbit);
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for (i = 3; naxsets > 1 && i < ptr->naxes + 3; i++)
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__set_bit(REL_X + i, input_dev->relbit);
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txt = "relative";
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break;
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case HIL_IDD_DID_TYPE_ABS:
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input_dev->evbit[0] = BIT_MASK(EV_ABS);
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for (i = 0; i < ptr->naxes; i++)
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input_set_abs_params(input_dev, ABS_X + i,
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0, HIL_IDD_AXIS_MAX(idd, i), 0, 0);
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for (i = 3; naxsets > 1 && i < ptr->naxes + 3; i++)
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input_set_abs_params(input_dev, ABS_X + i,
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0, HIL_IDD_AXIS_MAX(idd, i - 3), 0, 0);
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#ifdef TABLET_AUTOADJUST
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for (i = 0; i < ABS_MAX; i++) {
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int diff = input_abs_get_max(input_dev, ABS_X + i) / 10;
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input_abs_set_min(input_dev, ABS_X + i,
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input_abs_get_min(input_dev, ABS_X + i) + diff);
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input_abs_set_max(input_dev, ABS_X + i,
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input_abs_get_max(input_dev, ABS_X + i) - diff);
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}
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#endif
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txt = "absolute";
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break;
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default:
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BUG();
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}
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ptr->nbtn = HIL_IDD_NUM_BUTTONS(idd);
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if (ptr->nbtn)
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input_dev->evbit[0] |= BIT_MASK(EV_KEY);
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btntype = BTN_MISC;
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if ((did & HIL_IDD_DID_ABS_TABLET_MASK) == HIL_IDD_DID_ABS_TABLET)
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#ifdef TABLET_SIMULATES_MOUSE
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btntype = BTN_TOUCH;
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#else
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btntype = BTN_DIGI;
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#endif
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if ((did & HIL_IDD_DID_ABS_TSCREEN_MASK) == HIL_IDD_DID_ABS_TSCREEN)
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btntype = BTN_TOUCH;
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if ((did & HIL_IDD_DID_REL_MOUSE_MASK) == HIL_IDD_DID_REL_MOUSE)
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btntype = BTN_MOUSE;
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for (i = 0; i < ptr->nbtn; i++) {
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__set_bit(btntype | i, input_dev->keybit);
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ptr->btnmap[i] = btntype | i;
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}
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if (btntype == BTN_MOUSE) {
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/* Swap buttons 2 and 3 */
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ptr->btnmap[1] = BTN_MIDDLE;
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ptr->btnmap[2] = BTN_RIGHT;
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}
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input_dev->name = strlen(ptr->rnm) ? ptr->rnm : "HIL pointer device";
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printk(KERN_INFO PREFIX
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"HIL pointer device found (did: 0x%02x, axis: %s)\n",
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did, txt);
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printk(KERN_INFO PREFIX
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"HIL pointer has %i buttons and %i sets of %i axes\n",
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ptr->nbtn, naxsets, ptr->naxes);
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}
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static int hil_dev_connect(struct serio *serio, struct serio_driver *drv)
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{
