January 2022 - Alsa-devel - mailman.alsa-project.org

[PATCH 1/2] ASoC: add support for TAS5805M digital amplifier
by Daniel Beer 12 Jan '22

12 Jan '22

The Texas Instruments TAS5805M is a class D audio amplifier with an integrated DSP. DSP configuration is expected to be supplied via a device-tree attribute. See the bindings file for more details. Signed-off-by: Daniel Beer <daniel.beer(a)igorinstitute.com> --- sound/soc/codecs/Kconfig | 9 + sound/soc/codecs/Makefile | 2 + sound/soc/codecs/tas5805m.c | 534 ++++++++++++++++++++++++++++++++++++ 3 files changed, 545 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..efbdff0f5180 --- /dev/null +++ b/sound/soc/codecs/tas5805m.c @@ -0,0 +1,534 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Driver for the TAS5805M Audio Amplifier + * + * Author: Andy Liu <andy-liu(a)ti.com> + * Author: Daniel Beer <daniel.beer(a)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-tas… + * + * 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/slab.h> +#include <linux/of.h> +#include <linux/init.h> +#include <linux/i2c.h> +#include <linux/regmap.h> +#include <linux/gpio.h> +#include <linux/of_gpio.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> + +#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 + +/* 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; + int gpio_pdn_n; + + uint8_t *dsp_cfg_data; + int dsp_cfg_len; + + struct snd_soc_component *component; + struct regmap *regmap; + struct mutex lock; + + int vol; + bool is_powered; + bool is_muted; +}; + +static void tas5805m_refresh_unlocked(struct snd_soc_component *component) +{ + struct tas5805m_priv *tas5805m = + snd_soc_component_get_drvdata(component); + uint8_t v[4]; + unsigned int i; + uint32_t x; + + dev_dbg(component->dev, "refresh: is_muted=%d, vol=%d\n", + tas5805m->is_muted, tas5805m->vol); + + x = tas5805m_volume[tas5805m->vol]; + for (i = 0; i < 4; i++) { + v[3 - i] = x; + x >>= 8; + } + + snd_soc_component_write(component, REG_PAGE, 0x00); + snd_soc_component_write(component, REG_BOOK, 0x8c); + snd_soc_component_write(component, REG_PAGE, 0x2a); + + for (i = 0; i < 4; i++) + snd_soc_component_write(component, 0x24 + i, v[i]); + for (i = 0; i < 4; i++) + snd_soc_component_write(component, 0x28 + i, v[i]); + + /* Volume controls */ + snd_soc_component_write(component, REG_DEVICE_CTRL_2, + tas5805m->is_muted ? 0x0b : 0x03); +} + +static int tas5805m_vol_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 1; + + 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); + + mutex_lock(&tas5805m->lock); + ucontrol->value.integer.value[0] = tas5805m->vol; + mutex_unlock(&tas5805m->lock); + + return 0; +} + +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); + + mutex_lock(&tas5805m->lock); + tas5805m->vol = clamp((int)ucontrol->value.integer.value[0], + TAS5805M_VOLUME_MIN, TAS5805M_VOLUME_MAX); + dev_dbg(component->dev, "set vol=%d (is_powered=%d)\n", + tas5805m->vol, tas5805m->is_powered); + if (tas5805m->is_powered) + tas5805m_refresh_unlocked(component); + mutex_unlock(&tas5805m->lock); + + 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, + }, +}; + +/* This must not run until after the I2S clocks (BCLK, LRCLK) are up and + * stable. + */ +static void send_cfg(struct snd_soc_component *component, + const uint8_t *s, unsigned int len) +{ + unsigned int i; + + for (i = 0; i + 1 < len; i += 2) + snd_soc_component_write(component, s[i], s[i + 1]); +} + +/* The TAS5805M can't be configured or brought out of power-down without + * an I2S clock. In power-down, registers are reset. + * + * We rely on DAPM not powering up the DAC widget until the source for + * it is ready, which we think implies that the I2S clock is present and + * stable. + */ +static int tas5805m_dac_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); + struct tas5805m_priv *tas5805m = + snd_soc_component_get_drvdata(component); + + if (event & SND_SOC_DAPM_POST_PMU) { + dev_dbg(component->dev, "SND_SOC_DAPM_POST_PMU\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. + */ + mutex_lock(&tas5805m->lock); + usleep_range(5000, 10000); + send_cfg(component, dsp_cfg_preboot, + ARRAY_SIZE(dsp_cfg_preboot)); + usleep_range(5000, 15000); + send_cfg(component, tas5805m->dsp_cfg_data, + tas5805m->dsp_cfg_len); + + tas5805m->is_powered = true; + tas5805m_refresh_unlocked(component); + mutex_unlock(&tas5805m->lock); + } else if (event & SND_SOC_DAPM_PRE_PMD) { + unsigned int chan, global1, global2; + + dev_dbg(component->dev, "SND_SOC_DAPM_PRE_PMD\n"); + mutex_lock(&tas5805m->lock); + tas5805m->is_powered = false; + + snd_soc_component_write(component, REG_PAGE, 0x00); + snd_soc_component_write(component, REG_BOOK, 0x00); + + chan = snd_soc_component_read(component, REG_CHAN_FAULT); + global1 = snd_soc_component_read(component, REG_GLOBAL_FAULT1); + global2 = snd_soc_component_read(component, REG_GLOBAL_FAULT2); + + dev_dbg(component->dev, + "fault regs: CHAN=%02x, GLOBAL1=%02x, GLOBAL2=%02x\n", + chan, global1, global2); + + snd_soc_component_write(component, REG_DEVICE_CTRL_2, + 0x02); /* Hi-Z mode */ + mutex_unlock(&tas5805m->lock); + } + + return 0; +} + +static int tas5805m_probe(struct snd_soc_component *component) +{ + struct tas5805m_priv *tas5805m = + snd_soc_component_get_drvdata(component); + + tas5805m->component = component; + 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_E("DAC", NULL, SND_SOC_NOPM, 0, 0, + tas5805m_dac_event, + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), + SND_SOC_DAPM_OUTPUT("OUT") +}; + +static const struct snd_soc_component_driver soc_codec_dev_tas5805m = { + .probe = tas5805m_probe, + .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); + + mutex_lock(&tas5805m->lock); + 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_unlocked(component); + mutex_unlock(&tas5805m->lock); + + return 0; +} + +static const struct snd_soc_dai_ops tas5805m_dai_ops = { + .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; + 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 = of_get_named_gpio(dev->of_node, "pdn-gpio", 0); + if (!gpio_is_valid(tas5805m->gpio_pdn_n)) { + dev_err(dev, "power-down GPIO not specified\n"); + return -EINVAL; + } + + tas5805m->dsp_cfg_len = of_property_count_elems_of_size(dev->of_node, + "ti,dsp-config", 1); + if (tas5805m->dsp_cfg_len < 0) { + dev_err(dev, "no DSP config provided\n"); + return tas5805m->dsp_cfg_len; + } + + tas5805m->dsp_cfg_data = devm_kmalloc(dev, tas5805m->dsp_cfg_len, + GFP_KERNEL); + if (!tas5805m->dsp_cfg_data) + return -ENOMEM; + + of_property_read_u8_array(dev->of_node, "ti,dsp-config", + tas5805m->dsp_cfg_data, tas5805m->dsp_cfg_len); + dev_dbg(dev, "%d bytes of DSP config loaded\n", + tas5805m->dsp_cfg_len); + + ret = devm_gpio_request(dev, tas5805m->gpio_pdn_n, + "TAS5805M power-down"); + if (ret < 0) { + dev_err(dev, + "unable to request power-down GPIO: %d\n", ret); + return ret; + } + + /* 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. + */ + gpio_direction_output(tas5805m->gpio_pdn_n, 0); + tas5805m->vol = TAS5805M_VOLUME_MIN; + mutex_init(&tas5805m->lock); + + ret = devm_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); + return ret; + } + + ret = regulator_enable(tas5805m->pvdd); + if (ret < 0) { + dev_err(dev, "failed to enable pvdd: %d\n", ret); + return ret; + } + + usleep_range(100000, 150000); + gpio_set_value(tas5805m->gpio_pdn_n, 1); + usleep_range(10000, 15000); + + return 0; +} + +static int tas5805m_i2c_remove(struct i2c_client *i2c) +{ + struct tas5805m_priv *tas5805m = dev_get_drvdata(&i2c->dev); + + gpio_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(a)ti.com>"); +MODULE_AUTHOR("Daniel Beer <daniel.beer(a)igorinstitute.com>"); +MODULE_DESCRIPTION("TAS5805M Audio Amplifier Driver"); +MODULE_LICENSE("GPL v2"); -- 2.30.2

