/*
 * rfkill-regulator.c - Regulator consumer driver for rfkill
 *
 * Copyright (C) 2009  Guiming Zhuo <gmzhuo@gmail.com>
 * Copyright (C) 2011  Antonio Ospite <ospite@studenti.unina.it>
 *
 * Implementation inspired by leds-regulator driver.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 */

#include <linux/module.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include <linux/rfkill.h>
#include <linux/rfkill-regulator.h>

struct rfkill_regulator_data {
	struct rfkill *rf_kill;
	bool reg_enabled;

	struct regulator *vcc;
};

static int rfkill_regulator_set_block(void *data, bool blocked)
{
	struct rfkill_regulator_data *rfkill_data = data;
	int ret = 0;

	pr_debug("%s: blocked: %d\n", __func__, blocked);

	if (blocked) {
		if (rfkill_data->reg_enabled) {
			regulator_disable(rfkill_data->vcc);
			rfkill_data->reg_enabled = false;
		}
	} else {
		if (!rfkill_data->reg_enabled) {
			ret = regulator_enable(rfkill_data->vcc);
			if (!ret)
				rfkill_data->reg_enabled = true;
		}
	}

	pr_debug("%s: regulator_is_enabled after set_block: %d\n", __func__,
		regulator_is_enabled(rfkill_data->vcc));

	return ret;
}

static struct rfkill_ops rfkill_regulator_ops = {
	.set_block = rfkill_regulator_set_block,
};

static int rfkill_regulator_probe(struct platform_device *pdev)
{
	struct rfkill_regulator_platform_data *pdata = pdev->dev.platform_data;
	struct rfkill_regulator_data *rfkill_data;
	struct regulator *vcc;
	struct rfkill *rf_kill;
	int ret = 0;

	if (pdata == NULL) {
		dev_err(&pdev->dev, "no platform data\n");
		return -ENODEV;
	}

	if (pdata->name == NULL || pdata->type == 0) {
		dev_err(&pdev->dev, "invalid name or type in platform data\n");
		return -EINVAL;
	}

	vcc = regulator_get_exclusive(&pdev->dev, "vrfkill");
	if (IS_ERR(vcc)) {
		dev_err(&pdev->dev, "Cannot get vcc for %s\n", pdata->name);
		ret = PTR_ERR(vcc);
		goto out;
	}

	rfkill_data = kzalloc(sizeof(*rfkill_data), GFP_KERNEL);
	if (rfkill_data == NULL) {
		ret = -ENOMEM;
		goto err_data_alloc;
	}

	rf_kill = rfkill_alloc(pdata->name, &pdev->dev,
				pdata->type,
				&rfkill_regulator_ops, rfkill_data);
	if (rf_kill == NULL) {
		ret = -ENOMEM;
		goto err_rfkill_alloc;
	}

	if (regulator_is_enabled(vcc)) {
		dev_dbg(&pdev->dev, "Regulator already enabled\n");
		rfkill_data->reg_enabled = true;
	}
	rfkill_data->vcc = vcc;
	rfkill_data->rf_kill = rf_kill;

	ret = rfkill_register(rf_kill);
	if (ret) {
		dev_err(&pdev->dev, "Cannot register rfkill device\n");
		goto err_rfkill_register;
	}

	platform_set_drvdata(pdev, rfkill_data);
	dev_info(&pdev->dev, "%s initialized\n", pdata->name);

	return 0;

err_rfkill_register:
	rfkill_destroy(rf_kill);
err_rfkill_alloc:
	kfree(rfkill_data);
err_data_alloc:
	regulator_put(vcc);
out:
	return ret;
}

static int rfkill_regulator_remove(struct platform_device *pdev)
{
	struct rfkill_regulator_data *rfkill_data = platform_get_drvdata(pdev);
	struct rfkill *rf_kill = rfkill_data->rf_kill;

	rfkill_unregister(rf_kill);
	rfkill_destroy(rf_kill);
	regulator_put(rfkill_data->vcc);
	kfree(rfkill_data);

	return 0;
}

static struct platform_driver rfkill_regulator_driver = {
	.probe = rfkill_regulator_probe,
	.remove = rfkill_regulator_remove,
	.driver = {
		.name = "rfkill-regulator",
	},
};

module_platform_driver(rfkill_regulator_driver);

MODULE_AUTHOR("Guiming Zhuo <gmzhuo@gmail.com>");
MODULE_AUTHOR("Antonio Ospite <ospite@studenti.unina.it>");
MODULE_DESCRIPTION("Regulator consumer driver for rfkill");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:rfkill-regulator");
tion><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-12-25 14:30:04 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-12-25 14:30:04 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/l3mdev?h=nds-private-remove&amp;id=3ddc76dfc786cc6f87852693227fb0b1f124f807'>3ddc76dfc786cc6f87852693227fb0b1f124f807</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/l3mdev?id=3ddc76dfc786cc6f87852693227fb0b1f124f807'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=3ddc76dfc786cc6f87852693227fb0b1f124f807'>8192b4721e05cf6823087f9696db8c0c8f144b02</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/l3mdev?h=nds-private-remove&amp;id=3ddc76dfc786cc6f87852693227fb0b1f124f807'>net/l3mdev</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/l3mdev?h=nds-private-remove&amp;id=b272f732f888d4cf43c943a40c9aaa836f9b7431'>b272f732f888d4cf43c943a40c9aaa836f9b7431</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/l3mdev?h=nds-private-remove&amp;id=3ddc76dfc786cc6f87852693227fb0b1f124f807&amp;id2=b272f732f888d4cf43c943a40c9aaa836f9b7431'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/l3mdev?h=nds-private-remove&amp;id=1f3a8e49d8f28f498b8694464623ac20aebfe62a'>1f3a8e49d8f28f498b8694464623ac20aebfe62a</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/l3mdev?h=nds-private-remove&amp;id=3ddc76dfc786cc6f87852693227fb0b1f124f807&amp;id2=1f3a8e49d8f28f498b8694464623ac20aebfe62a'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip</div><div class='commit-msg'>Pull timer type cleanups from Thomas Gleixner:
 "This series does a tree wide cleanup of types related to
  timers/timekeeping.

   - Get rid of cycles_t and use a plain u64. The type is not really
     helpful and caused more confusion than clarity

   - Get rid of the ktime union. The union has become useless as we use
     the scalar nanoseconds storage unconditionally now. The 32bit
     timespec alike storage got removed due to the Y2038 limitations
     some time ago.

     That leaves the odd union access around for no reason. Clean it up.

  Both changes have been done with coccinelle and a small amount of
  manual mopping up"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  ktime: Get rid of ktime_equal()
  ktime: Cleanup ktime_set() usage
  ktime: Get rid of the union
  clocksource: Use a plain u64 instead of cycle_t
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=3ddc76dfc786cc6f87852693227fb0b1f124f807'>Diffstat</a> (limited to 'net/l3mdev')</div><table summary='diffstat' class='diffstat'>