+++ /dev/null
-From 0fa0f5932fff8c960862176fd61a7bccd2f28b90 Mon Sep 17 00:00:00 2001
-From: David Knell <david.knell@gmail.com>
-Date: Wed, 28 Oct 2020 14:21:37 +0000
-Subject: [PATCH] PiFi-40 driver, Makefile and Kconfig
-
-Signed-off-by: David Knell <david.knell@gmail.com>
----
- sound/soc/bcm/Kconfig | 8 ++
- sound/soc/bcm/Makefile | 3 +
- sound/soc/bcm/pifi-40.c | 283 ++++++++++++++++++++++++++++++++++++++++
- 3 files changed, 294 insertions(+)
- create mode 100644 sound/soc/bcm/pifi-40.c
-
---- a/sound/soc/bcm/Kconfig
-+++ b/sound/soc/bcm/Kconfig
-@@ -100,6 +100,14 @@ config SND_BCM2708_SOC_HIFIBERRY_AMP
- help
- Say Y or M if you want to add support for the HifiBerry Amp amplifier board.
-
-+ config SND_BCM2708_SOC_PIFI_40
-+ tristate "Support for the PiFi-40 amp"
-+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
-+ select SND_SOC_TAS571X
-+ select SND_PIFI_40
-+ help
-+ Say Y or M if you want to add support for the PiFi40 amp board
-+
- config SND_BCM2708_SOC_RPI_CIRRUS
- tristate "Support for Cirrus Logic Audio Card"
- depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
---- a/sound/soc/bcm/Makefile
-+++ b/sound/soc/bcm/Makefile
-@@ -45,6 +45,7 @@ snd-soc-pisound-objs := pisound.o
- snd-soc-fe-pi-audio-objs := fe-pi-audio.o
- snd-soc-rpi-simple-soundcard-objs := rpi-simple-soundcard.o
- snd-soc-rpi-wm8804-soundcard-objs := rpi-wm8804-soundcard.o
-+snd-soc-pifi-40-objs := pifi-40.o
-
- obj-$(CONFIG_SND_BCM2708_SOC_GOOGLEVOICEHAT_SOUNDCARD) += snd-soc-googlevoicehat-codec.o
- obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
-@@ -74,3 +75,5 @@ obj-$(CONFIG_SND_PISOUND) += snd-soc-pis
- obj-$(CONFIG_SND_BCM2708_SOC_FE_PI_AUDIO) += snd-soc-fe-pi-audio.o
- obj-$(CONFIG_SND_RPI_SIMPLE_SOUNDCARD) += snd-soc-rpi-simple-soundcard.o
- obj-$(CONFIG_SND_RPI_WM8804_SOUNDCARD) += snd-soc-rpi-wm8804-soundcard.o
-+obj-$(CONFIG_SND_BCM2708_SOC_PIFI_40) += snd-soc-pifi-40.o
-+
---- /dev/null
-+++ b/sound/soc/bcm/pifi-40.c
-@@ -0,0 +1,283 @@
-+// SPDX-License-Identifier: GPL-2.0-only
-+/*
-+ * ALSA ASoC Machine Driver for PiFi-40
-+ *
-+ * Author: 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>
-+ * Copyright (C) 2020
-+ *
-+ * 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>
-+
-+static struct gpio_desc *pdn_gpio;
-+static int vol = 0x30;
-+
-+// Volume control
-+static int pifi_40_vol_get(struct snd_kcontrol *kcontrol,
-+ struct snd_ctl_elem_value *ucontrol)
-+{
-+ ucontrol->value.integer.value[0] = vol;
-+ ucontrol->value.integer.value[1] = vol;
-+ return 0;
-+}
-+
-+static int pifi_40_vol_set(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;
-+ unsigned int v = ucontrol->value.integer.value[0];
-+ struct snd_soc_component *dac[2];
-+
-+ rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
-+ dac[0] = asoc_rtd_to_codec(rtd, 0)->component;
-+ dac[1] = asoc_rtd_to_codec(rtd, 1)->component;
