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   1 /*
   2    Driver for the SAA5246A or SAA5281 Teletext (=Videotext) decoder chips from
   3    Philips.
   4
   5    Copyright (C) 2004 Michael Geng (linux@MichaelGeng.de)
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20
  21  */
  22 #ifndef __SAA5246A_H__
  23 #define __SAA5246A_H__
  24
  25 #define MAJOR_VERSION 1         /* driver major version number */
  26 #define MINOR_VERSION 8         /* driver minor version number */
  27
  28 #define IF_NAME "SAA5246A"
  29
  30 #define I2C_ADDRESS 17
  31
  32 /* Number of DAUs = number of pages that can be searched at the same time. */
  33 #define NUM_DAUS 4
  34
  35 #define NUM_ROWS_PER_PAGE 40
  36
  37 /* first column is 0 (not 1) */
  38 #define POS_TIME_START 32
  39 #define POS_TIME_END 39
  40
  41 #define POS_HEADER_START 7
  42 #define POS_HEADER_END 31
  43
  44 /* Returns TRUE if the part of the videotext page described with req contains
  45    (at least parts of) the time field */
  46 #define REQ_CONTAINS_TIME(p_req) \
  47         ((p_req)->start <= POS_TIME_END && \
  48          (p_req)->end   >= POS_TIME_START)
  49
  50 /* Returns TRUE if the part of the videotext page described with req contains
  51    (at least parts of) the page header */
  52 #define REQ_CONTAINS_HEADER(p_req) \
  53         ((p_req)->start <= POS_HEADER_END && \
  54          (p_req)->end   >= POS_HEADER_START)
  55
  56 #ifndef FALSE
  57 #define FALSE 0
  58 #define TRUE 1
  59 #endif
  60
  61 /*****************************************************************************/
  62 /* Mode register numbers of the SAA5246A                                     */
  63 /*****************************************************************************/
  64 #define SAA5246A_REGISTER_R0    0
  65 #define SAA5246A_REGISTER_R1    1
  66 #define SAA5246A_REGISTER_R2    2
  67 #define SAA5246A_REGISTER_R3    3
  68 #define SAA5246A_REGISTER_R4    4
  69 #define SAA5246A_REGISTER_R5    5
  70 #define SAA5246A_REGISTER_R6    6
  71 #define SAA5246A_REGISTER_R7    7
  72 #define SAA5246A_REGISTER_R8    8
  73 #define SAA5246A_REGISTER_R9    9
  74 #define SAA5246A_REGISTER_R10  10
  75 #define SAA5246A_REGISTER_R11  11
  76 #define SAA5246A_REGISTER_R11B 11
  77
  78 /* SAA5246A mode registers often autoincrement to the next register.
  79    Therefore we use variable argument lists. The following macro indicates
  80    the end of a command list. */
  81 #define COMMAND_END (- 1)
  82
  83 /*****************************************************************************/
  84 /* Contents of the mode registers of the SAA5246A                            */
  85 /*****************************************************************************/
  86 /* Register R0 (Advanced Control) */
  87 #define R0_SELECT_R11                                      0x00
  88 #define R0_SELECT_R11B                                     0x01
  89
  90 #define R0_PLL_TIME_CONSTANT_LONG                          0x00
  91 #define R0_PLL_TIME_CONSTANT_SHORT                         0x02
  92
  93 #define R0_ENABLE_nODD_EVEN_OUTPUT                         0x00
  94 #define R0_DISABLE_nODD_EVEN_OUTPUT                        0x04
  95
  96 #define R0_ENABLE_HDR_POLL                                 0x00
  97 #define R0_DISABLE_HDR_POLL                                0x10
