forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
853 lines
20 KiB
853 lines
20 KiB
// SPDX-License-Identifier: GPL-2.0 |
|
/* |
|
* Toshiba TC90522 Demodulator |
|
* |
|
* Copyright (C) 2014 Akihiro Tsukada <[email protected]> |
|
*/ |
|
|
|
/* |
|
* NOTICE: |
|
* This driver is incomplete and lacks init/config of the chips, |
|
* as the necessary info is not disclosed. |
|
* It assumes that users of this driver (such as a PCI bridge of |
|
* DTV receiver cards) properly init and configure the chip |
|
* via I2C *before* calling this driver's init() function. |
|
* |
|
* Currently, PT3 driver is the only one that uses this driver, |
|
* and contains init/config code in its firmware. |
|
* Thus some part of the code might be dependent on PT3 specific config. |
|
*/ |
|
|
|
#include <linux/kernel.h> |
|
#include <linux/math64.h> |
|
#include <linux/dvb/frontend.h> |
|
#include <media/dvb_math.h> |
|
#include "tc90522.h" |
|
|
|
#define TC90522_I2C_THRU_REG 0xfe |
|
|
|
#define TC90522_MODULE_IDX(addr) (((u8)(addr) & 0x02U) >> 1) |
|
|
|
struct tc90522_state { |
|
struct tc90522_config cfg; |
|
struct dvb_frontend fe; |
|
struct i2c_client *i2c_client; |
|
struct i2c_adapter tuner_i2c; |
|
|
|
bool lna; |
|
}; |
|
|
|
struct reg_val { |
|
u8 reg; |
|
u8 val; |
|
}; |
|
|
|
static int |
|
reg_write(struct tc90522_state *state, const struct reg_val *regs, int num) |
|
{ |
|
int i, ret; |
|
struct i2c_msg msg; |
|
|
|
ret = 0; |
|
msg.addr = state->i2c_client->addr; |
|
msg.flags = 0; |
|
msg.len = 2; |
|
for (i = 0; i < num; i++) { |
|
msg.buf = (u8 *)®s[i]; |
|
ret = i2c_transfer(state->i2c_client->adapter, &msg, 1); |
|
if (ret == 0) |
|
ret = -EIO; |
|
if (ret < 0) |
|
return ret; |
|
} |
|
return 0; |
|
} |
|
|
|
static int reg_read(struct tc90522_state *state, u8 reg, u8 *val, u8 len) |
|
{ |
|
struct i2c_msg msgs[2] = { |
|
{ |
|
.addr = state->i2c_client->addr, |
|
.flags = 0, |
|
.buf = ®, |
|
.len = 1, |
|
}, |
|
{ |
|
.addr = state->i2c_client->addr, |
|
.flags = I2C_M_RD, |
|
.buf = val, |
|
.len = len, |
|
}, |
|
}; |
|
int ret; |
|
|
|
ret = i2c_transfer(state->i2c_client->adapter, msgs, ARRAY_SIZE(msgs)); |
|
if (ret == ARRAY_SIZE(msgs)) |
|
ret = 0; |
|
else if (ret >= 0) |
|
ret = -EIO; |
|
return ret; |
|
} |
|
|
|
static struct tc90522_state *cfg_to_state(struct tc90522_config *c) |
|
{ |
|
return container_of(c, struct tc90522_state, cfg); |
|
} |
|
|
|
|
|
static int tc90522s_set_tsid(struct dvb_frontend *fe) |
|
{ |
|
struct reg_val set_tsid[] = { |
|
{ 0x8f, 00 }, |
|
{ 0x90, 00 } |
|
}; |
|
|
|
set_tsid[0].val = (fe->dtv_property_cache.stream_id & 0xff00) >> 8; |
|
set_tsid[1].val = fe->dtv_property_cache.stream_id & 0xff; |
|
return reg_write(fe->demodulator_priv, set_tsid, ARRAY_SIZE(set_tsid)); |
|
} |
