/*
 * 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");
963e61f19021f2'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/misc/emi62.c?h=nds-private-remove&amp;id=396bf4cd835e62d70fad4a03a8963e61f19021f2'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/drivers/usb/misc/emi62.c'>
<input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='396bf4cd835e62d70fad4a03a8963e61f19021f2'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=396bf4cd835e62d70fad4a03a8963e61f19021f2'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers?h=nds-private-remove&amp;id=396bf4cd835e62d70fad4a03a8963e61f19021f2'>drivers</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb?h=nds-private-remove&amp;id=396bf4cd835e62d70fad4a03a8963e61f19021f2'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/misc?h=nds-private-remove&amp;id=396bf4cd835e62d70fad4a03a8963e61f19021f2'>misc</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/misc/emi62.c?h=nds-private-remove&amp;id=396bf4cd835e62d70fad4a03a8963e61f19021f2'>emi62.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='396bf4cd835e62d70fad4a03a8963e61f19021f2'/><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>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-02-06 14:16:23 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-02-06 14:16:23 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/misc/emi62.c?h=nds-private-remove&amp;id=396bf4cd835e62d70fad4a03a8963e61f19021f2'>396bf4cd835e62d70fad4a03a8963e61f19021f2</a> (<a href='/cgit.cgi/linux/net-next.git/patch/drivers/usb/misc/emi62.c?id=396bf4cd835e62d70fad4a03a8963e61f19021f2'>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=396bf4cd835e62d70fad4a03a8963e61f19021f2'>79ac8f33554260fea1a8d43e6f8c4c5460115f45</a> /<a href='/cgit.cgi/linux/net-next.git/tree/drivers/usb/misc/emi62.c?h=nds-private-remove&amp;id=396bf4cd835e62d70fad4a03a8963e61f19021f2'>drivers/usb/misc/emi62.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/misc/emi62.c?h=nds-private-remove&amp;id=d5adbfcd5f7bcc6fa58a41c5c5ada0e5c826ce2c'>d5adbfcd5f7bcc6fa58a41c5c5ada0e5c826ce2c</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/misc/emi62.c?h=nds-private-remove&amp;id=396bf4cd835e62d70fad4a03a8963e61f19021f2&amp;id2=d5adbfcd5f7bcc6fa58a41c5c5ada0e5c826ce2c'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/misc/emi62.c?h=nds-private-remove&amp;id=7c2cf1c4615cc2f576d0604406cdf0065f00b83b'>7c2cf1c4615cc2f576d0604406cdf0065f00b83b</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/misc/emi62.c?h=nds-private-remove&amp;id=396bf4cd835e62d70fad4a03a8963e61f19021f2&amp;id2=7c2cf1c4615cc2f576d0604406cdf0065f00b83b'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6</div><div class='commit-msg'>Pull crypto fixes from Herbert Xu:

 - use-after-free in algif_aead

 - modular aesni regression when pcbc is modular but absent

 - bug causing IO page faults in ccp

 - double list add in ccp

 - NULL pointer dereference in qat (two patches)

 - panic in chcr

 - NULL pointer dereference in chcr

 - out-of-bound access in chcr

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: chcr - Fix key length for RFC4106
  crypto: algif_aead - Fix kernel panic on list_del
  crypto: aesni - Fix failure when pcbc module is absent
  crypto: ccp - Fix double add when creating new DMA command
  crypto: ccp - Fix DMA operations when IOMMU is enabled
  crypto: chcr - Check device is allocated before use
  crypto: chcr - Fix panic on dma_unmap_sg
  crypto: qat - zero esram only for DH85x devices
  crypto: qat - fix bar discovery for c62x
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=396bf4cd835e62d70fad4a03a8963e61f19021f2'>Diffstat</a> (limited to 'drivers/usb/misc/emi62.c')</div><table summary='diffstat' class='diffstat'>