TI中文支持网Part Number:TAS5760LOther Parts Discussed in Thread: TAS5825M
TAS5760L how do I configure the volume through the IIC, and why does the volume remain unchanged after configuring the 0X03 address?
Daniel：
您好
https://www.ti2k.com/wp-content/uploads/ti2k/DeyiSupport_音频_2685946
https://www.ti2k.com/wp-content/uploads/ti2k/DeyiSupport_音频_tas5825m-amplifier-over-current-fault-register—not-able-to-reset—no-sound
这两个帖子都有详细说明，请您参考。
,
ZGD ZGD：
Hi ,How to adjust the volume through the IIC configuration
,
Daniel：
您好
/* * Driver for the TAS5825M Audio Amplifier * * Author: Andy Liu <andy-liu@ti.com> * Author: Dario Murgia <dario.murgia@alumni.uniroma2.eu> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. */
#include <linux/module.h>#include <linux/moduleparam.h>#include <linux/slab.h>#include <linux/of.h>#include <linux/init.h>#include <linux/i2c.h>#include <linux/regmap.h>
#include <sound/soc.h>#include <sound/pcm.h>#include <sound/initval.h>
#include "tas5825m.h"
#define TAS5825M_DRV_NAME "tas5825m"
#define TAS5825M_RATES (SNDRV_PCM_RATE_48000)#define TAS5825M_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
#define TAS5825M_REG_00 (0x00)#define TAS5825M_REG_03 (0x03)#define TAS5825M_REG_0C (0x0c)#define TAS5825M_REG_0D (0x0d)#define TAS5825M_REG_0E (0x0e)#define TAS5825M_REG_0F (0x0f)#define TAS5825M_REG_10 (0x10)#define TAS5825M_REG_11 (0x11)#define TAS5825M_REG_12 (0x12)#define TAS5825M_REG_13 (0x13)#define TAS5825M_REG_35 (0x35)#define TAS5825M_REG_7F (0x7f)
#define TAS5825M_PAGE_00 (0x00)#define TAS5825M_PAGE_0B (0x0b)
#define TAS5825M_BOOK_00 (0x00)#define TAS5825M_BOOK_8C (0x8c)
#define TAS5825M_VOLUME_MAX (110) //158#define TAS5825M_VOLUME_MIN (40) //0
const uint32_t tas5825m_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};
struct tas5825m_priv { struct regmap *regmap;
struct mutex lock;
int vol;};
const struct regmap_config tas5825m_regmap = { .reg_bits = 8, .val_bits = 8, .cache_type = REGCACHE_RBTREE,};
static int tas5825m_vol_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo){ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; uinfo->access = (SNDRV_CTL_ELEM_ACCESS_TLV_READ | SNDRV_CTL_ELEM_ACCESS_READWRITE); uinfo->count = 1;
uinfo->value.integer.min = TAS5825M_VOLUME_MIN; uinfo->value.integer.max = TAS5825M_VOLUME_MAX; uinfo->value.integer.step = 1;
return 0;}
static int tas5825m_vol_locked_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol){ struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); struct tas5825m_priv *tas5825m = snd_soc_codec_get_drvdata(codec);
mutex_lock(&tas5825m->lock); ucontrol->value.integer.value[0] = tas5825m->vol; mutex_unlock(&tas5825m->lock);
return 0;}
static inline int get_volume_index(int vol){ int index; index = vol;
if (index < TAS5825M_VOLUME_MIN) index = TAS5825M_VOLUME_MIN;
if (index > TAS5825M_VOLUME_MAX) index = TAS5825M_VOLUME_MAX;
return index;}
static void tas5825m_set_volume(struct snd_soc_codec *codec, int vol){ unsigned int index; uint32_t volume_hex; uint8_t byte4; uint8_t byte3; uint8_t byte2; uint8_t byte1;
index = get_volume_index(vol); volume_hex = tas5825m_volume[index];
byte4 = ((volume_hex >> 24) & 0xFF); byte3 = ((volume_hex >> 16) & 0xFF); byte2 = ((volume_hex >> 8) & 0xFF); byte1 = ((volume_hex >> 0) & 0xFF);
snd_soc_write(codec, TAS5825M_REG_00, TAS5825M_PAGE_00); snd_soc_write(codec, TAS5825M_REG_7F, TAS5825M_BOOK_8C); snd_soc_write(codec, TAS5825M_REG_00, TAS5825M_PAGE_0B); snd_soc_write(codec, TAS5825M_REG_0C, byte4); snd_soc_write(codec, TAS5825M_REG_0D, byte3); snd_soc_write(codec, TAS5825M_REG_0E, byte2); snd_soc_write(codec, TAS5825M_REG_0F, byte1); snd_soc_write(codec, TAS5825M_REG_10, byte4); snd_soc_write(codec, TAS5825M_REG_11, byte3); snd_soc_write(codec, TAS5825M_REG_12, byte2); snd_soc_write(codec, TAS5825M_REG_13, byte1);}