|
|
|
static int tc90522t_set_layers(struct dvb_frontend *fe) |
|
{ |
|
struct reg_val rv; |
|
u8 laysel; |
|
|
|
laysel = ~fe->dtv_property_cache.isdbt_layer_enabled & 0x07; |
|
laysel = (laysel & 0x01) << 2 | (laysel & 0x02) | (laysel & 0x04) >> 2; |
|
rv.reg = 0x71; |
|
rv.val = laysel; |
|
return reg_write(fe->demodulator_priv, &rv, 1); |
|
} |
|
|
|
/* frontend ops */ |
|
|
|
static int tc90522s_read_status(struct dvb_frontend *fe, enum fe_status *status) |
|
{ |
|
struct tc90522_state *state; |
|
int ret; |
|
u8 reg; |
|
|
|
state = fe->demodulator_priv; |
|
ret = reg_read(state, 0xc3, ®, 1); |
|
if (ret < 0) |
|
return ret; |
|
|
|
*status = 0; |
|
if (reg & 0x80) /* input level under min ? */ |
|
return 0; |
|
*status |= FE_HAS_SIGNAL; |
|
|
|
if (reg & 0x60) /* carrier? */ |
|
return 0; |
|
*status |= FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC; |
|
|
|
if (reg & 0x10) |
|
return 0; |
|
if (reg_read(state, 0xc5, ®, 1) < 0 || !(reg & 0x03)) |
|
return 0; |
|
*status |= FE_HAS_LOCK; |
|
return 0; |
|
} |
|
|
|
static int tc90522t_read_status(struct dvb_frontend *fe, enum fe_status *status) |
|
{ |
|
struct tc90522_state *state; |
|
int ret; |
|
u8 reg; |
|
|
|
state = fe->demodulator_priv; |
|
ret = reg_read(state, 0x96, ®, 1); |
|
if (ret < 0) |
|
return ret; |
|
|
|
*status = 0; |
|
if (reg & 0xe0) { |
|
*status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
|
| FE_HAS_SYNC | FE_HAS_LOCK; |
|
return 0; |
|
} |
|
|
|
ret = reg_read(state, 0x80, ®, 1); |
|
if (ret < 0) |
|
return ret; |
|
|
|
if (reg & 0xf0) |
|
return 0; |
|
*status |= FE_HAS_SIGNAL | FE_HAS_CARRIER; |
|
|
|
if (reg & 0x0c) |
|
return 0; |
|
*status |= FE_HAS_SYNC | FE_HAS_VITERBI; |
|
|
|
if (reg & 0x02) |
|
return 0; |
|
*status |= FE_HAS_LOCK; |
|
return 0; |
|
} |
|
|
|
static const enum fe_code_rate fec_conv_sat[] = { |
|
FEC_NONE, /* unused */ |
|
FEC_1_2, /* for BPSK */ |
|
FEC_1_2, FEC_2_3, FEC_3_4, FEC_5_6, FEC_7_8, /* for QPSK */ |
|
FEC_2_3, /* for 8PSK. (trellis code) */ |
|
}; |
|
|
|
static int tc90522s_get_frontend(struct dvb_frontend *fe, |
|
struct dtv_frontend_properties *c) |
|
{ |
|
struct tc90522_state *state; |
|
struct dtv_fe_stats *stats; |
|
int ret, i; |
|
int layers; |
|
u8 val[10]; |
|
u32 cndat; |
|
|
|
state = fe->demodulator_priv; |
|
c->delivery_system = SYS_ISDBS; |
|
c->symbol_rate = 28860000; |
|
|
|
layers = 0; |
|
ret = reg_read(state, 0xe6, val, 5); |
|
if (ret == 0) { |
|
u8 v; |
|
|
|
c->stream_id = val[0] << 8 | val[1]; |
|
|
|
/* high/single layer */ |
|
v = (val[2] & 0x70) >> 4; |
|
c->modulation = (v == 7) ? PSK_8 : QPSK; |
|
c->fec_inner = fec_conv_sat[v]; |
|
c->layer[0].fec = c->fec_inner; |
|
c->layer[0].modulation = c->modulation; |
|
c->layer[0].segment_count = val[3] & 0x3f; /* slots */ |
