// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) // Copyright(c) 2023 Intel Corporation /* * Soundwire Intel ops for LunarLake */ #include #include #include #include #include #include #include #include #include #include #include "cadence_master.h" #include "bus.h" #include "intel.h" /* * shim vendor-specific (vs) ops */ static void intel_shim_vs_init(struct sdw_intel *sdw) { void __iomem *shim_vs = sdw->link_res->shim_vs; struct sdw_bus *bus = &sdw->cdns.bus; struct sdw_intel_prop *intel_prop; u16 clde; u16 doaise2; u16 dodse2; u16 clds; u16 clss; u16 doaise; u16 doais; u16 dodse; u16 dods; u16 act; intel_prop = bus->vendor_specific_prop; clde = intel_prop->clde; doaise2 = intel_prop->doaise2; dodse2 = intel_prop->dodse2; clds = intel_prop->clds; clss = intel_prop->clss; doaise = intel_prop->doaise; doais = intel_prop->doais; dodse = intel_prop->dodse; dods = intel_prop->dods; act = intel_readw(shim_vs, SDW_SHIM2_INTEL_VS_ACTMCTL); u16p_replace_bits(&act, clde, SDW_SHIM3_INTEL_VS_ACTMCTL_CLDE); u16p_replace_bits(&act, doaise2, SDW_SHIM3_INTEL_VS_ACTMCTL_DOAISE2); u16p_replace_bits(&act, dodse2, SDW_SHIM3_INTEL_VS_ACTMCTL_DODSE2); u16p_replace_bits(&act, clds, SDW_SHIM3_INTEL_VS_ACTMCTL_CLDS); u16p_replace_bits(&act, clss, SDW_SHIM3_INTEL_VS_ACTMCTL_CLSS); u16p_replace_bits(&act, doaise, SDW_SHIM2_INTEL_VS_ACTMCTL_DOAISE); u16p_replace_bits(&act, doais, SDW_SHIM2_INTEL_VS_ACTMCTL_DOAIS); u16p_replace_bits(&act, dodse, SDW_SHIM2_INTEL_VS_ACTMCTL_DODSE); u16p_replace_bits(&act, dods, SDW_SHIM2_INTEL_VS_ACTMCTL_DODS); act |= SDW_SHIM2_INTEL_VS_ACTMCTL_DACTQE; intel_writew(shim_vs, SDW_SHIM2_INTEL_VS_ACTMCTL, act); usleep_range(10, 15); } static void intel_shim_vs_set_clock_source(struct sdw_intel *sdw, u32 source) { void __iomem *shim_vs = sdw->link_res->shim_vs; u32 val; val = intel_readl(shim_vs, SDW_SHIM2_INTEL_VS_LVSCTL); u32p_replace_bits(&val, source, SDW_SHIM2_INTEL_VS_LVSCTL_MLCS); intel_writel(shim_vs, SDW_SHIM2_INTEL_VS_LVSCTL, val); dev_dbg(sdw->cdns.dev, "clock source %d LVSCTL %#x\n", source, val); } static int intel_shim_check_wake(struct sdw_intel *sdw) { /* * We follow the HDaudio example and resume unconditionally * without checking the WAKESTS bit for that specific link */ return 1; } static void intel_shim_wake(struct sdw_intel *sdw, bool wake_enable) { u16 lsdiid = 0; u16 wake_en; u16 wake_sts; int ret; mutex_lock(sdw->link_res->shim_lock); ret = hdac_bus_eml_sdw_get_lsdiid_unlocked(sdw->link_res->hbus, sdw->instance, &lsdiid); if (ret < 0) goto unlock; wake_en = snd_hdac_chip_readw(sdw->link_res->hbus, WAKEEN); if (wake_enable) { /* Enable the wakeup */ wake_en |= lsdiid; snd_hdac_chip_writew(sdw->link_res->hbus, WAKEEN, wake_en); } else { /* Disable the wake up interrupt */ wake_en &= ~lsdiid; snd_hdac_chip_writew(sdw->link_res->hbus, WAKEEN, wake_en); /* Clear wake status (W1C) */ wake_sts = snd_hdac_chip_readw(sdw->link_res->hbus, STATESTS); wake_sts |= lsdiid; snd_hdac_chip_writew(sdw->link_res->hbus, STATESTS, wake_sts); } unlock: