--- /dev/null
+From 7603d4cf7fb47afc19641b518250ee52852470f6 Mon Sep 17 00:00:00 2001
+From: Raashid Muhammed <raashidmuhammed@zilogic.com>
+Date: Mon, 27 Mar 2017 12:35:00 +0530
+Subject: [PATCH] Add support for Allo Piano DAC 2.1 plus add-on board
+ for Raspberry Pi.
+
+The Piano DAC 2.1 has support for 4 channels with subwoofer.
+
+Signed-off-by: Baswaraj K <jaikumar@cem-solutions.net>
+Reviewed-by: Vijay Kumar B. <vijaykumar@zilogic.com>
+Reviewed-by: Raashid Muhammed <raashidmuhammed@zilogic.com>
+
+Add clock changes and mute gpios (#1938)
+
+Also improve code style and adhere to ALSA coding conventions.
+
+Signed-off-by: Baswaraj K <jaikumar@cem-solutions.net>
+Reviewed-by: Vijay Kumar B. <vijaykumar@zilogic.com>
+Reviewed-by: Raashid Muhammed <raashidmuhammed@zilogic.com>
+
+PianoPlus: Dual Mono & Dual Stereo features added (#2069)
+
+allo-piano-dac-plus: Master volume added + fixes
+
+Master volume added, which controls both DACs volumes.
+
+See: https://github.com/raspberrypi/linux/pull/2149
+
+Also fix initial max volume, default mode value, and unmute.
+
+Signed-off-by: allocom <sparky-dev@allo.com>
+
+ASoC: allo-piano-dac-plus: fix S24_LE format
+
+Remove set_bclk_ratio call so 24-bit data is transmitted in
+24 bclk cycles.
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+---
+ sound/soc/bcm/allo-piano-dac-plus.c | 1011 +++++++++++++++++++++++++++
+ 1 file changed, 1011 insertions(+)
+ create mode 100644 sound/soc/bcm/allo-piano-dac-plus.c
+
+--- /dev/null
++++ b/sound/soc/bcm/allo-piano-dac-plus.c
+@@ -0,0 +1,1011 @@
++/*
++ * ALSA ASoC Machine Driver for Allo Piano DAC Plus Subwoofer
++ *
++ * Author: Baswaraj K <jaikumar@cem-solutions.net>
++ * Copyright 2016
++ * based on code by Daniel Matuschek <info@crazy-audio.com>
++ * based on code by Florian Meier <florian.meier@koalo.de>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/gpio/consumer.h>
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <linux/firmware.h>
++#include <linux/delay.h>
++#include <sound/tlv.h>
++#include "../codecs/pcm512x.h"
++
++#define P_DAC_LEFT_MUTE 0x10
++#define P_DAC_RIGHT_MUTE 0x01
++#define P_DAC_MUTE 0x11
++#define P_DAC_UNMUTE 0x00
++#define P_MUTE 1
++#define P_UNMUTE 0
++
++struct dsp_code {
++ char i2c_addr;
++ char offset;
++ char val;
++};
++
++struct glb_pool {
++ struct mutex lock;
++ unsigned int dual_mode;
++ unsigned int set_lowpass;
++ unsigned int set_mode;
++ unsigned int set_rate;
++ unsigned int dsp_page_number;
++};
++
++static bool digital_gain_0db_limit = true;
++bool glb_mclk;
++
++static struct gpio_desc *mute_gpio[2];
++
++static const char * const allo_piano_mode_texts[] = {
++ "None",
++ "2.0",
++ "2.1",
++ "2.2",
++};
++
++static const SOC_ENUM_SINGLE_DECL(allo_piano_mode_enum,
++ 0, 0, allo_piano_mode_texts);
++
++static const char * const allo_piano_dual_mode_texts[] = {
++ "None",
++ "Dual-Mono",
++ "Dual-Stereo",
++};
++
++static const SOC_ENUM_SINGLE_DECL(allo_piano_dual_mode_enum,
++ 0, 0, allo_piano_dual_mode_texts);
++
++static const char * const allo_piano_dsp_low_pass_texts[] = {
++ "60",
++ "70",
++ "80",
++ "90",
++ "100",
++ "110",
++ "120",
++ "130",
++ "140",
++ "150",
++ "160",
++ "170",
++ "180",
++ "190",
++ "200",
++};
++
++static const SOC_ENUM_SINGLE_DECL(allo_piano_enum,
++ 0, 0, allo_piano_dsp_low_pass_texts);
++
++static int __snd_allo_piano_dsp_program(struct snd_soc_pcm_runtime *rtd,
++ unsigned int mode, unsigned int rate, unsigned int lowpass)
++{
++ const struct firmware *fw;
++ struct snd_soc_card *card = rtd->card;
