AuxXxilium/linux_dsm_epyc7002
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bcb63314e2
linux_dsm_epyc7002/drivers/media/i2c/ir-kbd-i2c.c
Sakari Ailus bcb63314e2 [media] media: Drop FSF's postal address from the source code files 
Drop the FSF's postal address from the source code files that typically
contain mostly the license text. Of the 628 removed instances, 578 are
outdated.

The patch has been created with the following command without manual edits:

git grep -l "675 Mass Ave\|59 Temple Place\|51 Franklin St" -- \
	drivers/media/ include/media|while read i; do i=$i perl -e '
open(F,"< $ENV{i}");
$a=join("", <F>);
$a =~ s/[ \t]*\*\n.*You should.*\n.*along with.*\n.*(\n.*USA.*$)?\n//m
	&& $a =~ s/(^.*)Or, (point your browser to) /$1To obtain the license, $2\n$1/m;
close(F);
open(F, "> $ENV{i}");
print F $a;
close(F);'; done

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
2017-01-27 11:38:09 -02:00

524 lines
13 KiB
C
Raw Blame History

/*
*
* keyboard input driver for i2c IR remote controls
*
* Copyright (c) 2000-2003 Gerd Knorr <kraxel@bytesex.org>
* modified for PixelView (BT878P+W/FM) by
* Michal Kochanowicz <mkochano@pld.org.pl>
* Christoph Bartelmus <lirc@bartelmus.de>
* modified for KNC ONE TV Station/Anubis Typhoon TView Tuner by
* Ulrich Mueller <ulrich.mueller42@web.de>
* modified for em2820 based USB TV tuners by
* Markus Rechberger <mrechberger@gmail.com>
* modified for DViCO Fusion HDTV 5 RT GOLD by
* Chaogui Zhang <czhang1974@gmail.com>
* modified for MSI TV@nywhere Plus by
* Henry Wong <henry@stuffedcow.net>
* Mark Schultz <n9xmj@yahoo.com>
* Brian Rogers <brian_rogers@comcast.net>
* modified for AVerMedia Cardbus by
* Oldrich Jedlicka <oldium.pro@seznam.cz>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <asm/unaligned.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/workqueue.h>
#include <media/rc-core.h>
#include <media/i2c/ir-kbd-i2c.h>
/* ----------------------------------------------------------------------- */
/* insmod parameters */
static int debug;
module_param(debug, int, 0644); /* debug level (0,1,2) */
#define MODULE_NAME "ir-kbd-i2c"
#define dprintk(level, fmt, arg...) if (debug >= level) \
printk(KERN_DEBUG MODULE_NAME ": " fmt , ## arg)
/* ----------------------------------------------------------------------- */
static int get_key_haup_common(struct IR_i2c *ir, enum rc_type *protocol,
u32 *scancode, u8 *ptoggle, int size)
{
unsigned char buf[6];
int start, range, toggle, dev, code, ircode, vendor;
/* poll IR chip */
if (size != i2c_master_recv(ir->c, buf, size))
return -EIO;
if (buf[0] & 0x80) {
int offset = (size == 6) ? 3 : 0;
/* split rc5 data block ... */
start = (buf[offset] >> 7) & 1;
range = (buf[offset] >> 6) & 1;
toggle = (buf[offset] >> 5) & 1;
dev = buf[offset] & 0x1f;
code = (buf[offset+1] >> 2) & 0x3f;
/* rc5 has two start bits
* the first bit must be one
* the second bit defines the command range:
* 1 = 0-63, 0 = 64 - 127
*/
if (!start)
/* no key pressed */
return 0;
/* filter out invalid key presses */
ircode = (start << 12) | (toggle << 11) | (dev << 6) | code;
if ((ircode & 0x1fff) == 0x1fff)
