diff options
Diffstat (limited to 'drivers/media/dvb/frontends/af9013.c')
| -rw-r--r-- | drivers/media/dvb/frontends/af9013.c | 1524 |
1 files changed, 0 insertions, 1524 deletions
diff --git a/drivers/media/dvb/frontends/af9013.c b/drivers/media/dvb/frontends/af9013.c deleted file mode 100644 index 5bc570d77846..000000000000 --- a/drivers/media/dvb/frontends/af9013.c +++ /dev/null @@ -1,1524 +0,0 @@ -/* - * Afatech AF9013 demodulator driver - * - * Copyright (C) 2007 Antti Palosaari <crope@iki.fi> - * Copyright (C) 2011 Antti Palosaari <crope@iki.fi> - * - * Thanks to Afatech who kindly provided information. - * - * 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 "af9013_priv.h" - -int af9013_debug; -module_param_named(debug, af9013_debug, int, 0644); -MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); - -struct af9013_state { - struct i2c_adapter *i2c; - struct dvb_frontend fe; - struct af9013_config config; - - /* tuner/demod RF and IF AGC limits used for signal strength calc */ - u8 signal_strength_en, rf_50, rf_80, if_50, if_80; - u16 signal_strength; - u32 ber; - u32 ucblocks; - u16 snr; - u32 bandwidth_hz; - fe_status_t fe_status; - unsigned long set_frontend_jiffies; - unsigned long read_status_jiffies; - bool first_tune; - bool i2c_gate_state; - unsigned int statistics_step:3; - struct delayed_work statistics_work; -}; - -/* write multiple registers */ -static int af9013_wr_regs_i2c(struct af9013_state *priv, u8 mbox, u16 reg, - const u8 *val, int len) -{ - int ret; - u8 buf[3+len]; - struct i2c_msg msg[1] = { - { - .addr = priv->config.i2c_addr, - .flags = 0, - .len = sizeof(buf), - .buf = buf, - } - }; - - buf[0] = (reg >> 8) & 0xff; - buf[1] = (reg >> 0) & 0xff; - buf[2] = mbox; - memcpy(&buf[3], val, len); - - ret = i2c_transfer(priv->i2c, msg, 1); - if (ret == 1) { - ret = 0; - } else { - warn("i2c wr failed=%d reg=%04x len=%d", ret, reg, len); - ret = -EREMOTEIO; - } - return ret; -} - -/* read multiple registers */ -static int af9013_rd_regs_i2c(struct af9013_state *priv, u8 mbox, u16 reg, - u8 *val, int len) -{ - int ret; - u8 buf[3]; - struct i2c_msg msg[2] = { - { - .addr = priv->config.i2c_addr, - .flags = 0, - .len = 3, - .buf = buf, - }, { - .addr = priv->config.i2c_addr, - .flags = I2C_M_RD, - .len = len, - .buf = val, - } - }; - - buf[0] = (reg >> 8) & 0xff; - buf[1] = (reg >> 0) & 0xff; - buf[2] = mbox; - - ret = i2c_transfer(priv->i2c, msg, 2); - if (ret == 2) { - ret = 0; - } else { - warn("i2c rd failed=%d reg=%04x len=%d", ret, reg, len); - ret = -EREMOTEIO; - } - return ret; -} - -/* write multiple registers */ -static int af9013_wr_regs(struct af9013_state *priv, u16 reg, const u8 *val, - int len) -{ - int ret, i; - u8 mbox = (0 << 7)|(0 << 6)|(1 << 1)|(1 << 0); - - if ((priv->config.ts_mode == AF9013_TS_USB) && - ((reg & 0xff00) != 0xff00) && ((reg & 0xff00) != 0xae00)) { - mbox |= ((len - 1) << 2); - ret = af9013_wr_regs_i2c(priv, mbox, reg, val, len); - } else { - for (i = 0; i < len; i++) { - ret = af9013_wr_regs_i2c(priv, mbox, reg+i, val+i, 1); - if (ret) - goto err; - } - } - -err: - return 0; -} - -/* read multiple registers */ -static int af9013_rd_regs(struct af9013_state *priv, u16 reg, u8 *val, int len) -{ - int ret, i; - u8 mbox = (0 << 7)|(0 << 6)|(1 << 1)|(0 << 0); - - if ((priv->config.ts_mode == AF9013_TS_USB) && - ((reg & 0xff00) != 0xff00) && ((reg & 0xff00) != 0xae00)) { - mbox |= ((len - 1) << 2); - ret = af9013_rd_regs_i2c(priv, mbox, reg, val, len); - } else { - for (i = 0; i < len; i++) { - ret = af9013_rd_regs_i2c(priv, mbox, reg+i, val+i, 1); - if (ret) - goto err; - } - } - -err: - return 0; -} - -/* write single register */ -static int af9013_wr_reg(struct af9013_state *priv, u16 reg, u8 val) -{ - return af9013_wr_regs(priv, reg, &val, 1); -} - -/* read single register */ -static int af9013_rd_reg(struct af9013_state *priv, u16 reg, u8 *val) -{ - return af9013_rd_regs(priv, reg, val, 1); -} - -static int af9013_write_ofsm_regs(struct