1 // SPDX-License-Identifier: GPL-2.0 2 // Copyright 2019 NXP 3 4 #include <linux/bitrev.h> 5 #include <linux/clk.h> 6 #include <linux/firmware.h> 7 #include <linux/interrupt.h> 8 #include <linux/module.h> 9 #include <linux/of_platform.h> 10 #include <linux/pm_runtime.h> 11 #include <linux/regmap.h> 12 #include <linux/reset.h> 13 #include <sound/dmaengine_pcm.h> 14 #include <sound/pcm_iec958.h> 15 #include <sound/pcm_params.h> 16 17 #include "fsl_xcvr.h" 18 #include "fsl_utils.h" 19 #include "imx-pcm.h" 20 21 #define FSL_XCVR_CAPDS_SIZE 256 22 23 enum fsl_xcvr_pll_verison { 24 PLL_MX8MP, 25 PLL_MX95, 26 }; 27 28 struct fsl_xcvr_soc_data { 29 const char *fw_name; 30 bool spdif_only; 31 bool use_edma; 32 bool use_phy; 33 enum fsl_xcvr_pll_verison pll_ver; 34 }; 35 36 struct fsl_xcvr { 37 const struct fsl_xcvr_soc_data *soc_data; 38 struct platform_device *pdev; 39 struct regmap *regmap; 40 struct clk *ipg_clk; 41 struct clk *pll_ipg_clk; 42 struct clk *phy_clk; 43 struct clk *spba_clk; 44 struct clk *pll8k_clk; 45 struct clk *pll11k_clk; 46 struct reset_control *reset; 47 u8 streams; 48 u32 mode; 49 u32 arc_mode; 50 void __iomem *ram_addr; 51 struct snd_dmaengine_dai_dma_data dma_prms_rx; 52 struct snd_dmaengine_dai_dma_data dma_prms_tx; 53 struct snd_aes_iec958 rx_iec958; 54 struct snd_aes_iec958 tx_iec958; 55 u8 cap_ds[FSL_XCVR_CAPDS_SIZE]; 56 struct work_struct work_rst; 57 spinlock_t lock; /* Protect hw_reset and trigger */ 58 }; 59 60 static const struct fsl_xcvr_pll_conf { 61 u8 mfi; /* min=0x18, max=0x38 */ 62 u32 mfn; /* signed int, 2's compl., min=0x3FFF0000, max=0x00010000 */ 63 u32 mfd; /* unsigned int */ 64 u32 fout; /* Fout = Fref*(MFI + MFN/MFD), Fref is 24MHz */ 65 } fsl_xcvr_pll_cfg[] = { 66 { .mfi = 54, .mfn = 1, .mfd = 6, .fout = 1300000000, }, /* 1.3 GHz */ 67 { .mfi = 32, .mfn = 96, .mfd = 125, .fout = 786432000, }, /* 8000 Hz */ 68 { .mfi = 30, .mfn = 66, .mfd = 625, .fout = 722534400, }, /* 11025 Hz */ 69 { .mfi = 29, .mfn = 1, .mfd = 6, .fout = 700000000, }, /* 700 MHz */ 70 }; 71 72 /* 73 * HDMI2.1 spec defines 6- and 12-channels layout for one bit audio 74 * stream. Todo: to check how this case can be considered below 75 */ 76 static const u32 fsl_xcvr_earc_channels[] = { 1, 2, 8, 16, 32, }; 77 static const struct snd_pcm_hw_constraint_list fsl_xcvr_earc_channels_constr = { 78 .count = ARRAY_SIZE(fsl_xcvr_earc_channels), 79 .list = fsl_xcvr_earc_channels, 80 }; 81 82 static const u32 fsl_xcvr_earc_rates[] = { 83 32000, 44100, 48000, 64000, 88200, 96000, 84 128000, 176400, 192000, 256000, 352800, 384000, 85 512000, 705600, 768000, 1024000, 1411200, 1536000, 86 }; 87 static const struct snd_pcm_hw_constraint_list fsl_xcvr_earc_rates_constr = { 88 .count = ARRAY_SIZE(fsl_xcvr_earc_rates), 89 .list = fsl_xcvr_earc_rates, 90 }; 91 92 static const u32 fsl_xcvr_spdif_channels[] = { 2, }; 93 static const struct snd_pcm_hw_constraint_list fsl_xcvr_spdif_channels_constr = { 94 .count = ARRAY_SIZE(fsl_xcvr_spdif_channels), 95 .list = fsl_xcvr_spdif_channels, 96 }; 97 98 static const u32 fsl_xcvr_spdif_rates[] = { 99 32000, 44100, 48000, 88200, 96000, 176400, 192000, 100 }; 101 static const struct snd_pcm_hw_constraint_list fsl_xcvr_spdif_rates_constr = { 102 .count = ARRAY_SIZE(fsl_xcvr_spdif_rates), 103 .list = fsl_xcvr_spdif_rates, 104 }; 105 106 static int fsl_xcvr_arc_mode_put(struct snd_kcontrol *kcontrol, 107 struct snd_ctl_elem_value *ucontrol) 108 { 109 struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); 110 struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); 111 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; 112 unsigned int *item = ucontrol->value.enumerated.item; 113 114 xcvr->arc_mode = snd_soc_enum_item_to_val(e, item[0]); 115 116 return 0; 117 } 118 119 static int fsl_xcvr_arc_mode_get(struct snd_kcontrol *kcontrol, 120 struct snd_ctl_elem_value *ucontrol) 121 { 122 struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); 123 struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); 124 125 ucontrol->value.enumerated.item[0] = xcvr->arc_mode; 126 127 return 0; 128 } 129 130 static const u32 fsl_xcvr_phy_arc_cfg[] = { 131 FSL_XCVR_PHY_CTRL_ARC_MODE_SE_EN, FSL_XCVR_PHY_CTRL_ARC_MODE_CM_EN, 132 }; 133 134 static const char * const fsl_xcvr_arc_mode[] = { "Single Ended", "Common", }; 135 static const struct soc_enum fsl_xcvr_arc_mode_enum = 136 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(fsl_xcvr_arc_mode), fsl_xcvr_arc_mode); 137 static struct snd_kcontrol_new fsl_xcvr_arc_mode_kctl = 138 SOC_ENUM_EXT("ARC Mode", fsl_xcvr_arc_mode_enum, 139 fsl_xcvr_arc_mode_get, fsl_xcvr_arc_mode_put); 140 141 /* Capabilities data structure, bytes */ 142 static int fsl_xcvr_type_capds_bytes_info(struct snd_kcontrol *kcontrol, 143 struct snd_ctl_elem_info *uinfo) 144 { 145 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES; 146 uinfo->count = FSL_XCVR_CAPDS_SIZE; 147 148 return 0; 149 } 150 151 static int fsl_xcvr_capds_get(struct snd_kcontrol *kcontrol, 152 struct snd_ctl_elem_value *ucontrol) 153 { 154 struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); 155 struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); 156 157 memcpy(ucontrol->value.bytes.data, xcvr->cap_ds, FSL_XCVR_CAPDS_SIZE); 158 159 return 0; 160 } 161 162 static int fsl_xcvr_capds_put(struct snd_kcontrol *kcontrol, 163 struct snd_ctl_elem_value *ucontrol) 164 { 165 struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); 166 struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); 167 168 memcpy(xcvr->cap_ds, ucontrol->value.bytes.data, FSL_XCVR_CAPDS_SIZE); 169 170 return 0; 171 } 172 173 static struct snd_kcontrol_new fsl_xcvr_earc_capds_kctl = { 174 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 175 .name = "Capabilities Data Structure", 176 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 177 .info = fsl_xcvr_type_capds_bytes_info, 178 .get = fsl_xcvr_capds_get, 179 .put = fsl_xcvr_capds_put, 180 }; 181 182 static int fsl_xcvr_activate_ctl(struct snd_soc_dai *dai, const char *name, 183 bool active) 184 { 185 struct snd_soc_card *card = dai->component->card; 186 struct snd_kcontrol *kctl; 187 bool enabled; 188 189 lockdep_assert_held(&card->snd_card->controls_rwsem); 190 191 kctl = snd_soc_card_get_kcontrol(card, name); 192 if (kctl == NULL) 193 return -ENOENT; 194 195 enabled = ((kctl->vd[0].access & SNDRV_CTL_ELEM_ACCESS_WRITE) != 0); 196 if (active == enabled) 197 return 