diff options
Diffstat (limited to 'drivers/media/dvb-frontends/dib7000m.c')
| -rw-r--r-- | drivers/media/dvb-frontends/dib7000m.c | 1474 |
1 files changed, 1474 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/dib7000m.c b/drivers/media/dvb-frontends/dib7000m.c new file mode 100644 index 0000000000..fdb22f32e3 --- /dev/null +++ b/drivers/media/dvb-frontends/dib7000m.c @@ -0,0 +1,1474 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Linux-DVB Driver for DiBcom's DiB7000M and + * first generation DiB7000P-demodulator-family. + * + * Copyright (C) 2005-7 DiBcom (http://www.dibcom.fr/) + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/i2c.h> +#include <linux/mutex.h> + +#include <media/dvb_frontend.h> + +#include "dib7000m.h" + +static int debug; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "turn on debugging (default: 0)"); + +#define dprintk(fmt, arg...) do { \ + if (debug) \ + printk(KERN_DEBUG pr_fmt("%s: " fmt), \ + __func__, ##arg); \ +} while (0) + +struct dib7000m_state { + struct dvb_frontend demod; + struct dib7000m_config cfg; + + u8 i2c_addr; + struct i2c_adapter *i2c_adap; + + struct dibx000_i2c_master i2c_master; + +/* offset is 1 in case of the 7000MC */ + u8 reg_offs; + + u16 wbd_ref; + + u8 current_band; + u32 current_bandwidth; + struct dibx000_agc_config *current_agc; + u32 timf; + u32 timf_default; + u32 internal_clk; + + u8 div_force_off : 1; + u8 div_state : 1; + u16 div_sync_wait; + + u16 revision; + + u8 agc_state; + + /* for the I2C transfer */ + struct i2c_msg msg[2]; + u8 i2c_write_buffer[4]; + u8 i2c_read_buffer[2]; + struct mutex i2c_buffer_lock; +}; + +enum dib7000m_power_mode { + DIB7000M_POWER_ALL = 0, + + DIB7000M_POWER_NO, + DIB7000M_POWER_INTERF_ANALOG_AGC, + DIB7000M_POWER_COR4_DINTLV_ICIRM_EQUAL_CFROD, + DIB7000M_POWER_COR4_CRY_ESRAM_MOUT_NUD, + DIB7000M_POWER_INTERFACE_ONLY, +}; + +static u16 dib7000m_read_word(struct dib7000m_state *state, u16 reg) +{ + u16 ret; + + if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) { + dprintk("could not acquire lock\n"); + return 0; + } + + state->i2c_write_buffer[0] = (reg >> 8) | 0x80; + state->i2c_write_buffer[1] = reg & 0xff; + + memset(state->msg, 0, 2 * sizeof(struct i2c_msg)); + state->msg[0].addr = state->i2c_addr >> 1; + state->msg[0].flags = 0; + state->msg[0].buf = state->i2c_write_buffer; + state->msg[0].len = 2; + state->msg[1].addr = state->i2c_addr >> 1; + state->msg[1].flags = I2C_M_RD; + state->msg[1].buf = state->i2c_read_buffer; + state->msg[1].len = 2; + + if (i2c_transfer(state->i2c_adap, state->msg, 2) != 2) + dprintk("i2c read error on %d\n", reg); + + ret = (state->i2c_read_buffer[0] << 8) | state->i2c_read_buffer[1]; + mutex_unlock(&state->i2c_buffer_lock); + + return ret; +} + +static int dib7000m_write_word(struct dib7000m_state *state, u16 reg, u16 val) +{ + int ret; + + if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) { + dprintk("could not acquire lock\n"); + return -EINVAL; + } + + state->i2c_write_buffer[0] = (reg >> 8) & 0xff; + state->i2c_write_buffer[1] = reg & 0xff; + state->i2c_write_buffer[2] = (val >> 8) & 0xff; + state->i2c_write_buffer[3] = val & 0xff; + + memset(&state->msg[0], 0, sizeof(struct i2c_msg)); + state->msg[0].addr = state->i2c_addr >> 1; + state->msg[0].flags = 0; + state->msg[0].buf = state->i2c_write_buffer; + state->msg[0].len = 4; + + ret = (i2c_transfer(state->i2c_adap, state->msg, 1) != 1 ? + -EREMOTEIO : 0); + mutex_unlock(&state->i2c_buffer_lock); + return ret; +} +static void dib7000m_write_tab(struct dib7000m_state *state, u16 *buf) +{ + u16 l = 0, r, *n; + n = buf; + l = *n++; + while (l) { + r = *n++; + + if (state->reg_offs && (r >= 112 && r <= 331)) // compensate for 7000MC + r++; + + do { + dib7000m_write_word(state, r, *n++); + r++; + } while (--l); + l = *n++; + } +} + +static int dib7000m_set_output_mode(struct dib7000m_state *state, int mode) +{ + int ret = 0; + u16 outreg, fifo_threshold, smo_mode, + sram = 0x0005; /* by default SRAM output is disabled */ + + outreg = 0; + fifo_threshold = 1792; + smo_mode = (dib7000m_read_word(state, 294 + state->reg_offs) & 0x0010) | (1 << 1); + + dprintk("setting output mode for demod %p to %d\n", &state->demod, mode); + + switch (mode) { + case OUTMODE_MPEG2_PAR_GATED_CLK: // STBs with parallel gated clock + outreg = (1 << 10); /* 0x0400 */ + break; + case OUTMODE_MPEG2_PAR_CONT_CLK: // STBs with parallel continues clock + outreg = (1 << 10) | (1 << 6); /* 0x0440 */ + break; + case OUTMODE_MPEG2_SERIAL: // STBs with serial input + outreg = (1 << 10) | (2 << 6) | (0 << 1); /* 0x0482 */ + break; + case OUTMODE_DIVERSITY: + if (state->cfg.hostbus_diversity) + outreg = (1 << 10) | (4 << 6); /* 0x0500 */ + else + sram |= 0x0c00; + break; + case OUTMODE_MPEG2_FIFO: // e.g. USB feeding + smo_mode |= (3 << 1); + fifo_threshold = 512; + outreg = (1 << 10) | (5 << 6); + break; + case OUTMODE_HIGH_Z: // disable + outreg = 0; + break; + default: + dprintk("Unhandled output_mode passed to be set for demod %p\n", &state->demod); + break; + } + + if (state->cfg.output_mpeg2_in_188_bytes) + smo_mode |= (1 << 5) ; + + ret |= dib7000m_write_word(state, 294 + state->reg_offs, smo_mode); + ret |= dib7000m_write_word(state, 295 + state->reg_offs, fifo_threshold); /* synchronous fread */ + ret |= dib7000m_write_word(state, 1795, outreg); + ret |= dib7000m_write_word(state, 1805, sram); + + if (state->revision == 0x4003) { + u16 clk_cfg1 = dib7000m_read_word(state, 909) & 0xfffd; + if (mode == OUTMODE_DIVERSITY) + clk_cfg1 |= (1 << 1); // P_O_CLK_en + dib7000m_write_word(state, 909, clk_cfg1); + } + return ret; +} + +static void dib7000m_set_power_mode(struct dib7000m_state *state, enum dib7000m_power_mode mode) +{ + /* by default everything is going to be powered off */ + u16 reg_903 = 0xffff, reg_904 = 0xffff, reg_905 = 0xffff, reg_906 = 0x3fff; + u8 offset = 0; + + /* now, depending on the requested mode, we power on */ + switch (mode) { + /* power up everything in the demod */ + case DIB7000M_POWER_ALL: + reg_903 = 0x0000; reg_904 = 0x0000; reg_905 = 0x0000; reg_906 = 0x0000; + break; + + /* just leave power on the control-interfaces: GPIO and (I2C or SDIO or SRAM) */ + case DIB7000M_POWER_INTERFACE_ONLY: /* TODO power up either SDIO or I2C or SRAM */ + reg_905 &= ~((1 << 7) | (1 << 6) | (1 << 5) | (1 << 2)); + break; + + case DIB7000M_POWER_INTERF_ANALOG_AGC: + reg_903 &= ~((1 << 15) | (1 << 14) | (1 << 11) | (1 << 10)); + reg_905 &= ~((1 << 7) | (1 << 6) | (1 << 5) | (1 << 4) | (1 << 2)); + reg_906 &= ~((1 << 0)); + break; + + case DIB7000M_POWER_COR4_DINTLV_ICIRM_EQUAL_CFROD: + reg_903 = 0x0000; reg_904 = 0x801f; reg_905 = 0x0000; reg_906 = 0x0000; + break; + + case DIB7000M_POWER_COR4_CRY_ESRAM_MOUT_NUD: + reg_903 = 0x0000; reg_904 = 0x8000; reg_905 = 0x010b; reg_906 = 0x0000; + break; + case DIB7000M_POWER_NO: + break; + } + + /* always power down unused parts */ + if (!state->cfg.mobile_mode) + reg_904 |= (1 << 7) | (1 << 6) | (1 << 4) | (1 << 2) | (1 << 1); + + /* P_sdio_select_clk = 0 on MC and after*/ + if (state->revision != 0x4000) + reg_906 <<= 1; + + if (state->revision == 0x4003) + offset = 1; + + dib7000m_write_word(state, 903 + offset, reg_903); + dib7000m_write_word(state, 904 + offset, reg_904); + dib7000m_write_word(state, 905 + offset, reg_905); + dib7000m_write_word(state, 906 + offset, reg_906); +} + +static int dib7000m_set_adc_state(struct dib7000m_state *state, enum dibx000_adc_states no) +{ + int ret = 0; + u16 reg_913 = dib7000m_read_word(state, 913), + reg_914 = dib7000m_read_word(state, 914); + + switch (no) { + case DIBX000_SLOW_ADC_ON: + reg_914 |= (1 << 1) | (1 << 0); + ret |= dib7000m_write_word(state, 914, reg_914); + reg_914 &= ~(1 << 1); + break; + + case DIBX000_SLOW_ADC_OFF: + reg_914 |= (1 << 1) | (1 << 0); + break; + + case DIBX000_ADC_ON: + if (state->revision == 0x4000) { // workaround for PA/MA + // power-up ADC + dib7000m_write_word(state, 913, 0); + dib7000m_write_word(state, 914, reg_914 & 0x3); + // power-down bandgag + dib7000m_write_word(state, 913, (1 << 15)); + dib7000m_write_word(state, 914, reg_914 & 0x3); + } + + reg_913 &= 0x0fff; + reg_914 &= 0x0003; + break; + + case DIBX000_ADC_OFF: // leave the VBG voltage on + reg_913 |= (1 << 14) | (1 << 13) | (1 << 12); + reg_914 |= (1 << 5) | (1 << 4) | (1 << 3) | (1 << 2); + break; + + case DIBX000_VBG_ENABLE: + reg_913 &= ~(1 << 15); + break; + + case DIBX000_VBG_DISABLE: + reg_913 |= (1 << 15); + break; + + default: + break; + } + +// dprintk("913: %x, 914: %x\n", reg_913, reg_914); + ret |= dib7000m_write_word(state, 913, reg_913); + ret |= dib7000m_write_word(state, 914, reg_914); + + return ret; +} + +static int dib7000m_set_bandwidth(struct dib7000m_state *state, u32 bw) +{ + u32 timf; + + if (!bw) + bw = 8000; + + // store the current bandwidth for later use + state->current_bandwidth = bw; + + if (state->timf == 0) { + dprintk("using default timf\n"); + timf = state->timf_default; + } else { + dprintk("using updated timf\n"); + timf = state->timf; + } + + timf = timf * (bw / 50) / 160; + + dib7000m_write_word(state, 23, (u16) ((timf >> 16) & 0xffff)); + dib7000m_write_word(state, 24, (u16) ((timf ) & 0xffff)); + + return 0; +} + +static int dib7000m_set_diversity_in(struct dvb_frontend *demod, int onoff) +{ + struct dib7000m_state *state = demod->demodulator_priv; + + if (state->div_force_off) { + dprintk("diversity combination deactivated - forced by COFDM parameters\n"); + onoff = 0; + } + state->div_state = (u8)onoff; + + if (onoff) { + dib7000m_write_word(state, 263 + state->reg_offs, 6); + dib7000m_write_word(state, 264 + state->reg_offs, 6); + dib7000m_write_word(state, 266 + state->reg_offs, (state->div_sync_wait << 4) | (1 << 2) | (2 << 0)); + } else { + dib7000m_write_word(state, 263 + state->reg_offs, 1); + dib7000m_write_word(state, 264 + state->reg_offs, 0); + dib7000m_write_word(state, 266 + state->reg_offs, 0); + } + + return 0; +} + +static int dib7000m_sad_calib(struct dib7000m_state *state) +{ + +/* internal */ +// dib7000m_write_word(state, 928, (3 << 14) | (1 << 12) | (524 << 0)); // sampling clock of the SAD is writing in set_bandwidth + dib7000m_write_word(state, 929, (0 << 1) | (0 << 0)); + dib7000m_write_word(state, 930, 776); // 0.625*3.3 / 4096 + + /* do the calibration */ + dib7000m_write_word(state, 929, (1 << 0)); + dib7000m_write_word(state, 929, (0 << 0)); + + msleep(1); + + return 0; +} + +static void dib7000m_reset_pll_common(struct dib7000m_state *state, const struct dibx000_bandwidth_config *bw) +{ + dib7000m_write_word(state, 18, (u16) (((bw->internal*1000) >> 16) & 0xffff)); + dib7000m_write_word(state, 19, (u16) ( (bw->internal*1000) & 