/* * mxl5007t.c - driver for the MaxLinear MxL5007T silicon tuner * * Copyright (C) 2008, 2009 Michael Krufky <mkrufky@linuxtv.org> * * 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. */ #include <linux/i2c.h> #include <linux/types.h> #include <linux/videodev2.h> #include "tuner-i2c.h" #include "mxl5007t.h" static DEFINE_MUTEX(mxl5007t_list_mutex); static LIST_HEAD(hybrid_tuner_instance_list); static int mxl5007t_debug; module_param_named(debug, mxl5007t_debug, int, 0644); MODULE_PARM_DESC(debug, "set debug level"); /* ------------------------------------------------------------------------- */ #define mxl_printk(kern, fmt, arg...) \ printk(kern "%s: " fmt "\n", __func__, ##arg) #define mxl_err(fmt, arg...) \ mxl_printk(KERN_ERR, "%d: " fmt, __LINE__, ##arg) #define mxl_warn(fmt, arg...) \ mxl_printk(KERN_WARNING, fmt, ##arg) #define mxl_info(fmt, arg...) \ mxl_printk(KERN_INFO, fmt, ##arg) #define mxl_debug(fmt, arg...) \ ({ \ if (mxl5007t_debug) \ mxl_printk(KERN_DEBUG, fmt, ##arg); \ }) #define mxl_fail(ret) \ ({ \ int __ret; \ __ret = (ret < 0); \ if (__ret) \ mxl_printk(KERN_ERR, "error %d on line %d", \ ret, __LINE__); \ __ret; \ }) /* ------------------------------------------------------------------------- */ enum mxl5007t_mode { MxL_MODE_ISDBT = 0, MxL_MODE_DVBT = 1, MxL_MODE_ATSC = 2, MxL_MODE_CABLE = 0x10, }; enum mxl5007t_chip_version { MxL_UNKNOWN_ID = 0x00, MxL_5007_V1_F1 = 0x11, MxL_5007_V1_F2 = 0x12, MxL_5007_V4 = 0x14, MxL_5007_V2_100_F1 = 0x21, MxL_5007_V2_100_F2 = 0x22, MxL_5007_V2_200_F1 = 0x23, MxL_5007_V2_200_F2 = 0x24, }; struct reg_pair_t { u8 reg; u8 val; }; /* ------------------------------------------------------------------------- */ static struct reg_pair_t init_tab[] = { { 0x02, 0x06 }, { 0x03, 0x48 }, { 0x05, 0x04 }, { 0x06, 0x10 }, { 0x2e, 0x15 }, /* OVERRIDE */ { 0x30, 0x10 }, /* OVERRIDE */ { 0x45, 0x58 }, /* OVERRIDE */ { 0x48, 0x19 }, /* OVERRIDE */ { 0x52, 0x03 }, /* OVERRIDE */ { 0x53, 0x44 }, /* OVERRIDE */ { 0x6a, 0x4b }, /* OVERRIDE */ { 0x76, 0x00 }, /* OVERRIDE */ { 0x78, 0x18 }, /* OVERRIDE */ { 0x7a, 0x17 }, /* OVERRIDE */ { 0x85, 0x06 }, /* OVERRIDE */ { 0x01, 0x01 }, /* TOP_MASTER_ENABLE */ { 0, 0 } }; static struct reg_pair_t init_tab_cable[] = { { 0x02, 0x06 }, { 0x03, 0x48 }, { 0x05, 0x04 }, { 0x06, 0x10 }, { 0x09, 0x3f }, { 0x0a, 0x3f }, { 0x0b, 0x3f }, { 0x2e, 0x15 }, /* OVERRIDE */ { 0x30, 0x10 }, /* OVERRIDE */ { 0x45, 0x58 }, /* OVERRIDE */ { 0x48, 0x19 }, /* OVERRIDE */ { 0x52, 0x03 }, /* OVERRIDE */ { 0x53, 0x44 }, /* OVERRIDE */ { 0x6a, 0x4b }, /* OVERRIDE */ { 0x76, 0x00 }, /* OVERRIDE */ { 0x78, 0x18 }, /* OVERRIDE */ { 0x7a, 0x17 }, /* OVERRIDE */ { 0x85, 0x06 }, /* OVERRIDE */ { 0x01, 0x01 }, /* TOP_MASTER_ENABLE */ { 0, 0 } }; /* ------------------------------------------------------------------------- */ static struct reg_pair_t reg_pair_rftune[] = { { 0x0f, 0x00 }, /* abort tune */ { 0x0c, 0x15 }, { 0x0d, 0x40 }, { 0x0e, 0x0e }, { 0x1f, 0x87 }, /* OVERRIDE */ { 0x20, 0x1f }, /* OVERRIDE */ { 0x21, 0x87 }, /* OVERRIDE */ { 0x22, 0x1f }, /* OVERRIDE */ { 0x80, 0x01 }, /* freq dependent */ { 0x0f, 0x01 }, /* start tune */ { 0, 0 } }; /* ------------------------------------------------------------------------- */ struct mxl5007t_state { struct list_head hybrid_tuner_instance_list; struct tuner_i2c_props i2c_props; struct mutex lock; struct mxl5007t_config *config; enum mxl5007t_chip_version chip_id; struct reg_pair_t tab_init[ARRAY_SIZE(init_tab)]; struct reg_pair_t tab_init_cable[ARRAY_SIZE(init_tab_cable)]; struct reg_pair_t tab_rftune[ARRAY_SIZE(reg_pair_rftune)]; enum mxl5007t_if_freq if_freq; u32 frequency; u32 bandwidth; }; /* ------------------------------------------------------------------------- */ /* called by _init and _rftun to manipulate the register arrays */ static void set_reg_bits(struct reg_pair_t *reg_pair, u8 reg, u8 mask, u8 val) { unsigned int i = 0; while (reg_pair[i].reg || reg_pair[i].val) { if (reg_pair[i].reg == reg) { reg_pair[i].val &= ~mask; reg_pair[i].val |= val; } i++; } return; } static void copy_reg_bits(struct reg_pair_t *reg_pair1, struct reg_pair_t *reg_pair2) { unsigned int i, j; i = j = 0; while (reg_pair1[i].reg || reg_pair1[i].val) { while (reg_pair2[j].reg || reg_pair2[j].val) { if (reg_pair1[i].reg != reg_pair2[j].reg) { j++; continue; } reg_pair2[j].val = reg_pair1[i].val; break; } i++; } return; } /* ------------------------------------------------------------------------- */ static void mxl5007t_set_mode_bits(struct mxl5007t_state *state, enum mxl5007t_mode mode, s32 if_diff_out_level) { switch (mode) { case MxL_MODE_ATSC: set_reg_bits(state->tab_init, 0x06, 0x1f, 0x12); break; case MxL_MODE_DVBT: set_reg_bits(state->tab_init, 0x06, 0x1f, 0x11); break; case MxL_MODE_ISDBT: set_reg_bits(state->tab_init, 0x06, 0x1f, 0x10); break; case MxL_MODE_CABLE: set_reg_bits(state->tab_init_cable, 0x09, 0xff, 0xc1); set_reg_bits(state->tab_init_cable, 0x0a, 0xff, 8 - if_diff_out_level); set_reg_bits(state->tab_init_cable, 0x0b, 0xff, 0x17); break; default: mxl_fail(-EINVAL); } return; } static void mxl5007t_set_if_freq_bits(struct mxl5007t_state *state, enum mxl5007t_if_freq if_freq, int invert_if) { u8 val; switch (if_freq) { case MxL_IF_4_MHZ: val = 0x00; break; case MxL_IF_4_5_MHZ: val = 0x02; break; case MxL_IF_4_57_MHZ: val = 0x03; break; case MxL_IF_5_MHZ: val = 0x04; break; case MxL_IF_5_38_MHZ: val = 0x05; break; case MxL_IF_6_MHZ: val = 0x06; break; case MxL_IF_6_28_MHZ: val = 0x07; break; case MxL_IF_9_1915_MHZ: val = 0x08; break; case MxL_IF_35_25_MHZ: val = 0x09; break; case MxL_IF_36_15_MHZ: val = 0x0a; break; case MxL_IF_44_MHZ: val = 0x0b; break; default: mxl_fail(-EINVAL); return; } set_reg_bits(state->tab_init, 0x02, 0x0f, val); /* set inverted IF or normal IF */ set_reg_bits(state->tab_init, 0x02, 0x10, invert_if ? 0x10 : 0x00); state->if_freq = if_freq; return; } static void mxl5007t_set_xtal_freq_bits(struct mxl5007t_state *state, enum mxl5007t_xtal_freq xtal_freq) { switch (xtal_freq) { case MxL_XTAL_16_MHZ: /* select xtal freq & ref freq */ set_reg_bits(state->tab_init, 0x03, 0xf0, 0x00); set_reg_bits(state->tab_init, 0x05, 0x0f, 0x00); break; case MxL_XTAL_20_MHZ: set_reg_bits(state->tab_init, 0x03, 0xf0, 0x10); set_reg_bits(state->tab_init, 0x05, 0x0f, 0x01); break; case MxL_XTAL_20_25_MHZ: set_reg_bits(state->tab_init, 0x03, 0xf0, 0x20); set_reg_bits(state->tab_init, 0x05, 0x0f, 0x02); break; case MxL_XTAL_20_48_MHZ: set_reg_bits(state->tab_init, 0x03, 0xf0, 0x30); set_reg_bits(state->tab_init, 