691 lines
14 KiB
C
691 lines
14 KiB
C
/*
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* Driver for the ST STV6111 tuner
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*
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* Copyright (C) 2014 Digital Devices GmbH
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 only, as published by the Free Software Foundation.
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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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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/firmware.h>
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#include <linux/i2c.h>
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#include <asm/div64.h>
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#include "stv6111.h"
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#include <media/dvb_frontend.h>
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struct stv {
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struct i2c_adapter *i2c;
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u8 adr;
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u8 reg[11];
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u32 ref_freq;
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u32 frequency;
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};
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struct slookup {
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s16 value;
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u16 reg_value;
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};
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static const struct slookup lnagain_nf_lookup[] = {
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/* Gain *100dB // Reg */
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{ 2572, 0 },
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{ 2575, 1 },
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{ 2580, 2 },
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{ 2588, 3 },
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{ 2596, 4 },
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{ 2611, 5 },
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{ 2633, 6 },
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{ 2664, 7 },
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{ 2701, 8 },
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{ 2753, 9 },
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{ 2816, 10 },
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{ 2902, 11 },
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{ 2995, 12 },
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{ 3104, 13 },
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{ 3215, 14 },
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{ 3337, 15 },
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{ 3492, 16 },
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{ 3614, 17 },
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{ 3731, 18 },
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{ 3861, 19 },
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{ 3988, 20 },
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{ 4124, 21 },
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{ 4253, 22 },
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{ 4386, 23 },
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{ 4505, 24 },
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{ 4623, 25 },
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{ 4726, 26 },
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{ 4821, 27 },
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{ 4903, 28 },
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{ 4979, 29 },
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{ 5045, 30 },
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{ 5102, 31 }
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};
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static const struct slookup lnagain_iip3_lookup[] = {
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/* Gain *100dB // reg */
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{ 1548, 0 },
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{ 1552, 1 },
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{ 1569, 2 },
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{ 1565, 3 },
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{ 1577, 4 },
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{ 1594, 5 },
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{ 1627, 6 },
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{ 1656, 7 },
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{ 1700, 8 },
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{ 1748, 9 },
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{ 1805, 10 },
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{ 1896, 11 },
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{ 1995, 12 },
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{ 2113, 13 },
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{ 2233, 14 },
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{ 2366, 15 },
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{ 2543, 16 },
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{ 2687, 17 },
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{ 2842, 18 },
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{ 2999, 19 },
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{ 3167, 20 },
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{ 3342, 21 },
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{ 3507, 22 },
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{ 3679, 23 },
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{ 3827, 24 },
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{ 3970, 25 },
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{ 4094, 26 },
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{ 4210, 27 },
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{ 4308, 28 },
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{ 4396, 29 },
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{ 4468, 30 },
