@@ -2323,6 +2323,7 @@ M: Peter Rosin <peda@axentia.se>
L: alsa-devel@alsa-project.org (moderated for non-subscribers)
S: Maintained
F: Documentation/devicetree/bindings/sound/axentia,*
+F: sound/soc/axentia/
AZ6007 DVB DRIVER
M: Mauro Carvalho Chehab <mchehab@s-opensource.com>
@@ -41,6 +41,7 @@ source "sound/soc/adi/Kconfig"
source "sound/soc/amd/Kconfig"
source "sound/soc/atmel/Kconfig"
source "sound/soc/au1x/Kconfig"
+source "sound/soc/axentia/Kconfig"
source "sound/soc/bcm/Kconfig"
source "sound/soc/blackfin/Kconfig"
source "sound/soc/cirrus/Kconfig"
@@ -21,6 +21,7 @@ obj-$(CONFIG_SND_SOC) += adi/
obj-$(CONFIG_SND_SOC) += amd/
obj-$(CONFIG_SND_SOC) += atmel/
obj-$(CONFIG_SND_SOC) += au1x/
+obj-$(CONFIG_SND_SOC) += axentia/
obj-$(CONFIG_SND_SOC) += bcm/
obj-$(CONFIG_SND_SOC) += blackfin/
obj-$(CONFIG_SND_SOC) += cirrus/
new file mode 100644
@@ -0,0 +1,10 @@
+config SND_SOC_AXENTIA_TSE850_PCM5142
+ tristate "ASoC driver for the Axentia TSE-850"
+ depends on ARCH_AT91 && OF
+ select ATMEL_SSC
+ select SND_ATMEL_SOC
+ select SND_ATMEL_SOC_SSC_DMA
+ select SND_SOC_PCM512x_I2C
+ help
+ Say Y if you want to add support for the ASoC driver for the
+ Axentia TSE-850 with a PCM5142 codec.
new file mode 100644
@@ -0,0 +1,3 @@
+snd-soc-tse850-pcm5142-objs := tse850-pcm5142.o
+
+obj-$(CONFIG_SND_SOC_AXENTIA_TSE850_PCM5142) += snd-soc-tse850-pcm5142.o
new file mode 100644
@@ -0,0 +1,504 @@
+/*
+ * TSE-850 audio - ASoC driver for the Axentia TSE-850 with a PCM5142 codec
+ *
+ * Copyright (C) 2016 Axentia Technologies AB
+ *
+ * Author: Peter Rosin <peda@axentia.se>
+ *
+ * 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.
+ */
+
+/*
+ * loop1 relays
+ * IN1 +---o +------------+ o---+ OUT1
+ * \ /
+ * + +
+ * | / |
+ * +--o +--. |
+ * | add | |
+ * | V |
+ * | .---. |
+ * DAC +----------->|Sum|---+
+ * | '---' |
+ * | |
+ * + +
+ *
+ * IN2 +---o--+------------+--o---+ OUT2
+ * loop2 relays
+ *
+ * The 'loop1' gpio pin controlls two relays, which are either in loop
+ * position, meaning that input and output are directly connected, or
+ * they are in mixer position, meaning that the signal is passed through
+ * the 'Sum' mixer. Similarly for 'loop2'.
+ *
+ * In the above, the 'loop1' relays are inactive, thus feeding IN1 to the
+ * mixer (if 'add' is active) and feeding the mixer output to OUT1. The
+ * 'loop2' relays are active, short-cutting the TSE-850 from channel 2.
+ * IN1, IN2, OUT1 and OUT2 are TSE-850 connectors and DAC is the PCB name
+ * of the (filtered) output from the PCM5142 codec.