  98
  99 #define R0_DO_NOT_FORCE_nODD_EVEN_LOW_IF_PICTURE_DISPLAYED 0x00
 100 #define R0_FORCE_nODD_EVEN_LOW_IF_PICTURE_DISPLAYED        0x20
 101
 102 #define R0_NO_FREE_RUN_PLL                                 0x00
 103 #define R0_FREE_RUN_PLL                                    0x40
 104
 105 #define R0_NO_AUTOMATIC_FASTEXT_PROMPT                     0x00
 106 #define R0_AUTOMATIC_FASTEXT_PROMPT                        0x80
 107
 108 /* Register R1 (Mode) */
 109 #define R1_INTERLACED_312_AND_HALF_312_AND_HALF_LINES      0x00
 110 #define R1_NON_INTERLACED_312_313_LINES                    0x01
 111 #define R1_NON_INTERLACED_312_312_LINES                    0x02
 112 #define R1_FFB_LEADING_EDGE_IN_FIRST_BROAD_PULSE           0x03
 113 #define R1_FFB_LEADING_EDGE_IN_SECOND_BROAD_PULSE          0x07
 114
 115 #define R1_DEW                                             0x00
 116 #define R1_FULL_FIELD                                      0x08
 117
 118 #define R1_EXTENDED_PACKET_DISABLE                         0x00
 119 #define R1_EXTENDED_PACKET_ENABLE                          0x10
 120
 121 #define R1_DAUS_ALL_ON                                     0x00
 122 #define R1_DAUS_ALL_OFF                                    0x20
 123
 124 #define R1_7_BITS_PLUS_PARITY                              0x00
 125 #define R1_8_BITS_NO_PARITY                                0x40
 126
 127 #define R1_VCS_TO_SCS                                      0x00
 128 #define R1_NO_VCS_TO_SCS                                   0x80
 129
 130 /* Register R2 (Page request address) */
 131 #define R2_IN_R3_SELECT_PAGE_HUNDREDS                      0x00
 132 #define R2_IN_R3_SELECT_PAGE_TENS                          0x01
 133 #define R2_IN_R3_SELECT_PAGE_UNITS                         0x02
 134 #define R2_IN_R3_SELECT_HOURS_TENS                         0x03
 135 #define R2_IN_R3_SELECT_HOURS_UNITS                        0x04
 136 #define R2_IN_R3_SELECT_MINUTES_TENS                       0x05
 137 #define R2_IN_R3_SELECT_MINUTES_UNITS                      0x06
 138
 139 #define R2_DAU_0                                           0x00
 140 #define R2_DAU_1                                           0x10
 141 #define R2_DAU_2                                           0x20
 142 #define R2_DAU_3                                           0x30
 143
 144 #define R2_BANK_0                                          0x00
 145 #define R2_BANK 1                                          0x40
 146
 147 #define R2_HAMMING_CHECK_ON                                0x80
 148 #define R2_HAMMING_CHECK_OFF                               0x00
 149
 150 /* Register R3 (Page request data) */
 151 #define R3_PAGE_HUNDREDS_0                                 0x00
 152 #define R3_PAGE_HUNDREDS_1                                 0x01
 153 #define R3_PAGE_HUNDREDS_2                                 0x02
 154 #define R3_PAGE_HUNDREDS_3                                 0x03
 155 #define R3_PAGE_HUNDREDS_4                                 0x04
 156 #define R3_PAGE_HUNDREDS_5                                 0x05
 157 #define R3_PAGE_HUNDREDS_6                                 0x06
 158 #define R3_PAGE_HUNDREDS_7                                 0x07
 159
 160 #define R3_HOLD_PAGE                                       0x00
 161 #define R3_UPDATE_PAGE                                     0x08
