// SPDX-License-Identifier: GPL-2.0-only
/* Common methods for dibusb-based-receivers.
*
* Copyright ( C ) 2004 - 5 Patrick Boettcher ( patrick . boettcher @ posteo . de )
*
* see Documentation / driver - api / media / drivers / dvb - usb . rst for more information
*/
#include "dibusb.h"
/* Max transfer size done by I2C transfer functions */
#define MAX_XFER_SIZE 64
static int debug;
module_param(debug, int , 0644 );
MODULE_PARM_DESC(debug, "set debugging level (1=info (|-able))." DVB_USB_DEBUG_STATUS);
MODULE_DESCRIPTION("Common methods for dibusb-based receivers" );
MODULE_LICENSE("GPL" );
#define deb_info(args...) dprintk(debug,0 x01,args)
/* common stuff used by the different dibusb modules */
int dibusb_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
{
if (adap->priv != NULL) {
struct dibusb_state *st = adap->priv;
if (st->ops.fifo_ctrl != NULL)
if (st->ops.fifo_ctrl(adap->fe_adap[0 ].fe, onoff)) {
err("error while controlling the fifo of the demod." );
return -ENODEV;
}
}
return 0 ;
}
EXPORT_SYMBOL(dibusb_streaming_ctrl);
int dibusb_pid_filter(struct dvb_usb_adapter *adap, int index, u16 pid, int onoff)
{
if (adap->priv != NULL) {
struct dibusb_state *st = adap->priv;
if (st->ops.pid_ctrl != NULL)
st->ops.pid_ctrl(adap->fe_adap[0 ].fe,
index, pid, onoff);
}
return 0 ;
}
EXPORT_SYMBOL(dibusb_pid_filter);
int dibusb_pid_filter_ctrl(struct dvb_usb_adapter *adap, int onoff)
{
if (adap->priv != NULL) {
struct dibusb_state *st = adap->priv;
if (st->ops.pid_parse != NULL)
if (st->ops.pid_parse(adap->fe_adap[0 ].fe, onoff) < 0 )
err("could not handle pid_parser" );
}
return 0 ;
}
EXPORT_SYMBOL(dibusb_pid_filter_ctrl);
int dibusb_power_ctrl(struct dvb_usb_device *d, int onoff)
{
u8 *b;
int ret;
b = kmalloc(3 , GFP_KERNEL);
if (!b)
return -ENOMEM;
b[0 ] = DIBUSB_REQ_SET_IOCTL;
b[1 ] = DIBUSB_IOCTL_CMD_POWER_MODE;
b[2 ] = onoff ? DIBUSB_IOCTL_POWER_WAKEUP : DIBUSB_IOCTL_POWER_SLEEP;
ret = dvb_usb_generic_write(d, b, 3 );
kfree(b);
msleep(10 );
return ret;
}
EXPORT_SYMBOL(dibusb_power_ctrl);
int dibusb2_0_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
{
int ret;
u8 *b;
b = kmalloc(3 , GFP_KERNEL);
if (!b)
return -ENOMEM;
if ((ret = dibusb_streaming_ctrl(adap,onoff)) < 0 )
goto ret;
if (onoff) {
b[0 ] = DIBUSB_REQ_SET_STREAMING_MODE;
b[1 ] = 0 x00;
ret = dvb_usb_generic_write(adap->dev, b, 2 );
if (ret < 0 )
goto ret;
}
b[0 ] = DIBUSB_REQ_SET_IOCTL;
b[1 ] = onoff ? DIBUSB_IOCTL_CMD_ENABLE_STREAM : DIBUSB_IOCTL_CMD_DISABLE_STREAM;
ret = dvb_usb_generic_write(adap->dev, b, 3 );
ret:
kfree(b);
return ret;
}
EXPORT_SYMBOL(dibusb2_0_streaming_ctrl);
int dibusb2_0_power_ctrl(struct dvb_usb_device *d, int onoff)
{
u8 *b;
int ret;
if (!onoff)
return 0 ;
b = kmalloc(3 , GFP_KERNEL);
if (!b)
return -ENOMEM;
b[0 ] = DIBUSB_REQ_SET_IOCTL;
b[1 ] = DIBUSB_IOCTL_CMD_POWER_MODE;
b[2 ] = DIBUSB_IOCTL_POWER_WAKEUP;
ret = dvb_usb_generic_write(d, b, 3 );
kfree(b);
return ret;
}
EXPORT_SYMBOL(dibusb2_0_power_ctrl);
