* [PATCH v3 1/2] ASoC: add support for TAS5805M digital amplifier
2022-01-16 1:58 ` Daniel Beer
@ 2022-01-16 1:55 ` Daniel Beer
-1 siblings, 0 replies; 8+ messages in thread
From: Daniel Beer @ 2022-01-16 1:55 UTC (permalink / raw)
To: alsa-devel, devicetree
Cc: linux-kernel, Andy Liu, Daniel Beer, Derek Simkowiak, Mark Brown,
Rob Herring, Liam Girdwood
The Texas Instruments TAS5805M is a class D audio amplifier with an
integrated DSP. DSP configuration is supplied in a firmware image
specified through a device-tree attribute.
These register writes set up application-specific DSP settings and are
expected to be generated using TI's PPC3 tool.
Signed-off-by: Daniel Beer <daniel.beer@igorinstitute.com>
---
sound/soc/codecs/Kconfig | 9 +
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/tas5805m.c | 567 ++++++++++++++++++++++++++++++++++++
3 files changed, 578 insertions(+)
create mode 100644 sound/soc/codecs/tas5805m.c
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index d3e5ae8310ef..d6b8f5cb6ef8 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -1485,6 +1485,15 @@ config SND_SOC_TAS5720
Enable support for Texas Instruments TAS5720L/M high-efficiency mono
Class-D audio power amplifiers.
+config SND_SOC_TAS5805M
+ tristate "Texas Instruments TAS5805M speaker amplifier"
+ depends on I2C
+ help
+ Enable support for Texas Instruments TAS5805M Class-D
+ amplifiers. This is a speaker amplifier with an integrated
+ DSP. DSP configuration for each instance needs to be supplied
+ via a device-tree attribute.
+
config SND_SOC_TAS6424
tristate "Texas Instruments TAS6424 Quad-Channel Audio amplifier"
depends on I2C
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index ac7f20972470..b4e11c3e4a08 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -236,6 +236,7 @@ snd-soc-sti-sas-objs := sti-sas.o
snd-soc-tas5086-objs := tas5086.o
snd-soc-tas571x-objs := tas571x.o
snd-soc-tas5720-objs := tas5720.o
+snd-soc-tas5805m-objs := tas5805m.o
snd-soc-tas6424-objs := tas6424.o
snd-soc-tda7419-objs := tda7419.o
snd-soc-tas2770-objs := tas2770.o
@@ -574,6 +575,7 @@ obj-$(CONFIG_SND_SOC_TAS2764) += snd-soc-tas2764.o
obj-$(CONFIG_SND_SOC_TAS5086) += snd-soc-tas5086.o
obj-$(CONFIG_SND_SOC_TAS571X) += snd-soc-tas571x.o
obj-$(CONFIG_SND_SOC_TAS5720) += snd-soc-tas5720.o
+obj-$(CONFIG_SND_SOC_TAS5805M) += snd-soc-tas5805m.o
obj-$(CONFIG_SND_SOC_TAS6424) += snd-soc-tas6424.o
obj-$(CONFIG_SND_SOC_TDA7419) += snd-soc-tda7419.o
obj-$(CONFIG_SND_SOC_TAS2770) += snd-soc-tas2770.o
diff --git a/sound/soc/codecs/tas5805m.c b/sound/soc/codecs/tas5805m.c
new file mode 100644
index 000000000000..fa0e81ec875a
--- /dev/null
+++ b/sound/soc/codecs/tas5805m.c
@@ -0,0 +1,567 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Driver for the TAS5805M Audio Amplifier
+//
+// Author: Andy Liu <andy-liu@ti.com>
+// Author: Daniel Beer <daniel.beer@igorinstitute.com>
+//
+// This is based on a driver originally written by Andy Liu at TI and
+// posted here:
+//
+// https://e2e.ti.com/support/audio-group/audio/f/audio-forum/722027/linux-tas5825m-linux-drivers
+//
+// It has been simplified a little and reworked for the 5.x ALSA SoC API.
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/firmware.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
+#include <linux/atomic.h>
+#include <linux/workqueue.h>
+
+#include <sound/soc.h>
+#include <sound/pcm.h>
+#include <sound/initval.h>
+
+/* Datasheet-defined registers on page 0, book 0 */
+#define REG_PAGE 0x00
+#define REG_DEVICE_CTRL_1 0x02
+#define REG_DEVICE_CTRL_2 0x03
+#define REG_SIG_CH_CTRL 0x28
+#define REG_SAP_CTRL_1 0x33
+#define REG_FS_MON 0x37
+#define REG_BCK_MON 0x38
+#define REG_CLKDET_STATUS 0x39
+#define REG_VOL_CTL 0x4c
+#define REG_AGAIN 0x54
+#define REG_ADR_PIN_CTRL 0x60
+#define REG_ADR_PIN_CONFIG 0x61
+#define REG_CHAN_FAULT 0x70
+#define REG_GLOBAL_FAULT1 0x71
+#define REG_GLOBAL_FAULT2 0x72
+#define REG_FAULT 0x78
+#define REG_BOOK 0x7f
+
+/* DEVICE_CTRL_2 register values */
+#define DCTRL2_MODE_DEEP_SLEEP 0x00
+#define DCTRL2_MODE_SLEEP 0x01
+#define DCTRL2_MODE_HIZ 0x02
+#define DCTRL2_MODE_PLAY 0x03
+
+#define DCTRL2_MUTE 0x08
+#define DCTRL2_DIS_DSP 0x10
+
+/* This sequence of register writes must always be sent, prior to the
+ * 5ms delay while we wait for the DSP to boot.
+ */
+static const uint8_t dsp_cfg_preboot[] = {
+ 0x00, 0x00, 0x7f, 0x00, 0x03, 0x02, 0x01, 0x11,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x7f, 0x00, 0x03, 0x02,
+};
+
+static const uint32_t tas5805m_volume[] = {
+ 0x0000001B, /* 0, -110dB */ 0x0000001E, /* 1, -109dB */
+ 0x00000021, /* 2, -108dB */ 0x00000025, /* 3, -107dB */
+ 0x0000002A, /* 4, -106dB */ 0x0000002F, /* 5, -105dB */
+ 0x00000035, /* 6, -104dB */ 0x0000003B, /* 7, -103dB */
+ 0x00000043, /* 8, -102dB */ 0x0000004B, /* 9, -101dB */
+ 0x00000054, /* 10, -100dB */ 0x0000005E, /* 11, -99dB */
+ 0x0000006A, /* 12, -98dB */ 0x00000076, /* 13, -97dB */
+ 0x00000085, /* 14, -96dB */ 0x00000095, /* 15, -95dB */
+ 0x000000A7, /* 16, -94dB */ 0x000000BC, /* 17, -93dB */
+ 0x000000D3, /* 18, -92dB */ 0x000000EC, /* 19, -91dB */
+ 0x00000109, /* 20, -90dB */ 0x0000012A, /* 21, -89dB */
