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7b19ada2ed
get rid of input BIT* duplicate defines use newly global defined macros for input layer. Also remove includes of input.h from non-input sources only for BIT macro definiton. Define the macro temporarily in local manner, all those local definitons will be removed further in this patchset (to not break bisecting). BIT macro will be globally defined (1<<x) Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: <dtor@mail.ru> Acked-by: Jiri Kosina <jkosina@suse.cz> Cc: <lenb@kernel.org> Acked-by: Marcel Holtmann <marcel@holtmann.org> Cc: <perex@suse.cz> Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: <vernux@us.ibm.com> Cc: <malattia@linux.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
432 lines
11 KiB
C
432 lines
11 KiB
C
/*
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* Generic linux-input device driver for axis-bearing 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/init.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 PTR: "
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#define HIL_GENERIC_NAME "HIL pointer device"
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MODULE_AUTHOR("Brian S. Julin <bri@calyx.com>");
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MODULE_DESCRIPTION(HIL_GENERIC_NAME " driver");
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MODULE_LICENSE("Dual BSD/GPL");
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#define TABLET_SIMULATES_MOUSE /* allow tablet to be used as mouse */
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#undef TABLET_AUTOADJUST /* auto-adjust valid tablet ranges */
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#define HIL_PTR_MAX_LENGTH 16
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struct hil_ptr {
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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_PTR_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_PTR_MAX_LENGTH]; /* DID byte and IDD record */
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char rsc[HIL_PTR_MAX_LENGTH]; /* RSC record */
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char exd[HIL_PTR_MAX_LENGTH]; /* EXD record */
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char rnm[HIL_PTR_MAX_LENGTH + 1]; /* RNM record + NULL term. */
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/* Extra device details not contained in struct input_dev. */
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unsigned int nbtn, naxes;
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unsigned int btnmap[7];
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/* Something to sleep around with. */
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struct semaphore sem;
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};
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/* Process a complete packet after transfer from the HIL */
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static void hil_ptr_process_record(struct hil_ptr *ptr)
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{
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struct input_dev *dev = ptr->dev;
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hil_packet *data = ptr->data;
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hil_packet p;
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int idx, i, cnt, laxis;
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int ax16, absdev;
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idx = ptr->idx4/4;
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p = data[idx - 1];
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if ((p & ~HIL_CMDCT_POL) ==
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(HIL_ERR_INT | HIL_PKT_CMD | HIL_CMD_POL))
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goto report;
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if ((p & ~HIL_CMDCT_RPL) ==
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(HIL_ERR_INT | HIL_PKT_CMD | HIL_CMD_RPL))
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goto report;
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/* Not a poll response. See if we are loading config records. */
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switch (p & HIL_PKT_DATA_MASK) {
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case HIL_CMD_IDD:
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for (i = 0; i < idx; i++)
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ptr->idd[i] = ptr->data[i] & HIL_PKT_DATA_MASK;
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for (; i < HIL_PTR_MAX_LENGTH; i++)
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ptr->idd[i] = 0;
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break;
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case HIL_CMD_RSC:
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for (i = 0; i < idx; i++)
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ptr->rsc[i] = ptr->data[i] & HIL_PKT_DATA_MASK;
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for (; i < HIL_PTR_MAX_LENGTH; i++)
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ptr->rsc[i] = 0;
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break;
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case HIL_CMD_EXD:
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for (i = 0; i < idx; i++)
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ptr->exd[i] = ptr->data[i] & HIL_PKT_DATA_MASK;
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for (; i < HIL_PTR_MAX_LENGTH; i++)
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ptr->exd[i] = 0;
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break;
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case HIL_CMD_RNM:
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for (i = 0; i < idx; i++)
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ptr->rnm[i] = ptr->data[i] & HIL_PKT_DATA_MASK;
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for (; i < HIL_PTR_MAX_LENGTH + 1; i++)
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ptr->rnm[i] = 0;
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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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break;
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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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break;
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}
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goto out;
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report:
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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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goto out;
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}
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i = (ptr->data[0] & HIL_POL_AXIS_ALT) ? 3 : 0;
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laxis = ptr->data[0] & HIL_POL_NUM_AXES_MASK;
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laxis += 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 < dev->absmin[ABS_X + i])
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dev->absmin[ABS_X + i] = val;
