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308 lines
7.8 KiB
308 lines
7.8 KiB
// SPDX-License-Identifier: GPL-2.0 |
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// Copyright (c) 2020, Linaro Limited |
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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/soc.h> |
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#include <sound/soc-dapm.h> |
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#include <sound/pcm.h> |
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#include <linux/soundwire/sdw.h> |
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#include <sound/jack.h> |
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#include <linux/input-event-codes.h> |
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#include "qdsp6/q6afe.h" |
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#include "common.h" |
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#define DRIVER_NAME "sm8250" |
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#define MI2S_BCLK_RATE 1536000 |
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struct sm8250_snd_data { |
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bool stream_prepared[AFE_PORT_MAX]; |
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struct snd_soc_card *card; |
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struct sdw_stream_runtime *sruntime[AFE_PORT_MAX]; |
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struct snd_soc_jack jack; |
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bool jack_setup; |
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}; |
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static int sm8250_snd_init(struct snd_soc_pcm_runtime *rtd) |
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{ |
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struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card); |
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struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); |
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
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struct snd_soc_card *card = rtd->card; |
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int rval, i; |
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if (!data->jack_setup) { |
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struct snd_jack *jack; |
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rval = snd_soc_card_jack_new(card, "Headset Jack", |
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SND_JACK_HEADSET | SND_JACK_LINEOUT | |
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SND_JACK_MECHANICAL | |
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SND_JACK_BTN_0 | SND_JACK_BTN_1 | |
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SND_JACK_BTN_2 | SND_JACK_BTN_3 | |
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SND_JACK_BTN_4 | SND_JACK_BTN_5, |
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&data->jack); |
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if (rval < 0) { |
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dev_err(card->dev, "Unable to add Headphone Jack\n"); |
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return rval; |
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} |
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jack = data->jack.jack; |
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snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_MEDIA); |
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snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND); |
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snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP); |
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snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN); |
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data->jack_setup = true; |
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} |
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switch (cpu_dai->id) { |
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case TX_CODEC_DMA_TX_0: |
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case TX_CODEC_DMA_TX_1: |
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case TX_CODEC_DMA_TX_2: |
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case TX_CODEC_DMA_TX_3: |
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for_each_rtd_codec_dais(rtd, i, codec_dai) { |
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rval = snd_soc_component_set_jack(codec_dai->component, |
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&data->jack, NULL); |
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if (rval != 0 && rval != -ENOTSUPP) { |
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dev_warn(card->dev, "Failed to set jack: %d\n", rval); |
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return rval; |
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} |
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} |
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break; |
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default: |
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break; |
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} |
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return 0; |
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} |
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static int sm8250_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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rate->min = rate->max = 48000; |
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channels->min = channels->max = 2; |
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return 0; |
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} |
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static int sm8250_snd_startup(struct snd_pcm_substream *substream) |
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{ |
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unsigned int fmt = SND_SOC_DAIFMT_BP_FP; |
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unsigned int codec_dai_fmt = SND_SOC_DAIFMT_BC_FC; |
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struct snd_soc_pcm_runtime *rtd = substream->private_data; |
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struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); |
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
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switch (cpu_dai->id) { |
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case TERTIARY_MI2S_RX: |
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codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S; |
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snd_soc_dai_set_sysclk(cpu_dai, |
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Q6AFE_LPASS_CLK_ID_TER_MI2S_IBIT, |
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MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK); |
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snd_soc_dai_set_fmt(cpu_dai, fmt); |
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snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt); |
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break; |
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default: |
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break; |
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} |
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return 0; |
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} |
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static int sm8250_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 *codec_dai; |
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struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); |
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struct sm8250_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card); |
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struct sdw_stream_runtime *sruntime; |
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int i; |
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switch (cpu_dai->id) { |
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case WSA_CODEC_DMA_RX_0: |
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case RX_CODEC_DMA_RX_0: |
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case RX_CODEC_DMA_RX_1: |
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case TX_CODEC_DMA_TX_0: |
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case TX_CODEC_DMA_TX_1: |
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case TX_CODEC_DMA_TX_2: |
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case TX_CODEC_DMA_TX_3: |
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for_each_rtd_codec_dais(rtd, i, codec_dai) { |
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sruntime = snd_soc_dai_get_stream(codec_dai, |
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substream->stream); |
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if (sruntime != ERR_PTR(-ENOTSUPP)) |
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pdata->sruntime[cpu_dai->id] = sruntime; |
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} |
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break; |
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} |
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return 0; |
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} |
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static int sm8250_snd_wsa_dma_prepare(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_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); |
