1*ec452684SDaniel Beer // SPDX-License-Identifier: GPL-2.0 2*ec452684SDaniel Beer // 3*ec452684SDaniel Beer // Driver for the TAS5805M Audio Amplifier 4*ec452684SDaniel Beer // 5*ec452684SDaniel Beer // Author: Andy Liu <andy-liu@ti.com> 6*ec452684SDaniel Beer // Author: Daniel Beer <daniel.beer@igorinstitute.com> 7*ec452684SDaniel Beer // 8*ec452684SDaniel Beer // This is based on a driver originally written by Andy Liu at TI and 9*ec452684SDaniel Beer // posted here: 10*ec452684SDaniel Beer // 11*ec452684SDaniel Beer // https://e2e.ti.com/support/audio-group/audio/f/audio-forum/722027/linux-tas5825m-linux-drivers 12*ec452684SDaniel Beer // 13*ec452684SDaniel Beer // It has been simplified a little and reworked for the 5.x ALSA SoC API. 14*ec452684SDaniel Beer 15*ec452684SDaniel Beer #include <linux/module.h> 16*ec452684SDaniel Beer #include <linux/moduleparam.h> 17*ec452684SDaniel Beer #include <linux/kernel.h> 18*ec452684SDaniel Beer #include <linux/firmware.h> 19*ec452684SDaniel Beer #include <linux/slab.h> 20*ec452684SDaniel Beer #include <linux/of.h> 21*ec452684SDaniel Beer #include <linux/init.h> 22*ec452684SDaniel Beer #include <linux/i2c.h> 23*ec452684SDaniel Beer #include <linux/regmap.h> 24*ec452684SDaniel Beer #include <linux/gpio/consumer.h> 25*ec452684SDaniel Beer #include <linux/regulator/consumer.h> 26*ec452684SDaniel Beer #include <linux/atomic.h> 27*ec452684SDaniel Beer #include <linux/workqueue.h> 28*ec452684SDaniel Beer 29*ec452684SDaniel Beer #include <sound/soc.h> 30*ec452684SDaniel Beer #include <sound/pcm.h> 31*ec452684SDaniel Beer #include <sound/initval.h> 32*ec452684SDaniel Beer 33*ec452684SDaniel Beer /* Datasheet-defined registers on page 0, book 0 */ 34*ec452684SDaniel Beer #define REG_PAGE 0x00 35*ec452684SDaniel Beer #define REG_DEVICE_CTRL_1 0x02 36*ec452684SDaniel Beer #define REG_DEVICE_CTRL_2 0x03 37*ec452684SDaniel Beer #define REG_SIG_CH_CTRL 0x28 38*ec452684SDaniel Beer #define REG_SAP_CTRL_1 0x33 39*ec452684SDaniel Beer #define REG_FS_MON 0x37 40*ec452684SDaniel Beer #define REG_BCK_MON 0x38 41*ec452684SDaniel Beer #define REG_CLKDET_STATUS 0x39 42*ec452684SDaniel Beer #define REG_VOL_CTL 0x4c 43*ec452684SDaniel Beer #define REG_AGAIN 0x54 44*ec452684SDaniel Beer #define REG_ADR_PIN_CTRL 0x60 45*ec452684SDaniel Beer #define REG_ADR_PIN_CONFIG 0x61 46*ec452684SDaniel Beer #define REG_CHAN_FAULT 0x70 47*ec452684SDaniel Beer #define REG_GLOBAL_FAULT1 0x71 48*ec452684SDaniel Beer #define REG_GLOBAL_FAULT2 0x72 49*ec452684SDaniel Beer #define REG_FAULT 0x78 50*ec452684SDaniel Beer #define REG_BOOK 0x7f 51*ec452684SDaniel Beer 52*ec452684SDaniel Beer /* DEVICE_CTRL_2 register values */ 53*ec452684SDaniel Beer #define DCTRL2_MODE_DEEP_SLEEP 0x00 54*ec452684SDaniel Beer #define DCTRL2_MODE_SLEEP 0x01 55*ec452684SDaniel Beer #define DCTRL2_MODE_HIZ 0x02 56*ec452684SDaniel Beer #define DCTRL2_MODE_PLAY 0x03 57*ec452684SDaniel Beer 58*ec452684SDaniel Beer #define DCTRL2_MUTE 0x08 59*ec452684SDaniel Beer #define DCTRL2_DIS_DSP 0x10 60*ec452684SDaniel Beer 61*ec452684SDaniel Beer /* This sequence of register writes must always be sent, prior to the 62*ec452684SDaniel Beer * 5ms delay while we wait for the DSP to boot. 63*ec452684SDaniel Beer */ 64*ec452684SDaniel Beer static const uint8_t dsp_cfg_preboot[] = { 65*ec452684SDaniel Beer 0x00, 0x00, 0x7f, 0x00, 0x03, 0x02, 0x01, 0x11, 66*ec452684SDaniel Beer 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 67*ec452684SDaniel Beer 0x00, 0x00, 0x7f, 0x00, 0x03, 0x02, 68*ec452684SDaniel Beer }; 69*ec452684SDaniel Beer 70*ec452684SDaniel Beer static const uint32_t tas5805m_volume[] = { 71*ec452684SDaniel Beer 0x0000001B, /* 0, -110dB */ 0x0000001E, /* 1, -109dB */ 72*ec452684SDaniel Beer 0x00000021, /* 2, -108dB */ 0x00000025, /* 3, -107dB */ 73*ec452684SDaniel Beer 0x0000002A, /* 4, -106dB */ 0x0000002F, /* 5, -105dB */ 74*ec452684SDaniel Beer 0x00000035, /* 6, -104dB */ 0x0000003B, /* 7, -103dB */ 75*ec452684SDaniel Beer 0x00000043, /* 8, -102dB */ 0x0000004B, /* 9, -101dB */ 76*ec452684SDaniel Beer 0x00000054, /* 10, -100dB */ 0x0000005E, /* 11, -99dB */ 77*ec452684SDaniel Beer 0x0000006A, /* 12, -98dB */ 0x00000076, /* 13, -97dB */ 78*ec452684SDaniel Beer 0x00000085, /* 14, -96dB */ 0x00000095, /* 15, -95dB */ 79*ec452684SDaniel Beer 0x000000A7, /* 16, -94dB */ 0x000000BC, /* 17, -93dB */ 80*ec452684SDaniel Beer 0x000000D3, /* 18, -92dB */ 0x000000EC, /* 19, -91dB */ 81*ec452684SDaniel Beer 0x00000109, /* 20, -90dB */ 0x0000012A, /* 21, -89dB */ 82*ec452684SDaniel Beer 0x0000014E, /* 22, -88dB */ 0x00000177, /* 23, -87dB */ 83*ec452684SDaniel Beer 0x000001A4, /* 24, -86dB */ 0x000001D8, /* 25, -85dB */ 84*ec452684SDaniel Beer 0x00000211, /* 26, -84dB */ 0x00000252, /* 27, -83dB */ 85*ec452684SDaniel Beer 0x0000029A, /* 28, -82dB */ 0x000002EC, /* 29, -81dB */ 86*ec452684SDaniel Beer 0x00000347, /* 30, -80dB */ 0x000003AD, /* 31, -79dB */ 87*ec452684SDaniel Beer 0x00000420, /* 32, -78dB */ 0x000004A1, /* 33, -77dB */ 88*ec452684SDaniel Beer 0x00000532, /* 34, -76dB */ 0x000005D4, /* 35, -75dB */ 89*ec452684SDaniel Beer 0x0000068A, /* 36, -74dB */ 0x00000756, /* 37, -73dB */ 90*ec452684SDaniel Beer 0x0000083B, /* 38, -72dB */ 0x0000093C, /* 39, -71dB */ 91*ec452684SDaniel Beer 0x00000A5D, /* 40, -70dB */ 0x00000BA0, /* 41, -69dB */ 92*ec452684SDaniel Beer 0x00000D0C, /* 42, -68dB */ 0x00000EA3, /* 43, -67dB */ 93*ec452684SDaniel Beer 0x0000106C, /* 44, -66dB */ 0x0000126D, /* 45, -65dB */ 94*ec452684SDaniel Beer 0x000014AD, /* 46, -64dB */ 0x00001733, /* 47, -63dB */ 95*ec452684SDaniel Beer 0x00001A07, /* 48, -62dB */ 0x00001D34, /* 49, -61dB */ 96*ec452684SDaniel Beer 0x000020C5, /* 50, -60dB */ 0x000024C4, /* 51, -59dB */ 97*ec452684SDaniel Beer 0x00002941, /* 52, -58dB */ 0x00002E49, /* 53, -57dB */ 98*ec452684SDaniel Beer 0x000033EF, /* 54, -56dB */ 0x00003A45, /* 55, -55dB */ 99*ec452684SDaniel Beer 0x00004161, /* 56, -54dB */ 0x0000495C, /* 57, -53dB */ 100*ec452684SDaniel Beer 0x0000524F, /* 58, -52dB */ 0x00005C5A, /* 59, -51dB */ 101*ec452684SDaniel Beer 0x0000679F, /* 60, -50dB */ 0x00007444, /* 61, -49dB */ 102*ec452684SDaniel Beer 0x00008274, /* 62, -48dB */ 0x0000925F, /* 63, -47dB */ 103*ec452684SDaniel Beer 0x0000A43B, /* 64, -46dB */ 0x0000B845, /* 65, -45dB */ 104*ec452684SDaniel Beer 0x0000CEC1, /* 66, -44dB */ 0x0000E7FB, /* 67, -43dB */ 105*ec452684SDaniel Beer 0x00010449, /* 68, -42dB */ 0x0001240C, /* 69, -41dB */ 106*ec452684SDaniel Beer 0x000147AE, /* 70, -40dB */ 0x00016FAA, /* 71, -39dB */ 107*ec452684SDaniel Beer 0x00019C86, /* 72, -38dB */ 0x0001CEDC, /* 73, -37dB */ 108*ec452684SDaniel Beer 0x00020756, /* 74, -36dB */ 0x000246B5, /* 75, -35dB */ 109*ec452684SDaniel Beer 0x00028DCF, /* 76, -34dB */ 0x0002DD96, /* 77, -33dB */ 110*ec452684SDaniel Beer 0x00033718, /* 78, -32dB */ 0x00039B87, /* 79, -31dB */ 111*ec452684SDaniel Beer 0x00040C37, /* 80, -30dB */ 0x00048AA7, /* 81, -29dB */ 112*ec452684SDaniel Beer 0x00051884, /* 82, -28dB */ 0x0005B7B1, /* 83, -27dB */ 113*ec452684SDaniel Beer 0x00066A4A, /* 84, -26dB */ 0x000732AE, /* 85, -25dB */ 114*ec452684SDaniel Beer 0x00081385, /* 86, -24dB */ 0x00090FCC, /* 87, -23dB */ 115*ec452684SDaniel Beer 0x000A2ADB, /* 88, -22dB */ 0x000B6873, /* 89, -21dB */ 116*ec452684SDaniel Beer 0x000CCCCD, /* 90, -20dB */ 0x000E5CA1, /* 91, -19dB */ 117*ec452684SDaniel Beer 0x00101D3F, /* 92, -18dB */ 0x0012149A, /* 93, -17dB */ 118*ec452684SDaniel Beer 0x00144961, /* 94, -16dB */ 0x0016C311, /* 95, -15dB */ 119*ec452684SDaniel Beer 0x00198A13, /* 96, -14dB */ 0x001CA7D7, /* 97, -13dB */ 120*ec452684SDaniel Beer 0x002026F3, /* 98, -12dB */ 0x00241347, /* 99, -11dB */ 121*ec452684SDaniel Beer 0x00287A27, /* 100, -10dB */ 0x002D6A86, /* 101, -9dB */ 122*ec452684SDaniel Beer 0x0032F52D, /* 102, -8dB */ 0x00392CEE, /* 103, -7dB */ 123*ec452684SDaniel