733 lines
15 KiB
C
733 lines
15 KiB
C
/*
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* ISDB-S driver for VA1J5JF8007/VA1J5JF8011
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*
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* Copyright (C) 2009 HIRANO Takahito <hiranotaka@zng.info>
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*
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* based on pt1dvr - http://pt1dvr.sourceforge.jp/
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* by Tomoaki Ishikawa <tomy@users.sourceforge.jp>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/i2c.h>
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#include "dvb_frontend.h"
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#include "va1j5jf8007s.h"
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enum va1j5jf8007s_tune_state {
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VA1J5JF8007S_IDLE,
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VA1J5JF8007S_SET_FREQUENCY_1,
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VA1J5JF8007S_SET_FREQUENCY_2,
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VA1J5JF8007S_SET_FREQUENCY_3,
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VA1J5JF8007S_CHECK_FREQUENCY,
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VA1J5JF8007S_SET_MODULATION,
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VA1J5JF8007S_CHECK_MODULATION,
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VA1J5JF8007S_SET_TS_ID,
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VA1J5JF8007S_CHECK_TS_ID,
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VA1J5JF8007S_TRACK,
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};
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struct va1j5jf8007s_state {
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const struct va1j5jf8007s_config *config;
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struct i2c_adapter *adap;
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struct dvb_frontend fe;
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enum va1j5jf8007s_tune_state tune_state;
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};
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static int va1j5jf8007s_read_snr(struct dvb_frontend *fe, u16 *snr)
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{
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struct va1j5jf8007s_state *state;
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u8 addr;
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int i;
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u8 write_buf[1], read_buf[1];
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struct i2c_msg msgs[2];
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s32 word, x1, x2, x3, x4, x5, y;
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state = fe->demodulator_priv;
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addr = state->config->demod_address;
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word = 0;
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for (i = 0; i < 2; i++) {
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write_buf[0] = 0xbc + i;
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msgs[0].addr = addr;
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msgs[0].flags = 0;
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msgs[0].len = sizeof(write_buf);
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msgs[0].buf = write_buf;
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msgs[1].addr = addr;
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msgs[1].flags = I2C_M_RD;
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msgs[1].len = sizeof(read_buf);
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msgs[1].buf = read_buf;
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if (i2c_transfer(state->adap, msgs, 2) != 2)
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return -EREMOTEIO;
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word <<= 8;
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word |= read_buf[0];
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}
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word -= 3000;
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if (word < 0)
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word = 0;
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x1 = int_sqrt(word << 16) * ((15625ll << 21) / 1000000);
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x2 = (s64)x1 * x1 >> 31;
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x3 = (s64)x2 * x1 >> 31;
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x4 = (s64)x2 * x2 >> 31;
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x5 = (s64)x4 * x1 >> 31;
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y = (58857ll << 23) / 1000;
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y -= (s64)x1 * ((89565ll << 24) / 1000) >> 30;
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y += (s64)x2 * ((88977ll << 24) / 1000) >> 28;
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y -= (s64)x3 * ((50259ll << 25) / 1000) >> 27;
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y += (s64)x4 * ((14341ll << 27) / 1000) >> 27;
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y -= (s64)x5 * ((16346ll << 30) / 10000) >> 28;
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*snr = y < 0 ? 0 : y >> 15;
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return 0;
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}
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static int va1j5jf8007s_get_frontend_algo(struct dvb_frontend *fe)
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{
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return DVBFE_ALGO_HW;
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}