++ struct glb_pool *glb_ptr = card->drvdata;
++ char firmware_name[60];
++ int ret = 0, dac = 0;
++
++ if (rate <= 46000)
++ rate = 44100;
++ else if (rate <= 68000)
++ rate = 48000;
++ else if (rate <= 92000)
++ rate = 88200;
++ else if (rate <= 136000)
++ rate = 96000;
++ else if (rate <= 184000)
++ rate = 176400;
++ else
++ rate = 192000;
++
++ if (lowpass > 14)
++ glb_ptr->set_lowpass = lowpass = 0;
++
++ if (mode > 3)
++ glb_ptr->set_mode = mode = 0;
++
++ if (mode > 0)
++ glb_ptr->dual_mode = 0;
++
++ /* same configuration loaded */
++ if ((rate == glb_ptr->set_rate) && (lowpass == glb_ptr->set_lowpass)
++ && (mode == glb_ptr->set_mode))
++ return 0;
++
++ switch (mode) {
++ case 0: /* None */
++ return 1;
++
++ case 1: /* 2.0 */
++ snd_soc_component_write(rtd->codec_dais[0]->component,
++ PCM512x_MUTE, P_DAC_UNMUTE);
++ snd_soc_component_write(rtd->codec_dais[1]->component,
++ PCM512x_MUTE, P_DAC_MUTE);
++ glb_ptr->set_rate = rate;
++ glb_ptr->set_mode = mode;
++ glb_ptr->set_lowpass = lowpass;
++ return 1;
++
++ default:
++ snd_soc_component_write(rtd->codec_dais[0]->component,
++ PCM512x_MUTE, P_DAC_UNMUTE);
++ snd_soc_component_write(rtd->codec_dais[1]->component,
++ PCM512x_MUTE, P_DAC_UNMUTE);
++ }
++
++ for (dac = 0; dac < rtd->num_codecs; dac++) {
++ struct dsp_code *dsp_code_read;
++ int i = 1;
++
++ if (dac == 0) { /* high */
++ snprintf(firmware_name, sizeof(firmware_name),
++ "allo/piano/2.2/allo-piano-dsp-%d-%d-%d.bin",
++ rate, ((lowpass * 10) + 60), dac);
++ } else { /* low */
++ snprintf(firmware_name, sizeof(firmware_name),
++ "allo/piano/2.%d/allo-piano-dsp-%d-%d-%d.bin",
++ (mode - 1), rate, ((lowpass * 10) + 60), dac);
++ }
++
++ dev_info(rtd->card->dev, "Dsp Firmware File Name: %s\n",
++ firmware_name);
++
++ ret = request_firmware(&fw, firmware_name, rtd->card->dev);
++ if (ret < 0) {
++ dev_err(rtd->card->dev,
++ "Error: Allo Piano Firmware %s missing. %d\n",
++ firmware_name, ret);
++ goto err;
++ }
++
++ while (i < (fw->size - 1)) {
++ dsp_code_read = (struct dsp_code *)&fw->data[i];
++
++ if (dsp_code_read->offset == 0) {
++ glb_ptr->dsp_page_number = dsp_code_read->val;
++ ret = snd_soc_component_write(rtd->codec_dais[dac]->component,
++ PCM512x_PAGE_BASE(0),
++ dsp_code_read->val);
++
++ } else if (dsp_code_read->offset != 0) {
++ ret = snd_soc_component_write(rtd->codec_dais[dac]->component,
++ (PCM512x_PAGE_BASE(
++ glb_ptr->dsp_page_number) +
++ dsp_code_read->offset),
++ dsp_code_read->val);
++ }
++ if (ret < 0) {
++ dev_err(rtd->card->dev,
++ "Failed to write Register: %d\n", ret);
++ release_firmware(fw);
++ goto err;
++ }
++ i = i + 3;
++ }
++ release_firmware(fw);
++ }
++ glb_ptr->set_rate = rate;
++ glb_ptr->set_mode = mode;
++ glb_ptr->set_lowpass = lowpass;
++ return 1;
++
++err:
++ return ret;
++}
++
++static int snd_allo_piano_dsp_program(struct snd_soc_pcm_runtime *rtd,
++ unsigned int mode, unsigned int rate, unsigned int lowpass)
++{
++ struct snd_soc_card *card = rtd->card;
++ struct glb_pool *glb_ptr = card->drvdata;
++ int ret = 0;
++
++ mutex_lock(&glb_ptr->lock);
++
++ ret = __snd_allo_piano_dsp_program(rtd, mode, rate, lowpass);
++
++ mutex_unlock(&glb_ptr->lock);
++
++ return ret;
++}
++
++static int snd_allo_piano_dual_mode_get(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++ struct glb_pool *glb_ptr = card->drvdata;
++
++ ucontrol->value.integer.value[0] = glb_ptr->dual_mode;
++
++ return 0;
++}
++
++static int snd_allo_piano_dual_mode_put(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++ struct glb_pool *glb_ptr = card->drvdata;
