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openwrt/target/linux/bcm27xx/patches-5.4/950-1020-Update-Allo-Piano-Dac-Driver-for-5.4.y-kernels.patch
Álvaro Fernández Rojas f07e572f64 bcm27xx: import latest patches from the RPi foundation 
bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2021-02-18 23:42:32 +01:00

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From 7f7ea09cdfa44c447c31db4884c1bb958d27f10a Mon Sep 17 00:00:00 2001
From: paul-1 <6473457+paul-1@users.noreply.github.com>
Date: Wed, 4 Nov 2020 19:11:37 -0500
Subject: [PATCH] Update Allo Piano Dac Driver for 5.4.y kernels
Add unique names to the individual dac coded drivers
Remove some of the codec controls that are not used.
Signed-off-by: Paul Hermann <paul@picoreplayer.org>
---
sound/soc/bcm/allo-piano-dac-plus.c | 129 +++++++++++++++++++++-------
1 file changed, 97 insertions(+), 32 deletions(-)
--- a/sound/soc/bcm/allo-piano-dac-plus.c
+++ b/sound/soc/bcm/allo-piano-dac-plus.c
@@ -2,7 +2,8 @@
* ALSA ASoC Machine Driver for Allo Piano DAC Plus Subwoofer
*
* Author: Baswaraj K <jaikumar@cem-solutions.net>
- * Copyright 2016
+ * Copyright 2020
+ * based on code by David Knell <david.knell@gmail.com)
* based on code by Daniel Matuschek <info@crazy-audio.com>
* based on code by Florian Meier <florian.meier@koalo.de>
*
@@ -276,8 +277,15 @@ static int snd_allo_piano_dual_mode_put(
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))) {
+ if (!strncmp(kctl->id.name, "Main Digital Playback Volume",
+ sizeof(kctl->id.name))) {
+ mc = (struct soc_mixer_control *)
+ kctl->private_value;
+ mc->rreg = mc->reg;
+ break;
+ }
+ if (!strncmp(kctl->id.name, "Sub Digital Playback Volume",
+ sizeof(kctl->id.name))) {
mc = (struct soc_mixer_control *)
kctl->private_value;
mc->rreg = mc->reg;
@@ -291,13 +299,20 @@ static int snd_allo_piano_dual_mode_put(
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))) {
+ if (!strncmp(kctl->id.name, "Main Digital Playback Volume",
+ sizeof(kctl->id.name))) {
mc = (struct soc_mixer_control *)
kctl->private_value;
mc->rreg = PCM512x_DIGITAL_VOLUME_3;
break;
}
+ if (!strncmp(kctl->id.name, "Sub Digital Playback Volume",
+ sizeof(kctl->id.name))) {
+ mc = (struct soc_mixer_control *)
+ kctl->private_value;
+ mc->rreg = PCM512x_DIGITAL_VOLUME_2;
+ break;
+ }
}
snd_soc_component_write(rtd->codec_dais[0]->component,
@@ -344,13 +359,20 @@ static int snd_allo_piano_mode_put(struc
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))) {
+ if (!strncmp(kctl->id.name, "Main Digital Playback Volume",
+ sizeof(kctl->id.name))) {
mc = (struct soc_mixer_control *)
kctl->private_value;
mc->rreg = PCM512x_DIGITAL_VOLUME_3;
break;
}
+ if (!strncmp(kctl->id.name, "Sub Digital Playback Volume",
+ sizeof(kctl->id.name))) {
+ mc = (struct soc_mixer_control *)
+ kctl->private_value;
+ mc->rreg = PCM512x_DIGITAL_VOLUME_2;
+ break;
+ }
}
snd_soc_component_write(rtd->codec_dais[0]->component,
PCM512x_DIGITAL_VOLUME_3, left_val);
@@ -434,12 +456,6 @@ static int pcm512x_set_reg_sub(struct sn
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",
@@ -449,6 +465,13 @@ static int pcm512x_set_reg_sub(struct sn
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[1]->component,
