/* * hdac_hdmi.c - ASoc HDA-HDMI codec driver for Intel platforms * * Copyright (C) 2014-2015 Intel Corp * Author: Samreen Nilofer * Subhransu S. Prusty * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include #include #include #include #include #include #include #include #include #include #include #include "../../hda/local.h" #define AMP_OUT_MUTE 0xb080 #define AMP_OUT_UNMUTE 0xb000 #define PIN_OUT (AC_PINCTL_OUT_EN) #define HDA_MAX_CONNECTIONS 32 #define ELD_MAX_SIZE 256 #define ELD_FIXED_BYTES 20 struct hdac_hdmi_cvt_params { unsigned int channels_min; unsigned int channels_max; u32 rates; u64 formats; unsigned int maxbps; }; struct hdac_hdmi_cvt { struct list_head head; hda_nid_t nid; struct hdac_hdmi_cvt_params params; }; struct hdac_hdmi_eld { bool monitor_present; bool eld_valid; int eld_size; char eld_buffer[ELD_MAX_SIZE]; }; struct hdac_hdmi_pin { struct list_head head; hda_nid_t nid; int num_mux_nids; hda_nid_t mux_nids[HDA_MAX_CONNECTIONS]; struct hdac_hdmi_eld eld; struct hdac_ext_device *edev; int repoll_count; struct delayed_work work; }; struct hdac_hdmi_dai_pin_map { int dai_id; struct hdac_hdmi_pin *pin; struct hdac_hdmi_cvt *cvt; }; struct hdac_hdmi_priv { struct hdac_hdmi_dai_pin_map dai_map[3]; struct list_head pin_list; struct list_head cvt_list; int num_pin; int num_cvt; }; static inline struct hdac_ext_device *to_hda_ext_device(struct device *dev) { struct hdac_device *hdac = dev_to_hdac_dev(dev); return to_ehdac_device(hdac); } static unsigned int sad_format(const u8 *sad) { return ((sad[0] >> 0x3) & 0x1f); } static unsigned int sad_sample_bits_lpcm(const u8 *sad) { return (sad[2] & 7); } static int hdac_hdmi_eld_limit_formats(struct snd_pcm_runtime *runtime, void *eld) { u64 formats = SNDRV_PCM_FMTBIT_S16; int i; const u8 *sad, *eld_buf = eld; sad = drm_eld_sad(eld_buf); if (!sad) goto format_constraint; for (i = drm_eld_sad_count(eld_buf); i > 0; i--, sad += 3) { if (sad_format(sad) == 1) { /* AUDIO_CODING_TYPE_LPCM */ /* * the controller support 20 and 24 bits in 32 bit * container so we set S32 */ if (sad_sample_bits_lpcm(sad) & 0x6) formats |= SNDRV_PCM_FMTBIT_S32; } } format_constraint: return snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT, formats); } /* HDMI ELD routines */ static unsigned int hdac_hdmi_get_eld_data(struct hdac_device *codec, hda_nid_t nid, int byte_index) { unsigned int val; val = snd_hdac_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_ELDD, byte_index); dev_dbg(&codec->dev, "HDMI: ELD data byte %d: 0x%x\n", byte_index, val); return val; } static int hdac_hdmi_get_eld_size(struct hdac_device *codec, hda_nid_t nid) { return snd_hdac_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_DIP_SIZE, AC_DIPSIZE_ELD_BUF); } /* * This function queries the ELD size and ELD data and fills in the buffer * passed by user */ static int hdac_hdmi_get_eld(struct hdac_device *codec, hda_nid_t nid, unsigned char *buf, int *eld_size) { int i, size, ret = 0; /* * ELD size is initialized to zero in caller function. If no errors and * ELD is valid, actual eld_size is assigned. */ size = hdac_hdmi_get_eld_size(codec, nid); if (size < ELD_FIXED_BYTES || size > ELD_MAX_SIZE) { dev_err(&codec->dev, "HDMI: invalid ELD buf size %d\n", size); return -ERANGE; } /* set ELD buffer */ for (i = 0; i < size; i++) { unsigned int val = hdac_hdmi_get_eld_data(codec, nid, i); /* * Graphics driver might be writing to ELD buffer right now. * Just abort. The caller will repoll after a while. */ if (!