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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Driver for the remote control of SAA7146 based AV7110 cards
*
* Copyright (C) 1999-2003 Holger Waechtler <holger@convergence.de>
* Copyright (C) 2003-2007 Oliver Endriss <o.endriss@gmx.de>
*/
#include <linux/types.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/proc_fs.h>
#include <linux/kernel.h>
#include <linux/bitops.h>
#include "av7110.h"
#include "av7110_hw.h"
#define AV_CNT 4
#define IR_RC5 0
#define IR_RCMM 1
#define IR_RC5_EXT 2 /* internal only */
#define IR_ALL 0xffffffff
#define UP_TIMEOUT (HZ*7/25)
/* Note: enable ir debugging by or'ing debug with 16 */
static int ir_protocol[AV_CNT] = { IR_RCMM, IR_RCMM, IR_RCMM, IR_RCMM};
module_param_array(ir_protocol, int, NULL, 0644);
MODULE_PARM_DESC(ir_protocol, "Infrared protocol: 0 RC5, 1 RCMM (default)");
static int ir_inversion[AV_CNT];
module_param_array(ir_inversion, int, NULL, 0644);
MODULE_PARM_DESC(ir_inversion, "Inversion of infrared signal: 0 not inverted (default), 1 inverted");
static uint ir_device_mask[AV_CNT] = { IR_ALL, IR_ALL, IR_ALL, IR_ALL };
module_param_array(ir_device_mask, uint, NULL, 0644);
MODULE_PARM_DESC(ir_device_mask, "Bitmask of infrared devices: bit 0..31 = device 0..31 (default: all)");
static int av_cnt;
static struct av7110 *av_list[AV_CNT];
static u16 default_key_map [256] = {
KEY_0, KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, KEY_7,
KEY_8, KEY_9, KEY_BACK, 0, KEY_POWER, KEY_MUTE, 0, KEY_INFO,
KEY_VOLUMEUP, KEY_VOLUMEDOWN, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
KEY_CHANNELUP, KEY_CHANNELDOWN, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, KEY_TEXT, 0, 0, KEY_TV, 0, 0, 0, 0, 0, KEY_SETUP, 0, 0,
0, 0, 0, KEY_SUBTITLE, 0, 0, KEY_LANGUAGE, 0,
KEY_RADIO, 0, 0, 0, 0, KEY_EXIT, 0, 0,
KEY_UP, KEY_DOWN, KEY_LEFT, KEY_RIGHT, KEY_OK, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, KEY_RED, KEY_GREEN, KEY_YELLOW,
KEY_BLUE, 0, 0, 0, 0, 0, 0, 0, KEY_MENU, KEY_LIST, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, KEY_UP, KEY_UP, KEY_DOWN, KEY_DOWN,
0, 0, 0, 0, KEY_EPG, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, KEY_VCR
};
/* key-up timer */
static void av7110_emit_keyup(struct timer_list *t)
{
struct infrared *ir = from_timer(ir, t, keyup_timer);
if (!ir || !ir->keypressed)
return;
input_report_key(ir->input_dev, ir->last_key, 0);
input_sync(ir->input_dev);
ir->keypressed = false;
}
/* tasklet */
static void av7110_emit_key(unsigned long parm)
{
struct infrared *ir = (struct infrared *) parm;
u32 ircom = ir->ir_command;
u8 data;
u8 addr;
u16 toggle;
u16 keycode;
/* extract device address and data */
switch (ir->protocol) {
case IR_RC5: /* RC5: 5 bits device address, 6 bits data */
data = ircom & 0x3f;
addr = (ircom >> 6) & 0x1f;
toggle = ircom & 0x0800;
break;
case IR_RCMM: /* RCMM: ? bits device address, ? bits data */
data = ircom & 0xff;
addr = (ircom >> 8) & 0x1f;
toggle = ircom & 0x8000;
break;
case IR_RC5_EXT: /* extended RC5: 5 bits device address, 7 bits data */
data = ircom & 0x3f;
addr = (ircom >> 6) & 0x1f;