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{ 4535, 31 }
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};
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static const struct slookup gain_rfagc_lookup[] = {
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/* Gain *100dB // reg */
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{ 4870, 0x3000 },
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{ 4850, 0x3C00 },
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{ 4800, 0x4500 },
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{ 4750, 0x4800 },
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{ 4700, 0x4B00 },
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{ 4650, 0x4D00 },
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{ 4600, 0x4F00 },
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{ 4550, 0x5100 },
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{ 4500, 0x5200 },
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{ 4420, 0x5500 },
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{ 4316, 0x5800 },
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{ 4200, 0x5B00 },
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{ 4119, 0x5D00 },
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{ 3999, 0x6000 },
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{ 3950, 0x6100 },
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{ 3876, 0x6300 },
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{ 3755, 0x6600 },
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{ 3641, 0x6900 },
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{ 3567, 0x6B00 },
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{ 3425, 0x6F00 },
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{ 3350, 0x7100 },
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{ 3236, 0x7400 },
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{ 3118, 0x7700 },
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{ 3004, 0x7A00 },
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{ 2917, 0x7C00 },
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{ 2776, 0x7F00 },
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{ 2635, 0x8200 },
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{ 2516, 0x8500 },
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{ 2406, 0x8800 },
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{ 2290, 0x8B00 },
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{ 2170, 0x8E00 },
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{ 2073, 0x9100 },
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{ 1949, 0x9400 },
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{ 1836, 0x9700 },
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{ 1712, 0x9A00 },
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{ 1631, 0x9C00 },
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{ 1515, 0x9F00 },
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{ 1400, 0xA200 },
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{ 1323, 0xA400 },
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{ 1203, 0xA700 },
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{ 1091, 0xAA00 },
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{ 1011, 0xAC00 },
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{ 904, 0xAF00 },
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{ 787, 0xB200 },
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{ 685, 0xB500 },
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{ 571, 0xB800 },
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{ 464, 0xBB00 },
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{ 374, 0xBE00 },
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{ 275, 0xC200 },
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{ 181, 0xC600 },
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{ 102, 0xCC00 },
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{ 49, 0xD900 }
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};
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/*
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* This table is 6 dB too low comapred to the others (probably created with
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* a different BB_MAG setting)
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*/
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static const struct slookup gain_channel_agc_nf_lookup[] = {
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/* Gain *100dB // reg */
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{ 7082, 0x3000 },
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{ 7052, 0x4000 },
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{ 7007, 0x4600 },
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{ 6954, 0x4A00 },
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{ 6909, 0x4D00 },
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{ 6833, 0x5100 },
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{ 6753, 0x5400 },
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{ 6659, 0x5700 },
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{ 6561, 0x5A00 },
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{ 6472, 0x5C00 },
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{ 6366, 0x5F00 },
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{ 6259, 0x6100 },
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{ 6151, 0x6400 },
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{ 6026, 0x6700 },
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{ 5920, 0x6900 },
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{ 5835, 0x6B00 },
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{ 5770, 0x6C00 },
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{ 5681, 0x6E00 },
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{ 5596, 0x7000 },
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{ 5503, 0x7200 },
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{ 5429, 0x7300 },
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{ 5319, 0x7500 },
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{ 5220, 0x7700 },
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{ 5111, 0x7900 },