mutex_unlock(sdw->link_res->shim_lock); } static int intel_link_power_up(struct sdw_intel *sdw) { struct sdw_bus *bus = &sdw->cdns.bus; struct sdw_master_prop *prop = &bus->prop; u32 *shim_mask = sdw->link_res->shim_mask; unsigned int link_id = sdw->instance; u32 clock_source; u32 syncprd; int ret; if (prop->mclk_freq % 6000000) { if (prop->mclk_freq % 2400000) { syncprd = SDW_SHIM_SYNC_SYNCPRD_VAL_24_576; clock_source = SDW_SHIM2_MLCS_CARDINAL_CLK; } else { syncprd = SDW_SHIM_SYNC_SYNCPRD_VAL_38_4; clock_source = SDW_SHIM2_MLCS_XTAL_CLK; } } else { syncprd = SDW_SHIM_SYNC_SYNCPRD_VAL_96; clock_source = SDW_SHIM2_MLCS_AUDIO_PLL_CLK; } mutex_lock(sdw->link_res->shim_lock); ret = hdac_bus_eml_sdw_power_up_unlocked(sdw->link_res->hbus, link_id); if (ret < 0) { dev_err(sdw->cdns.dev, "%s: hdac_bus_eml_sdw_power_up failed: %d\n", __func__, ret); goto out; } intel_shim_vs_set_clock_source(sdw, clock_source); if (!*shim_mask) { /* we first need to program the SyncPRD/CPU registers */ dev_dbg(sdw->cdns.dev, "first link up, programming SYNCPRD\n"); ret = hdac_bus_eml_sdw_set_syncprd_unlocked(sdw->link_res->hbus, syncprd); if (ret < 0) { dev_err(sdw->cdns.dev, "%s: hdac_bus_eml_sdw_set_syncprd failed: %d\n", __func__, ret); goto out; } /* SYNCPU will change once link is active */ ret = hdac_bus_eml_sdw_wait_syncpu_unlocked(sdw->link_res->hbus); if (ret < 0) { dev_err(sdw->cdns.dev, "%s: hdac_bus_eml_sdw_wait_syncpu failed: %d\n", __func__, ret); goto out; } hdac_bus_eml_enable_interrupt_unlocked(sdw->link_res->hbus, true, AZX_REG_ML_LEPTR_ID_SDW, true); } *shim_mask |= BIT(link_id); sdw->cdns.link_up = true; intel_shim_vs_init(sdw); out: mutex_unlock(sdw->link_res->shim_lock); return ret; } static int intel_link_power_down(struct sdw_intel *sdw) { u32 *shim_mask = sdw->link_res->shim_mask; unsigned int link_id = sdw->instance; int ret; mutex_lock(sdw->link_res->shim_lock); sdw->cdns.link_up = false; *shim_mask &= ~BIT(link_id); if (!*shim_mask) hdac_bus_eml_enable_interrupt_unlocked(sdw->link_res->hbus, true, AZX_REG_ML_LEPTR_ID_SDW, false); ret = hdac_bus_eml_sdw_power_down_unlocked(sdw->link_res->hbus, link_id); if (ret < 0) { dev_err(sdw->cdns.dev, "%s: hdac_bus_eml_sdw_power_down failed: %d\n", __func__, ret); /* * we leave the sdw->cdns.link_up flag as false since we've disabled * the link at this point and cannot handle interrupts any longer. */ } mutex_unlock(sdw->link_res->shim_lock); return ret; } static void intel_sync_arm(struct sdw_intel *sdw) { unsigned int link_id = sdw->instance; mutex_lock(sdw->link_res->shim_lock); hdac_bus_eml_sdw_sync_arm_unlocked(sdw->link_res->hbus, link_id); mutex_unlock(sdw->link_res->shim_lock); } static int intel_sync_go_unlocked(struct sdw_intel *sdw) { int ret; ret = hdac_bus_eml_sdw_sync_go_unlocked(sdw->link_res->hbus); if (ret < 0) dev_err(sdw->cdns.dev, "%s: SyncGO clear failed: %d\n", __func__, ret); return ret; } static int intel_sync_go(struct sdw_intel *sdw) { int ret; mutex_lock(sdw->link_res->shim_lock); ret = intel_sync_go_unlocked(sdw); mutex_unlock(sdw->link_res->shim_lock); return ret; } static bool intel_check_cmdsync_unlocked(struct sdw_intel *sdw) { return hdac_bus_eml_sdw_check_cmdsync_unlocked(sdw->link_res->hbus); } /* DAI callbacks */ static int intel_params_stream(struct sdw_intel *sdw, struct snd_pcm_substream *substream, struct snd_soc_dai *dai, struct snd_pcm_hw_params *hw_params, int link_id, int alh_stream_id) { struct sdw_intel_link_res *res = sdw->link_res; struct sdw_intel_stream_params_data params_data; params_data.substream = substream; params_data.dai = dai; params_data.hw_params = hw_params; params_data.link_id = link_id; params_data.alh_stream_id = alh_stream_id; if (res->ops && res->ops->params_stream && res->dev) return res->ops->params_stream(res->dev, ¶ms_data); return -EIO; } static int intel_free_stream(struct sdw_intel *sdw, struct snd_pcm_substream *substream, struct snd_soc_dai *dai, int link_id) { struct sdw_intel_link_res *res = sdw->link_res; struct sdw_intel_stream_free_data free_data; free_data.substream = substream; free_data.dai = dai; free_data.link_id = link_id; if (res->ops && res->ops->free_stream && res->dev) return res->ops->free_stream(res->dev, &free_data); return 0; } /* * DAI operations */ static int intel_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { struct sdw_cdns *cdns = snd_soc_dai_get_drvdata(dai); struct sdw_intel *sdw = cdns_to_intel(cdns); struct sdw_cdns_dai_runtime *dai_runtime; struct sdw_cdns_pdi *pdi; struct sdw_stream_config sconfig; int ch, dir; int ret; dai_runtime = cdns->dai_runtime_array[dai->id]; if (!dai_runtime) return -EIO; ch = params_channels(params); if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) dir = SDW_DATA_DIR_RX; else dir = SDW_DATA_DIR_TX; pdi = sdw_cdns_alloc_pdi(cdns, &cdns->pcm, ch, dir, dai->id); if (!pdi) return -EINVAL; /* use same definitions for alh_id as previous generations */ pdi->intel_alh_id = (sdw->instance * 16) + pdi->num + 3; if (pdi->num >= 2) pdi->intel_alh_id += 2; /* the SHIM will be configured in the callback functions */ sdw_cdns_config_stream(cdns, ch, dir, pdi); /* store pdi and state, may be needed in prepare step */ dai_runtime->paused = false; dai_runtime->suspended = false; dai_runtime->pdi = pdi; /* Inform DSP about PDI stream number */ ret = intel_params_stream(sdw, substream, dai, params, sdw->instance, pdi->intel_alh_id); if (ret) return ret; sconfig.direction = dir; sconfig.ch_count = ch; sconfig.frame_rate = params_rate(params); sconfig.type = dai_runtime->stream_type; sconfig.bps = snd_pcm_format_width(params_format(params)); /* Port configuration */ struct sdw_port_config *pconfig __free(kfree) = kzalloc(sizeof(*pconfig), GFP_KERNEL); if (!pconfig) return -ENOMEM; pconfig->num = pdi->num; pconfig->ch_mask = (1 << ch) - 1; ret = sdw_stream_add_master(&cdns->bus, &sconfig, pconfig, 1, dai_runtime->stream); if (ret) dev_err(cdns->dev, "add master to stream failed:%d\n", ret); return ret; } static int intel_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); struct