+ 0x0000014E, /* 22, -88dB */ 0x00000177, /* 23, -87dB */
+ 0x000001A4, /* 24, -86dB */ 0x000001D8, /* 25, -85dB */
+ 0x00000211, /* 26, -84dB */ 0x00000252, /* 27, -83dB */
+ 0x0000029A, /* 28, -82dB */ 0x000002EC, /* 29, -81dB */
+ 0x00000347, /* 30, -80dB */ 0x000003AD, /* 31, -79dB */
+ 0x00000420, /* 32, -78dB */ 0x000004A1, /* 33, -77dB */
+ 0x00000532, /* 34, -76dB */ 0x000005D4, /* 35, -75dB */
+ 0x0000068A, /* 36, -74dB */ 0x00000756, /* 37, -73dB */
+ 0x0000083B, /* 38, -72dB */ 0x0000093C, /* 39, -71dB */
+ 0x00000A5D, /* 40, -70dB */ 0x00000BA0, /* 41, -69dB */
+ 0x00000D0C, /* 42, -68dB */ 0x00000EA3, /* 43, -67dB */
+ 0x0000106C, /* 44, -66dB */ 0x0000126D, /* 45, -65dB */
+ 0x000014AD, /* 46, -64dB */ 0x00001733, /* 47, -63dB */
+ 0x00001A07, /* 48, -62dB */ 0x00001D34, /* 49, -61dB */
+ 0x000020C5, /* 50, -60dB */ 0x000024C4, /* 51, -59dB */
+ 0x00002941, /* 52, -58dB */ 0x00002E49, /* 53, -57dB */
+ 0x000033EF, /* 54, -56dB */ 0x00003A45, /* 55, -55dB */
+ 0x00004161, /* 56, -54dB */ 0x0000495C, /* 57, -53dB */
+ 0x0000524F, /* 58, -52dB */ 0x00005C5A, /* 59, -51dB */
+ 0x0000679F, /* 60, -50dB */ 0x00007444, /* 61, -49dB */
+ 0x00008274, /* 62, -48dB */ 0x0000925F, /* 63, -47dB */
+ 0x0000A43B, /* 64, -46dB */ 0x0000B845, /* 65, -45dB */
+ 0x0000CEC1, /* 66, -44dB */ 0x0000E7FB, /* 67, -43dB */
+ 0x00010449, /* 68, -42dB */ 0x0001240C, /* 69, -41dB */
+ 0x000147AE, /* 70, -40dB */ 0x00016FAA, /* 71, -39dB */
+ 0x00019C86, /* 72, -38dB */ 0x0001CEDC, /* 73, -37dB */
+ 0x00020756, /* 74, -36dB */ 0x000246B5, /* 75, -35dB */
+ 0x00028DCF, /* 76, -34dB */ 0x0002DD96, /* 77, -33dB */
+ 0x00033718, /* 78, -32dB */ 0x00039B87, /* 79, -31dB */
+ 0x00040C37, /* 80, -30dB */ 0x00048AA7, /* 81, -29dB */
+ 0x00051884, /* 82, -28dB */ 0x0005B7B1, /* 83, -27dB */
+ 0x00066A4A, /* 84, -26dB */ 0x000732AE, /* 85, -25dB */
+ 0x00081385, /* 86, -24dB */ 0x00090FCC, /* 87, -23dB */
+ 0x000A2ADB, /* 88, -22dB */ 0x000B6873, /* 89, -21dB */
+ 0x000CCCCD, /* 90, -20dB */ 0x000E5CA1, /* 91, -19dB */
+ 0x00101D3F, /* 92, -18dB */ 0x0012149A, /* 93, -17dB */
+ 0x00144961, /* 94, -16dB */ 0x0016C311, /* 95, -15dB */
+ 0x00198A13, /* 96, -14dB */ 0x001CA7D7, /* 97, -13dB */
+ 0x002026F3, /* 98, -12dB */ 0x00241347, /* 99, -11dB */
+ 0x00287A27, /* 100, -10dB */ 0x002D6A86, /* 101, -9dB */
+ 0x0032F52D, /* 102, -8dB */ 0x00392CEE, /* 103, -7dB */
+ 0x004026E7, /* 104, -6dB */ 0x0047FACD, /* 105, -5dB */
+ 0x0050C336, /* 106, -4dB */ 0x005A9DF8, /* 107, -3dB */
+ 0x0065AC8C, /* 108, -2dB */ 0x00721483, /* 109, -1dB */
+ 0x00800000, /* 110, 0dB */ 0x008F9E4D, /* 111, 1dB */
+ 0x00A12478, /* 112, 2dB */ 0x00B4CE08, /* 113, 3dB */
+ 0x00CADDC8, /* 114, 4dB */ 0x00E39EA9, /* 115, 5dB */
+ 0x00FF64C1, /* 116, 6dB */ 0x011E8E6A, /* 117, 7dB */
+ 0x0141857F, /* 118, 8dB */ 0x0168C0C6, /* 119, 9dB */
+ 0x0194C584, /* 120, 10dB */ 0x01C62940, /* 121, 11dB */
+ 0x01FD93C2, /* 122, 12dB */ 0x023BC148, /* 123, 13dB */
+ 0x02818508, /* 124, 14dB */ 0x02CFCC01, /* 125, 15dB */
+ 0x0327A01A, /* 126, 16dB */ 0x038A2BAD, /* 127, 17dB */
+ 0x03F8BD7A, /* 128, 18dB */ 0x0474CD1B, /* 129, 19dB */
+ 0x05000000, /* 130, 20dB */ 0x059C2F02, /* 131, 21dB */
+ 0x064B6CAE, /* 132, 22dB */ 0x07100C4D, /* 133, 23dB */
+ 0x07ECA9CD, /* 134, 24dB */ 0x08E43299, /* 135, 25dB */
+ 0x09F9EF8E, /* 136, 26dB */ 0x0B319025, /* 137, 27dB */
+ 0x0C8F36F2, /* 138, 28dB */ 0x0E1787B8, /* 139, 29dB */
+ 0x0FCFB725, /* 140, 30dB */ 0x11BD9C84, /* 141, 31dB */
+ 0x13E7C594, /* 142, 32dB */ 0x16558CCB, /* 143, 33dB */
+ 0x190F3254, /* 144, 34dB */ 0x1C1DF80E, /* 145, 35dB */
+ 0x1F8C4107, /* 146, 36dB */ 0x2365B4BF, /* 147, 37dB */
+ 0x27B766C2, /* 148, 38dB */ 0x2C900313, /* 149, 39dB */
+ 0x32000000, /* 150, 40dB */ 0x3819D612, /* 151, 41dB */
+ 0x3EF23ECA, /* 152, 42dB */ 0x46A07B07, /* 153, 43dB */
+ 0x4F3EA203, /* 154, 44dB */ 0x58E9F9F9, /* 155, 45dB */
+ 0x63C35B8E, /* 156, 46dB */ 0x6FEFA16D, /* 157, 47dB */
+ 0x7D982575, /* 158, 48dB */
+};
+
+#define TAS5805M_VOLUME_MAX ((int)ARRAY_SIZE(tas5805m_volume) - 1)
+#define TAS5805M_VOLUME_MIN 0
+
+struct tas5805m_priv {
+ struct regulator *pvdd;
+ struct gpio_desc *gpio_pdn_n;
+
+ uint8_t *dsp_cfg_data;
+ int dsp_cfg_len;
+
+ struct regmap *regmap;
+
+ int vol[2];
+ bool is_powered;
+ bool is_muted;
+};
+
+static void set_dsp_scale(struct regmap *rm, int offset, int vol)
+{
+ uint8_t v[4];
+ uint32_t x = tas5805m_volume[vol];
+ int i;
+
+ for (i = 0; i < 4; i++) {
+ v[3 - i] = x;
+ x >>= 8;
+ }
+
+ regmap_bulk_write(rm, offset, v, ARRAY_SIZE(v));
+}
+
+static void tas5805m_refresh(struct snd_soc_component *component)
+{
+ struct tas5805m_priv *tas5805m =
+ snd_soc_component_get_drvdata(component);
+ struct regmap *rm = tas5805m->regmap;
+
+ dev_dbg(component->dev, "refresh: is_muted=%d, vol=%d/%d\n",
+ tas5805m->is_muted, tas5805m->vol[0], tas5805m->vol[1]);
+
+ regmap_write(rm, REG_PAGE, 0x00);
+ regmap_write(rm, REG_BOOK, 0x8c);
+ regmap_write(rm, REG_PAGE, 0x2a);
+
+ /* Refresh volume. The actual volume control documented in the
+ * datasheet doesn't seem to work correctly. This is a pair of
+ * DSP registers which are *not* documented in the datasheet.