(val & AC_ELDD_ELD_VALID)) { dev_err(&codec->dev, "HDMI: invalid ELD data byte %d\n", i); ret = -EINVAL; goto error; } val &= AC_ELDD_ELD_DATA; /* * The first byte cannot be zero. This can happen on some DVI * connections. Some Intel chips may also need some 250ms delay * to return non-zero ELD data, even when the graphics driver * correctly writes ELD content before setting ELD_valid bit. */ if (!val && !i) { dev_err(&codec->dev, "HDMI: 0 ELD data\n"); ret = -EINVAL; goto error; } buf[i] = val; } *eld_size = size; error: return ret; } static int hdac_hdmi_setup_stream(struct hdac_ext_device *hdac, hda_nid_t cvt_nid, hda_nid_t pin_nid, u32 stream_tag, int format) { unsigned int val; dev_dbg(&hdac->hdac.dev, "cvt nid %d pnid %d stream %d format 0x%x\n", cvt_nid, pin_nid, stream_tag, format); val = (stream_tag << 4); snd_hdac_codec_write(&hdac->hdac, cvt_nid, 0, AC_VERB_SET_CHANNEL_STREAMID, val); snd_hdac_codec_write(&hdac->hdac, cvt_nid, 0, AC_VERB_SET_STREAM_FORMAT, format); return 0; } static void hdac_hdmi_set_dip_index(struct hdac_ext_device *hdac, hda_nid_t pin_nid, int packet_index, int byte_index) { int val; val = (packet_index << 5) | (byte_index & 0x1f); snd_hdac_codec_write(&hdac->hdac, pin_nid, 0, AC_VERB_SET_HDMI_DIP_INDEX, val); } static int hdac_hdmi_setup_audio_infoframe(struct hdac_ext_device *hdac, hda_nid_t cvt_nid, hda_nid_t pin_nid) { uint8_t buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE]; struct hdmi_audio_infoframe frame; u8 *dip = (u8 *)&frame; int ret; int i; hdmi_audio_infoframe_init(&frame); /* Default stereo for now */ frame.channels = 2; /* setup channel count */ snd_hdac_codec_write(&hdac->hdac, cvt_nid, 0, AC_VERB_SET_CVT_CHAN_COUNT, frame.channels - 1); ret = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer)); if (ret < 0) return ret; /* stop infoframe transmission */ hdac_hdmi_set_dip_index(hdac, pin_nid, 0x0, 0x0); snd_hdac_codec_write(&hdac->hdac, pin_nid, 0, AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_DISABLE); /* Fill infoframe. Index auto-incremented */ hdac_hdmi_set_dip_index(hdac, pin_nid, 0x0, 0x0); for (i = 0; i < sizeof(frame); i++) snd_hdac_codec_write(&hdac->hdac, pin_nid, 0, AC_VERB_SET_HDMI_DIP_DATA, dip[i]); /* Start infoframe */ hdac_hdmi_set_dip_index(hdac, pin_nid, 0x0, 0x0); snd_hdac_codec_write(&hdac->hdac, pin_nid, 0, AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_BEST); return 0; } static void hdac_hdmi_set_power_state(struct hdac_ext_device *edev, struct hdac_hdmi_dai_pin_map *dai_map, unsigned int pwr_state) { /* Power up pin widget */ if (!snd_hdac_check_power_state(&edev->hdac, dai_map->pin->nid, pwr_state)) snd_hdac_codec_write(&edev->hdac, dai_map->pin->nid, 0, AC_VERB_SET_POWER_STATE, pwr_state); /* Power up converter */ if (!snd_hdac_check_power_state(&edev->hdac, dai_map->cvt->nid, pwr_state)) snd_hdac_codec_write(&edev->hdac, dai_map->cvt->nid, 0, AC_VERB_SET_POWER_STATE, pwr_state); } static int hdac_hdmi_playback_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai); struct hdac_hdmi_priv *hdmi = hdac->private_data; struct hdac_hdmi_dai_pin_map *dai_map; struct hdac_ext_dma_params *dd; int ret; if (dai->id > 0) { dev_err(&hdac->hdac.dev, "Only one dai supported as of now\n"); return -ENODEV; } dai_map = &hdmi->dai_map[dai->id]; dd = (struct hdac_ext_dma_params *)snd_soc_dai_get_dma_data(dai, substream); dev_dbg(&hdac->hdac.dev, "stream tag from cpu dai %d format in cvt 0x%x\n", dd->stream_tag, dd->format); ret = hdac_hdmi_setup_audio_infoframe(hdac, dai_map->cvt->nid, dai_map->pin->nid); if (ret < 0) return ret; return hdac_hdmi_setup_stream(hdac, dai_map->cvt->nid, dai_map->pin->nid, dd->stream_tag, dd->format); } static int hdac_hdmi_set_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *hparams, struct snd_soc_dai *dai) { struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai); struct hdac_ext_dma_params *dd; if (dai->id > 0) { dev_err(&hdac->hdac.dev, "Only one dai supported as of now\n"); return -ENODEV; } dd = kzalloc(sizeof(*dd), GFP_KERNEL); if (!dd) return -ENOMEM; dd->format = snd_hdac_calc_stream_format(params_rate(hparams), params_channels(hparams), params_format(hparams), 24, 0); snd_soc_dai_set_dma_data(dai, substream, (void *)dd); return 0; } static int hdac_hdmi_playback_cleanup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct hdac_ext_device *edev = snd_soc_dai_get_drvdata(dai); struct hdac_ext_dma_params *dd; struct hdac_hdmi_priv *hdmi = edev->private_data; struct hdac_hdmi_dai_pin_map *dai_map; dai_map = &hdmi->dai_map[dai->id]; snd_hdac_codec_write(&edev->hdac, dai_map->cvt->nid, 0, AC_VERB_SET_CHANNEL_STREAMID, 0); snd_hdac_codec_write(&edev->hdac, dai_map->cvt->nid, 0, AC_VERB_SET_STREAM_FORMAT, 0); dd = (struct hdac_ext_dma_params *)snd_soc_dai_get_dma_data(dai, substream); snd_soc_dai_set_dma_data(dai, substream, NULL); kfree(dd); return 0; } static int hdac_hdmi_pcm_open(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai); struct hdac_hdmi_priv *hdmi = hdac->private_data; struct hdac_hdmi_dai_pin_map *dai_map; int ret; if (dai->id > 0) { dev_err(&hdac->hdac.dev, "Only one dai supported as of now\n"); return -ENODEV; } dai_map = &hdmi->dai_map[dai->id]; if ((!dai_map->pin->eld.monitor_present) || (!dai_map->pin->eld.eld_valid)) { dev_err(&hdac->hdac.dev, "Failed: montior present? %d ELD valid?: %d\n", dai_map->pin->eld.monitor_present, dai_map->pin->eld.eld_valid); return -ENODEV; } hdac_hdmi_set_power_state(hdac, dai_map, AC_PWRST_D0); snd_hdac_codec_write(&hdac->hdac, dai_map->pin->nid, 0, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE); ret = hdac_hdmi_eld_limit_formats(substream->runtime, dai_map->pin->eld.eld_buffer); if (ret < 0) return ret; return snd_pcm_hw_constraint_eld(substream->runtime, dai_map->pin->eld.eld_buffer); } static void hdac_hdmi_pcm_close(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai); struct hdac_hdmi_priv *hdmi = hdac->private_data; struct hdac_hdmi_dai_pin_map *dai_map; dai_map = &hdmi->dai_map[dai->id]; hdac_hdmi_set_power_state(hdac, dai_map, AC_PWRST_D3); snd_hdac_codec_write(&hdac->hdac, dai_map->pin->nid, 0, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE); } static int hdac_hdmi_query_cvt_params(struct hdac_device *hdac, struct hdac_hdmi_cvt *cvt) { int err; /* Only stereo supported as of