1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
169 lines
4.7 KiB
C
169 lines
4.7 KiB
C
/*
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* $Id: dvb-pll.c,v 1.7 2005/02/10 11:52:02 kraxel Exp $
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*
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* descriptions + helper functions for simple dvb plls.
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*
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* (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/module.h>
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#include <linux/dvb/frontend.h>
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#include <asm/types.h>
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#include "dvb-pll.h"
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/* ----------------------------------------------------------- */
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/* descriptions */
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struct dvb_pll_desc dvb_pll_thomson_dtt7579 = {
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.name = "Thomson dtt7579",
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.min = 177000000,
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.max = 858000000,
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.count = 5,
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.entries = {
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{ 0, 36166667, 166666, 0xb4, 0x03 }, /* go sleep */
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{ 443250000, 36166667, 166666, 0xb4, 0x02 },
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{ 542000000, 36166667, 166666, 0xb4, 0x08 },
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{ 771000000, 36166667, 166666, 0xbc, 0x08 },
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{ 999999999, 36166667, 166666, 0xf4, 0x08 },
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},
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};
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EXPORT_SYMBOL(dvb_pll_thomson_dtt7579);
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struct dvb_pll_desc dvb_pll_thomson_dtt7610 = {
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.name = "Thomson dtt7610",
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.min = 44000000,
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.max = 958000000,
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.count = 3,
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.entries = {
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{ 157250000, 44000000, 62500, 0x8e, 0x39 },
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{ 454000000, 44000000, 62500, 0x8e, 0x3a },
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{ 999999999, 44000000, 62500, 0x8e, 0x3c },
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},
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};
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EXPORT_SYMBOL(dvb_pll_thomson_dtt7610);
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static void thomson_dtt759x_bw(u8 *buf, int bandwidth)
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{
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if (BANDWIDTH_7_MHZ == bandwidth)
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buf[3] |= 0x10;
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}
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struct dvb_pll_desc dvb_pll_thomson_dtt759x = {
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.name = "Thomson dtt759x",
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.min = 177000000,
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.max = 896000000,
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.setbw = thomson_dtt759x_bw,
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.count = 6,
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.entries = {
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{ 0, 36166667, 166666, 0x84, 0x03 },
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{ 264000000, 36166667, 166666, 0xb4, 0x02 },
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{ 470000000, 36166667, 166666, 0xbc, 0x02 },
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{ 735000000, 36166667, 166666, 0xbc, 0x08 },
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{ 835000000, 36166667, 166666, 0xf4, 0x08 },
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{ 999999999, 36166667, 166666, 0xfc, 0x08 },
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},
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};
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EXPORT_SYMBOL(dvb_pll_thomson_dtt759x);
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struct dvb_pll_desc dvb_pll_lg_z201 = {
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.name = "LG z201",
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.min = 174000000,
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.max = 862000000,
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.count = 5,
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.entries = {
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{ 0, 36166667, 166666, 0xbc, 0x03 },
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{ 443250000, 36166667, 166666, 0xbc, 0x01 },
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{ 542000000, 36166667, 166666, 0xbc, 0x02 },
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{ 830000000, 36166667, 166666, 0xf4, 0x02 },
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{ 999999999, 36166667, 166666, 0xfc, 0x02 },
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},
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};
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EXPORT_SYMBOL(dvb_pll_lg_z201);
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struct dvb_pll_desc dvb_pll_unknown_1 = {
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.name = "unknown 1", /* used by dntv live dvb-t */
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.min = 174000000,
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.max = 862000000,
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.count = 9,
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.entries = {
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{ 150000000, 36166667, 166666, 0xb4, 0x01 },
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{ 173000000, 36166667, 166666, 0xbc, 0x01 },
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{ 250000000, 36166667, 166666, 0xb4, 0x02 },
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{ 400000000, 36166667, 166666, 0xbc, 0x02 },
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{ 420000000, 36166667, 166666, 0xf4, 0x02 },
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{ 470000000, 36166667, 166666, 0xfc, 0x02 },
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{ 600000000, 36166667, 166666, 0xbc, 0x08 },
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{ 730000000, 36166667, 166666, 0xf4, 0x08 },
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{ 999999999, 36166667, 166666, 0xfc, 0x08 },
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},
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};
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EXPORT_SYMBOL(dvb_pll_unknown_1);
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/* ----------------------------------------------------------- */
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/* code */
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static int debug = 0;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "enable verbose debug messages");
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int dvb_pll_configure(struct dvb_pll_desc *desc, u8 *buf,
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u32 freq, int bandwidth)
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{
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u32 div;
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int i;
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if (freq != 0 && (freq < desc->min || freq > desc->max))
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return -EINVAL;
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for (i = 0; i < desc->count; i++) {
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if (freq > desc->entries[i].limit)
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continue;
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break;
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}
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if (debug)
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printk("pll: %s: freq=%d bw=%d | i=%d/%d\n",
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desc->name, freq, bandwidth, i, desc->count);
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BUG_ON(i == desc->count);
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div = (freq + desc->entries[i].offset) / desc->entries[i].stepsize;
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buf[0] = div >> 8;
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buf[1] = div & 0xff;
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buf[2] = desc->entries[i].cb1;
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buf[3] = desc->entries[i].cb2;
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if (desc->setbw)
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desc->setbw(buf, bandwidth);
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if (debug)
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printk("pll: %s: div=%d | buf=0x%02x,0x%02x,0x%02x,0x%02x\n",
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desc->name, div, buf[0], buf[1], buf[2], buf[3]);
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return 0;
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}
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EXPORT_SYMBOL(dvb_pll_configure);
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MODULE_DESCRIPTION("dvb pll library");
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MODULE_AUTHOR("Gerd Knorr");
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MODULE_LICENSE("GPL");
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/*
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* Local variables:
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* c-basic-offset: 8
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* End:
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*/
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