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421 lines
13 KiB
421 lines
13 KiB
/* |
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* ASoC Driver for RRA DigiDAC1 |
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* Copyright 2016 |
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* Author: José M. Tasende <[email protected]> |
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* based on the HifiBerry DAC driver by Florian Meier <[email protected]> |
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* and the Wolfson card driver by Nikesh Oswal, <[email protected]> |
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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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* |
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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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*/ |
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|
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#include <linux/module.h> |
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#include <linux/platform_device.h> |
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#include <linux/i2c.h> |
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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/jack.h> |
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#include <sound/soc-dapm.h> |
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#include <sound/tlv.h> |
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#include <linux/regulator/consumer.h> |
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|
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#include "../codecs/wm8804.h" |
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#include "../codecs/wm8741.h" |
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|
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#define WM8741_NUM_SUPPLIES 2 |
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|
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/* codec private data */ |
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struct wm8741_priv { |
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struct wm8741_platform_data pdata; |
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struct regmap *regmap; |
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struct regulator_bulk_data supplies[WM8741_NUM_SUPPLIES]; |
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unsigned int sysclk; |
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const struct snd_pcm_hw_constraint_list *sysclk_constraints; |
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}; |
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static int samplerate = 44100; |
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|
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/* New Alsa Controls not exposed by original wm8741 codec driver */ |
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/* in actual driver the att. adjustment is wrong because */ |
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/* this DAC has a coarse attenuation register with 4dB steps */ |
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/* and a fine level register with 0.125dB steps */ |
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/* each register has 32 steps so combining both we have 1024 steps */ |
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/* of 0.125 dB. */ |
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/* The original level controls from driver are removed at startup */ |
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/* and replaced by the corrected ones. */ |
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/* The same wm8741 driver can be used for wm8741 and wm8742 devices */ |
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static const DECLARE_TLV_DB_SCALE(dac_tlv_fine, 0, 13, 0); |
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static const DECLARE_TLV_DB_SCALE(dac_tlv_coarse, -12700, 400, 1); |
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static const char *w8741_dither[4] = {"Off", "RPDF", "TPDF", "HPDF"}; |
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static const char *w8741_filter[5] = { |
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"Type 1", "Type 2", "Type 3", "Type 4", "Type 5"}; |
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static const char *w8741_switch[2] = {"Off", "On"}; |
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static const struct soc_enum w8741_enum[] = { |
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SOC_ENUM_SINGLE(WM8741_MODE_CONTROL_2, 0, 4, w8741_dither),/* dithering type */ |
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SOC_ENUM_SINGLE(WM8741_FILTER_CONTROL, 0, 5, w8741_filter),/* filter type */ |
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SOC_ENUM_SINGLE(WM8741_FORMAT_CONTROL, 6, 2, w8741_switch),/* phase invert */ |
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SOC_ENUM_SINGLE(WM8741_VOLUME_CONTROL, 0, 2, w8741_switch),/* volume ramp */ |
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SOC_ENUM_SINGLE(WM8741_VOLUME_CONTROL, 3, 2, w8741_switch),/* soft mute */ |
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}; |
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static const struct snd_kcontrol_new w8741_snd_controls_stereo[] = { |
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SOC_DOUBLE_R_TLV("DAC Fine Playback Volume", WM8741_DACLLSB_ATTENUATION, |
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WM8741_DACRLSB_ATTENUATION, 0, 31, 1, dac_tlv_fine), |
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SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8741_DACLMSB_ATTENUATION, |
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WM8741_DACRMSB_ATTENUATION, 0, 31, 1, dac_tlv_coarse), |
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SOC_ENUM("DAC Dither", w8741_enum[0]), |
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SOC_ENUM("DAC Digital Filter", w8741_enum[1]), |
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SOC_ENUM("DAC Phase Invert", w8741_enum[2]), |
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SOC_ENUM("DAC Volume Ramp", w8741_enum[3]), |
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SOC_ENUM("DAC Soft Mute", w8741_enum[4]), |
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}; |
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static const struct snd_kcontrol_new w8741_snd_controls_mono_left[] = { |
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SOC_SINGLE_TLV("DAC Fine Playback Volume", WM8741_DACLLSB_ATTENUATION, |
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0, 31, 0, dac_tlv_fine), |
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SOC_SINGLE_TLV("Digital Playback Volume", WM8741_DACLMSB_ATTENUATION, |
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0, 31, 1, dac_tlv_coarse), |
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SOC_ENUM("DAC Dither", w8741_enum[0]), |
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SOC_ENUM("DAC Digital Filter", w8741_enum[1]), |
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SOC_ENUM("DAC Phase Invert", w8741_enum[2]), |
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SOC_ENUM("DAC Volume Ramp", w8741_enum[3]), |
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SOC_ENUM("DAC Soft Mute", w8741_enum[4]), |
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}; |
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static const struct snd_kcontrol_new w8741_snd_controls_mono_right[] = { |
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SOC_SINGLE_TLV("DAC Fine Playback Volume", WM8741_DACRLSB_ATTENUATION, |
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0, 31, 0, dac_tlv_fine), |
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SOC_SINGLE_TLV("Digital Playback Volume", WM8741_DACRMSB_ATTENUATION, |
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0, 31, 1, dac_tlv_coarse), |
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SOC_ENUM("DAC Dither", w8741_enum[0]), |