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if (val > dev->absmax[ABS_X + i])
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dev->absmax[ABS_X + i] = val;
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#endif
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if (i%3) val = dev->absmax[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;
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int up;
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btn = ptr->data[cnt++];
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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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else
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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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out:
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ptr->idx4 = 0;
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up(&ptr->sem);
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}
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static void hil_ptr_process_err(struct hil_ptr *ptr)
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{
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printk(KERN_WARNING PREFIX "errored HIL packet\n");
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ptr->idx4 = 0;
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up(&ptr->sem);
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}
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static irqreturn_t hil_ptr_interrupt(struct serio *serio,
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unsigned char data, unsigned int flags)
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{
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struct hil_ptr *ptr;
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hil_packet packet;
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int idx;
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ptr = serio_get_drvdata(serio);
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BUG_ON(ptr == NULL);
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if (ptr->idx4 >= (HIL_PTR_MAX_LENGTH * sizeof(hil_packet))) {
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hil_ptr_process_err(ptr);
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return IRQ_HANDLED;
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}
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idx = ptr->idx4/4;
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if (!(ptr->idx4 % 4))
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ptr->data[idx] = 0;
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packet = ptr->data[idx];
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packet |= ((hil_packet)data) << ((3 - (ptr->idx4 % 4)) * 8);
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ptr->data[idx] = packet;
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/* Records of N 4-byte hil_packets must terminate with a command. */
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if ((++(ptr->idx4)) % 4)
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return IRQ_HANDLED;
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if ((packet & 0xffff0000) != HIL_ERR_INT) {
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hil_ptr_process_err(ptr);
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return IRQ_HANDLED;
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}
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if (packet & HIL_PKT_CMD)
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hil_ptr_process_record(ptr);
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return IRQ_HANDLED;
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}
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static void hil_ptr_disconnect(struct serio *serio)
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{
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struct hil_ptr *ptr;
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ptr = serio_get_drvdata(serio);
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BUG_ON(ptr == NULL);
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serio_close(serio);
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input_unregister_device(ptr->dev);
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kfree(ptr);
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}
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static int hil_ptr_connect(struct serio *serio, struct serio_driver *driver)
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{
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struct hil_ptr *ptr;
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const char *txt;
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unsigned int i, naxsets, btntype;
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uint8_t did, *idd;
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if (!(ptr = kzalloc(sizeof(struct hil_ptr), GFP_KERNEL)))
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return -ENOMEM;
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ptr->dev = input_allocate_device();
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if (!ptr->dev)
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goto bail0;
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if (serio_open(serio, driver))
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goto bail1;
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serio_set_drvdata(serio, ptr);
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ptr->serio = serio;
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init_MUTEX_LOCKED(&ptr->sem);
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/* Get device info. MLC driver supplies devid/status/etc. */
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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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down(&ptr->sem);
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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_RSC);
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down(&ptr->sem);
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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_RNM);
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down(&ptr->sem);
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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_EXD);
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down(&ptr->sem);
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up(&ptr->sem);
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did = ptr->idd[0];
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idd = ptr->idd + 1;
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txt = "unknown";
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if ((did & HIL_IDD_DID_TYPE_MASK) == HIL_IDD_DID_TYPE_REL) {
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ptr->dev->evbit[0] = BIT_MASK(EV_REL);
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txt = "relative";
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}
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if ((did & HIL_IDD_DID_TYPE_MASK) == HIL_IDD_DID_TYPE_ABS) {
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ptr->dev->evbit[0] = BIT_MASK(EV_ABS);