0; /* nothing to do */ 198 199 if (active) 200 kctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_WRITE; 201 else 202 kctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_WRITE; 203 204 snd_ctl_notify(card->snd_card, SNDRV_CTL_EVENT_MASK_INFO, &kctl->id); 205 206 return 1; 207 } 208 209 static int fsl_xcvr_mode_put(struct snd_kcontrol *kcontrol, 210 struct snd_ctl_elem_value *ucontrol) 211 { 212 struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); 213 struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); 214 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; 215 unsigned int *item = ucontrol->value.enumerated.item; 216 struct snd_soc_card *card = dai->component->card; 217 struct snd_soc_pcm_runtime *rtd; 218 219 xcvr->mode = snd_soc_enum_item_to_val(e, item[0]); 220 221 fsl_xcvr_activate_ctl(dai, fsl_xcvr_arc_mode_kctl.name, 222 (xcvr->mode == FSL_XCVR_MODE_ARC)); 223 fsl_xcvr_activate_ctl(dai, fsl_xcvr_earc_capds_kctl.name, 224 (xcvr->mode == FSL_XCVR_MODE_EARC)); 225 /* Allow playback for SPDIF only */ 226 rtd = snd_soc_get_pcm_runtime(card, card->dai_link); 227 rtd->pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count = 228 (xcvr->mode == FSL_XCVR_MODE_SPDIF ? 1 : 0); 229 return 0; 230 } 231 232 static int fsl_xcvr_mode_get(struct snd_kcontrol *kcontrol, 233 struct snd_ctl_elem_value *ucontrol) 234 { 235 struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); 236 struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); 237 238 ucontrol->value.enumerated.item[0] = xcvr->mode; 239 240 return 0; 241 } 242 243 static const char * const fsl_xcvr_mode[] = { "SPDIF", "ARC RX", "eARC", }; 244 static const struct soc_enum fsl_xcvr_mode_enum = 245 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(fsl_xcvr_mode), fsl_xcvr_mode); 246 static struct snd_kcontrol_new fsl_xcvr_mode_kctl = 247 SOC_ENUM_EXT("XCVR Mode", fsl_xcvr_mode_enum, 248 fsl_xcvr_mode_get, fsl_xcvr_mode_put); 249 250 /** phy: true => phy, false => pll */ 251 static int fsl_xcvr_ai_write(struct fsl_xcvr *xcvr, u8 reg, u32 data, bool phy) 252 { 253 struct device *dev = &xcvr->pdev->dev; 254 u32 val, idx, tidx; 255 int ret; 256 257 idx = BIT(phy ? 26 : 24); 258 tidx = BIT(phy ? 27 : 25); 259 260 regmap_write(xcvr->regmap, FSL_XCVR_PHY_AI_CTRL_CLR, 0xFF); 261 regmap_write(xcvr->regmap, FSL_XCVR_PHY_AI_CTRL_SET, reg); 262 regmap_write(xcvr->regmap, FSL_XCVR_PHY_AI_WDATA, data); 263 regmap_write(xcvr->regmap, FSL_XCVR_PHY_AI_CTRL_TOG, idx); 264 265 ret = regmap_read_poll_timeout(xcvr->regmap, FSL_XCVR_PHY_AI_CTRL, val, 266 (val & idx) == ((val & tidx) >> 1), 267 10, 10000); 268 if (ret) 269 dev_err(dev, "AI timeout: failed to set %s reg 0x%02x=0x%08x\n", 270 phy ? "PHY" : "PLL", reg, data); 271 return ret; 272 } 273 274 static int fsl_xcvr_en_phy_pll(struct fsl_xcvr *xcvr, u32 freq, bool tx) 275 { 276 struct device *dev = &xcvr->pdev->dev; 277 u32 i, div = 0, log2, val; 278 int ret; 279 280 if (!xcvr->soc_data->use_phy) 281 return 0; 282 283 for (i = 0; i < ARRAY_SIZE(fsl_xcvr_pll_cfg); i++) { 284 if (fsl_xcvr_pll_cfg[i].fout % freq == 0) { 285 div = fsl_xcvr_pll_cfg[i].fout / freq; 286 break; 287 } 288 } 289 290 if (!div || i >= ARRAY_SIZE(fsl_xcvr_pll_cfg)) 291 return -EINVAL; 292 293 log2 = ilog2(div); 294 295 /* Release AI interface from reset */ 296 ret = regmap_write(xcvr->regmap, FSL_XCVR_PHY_AI_CTRL_SET, 297 FSL_XCVR_PHY_AI_CTRL_AI_RESETN); 298 if (ret < 0) { 299 dev_err(dev, "Error while setting IER0: %d\n", ret); 300 return ret; 301 } 302 303 switch (xcvr->soc_data->pll_ver) { 304 case PLL_MX8MP: 305 /* PLL: BANDGAP_SET: EN_VBG (enable bandgap) */ 306 fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_BANDGAP_SET, 307 FSL_XCVR_PLL_BANDGAP_EN_VBG, 0); 308 309 /* PLL: CTRL0: DIV_INTEGER */ 310 fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_CTRL0, fsl_xcvr_pll_cfg[i].mfi, 0); 311 /* PLL: NUMERATOR: MFN */ 312 fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_NUM, fsl_xcvr_pll_cfg[i].mfn, 0); 313 /* PLL: DENOMINATOR: MFD */ 314 fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_DEN, fsl_xcvr_pll_cfg[i].mfd, 0); 315 /* PLL: CTRL0_SET: HOLD_RING_OFF, POWER_UP */ 316 fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_CTRL0_SET, 317 FSL_XCVR_PLL_CTRL0_HROFF | FSL_XCVR_PLL_CTRL0_PWP, 0); 318 udelay(25); 319 /* PLL: CTRL0: Clear Hold Ring Off */ 320 fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_CTRL0_CLR, 321 FSL_XCVR_PLL_CTRL0_HROFF, 0); 322 udelay(100); 323 if (tx) { /* TX is enabled for SPDIF only */ 324 /* PLL: POSTDIV: PDIV0 */ 325 fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_PDIV, 326 FSL_XCVR_PLL_PDIVx(log2, 0), 0); 327 /* PLL: CTRL_SET: CLKMUX0_EN */ 328 fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_CTRL0_SET, 329 FSL_XCVR_PLL_CTRL0_CM0_EN, 0); 330 } else if (xcvr->mode == FSL_XCVR_MODE_EARC) { /* eARC RX */ 331 /* PLL: POSTDIV: PDIV1 */ 332 fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_PDIV, 333 FSL_XCVR_PLL_PDIVx(log2, 1), 0); 334 /* PLL: CTRL_SET: CLKMUX1_EN */ 335 fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_CTRL0_SET, 336 FSL_XCVR_PLL_CTRL0_CM1_EN, 0); 337 } else { /* SPDIF / ARC RX */ 338 /* PLL: POSTDIV: PDIV2 */ 339 fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_PDIV, 340 FSL_XCVR_PLL_PDIVx(log2, 2), 0); 341 /* PLL: CTRL_SET: CLKMUX2_EN */ 342 fsl_xcvr_ai_write(xcvr, FSL_XCVR_PLL_CTRL0_SET, 343 FSL_XCVR_PLL_CTRL0_CM2_EN, 0); 344 } 345 break; 346 case PLL_MX95: 347 val = fsl_xcvr_pll_cfg[i].mfi << FSL_XCVR_GP_PLL_DIV_MFI_SHIFT | div; 348 fsl_xcvr_ai_write(xcvr, FSL_XCVR_GP_PLL_DIV, val, 0); 349 val = fsl_xcvr_pll_cfg[i].mfn << FSL_XCVR_GP_PLL_NUMERATOR_MFN_SHIFT; 350 fsl_xcvr_ai_write(xcvr, FSL_XCVR_GP_PLL_NUMERATOR, val, 0); 351 fsl_xcvr_ai_write(xcvr, FSL_XCVR_GP_PLL_DENOMINATOR, 352 fsl_xcvr_pll_cfg[i].mfd, 0); 353 val = FSL_XCVR_GP_PLL_CTRL_POWERUP | FSL_XCVR_GP_PLL_CTRL_CLKMUX_EN; 354 fsl_xcvr_ai_write(xcvr, FSL_XCVR_GP_PLL_CTRL, val, 0); 355 break; 356 default: 357 dev_err(dev, "Error for PLL version %d\n", xcvr->soc_data->pll_ver); 358 return -EINVAL; 359 } 360 361 if (xcvr->mode == FSL_XCVR_MODE_EARC) { /* eARC mode */ 362 /* PHY: CTRL_SET: TX_DIFF_OE, PHY_EN */ 363 fsl_xcvr_ai_write(xcvr, FSL_XCVR_PHY_CTRL_SET, 364 FSL_XCVR_PHY_CTRL_TSDIFF_OE | 365 FSL_XCVR_PHY_CTRL_PHY_EN, 1); 366 /* PHY: CTRL2_SET: EARC_TX_MODE */ 367 fsl_xcvr_ai_write(xcvr, FSL_XCVR_PHY_CTRL2_SET, 368 FSL_XCVR_PHY_CTRL2_EARC_TXMS, 1); 369 } else if (!tx) { /* SPDIF / ARC RX mode */ 370 if (xcvr->mode == FSL_XCVR_MODE_SPDIF) 371 /* PHY: CTRL_SET: SPDIF_EN */ 372 fsl_xcvr_ai_write(xcvr, FSL_XCVR_PHY_CTRL_SET, 373 FSL_XCVR_PHY_CTRL_SPDIF_EN, 1); 374 else /* PHY: CTRL_SET: ARC RX setup */ 375 fsl_xcvr_ai_write(xcvr, FSL_XCVR_PHY_CTRL_SET, 376 FSL_XCVR_PHY_CTRL_PHY_EN | 377 FSL_XCVR_PHY_CTRL_RX_CM_EN | 378 fsl_xcvr_phy_arc_cfg[xcvr->arc_mode], 1); 379 } 380 381 dev_dbg(dev, "PLL Fexp: %u, Fout: %u, mfi: %u, mfn: %u, mfd: %d, div: %u, pdiv0: %u\n", 382 freq, fsl_xcvr_pll_cfg[i].fout, fsl_xcvr_pll_cfg[i].mfi, 383 fsl_xcvr_pll_cfg[i].mfn, fsl_xcvr_pll_cfg[i].mfd, div, log2); 384 return 0; 385 } 386 387 static int fsl_xcvr_en_aud_pll(struct fsl_xcvr *xcvr, u32 freq) 388 { 389 struct device *dev = &xcvr->pdev->dev; 390 int ret; 391 392 freq = xcvr->soc_data->spdif_only ? freq / 5 : freq; 393 clk_disable_unprepare(xcvr->phy_clk); 394 fsl_asoc_reparent_pll_clocks(dev, xcvr->phy_clk, 395 xcvr->pll8k_clk, xcvr->pll11k_clk, freq); 396 ret = clk_set_rate(xcvr->phy_clk, freq); 397 if (ret < 0) { 398 dev_err(dev, "Error while setting AUD PLL rate: %d\n", ret); 399 return ret; 400 } 401 ret = clk_prepare_enable(xcvr->phy_clk); 402 if (ret) { 403 dev_err(dev, "failed to start PHY clock: %d\n", ret); 404 return ret; 405 } 406 407 if (!xcvr->soc_data->use_phy) 408 return 0; 409 /* Release AI interface from reset */ 410 ret = regmap_write(xcvr->regmap, FSL_XCVR_PHY_AI_CTRL_SET, 411 FSL_XCVR_PHY_AI_CTRL_AI_RESETN); 412 if (ret < 0) { 413 dev_err(dev, "Error while setting IER0: %d\n", ret); 414 return ret; 415 } 416 417 if (xcvr->mode == FSL_XCVR_MODE_EARC) { /* eARC mode */ 418 /* PHY: CTRL_SET: TX_DIFF_OE, PHY_EN */ 419 fsl_xcvr_ai_write(xcvr, FSL_XCVR_PHY_CTRL_SET, 420 FSL_XCVR_PHY_CTRL_TSDIFF_OE | 421 FSL_XCVR_PHY_CTRL_PHY_EN, 1); 422 /* PHY: CTRL2_SET: EARC_TX_MODE */ 423 fsl_xcvr_ai_write(xcvr, FSL_XCVR_PHY_CTRL2_SET, 424 FSL_XCVR_PHY_CTRL2_EARC_TXMS, 1); 425 } else { /* SPDIF mode */ 426 /* PHY: CTRL_SET: TX_CLK_AUD_SS | SPDIF_EN */ 427 fsl_xcvr_ai_write(xcvr, FSL_XCVR_PHY_CTRL_SET, 428 FSL_XCVR_PHY_CTRL_TX_CLK_AUD_SS | 429 FSL_XCVR_PHY_CTRL_SPDIF_EN, 1); 430 } 431 432 dev_dbg(dev, "PLL Fexp: %u\n", freq); 433 434 return 0; 435 } 436 437 #define FSL_XCVR_SPDIF_RX_FREQ 175000000 438 static int fsl_xcvr_prepare(struct snd_pcm_substream *substream, 439 struct snd_soc_dai *dai) 440 { 441 struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); 442 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 443 u32 m_ctl = 0, v_ctl = 0; 444 u32 r = substream->runtime->rate, ch = substream->runtime->channels; 445 u32 fout = 32 * r * ch * 10; 446 int ret = 0; 447 448 switch (xcvr->mode) { 449 case FSL_XCVR_MODE_SPDIF: 450 if (xcvr->soc_data->spdif_only && tx) { 451 ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_TX_DPTH_CTRL_SET, 452 FSL_XCVR_TX_DPTH_CTRL_BYPASS_FEM, 453 FSL_XCVR_TX_DPTH_CTRL_BYPASS_FEM); 454 if (ret < 0) { 455 dev_err(dai->dev, "Failed to set bypass fem: %d\n", ret); 456 return ret; 457 } 458 } 459 fallthrough; 460 case FSL_XCVR_MODE_ARC: 461 if (tx) { 462 ret = fsl_xcvr_en_aud_pll(xcvr, fout); 463 if (ret < 0) { 464 dev_err(dai->dev, "Failed to set TX freq %u: %d\n", 465 fout, ret); 466 return ret; 467 } 468 469 ret = regmap_write(xcvr->regmap, FSL_XCVR_TX_DPTH_CTRL_SET, 470 FSL_XCVR_TX_DPTH_CTRL_FRM_FMT); 471 if (ret < 0) { 472 dev_err(dai->dev, "Failed to set TX_DPTH: %d\n", ret); 473 return ret; 474 } 475 476 /** 477 * set SPDIF MODE - this flag is used to gate 478 * SPDIF output, useless for SPDIF RX 479 */ 480 m_ctl |= FSL_XCVR_EXT_CTRL_SPDIF_MODE; 481 v_ctl |= FSL_XCVR_EXT_CTRL_SPDIF_MODE; 482 } else { 483 /** 484 * Clear RX FIFO, flip RX FIFO bits, 485 * disable eARC related HW mode detects 486 */ 487 ret = regmap_write(xcvr->regmap, FSL_XCVR_RX_DPTH_CTRL_SET, 488 FSL_XCVR_RX_DPTH_CTRL_STORE_FMT | 489 FSL_XCVR_RX_DPTH_CTRL_CLR_RX_FIFO | 490 FSL_XCVR_RX_DPTH_CTRL_COMP | 491 FSL_XCVR_RX_DPTH_CTRL_LAYB_CTRL); 492 if (ret < 0) { 493 dev_err(dai->dev, "Failed to set RX_DPTH: %d\n", ret); 494 return ret; 495 } 496 497 ret = fsl_xcvr_en_phy_pll(xcvr, FSL_XCVR_SPDIF_RX_FREQ, tx); 498 if (ret < 0) { 499 dev_err(dai->dev, "Failed to set RX freq %u: %d\n", 500 FSL_XCVR_SPDIF_RX_FREQ, ret); 501 return ret; 502 } 503 } 504 break; 505 case FSL_XCVR_MODE_EARC: 506 if (!tx) { 507 /** Clear RX FIFO, flip RX FIFO bits */ 508 ret = regmap_write(xcvr->regmap, FSL_XCVR_RX_DPTH_CTRL_SET, 509 FSL_XCVR_RX_DPTH_CTRL_STORE_FMT | 510 FSL_XCVR_RX_DPTH_CTRL_CLR_RX_FIFO); 511 if (ret < 0) { 512 dev_err(dai->dev, "Failed to set RX_DPTH: %d\n", ret); 513 return ret; 514 } 515 516 /** Enable eARC related HW mode detects */ 517 ret = regmap_write(xcvr->regmap, FSL_XCVR_RX_DPTH_CTRL_CLR, 518 FSL_XCVR_RX_DPTH_CTRL_COMP | 519 FSL_XCVR_RX_DPTH_CTRL_LAYB_CTRL); 520 if (ret < 0) { 521 dev_err(dai->dev, "Failed to clr TX_DPTH: %d\n", ret); 522 return ret; 523 } 524 } 525 526 /* clear CMDC RESET */ 527 m_ctl |= FSL_XCVR_EXT_CTRL_CMDC_RESET(tx); 528 /* set TX_RX_MODE */ 529 m_ctl |= FSL_XCVR_EXT_CTRL_TX_RX_MODE; 530 v_ctl |= (tx ? FSL_XCVR_EXT_CTRL_TX_RX_MODE : 0); 531 break; 532 } 533 534 ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, m_ctl, v_ctl); 535 if (ret < 0) { 536 dev_err(dai->dev, "Error while setting EXT_CTRL: %d\n", ret); 537 return ret; 538 } 539 540 return 0; 541 } 542 543 static int fsl_xcvr_constr(const struct snd_pcm_substream *substream, 544 const struct snd_pcm_hw_constraint_list *channels, 545 const struct snd_pcm_hw_constraint_list *rates) 546 { 547 struct snd_pcm_runtime *rt = substream->runtime; 548 int ret; 549 550 ret = snd_pcm_hw_constraint_list(rt, 0, SNDRV_PCM_HW_PARAM_CHANNELS, 551 channels); 552 if (ret < 0) 553 return ret; 554 555 ret = snd_pcm_hw_constraint_list(rt, 0, SNDRV_PCM_HW_PARAM_RATE, 556 rates); 557 if (ret < 0) 558 return ret; 559 560 return 0; 561 } 562 563 static int fsl_xcvr_startup(struct snd_pcm_substream *substream, 564 struct snd_soc_dai *dai) 565 { 566 struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); 567 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 568 int ret = 0; 569 570 if (xcvr->streams & BIT(substream->stream)) { 571 dev_err(dai->dev, "%sX busy\n", tx ? "T" : "R"); 572 return -EBUSY; 573 } 574 575 /* 576 * EDMA controller needs period size to be a multiple of 577 * tx/rx maxburst 578 */ 579 if (xcvr->soc_data->use_edma) 580 snd_pcm_hw_constraint_step(substream->runtime, 0, 581 SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 582 tx ? xcvr->dma_prms_tx.maxburst : 583 xcvr->dma_prms_rx.maxburst); 584 585 switch (xcvr->mode) { 586 case FSL_XCVR_MODE_SPDIF: 587 case FSL_XCVR_MODE_ARC: 588 ret = fsl_xcvr_constr(substream, &fsl_xcvr_spdif_channels_constr, 589 &fsl_xcvr_spdif_rates_constr); 590 break; 591 case FSL_XCVR_MODE_EARC: 592 ret = fsl_xcvr_constr(substream, &fsl_xcvr_earc_channels_constr, 593 &fsl_xcvr_earc_rates_constr); 594 break; 595 } 596 if (ret < 0) 597 return ret; 598 599 xcvr->streams |= BIT(substream->stream); 600 601 if (!xcvr->soc_data->spdif_only) { 602 struct snd_soc_card *card = dai->component->card; 603 604 /* Disable XCVR controls if there is stream started */ 605 down_read(&card->snd_card->controls_rwsem); 606 fsl_xcvr_activate_ctl(dai, fsl_xcvr_mode_kctl.name, false); 607 fsl_xcvr_activate_ctl(dai, fsl_xcvr_arc_mode_kctl.name, false); 608 fsl_xcvr_activate_ctl(dai, fsl_xcvr_earc_capds_kctl.name, false); 609 up_read(&card->snd_card->controls_rwsem); 610 } 611 612 return 0; 613 } 614 615 static void fsl_xcvr_shutdown(struct snd_pcm_substream *substream, 616 struct snd_soc_dai *dai) 617 { 618 struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); 619 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 620 u32 mask = 0, val = 0; 621 int ret; 622 623 xcvr->streams &= ~BIT(substream->stream); 624 625 /* Enable XCVR controls if there is no stream started */ 626 if (!xcvr->streams) { 627 if (!xcvr->soc_data->spdif_only) { 628 struct snd_soc_card *card = dai->component->card; 629 630 down_read(&card->snd_card->controls_rwsem); 631 fsl_xcvr_activate_ctl(dai, fsl_xcvr_mode_kctl.name, true); 632 fsl_xcvr_activate_ctl(dai, fsl_xcvr_arc_mode_kctl.name, 633 (xcvr->mode == FSL_XCVR_MODE_ARC)); 634 fsl_xcvr_activate_ctl(dai, fsl_xcvr_earc_capds_kctl.name, 635 (xcvr->mode == FSL_XCVR_MODE_EARC)); 636 up_read(&card->snd_card->controls_rwsem); 637 } 638 ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_IER0, 639 FSL_XCVR_IRQ_EARC_ALL, 0); 640 if (ret < 0) { 641 dev_err(dai->dev, "Failed to set IER0: %d\n", ret); 642 return; 643 } 644 645 /* clear SPDIF MODE */ 646 if (xcvr->mode == FSL_XCVR_MODE_SPDIF) 647 mask |= FSL_XCVR_EXT_CTRL_SPDIF_MODE; 648 } 649 650 if (xcvr->mode == FSL_XCVR_MODE_EARC) { 651 /* set CMDC RESET */ 652 mask |= FSL_XCVR_EXT_CTRL_CMDC_RESET(tx); 653 val |= FSL_XCVR_EXT_CTRL_CMDC_RESET(tx); 654 } 655 656 ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, mask, val); 657 if (ret < 0) { 658 dev_err(dai->dev, "Err setting DPATH RESET: %d\n", ret); 659 return; 660 } 661 } 662 663 static int fsl_xcvr_trigger(struct snd_pcm_substream *substream, int cmd, 664 struct snd_soc_dai *dai) 665 { 666 struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); 667 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 668 unsigned long lock_flags; 669 int ret = 0; 670 671 spin_lock_irqsave(&xcvr->lock, lock_flags); 672 673 switch (cmd) { 674 case SNDRV_PCM_TRIGGER_START: 675 case SNDRV_PCM_TRIGGER_RESUME: 676 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 677 /* set DPATH RESET */ 678 ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, 679 FSL_XCVR_EXT_CTRL_DPTH_RESET(tx), 680 FSL_XCVR_EXT_CTRL_DPTH_RESET(tx)); 681 if (ret < 0) { 682 dev_err(dai->dev, "Failed to set DPATH RESET: %d\n", ret); 683 goto release_lock; 684 } 685 686 if (tx) { 687 switch (xcvr->mode) { 688 case FSL_XCVR_MODE_EARC: 689 /* set isr_cmdc_tx_en, w1c */ 690 ret = regmap_write(xcvr->regmap, 691 FSL_XCVR_ISR_SET, 692 FSL_XCVR_ISR_CMDC_TX_EN); 693 if (ret < 0) { 694 dev_err(dai->dev, "err updating isr %d\n", ret); 695 goto release_lock; 696 } 697 fallthrough; 698 case FSL_XCVR_MODE_SPDIF: 699 ret = regmap_write(xcvr->regmap, 700 FSL_XCVR_TX_DPTH_CTRL_SET, 701 FSL_XCVR_TX_DPTH_CTRL_STRT_DATA_TX); 702 if (ret < 0) { 703 dev_err(dai->dev, "Failed to start DATA_TX: %d\n", ret); 704 goto release_lock; 705 } 706 break; 707 } 708 } 709 710 /* enable DMA RD/WR */ 711 ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, 712 FSL_XCVR_EXT_CTRL_DMA_DIS(tx), 0); 713 if (ret < 0) { 714 dev_err(dai->dev, "Failed to enable DMA: %d\n", ret); 715 goto release_lock; 716 } 717 718 ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_IER0, 719 FSL_XCVR_IRQ_EARC_ALL, FSL_XCVR_IRQ_EARC_ALL); 720 if (ret < 0) { 721 dev_err(dai->dev, "Error while setting IER0: %d\n", ret); 722 goto release_lock; 723 } 724 725 /* clear DPATH RESET */ 726 ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, 727 FSL_XCVR_EXT_CTRL_DPTH_RESET(tx), 728 0); 729 if (ret < 0) { 730 dev_err(dai->dev, "Failed to clear DPATH RESET: %d\n", ret); 731 goto release_lock; 732 } 733 734 break; 735 case SNDRV_PCM_TRIGGER_STOP: 736 case SNDRV_PCM_TRIGGER_SUSPEND: 737 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 738 /* disable DMA RD/WR */ 739 ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, 740 FSL_XCVR_EXT_CTRL_DMA_DIS(tx), 741 FSL_XCVR_EXT_CTRL_DMA_DIS(tx)); 742 if (ret < 0) { 743 dev_err(dai->dev, "Failed to disable DMA: %d\n", ret); 744 goto release_lock; 745 } 746 747 ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_IER0, 748 FSL_XCVR_IRQ_EARC_ALL, 0); 749 if (ret < 0) { 750 dev_err(dai->dev, "Failed to clear IER0: %d\n", ret); 751 goto release_lock; 752 } 753 754 if (tx) { 755 switch (xcvr->mode) { 756 case FSL_XCVR_MODE_SPDIF: 757 ret = regmap_write(xcvr->regmap, 758 FSL_XCVR_TX_DPTH_CTRL_CLR, 759 FSL_XCVR_TX_DPTH_CTRL_STRT_DATA_TX); 760 if (ret < 0) { 761 dev_err(dai->dev, "Failed to stop DATA_TX: %d\n", ret); 762 goto release_lock; 763 } 764 if (xcvr->soc_data->spdif_only) 765 break; 766 else 767 fallthrough; 768 case FSL_XCVR_MODE_EARC: 769 /* clear ISR_CMDC_TX_EN, W1C */ 770 ret = regmap_write(xcvr->regmap, 771 FSL_XCVR_ISR_CLR, 772 FSL_XCVR_ISR_CMDC_TX_EN); 773 if (ret < 0) { 774 dev_err(dai->dev, 775 "Err updating ISR %d\n", ret); 776 goto release_lock; 777 } 778 break; 779 } 780 } 781 break; 782 default: 783 ret = -EINVAL; 784 break; 785 } 786 787 release_lock: 788 spin_unlock_irqrestore(&xcvr->lock, lock_flags); 789 return ret; 790 } 791 792 static int fsl_xcvr_load_firmware(struct fsl_xcvr *xcvr) 793 { 794 struct device *dev = &xcvr->pdev->dev; 795 const struct firmware *fw; 796 int ret = 0, rem, off, out, page = 0, size = FSL_XCVR_REG_OFFSET; 797 u32 mask, val; 798 799 ret = request_firmware(&fw, xcvr->soc_data->fw_name, dev); 800 if (ret) { 801 dev_err(dev, "failed to request firmware.