drivers/media/dvb/frontends/dvb-pll.c

   1 /*
   2  * descriptions + helper functions for simple dvb plls.
   3  *
   4  * (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 #include <linux/module.h>
  22 #include <linux/dvb/frontend.h>
  23 #include <asm/types.h>
  24
  25 #include "dvb-pll.h"
  26
  27 /* ----------------------------------------------------------- */
  28 /* descriptions                                                */
  29
  30 struct dvb_pll_desc dvb_pll_thomson_dtt7579 = {
  31         .name  = "Thomson dtt7579",
  32         .min   = 177000000,
  33         .max   = 858000000,
  34         .count = 5,
  35         .entries = {
  36                 {          0, 36166667, 166666, 0xb4, 0x03 }, /* go sleep */
  37                 {  443250000, 36166667, 166666, 0xb4, 0x02 },
  38                 {  542000000, 36166667, 166666, 0xb4, 0x08 },
  39                 {  771000000, 36166667, 166666, 0xbc, 0x08 },
  40                 {  999999999, 36166667, 166666, 0xf4, 0x08 },
  41         },
  42 };
  43 EXPORT_SYMBOL(dvb_pll_thomson_dtt7579);
  44
  45 struct dvb_pll_desc dvb_pll_thomson_dtt7610 = {
  46         .name  = "Thomson dtt7610",
  47         .min   =  44000000,
  48         .max   = 958000000,
  49         .count = 3,
  50         .entries = {
  51                 { 157250000, 44000000, 62500, 0x8e, 0x39 },
  52                 { 454000000, 44000000, 62500, 0x8e, 0x3a },
  53                 { 999999999, 44000000, 62500, 0x8e, 0x3c },
  54         },
  55 };
  56 EXPORT_SYMBOL(dvb_pll_thomson_dtt7610);
  57
  58 static void thomson_dtt759x_bw(u8 *buf, int bandwidth)
  59 {
  60         if (BANDWIDTH_7_MHZ == bandwidth)
  61                 buf[3] |= 0x10;
  62 }
  63
  64 struct dvb_pll_desc dvb_pll_thomson_dtt759x = {
  65         .name  = "Thomson dtt759x",
  66         .min   = 177000000,
  67         .max   = 896000000,
  68         .setbw = thomson_dtt759x_bw,
  69         .count = 6,
  70         .entries = {
  71                 {          0, 36166667, 166666, 0x84, 0x03 },
  72                 {  264000000, 36166667, 166666, 0xb4, 0x02 },
  73                 {  470000000, 36166667, 166666, 0xbc, 0x02 },
  74                 {  735000000, 36166667, 166666, 0xbc, 0x08 },
  75                 {  835000000, 36166667, 166666, 0xf4, 0x08 },
  76                 {  999999999, 36166667, 166666, 0xfc, 0x08 },
  77         },
  78 };
  79 EXPORT_SYMBOL(dvb_pll_thomson_dtt759x);
  80
  81 struct dvb_pll_desc dvb_pll_lg_z201 = {
  82         .name  = "LG z201",
  83         .min   = 174000000,
  84         .max   = 862000000,
  85         .count = 5,
  86         .entries = {
  87                 {          0, 36166667, 166666, 0xbc, 0x03 },
  88                 {  443250000, 36166667, 166666, 0xbc, 0x01 },
  89                 {  542000000, 36166667, 166666, 0xbc, 0x02 },
  90                 {  830000000, 36166667, 166666, 0xf4, 0x02 },
  91                 {  999999999, 36166667, 166666, 0xfc, 0x02 },
  92         },
  93 };
  94 EXPORT_SYMBOL(dvb_pll_lg_z201);
  95
  96 struct dvb_pll_desc dvb_pll_unknown_1 = {
  97         .name  = "unknown 1", /* used by dntv live dvb-t */
  98         .min   = 174000000,
  99         .max   = 862000000,
 100         .count = 9,
 101         .entries = {
 102                 {  150000000, 36166667, 166666, 0xb4, 0x01 },
 103                 {  173000000, 36166667, 166666, 0xbc, 0x01 },
 104                 {  250000000, 36166667, 166666, 0xb4, 0x02 },
 105                 {  400000000, 36166667, 166666, 0xbc, 0x02 },
 106                 {  420000000, 36166667, 166666, 0xf4, 0x02 },
 107                 {  470000000, 36166667, 166666, 0xfc, 0x02 },
 108                 {  600000000, 36166667, 166666, 0xbc, 0x08 },
 109                 {  730000000, 36166667, 166666, 0xf4, 0x08 },
 110                 {  999999999, 36166667, 166666, 0xfc, 0x08 },
 111         },
 112 };
 113 EXPORT_SYMBOL(dvb_pll_unknown_1);
 114
 115 /* Infineon TUA6010XS
 116  * used in Thomson Cable Tuner
 117  */
 118 struct dvb_pll_desc dvb_pll_tua6010xs = {
 119         .name  = "Infineon TUA6010XS",
 120         .min   =  44250000,
 121         .max   = 858000000,
 122         .count = 3,
 123         .entries = {
 124                 {  115750000, 36125000, 62500, 0x8e, 0x03 },
 125                 {  403250000, 36125000, 62500, 0x8e, 0x06 },
 126                 {  999999999, 36125000, 62500, 0x8e, 0x85 },
 127         },
 128 };
 129 EXPORT_SYMBOL(dvb_pll_tua6010xs);
 130
