[people/ms/u-boot.git] / drivers / pwm / sandbox_pwm.c

/*
 * Copyright (c) 2015 Google, Inc
 * Written by Simon Glass <sjg@chromium.org>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <dm.h>
#include <errno.h>
#include <pwm.h>
#include <asm/test.h>

DECLARE_GLOBAL_DATA_PTR;

enum {
	NUM_CHANNELS	= 3,
};

struct sandbox_pwm_chan {
	uint period_ns;
	uint duty_ns;
	bool enable;
};

struct sandbox_pwm_priv {
	struct sandbox_pwm_chan chan[NUM_CHANNELS];
};

static int sandbox_pwm_set_config(struct udevice *dev, uint channel,
				  uint period_ns, uint duty_ns)
{
	struct sandbox_pwm_priv *priv = dev_get_priv(dev);
	struct sandbox_pwm_chan *chan;

	if (channel >= NUM_CHANNELS)
		return -ENOSPC;
	chan = &priv->chan[channel];
	chan->period_ns = period_ns;
	chan->duty_ns = duty_ns;

	return 0;
}

static int sandbox_pwm_set_enable(struct udevice *dev, uint channel,
				  bool enable)
{
	struct sandbox_pwm_priv *priv = dev_get_priv(dev);
	struct sandbox_pwm_chan *chan;

	if (channel >= NUM_CHANNELS)
		return -ENOSPC;
	chan = &priv->chan[channel];
	chan->enable = enable;

	return 0;
}

static const struct pwm_ops sandbox_pwm_ops = {
	.set_config	= sandbox_pwm_set_config,
	.set_enable	= sandbox_pwm_set_enable,
};

static const struct udevice_id sandbox_pwm_ids[] = {
	{ .compatible = "sandbox,pwm" },
	{ }
};

U_BOOT_DRIVER(warm_pwm_sandbox) = {
	.name		= "pwm_sandbox",
	.id		= UCLASS_PWM,
	.of_match	= sandbox_pwm_ids,
	.ops		= &sandbox_pwm_ops,
	.priv_auto_alloc_size	= sizeof(struct sandbox_pwm_priv),
};
Commit	Line	Data
43b41566 SG	1	/*
	2	* Copyright (c) 2015 Google, Inc
	3	* Written by Simon Glass <sjg@chromium.org>
	4	*
	5	* SPDX-License-Identifier: GPL-2.0+
	6	*/
	7
	8	#include <common.h>
	9	#include <dm.h>
	10	#include <errno.h>
	11	#include <pwm.h>
	12	#include <asm/test.h>
	13
	14	DECLARE_GLOBAL_DATA_PTR;
	15
	16	enum {
	17	NUM_CHANNELS = 3,
	18	};
	19
	20	struct sandbox_pwm_chan {
	21	uint period_ns;
	22	uint duty_ns;
	23	bool enable;
	24	};
	25
	26	struct sandbox_pwm_priv {
	27	struct sandbox_pwm_chan chan[NUM_CHANNELS];
	28	};
	29
	30	static int sandbox_pwm_set_config(struct udevice *dev, uint channel,
	31	uint period_ns, uint duty_ns)
	32	{
	33	struct sandbox_pwm_priv *priv = dev_get_priv(dev);
	34	struct sandbox_pwm_chan *chan;
	35
	36	if (channel >= NUM_CHANNELS)
	37	return -ENOSPC;
	38	chan = &priv->chan[channel];
	39	chan->period_ns = period_ns;
	40	chan->duty_ns = duty_ns;
	41
	42	return 0;
	43	}
	44
	45	static int sandbox_pwm_set_enable(struct udevice *dev, uint channel,
	46	bool enable)
	47	{
	48	struct sandbox_pwm_priv *priv = dev_get_priv(dev);
	49	struct sandbox_pwm_chan *chan;
	50
	51	if (channel >= NUM_CHANNELS)
	52	return -ENOSPC;
	53	chan = &priv->chan[channel];
	54	chan->enable = enable;
	55
	56	return 0;
	57	}
	58
	59	static const struct pwm_ops sandbox_pwm_ops = {
	60	.set_config = sandbox_pwm_set_config,
	61	.set_enable = sandbox_pwm_set_enable,
	62	};
	63
	64	static const struct udevice_id sandbox_pwm_ids[] = {
65	{ .compatible = "sandbox,pwm" },
66	{ }
67	};
68
69	U_BOOT_DRIVER(warm_pwm_sandbox) = {
70	.name = "pwm_sandbox",
71	.id = UCLASS_PWM,
72	.of_match = sandbox_pwm_ids,
73	.ops = &sandbox_pwm_ops,
74	.priv_auto_alloc_size = sizeof(struct sandbox_pwm_priv),
75	};