drivers/media/dvb/frontends/s921_core.c

   1 /*
   2  * Driver for Sharp s921 driver
   3  *
   4  * Copyright (C) 2008 Markus Rechberger <mrechberger@sundtek.de>
   5  *
   6  */
   7
   8
   9 #include <linux/kernel.h>
  10 #include <linux/module.h>
  11 #include <linux/delay.h>
  12 #include "s921_core.h"
  13
  14 static int s921_isdb_init(struct s921_isdb_t *dev);
  15 static int s921_isdb_set_parameters(struct s921_isdb_t *dev, struct s921_isdb_t_transmission_mode_params *params);
  16 static int s921_isdb_tune(struct s921_isdb_t *dev, struct s921_isdb_t_tune_params *params);
  17 static int s921_isdb_get_status(struct s921_isdb_t *dev, void *data);
  18
  19 static u8 init_table[]={ 0x01, 0x40, 0x02, 0x00, 0x03, 0x40, 0x04, 0x01,
  20                          0x05, 0x00, 0x06, 0x00, 0x07, 0x00, 0x08, 0x00,
  21                          0x09, 0x00, 0x0a, 0x00, 0x0b, 0x5a, 0x0c, 0x00,
  22                          0x0d, 0x00, 0x0f, 0x00, 0x13, 0x1b, 0x14, 0x80,
  23                          0x15, 0x40, 0x17, 0x70, 0x18, 0x01, 0x19, 0x12,
  24                          0x1a, 0x01, 0x1b, 0x12, 0x1c, 0xa0, 0x1d, 0x00,
  25                          0x1e, 0x0a, 0x1f, 0x08, 0x20, 0x40, 0x21, 0xff,
  26                          0x22, 0x4c, 0x23, 0x4e, 0x24, 0x4c, 0x25, 0x00,
  27                          0x26, 0x00, 0x27, 0xf4, 0x28, 0x60, 0x29, 0x88,
  28                          0x2a, 0x40, 0x2b, 0x40, 0x2c, 0xff, 0x2d, 0x00,
  29                          0x2e, 0xff, 0x2f, 0x00, 0x30, 0x20, 0x31, 0x06,
  30                          0x32, 0x0c, 0x34, 0x0f, 0x37, 0xfe, 0x38, 0x00,
  31                          0x39, 0x63, 0x3a, 0x10, 0x3b, 0x10, 0x47, 0x00,
  32                          0x49, 0xe5, 0x4b, 0x00, 0x50, 0xc0, 0x52, 0x20,
  33                          0x54, 0x5a, 0x55, 0x5b, 0x56, 0x40, 0x57, 0x70,
  34                          0x5c, 0x50, 0x5d, 0x00, 0x62, 0x17, 0x63, 0x2f,
  35                          0x64, 0x6f, 0x68, 0x00, 0x69, 0x89, 0x6a, 0x00,
  36                          0x6b, 0x00, 0x6c, 0x00, 0x6d, 0x00, 0x6e, 0x00,
  37                          0x70, 0x00, 0x71, 0x00, 0x75, 0x00, 0x76, 0x30,
  38                          0x77, 0x01, 0xaf, 0x00, 0xb0, 0xa0, 0xb2, 0x3d,
  39                          0xb3, 0x25, 0xb4, 0x8b, 0xb5, 0x4b, 0xb6, 0x3f,
  40                          0xb7, 0xff, 0xb8, 0xff, 0xb9, 0xfc, 0xba, 0x00,
  41                          0xbb, 0x00, 0xbc, 0x00, 0xd0, 0x30, 0xe4, 0x84,
  42                          0xf0, 0x48, 0xf1, 0x19, 0xf2, 0x5a, 0xf3, 0x8e,
  43                          0xf4, 0x2d, 0xf5, 0x07, 0xf6, 0x5a, 0xf7, 0xba,
  44                          0xf8, 0xd7 };
  45
  46 static u8 c_table[]={ 0x58, 0x8a, 0x7b, 0x59, 0x8c, 0x7b, 0x5a, 0x8e, 0x5b,
  47                       0x5b, 0x90, 0x5b, 0x5c, 0x92, 0x5b, 0x5d, 0x94, 0x5b,
  48                       0x5e, 0x96, 0x5b, 0x5f, 0x98, 0x3b, 0x60, 0x9a, 0x3b,
  49                       0x61, 0x9c, 0x3b, 0x62, 0x9e, 0x3b, 0x63, 0xa0, 0x3b,
  50                       0x64, 0xa2, 0x1b, 0x65, 0xa4, 0x1b, 0x66, 0xa6, 0x1b,