+ */
+ set_dsp_scale(rm, 0x24, tas5805m->vol[0]);
+ set_dsp_scale(rm, 0x28, tas5805m->vol[1]);
+
+ /* Set/clear digital soft-mute */
+ regmap_write(rm, REG_DEVICE_CTRL_2,
+ (tas5805m->is_muted ? DCTRL2_MUTE : 0) |
+ DCTRL2_MODE_PLAY);
+}
+
+static int tas5805m_vol_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 2;
+
+ uinfo->value.integer.min = TAS5805M_VOLUME_MIN;
+ uinfo->value.integer.max = TAS5805M_VOLUME_MAX;
+ return 0;
+}
+
+static int tas5805m_vol_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component =
+ snd_soc_kcontrol_component(kcontrol);
+ struct tas5805m_priv *tas5805m =
+ snd_soc_component_get_drvdata(component);
+
+ ucontrol->value.integer.value[0] = tas5805m->vol[0];
+ ucontrol->value.integer.value[1] = tas5805m->vol[1];
+ return 0;
+}
+
+static inline int volume_is_valid(int v)
+{
+ return (v >= TAS5805M_VOLUME_MIN) && (v <= TAS5805M_VOLUME_MAX);
+}
+
+static int tas5805m_vol_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component =
+ snd_soc_kcontrol_component(kcontrol);
+ struct tas5805m_priv *tas5805m =
+ snd_soc_component_get_drvdata(component);
+
+ if (!(volume_is_valid(ucontrol->value.integer.value[0]) &&
+ volume_is_valid(ucontrol->value.integer.value[1])))
+ return -EINVAL;
+
+ if (tas5805m->vol[0] != ucontrol->value.integer.value[0] ||
+ tas5805m->vol[1] != ucontrol->value.integer.value[1]) {
+ tas5805m->vol[0] = ucontrol->value.integer.value[0];
+ tas5805m->vol[1] = ucontrol->value.integer.value[1];
+ dev_dbg(component->dev, "set vol=%d/%d (is_powered=%d)\n",
+ tas5805m->vol[0], tas5805m->vol[1],
+ tas5805m->is_powered);
+ if (tas5805m->is_powered)
+ tas5805m_refresh(component);
+ return 1;
+ }
+
+ return 0;
+}
+
+static const struct snd_kcontrol_new tas5805m_snd_controls[] = {
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Master Playback Volume",
+ .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |
+ SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .info = tas5805m_vol_info,
+ .get = tas5805m_vol_get,
+ .put = tas5805m_vol_put,
+ },
+};
+
+static void send_cfg(struct regmap *rm,
+ const uint8_t *s, unsigned int len)
+{
+ unsigned int i;
+
+ for (i = 0; i + 1 < len; i += 2)
+ regmap_write(rm, s[i], s[i + 1]);
+}
+
+/* The TAS5805M DSP can't be configured until the I2S clock has been
+ * present and stable for 5ms, or else it won't boot and we get no
+ * sound.
+ */
+static int tas5805m_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct tas5805m_priv *tas5805m =
+ snd_soc_component_get_drvdata(component);
+ struct regmap *rm = tas5805m->regmap;
+ unsigned int chan, global1, global2;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ dev_dbg(component->dev, "DSP startup\n");
+
+ /* We mustn't issue any I2C transactions until the I2S
+ * clock is stable. Furthermore, we must allow a 5ms
+ * delay after the first set of register writes to
+ * allow the DSP to boot before configuring it.
+ */
+ usleep_range(5000, 10000);
+ send_cfg(rm, dsp_cfg_preboot,
+ ARRAY_SIZE(dsp_cfg_preboot));
+ usleep_range(5000, 15000);
+ send_cfg(rm, tas5805m->dsp_cfg_data,
+ tas5805m->dsp_cfg_len);
+
+ tas5805m->is_powered = true;
+ tas5805m_refresh(component);
+ break;
+
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ dev_dbg(component->dev, "DSP shutdown\n");
+
+ tas5805m->is_powered = false;
+
+ regmap_write(rm, REG_PAGE, 0x00);
+ regmap_write(rm, REG_BOOK, 0x00);
+
+ regmap_read(rm, REG_CHAN_FAULT, &chan);
+ regmap_read(rm, REG_GLOBAL_FAULT1, &global1);
+ regmap_read(rm, REG_GLOBAL_FAULT2, &global2);
+
+ dev_dbg(component->dev,
+ "fault regs: CHAN=%02x, GLOBAL1=%02x, GLOBAL2=%02x\n",
+ chan, global1, global2);
+
+ regmap_write(rm, REG_DEVICE_CTRL_2, DCTRL2_MODE_HIZ);
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static const struct snd_soc_dapm_route tas5805m_audio_map[] = {
+ { "DAC", NULL, "DAC IN" },
+ { "OUT", NULL, "DAC" },
+};
+
+static const struct snd_soc_dapm_widget tas5805m_dapm_widgets[] = {
+ SND_SOC_DAPM_AIF_IN("DAC IN", "Playback", 0, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_OUTPUT("OUT")
+};
+
+static const struct snd_soc_component_driver soc_codec_dev_tas5805m = {
+ .controls = tas5805m_snd_controls,
+ .num_controls = ARRAY_SIZE(tas5805m_snd_controls),
+ .dapm_widgets = tas5805m_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(tas5805m_dapm_widgets),
+ .dapm_routes = tas5805m_audio_map,
+ .num_dapm_routes = ARRAY_SIZE(tas5805m_audio_map),
+ .use_pmdown_time = 1,
+ .endianness = 1,
+ .non_legacy_dai_naming = 1,
+};
+
+static int tas5805m_mute(struct snd_soc_dai *dai, int mute, int direction)
+{
+ struct snd_soc_component *component = dai->component;
+ struct tas5805m_priv *tas5805m =
+ snd_soc_component_get_drvdata(component);
+
+ dev_dbg(component->dev, "set mute=%d (is_powered=%d)\n",
+ mute, tas5805m->is_powered);
+ tas5805m->is_muted = mute;
+ if (tas5805m->is_powered)
+ tas5805m_refresh(component);
+
+ return 0;
+}
+
+static const struct snd_soc_dai_ops tas5805m_dai_ops = {
+ .trigger = tas5805m_trigger,
+ .mute_stream = tas5805m_mute,
+ .no_capture_mute = 1,
+};
+
+static struct snd_soc_dai_driver tas5805m_dai = {
+ .name = "tas5805m-amplifier",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_48000,
+ .formats = SNDRV_PCM_FMTBIT_S32_LE,
+ },
+ .ops = &tas5805m_dai_ops,
+};
+
+static const struct regmap_config tas5805m_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ /* We have quite a lot of multi-level bank switching and a
+ * relatively small number of register writes between bank
+ * switches.
+ */
+ .cache_type = REGCACHE_NONE,
+};
+
+static int tas5805m_i2c_probe(struct i2c_client *i2c)
+{
+ struct device *dev = &i2c->dev;
+ struct regmap *regmap;
+ struct tas5805m_priv *tas5805m;
+ char filename[128];
+ const char *config_name;
+ const struct firmware *fw;
+ int ret;
+
+ regmap = devm_regmap_init_i2c(i2c, &tas5805m_regmap);
+ if (IS_ERR(regmap)) {
+ ret = PTR_ERR(regmap);
+ dev_err(dev, "unable to allocate register map: %d\n", ret);
+ return ret;
+ }
+
+ tas5805m = devm_kzalloc(dev, sizeof(struct tas5805m_priv), GFP_KERNEL);
+ if (!tas5805m)
+ return -ENOMEM;
+
+ tas5805m->pvdd = devm_regulator_get(dev, "pvdd");
+ if (IS_ERR(tas5805m->pvdd)) {
+ dev_err(dev, "failed to get pvdd supply: %ld\n",
+ PTR_ERR(tas5805m->pvdd));
+ return PTR_ERR(tas5805m->pvdd);
+ }
+
+ dev_set_drvdata(dev, tas5805m);
+ tas5805m->regmap = regmap;
+ tas5805m->gpio_pdn_n = devm_gpiod_get(dev, "pdn", GPIOD_OUT_LOW);
+ if (IS_ERR(tas5805m->gpio_pdn_n)) {
+ dev_err(dev, "error requesting PDN gpio: %ld\n",
+ PTR_ERR(tas5805m->gpio_pdn_n));
+ return PTR_ERR(tas5805m->gpio_pdn_n);
+ }
+
+ /* This configuration must be generated by PPC3. The file loaded
+ * consists of a sequence of register writes, where bytes at
+ * even indices are register addresses and those at odd indices
+ * are register values.
+ *
+ * The fixed portion of PPC3's output prior to the 5ms delay
+ * should be omitted.
+ */
+ if (device_property_read_string(dev, "ti,dsp-config-name",
+ &config_name))
+ config_name = "default";
+
+ snprintf(filename, sizeof(filename), "tas5805m_dsp_%s.bin",
+ config_name);
+ ret = request_firmware(&fw, filename, dev);
+ if (ret)
+ return ret;
+
+ if ((fw->size < 2) || (fw->size & 1)) {
+ dev_err(dev, "firmware is invalid\n");
+ release_firmware(fw);
+ return -EINVAL;
+ }
+
+ tas5805m->dsp_cfg_len = fw->size;
+ tas5805m->dsp_cfg_data = devm_kmalloc(dev, fw->size, GFP_KERNEL);
+ if (!tas5805m->dsp_cfg_data) {
+ release_firmware(fw);
+ return -ENOMEM;
+ }
+ memcpy(tas5805m->dsp_cfg_data, fw->data, fw->size);
+
+ release_firmware(fw);
+
+ /* Do the first part of the power-on here, while we can expect
+ * the I2S interface to be quiet. We must raise PDN# and then
+ * wait 5ms before any I2S clock is sent, or else the internal
+ * regulator apparently won't come on.