-+
-+ snd_soc_component_write(dac[0], 0x07, 255 - v);
-+ snd_soc_component_write(dac[1], 0x07, 255 - v);
-+
-+ vol = v;
-+ return 1;
-+}
-+
-+static const DECLARE_TLV_DB_SCALE(digital_tlv_master, -10350, 50, 1);
-+static const struct snd_kcontrol_new pifi_40_controls[] = {
-+ SOC_DOUBLE_R_EXT_TLV("Master Volume", 0x00, 0x01,
-+ 0x00, // Min
-+ 0xff, // Max
-+ 0x01, // Invert
-+ pifi_40_vol_get, pifi_40_vol_set,
-+ digital_tlv_master)
-+};
-+
-+static const char * const codec_ctl_pfx[] = { "Left", "Right" };
-+
-+static const char * const codec_ctl_name[] = { "Master Volume",
-+ "Speaker Volume",
-+ "Speaker Switch" };
-+
-+static int snd_pifi_40_init(struct snd_soc_pcm_runtime *rtd)
-+{
-+ struct snd_soc_card *card = rtd->card;
-+ struct snd_soc_component *dac[2];
-+ struct snd_kcontrol *kctl;
-+ int i, j;
-+
-+ dac[0] = asoc_rtd_to_codec(rtd, 0)->component;
-+ dac[1] = asoc_rtd_to_codec(rtd, 1)->component;
-+
-+
-+ // Set up cards - pulse power down first
-+ gpiod_set_value_cansleep(pdn_gpio, 1);
-+ usleep_range(1000, 10000);
-+ gpiod_set_value_cansleep(pdn_gpio, 0);
-+ usleep_range(20000, 30000);
-+
-+ // Oscillator trim
-+ snd_soc_component_write(dac[0], 0x1b, 0);
-+ snd_soc_component_write(dac[1], 0x1b, 0);
-+ usleep_range(60000, 80000);
-+
-+ // Common setup
-+ for (i = 0; i < 2; i++) {
-+ // MCLK at 64fs, sample rate 44.1 or 48kHz
-+ snd_soc_component_write(dac[i], 0x00, 0x60);
-+
-+ // Set up for PBTL
-+ snd_soc_component_write(dac[i], 0x19, 0x3A);
-+ snd_soc_component_write(dac[i], 0x25, 0x01103245);
-+
-+ // Master vol to -10db
-+ snd_soc_component_write(dac[i], 0x07, 0x44);
-+ }
-+ // Inputs set to L and R respectively
-+ snd_soc_component_write(dac[0], 0x20, 0x00017772);
-+ snd_soc_component_write(dac[1], 0x20, 0x00107772);
-+
-+ // Remove codec controls
-+ for (i = 0; i < 2; i++) {
-+ for (j = 0; j < 3; 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) {
-+ pr_info("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;
-+}
-+
-+static int snd_pifi_40_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 = asoc_rtd_to_cpu(rtd, 0);
-+ unsigned int sample_bits;
-+
-+ sample_bits = snd_pcm_format_physical_width(params_format(params));
-+ return snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
-+}
-+
-+static struct snd_soc_ops snd_pifi_40_ops = { .hw_params =
-+ snd_pifi_40_hw_params };
-+
-+static struct snd_soc_dai_link_component pifi_40_codecs[] = {
-+ {
-+ .dai_name = "tas571x-hifi",
-+ },
-+ {
-+ .dai_name = "tas571x-hifi",
-+ },
-+};
-+
-+SND_SOC_DAILINK_DEFS(
-+ pifi_40_dai, DAILINK_COMP_ARRAY(COMP_EMPTY()),
-+ DAILINK_COMP_ARRAY(COMP_CODEC("tas571x.1-001a", "tas571x-hifi"),
-+ COMP_CODEC("tas571x.1-001b", "tas571x-hifi")),
-+ DAILINK_COMP_ARRAY(COMP_EMPTY()));
-+
-+static struct snd_soc_dai_link snd_pifi_40_dai[] = {
-+ {
-+ .name = "PiFi40",
