mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-22 06:57:57 +00:00
20fe7e687e
Sync 6.1 patches with the RPi foundation. Since rpi-6.6.y is now the main branch of the RPi foundation, there won't be any new patches for linux 6.1. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
115 lines
3.7 KiB
Diff
115 lines
3.7 KiB
Diff
From d58c054ba30b313bacbb7d19f559ecb4e3bb5c76 Mon Sep 17 00:00:00 2001
|
|
From: Joerg Schambacher <joerg@hifiberry.com>
|
|
Date: Fri, 19 Jan 2024 10:58:39 +0100
|
|
Subject: [PATCH 1266/1295] ASoC: adds support for AMP4 Pro to the DAC Plus
|
|
driver
|
|
|
|
The AMP4 Pro is a I2S master mode capable amplifier with
|
|
clean onboard clock generators.
|
|
We can share the card driver between TAS575x amplifiers
|
|
and the PCM512x DACs as they are SW compatible.
|
|
From a HW perspective though we need to limit the sample
|
|
rates to the standard audio rates to avoid running the
|
|
onboard clocks through the PLL. Using the PLL would require
|
|
even a different HW.
|
|
DAI/stream name are also set accordingly to allow the user
|
|
a convenient identification of the soundcard
|
|
|
|
Needs the pcm512x driver with TAS575x support (already in
|
|
upstream kernel).
|
|
|
|
Signed-off-by: Joerg Schambacher <joerg@hifiberry.com>
|
|
---
|
|
sound/soc/bcm/hifiberry_dacplus.c | 41 ++++++++++++++++++++++++++++---
|
|
1 file changed, 38 insertions(+), 3 deletions(-)
|
|
|
|
--- a/sound/soc/bcm/hifiberry_dacplus.c
|
|
+++ b/sound/soc/bcm/hifiberry_dacplus.c
|
|
@@ -58,10 +58,21 @@ static bool leds_off;
|
|
static bool auto_mute;
|
|
static int mute_ext_ctl;
|
|
static int mute_ext;
|
|
+static bool tas_device;
|
|
static struct gpio_desc *snd_mute_gpio;
|
|
static struct gpio_desc *snd_reset_gpio;
|
|
static struct snd_soc_card snd_rpi_hifiberry_dacplus;
|
|
|
|
+static const u32 master_dai_rates[] = {
|
|
+ 44100, 48000, 88200, 96000,
|
|
+ 176400, 192000, 352800, 384000,
|
|
+};
|
|
+
|
|
+static const struct snd_pcm_hw_constraint_list constraints_master = {
|
|
+ .count = ARRAY_SIZE(master_dai_rates),
|
|
+ .list = master_dai_rates,
|
|
+};
|
|
+
|
|
static int snd_rpi_hifiberry_dacplus_mute_set(int mute)
|
|
{
|
|
gpiod_set_value_cansleep(snd_mute_gpio, mute);
|
|
@@ -197,8 +208,13 @@ static int snd_rpi_hifiberry_dacplus_ini
|
|
if (snd_rpi_hifiberry_is_dacpro) {
|
|
struct snd_soc_dai_link *dai = rtd->dai_link;
|
|
|
|
- dai->name = "HiFiBerry DAC+ Pro";
|
|
- dai->stream_name = "HiFiBerry DAC+ Pro HiFi";
|
|
+ if (tas_device) {
|
|
+ dai->name = "HiFiBerry AMP4 Pro";
|
|
+ dai->stream_name = "HiFiBerry AMP4 Pro HiFi";
|
|
+ } else {
|
|
+ dai->name = "HiFiBerry DAC+ Pro";
|
|
+ dai->stream_name = "HiFiBerry DAC+ Pro HiFi";
|
|
+ }
|
|
dai->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
|
|
| SND_SOC_DAIFMT_CBM_CFM;
|
|
|
|
@@ -303,6 +319,18 @@ static int snd_rpi_hifiberry_dacplus_sta
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = substream->private_data;
|
|
struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
|
|
+ int ret;
|
|
+
|
|
+ if (tas_device && !slave) {
|
|
+ ret = snd_pcm_hw_constraint_list(substream->runtime, 0,
|
|
+ SNDRV_PCM_HW_PARAM_RATE,
|
|
+ &constraints_master);
|
|
+ if (ret < 0) {
|
|
+ dev_err(rtd->card->dev,
|
|
+ "Cannot apply constraints for sample rates\n");
|
|
+ return ret;
|
|
+ }
|
|
+ }
|
|
|
|
if (auto_mute)
|
|
gpiod_set_value_cansleep(snd_mute_gpio, 0);
|
|
@@ -324,7 +352,7 @@ static void snd_rpi_hifiberry_dacplus_sh
|
|
}
|
|
|
|
/* machine stream operations */
|
|
-static struct snd_soc_ops snd_rpi_hifiberry_dacplus_ops = {
|
|
+static const struct snd_soc_ops snd_rpi_hifiberry_dacplus_ops = {
|
|
.hw_params = snd_rpi_hifiberry_dacplus_hw_params,
|
|
.startup = snd_rpi_hifiberry_dacplus_startup,
|
|
.shutdown = snd_rpi_hifiberry_dacplus_shutdown,
|
|
@@ -394,6 +422,7 @@ static int snd_rpi_hifiberry_dacplus_pro
|
|
struct snd_soc_card *card = &snd_rpi_hifiberry_dacplus;
|
|
int len;
|
|
struct device_node *tpa_node;
|
|
+ struct device_node *tas_node;
|
|
struct property *tpa_prop;
|
|
struct of_changeset ocs;
|
|
struct property *pp;
|
|
@@ -430,6 +459,12 @@ static int snd_rpi_hifiberry_dacplus_pro
|
|
}
|
|
}
|
|
|
|
+ tas_node = of_find_compatible_node(NULL, NULL, "ti,tas5756");
|
|
+ if (tas_node) {
|
|
+ tas_device = true;
|
|
+ dev_info(&pdev->dev, "TAS5756 device found!\n");
|
|
+ };
|
|
+
|
|
snd_rpi_hifiberry_dacplus.dev = &pdev->dev;
|
|
if (pdev->dev.of_node) {
|
|
struct device_node *i2s_node;
|