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static int
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va1j5jf8007s_read_status(struct dvb_frontend *fe, enum fe_status *status)
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{
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struct va1j5jf8007s_state *state;
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state = fe->demodulator_priv;
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switch (state->tune_state) {
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case VA1J5JF8007S_IDLE:
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case VA1J5JF8007S_SET_FREQUENCY_1:
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case VA1J5JF8007S_SET_FREQUENCY_2:
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case VA1J5JF8007S_SET_FREQUENCY_3:
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case VA1J5JF8007S_CHECK_FREQUENCY:
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*status = 0;
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return 0;
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case VA1J5JF8007S_SET_MODULATION:
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case VA1J5JF8007S_CHECK_MODULATION:
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*status |= FE_HAS_SIGNAL;
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return 0;
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case VA1J5JF8007S_SET_TS_ID:
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case VA1J5JF8007S_CHECK_TS_ID:
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*status |= FE_HAS_SIGNAL | FE_HAS_CARRIER;
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return 0;
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case VA1J5JF8007S_TRACK:
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*status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_LOCK;
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return 0;
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}
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BUG();
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}
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struct va1j5jf8007s_cb_map {
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u32 frequency;
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u8 cb;
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};
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static const struct va1j5jf8007s_cb_map va1j5jf8007s_cb_maps[] = {
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{ 986000, 0xb2 },
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{ 1072000, 0xd2 },
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{ 1154000, 0xe2 },
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{ 1291000, 0x20 },
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{ 1447000, 0x40 },
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{ 1615000, 0x60 },
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{ 1791000, 0x80 },
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{ 1972000, 0xa0 },
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};
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static u8 va1j5jf8007s_lookup_cb(u32 frequency)
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{
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int i;
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const struct va1j5jf8007s_cb_map *map;
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for (i = 0; i < ARRAY_SIZE(va1j5jf8007s_cb_maps); i++) {
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map = &va1j5jf8007s_cb_maps[i];
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if (frequency < map->frequency)
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return map->cb;
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}
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return 0xc0;
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}
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static int va1j5jf8007s_set_frequency_1(struct va1j5jf8007s_state *state)
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{
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u32 frequency;
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u16 word;
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u8 buf[6];
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struct i2c_msg msg;
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frequency = state->fe.dtv_property_cache.frequency;
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word = (frequency + 500) / 1000;
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if (frequency < 1072000)
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word = (word << 1 & ~0x1f) | (word & 0x0f);
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buf[0] = 0xfe;
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buf[1] = 0xc0;
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buf[2] = 0x40 | word >> 8;
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buf[3] = word;
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buf[4] = 0xe0;
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buf[5] = va1j5jf8007s_lookup_cb(frequency);
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msg.addr = state->config->demod_address;
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msg.flags = 0;
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msg.len = sizeof(buf);
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msg.buf = buf;
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if (i2c_transfer(state->adap, &msg, 1) != 1)
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return -EREMOTEIO;
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return 0;
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}
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static int va1j5jf8007s_set_frequency_2(struct va1j5jf8007s_state *state)
