linux/drivers/auxdisplay/hd44780_common.c

// SPDX-License-Identifier: GPL-2.0-or-later
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/slab.h>

#include "charlcd.h"
#include "hd44780_common.h"

/* LCD commands */
#define LCD_CMD_DISPLAY_CLEAR …

#define LCD_CMD_ENTRY_MODE …
#define LCD_CMD_CURSOR_INC …

#define LCD_CMD_DISPLAY_CTRL …
#define LCD_CMD_DISPLAY_ON …
#define LCD_CMD_CURSOR_ON …
#define LCD_CMD_BLINK_ON …

#define LCD_CMD_SHIFT …
#define LCD_CMD_DISPLAY_SHIFT …
#define LCD_CMD_SHIFT_RIGHT …

#define LCD_CMD_FUNCTION_SET …
#define LCD_CMD_DATA_LEN_8BITS …
#define LCD_CMD_TWO_LINES …
#define LCD_CMD_FONT_5X10_DOTS …

#define LCD_CMD_SET_CGRAM_ADDR …

#define LCD_CMD_SET_DDRAM_ADDR …

/* sleeps that many milliseconds with a reschedule */
static void long_sleep(int ms)
{ … }

int hd44780_common_print(struct charlcd *lcd, int c)
{ … }
EXPORT_SYMBOL_GPL(…);

int hd44780_common_gotoxy(struct charlcd *lcd, unsigned int x, unsigned int y)
{ … }
EXPORT_SYMBOL_GPL(…);

int hd44780_common_home(struct charlcd *lcd)
{ … }
EXPORT_SYMBOL_GPL(…);

/* clears the display and resets X/Y */
int hd44780_common_clear_display(struct charlcd *lcd)
{ … }
EXPORT_SYMBOL_GPL(…);

int hd44780_common_init_display(struct charlcd *lcd)
{ … }
EXPORT_SYMBOL_GPL(…);

int hd44780_common_shift_cursor(struct charlcd *lcd, enum charlcd_shift_dir dir)
{ … }
EXPORT_SYMBOL_GPL(…);

int hd44780_common_shift_display(struct charlcd *lcd,
		enum charlcd_shift_dir dir)
{ … }
EXPORT_SYMBOL_GPL(…);

static void hd44780_common_set_mode(struct hd44780_common *hdc)
{ … }

int hd44780_common_display(struct charlcd *lcd, enum charlcd_onoff on)
{ … }
EXPORT_SYMBOL_GPL(…);

int hd44780_common_cursor(struct charlcd *lcd, enum charlcd_onoff on)
{ … }
EXPORT_SYMBOL_GPL(…);

int hd44780_common_blink(struct charlcd *lcd, enum charlcd_onoff on)
{ … }
EXPORT_SYMBOL_GPL(…);

static void hd44780_common_set_function(struct hd44780_common *hdc)
{ … }

int hd44780_common_fontsize(struct charlcd *lcd, enum charlcd_fontsize size)
{ … }
EXPORT_SYMBOL_GPL(…);

int hd44780_common_lines(struct charlcd *lcd, enum charlcd_lines lines)
{ … }
EXPORT_SYMBOL_GPL(…);

int hd44780_common_redefine_char(struct charlcd *lcd, char *esc)
{ … }
EXPORT_SYMBOL_GPL(…);

struct hd44780_common *hd44780_common_alloc(void)
{ … }
EXPORT_SYMBOL_GPL(…);

MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;