-+ .stream_name = "PiFi40",
-+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
-+ SND_SOC_DAIFMT_CBS_CFS,
-+ .ops = &snd_pifi_40_ops,
-+ .init = snd_pifi_40_init,
-+ SND_SOC_DAILINK_REG(pifi_40_dai),
-+ },
-+};
-+
-+// Machine driver
-+static struct snd_soc_card snd_pifi_40 = {
-+ .name = "PiFi40",
-+ .owner = THIS_MODULE,
-+ .dai_link = snd_pifi_40_dai,
-+ .num_links = ARRAY_SIZE(snd_pifi_40_dai),
-+ .controls = pifi_40_controls,
-+ .num_controls = ARRAY_SIZE(pifi_40_controls)
-+};
-+
-+static void snd_pifi_40_pdn(struct snd_soc_card *card, int on)
-+{
-+ if (pdn_gpio)
-+ gpiod_set_value_cansleep(pdn_gpio, on ? 0 : 1);
-+}
-+
-+static int snd_pifi_40_probe(struct platform_device *pdev)
-+{
-+ struct snd_soc_card *card = &snd_pifi_40;
-+ int ret = 0, i = 0;
-+
-+ card->dev = &pdev->dev;
-+ platform_set_drvdata(pdev, &snd_pifi_40);
-+
-+ if (pdev->dev.of_node) {
-+ struct device_node *i2s_node;
-+ struct snd_soc_dai_link *dai;
-+
-+ dai = &snd_pifi_40_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->cpus->dai_name = NULL;
-+ dai->cpus->of_node = i2s_node;
-+ dai->platforms->name = NULL;
-+ dai->platforms->of_node = i2s_node;
-+ }
-+ }
-+
-+ pifi_40_codecs[0].of_node =
-+ of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
-+ pifi_40_codecs[1].of_node =
-+ of_parse_phandle(pdev->dev.of_node, "audio-codec", 1);
-+ if (!pifi_40_codecs[0].of_node || !pifi_40_codecs[1].of_node) {
-+ dev_err(&pdev->dev,
-+ "Property 'audio-codec' missing or invalid\n");
-+ return -EINVAL;
-+ }
-+
-+ pdn_gpio = devm_gpiod_get_optional(&pdev->dev, "pdn",
-+ GPIOD_OUT_LOW);
-+ if (IS_ERR(pdn_gpio)) {
-+ ret = PTR_ERR(pdn_gpio);
-+ dev_err(&pdev->dev, "failed to get pdn gpio: %d\n",
-+ ret);
-+ return ret;
-+ }
-+
-+ ret = snd_soc_register_card(&snd_pifi_40);
-+ if (ret < 0) {
-+ dev_err(&pdev->dev,
-+ "snd_soc_register_card() failed: %d\n", ret);
-+ return ret;
-+ }
-+
-+ return 0;
-+ }
-+
-+ return -EINVAL;
-+}
-+
-+static int snd_pifi_40_remove(struct platform_device *pdev)
-+{
-+ struct snd_soc_card *card = platform_get_drvdata(pdev);
-+
-+ kfree(&card->drvdata);
-+ snd_pifi_40_pdn(&snd_pifi_40, 0);
-+ return snd_soc_unregister_card(&snd_pifi_40);
-+}
-+
-+static const struct of_device_id snd_pifi_40_of_match[] = {
-+ {
-+ .compatible = "pifi,pifi-40",
-+ },
-+ { /* sentinel */ },
-+};
-+
-+MODULE_DEVICE_TABLE(of, snd_pifi_40_of_match);
-+
-+static struct platform_driver snd_pifi_40_driver = {
-+ .driver = {
-+ .name = "snd-pifi-40",
-+ .owner = THIS_MODULE,
-+ .of_match_table = snd_pifi_40_of_match,
-+ },
-+ .probe = snd_pifi_40_probe,
-+ .remove = snd_pifi_40_remove,
-+};
-+
-+module_platform_driver(snd_pifi_40_driver);
-+
-+MODULE_AUTHOR("David Knell <david.knell@gmail.com>");
-+MODULE_DESCRIPTION("ALSA ASoC Machine Driver for PiFi-40");
-+MODULE_LICENSE("GPL v2");
projects / openwrt / staging / chunkeey.git / blobdiff