af9013_state *state, u16 reg, u8 *val, - u8 len) -{ - u8 mbox = (1 << 7)|(1 << 6)|((len - 1) << 2)|(1 << 1)|(1 << 0); - return af9013_wr_regs_i2c(state, mbox, reg, val, len); -} - -static int af9013_wr_reg_bits(struct af9013_state *state, u16 reg, int pos, - int len, u8 val) -{ - int ret; - u8 tmp, mask; - - /* no need for read if whole reg is written */ - if (len != 8) { - ret = af9013_rd_reg(state, reg, &tmp); - if (ret) - return ret; - - mask = (0xff >> (8 - len)) << pos; - val <<= pos; - tmp &= ~mask; - val |= tmp; - } - - return af9013_wr_reg(state, reg, val); -} - -static int af9013_rd_reg_bits(struct af9013_state *state, u16 reg, int pos, - int len, u8 *val) -{ - int ret; - u8 tmp; - - ret = af9013_rd_reg(state, reg, &tmp); - if (ret) - return ret; - - *val = (tmp >> pos); - *val &= (0xff >> (8 - len)); - - return 0; -} - -static int af9013_set_gpio(struct af9013_state *state, u8 gpio, u8 gpioval) -{ - int ret; - u8 pos; - u16 addr; - - dbg("%s: gpio=%d gpioval=%02x", __func__, gpio, gpioval); - - /* - * GPIO0 & GPIO1 0xd735 - * GPIO2 & GPIO3 0xd736 - */ - - switch (gpio) { - case 0: - case 1: - addr = 0xd735; - break; - case 2: - case 3: - addr = 0xd736; - break; - - default: - err("invalid gpio:%d\n", gpio); - ret = -EINVAL; - goto err; - }; - - switch (gpio) { - case 0: - case 2: - pos = 0; - break; - case 1: - case 3: - default: - pos = 4; - break; - }; - - ret = af9013_wr_reg_bits(state, addr, pos, 4, gpioval); - if (ret) - goto err; - - return ret; -err: - dbg("%s: failed=%d", __func__, ret); - return ret; -} - -static u32 af913_div(u32 a, u32 b, u32 x) -{ - u32 r = 0, c = 0, i; - - dbg("%s: a=%d b=%d x=%d", __func__, a, b, x); - - if (a > b) { - c = a / b; - a = a - c * b; - } - - for (i = 0; i < x; i++) { - if (a >= b) { - r += 1; - a -= b; - } - a <<= 1; - r <<= 1; - } - r = (c << (u32)x) + r; - - dbg("%s: a=%d b=%d x=%d r=%x", __func__, a, b, x, r); - return r; -} - -static int af9013_power_ctrl(struct af9013_state *state, u8 onoff) -{ - int ret, i; - u8 tmp; - - dbg("%s: onoff=%d", __func__, onoff); - - /* enable reset */ - ret = af9013_wr_reg_bits(state, 0xd417, 4, 1, 1); - if (ret) - goto err; - - /* start reset mechanism */ - ret = af9013_wr_reg(state, 0xaeff, 1); - if (ret) - goto err; - - /* wait reset performs */ - for (i = 0; i < 150; i++) { - ret = af9013_rd_reg_bits(state, 0xd417, 1, 1, &tmp); - if (ret) - goto err; - - if (tmp) - break; /* reset done */ - - usleep_range(5000, 25000); - } - - if (!tmp) - return -ETIMEDOUT; - - if (onoff) { - /* clear reset */ - ret = af9013_wr_reg_bits(state, 0xd417, 1, 1, 0); - if (ret) - goto err; - - /* disable reset */ - ret = af9013_wr_reg_bits(state, 0xd417, 4, 1, 0); - - /* power on */ - ret = af9013_wr_reg_bits(state, 0xd73a, 3, 1, 0); - } else { - /* power off */ - ret = af9013_wr_reg_bits(state, 0xd73a, 3, 1, 1); - } - - return ret; -err: - dbg("%s: failed=%d", __func__, ret); - return ret; -} - -static int af9013_statistics_ber_unc_start(struct dvb_frontend *fe) -{ - struct af9013_state *state = fe->demodulator_priv; - int ret; - - dbg("%s", __func__); - - /* reset and start BER counter */ - ret = af9013_wr_reg_bits(state, 0xd391, 4, 1, 1); - if (ret) - goto err; - - return ret; -err: - dbg("%s: failed=%d", __func__, ret); - return ret; -} - -static int af9013_statistics_ber_unc_result(struct dvb_frontend *fe) -{ - struct af9013_state *state = fe->demodulator_priv; - int ret; - u8 buf[5]; - - dbg("%s", __func__); - - /* check if error bit count is ready */ - ret = af9013_rd_reg_bits(state, 0xd391, 4, 1, &buf[0]); - if (ret) - goto err; - - if (!buf[0]) { - dbg("%s: not ready", __func__); - return 0; - } - - ret = af9013_rd_regs(state, 0xd387, buf, 5); - if (ret) - goto err; - - state->ber = (buf[2] << 16) | (buf[1] << 8) | buf[0]; - state->ucblocks += (buf[4] << 8) | buf[3]; - - return ret; -err: - dbg("%s: failed=%d", __func__, ret); - return ret; -} - -static int af9013_statistics_snr_start(struct dvb_frontend *fe) -{ - struct af9013_state *state = fe->demodulator_priv; - int ret; - - dbg("%s", __func__); - - /* start SNR meas */ - ret = af9013_wr_reg_bits(state, 0xd2e1, 3, 1, 1); - if (ret) - goto err; - - return ret; -err: - dbg("%s: failed=%d", __func__, ret); - return ret; -} - -static int af9013_statistics_snr_result(struct dvb_frontend *fe) -{ - struct af9013_state *state = fe->demodulator_priv; - int ret, i, len; - u8 buf[3], tmp; - u32 snr_val; - const struct af9013_snr *uninitialized_var(snr_lut); - - dbg("%s", __func__); - - /* check if SNR ready */ - ret = af9013_rd_reg_bits(state, 0xd2e1, 3, 1, &tmp); - if (ret) - goto err; - - if (!tmp) { - dbg("%s: not ready", __func__); - return 0; - } - - /* read value */ - ret = af9013_rd_regs(state, 0xd2e3, buf, 3); - if (ret) - goto err; - - snr_val = (buf[2] << 16) | (buf[1] << 8) | buf[0]; - - /* read current modulation */ - ret = af9013_rd_reg(state, 0xd3c1, &tmp); - if (ret) - goto err; - - switch ((tmp >> 6) & 3) { - case 0: - len = ARRAY_SIZE(qpsk_snr_lut); - snr_lut = qpsk_snr_lut; - break; - case 1: - len = ARRAY_SIZE(qam16_snr_lut); - snr_lut = qam16_snr_lut; - break; - case 2: - len = ARRAY_SIZE(qam64_snr_lut); - snr_lut = qam64_snr_lut; - break; - default: - goto err; - break; - } - - for (i = 0; i < len; i++) { - tmp = snr_lut[i].snr; - - if (snr_val < snr_lut[i].val) - break; - } - state->snr = tmp * 10; /* dB/10 */ - - return ret; -err: - dbg("%s: failed=%d", __func__, ret); - return ret; -} - -static int af9013_statistics_signal_strength(struct dvb_frontend *fe) -{ - struct af9013_state *state = fe->demodulator_priv; - int ret = 0; - u8 buf[2], rf_gain, if_gain; - int signal_strength; - - dbg("%s", __func__); - - if (!state->signal_strength_en) - return 0; - - ret = af9013_rd_regs(state, 0xd07c, buf, 2); - if (ret) - goto err; - - rf_gain = buf[0]; - if_gain = buf[1]; - - signal_strength = (0xffff / \ - (9 * (state->rf_50 + state->if_50) - \ - 11 * (state->rf_80 + state->if_80))) * \ - (10 * (rf_gain + if_gain) - \ - 11 * (state->rf_80 + state->if_80)); - if (signal_strength < 0) - signal_strength = 0; - else if (signal_strength > 0xffff) - signal_strength = 0xffff; - - state->signal_strength = signal_strength; - - return ret; -err: - dbg("%s: failed=%d", __func__, ret); - return ret; -} - -static void af9013_statistics_work(struct work_struct *work) -{ - struct af9013_state *state = container_of(work, - struct af9013_state, statistics_work.work); - unsigned int next_msec; - - /* update only signal strength when demod is not locked */ - if (!(state->fe_status & FE_HAS_LOCK)) { - state->statistics_step = 0; - state->ber = 0; - state->snr = 0; - } - - switch (state->statistics_step) { - default: - state->statistics_step = 0; - case 0: - af9013_statistics_signal_strength(&state->fe); - state->statistics_step++; - next_msec = 300; - break; - case 1: - af9013_statistics_snr_start(&state->fe); - state->statistics_step++; - next_msec = 200; - break; - case 2: - af9013_statistics_ber_unc_start(&state->fe); - state->statistics_step++; - next_msec = 1000; - break; - case 3: - af9013_statistics_snr_result(&state->fe); - state->statistics_step++; - next_msec = 400; - break; - case 4: - af9013_statistics_ber_unc_result(&state->fe); - state->statistics_step++; - next_msec = 100; - break; - } - - schedule_delayed_work(&state->statistics_work, - msecs_to_jiffies(next_msec)); -} - -static int af9013_get_tune_settings(struct dvb_frontend *fe, - struct dvb_frontend_tune_settings *fesettings) -{ - fesettings->min_delay_ms = 800; - fesettings->step_size = 0; - fesettings->max_drift = 0; - - return 0; -} - -static int af9013_set_frontend(struct dvb_frontend *fe) -{ - struct af9013_state *state = fe->demodulator_priv; - struct dtv_frontend_properties *c = &fe->dtv_property_cache; - int ret, i, sampling_freq; - bool auto_mode, spec_inv; - u8 buf[6]; - u32 if_frequency, freq_cw; - - dbg("%s: frequency=%d bandwidth_hz=%d", __func__, - c->frequency, c->bandwidth_hz); - - /* program