WhyCan Forum(哇酷开发者社区)

static void fbtft_set_addr_win(struct fbtft_par *par, int xs, int ys, int xe,
			       int ye)
{
	switch(par->info->var.rotate)
	{
		case   0: xs+=53;xe+=53;ys+=40;ye+=40;
				 break;
		case  90: xs+=40;xe+=40;ys+=53;ye+=53;
				 break;
		case 180: xs+=53;xe+=53;ys+=40;ye+=40;
				 break;
		case 270: xs+=40;xe+=40;ys+=53;ye+=53;
				 break;
		default :
				 break;
	}

	write_reg(par, MIPI_DCS_SET_COLUMN_ADDRESS,
		  (xs >> 8) & 0xFF, xs & 0xFF, (xe >> 8) & 0xFF, xe & 0xFF);

	write_reg(par, MIPI_DCS_SET_PAGE_ADDRESS,
		  (ys >> 8) & 0xFF, ys & 0xFF, (ye >> 8) & 0xFF, ye & 0xFF);

	write_reg(par, MIPI_DCS_WRITE_MEMORY_START);
}