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SOC_ENUM("DAC Digital Filter", w8741_enum[1]), |
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SOC_ENUM("DAC Phase Invert", w8741_enum[2]), |
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SOC_ENUM("DAC Volume Ramp", w8741_enum[3]), |
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SOC_ENUM("DAC Soft Mute", w8741_enum[4]), |
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}; |
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static int w8741_add_controls(struct snd_soc_component *component) |
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{ |
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struct wm8741_priv *wm8741 = snd_soc_component_get_drvdata(component); |
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switch (wm8741->pdata.diff_mode) { |
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case WM8741_DIFF_MODE_STEREO: |
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case WM8741_DIFF_MODE_STEREO_REVERSED: |
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snd_soc_add_component_controls(component, |
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w8741_snd_controls_stereo, |
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ARRAY_SIZE(w8741_snd_controls_stereo)); |
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break; |
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case WM8741_DIFF_MODE_MONO_LEFT: |
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snd_soc_add_component_controls(component, |
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w8741_snd_controls_mono_left, |
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ARRAY_SIZE(w8741_snd_controls_mono_left)); |
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break; |
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case WM8741_DIFF_MODE_MONO_RIGHT: |
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snd_soc_add_component_controls(component, |
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w8741_snd_controls_mono_right, |
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ARRAY_SIZE(w8741_snd_controls_mono_right)); |
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break; |
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default: |
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return -EINVAL; |
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} |
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return 0; |
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} |
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static int digidac1_soundcard_init(struct snd_soc_pcm_runtime *rtd) |
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{ |
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struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component; |
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struct snd_soc_card *card = rtd->card; |
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struct snd_soc_pcm_runtime *wm8741_rtd; |
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struct snd_soc_component *wm8741_component; |
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struct snd_card *sound_card = card->snd_card; |
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struct snd_kcontrol *kctl; |
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int ret; |
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wm8741_rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[1]); |
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if (!wm8741_rtd) { |
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dev_warn(card->dev, "digidac1_soundcard_init: couldn't get wm8741 rtd\n"); |
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return -EFAULT; |
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} |
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wm8741_component = asoc_rtd_to_codec(wm8741_rtd, 0)->component; |
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ret = w8741_add_controls(wm8741_component); |
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if (ret < 0) |
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dev_warn(card->dev, "Failed to add new wm8741 controls: %d\n", |
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ret); |
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/* enable TX output */ |
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snd_soc_component_update_bits(component, WM8804_PWRDN, 0x4, 0x0); |
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kctl = snd_soc_card_get_kcontrol(card, |
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"Playback Volume"); |
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if (kctl) { |
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kctl->vd[0].access = SNDRV_CTL_ELEM_ACCESS_READWRITE; |
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snd_ctl_remove(sound_card, kctl); |
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} |
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kctl = snd_soc_card_get_kcontrol(card, |
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"Fine Playback Volume"); |
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if (kctl) { |
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kctl->vd[0].access = SNDRV_CTL_ELEM_ACCESS_READWRITE; |
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snd_ctl_remove(sound_card, kctl); |
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} |
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return 0; |
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} |
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static int digidac1_soundcard_startup(struct snd_pcm_substream *substream) |
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{ |
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/* turn on wm8804 digital output */ |
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struct snd_soc_pcm_runtime *rtd = substream->private_data; |
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struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component; |
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struct snd_soc_card *card = rtd->card; |
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struct snd_soc_pcm_runtime *wm8741_rtd; |
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struct snd_soc_component *wm8741_component; |
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snd_soc_component_update_bits(component, WM8804_PWRDN, 0x3c, 0x00); |
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wm8741_rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[1]); |
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if (!wm8741_rtd) { |
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dev_warn(card->dev, "digidac1_soundcard_startup: couldn't get WM8741 rtd\n"); |
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return -EFAULT; |
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} |
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wm8741_component = asoc_rtd_to_codec(wm8741_rtd, 0)->component; |
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/* latch wm8741 level */ |
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snd_soc_component_update_bits(wm8741_component, WM8741_DACLLSB_ATTENUATION, |
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WM8741_UPDATELL, WM8741_UPDATELL); |
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snd_soc_component_update_bits(wm8741_component, WM8741_DACLMSB_ATTENUATION, |
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WM8741_UPDATELM, WM8741_UPDATELM); |
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snd_soc_component_update_bits(wm8741_component, WM8741_DACRLSB_ATTENUATION, |
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WM8741_UPDATERL, WM8741_UPDATERL); |
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snd_soc_component_update_bits(wm8741_component, WM8741_DACRMSB_ATTENUATION, |
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WM8741_UPDATERM, WM8741_UPDATERM); |
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return 0; |
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} |
