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258 lines
6.5 KiB
258 lines
6.5 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright (c) 2020 The Linux Foundation. All rights reserved. |
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* |
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* lpass-hdmi.c -- ALSA SoC HDMI-CPU DAI driver for QTi LPASS HDMI |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <sound/pcm_params.h> |
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#include <linux/regmap.h> |
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#include <sound/soc.h> |
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#include <sound/soc-dai.h> |
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#include <dt-bindings/sound/sc7180-lpass.h> |
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#include "lpass-lpaif-reg.h" |
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#include "lpass.h" |
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static int lpass_hdmi_daiops_hw_params(struct snd_pcm_substream *substream, |
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struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) |
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{ |
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struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai); |
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snd_pcm_format_t format = params_format(params); |
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unsigned int rate = params_rate(params); |
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unsigned int channels = params_channels(params); |
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unsigned int ret; |
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int bitwidth; |
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unsigned int word_length; |
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unsigned int ch_sts_buf0; |
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unsigned int ch_sts_buf1; |
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unsigned int data_format; |
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unsigned int sampling_freq; |
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unsigned int ch = 0; |
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struct lpass_dp_metadata_ctl *meta_ctl = drvdata->meta_ctl; |
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struct lpass_sstream_ctl *sstream_ctl = drvdata->sstream_ctl; |
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bitwidth = snd_pcm_format_width(format); |
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if (bitwidth < 0) { |
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dev_err(dai->dev, "%s invalid bit width given : %d\n", |
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__func__, bitwidth); |
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return bitwidth; |
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} |
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switch (bitwidth) { |
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case 16: |
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word_length = LPASS_DP_AUDIO_BITWIDTH16; |
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break; |
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case 24: |
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word_length = LPASS_DP_AUDIO_BITWIDTH24; |
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break; |
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default: |
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dev_err(dai->dev, "%s invalid bit width given : %d\n", |
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__func__, bitwidth); |
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return -EINVAL; |
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} |
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switch (rate) { |
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case 32000: |
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sampling_freq = LPASS_SAMPLING_FREQ32; |
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break; |
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case 44100: |
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sampling_freq = LPASS_SAMPLING_FREQ44; |
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break; |
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case 48000: |
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sampling_freq = LPASS_SAMPLING_FREQ48; |
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break; |
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default: |
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dev_err(dai->dev, "%s invalid bit width given : %d\n", |
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__func__, bitwidth); |
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return -EINVAL; |
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} |
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data_format = LPASS_DATA_FORMAT_LINEAR; |
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ch_sts_buf0 = (((data_format << LPASS_DATA_FORMAT_SHIFT) & LPASS_DATA_FORMAT_MASK) |
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| ((sampling_freq << LPASS_FREQ_BIT_SHIFT) & LPASS_FREQ_BIT_MASK)); |
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ch_sts_buf1 = (word_length) & LPASS_WORDLENGTH_MASK; |
