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Diffstat (limited to '')
| -rw-r--r-- | sound/soc/codecs/hdac_hdmi.c | 2312 |
1 files changed, 2312 insertions, 0 deletions
diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c new file mode 100644 index 000000000..4594b1447 --- /dev/null +++ b/sound/soc/codecs/hdac_hdmi.c @@ -0,0 +1,2312 @@ +/* + * hdac_hdmi.c - ASoc HDA-HDMI codec driver for Intel platforms + * + * Copyright (C) 2014-2015 Intel Corp + * Author: Samreen Nilofer <samreen.nilofer@intel.com> + * Subhransu S. Prusty <subhransu.s.prusty@intel.com> + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * + * 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 <linux/init.h> +#include <linux/delay.h> +#include <linux/module.h> +#include <linux/pm_runtime.h> +#include <linux/hdmi.h> +#include <drm/drm_edid.h> +#include <sound/pcm_params.h> +#include <sound/jack.h> +#include <sound/soc.h> +#include <sound/hdaudio_ext.h> +#include <sound/hda_i915.h> +#include <sound/pcm_drm_eld.h> +#include <sound/hda_chmap.h> +#include "../../hda/local.h" +#include "hdac_hdmi.h" + +#define NAME_SIZE 32 + +#define AMP_OUT_MUTE 0xb080 +#define AMP_OUT_UNMUTE 0xb000 +#define PIN_OUT (AC_PINCTL_OUT_EN) + +#define HDA_MAX_CONNECTIONS 32 + +#define HDA_MAX_CVTS 3 +#define HDA_MAX_PORTS 3 + +#define ELD_MAX_SIZE 256 +#define ELD_FIXED_BYTES 20 + +#define ELD_VER_CEA_861D 2 +#define ELD_VER_PARTIAL 31 +#define ELD_MAX_MNL 16 + +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; + const char *name; + struct hdac_hdmi_cvt_params params; +}; + +/* Currently only spk_alloc, more to be added */ +struct hdac_hdmi_parsed_eld { + u8 spk_alloc; +}; + +struct hdac_hdmi_eld { + bool monitor_present; + bool eld_valid; + int eld_size; + char eld_buffer[ELD_MAX_SIZE]; + struct hdac_hdmi_parsed_eld info; +}; + +struct hdac_hdmi_pin { + struct list_head head; + hda_nid_t nid; + bool mst_capable; + struct hdac_hdmi_port *ports; + int num_ports; + struct hdac_device *hdev; +}; + +struct hdac_hdmi_port { + struct list_head head; + int id; + struct hdac_hdmi_pin *pin; + int num_mux_nids; + hda_nid_t mux_nids[HDA_MAX_CONNECTIONS]; + struct hdac_hdmi_eld eld; + const char *jack_pin; + struct snd_soc_dapm_context *dapm; + const char *output_pin; +}; + +struct hdac_hdmi_pcm { + struct list_head head; + int pcm_id; + struct list_head port_list; + struct hdac_hdmi_cvt *cvt; + struct snd_soc_jack *jack; + int stream_tag; + int channels; + int format; + bool chmap_set; + unsigned char chmap[8]; /* ALSA API channel-map */ + struct mutex lock; + int jack_event; +}; + +struct hdac_hdmi_dai_port_map { + int dai_id; + struct hdac_hdmi_port *port; + struct hdac_hdmi_cvt *cvt; +}; + +struct hdac_hdmi_drv_data { + unsigned int vendor_nid; +}; + +struct hdac_hdmi_priv { + struct hdac_device *hdev; + struct snd_soc_component *component; + struct snd_card *card; + struct hdac_hdmi_dai_port_map dai_map[HDA_MAX_CVTS]; + struct list_head pin_list; + struct list_head cvt_list; + struct list_head pcm_list; + int num_pin; + int num_cvt; + int num_ports; + struct mutex pin_mutex; + struct hdac_chmap chmap; + struct hdac_hdmi_drv_data *drv_data; + struct snd_soc_dai_driver *dai_drv; +}; + +#define hdev_to_hdmi_priv(_hdev) dev_get_drvdata(&(_hdev)->dev) + +static struct hdac_hdmi_pcm * +hdac_hdmi_get_pcm_from_cvt(struct hdac_hdmi_priv *hdmi, + struct hdac_hdmi_cvt *cvt) +{ + struct hdac_hdmi_pcm *pcm; + + list_for_each_entry(pcm, &hdmi->pcm_list, head) { + if (pcm->cvt == cvt) + return pcm; + } + + return NULL; +} + +static void hdac_hdmi_jack_report(struct hdac_hdmi_pcm *pcm, + struct hdac_hdmi_port *port, bool is_connect) +{ + struct hdac_device *hdev = port->pin->hdev; + + if (is_connect) + snd_soc_dapm_enable_pin(port->dapm, port->jack_pin); + else + snd_soc_dapm_disable_pin(port->dapm, port->jack_pin); + + if (is_connect) { + /* + * Report Jack connect event when a device is connected + * for the first time where same PCM is attached to multiple + * ports. + */ + if (pcm->jack_event == 0) { + dev_dbg(&hdev->dev, + "jack report for pcm=%d\n", + pcm->pcm_id); + snd_soc_jack_report(pcm->jack, SND_JACK_AVOUT, + SND_JACK_AVOUT); + } + pcm->jack_event++; + } else { + /* + * Report Jack disconnect event when a device is disconnected + * is the only last connected device when same PCM is attached + * to multiple ports. + */ + if (pcm->jack_event == 1) + snd_soc_jack_report(pcm->jack, 0, SND_JACK_AVOUT); + if (pcm->jack_event > 0) + pcm->jack_event--; + } + + snd_soc_dapm_sync(port->dapm); +} + +/* MST supported verbs */ +/* + * Get the no devices that can be connected to a port on the Pin widget. + */ +static int hdac_hdmi_get_port_len(struct hdac_device *hdev, hda_nid_t nid) +{ + unsigned int caps; + unsigned int type, param; + + caps = get_wcaps(hdev, nid); + type = get_wcaps_type(caps); + + if (!(caps & AC_WCAP_DIGITAL) || (type != AC_WID_PIN)) + return 0; + + param = snd_hdac_read_parm_uncached(hdev, nid, AC_PAR_DEVLIST_LEN); + if (param == -1) + return param; + + return param & AC_DEV_LIST_LEN_MASK; +} + +/* + * Get the port entry select on the pin. Return the port entry + * id selected on the pin. Return 0 means the first port entry + * is selected or MST is not supported. + */ +static int hdac_hdmi_port_select_get(struct hdac_device *hdev, + struct hdac_hdmi_port *port) +{ + return snd_hdac_codec_read(hdev, port->pin->nid, + 0, AC_VERB_GET_DEVICE_SEL, 0); +} + +/* + * Sets the selected port entry for the configuring Pin widget verb. + * returns error if port set is not equal to port get otherwise success + */ +static int hdac_hdmi_port_select_set(struct hdac_device *hdev, + struct hdac_hdmi_port *port) +{ + int num_ports; + + if (!port->pin->mst_capable) + return 0; + + /* AC_PAR_DEVLIST_LEN is 0 based. */ + num_ports = hdac_hdmi_get_port_len(hdev, port->pin->nid); + if (num_ports < 0) + return -EIO; + /* + * Device List Length is a 0 based integer value indicating the + * number of sink device that a MST Pin Widget can support. + */ + if (num_ports + 1 < port->id) + return 0; + + snd_hdac_codec_write(hdev, port->pin->nid, 0, + AC_VERB_SET_DEVICE_SEL, port->id); + + if (port->id != hdac_hdmi_port_select_get(hdev, port)) + return -EIO; + + dev_dbg(&hdev->dev, "Selected the port=%d\n", port->id); + + return 0; +} + +static struct hdac_hdmi_pcm *get_hdmi_pcm_from_id(struct hdac_hdmi_priv *hdmi, + int pcm_idx) +{ + struct hdac_hdmi_pcm *pcm; + + list_for_each_entry(pcm, &hdmi->pcm_list, head) { + if (pcm->pcm_id == pcm_idx) + return pcm; + } + + return NULL; +} + +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); + +} + +static void +hdac_hdmi_set_dip_index(struct hdac_device *hdev, hda_nid_t pin_nid, + int packet_index, int byte_index) +{ + int val; + + val = (packet_index << 5) | (byte_index & 0x1f); + snd_hdac_codec_write(hdev, pin_nid, 0, AC_VERB_SET_HDMI_DIP_INDEX, val); +} + +struct dp_audio_infoframe { + u8 type; /* 0x84 */ + u8 len; /* 0x1b */ + u8 ver; /* 0x11 << 2 */ + + u8 CC02_CT47; /* match with HDMI infoframe from this on */ + u8 SS01_SF24; + u8 CXT04; + u8 CA; + u8 LFEPBL01_LSV36_DM_INH7; +}; + +static int hdac_hdmi_setup_audio_infoframe(struct hdac_device *hdev, + struct hdac_hdmi_pcm *pcm, struct hdac_hdmi_port *port) +{ + uint8_t buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE]; + struct hdmi_audio_infoframe frame; + struct hdac_hdmi_pin *pin = port->pin; + struct