2 3

[PATCH v2 0/1] firmware: mtk: add adsp ipc protocol for sof
by allen-kh.cheng 12 Jan '22

12 Jan '22

From: Allen-KH Cheng <Allen-KH.Cheng(a)mediatek.com> This patch provides mtk adsp ipc support for sof. ADSP IPC protocol offers (send/recv) interfaces using mediatek-mailbox APIs. changes since v1: - add comments for mtk_adsp_ipc_send and mtk_adsp_ipc_recv - remove unuseful MODULE_LICENSE - change label name to out_free Allen-KH Cheng (1): firmware: mediatek: add adsp ipc protocol interface drivers/firmware/Kconfig | 1 + drivers/firmware/Makefile | 1 + drivers/firmware/mediatek/Kconfig | 9 + drivers/firmware/mediatek/Makefile | 2 + drivers/firmware/mediatek/mtk-adsp-ipc.c | 159 ++++++++++++++++++ .../linux/firmware/mediatek/mtk-adsp-ipc.h | 65 +++++++ 6 files changed, 237 insertions(+) create mode 100644 drivers/firmware/mediatek/Kconfig create mode 100644 drivers/firmware/mediatek/Makefile create mode 100644 drivers/firmware/mediatek/mtk-adsp-ipc.c create mode 100644 include/linux/firmware/mediatek/mtk-adsp-ipc.h -- 2.18.0

3 3

[PATCH] ASoC: cpcap: Check for NULL pointer after calling of_get_child_by_name
by Jiasheng Jiang 12 Jan '22

12 Jan '22

If the device does not exist, of_get_child_by_name() will return NULL pointer. And devm_snd_soc_register_component() does not check it. Also, I have noticed that cpcap_codec_driver has not been used yet. Therefore, it should be better to check it in order to avoid the future dereference of the NULL pointer. Fixes: f6cdf2d3445d ("ASoC: cpcap: new codec") Signed-off-by: Jiasheng Jiang <jiasheng(a)iscas.ac.cn> --- sound/soc/codecs/cpcap.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/soc/codecs/cpcap.c b/sound/soc/codecs/cpcap.c index 05bbacd0d174..f1c13f42e1c1 100644 --- a/sound/soc/codecs/cpcap.c +++ b/sound/soc/codecs/cpcap.c @@ -1667,6 +1667,8 @@ static int cpcap_codec_probe(struct platform_device *pdev) { struct device_node *codec_node = of_get_child_by_name(pdev->dev.parent->of_node, "audio-codec"); + if (!codec_node) + return -ENODEV; pdev->dev.of_node = codec_node; -- 2.25.1

