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