|
|
|
/* low layer */ |
|
v = (val[2] & 0x07); |
|
c->layer[1].fec = fec_conv_sat[v]; |
|
if (v == 0) /* no low layer */ |
|
c->layer[1].segment_count = 0; |
|
else |
|
c->layer[1].segment_count = val[4] & 0x3f; /* slots */ |
|
/* |
|
* actually, BPSK if v==1, but not defined in |
|
* enum fe_modulation |
|
*/ |
|
c->layer[1].modulation = QPSK; |
|
layers = (v > 0) ? 2 : 1; |
|
} |
|
|
|
/* statistics */ |
|
|
|
stats = &c->strength; |
|
stats->len = 0; |
|
/* let the connected tuner set RSSI property cache */ |
|
if (fe->ops.tuner_ops.get_rf_strength) { |
|
u16 dummy; |
|
|
|
fe->ops.tuner_ops.get_rf_strength(fe, &dummy); |
|
} |
|
|
|
stats = &c->cnr; |
|
stats->len = 1; |
|
stats->stat[0].scale = FE_SCALE_NOT_AVAILABLE; |
|
cndat = 0; |
|
ret = reg_read(state, 0xbc, val, 2); |
|
if (ret == 0) |
|
cndat = val[0] << 8 | val[1]; |
|
if (cndat >= 3000) { |
|
u32 p, p4; |
|
s64 cn; |
|
|
|
cndat -= 3000; /* cndat: 4.12 fixed point float */ |
|
/* |
|
* cnr[mdB] = -1634.6 * P^5 + 14341 * P^4 - 50259 * P^3 |
|
* + 88977 * P^2 - 89565 * P + 58857 |
|
* (P = sqrt(cndat) / 64) |
|
*/ |
|
/* p := sqrt(cndat) << 8 = P << 14, 2.14 fixed point float */ |
|
/* cn = cnr << 3 */ |
|
p = int_sqrt(cndat << 16); |
|
p4 = cndat * cndat; |
|
cn = div64_s64(-16346LL * p4 * p, 10) >> 35; |
|
cn += (14341LL * p4) >> 21; |
|
cn -= (50259LL * cndat * p) >> 23; |
|
cn += (88977LL * cndat) >> 9; |
|
cn -= (89565LL * p) >> 11; |
|
cn += 58857 << 3; |
|
stats->stat[0].svalue = cn >> 3; |
|
stats->stat[0].scale = FE_SCALE_DECIBEL; |
|
} |
|
|
|
/* per-layer post viterbi BER (or PER? config dependent?) */ |
|
stats = &c->post_bit_error; |
|
memset(stats, 0, sizeof(*stats)); |
|
stats->len = layers; |
|
ret = reg_read(state, 0xeb, val, 10); |
|
if (ret < 0) |
|
for (i = 0; i < layers; i++) |
|
stats->stat[i].scale = FE_SCALE_NOT_AVAILABLE; |
|
else { |
|
for (i = 0; i < layers; i++) { |
|
stats->stat[i].scale = FE_SCALE_COUNTER; |
|
stats->stat[i].uvalue = val[i * 5] << 16 |
|
| val[i * 5 + 1] << 8 | val[i * 5 + 2]; |
|
} |
|
} |
|
stats = &c->post_bit_count; |
|
memset(stats, 0, sizeof(*stats)); |
|
stats->len = layers; |
|
if (ret < 0) |
|
for (i = 0; i < layers; i++) |
|
stats->stat[i].scale = FE_SCALE_NOT_AVAILABLE; |
|
else { |
|
for (i = 0; i < layers; i++) { |
|
stats->stat[i].scale = FE_SCALE_COUNTER; |
|
stats->stat[i].uvalue = |
|
val[i * 5 + 3] << 8 | val[i * 5 + 4]; |
|
stats->stat[i].uvalue *= 204 * 8; |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
|
|
static const enum fe_transmit_mode tm_conv[] = { |
|
TRANSMISSION_MODE_2K, |
|
TRANSMISSION_MODE_4K, |
|
TRANSMISSION_MODE_8K, |
|
0 |
|
}; |
|
|
|
static const enum fe_code_rate fec_conv_ter[] = { |
|
FEC_1_2, FEC_2_3, FEC_3_4, FEC_5_6, FEC_7_8, 0, 0, 0 |
|
}; |
|
|
|