tuner */ - if (fe->ops.tuner_ops.set_params) - fe->ops.tuner_ops.set_params(fe); - - /* program CFOE coefficients */ - if (c->bandwidth_hz != state->bandwidth_hz) { - for (i = 0; i < ARRAY_SIZE(coeff_lut); i++) { - if (coeff_lut[i].clock == state->config.clock && - coeff_lut[i].bandwidth_hz == c->bandwidth_hz) { - break; - } - } - - ret = af9013_wr_regs(state, 0xae00, coeff_lut[i].val, - sizeof(coeff_lut[i].val)); - } - - /* program frequency control */ - if (c->bandwidth_hz != state->bandwidth_hz || state->first_tune) { - /* get used IF frequency */ - if (fe->ops.tuner_ops.get_if_frequency) - fe->ops.tuner_ops.get_if_frequency(fe, &if_frequency); - else - if_frequency = state->config.if_frequency; - - sampling_freq = if_frequency; - - while (sampling_freq > (state->config.clock / 2)) - sampling_freq -= state->config.clock; - - if (sampling_freq < 0) { - sampling_freq *= -1; - spec_inv = state->config.spec_inv; - } else { - spec_inv = !state->config.spec_inv; - } - - freq_cw = af913_div(sampling_freq, state->config.clock, 23); - - if (spec_inv) - freq_cw = 0x800000 - freq_cw; - - buf[0] = (freq_cw >> 0) & 0xff; - buf[1] = (freq_cw >> 8) & 0xff; - buf[2] = (freq_cw >> 16) & 0x7f; - - freq_cw = 0x800000 - freq_cw; - - buf[3] = (freq_cw >> 0) & 0xff; - buf[4] = (freq_cw >> 8) & 0xff; - buf[5] = (freq_cw >> 16) & 0x7f; - - ret = af9013_wr_regs(state, 0xd140, buf, 3); - if (ret) - goto err; - - ret = af9013_wr_regs(state, 0x9be7, buf, 6); - if (ret) - goto err; - } - - /* clear TPS lock flag */ - ret = af9013_wr_reg_bits(state, 0xd330, 3, 1, 1); - if (ret) - goto err; - - /* clear MPEG2 lock flag */ - ret = af9013_wr_reg_bits(state, 0xd507, 6, 1, 0); - if (ret) - goto err; - - /* empty channel function */ - ret = af9013_wr_reg_bits(state, 0x9bfe, 0, 1, 0); - if (ret) - goto err; - - /* empty DVB-T channel function */ - ret = af9013_wr_reg_bits(state, 0x9bc2, 0, 1, 0); - if (ret) - goto err; - - /* transmission parameters */ - auto_mode = false; - memset(buf, 0, 3); - - switch (c->transmission_mode) { - case TRANSMISSION_MODE_AUTO: - auto_mode = 1; - break; - case TRANSMISSION_MODE_2K: - break; - case TRANSMISSION_MODE_8K: - buf[0] |= (1 << 0); - break; - default: - dbg("%s: invalid transmission_mode", __func__); - auto_mode = 1; - } - - switch (c->guard_interval) { - case GUARD_INTERVAL_AUTO: - auto_mode = 1; - break; - case GUARD_INTERVAL_1_32: - break; - case GUARD_INTERVAL_1_16: - buf[0] |= (1 << 2); - break; - case GUARD_INTERVAL_1_8: - buf[0] |= (2 << 2); - break; - case GUARD_INTERVAL_1_4: - buf[0] |= (3 << 2); - break; - default: - dbg("%s: invalid guard_interval", __func__); - auto_mode = 1; - } - - switch (c->hierarchy) { - case HIERARCHY_AUTO: - auto_mode = 1; - break; - case HIERARCHY_NONE: - break; - case HIERARCHY_1: - buf[0] |= (1 << 4); - break; - case HIERARCHY_2: - buf[0] |= (2 << 4); - break; - case HIERARCHY_4: - buf[0] |= (3 << 4); - break; - default: - dbg("%s: invalid hierarchy", __func__); - auto_mode = 1; - }; - - switch (c->modulation) { - case QAM_AUTO: - auto_mode = 1; - break; - case QPSK: - break; - case QAM_16: - buf[1] |= (1 << 6); - break; - case QAM_64: - buf[1] |= (2 << 6); - break; - default: - dbg("%s: invalid modulation", __func__); - auto_mode = 1; - } - - /* Use HP. How and which case we can switch to LP? */ - buf[1] |= (1 << 4); - - switch (c->code_rate_HP) { - case FEC_AUTO: - auto_mode = 1; - break; - case FEC_1_2: - break; - case FEC_2_3: - buf[2] |= (1 << 0); - break; - case FEC_3_4: - buf[2] |= (2 << 0); - break; - case FEC_5_6: - buf[2] |= (3 << 0); - break; - case FEC_7_8: - buf[2] |= (4 << 0); - break; - default: - dbg("%s: invalid code_rate_HP", __func__); - auto_mode = 1; - } - - switch (c->code_rate_LP) { - case FEC_AUTO: - auto_mode = 1; - break; - case FEC_1_2: - break; - case FEC_2_3: - buf[2] |= (1 << 3); - break; - case FEC_3_4: - buf[2] |= (2 << 3); - break; - case FEC_5_6: - buf[2] |= (3 << 3); - break; - case FEC_7_8: - buf[2] |= (4 << 3); - break; - case FEC_NONE: - break; - default: - dbg("%s: invalid code_rate_LP", __func__); - auto_mode = 1; - } - - switch (c->bandwidth_hz) { - case 6000000: - break; - case 7000000: - buf[1] |= (1 << 2); - break; - case 8000000: - buf[1] |= (2 << 2); - break; - default: - dbg("%s: invalid bandwidth_hz", __func__); - ret = -EINVAL; - goto err; - } - - ret = af9013_wr_regs(state, 0xd3c0, buf, 3); - if (ret) - goto err; - - if (auto_mode) { - /* clear easy mode flag */ - ret = af9013_wr_reg(state, 0xaefd, 0); - if (ret) - goto err; - - dbg("%s: auto params", __func__); - } else { - /* set easy mode flag */ - ret = af9013_wr_reg(state, 0xaefd, 1); - if (ret) - goto err; - - ret = af9013_wr_reg(state, 0xaefe, 0); - if (ret) - goto err; - - dbg("%s: manual params", __func__); - } - - /* tune */ - ret = af9013_wr_reg(state, 0xffff, 0); - if (ret) - goto err; - - state->bandwidth_hz = c->bandwidth_hz; - state->set_frontend_jiffies = jiffies; - state->first_tune = false; - - return ret; -err: - dbg("%s: failed=%d", __func__, ret); - return ret; -} - -static int af9013_get_frontend(struct dvb_frontend *fe) -{ - struct dtv_frontend_properties *c = &fe->dtv_property_cache; - struct af9013_state *state = fe->demodulator_priv; - int ret; - u8 buf[3]; - - dbg("%s", __func__); - - ret = af9013_rd_regs(state, 0xd3c0, buf, 3); - if (ret) - goto err; - - switch ((buf[1] >> 6) & 3) { - case 0: - c->modulation = QPSK; - break; - case 1: - c->modulation = QAM_16; - break; - case 2: - c->modulation = QAM_64; - break; - } - - switch ((buf[0] >> 0) & 3) { - case 0: - c->transmission_mode = TRANSMISSION_MODE_2K; - break; - case 1: - c->transmission_mode = TRANSMISSION_MODE_8K; - } - - switch ((buf[0] >> 2) & 3) { - case 0: - c->guard_interval = GUARD_INTERVAL_1_32; - break; - case 1: - c->guard_interval = GUARD_INTERVAL_1_16; - break; - case 2: - c->guard_interval = GUARD_INTERVAL_1_8; - break; - case 3: - c->guard_interval = GUARD_INTERVAL_1_4; - break; - } - - switch ((buf[0] >> 4) & 7) { - case 0: - c->hierarchy = HIERARCHY_NONE; - break; - case 1: - c->hierarchy = HIERARCHY_1; - break; - case 2: - c->hierarchy = HIERARCHY_2; - break; - case 3: - c->hierarchy = HIERARCHY_4; - break; - } - - switch ((buf[2] >> 0) & 7) { - case 0: - c->code_rate_HP = FEC_1_2; - break; - case 1: - c->code_rate_HP = FEC_2_3; - break; - case 2: - c->code_rate_HP = FEC_3_4; - break; - case 3: - c->code_rate_HP = FEC_5_6; - break; - case 4: - c->code_rate_HP = FEC_7_8; - break; - } - - switch ((buf[2] >> 3) & 7) { - case 0: - c->code_rate_LP = FEC_1_2; - break; - case 1: - c->code_rate_LP = FEC_2_3; - break; - case 2: - c->code_rate_LP = FEC_3_4; - break; - case 3: - c->code_rate_LP = FEC_5_6; - break; - case 4: - c->code_rate_LP = FEC_7_8; - break; - } - - switch ((buf[1] >> 2) & 3) { - case 0: - c->bandwidth_hz = 6000000; - break; - case 1: - c->bandwidth_hz = 7000000; - break; - case 2: - c->bandwidth_hz = 8000000; - break; - } - - return ret; -err: - dbg("%s: failed=%d", __func__, ret); - return ret; -} - -static int af9013_read_status(struct dvb_frontend *fe, fe_status_t *status) -{ - struct af9013_state *state = fe->demodulator_priv; - int ret; - u8 tmp; - - /* - * Return status from the cache if it is younger than 2000ms with the - * exception of last tune is done during 4000ms. - */ - if (time_is_after_jiffies( - state->read_status_jiffies + msecs_to_jiffies(2000)) && - time_is_before_jiffies( - state->set_frontend_jiffies + msecs_to_jiffies(4000)) - ) { - *status = state->fe_status; - return 0; - } else { - *status = 0; - } - - /* MPEG2 lock */ - ret = af9013_rd_reg_bits(state, 0xd507, 6, 1, &tmp); - if (ret) - goto err; - - if (tmp) - *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | - FE_HAS_SYNC | FE_HAS_LOCK; - - if (!