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{ 4983, 0x7B00 },
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{ 4876, 0x7D00 },
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{ 4755, 0x7F00 },
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{ 4635, 0x8100 },
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{ 4499, 0x8300 },
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{ 4405, 0x8500 },
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{ 4323, 0x8600 },
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{ 4233, 0x8800 },
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{ 4156, 0x8A00 },
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{ 4038, 0x8C00 },
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{ 3935, 0x8E00 },
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{ 3823, 0x9000 },
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{ 3712, 0x9200 },
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{ 3601, 0x9500 },
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{ 3511, 0x9700 },
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{ 3413, 0x9900 },
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{ 3309, 0x9B00 },
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{ 3213, 0x9D00 },
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{ 3088, 0x9F00 },
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{ 2992, 0xA100 },
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{ 2878, 0xA400 },
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{ 2769, 0xA700 },
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{ 2645, 0xAA00 },
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{ 2538, 0xAD00 },
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{ 2441, 0xB000 },
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{ 2350, 0xB600 },
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{ 2237, 0xBA00 },
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{ 2137, 0xBF00 },
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{ 2039, 0xC500 },
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{ 1938, 0xDF00 },
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{ 1927, 0xFF00 }
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};
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static const struct slookup gain_channel_agc_iip3_lookup[] = {
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/* Gain *100dB // reg */
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{ 7070, 0x3000 },
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{ 7028, 0x4000 },
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{ 7019, 0x4600 },
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{ 6900, 0x4A00 },
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{ 6811, 0x4D00 },
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{ 6763, 0x5100 },
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{ 6690, 0x5400 },
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{ 6644, 0x5700 },
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{ 6617, 0x5A00 },
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{ 6598, 0x5C00 },
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{ 6462, 0x5F00 },
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{ 6348, 0x6100 },
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{ 6197, 0x6400 },
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{ 6154, 0x6700 },
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{ 6098, 0x6900 },
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{ 5893, 0x6B00 },
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{ 5812, 0x6C00 },
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{ 5773, 0x6E00 },
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{ 5723, 0x7000 },
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{ 5661, 0x7200 },
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{ 5579, 0x7300 },
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{ 5460, 0x7500 },
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{ 5308, 0x7700 },
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{ 5099, 0x7900 },
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{ 4910, 0x7B00 },
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{ 4800, 0x7D00 },
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{ 4785, 0x7F00 },
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{ 4635, 0x8100 },
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{ 4466, 0x8300 },
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{ 4314, 0x8500 },
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{ 4295, 0x8600 },
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{ 4144, 0x8800 },
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{ 3920, 0x8A00 },
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{ 3889, 0x8C00 },
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{ 3771, 0x8E00 },
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{ 3655, 0x9000 },
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{ 3446, 0x9200 },
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{ 3298, 0x9500 },
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{ 3083, 0x9700 },
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{ 3015, 0x9900 },
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{ 2833, 0x9B00 },
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{ 2746, 0x9D00 },
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{ 2632, 0x9F00 },
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{ 2598, 0xA100 },
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{ 2480, 0xA400 },
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{ 2236, 0xA700 },
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{ 2171, 0xAA00 },
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{ 2060, 0xAD00 },
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{ 1999, 0xB000 },
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{ 1974, 0xB600 },
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{ 1820, 0xBA00 },
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{ 1741, 0xBF00 },
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{ 1655, 0xC500 },
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{ 1444, 0xDF00 },
