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305 lines
8.0 KiB
305 lines
8.0 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* omap3pandora.c -- SoC audio for Pandora Handheld Console |
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* |
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* Author: Gražvydas Ignotas <[email protected]> |
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*/ |
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#include <linux/clk.h> |
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#include <linux/platform_device.h> |
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#include <linux/gpio.h> |
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#include <linux/delay.h> |
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#include <linux/regulator/consumer.h> |
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#include <linux/module.h> |
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#include <sound/core.h> |
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#include <sound/pcm.h> |
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#include <sound/soc.h> |
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#include <asm/mach-types.h> |
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#include <linux/platform_data/asoc-ti-mcbsp.h> |
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#include "omap-mcbsp.h" |
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#define OMAP3_PANDORA_DAC_POWER_GPIO 118 |
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#define OMAP3_PANDORA_AMP_POWER_GPIO 14 |
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#define PREFIX "ASoC omap3pandora: " |
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static struct regulator *omap3pandora_dac_reg; |
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static int omap3pandora_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 = asoc_substream_to_rtd(substream); |
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
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struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); |
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int ret; |
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/* Set the codec system clock for DAC and ADC */ |
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ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000, |
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SND_SOC_CLOCK_IN); |
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if (ret < 0) { |
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pr_err(PREFIX "can't set codec system clock\n"); |
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return ret; |
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} |
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/* Set McBSP clock to external */ |
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ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_SYSCLK_CLKS_EXT, |
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256 * params_rate(params), |
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SND_SOC_CLOCK_IN); |
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if (ret < 0) { |
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pr_err(PREFIX "can't set cpu system clock\n"); |
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return ret; |
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} |
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ret = snd_soc_dai_set_clkdiv(cpu_dai, OMAP_MCBSP_CLKGDV, 8); |
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if (ret < 0) { |
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pr_err(PREFIX "can't set SRG clock divider\n"); |
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return ret; |
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} |
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return 0; |
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} |
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static int omap3pandora_dac_event(struct snd_soc_dapm_widget *w, |
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struct snd_kcontrol *k, int event) |
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{ |
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int ret; |
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/* |
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* The PCM1773 DAC datasheet requires 1ms delay between switching |
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* VCC power on/off and /PD pin high/low |
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*/ |
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if (SND_SOC_DAPM_EVENT_ON(event)) { |
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ret = regulator_enable(omap3pandora_dac_reg); |
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if (ret) { |
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dev_err(w->dapm->dev, "Failed to power DAC: %d\n", ret); |
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return ret; |
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} |
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mdelay(1); |
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gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 1); |
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} else { |
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gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 0); |
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mdelay(1); |
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regulator_disable(omap3pandora_dac_reg); |
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} |
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return 0; |
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} |
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static int omap3pandora_hp_event(struct snd_soc_dapm_widget *w, |
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struct snd_kcontrol *k, int event) |
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{ |
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if (SND_SOC_DAPM_EVENT_ON(event)) |
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gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 1); |
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else |
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gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 0); |
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return 0; |
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} |
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/* |
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* Audio paths on Pandora board: |
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* |
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* |O| ---> PCM DAC +-> AMP -> Headphone Jack |
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* |M| A +--------> Line Out |
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* |A| <~~clk~~+ |
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* |P| <--- TWL4030 <--------- Line In and MICs |