sdw_cdns *cdns = snd_soc_dai_get_drvdata(dai); struct sdw_intel *sdw = cdns_to_intel(cdns); struct sdw_cdns_dai_runtime *dai_runtime; struct snd_pcm_hw_params *hw_params; int ch, dir; dai_runtime = cdns->dai_runtime_array[dai->id]; if (!dai_runtime) { dev_err(dai->dev, "failed to get dai runtime in %s\n", __func__); return -EIO; } hw_params = &rtd->dpcm[substream->stream].hw_params; if (dai_runtime->suspended) { dai_runtime->suspended = false; /* * .prepare() is called after system resume, where we * need to reinitialize the SHIM/ALH/Cadence IP. * .prepare() is also called to deal with underflows, * but in those cases we cannot touch ALH/SHIM * registers */ /* configure stream */ ch = params_channels(hw_params); if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) dir = SDW_DATA_DIR_RX; else dir = SDW_DATA_DIR_TX; /* the SHIM will be configured in the callback functions */ sdw_cdns_config_stream(cdns, ch, dir, dai_runtime->pdi); } /* Inform DSP about PDI stream number */ return intel_params_stream(sdw, substream, dai, hw_params, sdw->instance, dai_runtime->pdi->intel_alh_id); } static int intel_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct sdw_cdns *cdns = snd_soc_dai_get_drvdata(dai); struct sdw_intel *sdw = cdns_to_intel(cdns); struct sdw_cdns_dai_runtime *dai_runtime; int ret; dai_runtime = cdns->dai_runtime_array[dai->id]; if (!dai_runtime) return -EIO; /* * The sdw stream state will transition to RELEASED when stream-> * master_list is empty. So the stream state will transition to * DEPREPARED for the first cpu-dai and to RELEASED for the last * cpu-dai. */ ret = sdw_stream_remove_master(&cdns->bus, dai_runtime->stream); if (ret < 0) { dev_err(dai->dev, "remove master from stream %s failed: %d\n", dai_runtime->stream->name, ret); return ret; } ret = intel_free_stream(sdw, substream, dai, sdw->instance); if (ret < 0) { dev_err(dai->dev, "intel_free_stream: failed %d\n", ret); return ret; } dai_runtime->pdi = NULL; return 0; } static int intel_pcm_set_sdw_stream(struct snd_soc_dai *dai, void *stream, int direction) { return cdns_set_sdw_stream(dai, stream, direction); } static void *intel_get_sdw_stream(struct snd_soc_dai *dai, int direction) { struct sdw_cdns *cdns = snd_soc_dai_get_drvdata(dai); struct sdw_cdns_dai_runtime *dai_runtime; dai_runtime = cdns->dai_runtime_array[dai->id]; if (!dai_runtime) return ERR_PTR(-EINVAL); return dai_runtime->stream; } static int intel_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { struct sdw_cdns *cdns = snd_soc_dai_get_drvdata(dai); struct sdw_intel *sdw = cdns_to_intel(cdns); struct sdw_intel_link_res *res = sdw->link_res; struct sdw_cdns_dai_runtime *dai_runtime; int ret = 0; /* * The .trigger callback is used to program HDaudio DMA and send required IPC to audio * firmware. */ if (res->ops && res->ops->trigger) { ret = res->ops->trigger(substream, cmd, dai); if (ret < 0) return ret; } dai_runtime = cdns->dai_runtime_array[dai->id]; if (!dai_runtime) { dev_err(dai->dev, "failed to get