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* n810.c -- SoC audio for Nokia N810
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* Copyright (C) 2008 Nokia Corporation
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* Contact: Jarkko Nikula <jhnikula@gmail.com>
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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#include <linux/clk.h>
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#include <linux/i2c.h>
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#include <linux/platform_device.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <asm/mach-types.h>
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#include <mach/hardware.h>
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#include <linux/gpio.h>
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#include <plat/mcbsp.h>
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#include "omap-mcbsp.h"
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#include "../codecs/tlv320aic3x.h"
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#define N810_HEADSET_AMP_GPIO 10
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#define N810_SPEAKER_AMP_GPIO 101
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static struct clk *sys_clkout2;
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static struct clk *sys_clkout2_src;
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static struct clk *func96m_clk;
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static int n810_spk_func;
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static int n810_jack_func;
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static int n810_dmic_func;
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static void n810_ext_control(struct snd_soc_codec *codec)
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int hp = 0, line1l = 0;
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switch (n810_jack_func) {
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snd_soc_dapm_enable_pin(codec, "Ext Spk");
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snd_soc_dapm_disable_pin(codec, "Ext Spk");
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snd_soc_dapm_enable_pin(codec, "Headphone Jack");
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snd_soc_dapm_disable_pin(codec, "Headphone Jack");
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snd_soc_dapm_enable_pin(codec, "LINE1L");
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snd_soc_dapm_disable_pin(codec, "LINE1L");
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snd_soc_dapm_enable_pin(codec, "DMic");
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snd_soc_dapm_disable_pin(codec, "DMic");
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snd_soc_dapm_sync(codec);
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static int n810_startup(struct snd_pcm_substream *substream)
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struct snd_pcm_runtime *runtime = substream->runtime;
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_codec *codec = rtd->socdev->card->codec;
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snd_pcm_hw_constraint_minmax(runtime,
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SNDRV_PCM_HW_PARAM_CHANNELS, 2, 2);
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n810_ext_control(codec);
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return clk_enable(sys_clkout2);
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static void n810_shutdown(struct snd_pcm_substream *substream)
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clk_disable(sys_clkout2);
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static int n810_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
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struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
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/* Set codec DAI configuration */
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err = snd_soc_dai_set_fmt(codec_dai,
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SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBM_CFM);
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/* Set cpu DAI configuration */
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err = snd_soc_dai_set_fmt(cpu_dai,
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SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBM_CFM);
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/* Set the codec system clock for DAC and ADC */
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err = snd_soc_dai_set_sysclk(codec_dai, 0, 12000000,
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static struct snd_soc_ops n810_ops = {
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.startup = n810_startup,
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.hw_params = n810_hw_params,
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.shutdown = n810_shutdown,
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static int n810_get_spk(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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ucontrol->value.integer.value[0] = n810_spk_func;
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static int n810_set_spk(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
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if (n810_spk_func == ucontrol->value.integer.value[0])
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n810_spk_func = ucontrol->value.integer.value[0];
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n810_ext_control(codec);
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static int n810_get_jack(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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ucontrol->value.integer.value[0] = n810_jack_func;
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static int n810_set_jack(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
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if (n810_jack_func == ucontrol->value.integer.value[0])
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n810_jack_func = ucontrol->value.integer.value[0];
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n810_ext_control(codec);
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static int n810_get_input(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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ucontrol->value.integer.value[0] = n810_dmic_func;
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static int n810_set_input(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
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if (n810_dmic_func == ucontrol->value.integer.value[0])
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n810_dmic_func = ucontrol->value.integer.value[0];
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n810_ext_control(codec);
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static int n810_spk_event(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *k, int event)
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if (SND_SOC_DAPM_EVENT_ON(event))
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gpio_set_value(N810_SPEAKER_AMP_GPIO, 1);
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gpio_set_value(N810_SPEAKER_AMP_GPIO, 0);
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static int n810_jack_event(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *k, int event)
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if (SND_SOC_DAPM_EVENT_ON(event))
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gpio_set_value(N810_HEADSET_AMP_GPIO, 1);
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gpio_set_value(N810_HEADSET_AMP_GPIO, 0);
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static const struct snd_soc_dapm_widget aic33_dapm_widgets[] = {
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SND_SOC_DAPM_SPK("Ext Spk", n810_spk_event),
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SND_SOC_DAPM_HP("Headphone Jack", n810_jack_event),
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SND_SOC_DAPM_MIC("DMic", NULL),
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static const struct snd_soc_dapm_route audio_map[] = {
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{"Headphone Jack", NULL, "HPLOUT"},
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{"Headphone Jack", NULL, "HPROUT"},
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{"Ext Spk", NULL, "LLOUT"},
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{"Ext Spk", NULL, "RLOUT"},
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{"DMic Rate 64", NULL, "Mic Bias 2V"},
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{"Mic Bias 2V", NULL, "DMic"},
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static const char *spk_function[] = {"Off", "On"};
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static const char *jack_function[] = {"Off", "Headphone", "Headset", "Mic"};
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static const char *input_function[] = {"ADC", "Digital Mic"};