+ *
+ * Also, we must keep the device in power down for 100ms or so
+ * after PVDD is applied, or else the ADR pin is sampled
+ * incorrectly and the device comes up with an unpredictable I2C
+ * address.
+ */
+ tas5805m->vol[0] = TAS5805M_VOLUME_MIN;
+ tas5805m->vol[1] = TAS5805M_VOLUME_MIN;
+
+ ret = regulator_enable(tas5805m->pvdd);
+ if (ret < 0) {
+ dev_err(dev, "failed to enable pvdd: %d\n", ret);
+ return ret;
+ }
+
+ usleep_range(100000, 150000);
+ gpiod_set_value(tas5805m->gpio_pdn_n, 1);
+ usleep_range(10000, 15000);
+
+ /* Don't register through devm. We need to be able to unregister
+ * the component prior to deasserting PDN#
+ */
+ ret = snd_soc_register_component(dev, &soc_codec_dev_tas5805m,
+ &tas5805m_dai, 1);
+ if (ret < 0) {
+ dev_err(dev, "unable to register codec: %d\n", ret);
+ gpiod_set_value(tas5805m->gpio_pdn_n, 0);
+ regulator_disable(tas5805m->pvdd);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int tas5805m_i2c_remove(struct i2c_client *i2c)
+{
+ struct device *dev = &i2c->dev;
+ struct tas5805m_priv *tas5805m = dev_get_drvdata(dev);
+
+ snd_soc_unregister_component(dev);
+ gpiod_set_value(tas5805m->gpio_pdn_n, 0);
+ usleep_range(10000, 15000);
+ regulator_disable(tas5805m->pvdd);
+ return 0;
+}
+
+static const struct i2c_device_id tas5805m_i2c_id[] = {
+ { "tas5805m", },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, tas5805m_i2c_id);
+
+#if IS_ENABLED(CONFIG_OF)
+static const struct of_device_id tas5805m_of_match[] = {
+ { .compatible = "ti,tas5805m", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, tas5805m_of_match);
+#endif
+
+static struct i2c_driver tas5805m_i2c_driver = {
+ .probe_new = tas5805m_i2c_probe,
+ .remove = tas5805m_i2c_remove,
+ .id_table = tas5805m_i2c_id,
+ .driver = {
+ .name = "tas5805m",
+ .of_match_table = of_match_ptr(tas5805m_of_match),
+ },
+};
+
+module_i2c_driver(tas5805m_i2c_driver);
+
+MODULE_AUTHOR("Andy Liu <andy-liu@ti.com>");
+MODULE_AUTHOR("Daniel Beer <daniel.beer@igorinstitute.com>");
+MODULE_DESCRIPTION("TAS5805M Audio Amplifier Driver");
+MODULE_LICENSE("GPL v2");
--
2.30.2
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v3 1/2] ASoC: add support for TAS5805M digital amplifier
@ 2022-01-16 1:55 ` Daniel Beer
0 siblings, 0 replies; 8+ messages in thread
From: Daniel Beer @ 2022-01-16 1:55 UTC (permalink / raw)
To: alsa-devel, devicetree
Cc: Daniel Beer, linux-kernel, Rob Herring, Liam Girdwood, Andy Liu,
Mark Brown, Derek Simkowiak
The Texas Instruments TAS5805M is a class D audio amplifier with an
integrated DSP. DSP configuration is supplied in a firmware image
specified through a device-tree attribute.
These register writes set up application-specific DSP settings and are
expected to be generated using TI's PPC3 tool.
Signed-off-by: Daniel Beer <daniel.beer@igorinstitute.com>
---
sound/soc/codecs/Kconfig | 9 +
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/tas5805m.c | 567 ++++++++++++++++++++++++++++++++++++
3 files changed, 578 insertions(+)
create mode 100644 sound/soc/codecs/tas5805m.c
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index d3e5ae8310ef..d6b8f5cb6ef8 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -1485,6 +1485,15 @@ config SND_SOC_TAS5720
Enable support for Texas Instruments TAS5720L/M high-efficiency mono
Class-D audio power amplifiers.
+config SND_SOC_TAS5805M
+ tristate "Texas Instruments TAS5805M speaker amplifier"
+ depends on I2C
+ help
+ Enable support for Texas Instruments TAS5805M Class-D
+ amplifiers. This is a speaker amplifier with an integrated
+ DSP. DSP configuration for each instance needs to be supplied
+ via a device-tree attribute.
+
config SND_SOC_TAS6424
tristate "Texas Instruments TAS6424 Quad-Channel Audio amplifier"
depends on I2C
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index ac7f20972470..b4e11c3e4a08 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -236,6 +236,7 @@ snd-soc-sti-sas-objs := sti-sas.o
snd-soc-tas5086-objs := tas5086.o
snd-soc-tas571x-objs := tas571x.o
snd-soc-tas5720-objs := tas5720.o
+snd-soc-tas5805m-objs := tas5805m.o
snd-soc-tas6424-objs := tas6424.o
snd-soc-tda7419-objs := tda7419.o
snd-soc-tas2770-objs := tas2770.o
@@ -574,6 +575,7 @@ obj-$(CONFIG_SND_SOC_TAS2764) += snd-soc-tas2764.o
obj-$(CONFIG_SND_SOC_TAS5086) += snd-soc-tas5086.o
obj-$(CONFIG_SND_SOC_TAS571X) += snd-soc-tas571x.o
obj-$(CONFIG_SND_SOC_TAS5720) += snd-soc-tas5720.o
+obj-$(CONFIG_SND_SOC_TAS5805M) += snd-soc-tas5805m.o
obj-$(CONFIG_SND_SOC_TAS6424) += snd-soc-tas6424.o
obj-$(CONFIG_SND_SOC_TDA7419) += snd-soc-tda7419.o
obj-$(CONFIG_SND_SOC_TAS2770) += snd-soc-tas2770.o
diff --git a/sound/soc/codecs/tas5805m.c b/sound/soc/codecs/tas5805m.c
new file mode 100644
index 000000000000..fa0e81ec875a
--- /dev/null
+++ b/sound/soc/codecs/tas5805m.c
@@ -0,0 +1,567 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Driver for the TAS5805M Audio Amplifier
+//
+// Author: Andy Liu <andy-liu@ti.com>
+// Author: Daniel Beer <daniel.beer@igorinstitute.com>
+//
+// This is based on a driver originally written by Andy Liu at TI and
+// posted here:
+//
+// https://e2e.ti.com/support/audio-group/audio/f/audio-forum/722027/linux-tas5825m-linux-drivers
+//
+// It has been simplified a little and reworked for the 5.x ALSA SoC API.
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/firmware.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
+#include <linux/atomic.h>
+#include <linux/workqueue.h>
+
+#include <sound/soc.h>
+#include <sound/pcm.h>
+#include <sound/initval.h>
+
+/* Datasheet-defined registers on page 0, book 0 */
+#define REG_PAGE 0x00
+#define REG_DEVICE_CTRL_1 0x02
+#define REG_DEVICE_CTRL_2 0x03
+#define REG_SIG_CH_CTRL 0x28
+#define REG_SAP_CTRL_1 0x33
+#define REG_FS_MON 0x37
+#define REG_BCK_MON 0x38
+#define REG_CLKDET_STATUS 0x39
+#define REG_VOL_CTL 0x4c
+#define REG_AGAIN 0x54
+#define REG_ADR_PIN_CTRL 0x60
+#define REG_ADR_PIN_CONFIG 0x61
+#define REG_CHAN_FAULT 0x70
+#define REG_GLOBAL_FAULT1 0x71
+#define REG_GLOBAL_FAULT2 0x72
+#define REG_FAULT 0x78
+#define REG_BOOK 0x7f
+
+/* DEVICE_CTRL_2 register values */
+#define DCTRL2_MODE_DEEP_SLEEP 0x00
+#define DCTRL2_MODE_SLEEP 0x01
+#define DCTRL2_MODE_HIZ 0x02
+#define DCTRL2_MODE_PLAY 0x03
+
+#define DCTRL2_MUTE 0x08
+#define DCTRL2_DIS_DSP 0x10
+
+/* This sequence of register writes must always be sent, prior to the
+ * 5ms delay while we wait for the DSP to boot.