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{
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u8 buf[3];
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struct i2c_msg msg;
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buf[0] = 0xfe;
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buf[1] = 0xc0;
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buf[2] = 0xe4;
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msg.addr = state->config->demod_address;
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msg.flags = 0;
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msg.len = sizeof(buf);
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msg.buf = buf;
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if (i2c_transfer(state->adap, &msg, 1) != 1)
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return -EREMOTEIO;
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return 0;
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}
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static int va1j5jf8007s_set_frequency_3(struct va1j5jf8007s_state *state)
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{
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u32 frequency;
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u8 buf[4];
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struct i2c_msg msg;
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frequency = state->fe.dtv_property_cache.frequency;
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buf[0] = 0xfe;
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buf[1] = 0xc0;
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buf[2] = 0xf4;
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buf[3] = va1j5jf8007s_lookup_cb(frequency) | 0x4;
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msg.addr = state->config->demod_address;
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msg.flags = 0;
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msg.len = sizeof(buf);
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msg.buf = buf;
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if (i2c_transfer(state->adap, &msg, 1) != 1)
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return -EREMOTEIO;
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return 0;
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}
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static int
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va1j5jf8007s_check_frequency(struct va1j5jf8007s_state *state, int *lock)
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{
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u8 addr;
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u8 write_buf[2], read_buf[1];
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struct i2c_msg msgs[2];
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addr = state->config->demod_address;
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write_buf[0] = 0xfe;
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write_buf[1] = 0xc1;
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msgs[0].addr = addr;
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msgs[0].flags = 0;
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msgs[0].len = sizeof(write_buf);
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msgs[0].buf = write_buf;
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msgs[1].addr = addr;
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msgs[1].flags = I2C_M_RD;
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msgs[1].len = sizeof(read_buf);
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msgs[1].buf = read_buf;
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if (i2c_transfer(state->adap, msgs, 2) != 2)
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return -EREMOTEIO;
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*lock = read_buf[0] & 0x40;
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return 0;
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}
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static int va1j5jf8007s_set_modulation(struct va1j5jf8007s_state *state)
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{
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u8 buf[2];
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struct i2c_msg msg;
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buf[0] = 0x03;
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buf[1] = 0x01;
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msg.addr = state->config->demod_address;
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msg.flags = 0;
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msg.len = sizeof(buf);
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msg.buf = buf;
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if (i2c_transfer(state->adap, &msg, 1) != 1)
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return -EREMOTEIO;
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return 0;
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}
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static int
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va1j5jf8007s_check_modulation(struct va1j5jf8007s_state *state, int *lock)
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{
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u8 addr;
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u8 write_buf[1], read_buf[1];
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struct i2c_msg msgs[2];
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addr = state->config->demod_address;
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write_buf[0] = 0xc3;
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msgs[0].addr = addr;
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msgs[0].flags = 0;
