/*
 * drivers/w1/slaves/w1_bq27000.c
 *
 * Copyright (C) 2007 Texas Instruments, Inc.
 *
 * This file is licensed under the terms of the GNU General Public License
 * version 2. This program is licensed "as is" without any warranty of any
 * kind, whether express or implied.
 *
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/types.h>
#include <linux/platform_device.h>
#include <linux/mutex.h>
#include <linux/power/bq27xxx_battery.h>

#include "../w1.h"
#include "../w1_int.h"
#include "../w1_family.h"

#define HDQ_CMD_READ	(0)
#define HDQ_CMD_WRITE	(1<<7)

static int F_ID;

static int w1_bq27000_read(struct device *dev, unsigned int reg)
{
	u8 val;
	struct w1_slave *sl = container_of(dev->parent, struct w1_slave, dev);

	mutex_lock(&sl->master->bus_mutex);
	w1_write_8(sl->master, HDQ_CMD_READ | reg);
	val = w1_read_8(sl->master);
	mutex_unlock(&sl->master->bus_mutex);

	return val;
}

static struct bq27xxx_platform_data bq27000_battery_info = {
	.read   = w1_bq27000_read,
	.name   = "bq27000-battery",
	.chip   = BQ27000,
};

static int w1_bq27000_add_slave(struct w1_slave *sl)
{
	int ret;
	struct platform_device *pdev;

	pdev = platform_device_alloc("bq27000-battery", -1);
	if (!pdev) {
		ret = -ENOMEM;
		return ret;
	}
	ret = platform_device_add_data(pdev,
				       &bq27000_battery_info,
				       sizeof(bq27000_battery_info));
	if (ret)
		goto pdev_add_failed;
	pdev->dev.parent = &sl->dev;

	ret = platform_device_add(pdev);
	if (ret)
		goto pdev_add_failed;

	dev_set_drvdata(&sl->dev, pdev);

	goto success;

pdev_add_failed:
	platform_device_put(pdev);
success:
	return ret;
}

static void w1_bq27000_remove_slave(struct w1_slave *sl)
{
	struct platform_device *pdev = dev_get_drvdata(&sl->dev);

	platform_device_unregister(pdev);
}

static struct w1_family_ops w1_bq27000_fops = {
	.add_slave	= w1_bq27000_add_slave,
	.remove_slave	= w1_bq27000_remove_slave,
};

static struct w1_family w1_bq27000_family = {
	.fid = W1_FAMILY_BQ27000,
	.fops = &w1_bq27000_fops,
};

static int __init w1_bq27000_init(void)
{
	if (F_ID)
		w1_bq27000_family.fid = F_ID;

	return w1_register_family(&w1_bq27000_family);
}

static void __exit w1_bq27000_exit(void)
{
	w1_unregister_family(&w1_bq27000_family);
}


module_init(w1_bq27000_init);
module_exit(w1_bq27000_exit);

module_param(F_ID, int, S_IRUSR);
MODULE_PARM_DESC(F_ID, "1-wire slave FID for BQ device");
MODULE_ALIAS("w1-family-" __stringify(W1_FAMILY_BQ27000));
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Texas Instruments Ltd");
MODULE_DESCRIPTION("HDQ/1-wire slave driver bq27000 battery monitor chip");
 href='/cgit.cgi/linux/net-next.git/commit/?id=047487241ff59374fded8c477f21453681f5995c'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?id=047487241ff59374fded8c477f21453681f5995c'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/unix?id=047487241ff59374fded8c477f21453681f5995c'>unix</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/unix/diag.c?id=047487241ff59374fded8c477f21453681f5995c'>diag.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='047487241ff59374fded8c477f21453681f5995c'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><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>Liam R. Howlett &lt;Liam.Howlett@Oracle.com&gt;</td><td class='right'>2017-01-17 10:59:03 -0500</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-01-30 14:27:54 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/unix/diag.c?id=047487241ff59374fded8c477f21453681f5995c'>047487241ff59374fded8c477f21453681f5995c</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/unix/diag.c?id=047487241ff59374fded8c477f21453681f5995c'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=047487241ff59374fded8c477f21453681f5995c'>1c2616bd373ce5ea28aac2a53e32f5b5834901ce</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/unix/diag.c?id=047487241ff59374fded8c477f21453681f5995c'>net/unix/diag.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/unix/diag.c?id=7a7dc961a28b965a0d0303c2e989df17b411708b'>7a7dc961a28b965a0d0303c2e989df17b411708b</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/unix/diag.c?id=047487241ff59374fded8c477f21453681f5995c&amp;id2=7a7dc961a28b965a0d0303c2e989df17b411708b'>diff</a>)</td></tr></table>
<div class='commit-subject'>sparc64: Handle PIO &amp; MEM non-resumable errors.</div><div class='commit-msg'>User processes trying to access an invalid memory address via PIO will
receive a SIGBUS signal instead of causing a panic.  Memory errors will
receive a SIGKILL since a SIGBUS may result in a coredump which may
attempt to repeat the faulting access.

Signed-off-by: Liam R. Howlett &lt;Liam.Howlett@Oracle.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=047487241ff59374fded8c477f21453681f5995c'>Diffstat</a> (limited to 'net/unix/diag.c')</div><table summary='diffstat' class='diffstat'>