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*/ |
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static const struct snd_soc_dapm_widget omap3pandora_dapm_widgets[] = { |
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SND_SOC_DAPM_DAC_E("PCM DAC", "HiFi Playback", SND_SOC_NOPM, |
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0, 0, omap3pandora_dac_event, |
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SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), |
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SND_SOC_DAPM_PGA_E("Headphone Amplifier", SND_SOC_NOPM, |
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0, 0, NULL, 0, omap3pandora_hp_event, |
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SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), |
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SND_SOC_DAPM_HP("Headphone Jack", NULL), |
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SND_SOC_DAPM_LINE("Line Out", NULL), |
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SND_SOC_DAPM_MIC("Mic (internal)", NULL), |
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SND_SOC_DAPM_MIC("Mic (external)", NULL), |
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SND_SOC_DAPM_LINE("Line In", NULL), |
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}; |
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static const struct snd_soc_dapm_route omap3pandora_map[] = { |
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{"PCM DAC", NULL, "APLL Enable"}, |
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{"Headphone Amplifier", NULL, "PCM DAC"}, |
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{"Line Out", NULL, "PCM DAC"}, |
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{"Headphone Jack", NULL, "Headphone Amplifier"}, |
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{"AUXL", NULL, "Line In"}, |
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{"AUXR", NULL, "Line In"}, |
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{"MAINMIC", NULL, "Mic (internal)"}, |
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{"Mic (internal)", NULL, "Mic Bias 1"}, |
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{"SUBMIC", NULL, "Mic (external)"}, |
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{"Mic (external)", NULL, "Mic Bias 2"}, |
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}; |
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static int omap3pandora_out_init(struct snd_soc_pcm_runtime *rtd) |
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{ |
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struct snd_soc_dapm_context *dapm = &rtd->card->dapm; |
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/* All TWL4030 output pins are floating */ |
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snd_soc_dapm_nc_pin(dapm, "EARPIECE"); |
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snd_soc_dapm_nc_pin(dapm, "PREDRIVEL"); |
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snd_soc_dapm_nc_pin(dapm, "PREDRIVER"); |
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snd_soc_dapm_nc_pin(dapm, "HSOL"); |
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snd_soc_dapm_nc_pin(dapm, "HSOR"); |
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snd_soc_dapm_nc_pin(dapm, "CARKITL"); |
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snd_soc_dapm_nc_pin(dapm, "CARKITR"); |
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snd_soc_dapm_nc_pin(dapm, "HFL"); |
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snd_soc_dapm_nc_pin(dapm, "HFR"); |
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snd_soc_dapm_nc_pin(dapm, "VIBRA"); |
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return 0; |
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} |
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static int omap3pandora_in_init(struct snd_soc_pcm_runtime *rtd) |
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{ |
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struct snd_soc_dapm_context *dapm = &rtd->card->dapm; |
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/* Not comnnected */ |
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snd_soc_dapm_nc_pin(dapm, "HSMIC"); |
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snd_soc_dapm_nc_pin(dapm, "CARKITMIC"); |
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snd_soc_dapm_nc_pin(dapm, "DIGIMIC0"); |
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snd_soc_dapm_nc_pin(dapm, "DIGIMIC1"); |
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return 0; |
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} |
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static const struct snd_soc_ops omap3pandora_ops = { |
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.hw_params = omap3pandora_hw_params, |
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}; |
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/* Digital audio interface glue - connects codec <--> CPU */ |
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SND_SOC_DAILINK_DEFS(out, |
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DAILINK_COMP_ARRAY(COMP_CPU("omap-mcbsp.2")), |
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DAILINK_COMP_ARRAY(COMP_CODEC("twl4030-codec", "twl4030-hifi")), |
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DAILINK_COMP_ARRAY(COMP_PLATFORM("omap-mcbsp.2"))); |
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SND_SOC_DAILINK_DEFS(in, |
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DAILINK_COMP_ARRAY(COMP_CPU("omap-mcbsp.4")), |
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DAILINK_COMP_ARRAY(COMP_CODEC("twl4030-codec", "twl4030-hifi")), |
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DAILINK_COMP_ARRAY(COMP_PLATFORM("omap-mcbsp.4"))); |
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static struct snd_soc_dai_link omap3pandora_dai[] = { |
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{ |
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.name = "PCM1773", |
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.stream_name = "HiFi Out", |
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
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SND_SOC_DAIFMT_CBS_CFS, |
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.ops = &omap3pandora_ops, |
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.init = omap3pandora_out_init, |
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SND_SOC_DAILINK_REG(out), |
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}, { |
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.name = "TWL4030", |
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.stream_name = "Line/Mic In", |
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
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SND_SOC_DAIFMT_CBS_CFS, |
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.ops = &omap3pandora_ops, |
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.init = omap3pandora_in_init, |
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SND_SOC_DAILINK_REG(in), |