static const enum fe_modulation mod_conv[] = { |
|
DQPSK, QPSK, QAM_16, QAM_64, 0, 0, 0, 0 |
|
}; |
|
|
|
static int tc90522t_get_frontend(struct dvb_frontend *fe, |
|
struct dtv_frontend_properties *c) |
|
{ |
|
struct tc90522_state *state; |
|
struct dtv_fe_stats *stats; |
|
int ret, i; |
|
int layers; |
|
u8 val[15], mode; |
|
u32 cndat; |
|
|
|
state = fe->demodulator_priv; |
|
c->delivery_system = SYS_ISDBT; |
|
c->bandwidth_hz = 6000000; |
|
mode = 1; |
|
ret = reg_read(state, 0xb0, val, 1); |
|
if (ret == 0) { |
|
mode = (val[0] & 0xc0) >> 6; |
|
c->transmission_mode = tm_conv[mode]; |
|
c->guard_interval = (val[0] & 0x30) >> 4; |
|
} |
|
|
|
ret = reg_read(state, 0xb2, val, 6); |
|
layers = 0; |
|
if (ret == 0) { |
|
u8 v; |
|
|
|
c->isdbt_partial_reception = val[0] & 0x01; |
|
c->isdbt_sb_mode = (val[0] & 0xc0) == 0x40; |
|
|
|
/* layer A */ |
|
v = (val[2] & 0x78) >> 3; |
|
if (v == 0x0f) |
|
c->layer[0].segment_count = 0; |
|
else { |
|
layers++; |
|
c->layer[0].segment_count = v; |
|
c->layer[0].fec = fec_conv_ter[(val[1] & 0x1c) >> 2]; |
|
c->layer[0].modulation = mod_conv[(val[1] & 0xe0) >> 5]; |
|
v = (val[1] & 0x03) << 1 | (val[2] & 0x80) >> 7; |
|
c->layer[0].interleaving = v; |
|
} |
|
|
|
/* layer B */ |
|
v = (val[3] & 0x03) << 2 | (val[4] & 0xc0) >> 6; |
|
if (v == 0x0f) |
|
c->layer[1].segment_count = 0; |
|
else { |
|
layers++; |
|
c->layer[1].segment_count = v; |
|
c->layer[1].fec = fec_conv_ter[(val[3] & 0xe0) >> 5]; |
|
c->layer[1].modulation = mod_conv[(val[2] & 0x07)]; |
|
c->layer[1].interleaving = (val[3] & 0x1c) >> 2; |
|
} |
|
|
|
/* layer C */ |
|
v = (val[5] & 0x1e) >> 1; |
|
if (v == 0x0f) |
|
c->layer[2].segment_count = 0; |
|
else { |
|
layers++; |
|
c->layer[2].segment_count = v; |
|
c->layer[2].fec = fec_conv_ter[(val[4] & 0x07)]; |
|
c->layer[2].modulation = mod_conv[(val[4] & 0x38) >> 3]; |
|
c->layer[2].interleaving = (val[5] & 0xe0) >> 5; |
|
} |
|
} |
|
|
|
/* statistics */ |
|
|
|
stats = &c->strength; |
|
stats->len = 0; |
|
/* let the connected tuner set RSSI property cache */ |
|
if (fe->ops.tuner_ops.get_rf_strength) { |
|
u16 dummy; |
|
|
|
fe->ops.tuner_ops.get_rf_strength(fe, &dummy); |
|
} |
|
|
|
stats = &c->cnr; |
|
stats->len = 1; |
|
stats->stat[0].scale = FE_SCALE_NOT_AVAILABLE; |
|
cndat = 0; |
|
ret = reg_read(state, 0x8b, val, 3); |
|
if (ret == 0) |
|
cndat = val[0] << 16 | val[1] << 8 | val[2]; |
|
if (cndat != 0) { |
|
u32 p, tmp; |
|
s64 cn; |
|
|
|
/* |
|
* cnr[mdB] = 0.024 P^4 - 1.6 P^3 + 39.8 P^2 + 549.1 P + 3096.5 |
|
* (P = 10log10(5505024/cndat)) |
|
*/ |
|
/* cn = cnr << 3 (61.3 fixed point float */ |
|
/* p = 10log10(5505024/cndat) << 24 (8.24 fixed point float)*/ |
|
p = intlog10(5505024) - intlog10(cndat); |
|
p *= 10; |
|
|
|
cn = 24772; |
|
cn += div64_s64(43827LL * p, 10) >> 24; |