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txt = "absolute";
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}
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if (!ptr->dev->evbit[0])
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goto bail2;
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ptr->nbtn = HIL_IDD_NUM_BUTTONS(idd);
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if (ptr->nbtn)
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ptr->dev->evbit[0] |= BIT_MASK(EV_KEY);
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naxsets = HIL_IDD_NUM_AXSETS(*idd);
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ptr->naxes = HIL_IDD_NUM_AXES_PER_SET(*idd);
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printk(KERN_INFO PREFIX "HIL pointer device found (did: 0x%02x, axis: %s)\n",
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did, txt);
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printk(KERN_INFO PREFIX "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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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, ptr->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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if ((did & HIL_IDD_DID_TYPE_MASK) == HIL_IDD_DID_TYPE_REL) {
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for (i = 0; i < ptr->naxes; i++)
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set_bit(REL_X + i, ptr->dev->relbit);
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for (i = 3; (i < ptr->naxes + 3) && (naxsets > 1); i++)
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set_bit(REL_X + i, ptr->dev->relbit);
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} else {
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for (i = 0; i < ptr->naxes; i++) {
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set_bit(ABS_X + i, ptr->dev->absbit);
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ptr->dev->absmin[ABS_X + i] = 0;
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ptr->dev->absmax[ABS_X + i] =
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HIL_IDD_AXIS_MAX((ptr->idd + 1), i);
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}
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for (i = 3; (i < ptr->naxes + 3) && (naxsets > 1); i++) {
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set_bit(ABS_X + i, ptr->dev->absbit);
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ptr->dev->absmin[ABS_X + i] = 0;
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ptr->dev->absmax[ABS_X + i] =
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HIL_IDD_AXIS_MAX((ptr->idd + 1), (i - 3));
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}
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#ifdef TABLET_AUTOADJUST
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for (i = 0; i < ABS_MAX; i++) {
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int diff = ptr->dev->absmax[ABS_X + i] / 10;
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ptr->dev->absmin[ABS_X + i] += diff;
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ptr->dev->absmax[ABS_X + i] -= diff;
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}
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#endif
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}
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ptr->dev->name = strlen(ptr->rnm) ? ptr->rnm : HIL_GENERIC_NAME;
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ptr->dev->id.bustype = BUS_HIL;
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ptr->dev->id.vendor = PCI_VENDOR_ID_HP;
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ptr->dev->id.product = 0x0001; /* TODO: get from ptr->rsc */
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ptr->dev->id.version = 0x0100; /* TODO: get from ptr->rsc */
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ptr->dev->dev.parent = &serio->dev;
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input_register_device(ptr->dev);
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printk(KERN_INFO "input: %s (%s), ID: %d\n",
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ptr->dev->name,
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(btntype == BTN_MOUSE) ? "HIL mouse":"HIL tablet or touchpad",
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did);
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return 0;
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bail2:
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serio_close(serio);
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bail1:
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input_free_device(ptr->dev);
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bail0:
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kfree(ptr);
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serio_set_drvdata(serio, NULL);
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return -ENODEV;
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}
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static struct serio_device_id hil_ptr_ids[] = {
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{
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.type = SERIO_HIL_MLC,
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.proto = SERIO_HIL,
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.id = SERIO_ANY,
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.extra = SERIO_ANY,
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},
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{ 0 }
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};
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static struct serio_driver hil_ptr_serio_driver = {
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.driver = {
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.name = "hil_ptr",
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},
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.description = "HP HIL mouse/tablet driver",
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.id_table = hil_ptr_ids,
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.connect = hil_ptr_connect,
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.disconnect = hil_ptr_disconnect,
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.interrupt = hil_ptr_interrupt
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};
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static int __init hil_ptr_init(void)
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{
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return serio_register_driver(&hil_ptr_serio_driver);
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}
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static void __exit hil_ptr_exit(void)
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{
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serio_unregister_driver(&hil_ptr_serio_driver);
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}
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module_init(hil_ptr_init);
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module_exit(hil_ptr_exit);
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