0x05, 0x0f, 0x03); break; case MxL_XTAL_24_MHZ: set_reg_bits(state->tab_init, 0x03, 0xf0, 0x40); set_reg_bits(state->tab_init, 0x05, 0x0f, 0x04); break; case MxL_XTAL_25_MHZ: set_reg_bits(state->tab_init, 0x03, 0xf0, 0x50); set_reg_bits(state->tab_init, 0x05, 0x0f, 0x05); break; case MxL_XTAL_25_14_MHZ: set_reg_bits(state->tab_init, 0x03, 0xf0, 0x60); set_reg_bits(state->tab_init, 0x05, 0x0f, 0x06); break; case MxL_XTAL_27_MHZ: set_reg_bits(state->tab_init, 0x03, 0xf0, 0x70); set_reg_bits(state->tab_init, 0x05, 0x0f, 0x07); break; case MxL_XTAL_28_8_MHZ: set_reg_bits(state->tab_init, 0x03, 0xf0, 0x80); set_reg_bits(state->tab_init, 0x05, 0x0f, 0x08); break; case MxL_XTAL_32_MHZ: set_reg_bits(state->tab_init, 0x03, 0xf0, 0x90); set_reg_bits(state->tab_init, 0x05, 0x0f, 0x09); break; case MxL_XTAL_40_MHZ: set_reg_bits(state->tab_init, 0x03, 0xf0, 0xa0); set_reg_bits(state->tab_init, 0x05, 0x0f, 0x0a); break; case MxL_XTAL_44_MHZ: set_reg_bits(state->tab_init, 0x03, 0xf0, 0xb0); set_reg_bits(state->tab_init, 0x05, 0x0f, 0x0b); break; case MxL_XTAL_48_MHZ: set_reg_bits(state->tab_init, 0x03, 0xf0, 0xc0); set_reg_bits(state->tab_init, 0x05, 0x0f, 0x0c); break; case MxL_XTAL_49_3811_MHZ: set_reg_bits(state->tab_init, 0x03, 0xf0, 0xd0); set_reg_bits(state->tab_init, 0x05, 0x0f, 0x0d); break; default: mxl_fail(-EINVAL); return; } return; } static struct reg_pair_t *mxl5007t_calc_init_regs(struct mxl5007t_state *state, enum mxl5007t_mode mode) { struct mxl5007t_config *cfg = state->config; memcpy(&state->tab_init, &init_tab, sizeof(init_tab)); memcpy(&state->tab_init_cable, &init_tab_cable, sizeof(init_tab_cable)); mxl5007t_set_mode_bits(state, mode, cfg->if_diff_out_level); mxl5007t_set_if_freq_bits(state, cfg->if_freq_hz, cfg->invert_if); mxl5007t_set_xtal_freq_bits(state, cfg->xtal_freq_hz); set_reg_bits(state->tab_init, 0x03, 0x08, cfg->clk_out_enable << 3); set_reg_bits(state->tab_init, 0x03, 0x07, cfg->clk_out_amp); if (mode >= MxL_MODE_CABLE) { copy_reg_bits(state->tab_init, state->tab_init_cable); return state->tab_init_cable; } else return state->tab_init; } /* ------------------------------------------------------------------------- */ enum mxl5007t_bw_mhz { MxL_BW_6MHz = 6, MxL_BW_7MHz = 7, MxL_BW_8MHz = 8, }; static void mxl5007t_set_bw_bits(struct mxl5007t_state *state, enum mxl5007t_bw_mhz bw) { u8 val; switch (bw) { case MxL_BW_6MHz: val = 0x15; /* set DIG_MODEINDEX, DIG_MODEINDEX_A, * and DIG_MODEINDEX_CSF */ break; case MxL_BW_7MHz: val = 0x2a; break; case MxL_BW_8MHz: val = 0x3f; break; default: mxl_fail(-EINVAL); return; } set_reg_bits(state->tab_rftune, 0x0c, 0x3f, val); return; } static struct reg_pair_t *mxl5007t_calc_rf_tune_regs(struct mxl5007t_state *state, u32 rf_freq, enum mxl5007t_bw_mhz bw) { u32 dig_rf_freq = 0; u32 temp; u32 frac_divider = 1000000; unsigned int i; memcpy(&state->tab_rftune, ®_pair_rftune, sizeof(reg_pair_rftune)); mxl5007t_set_bw_bits(state, bw); /* Convert RF frequency into 16 bits => * 10 bit integer (MHz) + 6 bit fraction */ dig_rf_freq = rf_freq / MHz; temp = rf_freq % MHz; for (i = 0; i < 6; i++) { dig_rf_freq <<= 1; frac_divider /= 2; if (temp > frac_divider) { temp -= frac_divider; dig_rf_freq++; } } /* add to have shift center point by 7.8124 