| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Fred Richter | 7425 | 80.30% | 1 | 2.50% |
| Mauro Carvalho Chehab | 687 | 7.43% | 12 | 30.00% |
| Kevin Cheng | 447 | 4.83% | 1 | 2.50% |
| Michael Ira Krufky | 422 | 4.56% | 6 | 15.00% |
| Brad Love | 225 | 2.43% | 6 | 15.00% |
| Zheyu Ma | 19 | 0.21% | 1 | 2.50% |
| Thomas Meyer | 4 | 0.04% | 1 | 2.50% |
| Max Kellermann | 2 | 0.02% | 1 | 2.50% |
| Gustavo A. R. Silva | 2 | 0.02% | 1 | 2.50% |
| Luc Van Oostenryck | 2 | 0.02% | 1 | 2.50% |
| Uwe Kleine-König | 2 | 0.02% | 2 | 5.00% |
| Thomas Gleixner | 2 | 0.02% | 1 | 2.50% |
| Kangjie Lu | 2 | 0.02% | 1 | 2.50% |
| Greg Kroah-Hartman | 1 | 0.01% | 1 | 2.50% |
| zhong jiang | 1 | 0.01% | 1 | 2.50% |
| Daniel W. S. Almeida | 1 | 0.01% | 1 | 2.50% |
| Andy Shevchenko | 1 | 0.01% | 1 | 2.50% |
| Colin Ian King | 1 | 0.01% | 1 | 2.50% |
| Total | 9246 | 40 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * Support for LGDT3306A - 8VSB/QAM-B * * Copyright (C) 2013 Fred Richter <frichter@hauppauge.com> * - driver structure based on lgdt3305.[ch] by Michael Krufky * - code based on LG3306_V0.35 API by LG Electronics Inc. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <asm/div64.h> #include <linux/kernel.h> #include <linux/dvb/frontend.h> #include <linux/int_log.h> #include "lgdt3306a.h" #include <linux/i2c-mux.h> static int debug; module_param(debug, int, 0644); MODULE_PARM_DESC(debug, "set debug level (info=1, reg=2 (or-able))"); /* * Older drivers treated QAM64 and QAM256 the same; that is the HW always * used "Auto" mode during detection. Setting "forced_manual"=1 allows * the user to treat these modes as separate. For backwards compatibility, * it's off by default. QAM_AUTO can now be specified to achive that * effect even if "forced_manual"=1 */ static int forced_manual; module_param(forced_manual, int, 0644); MODULE_PARM_DESC(forced_manual, "if set, QAM64 and QAM256 will only lock to modulation specified"); #define DBG_INFO 1 #define DBG_REG 2 #define DBG_DUMP 4 /* FGR - comment out to remove dump code */ #define lg_debug(fmt, arg...) \ printk(KERN_DEBUG pr_fmt(fmt), ## arg) #define dbg_info(fmt, arg...) \ do { \ if (debug & DBG_INFO) \ lg_debug(fmt, ## arg); \ } while (0) #define dbg_reg(fmt, arg...) \ do { \ if (debug & DBG_REG) \ lg_debug(fmt, ## arg); \ } while (0) #define lg_chkerr(ret) \ ({ \ int __ret; \ __ret = (ret < 0); \ if (__ret) \ pr_err("error %d on line %d\n", ret, __LINE__); \ __ret; \ }) struct lgdt3306a_state { struct i2c_adapter *i2c_adap; const struct lgdt3306a_config *cfg; struct dvb_frontend frontend; enum fe_modulation current_modulation; u32 current_frequency; u32 snr; struct i2c_mux_core *muxc; }; /* * LG3306A Register Usage * (LG does not really name the registers, so this code does not either) * * 0000 -> 00FF Common control and status * 1000 -> 10FF Synchronizer control and status * 1F00 -> 1FFF Smart Antenna control and status * 2100 -> 21FF VSB Equalizer control and status * 2800 -> 28FF QAM Equalizer control and status * 3000 -> 30FF FEC control and status */ enum lgdt3306a_lock_status { LG3306_UNLOCK = 0x00, LG3306_LOCK = 0x01, LG3306_UNKNOWN_LOCK = 0xff }; enum lgdt3306a_neverlock_status { LG3306_NL_INIT = 0x00, LG3306_NL_PROCESS = 0x01, LG3306_NL_LOCK = 0x02, LG3306_NL_FAIL = 0x03, LG3306_NL_UNKNOWN = 0xff }; enum lgdt3306a_modulation { LG3306_VSB = 0x00, LG3306_QAM64 = 0x01, LG3306_QAM256 = 0x02, LG3306_UNKNOWN_MODE = 0xff }; enum lgdt3306a_lock_check { LG3306_SYNC_LOCK, LG3306_FEC_LOCK, LG3306_TR_LOCK, LG3306_AGC_LOCK, }; #ifdef DBG_DUMP static void lgdt3306a_DumpAllRegs(struct lgdt3306a_state *state); static void lgdt3306a_DumpRegs(struct lgdt3306a_state *state); #endif static int lgdt3306a_write_reg(struct lgdt3306a_state *state, u16 reg, u8 val) { int ret; u8 buf[] = { reg >> 8, reg & 0xff, val }; struct i2c_msg msg = { .addr = state->cfg->i2c_addr, .flags = 0, .buf = buf, .len = 3, }; dbg_reg("reg: 0x%04x, val: 0x%02x\n", reg, val); ret = i2c_transfer(state->i2c_adap, &msg, 1); if (ret != 1) { pr_err("error (addr %02x %02x <- %02x, err = %i)\n", msg.buf[0], msg.buf[1], msg.buf[2], ret); if (ret < 0) return ret; else return -EREMOTEIO; } return 0; } static int lgdt3306a_read_reg(struct lgdt3306a_state *state, u16 reg, u8 *val) { int ret; u8 reg_buf[] = { reg >> 8, reg & 0xff }; struct i2c_msg msg[] = { { .addr = state->cfg->i2c_addr, .flags = 0, .buf = reg_buf, .len = 2 }, { .addr = state->cfg->i2c_addr, .flags = I2C_M_RD, .buf = val, .len = 1 }, }; ret = i2c_transfer(state->i2c_adap, msg, 2); if (ret != 2) { pr_err("error (addr %02x reg %04x error (ret == %i)\n", state->cfg->i2c_addr, reg, ret); if (ret < 0) return ret; else return -EREMOTEIO; } dbg_reg("reg: 0x%04x, val: 0x%02x\n", reg, *val); return 0; } #define read_reg(state, reg) \ ({ \ u8 __val; \ int ret = lgdt3306a_read_reg(state, reg, &__val); \ if (lg_chkerr(ret)) \ __val = 0; \ __val; \ }) static int lgdt3306a_set_reg_bit(struct lgdt3306a_state *state, u16 reg, int bit, int onoff) { u8 val; int ret; dbg_reg("reg: 0x%04x, bit: %d, level: %d\n", reg, bit, onoff); ret = lgdt3306a_read_reg(state, reg, &val); if (lg_chkerr(ret)) goto fail; val &= ~(1 << bit); val |= (onoff & 1) << bit; ret = lgdt3306a_write_reg(state, reg, val); lg_chkerr(ret); fail: return ret; } /* ------------------------------------------------------------------------ */ static int lgdt3306a_soft_reset(struct lgdt3306a_state *state) { int ret; dbg_info("\n"); ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 0); if (lg_chkerr(ret)) goto fail; msleep(20); ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 1); lg_chkerr(ret); fail: return ret; } static int lgdt3306a_mpeg_mode(struct lgdt3306a_state *state, enum lgdt3306a_mpeg_mode mode) { u8 val; int ret; dbg_info("(%d)\n", mode); /* transport packet format - TPSENB=0x80 */ ret = lgdt3306a_set_reg_bit(state, 0x0071, 7, mode == LGDT3306A_MPEG_PARALLEL ? 