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struct hil_dev *dev;
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struct input_dev *input_dev;
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uint8_t did, *idd;
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int error;
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dev = kzalloc(sizeof(*dev), GFP_KERNEL);
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input_dev = input_allocate_device();
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if (!dev || !input_dev) {
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error = -ENOMEM;
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goto bail0;
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}
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dev->serio = serio;
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dev->dev = input_dev;
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error = serio_open(serio, drv);
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if (error)
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goto bail0;
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serio_set_drvdata(serio, dev);
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/* Get device info. MLC driver supplies devid/status/etc. */
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init_completion(&dev->cmd_done);
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serio_write(serio, 0);
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serio_write(serio, 0);
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serio_write(serio, HIL_PKT_CMD >> 8);
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serio_write(serio, HIL_CMD_IDD);
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error = wait_for_completion_killable(&dev->cmd_done);
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if (error)
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goto bail1;
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reinit_completion(&dev->cmd_done);
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serio_write(serio, 0);
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serio_write(serio, 0);
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serio_write(serio, HIL_PKT_CMD >> 8);
|
|
serio_write(serio, HIL_CMD_RSC);
|
|
error = wait_for_completion_killable(&dev->cmd_done);
|
|
if (error)
|
|
goto bail1;
|
|
|
|
reinit_completion(&dev->cmd_done);
|
|
serio_write(serio, 0);
|
|
serio_write(serio, 0);
|
|
serio_write(serio, HIL_PKT_CMD >> 8);
|
|
serio_write(serio, HIL_CMD_RNM);
|
|
error = wait_for_completion_killable(&dev->cmd_done);
|
|
if (error)
|
|
goto bail1;
|
|
|
|
reinit_completion(&dev->cmd_done);
|
|
serio_write(serio, 0);
|
|
serio_write(serio, 0);
|
|
serio_write(serio, HIL_PKT_CMD >> 8);
|
|
serio_write(serio, HIL_CMD_EXD);
|
|
error = wait_for_completion_killable(&dev->cmd_done);
|
|
if (error)
|
|
goto bail1;
|
|
|
|
did = dev->idd[0];
|
|
idd = dev->idd + 1;
|
|
|
|
switch (did & HIL_IDD_DID_TYPE_MASK) {
|
|
case HIL_IDD_DID_TYPE_KB_INTEGRAL:
|
|
case HIL_IDD_DID_TYPE_KB_ITF:
|
|
case HIL_IDD_DID_TYPE_KB_RSVD:
|
|
case HIL_IDD_DID_TYPE_CHAR:
|
|
if (HIL_IDD_NUM_BUTTONS(idd) ||
|
|
HIL_IDD_NUM_AXES_PER_SET(*idd)) {
|
|
printk(KERN_INFO PREFIX
|
|
"combo devices are not supported.\n");
|
|
error = -EINVAL;
|
|
goto bail1;
|
|
}
|
|
|
|
dev->is_pointer = false;
|
|
hil_dev_keyboard_setup(dev);
|
|
break;
|
|
|
|
case HIL_IDD_DID_TYPE_REL:
|
|
case HIL_IDD_DID_TYPE_ABS:
|
|
dev->is_pointer = true;
|
|
hil_dev_pointer_setup(dev);
|
|
break;
|
|
|
|
default:
|
|
goto bail1;
|
|
}
|
|
|
|
input_dev->id.bustype = BUS_HIL;
|
|
input_dev->id.vendor = PCI_VENDOR_ID_HP;
|
|
input_dev->id.product = 0x0001; /* TODO: get from kbd->rsc */
|
|
input_dev->id.version = 0x0100; /* TODO: get from kbd->rsc */
|
|
input_dev->dev.parent = &serio->dev;
|
|
|
|
if (!dev->is_pointer) {
|
|
serio_write(serio, 0);
|
|
serio_write(serio, 0);
|
|
serio_write(serio, HIL_PKT_CMD >> 8);
|
|
/* Enable Keyswitch Autorepeat 1 */
|
|
serio_write(serio, HIL_CMD_EK1);
|
|
/* No need to wait for completion */
|
|
}
|
|
|
|
error = input_register_device(input_dev);
|
|
if (error)
|
|
goto bail1;
|
|
|
|
return 0;
|
|
|
|
bail1:
|
|
serio_close(serio);
|
|
serio_set_drvdata(serio, NULL);
|
|
bail0:
|
|
input_free_device(input_dev);
|
|
kfree(dev);
|
|
return error;
|
|
}
|
|
|
|
static const struct serio_device_id hil_dev_ids[] = {
|
|
{
|
|
.type = SERIO_HIL_MLC,
|
|
.proto = SERIO_HIL,
|
|
.id = SERIO_ANY,
|
|
.extra = SERIO_ANY,
|
|
},
|
|
{ 0 }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(serio, hil_dev_ids);
|
|
|
|
static struct serio_driver hil_serio_drv = {
|
|
.driver = {
|
|
.name = "hil_dev",
|
|
},
|
|
.description = "HP HIL keyboard/mouse/tablet driver",
|
|
.id_table = hil_dev_ids,
|
|
.connect = hil_dev_connect,
|
|
.disconnect = hil_dev_disconnect,
|
|
.interrupt = hil_dev_interrupt
|
|
};
|
|
|
|
module_serio_driver(hil_serio_drv);
|