\n"); 802 return ret; 803 } 804 805 rem = fw->size; 806 807 /* RAM is 20KiB = 16KiB code + 4KiB data => max 10 pages 2KiB each */ 808 if (rem > 16384) { 809 dev_err(dev, "FW size %d is bigger than 16KiB.\n", rem); 810 release_firmware(fw); 811 return -ENOMEM; 812 } 813 814 for (page = 0; page < 10; page++) { 815 ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, 816 FSL_XCVR_EXT_CTRL_PAGE_MASK, 817 FSL_XCVR_EXT_CTRL_PAGE(page)); 818 if (ret < 0) { 819 dev_err(dev, "FW: failed to set page %d, err=%d\n", 820 page, ret); 821 goto err_firmware; 822 } 823 824 off = page * size; 825 out = min(rem, size); 826 /* IPG clock is assumed to be running, otherwise it will hang */ 827 if (out > 0) { 828 /* write firmware into code memory */ 829 memcpy_toio(xcvr->ram_addr, fw->data + off, out); 830 rem -= out; 831 if (rem == 0) { 832 /* last part of firmware written */ 833 /* clean remaining part of code memory page */ 834 memset_io(xcvr->ram_addr + out, 0, size - out); 835 } 836 } else { 837 /* clean current page, including data memory */ 838 memset_io(xcvr->ram_addr, 0, size); 839 } 840 } 841 842 err_firmware: 843 release_firmware(fw); 844 if (ret < 0) 845 return ret; 846 847 /* configure watermarks */ 848 mask = FSL_XCVR_EXT_CTRL_RX_FWM_MASK | FSL_XCVR_EXT_CTRL_TX_FWM_MASK; 849 val = FSL_XCVR_EXT_CTRL_RX_FWM(FSL_XCVR_FIFO_WMK_RX); 850 val |= FSL_XCVR_EXT_CTRL_TX_FWM(FSL_XCVR_FIFO_WMK_TX); 851 /* disable DMA RD/WR */ 852 mask |= FSL_XCVR_EXT_CTRL_DMA_RD_DIS | FSL_XCVR_EXT_CTRL_DMA_WR_DIS; 853 val |= FSL_XCVR_EXT_CTRL_DMA_RD_DIS | FSL_XCVR_EXT_CTRL_DMA_WR_DIS; 854 /* Data RAM is 4KiB, last two pages: 8 and 9. Select page 8. */ 855 mask |= FSL_XCVR_EXT_CTRL_PAGE_MASK; 856 val |= FSL_XCVR_EXT_CTRL_PAGE(8); 857 858 ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, mask, val); 859 if (ret < 0) { 860 dev_err(dev, "Failed to set watermarks: %d\n", ret); 861 return ret; 862 } 863 864 /* Store Capabilities Data Structure into Data RAM */ 865 memcpy_toio(xcvr->ram_addr + FSL_XCVR_CAP_DATA_STR, xcvr->cap_ds, 866 FSL_XCVR_CAPDS_SIZE); 867 return 0; 868 } 869 870 static int fsl_xcvr_type_iec958_info(struct snd_kcontrol *kcontrol, 871 struct snd_ctl_elem_info *uinfo) 872 { 873 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; 874 uinfo->count = 1; 875 876 return 0; 877 } 878 879 static int fsl_xcvr_type_iec958_bytes_info(struct snd_kcontrol *kcontrol, 880 struct snd_ctl_elem_info *uinfo) 881 { 882 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES; 883 uinfo->count = sizeof_field(struct snd_aes_iec958, status); 884 885 return 0; 886 } 887 888 static int fsl_xcvr_rx_cs_get(struct snd_kcontrol *kcontrol, 889 struct snd_ctl_elem_value *ucontrol) 890 { 891 struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); 892 struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); 893 894 memcpy(ucontrol->value.iec958.status, xcvr->rx_iec958.status, 24); 895 896 return 0; 897 } 898 899 static int fsl_xcvr_tx_cs_get(struct snd_kcontrol *kcontrol, 900 struct snd_ctl_elem_value *ucontrol) 901 { 902 struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); 903 struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); 904 905 memcpy(ucontrol->value.iec958.status, xcvr->tx_iec958.status, 24); 906 907 return 0; 908 } 909 910 static int fsl_xcvr_tx_cs_put(struct snd_kcontrol *kcontrol, 911 struct snd_ctl_elem_value *ucontrol) 912 { 913 struct snd_soc_dai *dai = snd_kcontrol_chip(kcontrol); 914 struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); 915 916 memcpy(xcvr->tx_iec958.status, ucontrol->value.iec958.status, 24); 917 918 return 0; 919 } 920 921 static struct snd_kcontrol_new fsl_xcvr_rx_ctls[] = { 922 /* Channel status controller */ 923 { 924 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 925 .name = SNDRV_CTL_NAME_IEC958("", CAPTURE, DEFAULT), 926 .access = SNDRV_CTL_ELEM_ACCESS_READ, 927 .info = fsl_xcvr_type_iec958_info, 928 .get = fsl_xcvr_rx_cs_get, 929 }, 930 /* Capture channel status, bytes */ 931 { 932 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 933 .name = "Capture Channel Status", 934 .access = SNDRV_CTL_ELEM_ACCESS_READ, 935 .info = fsl_xcvr_type_iec958_bytes_info, 936 .get = fsl_xcvr_rx_cs_get, 937 }, 938 }; 939 940 static struct snd_kcontrol_new fsl_xcvr_tx_ctls[] = { 941 /* Channel status controller */ 942 { 943 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 944 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT), 945 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 946 .info = fsl_xcvr_type_iec958_info, 947 .get = fsl_xcvr_tx_cs_get, 948 .put = fsl_xcvr_tx_cs_put, 949 }, 950 /* Playback channel status, bytes */ 951 { 952 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 953 .name = "Playback Channel Status", 954 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, 955 .info = fsl_xcvr_type_iec958_bytes_info, 956 .get = fsl_xcvr_tx_cs_get, 957 .put = fsl_xcvr_tx_cs_put, 958 }, 959 }; 960 961 static int fsl_xcvr_dai_probe(struct snd_soc_dai *dai) 962 { 963 struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); 964 965 snd_soc_dai_init_dma_data(dai, &xcvr->dma_prms_tx, &xcvr->dma_prms_rx); 966 967 if (xcvr->soc_data->spdif_only) 968 xcvr->mode = FSL_XCVR_MODE_SPDIF; 969 else { 970 snd_soc_add_dai_controls(dai, &fsl_xcvr_mode_kctl, 1); 971 snd_soc_add_dai_controls(dai, &fsl_xcvr_arc_mode_kctl, 1); 972 snd_soc_add_dai_controls(dai, &fsl_xcvr_earc_capds_kctl, 1); 973 } 974 snd_soc_add_dai_controls(dai, fsl_xcvr_tx_ctls, 975 ARRAY_SIZE(fsl_xcvr_tx_ctls)); 976 snd_soc_add_dai_controls(dai, fsl_xcvr_rx_ctls, 977 ARRAY_SIZE(fsl_xcvr_rx_ctls)); 978 return 0; 979 } 980 981 static const struct snd_soc_dai_ops fsl_xcvr_dai_ops = { 982 .probe = fsl_xcvr_dai_probe, 983 .prepare = fsl_xcvr_prepare, 984 .startup = fsl_xcvr_startup, 985 .shutdown = fsl_xcvr_shutdown, 986 .trigger = fsl_xcvr_trigger, 987 }; 988 989 static struct snd_soc_dai_driver fsl_xcvr_dai = { 990 .ops = &fsl_xcvr_dai_ops, 991 .playback = { 992 .stream_name = "CPU-Playback", 993 .channels_min = 1, 994 .channels_max = 32, 995 .rate_min = 32000, 996 .rate_max = 1536000, 997 .rates = SNDRV_PCM_RATE_KNOT, 998 .formats = SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE, 999 }, 1000 .capture = { 1001 .stream_name = "CPU-Capture", 1002 .channels_min = 1, 1003 .channels_max = 32, 1004 .rate_min = 32000, 1005 .rate_max = 1536000, 1006 .rates = SNDRV_PCM_RATE_KNOT, 1007 .formats = SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE, 1008 }, 1009 }; 1010 1011 static const struct snd_soc_component_driver fsl_xcvr_comp = { 1012 .name = "fsl-xcvr-dai", 1013 .legacy_dai_naming = 1, 1014 }; 1015 1016 static const struct reg_default fsl_xcvr_reg_defaults[] = { 1017 { FSL_XCVR_VERSION, 0x00000000 }, 1018 { FSL_XCVR_EXT_CTRL, 0xF8204040 }, 1019 { FSL_XCVR_EXT_STATUS, 0x00000000 }, 1020 { FSL_XCVR_EXT_IER0, 0x00000000 }, 1021 { FSL_XCVR_EXT_IER1, 0x00000000 }, 1022 { FSL_XCVR_EXT_ISR, 0x00000000 }, 1023 { FSL_XCVR_EXT_ISR_SET, 0x00000000 }, 1024 { FSL_XCVR_EXT_ISR_CLR, 0x00000000 }, 1025 { FSL_XCVR_EXT_ISR_TOG, 0x00000000 }, 1026 { FSL_XCVR_IER, 0x00000000 }, 1027 { FSL_XCVR_ISR, 0x00000000 }, 1028 { FSL_XCVR_ISR_SET, 0x00000000 }, 1029 { FSL_XCVR_ISR_CLR, 0x00000000 }, 1030 { FSL_XCVR_ISR_TOG, 0x00000000 }, 1031 { FSL_XCVR_CLK_CTRL, 0x0000018F }, 1032 { FSL_XCVR_RX_DPTH_CTRL, 0x00040CC1 }, 1033 { FSL_XCVR_RX_DPTH_CTRL_SET, 0x00040CC1 }, 1034 { FSL_XCVR_RX_DPTH_CTRL_CLR, 0x00040CC1 }, 1035 { FSL_XCVR_RX_DPTH_CTRL_TOG, 0x00040CC1 }, 1036 { FSL_XCVR_RX_DPTH_CNTR_CTRL, 0x00000000 }, 1037 { FSL_XCVR_RX_DPTH_CNTR_CTRL_SET, 0x00000000 }, 1038 { FSL_XCVR_RX_DPTH_CNTR_CTRL_CLR, 0x00000000 }, 1039 { FSL_XCVR_RX_DPTH_CNTR_CTRL_TOG, 0x00000000 }, 1040 { FSL_XCVR_RX_DPTH_TSCR, 0x00000000 }, 1041 { FSL_XCVR_RX_DPTH_BCR, 0x00000000 }, 1042 { FSL_XCVR_RX_DPTH_BCTR, 0x00000000 }, 1043 { FSL_XCVR_RX_DPTH_BCRR, 0x00000000 }, 1044 { FSL_XCVR_TX_DPTH_CTRL, 0x00000000 }, 1045 { FSL_XCVR_TX_DPTH_CTRL_SET, 0x00000000 }, 1046 { FSL_XCVR_TX_DPTH_CTRL_CLR, 0x00000000 }, 1047 { FSL_XCVR_TX_DPTH_CTRL_TOG, 0x00000000 }, 1048 { FSL_XCVR_TX_CS_DATA_0, 0x00000000 }, 1049 { FSL_XCVR_TX_CS_DATA_1, 0x00000000 }, 1050 { FSL_XCVR_TX_CS_DATA_2, 0x00000000 }, 1051 { FSL_XCVR_TX_CS_DATA_3, 0x00000000 }, 1052 { FSL_XCVR_TX_CS_DATA_4, 0x00000000 }, 1053 { FSL_XCVR_TX_CS_DATA_5, 0x00000000 }, 1054 { FSL_XCVR_TX_DPTH_CNTR_CTRL, 0x00000000 }, 1055 { FSL_XCVR_TX_DPTH_CNTR_CTRL_SET, 0x00000000 }, 1056 { FSL_XCVR_TX_DPTH_CNTR_CTRL_CLR, 0x00000000 }, 1057 { FSL_XCVR_TX_DPTH_CNTR_CTRL_TOG, 0x00000000 }, 1058 { FSL_XCVR_TX_DPTH_TSCR, 0x00000000 }, 1059 { FSL_XCVR_TX_DPTH_BCR, 0x00000000 }, 1060 { FSL_XCVR_TX_DPTH_BCTR, 0x00000000 }, 1061 { FSL_XCVR_TX_DPTH_BCRR, 0x00000000 }, 1062 { FSL_XCVR_DEBUG_REG_0, 0x00000000 }, 1063 { FSL_XCVR_DEBUG_REG_1, 0x00000000 }, 1064 }; 1065 1066 static bool fsl_xcvr_readable_reg(struct device *dev, unsigned int reg) 1067 { 1068 struct fsl_xcvr *xcvr = dev_get_drvdata(dev); 1069 1070 if (!xcvr->soc_data->use_phy) 1071 if ((reg >= FSL_XCVR_IER && reg <= FSL_XCVR_PHY_AI_RDATA) || 1072 reg > FSL_XCVR_TX_DPTH_BCRR) 1073 return false; 1074 switch (reg) { 1075 case FSL_XCVR_VERSION: 1076 case FSL_XCVR_EXT_CTRL: 1077 case FSL_XCVR_EXT_STATUS: 1078 case FSL_XCVR_EXT_IER0: 1079 case FSL_XCVR_EXT_IER1: 1080 case FSL_XCVR_EXT_ISR: 1081 case FSL_XCVR_EXT_ISR_SET: 1082 case FSL_XCVR_EXT_ISR_CLR: 1083 case FSL_XCVR_EXT_ISR_TOG: 1084 case FSL_XCVR_IER: 1085 case FSL_XCVR_ISR: 1086 case FSL_XCVR_ISR_SET: 1087 case FSL_XCVR_ISR_CLR: 1088 case FSL_XCVR_ISR_TOG: 1089 case FSL_XCVR_PHY_AI_CTRL: 1090 case FSL_XCVR_PHY_AI_CTRL_SET: 1091 case FSL_XCVR_PHY_AI_CTRL_CLR: 1092 case FSL_XCVR_PHY_AI_CTRL_TOG: 1093 case FSL_XCVR_PHY_AI_RDATA: 1094 case FSL_XCVR_CLK_CTRL: 1095 case FSL_XCVR_RX_DPTH_CTRL: 1096 case FSL_XCVR_RX_DPTH_CTRL_SET: 1097 case FSL_XCVR_RX_DPTH_CTRL_CLR: 1098 case FSL_XCVR_RX_DPTH_CTRL_TOG: 1099 case FSL_XCVR_RX_CS_DATA_0: 1100 case FSL_XCVR_RX_CS_DATA_1: 1101 case FSL_XCVR_RX_CS_DATA_2: 1102 case FSL_XCVR_RX_CS_DATA_3: 1103 case FSL_XCVR_RX_CS_DATA_4: 1104 case FSL_XCVR_RX_CS_DATA_5: 1105 case FSL_XCVR_RX_DPTH_CNTR_CTRL: 1106 case FSL_XCVR_RX_DPTH_CNTR_CTRL_SET: 1107 case FSL_XCVR_RX_DPTH_CNTR_CTRL_CLR: 1108 case FSL_XCVR_RX_DPTH_CNTR_CTRL_TOG: 1109 case FSL_XCVR_RX_DPTH_TSCR: 1110 case FSL_XCVR_RX_DPTH_BCR: 1111 case FSL_XCVR_RX_DPTH_BCTR: 1112 case FSL_XCVR_RX_DPTH_BCRR: 1113 case FSL_XCVR_TX_DPTH_CTRL: 1114 case FSL_XCVR_TX_DPTH_CTRL_SET: 1115 case FSL_XCVR_TX_DPTH_CTRL_CLR: 1116 case FSL_XCVR_TX_DPTH_CTRL_TOG: 1117 case FSL_XCVR_TX_CS_DATA_0: 1118 case FSL_XCVR_TX_CS_DATA_1: 1119 case FSL_XCVR_TX_CS_DATA_2: 1120 case FSL_XCVR_TX_CS_DATA_3: 1121 case FSL_XCVR_TX_CS_DATA_4: 1122 case FSL_XCVR_TX_CS_DATA_5: 1123 case FSL_XCVR_TX_DPTH_CNTR_CTRL: 1124 case FSL_XCVR_TX_DPTH_CNTR_CTRL_SET: 1125 case FSL_XCVR_TX_DPTH_CNTR_CTRL_CLR: 1126 case FSL_XCVR_TX_DPTH_CNTR_CTRL_TOG: 1127 case FSL_XCVR_TX_DPTH_TSCR: 1128 case FSL_XCVR_TX_DPTH_BCR: 1129 case FSL_XCVR_TX_DPTH_BCTR: 1130 case FSL_XCVR_TX_DPTH_BCRR: 1131 case FSL_XCVR_DEBUG_REG_0: 1132 case FSL_XCVR_DEBUG_REG_1: 1133 return true; 1134 default: 1135 return false; 1136 } 1137 } 1138 1139 static bool fsl_xcvr_writeable_reg(struct device *dev, unsigned int reg) 1140 { 1141 struct fsl_xcvr *xcvr = dev_get_drvdata(dev); 1142 1143 if (!xcvr->soc_data->use_phy) 1144 if (reg >= FSL_XCVR_IER && reg <= FSL_XCVR_PHY_AI_RDATA) 1145 return false; 1146 switch (reg) { 1147 case FSL_XCVR_EXT_CTRL: 1148 case FSL_XCVR_EXT_IER0: 1149 case FSL_XCVR_EXT_IER1: 1150 case FSL_XCVR_EXT_ISR: 1151 case FSL_XCVR_EXT_ISR_SET: 1152 case FSL_XCVR_EXT_ISR_CLR: 1153 case FSL_XCVR_EXT_ISR_TOG: 1154 case FSL_XCVR_IER: 1155 case FSL_XCVR_ISR_SET: 1156 case FSL_XCVR_ISR_CLR: 1157 case FSL_XCVR_ISR_TOG: 1158 case FSL_XCVR_PHY_AI_CTRL: 1159 case FSL_XCVR_PHY_AI_CTRL_SET: 1160 case FSL_XCVR_PHY_AI_CTRL_CLR: 1161 case FSL_XCVR_PHY_AI_CTRL_TOG: 1162 case FSL_XCVR_PHY_AI_WDATA: 1163 case FSL_XCVR_CLK_CTRL: 1164 case FSL_XCVR_RX_DPTH_CTRL: 1165 case FSL_XCVR_RX_DPTH_CTRL_SET: 1166 case FSL_XCVR_RX_DPTH_CTRL_CLR: 1167 case FSL_XCVR_RX_DPTH_CTRL_TOG: 1168 case FSL_XCVR_RX_DPTH_CNTR_CTRL: 1169 case FSL_XCVR_RX_DPTH_CNTR_CTRL_SET: 1170 case FSL_XCVR_RX_DPTH_CNTR_CTRL_CLR: 1171 case FSL_XCVR_RX_DPTH_CNTR_CTRL_TOG: 1172 case FSL_XCVR_TX_DPTH_CTRL_SET: 1173 case FSL_XCVR_TX_DPTH_CTRL_CLR: 1174 case FSL_XCVR_TX_DPTH_CTRL_TOG: 1175 case FSL_XCVR_TX_CS_DATA_0: 1176 case FSL_XCVR_TX_CS_DATA_1: 1177 case FSL_XCVR_TX_CS_DATA_2: 1178 case FSL_XCVR_TX_CS_DATA_3: 1179 case FSL_XCVR_TX_CS_DATA_4: 1180 case FSL_XCVR_TX_CS_DATA_5: 1181 case FSL_XCVR_TX_DPTH_CNTR_CTRL: 1182 case FSL_XCVR_TX_DPTH_CNTR_CTRL_SET: 1183 case FSL_XCVR_TX_DPTH_CNTR_CTRL_CLR: 1184 case FSL_XCVR_TX_DPTH_CNTR_CTRL_TOG: 1185 return true; 1186 default: 1187 return false; 1188 } 1189 } 1190 1191 static bool fsl_xcvr_volatile_reg(struct device *dev, unsigned int reg) 1192 { 1193 return fsl_xcvr_readable_reg(dev, reg); 1194 } 1195 1196 static const struct regmap_config fsl_xcvr_regmap_cfg = { 1197 .reg_bits = 32, 1198 .reg_stride = 4, 1199 .val_bits = 32, 1200 .max_register = FSL_XCVR_MAX_REG, 1201 .reg_defaults = fsl_xcvr_reg_defaults, 1202 .num_reg_defaults = ARRAY_SIZE(fsl_xcvr_reg_defaults), 1203 .readable_reg = fsl_xcvr_readable_reg, 1204 .volatile_reg = fsl_xcvr_volatile_reg, 1205 .writeable_reg = fsl_xcvr_writeable_reg, 1206 .cache_type = REGCACHE_FLAT, 1207 }; 1208 1209 static void reset_rx_work(struct work_struct *work) 1210 { 1211 struct fsl_xcvr *xcvr = container_of(work, struct fsl_xcvr, work_rst); 1212 struct device *dev = &xcvr->pdev->dev; 1213 unsigned long lock_flags; 1214 u32 ext_ctrl; 1215 1216 dev_dbg(dev, "reset rx path\n"); 1217 spin_lock_irqsave(&xcvr->lock, lock_flags); 1218 regmap_read(xcvr->regmap, FSL_XCVR_EXT_CTRL, &ext_ctrl); 1219 1220 if (!