1 : 0); if (lg_chkerr(ret)) goto fail; /* * start of packet signal duration * TPSSOPBITEN=0x40; 0=byte duration, 1=bit duration */ ret = lgdt3306a_set_reg_bit(state, 0x0071, 6, 0); if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_read_reg(state, 0x0070, &val); if (lg_chkerr(ret)) goto fail; val |= 0x10; /* TPCLKSUPB=0x10 */ if (mode == LGDT3306A_MPEG_PARALLEL) val &= ~0x10; ret = lgdt3306a_write_reg(state, 0x0070, val); lg_chkerr(ret); fail: return ret; } static int lgdt3306a_mpeg_mode_polarity(struct lgdt3306a_state *state, enum lgdt3306a_tp_clock_edge edge, enum lgdt3306a_tp_valid_polarity valid) { u8 val; int ret; dbg_info("edge=%d, valid=%d\n", edge, valid); ret = lgdt3306a_read_reg(state, 0x0070, &val); if (lg_chkerr(ret)) goto fail; val &= ~0x06; /* TPCLKPOL=0x04, TPVALPOL=0x02 */ if (edge == LGDT3306A_TPCLK_RISING_EDGE) val |= 0x04; if (valid == LGDT3306A_TP_VALID_HIGH) val |= 0x02; ret = lgdt3306a_write_reg(state, 0x0070, val); lg_chkerr(ret); fail: return ret; } static int lgdt3306a_mpeg_tristate(struct lgdt3306a_state *state, int mode) { u8 val; int ret; dbg_info("(%d)\n", mode); if (mode) { ret = lgdt3306a_read_reg(state, 0x0070, &val); if (lg_chkerr(ret)) goto fail; /* * Tristate bus; TPOUTEN=0x80, TPCLKOUTEN=0x20, * TPDATAOUTEN=0x08 */ val &= ~0xa8; ret = lgdt3306a_write_reg(state, 0x0070, val); if (lg_chkerr(ret)) goto fail; /* AGCIFOUTENB=0x40; 1=Disable IFAGC pin */ ret = lgdt3306a_set_reg_bit(state, 0x0003, 6, 1); if (lg_chkerr(ret)) goto fail; } else { /* enable IFAGC pin */ ret = lgdt3306a_set_reg_bit(state, 0x0003, 6, 0); if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_read_reg(state, 0x0070, &val); if (lg_chkerr(ret)) goto fail; val |= 0xa8; /* enable bus */ ret = lgdt3306a_write_reg(state, 0x0070, val); if (lg_chkerr(ret)) goto fail; } fail: return ret; } static int lgdt3306a_ts_bus_ctrl(struct dvb_frontend *fe, int acquire) { struct lgdt3306a_state *state = fe->demodulator_priv; dbg_info("acquire=%d\n", acquire); return lgdt3306a_mpeg_tristate(state, acquire ? 0 : 1); } static int lgdt3306a_power(struct lgdt3306a_state *state, int mode) { int ret; dbg_info("(%d)\n", mode); if (mode == 0) { /* into reset */ ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 0); if (lg_chkerr(ret)) goto fail; /* power down */ ret = lgdt3306a_set_reg_bit(state, 0x0000, 0, 0); if (lg_chkerr(ret)) goto fail; } else { /* out of reset */ ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 1); if (lg_chkerr(ret)) goto fail; /* power up */ ret = lgdt3306a_set_reg_bit(state, 0x0000, 0, 1); if (lg_chkerr(ret)) goto fail; } #ifdef DBG_DUMP lgdt3306a_DumpAllRegs(state); #endif fail: return ret; } static int lgdt3306a_set_vsb(struct lgdt3306a_state *state) { u8 val; int ret; dbg_info("\n"); /* 0. Spectrum inversion detection manual; spectrum inverted */ ret = lgdt3306a_read_reg(state, 0x0002, &val); val &= 0xf7; /* SPECINVAUTO Off */ val |= 0x04; /* SPECINV On */ ret = lgdt3306a_write_reg(state, 0x0002, val); if (lg_chkerr(ret)) goto fail; /* 1. Selection of standard mode(0x08=QAM, 0x80=VSB) */ ret = lgdt3306a_write_reg(state, 0x0008, 0x80); if (lg_chkerr(ret)) goto fail; /* 2. Bandwidth mode for VSB(6MHz) */ ret = lgdt3306a_read_reg(state, 0x0009, &val); val &= 0xe3; val |= 0x0c; /* STDOPDETTMODE[2:0]=3 */ ret = lgdt3306a_write_reg(state, 0x0009, val); if (lg_chkerr(ret)) goto fail; /* 3. QAM mode detection mode(None) */ ret = lgdt3306a_read_reg(state, 0x0009, &val); val &= 0xfc; /* STDOPDETCMODE[1:0]=0 */ ret = lgdt3306a_write_reg(state, 0x0009, val); if (lg_chkerr(ret)) goto fail; /* 4. ADC sampling frequency rate(2x sampling) */ ret = lgdt3306a_read_reg(state, 0x000d, &val); val &= 0xbf; /* SAMPLING4XFEN=0 */ ret = lgdt3306a_write_reg(state, 0x000d, val); if (lg_chkerr(ret)) goto fail; #if 0 /* FGR - disable any AICC filtering, testing only */ ret = lgdt3306a_write_reg(state, 0x0024, 0x00); if (lg_chkerr(ret)) goto fail; /* AICCFIXFREQ0 NT N-1(Video rejection) */ ret = lgdt3306a_write_reg(state, 0x002e, 0x00); ret = lgdt3306a_write_reg(state, 0x002f, 0x00); ret = lgdt3306a_write_reg(state, 0x0030, 0x00); /* AICCFIXFREQ1 NT N-1(Audio rejection) */ ret = lgdt3306a_write_reg(state, 0x002b, 0x00); ret = lgdt3306a_write_reg(state, 0x002c, 0x00); ret = lgdt3306a_write_reg(state, 0x002d, 0x00); /* AICCFIXFREQ2 NT Co-Channel(Video rejection) */ ret = lgdt3306a_write_reg(state, 0x0028, 0x00); ret = lgdt3306a_write_reg(state, 0x0029, 0x00); ret = lgdt3306a_write_reg(state, 0x002a, 0x00); /* AICCFIXFREQ3 NT Co-Channel(Audio rejection) */ ret = lgdt3306a_write_reg(state, 0x0025, 0x00); ret = lgdt3306a_write_reg(state, 0x0026, 0x00); ret = lgdt3306a_write_reg(state, 0x0027, 0x00); #else /* FGR - this works well for HVR-1955,1975 */ /* 5. AICCOPMODE NT N-1 Adj. */ ret = lgdt3306a_write_reg(state, 0x0024, 0x5A); if (lg_chkerr(ret)) goto fail; /* AICCFIXFREQ0 NT N-1(Video rejection) */ ret = lgdt3306a_write_reg(state, 0x002e, 0x5A); ret = lgdt3306a_write_reg(state, 0x002f, 0x00); ret = lgdt3306a_write_reg(state, 0x0030, 0x00); /* AICCFIXFREQ1 NT N-1(Audio rejection) */ ret = lgdt3306a_write_reg(state, 0x002b, 0x36); ret = lgdt3306a_write_reg(state, 0x002c, 0x00); ret = lgdt3306a_write_reg(state, 0x002d, 0x00); /* AICCFIXFREQ2 NT Co-Channel(Video rejection) */ ret = lgdt3306a_write_reg(state, 0x0028, 0x2A); ret = lgdt3306a_write_reg(state, 0x0029, 0x00); ret = lgdt3306a_write_reg(state, 0x002a, 0x00); /* AICCFIXFREQ3 NT Co-Channel(Audio rejection) */ ret = lgdt3306a_write_reg(state, 0x0025, 0x06); ret = lgdt3306a_write_reg(state, 0x0026, 0x00); ret = lgdt3306a_write_reg(state, 0x0027, 0x00); #endif ret = lgdt3306a_read_reg(state, 0x001e, &val); val &= 0x0f; val |= 0xa0; ret = lgdt3306a_write_reg(state, 0x001e, val); ret = lgdt3306a_write_reg(state, 0x0022, 0x08); ret = lgdt3306a_write_reg(state, 0x0023, 0xFF); ret = lgdt3306a_read_reg(state, 0x211f, &val); val &= 0xef; ret = lgdt3306a_write_reg(state, 0x211f, val); ret = lgdt3306a_write_reg(state, 0x2173, 0x01); ret = lgdt3306a_read_reg(state, 0x1061, &val); val &= 0xf8; val |= 0x04; ret = lgdt3306a_write_reg(state, 0x1061, val); ret = lgdt3306a_read_reg(state, 0x103d, &val); val &= 0xcf; ret = lgdt3306a_write_reg(state, 0x103d, val); ret = lgdt3306a_write_reg(state, 0x2122, 0x40); ret = lgdt3306a_read_reg(state, 0x2141, &val); val &= 0x3f; ret = lgdt3306a_write_reg(state, 0x2141, val); ret = lgdt3306a_read_reg(state, 0x2135, &val); val &= 0x0f; val |= 0x70; ret = lgdt3306a_write_reg(state, 0x2135, val); ret = lgdt3306a_read_reg(state, 0x0003, &val); val &= 0xf7; ret = lgdt3306a_write_reg(state, 0x0003, val); ret = lgdt3306a_read_reg(state, 0x001c, &val); val &= 0x7f; ret = lgdt3306a_write_reg(state, 0x001c, val); /* 6. EQ step size */ ret = lgdt3306a_read_reg(state, 0x2179, &val); val &= 0xf8; ret = lgdt3306a_write_reg(state, 0x2179, val); ret = lgdt3306a_read_reg(state, 0x217a, &val); val &= 0xf8; ret = lgdt3306a_write_reg(state, 0x217a, val); /* 7. Reset */ ret = lgdt3306a_soft_reset(state); if (lg_chkerr(ret)) goto fail; dbg_info("complete\n"); fail: return ret; } static int lgdt3306a_set_qam(struct lgdt3306a_state *state, int modulation) { u8 val; int ret; dbg_info("modulation=%d\n", modulation); /* 1. Selection of standard mode(0x08=QAM, 0x80=VSB) */ ret = lgdt3306a_write_reg(state, 0x0008, 0x08); if (lg_chkerr(ret)) goto fail; /* 1a. Spectrum inversion detection to Auto */ ret = lgdt3306a_read_reg(state, 0x0002, &val); val &= 0xfb; /* SPECINV Off */ val |= 0x08; /* SPECINVAUTO On */ ret = lgdt3306a_write_reg(state, 0x0002, val); if (lg_chkerr(ret)) goto fail; /* 2. Bandwidth mode for QAM */ ret = lgdt3306a_read_reg(state, 0x0009, &val); val &= 0xe3; /* STDOPDETTMODE[2:0]=0 VSB Off */ ret = lgdt3306a_write_reg(state, 0x0009, val); if (lg_chkerr(ret)) goto fail; /* 3. : 64QAM/256QAM detection(manual, auto) */ ret = lgdt3306a_read_reg(state, 0x0009, &val); val &= 0xfc; /* Check for forced Manual modulation modes; otherwise always "auto" */ if(forced_manual && (modulation != QAM_AUTO)){ val |= 0x01; /* STDOPDETCMODE[1:0]= 1=Manual */ } else { val |= 0x02; /* STDOPDETCMODE[1:0]= 2=Auto */ } ret = lgdt3306a_write_reg(state, 0x0009, val); if (lg_chkerr(ret)) goto fail; /* 3a. : 64QAM/256QAM selection for manual */ ret = lgdt3306a_read_reg(state, 0x101a, &val); val &= 0xf8; if (modulation == QAM_64) val |= 0x02; /* QMDQMODE[2:0]=2=QAM64 */ else val |= 0x04; /* QMDQMODE[2:0]=4=QAM256 */ ret = lgdt3306a_write_reg(state, 0x101a, val); if (lg_chkerr(ret)) goto fail; /* 4. ADC sampling frequency rate(4x sampling) */ ret = lgdt3306a_read_reg(state, 0x000d, &val); val &= 0xbf; val |= 0x40; /* SAMPLING4XFEN=1 */ ret = lgdt3306a_write_reg(state, 0x000d, val); if (lg_chkerr(ret)) goto fail; /* 5. No AICC operation in QAM mode */ ret = lgdt3306a_read_reg(state, 0x0024, &val); val &= 0x00; ret = lgdt3306a_write_reg(state, 0x0024, val); if (lg_chkerr(ret)) goto fail; /* 5.1 V0.36 SRDCHKALWAYS : For better QAM detection */ ret = lgdt3306a_read_reg(state, 0x000a, &val); val &= 0xfd; val |= 0x02; ret = lgdt3306a_write_reg(state, 0x000a, val); if (lg_chkerr(ret)) goto fail; /* 5.2 V0.36 Control of "no signal" detector function */ ret = lgdt3306a_read_reg(state, 0x2849, &val); val &= 0xdf; ret = lgdt3306a_write_reg(state, 0x2849, val); if (lg_chkerr(ret)) goto fail; /* 5.3 Fix for Blonder Tongue HDE-2H-QAM and AQM modulators */ ret = lgdt3306a_read_reg(state, 0x302b, &val); val &= 0x7f; /* SELFSYNCFINDEN_CQS=0; disable auto reset */ ret = lgdt3306a_write_reg(state, 0x302b, val); if (lg_chkerr(ret)) goto fail; /* 6. Reset */ ret = lgdt3306a_soft_reset(state); if (lg_chkerr(ret)) goto fail; dbg_info("complete\n"); fail: return ret; } static int lgdt3306a_set_modulation(struct lgdt3306a_state *state, struct dtv_frontend_properties *p) { int ret; dbg_info("\n"); switch (p->modulation) { case VSB_8: ret = lgdt3306a_set_vsb(state); break; case QAM_64: case QAM_256: case QAM_AUTO: ret = lgdt3306a_set_qam(state, p->modulation); break; default: return -EINVAL; } if (lg_chkerr(ret)) goto fail; state->current_modulation = p->modulation; fail: return ret; } /* ------------------------------------------------------------------------ */ static int lgdt3306a_agc_setup(struct lgdt3306a_state *state, struct dtv_frontend_properties *p) { /* TODO: anything we want to do here??? */ dbg_info("\n"); switch (p->modulation) { case VSB_8: break; case QAM_64: case QAM_256: case QAM_AUTO: break; default: return -EINVAL; } return 0; } /* ------------------------------------------------------------------------ */ static int lgdt3306a_set_inversion(struct lgdt3306a_state *state, int inversion) { int ret; dbg_info("(%d)\n", inversion); ret = lgdt3306a_set_reg_bit(state, 0x0002, 2, inversion ? 1 : 0); return ret; } static int lgdt3306a_set_inversion_auto(struct lgdt3306a_state *state, int enabled) { int ret; dbg_info("(%d)\n", enabled); /* 0=Manual 1=Auto(QAM only) - SPECINVAUTO=0x04 */ ret = lgdt3306a_set_reg_bit(state, 0x0002, 3, enabled); return ret; } static int lgdt3306a_set_if(struct lgdt3306a_state *state, struct dtv_frontend_properties *p) { int ret; u16 if_freq_khz; u8 nco1, nco2; switch (p->modulation) { case VSB_8: if_freq_khz = state->cfg->vsb_if_khz; break; case QAM_64: case QAM_256: case QAM_AUTO: if_freq_khz = state->cfg->qam_if_khz; break; default: return -EINVAL; } switch (if_freq_khz) { default: pr_warn("IF=%d KHz is not supported, 3250 assumed\n", if_freq_khz); fallthrough; case 3250: /* 3.25Mhz */ nco1 = 0x34; nco2 = 0x00; break; case 3500: /* 3.50Mhz */ nco1 = 0x38; nco2 = 0x00; break; case 4000: /* 4.00Mhz */ nco1 = 0x40; nco2 = 0x00; break; case 5000: /* 5.00Mhz */ nco1 = 0x50; nco2 = 0x00; break; case 5380: /* 5.38Mhz */ nco1 = 0x56; nco2 = 0x14; break; } ret = lgdt3306a_write_reg(state, 0x0010, nco1); if (ret) return ret; ret = lgdt3306a_write_reg(state, 0x0011, nco2); if (ret) return ret; dbg_info("if_freq=%d KHz->[%04x]\n", if_freq_khz, nco1<<8 | nco2); return 0; } /* ------------------------------------------------------------------------ */ static int lgdt3306a_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) { struct lgdt3306a_state *state = fe->demodulator_priv; if (state->cfg->deny_i2c_rptr) { dbg_info("deny_i2c_rptr=%d\n", state->cfg->deny_i2c_rptr); return 0; } dbg_info("(%d)\n", enable); /* NI2CRPTEN=0x80 */ return lgdt3306a_set_reg_bit(state, 0x0002, 7, enable ? 0 : 1); } static int lgdt3306a_sleep(struct lgdt3306a_state *state) { int ret; dbg_info("\n"); state->current_frequency = -1; /* force re-tune, when we wake */ ret = lgdt3306a_mpeg_tristate(state, 1); /* disable data bus */ if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_power(state, 0); /* power down */ lg_chkerr(ret); fail: return 0; } static int lgdt3306a_fe_sleep(struct dvb_frontend *fe) { struct lgdt3306a_state *state = fe->demodulator_priv; return lgdt3306a_sleep(state); } static int lgdt3306a_init(struct dvb_frontend *fe) { struct lgdt3306a_state *state = fe->demodulator_priv; struct dtv_frontend_properties *c = &fe->dtv_property_cache; u8 val; int ret; dbg_info("\n"); /* 1. Normal operation mode */ ret = lgdt3306a_set_reg_bit(state, 0x0001, 0, 1); /* SIMFASTENB=0x01 */ if (lg_chkerr(ret)) goto fail; /* 2. Spectrum inversion auto detection (Not valid for VSB) */ ret = lgdt3306a_set_inversion_auto(state, 0); if (lg_chkerr(ret)) goto fail; /* 3. Spectrum inversion(According to the tuner configuration) */ ret = lgdt3306a_set_inversion(state, 1); if (lg_chkerr(ret)) goto fail; /* 4. Peak-to-peak voltage of ADC input signal */ /* ADCSEL1V=0x80=1Vpp; 0x00=2Vpp */ ret = lgdt3306a_set_reg_bit(state, 0x0004, 7, 1); if (lg_chkerr(ret)) goto fail; /* 5. ADC output data capture clock phase */ /* 0=same phase as ADC clock */ ret = lgdt3306a_set_reg_bit(state, 0x0004, 2, 0); if (lg_chkerr(ret)) goto fail; /* 5a. ADC sampling clock source */ /* ADCCLKPLLSEL=0x08; 0=use ext clock, not PLL */ ret = lgdt3306a_set_reg_bit(state, 0x0004, 3, 0); if (lg_chkerr(ret)) goto fail; /* 6. Automatic PLL set */ /* PLLSETAUTO=0x40; 0=off */ ret = lgdt3306a_set_reg_bit(state, 0x0005, 6, 0); if (lg_chkerr(ret)) goto fail; if (state->cfg->xtalMHz == 24) { /* 24MHz */ /* 7. Frequency for PLL output(0x2564 for 192MHz for 24MHz) */ ret = lgdt3306a_read_reg(state, 0x0005, &val); if (lg_chkerr(ret)) goto fail; val &= 0xc0; val |= 0x25; ret = lgdt3306a_write_reg(state, 0x0005, val); if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_write_reg(state, 0x0006, 0x64); if (lg_chkerr(ret)) goto fail; /* 8. ADC sampling frequency(0x180000 