diff options
Diffstat (limited to 'drivers/media/dvb-frontends/ascot2e.c')
| -rw-r--r-- | drivers/media/dvb-frontends/ascot2e.c | 549 |
1 files changed, 549 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/ascot2e.c b/drivers/media/dvb-frontends/ascot2e.c new file mode 100644 index 000000000..52ce0e6e2 --- /dev/null +++ b/drivers/media/dvb-frontends/ascot2e.c @@ -0,0 +1,549 @@ +/* + * ascot2e.c + * + * Sony Ascot3E DVB-T/T2/C/C2 tuner driver + * + * Copyright 2012 Sony Corporation + * Copyright (C) 2014 NetUP Inc. + * Copyright (C) 2014 Sergey Kozlov <serjk@netup.ru> + * Copyright (C) 2014 Abylay Ospan <aospan@netup.ru> + * + * 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/slab.h> +#include <linux/module.h> +#include <linux/dvb/frontend.h> +#include <linux/types.h> +#include "ascot2e.h" +#include <media/dvb_frontend.h> + +#define MAX_WRITE_REGSIZE 10 + +enum ascot2e_state { + STATE_UNKNOWN, + STATE_SLEEP, + STATE_ACTIVE +}; + +struct ascot2e_priv { + u32 frequency; + u8 i2c_address; + struct i2c_adapter *i2c; + enum ascot2e_state state; + void *set_tuner_data; + int (*set_tuner)(void *, int); +}; + +enum ascot2e_tv_system_t { + ASCOT2E_DTV_DVBT_5, + ASCOT2E_DTV_DVBT_6, + ASCOT2E_DTV_DVBT_7, + ASCOT2E_DTV_DVBT_8, + ASCOT2E_DTV_DVBT2_1_7, + ASCOT2E_DTV_DVBT2_5, + ASCOT2E_DTV_DVBT2_6, + ASCOT2E_DTV_DVBT2_7, + ASCOT2E_DTV_DVBT2_8, + ASCOT2E_DTV_DVBC_6, + ASCOT2E_DTV_DVBC_8, + ASCOT2E_DTV_DVBC2_6, + ASCOT2E_DTV_DVBC2_8, + ASCOT2E_DTV_UNKNOWN +}; + +struct ascot2e_band_sett { + u8 if_out_sel; + u8 agc_sel; + u8 mix_oll; + u8 rf_gain; + u8 if_bpf_gc; + u8 fif_offset; + u8 bw_offset; + u8 bw; + u8 rf_oldet; + u8 if_bpf_f0; +}; + +#define ASCOT2E_AUTO 0xff +#define ASCOT2E_OFFSET(ofs) ((u8)(ofs) & 0x1F) +#define ASCOT2E_BW_6 0x00 +#define ASCOT2E_BW_7 0x01 +#define ASCOT2E_BW_8 0x02 +#define ASCOT2E_BW_1_7 0x03 + +static struct ascot2e_band_sett ascot2e_sett[] = { + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06, + ASCOT2E_OFFSET(-8), ASCOT2E_OFFSET(-6), ASCOT2E_BW_6, 0x0B, 0x00 }, + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06, + ASCOT2E_OFFSET(-8), ASCOT2E_OFFSET(-6), ASCOT2E_BW_6, 0x0B, 0x00 }, + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06, + ASCOT2E_OFFSET(-6), ASCOT2E_OFFSET(-4), ASCOT2E_BW_7, 0x0B, 0x00 }, + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06, + ASCOT2E_OFFSET(-4), ASCOT2E_OFFSET(-2), ASCOT2E_BW_8, 0x0B, 0x00 }, + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06, + ASCOT2E_OFFSET(-10), ASCOT2E_OFFSET(-16), ASCOT2E_BW_1_7, 0x0B, 0x00 }, + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06, + ASCOT2E_OFFSET(-8), ASCOT2E_OFFSET(-6), ASCOT2E_BW_6, 0x0B, 0x00 }, + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06, + ASCOT2E_OFFSET(-8), ASCOT2E_OFFSET(-6), ASCOT2E_BW_6, 0x0B, 0x00 }, + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06, + ASCOT2E_OFFSET(-6), ASCOT2E_OFFSET(-4), ASCOT2E_BW_7, 0x0B, 0x00 }, + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06, + ASCOT2E_OFFSET(-4), ASCOT2E_OFFSET(-2), ASCOT2E_BW_8, 0x0B, 0x00 }, + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x02, ASCOT2E_AUTO, 