/* * 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 "../../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 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_pin { struct list_head head; hda_nid_t nid; int num_mux_nids; hda_nid_t mux_nids[HDA_MAX_CONNECTIONS]; }; 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 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 val; 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]; val = snd_hdac_codec_read(&hdac->hdac, dai_map->pin->nid, 0, AC_VERB_GET_PIN_SENSE, 0); dev_info(&hdac->hdac.dev, "Val for AC_VERB_GET_PIN_SENSE: %x\n", val); if ((!(val & AC_PINSENSE_PRESENCE)) || (!(val & AC_PINSENSE_ELDV))) { dev_err(&hdac->hdac.dev, "Monitor presence invalid with val: %x\n", val); 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); snd_pcm_hw_constraint_step(substream->runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, 2); return 0; } 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 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++; return 0; } /* * 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; 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 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); edev->scodec = codec; create_fill_widget_route_map(dapm, &hdmi->dai_map[0]); /* 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");