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linux_dsm_epyc7002/drivers/media/usb/dvb-usb/dibusb-common.c
Mauro Carvalho Chehab 1d7fa359d4 [media] dibusb-common: Don't use dynamic static allocation 
Dynamic static allocation is evil, as Kernel stack is too low, and
compilation complains about it on some archs:
	drivers/media/usb/dvb-usb/dibusb-common.c:124:1: warning: 'dibusb_i2c_msg' uses dynamic stack allocation [enabled by default]
Instead, let's enforce a limit for the buffer to be the max size of
a control URB payload data (64 bytes).

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-11-08 09:45:44 -02:00

489 lines
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/* Common methods for dibusb-based-receivers.
*
* Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de)
*
* 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, version 2.
*
* see Documentation/dvb/README.dvb-usb for more information
*/
#include <linux/kconfig.h>
#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_LICENSE("GPL");
#define deb_info(args...) dprintk(debug,0x01,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[3];
int ret;
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);
msleep(10);
return ret;
}
EXPORT_SYMBOL(dibusb_power_ctrl);
int dibusb2_0_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
{
u8 b[3] = { 0 };
int ret;
if ((ret = dibusb_streaming_ctrl(adap,onoff)) < 0)
return ret;
if (onoff) {
b[0] = DIBUSB_REQ_SET_STREAMING_MODE;
b[1] = 0x00;
if ((ret = dvb_usb_generic_write(adap->dev,b,2)) < 0)
return ret;
}
b[0] = DIBUSB_REQ_SET_IOCTL;
b[1] = onoff ? DIBUSB_IOCTL_CMD_ENABLE_STREAM : DIBUSB_IOCTL_CMD_DISABLE_STREAM;
return dvb_usb_generic_write(adap->dev,b,3);
}
EXPORT_SYMBOL(dibusb2_0_streaming_ctrl);
int dibusb2_0_power_ctrl(struct dvb_usb_device *d, int onoff)
{
if (onoff) {
u8 b[3] = { DIBUSB_REQ_SET_IOCTL, DIBUSB_IOCTL_CMD_POWER_MODE, DIBUSB_IOCTL_POWER_WAKEUP };
return dvb_usb_generic_write(d,b,3);
} else
return 0;
}
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[MAX_XFER_SIZE]; /* lead(1) devaddr,direction(1) addr(2) data(wlen) (len(2) (when reading)) */
/* write only ? */
int wo = (rbuf == NULL || rlen == 0),
len = 2 + wlen + (wo ? 0 : 2);
if (4 + wlen > sizeof(sndbuf)) {
warn("i2c wr: len=%d is too big!\n", wlen);
return -EOPNOTSUPP;
}
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) & 0xff;
sndbuf[wlen+3] = rlen & 0xff;
}
return dvb_usb_generic_rw(d,sndbuf,len,rbuf,rlen,0);
}
/*
* 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 != 0x50) {
/* 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 wbuf[1] = { offs };
return dibusb_i2c_msg(d, 0x50, wbuf, 1, val, 1);
}
EXPORT_SYMBOL(dibusb_read_eeprom_byte);
/* 3000MC/P stuff */
// Config Adjacent channels Perf -cal22
static struct dibx000_agc_config dib3000p_mt2060_agc_config = {
.band_caps = BAND_VHF | BAND_UHF,
.setup = (1 << 8) | (5 << 5) | (1 << 4) | (1 << 3) | (0 << 2) | (2 << 0),
.agc1_max = 48497,
.agc1_min = 23593,
.agc2_max = 46531,
.agc2_min = 24904,
.agc1_pt1 = 0x65,
.agc1_pt2 = 0x69,
.agc1_slope1 = 0x51,
.agc1_slope2 = 0x27,
.agc2_pt1 = 0,
.agc2_pt2 = 0x33,
.agc2_slope1 = 0x35,
.agc2_slope2 = 0x37,
};
static struct dib3000mc_config stk3000p_dib3000p_config = {
&dib3000p_mt2060_agc_config,
.max_time = 0x196,