/* invert 7th data bit for backward compatibility with RC5 keymaps */
if (!(ircom & 0x1000))
data |= 0x40;
toggle = ircom & 0x0800;
break;
default:
printk("%s invalid protocol %x\n", __func__, ir->protocol);
return;
}
input_event(ir->input_dev, EV_MSC, MSC_RAW, (addr << 16) | data);
input_event(ir->input_dev, EV_MSC, MSC_SCAN, data);
keycode = ir->key_map[data];
dprintk(16, "%s: code %08x -> addr %i data 0x%02x -> keycode %i\n",
__func__, ircom, addr, data, keycode);
/* check device address */
if (!(ir->device_mask & (1 << addr)))
return;
if (!keycode) {
printk ("%s: code %08x -> addr %i data 0x%02x -> unknown key!\n",
__func__, ircom, addr, data);
return;
}
if (ir->keypressed &&
(ir->last_key != keycode || toggle != ir->last_toggle))
input_event(ir->input_dev, EV_KEY, ir->last_key, 0);
input_event(ir->input_dev, EV_KEY, keycode, 1);
input_sync(ir->input_dev);
ir->keypressed = true;
ir->last_key = keycode;
ir->last_toggle = toggle;
mod_timer(&ir->keyup_timer, jiffies + UP_TIMEOUT);
}
/* register with input layer */
static void input_register_keys(struct infrared *ir)
{
int i;
set_bit(EV_KEY, ir->input_dev->evbit);
set_bit(EV_REP, ir->input_dev->evbit);
set_bit(EV_MSC, ir->input_dev->evbit);
set_bit(MSC_RAW, ir->input_dev->mscbit);
set_bit(MSC_SCAN, ir->input_dev->mscbit);
memset(ir->input_dev->keybit, 0, sizeof(ir->input_dev->keybit));
for (i = 0; i < ARRAY_SIZE(ir->key_map); i++) {
if (ir->key_map[i] > KEY_MAX)
ir->key_map[i] = 0;
else if (ir->key_map[i] > KEY_RESERVED)
set_bit(ir->key_map[i], ir->input_dev->keybit);
}
ir->input_dev->keycode = ir->key_map;
ir->input_dev->keycodesize = sizeof(ir->key_map[0]);
ir->input_dev->keycodemax = ARRAY_SIZE(ir->key_map);
}
/* check for configuration changes */
int av7110_check_ir_config(struct av7110 *av7110, int force)
{
int i;
int modified = force;
int ret = -ENODEV;
for (i = 0; i < av_cnt; i++)
if (av7110 == av_list[i])
break;
if (i < av_cnt && av7110) {
if ((av7110->ir.protocol & 1) != ir_protocol[i] ||
av7110->ir.inversion != ir_inversion[i])
modified = true;
if (modified) {
/* protocol */
if (ir_protocol[i]) {
ir_protocol[i] = 1;
av7110->ir.protocol = IR_RCMM;
av7110->ir.ir_config = 0x0001;
} else if (FW_VERSION(av7110->arm_app) >= 0x2620) {
av7110->ir.protocol = IR_RC5_EXT;
av7110->ir.ir_config = 0x0002;
} else {
av7110->ir.protocol = IR_RC5;
av7110->ir.ir_config = 0x0000;
}
/* inversion */
if (ir_inversion[i]) {
ir_inversion[i] = 1;
av7110->ir.ir_config |= 0x8000;
}
av7110->ir.inversion = ir_inversion[i];
/* update ARM */
ret = av7110_fw_cmd(av7110, COMTYPE_PIDFILTER, SetIR, 1,
av7110->ir.ir_config);
} else
ret = 0;
/* address */
if (av7110->ir.device_mask != ir_device_mask[i])
av7110->ir.device_mask = ir_device_mask[i];
}
return ret;
}
/* /proc/av7110_ir interface */
static ssize_t av7110_ir_proc_write(struct file *file, const char __user *buffer,
size_t count, loff_t *pos)
{
char *page;
u32 ir_config;
int size = sizeof ir_config + sizeof av_list[0]->ir.key_map;
int i;
if (count < size)
return -EINVAL;
page = vmalloc(size);
if (!page)
return -ENOMEM;
if (copy_from_user(page, buffer, size)) {
vfree(page);
return -EFAULT;