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{ 1325, 0xFF00 },
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};
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static inline u32 muldiv32(u32 a, u32 b, u32 c)
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{
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u64 tmp64;
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tmp64 = (u64)a * (u64)b;
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do_div(tmp64, c);
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return (u32)tmp64;
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}
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static int i2c_read(struct i2c_adapter *adap,
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u8 adr, u8 *msg, int len, u8 *answ, int alen)
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{
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struct i2c_msg msgs[2] = { { .addr = adr, .flags = 0,
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.buf = msg, .len = len},
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{ .addr = adr, .flags = I2C_M_RD,
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.buf = answ, .len = alen } };
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if (i2c_transfer(adap, msgs, 2) != 2) {
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dev_err(&adap->dev, "i2c read error\n");
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return -EIO;
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}
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return 0;
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}
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static int i2c_write(struct i2c_adapter *adap, u8 adr, u8 *data, int len)
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{
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struct i2c_msg msg = {.addr = adr, .flags = 0,
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.buf = data, .len = len};
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if (i2c_transfer(adap, &msg, 1) != 1) {
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dev_err(&adap->dev, "i2c write error\n");
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return -EIO;
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}
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return 0;
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}
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static int write_regs(struct stv *state, int reg, int len)
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{
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u8 d[12];
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memcpy(&d[1], &state->reg[reg], len);
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d[0] = reg;
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return i2c_write(state->i2c, state->adr, d, len + 1);
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}
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static int write_reg(struct stv *state, u8 reg, u8 val)
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{
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u8 d[2] = {reg, val};
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return i2c_write(state->i2c, state->adr, d, 2);
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}
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static int read_reg(struct stv *state, u8 reg, u8 *val)
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{
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return i2c_read(state->i2c, state->adr, ®, 1, val, 1);
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}
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static int wait_for_call_done(struct stv *state, u8 mask)
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{
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int status = 0;
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u32 lock_retry_count = 10;
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while (lock_retry_count > 0) {
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u8 regval;
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status = read_reg(state, 9, ®val);
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if (status < 0)
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return status;
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if ((regval & mask) == 0)
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break;
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usleep_range(4000, 6000);
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lock_retry_count -= 1;
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status = -EIO;
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}
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return status;
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}
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static void init_state(struct stv *state)
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{
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u32 clkdiv = 0;
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u32 agcmode = 0;
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u32 agcref = 2;
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u32 agcset = 0xffffffff;
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u32 bbmode = 0xffffffff;
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state->reg[0] = 0x08;
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state->reg[1] = 0x41;
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state->reg[2] = 0x8f;
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state->reg[3] = 0x00;
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state->reg[4] = 0xce;
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state->reg[5] = 0x54;
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state->reg[6] = 0x55;
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state->reg[7] = 0x45;
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state->reg[8] = 0x46;
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state->reg[9] = 0xbd;
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state->reg[10] = 0x11;
