117 lines
2.8 KiB
C
117 lines
2.8 KiB
C
#include <stdint.h>
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#include <string.h>
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#include <stdlib.h>
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#include <rtthread.h>
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#include "drv_clcd.h"
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#define CLCD_WIDTH 480
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#define CLCD_HEIGHT 320
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#define CLCD_DEVICE(dev) (struct drv_clcd_device*)(dev)
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#define PL111_CR_EN 0x001
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#define PL111_CR_PWR 0x800
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#define PL111_IOBASE 0x10020000
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#define PL111_PALBASE (PL111_IOBASE + 0x200)
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typedef struct _PL111MMIO
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{
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uint32_t volatile tim0; //0
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uint32_t volatile tim1; //4
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uint32_t volatile tim2; //8
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uint32_t volatile tim3; //c
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uint32_t volatile upbase; //10
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uint32_t volatile f; //14
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uint32_t volatile control; //18
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uint32_t volatile g; //1c
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} PL111MMIO;
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struct drv_clcd_device
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{
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struct rt_device parent;
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int width;
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int height;
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uint8_t *fb;
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};
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struct drv_clcd_device _lcd;
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static rt_err_t drv_clcd_init(struct rt_device *device)
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{
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struct drv_clcd_device *lcd = CLCD_DEVICE(device);
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lcd = lcd; /* nothing, right now */
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return RT_EOK;
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}
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static rt_err_t drv_clcd_control(struct rt_device *device, int cmd, void *args)
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{
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struct drv_clcd_device *lcd = CLCD_DEVICE(device);
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switch (cmd)
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{
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case RTGRAPHIC_CTRL_RECT_UPDATE:
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{
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struct rt_device_rect_info *info = (struct rt_device_rect_info*)args;
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info = info; /* nothing, right now */
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}
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break;
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case RTGRAPHIC_CTRL_GET_INFO:
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{
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struct rt_device_graphic_info* info = (struct rt_device_graphic_info*)args;
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RT_ASSERT(info != RT_NULL);
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info->pixel_format = RTGRAPHIC_PIXEL_FORMAT_RGB565;
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// info->pixel_format = RTGRAPHIC_PIXEL_FORMAT_ARGB888;
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info->bits_per_pixel= 16;
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info->width = lcd->width;
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info->height = lcd->height;
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info->framebuffer = lcd->fb;
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}
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break;
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}
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return RT_EOK;
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}
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int drv_clcd_hw_init(void)
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{
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PL111MMIO *plio;
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struct rt_device *device = &_lcd.parent;
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/* memset _lcd to zero */
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memset(&_lcd, 0x0, sizeof(_lcd));
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_lcd.width = CLCD_WIDTH;
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_lcd.height = CLCD_HEIGHT;
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_lcd.fb = rt_malloc (_lcd.width * _lcd.height * 2);
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if (_lcd.fb == NULL)
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{
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rt_kprintf("initialize frame buffer failed!\n");
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return -1;
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}
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memset(_lcd.fb, 0xff, _lcd.width * _lcd.height * 2);
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plio = (PL111MMIO*)PL111_IOBASE;
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plio->tim0 = 0x3F1F3C00 | ((CLCD_WIDTH/16 - 1) << 2);
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plio->tim1 = 0x080B6000 | (CLCD_HEIGHT - 1);
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plio->upbase = _lcd.fb;
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/* 16-bit 565 color */
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plio->control = 0x1921 | (0x6 << 1);
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device->type = RT_Device_Class_Graphic;
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device->init = drv_clcd_init;
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device->control = drv_clcd_control;
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rt_device_register(device, "lcd", RT_DEVICE_FLAG_RDWR);
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return 0;
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}
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INIT_DEVICE_EXPORT(drv_clcd_hw_init);
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