dai runtime in %s\n", __func__); return -EIO; } switch (cmd) { case SNDRV_PCM_TRIGGER_SUSPEND: /* * The .prepare callback is used to deal with xruns and resume operations. * In the case of xruns, the DMAs and SHIM registers cannot be touched, * but for resume operations the DMAs and SHIM registers need to be initialized. * the .trigger callback is used to track the suspend case only. */ dai_runtime->suspended = true; break; case SNDRV_PCM_TRIGGER_PAUSE_PUSH: dai_runtime->paused = true; break; case SNDRV_PCM_TRIGGER_STOP: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: dai_runtime->paused = false; break; default: break; } return ret; } static const struct snd_soc_dai_ops intel_pcm_dai_ops = { .hw_params = intel_hw_params, .prepare = intel_prepare, .hw_free = intel_hw_free, .trigger = intel_trigger, .set_stream = intel_pcm_set_sdw_stream, .get_stream = intel_get_sdw_stream, }; static const struct snd_soc_component_driver dai_component = { .name = "soundwire", }; /* * PDI routines */ static void intel_pdi_init(struct sdw_intel *sdw, struct sdw_cdns_stream_config *config) { void __iomem *shim = sdw->link_res->shim; int pcm_cap; /* PCM Stream Capability */ pcm_cap = intel_readw(shim, SDW_SHIM2_PCMSCAP); config->pcm_bd = FIELD_GET(SDW_SHIM2_PCMSCAP_BSS, pcm_cap); config->pcm_in = FIELD_GET(SDW_SHIM2_PCMSCAP_ISS, pcm_cap); config->pcm_out = FIELD_GET(SDW_SHIM2_PCMSCAP_ISS, pcm_cap); dev_dbg(sdw->cdns.dev, "PCM cap bd:%d in:%d out:%d\n", config->pcm_bd, config->pcm_in, config->pcm_out); } static int intel_pdi_get_ch_cap(struct sdw_intel *sdw, unsigned int pdi_num) { void __iomem *shim = sdw->link_res->shim; /* zero based values for channel count in register */ return intel_readw(shim, SDW_SHIM2_PCMSYCHC(pdi_num)) + 1; } static void intel_pdi_get_ch_update(struct sdw_intel *sdw, struct sdw_cdns_pdi *pdi, unsigned int num_pdi, unsigned int *num_ch) { int ch_count = 0; int i; for (i = 0; i < num_pdi; i++) { pdi->ch_count = intel_pdi_get_ch_cap(sdw, pdi->num); ch_count += pdi->ch_count; pdi++; } *num_ch = ch_count; } static void intel_pdi_stream_ch_update(struct sdw_intel *sdw, struct sdw_cdns_streams *stream) { intel_pdi_get_ch_update(sdw, stream->bd, stream->num_bd, &stream->num_ch_bd); intel_pdi_get_ch_update(sdw, stream->in, stream->num_in, &stream->num_ch_in); intel_pdi_get_ch_update(sdw, stream->out, stream->num_out, &stream->num_ch_out); } static int intel_create_dai(struct sdw_cdns *cdns, struct snd_soc_dai_driver *dais, enum intel_pdi_type type, u32 num, u32 off, u32 max_ch) { int i; if (!num) return 0; for (i = off; i < (off + num); i++) { dais[i].name = devm_kasprintf(cdns->dev, GFP_KERNEL, "SDW%d Pin%d", cdns->instance, i); if (!dais[i].name) return -ENOMEM; if (type == INTEL_PDI_BD || type == INTEL_PDI_OUT) { dais[i].playback.channels_min = 1; dais[i].playback.channels_max = max_ch; } if (type == INTEL_PDI_BD || type == INTEL_PDI_IN) { dais[i].capture.channels_min = 1; dais[i].capture.channels_max = max_ch; } dais[i].ops = &intel_pcm_dai_ops; } return 0; } static