Beer 0x004026E7, /* 104, -6dB */ 0x0047FACD, /* 105, -5dB */ 124*ec452684SDaniel Beer 0x0050C336, /* 106, -4dB */ 0x005A9DF8, /* 107, -3dB */ 125*ec452684SDaniel Beer 0x0065AC8C, /* 108, -2dB */ 0x00721483, /* 109, -1dB */ 126*ec452684SDaniel Beer 0x00800000, /* 110, 0dB */ 0x008F9E4D, /* 111, 1dB */ 127*ec452684SDaniel Beer 0x00A12478, /* 112, 2dB */ 0x00B4CE08, /* 113, 3dB */ 128*ec452684SDaniel Beer 0x00CADDC8, /* 114, 4dB */ 0x00E39EA9, /* 115, 5dB */ 129*ec452684SDaniel Beer 0x00FF64C1, /* 116, 6dB */ 0x011E8E6A, /* 117, 7dB */ 130*ec452684SDaniel Beer 0x0141857F, /* 118, 8dB */ 0x0168C0C6, /* 119, 9dB */ 131*ec452684SDaniel Beer 0x0194C584, /* 120, 10dB */ 0x01C62940, /* 121, 11dB */ 132*ec452684SDaniel Beer 0x01FD93C2, /* 122, 12dB */ 0x023BC148, /* 123, 13dB */ 133*ec452684SDaniel Beer 0x02818508, /* 124, 14dB */ 0x02CFCC01, /* 125, 15dB */ 134*ec452684SDaniel Beer 0x0327A01A, /* 126, 16dB */ 0x038A2BAD, /* 127, 17dB */ 135*ec452684SDaniel Beer 0x03F8BD7A, /* 128, 18dB */ 0x0474CD1B, /* 129, 19dB */ 136*ec452684SDaniel Beer 0x05000000, /* 130, 20dB */ 0x059C2F02, /* 131, 21dB */ 137*ec452684SDaniel Beer 0x064B6CAE, /* 132, 22dB */ 0x07100C4D, /* 133, 23dB */ 138*ec452684SDaniel Beer 0x07ECA9CD, /* 134, 24dB */ 0x08E43299, /* 135, 25dB */ 139*ec452684SDaniel Beer 0x09F9EF8E, /* 136, 26dB */ 0x0B319025, /* 137, 27dB */ 140*ec452684SDaniel Beer 0x0C8F36F2, /* 138, 28dB */ 0x0E1787B8, /* 139, 29dB */ 141*ec452684SDaniel Beer 0x0FCFB725, /* 140, 30dB */ 0x11BD9C84, /* 141, 31dB */ 142*ec452684SDaniel Beer 0x13E7C594, /* 142, 32dB */ 0x16558CCB, /* 143, 33dB */ 143*ec452684SDaniel Beer 0x190F3254, /* 144, 34dB */ 0x1C1DF80E, /* 145, 35dB */ 144*ec452684SDaniel Beer 0x1F8C4107, /* 146, 36dB */ 0x2365B4BF, /* 147, 37dB */ 145*ec452684SDaniel Beer 0x27B766C2, /* 148, 38dB */ 0x2C900313, /* 149, 39dB */ 146*ec452684SDaniel Beer 0x32000000, /* 150, 40dB */ 0x3819D612, /* 151, 41dB */ 147*ec452684SDaniel Beer 0x3EF23ECA, /* 152, 42dB */ 0x46A07B07, /* 153, 43dB */ 148*ec452684SDaniel Beer 0x4F3EA203, /* 154, 44dB */ 0x58E9F9F9, /* 155, 45dB */ 149*ec452684SDaniel Beer 0x63C35B8E, /* 156, 46dB */ 0x6FEFA16D, /* 157, 47dB */ 150*ec452684SDaniel Beer 0x7D982575, /* 158, 48dB */ 151*ec452684SDaniel Beer }; 152*ec452684SDaniel Beer 153*ec452684SDaniel Beer #define TAS5805M_VOLUME_MAX ((int)ARRAY_SIZE(tas5805m_volume) - 1) 154*ec452684SDaniel Beer #define TAS5805M_VOLUME_MIN 0 155*ec452684SDaniel Beer 156*ec452684SDaniel Beer struct tas5805m_priv { 157*ec452684SDaniel Beer struct regulator *pvdd; 158*ec452684SDaniel Beer struct gpio_desc *gpio_pdn_n; 159*ec452684SDaniel Beer 160*ec452684SDaniel Beer uint8_t *dsp_cfg_data; 161*ec452684SDaniel Beer int dsp_cfg_len; 162*ec452684SDaniel Beer 163*ec452684SDaniel Beer struct regmap *regmap; 164*ec452684SDaniel Beer 165*ec452684SDaniel Beer int vol[2]; 166*ec452684SDaniel Beer bool is_powered; 167*ec452684SDaniel Beer bool is_muted; 168*ec452684SDaniel Beer }; 169*ec452684SDaniel Beer 170*ec452684SDaniel Beer static void set_dsp_scale(struct regmap *rm, int offset, int vol) 171*ec452684SDaniel Beer { 172*ec452684SDaniel Beer uint8_t v[4]; 173*ec452684SDaniel Beer uint32_t x = tas5805m_volume[vol]; 174*ec452684SDaniel Beer int i; 175*ec452684SDaniel Beer 176*ec452684SDaniel Beer for (i = 0; i < 4; i++) { 177*ec452684SDaniel Beer v[3 - i] = x; 178*ec452684SDaniel Beer x >>= 8; 179*ec452684SDaniel Beer } 180*ec452684SDaniel Beer 181*ec452684SDaniel Beer regmap_bulk_write(rm, offset, v, ARRAY_SIZE(v)); 182*ec452684SDaniel Beer } 183*ec452684SDaniel Beer 184*ec452684SDaniel Beer static void tas5805m_refresh(struct snd_soc_component *component) 185*ec452684SDaniel Beer { 186*ec452684SDaniel Beer struct tas5805m_priv *tas5805m = 187*ec452684SDaniel Beer snd_soc_component_get_drvdata(component); 188*ec452684SDaniel Beer struct regmap *rm = tas5805m->regmap; 189*ec452684SDaniel Beer 190*ec452684SDaniel Beer