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} |
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}; |
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/* SoC card */ |
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static struct snd_soc_card snd_soc_card_omap3pandora = { |
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.name = "omap3pandora", |
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.owner = THIS_MODULE, |
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.dai_link = omap3pandora_dai, |
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.num_links = ARRAY_SIZE(omap3pandora_dai), |
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.dapm_widgets = omap3pandora_dapm_widgets, |
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.num_dapm_widgets = ARRAY_SIZE(omap3pandora_dapm_widgets), |
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.dapm_routes = omap3pandora_map, |
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.num_dapm_routes = ARRAY_SIZE(omap3pandora_map), |
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}; |
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static struct platform_device *omap3pandora_snd_device; |
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static int __init omap3pandora_soc_init(void) |
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{ |
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int ret; |
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if (!machine_is_omap3_pandora()) |
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return -ENODEV; |
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pr_info("OMAP3 Pandora SoC init\n"); |
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ret = gpio_request(OMAP3_PANDORA_DAC_POWER_GPIO, "dac_power"); |
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if (ret) { |
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pr_err(PREFIX "Failed to get DAC power GPIO\n"); |
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return ret; |
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} |
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ret = gpio_direction_output(OMAP3_PANDORA_DAC_POWER_GPIO, 0); |
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if (ret) { |
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pr_err(PREFIX "Failed to set DAC power GPIO direction\n"); |
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goto fail0; |
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} |
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ret = gpio_request(OMAP3_PANDORA_AMP_POWER_GPIO, "amp_power"); |
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if (ret) { |
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pr_err(PREFIX "Failed to get amp power GPIO\n"); |
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goto fail0; |
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} |
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ret = gpio_direction_output(OMAP3_PANDORA_AMP_POWER_GPIO, 0); |
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if (ret) { |
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pr_err(PREFIX "Failed to set amp power GPIO direction\n"); |
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goto fail1; |
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} |
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omap3pandora_snd_device = platform_device_alloc("soc-audio", -1); |
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if (omap3pandora_snd_device == NULL) { |
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pr_err(PREFIX "Platform device allocation failed\n"); |
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ret = -ENOMEM; |
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goto fail1; |
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} |
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platform_set_drvdata(omap3pandora_snd_device, &snd_soc_card_omap3pandora); |
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ret = platform_device_add(omap3pandora_snd_device); |
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if (ret) { |
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pr_err(PREFIX "Unable to add platform device\n"); |
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goto fail2; |
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} |
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omap3pandora_dac_reg = regulator_get(&omap3pandora_snd_device->dev, "vcc"); |
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if (IS_ERR(omap3pandora_dac_reg)) { |
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pr_err(PREFIX "Failed to get DAC regulator from %s: %ld\n", |
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dev_name(&omap3pandora_snd_device->dev), |
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PTR_ERR(omap3pandora_dac_reg)); |
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ret = PTR_ERR(omap3pandora_dac_reg); |
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goto fail3; |
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} |
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return 0; |
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fail3: |
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platform_device_del(omap3pandora_snd_device); |
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fail2: |
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platform_device_put(omap3pandora_snd_device); |
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fail1: |
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gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO); |
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fail0: |
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gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO); |
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return ret; |
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} |
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module_init(omap3pandora_soc_init); |
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static void __exit omap3pandora_soc_exit(void) |
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{ |
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regulator_put(omap3pandora_dac_reg); |
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platform_device_unregister(omap3pandora_snd_device); |
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gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO); |
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gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO); |
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} |
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module_exit(omap3pandora_soc_exit); |
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MODULE_AUTHOR("Grazvydas Ignotas <[email protected]>"); |
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MODULE_DESCRIPTION("ALSA SoC OMAP3 Pandora"); |
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MODULE_LICENSE("GPL");
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