.ln_adc_level = 0x1cc7,
.output_mpeg2_in_188_bytes = 1,
.agc_command1 = 1,
.agc_command2 = 1,
};
static struct dibx000_agc_config dib3000p_panasonic_agc_config = {
.band_caps = BAND_VHF | BAND_UHF,
.setup = (1 << 8) | (5 << 5) | (1 << 4) | (1 << 3) | (0 << 2) | (2 << 0),
.agc1_max = 56361,
.agc1_min = 22282,
.agc2_max = 47841,
.agc2_min = 36045,
.agc1_pt1 = 0x3b,
.agc1_pt2 = 0x6b,
.agc1_slope1 = 0x55,
.agc1_slope2 = 0x1d,
.agc2_pt1 = 0,
.agc2_pt2 = 0x0a,
.agc2_slope1 = 0x95,
.agc2_slope2 = 0x1e,
};
#if IS_ENABLED(CONFIG_DVB_DIB3000MC)
static struct dib3000mc_config mod3000p_dib3000p_config = {
&dib3000p_panasonic_agc_config,
.max_time = 0x51,
.ln_adc_level = 0x1cc7,
.output_mpeg2_in_188_bytes = 1,
.agc_command1 = 1,
.agc_command2 = 1,
};
int dibusb_dib3000mc_frontend_attach(struct dvb_usb_adapter *adap)
{
if (adap->dev->udev->descriptor.idVendor == USB_VID_LITEON &&
adap->dev->udev->descriptor.idProduct ==
USB_PID_LITEON_DVB_T_WARM) {
msleep(1000);
}
adap->fe_adap[0].fe = dvb_attach(dib3000mc_attach,
&adap->dev->i2c_adap,
DEFAULT_DIB3000P_I2C_ADDRESS,
&mod3000p_dib3000p_config);
if ((adap->fe_adap[0].fe) == NULL)
adap->fe_adap[0].fe = dvb_attach(dib3000mc_attach,
&adap->dev->i2c_adap,
DEFAULT_DIB3000MC_I2C_ADDRESS,
&mod3000p_dib3000p_config);
if ((adap->fe_adap[0].fe) != NULL) {
if (adap->priv != NULL) {
struct dibusb_state *st = adap->priv;
st->ops.pid_parse = dib3000mc_pid_parse;
st->ops.pid_ctrl = dib3000mc_pid_control;
}
return 0;
}
return -ENODEV;
}
EXPORT_SYMBOL(dibusb_dib3000mc_frontend_attach);
static struct mt2060_config stk3000p_mt2060_config = {
0x60
};
int dibusb_dib3000mc_tuner_attach(struct dvb_usb_adapter *adap)
{
struct dibusb_state *st = adap->priv;
u8 a,b;
u16 if1 = 1220;
struct i2c_adapter *tun_i2c;
// First IF calibration for Liteon Sticks
if (adap->dev->udev->descriptor.idVendor == USB_VID_LITEON &&
adap->dev->udev->descriptor.idProduct == USB_PID_LITEON_DVB_T_WARM) {
dibusb_read_eeprom_byte(adap->dev,0x7E,&a);
dibusb_read_eeprom_byte(adap->dev,0x7F,&b);
if (a == 0x00)
if1 += b;
else if (a == 0x80)
if1 -= b;
else
warn("LITE-ON DVB-T: Strange IF1 calibration :%2X %2X\n", a, b);
} else if (adap->dev->udev->descriptor.idVendor == USB_VID_DIBCOM &&
adap->dev->udev->descriptor.idProduct == USB_PID_DIBCOM_MOD3001_WARM) {
u8 desc;
dibusb_read_eeprom_byte(adap->dev, 7, &desc);
if (desc == 2) {
a = 127;
do {
dibusb_read_eeprom_byte(adap->dev, a, &desc);
a--;
} while (a > 7 && (desc == 0xff || desc == 0x00));
if (desc & 0x80)
if1 -= (0xff - desc);
else
if1 += desc;
}
}
tun_i2c = dib3000mc_get_tuner_i2c_master(adap->fe_adap[0].fe, 1);
if (dvb_attach(mt2060_attach, adap->fe_adap[0].fe, tun_i2c, &stk3000p_mt2060_config, if1) == NULL) {
/* not found - use panasonic pll parameters */
if (dvb_attach(dvb_pll_attach, adap->fe_adap[0].fe, 0x60, tun_i2c, DVB_PLL_ENV57H1XD5) == NULL)
return -ENOMEM;
} else {
st->mt2060_present = 1;
/* set the correct parameters for the dib3000p */
dib3000mc_set_config(adap->fe_adap[0].fe, &stk3000p_dib3000p_config);
}
return 0;
}
EXPORT_SYMBOL(dibusb_dib3000mc_tuner_attach);
#endif
/*
* common remote control stuff
*/
struct rc_map_table rc_map_dibusb_table[] = {
/* Key codes for the little Artec T1/Twinhan/HAMA/ remote. */
{ 0x0016, KEY_POWER },
{ 0x0010, KEY_MUTE },