static int dibusb_i2c_msg(struct dvb_usb_device *d, u8 addr,
u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
{
u8 *sndbuf;
int ret, wo, len;
/* write only ? */
wo = (rbuf == NULL || rlen == 0 );
len = 2 + wlen + (wo ? 0 : 2 );
sndbuf = kmalloc(MAX_XFER_SIZE, GFP_KERNEL);
if (!sndbuf)
return -ENOMEM;
if (4 + wlen > MAX_XFER_SIZE) {
warn("i2c wr: len=%d is too big!\n" , wlen);
ret = -EOPNOTSUPP;
goto ret;
}
sndbuf[0 ] = wo ? DIBUSB_REQ_I2C_WRITE : DIBUSB_REQ_I2C_READ;
sndbuf[1 ] = (addr << 1 ) | (wo ? 0 : 1 );
memcpy(&sndbuf[2 ], wbuf, wlen);
if (!wo) {
sndbuf[wlen + 2 ] = (rlen >> 8 ) & 0 xff;
sndbuf[wlen + 3 ] = rlen & 0 xff;
}
ret = dvb_usb_generic_rw(d, sndbuf, len, rbuf, rlen, 0 );
ret:
kfree(sndbuf);
return ret;
}
/*
* I2C master xfer function
*/
static int dibusb_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num)
{
struct dvb_usb_device *d = i2c_get_adapdata(adap);
int i;
if (mutex_lock_interruptible(&d->i2c_mutex) < 0 )
return -EAGAIN;
for (i = 0 ; i < num; i++) {
/* write/read request */
if (i+1 < num && (msg[i].flags & I2C_M_RD) == 0
&& (msg[i+1 ].flags & I2C_M_RD)) {
if (dibusb_i2c_msg(d, msg[i].addr, msg[i].buf,msg[i].len,
msg[i+1 ].buf,msg[i+1 ].len) < 0 )
break ;
i++;
} else if ((msg[i].flags & I2C_M_RD) == 0 ) {
if (dibusb_i2c_msg(d, msg[i].addr, msg[i].buf,msg[i].len,NULL,0 ) < 0 )
break ;
} else if (msg[i].addr != 0 x50) {
/* 0x50 is the address of the eeprom - we need to protect it
* from dibusb ' s bad i2c implementation : reads without
* writing the offset before are forbidden */
if (dibusb_i2c_msg(d, msg[i].addr, NULL, 0 , msg[i].buf, msg[i].len) < 0 )
break ;
}
}
mutex_unlock(&d->i2c_mutex);
return i;
}
static u32 dibusb_i2c_func(struct i2c_adapter *adapter)
{
return I2C_FUNC_I2C;
}
struct i2c_algorithm dibusb_i2c_algo = {
.master_xfer = dibusb_i2c_xfer,
.functionality = dibusb_i2c_func,
};
EXPORT_SYMBOL(dibusb_i2c_algo);
int dibusb_read_eeprom_byte(struct dvb_usb_device *d, u8 offs, u8 *val)
{
u8 *buf;
int rc;
buf = kzalloc(2 , GFP_KERNEL);
if (!buf)
return -ENOMEM;
buf[0 ] = offs;
rc = dibusb_i2c_msg(d, 0 x50, &buf[0 ], 1 , &buf[1 ], 1 );
*val = buf[1 ];
kfree(buf);
return rc;
}
EXPORT_SYMBOL(dibusb_read_eeprom_byte);
/*
* common remote control stuff
*/
struct rc_map_table rc_map_dibusb_table[] = {
/* Key codes for the little Artec T1/Twinhan/HAMA/ remote. */
{ 0 x0016, KEY_POWER },
{ 0 x0010, KEY_MUTE },
{ 0 x0003, KEY_1 },
{ 0 x0001, KEY_2 },
{ 0 x0006, KEY_3 },
{ 0 x0009, KEY_4 },
{ 0 x001d, KEY_5 },
{ 0 x001f, KEY_6 },
{ 0 x000d, KEY_7 },
{ 0 x0019, KEY_8 },
{ 0 x001b, KEY_9 },
{ 0 x0015, KEY_0 },
{ 0 x0005, KEY_CHANNELUP },
{ 0 x0002, KEY_CHANNELDOWN },
{ 0 x001e, KEY_VOLUMEUP },
{ 0 x000a, KEY_VOLUMEDOWN },
{ 0 x0011, KEY_RECORD },
{ 0 x0017, KEY_FAVORITES }, /* Heart symbol - Channel list. */
{ 0 x0014, KEY_PLAY },
{ 0 x001a, KEY_STOP },
{ 0 x0040, KEY_REWIND },
{ 0 x0012, KEY_FASTFORWARD },
{ 0 x000e, KEY_PREVIOUS }, /* Recall - Previous channel. */