return 0;
if (!range)
code += 64;
dprintk(1, "ir hauppauge (rc5): s%d r%d t%d dev=%d code=%d\n",
start, range, toggle, dev, code);
*protocol = RC_TYPE_RC5;
*scancode = RC_SCANCODE_RC5(dev, code);
*ptoggle = toggle;
return 1;
} else if (size == 6 && (buf[0] & 0x40)) {
code = buf[4];
dev = buf[3];
vendor = get_unaligned_be16(buf + 1);
if (vendor == 0x800f) {
*ptoggle = (dev & 0x80) != 0;
*protocol = RC_TYPE_RC6_MCE;
dev &= 0x7f;
dprintk(1, "ir hauppauge (rc6-mce): t%d vendor=%d dev=%d code=%d\n",
*ptoggle, vendor, dev, code);
} else {
*ptoggle = 0;
*protocol = RC_TYPE_RC6_6A_32;
dprintk(1, "ir hauppauge (rc6-6a-32): vendor=%d dev=%d code=%d\n",
vendor, dev, code);
}
*scancode = RC_SCANCODE_RC6_6A(vendor, dev, code);
return 1;
}
return 0;
}
static int get_key_haup(struct IR_i2c *ir, enum rc_type *protocol,
u32 *scancode, u8 *toggle)
{
return get_key_haup_common(ir, protocol, scancode, toggle, 3);
}
static int get_key_haup_xvr(struct IR_i2c *ir, enum rc_type *protocol,
u32 *scancode, u8 *toggle)
{
int ret;
unsigned char buf[1] = { 0 };
/*
* This is the same apparent "are you ready?" poll command observed
* watching Windows driver traffic and implemented in lirc_zilog. With
* this added, we get far saner remote behavior with z8 chips on usb
* connected devices, even with the default polling interval of 100ms.
*/
ret = i2c_master_send(ir->c, buf, 1);
if (ret != 1)
return (ret < 0) ? ret : -EINVAL;
return get_key_haup_common(ir, protocol, scancode, toggle, 6);
}
static int get_key_pixelview(struct IR_i2c *ir, enum rc_type *protocol,
u32 *scancode, u8 *toggle)
{
unsigned char b;
/* poll IR chip */
if (1 != i2c_master_recv(ir->c, &b, 1)) {
dprintk(1,"read error\n");
return -EIO;
}
*protocol = RC_TYPE_OTHER;
*scancode = b;
*toggle = 0;
return 1;
}
static int get_key_fusionhdtv(struct IR_i2c *ir, enum rc_type *protocol,
u32 *scancode, u8 *toggle)
{
unsigned char buf[4];
/* poll IR chip */
if (4 != i2c_master_recv(ir->c, buf, 4)) {
dprintk(1,"read error\n");
return -EIO;
}
if(buf[0] !=0 || buf[1] !=0 || buf[2] !=0 || buf[3] != 0)
dprintk(2, "%s: 0x%2x 0x%2x 0x%2x 0x%2x\n", __func__,
buf[0], buf[1], buf[2], buf[3]);
/* no key pressed or signal from other ir remote */
if(buf[0] != 0x1 || buf[1] != 0xfe)
return 0;
*protocol = RC_TYPE_UNKNOWN;
*scancode = buf[2];
*toggle = 0;
return 1;
}
static int get_key_knc1(struct IR_i2c *ir, enum rc_type *protocol,
u32 *scancode, u8 *toggle)
{
unsigned char b;
/* poll IR chip */
if (1 != i2c_master_recv(ir->c, &b, 1)) {
dprintk(1,"read error\n");
return -EIO;
}
/* it seems that 0xFE indicates that a button is still hold
down, while 0xff indicates that no button is hold
down. 0xfe sequences are sometimes interrupted by 0xFF */
dprintk(2,"key %02x\n", b);
if (b == 0xff)
return 0;
if (b == 0xfe)
/* keep old data */
return 1;
*protocol = RC_TYPE_UNKNOWN;
*scancode = b;
*toggle = 0;
return 1;
}
static int get_key_avermedia_cardbus(struct IR_i2c *ir, enum rc_type *protocol,
u32 *scancode, u8 *toggle)
{
unsigned char subaddr, key, keygroup;
struct i2c_msg msg[] = { { .addr = ir->c->addr, .flags = 0,
.buf = &subaddr, .len = 1},
{ .addr = ir->c->addr, .flags = I2C_M_RD,
