326 lines
8.8 KiB
C
326 lines
8.8 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2015 The Linux Foundation. All rights reserved.
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*/
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#include <linux/device.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/io.h>
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#include <linux/of.h>
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#include <linux/clk.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/jack.h>
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#include <sound/soc.h>
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#include <uapi/linux/input-event-codes.h>
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#include <dt-bindings/sound/apq8016-lpass.h>
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#include "common.h"
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#include "qdsp6/q6afe.h"
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#define MI2S_COUNT (MI2S_QUATERNARY + 1)
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struct apq8016_sbc_data {
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struct snd_soc_card card;
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void __iomem *mic_iomux;
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void __iomem *spkr_iomux;
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struct snd_soc_jack jack;
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bool jack_setup;
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int mi2s_clk_count[MI2S_COUNT];
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};
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#define MIC_CTRL_TER_WS_SLAVE_SEL BIT(21)
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#define MIC_CTRL_QUA_WS_SLAVE_SEL_10 BIT(17)
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#define MIC_CTRL_TLMM_SCLK_EN BIT(1)
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#define SPKR_CTL_PRI_WS_SLAVE_SEL_11 (BIT(17) | BIT(16))
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#define SPKR_CTL_TLMM_MCLK_EN BIT(1)
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#define SPKR_CTL_TLMM_SCLK_EN BIT(2)
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#define SPKR_CTL_TLMM_DATA1_EN BIT(3)
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#define SPKR_CTL_TLMM_WS_OUT_SEL_MASK GENMASK(7, 6)
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#define SPKR_CTL_TLMM_WS_OUT_SEL_SEC BIT(6)
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#define SPKR_CTL_TLMM_WS_EN_SEL_MASK GENMASK(19, 18)
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#define SPKR_CTL_TLMM_WS_EN_SEL_SEC BIT(18)
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#define DEFAULT_MCLK_RATE 9600000
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#define MI2S_BCLK_RATE 1536000
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static int apq8016_dai_init(struct snd_soc_pcm_runtime *rtd, int mi2s)
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{
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struct snd_soc_dai *codec_dai;
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struct snd_soc_component *component;
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struct snd_soc_card *card = rtd->card;
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struct apq8016_sbc_data *pdata = snd_soc_card_get_drvdata(card);
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int i, rval;
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u32 value;
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switch (mi2s) {
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case MI2S_PRIMARY:
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writel(readl(pdata->spkr_iomux) | SPKR_CTL_PRI_WS_SLAVE_SEL_11,
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pdata->spkr_iomux);
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break;
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case MI2S_QUATERNARY:
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/* Configure the Quat MI2S to TLMM */
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writel(readl(pdata->mic_iomux) | MIC_CTRL_QUA_WS_SLAVE_SEL_10 |
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MIC_CTRL_TLMM_SCLK_EN,
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pdata->mic_iomux);
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break;
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case MI2S_SECONDARY:
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/* Clear TLMM_WS_OUT_SEL and TLMM_WS_EN_SEL fields */
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value = readl(pdata->spkr_iomux) &
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~(SPKR_CTL_TLMM_WS_OUT_SEL_MASK | SPKR_CTL_TLMM_WS_EN_SEL_MASK);
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/* Configure the Sec MI2S to TLMM */
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writel(value | SPKR_CTL_TLMM_MCLK_EN | SPKR_CTL_TLMM_SCLK_EN |
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SPKR_CTL_TLMM_DATA1_EN | SPKR_CTL_TLMM_WS_OUT_SEL_SEC |
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SPKR_CTL_TLMM_WS_EN_SEL_SEC, pdata->spkr_iomux);
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break;
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case MI2S_TERTIARY:
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writel(readl(pdata->mic_iomux) | MIC_CTRL_TER_WS_SLAVE_SEL |
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MIC_CTRL_TLMM_SCLK_EN,
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pdata->mic_iomux);
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break;
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default:
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dev_err(card->dev, "unsupported cpu dai configuration\n");
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return -EINVAL;
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}
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if (!pdata->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 |
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SND_JACK_HEADPHONE |
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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,
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&pdata->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 = pdata->jack.jack;
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snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
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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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pdata->jack_setup = true;
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}
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for_each_rtd_codec_dais(rtd, i, codec_dai) {
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component = codec_dai->component;
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/* Set default mclk for internal codec */
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rval = snd_soc_component_set_sysclk(component, 0, 0, DEFAULT_MCLK_RATE,
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SND_SOC_CLOCK_IN);
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if (rval != 0 && rval != -ENOTSUPP) {
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dev_warn(card->dev, "Failed to set mclk: %d\n", rval);
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return rval;
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}
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rval = snd_soc_component_set_jack(component, &pdata->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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return 0;
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}
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static int apq8016_sbc_dai_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
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return apq8016_dai_init(rtd, cpu_dai->id);
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}
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static void apq8016_sbc_add_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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link->init = apq8016_sbc_dai_init;
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}
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static int qdsp6_dai_get_lpass_id(struct snd_soc_dai *cpu_dai)
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{
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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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return MI2S_PRIMARY;
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case SECONDARY_MI2S_RX:
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case SECONDARY_MI2S_TX:
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return MI2S_SECONDARY;
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case TERTIARY_MI2S_RX:
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case TERTIARY_MI2S_TX:
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return MI2S_TERTIARY;
