u-boot/drivers/demo/demo-simple.c
Simon Glass 39f7611fec dm: Add a demonstration/example driver
As an example of how to write a uclass and a driver, provide a demo version
of each, accessible through the 'demo' command.

To use these with driver model, define CONFIG_CMD_DEMO and CONFIG_DM_DEMO.

The two demo drivers are enabled with CONFIG_DM_DEMO_SIMPLE and
CONFIG_DM_DEMO_SHAPE.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Pavel Herrmann <morpheus.ibis@gmail.com>
Signed-off-by: Viktor Křivák <viktor.krivak@gmail.com>
Signed-off-by: Tomas Hlavacek <tmshlvck@gmail.com>
2014-03-04 12:15:29 -05:00

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1,009 B
C

/*
* 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 <asm/io.h>
static int simple_hello(struct device *dev, int ch)
{
const struct dm_demo_pdata *pdata = dev_get_platdata(dev);
printf("Hello from %08x: %s %d\n", map_to_sysmem(dev), pdata->colour,
pdata->sides);
return 0;
}
static const struct demo_ops simple_ops = {
.hello = simple_hello,
};
static int demo_shape_ofdata_to_platdata(struct device *dev)
{
/* Parse the data that is common with all demo devices */
return demo_parse_dt(dev);
}
static const struct device_id demo_shape_id[] = {
{ "demo-simple", 0 },
{ },
};
U_BOOT_DRIVER(demo_simple_drv) = {
.name = "demo_simple_drv",
.of_match = demo_shape_id,
.id = UCLASS_DEMO,
.ofdata_to_platdata = demo_shape_ofdata_to_platdata,
.ops = &simple_ops,
.platdata_auto_alloc_size = sizeof(struct dm_demo_pdata),
};