0xffff)); + dib7000m_write_word(state, 21, (u16) ( (bw->ifreq >> 16) & 0xffff)); + dib7000m_write_word(state, 22, (u16) ( bw->ifreq & 0xffff)); + + dib7000m_write_word(state, 928, bw->sad_cfg); +} + +static void dib7000m_reset_pll(struct dib7000m_state *state) +{ + const struct dibx000_bandwidth_config *bw = state->cfg.bw; + u16 reg_907,reg_910; + + /* default */ + reg_907 = (bw->pll_bypass << 15) | (bw->modulo << 7) | + (bw->ADClkSrc << 6) | (bw->IO_CLK_en_core << 5) | (bw->bypclk_div << 2) | + (bw->enable_refdiv << 1) | (0 << 0); + reg_910 = (((bw->pll_ratio >> 6) & 0x3) << 3) | (bw->pll_range << 1) | bw->pll_reset; + + // for this oscillator frequency should be 30 MHz for the Master (default values in the board_parameters give that value) + // this is only working only for 30 MHz crystals + if (!state->cfg.quartz_direct) { + reg_910 |= (1 << 5); // forcing the predivider to 1 + + // if the previous front-end is baseband, its output frequency is 15 MHz (prev freq divided by 2) + if(state->cfg.input_clk_is_div_2) + reg_907 |= (16 << 9); + else // otherwise the previous front-end puts out its input (default 30MHz) - no extra division necessary + reg_907 |= (8 << 9); + } else { + reg_907 |= (bw->pll_ratio & 0x3f) << 9; + reg_910 |= (bw->pll_prediv << 5); + } + + dib7000m_write_word(state, 910, reg_910); // pll cfg + dib7000m_write_word(state, 907, reg_907); // clk cfg0 + dib7000m_write_word(state, 908, 0x0006); // clk_cfg1 + + dib7000m_reset_pll_common(state, bw); +} + +static void dib7000mc_reset_pll(struct dib7000m_state *state) +{ + const struct dibx000_bandwidth_config *bw = state->cfg.bw; + u16 clk_cfg1; + + // clk_cfg0 + dib7000m_write_word(state, 907, (bw->pll_prediv << 8) | (bw->pll_ratio << 0)); + + // clk_cfg1 + //dib7000m_write_word(state, 908, (1 << 14) | (3 << 12) |(0 << 11) | + clk_cfg1 = (0 << 14) | (3 << 12) |(0 << 11) | + (bw->IO_CLK_en_core << 10) | (bw->bypclk_div << 5) | (bw->enable_refdiv << 4) | + (1 << 3) | (bw->pll_range << 1) | (bw->pll_reset << 0); + dib7000m_write_word(state, 908, clk_cfg1); + clk_cfg1 = (clk_cfg1 & 0xfff7) | (bw->pll_bypass << 3); + dib7000m_write_word(state, 908, clk_cfg1); + + // smpl_cfg + dib7000m_write_word(state, 910, (1 << 12) | (2 << 10) | (bw->modulo << 8) | (bw->ADClkSrc << 7)); + + dib7000m_reset_pll_common(state, bw); +} + +static int dib7000m_reset_gpio(struct dib7000m_state *st) +{ + /* reset the GPIOs */ + dib7000m_write_word(st, 773, st->cfg.gpio_dir); + dib7000m_write_word(st, 774, st->cfg.gpio_val); + + /* TODO 782 is P_gpio_od */ + + dib7000m_write_word(st, 775, st->cfg.gpio_pwm_pos); + + dib7000m_write_word(st, 780, st->cfg.pwm_freq_div); + return 0; +} + +static u16 dib7000m_defaults_common[] = + +{ + // auto search configuration + 3, 2, + 0x0004, + 0x1000, + 0x0814, + + 12, 6, + 0x001b, + 0x7740, + 0x005b, + 0x8d80, + 0x01c9, + 0xc380, + 0x0000, + 0x0080, + 0x0000, + 0x0090, + 0x0001, + 0xd4c0, + + 1, 26, + 0x6680, // P_corm_thres Lock algorithms configuration + + 1, 170, + 0x0410, // P_palf_alpha_regul, P_palf_filter_freeze, P_palf_filter_on + + 8, 173, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + + 1, 182, + 8192, // P_fft_nb_to_cut + + 2, 195, + 0x0ccd, // P_pha3_thres + 0, // P_cti_use_cpe, P_cti_use_prog + + 1, 205, + 0x200f, // P_cspu_regul, P_cspu_win_cut + + 5, 214, + 0x023d, // P_adp_regul_cnt + 0x00a4, // P_adp_noise_cnt + 0x00a4, // P_adp_regul_ext + 0x7ff0, // P_adp_noise_ext + 0x3ccc, // P_adp_fil + + 1, 226, + 0, // P_2d_byp_ti_num + + 1, 255, + 0x800, // P_equal_thres_wgn + + 1, 263, + 0x0001, + + 1, 281, + 0x0010, // P_fec_* + + 1, 294, + 0x0062, // P_smo_mode, P_smo_rs_discard, P_smo_fifo_flush, P_smo_pid_parse, P_smo_error_discard + + 0 +}; + +static u16 dib7000m_defaults[] = + +{ + /* set ADC level to -16 */ + 11, 76, + (1 << 13) - 825 - 117, + (1 << 13) - 837 - 117, + (1 << 13) - 811 - 117, + (1 << 13) - 766 - 117, + (1 << 13) - 737 - 117, + (1 << 13) - 693 - 117, + (1 << 13) - 648 - 117, + (1 << 13) - 619 - 117, + (1 << 13) - 575 - 117, + (1 << 13) - 531 - 117, + (1 << 13) - 501 - 117, + + // Tuner IO bank: max drive (14mA) + 1, 912, + 0x2c8a, + + 1, 1817, + 1, + + 0, +}; + +static int dib7000m_demod_reset(struct dib7000m_state *state) +{ + dib7000m_set_power_mode(state, DIB7000M_POWER_ALL); + + /* always leave the VBG voltage on - it consumes almost nothing but takes a long time to start */ + dib7000m_set_adc_state(state, DIBX000_VBG_ENABLE); + + /* restart all parts */ + dib7000m_write_word(state, 898, 0xffff); + dib7000m_write_word(state, 899, 0xffff); + dib7000m_write_word(state, 900, 0xff0f); + dib7000m_write_word(state, 901, 0xfffc); + + dib7000m_write_word(state, 898, 0); + dib7000m_write_word(state, 899, 0); + dib7000m_write_word(state, 900, 0); + dib7000m_write_word(state, 901, 0); + + if (state->revision == 0x4000) + dib7000m_reset_pll(state); + else + dib7000mc_reset_pll(state); + + if (dib7000m_reset_gpio(state) != 0) + dprintk("GPIO reset was not successful.\n"); + + if (dib7000m_set_output_mode(state, OUTMODE_HIGH_Z) != 0) + dprintk("OUTPUT_MODE could not be reset.