 162
 163 #define R3_PAGE_HUNDREDS_DO_NOT_CARE                       0x00
 164 #define R3_PAGE_HUNDREDS_DO_CARE                           0x10
 165
 166 #define R3_PAGE_TENS_DO_NOT_CARE                           0x00
 167 #define R3_PAGE_TENS_DO_CARE                               0x10
 168
 169 #define R3_PAGE_UNITS_DO_NOT_CARE                          0x00
 170 #define R3_PAGE_UNITS_DO_CARE                              0x10
 171
 172 #define R3_HOURS_TENS_DO_NOT_CARE                          0x00
 173 #define R3_HOURS_TENS_DO_CARE                              0x10
 174
 175 #define R3_HOURS_UNITS_DO_NOT_CARE                         0x00
 176 #define R3_HOURS_UNITS_DO_CARE                             0x10
 177
 178 #define R3_MINUTES_TENS_DO_NOT_CARE                        0x00
 179 #define R3_MINUTES_TENS_DO_CARE                            0x10
 180
 181 #define R3_MINUTES_UNITS_DO_NOT_CARE                       0x00
 182 #define R3_MINUTES_UNITS_DO_CARE                           0x10
 183
 184 /* Register R4 (Display chapter) */
 185 #define R4_DISPLAY_PAGE_0                                  0x00
 186 #define R4_DISPLAY_PAGE_1                                  0x01
 187 #define R4_DISPLAY_PAGE_2                                  0x02
 188 #define R4_DISPLAY_PAGE_3                                  0x03
 189 #define R4_DISPLAY_PAGE_4                                  0x04
 190 #define R4_DISPLAY_PAGE_5                                  0x05
 191 #define R4_DISPLAY_PAGE_6                                  0x06
 192 #define R4_DISPLAY_PAGE_7                                  0x07
 193
 194 /* Register R5 (Normal display control) */
 195 #define R5_PICTURE_INSIDE_BOXING_OFF                       0x00
 196 #define R5_PICTURE_INSIDE_BOXING_ON                        0x01
 197
 198 #define R5_PICTURE_OUTSIDE_BOXING_OFF                      0x00
 199 #define R5_PICTURE_OUTSIDE_BOXING_ON                       0x02
 200
 201 #define R5_TEXT_INSIDE_BOXING_OFF                          0x00
 202 #define R5_TEXT_INSIDE_BOXING_ON                           0x04
 203
 204 #define R5_TEXT_OUTSIDE_BOXING_OFF                         0x00
 205 #define R5_TEXT_OUTSIDE_BOXING_ON                          0x08
 206
 207 #define R5_CONTRAST_REDUCTION_INSIDE_BOXING_OFF            0x00
 208 #define R5_CONTRAST_REDUCTION_INSIDE_BOXING_ON             0x10
 209
 210 #define R5_CONTRAST_REDUCTION_OUTSIDE_BOXING_OFF           0x00
 211 #define R5_CONTRAST_REDUCTION_OUTSIDE_BOXING_ON            0x20
 212
 213 #define R5_BACKGROUND_COLOR_INSIDE_BOXING_OFF              0x00
 214 #define R5_BACKGROUND_COLOR_INSIDE_BOXING_ON               0x40
 215
 216 #define R5_BACKGROUND_COLOR_OUTSIDE_BOXING_OFF             0x00
 217 #define R5_BACKGROUND_COLOR_OUTSIDE_BOXING_ON              0x80
 218
 219 /* Register R6 (Newsflash display) */
 220 #define R6_NEWSFLASH_PICTURE_INSIDE_BOXING_OFF             0x00
 221 #define R6_NEWSFLASH_PICTURE_INSIDE_BOXING_ON              0x01
 222
 223 #define R6_NEWSFLASH_PICTURE_OUTSIDE_BOXING_OFF            0x00
 224 #define R6_NEWSFLASH_PICTURE_OUTSIDE_BOXING_ON             0x02
 225
 226 #define R6_NEWSFLASH_TEXT_INSIDE_BOXING_OFF                0x00
 227 #define R6_NEWSFLASH_TEXT_INSIDE_BOXING_ON                 0x04
 228
 229 #define R6_NEWSFLASH_TEXT_OUTSIDE_BOXING_OFF               0x00