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static void digidac1_soundcard_shutdown(struct snd_pcm_substream *substream) |
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{ |
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/* turn off wm8804 digital output */ |
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struct snd_soc_pcm_runtime *rtd = substream->private_data; |
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struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component; |
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snd_soc_component_update_bits(component, WM8804_PWRDN, 0x3c, 0x3c); |
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} |
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static int digidac1_soundcard_hw_params(struct snd_pcm_substream *substream, |
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struct snd_pcm_hw_params *params) |
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{ |
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struct snd_soc_pcm_runtime *rtd = substream->private_data; |
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
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struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component; |
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struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); |
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struct snd_soc_card *card = rtd->card; |
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struct snd_soc_pcm_runtime *wm8741_rtd; |
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struct snd_soc_component *wm8741_component; |
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int sysclk = 27000000; |
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long mclk_freq = 0; |
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int mclk_div = 1; |
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int sampling_freq = 1; |
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int ret; |
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wm8741_rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[1]); |
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if (!wm8741_rtd) { |
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dev_warn(card->dev, "digidac1_soundcard_hw_params: couldn't get WM8741 rtd\n"); |
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return -EFAULT; |
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} |
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wm8741_component = asoc_rtd_to_codec(wm8741_rtd, 0)->component; |
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samplerate = params_rate(params); |
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if (samplerate <= 96000) { |
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mclk_freq = samplerate*256; |
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mclk_div = WM8804_MCLKDIV_256FS; |
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} else { |
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mclk_freq = samplerate*128; |
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mclk_div = WM8804_MCLKDIV_128FS; |
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} |
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switch (samplerate) { |
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case 32000: |
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sampling_freq = 0x03; |
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break; |
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case 44100: |
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sampling_freq = 0x00; |
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break; |
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case 48000: |
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sampling_freq = 0x02; |
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break; |
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case 88200: |
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sampling_freq = 0x08; |
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break; |
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case 96000: |
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sampling_freq = 0x0a; |
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break; |
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case 176400: |
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sampling_freq = 0x0c; |
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break; |
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case 192000: |
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sampling_freq = 0x0e; |
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break; |
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default: |
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dev_err(card->dev, |
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"Failed to set WM8804 SYSCLK, unsupported samplerate %d\n", |
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samplerate); |
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} |
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snd_soc_dai_set_clkdiv(codec_dai, WM8804_MCLK_DIV, mclk_div); |
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snd_soc_dai_set_pll(codec_dai, 0, 0, sysclk, mclk_freq); |
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ret = snd_soc_dai_set_sysclk(codec_dai, WM8804_TX_CLKSRC_PLL, |
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sysclk, SND_SOC_CLOCK_OUT); |
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if (ret < 0) { |
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dev_err(card->dev, |
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"Failed to set WM8804 SYSCLK: %d\n", ret); |
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return ret; |
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} |
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/* Enable wm8804 TX output */ |
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snd_soc_component_update_bits(component, WM8804_PWRDN, 0x4, 0x0); |
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/* wm8804 Power on */ |
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snd_soc_component_update_bits(component, WM8804_PWRDN, 0x9, 0); |
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/* wm8804 set sampling frequency status bits */ |
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snd_soc_component_update_bits(component, WM8804_SPDTX4, 0x0f, sampling_freq); |
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/* Now update wm8741 registers for the correct oversampling */ |
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if (samplerate <= 48000) |
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snd_soc_component_update_bits(wm8741_component, WM8741_MODE_CONTROL_1, |
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WM8741_OSR_MASK, 0x00); |
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else if (samplerate <= 96000) |
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snd_soc_component_update_bits(wm8741_component, WM8741_MODE_CONTROL_1, |
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WM8741_OSR_MASK, 0x20); |
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else |
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snd_soc_component_update_bits(wm8741_component, WM8741_MODE_CONTROL_1, |
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WM8741_OSR_MASK, 0x40); |
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/* wm8741 bit size */ |
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switch (params_width(params)) { |
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case 16: |
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snd_soc_component_update_bits(wm8741_component, WM8741_FORMAT_CONTROL, |
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WM8741_IWL_MASK, 0x00); |
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break; |
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case 20: |
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snd_soc_component_update_bits(wm8741_component, WM8741_FORMAT_CONTROL, |