now */ cvt->params.channels_min = cvt->params.channels_max = 2; err = snd_hdac_query_supported_pcm(hdac, cvt->nid, &cvt->params.rates, &cvt->params.formats, &cvt->params.maxbps); if (err < 0) dev_err(&hdac->dev, "Failed to query pcm params for nid %d: %d\n", cvt->nid, err); return err; } static void hdac_hdmi_fill_widget_info(struct snd_soc_dapm_widget *w, enum snd_soc_dapm_type id, const char *wname, const char *stream) { w->id = id; w->name = wname; w->sname = stream; w->reg = SND_SOC_NOPM; w->shift = 0; w->kcontrol_news = NULL; w->num_kcontrols = 0; w->priv = NULL; } static void hdac_hdmi_fill_route(struct snd_soc_dapm_route *route, const char *sink, const char *control, const char *src) { route->sink = sink; route->source = src; route->control = control; route->connected = NULL; } static void create_fill_widget_route_map(struct snd_soc_dapm_context *dapm, struct hdac_hdmi_dai_pin_map *dai_map) { struct snd_soc_dapm_route route[1]; struct snd_soc_dapm_widget widgets[2] = { {0} }; memset(&route, 0, sizeof(route)); hdac_hdmi_fill_widget_info(&widgets[0], snd_soc_dapm_output, "hif1 Output", NULL); hdac_hdmi_fill_widget_info(&widgets[1], snd_soc_dapm_aif_in, "Coverter 1", "hif1"); hdac_hdmi_fill_route(&route[0], "hif1 Output", NULL, "Coverter 1"); snd_soc_dapm_new_controls(dapm, widgets, ARRAY_SIZE(widgets)); snd_soc_dapm_add_routes(dapm, route, ARRAY_SIZE(route)); } static int hdac_hdmi_init_dai_map(struct hdac_ext_device *edev) { struct hdac_hdmi_priv *hdmi = edev->private_data; struct hdac_hdmi_dai_pin_map *dai_map = &hdmi->dai_map[0]; struct hdac_hdmi_cvt *cvt; struct hdac_hdmi_pin *pin; if (list_empty(&hdmi->cvt_list) || list_empty(&hdmi->pin_list)) return -EINVAL; /* * Currently on board only 1 pin and 1 converter is enabled for * simplification, more will be added eventually * So using fixed map for dai_id:pin:cvt */ cvt = list_first_entry(&hdmi->cvt_list, struct hdac_hdmi_cvt, head); pin = list_first_entry(&hdmi->pin_list, struct hdac_hdmi_pin, head); dai_map->dai_id = 0; dai_map->pin = pin; dai_map->cvt = cvt; /* Enable out path for this pin widget */ snd_hdac_codec_write(&edev->hdac, pin->nid, 0, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT); /* Enable transmission */ snd_hdac_codec_write(&edev->hdac, cvt->nid, 0, AC_VERB_SET_DIGI_CONVERT_1, 1); /* Category Code (CC) to zero */ snd_hdac_codec_write(&edev->hdac, cvt->nid, 0, AC_VERB_SET_DIGI_CONVERT_2, 0); snd_hdac_codec_write(&edev->hdac, pin->nid, 0, AC_VERB_SET_CONNECT_SEL, 0); return 0; } static int hdac_hdmi_add_cvt(struct hdac_ext_device *edev, hda_nid_t nid) { struct hdac_hdmi_priv *hdmi = edev->private_data; struct hdac_hdmi_cvt *cvt; cvt = kzalloc(sizeof(*cvt), GFP_KERNEL); if (!cvt) return -ENOMEM; cvt->nid = nid; list_add_tail(&cvt->head, &hdmi->cvt_list); hdmi->num_cvt++; return hdac_hdmi_query_cvt_params(&edev->hdac, cvt); } static void hdac_hdmi_present_sense(struct hdac_hdmi_pin *pin, int repoll) { struct hdac_ext_device *edev = pin->edev; int val; if (!edev) return; pin->repoll_count = repoll; pm_runtime_get_sync(&edev->hdac.dev); val = snd_hdac_codec_read(&edev->hdac, pin->nid, 0, AC_VERB_GET_PIN_SENSE, 0); dev_dbg(&edev->hdac.dev, "Pin sense val %x for pin: %d\n", val, pin->nid); pin->eld.monitor_present = !!