++ struct snd_soc_pcm_runtime *rtd;
++ struct snd_card *snd_card_ptr = card->snd_card;
++ struct snd_kcontrol *kctl;
++ struct soc_mixer_control *mc;
++ unsigned int left_val = 0, right_val = 0;
++
++ rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
++
++ if (ucontrol->value.integer.value[0] > 0) {
++ glb_ptr->dual_mode = ucontrol->value.integer.value[0];
++ glb_ptr->set_mode = 0;
++ } else {
++ if (glb_ptr->set_mode <= 0) {
++ glb_ptr->dual_mode = 1;
++ glb_ptr->set_mode = 0;
++ } else {
++ glb_ptr->dual_mode = 0;
++ return 0;
++ }
++ }
++
++ if (glb_ptr->dual_mode == 1) { // Dual Mono
++ snd_soc_component_write(rtd->codec_dais[0]->component,
++ PCM512x_MUTE, P_DAC_RIGHT_MUTE);
++ snd_soc_component_write(rtd->codec_dais[1]->component,
++ PCM512x_MUTE, P_DAC_LEFT_MUTE);
++ snd_soc_component_write(rtd->codec_dais[0]->component,
++ PCM512x_DIGITAL_VOLUME_3, 0xff);
++ snd_soc_component_write(rtd->codec_dais[1]->component,
++ PCM512x_DIGITAL_VOLUME_2, 0xff);
++
++ list_for_each_entry(kctl, &snd_card_ptr->controls, list) {
++ if (!strncmp(kctl->id.name, "Digital Playback Volume",
++ sizeof(kctl->id.name))) {
++ mc = (struct soc_mixer_control *)
++ kctl->private_value;
++ mc->rreg = mc->reg;
++ break;
++ }
++ }
++ } else {
++ snd_soc_component_read(rtd->codec_dais[0]->component,
++ PCM512x_DIGITAL_VOLUME_2, &left_val);
++ snd_soc_component_read(rtd->codec_dais[1]->component,
++ PCM512x_DIGITAL_VOLUME_3, &right_val);
++
++ list_for_each_entry(kctl, &snd_card_ptr->controls, list) {
++ if (!strncmp(kctl->id.name, "Digital Playback Volume",
++ sizeof(kctl->id.name))) {
++ mc = (struct soc_mixer_control *)
++ kctl->private_value;
++ mc->rreg = PCM512x_DIGITAL_VOLUME_3;
++ break;
++ }
++ }
++
++ snd_soc_component_write(rtd->codec_dais[0]->component,
++ PCM512x_DIGITAL_VOLUME_3, left_val);
++ snd_soc_component_write(rtd->codec_dais[1]->component,
++ PCM512x_DIGITAL_VOLUME_2, right_val);
++ snd_soc_component_write(rtd->codec_dais[0]->component,
++ PCM512x_MUTE, P_DAC_UNMUTE);
++ snd_soc_component_write(rtd->codec_dais[1]->component,
++ PCM512x_MUTE, P_DAC_UNMUTE);
++ }
++
++ return 0;
++}
++
++static int snd_allo_piano_mode_get(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++ struct glb_pool *glb_ptr = card->drvdata;
++
++ ucontrol->value.integer.value[0] = glb_ptr->set_mode;
++ return 0;
++}
++
++static int snd_allo_piano_mode_put(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++ struct snd_soc_pcm_runtime *rtd;
++ struct glb_pool *glb_ptr = card->drvdata;
++ struct snd_card *snd_card_ptr = card->snd_card;
++ struct snd_kcontrol *kctl;
++ struct soc_mixer_control *mc;
++ unsigned int left_val = 0, right_val = 0;
++
++ rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
++
++ if ((glb_ptr->dual_mode == 1) &&
++ (ucontrol->value.integer.value[0] > 0)) {
++ snd_soc_component_read(rtd->codec_dais[0]->component,
++ PCM512x_DIGITAL_VOLUME_2, &left_val);
++ snd_soc_component_read(rtd->codec_dais[1]->component,
++ PCM512x_DIGITAL_VOLUME_2, &right_val);
++
++ list_for_each_entry(kctl, &snd_card_ptr->controls, list) {
++ if (!strncmp(kctl->id.name, "Digital Playback Volume",
++ sizeof(kctl->id.name))) {
++ mc = (struct soc_mixer_control *)
++ kctl->private_value;
++ mc->rreg = PCM512x_DIGITAL_VOLUME_3;
++ break;
++ }
++ }
++ snd_soc_component_write(rtd->codec_dais[0]->component,
++ PCM512x_DIGITAL_VOLUME_3, left_val);
++ snd_soc_component_write(rtd->codec_dais[1]->component,
++ PCM512x_DIGITAL_VOLUME_3, right_val);
++ }
++
++ return(snd_allo_piano_dsp_program(rtd,
++ ucontrol->value.integer.value[0],
