| /* |
| Driver for ST STV0288 demodulator |
| Copyright (C) 2006 Georg Acher, BayCom GmbH, acher (at) baycom (dot) de |
| for Reel Multimedia |
| Copyright (C) 2008 TurboSight.com, Bob Liu <bob@turbosight.com> |
| Copyright (C) 2008 Igor M. Liplianin <liplianin@me.by> |
| Removed stb6000 specific tuner code and revised some |
| procedures. |
| |
| 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. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| |
| */ |
| |
| #include <linux/init.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/string.h> |
| #include <linux/slab.h> |
| #include <linux/jiffies.h> |
| #include <asm/div64.h> |
| |
| #include "dvb_frontend.h" |
| #include "stv0288.h" |
| |
| struct stv0288_state { |
| struct i2c_adapter *i2c; |
| const struct stv0288_config *config; |
| struct dvb_frontend frontend; |
| |
| u8 initialised:1; |
| u32 tuner_frequency; |
| u32 symbol_rate; |
| fe_code_rate_t fec_inner; |
| int errmode; |
| }; |
| |
| #define STATUS_BER 0 |
| #define STATUS_UCBLOCKS 1 |
| |
| static int debug; |
| static int debug_legacy_dish_switch; |
| #define dprintk(args...) \ |
| do { \ |
| if (debug) \ |
| printk(KERN_DEBUG "stv0288: " args); \ |
| } while (0) |
| |
| |
| static int stv0288_writeregI(struct stv0288_state *state, u8 reg, u8 data) |
| { |
| int ret; |
| u8 buf[] = { reg, data }; |
| struct i2c_msg msg = { |
| .addr = state->config->demod_address, |
| .flags = 0, |
| .buf = buf, |
| .len = 2 |
| }; |
| |
| ret = i2c_transfer(state->i2c, &msg, 1); |
| |
| if (ret != 1) |
| dprintk("%s: writereg error (reg == 0x%02x, val == 0x%02x, " |
| "ret == %i)\n", __func__, reg, data, ret); |
| |
| return (ret != 1) ? -EREMOTEIO : 0; |
| } |
| |
| static int stv0288_write(struct dvb_frontend *fe, const u8 buf[], int len) |
| { |
| struct stv0288_state *state = fe->demodulator_priv; |
| |
| if (len != 2) |
| return -EINVAL; |
| |
| return stv0288_writeregI(state, buf[0], buf[1]); |
| } |
| |
| static u8 stv0288_readreg(struct stv0288_state *state, u8 reg) |
| { |
| int ret; |
| u8 b0[] = { reg }; |
| u8 b1[] = { 0 }; |
| struct i2c_msg msg[] = { |
| { |
| .addr = state->config->demod_address, |
| .flags = 0, |
| .buf = b0, |
| .len = 1 |
| }, { |
| .addr = state->config->demod_address, |
| .flags = I2C_M_RD, |
| .buf = b1, |
| .len = 1 |
| } |
| }; |
| |
| ret = i2c_transfer(state->i2c, msg, 2); |
| |
| if (ret != 2) |
| dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n", |
| __func__, reg, ret); |
| |
| return b1[0]; |
| } |
| |
| static int stv0288_set_symbolrate(struct dvb_frontend *fe, u32 srate) |
| { |
| struct stv0288_state *state = fe->demodulator_priv; |
| unsigned int temp; |
| unsigned char b[3]; |
| |
| if ((srate < 1000000) || (srate > 45000000)) |
| return -EINVAL; |
| |
| temp = (unsigned int)srate / 1000; |
| |
| temp = temp * 32768; |
| temp = temp / 25; |
| temp = temp / 125; |
| b[0] = (unsigned char)((temp >> 12) & 0xff); |