(val & AC_PINSENSE_PRESENCE); pin->eld.eld_valid = !!(val & AC_PINSENSE_ELDV); if (!pin->eld.monitor_present || !pin->eld.eld_valid) { dev_dbg(&edev->hdac.dev, "%s: disconnect for pin %d\n", __func__, pin->nid); goto put_hdac_device; } if (pin->eld.monitor_present && pin->eld.eld_valid) { /* TODO: use i915 component for reading ELD later */ if (hdac_hdmi_get_eld(&edev->hdac, pin->nid, pin->eld.eld_buffer, &pin->eld.eld_size) == 0) { print_hex_dump_bytes("ELD: ", DUMP_PREFIX_OFFSET, pin->eld.eld_buffer, pin->eld.eld_size); } else { pin->eld.monitor_present = false; pin->eld.eld_valid = false; } } /* * Sometimes the pin_sense may present invalid monitor * present and eld_valid. If ELD data is not valid, loop few * more times to get correct pin sense and valid ELD. */ if ((!pin->eld.monitor_present || !pin->eld.eld_valid) && repoll) schedule_delayed_work(&pin->work, msecs_to_jiffies(300)); put_hdac_device: pm_runtime_put_sync(&edev->hdac.dev); } static void hdac_hdmi_repoll_eld(struct work_struct *work) { struct hdac_hdmi_pin *pin = container_of(to_delayed_work(work), struct hdac_hdmi_pin, work); /* picked from legacy HDA driver */ if (pin->repoll_count++ > 6) pin->repoll_count = 0; hdac_hdmi_present_sense(pin, pin->repoll_count); } static int hdac_hdmi_add_pin(struct hdac_ext_device *edev, hda_nid_t nid) { struct hdac_hdmi_priv *hdmi = edev->private_data; struct hdac_hdmi_pin *pin; pin = kzalloc(sizeof(*pin), GFP_KERNEL); if (!pin) return -ENOMEM; pin->nid = nid; list_add_tail(&pin->head, &hdmi->pin_list); hdmi->num_pin++; pin->edev = edev; INIT_DELAYED_WORK(&pin->work, hdac_hdmi_repoll_eld); return 0; } #define INTEL_VENDOR_NID 0x08 #define INTEL_GET_VENDOR_VERB 0xf81 #define INTEL_SET_VENDOR_VERB 0x781 #define INTEL_EN_DP12 0x02 /* enable DP 1.2 features */ #define INTEL_EN_ALL_PIN_CVTS 0x01 /* enable 2nd & 3rd pins and convertors */ static void hdac_hdmi_skl_enable_all_pins(struct hdac_device *hdac) { unsigned int vendor_param; vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0, INTEL_GET_VENDOR_VERB, 0); if (vendor_param == -1 || vendor_param & INTEL_EN_ALL_PIN_CVTS) return; vendor_param |= INTEL_EN_ALL_PIN_CVTS; vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0, INTEL_SET_VENDOR_VERB, vendor_param); if (vendor_param == -1) return; } static void hdac_hdmi_skl_enable_dp12(struct hdac_device *hdac) { unsigned int vendor_param; vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0, INTEL_GET_VENDOR_VERB, 0); if (vendor_param == -1 || vendor_param & INTEL_EN_DP12) return; /* enable DP1.2 mode */ vendor_param |= INTEL_EN_DP12; vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0, INTEL_SET_VENDOR_VERB, vendor_param); if (vendor_param == -1) return; } /* * Parse all nodes and store the cvt/pin nids in array * Add one time initialization for pin and cvt widgets */ static int hdac_hdmi_parse_and_map_nid(struct hdac_ext_device *edev) { hda_nid_t nid; int i, num_nodes; struct hdac_device *hdac = &edev->hdac; struct hdac_hdmi_priv *hdmi = edev->private_data; int ret; hdac_hdmi_skl_enable_all_pins(hdac); hdac_hdmi_skl_enable_dp12(hdac); num_nodes = snd_hdac_get_sub_nodes(hdac, hdac->afg, &nid); if (!nid || num_nodes <= 0) { dev_warn(&hdac->dev, "HDMI: failed to get afg sub nodes\n"); return -EINVAL; } hdac->num_nodes = num_nodes; hdac->start_nid = nid; for (i = 0; i < hdac->num_nodes; i++, nid++) { unsigned int caps; unsigned int type; caps = get_wcaps(hdac, nid); type = get_wcaps_type(caps); if (!