kHz */ if (temp > 7812) dig_rf_freq++; set_reg_bits(state->tab_rftune, 0x0d, 0xff, (u8) dig_rf_freq); set_reg_bits(state->tab_rftune, 0x0e, 0xff, (u8) (dig_rf_freq >> 8)); if (rf_freq >= 333000000) set_reg_bits(state->tab_rftune, 0x80, 0x40, 0x40); return state->tab_rftune; } /* ------------------------------------------------------------------------- */ static int mxl5007t_write_reg(struct mxl5007t_state *state, u8 reg, u8 val) { u8 buf[] = { reg, val }; struct i2c_msg msg = { .addr = state->i2c_props.addr, .flags = 0, .buf = buf, .len = 2 }; int ret; ret = i2c_transfer(state->i2c_props.adap, &msg, 1); if (ret != 1) { mxl_err("failed!"); return -EREMOTEIO; } return 0; } static int mxl5007t_write_regs(struct mxl5007t_state *state, struct reg_pair_t *reg_pair) { unsigned int i = 0; int ret = 0; while ((ret == 0) && (reg_pair[i].reg || reg_pair[i].val)) { ret = mxl5007t_write_reg(state, reg_pair[i].reg, reg_pair[i].val); i++; } return ret; } static int mxl5007t_read_reg(struct mxl5007t_state *state, u8 reg, u8 *val) { u8 buf[2] = { 0xfb, reg }; struct i2c_msg msg[] = { { .addr = state->i2c_props.addr, .flags = 0, .buf = buf, .len = 2 }, { .addr = state->i2c_props.addr, .flags = I2C_M_RD, .buf = val, .len = 1 }, }; int ret; ret = i2c_transfer(state->i2c_props.adap, msg, 2); if (ret != 2) { mxl_err("failed!"); return -EREMOTEIO; } return 0; } static int mxl5007t_soft_reset(struct mxl5007t_state *state) { u8 d = 0xff; struct i2c_msg msg = { .addr = state->i2c_props.addr, .flags = 0, .buf = &d, .len = 1 }; int ret = i2c_transfer(state->i2c_props.adap, &msg, 1); if (ret != 1) { mxl_err("failed!"); return -EREMOTEIO; } return 0; } static int mxl5007t_tuner_init(struct mxl5007t_state *state, enum mxl5007t_mode mode) { struct reg_pair_t *init_regs; int ret; /* calculate initialization reg array */ init_regs = mxl5007t_calc_init_regs(state, mode); ret = mxl5007t_write_regs(state, init_regs); if (mxl_fail(ret)) goto fail; mdelay(1); fail: return ret; } static int mxl5007t_tuner_rf_tune(struct mxl5007t_state *state, u32 rf_freq_hz, enum mxl5007t_bw_mhz bw) { struct reg_pair_t *rf_tune_regs; int ret; /* calculate channel change reg array */ rf_tune_regs = mxl5007t_calc_rf_tune_regs(state, rf_freq_hz, bw); ret = mxl5007t_write_regs(state, rf_tune_regs); if (mxl_fail(ret)) goto fail; msleep(3); fail: return ret; } /* ------------------------------------------------------------------------- */ static int mxl5007t_synth_lock_status(struct mxl5007t_state *state, int *rf_locked, int *ref_locked) { u8 d; int ret; *rf_locked = 0; *ref_locked = 0; ret = mxl5007t_read_reg(state, 0xd8, &d); if (mxl_fail(ret)) goto fail; if ((d & 0x0c) == 0x0c) *rf_locked = 1; if ((d & 0x03) == 0x03) *ref_locked = 1; fail: return ret; } /* ------------------------------------------------------------------------- */ static int mxl5007t_get_status(struct dvb_frontend *fe, u32 *status) { struct mxl5007t_state *state = fe->tuner_priv; int rf_locked, ref_locked, ret; *status = 0; if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 1); ret = mxl5007t_synth_lock_status(state, &rf_locked, &ref_locked); if (mxl_fail(ret)) goto fail; mxl_debug("%s%s", rf_locked ? "rf locked " : "", ref_locked ? "ref locked" : ""); if ((rf_locked) || (ref_locked)) *status |= TUNER_STATUS_LOCKED; fail: if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); return ret; } /* ------------------------------------------------------------------------- */ static int mxl5007t_set_params(struct dvb_frontend *fe) { struct dtv_frontend_properties *c = &fe->dtv_property_cache; u32 delsys = c->delivery_system; struct mxl5007t_state *state = fe->tuner_priv; enum mxl5007t_bw_mhz bw; enum mxl5007t_mode mode; int ret; u32 freq = c->frequency; switch (delsys) { case SYS_ATSC: mode = MxL_MODE_ATSC; bw = MxL_BW_6MHz; break; case SYS_DVBC_ANNEX_B: mode = MxL_MODE_CABLE; bw = MxL_BW_6MHz; break; case SYS_DVBT: case SYS_DVBT2: mode = MxL_MODE_DVBT; switch (c->bandwidth_hz) { case 6000000: bw = MxL_BW_6MHz; break; case 7000000: bw = MxL_BW_7MHz; break; case 8000000: bw = MxL_BW_8MHz; break; default: return -EINVAL; } break; default: mxl_err("modulation type not supported!"); return -EINVAL; } if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 1); mutex_lock(&state->lock); ret = mxl5007t_tuner_init(state, mode); if (mxl_fail(ret)) goto fail; ret = mxl5007t_tuner_rf_tune(state, freq, bw); if (mxl_fail(ret)) goto fail; state->frequency = freq; state->bandwidth = c->bandwidth_hz; fail: mutex_unlock(&state->lock); if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); return ret; } /* ------------------------------------------------------------------------- */ static int mxl5007t_init(struct dvb_frontend *fe) { struct mxl5007t_state *state = fe->tuner_priv; int ret; if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 1); /* wake from standby */ ret = mxl5007t_write_reg(state, 0x01, 0x01); mxl_fail(ret); if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); return ret; } static int mxl5007t_sleep(struct dvb_frontend *fe) { struct mxl5007t_state *state = fe->tuner_priv; int ret; if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 1); /* enter standby mode */ ret = mxl5007t_write_reg(state, 0x01, 0x00); mxl_fail(ret); ret = mxl5007t_write_reg(state, 0x0f, 0x00); mxl_fail(ret); if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); return ret; } /* ------------------------------------------------------------------------- */ static int mxl5007t_get_frequency(struct dvb_frontend *fe, u32 *frequency) { struct mxl5007t_state *state = fe->tuner_priv; *frequency = state->frequency; return 0; } static int mxl5007t_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth) { struct mxl5007t_state *state = fe->tuner_priv; *bandwidth = state->bandwidth; return 0; } static int mxl5007t_get_if_frequency(struct dvb_frontend *fe, u32 *frequency) { struct mxl5007t_state *state = fe->tuner_priv; *frequency = 0; switch (state->if_freq) { case MxL_IF_4_MHZ: *frequency = 4000000; break; case MxL_IF_4_5_MHZ: *frequency = 4500000; break; case MxL_IF_4_57_MHZ: *frequency = 4570000; break; case MxL_IF_5_MHZ: *frequency = 5000000; break; case MxL_IF_5_38_MHZ: *frequency = 5380000; break; case MxL_IF_6_MHZ: *frequency = 6000000; break; case MxL_IF_6_28_MHZ: *frequency = 6280000; break; case MxL_IF_9_1915_MHZ: *frequency = 9191500; break; case MxL_IF_35_25_MHZ: *frequency = 35250000; break; case MxL_IF_36_15_MHZ: *frequency = 36150000; break; case MxL_IF_44_MHZ: *frequency = 44000000; break; } return 