static int tas5825m_vol_locked_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol){ struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); struct tas5825m_priv *tas5825m = snd_soc_codec_get_drvdata(codec);
mutex_lock(&tas5825m->lock);
tas5825m->vol = ucontrol->value.integer.value[0]; tas5825m_set_volume(codec, tas5825m->vol);
mutex_unlock(&tas5825m->lock);
return 0;}
static const struct snd_kcontrol_new tas5825m_vol_control ={ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "Master Playback Volume", .info = tas5825m_vol_info, .get = tas5825m_vol_locked_get, .put = tas5825m_vol_locked_put,};
static int tas5825m_snd_probe(struct snd_soc_codec *codec){ int ret;
ret = snd_soc_add_codec_controls(codec, &tas5825m_vol_control, 1);
return ret;}
static struct snd_soc_codec_driver soc_codec_tas5825m = { .probe = tas5825m_snd_probe,};
static int tas5825m_mute(struct snd_soc_dai *dai, int mute){ u8 reg03_value = 0; u8 reg35_value = 0; struct snd_soc_codec *codec = dai->codec;
if (mute) { reg03_value = 0x0b; reg35_value = 0x00; } else { reg03_value = 0x03; reg35_value = 0x11; }
snd_soc_write(codec, TAS5825M_REG_00, TAS5825M_PAGE_00); snd_soc_write(codec, TAS5825M_REG_7F, TAS5825M_BOOK_00); snd_soc_write(codec, TAS5825M_REG_00, TAS5825M_PAGE_00); snd_soc_write(codec, TAS5825M_REG_03, reg03_value); snd_soc_write(codec, TAS5825M_REG_35, reg35_value);
return 0;}
static const struct snd_soc_dai_ops tas5825m_dai_ops = { .digital_mute = tas5825m_mute,};
static struct snd_soc_dai_driver tas5825m_dai = { .name = "tas5825m-amp", .playback = { .stream_name = "Playback", .channels_min = 2, .channels_max = 2, .rates = TAS5825M_RATES, .formats = TAS5825M_FORMATS, }, .ops = &tas5825m_dai_ops,};
static int tas5825m_probe(struct device *dev, struct regmap *regmap){ struct tas5825m_priv *tas5825m; int ret;
tas5825m = devm_kzalloc(dev, sizeof(struct tas5825m_priv), GFP_KERNEL); if (!tas5825m) return -ENOMEM;
dev_set_drvdata(dev, tas5825m); tas5825m->regmap = regmap; tas5825m->vol = 85; // -25dB
mutex_init(&tas5825m->lock);
ret = regmap_register_patch(regmap, tas5825m_init_sequence, ARRAY_SIZE(tas5825m_init_sequence)); if (ret != 0) { dev_err(dev, "Failed to initialize TAS5825M: %d\n",ret); goto err;
}
msleep(5); ret = regmap_register_patch(regmap, tas5825m_init1_sequence, ARRAY_SIZE(tas5825m_init1_sequence)); if (ret != 0) { dev_err(dev, "Failed to initialize TAS5825M: %d\n",ret); goto err;
}
ret = snd_soc_register_codec(dev, &soc_codec_tas5825m, &tas5825m_dai, 1); if (ret != 0) { dev_err(dev, "Failed to register CODEC: %d\n", ret); goto err; }
return 0;
err: return ret;
}
static int tas5825m_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id){ struct regmap *regmap; struct regmap_config config = tas5825m_regmap;
regmap = devm_regmap_init_i2c(i2c, &config); if (IS_ERR(regmap)) return PTR_ERR(regmap);
return tas5825m_probe(&i2c->dev, regmap);}
static int tas5825m_remove(struct device *dev){ snd_soc_unregister_codec(dev);
return 0;}
static int tas5825m_i2c_remove(struct i2c_client *i2c){ tas5825m_remove(&i2c->dev);
return 0;}
static const struct i2c_device_id tas5825m_i2c_id[] = { { "tas5825m", }, { }};MODULE_DEVICE_TABLE(i2c, tas5825m_i2c_id);
#ifdef CONFIG_OFstatic const struct of_device_id tas5825m_of_match[] = { { .compatible = "ti,tas5825m", }, { }};MODULE_DEVICE_TABLE(of, tas5825m_of_match);#endif
static struct i2c_driver tas5825m_i2c_driver = { .probe = tas5825m_i2c_probe, .remove = tas5825m_i2c_remove, .id_table = tas5825m_i2c_id, .driver = { .name = TAS5825M_DRV_NAME, .of_match_table = tas5825m_of_match, },};
module_i2c_driver(tas5825m_i2c_driver);
MODULE_AUTHOR("Andy Liu <andy-liu@ti.com>");MODULE_AUTHOR("Dario Murgia <dario.murgia@alumni.uniroma2.eu>");MODULE_DESCRIPTION("TAS5825M Audio Amplifier Driver");MODULE_LICENSE("GPL v2");
这是给您分享的帖子中的相关代码，有关于音量配置的代码，请您参考一下。
