394 строки
10 KiB
C
394 строки
10 KiB
C
/*
|
|
* Generic linux-input device driver for keyboard devices
|
|
*
|
|
* Copyright (c) 2001 Brian S. Julin
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions, and the following disclaimer,
|
|
* without modification.
|
|
* 2. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
* GNU General Public License ("GPL").
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
|
|
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
*
|
|
* References:
|
|
* HP-HIL Technical Reference Manual. Hewlett Packard Product No. 45918A
|
|
*
|
|
*/
|
|
|
|
#include <linux/hil.h>
|
|
#include <linux/input.h>
|
|
#include <linux/serio.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/pci_ids.h>
|
|
|
|
#define PREFIX "HIL KEYB: "
|
|
#define HIL_GENERIC_NAME "HIL keyboard"
|
|
|
|
MODULE_AUTHOR("Brian S. Julin <bri@calyx.com>");
|
|
MODULE_DESCRIPTION(HIL_GENERIC_NAME " driver");
|
|
MODULE_LICENSE("Dual BSD/GPL");
|
|
|
|
#define HIL_KBD_MAX_LENGTH 16
|
|
|
|
#define HIL_KBD_SET1_UPBIT 0x01
|
|
#define HIL_KBD_SET1_SHIFT 1
|
|
static unsigned int hil_kbd_set1[HIL_KEYCODES_SET1_TBLSIZE] =
|
|
{ HIL_KEYCODES_SET1 };
|
|
|
|
#define HIL_KBD_SET2_UPBIT 0x01
|
|
#define HIL_KBD_SET2_SHIFT 1
|
|
/* Set2 is user defined */
|
|
|
|
#define HIL_KBD_SET3_UPBIT 0x80
|
|
#define HIL_KBD_SET3_SHIFT 0
|
|
static unsigned int hil_kbd_set3[HIL_KEYCODES_SET3_TBLSIZE] =
|
|
{ HIL_KEYCODES_SET3 };
|
|
|
|
static char hil_language[][16] = { HIL_LOCALE_MAP };
|
|
|
|
struct hil_kbd {
|
|
struct input_dev *dev;
|
|
struct serio *serio;
|
|
|
|
/* Input buffer and index for packets from HIL bus. */
|
|
hil_packet data[HIL_KBD_MAX_LENGTH];
|
|
int idx4; /* four counts per packet */
|
|
|
|
/* Raw device info records from HIL bus, see hil.h for fields. */
|
|
char idd[HIL_KBD_MAX_LENGTH]; /* DID byte and IDD record */
|
|
char rsc[HIL_KBD_MAX_LENGTH]; /* RSC record */
|
|
char exd[HIL_KBD_MAX_LENGTH]; /* EXD record */
|
|
char rnm[HIL_KBD_MAX_LENGTH + 1]; /* RNM record + NULL term. */
|
|
|
|
/* Something to sleep around with. */
|
|
struct semaphore sem;
|
|
};
|
|
|
|
/* Process a complete packet after transfer from the HIL */
|
|
static void hil_kbd_process_record(struct hil_kbd *kbd)
|
|
{
|
|
struct input_dev *dev = kbd->dev;
|
|
hil_packet *data = kbd->data;
|
|
hil_packet p;
|
|
int idx, i, cnt;
|
|
|
|
idx = kbd->idx4/4;
|
|
p = data[idx - 1];
|
|
|
|
if ((p & ~HIL_CMDCT_POL) ==
|
|
(HIL_ERR_INT | HIL_PKT_CMD | HIL_CMD_POL)) goto report;
|
|
if ((p & ~HIL_CMDCT_RPL) ==
|
|
(HIL_ERR_INT | HIL_PKT_CMD | HIL_CMD_RPL)) goto report;