\n"); + + /* unforce divstr regardless whether i2c enumeration was done or not */ + dib7000m_write_word(state, 1794, dib7000m_read_word(state, 1794) & ~(1 << 1) ); + + dib7000m_set_bandwidth(state, 8000); + + dib7000m_set_adc_state(state, DIBX000_SLOW_ADC_ON); + dib7000m_sad_calib(state); + dib7000m_set_adc_state(state, DIBX000_SLOW_ADC_OFF); + + if (state->cfg.dvbt_mode) + dib7000m_write_word(state, 1796, 0x0); // select DVB-T output + + if (state->cfg.mobile_mode) + dib7000m_write_word(state, 261 + state->reg_offs, 2); + else + dib7000m_write_word(state, 224 + state->reg_offs, 1); + + // P_iqc_alpha_pha, P_iqc_alpha_amp, P_iqc_dcc_alpha, ... + if(state->cfg.tuner_is_baseband) + dib7000m_write_word(state, 36, 0x0755); + else + dib7000m_write_word(state, 36, 0x1f55); + + // P_divclksel=3 P_divbitsel=1 + if (state->revision == 0x4000) + dib7000m_write_word(state, 909, (3 << 10) | (1 << 6)); + else + dib7000m_write_word(state, 909, (3 << 4) | 1); + + dib7000m_write_tab(state, dib7000m_defaults_common); + dib7000m_write_tab(state, dib7000m_defaults); + + dib7000m_set_power_mode(state, DIB7000M_POWER_INTERFACE_ONLY); + + state->internal_clk = state->cfg.bw->internal; + + return 0; +} + +static void dib7000m_restart_agc(struct dib7000m_state *state) +{ + // P_restart_iqc & P_restart_agc + dib7000m_write_word(state, 898, 0x0c00); + dib7000m_write_word(state, 898, 0x0000); +} + +static int dib7000m_agc_soft_split(struct dib7000m_state *state) +{ + u16 agc,split_offset; + + if(!state->current_agc || !state->current_agc->perform_agc_softsplit || state->current_agc->split.max == 0) + return 0; + + // n_agc_global + agc = dib7000m_read_word(state, 390); + + if (agc > state->current_agc->split.min_thres) + split_offset = state->current_agc->split.min; + else if (agc < state->current_agc->split.max_thres) + split_offset = state->current_agc->split.max; + else + split_offset = state->current_agc->split.max * + (agc - state->current_agc->split.min_thres) / + (state->current_agc->split.max_thres - state->current_agc->split.min_thres); + + dprintk("AGC split_offset: %d\n", split_offset); + + // P_agc_force_split and P_agc_split_offset + return dib7000m_write_word(state, 103, (dib7000m_read_word(state, 103) & 0xff00) | split_offset); +} + +static int dib7000m_update_lna(struct dib7000m_state *state) +{ + u16 dyn_gain; + + if (state->cfg.update_lna) { + // read dyn_gain here (because it is demod-dependent and not fe) + dyn_gain = dib7000m_read_word(state, 390); + + if (state->cfg.update_lna(&state->demod,dyn_gain)) { // LNA has changed + dib7000m_restart_agc(state); + return 1; + } + } + return 0; +} + +static int dib7000m_set_agc_config(struct dib7000m_state *state, u8 band) +{ + struct dibx000_agc_config *agc = NULL; + int i; + if (state->current_band == band && state->current_agc != NULL) + return 0; + state->current_band = band; + + for (i = 0; i < state->cfg.agc_config_count; i++) + if (state->cfg.agc[i].band_caps & band) { + agc = &state->cfg.agc[i]; + break; + } + + if (agc == NULL) { + dprintk("no valid AGC configuration found for band 0x%02x\n", band); + return -EINVAL; + } + + state->current_agc = agc; + + /* AGC */ + dib7000m_write_word(state, 72 , agc->setup); + dib7000m_write_word(state, 73 , agc->inv_gain); + dib7000m_write_word(state, 74 , agc->time_stabiliz); + dib7000m_write_word(state, 97 , (agc->alpha_level << 12) | agc->thlock); + + // Demod AGC loop configuration + dib7000m_write_word(state, 98, (agc->alpha_mant << 5) | agc->alpha_exp); + dib7000m_write_word(state, 99, (agc->beta_mant << 6) | agc->beta_exp); + + dprintk("WBD: ref: %d, sel: %d, active: %d, alpha: %d\n", + state->wbd_ref != 0 ? state->wbd_ref : agc->wbd_ref, agc->wbd_sel, !agc->perform_agc_softsplit, agc->wbd_sel); + + /* AGC continued */ + if (state->wbd_ref != 0) + dib7000m_write_word(state, 102, state->wbd_ref); + else // use default + dib7000m_write_word(state, 102, agc->wbd_ref); + + dib7000m_write_word(state, 103, (agc->wbd_alpha << 9) | (agc->perform_agc_softsplit << 8) ); + dib7000m_write_word(state, 104, agc->agc1_max); + dib7000m_write_word(state, 105, agc->agc1_min); + dib7000m_write_word(state, 106, agc->agc2_max); + dib7000m_write_word(state, 107, agc->agc2_min); + dib7000m_write_word(state, 108, (agc->agc1_pt1 << 8) | agc->agc1_pt2 ); + dib7000m_write_word(state, 109, (agc->agc1_slope1 << 8) | agc->agc1_slope2); + dib7000m_write_word(state, 110, (agc->agc2_pt1 << 8) | agc->agc2_pt2); + dib7000m_write_word(state, 111, (agc->agc2_slope1 << 8) | agc->agc2_slope2); + + if (state->revision > 0x4000) { // settings for the MC + dib7000m_write_word(state, 71, agc->agc1_pt3); +// dprintk("929: %x %d %d\n", +// (dib7000m_read_word(state, 929) & 0xffe3) | (agc->wbd_inv << 4) | (agc->wbd_sel << 2), agc->wbd_inv, agc->wbd_sel); + dib7000m_write_word(state, 929, (dib7000m_read_word(state, 929) & 0xffe3) | (agc->wbd_inv << 4) | (agc->wbd_sel << 2)); + } else { + // wrong default values + u16 b[9] = { 676, 696, 717, 737, 758, 778, 799, 819, 840 }; + for (i = 0; i < 9; i++) + dib7000m_write_word(state, 88 + i, b[i]); + } + return 0; +} + +static void dib7000m_update_timf(struct dib7000m_state *state) +{ + u32 timf = (dib7000m_read_word(state, 436) << 16) | dib7000m_read_word(state, 437); + state->timf = timf * 160 / (state->current_bandwidth / 50); + dib7000m_write_word(state, 23, (u16) (timf >> 16)); + dib7000m_write_word(state, 24, (u16) (timf & 0xffff)); + dprintk("updated timf_frequency: %d (default: %d)\n", state->timf, state->timf_default); +} + +static int dib7000m_agc_startup(struct dvb_frontend *demod) +{ + struct dtv_frontend_properties *ch = &demod->dtv_property_cache; + struct dib7000m_state *state = demod->demodulator_priv; + u16 cfg_72 = dib7000m_read_word(state, 72); + int ret = -1; + u8 *agc_state = &state->agc_state; + u8 agc_split; + + switch (state->agc_state) { + case 0: + // set power-up level: interf+analog+AGC + dib7000m_set_power_mode(state, DIB7000M_POWER_INTERF_ANALOG_AGC); + dib7000m_set_adc_state(state, DIBX000_ADC_ON); + + if (dib7000m_set_agc_config(state, BAND_OF_FREQUENCY(ch->frequency/1000)) != 0) + return -1; + + ret = 7; /* ADC power up */ + (*agc_state)++; + break; + + case 1: + /* AGC initialization */ + if (state->cfg.agc_control) + state->cfg.agc_control(&state->demod, 1); + + dib7000m_write_word(state, 75, 32768); + if (!state->current_agc->perform_agc_softsplit) { + /* we are using the wbd - so slow AGC startup */ + dib7000m_write_word(state, 103, 1 << 8); /* force 0 split on WBD and restart AGC */ + (*agc_state)++; + ret = 5; + } else { + /* default AGC startup */ + (*agc_state) = 4; + /* wait AGC rough lock time */ + ret = 7; + } + + dib7000m_restart_agc(state); + break; + + case 2: /* fast split search path after 5sec */ + dib7000m_write_word(state, 72, cfg_72 | (1 << 4)); /* freeze AGC loop */ + dib7000m_write_word(state, 103, 2 << 9); /* fast split search 0.25kHz */ + (*agc_state)++; + ret = 14; + break; + + case 3: /* split search ended */ + agc_split = (u8)dib7000m_read_word(state, 392); /* store the split value for the next time */ + dib7000m_write_word(state, 75, dib7000m_read_word(state, 390)); /* set AGC gain start value */ + + dib7000m_write_word(state, 72, cfg_72 & ~(1 << 4)); /* std AGC loop */ + dib7000m_write_word(state, 103, (state->current_agc->wbd_alpha << 9) | agc_split); /* standard split search */ + + dib7000m_restart_agc(state); + + dprintk("SPLIT %p: %u\n", demod, agc_split); + + (*agc_state)++; + ret = 5; + break; + + case 4: /* LNA startup */ + /* wait AGC accurate lock time */ + ret = 7; + + if (dib7000m_update_lna(state)) + // wait only AGC rough lock time + ret = 5; + else + (*agc_state)++; + break; + + case 5: + dib7000m_agc_soft_split(state); + + if (state->cfg.agc_control) + state->cfg.agc_control(&state->demod, 0); + + (*agc_state)++; + break; + + default: + break; + } + return ret; +} + +static void dib7000m_set_channel(struct dib7000m_state *state, struct dtv_frontend_properties *ch, + u8 seq) +{ + u16 value, est[4]; + + dib7000m_set_bandwidth(state, BANDWIDTH_TO_KHZ(ch->bandwidth_hz)); + + /* nfft, guard, qam, alpha */ + value = 0; + switch (ch->transmission_mode) { + case TRANSMISSION_MODE_2K: value |= (0 << 7); break; + case TRANSMISSION_MODE_4K: value |= (2 << 7); break; + default: + case TRANSMISSION_MODE_8K: value |= (1 << 7); break; + } + switch (ch->guard_interval) { + case GUARD_INTERVAL_1_32: value |= (0 << 5); break; + case GUARD_INTERVAL_1_16: value |= (1 << 5); break; + case GUARD_INTERVAL_1_4: value |= (3 << 5); break; + default: + case GUARD_INTERVAL_1_8: value |= (2 << 5); break; + } + switch (ch->modulation) { + case QPSK: value |= (0 << 3); break; + case QAM_16: value |= (1 << 3); break; + default: + case QAM_64: value |= (2 << 3); break; + } + switch (HIERARCHY_1) { + case HIERARCHY_2: value |= 2; break; + case HIERARCHY_4: value |= 4; break; + default: + case HIERARCHY_1: value |= 1; break; + } + dib7000m_write_word(state, 0, value); + dib7000m_write_word(state, 5, (seq << 4)); + + /* P_dintl_native, P_dintlv_inv, P_hrch, P_code_rate, P_select_hp */ + value = 0; + if (1 != 0) + value |= (1 << 6); + if (ch->hierarchy == 1) + value |= (1 << 4); + if (1 == 1) + value |= 1; + switch ((ch->hierarchy == 0 || 1 == 1) ? ch->code_rate_HP : ch->code_rate_LP) { + case FEC_2_3: value |= (2 << 1); break; + case FEC_3_4: value |= (3 << 1); break; + case FEC_5_6: value |= (5 << 1); break; + case FEC_7_8: value |= (7 << 1); break; + default: + case FEC_1_2: value |= (1 << 1); break; + } + dib7000m_write_word(state, 267 + state->reg_offs, value); + + /* offset loop parameters */ + + /* P_timf_alpha = 6, P_corm_alpha=6, P_corm_thres=0x80 */ + dib7000m_write_word(state, 26, (6 << 12) | (6 << 8) | 0x80); + + /* P_ctrl_inh_cor=0, P_ctrl_alpha_cor=4, P_ctrl_inh_isi=1, P_ctrl_alpha_isi=3, P_ctrl_inh_cor4=1, P_ctrl_alpha_cor4=3 */ + dib7000m_write_word(state, 29, (0 << 14) | (4 << 10) | (1 << 9) | (3 << 5) | (1 << 4) | (0x3)); + + /* P_ctrl_freeze_pha_shift=0, P_ctrl_pha_off_max=3 */ + dib7000m_write_word(state, 32, (0 << 4) | 0x3); + + /* P_ctrl_sfreq_inh=0, P_ctrl_sfreq_step=5 */ + dib7000m_write_word(state, 33, (0 << 4) | 0x5); + + /* P_dvsy_sync_wait */ + switch (ch->transmission_mode) { + case TRANSMISSION_MODE_8K: value = 256; break; + case TRANSMISSION_MODE_4K: value = 128; break; + case TRANSMISSION_MODE_2K: + default: value = 64; break; + } + switch (ch->guard_interval) { + case GUARD_INTERVAL_1_16: value *= 2; break; + case GUARD_INTERVAL_1_8: value *= 4; break; + case GUARD_INTERVAL_1_4: value *= 8; break; + default: + case GUARD_INTERVAL_1_32: value *= 1; break; + } + state->div_sync_wait = (value * 3) / 2 + 32; // add 50% SFN margin + compensate for one DVSY-fifo TODO + + /* deactivate the possibility of diversity reception if extended interleave - not for 7000MC */ + /* P_dvsy_sync_mode = 0, P_dvsy_sync_enable=1, P_dvcb_comb_mode=2 */ + if (1 == 1 || state->revision > 0x4000) + state->div_force_off = 0; + else + state->div_force_off = 1; + dib7000m_set_diversity_in(&state->demod, state->div_state); + + /* channel estimation fine configuration */ + switch (ch->modulation) { + case QAM_64: + est[0] = 0x0148; /* P_adp_regul_cnt 0.04 */ + est[1] = 0xfff0; /* P_adp_noise_cnt -0.002 */ + est[2] = 0x00a4; /* P_adp_regul_ext 0.02 */ + est[3] = 0xfff8; /* P_adp_noise_ext -0.001 */ + break; + case QAM_16: + est[0] = 0x023d; /* P_adp_regul_cnt 0.07 */ + est[1] = 0xffdf; /* P_adp_noise_cnt -0.004 */ + est[2] = 0x00a4; /* P_adp_regul_ext 0.02 */ + est[3] = 0xfff0; /* P_adp_noise_ext -0.002 */ + break; + default: + est[0] = 0x099a; /* P_adp_regul_cnt 0.3 */ + est[1] = 0xffae; /* P_adp_noise_cnt -0.01 */ + est[2] = 0x0333; /* P_adp_regul_ext 0.1 */ + est[3] = 0xfff8; /* P_adp_noise_ext -0.002 */ + break; + } + for (value = 0; value < 4; value++) + dib7000m_write_word(state, 214 + value + state->reg_offs, est[value]); + + // set power-up level: autosearch + dib7000m_set_power_mode(state, DIB7000M_POWER_COR4_DINTLV_ICIRM_EQUAL_CFROD); +} + +static int dib7000m_autosearch_start(struct dvb_frontend *demod) +{ + struct dtv_frontend_properties *ch = &demod->dtv_property_cache; + struct dib7000m_state *state = demod->demodulator_priv; + struct dtv_frontend_properties schan; + int ret = 0; + u32 value, factor; + + schan = *ch; + + schan.modulation = QAM_64; + schan.guard_interval = GUARD_INTERVAL_1_32; + schan.transmission_mode = TRANSMISSION_MODE_8K; + schan.code_rate_HP = FEC_2_3; + schan.code_rate_LP = FEC_3_4; + schan.hierarchy = 0; + + dib7000m_set_channel(state, &schan, 7); + + factor = BANDWIDTH_TO_KHZ(schan.bandwidth_hz); + if (factor >= 5000) + factor = 1; + else + factor = 6; + + // always use the setting for 8MHz here lock_time for 7,6 MHz are longer + value = 30 * state->internal_clk * factor; + ret |= dib7000m_write_word(state, 6, (u16) ((value >> 16) & 0xffff)); // lock0 wait time + ret |= dib7000m_write_word(state, 7, (u16) (value & 0xffff)); // lock0 wait time + value = 100 * state->internal_clk * factor; + ret |= dib7000m_write_word(state, 8, (u16) ((value >> 16) & 0xffff)); // lock1 wait time + ret |= dib7000m_write_word(state, 9, (u16) (value & 0xffff)); // lock1 wait time + value = 500 * state->internal_clk * factor; + ret |= dib7000m_write_word(state, 10, (u16) ((value >> 16) & 0xffff)); // lock2 wait time + ret |= dib7000m_write_word(state, 11, (u16) (value & 0xffff)); // lock2 wait time + + // start search + value = dib7000m_read_word(state, 0); + ret |= dib7000m_write_word(state, 0, (u16) (value | (1 << 9))); + + /* clear n_irq_pending */ + if (state->revision == 0x4000) + dib7000m_write_word(state, 1793, 0); + else + dib7000m_read_word(state, 537); + + ret |= dib7000m_write_word(state, 0, (u16) value); + + return ret; +} + +static int dib7000m_autosearch_irq(struct dib7000m_state *state, u16 reg) +{ + u16 irq_pending = dib7000m_read_word(state, reg); + + if (irq_pending & 0x1) { // failed + dprintk("autosearch failed\n"); + return 1; + } + + if (irq_pending & 0x2) { // succeeded + dprintk("autosearch succeeded\n"); + return 2; + } + return 0; // still pending +} + +static int dib7000m_autosearch_is_irq(struct dvb_frontend *demod) +{ + struct dib7000m_state *state = demod->demodulator_priv; + if (state->revision == 0x4000) + return dib7000m_autosearch_irq(state, 1793); + else + return dib7000m_autosearch_irq(state, 537); +} + +static int dib7000m_tune(struct dvb_frontend *demod) +{ + struct dtv_frontend_properties *ch = &demod->dtv_property_cache; + struct dib7000m_state *state = demod->demodulator_priv; + int ret = 0; + u16 value; + + // we are already tuned - just resuming from suspend + dib7000m_set_channel(state, ch, 0); + + // restart demod + ret |= dib7000m_write_word(state, 898, 0x4000); + ret |= dib7000m_write_word(state, 898, 0x0000); + msleep(45); + + dib7000m_set_power_mode(state, DIB7000M_POWER_COR4_CRY_ESRAM_MOUT_NUD); + /* P_ctrl_inh_cor=0, P_ctrl_alpha_cor=4, P_ctrl_inh_isi=0, P_ctrl_alpha_isi=3, P_ctrl_inh_cor4=1, P_ctrl_alpha_cor4=3 */ + ret |= dib7000m_write_word(state, 29, (0 << 14) | (4 << 10) | (0 << 9) | (3 << 5) | (1 << 4) | (0x3)); + + // never achieved a lock before - wait for timfreq to update + if (state->timf == 0) + msleep(200); + + //dump_reg(state); + /* P_timf_alpha, P_corm_alpha=6, P_corm_thres=0x80 */ + value = (6 << 8) | 0x80; + switch (ch->transmission_mode) { + case TRANSMISSION_MODE_2K: value |= (7 << 12); break; + case TRANSMISSION_MODE_4K: value |= (8 << 12); break; + default: + case TRANSMISSION_MODE_8K: value |= (9 << 12); break; + } + ret |= dib7000m_write_word(state, 26, value); + + /* P_ctrl_freeze_pha_shift=0, P_ctrl_pha_off_max */ + value = (0 << 4); + switch (ch->transmission_mode) { + case TRANSMISSION_MODE_2K: value |= 0x6; break; + case TRANSMISSION_MODE_4K: value |= 0x7; break; + default: + case TRANSMISSION_MODE_8K: value |= 0x8; break; + } + ret |= dib7000m_write_word(state, 32, value); + + /* P_ctrl_sfreq_inh=0, P_ctrl_sfreq_step */ + value = (0 << 4); + switch (ch->transmission_mode) { + case TRANSMISSION_MODE_2K: value |= 0x6; break; + case TRANSMISSION_MODE_4K: value |= 0x7; break; + default: + case TRANSMISSION_MODE_8K: value |= 0x8; break; + } + ret |= dib7000m_write_word(state, 33, value); + + // we achieved a lock - it's time to update the timf freq + if ((dib7000m_read_word(state, 535) >> 6) & 0x1) + dib7000m_update_timf(state); + + dib7000m_set_bandwidth(state, BANDWIDTH_TO_KHZ(ch->bandwidth_hz)); + return ret; +} + +static int dib7000m_wakeup(struct dvb_frontend *demod) +{ + struct dib7000m_state *state = demod->demodulator_priv; + + dib7000m_set_power_mode(state, DIB7000M_POWER_ALL); + + if (dib7000m_set_adc_state(state, DIBX000_SLOW_ADC_ON) != 0) + dprintk("could not start Slow ADC\n"); + + return 0; +} + +static int dib7000m_sleep(struct dvb_frontend *demod) +{ + struct dib7000m_state *st = demod->demodulator_priv; + dib7000m_set_output_mode(st, OUTMODE_HIGH_Z); + dib7000m_set_power_mode(st, DIB7000M_POWER_INTERFACE_ONLY); + return dib7000m_set_adc_state(st, DIBX000_SLOW_ADC_OFF) | + dib7000m_set_adc_state(st, DIBX000_ADC_OFF); +} + +static int dib7000m_identify(struct dib7000m_state *state) +{ + u16 value; + + if ((value = dib7000m_read_word(state, 896)) != 0x01b3) { + dprintk("wrong Vendor ID (0x%x)\n", value); + return -EREMOTEIO; + } + + state->revision = dib7000m_read_word(state, 897); + if (state->revision != 0x4000 && + state->revision != 0x4001 && + state->revision != 0x4002 && + state->revision != 0x4003) { + dprintk("wrong Device ID (0x%x)\n", value); + return -EREMOTEIO; + } + + /* protect this driver to be used with 7000PC */ + if (state->revision == 0x4000 && dib7000m_read_word(state, 769) == 0x4000) { + dprintk("this driver does not work with DiB7000PC\n"); + return -EREMOTEIO; + } + + switch (state->revision) { + case 0x4000: dprintk("found DiB7000MA/PA/MB/PB\n"); break; + case 0x4001: state->reg_offs = 1; dprintk("found DiB7000HC\n"); break; + case 0x4002: state->reg_offs = 1; dprintk("found DiB7000MC\n"); break; + case 0x4003: state->reg_offs = 1; dprintk("found DiB9000\n"); break; + } + + return 0; +} + + +static int dib7000m_get_frontend(struct dvb_frontend* fe, + struct dtv_frontend_properties *fep) +{ + struct dib7000m_state *state = fe->demodulator_priv; + u16 tps = dib7000m_read_word(state,480); + + fep->inversion = INVERSION_AUTO; + + fep->bandwidth_hz = BANDWIDTH_TO_HZ(state->current_bandwidth); + + switch ((tps >> 8) & 0x3) { + case 0: fep->transmission_mode = TRANSMISSION_MODE_2K; break; + case 1: fep->transmission_mode = TRANSMISSION_MODE_8K; break; + /* case 2: fep->transmission_mode = TRANSMISSION_MODE_4K; break; */ + } + + switch (tps & 0x3) { + case 0: fep->guard_interval = GUARD_INTERVAL_1_32; break; + case 1: fep->guard_interval = GUARD_INTERVAL_1_16; break; + case 2: fep->guard_interval = GUARD_INTERVAL_1_8; break; + case 3: fep->guard_interval = GUARD_INTERVAL_1_4; break; + } + + switch ((tps >> 14) & 0x3) { + case 0: fep->modulation = QPSK; break; + case 1: fep->modulation = QAM_16; break; + case 2: + default: fep->modulation = QAM_64; break; + } + + /* as long as the frontend_param structure is fixed for hierarchical transmission I refuse to use it */ + /* (tps >> 13) & 0x1 == hrch is used, (tps >> 10) & 0x7 == alpha */ + + fep->hierarchy = HIERARCHY_NONE; + switch ((tps >> 5) & 0x7) { + case 1: fep->code_rate_HP = FEC_1_2; break; + case 2: fep->code_rate_HP = FEC_2_3; break; + case 3: fep->code_rate_HP = FEC_3_4; break; + case 5: fep->code_rate_HP = FEC_5_6; break; + case 7: + default: fep->code_rate_HP = FEC_7_8; break; + + } + + switch ((tps >> 2) & 0x7) { + case 1: fep->code_rate_LP = FEC_1_2; break; + case 2: fep->code_rate_LP = FEC_2_3; break; + case 3: fep->code_rate_LP = FEC_3_4; break; + case 5: fep->code_rate_LP = FEC_5_6; break; + case 7: + default: fep->code_rate_LP = FEC_7_8; break; + } + + /* native interleaver: (dib7000m_read_word(state, 481) >> 5) & 0x1 */ + + return 0; +} + +static int dib7000m_set_frontend(struct dvb_frontend *fe) +{ + struct dtv_frontend_properties *fep = &fe->dtv_property_cache; + struct dib7000m_state *state = fe->demodulator_priv; + int time, ret; + + dib7000m_set_output_mode(state, OUTMODE_HIGH_Z); + + dib7000m_set_bandwidth(state, BANDWIDTH_TO_KHZ(fep->bandwidth_hz)); + + if (fe->ops.tuner_ops.set_params) + fe->ops.tuner_ops.set_params(fe); + + /* start up the AGC */ + state->agc_state = 0; + do { + time = dib7000m_agc_startup(fe); + if (time != -1) + msleep(time); + } while (time != -1); + + if (fep->transmission_mode == TRANSMISSION_MODE_AUTO || + fep->guard_interval == GUARD_INTERVAL_AUTO || + fep->modulation == QAM_AUTO || + fep->code_rate_HP == FEC_AUTO) { + int i = 800, found; + + dib7000m_autosearch_start(fe); + do { + msleep(1); + found = dib7000m_autosearch_is_irq(fe); + } while (found == 0 && i--); + + dprintk("autosearch returns: %d\n", found); + if (found == 0 || found == 1) + return 0; // no channel found + + dib7000m_get_frontend(fe, fep); + } + + ret = dib7000m_tune(fe); + + /* make this a config parameter */ + dib7000m_set_output_mode(state, OUTMODE_MPEG2_FIFO); + return ret; +} + +static int dib7000m_read_status(struct dvb_frontend *fe, enum fe_status *stat) +{ + struct dib7000m_state *state = fe->demodulator_priv; + u16 lock = dib7000m_read_word(state, 535); + + *stat = 0; + + if (lock & 0x8000) + *stat |= FE_HAS_SIGNAL; + if (lock & 0x3000) + *stat |= FE_HAS_CARRIER; + if (lock & 0x0100) + *stat |= FE_HAS_VITERBI; + if (lock & 0x0010) + *stat |= FE_HAS_SYNC; + if (lock & 0x0008) + *stat |= FE_HAS_LOCK; + + return 0; +} + +static int