0x03, + ASCOT2E_OFFSET(-6), ASCOT2E_OFFSET(-8), ASCOT2E_BW_6, 0x09, 0x00 }, + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x02, ASCOT2E_AUTO, 0x03, + ASCOT2E_OFFSET(-2), ASCOT2E_OFFSET(-1), ASCOT2E_BW_8, 0x09, 0x00 }, + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x01, + ASCOT2E_OFFSET(-6), ASCOT2E_OFFSET(-4), ASCOT2E_BW_6, 0x09, 0x00 }, + { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x01, + ASCOT2E_OFFSET(-2), ASCOT2E_OFFSET(2), ASCOT2E_BW_8, 0x09, 0x00 } +}; + +static void ascot2e_i2c_debug(struct ascot2e_priv *priv, + u8 reg, u8 write, const u8 *data, u32 len) +{ + dev_dbg(&priv->i2c->dev, "ascot2e: I2C %s reg 0x%02x size %d\n", + (write == 0 ? "read" : "write"), reg, len); + print_hex_dump_bytes("ascot2e: I2C data: ", + DUMP_PREFIX_OFFSET, data, len); +} + +static int ascot2e_write_regs(struct ascot2e_priv *priv, + u8 reg, const u8 *data, u32 len) +{ + int ret; + u8 buf[MAX_WRITE_REGSIZE + 1]; + struct i2c_msg msg[1] = { + { + .addr = priv->i2c_address, + .flags = 0, + .len = len + 1, + .buf = buf, + } + }; + + if (len + 1 > sizeof(buf)) { + dev_warn(&priv->i2c->dev,"wr reg=%04x: len=%d is too big!\n", + reg, len + 1); + return -E2BIG; + } + + ascot2e_i2c_debug(priv, reg, 1, data, len); + buf[0] = reg; + memcpy(&buf[1], data, len); + ret = i2c_transfer(priv->i2c, msg, 1); + if (ret >= 0 && ret != 1) + ret = -EREMOTEIO; + if (ret < 0) { + dev_warn(&priv->i2c->dev, + "%s: i2c wr failed=%d reg=%02x len=%d\n", + KBUILD_MODNAME, ret, reg, len); + return ret; + } + return 0; +} + +static int ascot2e_write_reg(struct ascot2e_priv *priv, u8 reg, u8 val) +{ + u8 tmp = val; /* see gcc.gnu.org/bugzilla/show_bug.cgi?id=81715 */ + + return ascot2e_write_regs(priv, reg, &tmp, 1); +} + +static int ascot2e_read_regs(struct ascot2e_priv *priv, + u8 reg, u8 *val, u32 len) +{ + int ret; + struct i2c_msg msg[2] = { + { + .addr = priv->i2c_address, + .flags = 0, + .len = 1, + .buf = ®, + }, { + .addr = priv->i2c_address, + .flags = I2C_M_RD, + .len = len, + .buf = val, + } + }; + + ret = i2c_transfer(priv->i2c, &msg[0], 1); + if (ret >= 0 && ret != 1) + ret = -EREMOTEIO; + if (ret < 0) { + dev_warn(&priv->i2c->dev, + "%s: I2C rw failed=%d addr=%02x reg=%02x\n", + KBUILD_MODNAME, ret, priv->i2c_address, reg); + return ret; + } + ret = i2c_transfer(priv->i2c, &msg[1], 1); + if (ret >= 0 && ret != 1) + ret = -EREMOTEIO; + if (ret < 0) { + dev_warn(&priv->i2c->dev, + "%s: i2c rd failed=%d addr=%02x reg=%02x\n", + KBUILD_MODNAME, ret, priv->i2c_address, reg); + return ret; + } + ascot2e_i2c_debug(priv, reg, 0, val, len); + return 0; +} + +static int ascot2e_read_reg(struct ascot2e_priv *priv, u8 reg, u8 *val) +{ + return ascot2e_read_regs(priv, reg, val, 1); +} + +static int ascot2e_set_reg_bits(struct ascot2e_priv *priv, + u8 reg, u8 data, u8 mask) +{ + int res; + u8 rdata; + + if (mask != 0xff) { + res = ascot2e_read_reg(priv, reg, &rdata); + if (res != 0) + return res; + data = ((data & mask) | (rdata & (mask ^ 0xFF))); + } + return ascot2e_write_reg(priv, reg, data); +} + +static int ascot2e_enter_power_save(struct ascot2e_priv *priv) +{ + u8 data[2]; + + dev_dbg(&priv->i2c->dev, "%s()\n", __func__); + if (priv->state == STATE_SLEEP) + return 0; + data[0] = 0x00; + data[1] = 0x04; + ascot2e_write_regs(priv, 0x14, data, 2); + ascot2e_write_reg(priv, 0x50, 0x01); + priv->state = STATE_SLEEP; + return 0; +} + +static int ascot2e_leave_power_save(struct ascot2e_priv *priv) +{ + u8 data[2] = { 0xFB, 0x0F }; + + dev_dbg(&priv->i2c->dev, "%s()\n", __func__); + if (priv->state == STATE_ACTIVE) + return 0; + ascot2e_write_regs(priv, 0x14, data, 2); + ascot2e_write_reg(priv, 0x50, 0x00); + priv->state = STATE_ACTIVE; + return 0; +} + +static int ascot2e_init(struct dvb_frontend *fe) +{ + struct ascot2e_priv *priv = fe->tuner_priv; + + dev_dbg(&priv->i2c->dev, "%s()\n", __func__); + return ascot2e_leave_power_save(priv); +} + +static void ascot2e_release(struct dvb_frontend *fe) +{ + struct ascot2e_priv *priv = fe->tuner_priv; + + dev_dbg(&priv->i2c->dev, "%s()\n", __func__); + kfree(fe->tuner_priv); + fe->tuner_priv = NULL; +} + +static int ascot2e_sleep(struct dvb_frontend *fe) +{ + struct ascot2e_priv *priv = fe->tuner_priv; + + dev_dbg(&priv->i2c->dev, "%s()\n", __func__); + ascot2e_enter_power_save(priv); + return 0; +} + +static enum ascot2e_tv_system_t ascot2e_get_tv_system(struct dvb_frontend *fe) +{ + enum ascot2e_tv_system_t system = ASCOT2E_DTV_UNKNOWN; + struct dtv_frontend_properties *p = &fe->dtv_property_cache; + struct ascot2e_priv *priv = fe->tuner_priv; + + if (p->delivery_system == SYS_DVBT) { + if (p->bandwidth_hz <= 5000000) + system = ASCOT2E_DTV_DVBT_5; + else if (p->bandwidth_hz <= 6000000) + system = ASCOT2E_DTV_DVBT_6; + else if (p->bandwidth_hz <= 7000000) + system = ASCOT2E_DTV_DVBT_7; + else if (p->bandwidth_hz <= 8000000) + system = ASCOT2E_DTV_DVBT_8; + else { + system = ASCOT2E_DTV_DVBT_8; + p->bandwidth_hz = 8000000; + } + } else if (p->delivery_system == SYS_DVBT2) { + if (p->bandwidth_hz <= 5000000) + system = ASCOT2E_DTV_DVBT2_5; + else if (p->bandwidth_hz <= 6000000) + system = ASCOT2E_DTV_DVBT2_6; + else if (p->bandwidth_hz <= 7000000) + system = ASCOT2E_DTV_DVBT2_7; + else if (p->bandwidth_hz <= 8000000) + system = ASCOT2E_DTV_DVBT2_8; + else { + system = ASCOT2E_DTV_DVBT2_8; + p->bandwidth_hz = 8000000; + } + } else if (p->delivery_system == SYS_DVBC_ANNEX_A) { + if (p->bandwidth_hz <= 6000000) + system = ASCOT2E_DTV_DVBC_6; + else if (p->bandwidth_hz <= 8000000) + system = ASCOT2E_DTV_DVBC_8; + } + dev_dbg(&priv->i2c->dev, + "%s(): ASCOT2E DTV system %d (delsys %d, bandwidth %d)\n", + __func__, (int)system, p->delivery_system, p->bandwidth_hz); + return system; +} + +static int ascot2e_set_params(struct dvb_frontend *fe) +{ + u8 data[10]; + u32 frequency; + enum ascot2e_tv_system_t tv_system; + struct dtv_frontend_properties *p = &fe->dtv_property_cache; + struct ascot2e_priv *priv = fe->tuner_priv; + + dev_dbg(&priv->i2c->dev, "%s(): tune frequency %dkHz\n", + __func__, p->frequency / 1000); + tv_system = ascot2e_get_tv_system(fe); + + if (tv_system == ASCOT2E_DTV_UNKNOWN) { + dev_dbg(&priv->i2c->dev, "%s(): unknown DTV system\n", + __func__); + return -EINVAL; + } + if (priv->set_tuner) + priv->set_tuner(priv->set_tuner_data, 1); + frequency = roundup(p->frequency / 1000, 25); + if (priv->state == STATE_SLEEP) + ascot2e_leave_power_save(priv); + + /* IF_OUT_SEL / AGC_SEL setting */ + data[0] = 0x00; + if (ascot2e_sett[tv_system].agc_sel != ASCOT2E_AUTO) { + /* AGC pin setting from parameter table */ + data[0] |= (u8)( + (ascot2e_sett[tv_system].agc_sel & 0x03) << 3); + } + if (ascot2e_sett[tv_system].if_out_sel != ASCOT2E_AUTO) { + /* IFOUT pin setting from parameter table */ + data[0] |= (u8)( + (ascot2e_sett[tv_system].if_out_sel & 0x01) << 2); + } + /* Set bit[4:2] only */ + ascot2e_set_reg_bits(priv, 0x05, data[0], 0x1c); + /* 0x06 - 0x0F */ + /* REF_R setting (0x06) */ + if (tv_system == ASCOT2E_DTV_DVBC_6 || + tv_system == ASCOT2E_DTV_DVBC_8) { + /* xtal, xtal*2 */ + data[0] = (frequency > 500000) ? 16 : 32; + } else { + /* xtal/8, xtal/4 */ + data[0] = (frequency > 500000) ? 2 : 4; + } + /* XOSC_SEL=100uA */ + data[1] = 0x04; + /* KBW setting (0x08), KC0 setting (0x09), KC1 setting (0x0A) */ + if (tv_system == ASCOT2E_DTV_DVBC_6 || + tv_system == ASCOT2E_DTV_DVBC_8) { + data[2] = 18; + data[3] = 120; + data[4] = 20; + } else { + data[2] = 48; + data[3] = 10; + data[4] = 30; + } + /* ORDER/R2_RANGE/R2_BANK/C2_BANK setting (0x0B) */ + if (tv_system == ASCOT2E_DTV_DVBC_6 || + tv_system == ASCOT2E_DTV_DVBC_8) + data[5] = (frequency > 500000) ? 0x08 : 0x0c; + else + data[5] = (frequency > 500000) ? 0x30 : 0x38; + /* Set MIX_OLL (0x0C) value from parameter table */ + data[6] = ascot2e_sett[tv_system].mix_oll; + /* Set RF_GAIN (0x0D) setting from parameter table */ + if (ascot2e_sett[tv_system].rf_gain == ASCOT2E_AUTO) { + /* RF_GAIN auto control enable */ + ascot2e_write_reg(priv, 0x4E, 0x01); + /* RF_GAIN Default value */ + data[7] = 0x00; + } else { + /* RF_GAIN auto control disable */ + ascot2e_write_reg(priv, 0x4E, 0x00); + data[7] = ascot2e_sett[tv_system].rf_gain; + } + /* Set IF_BPF_GC/FIF_OFFSET (0x0E) value from parameter table */ + data[8] = (u8)((ascot2e_sett[tv_system].fif_offset << 3) | + (ascot2e_sett[tv_system].if_bpf_gc & 0x07)); + /* Set BW_OFFSET (0x0F) value from parameter table */ + data[9] = ascot2e_sett[tv_system].bw_offset; + ascot2e_write_regs(priv, 0x06, data, 10); + /* + * 0x45 - 0x47 + * LNA optimization setting + * RF_LNA_DIST1-5, RF_LNA_CM + */ + if (tv_system == ASCOT2E_DTV_DVBC_6 || + tv_system == ASCOT2E_DTV_DVBC_8) { + data[0] = 0x0F; + data[1] = 0x00; + data[2] = 0x01; + } else { + data[0] = 0x0F; + data[1] = 0x00; + data[2] = 0x03; + } + ascot2e_write_regs(priv, 0x45, data, 3); + /* 0x49 - 0x4A + Set RF_OLDET_ENX/RF_OLDET_OLL value from parameter table */ + data[0] = ascot2e_sett[tv_system].rf_oldet; + /* Set IF_BPF_F0 value from parameter table */ + data[1] = ascot2e_sett[tv_system].if_bpf_f0; + ascot2e_write_regs(priv, 0x49, data, 2); + /* + * Tune now + * RFAGC fast mode / RFAGC auto control enable + * (set bit[7], bit[5:4] only) + * vco_cal = 1, set MIX_OL_CPU_EN + */ + ascot2e_set_reg_bits(priv, 0x0c, 0x90, 0xb0); + /* Logic wake up, CPU wake up */ + data[0] = 0xc4; + data[1] = 0x40; + ascot2e_write_regs(priv, 0x03, data, 2); + /* 0x10 - 0x14 */ + data[0] = (u8)(frequency & 0xFF); /* 0x10: FRF_L */ + data[1] = (u8)((frequency >> 8) & 0xFF); /* 0x11: FRF_M */ + data[2] = (u8)((frequency >> 16) & 0x0F); /* 0x12: FRF_H (bit[3:0]) */ + /* 0x12: BW (bit[5:4]) */ + data[2] |= (u8)(ascot2e_sett[tv_system].bw << 4); + data[3] = 0xFF; /* 0x13: VCO calibration enable */ + data[4] = 0xFF; /* 0x14: Analog block enable */ + /* Tune (Burst write) */ + ascot2e_write_regs(priv, 0x10, data, 5); + msleep(50); + /* CPU deep sleep */ + ascot2e_write_reg(priv, 0x04, 0x00); + /* Logic sleep */ + ascot2e_write_reg(priv, 0x03, 0xC0); + /* RFAGC normal mode (set bit[5:4] only) */ + ascot2e_set_reg_bits(priv, 0x0C, 0x00, 0x30); + priv->frequency = frequency; + return 0; +} + +static int ascot2e_get_frequency(struct dvb_frontend *fe, u32 *frequency) +{ + struct ascot2e_priv *priv = fe->tuner_priv; + + *frequency = priv->frequency * 1000; + return 0; +} + +static const struct dvb_tuner_ops ascot2e_tuner_ops = { + .info = { + .name = "Sony ASCOT2E", + .frequency_min_hz = 1 * MHz, + .frequency_max_hz = 1200 * MHz, + .frequency_step_hz = 25 * kHz, + }, + .init = ascot2e_init, + .release = ascot2e_release, + .sleep = ascot2e_sleep, + .set_params = ascot2e_set_params, + .get_frequency = ascot2e_get_frequency, +}; + +struct dvb_frontend *ascot2e_attach(struct dvb_frontend *fe, + const struct ascot2e_config *config, + struct i2c_adapter *i2c) +{ + u8 data[4]; + struct ascot2e_priv *priv = NULL; + + priv = kzalloc(sizeof(struct ascot2e_priv), GFP_KERNEL); + if (priv == NULL) + return NULL; + priv->i2c_address = (config->i2c_address >> 1); + priv->i2c = i2c; + priv->set_tuner_data = config->set_tuner_priv; + priv->set_tuner = config->set_tuner_callback; + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + + /* 16 MHz xTal frequency */ + data[0] = 16; + /* VCO current setting */ + data[1] = 0x06; + /* Logic wake up, CPU boot */ + data[2] = 0xC4; + data[3] = 0x40; + ascot2e_write_regs(priv, 0x01, data, 4); + /* RFVGA optimization setting (RF_DIST0 - RF_DIST2) */ + data[0] = 0x10; + data[1] = 0x3F; + data[2] = 0x25; + ascot2e_write_regs(priv, 0x22, data, 3); + /* PLL mode setting */ + ascot2e_write_reg(priv, 0x28, 0x1e); + /* RSSI setting */ + ascot2e_write_reg(priv, 0x59, 0x04); + /* TODO check CPU HW error state here */ + msleep(80); + /* Xtal oscillator current control setting */ + ascot2e_write_reg(priv, 0x4c, 0x01); + /* XOSC_SEL=100uA */ + ascot2e_write_reg(priv, 0x07, 0x04); + /* CPU deep sleep */ + ascot2e_write_reg(priv, 0x04, 0x00); + /* Logic sleep */ + ascot2e_write_reg(priv, 0x03, 0xc0); + /* Power save setting */ + data[0] = 0x00; + data[1] = 0x04; + ascot2e_write_regs(priv, 0x14, data, 2); + ascot2e_write_reg(priv, 0x50, 0x01); + priv->state = STATE_SLEEP; + + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 0); + + memcpy(&fe->ops.tuner_ops, &ascot2e_tuner_ops, + sizeof(struct dvb_tuner_ops)); + fe->tuner_priv = priv; + dev_info(&priv->i2c->dev, + "Sony ASCOT2E attached on addr=%x at I2C adapter %p\n", + priv->i2c_address, priv->i2c); + return fe; +} +EXPORT_SYMBOL(ascot2e_attach); + +MODULE_DESCRIPTION("Sony ASCOT2E terr/cab tuner driver"); +MODULE_AUTHOR("info@netup.ru"); +MODULE_LICENSE("GPL"); |