int intel_register_dai(struct sdw_intel *sdw) { struct sdw_cdns_dai_runtime **dai_runtime_array; struct sdw_cdns_stream_config config; struct sdw_cdns *cdns = &sdw->cdns; struct sdw_cdns_streams *stream; struct snd_soc_dai_driver *dais; int num_dai; int ret; int off = 0; /* Read the PDI config and initialize cadence PDI */ intel_pdi_init(sdw, &config); ret = sdw_cdns_pdi_init(cdns, config); if (ret) return ret; intel_pdi_stream_ch_update(sdw, &sdw->cdns.pcm); /* DAIs are created based on total number of PDIs supported */ num_dai = cdns->pcm.num_pdi; dai_runtime_array = devm_kcalloc(cdns->dev, num_dai, sizeof(struct sdw_cdns_dai_runtime *), GFP_KERNEL); if (!dai_runtime_array) return -ENOMEM; cdns->dai_runtime_array = dai_runtime_array; dais = devm_kcalloc(cdns->dev, num_dai, sizeof(*dais), GFP_KERNEL); if (!dais) return -ENOMEM; /* Create PCM DAIs */ stream = &cdns->pcm; ret = intel_create_dai(cdns, dais, INTEL_PDI_IN, cdns->pcm.num_in, off, stream->num_ch_in); if (ret) return ret; off += cdns->pcm.num_in; ret = intel_create_dai(cdns, dais, INTEL_PDI_OUT, cdns->pcm.num_out, off, stream->num_ch_out); if (ret) return ret; off += cdns->pcm.num_out; ret = intel_create_dai(cdns, dais, INTEL_PDI_BD, cdns->pcm.num_bd, off, stream->num_ch_bd); if (ret) return ret; return devm_snd_soc_register_component(cdns->dev, &dai_component, dais, num_dai); } static void intel_program_sdi(struct sdw_intel *sdw, int dev_num) { int ret; ret = hdac_bus_eml_sdw_set_lsdiid(sdw->link_res->hbus, sdw->instance, dev_num); if (ret < 0) dev_err(sdw->cdns.dev, "%s: could not set lsdiid for link %d %d\n", __func__, sdw->instance, dev_num); } static int intel_get_link_count(struct sdw_intel *sdw) { int ret; ret = hdac_bus_eml_get_count(sdw->link_res->hbus, true, AZX_REG_ML_LEPTR_ID_SDW); if (!ret) { dev_err(sdw->cdns.dev, "%s: could not retrieve link count\n", __func__); return -ENODEV; } if (ret > SDW_INTEL_MAX_LINKS) { dev_err(sdw->cdns.dev, "%s: link count %d exceed max %d\n", __func__, ret, SDW_INTEL_MAX_LINKS); return -EINVAL; } return ret; } const struct sdw_intel_hw_ops sdw_intel_lnl_hw_ops = { .debugfs_init = intel_ace2x_debugfs_init, .debugfs_exit = intel_ace2x_debugfs_exit, .get_link_count = intel_get_link_count, .register_dai = intel_register_dai, .check_clock_stop = intel_check_clock_stop, .start_bus = intel_start_bus, .start_bus_after_reset = intel_start_bus_after_reset, .start_bus_after_clock_stop = intel_start_bus_after_clock_stop, .stop_bus = intel_stop_bus, .link_power_up = intel_link_power_up, .link_power_down = intel_link_power_down, .shim_check_wake = intel_shim_check_wake, .shim_wake = intel_shim_wake, .pre_bank_switch = intel_pre_bank_switch, .post_bank_switch = intel_post_bank_switch, .sync_arm = intel_sync_arm, .sync_go_unlocked = intel_sync_go_unlocked, .sync_go = intel_sync_go, .sync_check_cmdsync_unlocked = intel_check_cmdsync_unlocked, .program_sdi = intel_program_sdi, }; EXPORT_SYMBOL_NS(sdw_intel_lnl_hw_ops, "SOUNDWIRE_INTEL"); MODULE_IMPORT_NS("SND_SOC_SOF_HDA_MLINK");