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msgs[0].len = sizeof(write_buf);
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msgs[0].buf = write_buf;
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msgs[1].addr = addr;
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msgs[1].flags = I2C_M_RD;
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msgs[1].len = sizeof(read_buf);
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msgs[1].buf = read_buf;
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if (i2c_transfer(state->adap, msgs, 2) != 2)
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return -EREMOTEIO;
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*lock = !(read_buf[0] & 0x10);
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return 0;
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}
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static int
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va1j5jf8007s_set_ts_id(struct va1j5jf8007s_state *state)
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{
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u32 ts_id;
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u8 buf[3];
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struct i2c_msg msg;
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ts_id = state->fe.dtv_property_cache.stream_id;
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if (!ts_id || ts_id == NO_STREAM_ID_FILTER)
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return 0;
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buf[0] = 0x8f;
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buf[1] = ts_id >> 8;
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buf[2] = ts_id;
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msg.addr = state->config->demod_address;
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msg.flags = 0;
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msg.len = sizeof(buf);
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msg.buf = buf;
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if (i2c_transfer(state->adap, &msg, 1) != 1)
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return -EREMOTEIO;
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return 0;
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}
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static int
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va1j5jf8007s_check_ts_id(struct va1j5jf8007s_state *state, int *lock)
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{
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u8 addr;
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u8 write_buf[1], read_buf[2];
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struct i2c_msg msgs[2];
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u32 ts_id;
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ts_id = state->fe.dtv_property_cache.stream_id;
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if (!ts_id || ts_id == NO_STREAM_ID_FILTER) {
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*lock = 1;
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return 0;
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}
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addr = state->config->demod_address;
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write_buf[0] = 0xe6;
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msgs[0].addr = addr;
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msgs[0].flags = 0;
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msgs[0].len = sizeof(write_buf);
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msgs[0].buf = write_buf;
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msgs[1].addr = addr;
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msgs[1].flags = I2C_M_RD;
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msgs[1].len = sizeof(read_buf);
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msgs[1].buf = read_buf;
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if (i2c_transfer(state->adap, msgs, 2) != 2)
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return -EREMOTEIO;
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*lock = (read_buf[0] << 8 | read_buf[1]) == ts_id;
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return 0;
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}
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static int
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va1j5jf8007s_tune(struct dvb_frontend *fe,
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bool re_tune,
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unsigned int mode_flags, unsigned int *delay,
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enum fe_status *status)
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{
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struct va1j5jf8007s_state *state;
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int ret;
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int lock = 0;
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state = fe->demodulator_priv;
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if (re_tune)
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state->tune_state = VA1J5JF8007S_SET_FREQUENCY_1;
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switch (state->tune_state) {
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case VA1J5JF8007S_IDLE:
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*delay = 3 * HZ;
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*status = 0;
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return 0;
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case VA1J5JF8007S_SET_FREQUENCY_1:
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ret = va1j5jf8007s_set_frequency_1(state);