|
tmp = p >> 8; |
|
cn += div64_s64(3184LL * tmp * tmp, 10) >> 32; |
|
tmp = p >> 13; |
|
cn -= div64_s64(128LL * tmp * tmp * tmp, 10) >> 33; |
|
tmp = p >> 18; |
|
cn += div64_s64(192LL * tmp * tmp * tmp * tmp, 1000) >> 24; |
|
|
|
stats->stat[0].svalue = cn >> 3; |
|
stats->stat[0].scale = FE_SCALE_DECIBEL; |
|
} |
|
|
|
/* per-layer post viterbi BER (or PER? config dependent?) */ |
|
stats = &c->post_bit_error; |
|
memset(stats, 0, sizeof(*stats)); |
|
stats->len = layers; |
|
ret = reg_read(state, 0x9d, val, 15); |
|
if (ret < 0) |
|
for (i = 0; i < layers; i++) |
|
stats->stat[i].scale = FE_SCALE_NOT_AVAILABLE; |
|
else { |
|
for (i = 0; i < layers; i++) { |
|
stats->stat[i].scale = FE_SCALE_COUNTER; |
|
stats->stat[i].uvalue = val[i * 3] << 16 |
|
| val[i * 3 + 1] << 8 | val[i * 3 + 2]; |
|
} |
|
} |
|
stats = &c->post_bit_count; |
|
memset(stats, 0, sizeof(*stats)); |
|
stats->len = layers; |
|
if (ret < 0) |
|
for (i = 0; i < layers; i++) |
|
stats->stat[i].scale = FE_SCALE_NOT_AVAILABLE; |
|
else { |
|
for (i = 0; i < layers; i++) { |
|
stats->stat[i].scale = FE_SCALE_COUNTER; |
|
stats->stat[i].uvalue = |
|
val[9 + i * 2] << 8 | val[9 + i * 2 + 1]; |
|
stats->stat[i].uvalue *= 204 * 8; |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static const struct reg_val reset_sat = { 0x03, 0x01 }; |
|
static const struct reg_val reset_ter = { 0x01, 0x40 }; |
|
|
|
static int tc90522_set_frontend(struct dvb_frontend *fe) |
|
{ |
|
struct tc90522_state *state; |
|
int ret; |
|
|
|
state = fe->demodulator_priv; |
|
|
|
if (fe->ops.tuner_ops.set_params) |
|
ret = fe->ops.tuner_ops.set_params(fe); |
|
else |
|
ret = -ENODEV; |
|
if (ret < 0) |
|
goto failed; |
|
|
|
if (fe->ops.delsys[0] == SYS_ISDBS) { |
|
ret = tc90522s_set_tsid(fe); |
|
if (ret < 0) |
|
goto failed; |
|
ret = reg_write(state, &reset_sat, 1); |
|
} else { |
|
ret = tc90522t_set_layers(fe); |
|
if (ret < 0) |
|
goto failed; |
|
ret = reg_write(state, &reset_ter, 1); |
|
} |
|
if (ret < 0) |
|
goto failed; |
|
|
|
return 0; |
|
|
|
failed: |
|
dev_warn(&state->tuner_i2c.dev, "(%s) failed. [adap%d-fe%d]\n", |
|
__func__, fe->dvb->num, fe->id); |
|
return ret; |
|
} |
|
|
|
static int tc90522_get_tune_settings(struct dvb_frontend *fe, |
|
struct dvb_frontend_tune_settings *settings) |
|
{ |
|
if (fe->ops.delsys[0] == SYS_ISDBS) { |
|
settings->min_delay_ms = 250; |
|
settings->step_size = 1000; |
|
settings->max_drift = settings->step_size * 2; |
|
} else { |
|
settings->min_delay_ms = 400; |
|
settings->step_size = 142857; |
|
settings->max_drift = settings->step_size; |
|
} |
|
return 0; |
|
} |
|
|
|
static int tc90522_set_if_agc(struct dvb_frontend *fe, bool on) |
|
{ |
|
struct reg_val agc_sat[] = { |
|
{ 0x0a, 0x00 }, |
|
{ 0x10, 0x30 }, |
|