+ */
+
+#include <linux/clk.h>
+#include <linux/gpio.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <linux/regulator/consumer.h>
+
+#include <sound/soc.h>
+#include <sound/pcm_params.h>
+
+#include "../atmel/atmel_ssc_dai.h"
+
+struct tse850_priv {
+ int ssc_id;
+
+ struct gpio_desc *add;
+ struct gpio_desc *loop1;
+ struct gpio_desc *loop2;
+
+ struct regulator *ana;
+};
+
+static int tse850_get_mux1(struct snd_kcontrol *kctrl,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kctrl);
+ struct snd_soc_card *card = dapm->card;
+ struct tse850_priv *tse850 = snd_soc_card_get_drvdata(card);
+ int ret;
+
+ ret = gpiod_get_value(tse850->loop1);
+ if (ret < 0)
+ return ret;
+
+ ucontrol->value.enumerated.item[0] = ret;
+
+ return 0;
+}
+
+static int tse850_put_mux1(struct snd_kcontrol *kctrl,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kctrl);
+ struct snd_soc_card *card = dapm->card;
+ struct tse850_priv *tse850 = snd_soc_card_get_drvdata(card);
+ struct soc_enum *e = (struct soc_enum *)kctrl->private_value;
+ unsigned int val = ucontrol->value.enumerated.item[0];
+
+ if (val >= e->items)
+ return -EINVAL;
+
+ gpiod_set_value(tse850->loop1, val);
+
+ return snd_soc_dapm_put_enum_double(kctrl, ucontrol);
+}
+
+static int tse850_get_mux2(struct snd_kcontrol *kctrl,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kctrl);
+ struct snd_soc_card *card = dapm->card;
+ struct tse850_priv *tse850 = snd_soc_card_get_drvdata(card);
+ int ret;
+
+ ret = gpiod_get_value(tse850->loop2);
+ if (ret < 0)
+ return ret;
+
+ ucontrol->value.enumerated.item[0] = ret;
+
+ return 0;
+}
+
+static int tse850_put_mux2(struct snd_kcontrol *kctrl,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kctrl);
+ struct snd_soc_card *card = dapm->card;
+ struct tse850_priv *tse850 = snd_soc_card_get_drvdata(card);
+ struct soc_enum *e = (struct soc_enum *)kctrl->private_value;
+ unsigned int val = ucontrol->value.enumerated.item[0];
+
+ if (val >= e->items)
+ return -EINVAL;
+
+ gpiod_set_value(tse850->loop2, val);
+
+ return snd_soc_dapm_put_enum_double(kctrl, ucontrol);
+}
+
+int tse850_get_mix(struct snd_kcontrol *kctrl,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kctrl);
+ struct snd_soc_card *card = dapm->card;
+ struct tse850_priv *tse850 = snd_soc_card_get_drvdata(card);
+ int ret;
+
+ ret = gpiod_get_value(tse850->add);
+ if (ret < 0)
+ return ret;
+
+ ucontrol->value.enumerated.item[0] = ret;
+
+ return 0;
+}
+
+int tse850_put_mix(struct snd_kcontrol *kctrl,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kctrl);
+ struct snd_soc_card *card = dapm->card;
+ struct tse850_priv *tse850 = snd_soc_card_get_drvdata(card);
+ int old;
+ int connect;
+
+ connect = !!ucontrol->value.integer.value[0];
+ old = gpiod_get_value(tse850->add);
+
+ if (old == connect)
+ return 0;
+
+ /*
+ * Hmmm, this gpiod_set_value call should probably happen
+ * inside snd_soc_dapm_mixer_update_power in the loop.
+ */
+ gpiod_set_value(tse850->add, connect);
+
+ snd_soc_dapm_mixer_update_power(dapm, kctrl, connect, NULL);
+ return 1;
+}
+
+int tse850_get_ana(struct snd_kcontrol *kctrl,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kctrl);
+ struct snd_soc_card *card = dapm->card;
+ struct tse850_priv *tse850 = snd_soc_card_get_drvdata(card);
+ int ret;
+
+ ret = regulator_get_voltage(tse850->ana);
+ if (ret < 0)
+ return ret;
+
+ if (ret < 11000000)
+ ret = 11000000;
+ else if (ret > 20000000)
+ ret = 20000000;
+ ret -= 11000000;
+ ret = (ret + 500000) / 1000000;
+
+ ucontrol->value.enumerated.item[0] = ret;
+
+ return 0;
+}
+
+int tse850_put_ana(struct snd_kcontrol *kctrl,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kctrl);
+ struct snd_soc_card *card = dapm->card;
+ struct tse850_priv *tse850 = snd_soc_card_get_drvdata(card);
+ struct soc_enum *e = (struct soc_enum *)kctrl->private_value;
+ unsigned int uV = ucontrol->value.enumerated.item[0];
+ int ret;
+
+ if (uV >= e->items)
+ return -EINVAL;
+
+ /*
+ * Map enum zero (Low) to 2 volts on the regulator, do this since
+ * the ana regulator is supplied by the system 12V voltage and
+ * requesting anything below the system voltage causes the system
+ * voltage to be passed through the regulator. Also, the ana
+ * regulator induces noise when requesting voltages near the
+ * system voltage. So, by mapping Low to 2V, that noise is
+ * eliminated when all that is needed is 12V (the system voltage).
