128 lines
4.0 KiB
C
128 lines
4.0 KiB
C
/*-
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* Base driver module for Toshiba T6963 based LCD displays ver 2.2
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* ( ver 2.* is not at all compatible to 1.* versions!)
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*
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* Parts of this file are based on the kernel driver by
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* Alexander Frink <Alexander.Frink@Uni-Mainz.DE>
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*
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* This file is released under the GNU General Public License. Refer to the
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* COPYING file distributed with this package.
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*
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* Copyright (c) 2001 Manuel Stahl <mythos@xmythos.de>
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*/
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#ifndef T6963_H
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#define T6963_H
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#define DEFAULT_CELL_WIDTH 6
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#define DEFAULT_CELL_HEIGHT 8
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#define DEFAULT_SIZE "20x6"
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#define DEFAULT_PORT 0x378
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/** Configure LPT port for bidirectional input */
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#define T6963_DATAIN(p) port_out(T6963_CONTROL_PORT(p), port_in(T6963_CONTROL_PORT(p)) | 0x20)
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/** Configure LPT port for bidirectional output */
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#define T6963_DATAOUT(p) port_out(T6963_CONTROL_PORT(p), port_in(T6963_CONTROL_PORT(p)) & 0xdf)
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/* RAM layout base addresses (for 64 KB RAM) */
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/*
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* FIXME: Those addresses are fine for 64 KB RAM. If the display has less,
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* these values need to be adjusted by the user. It should do no harm setting
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* these for 8 KB RAM.
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*/
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#define TEXT_BASE 0x0000
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#define ATTRIB_BASE 0x7000
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#define CHARGEN_BASE 0xF000
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/* 'Registers setting' commands */
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#define SET_CURSOR_POINTER 0x21
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#define SET_OFFSET_REGISTER 0x22
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#define SET_ADDRESS_POINTER 0x24
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/* 'Set control word' commands */
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#define SET_TEXT_HOME_ADDRESS 0x40
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#define SET_TEXT_AREA 0x41
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#define SET_GRAPHIC_HOME_ADDRESS 0x42
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#define SET_GRAPHIC_AREA 0x43
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/* 'Mode set' command and options*/
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#define SET_MODE 0x80
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#define OR_MODE 0x00
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#define EXOR_MODE 0x01
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#define AND_MODE 0x03
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#define ATTRIBUTE_MODE 0x04
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#define INTERNAL_CG 0x00
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#define EXTERNAL_CG 0x08
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/* 'Display mode' command and options */
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#define SET_DISPLAY_MODE 0x90
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#define BLINK_ON 0x01
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#define CURSOR_ON 0x02
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#define TEXT_ON 0x04
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#define GRAPHIC_ON 0x08
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/* 'Cursor pattern select' command */
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#define SET_CURSOR_PATTERN 0xa0
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/* 'Data read/write' commands */
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#define DATA_WRITE_INC 0xc0
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#define DATA_READ_INC 0xc1
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#define DATA_WRITE_DEC 0xc2
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#define DATA_READ_DEC 0xc3
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#define DATA_WRITE 0xc4
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#define DATA_READ 0xc5
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/* 'Data auto read/write' commands */
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#define AUTO_WRITE 0xb0
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#define AUTO_READ 0xb1
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#define AUTO_RESET 0xb
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/* Macros to make port usage more readable */
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#define T6963_DATA_PORT(p) (p)
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#define T6963_STATUS_PORT(p) ((p)+1)
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#define T6963_CONTROL_PORT(p) ((p)+2)
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/* Data types */
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typedef unsigned short u16;
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typedef unsigned char u8;
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/* API functions */
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MODULE_EXPORT int t6963_init (Driver *drvthis);
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MODULE_EXPORT void t6963_close (Driver *drvthis);
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MODULE_EXPORT int t6963_width (Driver *drvthis);
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MODULE_EXPORT int t6963_height (Driver *drvthis);
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MODULE_EXPORT void t6963_clear (Driver *drvthis);
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MODULE_EXPORT void t6963_flush (Driver *drvthis);
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MODULE_EXPORT void t6963_string (Driver *drvthis, int x, int y, const char string[]);
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MODULE_EXPORT void t6963_chr (Driver *drvthis, int x, int y, char c);
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MODULE_EXPORT void t6963_vbar (Driver *drvthis, int x, int y, int len, int promille, int options);
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MODULE_EXPORT void t6963_hbar (Driver *drvthis, int x, int y, int len, int promille, int options);
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MODULE_EXPORT void t6963_num (Driver *drvthis, int x, int num);
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MODULE_EXPORT int t6963_icon (Driver *drvthis, int x, int y, int icon);
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MODULE_EXPORT void t6963_set_char (Driver *drvthis, int n, char *dat);
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/* Internal functions */
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void t6963_graphic_clear (Driver *drvthis, int x1, int y1, int x2, int y2);
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void t6963_set_nchar (Driver *drvthis, int n, unsigned char *dat, int num);
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void t6963_low_set_control(Driver *drvthis, char wr, char ce, char cd, char rd);
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void t6963_low_dsp_ready(Driver *drvthis);
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void t6963_low_data(Driver *drvthis, u8 byte);
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void t6963_low_command (Driver *drvthis, u8 byte);
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void t6963_low_command_byte(Driver *drvthis, u8 cmd, u8 byte);
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void t6963_low_command_2_bytes(Driver *drvthis, u8 cmd, u8 byte1, u8 byte2);
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void t6963_low_command_word(Driver *drvthis, u8 cmd, u16 word);
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void t6963_low_enable_mode (Driver *drvthis, u8 mode);
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void t6963_low_disable_mode (Driver *drvthis, u8 mode);
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void t6963_swap_buffers(Driver *drvthis);
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#endif
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