Release 4.7 drivers/media/usb/dvb-usb/dtt200u-fe.c
/* Frontend part of the Linux driver for the WideView/ Yakumo/ Hama/
* Typhoon/ Yuan DVB-T USB2.0 receiver.
*
* Copyright (C) 2005 Patrick Boettcher <patrick.boettcher@posteo.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 "dtt200u.h"
struct dtt200u_fe_state {
struct dvb_usb_device *d;
enum fe_status stat;
struct dtv_frontend_properties fep;
struct dvb_frontend frontend;
};
static int dtt200u_fe_read_status(struct dvb_frontend *fe,
enum fe_status *stat)
{
struct dtt200u_fe_state *state = fe->demodulator_priv;
u8 st = GET_TUNE_STATUS, b[3];
dvb_usb_generic_rw(state->d,&st,1,b,3,0);
switch (b[0]) {
case 0x01:
*stat = FE_HAS_SIGNAL | FE_HAS_CARRIER |
FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
break;
case 0x00: /* pending */
*stat = FE_TIMEDOUT; /* during set_frontend */
break;
default:
case 0x02: /* failed */
*stat = 0;
break;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| johannes stezenbach | johannes stezenbach | 84 | 80.77% | 1 | 33.33% |
| patrick boettcher | patrick boettcher | 18 | 17.31% | 1 | 33.33% |
| mauro carvalho chehab | mauro carvalho chehab | 2 | 1.92% | 1 | 33.33% |
| Total | 104 | 100.00% | 3 | 100.00% |
static int dtt200u_fe_read_ber(struct dvb_frontend* fe, u32 *ber)
{
struct dtt200u_fe_state *state = fe->demodulator_priv;
u8 bw = GET_VIT_ERR_CNT,b[3];
dvb_usb_generic_rw(state->d,&bw,1,b,3,0);
*ber = (b[0] << 16) | (b[1] << 8) | b[2];
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| johannes stezenbach | johannes stezenbach | 48 | 59.26% | 1 | 50.00% |
| patrick boettcher | patrick boettcher | 33 | 40.74% | 1 | 50.00% |
| Total | 81 | 100.00% | 2 | 100.00% |
static int dtt200u_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
{
struct dtt200u_fe_state *state = fe->demodulator_priv;
u8 bw = GET_RS_UNCOR_BLK_CNT,b[2];
dvb_usb_generic_rw(state->d,&bw,1,b,2,0);
*unc = (b[0] << 8) | b[1];
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| johannes stezenbach | johannes stezenbach | 47 | 65.28% | 1 | 50.00% |
| patrick boettcher | patrick boettcher | 25 | 34.72% | 1 | 50.00% |
| Total | 72 | 100.00% | 2 | 100.00% |
static int dtt200u_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
{
struct dtt200u_fe_state *state = fe->demodulator_priv;
u8 bw = GET_AGC, b;
dvb_usb_generic_rw(state->d,&bw,1,&b,1,0);
*strength = (b << 8) | b;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| johannes stezenbach | johannes stezenbach | 63 | 98.44% | 1 | 50.00% |
| patrick boettcher | patrick boettcher | 1 | 1.56% | 1 | 50.00% |
| Total | 64 | 100.00% | 2 | 100.00% |
static int dtt200u_fe_read_snr(struct dvb_frontend* fe, u16 *snr)
{
struct dtt200u_fe_state *state = fe->demodulator_priv;
u8 bw = GET_SNR,br;
dvb_usb_generic_rw(state->d,&bw,1,&br,1,0);
*snr = ~((br << 8) | br);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| johannes stezenbach | johannes stezenbach | 67 | 100.00% | 1 | 100.00% |
| Total | 67 | 100.00% | 1 | 100.00% |
static int dtt200u_fe_init(struct dvb_frontend* fe)
{
struct dtt200u_fe_state *state = fe->demodulator_priv;
u8 b = SET_INIT;
return dvb_usb_generic_write(state->d,&b,1);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| johannes stezenbach | johannes stezenbach | 37 | 97.37% | 1 | 50.00% |
| patrick boettcher | patrick boettcher | 1 | 2.63% | 1 | 50.00% |
| Total | 38 | 100.00% | 2 | 100.00% |
static int dtt200u_fe_sleep(struct dvb_frontend* fe)
{
return dtt200u_fe_init(fe);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| johannes stezenbach | johannes stezenbach | 17 | 100.00% | 1 | 100.00% |
| Total | 17 | 100.00% | 1 | 100.00% |
static int dtt200u_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
{
tune->min_delay_ms = 1500;
tune->step_size = 0;
tune->max_drift = 0;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| johannes stezenbach | johannes stezenbach | 35 | 94.59% | 1 | 50.00% |
| patrick boettcher | patrick boettcher | 2 | 5.41% | 1 | 50.00% |
| Total | 37 | 100.00% | 2 | 100.00% |
static int dtt200u_fe_set_frontend(struct dvb_frontend *fe)