 230 #define R6_NEWSFLASH_TEXT_OUTSIDE_BOXING_ON                0x08
 231
 232 #define R6_NEWSFLASH_CONTRAST_REDUCTION_INSIDE_BOXING_OFF  0x00
 233 #define R6_NEWSFLASH_CONTRAST_REDUCTION_INSIDE_BOXING_ON   0x10
 234
 235 #define R6_NEWSFLASH_CONTRAST_REDUCTION_OUTSIDE_BOXING_OFF 0x00
 236 #define R6_NEWSFLASH_CONTRAST_REDUCTION_OUTSIDE_BOXING_ON  0x20
 237
 238 #define R6_NEWSFLASH_BACKGROUND_COLOR_INSIDE_BOXING_OFF    0x00
 239 #define R6_NEWSFLASH_BACKGROUND_COLOR_INSIDE_BOXING_ON     0x40
 240
 241 #define R6_NEWSFLASH_BACKGROUND_COLOR_OUTSIDE_BOXING_OFF   0x00
 242 #define R6_NEWSFLASH_BACKGROUND_COLOR_OUTSIDE_BOXING_ON    0x80
 243
 244 /* Register R7 (Display mode) */
 245 #define R7_BOX_OFF_ROW_0                                   0x00
 246 #define R7_BOX_ON_ROW_0                                    0x01
 247
 248 #define R7_BOX_OFF_ROW_1_TO_23                             0x00
 249 #define R7_BOX_ON_ROW_1_TO_23                              0x02
 250
 251 #define R7_BOX_OFF_ROW_24                                  0x00
 252 #define R7_BOX_ON_ROW_24                                   0x04
 253
 254 #define R7_SINGLE_HEIGHT                                   0x00
 255 #define R7_DOUBLE_HEIGHT                                   0x08
 256
 257 #define R7_TOP_HALF                                        0x00
 258 #define R7_BOTTOM_HALF                                     0x10
 259
 260 #define R7_REVEAL_OFF                                      0x00
 261 #define R7_REVEAL_ON                                       0x20
 262
 263 #define R7_CURSER_OFF                                      0x00
 264 #define R7_CURSER_ON                                       0x40
 265
 266 #define R7_STATUS_BOTTOM                                   0x00
 267 #define R7_STATUS_TOP                                      0x80
 268
 269 /* Register R8 (Active chapter) */
 270 #define R8_ACTIVE_CHAPTER_0                                0x00
 271 #define R8_ACTIVE_CHAPTER_1                                0x01
 272 #define R8_ACTIVE_CHAPTER_2                                0x02
 273 #define R8_ACTIVE_CHAPTER_3                                0x03
 274 #define R8_ACTIVE_CHAPTER_4                                0x04
 275 #define R8_ACTIVE_CHAPTER_5                                0x05
 276 #define R8_ACTIVE_CHAPTER_6                                0x06
 277 #define R8_ACTIVE_CHAPTER_7                                0x07
 278
 279 #define R8_CLEAR_MEMORY                                    0x08
 280 #define R8_DO_NOT_CLEAR_MEMORY                             0x00
 281
 282 /* Register R9 (Curser row) */
 283 #define R9_CURSER_ROW_0                                    0x00
 284 #define R9_CURSER_ROW_1                                    0x01
 285 #define R9_CURSER_ROW_2                                    0x02
 286 #define R9_CURSER_ROW_25                                   0x19
 287
 288 /* Register R10 (Curser column) */
 289 #define R10_CURSER_COLUMN_0                                0x00
 290 #define R10_CURSER_COLUMN_6                                0x06
 291 #define R10_CURSER_COLUMN_8                                0x08
 292
 293 /*****************************************************************************/
 294 /* Row 25 control data in column 0 to 9                                      */
 295 /*****************************************************************************/