+ */
+static const uint8_t dsp_cfg_preboot[] = {
+ 0x00, 0x00, 0x7f, 0x00, 0x03, 0x02, 0x01, 0x11,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x7f, 0x00, 0x03, 0x02,
+};
+
+static const uint32_t tas5805m_volume[] = {
+ 0x0000001B, /* 0, -110dB */ 0x0000001E, /* 1, -109dB */
+ 0x00000021, /* 2, -108dB */ 0x00000025, /* 3, -107dB */
+ 0x0000002A, /* 4, -106dB */ 0x0000002F, /* 5, -105dB */
+ 0x00000035, /* 6, -104dB */ 0x0000003B, /* 7, -103dB */
+ 0x00000043, /* 8, -102dB */ 0x0000004B, /* 9, -101dB */
+ 0x00000054, /* 10, -100dB */ 0x0000005E, /* 11, -99dB */
+ 0x0000006A, /* 12, -98dB */ 0x00000076, /* 13, -97dB */
+ 0x00000085, /* 14, -96dB */ 0x00000095, /* 15, -95dB */
+ 0x000000A7, /* 16, -94dB */ 0x000000BC, /* 17, -93dB */
+ 0x000000D3, /* 18, -92dB */ 0x000000EC, /* 19, -91dB */
+ 0x00000109, /* 20, -90dB */ 0x0000012A, /* 21, -89dB */
+ 0x0000014E, /* 22, -88dB */ 0x00000177, /* 23, -87dB */
+ 0x000001A4, /* 24, -86dB */ 0x000001D8, /* 25, -85dB */
+ 0x00000211, /* 26, -84dB */ 0x00000252, /* 27, -83dB */
+ 0x0000029A, /* 28, -82dB */ 0x000002EC, /* 29, -81dB */
+ 0x00000347, /* 30, -80dB */ 0x000003AD, /* 31, -79dB */
+ 0x00000420, /* 32, -78dB */ 0x000004A1, /* 33, -77dB */
+ 0x00000532, /* 34, -76dB */ 0x000005D4, /* 35, -75dB */
+ 0x0000068A, /* 36, -74dB */ 0x00000756, /* 37, -73dB */
+ 0x0000083B, /* 38, -72dB */ 0x0000093C, /* 39, -71dB */
+ 0x00000A5D, /* 40, -70dB */ 0x00000BA0, /* 41, -69dB */
+ 0x00000D0C, /* 42, -68dB */ 0x00000EA3, /* 43, -67dB */
+ 0x0000106C, /* 44, -66dB */ 0x0000126D, /* 45, -65dB */
+ 0x000014AD, /* 46, -64dB */ 0x00001733, /* 47, -63dB */
+ 0x00001A07, /* 48, -62dB */ 0x00001D34, /* 49, -61dB */
+ 0x000020C5, /* 50, -60dB */ 0x000024C4, /* 51, -59dB */
+ 0x00002941, /* 52, -58dB */ 0x00002E49, /* 53, -57dB */
+ 0x000033EF, /* 54, -56dB */ 0x00003A45, /* 55, -55dB */
+ 0x00004161, /* 56, -54dB */ 0x0000495C, /* 57, -53dB */
+ 0x0000524F, /* 58, -52dB */ 0x00005C5A, /* 59, -51dB */
+ 0x0000679F, /* 60, -50dB */ 0x00007444, /* 61, -49dB */
+ 0x00008274, /* 62, -48dB */ 0x0000925F, /* 63, -47dB */
+ 0x0000A43B, /* 64, -46dB */ 0x0000B845, /* 65, -45dB */
+ 0x0000CEC1, /* 66, -44dB */ 0x0000E7FB, /* 67, -43dB */
+ 0x00010449, /* 68, -42dB */ 0x0001240C, /* 69, -41dB */
+ 0x000147AE, /* 70, -40dB */ 0x00016FAA, /* 71, -39dB */
+ 0x00019C86, /* 72, -38dB */ 0x0001CEDC, /* 73, -37dB */
+ 0x00020756, /* 74, -36dB */ 0x000246B5, /* 75, -35dB */
+ 0x00028DCF, /* 76, -34dB */ 0x0002DD96, /* 77, -33dB */
+ 0x00033718, /* 78, -32dB */ 0x00039B87, /* 79, -31dB */
+ 0x00040C37, /* 80, -30dB */ 0x00048AA7, /* 81, -29dB */
+ 0x00051884, /* 82, -28dB */ 0x0005B7B1, /* 83, -27dB */
+ 0x00066A4A, /* 84, -26dB */ 0x000732AE, /* 85, -25dB */
+ 0x00081385, /* 86, -24dB */ 0x00090FCC, /* 87, -23dB */
+ 0x000A2ADB, /* 88, -22dB */ 0x000B6873, /* 89, -21dB */
+ 0x000CCCCD, /* 90, -20dB */ 0x000E5CA1, /* 91, -19dB */
+ 0x00101D3F, /* 92, -18dB */ 0x0012149A, /* 93, -17dB */
+ 0x00144961, /* 94, -16dB */ 0x0016C311, /* 95, -15dB */
+ 0x00198A13, /* 96, -14dB */ 0x001CA7D7, /* 97, -13dB */
+ 0x002026F3, /* 98, -12dB */ 0x00241347, /* 99, -11dB */
+ 0x00287A27, /* 100, -10dB */ 0x002D6A86, /* 101, -9dB */
+ 0x0032F52D, /* 102, -8dB */ 0x00392CEE, /* 103, -7dB */
+ 0x004026E7, /* 104, -6dB */ 0x0047FACD, /* 105, -5dB */
+ 0x0050C336, /* 106, -4dB */ 0x005A9DF8, /* 107, -3dB */
+ 0x0065AC8C, /* 108, -2dB */ 0x00721483, /* 109, -1dB */
+ 0x00800000, /* 110, 0dB */ 0x008F9E4D, /* 111, 1dB */
+ 0x00A12478, /* 112, 2dB */ 0x00B4CE08, /* 113, 3dB */
+ 0x00CADDC8, /* 114, 4dB */ 0x00E39EA9, /* 115, 5dB */
+ 0x00FF64C1, /* 116, 6dB */ 0x011E8E6A, /* 117, 7dB */
+ 0x0141857F, /* 118, 8dB */ 0x0168C0C6, /* 119, 9dB */
+ 0x0194C584, /* 120, 10dB */ 0x01C62940, /* 121, 11dB */
+ 0x01FD93C2, /* 122, 12dB */ 0x023BC148, /* 123, 13dB */
+ 0x02818508, /* 124, 14dB */ 0x02CFCC01, /* 125, 15dB */
+ 0x0327A01A, /* 126, 16dB */ 0x038A2BAD, /* 127, 17dB */
+ 0x03F8BD7A, /* 128, 18dB */ 0x0474CD1B, /* 129, 19dB */
+ 0x05000000, /* 130, 20dB */ 0x059C2F02, /* 131, 21dB */
+ 0x064B6CAE, /* 132, 22dB */ 0x07100C4D, /* 133, 23dB */
+ 0x07ECA9CD, /* 134, 24dB */ 0x08E43299, /* 135, 25dB */
+ 0x09F9EF8E, /* 136, 26dB */ 0x0B319025, /* 137, 27dB */
+ 0x0C8F36F2, /* 138, 28dB */ 0x0E1787B8, /* 139, 29dB */
+ 0x0FCFB725, /* 140, 30dB */ 0x11BD9C84, /* 141, 31dB */
+ 0x13E7C594, /* 142, 32dB */ 0x16558CCB, /* 143, 33dB */
+ 0x190F3254, /* 144, 34dB */ 0x1C1DF80E, /* 145, 35dB */
+ 0x1F8C4107, /* 146, 36dB */ 0x2365B4BF, /* 147, 37dB */
+ 0x27B766C2, /* 148, 38dB */ 0x2C900313, /* 149, 39dB */
+ 0x32000000, /* 150, 40dB */ 0x3819D612, /* 151, 41dB */
+ 0x3EF23ECA, /* 152, 42dB */ 0x46A07B07, /* 153, 43dB */
+ 0x4F3EA203, /* 154, 44dB */ 0x58E9F9F9, /* 155, 45dB */
+ 0x63C35B8E, /* 156, 46dB */ 0x6FEFA16D, /* 157, 47dB */
+ 0x7D982575, /* 158, 48dB */
+};
+
+#define TAS5805M_VOLUME_MAX ((int)ARRAY_SIZE(tas5805m_volume) - 1)
+#define TAS5805M_VOLUME_MIN 0
+
+struct tas5805m_priv {
+ struct regulator *pvdd;
+ struct gpio_desc *gpio_pdn_n;
+
+ uint8_t *dsp_cfg_data;
+ int dsp_cfg_len;
+
+ struct regmap *regmap;
+
+ int vol[2];
+ bool is_powered;
+ bool is_muted;
+};
+
+static void set_dsp_scale(struct regmap *rm, int offset, int vol)
+{
+ uint8_t v[4];
+ uint32_t x = tas5805m_volume[vol];
+ int i;
+
+ for (i = 0; i < 4; i++) {
+ v[3 - i] = x;
+ x >>= 8;
+ }
+
+ regmap_bulk_write(rm, offset, v, ARRAY_SIZE(v));
+}
+
+static void tas5805m_refresh(struct snd_soc_component *component)
+{
+ struct tas5805m_priv *tas5805m =
+ snd_soc_component_get_drvdata(component);
+ struct regmap *rm = tas5805m->regmap;
+
+ dev_dbg(component->dev, "refresh: is_muted=%d, vol=%d/%d\n",
+ tas5805m->is_muted, tas5805m->vol[0], tas5805m->vol[1]);
+
+ regmap_write(rm, REG_PAGE, 0x00);
+ regmap_write(rm, REG_BOOK, 0x8c);
+ regmap_write(rm, REG_PAGE, 0x2a);
+
+ /* Refresh volume. The actual volume control documented in the
+ * datasheet doesn't seem to work correctly. This is a pair of
+ * DSP registers which are *not* documented in the datasheet.