+ */
+ if (uV)
+ uV = 11000000 + (1000000 * uV);
+ else
+ uV = 2000000;
+
+ ret = regulator_set_voltage(tse850->ana, uV, uV);
+ if (ret < 0)
+ return ret;
+
+ return snd_soc_dapm_put_enum_double(kctrl, ucontrol);
+}
+
+static const char * const mux_text[] = { "Mixer", "Loop" };
+
+static const struct soc_enum mux_enum =
+ SOC_ENUM_SINGLE(SND_SOC_NOPM, 0, 2, mux_text);
+
+static const struct snd_kcontrol_new mux1 =
+ SOC_DAPM_ENUM_EXT("MUX1", mux_enum, tse850_get_mux1, tse850_put_mux1);
+
+static const struct snd_kcontrol_new mux2 =
+ SOC_DAPM_ENUM_EXT("MUX2", mux_enum, tse850_get_mux2, tse850_put_mux2);
+
+#define TSE850_DAPM_SINGLE_EXT(xname, reg, shift, max, invert, xget, xput) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
+ .info = snd_soc_info_volsw, \
+ .get = xget, \
+ .put = xput, \
+ .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert, 0) }
+
+static const struct snd_kcontrol_new mix[] = {
+ TSE850_DAPM_SINGLE_EXT("IN Switch", SND_SOC_NOPM, 0, 1, 0,
+ tse850_get_mix, tse850_put_mix),
+};
+
+static const char * const ana_text[] = {
+ "Low", "12V", "13V", "14V", "15V", "16V", "17V", "18V", "19V", "20V"
+};
+
+static const struct soc_enum ana_enum =
+ SOC_ENUM_SINGLE(SND_SOC_NOPM, 0, 9, ana_text);
+
+static const struct snd_kcontrol_new out =
+ SOC_DAPM_ENUM_EXT("ANA", ana_enum, tse850_get_ana, tse850_put_ana);
+
+static const struct snd_soc_dapm_widget tse850_dapm_widgets[] = {
+ SND_SOC_DAPM_LINE("OUT1", NULL),
+ SND_SOC_DAPM_LINE("OUT2", NULL),
+ SND_SOC_DAPM_LINE("IN1", NULL),
+ SND_SOC_DAPM_LINE("IN2", NULL),
+ SND_SOC_DAPM_INPUT("DAC"),
+ SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0),
+ SOC_MIXER_ARRAY("MIX", SND_SOC_NOPM, 0, 0, mix),
+ SND_SOC_DAPM_MUX("MUX1", SND_SOC_NOPM, 0, 0, &mux1),
+ SND_SOC_DAPM_MUX("MUX2", SND_SOC_NOPM, 0, 0, &mux2),
+ SND_SOC_DAPM_OUT_DRV("OUT", SND_SOC_NOPM, 0, 0, &out, 1),
+};
+
+/*
+ * These connections are not entirely correct, since both IN1 and IN2
+ * are always fed to MIX (if the "IN switch" is set so), i.e. without
+ * regard to the loop1 and loop2 relays that according to this only
+ * control MUX1 and MUX2 but in fact also control how the input signals
+ * are routed.
+ * But, 1) I don't know how to do it right, and 2) it doesn't seem to
+ * matter in practice since nothing is powered in those sections anyway.