for 24MHz sampling) */ ret = lgdt3306a_read_reg(state, 0x000d, &val); if (lg_chkerr(ret)) goto fail; val &= 0xc0; val |= 0x18; ret = lgdt3306a_write_reg(state, 0x000d, val); if (lg_chkerr(ret)) goto fail; } else if (state->cfg->xtalMHz == 25) { /* 25MHz */ /* 7. Frequency for PLL output */ ret = lgdt3306a_read_reg(state, 0x0005, &val); if (lg_chkerr(ret)) goto fail; val &= 0xc0; val |= 0x25; ret = lgdt3306a_write_reg(state, 0x0005, val); if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_write_reg(state, 0x0006, 0x64); if (lg_chkerr(ret)) goto fail; /* 8. ADC sampling frequency(0x190000 for 25MHz sampling) */ ret = lgdt3306a_read_reg(state, 0x000d, &val); if (lg_chkerr(ret)) goto fail; val &= 0xc0; val |= 0x19; ret = lgdt3306a_write_reg(state, 0x000d, val); if (lg_chkerr(ret)) goto fail; } else { pr_err("Bad xtalMHz=%d\n", state->cfg->xtalMHz); } #if 0 ret = lgdt3306a_write_reg(state, 0x000e, 0x00); ret = lgdt3306a_write_reg(state, 0x000f, 0x00); #endif /* 9. Center frequency of input signal of ADC */ ret = lgdt3306a_write_reg(state, 0x0010, 0x34); /* 3.25MHz */ ret = lgdt3306a_write_reg(state, 0x0011, 0x00); /* 10. Fixed gain error value */ ret = lgdt3306a_write_reg(state, 0x0014, 0); /* gain error=0 */ /* 10a. VSB TR BW gear shift initial step */ ret = lgdt3306a_read_reg(state, 0x103c, &val); val &= 0x0f; val |= 0x20; /* SAMGSAUTOSTL_V[3:0] = 2 */ ret = lgdt3306a_write_reg(state, 0x103c, val); /* 10b. Timing offset calibration in low temperature for VSB */ ret = lgdt3306a_read_reg(state, 0x103d, &val); val &= 0xfc; val |= 0x03; ret = lgdt3306a_write_reg(state, 0x103d, val); /* 10c. Timing offset calibration in low temperature for QAM */ ret = lgdt3306a_read_reg(state, 0x1036, &val); val &= 0xf0; val |= 0x0c; ret = lgdt3306a_write_reg(state, 0x1036, val); /* 11. Using the imaginary part of CIR in CIR loading */ ret = lgdt3306a_read_reg(state, 0x211f, &val); val &= 0xef; /* do not use imaginary of CIR */ ret = lgdt3306a_write_reg(state, 0x211f, val); /* 12. Control of no signal detector function */ ret = lgdt3306a_read_reg(state, 0x2849, &val); val &= 0xef; /* NOUSENOSIGDET=0, enable no signal detector */ ret = lgdt3306a_write_reg(state, 0x2849, val); /* FGR - put demod in some known mode */ ret = lgdt3306a_set_vsb(state); /* 13. TP stream format */ ret = lgdt3306a_mpeg_mode(state, state->cfg->mpeg_mode); /* 14. disable output buses */ ret = lgdt3306a_mpeg_tristate(state, 1); /* 15. Sleep (in reset) */ ret = lgdt3306a_sleep(state); lg_chkerr(ret); c->cnr.len = 1; c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; fail: return ret; } static int lgdt3306a_set_parameters(struct dvb_frontend *fe) { struct dtv_frontend_properties *p = &fe->dtv_property_cache; struct lgdt3306a_state *state = fe->demodulator_priv; int ret; dbg_info("(%d, %d)\n", p->frequency, p->modulation); if (state->current_frequency == p->frequency && state->current_modulation == p->modulation) { dbg_info(" (already set, skipping ...)\n"); return 0; } state->current_frequency = -1; state->current_modulation = -1; ret = lgdt3306a_power(state, 1); /* power up */ if (lg_chkerr(ret)) goto fail; if (fe->ops.tuner_ops.set_params) { ret = fe->ops.tuner_ops.set_params(fe); if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); #if 0 if (lg_chkerr(ret)) goto fail; state->current_frequency = p->frequency; #endif } ret = lgdt3306a_set_modulation(state, p); if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_agc_setup(state, p); if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_set_if(state, p); if (lg_chkerr(ret)) goto fail; /* spectral_inversion defaults already set for VSB and QAM */ ret = lgdt3306a_mpeg_mode(state, state->cfg->mpeg_mode); if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_mpeg_mode_polarity(state, state->cfg->tpclk_edge, state->cfg->tpvalid_polarity); if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_mpeg_tristate(state, 0); /* enable data bus */ if (lg_chkerr(ret)) goto fail; ret = lgdt3306a_soft_reset(state); if (lg_chkerr(ret)) goto fail; #ifdef DBG_DUMP lgdt3306a_DumpAllRegs(state); #endif state->current_frequency = p->frequency; fail: return ret; } static int lgdt3306a_get_frontend(struct dvb_frontend *fe, struct dtv_frontend_properties *p) { struct lgdt3306a_state *state = fe->demodulator_priv; dbg_info("(%u, %d)\n", state->current_frequency, state->current_modulation); p->modulation = state->current_modulation; p->frequency = state->current_frequency; return 0; } static enum dvbfe_algo lgdt3306a_get_frontend_algo(struct dvb_frontend *fe) { #if 1 return DVBFE_ALGO_CUSTOM; #else return DVBFE_ALGO_HW; #endif } /* ------------------------------------------------------------------------ */ static int lgdt3306a_monitor_vsb(struct lgdt3306a_state *state) { u8 val; int ret; u8 snrRef, maxPowerMan, nCombDet; u16 fbDlyCir; ret = lgdt3306a_read_reg(state, 0x21a1, &val); if (ret) return ret; snrRef = val & 0x3f; ret = lgdt3306a_read_reg(state, 0x2185, &maxPowerMan); if (ret) return ret; ret = lgdt3306a_read_reg(state, 0x2191, &val); if (ret) return ret; nCombDet = (val & 0x80) >> 7; ret = lgdt3306a_read_reg(state, 0x2180, &val); if (ret) return ret; fbDlyCir = (val & 0x03) << 8; ret = lgdt3306a_read_reg(state, 0x2181, &val); if (ret) return ret; fbDlyCir |= val; dbg_info("snrRef=%d maxPowerMan=0x%x nCombDet=%d fbDlyCir=0x%x\n", snrRef, maxPowerMan, nCombDet, fbDlyCir); /* Carrier offset sub loop bandwidth */ ret = lgdt3306a_read_reg(state, 0x1061, &val); if (ret) return ret; val &= 0xf8; if ((snrRef > 18) && (maxPowerMan > 0x68) && (nCombDet == 0x01) && ((fbDlyCir == 0x03FF) || (fbDlyCir < 0x6C))) { /* SNR is over 18dB and no ghosting */ val |= 0x00; /* final bandwidth = 0 */ } else { val |= 0x04; /* final bandwidth = 4 */ } ret = lgdt3306a_write_reg(state, 0x1061, val); if (ret) return ret; /* Adjust Notch Filter */ ret = lgdt3306a_read_reg(state, 0x0024, &val); if (ret) return ret; val &= 0x0f; if (nCombDet == 0) { /* Turn on the Notch Filter */ val |= 0x50; } ret = lgdt3306a_write_reg(state, 0x0024, val); if (ret) return ret; /* VSB Timing Recovery output normalization */ ret = lgdt3306a_read_reg(state, 0x103d, &val); if (ret) return ret; val &= 0xcf; val |= 0x20; ret = lgdt3306a_write_reg(state, 0x103d, val); return ret; } static enum lgdt3306a_modulation lgdt3306a_check_oper_mode(struct lgdt3306a_state *state) { u8 val = 0; int ret; ret = lgdt3306a_read_reg(state, 0x0081, &val); if (ret) goto err; if (val & 0x80) { dbg_info("VSB\n"); return LG3306_VSB; } if (val & 0x08) { ret = lgdt3306a_read_reg(state, 0x00a6, &val); if (ret) goto err; val = val >> 2; if (val & 0x01) { dbg_info("QAM256\n"); return LG3306_QAM256; } dbg_info("QAM64\n"); return LG3306_QAM64; } err: pr_warn("UNKNOWN\n"); return LG3306_UNKNOWN_MODE; } static enum lgdt3306a_lock_status