+ */
+ set_dsp_scale(rm, 0x24, tas5805m->vol[0]);
+ set_dsp_scale(rm, 0x28, tas5805m->vol[1]);
+
+ /* Set/clear digital soft-mute */
+ regmap_write(rm, REG_DEVICE_CTRL_2,
+ (tas5805m->is_muted ? DCTRL2_MUTE : 0) |
+ DCTRL2_MODE_PLAY);
+}
+
+static int tas5805m_vol_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 2;
+
+ uinfo->value.integer.min = TAS5805M_VOLUME_MIN;
+ uinfo->value.integer.max = TAS5805M_VOLUME_MAX;
+ return 0;
+}
+
+static int tas5805m_vol_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component =
+ snd_soc_kcontrol_component(kcontrol);
+ struct tas5805m_priv *tas5805m =
+ snd_soc_component_get_drvdata(component);
+
+ ucontrol->value.integer.value[0] = tas5805m->vol[0];
+ ucontrol->value.integer.value[1] = tas5805m->vol[1];
+ return 0;
+}
+
+static inline int volume_is_valid(int v)
+{
+ return (v >= TAS5805M_VOLUME_MIN) && (v <= TAS5805M_VOLUME_MAX);
+}
+
+static int tas5805m_vol_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component =
+ snd_soc_kcontrol_component(kcontrol);
+ struct tas5805m_priv *tas5805m =
+ snd_soc_component_get_drvdata(component);
+
+ if (!(volume_is_valid(ucontrol->value.integer.value[0]) &&
+ volume_is_valid(ucontrol->value.integer.value[1])))
+ return -EINVAL;
+
+ if (tas5805m->vol[0] != ucontrol->value.integer.value[0] ||
+ tas5805m->vol[1] != ucontrol->value.integer.value[1]) {
+ tas5805m->vol[0] = ucontrol->value.integer.value[0];
+ tas5805m->vol[1] = ucontrol->value.integer.value[1];
+ dev_dbg(component->dev, "set vol=%d/%d (is_powered=%d)\n",
+ tas5805m->vol[0], tas5805m->vol[1],
+ tas5805m->is_powered);
+ if (tas5805m->is_powered)
+ tas5805m_refresh(component);
+ return 1;
+ }
+
+ return 0;
+}
+
+static const struct snd_kcontrol_new tas5805m_snd_controls[] = {
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Master Playback Volume",
+ .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |
+ SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .info = tas5805m_vol_info,
+ .get = tas5805m_vol_get,
+ .put = tas5805m_vol_put,
+ },
+};
+
+static void send_cfg(struct regmap *rm,
+ const uint8_t *s, unsigned int len)
+{
+ unsigned int i;
+
+ for (i = 0; i + 1 < len; i += 2)
+ regmap_write(rm, s[i], s[i + 1]);
+}
+
+/* The TAS5805M DSP can't be configured until the I2S clock has been
+ * present and stable for 5ms, or else it won't boot and we get no
+ * sound.
+ */
+static int tas5805m_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct tas5805m_priv *tas5805m =
+ snd_soc_component_get_drvdata(component);
+ struct regmap *rm = tas5805m->regmap;
+ unsigned int chan, global1, global2;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ dev_dbg(component->dev, "DSP startup\n");
+
+ /* We mustn't issue any I2C transactions until the I2S
+ * clock is stable. Furthermore, we must allow a 5ms
+ * delay after the first set of register writes to
+ * allow the DSP to boot before configuring it.
+ */
+ usleep_range(5000, 10000);
+ send_cfg(rm, dsp_cfg_preboot,
+ ARRAY_SIZE(dsp_cfg_preboot));
+ usleep_range(5000, 15000);
+ send_cfg(rm, tas5805m->dsp_cfg_data,
+ tas5805m->dsp_cfg_len);
+
+ tas5805m->is_powered = true;
+ tas5805m_refresh(component);
+ break;
+
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ dev_dbg(component->dev, "DSP shutdown\n");
+
+ tas5805m->is_powered = false;
+
+ regmap_write(rm, REG_PAGE, 0x00);
+ regmap_write(rm, REG_BOOK, 0x00);
+
+ regmap_read(rm, REG_CHAN_FAULT, &chan);
+ regmap_read(rm, REG_GLOBAL_FAULT1, &global1);
+ regmap_read(rm, REG_GLOBAL_FAULT2, &global2);
+
+ dev_dbg(component->dev,
+ "fault regs: CHAN=%02x, GLOBAL1=%02x, GLOBAL2=%02x\n",
+ chan, global1, global2);
+
+ regmap_write(rm, REG_DEVICE_CTRL_2, DCTRL2_MODE_HIZ);
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static const struct snd_soc_dapm_route tas5805m_audio_map[] = {
+ { "DAC", NULL, "DAC IN" },
+ { "OUT", NULL, "DAC" },
+};
+
+static const struct snd_soc_dapm_widget tas5805m_dapm_widgets[] = {
+ SND_SOC_DAPM_AIF_IN("DAC IN", "Playback", 0, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_OUTPUT("OUT")
+};
+
+static const struct snd_soc_component_driver soc_codec_dev_tas5805m = {
+ .controls = tas5805m_snd_controls,
+ .num_controls = ARRAY_SIZE(tas5805m_snd_controls),
+ .dapm_widgets = tas5805m_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(tas5805m_dapm_widgets),
+ .dapm_routes = tas5805m_audio_map,
+ .num_dapm_routes = ARRAY_SIZE(tas5805m_audio_map),
+ .use_pmdown_time = 1,
+ .endianness = 1,
+ .non_legacy_dai_naming = 1,
+};
+
+static int tas5805m_mute(struct snd_soc_dai *dai, int mute, int direction)
+{
+ struct snd_soc_component *component = dai->component;
+ struct tas5805m_priv *tas5805m =
+ snd_soc_component_get_drvdata(component);
+
+ dev_dbg(component->dev, "set mute=%d (is_powered=%d)\n",
+ mute, tas5805m->is_powered);
+ tas5805m->is_muted = mute;
+ if (tas5805m->is_powered)
+ tas5805m_refresh(component);
+
+ return 0;
+}
+
+static const struct snd_soc_dai_ops tas5805m_dai_ops = {
+ .trigger = tas5805m_trigger,
+ .mute_stream = tas5805m_mute,
+ .no_capture_mute = 1,
+};
+
+static struct snd_soc_dai_driver tas5805m_dai = {
+ .name = "tas5805m-amplifier",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_48000,
+ .formats = SNDRV_PCM_FMTBIT_S32_LE,
+ },
+ .ops = &tas5805m_dai_ops,
+};
+
+static const struct regmap_config tas5805m_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ /* We have quite a lot of multi-level bank switching and a
+ * relatively small number of register writes between bank
+ * switches.