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case QUATERNARY_MI2S_RX:
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case QUATERNARY_MI2S_TX:
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return MI2S_QUATERNARY;
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default:
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return -EINVAL;
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}
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}
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static int msm8916_qdsp6_dai_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
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snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_BP_FP);
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return apq8016_dai_init(rtd, qdsp6_dai_get_lpass_id(cpu_dai));
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}
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static int msm8916_qdsp6_startup(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 apq8016_sbc_data *data = snd_soc_card_get_drvdata(card);
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struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
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int mi2s, ret;
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mi2s = qdsp6_dai_get_lpass_id(cpu_dai);
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if (mi2s < 0)
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return mi2s;
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if (++data->mi2s_clk_count[mi2s] > 1)
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return 0;
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ret = snd_soc_dai_set_sysclk(cpu_dai, LPAIF_BIT_CLK, MI2S_BCLK_RATE, 0);
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if (ret)
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dev_err(card->dev, "Failed to enable LPAIF bit clk: %d\n", ret);
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return ret;
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}
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static void msm8916_qdsp6_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 apq8016_sbc_data *data = snd_soc_card_get_drvdata(card);
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struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
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int mi2s, ret;
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mi2s = qdsp6_dai_get_lpass_id(cpu_dai);
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if (mi2s < 0)
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return;
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if (--data->mi2s_clk_count[mi2s] > 0)
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return;
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ret = snd_soc_dai_set_sysclk(cpu_dai, LPAIF_BIT_CLK, 0, 0);
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if (ret)
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dev_err(card->dev, "Failed to disable LPAIF bit clk: %d\n", ret);
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}
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static const struct snd_soc_ops msm8916_qdsp6_be_ops = {
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.startup = msm8916_qdsp6_startup,
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.shutdown = msm8916_qdsp6_shutdown,
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};
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static int msm8916_qdsp6_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 = 48000;
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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 msm8916_qdsp6_add_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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/* Make it obvious to userspace that QDSP6 is used */
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card->components = "qdsp6";
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for_each_card_prelinks(card, i, link) {
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if (link->no_pcm) {
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link->init = msm8916_qdsp6_dai_init;
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link->ops = &msm8916_qdsp6_be_ops;
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link->be_hw_params_fixup = msm8916_qdsp6_be_hw_params_fixup;
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}
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}
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}
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static const struct snd_soc_dapm_widget apq8016_sbc_dapm_widgets[] = {
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SND_SOC_DAPM_MIC("Handset Mic", NULL),
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SND_SOC_DAPM_MIC("Headset Mic", NULL),
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SND_SOC_DAPM_MIC("Secondary Mic", NULL),
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SND_SOC_DAPM_MIC("Digital Mic1", NULL),
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SND_SOC_DAPM_MIC("Digital Mic2", NULL),
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};
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static int apq8016_sbc_platform_probe(struct platform_device *pdev)
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{
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void (*add_ops)(struct snd_soc_card *card);
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struct device *dev = &pdev->dev;
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struct snd_soc_card *card;
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struct apq8016_sbc_data *data;
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int ret;
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add_ops = device_get_match_data(&pdev->dev);
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if (!add_ops)
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return -EINVAL;
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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 = &data->card;
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card->dev = dev;
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card->owner = THIS_MODULE;
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card->dapm_widgets = apq8016_sbc_dapm_widgets;
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card->num_dapm_widgets = ARRAY_SIZE(apq8016_sbc_dapm_widgets);
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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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data->mic_iomux = devm_platform_ioremap_resource_byname(pdev, "mic-iomux");
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if (IS_ERR(data->mic_iomux))
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return PTR_ERR(data->mic_iomux);
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data->spkr_iomux = devm_platform_ioremap_resource_byname(pdev, "spkr-iomux");
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if (IS_ERR(data->spkr_iomux))
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return PTR_ERR(data->spkr_iomux);
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snd_soc_card_set_drvdata(card, data);
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add_ops(card);
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return devm_snd_soc_register_card(&pdev->dev, card);
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}
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static const struct of_device_id apq8016_sbc_device_id[] __maybe_unused = {
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{ .compatible = "qcom,apq8016-sbc-sndcard", .data = apq8016_sbc_add_ops },
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{ .compatible = "qcom,msm8916-qdsp6-sndcard", .data = msm8916_qdsp6_add_ops },
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{},
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};
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MODULE_DEVICE_TABLE(of, apq8016_sbc_device_id);
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static struct platform_driver apq8016_sbc_platform_driver = {
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.driver = {
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.name = "qcom-apq8016-sbc",
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.of_match_table = of_match_ptr(apq8016_sbc_device_id),
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},
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.probe = apq8016_sbc_platform_probe,
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};
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module_platform_driver(apq8016_sbc_platform_driver);
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MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
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MODULE_DESCRIPTION("APQ8016 ASoC Machine Driver");
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MODULE_LICENSE("GPL v2");
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