lgdt3306a_check_lock_status(struct lgdt3306a_state *state, enum lgdt3306a_lock_check whatLock) { u8 val = 0; int ret; enum lgdt3306a_modulation modeOper; enum lgdt3306a_lock_status lockStatus; modeOper = LG3306_UNKNOWN_MODE; switch (whatLock) { case LG3306_SYNC_LOCK: { ret = lgdt3306a_read_reg(state, 0x00a6, &val); if (ret) return ret; if ((val & 0x80) == 0x80) lockStatus = LG3306_LOCK; else lockStatus = LG3306_UNLOCK; dbg_info("SYNC_LOCK=%x\n", lockStatus); break; } case LG3306_AGC_LOCK: { ret = lgdt3306a_read_reg(state, 0x0080, &val); if (ret) return ret; if ((val & 0x40) == 0x40) lockStatus = LG3306_LOCK; else lockStatus = LG3306_UNLOCK; dbg_info("AGC_LOCK=%x\n", lockStatus); break; } case LG3306_TR_LOCK: { modeOper = lgdt3306a_check_oper_mode(state); if ((modeOper == LG3306_QAM64) || (modeOper == LG3306_QAM256)) { ret = lgdt3306a_read_reg(state, 0x1094, &val); if (ret) return ret; if ((val & 0x80) == 0x80) lockStatus = LG3306_LOCK; else lockStatus = LG3306_UNLOCK; } else lockStatus = LG3306_UNKNOWN_LOCK; dbg_info("TR_LOCK=%x\n", lockStatus); break; } case LG3306_FEC_LOCK: { modeOper = lgdt3306a_check_oper_mode(state); if ((modeOper == LG3306_QAM64) || (modeOper == LG3306_QAM256)) { ret = lgdt3306a_read_reg(state, 0x0080, &val); if (ret) return ret; if ((val & 0x10) == 0x10) lockStatus = LG3306_LOCK; else lockStatus = LG3306_UNLOCK; } else lockStatus = LG3306_UNKNOWN_LOCK; dbg_info("FEC_LOCK=%x\n", lockStatus); break; } default: lockStatus = LG3306_UNKNOWN_LOCK; pr_warn("UNKNOWN whatLock=%d\n", whatLock); break; } return lockStatus; } static enum lgdt3306a_neverlock_status lgdt3306a_check_neverlock_status(struct lgdt3306a_state *state) { u8 val = 0; int ret; enum lgdt3306a_neverlock_status lockStatus; ret = lgdt3306a_read_reg(state, 0x0080, &val); if (ret) return ret; lockStatus = (enum lgdt3306a_neverlock_status)(val & 0x03); dbg_info("NeverLock=%d", lockStatus); return lockStatus; } static int lgdt3306a_pre_monitoring(struct lgdt3306a_state *state) { u8 val = 0; int ret; u8 currChDiffACQ, snrRef, mainStrong, aiccrejStatus; /* Channel variation */ ret = lgdt3306a_read_reg(state, 0x21bc, &currChDiffACQ); if (ret) return ret; /* SNR of Frame sync */ ret = lgdt3306a_read_reg(state, 0x21a1, &val); if (ret) return ret; snrRef = val & 0x3f; /* Strong Main CIR */ ret = lgdt3306a_read_reg(state, 0x2199, &val); if (ret) return ret; mainStrong = (val & 0x40) >> 6; ret = lgdt3306a_read_reg(state, 0x0090, &val); if (ret) return ret; aiccrejStatus = (val & 0xf0) >> 4; dbg_info("snrRef=%d mainStrong=%d aiccrejStatus=%d currChDiffACQ=0x%x\n", snrRef, mainStrong, aiccrejStatus, currChDiffACQ); #if 0 /* Dynamic ghost exists */ if ((mainStrong == 0) && (currChDiffACQ > 0x70)) #endif if (mainStrong == 0) { ret = lgdt3306a_read_reg(state, 0x2135, &val); if (ret) return ret; val &= 0x0f; val |= 0xa0; ret = lgdt3306a_write_reg(state, 0x2135, val); if (ret) return ret; ret = lgdt3306a_read_reg(state, 0x2141, &val); if (ret) return ret; val &= 0x3f; val |= 0x80; ret = lgdt3306a_write_reg(state, 0x2141, val); if (ret) return ret; ret = lgdt3306a_write_reg(state, 0x2122, 0x70); if (ret) return ret; } else { /* Weak ghost or static channel */ ret = lgdt3306a_read_reg(state, 0x2135, &val); if (ret) return ret; val &= 0x0f; val |= 0x70; ret = lgdt3306a_write_reg(state, 0x2135, val); if (ret) return ret; ret = lgdt3306a_read_reg(state, 0x2141, &val); if (ret) return ret; val &= 0x3f; val |= 0x40; ret = lgdt3306a_write_reg(state, 0x2141, val); if (ret) return ret; ret = lgdt3306a_write_reg(state, 0x2122, 0x40); if (ret) return ret; } return 0; } static enum lgdt3306a_lock_status lgdt3306a_sync_lock_poll(struct lgdt3306a_state *state) { enum lgdt3306a_lock_status syncLockStatus = LG3306_UNLOCK; int i; for (i = 0; i < 2; i++) { msleep(30); syncLockStatus = lgdt3306a_check_lock_status(state, LG3306_SYNC_LOCK); if (syncLockStatus == LG3306_LOCK) { dbg_info("locked(%d)\n", i); return LG3306_LOCK; } } dbg_info("not locked\n"); return LG3306_UNLOCK; } static enum lgdt3306a_lock_status lgdt3306a_fec_lock_poll(struct lgdt3306a_state *state) { enum lgdt3306a_lock_status FECLockStatus = LG3306_UNLOCK; int i; for (i = 0; i < 2; i++) { msleep(30); FECLockStatus = lgdt3306a_check_lock_status(state, LG3306_FEC_LOCK); if (FECLockStatus == LG3306_LOCK) { dbg_info("locked(%d)\n", i); return FECLockStatus; } } dbg_info("not locked\n"); return FECLockStatus; } static enum lgdt3306a_neverlock_status lgdt3306a_neverlock_poll(struct lgdt3306a_state *state) { enum lgdt3306a_neverlock_status NLLockStatus = LG3306_NL_FAIL; int i; for (i = 0; i < 5; i++) { msleep(30); NLLockStatus = lgdt3306a_check_neverlock_status(state); if (NLLockStatus == LG3306_NL_LOCK) { dbg_info("NL_LOCK(%d)\n", i); return NLLockStatus; } } dbg_info("NLLockStatus=%d\n", NLLockStatus); return NLLockStatus; } static u8 lgdt3306a_get_packet_error(struct lgdt3306a_state *state) { u8 val; int ret; ret = lgdt3306a_read_reg(state, 0x00fa, &val); if (ret) return ret; return val; } static const u32 valx_x10[] = { 10, 11, 13, 15, 17, 20, 25, 33, 41, 50, 59, 73, 87, 100 }; static const u32 log10x_x1000[] = { 0, 41, 114, 176, 230, 301, 398, 518, 613, 699, 771, 863, 939, 1000 }; static u32 log10_x1000(u32 x) { u32 diff_val, step_val, step_log10; u32 log_val = 0; u32 i; if (x <= 0) return -1000000; /* signal error */ if (x == 10) return 0; /* log(1)=0 */ if (x < 10) { while (x < 10) { x = x * 10; log_val--; } } else { /* x > 10 */ while (x >= 100) { x = x / 10; log_val++; } } log_val *= 1000; if (x == 10) /* was our input an exact multiple of 10 */ return log_val; /* don't need to interpolate */ /* find our place on the log curve */ for (i = 1; i < ARRAY_SIZE(valx_x10); i++) { if (valx_x10[i] >= x) break; } if (i == ARRAY_SIZE(valx_x10)) return log_val + log10x_x1000[i - 1]; diff_val = x - valx_x10[i-1]; step_val = valx_x10[i] - valx_x10[i - 1]; step_log10 = log10x_x1000[i] - log10x_x1000[i - 1]; /* do a linear interpolation to get in-between values */ return log_val + log10x_x1000[i - 1] + ((diff_val*step_log10) / step_val); } static u32 lgdt3306a_calculate_snr_x100(struct lgdt3306a_state *state) { u32 mse; /* Mean-Square Error */ u32 pwr; /* Constelation power */ u32 snr_x100; mse = (read_reg(state, 0x00ec) << 8) | (read_reg(state, 0x00ed)); pwr = (read_reg(state, 0x00e8) << 8) | (read_reg(state, 0x00e9)); if (mse == 0) /* no signal */ return 0; snr_x100 = log10_x1000((pwr * 10000) / mse) - 3000; dbg_info("mse=%u, pwr=%u, snr_x100=%d\n", mse, pwr, snr_x100); return snr_x100; } static enum lgdt3306a_lock_status lgdt3306a_vsb_lock_poll(struct lgdt3306a_state *state) { int ret; u8 cnt = 0; u8 packet_error; u32 snr; for (cnt = 0; cnt < 10; cnt++) { if (lgdt3306a_sync_lock_poll(state) == LG3306_UNLOCK) { dbg_info("no sync lock!