PCM512x_DIGITAL_VOLUME_3, (~right_val));
if (ret < 0)
@@ -674,7 +697,7 @@ static const struct snd_kcontrol_new all
SOC_DOUBLE_R_EXT_TLV("Subwoofer Playback Volume",
PCM512x_DIGITAL_VOLUME_2,
- PCM512x_DIGITAL_VOLUME_3, 0, 255, 1,
+ PCM512x_DIGITAL_VOLUME_3, 0, 207, 1,
pcm512x_get_reg_sub,
pcm512x_set_reg_sub,
digital_tlv_sub),
@@ -688,7 +711,7 @@ static const struct snd_kcontrol_new all
SOC_DOUBLE_R_EXT_TLV("Master Playback Volume",
PCM512x_DIGITAL_VOLUME_2,
- PCM512x_DIGITAL_VOLUME_3, 0, 255, 1,
+ PCM512x_DIGITAL_VOLUME_3, 0, 207, 1,
pcm512x_get_reg_master,
pcm512x_set_reg_master,
digital_tlv_master),
@@ -701,10 +724,28 @@ static const struct snd_kcontrol_new all
pcm512x_set_reg_master_switch),
};
+static const char * const codec_ctl_pfx[] = { "Main", "Sub" };
+static const char * const codec_ctl_name[] = {
+ "Digital Playback Volume",
+ "Digital Playback Switch",
+ "Auto Mute Mono Switch",
+ "Auto Mute Switch",
+ "Auto Mute Time Left",
+ "Auto Mute Time Right",
+ "Clock Missing Period",
+ "Max Overclock DAC",
+ "Max Overclock DSP",
+ "Max Overclock PLL",
+ "Volume Ramp Down Emergency Rate",
+ "Volume Ramp Down Emergency Step"
+};
+
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;
+ struct snd_kcontrol *kctl;
+ int i, j;
glb_ptr = kzalloc(sizeof(struct glb_pool), GFP_KERNEL);
if (!glb_ptr)
@@ -719,12 +760,37 @@ static int snd_allo_piano_dac_init(struc
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);
+ //Set volume limit on both dacs
+ for (i = 0; i < ARRAY_SIZE(codec_ctl_pfx); i++) {
+ char cname[256];
+
+ sprintf(cname, "%s %s", codec_ctl_pfx[i], codec_ctl_name[0]);
+ ret = snd_soc_limit_volume(card, cname, 207);
+ if (ret < 0)
+ dev_warn(card->dev, "Failed to set volume limit: %d\n",
+ ret);
+ }
+ }
+
+ // Remove codec controls
+ for (i = 0; i < ARRAY_SIZE(codec_ctl_pfx); i++) {
+ // Start at 1, leave the Digital Volume control.
+ for (j = 1; j < ARRAY_SIZE(codec_ctl_name); j++) {
+ char cname[256];
+
+ sprintf(cname, "%s %s", codec_ctl_pfx[i], codec_ctl_name[j]);
+ kctl = snd_soc_card_get_kcontrol(card, cname);
+ if (!kctl) {
+ dev_err(rtd->card->dev, "Control %s not found\n",
+ cname);
+ } else {
+ kctl->vd[0].access =
+ SNDRV_CTL_ELEM_ACCESS_READWRITE;
+ snd_ctl_remove(card->snd_card, kctl);
+ }
+ }
}
+
return 0;
}
@@ -868,10 +934,10 @@ static struct snd_soc_dai_link_component
};
SND_SOC_DAILINK_DEFS(allo_piano_dai_plus,
- DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
- DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "pcm512x-hifi"),
- COMP_CODEC(NULL, "pcm512x-hifi")),
- DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
+ DAILINK_COMP_ARRAY(COMP_EMPTY()),
+ DAILINK_COMP_ARRAY(COMP_CODEC("pcm512x.1-004c", "pcm512x-hifi"),
+ COMP_CODEC("pcm512x.1-004d", "pcm512x-hifi")),
+ DAILINK_COMP_ARRAY(COMP_EMPTY()));
static struct snd_soc_dai_link snd_allo_piano_dac_dai[] = {
{
@@ -964,17 +1030,16 @@ static int snd_allo_piano_dac_probe(stru
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;
+ ret = devm_snd_soc_register_card(&pdev->dev, &snd_allo_piano_dac);
+
+ if (ret && ret != -EPROBE_DEFER)
+ dev_err(&pdev->dev,
+ "snd_soc_register_card() failed: %d\n", ret);
+ return ret;
+
}
return -EINVAL;
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