/*
 * 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.
 *
 * iPAQ microcontroller backlight support
 * Author : Linus Walleij <linus.walleij@linaro.org>
 */

#include <linux/backlight.h>
#include <linux/err.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/mfd/ipaq-micro.h>
#include <linux/module.h>
#include <linux/platform_device.h>

static int micro_bl_update_status(struct backlight_device *bd)
{
	struct ipaq_micro *micro = dev_get_drvdata(&bd->dev);
	int intensity = bd->props.brightness;
	struct ipaq_micro_msg msg = {
		.id = MSG_BACKLIGHT,
		.tx_len = 3,
	};

	if (bd->props.power != FB_BLANK_UNBLANK)
		intensity = 0;
	if (bd->props.state & (BL_CORE_FBBLANK | BL_CORE_SUSPENDED))
		intensity = 0;

	/*
	 * Message format:
	 * Byte 0: backlight instance (usually 1)
	 * Byte 1: on/off
	 * Byte 2: intensity, 0-255
	 */
	msg.tx_data[0] = 0x01;
	msg.tx_data[1] = intensity > 0 ? 1 : 0;
	msg.tx_data[2] = intensity;
	return ipaq_micro_tx_msg_sync(micro, &msg);
}

static const struct backlight_ops micro_bl_ops = {
	.options = BL_CORE_SUSPENDRESUME,
	.update_status  = micro_bl_update_status,
};

static struct backlight_properties micro_bl_props = {
	.type = BACKLIGHT_RAW,
	.max_brightness = 255,
	.power = FB_BLANK_UNBLANK,
	.brightness = 64,
};

static int micro_backlight_probe(struct platform_device *pdev)
{
	struct backlight_device *bd;
	struct ipaq_micro *micro = dev_get_drvdata(pdev->dev.parent);

	bd = devm_backlight_device_register(&pdev->dev, "ipaq-micro-backlight",
					    &pdev->dev, micro, &micro_bl_ops,
					    &micro_bl_props);
	if (IS_ERR(bd))
		return PTR_ERR(bd);

	platform_set_drvdata(pdev, bd);
	backlight_update_status(bd);

	return 0;
}

static struct platform_driver micro_backlight_device_driver = {
	.driver = {
		.name    = "ipaq-micro-backlight",
	},
	.probe   = micro_backlight_probe,
};
module_platform_driver(micro_backlight_device_driver);

MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("driver for iPAQ Atmel micro backlight");
MODULE_ALIAS("platform:ipaq-micro-backlight");
td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/include/rdma/opa_port_info.h'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=30103b5b6432a51c3822a26dc340e35d91237f39'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?id=30103b5b6432a51c3822a26dc340e35d91237f39'>include</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/rdma?id=30103b5b6432a51c3822a26dc340e35d91237f39'>rdma</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/rdma/opa_port_info.h?id=30103b5b6432a51c3822a26dc340e35d91237f39'>opa_port_info.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='30103b5b6432a51c3822a26dc340e35d91237f39'/><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>David Lechner &lt;david@lechnology.com&gt;</td><td class='right'>2016-12-04 16:52:31 -0600</td></tr>
<tr><th>committer</th><td>Mark Brown &lt;broonie@kernel.org&gt;</td><td class='right'>2016-12-05 11:38:30 +0000</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/rdma/opa_port_info.h?id=30103b5b6432a51c3822a26dc340e35d91237f39'>30103b5b6432a51c3822a26dc340e35d91237f39</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/rdma/opa_port_info.h?id=30103b5b6432a51c3822a26dc340e35d91237f39'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=30103b5b6432a51c3822a26dc340e35d91237f39'>0806755f1615c0bc8598558b4a845ab1cf9c8291</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/rdma/opa_port_info.h?id=30103b5b6432a51c3822a26dc340e35d91237f39'>include/rdma/opa_port_info.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/rdma/opa_port_info.h?id=1b5b42216469b05ef4b5916cb40b127dfab1da88'>1b5b42216469b05ef4b5916cb40b127dfab1da88</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/rdma/opa_port_info.h?id=30103b5b6432a51c3822a26dc340e35d91237f39&amp;id2=1b5b42216469b05ef4b5916cb40b127dfab1da88'>diff</a>)</td></tr></table>
<div class='commit-subject'>regulator: Fix regulator_get_error_flags() signature mismatch</div><div class='commit-msg'>The function signature of does not match regulator_get_error_flags()
when CONFIG_REGULATOR is not defined vs. when it is not defined.
This makes both declarations match to prevent compiler errors.

Signed-off-by: David Lechner &lt;david@lechnology.com&gt;
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=30103b5b6432a51c3822a26dc340e35d91237f39'>Diffstat</a> (limited to 'include/rdma/opa_port_info.h')</div><table summary='diffstat' class='diffstat'>