++ glb_ptr->set_rate, glb_ptr->set_lowpass));
++}
++
++static int snd_allo_piano_lowpass_get(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++ struct glb_pool *glb_ptr = card->drvdata;
++
++ ucontrol->value.integer.value[0] = glb_ptr->set_lowpass;
++ return 0;
++}
++
++static int snd_allo_piano_lowpass_put(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++ struct snd_soc_pcm_runtime *rtd;
++ struct glb_pool *glb_ptr = card->drvdata;
++
++ rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
++ return(snd_allo_piano_dsp_program(rtd,
++ glb_ptr->set_mode, glb_ptr->set_rate,
++ ucontrol->value.integer.value[0]));
++}
++
++static int pcm512x_get_reg_sub(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ struct soc_mixer_control *mc =
++ (struct soc_mixer_control *)kcontrol->private_value;
++ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++ struct glb_pool *glb_ptr = card->drvdata;
++ struct snd_soc_pcm_runtime *rtd;
++ unsigned int left_val = 0;
++ unsigned int right_val = 0;
++ int ret;
++ rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
++ ret = snd_soc_component_read(rtd->codec_dais[1]->component,
++ PCM512x_DIGITAL_VOLUME_3, &right_val);
++ if (ret < 0)
++ return ret;
++
++ if (glb_ptr->dual_mode != 1) {
++ ret = snd_soc_component_read(rtd->codec_dais[1]->component,
++ PCM512x_DIGITAL_VOLUME_2, &left_val);
++ if ( ret < 0)
++ return ret;
++
++ } else {
++ left_val = right_val;
++ }
++
++ ucontrol->value.integer.value[0] =
++ (~(left_val >> mc->shift)) & mc->max;
++ ucontrol->value.integer.value[1] =
++ (~(right_val >> mc->shift)) & mc->max;
++
++ return 0;
++}
++
++static int pcm512x_set_reg_sub(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ struct soc_mixer_control *mc =
++ (struct soc_mixer_control *)kcontrol->private_value;
++ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++ struct glb_pool *glb_ptr = card->drvdata;
++ struct snd_soc_pcm_runtime *rtd;
++ unsigned int left_val = (ucontrol->value.integer.value[0] & mc->max);
++ unsigned int right_val = (ucontrol->value.integer.value[1] & mc->max);
++ int ret = 0;
++
++ rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
++ if (glb_ptr->dual_mode != 1) {
++ ret = snd_soc_component_write(rtd->codec_dais[1]->component,
++ PCM512x_DIGITAL_VOLUME_2, (~left_val));
++ if (ret < 0)
++ return ret;
++ }
++
++ if (digital_gain_0db_limit) {
++ ret = snd_soc_limit_volume(card, "Subwoofer Playback Volume",
++ 207);
++ if (ret < 0)
++ dev_warn(card->dev, "Failed to set volume limit: %d\n",
++ ret);
++ }
++
++ ret = snd_soc_component_write(rtd->codec_dais[1]->component,
++ PCM512x_DIGITAL_VOLUME_3, (~right_val));
++ if (ret < 0)
++ return ret;
++
++ return 1;
++}
++
++static int pcm512x_get_reg_sub_switch(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++ struct snd_soc_pcm_runtime *rtd;
++ int val = 0;
++ int ret;
++
++ rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
++ ret = snd_soc_component_read(rtd->codec_dais[1]->component, PCM512x_MUTE, &val);
++ if (ret < 0)
++ return ret;
++
++ ucontrol->value.integer.value[0] =
++ (val & P_DAC_LEFT_MUTE) ? P_UNMUTE : P_MUTE;
++ ucontrol->value.integer.value[1] =
++ (val & P_DAC_RIGHT_MUTE) ? P_UNMUTE : P_MUTE;
++
++ return val;
++}
++
++static int pcm512x_set_reg_sub_switch(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++ struct snd_soc_pcm_runtime *rtd;
++ struct glb_pool *glb_ptr = card->drvdata;
++ unsigned int left_val = (ucontrol->value.integer.value[0]);
++ unsigned int right_val = (ucontrol->value.integer.value[1]);
++ int ret = 0;
++
++ rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
++ if (glb_ptr->set_mode != 1) {
++ ret = snd_soc_component_write(rtd->codec_dais[1]->component, PCM512x_MUTE,
++ ~((left_val & 0x01)<<4 | (right_val & 0x01)));
++ if (ret < 0)
++ return ret;
++ }
++ return 1;
++
++}
++
++static int pcm512x_get_reg_master(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ struct soc_mixer_control *mc =
++ (struct soc_mixer_control *)kcontrol->private_value;
++ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++ struct glb_pool *glb_ptr = card->drvdata;
++ struct snd_soc_pcm_runtime *rtd;
++ unsigned int left_val = 0, right_val = 0;
++ int ret;
++
++ rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
++
++ ret = snd_soc_component_read(rtd->codec_dais[0]->component,
++ PCM512x_DIGITAL_VOLUME_2, &left_val);
++ if ( ret < 0)
++ return ret;
++
++ if (glb_ptr->dual_mode == 1) {
++ ret = snd_soc_component_read(rtd->codec_dais[1]->component,
++ PCM512x_DIGITAL_VOLUME_3, &right_val);
++ if (ret < 0)
++ return ret;
++ } else {
++ ret = snd_soc_component_read(rtd->codec_dais[0]->component,
++ PCM512x_DIGITAL_VOLUME_3, &right_val);
++ if (ret < 0)
++ return ret;
++ }
++
++ ucontrol->value.integer.value[0] =
++ (~(left_val >> mc->shift)) & mc->max;
++ ucontrol->value.integer.value[1] =
++ (~(right_val >> mc->shift)) & mc->max;
++
++ return 0;
++}
++
++static int pcm512x_set_reg_master(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ struct soc_mixer_control *mc =
++ (struct soc_mixer_control *)kcontrol->private_value;
++ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++ struct glb_pool *glb_ptr = card->drvdata;
++ struct snd_soc_pcm_runtime *rtd;
++ unsigned int left_val = (ucontrol->value.integer.value[0] & mc->max);
++ unsigned int right_val = (ucontrol->value.integer.value[1] & mc->max);
++ int ret = 0;
++
++ rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
++
++ if (digital_gain_0db_limit) {
++ ret = snd_soc_limit_volume(card, "Master Playback Volume",
++ 207);
++ if (ret < 0)
++ dev_warn(card->dev, "Failed to set volume limit: %d\n",
++ ret);
++ }
++
++ if (glb_ptr->dual_mode != 1) {
++ ret = snd_soc_component_write(rtd->codec_dais[1]->component,
++ PCM512x_DIGITAL_VOLUME_2, (~left_val));
++ if (ret < 0)
++ return ret;
++
++ ret = snd_soc_component_write(rtd->codec_dais[0]->component,
++ PCM512x_DIGITAL_VOLUME_3, (~right_val));
++ if (ret < 0)
++ return ret;
++
++ }
++
++ ret = snd_soc_component_write(rtd->codec_dais[1]->component,
++ PCM512x_DIGITAL_VOLUME_3, (~right_val));
++ if (ret < 0)
++ return ret;
++
++ ret = snd_soc_component_write(rtd->codec_dais[0]->component,
++ PCM512x_DIGITAL_VOLUME_2, (~left_val));
++ if (ret < 0)
++ return ret;
++ return 1;
++}
++
++static int pcm512x_get_reg_master_switch(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++ struct glb_pool *glb_ptr = card->drvdata;
++ struct snd_soc_pcm_runtime *rtd;
++ int val = 0;
++ int ret;
++
++ rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
++
++ ret = snd_soc_component_read(rtd->codec_dais[0]->component, PCM512x_MUTE, &val);
++ if (ret < 0)
++ return ret;
++
++ ucontrol->value.integer.value[0] =
++ (val & P_DAC_LEFT_MUTE) ? P_UNMUTE : P_MUTE;
++
++ if (glb_ptr->dual_mode == 1) {
++ ret = snd_soc_component_read(rtd->codec_dais[1]->component, PCM512x_MUTE, &val);
++ if (ret < 0)
++ return ret;
++ }
++ ucontrol->value.integer.value[1] =
++ (val & P_DAC_RIGHT_MUTE) ? P_UNMUTE : P_MUTE;
++
++ return val;
++}
++
++static int pcm512x_set_reg_master_switch(struct snd_kcontrol *kcontrol,
++ struct snd_ctl_elem_value *ucontrol)