+ */
+static const struct snd_soc_dapm_route tse850_intercon[] = {
+ { "OUT1", NULL, "MUX1" },
+ { "OUT2", NULL, "MUX2" },
+
+ { "MUX1", "Loop", "IN1" },
+ { "MUX1", "Mixer", "OUT" },
+
+ { "MUX2", "Loop", "IN2" },
+ { "MUX2", "Mixer", "OUT" },
+
+ { "OUT", NULL, "MIX" },
+
+ { "MIX", NULL, "DAC" },
+ { "MIX", "IN Switch", "IN1" },
+ { "MIX", "IN Switch", "IN2" },
+
+ /* connect board input to the codec left channel output pin */
+ { "DAC", NULL, "OUTL" },
+};
+
+static int tse850_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct device *dev = rtd->dev;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+ int dir = substream->stream != SNDRV_PCM_STREAM_PLAYBACK;
+ int div_id = dir ? ATMEL_SSC_RCMR_PERIOD : ATMEL_SSC_TCMR_PERIOD;
+ int period = snd_soc_params_to_frame_size(params) / 2 - 1;
+ int ret;
+
+ ret = snd_soc_dai_set_clkdiv(cpu_dai, div_id, period);
+ if (ret < 0) {
+ dev_err(dev, "failed to set cpu dai lrclk %d divider\n", dir);
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct snd_soc_ops tse850_ops = {
+ .hw_params = tse850_hw_params,
+};
+
+static int tse850_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
+
+ return snd_soc_dapm_add_routes(dapm, tse850_intercon,
+ ARRAY_SIZE(tse850_intercon));
+}
+
+static struct snd_soc_dai_link tse850_dailink = {
+ .name = "TSE-850",
+ .stream_name = "TSE-850-PCM",
+ .codec_dai_name = "pcm512x-hifi",
+ .dai_fmt = SND_SOC_DAIFMT_I2S
+ | SND_SOC_DAIFMT_NB_NF
+ | SND_SOC_DAIFMT_CBM_CFS,
+ .init = tse850_init,
+ .ops = &tse850_ops,
+};
+
+static struct snd_soc_card tse850_card = {
+ .name = "TSE-850-ASoC",
+ .owner = THIS_MODULE,
+ .dai_link = &tse850_dailink,
+ .num_links = 1,
+ .dapm_widgets = tse850_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(tse850_dapm_widgets),
+ .fully_routed = true,
+};
+
+static int tse850_dt_init(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct device_node *codec_np, *cpu_np;
+ struct snd_soc_card *card = &tse850_card;
+ struct snd_soc_dai_link *dailink = &tse850_dailink;
+ struct tse850_priv *tse850 = snd_soc_card_get_drvdata(card);
+
+ if (!np) {
+ dev_err(&pdev->dev, "only device tree supported\n");
+ return -EINVAL;
+ }
+
+ cpu_np = of_parse_phandle(np, "axentia,ssc-controller", 0);
+ if (!cpu_np) {
+ dev_err(&pdev->dev, "failed to get dai and pcm info\n");
+ return -EINVAL;
+ }
+ dailink->cpu_of_node = cpu_np;
+ dailink->platform_of_node = cpu_np;
+ tse850->ssc_id = of_alias_get_id(cpu_np, "ssc");
+ of_node_put(cpu_np);
+
+ codec_np = of_parse_phandle(np, "axentia,audio-codec", 0);
+ if (!codec_np) {
+ dev_err(&pdev->dev, "failed to get codec info\n");
+ return -EINVAL;
+ }
+ dailink->codec_of_node = codec_np;
+ of_node_put(codec_np);
+
+ return 0;
+}
+
+static int tse850_probe(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = &tse850_card;
+ struct device *dev = card->dev = &pdev->dev;
+ struct tse850_priv *tse850;
+ int ret;
+
+ tse850 = devm_kzalloc(dev, sizeof(*tse850), GFP_KERNEL);
+ if (!tse850)
+ return -ENOMEM;
+
+ snd_soc_card_set_drvdata(card, tse850);
+
+ ret = tse850_dt_init(pdev);
