285 lines
6.9 KiB
C
285 lines
6.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2018, The Linux Foundation. All rights reserved.
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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/of_device.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include "common.h"
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#include "qdsp6/q6afe.h"
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#define DEFAULT_SAMPLE_RATE_48K 48000
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#define DEFAULT_MCLK_RATE 24576000
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#define DEFAULT_BCLK_RATE 12288000
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struct sdm845_snd_data {
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struct snd_soc_card *card;
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uint32_t pri_mi2s_clk_count;
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uint32_t quat_tdm_clk_count;
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};
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static unsigned int tdm_slot_offset[8] = {0, 4, 8, 12, 16, 20, 24, 28};
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static int sdm845_tdm_snd_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 *cpu_dai = rtd->cpu_dai;
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int ret = 0;
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int channels, slot_width;
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switch (params_format(params)) {
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case SNDRV_PCM_FORMAT_S16_LE:
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slot_width = 32;
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break;
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default:
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dev_err(rtd->dev, "%s: invalid param format 0x%x\n",
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__func__, params_format(params));
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return -EINVAL;
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}
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channels = params_channels(params);
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
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ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0, 0x3,
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8, slot_width);
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if (ret < 0) {
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dev_err(rtd->dev, "%s: failed to set tdm slot, err:%d\n",
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__func__, ret);
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goto end;
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}
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ret = snd_soc_dai_set_channel_map(cpu_dai, 0, NULL,
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channels, tdm_slot_offset);
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if (ret < 0) {
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dev_err(rtd->dev, "%s: failed to set channel map, err:%d\n",
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__func__, ret);
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goto end;
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}
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} else {
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ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0xf, 0,
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8, slot_width);
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if (ret < 0) {
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dev_err(rtd->dev, "%s: failed to set tdm slot, err:%d\n",
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__func__, ret);
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goto end;
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}
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ret = snd_soc_dai_set_channel_map(cpu_dai, channels,
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tdm_slot_offset, 0, NULL);
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if (ret < 0) {
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dev_err(rtd->dev, "%s: failed to set channel map, err:%d\n",
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__func__, ret);
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goto end;
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}
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}
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end:
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return ret;
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}
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static int sdm845_snd_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 *cpu_dai = rtd->cpu_dai;
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int ret = 0;
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switch (cpu_dai->id) {
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case QUATERNARY_TDM_RX_0:
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case QUATERNARY_TDM_TX_0:
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ret = sdm845_tdm_snd_hw_params(substream, params);
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break;
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default:
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pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
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break;
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}
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return ret;
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}
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static int sdm845_snd_startup(struct snd_pcm_substream *substream)
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{
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unsigned int fmt = SND_SOC_DAIFMT_CBS_CFS;
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_card *card = rtd->card;
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struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card);
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struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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switch (cpu_dai->id) {
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case PRIMARY_MI2S_RX:
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case PRIMARY_MI2S_TX:
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if (++(data->pri_mi2s_clk_count) == 1) {
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snd_soc_dai_set_sysclk(cpu_dai,
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Q6AFE_LPASS_CLK_ID_MCLK_1,
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DEFAULT_MCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
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snd_soc_dai_set_sysclk(cpu_dai,
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Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT,
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DEFAULT_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
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}
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snd_soc_dai_set_fmt(cpu_dai, fmt);
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break;
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case QUATERNARY_TDM_RX_0:
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case QUATERNARY_TDM_TX_0:
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if (++(data->quat_tdm_clk_count) == 1) {
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snd_soc_dai_set_sysclk(cpu_dai,
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Q6AFE_LPASS_CLK_ID_QUAD_TDM_IBIT,
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DEFAULT_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
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}
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break;
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default:
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pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
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break;
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}
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return 0;
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}
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static void sdm845_snd_shutdown(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_card *card = rtd->card;
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struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card);
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struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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switch (cpu_dai->id) {
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case PRIMARY_MI2S_RX:
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case PRIMARY_MI2S_TX:
