Function rtgui_touch_hw_init

bsp/loongson/ls1cdev/drivers/touch.c:533–596

rt_err_t rtgui_touch_hw_init(const char * spi_device_name)
{
         rt_uint32_t arg[2];
    struct rt_device * spi_device;
        struct rt_thread * touch_thread;
    rt_err_t err;

    rt_kprintf("spi1 cs0 start...\n");
    spi_device = rt_device_find("spi10");
    if(spi_device ==  RT_NULL)
    {
        rt_kprintf("Did not find spi1, exit thread....\n");
        return;
    }
    err = rt_device_open(spi_device, RT_DEVICE_OFLAG_RDWR);
    if(err != RT_EOK)
    {
        rt_kprintf("Open spi1 failed %08X, exit thread....\n", err);
        return;
    }

      /* config spi */
      {
          struct rt_spi_configuration cfg;
          cfg.data_width = 8;
          cfg.mode = RT_SPI_MODE_0;
       cfg.max_hz  = 200 * 1000; /* 200K */
        rt_spi_configure((struct rt_spi_device *)spi_device, &cfg);
      }

    touch = (struct rtgui_touch_device*)rt_malloc (sizeof(struct rtgui_touch_device));
    if (touch == RT_NULL) return -RT_ENOMEM; /* no memory yet */

    /* clear device structure */
    rt_memset(&(touch->parent), 0, sizeof(struct rt_device));

    rt_event_init(&touch->event, "touch", RT_IPC_FLAG_FIFO);

    touch->spi_device = (struct rt_spi_device *)spi_device;
    touch->calibrating = false;

    touch->min_x = MIN_X_DEFAULT;
    touch->max_x = MAX_X_DEFAULT;
    touch->min_y = MIN_Y_DEFAULT;
    touch->max_y = MAX_Y_DEFAULT;

    /* init device structure */
    touch->parent.type = RT_Device_Class_Miscellaneous;
    touch->parent.init = rtgui_touch_init;
    touch->parent.control = rtgui_touch_control;
    touch->parent.user_data = RT_NULL;

    /* register touch device to RT-Thread */
    rt_device_register(&(touch->parent), "touch", RT_DEVICE_FLAG_RDWR);


    touch_thread = rt_thread_create("touch_thread",
                                    touch_thread_entry, RT_NULL,