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ret = regmap_field_write(drvdata->tx_ctl->soft_reset, LPASS_TX_CTL_RESET); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(drvdata->tx_ctl->soft_reset, LPASS_TX_CTL_CLEAR); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(drvdata->hdmitx_legacy_en, LPASS_HDMITX_LEGACY_DISABLE); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(drvdata->hdmitx_parity_calc_en, HDMITX_PARITY_CALC_EN); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(drvdata->vbit_ctl->replace_vbit, REPLACE_VBIT); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(drvdata->vbit_ctl->vbit_stream, LINEAR_PCM_DATA); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(drvdata->hdmitx_ch_msb[0], ch_sts_buf1); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(drvdata->hdmitx_ch_lsb[0], ch_sts_buf0); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(drvdata->hdmi_tx_dmactl[0]->use_hw_chs, HW_MODE); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(drvdata->hdmi_tx_dmactl[0]->hw_chs_sel, SW_MODE); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(drvdata->hdmi_tx_dmactl[0]->use_hw_usr, HW_MODE); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(drvdata->hdmi_tx_dmactl[0]->hw_usr_sel, SW_MODE); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(meta_ctl->mute, LPASS_MUTE_ENABLE); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(meta_ctl->as_sdp_cc, channels - 1); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(meta_ctl->as_sdp_ct, LPASS_META_DEFAULT_VAL); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(meta_ctl->aif_db4, LPASS_META_DEFAULT_VAL); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(meta_ctl->frequency, sampling_freq); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(meta_ctl->mst_index, LPASS_META_DEFAULT_VAL); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(meta_ctl->dptx_index, LPASS_META_DEFAULT_VAL); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(sstream_ctl->sstream_en, LPASS_SSTREAM_DISABLE); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(sstream_ctl->dma_sel, ch); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(sstream_ctl->auto_bbit_en, LPASS_SSTREAM_DEFAULT_ENABLE); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(sstream_ctl->layout, LPASS_SSTREAM_DEFAULT_DISABLE); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(sstream_ctl->layout_sp, LPASS_LAYOUT_SP_DEFAULT); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(sstream_ctl->dp_audio, LPASS_SSTREAM_DEFAULT_ENABLE); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(sstream_ctl->set_sp_on_en, LPASS_SSTREAM_DEFAULT_ENABLE); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(sstream_ctl->dp_sp_b_hw_en, LPASS_SSTREAM_DEFAULT_ENABLE); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(sstream_ctl->dp_staffing_en, LPASS_SSTREAM_DEFAULT_ENABLE); |
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if (ret) |
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return ret; |
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return ret; |
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} |
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static int lpass_hdmi_daiops_prepare(struct snd_pcm_substream *substream, |
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struct snd_soc_dai *dai) |
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{ |
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int ret; |
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struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai); |
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ret = regmap_field_write(drvdata->sstream_ctl->sstream_en, LPASS_SSTREAM_ENABLE); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(drvdata->meta_ctl->mute, LPASS_MUTE_DISABLE); |
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if (ret) |
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return ret; |
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return ret; |
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} |
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static int lpass_hdmi_daiops_trigger(struct snd_pcm_substream *substream, |
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int cmd, struct snd_soc_dai *dai) |
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{ |
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struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai); |
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struct lpass_dp_metadata_ctl *meta_ctl = drvdata->meta_ctl; |
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struct lpass_sstream_ctl *sstream_ctl = drvdata->sstream_ctl; |
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int ret = -EINVAL; |
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switch (cmd) { |
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case SNDRV_PCM_TRIGGER_START: |
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case SNDRV_PCM_TRIGGER_RESUME: |
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case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
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ret = regmap_field_write(sstream_ctl->sstream_en, LPASS_SSTREAM_ENABLE); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(meta_ctl->mute, LPASS_MUTE_DISABLE); |
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if (ret) |
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return ret; |
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break; |
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case SNDRV_PCM_TRIGGER_STOP: |
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case SNDRV_PCM_TRIGGER_SUSPEND: |
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case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
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ret = regmap_field_write(sstream_ctl->sstream_en, LPASS_SSTREAM_DISABLE); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(meta_ctl->mute, LPASS_MUTE_ENABLE); |
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if (ret) |
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return ret; |
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ret = regmap_field_write(sstream_ctl->dp_audio, 0); |
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if (ret) |
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return ret; |
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break; |
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} |
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return ret; |
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} |
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const struct snd_soc_dai_ops asoc_qcom_lpass_hdmi_dai_ops = { |
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.hw_params = lpass_hdmi_daiops_hw_params, |
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.prepare = lpass_hdmi_daiops_prepare, |
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.trigger = lpass_hdmi_daiops_trigger, |
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}; |
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EXPORT_SYMBOL_GPL(asoc_qcom_lpass_hdmi_dai_ops); |
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MODULE_DESCRIPTION("QTi LPASS HDMI Driver"); |
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MODULE_LICENSE("GPL v2");
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