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if (--(data->pri_mi2s_clk_count) == 0) {
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snd_soc_dai_set_sysclk(cpu_dai,
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Q6AFE_LPASS_CLK_ID_MCLK_1,
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0, SNDRV_PCM_STREAM_PLAYBACK);
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snd_soc_dai_set_sysclk(cpu_dai,
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Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT,
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0, SNDRV_PCM_STREAM_PLAYBACK);
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};
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break;
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case QUATERNARY_TDM_RX_0:
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case QUATERNARY_TDM_TX_0:
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if (--(data->quat_tdm_clk_count) == 0) {
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snd_soc_dai_set_sysclk(cpu_dai,
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Q6AFE_LPASS_CLK_ID_QUAD_TDM_IBIT,
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0, SNDRV_PCM_STREAM_PLAYBACK);
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}
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break;
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default:
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pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
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break;
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}
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}
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static struct snd_soc_ops sdm845_be_ops = {
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.hw_params = sdm845_snd_hw_params,
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.startup = sdm845_snd_startup,
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.shutdown = sdm845_snd_shutdown,
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};
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static int sdm845_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
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struct snd_pcm_hw_params *params)
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{
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struct snd_interval *rate = hw_param_interval(params,
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SNDRV_PCM_HW_PARAM_RATE);
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struct snd_interval *channels = hw_param_interval(params,
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SNDRV_PCM_HW_PARAM_CHANNELS);
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struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
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rate->min = rate->max = DEFAULT_SAMPLE_RATE_48K;
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channels->min = channels->max = 2;
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snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
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return 0;
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}
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static void sdm845_add_be_ops(struct snd_soc_card *card)
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{
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struct snd_soc_dai_link *link;
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int i;
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for_each_card_prelinks(card, i, link) {
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if (link->no_pcm == 1) {
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link->ops = &sdm845_be_ops;
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link->be_hw_params_fixup = sdm845_be_hw_params_fixup;
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}
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}
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}
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static int sdm845_snd_platform_probe(struct platform_device *pdev)
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{
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struct snd_soc_card *card;
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struct sdm845_snd_data *data;
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struct device *dev = &pdev->dev;
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int ret;
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card = kzalloc(sizeof(*card), GFP_KERNEL);
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if (!card)
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return -ENOMEM;
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/* Allocate the private data */
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data = kzalloc(sizeof(*data), GFP_KERNEL);
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if (!data) {
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ret = -ENOMEM;
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goto data_alloc_fail;
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}
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card->dev = dev;
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dev_set_drvdata(dev, card);
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ret = qcom_snd_parse_of(card);
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if (ret) {
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dev_err(dev, "Error parsing OF data\n");
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goto parse_dt_fail;
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}
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data->card = card;
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snd_soc_card_set_drvdata(card, data);
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sdm845_add_be_ops(card);
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ret = snd_soc_register_card(card);
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if (ret) {
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dev_err(dev, "Sound card registration failed\n");
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goto register_card_fail;
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}
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return ret;
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register_card_fail:
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kfree(card->dai_link);
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parse_dt_fail:
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kfree(data);
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data_alloc_fail:
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kfree(card);
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return ret;
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}
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static int sdm845_snd_platform_remove(struct platform_device *pdev)
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{
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struct snd_soc_card *card = dev_get_drvdata(&pdev->dev);
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struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card);
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snd_soc_unregister_card(card);
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kfree(card->dai_link);
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kfree(data);
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kfree(card);
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return 0;
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}
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static const struct of_device_id sdm845_snd_device_id[] = {
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{ .compatible = "qcom,sdm845-sndcard" },
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{},
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};
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MODULE_DEVICE_TABLE(of, sdm845_snd_device_id);
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static struct platform_driver sdm845_snd_driver = {
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.probe = sdm845_snd_platform_probe,
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.remove = sdm845_snd_platform_remove,
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.driver = {
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.name = "msm-snd-sdm845",
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.of_match_table = sdm845_snd_device_id,
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},
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};
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module_platform_driver(sdm845_snd_driver);
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MODULE_DESCRIPTION("sdm845 ASoC Machine Driver");
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MODULE_LICENSE("GPL v2");
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