dev_dbg(component->dev, "refresh: is_muted=%d, vol=%d/%d\n", 191*ec452684SDaniel Beer tas5805m->is_muted, tas5805m->vol[0], tas5805m->vol[1]); 192*ec452684SDaniel Beer 193*ec452684SDaniel Beer regmap_write(rm, REG_PAGE, 0x00); 194*ec452684SDaniel Beer regmap_write(rm, REG_BOOK, 0x8c); 195*ec452684SDaniel Beer regmap_write(rm, REG_PAGE, 0x2a); 196*ec452684SDaniel Beer 197*ec452684SDaniel Beer /* Refresh volume. The actual volume control documented in the 198*ec452684SDaniel Beer * datasheet doesn't seem to work correctly. This is a pair of 199*ec452684SDaniel Beer * DSP registers which are *not* documented in the datasheet. 200*ec452684SDaniel Beer */ 201*ec452684SDaniel Beer set_dsp_scale(rm, 0x24, tas5805m->vol[0]); 202*ec452684SDaniel Beer set_dsp_scale(rm, 0x28, tas5805m->vol[1]); 203*ec452684SDaniel Beer 204*ec452684SDaniel Beer /* Set/clear digital soft-mute */ 205*ec452684SDaniel Beer regmap_write(rm, REG_DEVICE_CTRL_2, 206*ec452684SDaniel Beer (tas5805m->is_muted ? DCTRL2_MUTE : 0) | 207*ec452684SDaniel Beer DCTRL2_MODE_PLAY); 208*ec452684SDaniel Beer } 209*ec452684SDaniel Beer 210*ec452684SDaniel Beer static int tas5805m_vol_info(struct snd_kcontrol *kcontrol, 211*ec452684SDaniel Beer struct snd_ctl_elem_info *uinfo) 212*ec452684SDaniel Beer { 213*ec452684SDaniel Beer uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 214*ec452684SDaniel Beer uinfo->count = 2; 215*ec452684SDaniel Beer 216*ec452684SDaniel Beer uinfo->value.integer.min = TAS5805M_VOLUME_MIN; 217*ec452684SDaniel Beer uinfo->value.integer.max = TAS5805M_VOLUME_MAX; 218*ec452684SDaniel Beer return 0; 219*ec452684SDaniel Beer } 220*ec452684SDaniel Beer 221*ec452684SDaniel Beer static int tas5805m_vol_get(struct snd_kcontrol *kcontrol, 222*ec452684SDaniel Beer struct snd_ctl_elem_value *ucontrol) 223*ec452684SDaniel Beer { 224*ec452684SDaniel Beer struct snd_soc_component *component = 225*ec452684SDaniel Beer snd_soc_kcontrol_component(kcontrol); 226*ec452684SDaniel Beer struct tas5805m_priv *tas5805m = 227*ec452684SDaniel Beer snd_soc_component_get_drvdata(component); 228*ec452684SDaniel Beer 229*ec452684SDaniel Beer ucontrol->value.integer.value[0] = tas5805m->vol[0]; 230*ec452684SDaniel Beer ucontrol->value.integer.value[1] = tas5805m->vol[1]; 231*ec452684SDaniel Beer return 0; 232*ec452684SDaniel Beer } 233*ec452684SDaniel Beer 234*ec452684SDaniel Beer static inline int volume_is_valid(int v) 235*ec452684SDaniel Beer { 236*ec452684SDaniel Beer return (v >= TAS5805M_VOLUME_MIN) && (v <= TAS5805M_VOLUME_MAX); 237*ec452684SDaniel Beer } 238*ec452684SDaniel Beer 239*ec452684SDaniel Beer static int tas5805m_vol_put(struct snd_kcontrol *kcontrol, 240*ec452684SDaniel Beer struct snd_ctl_elem_value *ucontrol) 241*ec452684SDaniel Beer { 242*ec452684SDaniel Beer struct snd_soc_component *component = 243*ec452684SDaniel Beer snd_soc_kcontrol_component(kcontrol); 244*ec452684SDaniel Beer struct tas5805m_priv *tas5805m = 245*ec452684SDaniel Beer snd_soc_component_get_drvdata(component); 246*ec452684SDaniel Beer 247*ec452684SDaniel Beer if (!(volume_is_valid(ucontrol->value.integer.value[0]) && 248*ec452684SDaniel Beer volume_is_valid(ucontrol->value.integer.value[1]))) 249*ec452684SDaniel Beer return -EINVAL; 250*ec452684SDaniel Beer 251*ec452684SDaniel Beer if (tas5805m->vol[0] != ucontrol->value.integer.value[0] || 252*ec452684SDaniel Beer tas5805m->vol[1] != ucontrol->value.integer.value[1]) { 253*ec452684SDaniel Beer tas5805m->vol[0] = ucontrol->value.integer.value[0]; 254*ec452684SDaniel Beer tas5805m->vol[1] = ucontrol->value.integer.value[1]; 255*ec452684SDaniel Beer dev_dbg(component->dev, "set vol=%d/%d (is_powered=%d)\n", 256*ec452684SDaniel Beer tas5805m->vol[0], tas5805m->vol[1], 257*ec452684SDaniel Beer tas5805m->is_powered); 258*ec452684SDaniel Beer if (tas5805m->is_powered) 259*ec452684SDaniel Beer tas5805m_refresh(component); 260*ec452684SDaniel Beer return 1; 261*ec452684SDaniel Beer } 262*ec452684SDaniel Beer 263*ec452684SDaniel Beer return 0; 264*ec452684SDaniel Beer } 265*ec452684SDaniel Beer 266*ec452684SDaniel Beer static const struct snd_kcontrol_new tas5805m_snd_controls[] = { 267*ec452684SDaniel Beer { 268*ec452684SDaniel Beer .