/* Driver for the SAA5246A or SAA5281 Teletext (=Videotext) decoder chips from Philips. Copyright (C) 2004 Michael Geng (linux@MichaelGeng.de) This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #ifndef __SAA5246A_H__ #define __SAA5246A_H__ #define MAJOR_VERSION 1 /* driver major version number */ #define MINOR_VERSION 8 /* driver minor version number */ #define IF_NAME "SAA5246A" #define I2C_ADDRESS 17 /* Number of DAUs = number of pages that can be searched at the same time. */ #define NUM_DAUS 4 #define NUM_ROWS_PER_PAGE 40 /* first column is 0 (not 1) */ #define POS_TIME_START 32 #define POS_TIME_END 39 #define POS_HEADER_START 7 #define POS_HEADER_END 31 /* Returns TRUE if the part of the videotext page described with req contains (at least parts of) the time field */ #define REQ_CONTAINS_TIME(p_req) \ ((p_req)->start <= POS_TIME_END && \ (p_req)->end >= POS_TIME_START) /* Returns TRUE if the part of the videotext page described with req contains (at least parts of) the page header */ #define REQ_CONTAINS_HEADER(p_req) \ ((p_req)->start <= POS_HEADER_END && \ (p_req)->end >= POS_HEADER_START) #ifndef FALSE #define FALSE 0 #define TRUE 1 #endif /*****************************************************************************/ /* Mode register numbers of the SAA5246A */ /*****************************************************************************/ #define SAA5246A_REGISTER_R0 0 #define SAA5246A_REGISTER_R1 1 #define SAA5246A_REGISTER_R2 2 #define SAA5246A_REGISTER_R3 3 #define SAA5246A_REGISTER_R4 4 #define SAA5246A_REGISTER_R5 5 #define SAA5246A_REGISTER_R6 6 #define SAA5246A_REGISTER_R7 7 #define SAA5246A_REGISTER_R8 8 #define SAA5246A_REGISTER_R9 9 #define SAA5246A_REGISTER_R10 10 #define SAA5246A_REGISTER_R11 11 #define SAA5246A_REGISTER_R11B 11 /* SAA5246A mode registers often autoincrement to the next register. Therefore we use variable argument lists. The following macro indicates the end of a command list. */ #define COMMAND_END (- 1) /*****************************************************************************/ /* Contents of the mode registers of the SAA5246A */ /*****************************************************************************/ /* Register R0 (Advanced Control) */ #define R0_SELECT_R11 0x00 #define R0_SELECT_R11B 0x01 #define R0_PLL_TIME_CONSTANT_LONG 0x00 #define R0_PLL_TIME_CONSTANT_SHORT 0x02 #define R0_ENABLE_nODD_EVEN_OUTPUT 0x00 #define R0_DISABLE_nODD_EVEN_OUTPUT 0x04 #define R0_ENABLE_HDR_POLL 0x00 #define R0_DISABLE_HDR_POLL 0x10 #define R0_DO_NOT_FORCE_nODD_EVEN_LOW_IF_PICTURE_DISPLAYED 0x00 #define R0_FORCE_nODD_EVEN_LOW_IF_PICTURE_DISPLAYED 0x20 #define R0_NO_FREE_RUN_PLL 0x00 #define R0_FREE_RUN_PLL 0x40 #define R0_NO_AUTOMATIC_FASTEXT_PROMPT 0x00 #define R0_AUTOMATIC_FASTEXT_PROMPT 0x80 /* Register R1 (Mode) */ #define R1_INTERLACED_312_AND_HALF_312_AND_HALF_LINES 0x00 #define R1_NON_INTERLACED_312_313_LINES 0x01 #define R1_NON_INTERLACED_312_312_LINES 0x02 #define R1_FFB_LEADING_EDGE_IN_FIRST_BROAD_PULSE 0x03 #define R1_FFB_LEADING_EDGE_IN_SECOND_BROAD_PULSE 0x07 #define R1_DEW 0x00 #define R1_FULL_FIELD 0x08 #define R1_EXTENDED_PACKET_DISABLE 0x00 #define R1_EXTENDED_PACKET_ENABLE 0x10 #define R1_DAUS_ALL_ON 0x00 #define R1_DAUS_ALL_OFF 0x20 #define R1_7_BITS_PLUS_PARITY 0x00 #define R1_8_BITS_NO_PARITY 0x40 #define R1_VCS_TO_SCS 0x00 #define R1_NO_VCS_TO_SCS 0x80 /* Register R2 (Page request address) */ #define R2_IN_R3_SELECT_PAGE_HUNDREDS 0x00 #define R2_IN_R3_SELECT_PAGE_TENS 0x01 #define R2_IN_R3_SELECT_PAGE_UNITS 0x02 #define R2_IN_R3_SELECT_HOURS_TENS 0x03 #define R2_IN_R3_SELECT_HOURS_UNITS 0x04 #define R2_IN_R3_SELECT_MINUTES_TENS 0x05 #define R2_IN_R3_SELECT_MINUTES_UNITS 0x06 #define R2_DAU_0 0x00 #define R2_DAU_1 0x10 #define R2_DAU_2 0x20 #define R2_DAU_3 0x30 #define R2_BANK_0 0x00 #define R2_BANK 1 0x40 #define R2_HAMMING_CHECK_ON 0x80 #define R2_HAMMING_CHECK_OFF 0x00 /* Register R3 (Page request data) */ #define R3_PAGE_HUNDREDS_0 0x00 #define R3_PAGE_HUNDREDS_1 0x01 #define R3_PAGE_HUNDREDS_2 0x02 #define R3_PAGE_HUNDREDS_3 0x03 #define R3_PAGE_HUNDREDS_4 0x04 #define R3_PAGE_HUNDREDS_5 0x05 #define R3_PAGE_HUNDREDS_6 0x06 #define R3_PAGE_HUNDREDS_7 0x07 #define R3_HOLD_PAGE 0x00 #define R3_UPDATE_PAGE 0x08 #define R3_PAGE_HUNDREDS_DO_NOT_CARE 0x00 #define R3_PAGE_HUNDREDS_DO_CARE 0x10 #define R3_PAGE_TENS_DO_NOT_CARE 0x00 #define R3_PAGE_TENS_DO_CARE 0x10 #define R3_PAGE_UNITS_DO_NOT_CARE 0x00 #define R3_PAGE_UNITS_DO_CARE 0x10 #define R3_HOURS_TENS_DO_NOT_CARE 0x00 #define R3_HOURS_TENS_DO_CARE 0x10 #define R3_HOURS_UNITS_DO_NOT_CARE 0x00 #define R3_HOURS_UNITS_DO_CARE 0x10 #define R3_MINUTES_TENS_DO_NOT_CARE 0x00 #define R3_MINUTES_TENS_DO_CARE 0x10 #define R3_MINUTES_UNITS_DO_NOT_CARE 0x00 #define R3_MINUTES_UNITS_DO_CARE 0x10 /* Register R4 (Display chapter) */ #define R4_DISPLAY_PAGE_0 0x00 #define R4_DISPLAY_PAGE_1 0x01 #define R4_DISPLAY_PAGE_2 0x02 #define R4_DISPLAY_PAGE_3 0x03 #define R4_DISPLAY_PAGE_4 0x04 #define R4_DISPLAY_PAGE_5 0x05 #define R4_DISPLAY_PAGE_6 0x06 #define R4_DISPLAY_PAGE_7 0x07 /* Register R5 (Normal display control) */ #define R5_PICTURE_INSIDE_BOXING_OFF 0x00 #define R5_PICTURE_INSIDE_BOXING_ON 0x01 #define R5_PICTURE_OUTSIDE_BOXING_OFF 0x00 #define R5_PICTURE_OUTSIDE_BOXING_ON 0x02 #define R5_TEXT_INSIDE_BOXING_OFF 0x00 #define