2 1

[PATCH v12 0/2] This patches provide ADSP MBOX support for MT8195
by allen-kh.cheng 12 Jan '22

12 Jan '22

From: Allen-KH Cheng <Allen-KH.Cheng(a)mediatek.com> Mediatek ADSP IPC is used to send notification or short message between processors with dsp.· It will place the message to the share buffer and will access the ADSP mailbox registers to kick dsp. Two mailboxes used to send notification or short message between processors with dsp changes since v11: - remove unuseful MODULE_LICENSE changes since v10: - split up v9 into two separate submissions https://patchwork.kernel.org/project/linux-mediatek/patch/20220111071011.59… changes since v9: - rename adsp_mbox_chan_ops to mtk_adsp_mbox_chan_ops changes since v8: - remove struct adsp_mbox_ch_info - add get_mtk_adsp_mbox_priv - use mtk_adsp_mbox_priv va_mboxreg address in adsp mbox driver - add struct mtk_adsp_mbox_cfg for DSP mbox register offset - remove adsp mbox register offset hard code define - remove mtk-adsp-ipc.h reference in adsp mbox driver changes since v7: - add mtk prefix for adsp ipc functions - rename adsp_mbox_ch_info to mtk_adsp_mbox_ch_info - remove incorrect reviewers in commit message changes since v6: - dt-bindings: change example dtsi node. - rename config MTK_ADSP_IPC_MBOX to MTK_ADSP_MBOX - remove unused variable - add reviewers changes since v5: - remove some redundant code changes since v4: - use switch ... case in adsp_ipc_recv - add error handling path for chan_name pointer - refine some code to be concise changes since v3: - reorder MTK_ADSP_IPC_MBOX config - remove some redundant code - remove lock in mtk-adsp-mailbox changes since v2: - separate adsp_mailbox into two instances changes since v1: - fix dt_binding_check error Allen-KH Cheng (2): dt-bindings: mediatek: add adsp-mbox document mailbox: mediatek: add support for adsp mailbox controller .../bindings/mailbox/mtk,adsp-mbox.yaml | 52 ++++++ drivers/mailbox/Kconfig | 7 + drivers/mailbox/Makefile | 2 + drivers/mailbox/mtk-adsp-mailbox.c | 175 ++++++++++++++++++ 4 files changed, 236 insertions(+) create mode 100644 Documentation/devicetree/bindings/mailbox/mtk,adsp-mbox.yaml create mode 100644 drivers/mailbox/mtk-adsp-mailbox.c -- 2.18.0

1 2

[PATCH v11 0/2] This patches provide ADSP IPC support for MT8195
by allen-kh.cheng 12 Jan '22

12 Jan '22

From: Allen-KH Cheng <Allen-KH.Cheng(a)mediatek.com> Mediatek ADSP IPC is used to send notification or short message between processors with dsp.· It will place the message to the share buffer and will access the ADSP mailbox registers to kick dsp. Two mailboxes used to send notification or short message between processors with dsp changes since v10: - split up v9 into two separate submissions https://patchwork.kernel.org/project/linux-mediatek/patch/20220111071011.59… changes since v9: - rename adsp_mbox_chan_ops to mtk_adsp_mbox_chan_ops changes since v8: - remove struct adsp_mbox_ch_info - add get_mtk_adsp_mbox_priv - use mtk_adsp_mbox_priv va_mboxreg address in adsp mbox driver - add struct mtk_adsp_mbox_cfg for DSP mbox register offset - remove adsp mbox register offset hard code define - remove mtk-adsp-ipc.h reference in adsp mbox driver changes since v7: - add mtk prefix for adsp ipc functions - rename adsp_mbox_ch_info to mtk_adsp_mbox_ch_info - remove incorrect reviewers in commit message changes since v6: - dt-bindings: change example dtsi node. - rename config MTK_ADSP_IPC_MBOX to MTK_ADSP_MBOX - remove unused variable - add reviewers changes since v5: - remove some redundant code changes since v4: - use switch ... case in adsp_ipc_recv - add error handling path for chan_name pointer - refine some code to be concise changes since v3: - reorder MTK_ADSP_IPC_MBOX config - remove some redundant code - remove lock in mtk-adsp-mailbox changes since v2: - separate adsp_mailbox into two instances changes since v1: - fix dt_binding_check error Allen-KH Cheng (2): dt-bindings: mediatek: add adsp-mbox document mailbox: mediatek: add support for adsp mailbox controller .../bindings/mailbox/mtk,adsp-mbox.yaml | 52 ++++++ drivers/mailbox/Kconfig | 7 + drivers/mailbox/Makefile | 2 + drivers/mailbox/mtk-adsp-mailbox.c | 176 ++++++++++++++++++ 4 files changed, 237 insertions(+) create mode 100644 Documentation/devicetree/bindings/mailbox/mtk,adsp-mbox.yaml create mode 100644 drivers/mailbox/mtk-adsp-mailbox.c -- 2.18.0

1 2

[PATCH] firmware: mediatek: add adsp ipc protocol interface
by allen-kh.cheng 12 Jan '22