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struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card); |
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struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; |
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int ret; |
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if (!sruntime) |
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return 0; |
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if (data->stream_prepared[cpu_dai->id]) { |
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sdw_disable_stream(sruntime); |
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sdw_deprepare_stream(sruntime); |
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data->stream_prepared[cpu_dai->id] = false; |
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} |
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ret = sdw_prepare_stream(sruntime); |
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if (ret) |
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return ret; |
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/** |
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* NOTE: there is a strict hw requirement about the ordering of port |
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* enables and actual WSA881x PA enable. PA enable should only happen |
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* after soundwire ports are enabled if not DC on the line is |
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* accumulated resulting in Click/Pop Noise |
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* PA enable/mute are handled as part of codec DAPM and digital mute. |
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*/ |
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ret = sdw_enable_stream(sruntime); |
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if (ret) { |
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sdw_deprepare_stream(sruntime); |
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return ret; |
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} |
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data->stream_prepared[cpu_dai->id] = true; |
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return ret; |
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} |
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static int sm8250_snd_prepare(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_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); |
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switch (cpu_dai->id) { |
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case WSA_CODEC_DMA_RX_0: |
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case WSA_CODEC_DMA_RX_1: |
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case RX_CODEC_DMA_RX_0: |
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case RX_CODEC_DMA_RX_1: |
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case TX_CODEC_DMA_TX_0: |
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case TX_CODEC_DMA_TX_1: |
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case TX_CODEC_DMA_TX_2: |
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case TX_CODEC_DMA_TX_3: |
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return sm8250_snd_wsa_dma_prepare(substream); |
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default: |
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break; |
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} |
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return 0; |
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} |
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static int sm8250_snd_hw_free(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 sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card); |
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struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); |
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struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id]; |
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switch (cpu_dai->id) { |
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case WSA_CODEC_DMA_RX_0: |
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case WSA_CODEC_DMA_RX_1: |
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case RX_CODEC_DMA_RX_0: |
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case RX_CODEC_DMA_RX_1: |
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case TX_CODEC_DMA_TX_0: |
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case TX_CODEC_DMA_TX_1: |
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case TX_CODEC_DMA_TX_2: |
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case TX_CODEC_DMA_TX_3: |
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if (sruntime && data->stream_prepared[cpu_dai->id]) { |
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sdw_disable_stream(sruntime); |
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sdw_deprepare_stream(sruntime); |
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data->stream_prepared[cpu_dai->id] = false; |
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} |
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break; |
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default: |
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break; |
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} |
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return 0; |
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} |
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static const struct snd_soc_ops sm8250_be_ops = { |
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.startup = sm8250_snd_startup, |
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.hw_params = sm8250_snd_hw_params, |
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.hw_free = sm8250_snd_hw_free, |
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.prepare = sm8250_snd_prepare, |
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}; |
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static void sm8250_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->init = sm8250_snd_init; |
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link->be_hw_params_fixup = sm8250_be_hw_params_fixup; |
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link->ops = &sm8250_be_ops; |
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} |
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} |
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} |
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static int sm8250_platform_probe(struct platform_device *pdev) |
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{ |
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struct snd_soc_card *card; |
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struct sm8250_snd_data *data; |
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struct device *dev = &pdev->dev; |
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int ret; |
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card = devm_kzalloc(dev, 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 = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); |
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if (!data) |
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return -ENOMEM; |
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card->dev = dev; |
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dev_set_drvdata(dev, card); |
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snd_soc_card_set_drvdata(card, data); |
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ret = qcom_snd_parse_of(card); |
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if (ret) |
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return ret; |
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card->driver_name = DRIVER_NAME; |
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sm8250_add_be_ops(card); |
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return devm_snd_soc_register_card(dev, card); |
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} |
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static const struct of_device_id snd_sm8250_dt_match[] = { |
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{.compatible = "qcom,sm8250-sndcard"}, |
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{.compatible = "qcom,qrb5165-rb5-sndcard"}, |
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{} |
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}; |
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MODULE_DEVICE_TABLE(of, snd_sm8250_dt_match); |
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static struct platform_driver snd_sm8250_driver = { |
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.probe = sm8250_platform_probe, |
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.driver = { |
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.name = "snd-sm8250", |
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.of_match_table = snd_sm8250_dt_match, |
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}, |
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}; |
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module_platform_driver(snd_sm8250_driver); |
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MODULE_AUTHOR("Srinivas Kandagatla <[email protected]"); |
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MODULE_DESCRIPTION("SM8250 ASoC Machine Driver"); |
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MODULE_LICENSE("GPL v2");
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