.buf = &key, .len = 1} };
subaddr = 0x0d;
if (2 != i2c_transfer(ir->c->adapter, msg, 2)) {
dprintk(1, "read error\n");
return -EIO;
}
if (key == 0xff)
return 0;
subaddr = 0x0b;
msg[1].buf = &keygroup;
if (2 != i2c_transfer(ir->c->adapter, msg, 2)) {
dprintk(1, "read error\n");
return -EIO;
}
if (keygroup == 0xff)
return 0;
dprintk(1, "read key 0x%02x/0x%02x\n", key, keygroup);
if (keygroup < 2 || keygroup > 4) {
/* Only a warning */
dprintk(1, "warning: invalid key group 0x%02x for key 0x%02x\n",
keygroup, key);
}
key |= (keygroup & 1) << 6;
*protocol = RC_TYPE_UNKNOWN;
*scancode = key;
if (ir->c->addr == 0x41) /* AVerMedia EM78P153 */
*scancode |= keygroup << 8;
*toggle = 0;
return 1;
}
/* ----------------------------------------------------------------------- */
static int ir_key_poll(struct IR_i2c *ir)
{
enum rc_type protocol;
u32 scancode;
u8 toggle;
int rc;
dprintk(3, "%s\n", __func__);
rc = ir->get_key(ir, &protocol, &scancode, &toggle);
if (rc < 0) {
dprintk(2,"error\n");
return rc;
}
if (rc) {
dprintk(1, "%s: proto = 0x%04x, scancode = 0x%08x\n",
__func__, protocol, scancode);
rc_keydown(ir->rc, protocol, scancode, toggle);
}
return 0;
}
static void ir_work(struct work_struct *work)
{
int rc;
struct IR_i2c *ir = container_of(work, struct IR_i2c, work.work);
rc = ir_key_poll(ir);
if (rc == -ENODEV) {
rc_unregister_device(ir->rc);
ir->rc = NULL;
return;
}
schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling_interval));
}
/* ----------------------------------------------------------------------- */
static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
char *ir_codes = NULL;
const char *name = NULL;
u64 rc_type = RC_BIT_UNKNOWN;
struct IR_i2c *ir;
struct rc_dev *rc = NULL;
struct i2c_adapter *adap = client->adapter;
unsigned short addr = client->addr;
int err;
ir = devm_kzalloc(&client->dev, sizeof(*ir), GFP_KERNEL);
if (!ir)
return -ENOMEM;
ir->c = client;
ir->polling_interval = DEFAULT_POLLING_INTERVAL;
i2c_set_clientdata(client, ir);
switch(addr) {
case 0x64:
name = "Pixelview";
ir->get_key = get_key_pixelview;
rc_type = RC_BIT_OTHER;
ir_codes = RC_MAP_EMPTY;
break;
case 0x18:
case 0x1f:
case 0x1a:
name = "Hauppauge";
ir->get_key = get_key_haup;
rc_type = RC_BIT_RC5;
ir_codes = RC_MAP_HAUPPAUGE;
break;
case 0x30:
name = "KNC One";
ir->get_key = get_key_knc1;
rc_type = RC_BIT_OTHER;
ir_codes = RC_MAP_EMPTY;
break;
case 0x6b:
name = "FusionHDTV";
ir->get_key = get_key_fusionhdtv;
rc_type = RC_BIT_UNKNOWN;
ir_codes = RC_MAP_FUSIONHDTV_MCE;
break;
case 0x40:
name = "AVerMedia Cardbus remote";
ir->get_key = get_key_avermedia_cardbus;
rc_type = RC_BIT_OTHER;
ir_codes = RC_MAP_AVERMEDIA_CARDBUS;
break;
case 0x41:
name = "AVerMedia EM78P153";
ir->get_key = get_key_avermedia_cardbus;
rc_type = RC_BIT_OTHER;
/* RM-KV remote, seems to be same as RM-K6 */
ir_codes = RC_MAP_AVERMEDIA_M733A_RM_K6;
break;
case 0x71:
name = "Hauppauge/Zilog Z8";
ir->get_key = get_key_haup_xvr;
rc_type = RC_BIT_RC5 | RC_BIT_RC6_MCE | RC_BIT_RC6_6A_32;
ir_codes = RC_MAP_HAUPPAUGE;
break;
}
/* Let the caller override settings */
if (client->dev.platform_data) {
