forked from Minki/linux
78adaeb2ae
Visstrim_M10 has an external class D amplifier. This patch provides support for controlling the 4 possible gain levels and per channel muting. Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
243 lines
6.8 KiB
C
243 lines
6.8 KiB
C
/*
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* mx27vis-aic32x4.c
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*
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* Copyright 2011 Vista Silicon S.L.
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*
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* Author: Javier Martin <javier.martin@vista-silicon.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/device.h>
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#include <linux/i2c.h>
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#include <linux/gpio.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 <sound/soc-dapm.h>
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#include <sound/tlv.h>
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#include <asm/mach-types.h>
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#include <mach/audmux.h>
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#include <mach/iomux-mx27.h>
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#include "../codecs/tlv320aic32x4.h"
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#include "imx-ssi.h"
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#define MX27VIS_AMP_GAIN 0
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#define MX27VIS_AMP_MUTE 1
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#define MX27VIS_PIN_G0 (GPIO_PORTF + 9)
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#define MX27VIS_PIN_G1 (GPIO_PORTF + 8)
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#define MX27VIS_PIN_SDL (GPIO_PORTE + 5)
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#define MX27VIS_PIN_SDR (GPIO_PORTF + 7)
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static int mx27vis_amp_gain;
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static int mx27vis_amp_mute;
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static const int mx27vis_amp_pins[] = {
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MX27VIS_PIN_G0 | GPIO_GPIO | GPIO_OUT,
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MX27VIS_PIN_G1 | GPIO_GPIO | GPIO_OUT,
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MX27VIS_PIN_SDL | GPIO_GPIO | GPIO_OUT,
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MX27VIS_PIN_SDR | GPIO_GPIO | GPIO_OUT,
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};
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static int mx27vis_aic32x4_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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u32 dai_format;
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dai_format = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBM_CFM;
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/* set codec DAI configuration */
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snd_soc_dai_set_fmt(codec_dai, dai_format);
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/* set cpu DAI configuration */
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snd_soc_dai_set_fmt(cpu_dai, dai_format);
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ret = snd_soc_dai_set_sysclk(codec_dai, 0,
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25000000, SND_SOC_CLOCK_OUT);
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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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ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
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SND_SOC_CLOCK_IN);
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if (ret) {
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pr_err("can't set CPU system clock IMX_SSP_SYS_CLK\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 struct snd_soc_ops mx27vis_aic32x4_snd_ops = {
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.hw_params = mx27vis_aic32x4_hw_params,
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};
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static int mx27vis_amp_set(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct soc_mixer_control *mc =
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(struct soc_mixer_control *)kcontrol->private_value;
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int value = ucontrol->value.integer.value[0];
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unsigned int reg = mc->reg;
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int max = mc->max;
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if (value > max)
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return -EINVAL;
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switch (reg) {
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case MX27VIS_AMP_GAIN:
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gpio_set_value(MX27VIS_PIN_G0, value & 1);
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gpio_set_value(MX27VIS_PIN_G1, value >> 1);
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mx27vis_amp_gain = value;
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break;
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case MX27VIS_AMP_MUTE:
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gpio_set_value(MX27VIS_PIN_SDL, value & 1);
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gpio_set_value(MX27VIS_PIN_SDR, value >> 1);
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mx27vis_amp_mute = value;
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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 mx27vis_amp_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct soc_mixer_control *mc =
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(struct soc_mixer_control *)kcontrol->private_value;
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unsigned int reg = mc->reg;
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switch (reg) {
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case MX27VIS_AMP_GAIN:
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ucontrol->value.integer.value[0] = mx27vis_amp_gain;
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break;
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case MX27VIS_AMP_MUTE:
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ucontrol->value.integer.value[0] = mx27vis_amp_mute;
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break;
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}
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return 0;
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}
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/* From 6dB to 24dB in steps of 6dB */
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static const DECLARE_TLV_DB_SCALE(mx27vis_amp_tlv, 600, 600, 0);
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static const struct snd_kcontrol_new mx27vis_aic32x4_controls[] = {
