[people/ms/u-boot.git] / drivers / sysreset / sysreset_snapdragon.c

/*
 * Qualcomm APQ8016 reset controller driver
 *
 * (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <dm.h>
#include <errno.h>
#include <sysreset.h>
#include <asm/io.h>

DECLARE_GLOBAL_DATA_PTR;

static int msm_sysreset_request(struct udevice *dev, enum sysreset_t type)
{
	phys_addr_t addr = dev_get_addr(dev);
	if (!addr)
		return -EINVAL;
	writel(0, addr);
	return -EINPROGRESS;
}

static struct sysreset_ops msm_sysreset_ops = {
	.request	= msm_sysreset_request,
};

static const struct udevice_id msm_sysreset_ids[] = {
	{ .compatible = "qcom,pshold" },
	{ }
};

U_BOOT_DRIVER(msm_reset) = {
	.name		= "msm_sysreset",
	.id		= UCLASS_SYSRESET,
	.of_match	= msm_sysreset_ids,
	.ops		= &msm_sysreset_ops,
};
Commit	Line	Data
08592136 MK	1	/*
	2	* Qualcomm APQ8016 reset controller driver
	3	*
	4	* (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
	5	*
	6	* SPDX-License-Identifier: GPL-2.0+
	7	*/
	8
	9	#include <common.h>
	10	#include <dm.h>
	11	#include <errno.h>
11636258	12	#include <sysreset.h>
08592136 MK	13	#include <asm/io.h>
	14
	15	DECLARE_GLOBAL_DATA_PTR;
	16
11636258	17	static int msm_sysreset_request(struct udevice *dev, enum sysreset_t type)
08592136 MK	18	{
	19	phys_addr_t addr = dev_get_addr(dev);
	20	if (!addr)
	21	return -EINVAL;
	22	writel(0, addr);
	23	return -EINPROGRESS;
	24	}
	25
11636258 SW	26	static struct sysreset_ops msm_sysreset_ops = {
11636258 SW	27	.request = msm_sysreset_request,
08592136 MK	28	};
08592136 MK	29
11636258	30	static const struct udevice_id msm_sysreset_ids[] = {
08592136 MK	31	{ .compatible = "qcom,pshold" },
	32	{ }
	33	};
	34
	35	U_BOOT_DRIVER(msm_reset) = {
11636258 SW	36	.name = "msm_sysreset",
	37	.id = UCLASS_SYSRESET,
	38	.of_match = msm_sysreset_ids,
	39	.ops = &msm_sysreset_ops,
08592136	40	};