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 269*ec452684SDaniel Beer .name = "Master Playback Volume", 270*ec452684SDaniel Beer .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | 271*ec452684SDaniel Beer SNDRV_CTL_ELEM_ACCESS_READWRITE, 272*ec452684SDaniel Beer .info = tas5805m_vol_info, 273*ec452684SDaniel Beer .get = tas5805m_vol_get, 274*ec452684SDaniel Beer .put = tas5805m_vol_put, 275*ec452684SDaniel Beer }, 276*ec452684SDaniel Beer }; 277*ec452684SDaniel Beer 278*ec452684SDaniel Beer static void send_cfg(struct regmap *rm, 279*ec452684SDaniel Beer const uint8_t *s, unsigned int len) 280*ec452684SDaniel Beer { 281*ec452684SDaniel Beer unsigned int i; 282*ec452684SDaniel Beer 283*ec452684SDaniel Beer for (i = 0; i + 1 < len; i += 2) 284*ec452684SDaniel Beer regmap_write(rm, s[i], s[i + 1]); 285*ec452684SDaniel Beer } 286*ec452684SDaniel Beer 287*ec452684SDaniel Beer /* The TAS5805M DSP can't be configured until the I2S clock has been 288*ec452684SDaniel Beer * present and stable for 5ms, or else it won't boot and we get no 289*ec452684SDaniel Beer * sound. 290*ec452684SDaniel Beer */ 291*ec452684SDaniel Beer static int tas5805m_trigger(struct snd_pcm_substream *substream, int cmd, 292*ec452684SDaniel Beer struct snd_soc_dai *dai) 293*ec452684SDaniel Beer { 294*ec452684SDaniel Beer struct snd_soc_component *component = dai->component; 295*ec452684SDaniel Beer struct tas5805m_priv *tas5805m = 296*ec452684SDaniel Beer snd_soc_component_get_drvdata(component); 297*ec452684SDaniel Beer struct regmap *rm = tas5805m->regmap; 298*ec452684SDaniel Beer unsigned int chan, global1, global2; 299*ec452684SDaniel Beer 300*ec452684SDaniel Beer switch (cmd) { 301*ec452684SDaniel Beer case SNDRV_PCM_TRIGGER_START: 302*ec452684SDaniel Beer case SNDRV_PCM_TRIGGER_RESUME: 303*ec452684SDaniel Beer case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 304*ec452684SDaniel Beer dev_dbg(component->dev, "DSP startup\n"); 305*ec452684SDaniel Beer 306*ec452684SDaniel Beer /* We mustn't issue any I2C transactions until the I2S 307*ec452684SDaniel Beer * clock is stable. Furthermore, we must allow a 5ms 308*ec452684SDaniel Beer * delay after the first set of register writes to 309*ec452684SDaniel Beer * allow the DSP to boot before configuring it. 310*ec452684SDaniel Beer */ 311*ec452684SDaniel Beer usleep_range(5000, 10000); 312*ec452684SDaniel Beer send_cfg(rm, dsp_cfg_preboot, 313*ec452684SDaniel Beer ARRAY_SIZE(dsp_cfg_preboot)); 314*ec452684SDaniel Beer usleep_range(5000, 15000); 315*ec452684SDaniel Beer send_cfg(rm, tas5805m->dsp_cfg_data, 316*ec452684SDaniel Beer tas5805m->dsp_cfg_len); 317*ec452684SDaniel Beer 318*ec452684SDaniel Beer tas5805m->is_powered = true; 319*ec452684SDaniel Beer tas5805m_refresh(component); 320*ec452684SDaniel Beer break; 321*ec452684SDaniel Beer 322*ec452684SDaniel Beer case SNDRV_PCM_TRIGGER_STOP: 323*ec452684SDaniel Beer case SNDRV_PCM_TRIGGER_SUSPEND: 324*ec452684SDaniel Beer case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 325*ec452684SDaniel Beer dev_dbg(component->dev, "DSP shutdown\n"); 326*ec452684SDaniel Beer 327*ec452684SDaniel Beer tas5805m->is_powered = false; 328*ec452684SDaniel Beer 329*ec452684SDaniel Beer regmap_write(rm, REG_PAGE, 0x00); 330*ec452684SDaniel Beer regmap_write(rm, REG_BOOK, 0x00); 331*ec452684SDaniel Beer 332*ec452684SDaniel Beer regmap_read(rm, REG_CHAN_FAULT, &chan); 333*ec452684SDaniel Beer regmap_read(rm, REG_GLOBAL_FAULT1, &global1); 334*ec452684SDaniel Beer regmap_read(rm, REG_GLOBAL_FAULT2, &global2); 335*ec452684SDaniel Beer 336*ec452684SDaniel Beer dev_dbg(component->dev, 337*ec452684SDaniel