{ 0x11, 0x00 }, |
|
{ 0x03, 0x01 }, |
|
}; |
|
struct reg_val agc_ter[] = { |
|
{ 0x25, 0x00 }, |
|
{ 0x23, 0x4c }, |
|
{ 0x01, 0x40 }, |
|
}; |
|
struct tc90522_state *state; |
|
struct reg_val *rv; |
|
int num; |
|
|
|
state = fe->demodulator_priv; |
|
if (fe->ops.delsys[0] == SYS_ISDBS) { |
|
agc_sat[0].val = on ? 0xff : 0x00; |
|
agc_sat[1].val |= 0x80; |
|
agc_sat[1].val |= on ? 0x01 : 0x00; |
|
agc_sat[2].val |= on ? 0x40 : 0x00; |
|
rv = agc_sat; |
|
num = ARRAY_SIZE(agc_sat); |
|
} else { |
|
agc_ter[0].val = on ? 0x40 : 0x00; |
|
agc_ter[1].val |= on ? 0x00 : 0x01; |
|
rv = agc_ter; |
|
num = ARRAY_SIZE(agc_ter); |
|
} |
|
return reg_write(state, rv, num); |
|
} |
|
|
|
static const struct reg_val sleep_sat = { 0x17, 0x01 }; |
|
static const struct reg_val sleep_ter = { 0x03, 0x90 }; |
|
|
|
static int tc90522_sleep(struct dvb_frontend *fe) |
|
{ |
|
struct tc90522_state *state; |
|
int ret; |
|
|
|
state = fe->demodulator_priv; |
|
if (fe->ops.delsys[0] == SYS_ISDBS) |
|
ret = reg_write(state, &sleep_sat, 1); |
|
else { |
|
ret = reg_write(state, &sleep_ter, 1); |
|
if (ret == 0 && fe->ops.set_lna && |
|
fe->dtv_property_cache.lna == LNA_AUTO) { |
|
fe->dtv_property_cache.lna = 0; |
|
ret = fe->ops.set_lna(fe); |
|
fe->dtv_property_cache.lna = LNA_AUTO; |
|
} |
|
} |
|
if (ret < 0) |
|
dev_warn(&state->tuner_i2c.dev, |
|
"(%s) failed. [adap%d-fe%d]\n", |
|
__func__, fe->dvb->num, fe->id); |
|
return ret; |
|
} |
|
|
|
static const struct reg_val wakeup_sat = { 0x17, 0x00 }; |
|
static const struct reg_val wakeup_ter = { 0x03, 0x80 }; |
|
|
|
static int tc90522_init(struct dvb_frontend *fe) |
|
{ |
|
struct tc90522_state *state; |
|
int ret; |
|
|
|
/* |
|
* Because the init sequence is not public, |
|
* the parent device/driver should have init'ed the device before. |
|
* just wake up the device here. |
|
*/ |
|
|
|
state = fe->demodulator_priv; |
|
if (fe->ops.delsys[0] == SYS_ISDBS) |
|
ret = reg_write(state, &wakeup_sat, 1); |
|
else { |
|
ret = reg_write(state, &wakeup_ter, 1); |
|
if (ret == 0 && fe->ops.set_lna && |
|
fe->dtv_property_cache.lna == LNA_AUTO) { |
|
fe->dtv_property_cache.lna = 1; |
|
ret = fe->ops.set_lna(fe); |
|
fe->dtv_property_cache.lna = LNA_AUTO; |
|
} |
|
} |
|
if (ret < 0) { |
|
dev_warn(&state->tuner_i2c.dev, |
|
"(%s) failed. [adap%d-fe%d]\n", |
|
__func__, fe->dvb->num, fe->id); |
|
return ret; |
|
} |
|
|
|
/* prefer 'all-layers' to 'none' as a default */ |
|
if (fe->dtv_property_cache.isdbt_layer_enabled == 0) |
|
fe->dtv_property_cache.isdbt_layer_enabled = 7; |
|
return tc90522_set_if_agc(fe, true); |
|
} |
|
|
|
|
|
/* |
|
* tuner I2C adapter functions |
|
*/ |
|
|
|
static int |
|
tc90522_master_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) |
|
{ |
|
struct tc90522_state *state; |