| b[1] = (unsigned char)((temp >> 4) & 0xff); |
| b[2] = (unsigned char)((temp << 4) & 0xf0); |
| stv0288_writeregI(state, 0x28, 0x80); /* SFRH */ |
| stv0288_writeregI(state, 0x29, 0); /* SFRM */ |
| stv0288_writeregI(state, 0x2a, 0); /* SFRL */ |
| |
| stv0288_writeregI(state, 0x28, b[0]); |
| stv0288_writeregI(state, 0x29, b[1]); |
| stv0288_writeregI(state, 0x2a, b[2]); |
| dprintk("stv0288: stv0288_set_symbolrate\n"); |
| |
| return 0; |
| } |
| |
| static int stv0288_send_diseqc_msg(struct dvb_frontend *fe, |
| struct dvb_diseqc_master_cmd *m) |
| { |
| struct stv0288_state *state = fe->demodulator_priv; |
| |
| int i; |
| |
| dprintk("%s\n", __func__); |
| |
| stv0288_writeregI(state, 0x09, 0); |
| msleep(30); |
| stv0288_writeregI(state, 0x05, 0x16); |
| |
| for (i = 0; i < m->msg_len; i++) { |
| if (stv0288_writeregI(state, 0x06, m->msg[i])) |
| return -EREMOTEIO; |
| msleep(12); |
| } |
| |
| return 0; |
| } |
| |
| static int stv0288_send_diseqc_burst(struct dvb_frontend *fe, |
| fe_sec_mini_cmd_t burst) |
| { |
| struct stv0288_state *state = fe->demodulator_priv; |
| |
| dprintk("%s\n", __func__); |
| |
| if (stv0288_writeregI(state, 0x05, 0x16))/* burst mode */ |
| return -EREMOTEIO; |
| |
| if (stv0288_writeregI(state, 0x06, burst == SEC_MINI_A ? 0x00 : 0xff)) |
| return -EREMOTEIO; |
| |
| if (stv0288_writeregI(state, 0x06, 0x12)) |
| return -EREMOTEIO; |
| |
| return 0; |
| } |
| |
| static int stv0288_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t tone) |
| { |
| struct stv0288_state *state = fe->demodulator_priv; |
| |
| switch (tone) { |
| case SEC_TONE_ON: |
| if (stv0288_writeregI(state, 0x05, 0x10))/* burst mode */ |
| return -EREMOTEIO; |
| return stv0288_writeregI(state, 0x06, 0xff); |
| |
| case SEC_TONE_OFF: |
| if (stv0288_writeregI(state, 0x05, 0x13))/* burst mode */ |
| return -EREMOTEIO; |
| return stv0288_writeregI(state, 0x06, 0x00); |
| |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| static u8 stv0288_inittab[] = { |
| 0x01, 0x15, |
| 0x02, 0x20, |
| 0x09, 0x0, |
| 0x0a, 0x4, |
| 0x0b, 0x0, |
| 0x0c, 0x0, |
| 0x0d, 0x0, |
| 0x0e, 0xd4, |
| 0x0f, 0x30, |
| 0x11, 0x80, |
| 0x12, 0x03, |
| 0x13, 0x48, |
| 0x14, 0x84, |
| 0x15, 0x45, |
| 0x16, 0xb7, |
| 0x17, 0x9c, |
| 0x18, 0x0, |
| 0x19, 0xa6, |
| 0x1a, 0x88, |
| 0x1b, 0x8f, |
| 0x1c, 0xf0, |
| 0x20, 0x0b, |
| 0x21, 0x54, |
| 0x22, 0x0, |
| 0x23, 0x0, |
| 0x2b, 0xff, |
| 0x2c, 0xf7, |
| 0x30, 0x0, |
| 0x31, 0x1e, |
| 0x32, 0x14, |
| 0x33, 0x0f, |
| 0x34, 0x09, |
| 0x35, 0x0c, |
| 0x36, 0x05, |
| 0x37, 0x2f, |
| 0x38, 0x16, |
| 0x39, 0xbe, |
| 0x3a, 0x0, |
| 0x3b, 0x13, |
| 0x3c, 0x11, |
| 0x3d, 0x30, |
| 0x40, 0x63, |
| 0x41, 0x04, |
| 0x42, 0x60, |
| 0x43, 0x00, |
| 0x44, 0x00, |
| 0x45, 0x00, |
| 0x46, 0x00, |
| 0x47, 0x00, |
| 0x4a, 0x00, |
| 0x50, 0x10, |
| 0x51, 0x38, |
| 0x52, 0x21, |
| 0x58, 0x54, |
| 0x59, 0x86, |
| 0x5a, 0x0, |
| 0x5b, 0x9b, |
| 0x5c, 0x08, |
| 0x5d, 0x7f, |
| 0x5e, 0x0, |
| 0x5f, 0xff, |
| 0x70, 0x0, |
