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freifunkist-firmware/target/linux/brcm2708/patches-4.14/950-0080-Add-support-for-Al...

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From 649b1181f032801c12e17196618c032cdb3cb587 Mon Sep 17 00:00:00 2001
From: Raashid Muhammed <raashidmuhammed@zilogic.com>
Date: Mon, 27 Mar 2017 12:35:00 +0530
Subject: [PATCH 080/454] 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>
---
sound/soc/bcm/Kconfig | 7 +
sound/soc/bcm/Makefile | 2 +
sound/soc/bcm/allo-piano-dac-plus.c | 1014 +++++++++++++++++++++++++++
3 files changed, 1023 insertions(+)
create mode 100644 sound/soc/bcm/allo-piano-dac-plus.c
--- a/sound/soc/bcm/Kconfig
+++ b/sound/soc/bcm/Kconfig
@@ -131,3 +131,10 @@ config SND_BCM2708_SOC_ALLO_PIANO_DAC
select SND_SOC_PCM512x_I2C
help
Say Y or M if you want to add support for Allo Piano DAC.
+
+config SND_BCM2708_SOC_ALLO_PIANO_DAC_PLUS
+ tristate "Support for Allo Piano DAC Plus"
+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+ select SND_SOC_PCM512x_I2C
+ help
+ Say Y or M if you want to add support for Allo Piano DAC Plus.
--- a/sound/soc/bcm/Makefile
+++ b/sound/soc/bcm/Makefile
@@ -25,6 +25,7 @@ snd-soc-audioinjector-pi-soundcard-objs
snd-soc-digidac1-soundcard-objs := digidac1-soundcard.o
snd-soc-dionaudio-loco-objs := dionaudio_loco.o
snd-soc-allo-piano-dac-objs := allo-piano-dac.o
+snd-soc-allo-piano-dac-plus-objs := allo-piano-dac-plus.o
obj-$(CONFIG_SND_BCM2708_SOC_ADAU1977_ADC) += snd-soc-adau1977-adc.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP) += snd-soc-hifiberry-amp.o
@@ -42,3 +43,4 @@ obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDC
obj-$(CONFIG_SND_DIGIDAC1_SOUNDCARD) += snd-soc-digidac1-soundcard.o
obj-$(CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO) += snd-soc-dionaudio-loco.o
obj-$(CONFIG_SND_BCM2708_SOC_ALLO_PIANO_DAC) += snd-soc-allo-piano-dac.o
+obj-$(CONFIG_SND_BCM2708_SOC_ALLO_PIANO_DAC_PLUS) += snd-soc-allo-piano-dac-plus.o
--- /dev/null
+++ b/sound/soc/bcm/allo-piano-dac-plus.c
@@ -0,0 +1,1014 @@
+/*
+ * 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_write(rtd->codec_dais[0]->codec,
+ PCM512x_MUTE, P_DAC_UNMUTE);
+ snd_soc_write(rtd->codec_dais[1]->codec,
+ 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_write(rtd->codec_dais[0]->codec,
+ PCM512x_MUTE, P_DAC_UNMUTE);
+ snd_soc_write(rtd->codec_dais[1]->codec,
+ PCM512x_MUTE, P_DAC_UNMUTE);
+ }
+
+ for (dac = 0; dac < rtd->num_codecs; dac++) {
+ struct dsp_code *dsp_code_read;
+ struct snd_soc_codec *codec = rtd->codec_dais[dac]->codec;
+ 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(codec->dev, "Dsp Firmware File Name: %s\n",
+ firmware_name);
+
+ ret = request_firmware(&fw, firmware_name, codec->dev);
+ if (ret < 0) {
+ dev_err(codec->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_write(rtd->codec_dais[dac]->codec,
+ PCM512x_PAGE_BASE(0),
+ dsp_code_read->val);
+
+ } else if (dsp_code_read->offset != 0) {
+ ret = snd_soc_write(rtd->codec_dais[dac]->codec,
+ (PCM512x_PAGE_BASE(
+ glb_ptr->dsp_page_number) +
+ dsp_code_read->offset),
+ dsp_code_read->val);
+ }
+ if (ret < 0) {
+ dev_err(codec->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_write(rtd->codec_dais[0]->codec,
+ PCM512x_MUTE, P_DAC_RIGHT_MUTE);
+ snd_soc_write(rtd->codec_dais[1]->codec,
+ PCM512x_MUTE, P_DAC_LEFT_MUTE);
+ snd_soc_write(rtd->codec_dais[0]->codec,
+ PCM512x_DIGITAL_VOLUME_3, 0xff);
+ snd_soc_write(rtd->codec_dais[1]->codec,
+ 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 {
+ left_val = snd_soc_read(rtd->codec_dais[0]->codec,
+ PCM512x_DIGITAL_VOLUME_2);
+ right_val = snd_soc_read(rtd->codec_dais[1]->codec,
+ PCM512x_DIGITAL_VOLUME_3);
+
+ 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_write(rtd->codec_dais[0]->codec,
+ PCM512x_DIGITAL_VOLUME_3, left_val);
+ snd_soc_write(rtd->codec_dais[1]->codec,
+ PCM512x_DIGITAL_VOLUME_2, right_val);
+ snd_soc_write(rtd->codec_dais[0]->codec,
+ PCM512x_MUTE, P_DAC_UNMUTE);
+ snd_soc_write(rtd->codec_dais[1]->codec,
+ 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)) {
+ left_val = snd_soc_read(rtd->codec_dais[0]->codec,
+ PCM512x_DIGITAL_VOLUME_2);
+ right_val = snd_soc_read(rtd->codec_dais[1]->codec,
+ PCM512x_DIGITAL_VOLUME_2);