{
struct dtv_frontend_properties *fep = &fe->dtv_property_cache;
struct dtt200u_fe_state *state = fe->demodulator_priv;
int i;
enum fe_status st;
u16 freq = fep->frequency / 250000;
u8 bwbuf[2] = { SET_BANDWIDTH, 0 },freqbuf[3] = { SET_RF_FREQ, 0, 0 };
switch (fep->bandwidth_hz) {
case 8000000:
bwbuf[1] = 8;
break;
case 7000000:
bwbuf[1] = 7;
break;
case 6000000:
bwbuf[1] = 6;
break;
default:
return -EINVAL;
}
dvb_usb_generic_write(state->d,bwbuf,2);
freqbuf[1] = freq & 0xff;
freqbuf[2] = (freq >> 8) & 0xff;
dvb_usb_generic_write(state->d,freqbuf,3);
for (i = 0; i < 30; i++) {
msleep(20);
dtt200u_fe_read_status(fe, &st);
if (st & FE_TIMEDOUT)
continue;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| johannes stezenbach | johannes stezenbach | 135 | 67.84% | 1 | 25.00% |
| patrick boettcher | patrick boettcher | 49 | 24.62% | 1 | 25.00% |
| mauro carvalho chehab | mauro carvalho chehab | 15 | 7.54% | 2 | 50.00% |
| Total | 199 | 100.00% | 4 | 100.00% |
static int dtt200u_fe_get_frontend(struct dvb_frontend* fe,
struct dtv_frontend_properties *fep)
{
struct dtt200u_fe_state *state = fe->demodulator_priv;
memcpy(fep, &state->fep, sizeof(struct dtv_frontend_properties));
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| johannes stezenbach | johannes stezenbach | 39 | 88.64% | 1 | 33.33% |
| mauro carvalho chehab | mauro carvalho chehab | 5 | 11.36% | 2 | 66.67% |
| Total | 44 | 100.00% | 3 | 100.00% |
static void dtt200u_fe_release(struct dvb_frontend* fe)
{
struct dtt200u_fe_state *state = (struct dtt200u_fe_state*) fe->demodulator_priv;
kfree(state);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| johannes stezenbach | johannes stezenbach | 30 | 100.00% | 1 | 100.00% |
| Total | 30 | 100.00% | 1 | 100.00% |
static struct dvb_frontend_ops dtt200u_fe_ops;
struct dvb_frontend* dtt200u_fe_attach(struct dvb_usb_device *d)
{
struct dtt200u_fe_state* state = NULL;
/* allocate memory for the internal state */
state = kzalloc(sizeof(struct dtt200u_fe_state), GFP_KERNEL);
if (state == NULL)
goto error;
deb_info("attaching frontend dtt200u\n");
state->d = d;
memcpy(&state->frontend.ops,&dtt200u_fe_ops,sizeof(struct dvb_frontend_ops));
state->frontend.demodulator_priv = state;
return &state->frontend;
error:
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| johannes stezenbach | johannes stezenbach | 66 | 72.53% | 1 | 20.00% |
| ye jianjun (joey) | ye jianjun (joey) | 17 | 18.68% | 1 | 20.00% |
| trent piepho | trent piepho | 5 | 5.49% | 1 | 20.00% |
| patrick boettcher | patrick boettcher | 2 | 2.20% | 1 | 20.00% |
| panagiotis issaris* | panagiotis issaris* | 1 | 1.10% | 1 | 20.00% |
| Total | 91 | 100.00% | 5 | 100.00% |
static struct dvb_frontend_ops dtt200u_fe_ops = {
.delsys = { SYS_DVBT },
.info = {
.name = "WideView USB DVB-T",
.frequency_min = 44250000,
.frequency_max = 867250000,
.frequency_stepsize = 250000,
.caps = FE_CAN_INVERSION_AUTO |
FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
FE_CAN_TRANSMISSION_MODE_AUTO |
FE_CAN_GUARD_INTERVAL_AUTO |
FE_CAN_RECOVER |
FE_CAN_HIERARCHY_AUTO,
},
.release = dtt200u_fe_release,
.init = dtt200u_fe_init,
.sleep = dtt200u_fe_sleep,
.set_frontend = dtt200u_fe_set_frontend,
.get_frontend = dtt200u_fe_get_frontend,
.get_tune_settings = dtt200u_fe_get_tune_settings,
.read_status = dtt200u_fe_read_status,
.read_ber = dtt200u_fe_read_ber,
.read_signal_strength = dtt200u_fe_read_signal_strength,
.read_snr = dtt200u_fe_read_snr,
.read_ucblocks = dtt200u_fe_read_unc_blocks,
};
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| johannes stezenbach | johannes stezenbach | 810 | 80.84% | 1 | 10.00% |
| patrick boettcher | patrick boettcher | 135 | 13.47% | 3 | 30.00% |
| mauro carvalho chehab | mauro carvalho chehab | 34 | 3.39% | 3 | 30.00% |
| ye jianjun (joey) | ye jianjun (joey) | 17 | 1.70% | 1 | 10.00% |
| trent piepho | trent piepho | 5 | 0.50% | 1 | 10.00% |
| panagiotis issaris* | panagiotis issaris* | 1 | 0.10% | 1 | 10.00% |
| Total | 1002 | 100.00% | 10 | 100.00% |
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