dib7000m_read_ber(struct dvb_frontend *fe, u32 *ber) +{ + struct dib7000m_state *state = fe->demodulator_priv; + *ber = (dib7000m_read_word(state, 526) << 16) | dib7000m_read_word(state, 527); + return 0; +} + +static int dib7000m_read_unc_blocks(struct dvb_frontend *fe, u32 *unc) +{ + struct dib7000m_state *state = fe->demodulator_priv; + *unc = dib7000m_read_word(state, 534); + return 0; +} + +static int dib7000m_read_signal_strength(struct dvb_frontend *fe, u16 *strength) +{ + struct dib7000m_state *state = fe->demodulator_priv; + u16 val = dib7000m_read_word(state, 390); + *strength = 65535 - val; + return 0; +} + +static int dib7000m_read_snr(struct dvb_frontend* fe, u16 *snr) +{ + *snr = 0x0000; + return 0; +} + +static int dib7000m_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune) +{ + tune->min_delay_ms = 1000; + return 0; +} + +static void dib7000m_release(struct dvb_frontend *demod) +{ + struct dib7000m_state *st = demod->demodulator_priv; + dibx000_exit_i2c_master(&st->i2c_master); + kfree(st); +} + +struct i2c_adapter * dib7000m_get_i2c_master(struct dvb_frontend *demod, enum dibx000_i2c_interface intf, int gating) +{ + struct dib7000m_state *st = demod->demodulator_priv; + return dibx000_get_i2c_adapter(&st->i2c_master, intf, gating); +} +EXPORT_SYMBOL(dib7000m_get_i2c_master); + +int dib7000m_pid_filter_ctrl(struct dvb_frontend *fe, u8 onoff) +{ + struct dib7000m_state *state = fe->demodulator_priv; + u16 val = dib7000m_read_word(state, 294 + state->reg_offs) & 0xffef; + val |= (onoff & 0x1) << 4; + dprintk("PID filter enabled %d\n", onoff); + return dib7000m_write_word(state, 294 + state->reg_offs, val); +} +EXPORT_SYMBOL(dib7000m_pid_filter_ctrl); + +int dib7000m_pid_filter(struct dvb_frontend *fe, u8 id, u16 pid, u8 onoff) +{ + struct dib7000m_state *state = fe->demodulator_priv; + dprintk("PID filter: index %x, PID %d, OnOff %d\n", id, pid, onoff); + return dib7000m_write_word(state, 300 + state->reg_offs + id, + onoff ? (1 << 13) | pid : 0); +} +EXPORT_SYMBOL(dib7000m_pid_filter); + +#if 0 +/* used with some prototype boards */ +int dib7000m_i2c_enumeration(struct i2c_adapter *i2c, int no_of_demods, + u8 default_addr, struct dib7000m_config cfg[]) +{ + struct dib7000m_state st = { .i2c_adap = i2c }; + int k = 0; + u8 new_addr = 0; + + for (k = no_of_demods-1; k >= 0; k--) { + st.cfg = cfg[k]; + + /* designated i2c address */ + new_addr = (0x40 + k) << 1; + st.i2c_addr = new_addr; + if (dib7000m_identify(&st) != 0) { + st.i2c_addr = default_addr; + if (dib7000m_identify(&st) != 0) { + dprintk("DiB7000M #%d: not identified\n", k); + return -EIO; + } + } + + /* start diversity to pull_down div_str - just for i2c-enumeration */ + dib7000m_set_output_mode(&st, OUTMODE_DIVERSITY); + + dib7000m_write_word(&st, 1796, 0x0); // select DVB-T output + + /* set new i2c address and force divstart */ + dib7000m_write_word(&st, 1794, (new_addr << 2) | 0x2); + + dprintk("IC %d initialized (to i2c_address 0x%x)\n", k, new_addr); + } + + for (k = 0; k < no_of_demods; k++) { + st.cfg = cfg[k]; + st.i2c_addr = (0x40 + k) << 1; + + // unforce divstr + dib7000m_write_word(&st,1794, st.i2c_addr << 2); + + /* deactivate div - it was just for i2c-enumeration */ + dib7000m_set_output_mode(&st, OUTMODE_HIGH_Z); + } + + return 0; +} +EXPORT_SYMBOL(dib7000m_i2c_enumeration); +#endif + +static const struct dvb_frontend_ops dib7000m_ops; +struct dvb_frontend * dib7000m_attach(struct i2c_adapter *i2c_adap, u8 i2c_addr, struct dib7000m_config *cfg) +{ + struct dvb_frontend *demod; + struct dib7000m_state *st; + st = kzalloc(sizeof(struct dib7000m_state), GFP_KERNEL); + if (st == NULL) + return NULL; + + memcpy(&st->cfg, cfg, sizeof(struct dib7000m_config)); + st->i2c_adap = i2c_adap; + st->i2c_addr = i2c_addr; + + demod = &st->demod; + demod->demodulator_priv = st; + memcpy(&st->demod.ops, &dib7000m_ops, sizeof(struct dvb_frontend_ops)); + mutex_init(&st->i2c_buffer_lock); + + st->timf_default = cfg->bw->timf; + + if (dib7000m_identify(st) != 0) + goto error; + + if (st->revision == 0x4000) + dibx000_init_i2c_master(&st->i2c_master, DIB7000, st->i2c_adap, st->i2c_addr); + else + dibx000_init_i2c_master(&st->i2c_master, DIB7000MC, st->i2c_adap, st->i2c_addr); + + dib7000m_demod_reset(st); + + return demod; + +error: + kfree(st); + return NULL; +} +EXPORT_SYMBOL_GPL(dib7000m_attach); + +static const struct dvb_frontend_ops dib7000m_ops = { + .delsys = { SYS_DVBT }, + .info = { + .name = "DiBcom 7000MA/MB/PA/PB/MC", + .frequency_min_hz = 44250 * kHz, + .frequency_max_hz = 867250 * kHz, + .frequency_stepsize_hz = 62500, + .caps = FE_CAN_INVERSION_AUTO | + 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_RECOVER | + FE_CAN_HIERARCHY_AUTO, + }, + + .release = dib7000m_release, + + .init = dib7000m_wakeup, + .sleep = dib7000m_sleep, + + .set_frontend = dib7000m_set_frontend, + .get_tune_settings = dib7000m_fe_get_tune_settings, + .get_frontend = dib7000m_get_frontend, + + .read_status = dib7000m_read_status, + .read_ber = dib7000m_read_ber, + .read_signal_strength = dib7000m_read_signal_strength, + .read_snr = dib7000m_read_snr, + .read_ucblocks = dib7000m_read_unc_blocks, +}; + +MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>"); +MODULE_DESCRIPTION("Driver for the DiBcom 7000MA/MB/PA/PB/MC COFDM demodulator"); +MODULE_LICENSE("GPL"); |