++{
++ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
++ struct snd_soc_pcm_runtime *rtd;
++ struct glb_pool *glb_ptr = card->drvdata;
++ unsigned int left_val = (ucontrol->value.integer.value[0]);
++ unsigned int right_val = (ucontrol->value.integer.value[1]);
++ int ret = 0;
++
++ rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
++ if (glb_ptr->dual_mode == 1) {
++ ret = snd_soc_component_write(rtd->codec_dais[0]->component, PCM512x_MUTE,
++ ~((left_val & 0x01)<<4));
++ if (ret < 0)
++ return ret;
++ ret = snd_soc_component_write(rtd->codec_dais[1]->component, PCM512x_MUTE,
++ ~((right_val & 0x01)));
++ if (ret < 0)
++ return ret;
++
++ } else if (glb_ptr->set_mode == 1) {
++ ret = snd_soc_component_write(rtd->codec_dais[0]->component, PCM512x_MUTE,
++ ~((left_val & 0x01)<<4 | (right_val & 0x01)));
++ if (ret < 0)
++ return ret;
++
++ } else {
++ ret = snd_soc_component_write(rtd->codec_dais[0]->component, PCM512x_MUTE,
++ ~((left_val & 0x01)<<4 | (right_val & 0x01)));
++ if (ret < 0)
++ return ret;
++
++ ret = snd_soc_component_write(rtd->codec_dais[1]->component, PCM512x_MUTE,
++ ~((left_val & 0x01)<<4 | (right_val & 0x01)));
++ if (ret < 0)
++ return ret;
++ }
++ return 1;
++}
++
++static const DECLARE_TLV_DB_SCALE(digital_tlv_sub, -10350, 50, 1);
++static const DECLARE_TLV_DB_SCALE(digital_tlv_master, -10350, 50, 1);
++
++static const struct snd_kcontrol_new allo_piano_controls[] = {
++ SOC_ENUM_EXT("Subwoofer mode Route",
++ allo_piano_mode_enum,
++ snd_allo_piano_mode_get,
++ snd_allo_piano_mode_put),
++
++ SOC_ENUM_EXT("Dual Mode Route",
++ allo_piano_dual_mode_enum,
++ snd_allo_piano_dual_mode_get,
++ snd_allo_piano_dual_mode_put),
++
++ SOC_ENUM_EXT("Lowpass Route", allo_piano_enum,
++ snd_allo_piano_lowpass_get,
++ snd_allo_piano_lowpass_put),
++
++ SOC_DOUBLE_R_EXT_TLV("Subwoofer Playback Volume",
++ PCM512x_DIGITAL_VOLUME_2,
++ PCM512x_DIGITAL_VOLUME_3, 0, 255, 1,
++ pcm512x_get_reg_sub,
++ pcm512x_set_reg_sub,
++ digital_tlv_sub),
++
++ SOC_DOUBLE_EXT("Subwoofer Playback Switch",
++ PCM512x_MUTE,
++ PCM512x_RQML_SHIFT,
++ PCM512x_RQMR_SHIFT, 1, 1,
++ pcm512x_get_reg_sub_switch,
++ pcm512x_set_reg_sub_switch),
++
++ SOC_DOUBLE_R_EXT_TLV("Master Playback Volume",
++ PCM512x_DIGITAL_VOLUME_2,
++ PCM512x_DIGITAL_VOLUME_3, 0, 255, 1,
++ pcm512x_get_reg_master,
++ pcm512x_set_reg_master,
++ digital_tlv_master),
++
++ SOC_DOUBLE_EXT("Master Playback Switch",
++ PCM512x_MUTE,
++ PCM512x_RQML_SHIFT,
++ PCM512x_RQMR_SHIFT, 1, 1,
++ pcm512x_get_reg_master_switch,
++ pcm512x_set_reg_master_switch),
++};
++
++static int snd_allo_piano_dac_init(struct snd_soc_pcm_runtime *rtd)
++{
++ struct snd_soc_card *card = rtd->card;
++ struct glb_pool *glb_ptr;
++
++ glb_ptr = kmalloc(sizeof(struct glb_pool), GFP_KERNEL);
++ if (!glb_ptr)
++ return -ENOMEM;
++
++ memset(glb_ptr, 0x00, sizeof(glb_ptr));
++ card->drvdata = glb_ptr;
++ glb_ptr->dual_mode = 2;
++ glb_ptr->set_mode = 0;
++
++ mutex_init(&glb_ptr->lock);
++
++ if (digital_gain_0db_limit) {
++ int ret;
++
++ ret = snd_soc_limit_volume(card, "Digital Playback Volume",
++ 207);
++ if (ret < 0)
++ dev_warn(card->dev, "Failed to set volume limit: %d\n",
++ ret);
++ }
++ return 0;
++}
++
++static void snd_allo_piano_gpio_mute(struct snd_soc_card *card)
++{
++ if (mute_gpio[0])
++ gpiod_set_value_cansleep(mute_gpio[0], P_MUTE);
++
++ if (mute_gpio[1])
++ gpiod_set_value_cansleep(mute_gpio[1], P_MUTE);
++}
++
++static void snd_allo_piano_gpio_unmute(struct snd_soc_card *card)
++{
++ if (mute_gpio[0])
++ gpiod_set_value_cansleep(mute_gpio[0], P_UNMUTE);
