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https://github.com/edk2-porting/linux-next.git
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022658beab
Currently ASoC can only add kcontrols using codec and platform component device handles. It's also desirable to add kcontrols for DAIs (i.e. McBSP) and for SoC card machine drivers too. This allows the kcontrol to have a direct handle to the parent ASoC component DAI/SoC Card/Platform/Codec device and hence easily get it's private data. This change makes snd_soc_add_controls() static and wraps it in the folowing calls (card and dai are new) :- snd_soc_add_card_controls() snd_soc_add_codec_controls() snd_soc_add_dai_controls() snd_soc_add_platform_controls() This patch also does a lot of small mechanical changes in individual codec drivers to replace snd_soc_add_controls() with snd_soc_add_codec_controls(). It also updates the McBSP DAI driver to use snd_soc_add_dai_controls(). Finally, it updates the existing machine drivers that register controls to either :- 1) Use snd_soc_add_card_controls() where no direct codec control is required. 2) Use snd_soc_add_codec_controls() where there is direct codec control. In the case of 1) above we also update the machine drivers to get the correct component data pointers from the kcontrol (rather than getting the machine pointer via the codec pointer). Signed-off-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
389 lines
9.1 KiB
C
389 lines
9.1 KiB
C
/* sound/soc/samsung/s3c24xx_simtec.c
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*
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* Copyright 2009 Simtec Electronics
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/gpio.h>
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#include <linux/clk.h>
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#include <linux/module.h>
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#include <sound/soc.h>
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#include <plat/audio-simtec.h>
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#include "s3c24xx-i2s.h"
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#include "s3c24xx_simtec.h"
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static struct s3c24xx_audio_simtec_pdata *pdata;
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static struct clk *xtal_clk;
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static int spk_gain;
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static int spk_unmute;
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/**
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* speaker_gain_get - read the speaker gain setting.
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* @kcontrol: The control for the speaker gain.
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* @ucontrol: The value that needs to be updated.
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*
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* Read the value for the AMP gain control.
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*/
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static int speaker_gain_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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ucontrol->value.integer.value[0] = spk_gain;
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return 0;
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}
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/**
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* speaker_gain_set - set the value of the speaker amp gain
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* @value: The value to write.
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*/
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static void speaker_gain_set(int value)
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{
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gpio_set_value_cansleep(pdata->amp_gain[0], value & 1);
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gpio_set_value_cansleep(pdata->amp_gain[1], value >> 1);
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}
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/**
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* speaker_gain_put - set the speaker gain setting.
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* @kcontrol: The control for the speaker gain.
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* @ucontrol: The value that needs to be set.
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*
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* Set the value of the speaker gain from the specified
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* @ucontrol setting.
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*
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* Note, if the speaker amp is muted, then we do not set a gain value
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* as at-least one of the ICs that is fitted will try and power up even
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* if the main control is set to off.
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*/
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static int speaker_gain_put(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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int value = ucontrol->value.integer.value[0];
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spk_gain = value;
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if (!spk_unmute)
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speaker_gain_set(value);
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return 0;
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}
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static const struct snd_kcontrol_new amp_gain_controls[] = {
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SOC_SINGLE_EXT("Speaker Gain", 0, 0, 3, 0,
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speaker_gain_get, speaker_gain_put),
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};
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/**
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* spk_unmute_state - set the unmute state of the speaker
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* @to: zero to unmute, non-zero to ununmute.
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*/
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static void spk_unmute_state(int to)
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{
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pr_debug("%s: to=%d\n", __func__, to);
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spk_unmute = to;
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gpio_set_value(pdata->amp_gpio, to);
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/* if we're umuting, also re-set the gain */
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if (to && pdata->amp_gain[0] > 0)
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speaker_gain_set(spk_gain);
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}
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/**
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* speaker_unmute_get - read the speaker unmute setting.
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* @kcontrol: The control for the speaker gain.
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* @ucontrol: The value that needs to be updated.
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*
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* Read the value for the AMP gain control.