{ 0x0003, KEY_1 },
{ 0x0001, KEY_2 },
{ 0x0006, KEY_3 },
{ 0x0009, KEY_4 },
{ 0x001d, KEY_5 },
{ 0x001f, KEY_6 },
{ 0x000d, KEY_7 },
{ 0x0019, KEY_8 },
{ 0x001b, KEY_9 },
{ 0x0015, KEY_0 },
{ 0x0005, KEY_CHANNELUP },
{ 0x0002, KEY_CHANNELDOWN },
{ 0x001e, KEY_VOLUMEUP },
{ 0x000a, KEY_VOLUMEDOWN },
{ 0x0011, KEY_RECORD },
{ 0x0017, KEY_FAVORITES }, /* Heart symbol - Channel list. */
{ 0x0014, KEY_PLAY },
{ 0x001a, KEY_STOP },
{ 0x0040, KEY_REWIND },
{ 0x0012, KEY_FASTFORWARD },
{ 0x000e, KEY_PREVIOUS }, /* Recall - Previous channel. */
{ 0x004c, KEY_PAUSE },
{ 0x004d, KEY_SCREEN }, /* Full screen mode. */
{ 0x0054, KEY_AUDIO }, /* MTS - Switch to secondary audio. */
/* additional keys TwinHan VisionPlus, the Artec seemingly not have */
{ 0x000c, KEY_CANCEL }, /* Cancel */
{ 0x001c, KEY_EPG }, /* EPG */
{ 0x0000, KEY_TAB }, /* Tab */
{ 0x0048, KEY_INFO }, /* Preview */
{ 0x0004, KEY_LIST }, /* RecordList */
{ 0x000f, KEY_TEXT }, /* Teletext */
/* Key codes for the KWorld/ADSTech/JetWay remote. */
{ 0x8612, KEY_POWER },
{ 0x860f, KEY_SELECT }, /* source */
{ 0x860c, KEY_UNKNOWN }, /* scan */
{ 0x860b, KEY_EPG },
{ 0x8610, KEY_MUTE },
{ 0x8601, KEY_1 },
{ 0x8602, KEY_2 },
{ 0x8603, KEY_3 },
{ 0x8604, KEY_4 },
{ 0x8605, KEY_5 },
{ 0x8606, KEY_6 },
{ 0x8607, KEY_7 },
{ 0x8608, KEY_8 },
{ 0x8609, KEY_9 },
{ 0x860a, KEY_0 },
{ 0x8618, KEY_ZOOM },
{ 0x861c, KEY_UNKNOWN }, /* preview */
{ 0x8613, KEY_UNKNOWN }, /* snap */
{ 0x8600, KEY_UNDO },
{ 0x861d, KEY_RECORD },
{ 0x860d, KEY_STOP },
{ 0x860e, KEY_PAUSE },
{ 0x8616, KEY_PLAY },
{ 0x8611, KEY_BACK },
{ 0x8619, KEY_FORWARD },
{ 0x8614, KEY_UNKNOWN }, /* pip */
{ 0x8615, KEY_ESC },
{ 0x861a, KEY_UP },
{ 0x861e, KEY_DOWN },
{ 0x861f, KEY_LEFT },
{ 0x861b, KEY_RIGHT },
/* Key codes for the DiBcom MOD3000 remote. */
{ 0x8000, KEY_MUTE },
{ 0x8001, KEY_TEXT },
{ 0x8002, KEY_HOME },
{ 0x8003, KEY_POWER },
{ 0x8004, KEY_RED },
{ 0x8005, KEY_GREEN },
{ 0x8006, KEY_YELLOW },
{ 0x8007, KEY_BLUE },
{ 0x8008, KEY_DVD },
{ 0x8009, KEY_AUDIO },
{ 0x800a, KEY_IMAGES }, /* Pictures */
{ 0x800b, KEY_VIDEO },
{ 0x800c, KEY_BACK },
{ 0x800d, KEY_UP },
{ 0x800e, KEY_RADIO },
{ 0x800f, KEY_EPG },
{ 0x8010, KEY_LEFT },
{ 0x8011, KEY_OK },
{ 0x8012, KEY_RIGHT },
{ 0x8013, KEY_UNKNOWN }, /* SAP */
{ 0x8014, KEY_TV },
{ 0x8015, KEY_DOWN },
{ 0x8016, KEY_MENU }, /* DVD Menu */
{ 0x8017, KEY_LAST },
{ 0x8018, KEY_RECORD },
{ 0x8019, KEY_STOP },
{ 0x801a, KEY_PAUSE },
{ 0x801b, KEY_PLAY },
{ 0x801c, KEY_PREVIOUS },
{ 0x801d, KEY_REWIND },
{ 0x801e, KEY_FASTFORWARD },
{ 0x801f, KEY_NEXT},
{ 0x8040, KEY_1 },
{ 0x8041, KEY_2 },
{ 0x8042, KEY_3 },
{ 0x8043, KEY_CHANNELUP },
{ 0x8044, KEY_4 },
{ 0x8045, KEY_5 },
{ 0x8046, KEY_6 },
{ 0x8047, KEY_CHANNELDOWN },
{ 0x8048, KEY_7 },
{ 0x8049, KEY_8 },
{ 0x804a, KEY_9 },
{ 0x804b, KEY_VOLUMEUP },
{ 0x804c, KEY_CLEAR },
{ 0x804d, KEY_0 },
{ 0x804e, KEY_ENTER },
{ 0x804f, KEY_VOLUMEDOWN },
};
EXPORT_SYMBOL(rc_map_dibusb_table);
int dibusb_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
{
u8 key[5],cmd = DIBUSB_REQ_POLL_REMOTE;
dvb_usb_generic_rw(d,&cmd,1,key,5,0);
dvb_usb_nec_rc_key_to_event(d,key,event,state);
if (key[0] != 0)
deb_info("key: %*ph\n", 5, key);
return 0;
}
EXPORT_SYMBOL(dibusb_rc_query);
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