*status) { - /* TPS lock */ - ret = af9013_rd_reg_bits(state, 0xd330, 3, 1, &tmp); - if (ret) - goto err; - - if (tmp) - *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | - FE_HAS_VITERBI; - } - - state->fe_status = *status; - state->read_status_jiffies = jiffies; - - return ret; -err: - dbg("%s: failed=%d", __func__, ret); - return ret; -} - -static int af9013_read_snr(struct dvb_frontend *fe, u16 *snr) -{ - struct af9013_state *state = fe->demodulator_priv; - *snr = state->snr; - return 0; -} - -static int af9013_read_signal_strength(struct dvb_frontend *fe, u16 *strength) -{ - struct af9013_state *state = fe->demodulator_priv; - *strength = state->signal_strength; - return 0; -} - -static int af9013_read_ber(struct dvb_frontend *fe, u32 *ber) -{ - struct af9013_state *state = fe->demodulator_priv; - *ber = state->ber; - return 0; -} - -static int af9013_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) -{ - struct af9013_state *state = fe->demodulator_priv; - *ucblocks = state->ucblocks; - return 0; -} - -static int af9013_init(struct dvb_frontend *fe) -{ - struct af9013_state *state = fe->demodulator_priv; - int ret, i, len; - u8 buf[3], tmp; - u32 adc_cw; - const struct af9013_reg_bit *init; - - dbg("%s", __func__); - - /* power on */ - ret = af9013_power_ctrl(state, 1); - if (ret) - goto err; - - /* enable ADC */ - ret = af9013_wr_reg(state, 0xd73a, 0xa4); - if (ret) - goto err; - - /* write API version to firmware */ - ret = af9013_wr_regs(state, 0x9bf2, state->config.api_version, 4); - if (ret) - goto err; - - /* program ADC control */ - switch (state->config.clock) { - case 28800000: /* 28.800 MHz */ - tmp = 0; - break; - case 20480000: /* 20.480 MHz */ - tmp = 1; - break; - case 28000000: /* 28.000 MHz */ - tmp = 2; - break; - case 25000000: /* 25.000 MHz */ - tmp = 3; - break; - default: - err("invalid clock"); - return -EINVAL; - } - - adc_cw = af913_div(state->config.clock, 1000000ul, 19); - buf[0] = (adc_cw >> 0) & 0xff; - buf[1] = (adc_cw >> 8) & 0xff; - buf[2] = (adc_cw >> 16) & 0xff; - - ret = af9013_wr_regs(state, 0xd180, buf, 3); - if (ret) - goto err; - - ret = af9013_wr_reg_bits(state, 0x9bd2, 0, 4, tmp); - if (ret) - goto err; - - /* set I2C master clock */ - ret = af9013_wr_reg(state, 0xd416, 0x14); - if (ret) - goto err; - - /* set 16 embx */ - ret = af9013_wr_reg_bits(state, 0xd700, 1, 1, 1); - if (ret) - goto err; - - /* set no trigger */ - ret = af9013_wr_reg_bits(state, 0xd700, 2, 1, 0); - if (ret) - goto err; - - /* set read-update bit for constellation */ - ret = af9013_wr_reg_bits(state, 0xd371, 1, 1, 1); - if (ret) - goto err; - - /* settings for mp2if */ - if (state->config.ts_mode == AF9013_TS_USB) { - /* AF9015 split PSB to 1.5k + 0.5k */ - ret = af9013_wr_reg_bits(state, 0xd50b, 2, 1, 1); - if (ret) - goto err; - } else { - /* AF9013 change the output bit to data7 */ - ret = af9013_wr_reg_bits(state, 0xd500, 3, 1, 1); - if (ret) - goto err; - - /* AF9013 set mpeg to full speed */ - ret = af9013_wr_reg_bits(state, 0xd502, 4, 1, 1); - if (ret) - goto err; - } - - ret = af9013_wr_reg_bits(state, 0xd520, 4, 1, 1); - if (ret) - goto err; - - /* load OFSM settings */ - dbg("%s: load ofsm settings", __func__); - len = ARRAY_SIZE(ofsm_init); - init = ofsm_init; - for (i = 0; i < len; i++) { - ret = af9013_wr_reg_bits(state, init[i].addr, init[i].pos, - init[i].len, init[i].val); - if (ret) - goto err; - } - - /* load tuner specific settings */ - dbg("%s: load tuner specific settings", __func__); - switch (state->config.tuner) { - case AF9013_TUNER_MXL5003D: - len = ARRAY_SIZE(tuner_init_mxl5003d); - init = tuner_init_mxl5003d; - break; - case AF9013_TUNER_MXL5005D: - case AF9013_TUNER_MXL5005R: - case AF9013_TUNER_MXL5007T: - len = ARRAY_SIZE(tuner_init_mxl5005); - init = tuner_init_mxl5005; - break; - case AF9013_TUNER_ENV77H11D5: - len = ARRAY_SIZE(tuner_init_env77h11d5); - init = tuner_init_env77h11d5; - break; - case AF9013_TUNER_MT2060: - len = ARRAY_SIZE(tuner_init_mt2060); - init = tuner_init_mt2060; - break; - case AF9013_TUNER_MC44S803: - len = ARRAY_SIZE(tuner_init_mc44s803); - init = tuner_init_mc44s803; - break; - case AF9013_TUNER_QT1010: - case