(caps & AC_WCAP_DIGITAL)) continue; switch (type) { case AC_WID_AUD_OUT: ret = hdac_hdmi_add_cvt(edev, nid); if (ret < 0) return ret; break; case AC_WID_PIN: ret = hdac_hdmi_add_pin(edev, nid); if (ret < 0) return ret; break; } } hdac->end_nid = nid; if (!hdmi->num_pin || !hdmi->num_cvt) return -EIO; return hdac_hdmi_init_dai_map(edev); } static void hdac_hdmi_eld_notify_cb(void *aptr, int port) { struct hdac_ext_device *edev = aptr; struct hdac_hdmi_priv *hdmi = edev->private_data; struct hdac_hdmi_pin *pin; struct snd_soc_codec *codec = edev->scodec; /* Don't know how this mapping is derived */ hda_nid_t pin_nid = port + 0x04; dev_dbg(&edev->hdac.dev, "%s: for pin: %d\n", __func__, pin_nid); /* * skip notification during system suspend (but not in runtime PM); * the state will be updated at resume. Also since the ELD and * connection states are updated in anyway at the end of the resume, * we can skip it when received during PM process. */ if (snd_power_get_state(codec->component.card->snd_card) != SNDRV_CTL_POWER_D0) return; if (atomic_read(&edev->hdac.in_pm)) return; list_for_each_entry(pin, &hdmi->pin_list, head) { if (pin->nid == pin_nid) hdac_hdmi_present_sense(pin, 1); } } static struct i915_audio_component_audio_ops aops = { .pin_eld_notify = hdac_hdmi_eld_notify_cb, }; static int hdmi_codec_probe(struct snd_soc_codec *codec) { struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec); struct hdac_hdmi_priv *hdmi = edev->private_data; struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(&codec->component); struct hdac_hdmi_pin *pin; int ret; edev->scodec = codec; create_fill_widget_route_map(dapm, &hdmi->dai_map[0]); aops.audio_ptr = edev; ret = snd_hdac_i915_register_notifier(&aops); if (ret < 0) { dev_err(&edev->hdac.dev, "notifier register failed: err: %d\n", ret); return ret; } list_for_each_entry(pin, &hdmi->pin_list, head) hdac_hdmi_present_sense(pin, 1); /* Imp: Store the card pointer in hda_codec */ edev->card = dapm->card->snd_card; /* * hdac_device core already sets the state to active and calls * get_noresume. So enable runtime and set the device to suspend. */ pm_runtime_enable(&edev->hdac.dev); pm_runtime_put(&edev->hdac.dev); pm_runtime_suspend(&edev->hdac.dev); return 0; } static int hdmi_codec_remove(struct snd_soc_codec *codec) { struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec); pm_runtime_disable(&edev->hdac.dev); return 0; } static struct snd_soc_codec_driver hdmi_hda_codec = { .probe = hdmi_codec_probe, .remove = hdmi_codec_remove, .idle_bias_off = true, }; static struct snd_soc_dai_ops hdmi_dai_ops = { .startup = hdac_hdmi_pcm_open, .shutdown = hdac_hdmi_pcm_close, .hw_params = hdac_hdmi_set_hw_params, .prepare = hdac_hdmi_playback_prepare, .hw_free = hdac_hdmi_playback_cleanup, }; static struct snd_soc_dai_driver hdmi_dais[] = { { .name = "intel-hdmi-hif1", .playback = { .stream_name = "hif1", .channels_min = 2, .channels_max = 2, .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000, .