0; } static void mxl5007t_release(struct dvb_frontend *fe) { struct mxl5007t_state *state = fe->tuner_priv; mutex_lock(&mxl5007t_list_mutex); if (state) hybrid_tuner_release_state(state); mutex_unlock(&mxl5007t_list_mutex); fe->tuner_priv = NULL; } /* ------------------------------------------------------------------------- */ static const struct dvb_tuner_ops mxl5007t_tuner_ops = { .info = { .name = "MaxLinear MxL5007T", }, .init = mxl5007t_init, .sleep = mxl5007t_sleep, .set_params = mxl5007t_set_params, .get_status = mxl5007t_get_status, .get_frequency = mxl5007t_get_frequency, .get_bandwidth = mxl5007t_get_bandwidth, .release = mxl5007t_release, .get_if_frequency = mxl5007t_get_if_frequency, }; static int mxl5007t_get_chip_id(struct mxl5007t_state *state) { char *name; int ret; u8 id; ret = mxl5007t_read_reg(state, 0xd9, &id); if (mxl_fail(ret)) goto fail; switch (id) { case MxL_5007_V1_F1: name = "MxL5007.v1.f1"; break; case MxL_5007_V1_F2: name = "MxL5007.v1.f2"; break; case MxL_5007_V2_100_F1: name = "MxL5007.v2.100.f1"; break; case MxL_5007_V2_100_F2: name = "MxL5007.v2.100.f2"; break; case MxL_5007_V2_200_F1: name = "MxL5007.v2.200.f1"; break; case MxL_5007_V2_200_F2: name = "MxL5007.v2.200.f2"; break; case MxL_5007_V4: name = "MxL5007T.v4"; break; default: name = "MxL5007T"; printk(KERN_WARNING "%s: unknown rev (%02x)\n", __func__, id); id = MxL_UNKNOWN_ID; } state->chip_id = id; mxl_info("%s detected @ %d-%04x", name, i2c_adapter_id(state->i2c_props.adap), state->i2c_props.addr); return 0; fail: mxl_warn("unable to identify device @ %d-%04x", i2c_adapter_id(state->i2c_props.adap), state->i2c_props.addr); state->chip_id = MxL_UNKNOWN_ID; return ret; } struct dvb_frontend *mxl5007t_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 addr, struct mxl5007t_config *cfg) { struct mxl5007t_state *state = NULL; int instance, ret; mutex_lock(&mxl5007t_list_mutex); instance = hybrid_tuner_request_state(struct mxl5007t_state, state, hybrid_tuner_instance_list, i2c, addr, "mxl5007t"); switch (instance) { case 0: goto fail; case 1: /* new tuner instance */ state->config = cfg; mutex_init(&state->lock); if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 1); ret = mxl5007t_get_chip_id(state); if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); /* check return value of mxl5007t_get_chip_id */ if (mxl_fail(ret)) goto fail; break; default: /* existing tuner instance */ break; } if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 1); ret = mxl5007t_soft_reset(state); if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); if (mxl_fail(ret)) goto fail; if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 1); ret = mxl5007t_write_reg(state, 0x04, state->config->loop_thru_enable); if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); if (mxl_fail(ret)) goto fail; fe->tuner_priv = state; mutex_unlock(&mxl5007t_list_mutex); memcpy(&fe->ops.tuner_ops, &mxl5007t_tuner_ops, sizeof(struct dvb_tuner_ops)); return fe; fail: mutex_unlock(&mxl5007t_list_mutex); mxl5007t_release(fe); return NULL; } EXPORT_SYMBOL_GPL(mxl5007t_attach); MODULE_DESCRIPTION("MaxLinear MxL5007T Silicon IC tuner driver"); MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>"); MODULE_LICENSE("GPL"); MODULE_VERSION("0.2");