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if (ret < 0)
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return ret;
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state->tune_state = VA1J5JF8007S_SET_FREQUENCY_2;
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*delay = 0;
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*status = 0;
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return 0;
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case VA1J5JF8007S_SET_FREQUENCY_2:
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ret = va1j5jf8007s_set_frequency_2(state);
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if (ret < 0)
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return ret;
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state->tune_state = VA1J5JF8007S_SET_FREQUENCY_3;
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*delay = (HZ + 99) / 100;
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*status = 0;
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return 0;
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case VA1J5JF8007S_SET_FREQUENCY_3:
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ret = va1j5jf8007s_set_frequency_3(state);
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if (ret < 0)
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return ret;
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state->tune_state = VA1J5JF8007S_CHECK_FREQUENCY;
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*delay = 0;
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*status = 0;
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return 0;
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case VA1J5JF8007S_CHECK_FREQUENCY:
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ret = va1j5jf8007s_check_frequency(state, &lock);
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if (ret < 0)
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return ret;
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if (!lock) {
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*delay = (HZ + 999) / 1000;
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*status = 0;
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return 0;
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}
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state->tune_state = VA1J5JF8007S_SET_MODULATION;
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*delay = 0;
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*status = FE_HAS_SIGNAL;
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return 0;
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case VA1J5JF8007S_SET_MODULATION:
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ret = va1j5jf8007s_set_modulation(state);
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if (ret < 0)
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return ret;
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state->tune_state = VA1J5JF8007S_CHECK_MODULATION;
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*delay = 0;
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*status = FE_HAS_SIGNAL;
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return 0;
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case VA1J5JF8007S_CHECK_MODULATION:
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ret = va1j5jf8007s_check_modulation(state, &lock);
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if (ret < 0)
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return ret;
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if (!lock) {
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*delay = (HZ + 49) / 50;
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*status = FE_HAS_SIGNAL;
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return 0;
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}
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state->tune_state = VA1J5JF8007S_SET_TS_ID;
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*delay = 0;
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*status = FE_HAS_SIGNAL | FE_HAS_CARRIER;
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return 0;
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case VA1J5JF8007S_SET_TS_ID:
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ret = va1j5jf8007s_set_ts_id(state);
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if (ret < 0)
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return ret;
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state->tune_state = VA1J5JF8007S_CHECK_TS_ID;
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return 0;
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case VA1J5JF8007S_CHECK_TS_ID:
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ret = va1j5jf8007s_check_ts_id(state, &lock);
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if (ret < 0)
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return ret;
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if (!lock) {
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*delay = (HZ + 99) / 100;
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*status = FE_HAS_SIGNAL | FE_HAS_CARRIER;
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return 0;
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}
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state->tune_state = VA1J5JF8007S_TRACK;
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/* fall through */
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case VA1J5JF8007S_TRACK:
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*delay = 3 * HZ;
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*status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_LOCK;
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return 0;
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}
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BUG();