12 Jan '22

From: Allen-KH Cheng <Allen-KH.Cheng(a)mediatek.com> Some of mediatek processors contain the Tensilica HiFix DSP for audio processing. The communication between Host CPU and DSP firmware is taking place using a shared memory area for message passing. ADSP IPC protocol offers (send/recv) interfaces using mediatek-mailbox APIs. We use two mbox channels to implement a request-reply protocol. Reviewed-by: Tzung-Bi Shih <tzungbi(a)google.com> Signed-off-by: Allen-KH Cheng <Allen-KH.Cheng(a)mediatek.com> --- drivers/firmware/Kconfig | 1 + drivers/firmware/Makefile | 1 + drivers/firmware/mediatek/Kconfig | 9 ++ drivers/firmware/mediatek/Makefile | 2 + drivers/firmware/mediatek/mtk-adsp-ipc.c | 137 ++++++++++++++++++ .../linux/firmware/mediatek/mtk-adsp-ipc.h | 65 +++++++++ 6 files changed, 215 insertions(+) create mode 100644 drivers/firmware/mediatek/Kconfig create mode 100644 drivers/firmware/mediatek/Makefile create mode 100644 drivers/firmware/mediatek/mtk-adsp-ipc.c create mode 100644 include/linux/firmware/mediatek/mtk-adsp-ipc.h diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig index 75cb91055c17..f3578c60cff0 100644 --- a/drivers/firmware/Kconfig +++ b/drivers/firmware/Kconfig @@ -299,6 +299,7 @@ source "drivers/firmware/cirrus/Kconfig" source "drivers/firmware/google/Kconfig" source "drivers/firmware/efi/Kconfig" source "drivers/firmware/imx/Kconfig" +source "drivers/firmware/mediatek/Kconfig" source "drivers/firmware/meson/Kconfig" source "drivers/firmware/psci/Kconfig" source "drivers/firmware/smccc/Kconfig" diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile index 4e58cb474a68..88fbdc110100 100644 --- a/drivers/firmware/Makefile +++ b/drivers/firmware/Makefile @@ -34,6 +34,7 @@ obj-$(CONFIG_GOOGLE_FIRMWARE) += google/ obj-$(CONFIG_EFI) += efi/ obj-$(CONFIG_UEFI_CPER) += efi/ obj-y += imx/ +obj-y += mediatek/ obj-y += psci/ obj-y += smccc/ obj-y += tegra/ diff --git a/drivers/firmware/mediatek/Kconfig b/drivers/firmware/mediatek/Kconfig new file mode 100644 index 000000000000..6d1e580b967b --- /dev/null +++ b/drivers/firmware/mediatek/Kconfig @@ -0,0 +1,9 @@ +# SPDX-License-Identifier: GPL-2.0-only +config MTK_ADSP_IPC + tristate "MTK ADSP IPC Protocol driver" + depends on MTK_ADSP_MBOX + help + Say yes here to add support for the MediaTek ADSP IPC + between host AP (Linux) and the firmware running on ADSP. + ADSP exists on some mtk processors. + Client might use shared memory to exchange information with ADSP side. diff --git a/drivers/firmware/mediatek/Makefile b/drivers/firmware/mediatek/Makefile new file mode 100644 index 000000000000..4e840b65650d --- /dev/null +++ b/drivers/firmware/mediatek/Makefile @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0 +obj-$(CONFIG_MTK_ADSP_IPC) += mtk-adsp-ipc.o diff --git a/drivers/firmware/mediatek/mtk-adsp-ipc.c b/drivers/firmware/mediatek/mtk-adsp-ipc.c new file mode 100644 index 000000000000..b45f16cec063 --- /dev/null +++ b/drivers/firmware/mediatek/mtk-adsp-ipc.c @@ -0,0 +1,137 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2022 MediaTek Corporation. All rights reserved. + * Author: Allen-KH Cheng <allen-kh.cheng(a)mediatek.com> + */ + +#include <linux/firmware/mediatek/mtk-adsp-ipc.h> +#include <linux/kernel.h> +#include <linux/mailbox_client.h> +#include <linux/module.h> +#include <linux/of_platform.h> +#include <linux/platform_device.h> +#include <linux/slab.h> + +int mtk_adsp_ipc_send(struct mtk_adsp_ipc *ipc, unsigned int idx, uint32_t msg) +{ + struct mtk_adsp_chan *dsp_chan; + int ret; + + if (idx >= MTK_ADSP_MBOX_NUM) + return -EINVAL; + + dsp_chan = &ipc->chans[idx]; + ret = mbox_send_message(dsp_chan->ch, &msg); + if (ret < 0) + return ret; + + return 0; +} +EXPORT_SYMBOL(mtk_adsp_ipc_send); + +static void mtk_adsp_ipc_recv(struct mbox_client *c, void *msg) +{ + struct mtk_adsp_chan *chan = container_of(c, struct