diff options
Diffstat (limited to 'board/amcc/taihu/lcd.c')
| -rw-r--r-- | board/amcc/taihu/lcd.c | 237 |
1 files changed, 0 insertions, 237 deletions
diff --git a/board/amcc/taihu/lcd.c b/board/amcc/taihu/lcd.c deleted file mode 100644 index c7c7fa4439..0000000000 --- a/board/amcc/taihu/lcd.c +++ /dev/null @@ -1,237 +0,0 @@ -/* - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <config.h> -#include <common.h> -#include <command.h> -#include <asm/io.h> -#include <asm/ppc4xx-gpio.h> - -#define LCD_CMD_ADDR 0x50100002 -#define LCD_DATA_ADDR 0x50100003 -#define LCD_BLK_CTRL CPLD_REG1_ADDR - -static char *amcc_logo = "AMCC 405EP TAIHU EVALUATION KIT"; -static int addr_flag = 0x80; - -static void lcd_bl_ctrl(char val) -{ - out_8((u8 *) LCD_BLK_CTRL, in_8((u8 *) LCD_BLK_CTRL) | val); -} - -static void lcd_putc(int val) -{ - int i = 100; - char addr; - - while (i--) { - if ((in_8((u8 *) LCD_CMD_ADDR) & 0x80) != 0x80) { /*BF = 1 ?*/ - udelay(50); - break; - } - udelay(50); - } - - if (in_8((u8 *) LCD_CMD_ADDR) & 0x80) { - printf("LCD is busy\n"); - return; - } - - addr = in_8((u8 *) LCD_CMD_ADDR); - udelay(50); - if ((addr != 0) && (addr % 0x10 == 0)) { - addr_flag ^= 0x40; - out_8((u8 *) LCD_CMD_ADDR, addr_flag); - } - - udelay(50); - out_8((u8 *) LCD_DATA_ADDR, val); - udelay(50); -} - -static void lcd_puts(char *s) -{ - char *p = s; - int i = 100; - - while (i--) { - if ((in_8((u8 *) LCD_CMD_ADDR) & 0x80) != 0x80) { /*BF = 1 ?*/ - udelay(50); - break; - } - udelay(50); - } - - if (in_8((u8 *) LCD_CMD_ADDR) & 0x80) { - printf("LCD is busy\n"); - return; - } - - while (*p) - lcd_putc(*p++); -} - -static void lcd_put_logo(void) -{ - int i = 100; - char *p = amcc_logo; - - while (i--) { - if ((in_8((u8 *) LCD_CMD_ADDR) & 0x80) != 0x80) { /*BF = 1 ?*/ - udelay(50); - break; - } - udelay(50); - } - - if (in_8((u8 *) LCD_CMD_ADDR) & 0x80) { - printf("LCD is busy\n"); - return; - } - - out_8((u8 *) LCD_CMD_ADDR, 0x80); - while (*p) - lcd_putc(*p++); -} - -int lcd_init(void) -{ - puts("LCD: "); - out_8((u8 *) LCD_CMD_ADDR, 0x38); /* set function:8-bit,2-line,5x7 font type */ - udelay(50); - out_8((u8 *) LCD_CMD_ADDR, 0x0f); /* set display on,cursor on,blink on */ - udelay(50); - out_8((u8 *) LCD_CMD_ADDR, 0x01); /* display clear */ - udelay(2000); - out_8((u8 *) LCD_CMD_ADDR, 0x06); /* set entry */ - udelay(50); - lcd_bl_ctrl(0x02); /* set backlight on */ - lcd_put_logo(); - puts("ready\n"); - - return 0; -} - -static int do_lcd_clear (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) -{ - out_8((u8 *) LCD_CMD_ADDR, 0x01); - udelay(2000); - - return 0; -} - -static int do_lcd_puts (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) -{ - if (argc < 2) - return cmd_usage(cmdtp); - - lcd_puts(argv[1]); - - return 0; -} - -static int do_lcd_putc (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) -{ - if (argc < 2) - return cmd_usage(cmdtp); - - lcd_putc((char)argv[1][0]); - - return 0; -} - -static int do_lcd_cur (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) -{ - ulong count; - ulong dir; - char cur_addr; - - if (argc < 3) - return cmd_usage(cmdtp); - - count = simple_strtoul(argv[1], NULL, 16); - if (count > 31) { - printf("unable to shift > 0x20\n"); - count = 0; - } - - dir = simple_strtoul(argv[2], NULL, 16); - cur_addr = in_8((u8 *) LCD_CMD_ADDR); - udelay(50); - - if (dir == 0x0) { - if (addr_flag == 0x80) { - if (count >= (cur_addr & 0xf)) { - out_8((u8 *) LCD_CMD_ADDR, 0x80); - udelay(50); - count = 0; - } - } else { - if (count >= ((cur_addr & 0x0f) + 0x0f)) { - out_8((u8 *) LCD_CMD_ADDR, 0x80); - addr_flag = 0x80; - udelay(50); - count = 0x0; - } else if (count >= ( cur_addr & 0xf)) { - count -= cur_addr & 0xf ; - out_8((u8 *) LCD_CMD_ADDR, 0x80 | 0xf); - addr_flag = 0x80; - udelay(50); - } - } - } else { - if (addr_flag == 0x80) { - if (count >= (0x1f - (cur_addr & 0xf))) { - count = 0x0; - addr_flag = 0xc0; - out_8((u8 *) LCD_CMD_ADDR, 0xc0 | 0xf); - udelay(50); - } else if ((count + (cur_addr & 0xf ))>= 0x0f) { - count = count + (cur_addr & 0xf) - 0x0f; - addr_flag = 0xc0; - out_8((u8 *) LCD_CMD_ADDR, 0xc0); - udelay(50); - } - } else if ((count + (cur_addr & 0xf )) >= 0x0f) { - count = 0x0; - out_8((u8 *) LCD_CMD_ADDR, 0xC0 | 0x0F); - udelay(50); - } - } - while (count--) { - if (dir == 0) - out_8((u8 *) LCD_CMD_ADDR, 0x10); - else - out_8((u8 *) LCD_CMD_ADDR, 0x14); - udelay(50); - } - - return 0; -} - -U_BOOT_CMD( - lcd_cls, 1, 1, do_lcd_clear, - "lcd clear display", - "" -); - -U_BOOT_CMD( - lcd_puts, 2, 1, do_lcd_puts, - "display string on lcd", - "<string> - <string> to be displayed" -); - -U_BOOT_CMD( - lcd_putc, 2, 1, do_lcd_putc, - "display char on lcd", - "<char> - <char> to be displayed" -); - -U_BOOT_CMD( - lcd_cur, 3, 1, do_lcd_cur, - "shift cursor on lcd", - "<count> <dir> - shift cursor on lcd <count> times, direction is <dir> \n" - " <count> - 0..31\n" - " <dir> - 0=backward 1=forward" -); |