{ 0 x004c, KEY_PAUSE },
{ 0 x004d, KEY_SCREEN }, /* Full screen mode. */
{ 0 x0054, KEY_AUDIO }, /* MTS - Switch to secondary audio. */
/* additional keys TwinHan VisionPlus, the Artec seemingly not have */
{ 0 x000c, KEY_CANCEL }, /* Cancel */
{ 0 x001c, KEY_EPG }, /* EPG */
{ 0 x0000, KEY_TAB }, /* Tab */
{ 0 x0048, KEY_INFO }, /* Preview */
{ 0 x0004, KEY_LIST }, /* RecordList */
{ 0 x000f, KEY_TEXT }, /* Teletext */
/* Key codes for the KWorld/ADSTech/JetWay remote. */
{ 0 x8612, KEY_POWER },
{ 0 x860f, KEY_SELECT }, /* source */
{ 0 x860c, KEY_UNKNOWN }, /* scan */
{ 0 x860b, KEY_EPG },
{ 0 x8610, KEY_MUTE },
{ 0 x8601, KEY_1 },
{ 0 x8602, KEY_2 },
{ 0 x8603, KEY_3 },
{ 0 x8604, KEY_4 },
{ 0 x8605, KEY_5 },
{ 0 x8606, KEY_6 },
{ 0 x8607, KEY_7 },
{ 0 x8608, KEY_8 },
{ 0 x8609, KEY_9 },
{ 0 x860a, KEY_0 },
{ 0 x8618, KEY_ZOOM },
{ 0 x861c, KEY_UNKNOWN }, /* preview */
{ 0 x8613, KEY_UNKNOWN }, /* snap */
{ 0 x8600, KEY_UNDO },
{ 0 x861d, KEY_RECORD },
{ 0 x860d, KEY_STOP },
{ 0 x860e, KEY_PAUSE },
{ 0 x8616, KEY_PLAY },
{ 0 x8611, KEY_BACK },
{ 0 x8619, KEY_FORWARD },
{ 0 x8614, KEY_UNKNOWN }, /* pip */
{ 0 x8615, KEY_ESC },
{ 0 x861a, KEY_UP },
{ 0 x861e, KEY_DOWN },
{ 0 x861f, KEY_LEFT },
{ 0 x861b, KEY_RIGHT },
/* Key codes for the DiBcom MOD3000 remote. */
{ 0 x8000, KEY_MUTE },
{ 0 x8001, KEY_TEXT },
{ 0 x8002, KEY_HOME },
{ 0 x8003, KEY_POWER },
{ 0 x8004, KEY_RED },
{ 0 x8005, KEY_GREEN },
{ 0 x8006, KEY_YELLOW },
{ 0 x8007, KEY_BLUE },
{ 0 x8008, KEY_DVD },
{ 0 x8009, KEY_AUDIO },
{ 0 x800a, KEY_IMAGES }, /* Pictures */
{ 0 x800b, KEY_VIDEO },
{ 0 x800c, KEY_BACK },
{ 0 x800d, KEY_UP },
{ 0 x800e, KEY_RADIO },
{ 0 x800f, KEY_EPG },
{ 0 x8010, KEY_LEFT },
{ 0 x8011, KEY_OK },
{ 0 x8012, KEY_RIGHT },
{ 0 x8013, KEY_UNKNOWN }, /* SAP */
{ 0 x8014, KEY_TV },
{ 0 x8015, KEY_DOWN },
{ 0 x8016, KEY_MENU }, /* DVD Menu */
{ 0 x8017, KEY_LAST },
{ 0 x8018, KEY_RECORD },
{ 0 x8019, KEY_STOP },
{ 0 x801a, KEY_PAUSE },
{ 0 x801b, KEY_PLAY },
{ 0 x801c, KEY_PREVIOUS },
{ 0 x801d, KEY_REWIND },
{ 0 x801e, KEY_FASTFORWARD },
{ 0 x801f, KEY_NEXT},
{ 0 x8040, KEY_1 },
{ 0 x8041, KEY_2 },
{ 0 x8042, KEY_3 },
{ 0 x8043, KEY_CHANNELUP },
{ 0 x8044, KEY_4 },
{ 0 x8045, KEY_5 },
{ 0 x8046, KEY_6 },
{ 0 x8047, KEY_CHANNELDOWN },
{ 0 x8048, KEY_7 },
{ 0 x8049, KEY_8 },
{ 0 x804a, KEY_9 },
{ 0 x804b, KEY_VOLUMEUP },
{ 0 x804c, KEY_CLEAR },
{ 0 x804d, KEY_0 },
{ 0 x804e, KEY_ENTER },
{ 0 x804f, KEY_VOLUMEDOWN },
};
EXPORT_SYMBOL(rc_map_dibusb_table);
int dibusb_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
{
u8 *buf;
int ret;
buf = kmalloc(5 , GFP_KERNEL);
if (!buf)
return -ENOMEM;
buf[0 ] = DIBUSB_REQ_POLL_REMOTE;
ret = dvb_usb_generic_rw(d, buf, 1 , buf, 5 , 0 );
if (ret < 0 )
goto ret;
dvb_usb_nec_rc_key_to_event(d, buf, event, state);
if (buf[0 ] != 0 )
deb_info("key: %*ph\n" , 5 , buf);
ret:
kfree(buf);
return ret;
}
EXPORT_SYMBOL(dibusb_rc_query);
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