|
struct i2c_msg *new_msgs; |
|
int i, j; |
|
int ret, rd_num; |
|
u8 wbuf[256]; |
|
u8 *p, *bufend; |
|
|
|
if (num <= 0) |
|
return -EINVAL; |
|
|
|
rd_num = 0; |
|
for (i = 0; i < num; i++) |
|
if (msgs[i].flags & I2C_M_RD) |
|
rd_num++; |
|
new_msgs = kmalloc_array(num + rd_num, sizeof(*new_msgs), GFP_KERNEL); |
|
if (!new_msgs) |
|
return -ENOMEM; |
|
|
|
state = i2c_get_adapdata(adap); |
|
p = wbuf; |
|
bufend = wbuf + sizeof(wbuf); |
|
for (i = 0, j = 0; i < num; i++, j++) { |
|
new_msgs[j].addr = state->i2c_client->addr; |
|
new_msgs[j].flags = msgs[i].flags; |
|
|
|
if (msgs[i].flags & I2C_M_RD) { |
|
new_msgs[j].flags &= ~I2C_M_RD; |
|
if (p + 2 > bufend) |
|
break; |
|
p[0] = TC90522_I2C_THRU_REG; |
|
p[1] = msgs[i].addr << 1 | 0x01; |
|
new_msgs[j].buf = p; |
|
new_msgs[j].len = 2; |
|
p += 2; |
|
j++; |
|
new_msgs[j].addr = state->i2c_client->addr; |
|
new_msgs[j].flags = msgs[i].flags; |
|
new_msgs[j].buf = msgs[i].buf; |
|
new_msgs[j].len = msgs[i].len; |
|
continue; |
|
} |
|
|
|
if (p + msgs[i].len + 2 > bufend) |
|
break; |
|
p[0] = TC90522_I2C_THRU_REG; |
|
p[1] = msgs[i].addr << 1; |
|
memcpy(p + 2, msgs[i].buf, msgs[i].len); |
|
new_msgs[j].buf = p; |
|
new_msgs[j].len = msgs[i].len + 2; |
|
p += new_msgs[j].len; |
|
} |
|
|
|
if (i < num) { |
|
ret = -ENOMEM; |
|
} else if (!state->cfg.split_tuner_read_i2c || rd_num == 0) { |
|
ret = i2c_transfer(state->i2c_client->adapter, new_msgs, j); |
|
} else { |
|
/* |
|
* Split transactions at each I2C_M_RD message. |
|
* Some of the parent device require this, |
|
* such as Friio (see. dvb-usb-gl861). |
|
*/ |
|
int from, to; |
|
|
|
ret = 0; |
|
from = 0; |
|
do { |
|
int r; |
|
|
|
to = from + 1; |
|
while (to < j && !(new_msgs[to].flags & I2C_M_RD)) |
|
to++; |
|
r = i2c_transfer(state->i2c_client->adapter, |
|
&new_msgs[from], to - from); |
|
ret = (r <= 0) ? r : ret + r; |
|
from = to; |
|
} while (from < j && ret > 0); |
|
} |
|
|
|
if (ret >= 0 && ret < j) |
|
ret = -EIO; |
|
kfree(new_msgs); |
|
return (ret == j) ? num : ret; |
|
} |
|
|
|
static u32 tc90522_functionality(struct i2c_adapter *adap) |
|
{ |
|
return I2C_FUNC_I2C; |
|
} |
|
|
|
static const struct i2c_algorithm tc90522_tuner_i2c_algo = { |
|
.master_xfer = &tc90522_master_xfer, |
|
.functionality = &tc90522_functionality, |
|
}; |
|
|
|
|
|
/* |
|
* I2C driver functions |
|
*/ |
|
|
|
static const struct dvb_frontend_ops tc90522_ops_sat = { |
|
.delsys = { SYS_ISDBS }, |
|
.info = { |
|
.name = "Toshiba TC90522 ISDB-S module", |
|
.frequency_min_hz = 950 * MHz, |
|
.frequency_max_hz = 2150 * MHz, |
|
.caps = FE_CAN_INVERSION_AUTO | FE_CAN_FEC_AUTO | |
|
FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO | |
|
FE_CAN_GUARD_INTERVAL_AUTO | FE_CAN_HIERARCHY_AUTO, |
|
}, |
|
|
|
.init = tc90522_init, |
