diff options
Diffstat (limited to 'drv_LCDLinux.h')
| -rw-r--r-- | drv_LCDLinux.h | 118 |
1 files changed, 51 insertions, 67 deletions
diff --git a/drv_LCDLinux.h b/drv_LCDLinux.h index 1a36454..c7c7e71 100644 --- a/drv_LCDLinux.h +++ b/drv_LCDLinux.h @@ -1,10 +1,11 @@ -/* lcd.h +/* hd44780.h * - * $Id: drv_LCDLinux.h,v 1.5 2005/06/15 05:24:35 reinelt Exp $ + * $Id: drv_LCDLinux.h,v 1.6 2005/08/27 07:02:25 reinelt Exp $ * - * LCD driver for HD44780 compatible displays connected to the parallel port. + * LCD-Linux: + * Driver for HD44780 compatible displays connected to the parallel port. * - * External interface header file. + * HD44780 header file. * * Copyright (C) 2004, 2005 Mattia Jona-Lasinio (mjona@users.sourceforge.net) * @@ -24,83 +25,66 @@ * */ -#ifndef LCD_LINUX_H -#define LCD_LINUX_H +#ifndef HD44780_H +#define HD44780_H -#ifndef HD44780_MAIN -#warning -#warning LCD-Linux is still in development stage and -#warning aims at speed and optimization. For these -#warning reasons there is no guarantee of backward -#warning compatibility between different LCD-Linux -#warning versions. Be sure to use the lcd-linux.h -#warning file of the same version as the module. -#warning -#endif +#include <linux/lcd-linux.h> -#define LCD_LINUX_VERSION "0.8.9-CVS" /* Version number */ +#define HD44780_VERSION "0.9.0" /* Version number */ +#define HD44780_STRING "hd44780" -#define LCD_MAJOR 120 /* Major number for this device - * Set this to 0 for dynamic allocation - */ -#include <linux/types.h> - -struct lcd_driver { - /* Hardware */ - unsigned short io; /* Parport base address */ - unsigned short flags; /* Flags (see Documentation) */ +/* IOCTLs */ +#include <asm/ioctl.h> +#define IOCTL_RAW_CMD _IOW(LCD_MAJOR, 0, unsigned char *) - /* Display geometry */ - unsigned short num_cntr; /* Number of available controllers */ - unsigned short cntr_rows; /* Rows per controller */ - unsigned short disp_cols; /* Columns */ - unsigned short frames; /* Framebuffer frames */ +/* flags */ +#define HD44780_CHECK_BF 0x0001 /* Do busy flag checking */ +#define HD44780_4BITS_BUS 0x0002 /* Set the bus length to 4 bits */ +#define HD44780_5X10_FONT 0x0004 /* Use 5x10 dots fonts */ - unsigned short tabstop; /* Length of tab character */ -}; -/* IOCTLs */ -#include <asm/ioctl.h> -#define IOCTL_SET_PARAM _IOW(LCD_MAJOR, 0, struct lcd_driver *) -#define IOCTL_GET_PARAM _IOR(LCD_MAJOR, 1, struct lcd_driver *) -#define IOCTL_RAW_CMD _IOW(LCD_MAJOR, 2, unsigned char *) -#define IOCTL_RESET_CHARMAP _IOW(LCD_MAJOR, 3, void *) -#define IOCTL_SAVE_CHARMAP _IOW(LCD_MAJOR, 4, void *) -#define IOCTL_RESTORE_CHARMAP _IOW(LCD_MAJOR, 5, void *) -#define IOCTL_SWAP_CHARMAP _IOW(LCD_MAJOR, 6, void *) -#define LCD_CHECK_BF 0x0001 /* Do busy flag checking */ -#define LCD_CONSOLE 0x0002 /* Enable the console support */ -#define LCD_4BITS_BUS 0x0004 /* Set the bus length to 4 bits */ -#define LCD_5X10_FONT 0x0008 /* Use 5x10 dots fonts */ +/*** HD44780 Command Set ***/ +/* Clear Display*/ +#define CLR_DISP 0x01 /* Clear entire display; cursor at row 0, column 0 */ +/* Return Home */ +#define RET_HOME 0x02 /* Cursor at row 0, column 0; display content doesn't change */ -#ifdef __KERNEL__ /* The rest is for kernel only */ +/* Entry Mode Set */ +#define DISP_SHIFT_ON 0x05 /* Shift display, not cursor after data write */ +#define DISP_SHIFT_OFF 0x04 /* Shift cursor, not display after data write */ +#define CURS_INC 0x06 /* Shift on the right after data read/write */ +#define CURS_DEC 0x04 /* Shift on the left after data read/write */ -#include <linux/version.h> +/* Display on/off Control */ +#define BLINK_ON 0x09 /* Cursor blinking on */ +#define BLINK_OFF 0x08 /* Cursor blinking off */ +#define CURS_ON 0x0a /* Display Cursor */ +#define CURS_OFF 0x08 /* Hide Cursor */ +#define DISP_ON 0x0c /* Turn on display updating */ +#define DISP_OFF 0x08 /* Freeze display content */ -#ifndef KERNEL_VERSION -#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c)) -#endif +/* Cursor or Display Shift */ +#define SHIFT_RIGHT 0x14 /* Shift on the right */ +#define SHIFT_LEFT 0x10 /* Shift on the left */ +#define SHIFT_DISP 0x18 /* Shift display */ +#define SHIFT_CURS 0x10 /* Shift cursor */ -#ifndef LINUX_VERSION_CODE -#error - LINUX_VERSION_CODE undefined. -#endif +/* Function Set */ +#define FONT_5X10 0x24 /* Select 5x10 dots font */ +#define FONT_5X8 0x20 /* Select 5x8 dots font */ +#define DISP_2_LINES 0x28 /* Select 2 lines display (only 5x8 font allowed) */ +#define DISP_1_LINE 0x20 /* Select 1 line display */ +#define BUS_8_BITS 0x30 /* Set 8 data bits */ +#define BUS_4_BITS 0x20 /* Set 4 data bits */ -/* External interface */ -int lcd_init(struct lcd_driver *); -void lcd_exit(void); -int lcd_ioctl(unsigned int, void *); -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0) -ssize_t lcd_write(const char *, size_t, unsigned int); -ssize_t lcd_read(char *, size_t, unsigned int); -#else -int lcd_write(const char *, int, unsigned int); -int lcd_read(char *, int, unsigned int); -#endif +/* Set CGRAM Address */ +#define CGRAM_IO 0x40 /* Access the CGRAM */ -#endif /* __KERNEL__ */ +/* Set DDRAM Address */ +#define DDRAM_IO 0x80 /* Access the DDRAM */ -#endif /* External interface included */ +#endif /* HD44780 included */ |