Beer "fault regs: CHAN=%02x, GLOBAL1=%02x, GLOBAL2=%02x\n", 338*ec452684SDaniel Beer chan, global1, global2); 339*ec452684SDaniel Beer 340*ec452684SDaniel Beer regmap_write(rm, REG_DEVICE_CTRL_2, DCTRL2_MODE_HIZ); 341*ec452684SDaniel Beer break; 342*ec452684SDaniel Beer 343*ec452684SDaniel Beer default: 344*ec452684SDaniel Beer return -EINVAL; 345*ec452684SDaniel Beer } 346*ec452684SDaniel Beer 347*ec452684SDaniel Beer return 0; 348*ec452684SDaniel Beer } 349*ec452684SDaniel Beer 350*ec452684SDaniel Beer static const struct snd_soc_dapm_route tas5805m_audio_map[] = { 351*ec452684SDaniel Beer { "DAC", NULL, "DAC IN" }, 352*ec452684SDaniel Beer { "OUT", NULL, "DAC" }, 353*ec452684SDaniel Beer }; 354*ec452684SDaniel Beer 355*ec452684SDaniel Beer static const struct snd_soc_dapm_widget tas5805m_dapm_widgets[] = { 356*ec452684SDaniel Beer SND_SOC_DAPM_AIF_IN("DAC IN", "Playback", 0, SND_SOC_NOPM, 0, 0), 357*ec452684SDaniel Beer SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0), 358*ec452684SDaniel Beer SND_SOC_DAPM_OUTPUT("OUT") 359*ec452684SDaniel Beer }; 360*ec452684SDaniel Beer 361*ec452684SDaniel Beer static const struct snd_soc_component_driver soc_codec_dev_tas5805m = { 362*ec452684SDaniel Beer .controls = tas5805m_snd_controls, 363*ec452684SDaniel Beer .num_controls = ARRAY_SIZE(tas5805m_snd_controls), 364*ec452684SDaniel Beer .dapm_widgets = tas5805m_dapm_widgets, 365*ec452684SDaniel Beer .num_dapm_widgets = ARRAY_SIZE(tas5805m_dapm_widgets), 366*ec452684SDaniel Beer .dapm_routes = tas5805m_audio_map, 367*ec452684SDaniel Beer .num_dapm_routes = ARRAY_SIZE(tas5805m_audio_map), 368*ec452684SDaniel Beer .use_pmdown_time = 1, 369*ec452684SDaniel Beer .endianness = 1, 370*ec452684SDaniel Beer .non_legacy_dai_naming = 1, 371*ec452684SDaniel Beer }; 372*ec452684SDaniel Beer 373*ec452684SDaniel Beer static int tas5805m_mute(struct snd_soc_dai *dai, int mute, int direction) 374*ec452684SDaniel Beer { 375*ec452684SDaniel Beer struct snd_soc_component *component = dai->component; 376*ec452684SDaniel Beer struct tas5805m_priv *tas5805m = 377*ec452684SDaniel Beer snd_soc_component_get_drvdata(component); 378*ec452684SDaniel Beer 379*ec452684SDaniel Beer dev_dbg(component->dev, "set mute=%d (is_powered=%d)\n", 380*ec452684SDaniel Beer mute, tas5805m->is_powered); 381*ec452684SDaniel Beer tas5805m->is_muted = mute; 382*ec452684SDaniel Beer if (tas5805m->is_powered) 383*ec452684SDaniel Beer tas5805m_refresh(component); 384*ec452684SDaniel Beer 385*ec452684SDaniel Beer return 0; 386*ec452684SDaniel Beer } 387*ec452684SDaniel Beer 388*ec452684SDaniel Beer static const struct snd_soc_dai_ops tas5805m_dai_ops = { 389*ec452684SDaniel Beer .trigger = tas5805m_trigger, 390*ec452684SDaniel Beer .mute_stream = tas5805m_mute, 391*ec452684SDaniel Beer .no_capture_mute = 1, 392*ec452684SDaniel Beer }; 393*ec452684SDaniel Beer 394*ec452684SDaniel Beer static struct snd_soc_dai_driver tas5805m_dai = { 395*ec452684SDaniel Beer .name = "tas5805m-amplifier", 396*ec452684SDaniel Beer .playback = { 397*ec452684SDaniel Beer .stream_name = "Playback", 398*ec452684SDaniel Beer .channels_min = 2, 399*ec452684SDaniel Beer .channels_max = 2, 400*ec452684SDaniel Beer .rates = SNDRV_PCM_RATE_48000, 401*ec452684SDaniel Beer .formats = SNDRV_PCM_FMTBIT_S32_LE, 402*ec452684SDaniel Beer }, 403*ec452684SDaniel Beer .ops = &tas5805m_dai_ops, 404*ec452684SDaniel Beer }; 405*ec452684SDaniel Beer 406*ec452684SDaniel Beer static const struct regmap_config tas5805m_regmap = { 407*ec452684SDaniel Beer .reg_bits = 8, 408*ec452684SDaniel Beer .val_bits = 8, 409*ec452684SDaniel Beer 410*ec452684SDaniel Beer /* We have quite a lot of multi-level bank switching and a 411*ec452684SDaniel Beer * relatively small number of register writes between bank 412*ec452684SDaniel Beer * switches. 