/*
 * rl6347a.c - RL6347A class device shared support
 *
 * Copyright 2015 Realtek Semiconductor Corp.
 *
 * Author: Oder Chiou <oder_chiou@realtek.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/module.h>
#include <linux/i2c.h>
#include <linux/regmap.h>

#include "rl6347a.h"

int rl6347a_hw_write(void *context, unsigned int reg, unsigned int value)
{
	struct i2c_client *client = context;
	struct rl6347a_priv *rl6347a = i2c_get_clientdata(client);
	u8 data[4];
	int ret, i;

	/* handle index registers */
	if (reg <= 0xff) {
		rl6347a_hw_write(client, RL6347A_COEF_INDEX, reg);
		for (i = 0; i < rl6347a->index_cache_size; i++) {
			if (reg == rl6347a->index_cache[i].reg) {
				rl6347a->index_cache[i].def = value;
				break;
			}

		}
		reg = RL6347A_PROC_COEF;
	}

	data[0] = (reg >> 24) & 0xff;
	data[1] = (reg >> 16) & 0xff;
	/*
	 * 4 bit VID: reg should be 0
	 * 12 bit VID: value should be 0
	 * So we use an OR operator to handle it rather than use if condition.
	 */
	data[2] = ((reg >> 8) & 0xff) | ((value >> 8) & 0xff);
	data[3] = value & 0xff;

	ret = i2c_master_send(client, data, 4);

	if (ret == 4)
		return 0;
	else
		dev_err(&client->dev, "I2C error %d\n", ret);
	if (ret < 0)
		return ret;
	else
		return -EIO;
}
EXPORT_SYMBOL_GPL(rl6347a_hw_write);

int rl6347a_hw_read(void *context, unsigned int reg, unsigned int *value)
{
	struct i2c_client *client = context;
	struct i2c_msg xfer[2];
	int ret;
	__be32 be_reg;
	unsigned int index, vid, buf = 0x0;

	/* handle index registers */
	if (reg <= 0xff) {
		rl6347a_hw_write(client, RL6347A_COEF_INDEX, reg);
		reg = RL6347A_PROC_COEF;
	}

	reg = reg | 0x80000;
	vid = (reg >> 8) & 0xfff;

	if (AC_VERB_GET_AMP_GAIN_MUTE == (vid & 0xf00)) {
		index = (reg >> 8) & 0xf;
		reg = (reg & ~0xf0f) | index;
	}
	be_reg = cpu_to_be32(reg);

	/* Write register */
	xfer[0].addr = client->addr;
	xfer[0].flags = 0;
	xfer[0].len = 4;
	xfer[0].buf = (u8 *)&be_reg;

	/* Read data */
	xfer[1].addr = client->addr;
	xfer[1].flags = I2C_M_RD;
	xfer[1].len = 4;
	xfer[1].buf = (u8 *)&buf;

	ret = i2c_transfer(client->adapter, xfer, 2);
	if (ret < 0)
		return ret;
	else if (ret != 2)
		return -EIO;

	*value = be32_to_cpu(buf);

	return 0;
}
EXPORT_SYMBOL_GPL(rl6347a_hw_read);

MODULE_DESCRIPTION("RL6347A class device shared support");
MODULE_AUTHOR("Oder Chiou <oder_chiou@realtek.com>");
MODULE_LICENSE("GPL v2");
s='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='6aba74f2791287ec407e0f92487a725a25908067'/><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'>2011-03-30 09:35:52 -0700</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2011-03-30 09:35:52 -0700</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=6aba74f2791287ec407e0f92487a725a25908067'>6aba74f2791287ec407e0f92487a725a25908067</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=6aba74f2791287ec407e0f92487a725a25908067'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=6aba74f2791287ec407e0f92487a725a25908067'>5d1bb70820fee020e3365c40e204dd256a1f0a10</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=a8e498b768d912ad3e7069c86b86bdb821d43b5f'>a8e498b768d912ad3e7069c86b86bdb821d43b5f</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=6aba74f2791287ec407e0f92487a725a25908067&amp;id2=a8e498b768d912ad3e7069c86b86bdb821d43b5f'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=dd8ea6af1b9f4cedefb718dbfff60203c458d7ab'>dd8ea6af1b9f4cedefb718dbfff60203c458d7ab</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=6aba74f2791287ec407e0f92487a725a25908067&amp;id2=dd8ea6af1b9f4cedefb718dbfff60203c458d7ab'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip</div><div class='commit-msg'>* 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  avr32: Fix missing irq namespace conversion
  powerpc: qe_ic: Rename get_irq_desc_data and get_irq_desc_chip
  genirq: Remove the now obsolete config options and select statements
  arm: versatile : Fix typo introduced in irq namespace cleanup
  sound: Fixup the last user of the old irq functions
  genirq: Remove obsolete comment
  genirq: Remove now obsolete set_irq_wake()
  sh: Fix irq cleanup fallout
  x86: apb_timer: Fixup genirq fallout
  genirq: Fix misnamed label in handle_edge_eoi_irq

Fix up crazy conflict in arch/powerpc/include/asm/qe_ic.h:

 - commit eead4d5c63ff ("powerpc: qe_ic: Rename get_irq_desc_data and
   get_irq_desc_chip") made the helper functions use
   irq_desc_get_handler_data() instead of the legacy (and no longer
   existing) get_irq_desc_data.

 - commit d4db35e8dc96 ("powerpc/qe_ic: Fix another breakage from the
   irq_data conversion") used irq_desc_get_chip_data() instead.

According to Thomas, the former is the correct direct conversion, but it
does look like both should work (arch/powerpc/sysdev/qe_lib/qe_ic.c
seems to initialize both to the same thing), and the chip data in some
ways is the more logical.  Somebody should really decide on one of the
other.

This merge picks irq_desc_get_handler_data() as the straightforward pure
conversion to new names, as per Thomas.
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=6aba74f2791287ec407e0f92487a725a25908067'>Diffstat</a></div><table summary='diffstat' class='diffstat'>