|
|
|
|
/* Not a poll response. See if we are loading config records. */
|
|
switch (p & HIL_PKT_DATA_MASK) {
|
|
case HIL_CMD_IDD:
|
|
for (i = 0; i < idx; i++)
|
|
kbd->idd[i] = kbd->data[i] & HIL_PKT_DATA_MASK;
|
|
for (; i < HIL_KBD_MAX_LENGTH; i++)
|
|
kbd->idd[i] = 0;
|
|
break;
|
|
case HIL_CMD_RSC:
|
|
for (i = 0; i < idx; i++)
|
|
kbd->rsc[i] = kbd->data[i] & HIL_PKT_DATA_MASK;
|
|
for (; i < HIL_KBD_MAX_LENGTH; i++)
|
|
kbd->rsc[i] = 0;
|
|
break;
|
|
case HIL_CMD_EXD:
|
|
for (i = 0; i < idx; i++)
|
|
kbd->exd[i] = kbd->data[i] & HIL_PKT_DATA_MASK;
|
|
for (; i < HIL_KBD_MAX_LENGTH; i++)
|
|
kbd->exd[i] = 0;
|
|
break;
|
|
case HIL_CMD_RNM:
|
|
for (i = 0; i < idx; i++)
|
|
kbd->rnm[i] = kbd->data[i] & HIL_PKT_DATA_MASK;
|
|
for (; i < HIL_KBD_MAX_LENGTH + 1; i++)
|
|
kbd->rnm[i] = '\0';
|
|
break;
|
|
default:
|
|
/* These occur when device isn't present */
|
|
if (p == (HIL_ERR_INT | HIL_PKT_CMD)) break;
|
|
/* Anything else we'd like to know about. */
|
|
printk(KERN_WARNING PREFIX "Device sent unknown record %x\n", p);
|
|
break;
|
|
}
|
|
goto out;
|
|
|
|
report:
|
|
cnt = 1;
|
|
switch (kbd->data[0] & HIL_POL_CHARTYPE_MASK) {
|
|
case HIL_POL_CHARTYPE_NONE:
|
|
break;
|
|
case HIL_POL_CHARTYPE_ASCII:
|
|
while (cnt < idx - 1)
|
|
input_report_key(dev, kbd->data[cnt++] & 0x7f, 1);
|
|
break;
|
|
case HIL_POL_CHARTYPE_RSVD1:
|
|
case HIL_POL_CHARTYPE_RSVD2:
|
|
case HIL_POL_CHARTYPE_BINARY:
|
|
while (cnt < idx - 1)
|
|
input_report_key(dev, kbd->data[cnt++], 1);
|
|
break;
|
|
case HIL_POL_CHARTYPE_SET1:
|
|
while (cnt < idx - 1) {
|
|
unsigned int key;
|
|
int up;
|
|
key = kbd->data[cnt++];
|
|
up = key & HIL_KBD_SET1_UPBIT;
|
|
key &= (~HIL_KBD_SET1_UPBIT & 0xff);
|
|
key = hil_kbd_set1[key >> HIL_KBD_SET1_SHIFT];
|
|
if (key != KEY_RESERVED)
|
|
input_report_key(dev, key, !up);
|
|
}
|
|
break;
|
|
case HIL_POL_CHARTYPE_SET2:
|
|
while (cnt < idx - 1) {
|
|
unsigned int key;
|
|
int up;
|
|
key = kbd->data[cnt++];
|
|
up = key & HIL_KBD_SET2_UPBIT;
|
|
key &= (~HIL_KBD_SET1_UPBIT & 0xff);
|
|
key = key >> HIL_KBD_SET2_SHIFT;
|
|
if (key != KEY_RESERVED)
|
|
input_report_key(dev, key, !up);
|
|
}
|
|
break;
|
|
case HIL_POL_CHARTYPE_SET3:
|
|
while (cnt < idx - 1) {
|
|
unsigned int key;
|
|
int up;
|
|
key = kbd->data[cnt++];
|
|
up = key & HIL_KBD_SET3_UPBIT;
|
|
key &= (~HIL_KBD_SET1_UPBIT & 0xff);
|
|
key = hil_kbd_set3[key >> HIL_KBD_SET3_SHIFT];
|
|
if (key != KEY_RESERVED)
|
|
input_report_key(dev, key, !up);
|
|
}
|
|
break;
|
|
}
|
|
out:
|
|
kbd->idx4 = 0;
|
|
up(&kbd->sem);
|
|
}
|
|
|
|