mtk_adsp_chan, cl); + struct device *dev = c->dev; + + switch (chan->idx) { + case MTK_ADSP_MBOX_REPLY: + chan->ipc->ops->handle_reply(chan->ipc); + break; + case MTK_ADSP_MBOX_REQUEST: + chan->ipc->ops->handle_request(chan->ipc); + break; + default: + dev_err(dev, "Wrong mbox chan %d \n", chan->idx); + break; + } +} + +static int mtk_adsp_ipc_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct mtk_adsp_ipc *dsp_ipc; + struct mtk_adsp_chan *dsp_chan; + struct mbox_client *cl; + char *chan_name; + int ret; + int i, j; + + device_set_of_node_from_dev(&pdev->dev, pdev->dev.parent); + + dsp_ipc = devm_kzalloc(dev, sizeof(*dsp_ipc), GFP_KERNEL); + if (!dsp_ipc) + return -ENOMEM; + + for (i = 0; i < MTK_ADSP_MBOX_NUM; i++) { + chan_name = kasprintf(GFP_KERNEL, "mbox%d", i); + if (!chan_name) { + ret = -ENOMEM; + goto out; + } + + dsp_chan = &dsp_ipc->chans[i]; + cl = &dsp_chan->cl; + cl->dev = dev->parent; + cl->tx_block = false; + cl->knows_txdone = false; + cl->tx_prepare = NULL; + cl->rx_callback = mtk_adsp_ipc_recv; + + dsp_chan->ipc = dsp_ipc; + dsp_chan->idx = i; + dsp_chan->ch = mbox_request_channel_byname(cl, chan_name); + if (IS_ERR(dsp_chan->ch)) { + ret = PTR_ERR(dsp_chan->ch); + if (ret != -EPROBE_DEFER) + dev_err(dev, "Failed to request mbox chan %d ret %d\n", + i, ret); + goto out; + } + + dev_dbg(dev, "request mbox chan %s\n", chan_name); + kfree(chan_name); + } + + dsp_ipc->dev = dev; + dev_set_drvdata(dev, dsp_ipc); + dev_dbg(dev, "MTK ADSP IPC initialized\n"); + + return 0; + +out: + kfree(chan_name); + for (j = 0; j < i; j++) { + dsp_chan = &dsp_ipc->chans[j]; + mbox_free_channel(dsp_chan->ch); + } + + return ret; +} + +static int mtk_adsp_ipc_remove(struct platform_device *pdev) +{ + struct mtk_adsp_ipc *dsp_ipc = dev_get_drvdata(&pdev->dev); + struct mtk_adsp_chan *dsp_chan; + int i; + + for (i = 0; i < MTK_ADSP_MBOX_NUM; i++) { + dsp_chan = &dsp_ipc->chans[i]; + mbox_free_channel(dsp_chan->ch); + } + + return 0; +} + +static struct platform_driver mtk_adsp_ipc_driver = { + .driver = { + .name = "mtk-adsp-ipc", + }, + .probe = mtk_adsp_ipc_probe, + .remove = mtk_adsp_ipc_remove, +}; +builtin_platform_driver(mtk_adsp_ipc_driver); + +MODULE_AUTHOR("Allen-KH Cheng <allen-kh.cheng(a)mediatek.com>"); +MODULE_DESCRIPTION("MTK ADSP IPC Driver"); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/firmware/mediatek/mtk-adsp-ipc.h b/include/linux/firmware/mediatek/mtk-adsp-ipc.h new file mode 100644 index 000000000000..08e3c7d3b405 --- /dev/null +++ b/include/linux/firmware/mediatek/mtk-adsp-ipc.h @@ -0,0 +1,65 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2021 MediaTek Inc. + */ + +#ifndef MTK_ADSP_IPC_H +#define MTK_ADSP_IPC_H + +#include <linux/device.h> +#include <linux/types.h> +#include <linux/mailbox_controller.h> +#include <linux/mailbox_client.h> + +#define MTK_ADSP_IPC_REQ 0 +#define MTK_ADSP_IPC_RSP 1 +#define MTK_ADSP_IPC_OP_REQ 0x1 +#define MTK_ADSP_IPC_OP_RSP 0x2 + +enum { + MTK_ADSP_MBOX_REPLY, + MTK_ADSP_MBOX_REQUEST, + MTK_ADSP_MBOX_NUM, +}; + +struct mtk_adsp_ipc; + +struct mtk_adsp_ipc_ops { + void (*handle_reply)(struct mtk_adsp_ipc *ipc); + void (*handle_request)(struct mtk_adsp_ipc *ipc); +}; + +struct mtk_adsp_chan { + struct mtk_adsp_ipc *ipc; + struct mbox_client cl; + struct mbox_chan *ch; + char *name; + int idx; +}; + +struct mtk_adsp_ipc { + struct mtk_adsp_chan chans[MTK_ADSP_MBOX_NUM]; + struct device *dev; + struct mtk_adsp_ipc_ops *ops; + void *private_data; +}; + +static inline void mtk_adsp_ipc_set_data(struct mtk_adsp_ipc *ipc, void *data) +{ + if (!ipc) + return; + + ipc->private_data = data; +} + +static inline void *mtk_adsp_ipc_get_data(struct mtk_adsp_ipc *ipc) +{ + if (!ipc) + return NULL; + + return ipc->private_data; +} + +int mtk_adsp_ipc_send(struct mtk_adsp_ipc *ipc, unsigned int idx, uint32_t op); + +#endif /* MTK_ADSP_IPC_H */ -- 2.18.0