const struct IR_i2c_init_data *init_data =
client->dev.platform_data;
ir_codes = init_data->ir_codes;
rc = init_data->rc_dev;
name = init_data->name;
if (init_data->type)
rc_type = init_data->type;
if (init_data->polling_interval)
ir->polling_interval = init_data->polling_interval;
switch (init_data->internal_get_key_func) {
case IR_KBD_GET_KEY_CUSTOM:
/* The bridge driver provided us its own function */
ir->get_key = init_data->get_key;
break;
case IR_KBD_GET_KEY_PIXELVIEW:
ir->get_key = get_key_pixelview;
break;
case IR_KBD_GET_KEY_HAUP:
ir->get_key = get_key_haup;
break;
case IR_KBD_GET_KEY_KNC1:
ir->get_key = get_key_knc1;
break;
case IR_KBD_GET_KEY_FUSIONHDTV:
ir->get_key = get_key_fusionhdtv;
break;
case IR_KBD_GET_KEY_HAUP_XVR:
ir->get_key = get_key_haup_xvr;
break;
case IR_KBD_GET_KEY_AVERMEDIA_CARDBUS:
ir->get_key = get_key_avermedia_cardbus;
break;
}
}
if (!rc) {
/*
* If platform_data doesn't specify rc_dev, initialize it
* internally
*/
rc = rc_allocate_device();
if (!rc)
return -ENOMEM;
}
ir->rc = rc;
/* Make sure we are all setup before going on */
if (!name || !ir->get_key || !rc_type || !ir_codes) {
dprintk(1, ": Unsupported device at address 0x%02x\n",
addr);
err = -ENODEV;
goto err_out_free;
}
/* Sets name */
snprintf(ir->name, sizeof(ir->name), "i2c IR (%s)", name);
ir->ir_codes = ir_codes;
snprintf(ir->phys, sizeof(ir->phys), "%s/%s/ir0",
dev_name(&adap->dev),
dev_name(&client->dev));
/*
* Initialize input_dev fields
* It doesn't make sense to allow overriding them via platform_data
*/
rc->input_id.bustype = BUS_I2C;
rc->input_phys = ir->phys;
rc->input_name = ir->name;
/*
* Initialize the other fields of rc_dev
*/
rc->map_name = ir->ir_codes;
rc->allowed_protocols = rc_type;
rc->enabled_protocols = rc_type;
if (!rc->driver_name)
rc->driver_name = MODULE_NAME;
err = rc_register_device(rc);
if (err)
goto err_out_free;
printk(MODULE_NAME ": %s detected at %s [%s]\n",
ir->name, ir->phys, adap->name);
/* start polling via eventd */
INIT_DELAYED_WORK(&ir->work, ir_work);
schedule_delayed_work(&ir->work, 0);
return 0;
err_out_free:
/* Only frees rc if it were allocated internally */
rc_free_device(rc);
return err;
}
static int ir_remove(struct i2c_client *client)
{
struct IR_i2c *ir = i2c_get_clientdata(client);
/* kill outstanding polls */
cancel_delayed_work_sync(&ir->work);
/* unregister device */
rc_unregister_device(ir->rc);
/* free memory */
return 0;
}
static const struct i2c_device_id ir_kbd_id[] = {
/* Generic entry for any IR receiver */
{ "ir_video", 0 },
/* IR device specific entries should be added here */
{ "ir_rx_z8f0811_haup", 0 },
{ "ir_rx_z8f0811_hdpvr", 0 },
{ }
};
static struct i2c_driver ir_kbd_driver = {
.driver = {
.name = "ir-kbd-i2c",
},
.probe = ir_probe,
.remove = ir_remove,
.id_table = ir_kbd_id,
};
module_i2c_driver(ir_kbd_driver);
/* ----------------------------------------------------------------------- */
MODULE_AUTHOR("Gerd Knorr, Michal Kochanowicz, Christoph Bartelmus, Ulrich Mueller");
MODULE_DESCRIPTION("input driver for i2c IR remote controls");
MODULE_LICENSE("GPL");
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