++
++ if (mute_gpio[1])
++ gpiod_set_value_cansleep(mute_gpio[1], P_UNMUTE);
++}
++
++static int snd_allo_piano_set_bias_level(struct snd_soc_card *card,
++ struct snd_soc_dapm_context *dapm, enum snd_soc_bias_level level)
++{
++ struct snd_soc_pcm_runtime *rtd;
++ struct snd_soc_dai *codec_dai;
++
++ rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
++ codec_dai = rtd->codec_dai;
++
++ if (dapm->dev != codec_dai->dev)
++ return 0;
++
++ switch (level) {
++ case SND_SOC_BIAS_PREPARE:
++ if (dapm->bias_level != SND_SOC_BIAS_STANDBY)
++ break;
++ /* UNMUTE DAC */
++ snd_allo_piano_gpio_unmute(card);
++ break;
++
++ case SND_SOC_BIAS_STANDBY:
++ if (dapm->bias_level != SND_SOC_BIAS_PREPARE)
++ break;
++ /* MUTE DAC */
++ snd_allo_piano_gpio_mute(card);
++ break;
++
++ default:
++ break;
++ }
++
++ return 0;
++}
++
++static int snd_allo_piano_dac_startup(
++ struct snd_pcm_substream *substream)
++{
++ struct snd_soc_pcm_runtime *rtd = substream->private_data;
++ struct snd_soc_card *card = rtd->card;
++
++ snd_allo_piano_gpio_mute(card);
++
++ return 0;
++}
++
++static int snd_allo_piano_dac_hw_params(
++ struct snd_pcm_substream *substream,
++ struct snd_pcm_hw_params *params)
++{
++ struct snd_soc_pcm_runtime *rtd = substream->private_data;
++ unsigned int rate = params_rate(params);
++ struct snd_soc_card *card = rtd->card;
++ struct glb_pool *glb_ptr = card->drvdata;
++ int ret = 0, val = 0, dac;
++
++ for (dac = 0; (glb_mclk && dac < 2); dac++) {
++ /* Configure the PLL clock reference for both the Codecs */
++ ret = snd_soc_component_read(rtd->codec_dais[dac]->component,
++ PCM512x_RATE_DET_4, &val);
++ if (ret < 0) {
++ dev_err(rtd->codec_dais[dac]->component->dev,
++ "Failed to read register PCM512x_RATE_DET_4\n");
++ return ret;
++ }
++
++ if (val & 0x40) {
++ snd_soc_component_write(rtd->codec_dais[dac]->component,
++ PCM512x_PLL_REF,
++ PCM512x_SREF_BCK);
++
++ dev_info(rtd->codec_dais[dac]->component->dev,
++ "Setting BCLK as input clock & Enable PLL\n");
++ } else {
++ snd_soc_component_write(rtd->codec_dais[dac]->component,
++ PCM512x_PLL_EN,
++ 0x00);
++
++ snd_soc_component_write(rtd->codec_dais[dac]->component,
++ PCM512x_PLL_REF,
++ PCM512x_SREF_SCK);
++
++ dev_info(rtd->codec_dais[dac]->component->dev,
++ "Setting SCLK as input clock & disabled PLL\n");
++ }
++ }
++
++ ret = snd_allo_piano_dsp_program(rtd, glb_ptr->set_mode, rate,
++ glb_ptr->set_lowpass);
++ if (ret < 0)
++ return ret;
++
++ return ret;
++}
++
++static int snd_allo_piano_dac_prepare(
++ struct snd_pcm_substream *substream)
++{
++ struct snd_soc_pcm_runtime *rtd = substream->private_data;
++ struct snd_soc_card *card = rtd->card;
++
++ snd_allo_piano_gpio_unmute(card);
++
++ return 0;
++}
++
++/* machine stream operations */
++static struct snd_soc_ops snd_allo_piano_dac_ops = {
++ .startup = snd_allo_piano_dac_startup,
++ .hw_params = snd_allo_piano_dac_hw_params,
++ .prepare = snd_allo_piano_dac_prepare,
++};
++
++static struct snd_soc_dai_link_component allo_piano_2_1_codecs[] = {
++ {
++ .dai_name = "pcm512x-hifi",
++ },
++ {
++ .dai_name = "pcm512x-hifi",
++ },
++};
++
++static struct snd_soc_dai_link snd_allo_piano_dac_dai[] = {
++ {
++ .name = "PianoDACPlus",
++ .stream_name = "PianoDACPlus",
++ .cpu_dai_name = "bcm2708-i2s.0",
++ .platform_name = "bcm2708-i2s.0",
++ .codecs = allo_piano_2_1_codecs,
++ .num_codecs = 2,
++ .dai_fmt = SND_SOC_DAIFMT_I2S |
++ SND_SOC_DAIFMT_NB_NF |
++ SND_SOC_DAIFMT_CBS_CFS,
++ .ops = &snd_allo_piano_dac_ops,
++ .init = snd_allo_piano_dac_init,