\n"); return LG3306_UNLOCK; } msleep(20); ret = lgdt3306a_pre_monitoring(state); if (ret) break; packet_error = lgdt3306a_get_packet_error(state); snr = lgdt3306a_calculate_snr_x100(state); dbg_info("cnt=%d errors=%d snr=%d\n", cnt, packet_error, snr); if ((snr >= 1500) && (packet_error < 0xff)) return LG3306_LOCK; } dbg_info("not locked!\n"); return LG3306_UNLOCK; } static enum lgdt3306a_lock_status lgdt3306a_qam_lock_poll(struct lgdt3306a_state *state) { u8 cnt; u8 packet_error; u32 snr; for (cnt = 0; cnt < 10; cnt++) { if (lgdt3306a_fec_lock_poll(state) == LG3306_UNLOCK) { dbg_info("no fec lock!\n"); return LG3306_UNLOCK; } msleep(20); packet_error = lgdt3306a_get_packet_error(state); snr = lgdt3306a_calculate_snr_x100(state); dbg_info("cnt=%d errors=%d snr=%d\n", cnt, packet_error, snr); if ((snr >= 1500) && (packet_error < 0xff)) return LG3306_LOCK; } dbg_info("not locked!\n"); return LG3306_UNLOCK; } static int lgdt3306a_read_status(struct dvb_frontend *fe, enum fe_status *status) { struct lgdt3306a_state *state = fe->demodulator_priv; struct dtv_frontend_properties *c = &fe->dtv_property_cache; u16 strength = 0; int ret = 0; if (fe->ops.tuner_ops.get_rf_strength) { ret = fe->ops.tuner_ops.get_rf_strength(fe, &strength); if (ret == 0) dbg_info("strength=%d\n", strength); else dbg_info("fe->ops.tuner_ops.get_rf_strength() failed\n"); } *status = 0; if (lgdt3306a_neverlock_poll(state) == LG3306_NL_LOCK) { *status |= FE_HAS_SIGNAL; *status |= FE_HAS_CARRIER; switch (state->current_modulation) { case QAM_256: case QAM_64: case QAM_AUTO: if (lgdt3306a_qam_lock_poll(state) == LG3306_LOCK) { *status |= FE_HAS_VITERBI; *status |= FE_HAS_SYNC; *status |= FE_HAS_LOCK; } break; case VSB_8: if (lgdt3306a_vsb_lock_poll(state) == LG3306_LOCK) { *status |= FE_HAS_VITERBI; *status |= FE_HAS_SYNC; *status |= FE_HAS_LOCK; ret = lgdt3306a_monitor_vsb(state); } break; default: ret = -EINVAL; } if (*status & FE_HAS_SYNC) { c->cnr.len = 1; c->cnr.stat[0].scale = FE_SCALE_DECIBEL; c->cnr.stat[0].svalue = lgdt3306a_calculate_snr_x100(state) * 10; } else { c->cnr.len = 1; c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; } } return ret; } static int lgdt3306a_read_snr(struct dvb_frontend *fe, u16 *snr) { struct lgdt3306a_state *state = fe->demodulator_priv; state->snr = lgdt3306a_calculate_snr_x100(state); /* report SNR in dB * 10 */ *snr = state->snr/10; return 0; } static int lgdt3306a_read_signal_strength(struct dvb_frontend *fe, u16 *strength) { /* * Calculate some sort of "strength" from SNR */ struct lgdt3306a_state *state = fe->demodulator_priv; u8 val; u16 snr; /* snr_x10 */ int ret; u32 ref_snr; /* snr*100 */ u32 str; *strength = 0; switch (state->current_modulation) { case VSB_8: ref_snr = 1600; /* 16dB */ break; case QAM_64: case QAM_256: case QAM_AUTO: /* need to know actual modulation to set proper SNR baseline */ ret = lgdt3306a_read_reg(state, 0x00a6, &val); if (lg_chkerr(ret)) goto fail; if(val & 0x04) ref_snr = 2800; /* QAM-256 28dB */ else ref_snr = 2200; /* QAM-64 22dB */ break; default: return -EINVAL; } ret = fe->ops.read_snr(fe, &snr); if (lg_chkerr(ret)) goto fail; if (state->snr <= (ref_snr - 100)) str = 0; else if (state->snr <= ref_snr) str = (0xffff * 65) / 100; /* 65% */ else { str = state->snr - ref_snr; str /= 50; str += 78; /* 78%-100% */ if (str > 100) str = 100; str = (0xffff * str) / 100; } *strength = (u16)str; dbg_info("strength=%u\n", *strength); fail: return ret; } /* ------------------------------------------------------------------------ */ static int lgdt3306a_read_ber(struct dvb_frontend *fe, u32 *ber) { struct lgdt3306a_state *state = fe->demodulator_priv; u32 tmp; *ber = 0; #if 1 /* FGR - FIXME - I don't know what value is expected by dvb_core * what is the scale of the value?? */ tmp = read_reg(state, 0x00fc); /* NBERVALUE[24-31] */ tmp = (tmp << 8) | read_reg(state, 0x00fd); /* NBERVALUE[16-23] */ tmp = (tmp << 8) | read_reg(state, 0x00fe); /* NBERVALUE[8-15] */ tmp = (tmp << 8) | read_reg(state, 0x00ff); /* NBERVALUE[0-7] */ *ber = tmp; dbg_info("ber=%u\n", tmp); #endif return 0; } static int lgdt3306a_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) { struct lgdt3306a_state *state = fe->demodulator_priv; *ucblocks = 0; #if 1 /* FGR - FIXME - I don't know what value is expected by dvb_core * what happens when value wraps? */ *ucblocks = read_reg(state, 0x00f4); /* TPIFTPERRCNT[0-7] */ dbg_info("ucblocks=%u\n", *ucblocks); #endif return 0; } static int lgdt3306a_tune(struct dvb_frontend *fe, bool re_tune, unsigned int mode_flags, unsigned int *delay, enum fe_status *status) { int ret = 0; struct lgdt3306a_state *state = fe->demodulator_priv; dbg_info("re_tune=%u\n", re_tune); if (re_tune) { state->current_frequency = -1; /* force re-tune */ ret = lgdt3306a_set_parameters(fe); if (ret != 0) return ret; } *delay = 125; ret = lgdt3306a_read_status(fe, status); return ret; } static int lgdt3306a_get_tune_settings(struct dvb_frontend *fe, struct dvb_frontend_tune_settings *fe_tune_settings) { fe_tune_settings->min_delay_ms = 100; dbg_info("\n"); return 0; } static enum dvbfe_search lgdt3306a_search(struct dvb_frontend *fe) { enum fe_status status = 0; int ret; /* set frontend */ ret = lgdt3306a_set_parameters(fe); if (ret) goto error; ret = lgdt3306a_read_status(fe, &status); if (ret) goto error; /* check if we have a valid signal */ if (status & FE_HAS_LOCK) return DVBFE_ALGO_SEARCH_SUCCESS; else return DVBFE_ALGO_SEARCH_AGAIN; error: dbg_info("failed (%d)\n", ret); return DVBFE_ALGO_SEARCH_ERROR; } static void lgdt3306a_release(struct dvb_frontend *fe) { struct lgdt3306a_state *state = fe->demodulator_priv; dbg_info("\n"); kfree(state); } static const struct dvb_frontend_ops lgdt3306a_ops; struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config, struct i2c_adapter *i2c_adap) { struct lgdt3306a_state *state = NULL; int ret; u8 val; dbg_info("(%d-%04x)\n", i2c_adap ? i2c_adapter_id(i2c_adap) : 0, config ? config->i2c_addr : 0); state = kzalloc(sizeof(struct lgdt3306a_state), GFP_KERNEL); if (state == NULL) goto fail; state->cfg = config; state->i2c_adap = i2c_adap; memcpy(&state->frontend.ops, &lgdt3306a_ops, sizeof(struct dvb_frontend_ops)); state->frontend.demodulator_priv = state; /* verify that we're talking to a lg3306a */ /* FGR - NOTE - there is no obvious ChipId to check; we check * some "known" bits after reset, but it's still just a guess */ ret = lgdt3306a_read_reg(state, 0x0000, &val); if (lg_chkerr(ret)) goto fail; if ((val & 0x74) != 0x74) { pr_warn("expected 0x74, got 0x%x\n", (val & 0x74)); #if 0 /* FIXME - re-enable when we know this is right */ goto fail; #endif } ret = lgdt3306a_read_reg(state, 0x0001, &val); if (lg_chkerr(ret)) goto fail; if ((val & 0xf6) != 0xc6) { pr_warn("expected 0xc6, got 0x%x\n", (val & 0xf6)); #if 0 /* FIXME - re-enable when we know