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313 lines
8.5 KiB
313 lines
8.5 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved. |
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* |
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* lpass-apq8016.c -- ALSA SoC CPU DAI driver for APQ8016 LPASS |
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*/ |
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#include <linux/clk.h> |
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#include <linux/device.h> |
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#include <linux/err.h> |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/of.h> |
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#include <linux/platform_device.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/soc-dai.h> |
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#include <dt-bindings/sound/apq8016-lpass.h> |
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#include "lpass-lpaif-reg.h" |
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#include "lpass.h" |
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static struct snd_soc_dai_driver apq8016_lpass_cpu_dai_driver[] = { |
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[MI2S_PRIMARY] = { |
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.id = MI2S_PRIMARY, |
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.name = "Primary MI2S", |
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.playback = { |
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.stream_name = "Primary Playback", |
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.formats = SNDRV_PCM_FMTBIT_S16 | |
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SNDRV_PCM_FMTBIT_S24 | |
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SNDRV_PCM_FMTBIT_S32, |
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.rates = SNDRV_PCM_RATE_8000 | |
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SNDRV_PCM_RATE_16000 | |
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SNDRV_PCM_RATE_32000 | |
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SNDRV_PCM_RATE_48000 | |
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SNDRV_PCM_RATE_96000, |
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.rate_min = 8000, |
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.rate_max = 96000, |
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.channels_min = 1, |
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.channels_max = 8, |
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}, |
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.probe = &asoc_qcom_lpass_cpu_dai_probe, |
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.ops = &asoc_qcom_lpass_cpu_dai_ops, |
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}, |
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[MI2S_SECONDARY] = { |
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.id = MI2S_SECONDARY, |
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.name = "Secondary MI2S", |
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.playback = { |
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.stream_name = "Secondary Playback", |
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.formats = SNDRV_PCM_FMTBIT_S16 | |
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SNDRV_PCM_FMTBIT_S24 | |
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SNDRV_PCM_FMTBIT_S32, |
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.rates = SNDRV_PCM_RATE_8000 | |
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SNDRV_PCM_RATE_16000 | |
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SNDRV_PCM_RATE_32000 | |
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SNDRV_PCM_RATE_48000 | |
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SNDRV_PCM_RATE_96000, |
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.rate_min = 8000, |
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.rate_max = 96000, |
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.channels_min = 1, |
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.channels_max = 8, |
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}, |
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.probe = &asoc_qcom_lpass_cpu_dai_probe, |
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.ops = &asoc_qcom_lpass_cpu_dai_ops, |
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}, |
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[MI2S_TERTIARY] = { |
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.id = MI2S_TERTIARY, |
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.name = "Tertiary MI2S", |
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.capture = { |
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.stream_name = "Tertiary Capture", |
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.formats = SNDRV_PCM_FMTBIT_S16 | |
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SNDRV_PCM_FMTBIT_S24 | |
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SNDRV_PCM_FMTBIT_S32, |
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.rates = SNDRV_PCM_RATE_8000 | |
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SNDRV_PCM_RATE_16000 | |
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SNDRV_PCM_RATE_32000 | |
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SNDRV_PCM_RATE_48000 | |
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SNDRV_PCM_RATE_96000, |
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.rate_min = 8000, |
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.rate_max = 96000, |
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.channels_min = 1, |
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.channels_max = 8, |
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}, |
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.probe = &asoc_qcom_lpass_cpu_dai_probe, |
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.ops = &asoc_qcom_lpass_cpu_dai_ops, |
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}, |
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[MI2S_QUATERNARY] = { |
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.id = MI2S_QUATERNARY, |
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.name = "Quatenary MI2S", |
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.playback = { |
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.stream_name = "Quatenary Playback", |
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.formats = SNDRV_PCM_FMTBIT_S16 | |
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SNDRV_PCM_FMTBIT_S24 | |
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SNDRV_PCM_FMTBIT_S32, |
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.rates = SNDRV_PCM_RATE_8000 | |
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SNDRV_PCM_RATE_16000 | |
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SNDRV_PCM_RATE_32000 | |
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SNDRV_PCM_RATE_48000 | |
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SNDRV_PCM_RATE_96000, |
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.rate_min = 8000, |
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.rate_max = 96000, |
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.channels_min = 1, |
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.channels_max = 8, |
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}, |
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.capture = { |
