Eric Lee / smarc-uboot

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drivers/demo/demo-uclass.c 1.44 KB
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39f7611fe   Simon Glass   dm: Add a demonst... 
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  /*
   * Copyright (c) 2013 Google, Inc
   *
   * (C) Copyright 2012
   * Pavel Herrmann <morpheus.ibis@gmail.com>
   *
   * SPDX-License-Identifier:	GPL-2.0+
   */
  
  #include <common.h>
  #include <dm.h>
  #include <dm-demo.h>
  #include <errno.h>
  #include <fdtdec.h>
  #include <malloc.h>
  #include <asm/io.h>
  #include <linux/list.h>
  
  DECLARE_GLOBAL_DATA_PTR;
  
  UCLASS_DRIVER(demo) = {
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  	.name		= "demo",
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  	.id		= UCLASS_DEMO,
  };
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  int demo_hello(struct udevice *dev, int ch)
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  {
  	const struct demo_ops *ops = device_get_ops(dev);
  
  	if (!ops->hello)
  		return -ENOSYS;
  
  	return ops->hello(dev, ch);
  }
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  int demo_status(struct udevice *dev, int *status)
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  {
  	const struct demo_ops *ops = device_get_ops(dev);
  
  	if (!ops->status)
  		return -ENOSYS;
  
  	return ops->status(dev, status);
  }
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  int demo_get_light(struct udevice *dev)
  {
  	const struct demo_ops *ops = device_get_ops(dev);
  
  	if (!ops->get_light)
  		return -ENOSYS;
  
  	return ops->get_light(dev);
  }
  
  int demo_set_light(struct udevice *dev, int light)
  {
  	const struct demo_ops *ops = device_get_ops(dev);
  
  	if (!ops->set_light)
  		return -ENOSYS;
  
  	return ops->set_light(dev, light);
  }
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  int demo_parse_dt(struct udevice *dev)
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  {
  	struct dm_demo_pdata *pdata = dev_get_platdata(dev);
  	int dn = dev->of_offset;
  
  	pdata->sides = fdtdec_get_int(gd->fdt_blob, dn, "sides", 0);
  	pdata->colour = fdt_getprop(gd->fdt_blob, dn, "colour", NULL);
  	if (!pdata->sides || !pdata->colour) {
  		debug("%s: Invalid device tree data
  ", __func__);
  		return -EINVAL;
  	}
  
  	return 0;
  }