static void hil_kbd_process_err(struct hil_kbd *kbd) {
|
|
printk(KERN_WARNING PREFIX "errored HIL packet\n");
|
|
kbd->idx4 = 0;
|
|
up(&kbd->sem);
|
|
}
|
|
|
|
static irqreturn_t hil_kbd_interrupt(struct serio *serio,
|
|
unsigned char data, unsigned int flags)
|
|
{
|
|
struct hil_kbd *kbd;
|
|
hil_packet packet;
|
|
int idx;
|
|
|
|
kbd = serio_get_drvdata(serio);
|
|
if (kbd == NULL) {
|
|
BUG();
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
if (kbd->idx4 >= (HIL_KBD_MAX_LENGTH * sizeof(hil_packet))) {
|
|
hil_kbd_process_err(kbd);
|
|
return IRQ_HANDLED;
|
|
}
|
|
idx = kbd->idx4/4;
|
|
if (!(kbd->idx4 % 4)) kbd->data[idx] = 0;
|
|
packet = kbd->data[idx];
|
|
packet |= ((hil_packet)data) << ((3 - (kbd->idx4 % 4)) * 8);
|
|
kbd->data[idx] = packet;
|
|
|
|
/* Records of N 4-byte hil_packets must terminate with a command. */
|
|
if ((++(kbd->idx4)) % 4) return IRQ_HANDLED;
|
|
if ((packet & 0xffff0000) != HIL_ERR_INT) {
|
|
hil_kbd_process_err(kbd);
|
|
return IRQ_HANDLED;
|
|
}
|
|
if (packet & HIL_PKT_CMD) hil_kbd_process_record(kbd);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void hil_kbd_disconnect(struct serio *serio)
|
|
{
|
|
struct hil_kbd *kbd;
|
|
|
|
kbd = serio_get_drvdata(serio);
|
|
if (kbd == NULL) {
|
|
BUG();
|
|
return;
|
|
}
|
|
|
|
serio_close(serio);
|
|
input_unregister_device(kbd->dev);
|
|
kfree(kbd);
|
|
}
|
|
|
|
static int hil_kbd_connect(struct serio *serio, struct serio_driver *drv)
|
|
{
|
|
struct hil_kbd *kbd;
|
|
uint8_t did, *idd;
|
|
int i;
|
|
|
|
kbd = kzalloc(sizeof(*kbd), GFP_KERNEL);
|
|
if (!kbd)
|
|
return -ENOMEM;
|
|
|
|
kbd->dev = input_allocate_device();
|
|
if (!kbd->dev)
|
|
goto bail0;
|
|
|
|
kbd->dev->private = kbd;
|
|
|
|
if (serio_open(serio, drv))
|
|
goto bail1;
|
|
|
|
serio_set_drvdata(serio, kbd);
|
|
kbd->serio = serio;
|
|
|
|
init_MUTEX_LOCKED(&(kbd->sem));
|
|
|
|
/* Get device info. MLC driver supplies devid/status/etc. */
|
|
serio->write(serio, 0);
|
|
serio->write(serio, 0);
|
|
serio->write(serio, HIL_PKT_CMD >> 8);
|
|
serio->write(serio, HIL_CMD_IDD);
|
|
down(&(kbd->sem));
|
|
|
|
serio->write(serio, 0);
|
|
serio->write(serio, 0);
|
|
serio->write(serio, HIL_PKT_CMD >> 8);
|
|
serio->write(serio, HIL_CMD_RSC);
|
|
down(&(kbd->sem));
|
|
|
|
serio->write(serio, 0);
|
|
serio->write(serio, 0);
|
|
serio->write(serio, HIL_PKT_CMD >> 8);
|
|
serio->write(serio, HIL_CMD_RNM);
|
|
down(&(kbd->sem));
|
|
|
|
serio->write(serio, 0);
|
|
serio->write(serio, 0);
|
|
serio->write(serio, HIL_PKT_CMD >> 8);
|
|
serio->write(serio, HIL_CMD_EXD);
|
|
down(&(kbd->sem));
|