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WM8741_IWL_MASK, 0x01); |
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break; |
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case 24: |
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snd_soc_component_update_bits(wm8741_component, WM8741_FORMAT_CONTROL, |
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WM8741_IWL_MASK, 0x02); |
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break; |
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case 32: |
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snd_soc_component_update_bits(wm8741_component, WM8741_FORMAT_CONTROL, |
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WM8741_IWL_MASK, 0x03); |
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break; |
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default: |
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dev_dbg(card->dev, "wm8741_hw_params: Unsupported bit size param = %d", |
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params_width(params)); |
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return -EINVAL; |
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} |
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return snd_soc_dai_set_bclk_ratio(cpu_dai, 64); |
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} |
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/* machine stream operations */ |
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static struct snd_soc_ops digidac1_soundcard_ops = { |
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.hw_params = digidac1_soundcard_hw_params, |
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.startup = digidac1_soundcard_startup, |
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.shutdown = digidac1_soundcard_shutdown, |
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}; |
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SND_SOC_DAILINK_DEFS(digidac1, |
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DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")), |
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DAILINK_COMP_ARRAY(COMP_CODEC("wm8804.1-003b", "wm8804-spdif")), |
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DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2835-i2s.0"))); |
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SND_SOC_DAILINK_DEFS(digidac11, |
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DAILINK_COMP_ARRAY(COMP_CPU("wm8804-spdif")), |
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DAILINK_COMP_ARRAY(COMP_CODEC("wm8741.1-001a", "wm8741")), |
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DAILINK_COMP_ARRAY(COMP_EMPTY())); |
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static struct snd_soc_dai_link digidac1_soundcard_dai[] = { |
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{ |
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.name = "RRA DigiDAC1", |
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.stream_name = "RRA DigiDAC1 HiFi", |
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
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SND_SOC_DAIFMT_CBM_CFM, |
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.ops = &digidac1_soundcard_ops, |
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.init = digidac1_soundcard_init, |
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SND_SOC_DAILINK_REG(digidac1), |
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}, |
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{ |
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.name = "RRA DigiDAC11", |
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.stream_name = "RRA DigiDAC11 HiFi", |
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.dai_fmt = SND_SOC_DAIFMT_I2S |
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| SND_SOC_DAIFMT_NB_NF |
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| SND_SOC_DAIFMT_CBS_CFS, |
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SND_SOC_DAILINK_REG(digidac11), |
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}, |
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}; |
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/* audio machine driver */ |
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static struct snd_soc_card digidac1_soundcard = { |
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.name = "digidac1-soundcard", |
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.owner = THIS_MODULE, |
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.dai_link = digidac1_soundcard_dai, |
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.num_links = ARRAY_SIZE(digidac1_soundcard_dai), |
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}; |
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static int digidac1_soundcard_probe(struct platform_device *pdev) |
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{ |
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int ret = 0; |
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digidac1_soundcard.dev = &pdev->dev; |
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if (pdev->dev.of_node) { |
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struct device_node *i2s_node; |
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struct snd_soc_dai_link *dai = &digidac1_soundcard_dai[0]; |
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i2s_node = of_parse_phandle(pdev->dev.of_node, |
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"i2s-controller", 0); |
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if (i2s_node) { |
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dai->cpus->dai_name = NULL; |
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dai->cpus->of_node = i2s_node; |
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dai->platforms->name = NULL; |
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dai->platforms->of_node = i2s_node; |
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} |
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} |
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ret = devm_snd_soc_register_card(&pdev->dev, &digidac1_soundcard); |
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if (ret && ret != -EPROBE_DEFER) |
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dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", |
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ret); |
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return ret; |
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} |
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static const struct of_device_id digidac1_soundcard_of_match[] = { |
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{ .compatible = "rra,digidac1-soundcard", }, |
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{}, |
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}; |
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MODULE_DEVICE_TABLE(of, digidac1_soundcard_of_match); |
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static struct platform_driver digidac1_soundcard_driver = { |
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.driver = { |
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.name = "digidac1-audio", |
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.owner = THIS_MODULE, |
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.of_match_table = digidac1_soundcard_of_match, |
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}, |
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.probe = digidac1_soundcard_probe, |
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}; |
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module_platform_driver(digidac1_soundcard_driver); |
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|
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MODULE_AUTHOR("José M. Tasende <[email protected]>"); |
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MODULE_DESCRIPTION("ASoC Driver for RRA DigiDAC1"); |
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MODULE_LICENSE("GPL v2");
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