| 0x71, 0x0, |
| 0x72, 0x0, |
| 0x74, 0x0, |
| 0x75, 0x0, |
| 0x76, 0x0, |
| 0x81, 0x0, |
| 0x82, 0x3f, |
| 0x83, 0x3f, |
| 0x84, 0x0, |
| 0x85, 0x0, |
| 0x88, 0x0, |
| 0x89, 0x0, |
| 0x8a, 0x0, |
| 0x8b, 0x0, |
| 0x8c, 0x0, |
| 0x90, 0x0, |
| 0x91, 0x0, |
| 0x92, 0x0, |
| 0x93, 0x0, |
| 0x94, 0x1c, |
| 0x97, 0x0, |
| 0xa0, 0x48, |
| 0xa1, 0x0, |
| 0xb0, 0xb8, |
| 0xb1, 0x3a, |
| 0xb2, 0x10, |
| 0xb3, 0x82, |
| 0xb4, 0x80, |
| 0xb5, 0x82, |
| 0xb6, 0x82, |
| 0xb7, 0x82, |
| 0xb8, 0x20, |
| 0xb9, 0x0, |
| 0xf0, 0x0, |
| 0xf1, 0x0, |
| 0xf2, 0xc0, |
| 0x51, 0x36, |
| 0x52, 0x09, |
| 0x53, 0x94, |
| 0x54, 0x62, |
| 0x55, 0x29, |
| 0x56, 0x64, |
| 0x57, 0x2b, |
| 0xff, 0xff, |
| }; |
| |
| static int stv0288_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t volt) |
| { |
| dprintk("%s: %s\n", __func__, |
| volt == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" : |
| volt == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" : "??"); |
| |
| return 0; |
| } |
| |
| static int stv0288_init(struct dvb_frontend *fe) |
| { |
| struct stv0288_state *state = fe->demodulator_priv; |
| int i; |
| u8 reg; |
| u8 val; |
| |
| dprintk("stv0288: init chip\n"); |
| stv0288_writeregI(state, 0x41, 0x04); |
| msleep(50); |
| |
| /* we have default inittab */ |
| if (state->config->inittab == NULL) { |
| for (i = 0; !(stv0288_inittab[i] == 0xff && |
| stv0288_inittab[i + 1] == 0xff); i += 2) |
| stv0288_writeregI(state, stv0288_inittab[i], |
| stv0288_inittab[i + 1]); |
| } else { |
| for (i = 0; ; i += 2) { |
| reg = state->config->inittab[i]; |
| val = state->config->inittab[i+1]; |
| if (reg == 0xff && val == 0xff) |
| break; |
| stv0288_writeregI(state, reg, val); |
| } |
| } |
| return 0; |
| } |
| |
| static int stv0288_read_status(struct dvb_frontend *fe, fe_status_t *status) |
| { |
| struct stv0288_state *state = fe->demodulator_priv; |
| |
| u8 sync = stv0288_readreg(state, 0x24); |
| if (sync == 255) |
| sync = 0; |
| |
| dprintk("%s : FE_READ_STATUS : VSTATUS: 0x%02x\n", __func__, sync); |
| |
| *status = 0; |
| |
| if ((sync & 0x08) == 0x08) { |
| *status |= FE_HAS_LOCK; |
| dprintk("stv0288 has locked\n"); |
| } |
| |
| return 0; |
| } |
| |
| static int stv0288_read_ber(struct dvb_frontend *fe, u32 *ber) |
| { |
| struct stv0288_state *state = fe->demodulator_priv; |
| |
| if (state->errmode != STATUS_BER) |
| return 0; |
| *ber = (stv0288_readreg(state, 0x26) << 8) | |
| stv0288_readreg(state, 0x27); |
| dprintk("stv0288_read_ber %d\n", *ber); |
| |
| return 0; |
| } |
| |
| |
| static int stv0288_read_signal_strength(struct dvb_frontend *fe, u16 *strength) |
| { |
| struct stv0288_state *state = fe->demodulator_priv; |
| |
| s32 signal = 0xffff - ((stv0288_readreg(state, 0x10) << 8)); |
| |
| |
| signal = signal * 5 / 4; |
| *strength = (signal > 0xffff) ? 0xffff : (signal < 0) ? 0 : signal; |
| dprintk("stv0288_read_signal_strength %d\n", *strength); |
| |
| return 0; |
| } |