  51                       0x67, 0xa8, 0x1b, 0x68, 0xaa, 0x1b, 0x69, 0xac, 0x1b,
  52                       0x6a, 0xae, 0x1b, 0x6b, 0xb0, 0x1b, 0x6c, 0xb2, 0x1b,
  53                       0x6d, 0xb4, 0xfb, 0x6e, 0xb6, 0xfb, 0x6f, 0xb8, 0xfb,
  54                       0x70, 0xba, 0xfb, 0x71, 0xbc, 0xdb, 0x72, 0xbe, 0xdb,
  55                       0x73, 0xc0, 0xdb, 0x74, 0xc2, 0xdb, 0x75, 0xc4, 0xdb,
  56                       0x76, 0xc6, 0xdb, 0x77, 0xc8, 0xbb, 0x78, 0xca, 0xbb,
  57                       0x79, 0xcc, 0xbb, 0x7a, 0xce, 0xbb, 0x7b, 0xd0, 0xbb,
  58                       0x7c, 0xd2, 0xbb, 0x7d, 0xd4, 0xbb, 0x7e, 0xd6, 0xbb,
  59                       0x7f, 0xd8, 0xbb, 0x80, 0xda, 0x9b, 0x81, 0xdc, 0x9b,
  60                       0x82, 0xde, 0x9b, 0x83, 0xe0, 0x9b, 0x84, 0xe2, 0x9b,
  61                       0x85, 0xe4, 0x9b, 0x86, 0xe6, 0x9b, 0x87, 0xe8, 0x9b,
  62                       0x88, 0xea, 0x9b, 0x89, 0xec, 0x9b };
  63
  64 int s921_isdb_cmd(struct s921_isdb_t *dev, u32 cmd, void *data) {
  65         switch(cmd) {
  66         case ISDB_T_CMD_INIT:
  67                 s921_isdb_init(dev);
  68                 break;
  69         case ISDB_T_CMD_SET_PARAM:
  70                 s921_isdb_set_parameters(dev, data);
  71                 break;
  72         case ISDB_T_CMD_TUNE:
  73                 s921_isdb_tune(dev, data);
  74                 break;
  75         case ISDB_T_CMD_GET_STATUS:
  76                 s921_isdb_get_status(dev, data);
  77                 break;
  78         default:
  79                 printk("unhandled command\n");
  80                 return -EINVAL;
  81         }
  82         return 0;
  83 }
  84
  85 static int s921_isdb_init(struct s921_isdb_t *dev) {
  86         unsigned int i;
  87         unsigned int ret;
  88         printk("isdb_init\n");
  89         for (i = 0; i < sizeof(init_table); i+=2) {
  90                 ret = dev->i2c_write(dev->priv_dev, init_table[i], init_table[i+1]);
  91                 if (ret != 0) {
  92                         printk("i2c write failed\n");
  93                         return ret;
  94                 }
  95         }
  96         return 0;
  97 }
  98
  99 static int s921_isdb_set_parameters(struct s921_isdb_t *dev, struct s921_isdb_t_transmission_mode_params *params) {
 100
 101         int ret;
 102         /* auto is sufficient for now, lateron this should be reflected in an extra interface */
 103
 104
 105
 106         ret = dev->i2c_write(dev->priv_dev, 0xb0, 0xa0); //mod_b2);
 107         ret = dev->i2c_write(dev->priv_dev, 0xb2, 0x3d); //mod_b2);
 108
 109         if (ret < 0)
 110                 return -EINVAL;
 111
 112         ret = dev->i2c_write(dev->priv_dev, 0xb3, 0x25); //mod_b3);
 113         if (ret < 0)
 114                 return -EINVAL;
 115
 116         ret = dev->i2c_write(dev->priv_dev, 0xb4, 0x8b); //mod_b4);
 117         if (ret < 0)
 118                 return -EINVAL;
 119
 120         ret = dev->i2c_write(dev->priv_dev, 0xb5, 0x4b); //mod_b5);