this is right */ goto fail; #endif } ret = lgdt3306a_read_reg(state, 0x0002, &val); if (lg_chkerr(ret)) goto fail; if ((val & 0x73) != 0x03) { pr_warn("expected 0x03, got 0x%x\n", (val & 0x73)); #if 0 /* FIXME - re-enable when we know this is right */ goto fail; #endif } state->current_frequency = -1; state->current_modulation = -1; lgdt3306a_sleep(state); return &state->frontend; fail: pr_warn("unable to detect LGDT3306A hardware\n"); kfree(state); return NULL; } EXPORT_SYMBOL_GPL(lgdt3306a_attach); #ifdef DBG_DUMP static const short regtab[] = { 0x0000, /* SOFTRSTB 1'b1 1'b1 1'b1 ADCPDB 1'b1 PLLPDB GBBPDB 11111111 */ 0x0001, /* 1'b1 1'b1 1'b0 1'b0 AUTORPTRS */ 0x0002, /* NI2CRPTEN 1'b0 1'b0 1'b0 SPECINVAUT */ 0x0003, /* AGCRFOUT */ 0x0004, /* ADCSEL1V ADCCNT ADCCNF ADCCNS ADCCLKPLL */ 0x0005, /* PLLINDIVSE */ 0x0006, /* PLLCTRL[7:0] 11100001 */ 0x0007, /* SYSINITWAITTIME[7:0] (msec) 00001000 */ 0x0008, /* STDOPMODE[7:0] 10000000 */ 0x0009, /* 1'b0 1'b0 1'b0 STDOPDETTMODE[2:0] STDOPDETCMODE[1:0] 00011110 */ 0x000a, /* DAFTEN 1'b1 x x SCSYSLOCK */ 0x000b, /* SCSYSLOCKCHKTIME[7:0] (10msec) 01100100 */ 0x000d, /* x SAMPLING4 */ 0x000e, /* SAMFREQ[15:8] 00000000 */ 0x000f, /* SAMFREQ[7:0] 00000000 */ 0x0010, /* IFFREQ[15:8] 01100000 */ 0x0011, /* IFFREQ[7:0] 00000000 */ 0x0012, /* AGCEN AGCREFMO */ 0x0013, /* AGCRFFIXB AGCIFFIXB AGCLOCKDETRNGSEL[1:0] 1'b1 1'b0 1'b0 1'b0 11101000 */ 0x0014, /* AGCFIXVALUE[7:0] 01111111 */ 0x0015, /* AGCREF[15:8] 00001010 */ 0x0016, /* AGCREF[7:0] 11100100 */ 0x0017, /* AGCDELAY[7:0] 00100000 */ 0x0018, /* AGCRFBW[3:0] AGCIFBW[3:0] 10001000 */ 0x0019, /* AGCUDOUTMODE[1:0] AGCUDCTRLLEN[1:0] AGCUDCTRL */ 0x001c, /* 1'b1 PFEN MFEN AICCVSYNC */ 0x001d, /* 1'b0 1'b1 1'b0 1'b1 AICCVSYNC */ 0x001e, /* AICCALPHA[3:0] 1'b1 1'b0 1'b1 1'b0 01111010 */ 0x001f, /* AICCDETTH[19:16] AICCOFFTH[19:16] 00000000 */ 0x0020, /* AICCDETTH[15:8] 01111100 */ 0x0021, /* AICCDETTH[7:0] 00000000 */ 0x0022, /* AICCOFFTH[15:8] 00000101 */ 0x0023, /* AICCOFFTH[7:0] 11100000 */ 0x0024, /* AICCOPMODE3[1:0] AICCOPMODE2[1:0] AICCOPMODE1[1:0] AICCOPMODE0[1:0] 00000000 */ 0x0025, /* AICCFIXFREQ3[23:16] 00000000 */ 0x0026, /* AICCFIXFREQ3[15:8] 00000000 */ 0x0027, /* AICCFIXFREQ3[7:0] 00000000 */ 0x0028, /* AICCFIXFREQ2[23:16] 00000000 */ 0x0029, /* AICCFIXFREQ2[15:8] 00000000 */ 0x002a, /* AICCFIXFREQ2[7:0] 00000000 */ 0x002b, /* AICCFIXFREQ1[23:16] 00000000 */ 0x002c, /* AICCFIXFREQ1[15:8] 00000000 */ 0x002d, /* AICCFIXFREQ1[7:0] 00000000 */ 0x002e, /* AICCFIXFREQ0[23:16] 00000000 */ 0x002f, /* AICCFIXFREQ0[15:8] 00000000 */ 0x0030, /* AICCFIXFREQ0[7:0] 00000000 */ 0x0031, /* 1'b0 1'b1 1'b0 1'b0 x DAGC1STER */ 0x0032, /* DAGC1STEN DAGC1STER */ 0x0033, /* DAGC1STREF[15:8] 00001010 */ 0x0034, /* DAGC1STREF[7:0] 11100100 */ 0x0035, /* DAGC2NDE */ 0x0036, /* DAGC2NDREF[15:8] 00001010 */ 0x0037, /* DAGC2NDREF[7:0] 10000000 */ 0x0038, /* DAGC2NDLOCKDETRNGSEL[1:0] */ 0x003d, /* 1'b1 SAMGEARS */ 0x0040, /* SAMLFGMA */ 0x0041, /* SAMLFBWM */ 0x0044, /* 1'b1 CRGEARSHE */ 0x0045, /* CRLFGMAN */ 0x0046, /* CFLFBWMA */ 0x0047, /* CRLFGMAN */ 0x0048, /* x x x x CRLFGSTEP_VS[3:0] xxxx1001 */ 0x0049, /* CRLFBWMA */ 0x004a, /* CRLFBWMA */ 0x0050, /* 1'b0 1'b1 1'b1 1'b0 MSECALCDA */ 0x0070, /* TPOUTEN TPIFEN TPCLKOUTE */ 0x0071, /* TPSENB TPSSOPBITE */ 0x0073, /* TP47HINS x x CHBERINT PERMODE[1:0] PERINT[1:0] 1xx11100 */ 0x0075, /* x x x x x IQSWAPCTRL[2:0] xxxxx000 */ 0x0076, /* NBERCON NBERST NBERPOL NBERWSYN */ 0x0077, /* x NBERLOSTTH[2:0] NBERACQTH[3:0] x0000000 */ 0x0078, /* NBERPOLY[31:24] 00000000 */ 0x0079, /* NBERPOLY[23:16] 00000000 */ 0x007a, /* NBERPOLY[15:8] 00000000 */ 0x007b, /* NBERPOLY[7:0] 00000000 */ 0x007c, /* NBERPED[31:24] 00000000 */ 0x007d, /* NBERPED[23:16] 00000000 */ 0x007e, /* NBERPED[15:8] 00000000 */ 0x007f, /* NBERPED[7:0] 00000000 */ 0x0080, /* x AGCLOCK DAGCLOCK SYSLOCK x x NEVERLOCK[1:0] */ 0x0085, /* SPECINVST */ 0x0088, /* SYSLOCKTIME[15:8] */ 0x0089, /* SYSLOCKTIME[7:0] */ 0x008c, /* FECLOCKTIME[15:8] */ 0x008d, /* FECLOCKTIME[7:0] */ 0x008e, /* AGCACCOUT[15:8] */ 0x008f, /* AGCACCOUT[7:0] */ 0x0090, /* AICCREJSTATUS[3:0] AICCREJBUSY[3:0] */ 0x0091, /* AICCVSYNC */ 0x009c, /* CARRFREQOFFSET[15:8] */ 0x009d, /* CARRFREQOFFSET[7:0] */ 0x00a1, /* SAMFREQOFFSET[23:16] */ 0x00a2, /* SAMFREQOFFSET[15:8] */ 0x00a3, /* SAMFREQOFFSET[7:0] */ 0x00a6, /* SYNCLOCK SYNCLOCKH */ #if 0 /* covered elsewhere */ 0x00e8, /* CONSTPWR[15:8] */ 0x00e9, /* CONSTPWR[7:0] */ 0x00ea, /* BMSE[15:8] */ 0x00eb, /* BMSE[7:0] */ 0x00ec, /* MSE[15:8] */ 0x00ed, /* MSE[7:0] */ 0x00ee, /* CONSTI[7:0] */ 0x00ef, /* CONSTQ[7:0] */ #endif 0x00f4, /* TPIFTPERRCNT[7:0] */ 0x00f5, /* TPCORREC */ 0x00f6, /* VBBER[15:8] */ 0x00f7, /* VBBER[7:0] */ 0x00f8, /* VABER[15:8] */ 0x00f9, /* VABER[7:0] */ 0x00fa, /* TPERRCNT[7:0] */ 0x00fb, /* NBERLOCK x x x x x x x */ 0x00fc, /* NBERVALUE[31:24] */ 0x00fd, /* NBERVALUE[23:16] */ 0x00fe, /* NBERVALUE[15:8] */ 0x00ff, /* NBERVALUE[7:0] */ 0x1000, /* 1'b0 WODAGCOU */ 0x1005, /* x x 1'b1 1'b1 x SRD_Q_QM */ 0x1009, /* SRDWAITTIME[7:0] (10msec) 00100011 */ 0x100a, /* SRDWAITTIME_CQS[7:0] (msec) 01100100 */ 0x101a, /* x 1'b1 1'b0 1'b0 x QMDQAMMODE[2:0] x100x010 */ 0x1036, /* 1'b0 1'b1 1'b0 1'b0 SAMGSEND_CQS[3:0] 01001110 */ 0x103c, /* SAMGSAUTOSTL_V[3:0] SAMGSAUTOEDL_V[3:0] 01000110 */ 0x103d, /* 1'b1 1'b1 SAMCNORMBP_V[1:0] 1'b0 1'b0 SAMMODESEL_V[1:0] 11100001 */ 0x103f, /* SAMZTEDSE */ 0x105d, /* EQSTATUSE */ 0x105f, /* x PMAPG2_V[2:0] x DMAPG2_V[2:0] x001x011 */ 0x1060, /* 1'b1 EQSTATUSE */ 0x1061, /* CRMAPBWSTL_V[3:0] CRMAPBWEDL_V[3:0] 00000100 */ 0x1065, /* 1'b0 x CRMODE_V[1:0] 1'b1 x 1'b1 x 0x111x1x */ 0x1066, /* 1'b0 1'b0 1'b1 1'b0 1'b1 PNBOOSTSE */ 0x1068, /* CREPHNGAIN2_V[3:0] CREPHNPBW_V[3:0] 10010001 */ 0x106e, /* x x x x x CREPHNEN_ */ 0x106f, /* CREPHNTH_V[7:0] 00010101 */ 0x1072, /* CRSWEEPN */ 0x1073, /* CRPGAIN_V[3:0] x x 1'b1 1'b1 1001xx11 */ 0x1074, /* CRPBW_V[3:0] x x 1'b1 1'b1 0001xx11 */ 0x1080, /* DAFTSTATUS[1:0] x x x x x x */ 0x1081, /* SRDSTATUS[1:0] x x x x x SRDLOCK */ 0x10a9, /* EQSTATUS_CQS[1:0] x x x x x x */ 0x10b7, /* EQSTATUS_V[1:0] x x x x x x */ #if 0 /* SMART_ANT */ 0x1f00, /* MODEDETE */ 0x1f01, /* x x x x x x x SFNRST xxxxxxx0 */ 0x1f03, /* NUMOFANT[7:0] 10000000 */ 0x1f04, /* x SELMASK[6:0] x0000000 */ 0x1f05, /* x SETMASK[6:0] x0000000 */ 0x1f06, /* x TXDATA[6:0] x0000000 */ 0x1f07, /* x CHNUMBER[6:0] x0000000 */ 0x1f09, /* AGCTIME[23:16] 10011000 */ 0x1f0a, /* AGCTIME[15:8] 10010110 */ 0x1f0b, /* AGCTIME[7:0] 10000000 */ 0x1f0c, /* ANTTIME[31:24] 00000000 */ 0x1f0d, /* ANTTIME[23:16] 00000011 */ 0x1f0e, /* ANTTIME[15:8] 10010000 */ 0x1f0f, /* ANTTIME[7:0] 10010000 */ 0x1f11, /* SYNCTIME[23:16] 10011000 */ 0x1f12, /* SYNCTIME[15:8] 10010110 */ 0x1f13, /* SYNCTIME[7:0] 10000000 */ 0x1f14, /* SNRTIME[31:24] 00000001 */ 