413*ec452684SDaniel Beer */ 414*ec452684SDaniel Beer .cache_type = REGCACHE_NONE, 415*ec452684SDaniel Beer }; 416*ec452684SDaniel Beer 417*ec452684SDaniel Beer static int tas5805m_i2c_probe(struct i2c_client *i2c) 418*ec452684SDaniel Beer { 419*ec452684SDaniel Beer struct device *dev = &i2c->dev; 420*ec452684SDaniel Beer struct regmap *regmap; 421*ec452684SDaniel Beer struct tas5805m_priv *tas5805m; 422*ec452684SDaniel Beer char filename[128]; 423*ec452684SDaniel Beer const char *config_name; 424*ec452684SDaniel Beer const struct firmware *fw; 425*ec452684SDaniel Beer int ret; 426*ec452684SDaniel Beer 427*ec452684SDaniel Beer regmap = devm_regmap_init_i2c(i2c, &tas5805m_regmap); 428*ec452684SDaniel Beer if (IS_ERR(regmap)) { 429*ec452684SDaniel Beer ret = PTR_ERR(regmap); 430*ec452684SDaniel Beer dev_err(dev, "unable to allocate register map: %d\n", ret); 431*ec452684SDaniel Beer return ret; 432*ec452684SDaniel Beer } 433*ec452684SDaniel Beer 434*ec452684SDaniel Beer tas5805m = devm_kzalloc(dev, sizeof(struct tas5805m_priv), GFP_KERNEL); 435*ec452684SDaniel Beer if (!tas5805m) 436*ec452684SDaniel Beer return -ENOMEM; 437*ec452684SDaniel Beer 438*ec452684SDaniel Beer tas5805m->pvdd = devm_regulator_get(dev, "pvdd"); 439*ec452684SDaniel Beer if (IS_ERR(tas5805m->pvdd)) { 440*ec452684SDaniel Beer dev_err(dev, "failed to get pvdd supply: %ld\n", 441*ec452684SDaniel Beer PTR_ERR(tas5805m->pvdd)); 442*ec452684SDaniel Beer return PTR_ERR(tas5805m->pvdd); 443*ec452684SDaniel Beer } 444*ec452684SDaniel Beer 445*ec452684SDaniel Beer dev_set_drvdata(dev, tas5805m); 446*ec452684SDaniel Beer tas5805m->regmap = regmap; 447*ec452684SDaniel Beer tas5805m->gpio_pdn_n = devm_gpiod_get(dev, "pdn", GPIOD_OUT_LOW); 448*ec452684SDaniel Beer if (IS_ERR(tas5805m->gpio_pdn_n)) { 449*ec452684SDaniel Beer dev_err(dev, "error requesting PDN gpio: %ld\n", 450*ec452684SDaniel Beer PTR_ERR(tas5805m->gpio_pdn_n)); 451*ec452684SDaniel Beer return PTR_ERR(tas5805m->gpio_pdn_n); 452*ec452684SDaniel Beer } 453*ec452684SDaniel Beer 454*ec452684SDaniel Beer /* This configuration must be generated by PPC3. The file loaded 455*ec452684SDaniel Beer * consists of a sequence of register writes, where bytes at 456*ec452684SDaniel Beer * even indices are register addresses and those at odd indices 457*ec452684SDaniel Beer * are register values. 458*ec452684SDaniel Beer * 459*ec452684SDaniel Beer * The fixed portion of PPC3's output prior to the 5ms delay 460*ec452684SDaniel Beer * should be omitted. 461*ec452684SDaniel Beer */ 462*ec452684SDaniel Beer if (device_property_read_string(dev, "ti,dsp-config-name", 463*ec452684SDaniel Beer &config_name)) 464*ec452684SDaniel Beer config_name = "default"; 465*ec452684SDaniel Beer 466*ec452684SDaniel Beer snprintf(filename, sizeof(filename), "tas5805m_dsp_%s.bin", 467*ec452684SDaniel Beer config_name); 468*ec452684SDaniel Beer ret = request_firmware(&fw, filename, dev); 469*ec452684SDaniel Beer if (ret) 470*ec452684SDaniel Beer return ret; 471*ec452684SDaniel Beer 472*ec452684SDaniel Beer if ((fw->size < 2) || (fw->size & 1)) { 473*ec452684SDaniel Beer dev_err(dev, "firmware is invalid\n"); 474*ec452684SDaniel Beer release_firmware(fw); 475*ec452684SDaniel Beer return -EINVAL; 476*ec452684SDaniel Beer } 477*ec452684SDaniel Beer 478*ec452684SDaniel Beer tas5805m->dsp_cfg_len = fw->size; 479*ec452684SDaniel Beer tas5805m->dsp_cfg_data = devm_kmalloc(dev, fw->size, GFP_KERNEL); 480*ec452684SDaniel Beer if (!tas5805m->dsp_cfg_data) { 481*ec452684SDaniel Beer release_firmware(fw); 482*ec452684SDaniel Beer return -ENOMEM; 483*ec452684SDaniel Beer } 484*ec452684SDaniel Beer memcpy(tas5805m->dsp_cfg_data, fw->data, fw->size); 485*ec452684SDaniel Beer 486*ec452684SDaniel Beer release_firmware(fw); 487*ec452684SDaniel Beer 488*ec452684SDaniel Beer /* Do the first part of the power-on here, while we can expect 489*ec452684SDaniel Beer * the I2S interface to be quiet. We must raise PDN# and then 490*ec452684SDaniel Beer * wait 5ms before any I2S clock is sent, or else the internal 491*ec452684SDaniel Beer * regulator apparently won't come on. 492*ec452684SDaniel Beer * 493*ec452684SDaniel Beer * Also, we must keep the device in power down for 100ms or so 494*ec452684SDaniel Beer * after PVDD is applied, or else the ADR pin is sampled 495*ec452684SDaniel Beer * incorrectly and the device comes up with an unpredictable I2C 496*ec452684SDaniel Beer * address. 