 131 /* Panasonic env57h1xd5 (some Philips PLL ?) */
 132 struct dvb_pll_desc dvb_pll_env57h1xd5 = {
 133         .name  = "Panasonic ENV57H1XD5",
 134         .min   =  44250000,
 135         .max   = 858000000,
 136         .count = 4,
 137         .entries = {
 138                 {  153000000, 36291666, 166666, 0xc2, 0x41 },
 139                 {  470000000, 36291666, 166666, 0xc2, 0x42 },
 140                 {  526000000, 36291666, 166666, 0xc2, 0x84 },
 141                 {  999999999, 36291666, 166666, 0xc2, 0xa4 },
 142         },
 143 };
 144 EXPORT_SYMBOL(dvb_pll_env57h1xd5);
 145
 146 /* Philips TDA6650/TDA6651
 147  * used in Panasonic ENV77H11D5
 148  */
 149 static void tda665x_bw(u8 *buf, int bandwidth)
 150 {
 151         if (bandwidth == BANDWIDTH_8_MHZ)
 152                 buf[3] |= 0x08;
 153 }
 154
 155 struct dvb_pll_desc dvb_pll_tda665x = {
 156         .name  = "Philips TDA6650/TDA6651",
 157         .min   =  44250000,
 158         .max   = 858000000,
 159         .setbw = tda665x_bw,
 160         .count = 12,
 161         .entries = {
 162                 {   93834000, 36249333, 166667, 0xca, 0x61 /* 011 0 0 0  01 */ },
 163                 {  123834000, 36249333, 166667, 0xca, 0xa1 /* 101 0 0 0  01 */ },
 164                 {  161000000, 36249333, 166667, 0xca, 0xa1 /* 101 0 0 0  01 */ },
 165                 {  163834000, 36249333, 166667, 0xca, 0xc2 /* 110 0 0 0  10 */ },
 166                 {  253834000, 36249333, 166667, 0xca, 0x62 /* 011 0 0 0  10 */ },
 167                 {  383834000, 36249333, 166667, 0xca, 0xa2 /* 101 0 0 0  10 */ },
 168                 {  443834000, 36249333, 166667, 0xca, 0xc2 /* 110 0 0 0  10 */ },
 169                 {  444000000, 36249333, 166667, 0xca, 0xc3 /* 110 0 0 0  11 */ },
 170                 {  583834000, 36249333, 166667, 0xca, 0x63 /* 011 0 0 0  11 */ },
 171                 {  793834000, 36249333, 166667, 0xca, 0xa3 /* 101 0 0 0  11 */ },
 172                 {  444834000, 36249333, 166667, 0xca, 0xc3 /* 110 0 0 0  11 */ },
 173                 {  861000000, 36249333, 166667, 0xca, 0xe3 /* 111 0 0 0  11 */ },
 174         }
 175 };
 176 EXPORT_SYMBOL(dvb_pll_tda665x);
 177
 178 /* Infineon TUA6034
 179  * used in LG TDTP E102P
 180  */
 181 static void tua6034_bw(u8 *buf, int bandwidth)
 182 {
 183         if (BANDWIDTH_7_MHZ != bandwidth)
 184                 buf[3] |= 0x08;
 185 }
 186
 187 struct dvb_pll_desc dvb_pll_tua6034 = {
 188         .name  = "Infineon TUA6034",
 189         .min   =  44250000,
 190         .max   = 858000000,
 191         .count = 3,
 192         .setbw = tua6034_bw,
 193         .entries = {
 194                 {  174500000, 36166667, 62500, 0xce, 0x01 },
 195                 {  230000000, 36166667, 62500, 0xce, 0x02 },
 196                 {  999999999, 36166667, 62500, 0xce, 0x04 },
 197         },
 198 };
 199 EXPORT_SYMBOL(dvb_pll_tua6034);
 200
 201 /* ----------------------------------------------------------- */
 202 /* code                                                        */
 203
 204 static int debug = 0;
 205 module_param(debug, int, 0644);
 206 MODULE_PARM_DESC(debug, "enable verbose debug messages");
 207
 208 int dvb_pll_configure(struct dvb_pll_desc *desc, u8 *buf,
 209                       u32 freq, int bandwidth)
 210 {
 211         u32 div;
 212         int i;
 213
 214         if (freq != 0 && (freq < desc->min || freq > desc->max))
 215             return -EINVAL;
 216
 217         for (i = 0; i < desc->count; i++) {
 218                 if (freq > desc->entries[i].limit)
 219                         continue;
 220                 break;
 221         }
 222         if (debug)
 223                 printk("pll: %s: freq=%d bw=%d | i=%d/%d\n",
 224                        desc->name, freq, bandwidth, i, desc->count);
 225         BUG_ON(i == desc->count);
 226
 227         div = (freq + desc->entries[i].offset) / desc->entries[i].stepsize;
 228         buf[0] = div >> 8;
 229         buf[1] = div & 0xff;
 230         buf[2] = desc->entries[i].cb1;
 231         buf[3] = desc->entries[i].cb2;
 232
 233         if (desc->setbw)
 234                 desc->setbw(buf, bandwidth);
 235
 236         if (debug)
 237                 printk("pll: %s: div=%d | buf=0x%02x,0x%02x,0x%02x,0x%02x\n",
 238                        desc->name, div, buf[0], buf[1], buf[2], buf[3]);
 239
 240         return 0;
 241 }
 242 EXPORT_SYMBOL(dvb_pll_configure);
 243
 244 MODULE_DESCRIPTION("dvb pll library");
 245 MODULE_AUTHOR("Gerd Knorr");
 246 MODULE_LICENSE("GPL");