+ */
+ .cache_type = REGCACHE_NONE,
+};
+
+static int tas5805m_i2c_probe(struct i2c_client *i2c)
+{
+ struct device *dev = &i2c->dev;
+ struct regmap *regmap;
+ struct tas5805m_priv *tas5805m;
+ char filename[128];
+ const char *config_name;
+ const struct firmware *fw;
+ int ret;
+
+ regmap = devm_regmap_init_i2c(i2c, &tas5805m_regmap);
+ if (IS_ERR(regmap)) {
+ ret = PTR_ERR(regmap);
+ dev_err(dev, "unable to allocate register map: %d\n", ret);
+ return ret;
+ }
+
+ tas5805m = devm_kzalloc(dev, sizeof(struct tas5805m_priv), GFP_KERNEL);
+ if (!tas5805m)
+ return -ENOMEM;
+
+ tas5805m->pvdd = devm_regulator_get(dev, "pvdd");
+ if (IS_ERR(tas5805m->pvdd)) {
+ dev_err(dev, "failed to get pvdd supply: %ld\n",
+ PTR_ERR(tas5805m->pvdd));
+ return PTR_ERR(tas5805m->pvdd);
+ }
+
+ dev_set_drvdata(dev, tas5805m);
+ tas5805m->regmap = regmap;
+ tas5805m->gpio_pdn_n = devm_gpiod_get(dev, "pdn", GPIOD_OUT_LOW);
+ if (IS_ERR(tas5805m->gpio_pdn_n)) {
+ dev_err(dev, "error requesting PDN gpio: %ld\n",
+ PTR_ERR(tas5805m->gpio_pdn_n));
+ return PTR_ERR(tas5805m->gpio_pdn_n);
+ }
+
+ /* This configuration must be generated by PPC3. The file loaded
+ * consists of a sequence of register writes, where bytes at
+ * even indices are register addresses and those at odd indices
+ * are register values.
+ *
+ * The fixed portion of PPC3's output prior to the 5ms delay
+ * should be omitted.
+ */
+ if (device_property_read_string(dev, "ti,dsp-config-name",
+ &config_name))
+ config_name = "default";
+
+ snprintf(filename, sizeof(filename), "tas5805m_dsp_%s.bin",
+ config_name);
+ ret = request_firmware(&fw, filename, dev);
+ if (ret)
+ return ret;
+
+ if ((fw->size < 2) || (fw->size & 1)) {
+ dev_err(dev, "firmware is invalid\n");
+ release_firmware(fw);
+ return -EINVAL;
+ }
+
+ tas5805m->dsp_cfg_len = fw->size;
+ tas5805m->dsp_cfg_data = devm_kmalloc(dev, fw->size, GFP_KERNEL);
+ if (!tas5805m->dsp_cfg_data) {
+ release_firmware(fw);
+ return -ENOMEM;
+ }
+ memcpy(tas5805m->dsp_cfg_data, fw->data, fw->size);
+
+ release_firmware(fw);
+
+ /* Do the first part of the power-on here, while we can expect
+ * the I2S interface to be quiet. We must raise PDN# and then
+ * wait 5ms before any I2S clock is sent, or else the internal
+ * regulator apparently won't come on.
+ *
+ * Also, we must keep the device in power down for 100ms or so
+ * after PVDD is applied, or else the ADR pin is sampled
+ * incorrectly and the device comes up with an unpredictable I2C
+ * address.
+ */
+ tas5805m->vol[0] = TAS5805M_VOLUME_MIN;
+ tas5805m->vol[1] = TAS5805M_VOLUME_MIN;
+
+ ret = regulator_enable(tas5805m->pvdd);
+ if (ret < 0) {
+ dev_err(dev, "failed to enable pvdd: %d\n", ret);
+ return ret;
+ }
+
+ usleep_range(100000, 150000);
+ gpiod_set_value(tas5805m->gpio_pdn_n, 1);
+ usleep_range(10000, 15000);
+
+ /* Don't register through devm. We need to be able to unregister
+ * the component prior to deasserting PDN#
+ */
+ ret = snd_soc_register_component(dev, &soc_codec_dev_tas5805m,
+ &tas5805m_dai, 1);
+ if (ret < 0) {
+ dev_err(dev, "unable to register codec: %d\n", ret);
+ gpiod_set_value(tas5805m->gpio_pdn_n, 0);
+ regulator_disable(tas5805m->pvdd);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int tas5805m_i2c_remove(struct i2c_client *i2c)
+{
+ struct device *dev = &i2c->dev;
+ struct tas5805m_priv *tas5805m = dev_get_drvdata(dev);
+
+ snd_soc_unregister_component(dev);
+ gpiod_set_value(tas5805m->gpio_pdn_n, 0);
+ usleep_range(10000, 15000);
+ regulator_disable(tas5805m->pvdd);
+ return 0;
+}
+
+static const struct i2c_device_id tas5805m_i2c_id[] = {
+ { "tas5805m", },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, tas5805m_i2c_id);
+
+#if IS_ENABLED(CONFIG_OF)
+static const struct of_device_id tas5805m_of_match[] = {
+ { .compatible = "ti,tas5805m", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, tas5805m_of_match);
+#endif
+
+static struct i2c_driver tas5805m_i2c_driver = {
+ .probe_new = tas5805m_i2c_probe,
+ .remove = tas5805m_i2c_remove,
+ .id_table = tas5805m_i2c_id,
+ .driver = {
+ .name = "tas5805m",
+ .of_match_table = of_match_ptr(tas5805m_of_match),
+ },
+};
+
+module_i2c_driver(tas5805m_i2c_driver);
+
+MODULE_AUTHOR("Andy Liu <andy-liu@ti.com>");
+MODULE_AUTHOR("Daniel Beer <daniel.beer@igorinstitute.com>");
+MODULE_DESCRIPTION("TAS5805M Audio Amplifier Driver");
+MODULE_LICENSE("GPL v2");
--
2.30.2
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v3 2/2] ASoC: dt-bindings: add bindings for TI TAS5805M.
2022-01-16 1:58 ` Daniel Beer
@ 2022-01-16 1:56 ` Daniel Beer
-1 siblings, 0 replies; 8+ messages in thread
From: Daniel Beer @ 2022-01-16 1:56 UTC (permalink / raw)
To: alsa-devel, devicetree
Cc: linux-kernel, Andy Liu, Daniel Beer, Derek Simkowiak, Mark Brown,
Rob Herring, Liam Girdwood
The TAS5805M is a class D speaker amplifier with integrated DSP.
Configuration must be generated by TI's PPC3 tool and supplied as a
firmware image.
Signed-off-by: Daniel Beer <daniel.beer@igorinstitute.com>
---
.../devicetree/bindings/sound/tas5805m.yaml | 56 +++++++++++++++++++
1 file changed, 56 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/tas5805m.yaml
diff --git a/Documentation/devicetree/bindings/sound/tas5805m.yaml b/Documentation/devicetree/bindings/sound/tas5805m.yaml
new file mode 100644
index 000000000000..3aade02d8a96
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/tas5805m.yaml
@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/tas5805m.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TAS5805M audio amplifier
+
+maintainers:
+ - Daniel Beer <daniel.beer@igorinstitute.com>
+
+description: |
+ The TAS5805M is a class D audio amplifier with a built-in DSP.
+
+properties:
+ compatible:
+ enum:
+ - ti,tas5805m
+
+ reg:
+ maxItems: 1
+ description: |
+ I2C address of the amplifier. See the datasheet for possible values.
+
+ pvdd-supply:
+ description: |
+ Regulator for audio power supply (PVDD in the datasheet).
+
+ pdn-gpios:
+ description: |
+ Power-down control GPIO (PDN pin in the datasheet).
+
+ ti,dsp-config-name:
+ description: |
+ The name of the DSP configuration that should be loaded for this
+ instance. Configuration blobs are sequences of register writes
+ generated from TI's PPC3 tool.
+ $ref: /schemas/types.yaml#/definitions/string
+
+examples:
+ - |
+ i2c0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ tas5805m: tas5805m@2c {
+ reg = <0x2c>;
+ compatible = "ti,tas5805m";
+
+ pvdd-supply = <&audiopwr>;
+ pdn-gpios = <&tlmm 160 0>;
+
+ ti,dsp-config-name = "mono_pbtl_48khz";
+ };
+ };
+
+additionalProperties: true
--
2.30.2
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v3 2/2] ASoC: dt-bindings: add bindings for TI TAS5805M.