 121         if (ret < 0)
 122                 return -EINVAL;
 123
 124         ret = dev->i2c_write(dev->priv_dev, 0xb6, 0x3f); //mod_b6);
 125         if (ret < 0)
 126                 return -EINVAL;
 127
 128         ret = dev->i2c_write(dev->priv_dev, 0xb7, 0x3f); //mod_b7);
 129         if (ret < 0)
 130                 return -EINVAL;
 131
 132         return E_OK;
 133 }
 134
 135 static int s921_isdb_tune(struct s921_isdb_t *dev, struct s921_isdb_t_tune_params *params) {
 136
 137         int ret;
 138         int index;
 139
 140         index = (params->frequency - 473143000)/6000000;
 141
 142         if (index > 48) {
 143                 return -EINVAL;
 144         }
 145
 146         dev->i2c_write(dev->priv_dev, 0x47, 0x60);
 147
 148         ret = dev->i2c_write(dev->priv_dev, 0x68, 0x00);
 149         if (ret < 0)
 150                 return -EINVAL;
 151
 152         ret = dev->i2c_write(dev->priv_dev, 0x69, 0x89);
 153         if (ret < 0)
 154                 return -EINVAL;
 155
 156         ret = dev->i2c_write(dev->priv_dev, 0xf0, 0x48);
 157         if (ret < 0)
 158                 return -EINVAL;
 159
 160         ret = dev->i2c_write(dev->priv_dev, 0xf1, 0x19);
 161         if (ret < 0)
 162                 return -EINVAL;
 163
 164         ret = dev->i2c_write(dev->priv_dev, 0xf2, c_table[index*3]);
 165         if (ret < 0)
 166                 return -EINVAL;
 167
 168         ret = dev->i2c_write(dev->priv_dev, 0xf3, c_table[index*3+1]);
 169         if (ret < 0)
 170                 return -EINVAL;
 171
 172         ret = dev->i2c_write(dev->priv_dev, 0xf4, c_table[index*3+2]);
 173         if (ret < 0)
 174                 return -EINVAL;
 175
 176         ret = dev->i2c_write(dev->priv_dev, 0xf5, 0xae);
 177         if (ret < 0)
 178                 return -EINVAL;
 179
 180         ret = dev->i2c_write(dev->priv_dev, 0xf6, 0xb7);
 181         if (ret < 0)
 182                 return -EINVAL;
 183
 184         ret = dev->i2c_write(dev->priv_dev, 0xf7, 0xba);
 185         if (ret < 0)
 186                 return -EINVAL;
 187
 188         ret = dev->i2c_write(dev->priv_dev, 0xf8, 0xd7);
 189         if (ret < 0)
 190                 return -EINVAL;
 191
 192         ret = dev->i2c_write(dev->priv_dev, 0x68, 0x0a);
 193         if (ret < 0)
 194                 return -EINVAL;
 195
 196         ret = dev->i2c_write(dev->priv_dev, 0x69, 0x09);
 197         if (ret < 0)
 198                 return -EINVAL;
 199
 200         dev->i2c_write(dev->priv_dev, 0x01, 0x40);
 201         return 0;
 202 }
 203
 204 static int s921_isdb_get_status(struct s921_isdb_t *dev, void *data) {
 205         unsigned int *ret = (unsigned int*)data;
 206         u8 ifagc_dt;
 207         u8 rfagc_dt;
 208
 209         mdelay(10);
 210         ifagc_dt = dev->i2c_read(dev->priv_dev, 0x81);
 211         rfagc_dt = dev->i2c_read(dev->priv_dev, 0x82);
 212         if (rfagc_dt == 0x40) {
 213                 *ret = 1;
 214         }
 215         return 0;
 216 }