+
+ 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_write(rtd->codec_dais[0]->codec,
+ PCM512x_DIGITAL_VOLUME_3, left_val);
+ snd_soc_write(rtd->codec_dais[1]->codec,
+ 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;
+
+ rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
+ right_val = snd_soc_read(rtd->codec_dais[1]->codec,
+ PCM512x_DIGITAL_VOLUME_3);
+ if (right_val < 0)
+ return right_val;
+
+ if (glb_ptr->dual_mode != 1) {
+ left_val = snd_soc_read(rtd->codec_dais[1]->codec,
+ PCM512x_DIGITAL_VOLUME_2);
+ if (left_val < 0)
+ return left_val;
+
+ } 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_write(rtd->codec_dais[1]->codec,
+ 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_write(rtd->codec_dais[1]->codec,
+ 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;
+
+ rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
+ val = snd_soc_read(rtd->codec_dais[1]->codec, PCM512x_MUTE);
+ if (val < 0)
+ return val;
+
+ 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_write(rtd->codec_dais[1]->codec, 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;
+
+ rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
+
+ left_val = snd_soc_read(rtd->codec_dais[0]->codec,
+ PCM512x_DIGITAL_VOLUME_2);
+ if (left_val < 0)
+ return left_val;
+
+ if (glb_ptr->dual_mode == 1) {
+ right_val = snd_soc_read(rtd->codec_dais[1]->codec,
+ PCM512x_DIGITAL_VOLUME_3);
+ if (right_val < 0)
+ return right_val;
+ } else {
+ right_val = snd_soc_read(rtd->codec_dais[0]->codec,
+ PCM512x_DIGITAL_VOLUME_3);
+ if (right_val < 0)
+ return 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_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_write(rtd->codec_dais[1]->codec,
+ PCM512x_DIGITAL_VOLUME_2, (~left_val));
+ if (ret < 0)
+ return ret;
+
+ ret = snd_soc_write(rtd->codec_dais[0]->codec,
+ PCM512x_DIGITAL_VOLUME_3, (~right_val));
+ if (ret < 0)
+ return ret;
+
+ }
+
+ ret = snd_soc_write(rtd->codec_dais[1]->codec,
+ PCM512x_DIGITAL_VOLUME_3, (~right_val));
+ if (ret < 0)
+ return ret;
+
+ ret = snd_soc_write(rtd->codec_dais[0]->codec,
+ 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;
+
+ rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
+
+ val = snd_soc_read(rtd->codec_dais[0]->codec, PCM512x_MUTE);
+ if (val < 0)
+ return val;
+
+ ucontrol->value.integer.value[0] =
+ (val & P_DAC_LEFT_MUTE) ? P_UNMUTE : P_MUTE;
+
+ if (glb_ptr->dual_mode == 1) {
+ val = snd_soc_read(rtd->codec_dais[1]->codec, PCM512x_MUTE);
+ if (val < 0)
+ return val;
+ }
+ 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_write(rtd->codec_dais[0]->codec, PCM512x_MUTE,
+ ~((left_val & 0x01)<<4));
+ if (ret < 0)
+ return ret;
+ ret = snd_soc_write(rtd->codec_dais[1]->codec, PCM512x_MUTE,
+ ~((right_val & 0x01)));
+ if (ret < 0)
+ return ret;
+
+ } else if (glb_ptr->set_mode == 1) {
+ ret = snd_soc_write(rtd->codec_dais[0]->codec, PCM512x_MUTE,
+ ~((left_val & 0x01)<<4 | (right_val & 0x01)));
+ if (ret < 0)
+ return ret;
+
+ } else {
+ ret = snd_soc_write(rtd->codec_dais[0]->codec, PCM512x_MUTE,
+ ~((left_val & 0x01)<<4 | (right_val & 0x01)));
+ if (ret < 0)
+ return ret;
+
+ ret = snd_soc_write(rtd->codec_dais[1]->codec, 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;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+ unsigned int sample_bits =
+ snd_pcm_format_physical_width(params_format(params));
+ 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 */
+ val = snd_soc_read(rtd->codec_dais[dac]->codec,
+ PCM512x_RATE_DET_4);
+ if (val < 0) {
+ dev_err(rtd->codec_dais[dac]->codec->dev,
+ "Failed to read register PCM512x_RATE_DET_4\n");
+ return val;
+ }
+
+ if (val & 0x40) {
+ snd_soc_write(rtd->codec_dais[dac]->codec,
+ PCM512x_PLL_REF,
+ PCM512x_SREF_BCK);
+
+ dev_info(rtd->codec_dais[dac]->codec->dev,
+ "Setting BCLK as input clock & Enable PLL\n");
+ } else {
+ snd_soc_write(rtd->codec_dais[dac]->codec,
+ PCM512x_PLL_EN,
+ 0x00);
+
+ snd_soc_write(rtd->codec_dais[dac]->codec,
+ PCM512x_PLL_REF,
+ PCM512x_SREF_SCK);
+
+ dev_info(rtd->codec_dais[dac]->codec->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;
+
+ ret = snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
+
+ 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");