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*/
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static int speaker_unmute_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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ucontrol->value.integer.value[0] = spk_unmute;
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return 0;
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}
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/**
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* speaker_unmute_put - set the speaker unmute setting.
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* @kcontrol: The control for the speaker gain.
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* @ucontrol: The value that needs to be set.
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*
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* Set the value of the speaker gain from the specified
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* @ucontrol setting.
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*/
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static int speaker_unmute_put(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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spk_unmute_state(ucontrol->value.integer.value[0]);
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return 0;
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}
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/* This is added as a manual control as the speaker amps create clicks
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* when their power state is changed, which are far more noticeable than
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* anything produced by the CODEC itself.
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*/
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static const struct snd_kcontrol_new amp_unmute_controls[] = {
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SOC_SINGLE_EXT("Speaker Switch", 0, 0, 1, 0,
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speaker_unmute_get, speaker_unmute_put),
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};
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void simtec_audio_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct snd_soc_card *card = rtd->card;
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if (pdata->amp_gpio > 0) {
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pr_debug("%s: adding amp routes\n", __func__);
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snd_soc_add_card_controls(card, amp_unmute_controls,
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ARRAY_SIZE(amp_unmute_controls));
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}
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if (pdata->amp_gain[0] > 0) {
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pr_debug("%s: adding amp controls\n", __func__);
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snd_soc_add_card_controls(card, amp_gain_controls,
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ARRAY_SIZE(amp_gain_controls));
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}
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}
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EXPORT_SYMBOL_GPL(simtec_audio_init);
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#define CODEC_CLOCK 12000000
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/**
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* simtec_hw_params - update hardware parameters
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* @substream: The audio substream instance.
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* @params: The parameters requested.
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*
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* Update the codec data routing and configuration settings
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* from the supplied data.
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*/
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static int simtec_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 = rtd->codec_dai;
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struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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int ret;
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/* Set the CODEC as the bus clock master, I2S */
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ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
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SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBM_CFM);
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if (ret) {
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pr_err("%s: failed set cpu dai format\n", __func__);
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return ret;
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}
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/* Set the CODEC as the bus clock master */
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ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
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SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBM_CFM);
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if (ret) {
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pr_err("%s: failed set codec dai format\n", __func__);
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return ret;
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}
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ret = snd_soc_dai_set_sysclk(codec_dai, 0,
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CODEC_CLOCK, SND_SOC_CLOCK_IN);
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if (ret) {
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pr_err( "%s: failed setting codec sysclk\n", __func__);
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return ret;
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}
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if (pdata->use_mpllin) {
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ret = snd_soc_dai_set_sysclk(cpu_dai, S3C24XX_CLKSRC_MPLL,
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0, SND_SOC_CLOCK_OUT);
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if (ret) {
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pr_err("%s: failed to set MPLLin as clksrc\n",
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__func__);
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return ret;
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}
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}
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if (pdata->output_cdclk) {
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int cdclk_scale;
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cdclk_scale = clk_get_rate(xtal_clk) / CODEC_CLOCK;
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cdclk_scale--;
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ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
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cdclk_scale);
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}
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return 0;
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}
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static int simtec_call_startup(struct s3c24xx_audio_simtec_pdata *pd)
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{
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/* call any board supplied startup code, this currently only
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* covers the bast/vr1000 which have a CPLD in the way of the
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* LRCLK */
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if (pd->startup)
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pd->startup();
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return 0;
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}
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static struct snd_soc_ops simtec_snd_ops = {
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.hw_params = simtec_hw_params,
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};
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/**
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* attach_gpio_amp - get and configure the necessary gpios
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* @dev: The device we're probing.
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* @pd: The platform data supplied by the board.
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*
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* If there is a GPIO based amplifier attached to the board, claim
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* the necessary GPIO lines for it, and set default values.