| static int stv0288_sleep(struct dvb_frontend *fe) |
| { |
| struct stv0288_state *state = fe->demodulator_priv; |
| |
| stv0288_writeregI(state, 0x41, 0x84); |
| state->initialised = 0; |
| |
| return 0; |
| } |
| static int stv0288_read_snr(struct dvb_frontend *fe, u16 *snr) |
| { |
| struct stv0288_state *state = fe->demodulator_priv; |
| |
| s32 xsnr = 0xffff - ((stv0288_readreg(state, 0x2d) << 8) |
| | stv0288_readreg(state, 0x2e)); |
| xsnr = 3 * (xsnr - 0xa100); |
| *snr = (xsnr > 0xffff) ? 0xffff : (xsnr < 0) ? 0 : xsnr; |
| dprintk("stv0288_read_snr %d\n", *snr); |
| |
| return 0; |
| } |
| |
| static int stv0288_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) |
| { |
| struct stv0288_state *state = fe->demodulator_priv; |
| |
| if (state->errmode != STATUS_BER) |
| return 0; |
| *ucblocks = (stv0288_readreg(state, 0x26) << 8) | |
| stv0288_readreg(state, 0x27); |
| dprintk("stv0288_read_ber %d\n", *ucblocks); |
| |
| return 0; |
| } |
| |
| static int stv0288_set_property(struct dvb_frontend *fe, struct dtv_property *p) |
| { |
| dprintk("%s(..)\n", __func__); |
| return 0; |
| } |
| |
| static int stv0288_get_property(struct dvb_frontend *fe, struct dtv_property *p) |
| { |
| dprintk("%s(..)\n", __func__); |
| return 0; |
| } |
| |
| static int stv0288_set_frontend(struct dvb_frontend *fe, |
| struct dvb_frontend_parameters *dfp) |
| { |
| struct stv0288_state *state = fe->demodulator_priv; |
| struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
| |
| char tm; |
| unsigned char tda[3]; |
| |
| dprintk("%s : FE_SET_FRONTEND\n", __func__); |
| |
| if (c->delivery_system != SYS_DVBS) { |
| dprintk("%s: unsupported delivery " |
| "system selected (%d)\n", |
| __func__, c->delivery_system); |
| return -EOPNOTSUPP; |
| } |
| |
| if (state->config->set_ts_params) |
| state->config->set_ts_params(fe, 0); |
| |
| /* only frequency & symbol_rate are used for tuner*/ |
| dfp->frequency = c->frequency; |
| dfp->u.qpsk.symbol_rate = c->symbol_rate; |
| if (fe->ops.tuner_ops.set_params) { |
| fe->ops.tuner_ops.set_params(fe, dfp); |
| if (fe->ops.i2c_gate_ctrl) |
| fe->ops.i2c_gate_ctrl(fe, 0); |
| } |
| |
| udelay(10); |
| stv0288_set_symbolrate(fe, c->symbol_rate); |
| /* Carrier lock control register */ |
| stv0288_writeregI(state, 0x15, 0xc5); |
| |
| tda[0] = 0x2b; /* CFRM */ |
| tda[2] = 0x0; /* CFRL */ |
| for (tm = -6; tm < 7;) { |
| /* Viterbi status */ |
| if (stv0288_readreg(state, 0x24) & 0x8) |
| break; |
| |
| tda[2] += 40; |
| if (tda[2] < 40) |
| tm++; |
| tda[1] = (unsigned char)tm; |
| stv0288_writeregI(state, 0x2b, tda[1]); |
| stv0288_writeregI(state, 0x2c, tda[2]); |
| udelay(30); |
| } |
| |
| state->tuner_frequency = c->frequency; |
| state->fec_inner = FEC_AUTO; |
| state->symbol_rate = c->symbol_rate; |
| |
| return 0; |
| } |
| |
| static int stv0288_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) |
| { |
| struct stv0288_state *state = fe->demodulator_priv; |
| |
| if (enable) |