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE, }, .ops = &hdmi_dai_ops, }, }; static int hdac_hdmi_dev_probe(struct hdac_ext_device *edev) { struct hdac_device *codec = &edev->hdac; struct hdac_hdmi_priv *hdmi_priv; int ret = 0; hdmi_priv = devm_kzalloc(&codec->dev, sizeof(*hdmi_priv), GFP_KERNEL); if (hdmi_priv == NULL) return -ENOMEM; edev->private_data = hdmi_priv; dev_set_drvdata(&codec->dev, edev); INIT_LIST_HEAD(&hdmi_priv->pin_list); INIT_LIST_HEAD(&hdmi_priv->cvt_list); ret = hdac_hdmi_parse_and_map_nid(edev); if (ret < 0) return ret; /* ASoC specific initialization */ return snd_soc_register_codec(&codec->dev, &hdmi_hda_codec, hdmi_dais, ARRAY_SIZE(hdmi_dais)); } static int hdac_hdmi_dev_remove(struct hdac_ext_device *edev) { struct hdac_hdmi_priv *hdmi = edev->private_data; struct hdac_hdmi_pin *pin, *pin_next; struct hdac_hdmi_cvt *cvt, *cvt_next; snd_soc_unregister_codec(&edev->hdac.dev); list_for_each_entry_safe(cvt, cvt_next, &hdmi->cvt_list, head) { list_del(&cvt->head); kfree(cvt); } list_for_each_entry_safe(pin, pin_next, &hdmi->pin_list, head) { list_del(&pin->head); kfree(pin); } return 0; } #ifdef CONFIG_PM static int hdac_hdmi_runtime_suspend(struct device *dev) { struct hdac_ext_device *edev = to_hda_ext_device(dev); struct hdac_device *hdac = &edev->hdac; struct hdac_bus *bus = hdac->bus; int err; dev_dbg(dev, "Enter: %s\n", __func__); /* controller may not have been initialized for the first time */ if (!bus) return 0; /* Power down afg */ if (!snd_hdac_check_power_state(hdac, hdac->afg, AC_PWRST_D3)) snd_hdac_codec_write(hdac, hdac->afg, 0, AC_VERB_SET_POWER_STATE, AC_PWRST_D3); err = snd_hdac_display_power(bus, false); if (err < 0) { dev_err(bus->dev, "Cannot turn on display power on i915\n"); return err; } return 0; } static int hdac_hdmi_runtime_resume(struct device *dev) { struct hdac_ext_device *edev = to_hda_ext_device(dev); struct hdac_device *hdac = &edev->hdac; struct hdac_bus *bus = hdac->bus; int err; dev_dbg(dev, "Enter: %s\n", __func__); /* controller may not have been initialized for the first time */ if (!bus) return 0; err = snd_hdac_display_power(bus, true); if (err < 0) { dev_err(bus->dev, "Cannot turn on display power on i915\n"); return err; } /* Power up afg */ if (!snd_hdac_check_power_state(hdac, hdac->afg, AC_PWRST_D0)) snd_hdac_codec_write(hdac, hdac->afg, 0, AC_VERB_SET_POWER_STATE, AC_PWRST_D0); return 0; } #else #define hdac_hdmi_runtime_suspend NULL #define hdac_hdmi_runtime_resume NULL #endif static const struct dev_pm_ops hdac_hdmi_pm = { SET_RUNTIME_PM_OPS(hdac_hdmi_runtime_suspend, hdac_hdmi_runtime_resume, NULL) }; static const struct hda_device_id hdmi_list[] = { HDA_CODEC_EXT_ENTRY(0x80862809, 0x100000, "Skylake HDMI", 0), {} }; MODULE_DEVICE_TABLE(hdaudio, hdmi_list); static struct hdac_ext_driver hdmi_driver = { . hdac = { .driver = { .name = "HDMI HDA Codec", .pm = &hdac_hdmi_pm, }, .id_table = hdmi_list, }, .probe = hdac_hdmi_dev_probe, .remove = hdac_hdmi_dev_remove, }; static int __init hdmi_init(void) { return snd_hda_ext_driver_register(&hdmi_driver); } static void __exit hdmi_exit(void) { snd_hda_ext_driver_unregister(&hdmi_driver); } module_init(hdmi_init); module_exit(hdmi_exit); MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("HDMI HD codec"); MODULE_AUTHOR("Samreen Nilofer"); MODULE_AUTHOR("Subhransu S. Prusty");