|
.sleep = tc90522_sleep, |
|
.set_frontend = tc90522_set_frontend, |
|
.get_tune_settings = tc90522_get_tune_settings, |
|
|
|
.get_frontend = tc90522s_get_frontend, |
|
.read_status = tc90522s_read_status, |
|
}; |
|
|
|
static const struct dvb_frontend_ops tc90522_ops_ter = { |
|
.delsys = { SYS_ISDBT }, |
|
.info = { |
|
.name = "Toshiba TC90522 ISDB-T module", |
|
.frequency_min_hz = 470 * MHz, |
|
.frequency_max_hz = 770 * MHz, |
|
.frequency_stepsize_hz = 142857, |
|
.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, |
|
}, |
|
|
|
.init = tc90522_init, |
|
.sleep = tc90522_sleep, |
|
.set_frontend = tc90522_set_frontend, |
|
.get_tune_settings = tc90522_get_tune_settings, |
|
|
|
.get_frontend = tc90522t_get_frontend, |
|
.read_status = tc90522t_read_status, |
|
}; |
|
|
|
|
|
static int tc90522_probe(struct i2c_client *client, |
|
const struct i2c_device_id *id) |
|
{ |
|
struct tc90522_state *state; |
|
struct tc90522_config *cfg; |
|
const struct dvb_frontend_ops *ops; |
|
struct i2c_adapter *adap; |
|
int ret; |
|
|
|
state = kzalloc(sizeof(*state), GFP_KERNEL); |
|
if (!state) |
|
return -ENOMEM; |
|
state->i2c_client = client; |
|
|
|
cfg = client->dev.platform_data; |
|
memcpy(&state->cfg, cfg, sizeof(state->cfg)); |
|
cfg->fe = state->cfg.fe = &state->fe; |
|
ops = id->driver_data == 0 ? &tc90522_ops_sat : &tc90522_ops_ter; |
|
memcpy(&state->fe.ops, ops, sizeof(*ops)); |
|
state->fe.demodulator_priv = state; |
|
|
|
adap = &state->tuner_i2c; |
|
adap->owner = THIS_MODULE; |
|
adap->algo = &tc90522_tuner_i2c_algo; |
|
adap->dev.parent = &client->dev; |
|
strscpy(adap->name, "tc90522_sub", sizeof(adap->name)); |
|
i2c_set_adapdata(adap, state); |
|
ret = i2c_add_adapter(adap); |
|
if (ret < 0) |
|
goto free_state; |
|
cfg->tuner_i2c = state->cfg.tuner_i2c = adap; |
|
|
|
i2c_set_clientdata(client, &state->cfg); |
|
dev_info(&client->dev, "Toshiba TC90522 attached.\n"); |
|
return 0; |
|
free_state: |
|
kfree(state); |
|
return ret; |
|
} |
|
|
|
static int tc90522_remove(struct i2c_client *client) |
|
{ |
|
struct tc90522_state *state; |
|
|
|
state = cfg_to_state(i2c_get_clientdata(client)); |
|
i2c_del_adapter(&state->tuner_i2c); |
|
kfree(state); |
|
return 0; |
|
} |
|
|
|
|
|
static const struct i2c_device_id tc90522_id[] = { |
|
{ TC90522_I2C_DEV_SAT, 0 }, |
|
{ TC90522_I2C_DEV_TER, 1 }, |
|
{} |
|
}; |
|
MODULE_DEVICE_TABLE(i2c, tc90522_id); |
|
|
|
static struct i2c_driver tc90522_driver = { |
|
.driver = { |
|
.name = "tc90522", |
|
}, |
|
.probe = tc90522_probe, |
|
.remove = tc90522_remove, |
|
.id_table = tc90522_id, |
|
}; |
|
|
|
module_i2c_driver(tc90522_driver); |
|
|
|
MODULE_DESCRIPTION("Toshiba TC90522 frontend"); |
|
MODULE_AUTHOR("Akihiro TSUKADA"); |
|
MODULE_LICENSE("GPL");
|
|
|