497*ec452684SDaniel Beer */ 498*ec452684SDaniel Beer tas5805m->vol[0] = TAS5805M_VOLUME_MIN; 499*ec452684SDaniel Beer tas5805m->vol[1] = TAS5805M_VOLUME_MIN; 500*ec452684SDaniel Beer 501*ec452684SDaniel Beer ret = regulator_enable(tas5805m->pvdd); 502*ec452684SDaniel Beer if (ret < 0) { 503*ec452684SDaniel Beer dev_err(dev, "failed to enable pvdd: %d\n", ret); 504*ec452684SDaniel Beer return ret; 505*ec452684SDaniel Beer } 506*ec452684SDaniel Beer 507*ec452684SDaniel Beer usleep_range(100000, 150000); 508*ec452684SDaniel Beer gpiod_set_value(tas5805m->gpio_pdn_n, 1); 509*ec452684SDaniel Beer usleep_range(10000, 15000); 510*ec452684SDaniel Beer 511*ec452684SDaniel Beer /* Don't register through devm. We need to be able to unregister 512*ec452684SDaniel Beer * the component prior to deasserting PDN# 513*ec452684SDaniel Beer */ 514*ec452684SDaniel Beer ret = snd_soc_register_component(dev, &soc_codec_dev_tas5805m, 515*ec452684SDaniel Beer &tas5805m_dai, 1); 516*ec452684SDaniel Beer if (ret < 0) { 517*ec452684SDaniel Beer dev_err(dev, "unable to register codec: %d\n", ret); 518*ec452684SDaniel Beer gpiod_set_value(tas5805m->gpio_pdn_n, 0); 519*ec452684SDaniel Beer regulator_disable(tas5805m->pvdd); 520*ec452684SDaniel Beer return ret; 521*ec452684SDaniel Beer } 522*ec452684SDaniel Beer 523*ec452684SDaniel Beer return 0; 524*ec452684SDaniel Beer } 525*ec452684SDaniel Beer 526*ec452684SDaniel Beer static int tas5805m_i2c_remove(struct i2c_client *i2c) 527*ec452684SDaniel Beer { 528*ec452684SDaniel Beer struct device *dev = &i2c->dev; 529*ec452684SDaniel Beer struct tas5805m_priv *tas5805m = dev_get_drvdata(dev); 530*ec452684SDaniel Beer 531*ec452684SDaniel Beer snd_soc_unregister_component(dev); 532*ec452684SDaniel Beer gpiod_set_value(tas5805m->gpio_pdn_n, 0); 533*ec452684SDaniel Beer usleep_range(10000, 15000); 534*ec452684SDaniel Beer regulator_disable(tas5805m->pvdd); 535*ec452684SDaniel Beer return 0; 536*ec452684SDaniel Beer } 537*ec452684SDaniel Beer 538*ec452684SDaniel Beer static const struct i2c_device_id tas5805m_i2c_id[] = { 539*ec452684SDaniel Beer { "tas5805m", }, 540*ec452684SDaniel Beer { } 541*ec452684SDaniel Beer }; 542*ec452684SDaniel Beer MODULE_DEVICE_TABLE(i2c, tas5805m_i2c_id); 543*ec452684SDaniel Beer 544*ec452684SDaniel Beer #if IS_ENABLED(CONFIG_OF) 545*ec452684SDaniel Beer static const struct of_device_id tas5805m_of_match[] = { 546*ec452684SDaniel Beer { .compatible = "ti,tas5805m", }, 547*ec452684SDaniel Beer { } 548*ec452684SDaniel Beer }; 549*ec452684SDaniel Beer MODULE_DEVICE_TABLE(of, tas5805m_of_match); 550*ec452684SDaniel Beer #endif 551*ec452684SDaniel Beer 552*ec452684SDaniel Beer static struct i2c_driver tas5805m_i2c_driver = { 553*ec452684SDaniel Beer .probe_new = tas5805m_i2c_probe, 554*ec452684SDaniel Beer .remove = tas5805m_i2c_remove, 555*ec452684SDaniel Beer .id_table = tas5805m_i2c_id, 556*ec452684SDaniel Beer .driver = { 557*ec452684SDaniel Beer .name = "tas5805m", 558*ec452684SDaniel Beer .of_match_table = of_match_ptr(tas5805m_of_match), 559*ec452684SDaniel Beer }, 560*ec452684SDaniel Beer }; 561*ec452684SDaniel Beer 562*ec452684SDaniel Beer module_i2c_driver(tas5805m_i2c_driver); 563*ec452684SDaniel Beer 564*ec452684SDaniel Beer MODULE_AUTHOR("Andy Liu <andy-liu@ti.com>"); 565*ec452684SDaniel Beer MODULE_AUTHOR("Daniel Beer <daniel.beer@igorinstitute.com>"); 566*ec452684SDaniel Beer MODULE_DESCRIPTION("TAS5805M Audio Amplifier Driver"); 567*ec452684SDaniel Beer MODULE_LICENSE("GPL v2"); 568