AF9013_TUNER_QT1010A: - len = ARRAY_SIZE(tuner_init_qt1010); - init = tuner_init_qt1010; - break; - case AF9013_TUNER_MT2060_2: - len = ARRAY_SIZE(tuner_init_mt2060_2); - init = tuner_init_mt2060_2; - break; - case AF9013_TUNER_TDA18271: - case AF9013_TUNER_TDA18218: - len = ARRAY_SIZE(tuner_init_tda18271); - init = tuner_init_tda18271; - break; - case AF9013_TUNER_UNKNOWN: - default: - len = ARRAY_SIZE(tuner_init_unknown); - init = tuner_init_unknown; - break; - } - - for (i = 0; i < len; i++) { - ret = af9013_wr_reg_bits(state, init[i].addr, init[i].pos, - init[i].len, init[i].val); - if (ret) - goto err; - } - - /* TS mode */ - ret = af9013_wr_reg_bits(state, 0xd500, 1, 2, state->config.ts_mode); - if (ret) - goto err; - - /* enable lock led */ - ret = af9013_wr_reg_bits(state, 0xd730, 0, 1, 1); - if (ret) - goto err; - - /* check if we support signal strength */ - if (!state->signal_strength_en) { - ret = af9013_rd_reg_bits(state, 0x9bee, 0, 1, - &state->signal_strength_en); - if (ret) - goto err; - } - - /* read values needed for signal strength calculation */ - if (state->signal_strength_en && !state->rf_50) { - ret = af9013_rd_reg(state, 0x9bbd, &state->rf_50); - if (ret) - goto err; - - ret = af9013_rd_reg(state, 0x9bd0, &state->rf_80); - if (ret) - goto err; - - ret = af9013_rd_reg(state, 0x9be2, &state->if_50); - if (ret) - goto err; - - ret = af9013_rd_reg(state, 0x9be4, &state->if_80); - if (ret) - goto err; - } - - /* SNR */ - ret = af9013_wr_reg(state, 0xd2e2, 1); - if (ret) - goto err; - - /* BER / UCB */ - buf[0] = (10000 >> 0) & 0xff; - buf[1] = (10000 >> 8) & 0xff; - ret = af9013_wr_regs(state, 0xd385, buf, 2); - if (ret) - goto err; - - /* enable FEC monitor */ - ret = af9013_wr_reg_bits(state, 0xd392, 1, 1, 1); - if (ret) - goto err; - - state->first_tune = true; - schedule_delayed_work(&state->statistics_work, msecs_to_jiffies(400)); - - return ret; -err: - dbg("%s: failed=%d", __func__, ret); - return ret; -} - -static int af9013_sleep(struct dvb_frontend *fe) -{ - struct af9013_state *state = fe->demodulator_priv; - int ret; - - dbg("%s", __func__); - - /* stop statistics polling */ - cancel_delayed_work_sync(&state->statistics_work); - - /* disable lock led */ - ret = af9013_wr_reg_bits(state, 0xd730, 0, 1, 0); - if (ret) - goto err; - - /* power off */ - ret = af9013_power_ctrl(state, 0); - if (ret) - goto err; - - return ret; -err: - dbg("%s: failed=%d", __func__, ret); - return ret; -} - -static int af9013_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) -{ - int ret; - struct af9013_state *state = fe->demodulator_priv; - - dbg("%s: enable=%d", __func__, enable); - - /* gate already open or close */ - if (state->i2c_gate_state == enable) - return 0; - - if (state->config.ts_mode == AF9013_TS_USB) - ret = af9013_wr_reg_bits(state, 0xd417, 3, 1, enable); - else - ret = af9013_wr_reg_bits(state, 0xd607, 2, 1, enable); - if (ret) - goto err; - - state->i2c_gate_state = enable; - - return ret; -err: - dbg("%s: failed=%d", __func__, ret); - return ret; -} - -static void af9013_release(struct dvb_frontend *fe) -{ - struct af9013_state *state = fe->demodulator_priv; - kfree(state); -} - -static struct dvb_frontend_ops af9013_ops; - -static int af9013_download_firmware(struct af9013_state *state) -{ - int i, len, remaining, ret; - const struct firmware *fw; - u16 checksum = 0; - u8 val; - u8 fw_params[4]; - u8 *fw_file = AF9013_DEFAULT_FIRMWARE; - - msleep(100); - /* check whether firmware is already running */ - ret = af9013_rd_reg(state, 0x98be, &val); - if (ret) - goto err; - else - dbg("%s: firmware status=%02x", __func__, val); - - if (val == 0x0c) /* fw is running, no need for download */ - goto exit; - - info("found a '%s' in cold state, will try to load a firmware", - af9013_ops.info.name); - - /* request the firmware, this will block and timeout */ - ret = request_firmware(&fw, fw_file, state->i2c->dev.parent); - if (ret) { - err("did not find the firmware