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.stream_name = "Quatenary Capture", |
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.formats = SNDRV_PCM_FMTBIT_S16 | |
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SNDRV_PCM_FMTBIT_S24 | |
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SNDRV_PCM_FMTBIT_S32, |
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.rates = SNDRV_PCM_RATE_8000 | |
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SNDRV_PCM_RATE_16000 | |
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SNDRV_PCM_RATE_32000 | |
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SNDRV_PCM_RATE_48000 | |
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SNDRV_PCM_RATE_96000, |
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.rate_min = 8000, |
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.rate_max = 96000, |
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.channels_min = 1, |
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.channels_max = 8, |
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}, |
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.probe = &asoc_qcom_lpass_cpu_dai_probe, |
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.ops = &asoc_qcom_lpass_cpu_dai_ops, |
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}, |
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}; |
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static int apq8016_lpass_alloc_dma_channel(struct lpass_data *drvdata, |
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int direction, unsigned int dai_id) |
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{ |
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struct lpass_variant *v = drvdata->variant; |
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int chan = 0; |
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if (direction == SNDRV_PCM_STREAM_PLAYBACK) { |
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chan = find_first_zero_bit(&drvdata->dma_ch_bit_map, |
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v->rdma_channels); |
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if (chan >= v->rdma_channels) |
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return -EBUSY; |
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} else { |
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chan = find_next_zero_bit(&drvdata->dma_ch_bit_map, |
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v->wrdma_channel_start + |
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v->wrdma_channels, |
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v->wrdma_channel_start); |
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if (chan >= v->wrdma_channel_start + v->wrdma_channels) |
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return -EBUSY; |
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} |
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set_bit(chan, &drvdata->dma_ch_bit_map); |
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return chan; |
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} |
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static int apq8016_lpass_free_dma_channel(struct lpass_data *drvdata, int chan, unsigned int dai_id) |
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{ |
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clear_bit(chan, &drvdata->dma_ch_bit_map); |
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return 0; |
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} |
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static int apq8016_lpass_init(struct platform_device *pdev) |
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{ |
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struct lpass_data *drvdata = platform_get_drvdata(pdev); |
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struct lpass_variant *variant = drvdata->variant; |
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struct device *dev = &pdev->dev; |
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int ret, i; |
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drvdata->clks = devm_kcalloc(dev, variant->num_clks, |
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sizeof(*drvdata->clks), GFP_KERNEL); |
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if (!drvdata->clks) |
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return -ENOMEM; |
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drvdata->num_clks = variant->num_clks; |
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for (i = 0; i < drvdata->num_clks; i++) |
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drvdata->clks[i].id = variant->clk_name[i]; |
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ret = devm_clk_bulk_get(dev, drvdata->num_clks, drvdata->clks); |
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if (ret) { |
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dev_err(dev, "Failed to get clocks %d\n", ret); |
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return ret; |
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} |
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ret = clk_bulk_prepare_enable(drvdata->num_clks, drvdata->clks); |
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if (ret) { |
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dev_err(dev, "apq8016 clk_enable failed\n"); |
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return ret; |
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} |
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drvdata->ahbix_clk = devm_clk_get(dev, "ahbix-clk"); |
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if (IS_ERR(drvdata->ahbix_clk)) { |
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dev_err(dev, "error getting ahbix-clk: %ld\n", |
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PTR_ERR(drvdata->ahbix_clk)); |
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ret = PTR_ERR(drvdata->ahbix_clk); |
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goto err_ahbix_clk; |
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} |
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ret = clk_set_rate(drvdata->ahbix_clk, LPASS_AHBIX_CLOCK_FREQUENCY); |
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if (ret) { |
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dev_err(dev, "error setting rate on ahbix_clk: %d\n", ret); |
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goto err_ahbix_clk; |
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} |
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dev_dbg(dev, "set ahbix_clk rate to %lu\n", |
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clk_get_rate(drvdata->ahbix_clk)); |
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ret = clk_prepare_enable(drvdata->ahbix_clk); |
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if (ret) { |
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dev_err(dev, "error enabling ahbix_clk: %d\n", ret); |
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goto err_ahbix_clk; |
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} |
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return 0; |
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err_ahbix_clk: |
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clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks); |
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return ret; |
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} |
