2008-11-13 14:33:14 +00:00
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/*
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* wm8728.c -- WM8728 ALSA SoC Audio driver
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*
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* Copyright 2008 Wolfson Microelectronics plc
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*
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* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/pm.h>
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#include <linux/i2c.h>
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#include <linux/platform_device.h>
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#include <linux/spi/spi.h>
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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 08:04:11 +00:00
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#include <linux/slab.h>
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2011-08-03 07:53:02 +00:00
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#include <linux/of_device.h>
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2008-11-13 14:33:14 +00:00
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/initval.h>
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#include <sound/tlv.h>
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#include "wm8728.h"
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/*
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* We can't read the WM8728 register space so we cache them instead.
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* Note that the defaults here aren't the physical defaults, we latch
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* the volume update bits, mute the output and enable infinite zero
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* detect.
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*/
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static const u16 wm8728_reg_defaults[] = {
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0x1ff,
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0x1ff,
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0x001,
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0x100,
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};
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2010-03-17 20:15:21 +00:00
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/* codec private data */
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struct wm8728_priv {
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enum snd_soc_control_type control_type;
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};
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2008-11-13 14:33:14 +00:00
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static const DECLARE_TLV_DB_SCALE(wm8728_tlv, -12750, 50, 1);
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static const struct snd_kcontrol_new wm8728_snd_controls[] = {
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SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8728_DACLVOL, WM8728_DACRVOL,
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0, 255, 0, wm8728_tlv),
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SOC_SINGLE("Deemphasis", WM8728_DACCTL, 1, 1, 0),
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};
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/*
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* DAPM controls.
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*/
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static const struct snd_soc_dapm_widget wm8728_dapm_widgets[] = {
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SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SND_SOC_NOPM, 0, 0),
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SND_SOC_DAPM_OUTPUT("VOUTL"),
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SND_SOC_DAPM_OUTPUT("VOUTR"),
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};
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2011-03-30 13:53:14 +00:00
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static const struct snd_soc_dapm_route wm8728_intercon[] = {
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2008-11-13 14:33:14 +00:00
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{"VOUTL", NULL, "DAC"},
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{"VOUTR", NULL, "DAC"},
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};
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static int wm8728_mute(struct snd_soc_dai *dai, int mute)
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{
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struct snd_soc_codec *codec = dai->codec;
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2009-07-05 16:24:50 +00:00
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u16 mute_reg = snd_soc_read(codec, WM8728_DACCTL);
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2008-11-13 14:33:14 +00:00
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if (mute)
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2009-07-05 16:24:50 +00:00
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snd_soc_write(codec, WM8728_DACCTL, mute_reg | 1);
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2008-11-13 14:33:14 +00:00
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else
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2009-07-05 16:24:50 +00:00
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snd_soc_write(codec, WM8728_DACCTL, mute_reg & ~1);
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2008-11-13 14:33:14 +00:00
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return 0;
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}
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static int wm8728_hw_params(struct snd_pcm_substream *substream,
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2008-11-18 22:11:38 +00:00
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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2008-11-13 14:33:14 +00:00
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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2010-03-17 20:15:21 +00:00
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struct snd_soc_codec *codec = rtd->codec;
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2009-07-05 16:24:50 +00:00
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u16 dac = snd_soc_read(codec, WM8728_DACCTL);
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2008-11-13 14:33:14 +00:00
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dac &= ~0x18;
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switch (params_format(params)) {
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case SNDRV_PCM_FORMAT_S16_LE:
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break;
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case SNDRV_PCM_FORMAT_S20_3LE:
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dac |= 0x10;
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break;
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case SNDRV_PCM_FORMAT_S24_LE:
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dac |= 0x08;
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break;
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default:
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return -EINVAL;
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}
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2009-07-05 16:24:50 +00:00
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snd_soc_write(codec, WM8728_DACCTL, dac);
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2008-11-13 14:33:14 +00:00
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return 0;
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}
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static int wm8728_set_dai_fmt(struct snd_soc_dai *codec_dai,
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unsigned int fmt)
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{
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struct snd_soc_codec *codec = codec_dai->codec;
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2009-07-05 16:24:50 +00:00
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u16 iface = snd_soc_read(codec, WM8728_IFCTL);
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2008-11-13 14:33:14 +00:00
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/* Currently only I2S is supported by the driver, though the
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* hardware is more flexible.