file. (%s) " - "Please see linux/Documentation/dvb/ for more details" \ - " on firmware-problems. (%d)", - fw_file, ret); - goto err; - } - - info("downloading firmware from file '%s'", fw_file); - - /* calc checksum */ - for (i = 0; i < fw->size; i++) - checksum += fw->data[i]; - - fw_params[0] = checksum >> 8; - fw_params[1] = checksum & 0xff; - fw_params[2] = fw->size >> 8; - fw_params[3] = fw->size & 0xff; - - /* write fw checksum & size */ - ret = af9013_write_ofsm_regs(state, 0x50fc, - fw_params, sizeof(fw_params)); - if (ret) - goto err_release; - - #define FW_ADDR 0x5100 /* firmware start address */ - #define LEN_MAX 16 /* max packet size */ - for (remaining = fw->size; remaining > 0; remaining -= LEN_MAX) { - len = remaining; - if (len > LEN_MAX) - len = LEN_MAX; - - ret = af9013_write_ofsm_regs(state, - FW_ADDR + fw->size - remaining, - (u8 *) &fw->data[fw->size - remaining], len); - if (ret) { - err("firmware download failed:%d", ret); - goto err_release; - } - } - - /* request boot firmware */ - ret = af9013_wr_reg(state, 0xe205, 1); - if (ret) - goto err_release; - - for (i = 0; i < 15; i++) { - msleep(100); - - /* check firmware status */ - ret = af9013_rd_reg(state, 0x98be, &val); - if (ret) - goto err_release; - - dbg("%s: firmware status=%02x", __func__, val); - - if (val == 0x0c || val == 0x04) /* success or fail */ - break; - } - - if (val == 0x04) { - err("firmware did not run"); - ret = -ENODEV; - } else if (val != 0x0c) { - err("firmware boot timeout"); - ret = -ENODEV; - } - -err_release: - release_firmware(fw); -err: -exit: - if (!ret) - info("found a '%s' in warm state.", af9013_ops.info.name); - return ret; -} - -struct dvb_frontend *af9013_attach(const struct af9013_config *config, - struct i2c_adapter *i2c) -{ - int ret; - struct af9013_state *state = NULL; - u8 buf[4], i; - - /* allocate memory for the internal state */ - state = kzalloc(sizeof(struct af9013_state), GFP_KERNEL); - if (state == NULL) - goto err; - - /* setup the state */ - state->i2c = i2c; - memcpy(&state->config, config, sizeof(struct af9013_config)); - - /* download firmware */ - if (state->config.ts_mode != AF9013_TS_USB) { - ret = af9013_download_firmware(state); - if (ret) - goto err; - } - - /* firmware version */ - ret = af9013_rd_regs(state, 0x5103, buf, 4); - if (ret) - goto err; - - info("firmware version %d.%d.%d.%d", buf[0], buf[1], buf[2], buf[3]); - - /* set GPIOs */ - for (i = 0; i < sizeof(state->config.gpio); i++) { - ret = af9013_set_gpio(state, i, state->config.gpio[i]); - if (ret) - goto err; - } - - /* create dvb_frontend */ - memcpy(&state->fe.ops, &af9013_ops, - sizeof(struct dvb_frontend_ops)); - state->fe.demodulator_priv = state; - - INIT_DELAYED_WORK(&state->statistics_work, af9013_statistics_work); - - return &state->fe; -err: - kfree(state); - return NULL; -} -EXPORT_SYMBOL(af9013_attach); - -static struct dvb_frontend_ops af9013_ops = { - .delsys = { SYS_DVBT }, - .info = { - .name = "Afatech AF9013", - .frequency_min = 174000000, - .frequency_max = 862000000, - .frequency_stepsize = 250000, - .frequency_tolerance = 0, - .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_FEC_AUTO | - FE_CAN_QPSK | - FE_CAN_QAM_16 | - FE_CAN_QAM_64 | - FE_CAN_QAM_AUTO | - FE_CAN_TRANSMISSION_MODE_AUTO | - FE_CAN_GUARD_INTERVAL_AUTO | - FE_CAN_HIERARCHY_AUTO | - FE_CAN_RECOVER | - FE_CAN_MUTE_TS - }, - - .release = af9013_release, - - .init = af9013_init, - .sleep = af9013_sleep, - - .get_tune_settings = af9013_get_tune_settings, - .set_frontend = af9013_set_frontend, - .get_frontend = af9013_get_frontend, - - .read_status = af9013_read_status, - .read_snr = af9013_read_snr, - .read_signal_strength = af9013_read_signal_strength, - .read_ber = af9013_read_ber, - .read_ucblocks = af9013_read_ucblocks, - - .i2c_gate_ctrl = af9013_i2c_gate_ctrl, -}; - -MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); -MODULE_DESCRIPTION("Afatech AF9013 DVB-T demodulator driver"); -MODULE_LICENSE("GPL"); |