1 0

[PATCH 0/3] ASoC: topology: Fixes
by Amadeusz Sławiński 12 Jan '22

12 Jan '22

Following series performs few cleanups in topology code. First patch reduces number of prints we get from failure. Second allos TLV controls to be either read or write which should be possible as evidenced by further code in function. Last one cleanups after refactoring of memory handling. Amadeusz Sławiński (3): ASoC: topology: Remove superfluous error prints ASoC: topology: Allow TLV control to be either read or write ASoC: topology: Optimize soc_tplg_dapm_graph_elems_load behavior sound/soc/soc-topology.c | 103 ++++++++++----------------------------- 1 file changed, 27 insertions(+), 76 deletions(-) -- 2.25.1

2 6

[PATCH 0/3] firewire: assist unit driver to compute packet timestamp
by Takashi Sakamoto 12 Jan '22

12 Jan '22

Hi, In 1394 OHCI specification, each descriptor of IR/IT/AR/AT DMA context has timeStamp field. The value of timeStamp field express the time in which the controller accept packet. The resolution of value is isochronous cycle count (8,000 Hz) with second up to 7. I have a plan to use the value of timeStamp field for ALSA firewire stack so that userspace ALSA PCM/Rawmidi applications can get converted timestamp (ktime) for PCM frame/MIDI message. The timestamp can ideally express finer granularity than the time to invoke IRQ handler (and co). Current implementation of Linux FireWire subsystem delivers the value of timeStamp field to unit driver for IR/IT/AT DMA context, but not for AR DMA context. Additionally, the way to refer to Isochronous Cycle Timer Register in MMIO region of 1394 OHCI controller is transaction to local node. It includes overhead of transaction and it's preferable to add less-overhead way available in any type of IRQ context. This patchset adds two functions exposed in kernel space: * fw_card_read_cycle_time() * allow unit driver to access to CYCLE_TIME register in MMIO region without initiate transaction * fw_request_get_timestamp() * allow unit driver to get timestamp of request packet inner request handler I note that Hector Martin found kernel null pointer dereference during process to remove PCI card and has posted a patch: * https://lore.kernel.org/lkml/20211027113130.8802-1-marcan@marcan.st/ His patch is included in the series with my comment for relevant commit 20802224298c ("firewire: core: add forgotten dummy driver methods, remove unused ones"). The patch is required since unit driver can refer to dummy driver between removal callback of PCI subsystem and removal callback of FireWire subsystem. Hector Martin (1): firewire: Add dummy read_csr/write_csr functions Takashi Sakamoto (2): firewire: add kernel API to access CYCLE_TIME register firewire: add kernel API to access packet structure in request structure for AR context drivers/firewire/core-card.c | 39 +++++++++++++++++++++++++++++ drivers/firewire/core-cdev.c | 6 +++-- drivers/firewire/core-transaction.c | 18 +++++++++++++ include/linux/firewire.h | 3 +++ 4 files changed, 64 insertions(+), 2 deletions(-) -- 2.32.0

2 7

[PATCH] dt-bindings: Drop required 'interrupt-parent'
by Rob Herring 11 Jan '22

11 Jan '22

'interrupt-parent' is never required as it can be in a parent node or a parent node itself can be an interrupt provider. Where exactly it lives is outside the scope of a binding schema. Signed-off-by: Rob Herring <robh(a)kernel.org> --- .../devicetree/bindings/gpio/toshiba,gpio-visconti.yaml | 1 - .../devicetree/bindings/mailbox/ti,omap-mailbox.yaml | 9 --------- Documentation/devicetree/bindings/mfd/cirrus,madera.yaml | 1 - .../devicetree/bindings/net/lantiq,etop-xway.yaml | 1 - .../devicetree/bindings/net/lantiq,xrx200-net.yaml | 1 - .../devicetree/bindings/pci/sifive,fu740-pcie.yaml | 1 - .../devicetree/bindings/pci/xilinx-versal-cpm.yaml | 1 - 7 files changed, 15 deletions(-) diff --git a/Documentation/devicetree/bindings/gpio/toshiba,gpio-visconti.yaml b/Documentation/devicetree/bindings/gpio/toshiba,gpio-visconti.yaml index 9ad470e01953..b085450b527f 100644 --- a/Documentation/devicetree/bindings/gpio/toshiba,gpio-visconti.yaml +++ b/Documentation/devicetree/bindings/gpio/toshiba,gpio-visconti.yaml @@ -43,7 +43,6 @@ required: - gpio-controller - interrupt-controller - "#interrupt-cells" - - interrupt-parent additionalProperties: false diff --git a/Documentation/devicetree/bindings/mailbox/ti,omap-mailbox.yaml b/Documentation/devicetree/bindings/mailbox/ti,omap-mailbox.yaml index e864d798168d..d433e496ec6e 100644 --- a/Documentation/devicetree/bindings/mailbox/ti,omap-mailbox.yaml +++ b/Documentation/devicetree/bindings/mailbox/ti,omap-mailbox.yaml @@ -175,15 +175,6 @@ required: - ti,mbox-num-fifos allOf: - - if: - properties: - compatible: - enum: - - ti,am654-mailbox - then: - required: - - interrupt-parent - - if: properties: compatible: diff --git a/Documentation/devicetree/bindings/mfd/cirrus,madera.yaml b/Documentation/devicetree/bindings/mfd/cirrus,madera.yaml index 499c62c04daa..5dce62a7eff2 100644 --- a/Documentation/devicetree/bindings/mfd/cirrus,madera.yaml +++ b/Documentation/devicetree/bindings/mfd/cirrus,madera.yaml @@ -221,7 +221,6 @@ required: - '#gpio-cells' - interrupt-controller - '#interrupt-cells' - - interrupt-parent - interrupts - AVDD-supply - DBVDD1-supply diff --git a/Documentation/devicetree/bindings/net/lantiq,etop-xway.yaml b/Documentation/devicetree/bindings/net/lantiq,etop-xway.yaml index 437502c5ca96..3ce9f9a16baf 100644 --- a/Documentation/devicetree/bindings/net/lantiq,etop-xway.yaml +++ b/Documentation/devicetree/bindings/net/lantiq,etop-xway.yaml @@ -46,7 +46,6 @@ properties: required: - compatible - reg - - interrupt-parent - interrupts - interrupt-names - lantiq,tx-burst-length diff --git a/Documentation/devicetree/bindings/net/lantiq,xrx200-net.yaml b/Documentation/devicetree/bindings/net/lantiq,xrx200-net.yaml index 7bc074a42369..5bc1a21ca579 100644 --- a/Documentation/devicetree/bindings/net/lantiq,xrx200-net.yaml +++ b/Documentation/devicetree/bindings/net/lantiq,xrx200-net.yaml @@ -38,7 +38,6 @@ properties: required: - compatible - reg - - interrupt-parent - interrupts - interrupt-names - "#address-cells" diff --git a/Documentation/devicetree/bindings/pci/sifive,fu740-pcie.yaml b/Documentation/devicetree/bindings/pci/sifive,fu740-pcie.yaml index 2b9d1d6fc661..72c78f4ec269 100644 --- a/Documentation/devicetree/bindings/pci/sifive,fu740-pcie.yaml +++ b/Documentation/devicetree/bindings/pci/sifive,fu740-pcie.yaml @@ -61,7 +61,6 @@ required: - num-lanes - interrupts - interrupt-names - - interrupt-parent - interrupt-map-mask - interrupt-map - clock-names diff --git a/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml b/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml index a2bbc0eb7220..32f4641085bc 100644 --- a/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml +++ b/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml @@ -55,7 +55,6 @@ required: - reg-names - "#interrupt-cells" - interrupts - - interrupt-parent - interrupt-map - interrupt-map-mask - bus-range -- 2.32.0