@ 2022-01-16 1:56 ` Daniel Beer
0 siblings, 0 replies; 8+ messages in thread
From: Daniel Beer @ 2022-01-16 1:56 UTC (permalink / raw)
To: alsa-devel, devicetree
Cc: Daniel Beer, linux-kernel, Rob Herring, Liam Girdwood, Andy Liu,
Mark Brown, Derek Simkowiak
The TAS5805M is a class D speaker amplifier with integrated DSP.
Configuration must be generated by TI's PPC3 tool and supplied as a
firmware image.
Signed-off-by: Daniel Beer <daniel.beer@igorinstitute.com>
---
.../devicetree/bindings/sound/tas5805m.yaml | 56 +++++++++++++++++++
1 file changed, 56 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/tas5805m.yaml
diff --git a/Documentation/devicetree/bindings/sound/tas5805m.yaml b/Documentation/devicetree/bindings/sound/tas5805m.yaml
new file mode 100644
index 000000000000..3aade02d8a96
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/tas5805m.yaml
@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/tas5805m.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TAS5805M audio amplifier
+
+maintainers:
+ - Daniel Beer <daniel.beer@igorinstitute.com>
+
+description: |
+ The TAS5805M is a class D audio amplifier with a built-in DSP.
+
+properties:
+ compatible:
+ enum:
+ - ti,tas5805m
+
+ reg:
+ maxItems: 1
+ description: |
+ I2C address of the amplifier. See the datasheet for possible values.
+
+ pvdd-supply:
+ description: |
+ Regulator for audio power supply (PVDD in the datasheet).
+
+ pdn-gpios:
+ description: |
+ Power-down control GPIO (PDN pin in the datasheet).
+
+ ti,dsp-config-name:
+ description: |
+ The name of the DSP configuration that should be loaded for this
+ instance. Configuration blobs are sequences of register writes
+ generated from TI's PPC3 tool.
+ $ref: /schemas/types.yaml#/definitions/string
+
+examples:
+ - |
+ i2c0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ tas5805m: tas5805m@2c {
+ reg = <0x2c>;
+ compatible = "ti,tas5805m";
+
+ pvdd-supply = <&audiopwr>;
+ pdn-gpios = <&tlmm 160 0>;
+
+ ti,dsp-config-name = "mono_pbtl_48khz";
+ };
+ };
+
+additionalProperties: true
--
2.30.2
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v3 0/2] ASoC: add support for TAS5805M digital amplifier
@ 2022-01-16 1:58 ` Daniel Beer
0 siblings, 0 replies; 8+ messages in thread
From: Daniel Beer @ 2022-01-16 1:58 UTC (permalink / raw)
To: alsa-devel, devicetree
Cc: linux-kernel, Andy Liu, Daniel Beer, Derek Simkowiak, Mark Brown,
Rob Herring, Liam Girdwood
This pair of patches implements support for the TAS5805M class D audio
amplifier. This driver, and the example configuration in the device-tree
file, were originally based on a 4.19 series kernel and have been
modified slightly from the tested version.
This resubmission differs from v2 as follows:
- The redundant mutex has been removed
- DSP configuration is loaded as a firmware image, rather than
directly from the device-tree
- The volume control returns non-zero when the values have changed, as
required
- Some corrections to device-tree example
Daniel Beer (2):
ASoC: add support for TAS5805M digital amplifier
ASoC: dt-bindings: add bindings for TI TAS5805M.
.../devicetree/bindings/sound/tas5805m.yaml | 56 ++
sound/soc/codecs/Kconfig | 9 +
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/tas5805m.c | 567 ++++++++++++++++++
4 files changed, 634 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/tas5805m.yaml
create mode 100644 sound/soc/codecs/tas5805m.c
--
2.30.2
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH v3 0/2] ASoC: add support for TAS5805M digital amplifier
@ 2022-01-16 1:58 ` Daniel Beer
0 siblings, 0 replies; 8+ messages in thread
From: Daniel Beer @ 2022-01-16 1:58 UTC (permalink / raw)
To: alsa-devel, devicetree
Cc: Daniel Beer, linux-kernel, Rob Herring, Liam Girdwood, Andy Liu,
Mark Brown, Derek Simkowiak
This pair of patches implements support for the TAS5805M class D audio
amplifier. This driver, and the example configuration in the device-tree
file, were originally based on a 4.19 series kernel and have been
modified slightly from the tested version.
This resubmission differs from v2 as follows:
- The redundant mutex has been removed
- DSP configuration is loaded as a firmware image, rather than
directly from the device-tree
- The volume control returns non-zero when the values have changed, as
required
- Some corrections to device-tree example
Daniel Beer (2):
ASoC: add support for TAS5805M digital amplifier
ASoC: dt-bindings: add bindings for TI TAS5805M.
.../devicetree/bindings/sound/tas5805m.yaml | 56 ++
sound/soc/codecs/Kconfig | 9 +
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/tas5805m.c | 567 ++++++++++++++++++
4 files changed, 634 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/tas5805m.yaml
create mode 100644 sound/soc/codecs/tas5805m.c
--
2.30.2
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH v3 0/2] ASoC: add support for TAS5805M digital amplifier
2022-01-16 1:58 ` Daniel Beer
@ 2022-01-25 10:20 ` Mark Brown
-1 siblings, 0 replies; 8+ messages in thread
From: Mark Brown @ 2022-01-25 10:20 UTC (permalink / raw)
To: alsa-devel, Daniel Beer, devicetree
Cc: Derek Simkowiak, Andy Liu, Rob Herring, Liam Girdwood, linux-kernel
On Sun, 16 Jan 2022 14:58:56 +1300, Daniel Beer wrote:
> This pair of patches implements support for the TAS5805M class D audio
> amplifier. This driver, and the example configuration in the device-tree
> file, were originally based on a 4.19 series kernel and have been
> modified slightly from the tested version.
>
> This resubmission differs from v2 as follows:
>
> [...]
Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
Thanks!
[1/2] ASoC: add support for TAS5805M digital amplifier
commit: 2e5a74c68d601b11a496f91f76fa7bb236d10bd0
[2/2] ASoC: dt-bindings: add bindings for TI TAS5805M.
commit: b8aec7a4a01b75973c22f004377a48593a3fef03
All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying
to this mail.
Thanks,
Mark
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH v3 0/2] ASoC: add support for TAS5805M digital amplifier
@ 2022-01-25 10:20 ` Mark Brown
0 siblings, 0 replies; 8+ messages in thread
From: Mark Brown @ 2022-01-25 10:20 UTC (permalink / raw)
To: alsa-devel, Daniel Beer, devicetree
Cc: Liam Girdwood, Rob Herring, Derek Simkowiak, Andy Liu, linux-kernel
On Sun, 16 Jan 2022 14:58:56 +1300, Daniel Beer wrote:
> This pair of patches implements support for the TAS5805M class D audio
> amplifier. This driver, and the example configuration in the device-tree
> file, were originally based on a 4.19 series kernel and have been
> modified slightly from the tested version.
>
> This resubmission differs from v2 as follows:
>
> [...]
Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
Thanks!
[1/2] ASoC: add support for TAS5805M digital amplifier
commit: 2e5a74c68d601b11a496f91f76fa7bb236d10bd0
[2/2] ASoC: dt-bindings: add bindings for TI TAS5805M.
commit: b8aec7a4a01b75973c22f004377a48593a3fef03
All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying
to this mail.
Thanks,
Mark
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2022-01-25 10:24 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-01-16 1:58 [PATCH v3 0/2] ASoC: add support for TAS5805M digital amplifier Daniel Beer
2022-01-16 1:58 ` Daniel Beer
2022-01-16 1:55 ` [PATCH v3 1/2] " Daniel Beer
2022-01-16 1:55 ` Daniel Beer
2022-01-16 1:56 ` [PATCH v3 2/2] ASoC: dt-bindings: add bindings for TI TAS5805M Daniel Beer
2022-01-16 1:56 ` Daniel Beer
2022-01-25 10:20 ` [PATCH v3 0/2] ASoC: add support for TAS5805M digital amplifier Mark Brown
2022-01-25 10:20 ` Mark Brown
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