2013-01-08 22:40:58 +08:00
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/*
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* File : lnn800x480.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2010 - 2012, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2010-01-01 bernard first version from QiuYi's driver
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*/
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#include <rtthread.h>
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#include <soc3210.h>
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/* LCD driver for 800x480 16bit */
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#define RT_HW_LCD_WIDTH 800
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#define RT_HW_LCD_HEIGHT 480
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#define K1BASE 0xA0000000
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#define KSEG1(addr) ((void *)(K1BASE | (rt_uint32_t)(addr)))
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#define HW_FB_ADDR KSEG1(_rt_framebuffer)
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#define HW_FB_PIXEL(x, y) *(volatile rt_uint16_t*)((rt_uint8_t*)HW_FB_ADDR + (y * RT_HW_LCD_WIDTH * 2) + x * 2)
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ALIGN(4)
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volatile rt_uint16_t _rt_framebuffer[RT_HW_LCD_HEIGHT][RT_HW_LCD_WIDTH];
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static struct rt_device_graphic_info _lcd_info;
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static rt_err_t rt_lcd_init (rt_device_t dev)
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{
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/* disable LCD controller */
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LCD_CTRL = LCD_CTRL & 0xfffe;
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/* set LCD clock */
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HSB_MISC_REG = (HSB_MISC_REG & 0xFFFD01FF) |
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(0x01 << 17) | /* enable LCD */
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(0x05 << 9); /* clock */
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LCD_VBARA = (rt_uint32_t)_rt_framebuffer - 0x80000000;
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LCD_VBARB = (rt_uint32_t)_rt_framebuffer - 0x80000000;
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LCD_HTIM = 0x12c031f;
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LCD_VTIM = 0x11501df;
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LCD_HVLEN = 0x41e0279;
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LCD_CTRL = 0x8709;
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rt_kprintf("VBARA 0x%08x\n", LCD_VBARA);
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rt_kprintf("CTRL 0x%08x\n", LCD_CTRL);
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rt_kprintf("HTIM 0x%08x\n", LCD_HTIM);
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rt_kprintf("VTIM 0x%08x\n", LCD_VTIM);
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rt_kprintf("HVLEN 0x%08x\n", LCD_HVLEN);
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rt_kprintf("HSB_MISC 0x%08x\n", HSB_MISC_REG);
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return RT_EOK;
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}
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static rt_err_t rt_lcd_control (rt_device_t dev, rt_uint8_t cmd, void *args)
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{
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switch (cmd)
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{
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case RTGRAPHIC_CTRL_RECT_UPDATE:
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break;
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case RTGRAPHIC_CTRL_POWERON:
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break;
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case RTGRAPHIC_CTRL_POWEROFF:
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break;
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case RTGRAPHIC_CTRL_GET_INFO:
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rt_memcpy(args, &_lcd_info, sizeof(_lcd_info));
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break;
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case RTGRAPHIC_CTRL_SET_MODE:
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break;
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}
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return RT_EOK;
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}
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void rt_hw_lcd_init(void)
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{
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rt_device_t lcd = rt_malloc(sizeof(struct rt_device));
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if (lcd == RT_NULL)
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return; /* no memory yet */
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_lcd_info.bits_per_pixel = 16;
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_lcd_info.pixel_format = RTGRAPHIC_PIXEL_FORMAT_RGB565P;
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_lcd_info.framebuffer = (rt_uint8_t*)HW_FB_ADDR;
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_lcd_info.width = RT_HW_LCD_WIDTH;
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_lcd_info.height = RT_HW_LCD_HEIGHT;
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/* init device structure */
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lcd->type = RT_Device_Class_Graphic;
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lcd->init = rt_lcd_init;
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lcd->open = RT_NULL;
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lcd->close = RT_NULL;
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lcd->control = rt_lcd_control;
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lcd->user_data = (void*)&_lcd_info;
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/* register lcd device to RT-Thread */
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rt_device_register(lcd, "lcd", RT_DEVICE_FLAG_RDWR);
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}
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