marvell/uboot/common/cmd_lcd.c

/*
 *  Copyright (C) 2015 Marvell International Ltd.
 *  All rights reserved.
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License. See the file COPYING in the main directory of this archive for
 * more details.
 */
#include <common.h>
#include <command.h>
#include <asm/arch/pxa1826fb.h>

enum lcd_cmd {
	LCD_WRITE,
	LCD_READ,
	LCD_ONOFF,
	LCD_LOGO
};

static int lcd_io(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	unsigned int data = 0;
	unsigned int addr = 0;
	unsigned int on = 0;
	enum lcd_cmd sub_cmd;
	const char *str_cmd;
	int i = 0;

	str_cmd = argv[1];
	/* parse the operation */
	switch (*str_cmd) {
	case 'w':
		sub_cmd = LCD_WRITE;
		break;
	case 'r':
		sub_cmd = LCD_READ;
		break;
	case 'o':
		sub_cmd = LCD_ONOFF;
		break;
	case 'l':
		sub_cmd = LCD_LOGO;
		break;
	default:
		return CMD_RET_USAGE;
	}

	if (sub_cmd == LCD_WRITE) {
		printf("## LCD write to panel\n");
		addr = simple_strtoul(argv[2], NULL, 32);
		printf("cmd:  0x%08X\n", addr);
		lcd_send_cmd(addr);
		for (i = 3; i < argc; i++) {
			data = simple_strtoul(argv[i], NULL, 32);
			lcd_send_data(data);
			printf("data: 0x%08X\n", data);
		}
	}

	if (sub_cmd == LCD_READ) {
		printf("## LCD read from panel\n");
		addr = simple_strtoul(argv[2], NULL, 32);
		data = (unsigned int)pxa1826fb_read((unsigned short)addr);
		printf("cmd:  0x%08X\n", addr);
		printf("data: 0x%08X\n", data);
	}

	if (sub_cmd == LCD_ONOFF) {
		printf("## LCD panel on/off\n");
		on = simple_strtoul(argv[2], NULL, 32);
		lcd_panel_on(on);
	}

	if (sub_cmd == LCD_LOGO) {
		printf("## LCD show logo\n");
		lcd_show_logo();
	}

	return 0;
}

/***************************************************/

U_BOOT_CMD(
	lcd,	CONFIG_SYS_MAXARGS,	1,	lcd_io,
	"pxa1826 lcd operation",
	"[r/w] [command] [value]\n"
	"    - with <r/w> argument: read/write operation\n"
	"    - with <command> argument: specify the command value\n"
	"    - with <value> argument: specify the data to write to panel\n"
	"    [o] [on/off] turn on/off panel\n"
	"         on_off: 0 -- off  1 -- on\n"
	"    [l] -- display boot up logo\n"
);