|
|
|
up(&(kbd->sem));
|
|
|
|
did = kbd->idd[0];
|
|
idd = kbd->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:
|
|
printk(KERN_INFO PREFIX "HIL keyboard found (did = 0x%02x, lang = %s)\n",
|
|
did, hil_language[did & HIL_IDD_DID_TYPE_KB_LANG_MASK]);
|
|
break;
|
|
default:
|
|
goto bail2;
|
|
}
|
|
|
|
if(HIL_IDD_NUM_BUTTONS(idd) || HIL_IDD_NUM_AXES_PER_SET(*idd)) {
|
|
printk(KERN_INFO PREFIX "keyboards only, no combo devices supported.\n");
|
|
goto bail2;
|
|
}
|
|
|
|
|
|
kbd->dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
|
|
kbd->dev->ledbit[0] = BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL);
|
|
kbd->dev->keycodemax = HIL_KEYCODES_SET1_TBLSIZE;
|
|
kbd->dev->keycodesize = sizeof(hil_kbd_set1[0]);
|
|
kbd->dev->keycode = hil_kbd_set1;
|
|
kbd->dev->name = strlen(kbd->rnm) ? kbd->rnm : HIL_GENERIC_NAME;
|
|
kbd->dev->phys = "hpkbd/input0"; /* XXX */
|
|
|
|
kbd->dev->id.bustype = BUS_HIL;
|
|
kbd->dev->id.vendor = PCI_VENDOR_ID_HP;
|
|
kbd->dev->id.product = 0x0001; /* TODO: get from kbd->rsc */
|
|
kbd->dev->id.version = 0x0100; /* TODO: get from kbd->rsc */
|
|
kbd->dev->cdev.dev = &serio->dev;
|
|
|
|
for (i = 0; i < 128; i++) {
|
|
set_bit(hil_kbd_set1[i], kbd->dev->keybit);
|
|
set_bit(hil_kbd_set3[i], kbd->dev->keybit);
|
|
}
|
|
clear_bit(0, kbd->dev->keybit);
|
|
|
|
input_register_device(kbd->dev);
|
|
printk(KERN_INFO "input: %s, ID: %d\n",
|
|
kbd->dev->name, did);
|
|
|
|
serio->write(serio, 0);
|
|
serio->write(serio, 0);
|
|
serio->write(serio, HIL_PKT_CMD >> 8);
|
|
serio->write(serio, HIL_CMD_EK1); /* Enable Keyswitch Autorepeat 1 */
|
|
down(&(kbd->sem));
|
|
up(&(kbd->sem));
|
|
|
|
return 0;
|
|
bail2:
|
|
serio_close(serio);
|
|
serio_set_drvdata(serio, NULL);
|
|
bail1:
|
|
input_free_device(kbd->dev);
|
|
bail0:
|
|
kfree(kbd);
|
|
return -EIO;
|
|
}
|
|
|
|
static struct serio_device_id hil_kbd_ids[] = {
|
|
{
|
|
.type = SERIO_HIL_MLC,
|
|
.proto = SERIO_HIL,
|
|
.id = SERIO_ANY,
|
|
.extra = SERIO_ANY,
|
|
},
|
|
{ 0 }
|
|
};
|
|
|
|
struct serio_driver hil_kbd_serio_drv = {
|
|
.driver = {
|
|
.name = "hil_kbd",
|
|
},
|
|
.description = "HP HIL keyboard driver",
|
|
.id_table = hil_kbd_ids,
|
|
.connect = hil_kbd_connect,
|
|
.disconnect = hil_kbd_disconnect,
|
|
.interrupt = hil_kbd_interrupt
|
|
};
|
|
|
|
static int __init hil_kbd_init(void)
|
|
{
|
|
return serio_register_driver(&hil_kbd_serio_drv);
|
|
}
|
|
|
|
static void __exit hil_kbd_exit(void)
|
|
{
|
|
serio_unregister_driver(&hil_kbd_serio_drv);
|
|
}
|
|
|
|
module_init(hil_kbd_init);
|
|
module_exit(hil_kbd_exit);
|