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state->ref_freq = 16000;
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if (clkdiv <= 3)
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state->reg[0x00] |= (clkdiv & 0x03);
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if (agcmode <= 3) {
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state->reg[0x03] |= (agcmode << 5);
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if (agcmode == 0x01)
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state->reg[0x01] |= 0x30;
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}
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if (bbmode <= 3)
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state->reg[0x01] = (state->reg[0x01] & ~0x30) | (bbmode << 4);
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if (agcref <= 7)
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state->reg[0x03] |= agcref;
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if (agcset <= 31)
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state->reg[0x02] = (state->reg[0x02] & ~0x1F) | agcset | 0x40;
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}
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static int attach_init(struct stv *state)
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{
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if (write_regs(state, 0, 11))
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return -ENODEV;
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return 0;
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}
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static void release(struct dvb_frontend *fe)
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{
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kfree(fe->tuner_priv);
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fe->tuner_priv = NULL;
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}
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static int set_bandwidth(struct dvb_frontend *fe, u32 cutoff_frequency)
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{
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struct stv *state = fe->tuner_priv;
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u32 index = (cutoff_frequency + 999999) / 1000000;
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int stat = 0;
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if (index < 6)
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index = 6;
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if (index > 50)
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index = 50;
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if ((state->reg[0x08] & ~0xFC) == ((index - 6) << 2))
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return 0;
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state->reg[0x08] = (state->reg[0x08] & ~0xFC) | ((index - 6) << 2);
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state->reg[0x09] = (state->reg[0x09] & ~0x0C) | 0x08;
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if (fe->ops.i2c_gate_ctrl)
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stat = fe->ops.i2c_gate_ctrl(fe, 1);
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if (!stat) {
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write_regs(state, 0x08, 2);
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wait_for_call_done(state, 0x08);
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}
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if (fe->ops.i2c_gate_ctrl && !stat)
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fe->ops.i2c_gate_ctrl(fe, 0);
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return stat;
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}
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static int set_lof(struct stv *state, u32 local_frequency, u32 cutoff_frequency)
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{
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u32 index = (cutoff_frequency + 999999) / 1000000;
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u32 frequency = (local_frequency + 500) / 1000;
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u32 p = 1, psel = 0, fvco, div, frac;
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u8 icp, tmp;
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if (index < 6)
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index = 6;
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if (index > 50)
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index = 50;
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if (frequency <= 1300000) {
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p = 4;
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psel = 1;
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} else {
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p = 2;
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psel = 0;
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}
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fvco = frequency * p;
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div = fvco / state->ref_freq;
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frac = fvco % state->ref_freq;
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frac = muldiv32(frac, 0x40000, state->ref_freq);
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icp = 0;
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if (fvco < 2700000)
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icp = 0;
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else if (fvco < 2950000)
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icp = 1;
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else if (fvco < 3300000)
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icp = 2;
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else if (fvco < 3700000)
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icp = 3;
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else if (fvco < 4200000)
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icp = 5;
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else if (fvco < 4800000)