(ext_ctrl & FSL_XCVR_EXT_CTRL_DMA_RD_DIS)) { 1221 regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, 1222 FSL_XCVR_EXT_CTRL_DMA_RD_DIS, 1223 FSL_XCVR_EXT_CTRL_DMA_RD_DIS); 1224 regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, 1225 FSL_XCVR_EXT_CTRL_RX_DPTH_RESET, 1226 FSL_XCVR_EXT_CTRL_RX_DPTH_RESET); 1227 regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, 1228 FSL_XCVR_EXT_CTRL_DMA_RD_DIS, 1229 0); 1230 regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, 1231 FSL_XCVR_EXT_CTRL_RX_DPTH_RESET, 1232 0); 1233 } 1234 spin_unlock_irqrestore(&xcvr->lock, lock_flags); 1235 } 1236 1237 static irqreturn_t irq0_isr(int irq, void *devid) 1238 { 1239 struct fsl_xcvr *xcvr = (struct fsl_xcvr *)devid; 1240 struct device *dev = &xcvr->pdev->dev; 1241 struct regmap *regmap = xcvr->regmap; 1242 void __iomem *reg_ctrl, *reg_buff; 1243 u32 isr, isr_clr = 0, val, i; 1244 1245 regmap_read(regmap, FSL_XCVR_EXT_ISR, &isr); 1246 1247 if (isr & FSL_XCVR_IRQ_NEW_CS) { 1248 dev_dbg(dev, "Received new CS block\n"); 1249 isr_clr |= FSL_XCVR_IRQ_NEW_CS; 1250 if (!xcvr->soc_data->spdif_only) { 1251 /* Data RAM is 4KiB, last two pages: 8 and 9. Select page 8. */ 1252 regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, 1253 FSL_XCVR_EXT_CTRL_PAGE_MASK, 1254 FSL_XCVR_EXT_CTRL_PAGE(8)); 1255 1256 /* Find updated CS buffer */ 1257 reg_ctrl = xcvr->ram_addr + FSL_XCVR_RX_CS_CTRL_0; 1258 reg_buff = xcvr->ram_addr + FSL_XCVR_RX_CS_BUFF_0; 1259 memcpy_fromio(&val, reg_ctrl, sizeof(val)); 1260 if (!val) { 1261 reg_ctrl = xcvr->ram_addr + FSL_XCVR_RX_CS_CTRL_1; 1262 reg_buff = xcvr->ram_addr + FSL_XCVR_RX_CS_BUFF_1; 1263 memcpy_fromio(&val, reg_ctrl, sizeof(val)); 1264 } 1265 1266 if (val) { 1267 /* copy CS buffer */ 1268 memcpy_fromio(&xcvr->rx_iec958.status, reg_buff, 1269 sizeof(xcvr->rx_iec958.status)); 1270 for (i = 0; i < 6; i++) { 1271 val = *(u32 *)(xcvr->rx_iec958.status + i*4); 1272 *(u32 *)(xcvr->rx_iec958.status + i*4) = 1273 bitrev32(val); 1274 } 1275 /* clear CS control register */ 1276 memset_io(reg_ctrl, 0, sizeof(val)); 1277 } 1278 } 1279 } 1280 if (isr & FSL_XCVR_IRQ_NEW_UD) { 1281 dev_dbg(dev, "Received new UD block\n"); 1282 isr_clr |= FSL_XCVR_IRQ_NEW_UD; 1283 } 1284 if (isr & FSL_XCVR_IRQ_MUTE) { 1285 dev_dbg(dev, "HW mute bit detected\n"); 1286 isr_clr |= FSL_XCVR_IRQ_MUTE; 1287 } 1288 if (isr & FSL_XCVR_IRQ_FIFO_UOFL_ERR) { 1289 dev_dbg(dev, "RX/TX FIFO full/empty\n"); 1290 isr_clr |= FSL_XCVR_IRQ_FIFO_UOFL_ERR; 1291 } 1292 if (isr & FSL_XCVR_IRQ_ARC_MODE) { 1293 dev_dbg(dev, "CMDC SM falls out of eARC mode\n"); 1294 isr_clr |= FSL_XCVR_IRQ_ARC_MODE; 1295 } 1296 if (isr & FSL_XCVR_IRQ_DMA_RD_REQ) { 1297 dev_dbg(dev, "DMA read request\n"); 1298 isr_clr |= FSL_XCVR_IRQ_DMA_RD_REQ; 1299 } 1300 if (isr & FSL_XCVR_IRQ_DMA_WR_REQ) { 1301 dev_dbg(dev, "DMA write request\n"); 1302 isr_clr |= FSL_XCVR_IRQ_DMA_WR_REQ; 1303 } 1304 if (isr & FSL_XCVR_IRQ_CMDC_STATUS_UPD) { 1305 dev_dbg(dev, "CMDC status update\n"); 1306 isr_clr |= FSL_XCVR_IRQ_CMDC_STATUS_UPD; 1307 } 1308 if (isr & FSL_XCVR_IRQ_PREAMBLE_MISMATCH) { 1309 dev_dbg(dev, "Preamble mismatch\n"); 1310 isr_clr |= FSL_XCVR_IRQ_PREAMBLE_MISMATCH; 1311 } 1312 if (isr & FSL_XCVR_IRQ_UNEXP_PRE_REC) { 1313 dev_dbg(dev, "Unexpected preamble received\n"); 1314 isr_clr |= FSL_XCVR_IRQ_UNEXP_PRE_REC; 1315 } 1316 if (isr & FSL_XCVR_IRQ_M_W_PRE_MISMATCH) { 1317 dev_dbg(dev, "M/W preamble mismatch\n"); 1318 isr_clr |= FSL_XCVR_IRQ_M_W_PRE_MISMATCH; 1319 } 1320 if (isr & FSL_XCVR_IRQ_B_PRE_MISMATCH) { 1321 dev_dbg(dev, "B preamble mismatch\n"); 1322 isr_clr |= FSL_XCVR_IRQ_B_PRE_MISMATCH; 1323 } 1324 1325 if (isr & (FSL_XCVR_IRQ_PREAMBLE_MISMATCH | 1326 FSL_XCVR_IRQ_UNEXP_PRE_REC | 1327 FSL_XCVR_IRQ_M_W_PRE_MISMATCH | 1328 FSL_XCVR_IRQ_B_PRE_MISMATCH)) { 1329 schedule_work(&xcvr->work_rst); 1330 } 1331 1332 if (isr_clr) { 1333 regmap_write(regmap, FSL_XCVR_EXT_ISR_CLR, isr_clr); 1334 return IRQ_HANDLED; 1335 } 1336 1337 return IRQ_NONE; 1338 } 1339 1340 static const struct fsl_xcvr_soc_data fsl_xcvr_imx8mp_data = { 1341 .fw_name = "imx/xcvr/xcvr-imx8mp.bin", 1342 .use_phy = true, 1343 .pll_ver = PLL_MX8MP, 1344 }; 1345 1346 static const struct fsl_xcvr_soc_data fsl_xcvr_imx93_data = { 1347 .spdif_only = true, 1348 .use_edma = true, 1349 }; 1350 1351 static const struct fsl_xcvr_soc_data fsl_xcvr_imx95_data = { 1352 .spdif_only = true, 1353 .use_phy = true, 1354 .use_edma = true, 1355 .pll_ver = PLL_MX95, 1356 }; 1357 1358 static const struct of_device_id fsl_xcvr_dt_ids[] = { 1359 { .compatible = "fsl,imx8mp-xcvr", .data = &fsl_xcvr_imx8mp_data }, 1360 { .compatible = "fsl,imx93-xcvr", .data = &fsl_xcvr_imx93_data}, 1361 { .compatible = "fsl,imx95-xcvr", .data = &fsl_xcvr_imx95_data}, 1362 { /* sentinel */ } 1363 }; 1364 MODULE_DEVICE_TABLE(of, fsl_xcvr_dt_ids); 1365 1366 static int fsl_xcvr_probe(struct platform_device *pdev) 1367 { 1368 struct device *dev = &pdev->dev; 1369 struct fsl_xcvr *xcvr; 1370 struct resource *rx_res, *tx_res; 1371 void __iomem *regs; 1372 int ret, irq; 1373 1374 xcvr = devm_kzalloc(dev, sizeof(*xcvr), GFP_KERNEL); 1375 if (!xcvr) 1376 return -ENOMEM; 1377 1378 xcvr->pdev = pdev; 1379 xcvr->soc_data = of_device_get_match_data(&pdev->dev); 1380 1381 xcvr->ipg_clk = devm_clk_get(dev, "ipg"); 1382 if (IS_ERR(xcvr->ipg_clk)) { 1383 dev_err(dev, "failed to get ipg clock\n"); 1384 return PTR_ERR(xcvr->ipg_clk); 1385 } 1386 1387 xcvr->phy_clk = devm_clk_get(dev, "phy"); 1388 if (IS_ERR(xcvr->phy_clk)) { 1389 dev_err(dev, "failed to get phy clock\n"); 1390 return PTR_ERR(xcvr->phy_clk); 1391 } 1392 1393 xcvr->spba_clk = devm_clk_get(dev, "spba"); 1394 if (IS_ERR(xcvr->spba_clk)) { 1395 dev_err(dev, "failed to get spba