R5_TEXT_INSIDE_BOXING_ON 0x04 #define R5_TEXT_OUTSIDE_BOXING_OFF 0x00 #define R5_TEXT_OUTSIDE_BOXING_ON 0x08 #define R5_CONTRAST_REDUCTION_INSIDE_BOXING_OFF 0x00 #define R5_CONTRAST_REDUCTION_INSIDE_BOXING_ON 0x10 #define R5_CONTRAST_REDUCTION_OUTSIDE_BOXING_OFF 0x00 #define R5_CONTRAST_REDUCTION_OUTSIDE_BOXING_ON 0x20 #define R5_BACKGROUND_COLOR_INSIDE_BOXING_OFF 0x00 #define R5_BACKGROUND_COLOR_INSIDE_BOXING_ON 0x40 #define R5_BACKGROUND_COLOR_OUTSIDE_BOXING_OFF 0x00 #define R5_BACKGROUND_COLOR_OUTSIDE_BOXING_ON 0x80 /* Register R6 (Newsflash display) */ #define R6_NEWSFLASH_PICTURE_INSIDE_BOXING_OFF 0x00 #define R6_NEWSFLASH_PICTURE_INSIDE_BOXING_ON 0x01 #define R6_NEWSFLASH_PICTURE_OUTSIDE_BOXING_OFF 0x00 #define R6_NEWSFLASH_PICTURE_OUTSIDE_BOXING_ON 0x02 #define R6_NEWSFLASH_TEXT_INSIDE_BOXING_OFF 0x00 #define R6_NEWSFLASH_TEXT_INSIDE_BOXING_ON 0x04 #define R6_NEWSFLASH_TEXT_OUTSIDE_BOXING_OFF 0x00 #define R6_NEWSFLASH_TEXT_OUTSIDE_BOXING_ON 0x08 #define R6_NEWSFLASH_CONTRAST_REDUCTION_INSIDE_BOXING_OFF 0x00 #define R6_NEWSFLASH_CONTRAST_REDUCTION_INSIDE_BOXING_ON 0x10 #define R6_NEWSFLASH_CONTRAST_REDUCTION_OUTSIDE_BOXING_OFF 0x00 #define R6_NEWSFLASH_CONTRAST_REDUCTION_OUTSIDE_BOXING_ON 0x20 #define R6_NEWSFLASH_BACKGROUND_COLOR_INSIDE_BOXING_OFF 0x00 #define R6_NEWSFLASH_BACKGROUND_COLOR_INSIDE_BOXING_ON 0x40 #define R6_NEWSFLASH_BACKGROUND_COLOR_OUTSIDE_BOXING_OFF 0x00 #define R6_NEWSFLASH_BACKGROUND_COLOR_OUTSIDE_BOXING_ON 0x80 /* Register R7 (Display mode) */ #define R7_BOX_OFF_ROW_0 0x00 #define R7_BOX_ON_ROW_0 0x01 #define R7_BOX_OFF_ROW_1_TO_23 0x00 #define R7_BOX_ON_ROW_1_TO_23 0x02 #define R7_BOX_OFF_ROW_24 0x00 #define R7_BOX_ON_ROW_24 0x04 #define R7_SINGLE_HEIGHT 0x00 #define R7_DOUBLE_HEIGHT 0x08 #define R7_TOP_HALF 0x00 #define R7_BOTTOM_HALF 0x10 #define R7_REVEAL_OFF 0x00 #define R7_REVEAL_ON 0x20 #define R7_CURSER_OFF 0x00 #define R7_CURSER_ON 0x40 #define R7_STATUS_BOTTOM 0x00 #define R7_STATUS_TOP 0x80 /* Register R8 (Active chapter) */ #define R8_ACTIVE_CHAPTER_0 0x00 #define R8_ACTIVE_CHAPTER_1 0x01 #define R8_ACTIVE_CHAPTER_2 0x02 #define R8_ACTIVE_CHAPTER_3 0x03 #define R8_ACTIVE_CHAPTER_4 0x04 #define R8_ACTIVE_CHAPTER_5 0x05 #define R8_ACTIVE_CHAPTER_6 0x06 #define R8_ACTIVE_CHAPTER_7 0x07 #define R8_CLEAR_MEMORY 0x08 #define R8_DO_NOT_CLEAR_MEMORY 0x00 /* Register R9 (Curser row) */ #define R9_CURSER_ROW_0 0x00 #define R9_CURSER_ROW_1 0x01 #define R9_CURSER_ROW_2 0x02 #define R9_CURSER_ROW_25 0x19 /* Register R10 (Curser column) */ #define R10_CURSER_COLUMN_0 0x00 #define R10_CURSER_COLUMN_6 0x06 #define R10_CURSER_COLUMN_8 0x08 /*****************************************************************************/ /* Row 25 control data in column 0 to 9 */ /*****************************************************************************/ #define ROW25_COLUMN0_PAGE_UNITS 0x0F #define ROW25_COLUMN1_PAGE_TENS 0x0F #define ROW25_COLUMN2_MINUTES_UNITS 0x0F #define ROW25_COLUMN3_MINUTES_TENS 0x07 #define ROW25_COLUMN3_DELETE_PAGE 0x08 #define ROW25_COLUMN4_HOUR_UNITS 0x0F #define ROW25_COLUMN5_HOUR_TENS 0x03 #define ROW25_COLUMN5_INSERT_HEADLINE 0x04 #define ROW25_COLUMN5_INSERT_SUBTITLE 0x08 #define ROW25_COLUMN6_SUPPRESS_HEADER 0x01 #define ROW25_COLUMN6_UPDATE_PAGE 0x02 #define ROW25_COLUMN6_INTERRUPTED_SEQUENCE 0x04 #define ROW25_COLUMN6_SUPPRESS_DISPLAY 0x08 #define ROW25_COLUMN7_SERIAL_MODE 0x01 #define ROW25_COLUMN7_CHARACTER_SET 0x0E #define ROW25_COLUMN8_PAGE_HUNDREDS 0x07 #define ROW25_COLUMN8_PAGE_NOT_FOUND 0x10 #define ROW25_COLUMN9_PAGE_BEING_LOOKED_FOR 0x20 #define ROW25_COLUMN0_TO_7_HAMMING_ERROR 0x10 /*****************************************************************************/ /* Helper macros for extracting page, hour and minute digits */ /*****************************************************************************/ /* BYTE_POS 0 is at row 0, column 0, BYTE_POS 1 is at row 0, column 1, BYTE_POS 40 is at row 1, column 0, (with NUM_ROWS_PER_PAGE = 40) BYTE_POS 41 is at row 1, column 1, (with NUM_ROWS_PER_PAGE = 40), ... */ #define ROW(BYTE_POS) (BYTE_POS / NUM_ROWS_PER_PAGE) #define COLUMN(BYTE_POS) (BYTE_POS % NUM_ROWS_PER_PAGE) /*****************************************************************************/ /* Helper macros for extracting page, hour and minute digits */ /*****************************************************************************/ /* Macros for extracting hundreds, tens and units of a page number which must be in the range 0 ... 0x799. Note that page is coded in hexadecimal, i.e. 0x123 means page 123. page 0x.. means page 8.. */ #define HUNDREDS_OF_PAGE(page) (((page) / 0x100) & 0x7) #define TENS_OF_PAGE(page) (((page) / 0x10) & 0xF) #define UNITS_OF_PAGE(page) ((page) & 0xF) /* Macros for extracting tens and units of a hour information which must be in the range 0 ... 0x24. Note that hour is coded in hexadecimal, i.e. 0x12 means 12 hours */ #define TENS_OF_HOUR(hour) ((hour) / 0x10) #define UNITS_OF_HOUR(hour) ((hour) & 0xF) /* Macros for extracting tens and units of a minute information which must be in the range 0 ... 0x59. Note that minute is coded in hexadecimal, i.e. 0x12 means 12 minutes */ #define TENS_OF_MINUTE(minute) ((minute) / 0x10) #define UNITS_OF_MINUTE(minute) ((minute) & 0xF) #define HOUR_MAX 0x23 #define MINUTE_MAX 0x59 #define PAGE_MAX 0x8FF #endif /* __SAA5246A_H__ */