| stv0288_writeregI(state, 0x01, 0xb5); |
| else |
| stv0288_writeregI(state, 0x01, 0x35); |
| |
| udelay(1); |
| |
| return 0; |
| } |
| |
| static void stv0288_release(struct dvb_frontend *fe) |
| { |
| struct stv0288_state *state = fe->demodulator_priv; |
| kfree(state); |
| } |
| |
| static struct dvb_frontend_ops stv0288_ops = { |
| |
| .info = { |
| .name = "ST STV0288 DVB-S", |
| .type = FE_QPSK, |
| .frequency_min = 950000, |
| .frequency_max = 2150000, |
| .frequency_stepsize = 1000, /* kHz for QPSK frontends */ |
| .frequency_tolerance = 0, |
| .symbol_rate_min = 1000000, |
| .symbol_rate_max = 45000000, |
| .symbol_rate_tolerance = 500, /* ppm */ |
| .caps = 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_QPSK | |
| FE_CAN_FEC_AUTO |
| }, |
| |
| .release = stv0288_release, |
| .init = stv0288_init, |
| .sleep = stv0288_sleep, |
| .write = stv0288_write, |
| .i2c_gate_ctrl = stv0288_i2c_gate_ctrl, |
| .read_status = stv0288_read_status, |
| .read_ber = stv0288_read_ber, |
| .read_signal_strength = stv0288_read_signal_strength, |
| .read_snr = stv0288_read_snr, |
| .read_ucblocks = stv0288_read_ucblocks, |
| .diseqc_send_master_cmd = stv0288_send_diseqc_msg, |
| .diseqc_send_burst = stv0288_send_diseqc_burst, |
| .set_tone = stv0288_set_tone, |
| .set_voltage = stv0288_set_voltage, |
| |
| .set_property = stv0288_set_property, |
| .get_property = stv0288_get_property, |
| .set_frontend = stv0288_set_frontend, |
| }; |
| |
| struct dvb_frontend *stv0288_attach(const struct stv0288_config *config, |
| struct i2c_adapter *i2c) |
| { |
| struct stv0288_state *state = NULL; |
| int id; |
| |
| /* allocate memory for the internal state */ |
| state = kzalloc(sizeof(struct stv0288_state), GFP_KERNEL); |
| if (state == NULL) |
| goto error; |
| |
| /* setup the state */ |
| state->config = config; |
| state->i2c = i2c; |
| state->initialised = 0; |
| state->tuner_frequency = 0; |
| state->symbol_rate = 0; |
| state->fec_inner = 0; |
| state->errmode = STATUS_BER; |
| |
| stv0288_writeregI(state, 0x41, 0x04); |
| msleep(200); |
| id = stv0288_readreg(state, 0x00); |
| dprintk("stv0288 id %x\n", id); |
| |
| /* register 0x00 contains 0x11 for STV0288 */ |
| if (id != 0x11) |
| goto error; |
| |
| /* create dvb_frontend */ |
| memcpy(&state->frontend.ops, &stv0288_ops, |
| sizeof(struct dvb_frontend_ops)); |
| state->frontend.demodulator_priv = state; |
| return &state->frontend; |
| |
| error: |
| kfree(state); |
| |
| return NULL; |
| } |
| EXPORT_SYMBOL(stv0288_attach); |
| |
| module_param(debug_legacy_dish_switch, int, 0444); |
| MODULE_PARM_DESC(debug_legacy_dish_switch, |
| "Enable timing analysis for Dish Network legacy switches"); |
| |
| module_param(debug, int, 0644); |
| MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); |
| |
| MODULE_DESCRIPTION("ST STV0288 DVB Demodulator driver"); |
| MODULE_AUTHOR("Georg Acher, Bob Liu, Igor liplianin"); |
| MODULE_LICENSE("GPL"); |
| |