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static const struct soc_enum n810_enum[] = {
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SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
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SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
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SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
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static const struct snd_kcontrol_new aic33_n810_controls[] = {
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SOC_ENUM_EXT("Speaker Function", n810_enum[0],
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n810_get_spk, n810_set_spk),
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SOC_ENUM_EXT("Jack Function", n810_enum[1],
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n810_get_jack, n810_set_jack),
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SOC_ENUM_EXT("Input Select", n810_enum[2],
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n810_get_input, n810_set_input),
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static int n810_aic33_init(struct snd_soc_codec *codec)
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snd_soc_dapm_nc_pin(codec, "MONO_LOUT");
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snd_soc_dapm_nc_pin(codec, "HPLCOM");
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snd_soc_dapm_nc_pin(codec, "HPRCOM");
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snd_soc_dapm_nc_pin(codec, "MIC3L");
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snd_soc_dapm_nc_pin(codec, "MIC3R");
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snd_soc_dapm_nc_pin(codec, "LINE1R");
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snd_soc_dapm_nc_pin(codec, "LINE2L");
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snd_soc_dapm_nc_pin(codec, "LINE2R");
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/* Add N810 specific controls */
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err = snd_soc_add_controls(codec, aic33_n810_controls,
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ARRAY_SIZE(aic33_n810_controls));
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/* Add N810 specific widgets */
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snd_soc_dapm_new_controls(codec, aic33_dapm_widgets,
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ARRAY_SIZE(aic33_dapm_widgets));
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/* Set up N810 specific audio path audio_map */
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snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
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snd_soc_dapm_sync(codec);
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/* Digital audio interface glue - connects codec <--> CPU */
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static struct snd_soc_dai_link n810_dai = {
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.name = "TLV320AIC33",
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.stream_name = "AIC33",
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.cpu_dai = &omap_mcbsp_dai[0],
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.codec_dai = &aic3x_dai,
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.init = n810_aic33_init,
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/* Audio machine driver */
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static struct snd_soc_card snd_soc_n810 = {
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.platform = &omap_soc_platform,
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.dai_link = &n810_dai,
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/* Audio private data */
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static struct aic3x_setup_data n810_aic33_setup = {
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.gpio_func[0] = AIC3X_GPIO1_FUNC_DISABLED,
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.gpio_func[1] = AIC3X_GPIO2_FUNC_DIGITAL_MIC_INPUT,
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/* Audio subsystem */
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static struct snd_soc_device n810_snd_devdata = {
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.card = &snd_soc_n810,
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.codec_dev = &soc_codec_dev_aic3x,
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.codec_data = &n810_aic33_setup,
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static struct platform_device *n810_snd_device;
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/* temporary i2c device creation until this can be moved into the machine
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static struct i2c_board_info i2c_device[] = {
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{ I2C_BOARD_INFO("tlv320aic3x", 0x1b), }
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static int __init n810_soc_init(void)
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if (!(machine_is_nokia_n810() || machine_is_nokia_n810_wimax()))
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i2c_register_board_info(1, i2c_device, ARRAY_SIZE(i2c_device));
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n810_snd_device = platform_device_alloc("soc-audio", -1);
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if (!n810_snd_device)
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platform_set_drvdata(n810_snd_device, &n810_snd_devdata);
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n810_snd_devdata.dev = &n810_snd_device->dev;
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*(unsigned int *)n810_dai.cpu_dai->private_data = 1; /* McBSP2 */
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err = platform_device_add(n810_snd_device);
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dev = &n810_snd_device->dev;
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sys_clkout2_src = clk_get(dev, "sys_clkout2_src");
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if (IS_ERR(sys_clkout2_src)) {
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dev_err(dev, "Could not get sys_clkout2_src clock\n");
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err = PTR_ERR(sys_clkout2_src);
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sys_clkout2 = clk_get(dev, "sys_clkout2");
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if (IS_ERR(sys_clkout2)) {
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dev_err(dev, "Could not get sys_clkout2\n");
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err = PTR_ERR(sys_clkout2);
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* Configure 12 MHz output on SYS_CLKOUT2. Therefore we must use
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* 96 MHz as its parent in order to get 12 MHz
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func96m_clk = clk_get(dev, "func_96m_ck");
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if (IS_ERR(func96m_clk)) {
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dev_err(dev, "Could not get func 96M clock\n");
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err = PTR_ERR(func96m_clk);
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clk_set_parent(sys_clkout2_src, func96m_clk);
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clk_set_rate(sys_clkout2, 12000000);
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BUG_ON((gpio_request(N810_HEADSET_AMP_GPIO, "hs_amp") < 0) ||
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(gpio_request(N810_SPEAKER_AMP_GPIO, "spk_amp") < 0));
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gpio_direction_output(N810_HEADSET_AMP_GPIO, 0);
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gpio_direction_output(N810_SPEAKER_AMP_GPIO, 0);
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clk_put(sys_clkout2);
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clk_put(sys_clkout2_src);
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platform_device_del(n810_snd_device);
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platform_device_put(n810_snd_device);
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static void __exit n810_soc_exit(void)
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gpio_free(N810_SPEAKER_AMP_GPIO);
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gpio_free(N810_HEADSET_AMP_GPIO);
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clk_put(sys_clkout2_src);
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clk_put(sys_clkout2);
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clk_put(func96m_clk);
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platform_device_unregister(n810_snd_device);
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module_init(n810_soc_init);
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module_exit(n810_soc_exit);
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MODULE_AUTHOR("Jarkko Nikula <jhnikula@gmail.com>");
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MODULE_DESCRIPTION("ALSA SoC Nokia N810");
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MODULE_LICENSE("GPL");