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SOC_DAPM_PIN_SWITCH("External Mic"),
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SOC_SINGLE_EXT_TLV("LO Ext Boost", MX27VIS_AMP_GAIN, 0, 3, 0,
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mx27vis_amp_get, mx27vis_amp_set, mx27vis_amp_tlv),
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SOC_DOUBLE_EXT("LO Ext Mute Switch", MX27VIS_AMP_MUTE, 0, 1, 1, 0,
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mx27vis_amp_get, mx27vis_amp_set),
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};
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static const struct snd_soc_dapm_widget aic32x4_dapm_widgets[] = {
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SND_SOC_DAPM_MIC("External Mic", NULL),
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};
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static const struct snd_soc_dapm_route aic32x4_dapm_routes[] = {
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{"Mic Bias", NULL, "External Mic"},
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{"IN1_R", NULL, "Mic Bias"},
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{"IN2_R", NULL, "Mic Bias"},
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{"IN3_R", NULL, "Mic Bias"},
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{"IN1_L", NULL, "Mic Bias"},
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{"IN2_L", NULL, "Mic Bias"},
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{"IN3_L", NULL, "Mic Bias"},
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};
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static struct snd_soc_dai_link mx27vis_aic32x4_dai = {
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.name = "tlv320aic32x4",
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.stream_name = "TLV320AIC32X4",
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.codec_dai_name = "tlv320aic32x4-hifi",
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.platform_name = "imx-pcm-audio.0",
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.codec_name = "tlv320aic32x4.0-0018",
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.cpu_dai_name = "imx-ssi.0",
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.ops = &mx27vis_aic32x4_snd_ops,
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};
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static struct snd_soc_card mx27vis_aic32x4 = {
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.name = "visstrim_m10-audio",
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.owner = THIS_MODULE,
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.dai_link = &mx27vis_aic32x4_dai,
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.num_links = 1,
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.controls = mx27vis_aic32x4_controls,
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.num_controls = ARRAY_SIZE(mx27vis_aic32x4_controls),
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.dapm_widgets = aic32x4_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(aic32x4_dapm_widgets),
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.dapm_routes = aic32x4_dapm_routes,
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.num_dapm_routes = ARRAY_SIZE(aic32x4_dapm_routes),
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};
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static struct platform_device *mx27vis_aic32x4_snd_device;
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static int __init mx27vis_aic32x4_init(void)
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{
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int ret;
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mx27vis_aic32x4_snd_device = platform_device_alloc("soc-audio", -1);
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if (!mx27vis_aic32x4_snd_device)
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return -ENOMEM;
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platform_set_drvdata(mx27vis_aic32x4_snd_device, &mx27vis_aic32x4);
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ret = platform_device_add(mx27vis_aic32x4_snd_device);
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if (ret) {
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printk(KERN_ERR "ASoC: Platform device allocation failed\n");
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platform_device_put(mx27vis_aic32x4_snd_device);
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}
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/* Connect SSI0 as clock slave to SSI1 external pins */
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mxc_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
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MXC_AUDMUX_V1_PCR_SYN |
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MXC_AUDMUX_V1_PCR_TFSDIR |
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MXC_AUDMUX_V1_PCR_TCLKDIR |
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MXC_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_PPCR1_SSI_PINS_1) |
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MXC_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_PPCR1_SSI_PINS_1)
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);
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mxc_audmux_v1_configure_port(MX27_AUDMUX_PPCR1_SSI_PINS_1,
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MXC_AUDMUX_V1_PCR_SYN |
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MXC_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
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);
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ret = mxc_gpio_setup_multiple_pins(mx27vis_amp_pins,
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ARRAY_SIZE(mx27vis_amp_pins), "MX27VIS_AMP");
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if (ret) {
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printk(KERN_ERR "ASoC: unable to setup gpios\n");
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platform_device_put(mx27vis_aic32x4_snd_device);
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}
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return ret;
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}
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static void __exit mx27vis_aic32x4_exit(void)
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{
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platform_device_unregister(mx27vis_aic32x4_snd_device);
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}
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module_init(mx27vis_aic32x4_init);
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module_exit(mx27vis_aic32x4_exit);
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MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com>");
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MODULE_DESCRIPTION("ALSA SoC AIC32X4 mx27 visstrim");
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MODULE_LICENSE("GPL");
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