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linux/sound/soc/codecs/tas5805m.c
Uwe Kleine-König ed5c2f5fd1 i2c: Make remove callback return void 
The value returned by an i2c driver's remove function is mostly ignored.
(Only an error message is printed if the value is non-zero that the
error is ignored.)

So change the prototype of the remove function to return no value. This
way driver authors are not tempted to assume that passing an error to
the upper layer is a good idea. All drivers are adapted accordingly.
There is no intended change of behaviour, all callbacks were prepared to
return 0 before.

Reviewed-by: Peter Senna Tschudin <peter.senna@gmail.com>
Reviewed-by: Jeremy Kerr <jk@codeconstruct.com.au>
Reviewed-by: Benjamin Mugnier <benjamin.mugnier@foss.st.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Crt Mori <cmo@melexis.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Marek Behún <kabel@kernel.org> # for leds-turris-omnia
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Petr Machata <petrm@nvidia.com> # for mlxsw
Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com> # for surface3_power
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> # for bmc150-accel-i2c + kxcjk-1013
Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> # for media/* + staging/media/*
Acked-by: Miguel Ojeda <ojeda@kernel.org> # for auxdisplay/ht16k33 + auxdisplay/lcd2s
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com> # for versaclock5
Reviewed-by: Ajay Gupta <ajayg@nvidia.com> # for ucsi_ccg
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # for iio
Acked-by: Peter Rosin <peda@axentia.se> # for i2c-mux-*, max9860
Acked-by: Adrien Grassein <adrien.grassein@gmail.com> # for lontium-lt8912b
Reviewed-by: Jean Delvare <jdelvare@suse.de> # for hwmon, i2c-core and i2c/muxes
Acked-by: Corey Minyard <cminyard@mvista.com> # for IPMI
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com> # for drivers/power
Acked-by: Krzysztof Hałasa <khalasa@piap.pl>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
2022-08-16 12:46:26 +02:00

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// 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,
};
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 void 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);
}
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");
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