+ if (ret) {
+ dev_err(dev, "failed to init dt info\n");
+ return ret;
+ }
+
+ tse850->add = devm_gpiod_get(dev, "axentia,add", GPIOD_OUT_HIGH);
+ if (IS_ERR(tse850->add)) {
+ if (PTR_ERR(tse850->add) != -EPROBE_DEFER)
+ dev_err(dev, "failed to get 'add' gpio\n");
+ return PTR_ERR(tse850->add);
+ }
+
+ tse850->loop1 = devm_gpiod_get(dev, "axentia,loop1", GPIOD_OUT_HIGH);
+ if (IS_ERR(tse850->loop1)) {
+ if (PTR_ERR(tse850->loop1) != -EPROBE_DEFER)
+ dev_err(dev, "failed to get 'loop1' gpio\n");
+ return PTR_ERR(tse850->loop1);
+ }
+
+ tse850->loop2 = devm_gpiod_get(dev, "axentia,loop2", GPIOD_OUT_HIGH);
+ if (IS_ERR(tse850->loop2)) {
+ if (PTR_ERR(tse850->loop2) != -EPROBE_DEFER)
+ dev_err(dev, "failed to get 'loop2' gpio\n");
+ return PTR_ERR(tse850->loop2);
+ }
+
+ tse850->ana = devm_regulator_get(dev, "axentia,ana");
+ if (IS_ERR(tse850->ana)) {
+ if (PTR_ERR(tse850->ana) != -EPROBE_DEFER)
+ dev_err(dev, "failed to get 'ana' regulator\n");
+ return PTR_ERR(tse850->ana);
+ }
+
+ ret = regulator_enable(tse850->ana);
+ if (ret < 0) {
+ dev_err(dev, "failed to enable the 'ana' regulator\n");
+ return ret;
+ }
+
+ ret = atmel_ssc_set_audio(tse850->ssc_id);
+ if (ret != 0) {
+ dev_err(dev,
+ "failed to set SSC %d for audio\n", tse850->ssc_id);
+ goto err_disable_ana;
+ }
+
+ ret = snd_soc_register_card(card);
+ if (ret) {
+ dev_err(dev, "snd_soc_register_card failed\n");
+ goto err_put_audio;
+ }
+
+ return 0;
+
+err_put_audio:
+ atmel_ssc_put_audio(tse850->ssc_id);
+err_disable_ana:
+ regulator_disable(tse850->ana);
+ return ret;
+}
+
+static int tse850_remove(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = platform_get_drvdata(pdev);
+ struct tse850_priv *tse850 = snd_soc_card_get_drvdata(card);
+
+ snd_soc_unregister_card(card);
+ atmel_ssc_put_audio(tse850->ssc_id);
+ regulator_disable(tse850->ana);
+
+ return 0;
+}
+
+static const struct of_device_id tse850_dt_ids[] = {
+ { .compatible = "axentia,tse850-pcm5142", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, tse850_dt_ids);
+
+static struct platform_driver tse850_driver = {
+ .driver = {
+ .name = "axentia-tse850-pcm5142",
+ .of_match_table = of_match_ptr(tse850_dt_ids),
+ },
+ .probe = tse850_probe,
+ .remove = tse850_remove,
+};
+
+module_platform_driver(tse850_driver);
+
+/* Module information */
+MODULE_AUTHOR("Peter Rosin <peda@axentia.se>");
+MODULE_DESCRIPTION("ALSA SoC driver for TSE-850 with PCM5142 codec");
+MODULE_LICENSE("GPL");
The TSE-850 is an FM Transmitter Station Equipment, designed to generate baseband signals for FM, mainly the DARC subcarrier, but other signals are also possible. Signed-off-by: Peter Rosin <peda@axentia.se> --- MAINTAINERS | 1 + sound/soc/Kconfig | 1 + sound/soc/Makefile | 1 + sound/soc/axentia/Kconfig | 10 + sound/soc/axentia/Makefile | 3 + sound/soc/axentia/tse850-pcm5142.c | 504 +++++++++++++++++++++++++++++++++++++ 6 files changed, 520 insertions(+) create mode 100644 sound/soc/axentia/Kconfig create mode 100644 sound/soc/axentia/Makefile create mode 100644 sound/soc/axentia/tse850-pcm5142.c