/*
 * Copyright (C) 1999 ARM Limited
 * Copyright (C) 2000 Deep Blue Solutions Ltd
 * Copyright 2006-2007,2010 Freescale Semiconductor, Inc. All Rights Reserved.
 * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
 * Copyright 2009 Ilya Yanok, Emcraft Systems Ltd, yanok@emcraft.com
 * Copyright (C) 2011 Wolfram Sang, Pengutronix e.K.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#include <linux/io.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/compiler.h>
#include <linux/export.h>
#include <linux/stmp_device.h>

#define STMP_MODULE_CLKGATE	(1 << 30)
#define STMP_MODULE_SFTRST	(1 << 31)

/*
 * Clear the bit and poll it cleared.  This is usually called with
 * a reset address and mask being either SFTRST(bit 31) or CLKGATE
 * (bit 30).
 */
static int stmp_clear_poll_bit(void __iomem *addr, u32 mask)
{
	int timeout = 0x400;

	writel(mask, addr + STMP_OFFSET_REG_CLR);
	udelay(1);
	while ((readl(addr) & mask) && --timeout)
		/* nothing */;

	return !timeout;
}

int stmp_reset_block(void __iomem *reset_addr)
{
	int ret;
	int timeout = 0x400;

	/* clear and poll SFTRST */
	ret = stmp_clear_poll_bit(reset_addr, STMP_MODULE_SFTRST);
	if (unlikely(ret))
		goto error;

	/* clear CLKGATE */
	writel(STMP_MODULE_CLKGATE, reset_addr + STMP_OFFSET_REG_CLR);

	/* set SFTRST to reset the block */
	writel(STMP_MODULE_SFTRST, reset_addr + STMP_OFFSET_REG_SET);
	udelay(1);

	/* poll CLKGATE becoming set */
	while ((!(readl(reset_addr) & STMP_MODULE_CLKGATE)) && --timeout)
		/* nothing */;
	if (unlikely(!timeout))
		goto error;

	/* clear and poll SFTRST */
	ret = stmp_clear_poll_bit(reset_addr, STMP_MODULE_SFTRST);
	if (unlikely(ret))
		goto error;

	/* clear and poll CLKGATE */
	ret = stmp_clear_poll_bit(reset_addr, STMP_MODULE_CLKGATE);
	if (unlikely(ret))
		goto error;

	return 0;

error:
	pr_err("%s(%p): module reset timeout\n", __func__, reset_addr);
	return -ETIMEDOUT;
}
EXPORT_SYMBOL(stmp_reset_block);
d><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/include/uapi/drm/nouveau_drm.h'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=81917bad86a66f2bdcb12b4c10ab1bf333ed25ec'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?id=81917bad86a66f2bdcb12b4c10ab1bf333ed25ec'>include</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/uapi?id=81917bad86a66f2bdcb12b4c10ab1bf333ed25ec'>uapi</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/drm?id=81917bad86a66f2bdcb12b4c10ab1bf333ed25ec'>drm</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/drm/nouveau_drm.h?id=81917bad86a66f2bdcb12b4c10ab1bf333ed25ec'>nouveau_drm.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='81917bad86a66f2bdcb12b4c10ab1bf333ed25ec'/><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>Roger Shimizu &lt;rogershimizu@gmail.com&gt;</td><td class='right'>2017-01-30 20:07:29 +0900</td></tr>
<tr><th>committer</th><td>Gregory CLEMENT &lt;gregory.clement@free-electrons.com&gt;</td><td class='right'>2017-01-31 12:19:32 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/drm/nouveau_drm.h?id=81917bad86a66f2bdcb12b4c10ab1bf333ed25ec'>81917bad86a66f2bdcb12b4c10ab1bf333ed25ec</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/uapi/drm/nouveau_drm.h?id=81917bad86a66f2bdcb12b4c10ab1bf333ed25ec'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=81917bad86a66f2bdcb12b4c10ab1bf333ed25ec'>3d56cb771fc5f0a37412e62f99aacc6d21a646c0</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/uapi/drm/nouveau_drm.h?id=81917bad86a66f2bdcb12b4c10ab1bf333ed25ec'>include/uapi/drm/nouveau_drm.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/drm/nouveau_drm.h?id=0c744ea4f77d72b3dcebb7a8f2684633ec79be88'>0c744ea4f77d72b3dcebb7a8f2684633ec79be88</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/uapi/drm/nouveau_drm.h?id=81917bad86a66f2bdcb12b4c10ab1bf333ed25ec&amp;id2=0c744ea4f77d72b3dcebb7a8f2684633ec79be88'>diff</a>)</td></tr></table>
<div class='commit-subject'>ARM: dts: orion5x-lschl: Fix model name</div><div class='commit-msg'>Model name should be consistent with legacy device file, so that user
can migrate their system from legacy device support to device-tree
safely.

Legacy device file is currently removed, but it can be found on 4.8
or previous version of linux:
  arch/arm/mach-orion5x/ls-chl-setup.c

Fixes: f94f268979a2 ("ARM: dts: orion5x: convert ls-chl to FDT")
Cc: Ashley Hughes &lt;ashley.hughes@blueyonder.co.uk&gt;
Signed-off-by: Roger Shimizu &lt;rogershimizu@gmail.com&gt;
Signed-off-by: Gregory CLEMENT &lt;gregory.clement@free-electrons.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=81917bad86a66f2bdcb12b4c10ab1bf333ed25ec'>Diffstat</a> (limited to 'include/uapi/drm/nouveau_drm.h')</div><table summary='diffstat' class='diffstat'>