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*/
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switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_I2S:
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iface |= 1;
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break;
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default:
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return -EINVAL;
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}
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/* The hardware only support full slave mode */
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switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
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case SND_SOC_DAIFMT_CBS_CFS:
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break;
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default:
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return -EINVAL;
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}
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switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
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case SND_SOC_DAIFMT_NB_NF:
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iface &= ~0x22;
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break;
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case SND_SOC_DAIFMT_IB_NF:
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iface |= 0x20;
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iface &= ~0x02;
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break;
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case SND_SOC_DAIFMT_NB_IF:
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iface |= 0x02;
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iface &= ~0x20;
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break;
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case SND_SOC_DAIFMT_IB_IF:
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iface |= 0x22;
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break;
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default:
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return -EINVAL;
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}
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2009-07-05 16:24:50 +00:00
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snd_soc_write(codec, WM8728_IFCTL, iface);
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2008-11-13 14:33:14 +00:00
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return 0;
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}
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static int wm8728_set_bias_level(struct snd_soc_codec *codec,
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enum snd_soc_bias_level level)
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{
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u16 reg;
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int i;
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switch (level) {
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case SND_SOC_BIAS_ON:
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case SND_SOC_BIAS_PREPARE:
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case SND_SOC_BIAS_STANDBY:
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2010-11-05 13:53:46 +00:00
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if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
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2008-11-13 14:33:14 +00:00
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/* Power everything up... */
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2009-07-05 16:24:50 +00:00
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reg = snd_soc_read(codec, WM8728_DACCTL);
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snd_soc_write(codec, WM8728_DACCTL, reg & ~0x4);
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2008-11-13 14:33:14 +00:00
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/* ..then sync in the register cache. */
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for (i = 0; i < ARRAY_SIZE(wm8728_reg_defaults); i++)
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2009-07-05 16:24:50 +00:00
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snd_soc_write(codec, i,
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snd_soc_read(codec, i));
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2008-11-13 14:33:14 +00:00
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}
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break;
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case SND_SOC_BIAS_OFF:
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2009-07-05 16:24:50 +00:00
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reg = snd_soc_read(codec, WM8728_DACCTL);
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snd_soc_write(codec, WM8728_DACCTL, reg | 0x4);
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2008-11-13 14:33:14 +00:00
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break;
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}
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2010-11-05 13:53:46 +00:00
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codec->dapm.bias_level = level;
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2008-11-13 14:33:14 +00:00
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return 0;
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}
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#define WM8728_RATES (SNDRV_PCM_RATE_8000_192000)
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#define WM8728_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
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SNDRV_PCM_FMTBIT_S24_LE)
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2009-03-03 01:41:00 +00:00
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static struct snd_soc_dai_ops wm8728_dai_ops = {