}
memcpy(&ir_config, page, sizeof ir_config);
for (i = 0; i < av_cnt; i++) {
/* keymap */
memcpy(av_list[i]->ir.key_map, page + sizeof ir_config,
sizeof(av_list[i]->ir.key_map));
/* protocol, inversion, address */
ir_protocol[i] = ir_config & 0x0001;
ir_inversion[i] = ir_config & 0x8000 ? 1 : 0;
if (ir_config & 0x4000)
ir_device_mask[i] = 1 << ((ir_config >> 16) & 0x1f);
else
ir_device_mask[i] = IR_ALL;
/* update configuration */
av7110_check_ir_config(av_list[i], false);
input_register_keys(&av_list[i]->ir);
}
vfree(page);
return count;
}
static const struct file_operations av7110_ir_proc_fops = {
.owner = THIS_MODULE,
.write = av7110_ir_proc_write,
.llseek = noop_llseek,
};
/* interrupt handler */
static void ir_handler(struct av7110 *av7110, u32 ircom)
{
dprintk(4, "ir command = %08x\n", ircom);
av7110->ir.ir_command = ircom;
tasklet_schedule(&av7110->ir.ir_tasklet);
}
int av7110_ir_init(struct av7110 *av7110)
{
struct input_dev *input_dev;
static struct proc_dir_entry *e;
int err;
if (av_cnt >= ARRAY_SIZE(av_list))
return -ENOSPC;
av_list[av_cnt++] = av7110;
av7110_check_ir_config(av7110, true);
timer_setup(&av7110->ir.keyup_timer, av7110_emit_keyup, 0);
input_dev = input_allocate_device();
if (!input_dev)
return -ENOMEM;
av7110->ir.input_dev = input_dev;
snprintf(av7110->ir.input_phys, sizeof(av7110->ir.input_phys),
"pci-%s/ir0", pci_name(av7110->dev->pci));
input_dev->name = "DVB on-card IR receiver";
input_dev->phys = av7110->ir.input_phys;
input_dev->id.bustype = BUS_PCI;
input_dev->id.version = 2;
if (av7110->dev->pci->subsystem_vendor) {
input_dev->id.vendor = av7110->dev->pci->subsystem_vendor;
input_dev->id.product = av7110->dev->pci->subsystem_device;
} else {
input_dev->id.vendor = av7110->dev->pci->vendor;
input_dev->id.product = av7110->dev->pci->device;
}
input_dev->dev.parent = &av7110->dev->pci->dev;
/* initial keymap */
memcpy(av7110->ir.key_map, default_key_map, sizeof av7110->ir.key_map);
input_register_keys(&av7110->ir);
err = input_register_device(input_dev);
if (err) {
input_free_device(input_dev);
return err;
}
/*
* Input core's default autorepeat is 33 cps with 250 msec
* delay, let's adjust to numbers more suitable for remote
* control.
*/
input_enable_softrepeat(input_dev, 250, 125);
if (av_cnt == 1) {
e = proc_create("av7110_ir", S_IWUSR, NULL, &av7110_ir_proc_fops);
if (e)
proc_set_size(e, 4 + 256 * sizeof(u16));
}
tasklet_init(&av7110->ir.ir_tasklet, av7110_emit_key, (unsigned long) &av7110->ir);
av7110->ir.ir_handler = ir_handler;
return 0;
}
void av7110_ir_exit(struct av7110 *av7110)
{
int i;
if (av_cnt == 0)
return;
del_timer_sync(&av7110->ir.keyup_timer);
av7110->ir.ir_handler = NULL;
tasklet_kill(&av7110->ir.ir_tasklet);
for (i = 0; i < av_cnt; i++)
if (av_list[i] == av7110) {
av_list[i] = av_list[av_cnt-1];
av_list[av_cnt-1] = NULL;
break;
}
if (av_cnt == 1)
remove_proc_entry("av7110_ir", NULL);
input_unregister_device(av7110->ir.input_dev);
av_cnt--;
}
//MODULE_AUTHOR("Holger Waechtler <holger@convergence.de>, Oliver Endriss <o.endriss@gmx.de>");
//MODULE_LICENSE("GPL");
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