clock\n"); 1396 return PTR_ERR(xcvr->spba_clk); 1397 } 1398 1399 xcvr->pll_ipg_clk = devm_clk_get(dev, "pll_ipg"); 1400 if (IS_ERR(xcvr->pll_ipg_clk)) { 1401 dev_err(dev, "failed to get pll_ipg clock\n"); 1402 return PTR_ERR(xcvr->pll_ipg_clk); 1403 } 1404 1405 fsl_asoc_get_pll_clocks(dev, &xcvr->pll8k_clk, 1406 &xcvr->pll11k_clk); 1407 1408 xcvr->ram_addr = devm_platform_ioremap_resource_byname(pdev, "ram"); 1409 if (IS_ERR(xcvr->ram_addr)) 1410 return PTR_ERR(xcvr->ram_addr); 1411 1412 regs = devm_platform_ioremap_resource_byname(pdev, "regs"); 1413 if (IS_ERR(regs)) 1414 return PTR_ERR(regs); 1415 1416 xcvr->regmap = devm_regmap_init_mmio_clk(dev, NULL, regs, 1417 &fsl_xcvr_regmap_cfg); 1418 if (IS_ERR(xcvr->regmap)) { 1419 dev_err(dev, "failed to init XCVR regmap: %ld\n", 1420 PTR_ERR(xcvr->regmap)); 1421 return PTR_ERR(xcvr->regmap); 1422 } 1423 1424 xcvr->reset = devm_reset_control_get_optional_exclusive(dev, NULL); 1425 if (IS_ERR(xcvr->reset)) { 1426 dev_err(dev, "failed to get XCVR reset control\n"); 1427 return PTR_ERR(xcvr->reset); 1428 } 1429 1430 /* get IRQs */ 1431 irq = platform_get_irq(pdev, 0); 1432 if (irq < 0) 1433 return irq; 1434 1435 ret = devm_request_irq(dev, irq, irq0_isr, 0, pdev->name, xcvr); 1436 if (ret) { 1437 dev_err(dev, "failed to claim IRQ0: %i\n", ret); 1438 return ret; 1439 } 1440 1441 rx_res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "rxfifo"); 1442 tx_res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "txfifo"); 1443 if (!rx_res || !tx_res) { 1444 dev_err(dev, "could not find rxfifo or txfifo resource\n"); 1445 return -EINVAL; 1446 } 1447 xcvr->dma_prms_rx.chan_name = "rx"; 1448 xcvr->dma_prms_tx.chan_name = "tx"; 1449 xcvr->dma_prms_rx.addr = rx_res->start; 1450 xcvr->dma_prms_tx.addr = tx_res->start; 1451 xcvr->dma_prms_rx.maxburst = FSL_XCVR_MAXBURST_RX; 1452 xcvr->dma_prms_tx.maxburst = FSL_XCVR_MAXBURST_TX; 1453 1454 platform_set_drvdata(pdev, xcvr); 1455 pm_runtime_enable(dev); 1456 regcache_cache_only(xcvr->regmap, true); 1457 1458 /* 1459 * Register platform component before registering cpu dai for there 1460 * is not defer probe for platform component in snd_soc_add_pcm_runtime(). 1461 */ 1462 ret = devm_snd_dmaengine_pcm_register(dev, NULL, 0); 1463 if (ret) { 1464 pm_runtime_disable(dev); 1465 dev_err(dev, "failed to pcm register\n"); 1466 return ret; 1467 } 1468 1469 ret = devm_snd_soc_register_component(dev, &fsl_xcvr_comp, 1470 &fsl_xcvr_dai, 1); 1471 if (ret) { 1472 pm_runtime_disable(dev); 1473 dev_err(dev, "failed to register component %s\n", 1474 fsl_xcvr_comp.name); 1475 } 1476 1477 INIT_WORK(&xcvr->work_rst, reset_rx_work); 1478 spin_lock_init(&xcvr->lock); 1479 return ret; 1480 } 1481 1482 static void fsl_xcvr_remove(struct platform_device *pdev) 1483 { 1484 struct fsl_xcvr *xcvr = dev_get_drvdata(&pdev->dev); 1485 1486 cancel_work_sync(&xcvr->work_rst); 1487 pm_runtime_disable(&pdev->dev); 1488 } 1489 1490 static int fsl_xcvr_runtime_suspend(struct device *dev) 1491 { 1492 struct fsl_xcvr *xcvr = dev_get_drvdata(dev); 1493 int ret; 1494 1495 if (!xcvr->soc_data->spdif_only) { 1496 /* Assert M0+ reset */ 1497 ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, 1498 FSL_XCVR_EXT_CTRL_CORE_RESET, 1499 FSL_XCVR_EXT_CTRL_CORE_RESET); 1500 if (ret < 0) 1501 dev_err(dev, "Failed to assert M0+ core: %d\n", ret); 1502 } 1503 1504 regcache_cache_only(xcvr->regmap, true); 1505 1506 clk_disable_unprepare(xcvr->spba_clk); 1507 clk_disable_unprepare(xcvr->phy_clk); 1508 clk_disable_unprepare(xcvr->pll_ipg_clk); 1509 clk_disable_unprepare(xcvr->ipg_clk); 1510 1511 return 0; 1512 } 1513 1514 static int fsl_xcvr_runtime_resume(struct device *dev) 1515 { 1516 struct fsl_xcvr *xcvr = dev_get_drvdata(dev); 1517 int ret; 1518 1519 ret = reset_control_assert(xcvr->reset); 1520 if (ret < 0) { 1521 dev_err(dev, "Failed to assert M0+ reset: %d\n", ret); 1522 return ret; 1523 } 1524 1525 ret = clk_prepare_enable(xcvr->ipg_clk); 1526 if (ret) { 1527 dev_err(dev, "failed to start IPG clock.\n"); 1528 return ret; 1529 } 1530 1531 ret = clk_prepare_enable(xcvr->pll_ipg_clk); 1532 if (ret) { 1533 dev_err(dev, "failed to start PLL IPG clock.\n"); 1534 goto stop_ipg_clk; 1535 } 1536 1537 ret = clk_prepare_enable(xcvr->phy_clk); 1538 if (ret) { 1539 dev_err(dev, "failed to start PHY clock: %d\n", ret); 1540 goto stop_pll_ipg_clk; 1541 } 1542 1543 ret = clk_prepare_enable(xcvr->spba_clk); 1544 if (ret) { 1545 dev_err(dev, "failed to start SPBA clock.\n"); 1546 goto stop_phy_clk; 1547 } 1548 1549 regcache_cache_only(xcvr->regmap, false); 1550 regcache_mark_dirty(xcvr->regmap); 1551 ret = regcache_sync(xcvr->regmap); 1552 1553 if (ret) { 1554 dev_err(dev, "failed to sync regcache.\n"); 1555 goto stop_spba_clk; 1556 } 1557 1558 if (xcvr->soc_data->spdif_only) 1559 return 0; 1560 1561 ret = reset_control_deassert(xcvr->reset); 1562 if (ret) { 1563 dev_err(dev, "failed to deassert M0+ reset.\n"); 1564 goto stop_spba_clk; 1565 } 1566 1567 ret = fsl_xcvr_load_firmware(xcvr); 1568 if (ret) { 1569 dev_err(dev, "failed to load firmware.\n"); 1570 goto stop_spba_clk; 1571 } 1572 1573 /* Release M0+ reset */ 1574 ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_CTRL, 1575 FSL_XCVR_EXT_CTRL_CORE_RESET, 0); 1576 if (ret < 0) { 1577 dev_err(dev, "M0+ core release failed: %d\n", ret); 1578 goto stop_spba_clk; 1579 } 1580 1581 /* Let M0+ core complete firmware initialization */ 1582 msleep(50); 1583 1584 return 0; 1585 1586 stop_spba_clk: 1587 clk_disable_unprepare(xcvr->spba_clk); 1588 stop_phy_clk: 1589 clk_disable_unprepare(xcvr->phy_clk); 1590 stop_pll_ipg_clk: 1591 clk_disable_unprepare(xcvr->pll_ipg_clk); 1592 stop_ipg_clk: 1593 clk_disable_unprepare(xcvr->ipg_clk); 1594 1595 return ret; 1596 } 1597 1598 static const struct dev_pm_ops fsl_xcvr_pm_ops = { 1599 RUNTIME_PM_OPS(fsl_xcvr_runtime_suspend, fsl_xcvr_runtime_resume, NULL) 1600 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, 1601 pm_runtime_force_resume) 1602 }; 1603 1604 static struct platform_driver fsl_xcvr_driver = { 1605 .probe = fsl_xcvr_probe, 1606 .driver = { 1607 .name = "fsl,imx8mp-audio-xcvr", 1608 .pm = pm_ptr(&fsl_xcvr_pm_ops), 1609 .of_match_table = fsl_xcvr_dt_ids, 1610 }, 1611 .remove = fsl_xcvr_remove, 1612 }; 1613 module_platform_driver(fsl_xcvr_driver); 1614 1615 MODULE_AUTHOR("Viorel Suman <viorel.suman@nxp.com>"); 1616 MODULE_DESCRIPTION("NXP Audio Transceiver (XCVR) driver"); 1617 MODULE_LICENSE("GPL v2"); 1618