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.hw_params = wm8728_hw_params,
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.digital_mute = wm8728_mute,
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.set_fmt = wm8728_set_dai_fmt,
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};
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2010-03-17 20:15:21 +00:00
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static struct snd_soc_dai_driver wm8728_dai = {
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.name = "wm8728-hifi",
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2008-11-13 14:33:14 +00:00
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.playback = {
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.stream_name = "Playback",
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.channels_min = 2,
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.channels_max = 2,
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.rates = WM8728_RATES,
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.formats = WM8728_FORMATS,
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},
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2009-03-03 01:41:00 +00:00
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.ops = &wm8728_dai_ops,
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2008-11-13 14:33:14 +00:00
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};
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2010-03-17 20:15:21 +00:00
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static int wm8728_suspend(struct snd_soc_codec *codec, pm_message_t state)
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2008-11-13 14:33:14 +00:00
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{
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wm8728_set_bias_level(codec, SND_SOC_BIAS_OFF);
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return 0;
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}
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2010-03-17 20:15:21 +00:00
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static int wm8728_resume(struct snd_soc_codec *codec)
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2008-11-13 14:33:14 +00:00
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{
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2010-05-07 19:30:00 +00:00
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wm8728_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
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2008-11-13 14:33:14 +00:00
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return 0;
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}
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2010-03-17 20:15:21 +00:00
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static int wm8728_probe(struct snd_soc_codec *codec)
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2008-11-13 14:33:14 +00:00
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{
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2010-03-17 20:15:21 +00:00
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struct wm8728_priv *wm8728 = snd_soc_codec_get_drvdata(codec);
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int ret;
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2008-11-13 14:33:14 +00:00
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2010-03-17 20:15:21 +00:00
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ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8728->control_type);
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2009-07-05 16:24:50 +00:00
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if (ret < 0) {
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printk(KERN_ERR "wm8728: failed to configure cache I/O: %d\n",
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ret);
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2010-03-17 20:15:21 +00:00
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return ret;
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2008-11-13 14:33:14 +00:00
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}
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/* power on device */
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wm8728_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
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2009-01-09 00:23:21 +00:00
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snd_soc_add_controls(codec, wm8728_snd_controls,
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ARRAY_SIZE(wm8728_snd_controls));
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2008-11-13 14:33:14 +00:00
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return ret;
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}
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2010-03-17 20:15:21 +00:00
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static int wm8728_remove(struct snd_soc_codec *codec)
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2008-11-13 14:33:14 +00:00
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{
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2010-03-17 20:15:21 +00:00
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wm8728_set_bias_level(codec, SND_SOC_BIAS_OFF);
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2008-11-13 14:33:14 +00:00
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return 0;
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}
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2010-03-17 20:15:21 +00:00
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static struct snd_soc_codec_driver soc_codec_dev_wm8728 = {
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.probe = wm8728_probe,
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.remove = wm8728_remove,
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.suspend = wm8728_suspend,