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icp = 6;
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else
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icp = 7;
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state->reg[0x02] |= 0x80; /* LNA IIP3 Mode */
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state->reg[0x03] = (state->reg[0x03] & ~0x80) | (psel << 7);
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state->reg[0x04] = (div & 0xFF);
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state->reg[0x05] = (((div >> 8) & 0x01) | ((frac & 0x7F) << 1)) & 0xff;
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state->reg[0x06] = ((frac >> 7) & 0xFF);
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state->reg[0x07] = (state->reg[0x07] & ~0x07) | ((frac >> 15) & 0x07);
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state->reg[0x07] = (state->reg[0x07] & ~0xE0) | (icp << 5);
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state->reg[0x08] = (state->reg[0x08] & ~0xFC) | ((index - 6) << 2);
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/* Start cal vco,CF */
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state->reg[0x09] = (state->reg[0x09] & ~0x0C) | 0x0C;
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write_regs(state, 2, 8);
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wait_for_call_done(state, 0x0C);
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usleep_range(10000, 12000);
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read_reg(state, 0x03, &tmp);
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if (tmp & 0x10) {
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state->reg[0x02] &= ~0x80; /* LNA NF Mode */
|
|
write_regs(state, 2, 1);
|
|
}
|
|
read_reg(state, 0x08, &tmp);
|
|
|
|
state->frequency = frequency;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int set_params(struct dvb_frontend *fe)
|
|
{
|
|
struct stv *state = fe->tuner_priv;
|
|
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
|
|
u32 freq, cutoff;
|
|
int stat = 0;
|
|
|
|
if (p->delivery_system != SYS_DVBS && p->delivery_system != SYS_DVBS2)
|
|
return -EINVAL;
|
|
|
|
freq = p->frequency * 1000;
|
|
cutoff = 5000000 + muldiv32(p->symbol_rate, 135, 200);
|
|
|
|
if (fe->ops.i2c_gate_ctrl)
|
|
stat = fe->ops.i2c_gate_ctrl(fe, 1);
|
|
if (!stat)
|
|
set_lof(state, freq, cutoff);
|
|
if (fe->ops.i2c_gate_ctrl && !stat)
|
|
fe->ops.i2c_gate_ctrl(fe, 0);
|
|
return 0;
|
|
}
|
|
|
|
static s32 table_lookup(const struct slookup *table,
|
|
int table_size, u16 reg_value)
|
|
{
|
|
s32 gain;
|
|
s32 reg_diff;
|
|
int imin = 0;
|
|
int imax = table_size - 1;
|
|
int i;
|
|
|
|
/* Assumes Table[0].RegValue < Table[imax].RegValue */
|
|
if (reg_value <= table[0].reg_value) {
|
|
gain = table[0].value;
|
|
} else if (reg_value >= table[imax].reg_value) {
|
|
gain = table[imax].value;
|
|
} else {
|
|
while ((imax - imin) > 1) {
|
|
i = (imax + imin) / 2;
|
|
if ((table[imin].reg_value <= reg_value) &&
|
|
(reg_value <= table[i].reg_value))
|
|
imax = i;
|
|
else
|
|
imin = i;
|
|
}
|
|
reg_diff = table[imax].reg_value - table[imin].reg_value;
|
|
gain = table[imin].value;
|
|
if (reg_diff != 0)
|
|
gain += ((s32)(reg_value - table[imin].reg_value) *
|
|
(s32)(table[imax].value
|
|
- table[imin].value)) / reg_diff;
|
|
}
|
|
return gain;
|
|
}
|
|
|
|
static int get_rf_strength(struct dvb_frontend *fe, u16 *st)
|
|
{
|
|
struct stv *state = fe->tuner_priv;
|
|
u16 rfagc = *st;
|
|
s32 gain;
|
|
|
|
if ((state->reg[0x03] & 0x60) == 0) {
|
|
/* RF Mode, Read AGC ADC */
|
|
u8 reg = 0;
|
|
int stat = 0;
|
|
|
|
if (fe->ops.i2c_gate_ctrl)
|
|
stat = fe->ops.i2c_gate_ctrl(fe, 1);
|
|
if (!stat) {
|
|
write_reg(state, 0x02, state->reg[0x02] | 0x20);
|
|
read_reg(state, 2, ®);
|
|
if (reg & 0x20)
|
|
read_reg(state, 2, ®);
|
|
}
|
|
if (fe->ops.i2c_gate_ctrl && !stat)
|
|
fe->ops.i2c_gate_ctrl(fe, 0);
|
|
|
|
if ((state->reg[0x02] & 0x80) == 0)
|
|
/* NF */
|
|
gain = table_lookup(lnagain_nf_lookup,
|
|
ARRAY_SIZE(lnagain_nf_lookup),
|
|
reg & 0x1F);
|
|
else
|
|
/* IIP3 */
|
|
gain = table_lookup(lnagain_iip3_lookup,
|
|
ARRAY_SIZE(lnagain_iip3_lookup),
|
|
reg & 0x1F);
|
|
|
|
gain += table_lookup(gain_rfagc_lookup,
|
|
ARRAY_SIZE(gain_rfagc_lookup), rfagc);
|
|
|
|
gain -= 2400;
|
|
} else {
|
|
/* Channel Mode */
|
|
if ((state->reg[0x02] & 0x80) == 0) {
|
|
/* NF */
|
|
gain = table_lookup(
|
|
gain_channel_agc_nf_lookup,
|
|
ARRAY_SIZE(gain_channel_agc_nf_lookup), rfagc);
|
|
|
|
gain += 600;
|
|
} else {
|
|
/* IIP3 */
|
|
gain = table_lookup(
|
|
gain_channel_agc_iip3_lookup,
|
|
ARRAY_SIZE(gain_channel_agc_iip3_lookup),
|
|
rfagc);
|
|
}
|
|
}
|
|
|
|
if (state->frequency > 0)
|
|
/* Tilt correction ( 0.00016 dB/MHz ) */
|
|
gain -= ((((s32)(state->frequency / 1000) - 1550) * 2) / 12);
|
|
|
|
/* + (BBGain * 10); */
|
|
gain += (s32)((state->reg[0x01] & 0xC0) >> 6) * 600 - 1300;
|
|
|
|
if (gain < 0)
|
|
gain = 0;
|
|
else if (gain > 10000)
|
|
gain = 10000;
|
|
|
|
*st = 10000 - gain;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct dvb_tuner_ops tuner_ops = {
|
|
.info = {
|
|
.name = "ST STV6111",
|
|
.frequency_min_hz = 950 * MHz,
|
|
.frequency_max_hz = 2150 * MHz,
|
|
},
|
|
.set_params = set_params,
|
|
.release = release,
|
|
.get_rf_strength = get_rf_strength,
|
|
.set_bandwidth = set_bandwidth,
|
|
};
|
|
|
|
struct dvb_frontend *stv6111_attach(struct dvb_frontend *fe,
|
|
struct i2c_adapter *i2c, u8 adr)
|
|
{
|
|
struct stv *state;
|
|
int stat = -ENODEV;
|
|
int gatestat = 0;
|
|
|
|
state = kzalloc(sizeof(*state), GFP_KERNEL);
|
|
if (!state)
|
|
return NULL;
|
|
state->adr = adr;
|
|
state->i2c = i2c;
|
|
memcpy(&fe->ops.tuner_ops, &tuner_ops, sizeof(struct dvb_tuner_ops));
|
|
init_state(state);
|
|
|
|
if (fe->ops.i2c_gate_ctrl)
|
|
gatestat = fe->ops.i2c_gate_ctrl(fe, 1);
|
|
if (!gatestat)
|
|
stat = attach_init(state);
|
|
if (fe->ops.i2c_gate_ctrl && !gatestat)
|
|
fe->ops.i2c_gate_ctrl(fe, 0);
|
|
if (stat < 0) {
|
|
kfree(state);
|
|
return NULL;
|
|
}
|
|
fe->tuner_priv = state;
|
|
return fe;
|
|
}
|
|
EXPORT_SYMBOL_GPL(stv6111_attach);
|
|
|
|
MODULE_DESCRIPTION("ST STV6111 satellite tuner driver");
|
|
MODULE_AUTHOR("Ralph Metzler, Manfred Voelkel");
|
|
MODULE_LICENSE("GPL");
|