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/*
* File : lnn800x480.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2010 - 2012, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2010-01-01 bernard first version from QiuYi's driver
*/
#include <rtthread.h>
#include <soc3210.h>
/* LCD driver for 800x480 16bit */
#define RT_HW_LCD_WIDTH 800
#define RT_HW_LCD_HEIGHT 480
#define K1BASE 0xA0000000
#define KSEG1(addr) ((void *)(K1BASE | (rt_uint32_t)(addr)))
#define HW_FB_ADDR KSEG1(_rt_framebuffer)
#define HW_FB_PIXEL(x, y) *(volatile rt_uint16_t*)((rt_uint8_t*)HW_FB_ADDR + (y * RT_HW_LCD_WIDTH * 2) + x * 2)
ALIGN(4)
volatile rt_uint16_t _rt_framebuffer[RT_HW_LCD_HEIGHT][RT_HW_LCD_WIDTH];
static struct rt_device_graphic_info _lcd_info;
static rt_err_t rt_lcd_init (rt_device_t dev)
{
/* disable LCD controller */
LCD_CTRL = LCD_CTRL & 0xfffe;
/* set LCD clock */
HSB_MISC_REG = (HSB_MISC_REG & 0xFFFD01FF) |
(0x01 << 17) | /* enable LCD */
(0x05 << 9); /* clock */
LCD_VBARA = (rt_uint32_t)_rt_framebuffer - 0x80000000;
LCD_VBARB = (rt_uint32_t)_rt_framebuffer - 0x80000000;
LCD_HTIM = 0x12c031f;
LCD_VTIM = 0x11501df;
LCD_HVLEN = 0x41e0279;
LCD_CTRL = 0x8709;
rt_kprintf("VBARA 0x%08x\n", LCD_VBARA);
rt_kprintf("CTRL 0x%08x\n", LCD_CTRL);
rt_kprintf("HTIM 0x%08x\n", LCD_HTIM);
rt_kprintf("VTIM 0x%08x\n", LCD_VTIM);
rt_kprintf("HVLEN 0x%08x\n", LCD_HVLEN);
rt_kprintf("HSB_MISC 0x%08x\n", HSB_MISC_REG);
return RT_EOK;
}
static rt_err_t rt_lcd_control (rt_device_t dev, rt_uint8_t cmd, void *args)
{
switch (cmd)
{
case RTGRAPHIC_CTRL_RECT_UPDATE:
break;
case RTGRAPHIC_CTRL_POWERON:
break;
case RTGRAPHIC_CTRL_POWEROFF:
break;
case RTGRAPHIC_CTRL_GET_INFO:
rt_memcpy(args, &_lcd_info, sizeof(_lcd_info));
break;
case RTGRAPHIC_CTRL_SET_MODE:
break;
}
return RT_EOK;
}
void rt_hw_lcd_init(void)
{
rt_device_t lcd = rt_malloc(sizeof(struct rt_device));
if (lcd == RT_NULL)
return; /* no memory yet */
_lcd_info.bits_per_pixel = 16;
_lcd_info.pixel_format = RTGRAPHIC_PIXEL_FORMAT_RGB565P;
_lcd_info.framebuffer = (rt_uint8_t*)HW_FB_ADDR;
_lcd_info.width = RT_HW_LCD_WIDTH;
_lcd_info.height = RT_HW_LCD_HEIGHT;
/* init device structure */
lcd->type = RT_Device_Class_Graphic;
lcd->init = rt_lcd_init;
lcd->open = RT_NULL;
lcd->close = RT_NULL;
lcd->control = rt_lcd_control;
lcd->user_data = (void*)&_lcd_info;
/* register lcd device to RT-Thread */
rt_device_register(lcd, "lcd", RT_DEVICE_FLAG_RDWR);
}
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