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*/
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static int attach_gpio_amp(struct device *dev,
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struct s3c24xx_audio_simtec_pdata *pd)
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{
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int ret;
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/* attach gpio amp gain (if any) */
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if (pdata->amp_gain[0] > 0) {
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ret = gpio_request(pd->amp_gain[0], "gpio-amp-gain0");
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if (ret) {
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dev_err(dev, "cannot get amp gpio gain0\n");
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return ret;
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}
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ret = gpio_request(pd->amp_gain[1], "gpio-amp-gain1");
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if (ret) {
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dev_err(dev, "cannot get amp gpio gain1\n");
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gpio_free(pdata->amp_gain[0]);
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return ret;
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}
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gpio_direction_output(pd->amp_gain[0], 0);
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gpio_direction_output(pd->amp_gain[1], 0);
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}
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/* note, currently we assume GPA0 isn't valid amp */
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if (pdata->amp_gpio > 0) {
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ret = gpio_request(pd->amp_gpio, "gpio-amp");
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if (ret) {
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dev_err(dev, "cannot get amp gpio %d (%d)\n",
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pd->amp_gpio, ret);
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goto err_amp;
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}
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/* set the amp off at startup */
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spk_unmute_state(0);
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}
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return 0;
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err_amp:
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if (pd->amp_gain[0] > 0) {
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gpio_free(pd->amp_gain[0]);
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gpio_free(pd->amp_gain[1]);
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}
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return ret;
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}
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static void detach_gpio_amp(struct s3c24xx_audio_simtec_pdata *pd)
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{
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if (pd->amp_gain[0] > 0) {
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gpio_free(pd->amp_gain[0]);
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gpio_free(pd->amp_gain[1]);
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}
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if (pd->amp_gpio > 0)
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gpio_free(pd->amp_gpio);
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}
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#ifdef CONFIG_PM
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static int simtec_audio_resume(struct device *dev)
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{
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simtec_call_startup(pdata);
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return 0;
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}
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const struct dev_pm_ops simtec_audio_pmops = {
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.resume = simtec_audio_resume,
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};
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EXPORT_SYMBOL_GPL(simtec_audio_pmops);
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#endif
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int __devinit simtec_audio_core_probe(struct platform_device *pdev,
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struct snd_soc_card *card)
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{
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struct platform_device *snd_dev;
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int ret;
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card->dai_link->ops = &simtec_snd_ops;
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pdata = pdev->dev.platform_data;
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if (!pdata) {
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dev_err(&pdev->dev, "no platform data supplied\n");
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return -EINVAL;
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}
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simtec_call_startup(pdata);
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xtal_clk = clk_get(&pdev->dev, "xtal");
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if (IS_ERR(xtal_clk)) {
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dev_err(&pdev->dev, "could not get clkout0\n");
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return -EINVAL;
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}
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dev_info(&pdev->dev, "xtal rate is %ld\n", clk_get_rate(xtal_clk));
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ret = attach_gpio_amp(&pdev->dev, pdata);
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if (ret)
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goto err_clk;
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snd_dev = platform_device_alloc("soc-audio", -1);
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if (!snd_dev) {
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dev_err(&pdev->dev, "failed to alloc soc-audio devicec\n");
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ret = -ENOMEM;
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goto err_gpio;
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}
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platform_set_drvdata(snd_dev, card);
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ret = platform_device_add(snd_dev);
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if (ret) {
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dev_err(&pdev->dev, "failed to add soc-audio dev\n");
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goto err_pdev;
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}
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platform_set_drvdata(pdev, snd_dev);
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return 0;
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err_pdev:
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platform_device_put(snd_dev);
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err_gpio:
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detach_gpio_amp(pdata);
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err_clk:
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clk_put(xtal_clk);
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return ret;
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}
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EXPORT_SYMBOL_GPL(simtec_audio_core_probe);
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int __devexit simtec_audio_remove(struct platform_device *pdev)
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{
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struct platform_device *snd_dev = platform_get_drvdata(pdev);
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platform_device_unregister(snd_dev);
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detach_gpio_amp(pdata);
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clk_put(xtal_clk);
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return 0;
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}
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EXPORT_SYMBOL_GPL(simtec_audio_remove);
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MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
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MODULE_DESCRIPTION("ALSA SoC Simtec Audio common support");
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MODULE_LICENSE("GPL");
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