 296 #define ROW25_COLUMN0_PAGE_UNITS                           0x0F
 297
 298 #define ROW25_COLUMN1_PAGE_TENS                            0x0F
 299
 300 #define ROW25_COLUMN2_MINUTES_UNITS                        0x0F
 301
 302 #define ROW25_COLUMN3_MINUTES_TENS                         0x07
 303 #define ROW25_COLUMN3_DELETE_PAGE                          0x08
 304
 305 #define ROW25_COLUMN4_HOUR_UNITS                           0x0F
 306
 307 #define ROW25_COLUMN5_HOUR_TENS                            0x03
 308 #define ROW25_COLUMN5_INSERT_HEADLINE                      0x04
 309 #define ROW25_COLUMN5_INSERT_SUBTITLE                      0x08
 310
 311 #define ROW25_COLUMN6_SUPPRESS_HEADER                      0x01
 312 #define ROW25_COLUMN6_UPDATE_PAGE                          0x02
 313 #define ROW25_COLUMN6_INTERRUPTED_SEQUENCE                 0x04
 314 #define ROW25_COLUMN6_SUPPRESS_DISPLAY                     0x08
 315
 316 #define ROW25_COLUMN7_SERIAL_MODE                          0x01
 317 #define ROW25_COLUMN7_CHARACTER_SET                        0x0E
 318
 319 #define ROW25_COLUMN8_PAGE_HUNDREDS                        0x07
 320 #define ROW25_COLUMN8_PAGE_NOT_FOUND                       0x10
 321
 322 #define ROW25_COLUMN9_PAGE_BEING_LOOKED_FOR                0x20
 323
 324 #define ROW25_COLUMN0_TO_7_HAMMING_ERROR                   0x10
 325
 326 /*****************************************************************************/
 327 /* Helper macros for extracting page, hour and minute digits                 */
 328 /*****************************************************************************/
 329 /* BYTE_POS  0 is at row 0, column 0,
 330    BYTE_POS  1 is at row 0, column 1,
 331    BYTE_POS 40 is at row 1, column 0, (with NUM_ROWS_PER_PAGE = 40)
 332    BYTE_POS 41 is at row 1, column 1, (with NUM_ROWS_PER_PAGE = 40),
 333    ... */
 334 #define ROW(BYTE_POS)    (BYTE_POS / NUM_ROWS_PER_PAGE)
 335 #define COLUMN(BYTE_POS) (BYTE_POS % NUM_ROWS_PER_PAGE)
 336
 337 /*****************************************************************************/
 338 /* Helper macros for extracting page, hour and minute digits                 */
 339 /*****************************************************************************/
 340 /* Macros for extracting hundreds, tens and units of a page number which
 341    must be in the range 0 ... 0x799.
 342    Note that page is coded in hexadecimal, i.e. 0x123 means page 123.
 343    page 0x.. means page 8.. */
 344 #define HUNDREDS_OF_PAGE(page) (((page) / 0x100) & 0x7)
 345 #define TENS_OF_PAGE(page)     (((page) / 0x10)  & 0xF)
 346 #define UNITS_OF_PAGE(page)     ((page) & 0xF)
 347
 348 /* Macros for extracting tens and units of a hour information which
 349    must be in the range 0 ... 0x24.
 350    Note that hour is coded in hexadecimal, i.e. 0x12 means 12 hours */
 351 #define TENS_OF_HOUR(hour)  ((hour) / 0x10)
 352 #define UNITS_OF_HOUR(hour) ((hour) & 0xF)
 353
 354 /* Macros for extracting tens and units of a minute information which
 355    must be in the range 0 ... 0x59.
 356    Note that minute is coded in hexadecimal, i.e. 0x12 means 12 minutes */
 357 #define TENS_OF_MINUTE(minute)  ((minute) / 0x10)
 358 #define UNITS_OF_MINUTE(minute) ((minute) & 0xF)
 359
 360 #define HOUR_MAX   0x23
 361 #define MINUTE_MAX 0x59
 362 #define PAGE_MAX   0x8FF
 363
 364 #endif  /* __SAA5246A_H__ */