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static int apq8016_lpass_exit(struct platform_device *pdev) |
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{ |
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struct lpass_data *drvdata = platform_get_drvdata(pdev); |
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clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks); |
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clk_disable_unprepare(drvdata->ahbix_clk); |
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return 0; |
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} |
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static struct lpass_variant apq8016_data = { |
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.i2sctrl_reg_base = 0x1000, |
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.i2sctrl_reg_stride = 0x1000, |
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.i2s_ports = 4, |
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.irq_reg_base = 0x6000, |
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.irq_reg_stride = 0x1000, |
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.irq_ports = 3, |
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.rdma_reg_base = 0x8400, |
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.rdma_reg_stride = 0x1000, |
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.rdma_channels = 2, |
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.dmactl_audif_start = 1, |
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.wrdma_reg_base = 0xB000, |
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.wrdma_reg_stride = 0x1000, |
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.wrdma_channel_start = 5, |
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.wrdma_channels = 2, |
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.loopback = REG_FIELD_ID(0x1000, 15, 15, 4, 0x1000), |
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.spken = REG_FIELD_ID(0x1000, 14, 14, 4, 0x1000), |
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.spkmode = REG_FIELD_ID(0x1000, 10, 13, 4, 0x1000), |
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.spkmono = REG_FIELD_ID(0x1000, 9, 9, 4, 0x1000), |
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.micen = REG_FIELD_ID(0x1000, 8, 8, 4, 0x1000), |
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.micmode = REG_FIELD_ID(0x1000, 4, 7, 4, 0x1000), |
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.micmono = REG_FIELD_ID(0x1000, 3, 3, 4, 0x1000), |
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.wssrc = REG_FIELD_ID(0x1000, 2, 2, 4, 0x1000), |
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.bitwidth = REG_FIELD_ID(0x1000, 0, 1, 4, 0x1000), |
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.rdma_dyncclk = REG_FIELD_ID(0x8400, 12, 12, 2, 0x1000), |
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.rdma_bursten = REG_FIELD_ID(0x8400, 11, 11, 2, 0x1000), |
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.rdma_wpscnt = REG_FIELD_ID(0x8400, 8, 10, 2, 0x1000), |
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.rdma_intf = REG_FIELD_ID(0x8400, 4, 7, 2, 0x1000), |
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.rdma_fifowm = REG_FIELD_ID(0x8400, 1, 3, 2, 0x1000), |
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.rdma_enable = REG_FIELD_ID(0x8400, 0, 0, 2, 0x1000), |
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.wrdma_dyncclk = REG_FIELD_ID(0xB000, 12, 12, 2, 0x1000), |
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.wrdma_bursten = REG_FIELD_ID(0xB000, 11, 11, 2, 0x1000), |
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.wrdma_wpscnt = REG_FIELD_ID(0xB000, 8, 10, 2, 0x1000), |
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.wrdma_intf = REG_FIELD_ID(0xB000, 4, 7, 2, 0x1000), |
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.wrdma_fifowm = REG_FIELD_ID(0xB000, 1, 3, 2, 0x1000), |
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.wrdma_enable = REG_FIELD_ID(0xB000, 0, 0, 2, 0x1000), |
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.clk_name = (const char*[]) { |
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"pcnoc-mport-clk", |
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"pcnoc-sway-clk", |
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}, |
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.num_clks = 2, |
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.dai_driver = apq8016_lpass_cpu_dai_driver, |
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.num_dai = ARRAY_SIZE(apq8016_lpass_cpu_dai_driver), |
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.dai_osr_clk_names = (const char *[]) { |
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"mi2s-osr-clk0", |
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"mi2s-osr-clk1", |
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"mi2s-osr-clk2", |
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"mi2s-osr-clk3", |
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}, |
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.dai_bit_clk_names = (const char *[]) { |
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"mi2s-bit-clk0", |
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"mi2s-bit-clk1", |
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"mi2s-bit-clk2", |
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"mi2s-bit-clk3", |
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}, |
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.init = apq8016_lpass_init, |
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.exit = apq8016_lpass_exit, |
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.alloc_dma_channel = apq8016_lpass_alloc_dma_channel, |
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.free_dma_channel = apq8016_lpass_free_dma_channel, |
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}; |
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static const struct of_device_id apq8016_lpass_cpu_device_id[] __maybe_unused = { |
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{ .compatible = "qcom,lpass-cpu-apq8016", .data = &apq8016_data }, |
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{ .compatible = "qcom,apq8016-lpass-cpu", .data = &apq8016_data }, |
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{} |
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}; |
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MODULE_DEVICE_TABLE(of, apq8016_lpass_cpu_device_id); |
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static struct platform_driver apq8016_lpass_cpu_platform_driver = { |
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.driver = { |
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.name = "apq8016-lpass-cpu", |
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.of_match_table = of_match_ptr(apq8016_lpass_cpu_device_id), |
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}, |
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.probe = asoc_qcom_lpass_cpu_platform_probe, |
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.remove = asoc_qcom_lpass_cpu_platform_remove, |
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}; |
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module_platform_driver(apq8016_lpass_cpu_platform_driver); |
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MODULE_DESCRIPTION("APQ8016 LPASS CPU Driver"); |
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MODULE_LICENSE("GPL v2"); |
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