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.resume = wm8728_resume,
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.set_bias_level = wm8728_set_bias_level,
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2010-09-10 17:14:56 +00:00
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.reg_cache_size = ARRAY_SIZE(wm8728_reg_defaults),
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2010-03-17 20:15:21 +00:00
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.reg_word_size = sizeof(u16),
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.reg_cache_default = wm8728_reg_defaults,
|
2011-03-30 13:53:14 +00:00
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.dapm_widgets = wm8728_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(wm8728_dapm_widgets),
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.dapm_routes = wm8728_intercon,
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.num_dapm_routes = ARRAY_SIZE(wm8728_intercon),
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2008-11-13 14:33:14 +00:00
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};
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2011-08-03 07:53:02 +00:00
|
|
|
static const struct of_device_id wm8728_of_match[] = {
|
|
|
|
{ .compatible = "wlf,wm8728", },
|
|
|
|
{ }
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, wm8728_of_match);
|
|
|
|
|
2008-11-13 14:33:14 +00:00
|
|
|
#if defined(CONFIG_SPI_MASTER)
|
|
|
|
static int __devinit wm8728_spi_probe(struct spi_device *spi)
|
|
|
|
{
|
2010-03-17 20:15:21 +00:00
|
|
|
struct wm8728_priv *wm8728;
|
2008-11-13 14:33:14 +00:00
|
|
|
int ret;
|
|
|
|
|
2010-03-17 20:15:21 +00:00
|
|
|
wm8728 = kzalloc(sizeof(struct wm8728_priv), GFP_KERNEL);
|
|
|
|
if (wm8728 == NULL)
|
|
|
|
return -ENOMEM;
|
2008-11-13 14:33:14 +00:00
|
|
|
|
2010-03-17 20:15:21 +00:00
|
|
|
wm8728->control_type = SND_SOC_SPI;
|
|
|
|
spi_set_drvdata(spi, wm8728);
|
2008-11-13 14:33:14 +00:00
|
|
|
|
2010-03-17 20:15:21 +00:00
|
|
|
ret = snd_soc_register_codec(&spi->dev,
|
|
|
|
&soc_codec_dev_wm8728, &wm8728_dai, 1);
|
|
|
|
if (ret < 0)
|
|
|
|
kfree(wm8728);
|
2008-11-13 14:33:14 +00:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __devexit wm8728_spi_remove(struct spi_device *spi)
|
|
|
|
{
|
2010-03-17 20:15:21 +00:00
|
|
|
snd_soc_unregister_codec(&spi->dev);
|
|
|
|
kfree(spi_get_drvdata(spi));
|
2008-11-13 14:33:14 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct spi_driver wm8728_spi_driver = {
|
|
|
|
.driver = {
|
2011-08-03 07:52:10 +00:00
|
|
|
.name = "wm8728",
|
2008-11-13 14:33:14 +00:00
|
|
|
.owner = THIS_MODULE,
|
2011-08-03 07:53:02 +00:00
|
|
|
.of_match_table = wm8728_of_match,
|
2008-11-13 14:33:14 +00:00
|
|
|
},
|
|
|
|
.probe = wm8728_spi_probe,
|
|
|
|
.remove = __devexit_p(wm8728_spi_remove),
|
|
|
|
};
|
|
|
|
#endif /* CONFIG_SPI_MASTER */
|
|
|
|
|
2010-03-17 20:15:21 +00:00
|
|
|
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
|
|
|
|
static __devinit int wm8728_i2c_probe(struct i2c_client *i2c,
|
|
|
|
const struct i2c_device_id *id)
|
2008-11-13 14:33:14 +00:00
|
|
|
{
|
2010-03-17 20:15:21 +00:00
|
|
|
struct wm8728_priv *wm8728;
|
|
|
|
int ret;
|
2008-11-13 14:33:14 +00:00
|
|
|
|
2010-03-17 20:15:21 +00:00
|
|
|
wm8728 = kzalloc(sizeof(struct wm8728_priv), GFP_KERNEL);
|
|
|
|
if (wm8728 == NULL)
|
2008-11-13 14:33:14 +00:00
|
|
|
return -ENOMEM;
|
|
|
|
|
2010-03-17 20:15:21 +00:00
|
|
|
i2c_set_clientdata(i2c, wm8728);
|
|
|
|
wm8728->control_type = SND_SOC_I2C;
|
|
|
|
|
|
|
|
ret = snd_soc_register_codec(&i2c->dev,
|
|
|
|
&soc_codec_dev_wm8728, &wm8728_dai, 1);
|
|
|
|
if (ret < 0)
|
|
|
|
kfree(wm8728);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static __devexit int wm8728_i2c_remove(struct i2c_client *client)
|
|
|
|
{
|
|
|
|
snd_soc_unregister_codec(&client->dev);
|
|
|
|
kfree(i2c_get_clientdata(client));
|
|
|
|
return 0;
|
|
|
|
}
|
2008-11-13 14:33:14 +00:00
|
|
|
|
2010-03-17 20:15:21 +00:00
|
|
|
static const struct i2c_device_id wm8728_i2c_id[] = {
|
|
|
|
{ "wm8728", 0 },
|
|
|
|
{ }
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(i2c, wm8728_i2c_id);
|
|
|
|
|
|
|
|
static struct i2c_driver wm8728_i2c_driver = {
|
|
|
|
.driver = {
|
2011-08-03 07:52:10 +00:00
|
|
|
.name = "wm8728",
|
2010-03-17 20:15:21 +00:00
|
|
|
.owner = THIS_MODULE,
|
2011-08-03 07:53:02 +00:00
|
|
|
.of_match_table = wm8728_of_match,
|
2010-03-17 20:15:21 +00:00
|
|
|
},
|
|
|
|
.probe = wm8728_i2c_probe,
|
|
|
|
.remove = __devexit_p(wm8728_i2c_remove),
|
|
|
|
.id_table = wm8728_i2c_id,
|
|
|
|
};
|
|
|
|
#endif
|
2008-11-13 14:33:14 +00:00
|
|
|
|
2010-03-17 20:15:21 +00:00
|
|
|
static int __init wm8728_modinit(void)
|
|
|
|
{
|
|
|
|
int ret = 0;
|
2008-11-13 14:33:14 +00:00
|
|
|
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
|
2010-03-17 20:15:21 +00:00
|
|
|
ret = i2c_add_driver(&wm8728_i2c_driver);
|
|
|
|
if (ret != 0) {
|
|
|
|
printk(KERN_ERR "Failed to register wm8728 I2C driver: %d\n",
|
|
|
|
ret);
|
2008-11-13 14:33:14 +00:00
|
|
|
}
|
|
|
|
#endif
|
|
|
|
#if defined(CONFIG_SPI_MASTER)
|
2010-03-17 20:15:21 +00:00
|
|
|
ret = spi_register_driver(&wm8728_spi_driver);
|
|
|
|
if (ret != 0) {
|
|
|
|
printk(KERN_ERR "Failed to register wm8728 SPI driver: %d\n",
|
|
|
|
ret);
|
2008-11-13 14:33:14 +00:00
|
|
|
}
|
|
|
|
#endif
|
|
|
|
return ret;
|
|
|
|
}
|
2010-03-17 20:15:21 +00:00
|
|
|
module_init(wm8728_modinit);
|
2008-11-13 14:33:14 +00:00
|
|
|
|
2010-03-17 20:15:21 +00:00
|
|
|
static void __exit wm8728_exit(void)
|
2008-11-13 14:33:14 +00:00
|
|
|
{
|
|
|
|
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
|
|
|
|
i2c_del_driver(&wm8728_i2c_driver);
|
|
|
|
#endif
|
|
|
|
#if defined(CONFIG_SPI_MASTER)
|
|
|
|
spi_unregister_driver(&wm8728_spi_driver);
|
|
|
|
#endif
|
2008-12-08 19:17:58 +00:00
|
|
|
}
|
|
|
|
module_exit(wm8728_exit);
|
|
|
|
|
2008-11-13 14:33:14 +00:00
|
|
|
MODULE_DESCRIPTION("ASoC WM8728 driver");
|
|
|
|
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
|
|
|
|
MODULE_LICENSE("GPL");
|