reset: simple: Add reset callback

 * Maxime Ripard <maxime.ripard@free-electrons.com>

 */

#include <linux/delay.h>

#include <linux/device.h>

#include <linux/err.h>

#include <linux/io.h>

	return reset_simple_update(rcdev, id, false);

}

static int reset_simple_reset(struct reset_controller_dev *rcdev,

			      unsigned long id)

{

	struct reset_simple_data *data = to_reset_simple_data(rcdev);

	int ret;

	if (!data->reset_us)

		return -ENOTSUPP;

	ret = reset_simple_assert(rcdev, id);

	if (ret)

		return ret;

	usleep_range(data->reset_us, data->reset_us * 2);

	return reset_simple_deassert(rcdev, id);

}

static int reset_simple_status(struct reset_controller_dev *rcdev,

			       unsigned long id)

{

const struct reset_control_ops reset_simple_ops = {

	.assert		= reset_simple_assert,

	.deassert	= reset_simple_deassert,

	.reset		= reset_simple_reset,

	.status		= reset_simple_status,

};

EXPORT_SYMBOL_GPL(reset_simple_ops);

 * @status_active_low: if true, bits read back as cleared while the reset is

 *                     asserted. Otherwise, bits read back as set while the

 *                     reset is asserted.

 * @reset_us: Minimum delay in microseconds needed that needs to be

 *            waited for between an assert and a deassert to reset the

 *            device. If multiple consumers with different delay

 *            requirements are connected to this controller, it must

 *            be the largest minimum delay. 0 means that such a delay is

 *            unknown and the reset operation is unsupported.

 */

struct reset_simple_data {

	spinlock_t			lock;

	struct reset_controller_dev	rcdev;

	bool				active_low;

	bool				status_active_low;

	unsigned int			reset_us;

};

extern const struct reset_control_ops reset_simple_ops;