4 7

[PATCH] firmware: mediatek: add adsp ipc protocol interface
by allen-kh.cheng 11 Jan '22

11 Jan '22

From: Allen-KH Cheng <Allen-KH.Cheng(a)mediatek.com> Some of mediatek processors contain the Tensilica HiFix DSP for audio processing. The communication between Host CPU and DSP firmware is taking place using a shared memory area for message passing. ADSP IPC protocol offers (send/recv) interfaces using mediatek-mailbox APIs. We use two mbox channels to implement a request-reply protocol. Reviewed-by: Tzung-Bi Shih <tzungbi(a)google.com> Signed-off-by: Allen-KH Cheng <Allen-KH.Cheng(a)mediatek.com> --- drivers/firmware/Kconfig | 1 + drivers/firmware/Makefile | 1 + drivers/firmware/mediatek/Kconfig | 9 ++ drivers/firmware/mediatek/Makefile | 2 + drivers/firmware/mediatek/mtk-adsp-ipc.c | 137 ++++++++++++++++++ .../linux/firmware/mediatek/mtk-adsp-ipc.h | 65 +++++++++ 6 files changed, 215 insertions(+) create mode 100644 drivers/firmware/mediatek/Kconfig create mode 100644 drivers/firmware/mediatek/Makefile create mode 100644 drivers/firmware/mediatek/mtk-adsp-ipc.c create mode 100644 include/linux/firmware/mediatek/mtk-adsp-ipc.h diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig index 75cb91055c17..f3578c60cff0 100644 --- a/drivers/firmware/Kconfig +++ b/drivers/firmware/Kconfig @@ -299,6 +299,7 @@ source "drivers/firmware/cirrus/Kconfig" source "drivers/firmware/google/Kconfig" source "drivers/firmware/efi/Kconfig" source "drivers/firmware/imx/Kconfig" +source "drivers/firmware/mediatek/Kconfig" source "drivers/firmware/meson/Kconfig" source "drivers/firmware/psci/Kconfig" source "drivers/firmware/smccc/Kconfig" diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile index 4e58cb474a68..88fbdc110100 100644 --- a/drivers/firmware/Makefile +++ b/drivers/firmware/Makefile @@ -34,6 +34,7 @@ obj-$(CONFIG_GOOGLE_FIRMWARE) += google/ obj-$(CONFIG_EFI) += efi/ obj-$(CONFIG_UEFI_CPER) += efi/ obj-y += imx/ +obj-y += mediatek/ obj-y += psci/ obj-y += smccc/ obj-y += tegra/ diff --git a/drivers/firmware/mediatek/Kconfig b/drivers/firmware/mediatek/Kconfig new file mode 100644 index 000000000000..6d1e580b967b --- /dev/null +++ b/drivers/firmware/mediatek/Kconfig @@ -0,0 +1,9 @@ +# SPDX-License-Identifier: GPL-2.0-only +config MTK_ADSP_IPC + tristate "MTK ADSP IPC Protocol driver" + depends on MTK_ADSP_MBOX + help + Say yes here to add support for the MediaTek ADSP IPC + between host AP (Linux) and the firmware running on ADSP. + ADSP exists on some mtk processors. + Client might use shared memory to exchange information with ADSP side. diff --git a/drivers/firmware/mediatek/Makefile b/drivers/firmware/mediatek/Makefile new file mode 100644 index 000000000000..4e840b65650d --- /dev/null +++ b/drivers/firmware/mediatek/Makefile @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0 +obj-$(CONFIG_MTK_ADSP_IPC) += mtk-adsp-ipc.o diff --git a/drivers/firmware/mediatek/mtk-adsp-ipc.c b/drivers/firmware/mediatek/mtk-adsp-ipc.c new file mode 100644 index 000000000000..b45f16cec063 --- /dev/null +++ b/drivers/firmware/mediatek/mtk-adsp-ipc.c @@ -0,0 +1,137 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2022 MediaTek Corporation. All rights reserved. + * Author: Allen-KH Cheng <allen-kh.cheng(a)mediatek.com> + */ + +#include <linux/firmware/mediatek/mtk-adsp-ipc.h> +#include <linux/kernel.h> +#include <linux/mailbox_client.h> +#include <linux/module.h> +#include <linux/of_platform.h> +#include <linux/platform_device.h> +#include <linux/slab.h> + +int mtk_adsp_ipc_send(struct mtk_adsp_ipc *ipc, unsigned int idx, uint32_t msg) +{ + struct mtk_adsp_chan *dsp_chan; + int ret; + + if (idx >= MTK_ADSP_MBOX_NUM) + return -EINVAL; + + dsp_chan = &ipc->chans[idx]; + ret = mbox_send_message(dsp_chan->ch, &msg); + if (ret < 0) + return ret; + + return 0; +} +EXPORT_SYMBOL(mtk_adsp_ipc_send); + +static void mtk_adsp_ipc_recv(struct mbox_client *c, void *msg) +{ + struct mtk_adsp_chan *chan = container_of(c, struct mtk_adsp_chan, cl); + struct device *dev = c->dev; + + switch (chan->idx) { + case MTK_ADSP_MBOX_REPLY: + chan->ipc->ops->handle_reply(chan->ipc); + break; + case MTK_ADSP_MBOX_REQUEST: + chan->ipc->ops->handle_request(chan->ipc); + break; + default: + dev_err(dev, "Wrong mbox chan %d \n", chan->idx); + break; + } +} + +static int mtk_adsp_ipc_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct mtk_adsp_ipc *dsp_ipc; + struct mtk_adsp_chan *dsp_chan; + struct mbox_client *cl; + char *chan_name; + int ret; + int i, j; + + device_set_of_node_from_dev(&pdev->dev, pdev->dev.parent); + + dsp_ipc = devm_kzalloc(dev, sizeof(*dsp_ipc), GFP_KERNEL); + if (!dsp_ipc) + return -ENOMEM; + + for (i = 0; i < MTK_ADSP_MBOX_NUM; i++) { + chan_name = kasprintf(GFP_KERNEL, "mbox%d", i); + if (!chan_name) { + ret = -ENOMEM; + goto out; + } + + dsp_chan = &dsp_ipc->chans[i]; + cl = &dsp_chan->cl; + cl->dev = dev->parent; + cl->tx_block = false; + cl->knows_txdone = false; + cl->tx_prepare = NULL; + cl->rx_callback = mtk_adsp_ipc_recv; + + dsp_chan->ipc = dsp_ipc; + dsp_chan->idx = i; + dsp_chan->ch = mbox_request_channel_byname(cl, chan_name); + if (IS_ERR(dsp_chan->ch)) { + ret = PTR_ERR(dsp_chan->ch); + if (ret != -EPROBE_DEFER) + dev_err(dev, "Failed to request mbox chan %d ret %d\n", + i, ret); + goto out; + } + + dev_dbg(dev, "request mbox chan %s\n", chan_name); + kfree(chan_name); + } + + dsp_ipc->dev = dev; + dev_set_drvdata(dev, dsp_ipc); + dev_dbg(dev, "MTK ADSP IPC initialized\n"); + + return 0; + +out: + kfree(chan_name); + for (j = 0; j < i; j++) { + dsp_chan = &dsp_ipc->chans[j]; + mbox_free_channel(dsp_chan->ch); + } + + return ret; +} + +static int mtk_adsp_ipc_remove(struct platform_device *pdev) +{ + struct mtk_adsp_ipc *dsp_ipc = dev_get_drvdata(&pdev->dev); + struct mtk_adsp_chan *dsp_chan; + int i; + + for (i = 0; i < MTK_ADSP_MBOX_NUM; i++) { + dsp_chan = &dsp_ipc->chans[i]; + mbox_free_channel(dsp_chan->ch); + } + + return 0; +} + +static struct platform_driver mtk_adsp_ipc_driver = { + .driver = { + .name = "mtk-adsp-ipc", + }, + .probe = mtk_adsp_ipc_probe, + .remove = mtk_adsp_ipc_remove, +}; +builtin_platform_driver(mtk_adsp_ipc_driver); + +MODULE_AUTHOR("Allen-KH Cheng <allen-kh.cheng(a)mediatek.com>"); +MODULE_DESCRIPTION("MTK ADSP IPC Driver"); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/firmware/mediatek/mtk-adsp-ipc.h b/include/linux/firmware/mediatek/mtk-adsp-ipc.h new file mode 100644 index 000000000000..08e3c7d3b405 --- /dev/null +++ b/include/linux/firmware/mediatek/mtk-adsp-ipc.h @@ -0,0 +1,65 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2021 MediaTek Inc. + */ + +#ifndef MTK_ADSP_IPC_H +#define MTK_ADSP_IPC_H + +#include <linux/device.h> +#include <linux/types.h> +#include <linux/mailbox_controller.h> +#include <linux/mailbox_client.h> + +#define MTK_ADSP_IPC_REQ 0 +#define MTK_ADSP_IPC_RSP 1 +#define MTK_ADSP_IPC_OP_REQ 0x1 +#define MTK_ADSP_IPC_OP_RSP 0x2 + +enum { + MTK_ADSP_MBOX_REPLY, + MTK_ADSP_MBOX_REQUEST, + MTK_ADSP_MBOX_NUM, +}; + +struct mtk_adsp_ipc; + +struct mtk_adsp_ipc_ops { + void (*handle_reply)(struct mtk_adsp_ipc *ipc); + void (*handle_request)(struct mtk_adsp_ipc *ipc); +}; + +struct mtk_adsp_chan { + struct mtk_adsp_ipc *ipc; + struct mbox_client cl; + struct mbox_chan *ch; + char *name; + int idx; +}; + +struct mtk_adsp_ipc { + struct mtk_adsp_chan chans[MTK_ADSP_MBOX_NUM]; + struct device *dev; + struct mtk_adsp_ipc_ops *ops; + void *private_data; +}; + +static inline void mtk_adsp_ipc_set_data(struct mtk_adsp_ipc *ipc, void *data) +{ + if (!ipc) + return; + + ipc->private_data = data; +} + +static inline void *mtk_adsp_ipc_get_data(struct mtk_adsp_ipc *ipc) +{ + if (!ipc) + return NULL; + + return ipc->private_data; +} + +int mtk_adsp_ipc_send(struct mtk_adsp_ipc *ipc, unsigned int idx, uint32_t op); + +#endif /* MTK_ADSP_IPC_H */ -- 2.18.0

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