0x1f15, /* SNRTIME[23:16] 01111101 */ 0x1f16, /* SNRTIME[15:8] 01111000 */ 0x1f17, /* SNRTIME[7:0] 01000000 */ 0x1f19, /* FECTIME[23:16] 00000000 */ 0x1f1a, /* FECTIME[15:8] 01110010 */ 0x1f1b, /* FECTIME[7:0] 01110000 */ 0x1f1d, /* FECTHD[7:0] 00000011 */ 0x1f1f, /* SNRTHD[23:16] 00001000 */ 0x1f20, /* SNRTHD[15:8] 01111111 */ 0x1f21, /* SNRTHD[7:0] 10000101 */ 0x1f80, /* IRQFLG x x SFSDRFLG MODEBFLG SAVEFLG SCANFLG TRACKFLG */ 0x1f81, /* x SYNCCON SNRCON FECCON x STDBUSY SYNCRST AGCFZCO */ 0x1f82, /* x x x SCANOPCD[4:0] */ 0x1f83, /* x x x x MAINOPCD[3:0] */ 0x1f84, /* x x RXDATA[13:8] */ 0x1f85, /* RXDATA[7:0] */ 0x1f86, /* x x SDTDATA[13:8] */ 0x1f87, /* SDTDATA[7:0] */ 0x1f89, /* ANTSNR[23:16] */ 0x1f8a, /* ANTSNR[15:8] */ 0x1f8b, /* ANTSNR[7:0] */ 0x1f8c, /* x x x x ANTFEC[13:8] */ 0x1f8d, /* ANTFEC[7:0] */ 0x1f8e, /* MAXCNT[7:0] */ 0x1f8f, /* SCANCNT[7:0] */ 0x1f91, /* MAXPW[23:16] */ 0x1f92, /* MAXPW[15:8] */ 0x1f93, /* MAXPW[7:0] */ 0x1f95, /* CURPWMSE[23:16] */ 0x1f96, /* CURPWMSE[15:8] */ 0x1f97, /* CURPWMSE[7:0] */ #endif /* SMART_ANT */ 0x211f, /* 1'b1 1'b1 1'b1 CIRQEN x x 1'b0 1'b0 1111xx00 */ 0x212a, /* EQAUTOST */ 0x2122, /* CHFAST[7:0] 01100000 */ 0x212b, /* FFFSTEP_V[3:0] x FBFSTEP_V[2:0] 0001x001 */ 0x212c, /* PHDEROTBWSEL[3:0] 1'b1 1'b1 1'b1 1'b0 10001110 */ 0x212d, /* 1'b1 1'b1 1'b1 1'b1 x x TPIFLOCKS */ 0x2135, /* DYNTRACKFDEQ[3:0] x 1'b0 1'b0 1'b0 1010x000 */ 0x2141, /* TRMODE[1:0] 1'b1 1'b1 1'b0 1'b1 1'b1 1'b1 01110111 */ 0x2162, /* AICCCTRLE */ 0x2173, /* PHNCNFCNT[7:0] 00000100 */ 0x2179, /* 1'b0 1'b0 1'b0 1'b1 x BADSINGLEDYNTRACKFBF[2:0] 0001x001 */ 0x217a, /* 1'b0 1'b0 1'b0 1'b1 x BADSLOWSINGLEDYNTRACKFBF[2:0] 0001x001 */ 0x217e, /* CNFCNTTPIF[7:0] 00001000 */ 0x217f, /* TPERRCNTTPIF[7:0] 00000001 */ 0x2180, /* x x x x x x FBDLYCIR[9:8] */ 0x2181, /* FBDLYCIR[7:0] */ 0x2185, /* MAXPWRMAIN[7:0] */ 0x2191, /* NCOMBDET x x x x x x x */ 0x2199, /* x MAINSTRON */ 0x219a, /* FFFEQSTEPOUT_V[3:0] FBFSTEPOUT_V[2:0] */ 0x21a1, /* x x SNRREF[5:0] */ 0x2845, /* 1'b0 1'b1 x x FFFSTEP_CQS[1:0] FFFCENTERTAP[1:0] 01xx1110 */ 0x2846, /* 1'b0 x 1'b0 1'b1 FBFSTEP_CQS[1:0] 1'b1 1'b0 0x011110 */ 0x2847, /* ENNOSIGDE */ 0x2849, /* 1'b1 1'b1 NOUSENOSI */ 0x284a, /* EQINITWAITTIME[7:0] 01100100 */ 0x3000, /* 1'b1 1'b1 1'b1 x x x 1'b0 RPTRSTM */ 0x3001, /* RPTRSTWAITTIME[7:0] (100msec) 00110010 */ 0x3031, /* FRAMELOC */ 0x3032, /* 1'b1 1'b0 1'b0 1'b0 x x FRAMELOCKMODE_CQS[1:0] 1000xx11 */ 0x30a9, /* VDLOCK_Q FRAMELOCK */ 0x30aa, /* MPEGLOCK */ }; #define numDumpRegs (ARRAY_SIZE(regtab)) static u8 regval1[numDumpRegs] = {0, }; static u8 regval2[numDumpRegs] = {0, }; static void lgdt3306a_DumpAllRegs(struct lgdt3306a_state *state) { memset(regval2, 0xff, sizeof(regval2)); lgdt3306a_DumpRegs(state); } static void lgdt3306a_DumpRegs(struct lgdt3306a_state *state) { int i; int sav_debug = debug; if ((debug & DBG_DUMP) == 0) return; debug &= ~DBG_REG; /* suppress DBG_REG during reg dump */ lg_debug("\n"); for (i = 0; i < numDumpRegs; i++) { lgdt3306a_read_reg(state, regtab[i], ®val1[i]); if (regval1[i] != regval2[i]) { lg_debug(" %04X = %02X\n", regtab[i], regval1[i]); regval2[i] = regval1[i]; } } debug = sav_debug; } #endif /* DBG_DUMP */ static const struct dvb_frontend_ops lgdt3306a_ops = { .delsys = { SYS_ATSC, SYS_DVBC_ANNEX_B }, .info = { .name = "LG Electronics LGDT3306A VSB/QAM Frontend", .frequency_min_hz = 54 * MHz, .frequency_max_hz = 858 * MHz, .frequency_stepsize_hz = 62500, .caps = FE_CAN_QAM_AUTO | FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB }, .i2c_gate_ctrl = lgdt3306a_i2c_gate_ctrl, .init = lgdt3306a_init, .sleep = lgdt3306a_fe_sleep, /* if this is set, it overrides the default swzigzag */ .tune = lgdt3306a_tune, .set_frontend = lgdt3306a_set_parameters, .get_frontend = lgdt3306a_get_frontend, .get_frontend_algo = lgdt3306a_get_frontend_algo, .get_tune_settings = lgdt3306a_get_tune_settings, .read_status = lgdt3306a_read_status, .read_ber = lgdt3306a_read_ber, .read_signal_strength = lgdt3306a_read_signal_strength, .read_snr = lgdt3306a_read_snr, .read_ucblocks = lgdt3306a_read_ucblocks, .release = lgdt3306a_release, .ts_bus_ctrl = lgdt3306a_ts_bus_ctrl, .search = lgdt3306a_search, }; static int lgdt3306a_select(struct i2c_mux_core *muxc, u32 chan) { struct i2c_client *client = i2c_mux_priv(muxc); struct lgdt3306a_state *state = i2c_get_clientdata(client); return lgdt3306a_i2c_gate_ctrl(&state->frontend, 1); } static int lgdt3306a_deselect(struct i2c_mux_core *muxc, u32 chan) { struct i2c_client *client = i2c_mux_priv(muxc); struct lgdt3306a_state *state = i2c_get_clientdata(client); return lgdt3306a_i2c_gate_ctrl(&state->frontend, 0); } static int lgdt3306a_probe(struct i2c_client *client) { struct lgdt3306a_config *config; struct lgdt3306a_state *state; struct dvb_frontend *fe; int ret; if (!client->dev.platform_data) { dev_err(&client->dev, "platform data is mandatory\n"); return -EINVAL; } config = kmemdup(client->dev.platform_data, sizeof(struct lgdt3306a_config), GFP_KERNEL); if (config == NULL) { ret = -ENOMEM; goto fail; } config->i2c_addr = client->addr; fe = lgdt3306a_attach(config, client->adapter); if (fe == NULL) { ret = -ENODEV; goto err_fe; } i2c_set_clientdata(client, fe->demodulator_priv); state = fe->demodulator_priv; state->frontend.ops.release = NULL; /* create mux i2c adapter for tuner */ state->muxc = i2c_mux_alloc(client->adapter, &client->dev, 1, 0, I2C_MUX_LOCKED, lgdt3306a_select, lgdt3306a_deselect); if (!state->muxc) { ret = -ENOMEM; goto err_kfree; } state->muxc->priv = client; ret = i2c_mux_add_adapter(state->muxc, 0, 0); if (ret) goto err_kfree; /* create dvb_frontend */ fe->ops.i2c_gate_ctrl = NULL; *config->i2c_adapter = state->muxc->adapter[0]; *config->fe = fe; dev_info(&client->dev, "LG Electronics LGDT3306A successfully identified\n"); return 0; err_kfree: kfree(state); err_fe: kfree(config); fail: dev_warn(&client->dev, "probe failed = %d\n", ret); return ret; } static void lgdt3306a_remove(struct i2c_client *client) { struct lgdt3306a_state *state = i2c_get_clientdata(client); i2c_mux_del_adapters(state->muxc); state->frontend.ops.release = NULL; state->frontend.demodulator_priv = NULL; kfree(state->cfg); kfree(state); } static const struct i2c_device_id lgdt3306a_id_table[] = { {"lgdt3306a", 0}, {} }; MODULE_DEVICE_TABLE(i2c, lgdt3306a_id_table); static struct i2c_driver lgdt3306a_driver = { .driver = { .name = "lgdt3306a", .suppress_bind_attrs = true, }, .probe = lgdt3306a_probe, .remove = lgdt3306a_remove, .id_table = lgdt3306a_id_table, }; module_i2c_driver(lgdt3306a_driver); MODULE_DESCRIPTION("LG Electronics LGDT3306A ATSC/QAM-B Demodulator Driver"); MODULE_AUTHOR("Fred Richter <frichter@hauppauge.com>"); MODULE_LICENSE("GPL"); MODULE_VERSION("0.2");
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