++ },
++};
++
++/* audio machine driver */
++static struct snd_soc_card snd_allo_piano_dac = {
++ .name = "PianoDACPlus",
++ .owner = THIS_MODULE,
++ .dai_link = snd_allo_piano_dac_dai,
++ .num_links = ARRAY_SIZE(snd_allo_piano_dac_dai),
++ .controls = allo_piano_controls,
++ .num_controls = ARRAY_SIZE(allo_piano_controls),
++};
++
++static int snd_allo_piano_dac_probe(struct platform_device *pdev)
++{
++ struct snd_soc_card *card = &snd_allo_piano_dac;
++ int ret = 0, i = 0;
++
++ card->dev = &pdev->dev;
++ platform_set_drvdata(pdev, &snd_allo_piano_dac);
++
++ if (pdev->dev.of_node) {
++ struct device_node *i2s_node;
++ struct snd_soc_dai_link *dai;
++
++ dai = &snd_allo_piano_dac_dai[0];
++ i2s_node = of_parse_phandle(pdev->dev.of_node,
++ "i2s-controller", 0);
++ if (i2s_node) {
++ for (i = 0; i < card->num_links; i++) {
++ dai->cpu_dai_name = NULL;
++ dai->cpu_of_node = i2s_node;
++ dai->platform_name = NULL;
++ dai->platform_of_node = i2s_node;
++ }
++ }
++ digital_gain_0db_limit =
++ !of_property_read_bool(pdev->dev.of_node,
++ "allo,24db_digital_gain");
++
++ glb_mclk = of_property_read_bool(pdev->dev.of_node,
++ "allo,glb_mclk");
++
++ allo_piano_2_1_codecs[0].of_node =
++ of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
++ if (!allo_piano_2_1_codecs[0].of_node) {
++ dev_err(&pdev->dev,
++ "Property 'audio-codec' missing or invalid\n");
++ return -EINVAL;
++ }
++
++ allo_piano_2_1_codecs[1].of_node =
++ of_parse_phandle(pdev->dev.of_node, "audio-codec", 1);
++ if (!allo_piano_2_1_codecs[1].of_node) {
++ dev_err(&pdev->dev,
++ "Property 'audio-codec' missing or invalid\n");
++ return -EINVAL;
++ }
++
++ mute_gpio[0] = devm_gpiod_get_optional(&pdev->dev, "mute1",
++ GPIOD_OUT_LOW);
++ if (IS_ERR(mute_gpio[0])) {
++ ret = PTR_ERR(mute_gpio[0]);
++ dev_err(&pdev->dev,
++ "failed to get mute1 gpio6: %d\n", ret);
++ return ret;
++ }
++
++ mute_gpio[1] = devm_gpiod_get_optional(&pdev->dev, "mute2",
++ GPIOD_OUT_LOW);
++ if (IS_ERR(mute_gpio[1])) {
++ ret = PTR_ERR(mute_gpio[1]);
++ dev_err(&pdev->dev,
++ "failed to get mute2 gpio25: %d\n", ret);
++ return ret;
++ }
++
++ if (mute_gpio[0] && mute_gpio[1])
++ snd_allo_piano_dac.set_bias_level =
++ snd_allo_piano_set_bias_level;
++
++ ret = snd_soc_register_card(&snd_allo_piano_dac);
++ if (ret < 0) {
++ dev_err(&pdev->dev,
++ "snd_soc_register_card() failed: %d\n", ret);
++ return ret;
++ }
++
++ if ((mute_gpio[0]) && (mute_gpio[1]))
++ snd_allo_piano_gpio_mute(&snd_allo_piano_dac);
++
++ return 0;
++ }
++
++ return -EINVAL;
++}
++
++static int snd_allo_piano_dac_remove(struct platform_device *pdev)
++{
++ struct snd_soc_card *card = platform_get_drvdata(pdev);
++
++ kfree(&card->drvdata);
++ snd_allo_piano_gpio_mute(&snd_allo_piano_dac);
++ return snd_soc_unregister_card(&snd_allo_piano_dac);
++}
++
++static const struct of_device_id snd_allo_piano_dac_of_match[] = {
++ { .compatible = "allo,piano-dac-plus", },
++ { /* sentinel */ },
++};
++
++MODULE_DEVICE_TABLE(of, snd_allo_piano_dac_of_match);
++
++static struct platform_driver snd_allo_piano_dac_driver = {
++ .driver = {
++ .name = "snd-allo-piano-dac-plus",
++ .owner = THIS_MODULE,
++ .of_match_table = snd_allo_piano_dac_of_match,
++ },
++ .probe = snd_allo_piano_dac_probe,
++ .remove = snd_allo_piano_dac_remove,
++};
++
++module_platform_driver(snd_allo_piano_dac_driver);
++
++MODULE_AUTHOR("Baswaraj K <jaikumar@cem-solutions.net>");
++MODULE_DESCRIPTION("ALSA ASoC Machine Driver for Allo Piano DAC Plus");
++MODULE_LICENSE("GPL v2");
projects / openwrt / openwrt.git / blobdiff