/*
 * Serial port driver for BCM2835AUX UART
 *
 * Copyright (C) 2016 Martin Sperl <kernel@martin.sperl.org>
 *
 * Based on 8250_lpc18xx.c:
 * Copyright (C) 2015 Joachim Eastwood <manabian@gmail.com>
 *
 * 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/clk.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>

#include "8250.h"

struct bcm2835aux_data {
	struct uart_8250_port uart;
	struct clk *clk;
	int line;
};

static int bcm2835aux_serial_probe(struct platform_device *pdev)
{
	struct bcm2835aux_data *data;
	struct resource *res;
	int ret;

	/* allocate the custom structure */
	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
	if (!data)
		return -ENOMEM;

	/* initialize data */
	spin_lock_init(&data->uart.port.lock);
	data->uart.capabilities = UART_CAP_FIFO;
	data->uart.port.dev = &pdev->dev;
	data->uart.port.regshift = 2;
	data->uart.port.type = PORT_16550;
	data->uart.port.iotype = UPIO_MEM;
	data->uart.port.fifosize = 8;
	data->uart.port.flags = UPF_SHARE_IRQ |
				UPF_FIXED_PORT |
				UPF_FIXED_TYPE |
				UPF_SKIP_TEST;

	/* get the clock - this also enables the HW */
	data->clk = devm_clk_get(&pdev->dev, NULL);
	ret = PTR_ERR_OR_ZERO(data->clk);
	if (ret) {
		dev_err(&pdev->dev, "could not get clk: %d\n", ret);
		return ret;
	}

	/* get the interrupt */
	ret = platform_get_irq(pdev, 0);
	if (ret < 0) {
		dev_err(&pdev->dev, "irq not found - %i", ret);
		return ret;
	}
	data->uart.port.irq = ret;

	/* map the main registers */
	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		dev_err(&pdev->dev, "memory resource not found");
		return -EINVAL;
	}
	data->uart.port.membase = devm_ioremap_resource(&pdev->dev, res);
	ret = PTR_ERR_OR_ZERO(data->uart.port.membase);
	if (ret)
		return ret;

	/* Check for a fixed line number */
	ret = of_alias_get_id(pdev->dev.of_node, "serial");
	if (ret >= 0)
		data->uart.port.line = ret;

	/* enable the clock as a last step */
	ret = clk_prepare_enable(data->clk);
	if (ret) {
		dev_err(&pdev->dev, "unable to enable uart clock - %d\n",
			ret);
		return ret;
	}

	/* the HW-clock divider for bcm2835aux is 8,
	 * but 8250 expects a divider of 16,
	 * so we have to multiply the actual clock by 2
	 * to get identical baudrates.
	 */
	data->uart.port.uartclk = clk_get_rate(data->clk) * 2;

	/* register the port */
	ret = serial8250_register_8250_port(&data->uart);
	if (ret < 0) {
		dev_err(&pdev->dev, "unable to register 8250 port - %d\n",
			ret);
		goto dis_clk;
	}
	data->line = ret;

	platform_set_drvdata(pdev, data);

	return 0;

dis_clk:
	clk_disable_unprepare(data->clk);
	return ret;
}

static int bcm2835aux_serial_remove(struct platform_device *pdev)
{
	struct bcm2835aux_data *data = platform_get_drvdata(pdev);

	serial8250_unregister_port(data->uart.port.line);
	clk_disable_unprepare(data->clk);

	return 0;
}

static const struct of_device_id bcm2835aux_serial_match[] = {
	{ .compatible = "brcm,bcm2835-aux-uart" },
	{ },
};
MODULE_DEVICE_TABLE(of, bcm2835aux_serial_match);

static struct platform_driver bcm2835aux_serial_driver = {
	.driver = {
		.name = "bcm2835-aux-uart",
		.of_match_table = bcm2835aux_serial_match,
	},
	.probe  = bcm2835aux_serial_probe,
	.remove = bcm2835aux_serial_remove,
};
module_platform_driver(bcm2835aux_serial_driver);

MODULE_DESCRIPTION("BCM2835 auxiliar UART driver");
MODULE_AUTHOR("Martin Sperl <kernel@martin.sperl.org>");
MODULE_LICENSE("GPL v2");
on 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>Ard Biesheuvel &lt;ard.biesheuvel@linaro.org&gt;</td><td class='right'>2017-01-17 13:46:29 +0000</td></tr>
<tr><th>committer</th><td>Herbert Xu &lt;herbert@gondor.apana.org.au&gt;</td><td class='right'>2017-01-23 22:41:33 +0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/serial/pl2303.c?id=11e3b725cfc282efe9d4a354153e99d86a16af08'>11e3b725cfc282efe9d4a354153e99d86a16af08</a> (<a href='/cgit.cgi/linux/net-next.git/patch/drivers/usb/serial/pl2303.c?id=11e3b725cfc282efe9d4a354153e99d86a16af08'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=11e3b725cfc282efe9d4a354153e99d86a16af08'>8b5b9e0e1bcae1ab98ee652ffb7b13b05c209bd6</a> /<a href='/cgit.cgi/linux/net-next.git/tree/drivers/usb/serial/pl2303.c?id=11e3b725cfc282efe9d4a354153e99d86a16af08'>drivers/usb/serial/pl2303.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/serial/pl2303.c?id=d6040764adcb5cb6de1489422411d701c158bb69'>d6040764adcb5cb6de1489422411d701c158bb69</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/serial/pl2303.c?id=11e3b725cfc282efe9d4a354153e99d86a16af08&amp;id2=d6040764adcb5cb6de1489422411d701c158bb69'>diff</a>)</td></tr></table>
<div class='commit-subject'>crypto: arm64/aes-blk - honour iv_out requirement in CBC and CTR modes</div><div class='commit-msg'>Update the ARMv8 Crypto Extensions and the plain NEON AES implementations
in CBC and CTR modes to return the next IV back to the skcipher API client.
This is necessary for chaining to work correctly.

Note that for CTR, this is only done if the request is a round multiple of
the block size, since otherwise, chaining is impossible anyway.

Cc: &lt;stable@vger.kernel.org&gt; # v3.16+
Signed-off-by: Ard Biesheuvel &lt;ard.biesheuvel@linaro.org&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=11e3b725cfc282efe9d4a354153e99d86a16af08'>Diffstat</a> (limited to 'drivers/usb/serial/pl2303.c')</div><table summary='diffstat' class='diffstat'>