/*
 *   ALSA driver for ICEnsemble VT1724 (Envy24HT)
 *
 *   Lowlevel functions for Advanced Micro Peripherals Ltd AUDIO2000
 *
 *	Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
 *
 *   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.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */      

#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <sound/core.h>

#include "ice1712.h"
#include "envy24ht.h"
#include "amp.h"

static void wm_put(struct snd_ice1712 *ice, int reg, unsigned short val)
{
	unsigned short cval;
	cval = (reg << 9) | val;
	snd_vt1724_write_i2c(ice, WM_DEV, cval >> 8, cval & 0xff);
}

static int snd_vt1724_amp_init(struct snd_ice1712 *ice)
{
	static const unsigned short wm_inits[] = {
		WM_ATTEN_L,	0x0000,	/* 0 db */
		WM_ATTEN_R,	0x0000,	/* 0 db */
		WM_DAC_CTRL,	0x0008,	/* 24bit I2S */
		WM_INT_CTRL,	0x0001, /* 24bit I2S */	
	};

	unsigned int i;

	/* only use basic functionality for now */

	/* VT1616 6ch codec connected to PSDOUT0 using packed mode */
	ice->num_total_dacs = 6;
	ice->num_total_adcs = 2;

	/* Chaintech AV-710 has another WM8728 codec connected to PSDOUT4
	   (shared with the SPDIF output). Mixer control for this codec
	   is not yet supported. */
	if (ice->eeprom.subvendor == VT1724_SUBDEVICE_AV710) {
		for (i = 0; i < ARRAY_SIZE(wm_inits); i += 2)
			wm_put(ice, wm_inits[i], wm_inits[i+1]);
	}

	return 0;
}

static int snd_vt1724_amp_add_controls(struct snd_ice1712 *ice)
{
	if (ice->ac97)
		/* we use pins 39 and 41 of the VT1616 for left and right
		read outputs */
		snd_ac97_write_cache(ice->ac97, 0x5a,
			snd_ac97_read(ice->ac97, 0x5a) & ~0x8000);
	return 0;
}


/* entry point */
struct snd_ice1712_card_info snd_vt1724_amp_cards[] = {
	{
		.subvendor = VT1724_SUBDEVICE_AV710,
		.name = "Chaintech AV-710",
		.model = "av710",
		.chip_init = snd_vt1724_amp_init,
		.build_controls = snd_vt1724_amp_add_controls,
	},
	{
		.subvendor = VT1724_SUBDEVICE_AUDIO2000,
		.name = "AMP Ltd AUDIO2000",
		.model = "amp2000",
		.chip_init = snd_vt1724_amp_init,
		.build_controls = snd_vt1724_amp_add_controls,
	},
	{ } /* terminator */
};

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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?h=nds-private-remove&amp;id=0d4b729dac35bb265533c79b554578a5ec6df384'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers?h=nds-private-remove&amp;id=0d4b729dac35bb265533c79b554578a5ec6df384'>drivers</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb?h=nds-private-remove&amp;id=0d4b729dac35bb265533c79b554578a5ec6df384'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/image?h=nds-private-remove&amp;id=0d4b729dac35bb265533c79b554578a5ec6df384'>image</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/image/microtek.c?h=nds-private-remove&amp;id=0d4b729dac35bb265533c79b554578a5ec6df384'>microtek.c</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/image/microtek.c?h=nds-private-remove&amp;id=0d4b729dac35bb265533c79b554578a5ec6df384&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
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<tr><th>author</th><td>Jiri Kosina &lt;jkosina@suse.cz&gt;</td><td class='right'>2017-01-27 22:25:52 +0000</td></tr>
<tr><th>committer</th><td>Ingo Molnar &lt;mingo@kernel.org&gt;</td><td class='right'>2017-01-28 09:18:56 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/parisc/Makefile?h=nds-private-remove&amp;id=bf29bddf0417a4783da3b24e8c9e017ac649326f'>bf29bddf0417a4783da3b24e8c9e017ac649326f</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/parisc/Makefile?id=bf29bddf0417a4783da3b24e8c9e017ac649326f'>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=bf29bddf0417a4783da3b24e8c9e017ac649326f'>54a05a4883b73f80e4e1d8c4b15750aa01c39932</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/parisc/Makefile?h=nds-private-remove&amp;id=bf29bddf0417a4783da3b24e8c9e017ac649326f'>sound/parisc/Makefile</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/parisc/Makefile?h=nds-private-remove&amp;id=883af14e67e8b8702b5560aa64c888c0cd0bd66c'>883af14e67e8b8702b5560aa64c888c0cd0bd66c</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/parisc/Makefile?h=nds-private-remove&amp;id=bf29bddf0417a4783da3b24e8c9e017ac649326f&amp;id2=883af14e67e8b8702b5560aa64c888c0cd0bd66c'>diff</a>)</td></tr></table>
<div class='commit-subject'>x86/efi: Always map the first physical page into the EFI pagetables</div><div class='commit-msg'>Commit:

  129766708 ("x86/efi: Only map RAM into EFI page tables if in mixed-mode")

stopped creating 1:1 mappings for all RAM, when running in native 64-bit mode.

It turns out though that there are 64-bit EFI implementations in the wild
(this particular problem has been reported on a Lenovo Yoga 710-11IKB),
which still make use of the first physical page for their own private use,
even though they explicitly mark it EFI_CONVENTIONAL_MEMORY in the memory
map.

In case there is no mapping for this particular frame in the EFI pagetables,
as soon as firmware tries to make use of it, a triple fault occurs and the
system reboots (in case of the Yoga 710-11IKB this is very early during bootup).

Fix that by always mapping the first page of physical memory into the EFI
pagetables. We're free to hand this page to the BIOS, as trim_bios_range()
will reserve the first page and isolate it away from memory allocators anyway.

Note that just reverting 129766708 alone is not enough on v4.9-rc1+ to fix the
regression on affected hardware, as this commit:

   ab72a27da ("x86/efi: Consolidate region mapping logic")

later made the first physical frame not to be mapped anyway.

Reported-by: Hanka Pavlikova &lt;hanka@ucw.cz&gt;
Signed-off-by: Jiri Kosina &lt;jkosina@suse.cz&gt;
Signed-off-by: Matt Fleming &lt;matt@codeblueprint.co.uk&gt;
Cc: Ard Biesheuvel &lt;ard.biesheuvel@linaro.org&gt;
Cc: Borislav Petkov &lt;bp@alien8.de&gt;
Cc: Borislav Petkov &lt;bp@suse.de&gt;
Cc: Laura Abbott &lt;labbott@redhat.com&gt;
Cc: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
Cc: Peter Zijlstra &lt;peterz@infradead.org&gt;
Cc: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Cc: Vojtech Pavlik &lt;vojtech@ucw.cz&gt;
Cc: Waiman Long &lt;waiman.long@hpe.com&gt;
Cc: linux-efi@vger.kernel.org
Cc: stable@kernel.org # v4.8+
Fixes: 129766708 ("x86/efi: Only map RAM into EFI page tables if in mixed-mode")
Link: http://lkml.kernel.org/r/20170127222552.22336-1-matt@codeblueprint.co.uk
[ Tidied up the changelog and the comment. ]
Signed-off-by: Ingo Molnar &lt;mingo@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=bf29bddf0417a4783da3b24e8c9e017ac649326f'>Diffstat</a> (limited to 'sound/parisc/Makefile')</div><table summary='diffstat' class='diffstat'>