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}
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static int va1j5jf8007s_init_frequency(struct va1j5jf8007s_state *state)
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{
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u8 buf[4];
|
|
struct i2c_msg msg;
|
|
|
|
buf[0] = 0xfe;
|
|
buf[1] = 0xc0;
|
|
buf[2] = 0xf0;
|
|
buf[3] = 0x04;
|
|
|
|
msg.addr = state->config->demod_address;
|
|
msg.flags = 0;
|
|
msg.len = sizeof(buf);
|
|
msg.buf = buf;
|
|
|
|
if (i2c_transfer(state->adap, &msg, 1) != 1)
|
|
return -EREMOTEIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int va1j5jf8007s_set_sleep(struct va1j5jf8007s_state *state, int sleep)
|
|
{
|
|
u8 buf[2];
|
|
struct i2c_msg msg;
|
|
|
|
buf[0] = 0x17;
|
|
buf[1] = sleep ? 0x01 : 0x00;
|
|
|
|
msg.addr = state->config->demod_address;
|
|
msg.flags = 0;
|
|
msg.len = sizeof(buf);
|
|
msg.buf = buf;
|
|
|
|
if (i2c_transfer(state->adap, &msg, 1) != 1)
|
|
return -EREMOTEIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int va1j5jf8007s_sleep(struct dvb_frontend *fe)
|
|
{
|
|
struct va1j5jf8007s_state *state;
|
|
int ret;
|
|
|
|
state = fe->demodulator_priv;
|
|
|
|
ret = va1j5jf8007s_init_frequency(state);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return va1j5jf8007s_set_sleep(state, 1);
|
|
}
|
|
|
|
static int va1j5jf8007s_init(struct dvb_frontend *fe)
|
|
{
|
|
struct va1j5jf8007s_state *state;
|
|
|
|
state = fe->demodulator_priv;
|
|
state->tune_state = VA1J5JF8007S_IDLE;
|
|
|
|
return va1j5jf8007s_set_sleep(state, 0);
|
|
}
|
|
|
|
static void va1j5jf8007s_release(struct dvb_frontend *fe)
|
|
{
|
|
struct va1j5jf8007s_state *state;
|
|
state = fe->demodulator_priv;
|
|
kfree(state);
|
|
}
|
|
|
|
static const struct dvb_frontend_ops va1j5jf8007s_ops = {
|
|
.delsys = { SYS_ISDBS },
|
|
.info = {
|
|
.name = "VA1J5JF8007/VA1J5JF8011 ISDB-S",
|
|
.frequency_min = 950000,
|
|
.frequency_max = 2150000,
|
|
.frequency_stepsize = 1000,
|
|
.caps = FE_CAN_INVERSION_AUTO | FE_CAN_FEC_AUTO |
|
|
FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO |
|
|
FE_CAN_GUARD_INTERVAL_AUTO | FE_CAN_HIERARCHY_AUTO |
|
|
FE_CAN_MULTISTREAM,
|
|
},
|
|
|
|
.read_snr = va1j5jf8007s_read_snr,
|
|
.get_frontend_algo = va1j5jf8007s_get_frontend_algo,
|
|
.read_status = va1j5jf8007s_read_status,
|
|
.tune = va1j5jf8007s_tune,
|
|
.sleep = va1j5jf8007s_sleep,
|
|
.init = va1j5jf8007s_init,
|
|
.release = va1j5jf8007s_release,
|
|
};
|
|
|
|
static int va1j5jf8007s_prepare_1(struct va1j5jf8007s_state *state)
|
|
{
|
|
u8 addr;
|
|
u8 write_buf[1], read_buf[1];
|
|
struct i2c_msg msgs[2];
|
|
|
|
addr = state->config->demod_address;
|
|
|
|
write_buf[0] = 0x07;
|
|
|
|
msgs[0].addr = addr;
|
|
msgs[0].flags = 0;
|
|
msgs[0].len = sizeof(write_buf);
|
|
msgs[0].buf = write_buf;
|
|
|
|
msgs[1].addr = addr;
|
|
msgs[1].flags = I2C_M_RD;
|
|
msgs[1].len = sizeof(read_buf);
|
|
msgs[1].buf = read_buf;
|
|
|
|
if (i2c_transfer(state->adap, msgs, 2) != 2)
|
|
return -EREMOTEIO;
|
|
|
|
if (read_buf[0] != 0x41)
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const u8 va1j5jf8007s_20mhz_prepare_bufs[][2] = {
|
|
{0x04, 0x02}, {0x0d, 0x55}, {0x11, 0x40}, {0x13, 0x80}, {0x17, 0x01},
|
|
{0x1c, 0x0a}, {0x1d, 0xaa}, {0x1e, 0x20}, {0x1f, 0x88}, {0x51, 0xb0},
|
|
{0x52, 0x89}, {0x53, 0xb3}, {0x5a, 0x2d}, {0x5b, 0xd3}, {0x85, 0x69},
|
|
{0x87, 0x04}, {0x8e, 0x02}, {0xa3, 0xf7}, {0xa5, 0xc0},
|
|
};
|
|
|
|
static const u8 va1j5jf8007s_25mhz_prepare_bufs[][2] = {
|
|
{0x04, 0x02}, {0x11, 0x40}, {0x13, 0x80}, {0x17, 0x01}, {0x1c, 0x0a},
|
|
{0x1d, 0xaa}, {0x1e, 0x20}, {0x1f, 0x88}, {0x51, 0xb0}, {0x52, 0x89},
|
|
{0x53, 0xb3}, {0x5a, 0x2d}, {0x5b, 0xd3}, {0x85, 0x69}, {0x87, 0x04},
|
|
{0x8e, 0x26}, {0xa3, 0xf7}, {0xa5, 0xc0},
|
|
};
|
|
|
|
static int va1j5jf8007s_prepare_2(struct va1j5jf8007s_state *state)
|
|
{
|
|
const u8 (*bufs)[2];
|
|
int size;
|
|
u8 addr;
|
|
u8 buf[2];
|
|
struct i2c_msg msg;
|
|
int i;
|
|
|
|
switch (state->config->frequency) {
|
|
case VA1J5JF8007S_20MHZ:
|
|
bufs = va1j5jf8007s_20mhz_prepare_bufs;
|
|
size = ARRAY_SIZE(va1j5jf8007s_20mhz_prepare_bufs);
|
|
break;
|
|
case VA1J5JF8007S_25MHZ:
|
|
bufs = va1j5jf8007s_25mhz_prepare_bufs;
|
|
size = ARRAY_SIZE(va1j5jf8007s_25mhz_prepare_bufs);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
addr = state->config->demod_address;
|
|
|
|
msg.addr = addr;
|
|
msg.flags = 0;
|
|
msg.len = 2;
|
|
msg.buf = buf;
|
|
for (i = 0; i < size; i++) {
|
|
memcpy(buf, bufs[i], sizeof(buf));
|
|
if (i2c_transfer(state->adap, &msg, 1) != 1)
|
|
return -EREMOTEIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* must be called after va1j5jf8007t_attach */
|
|
int va1j5jf8007s_prepare(struct dvb_frontend *fe)
|
|
{
|
|
struct va1j5jf8007s_state *state;
|
|
int ret;
|
|
|
|
state = fe->demodulator_priv;
|
|
|
|
ret = va1j5jf8007s_prepare_1(state);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = va1j5jf8007s_prepare_2(state);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return va1j5jf8007s_init_frequency(state);
|
|
}
|
|
|
|
struct dvb_frontend *
|
|
va1j5jf8007s_attach(const struct va1j5jf8007s_config *config,
|
|
struct i2c_adapter *adap)
|
|
{
|
|
struct va1j5jf8007s_state *state;
|
|
struct dvb_frontend *fe;
|
|
u8 buf[2];
|
|
struct i2c_msg msg;
|
|
|
|
state = kzalloc(sizeof(struct va1j5jf8007s_state), GFP_KERNEL);
|
|
if (!state)
|
|
return NULL;
|
|
|
|
state->config = config;
|
|
state->adap = adap;
|
|
|
|
fe = &state->fe;
|
|
memcpy(&fe->ops, &va1j5jf8007s_ops, sizeof(struct dvb_frontend_ops));
|
|
fe->demodulator_priv = state;
|
|
|
|
buf[0] = 0x01;
|
|
buf[1] = 0x80;
|
|
|
|
msg.addr = state->config->demod_address;
|
|
msg.flags = 0;
|
|
msg.len = sizeof(buf);
|
|
msg.buf = buf;
|
|
|
|
if (i2c_transfer(state->adap, &msg, 1) != 1) {
|
|
kfree(state);
|
|
return NULL;
|
|
}
|
|
|
|
return fe;
|
|
}
|