dp_audio_infoframe dp_ai; + struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); + struct hdac_hdmi_cvt *cvt = pcm->cvt; + u8 *dip; + int ret; + int i; + const u8 *eld_buf; + u8 conn_type; + int channels, ca; + + ca = snd_hdac_channel_allocation(hdev, port->eld.info.spk_alloc, + pcm->channels, pcm->chmap_set, true, pcm->chmap); + + channels = snd_hdac_get_active_channels(ca); + hdmi->chmap.ops.set_channel_count(hdev, cvt->nid, channels); + + snd_hdac_setup_channel_mapping(&hdmi->chmap, pin->nid, false, ca, + pcm->channels, pcm->chmap, pcm->chmap_set); + + eld_buf = port->eld.eld_buffer; + conn_type = drm_eld_get_conn_type(eld_buf); + + switch (conn_type) { + case DRM_ELD_CONN_TYPE_HDMI: + hdmi_audio_infoframe_init(&frame); + + frame.channels = channels; + frame.channel_allocation = ca; + + ret = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer)); + if (ret < 0) + return ret; + + break; + + case DRM_ELD_CONN_TYPE_DP: + memset(&dp_ai, 0, sizeof(dp_ai)); + dp_ai.type = 0x84; + dp_ai.len = 0x1b; + dp_ai.ver = 0x11 << 2; + dp_ai.CC02_CT47 = channels - 1; + dp_ai.CA = ca; + + dip = (u8 *)&dp_ai; + break; + + default: + dev_err(&hdev->dev, "Invalid connection type: %d\n", conn_type); + return -EIO; + } + + /* stop infoframe transmission */ + hdac_hdmi_set_dip_index(hdev, pin->nid, 0x0, 0x0); + snd_hdac_codec_write(hdev, pin->nid, 0, + AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_DISABLE); + + + /* Fill infoframe. Index auto-incremented */ + hdac_hdmi_set_dip_index(hdev, pin->nid, 0x0, 0x0); + if (conn_type == DRM_ELD_CONN_TYPE_HDMI) { + for (i = 0; i < sizeof(buffer); i++) + snd_hdac_codec_write(hdev, pin->nid, 0, + AC_VERB_SET_HDMI_DIP_DATA, buffer[i]); + } else { + for (i = 0; i < sizeof(dp_ai); i++) + snd_hdac_codec_write(hdev, pin->nid, 0, + AC_VERB_SET_HDMI_DIP_DATA, dip[i]); + } + + /* Start infoframe */ + hdac_hdmi_set_dip_index(hdev, pin->nid, 0x0, 0x0); + snd_hdac_codec_write(hdev, pin->nid, 0, + AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_BEST); + + return 0; +} + +static int hdac_hdmi_set_tdm_slot(struct snd_soc_dai *dai, + unsigned int tx_mask, unsigned int rx_mask, + int slots, int slot_width) +{ + struct hdac_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai); + struct hdac_device *hdev = hdmi->hdev; + struct hdac_hdmi_dai_port_map *dai_map; + struct hdac_hdmi_pcm *pcm; + + dev_dbg(&hdev->dev, "%s: strm_tag: %d\n", __func__, tx_mask); + + dai_map = &hdmi->dai_map[dai->id]; + + pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt); + + if (pcm) + pcm->stream_tag = (tx_mask << 4); + + return 0; +} + +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_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai); + struct hdac_device *hdev = hdmi->hdev; + struct hdac_hdmi_dai_port_map *dai_map; + struct hdac_hdmi_port *port; + struct hdac_hdmi_pcm *pcm; + int format; + + dai_map = &hdmi->dai_map[dai->id]; + port = dai_map->port; + + if (!port) + return -ENODEV; + + if ((!port->eld.monitor_present) || (!port->eld.eld_valid)) { + dev_err(&hdev->dev, + "device is not configured for this pin:port%d:%d\n", + port->pin->nid, port->id); + return -ENODEV; + } + + format = snd_hdac_calc_stream_format(params_rate(hparams), + params_channels(hparams), params_format(hparams), + dai->driver->playback.sig_bits, 0); + + pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt); + if (!pcm) + return -EIO; + + pcm->format = format; + pcm->channels = params_channels(hparams); + + return 0; +} + +static int hdac_hdmi_query_port_connlist(struct hdac_device *hdev, + struct hdac_hdmi_pin *pin, + struct hdac_hdmi_port *port) +{ + if (!(get_wcaps(hdev, pin->nid) & AC_WCAP_CONN_LIST)) { + dev_warn(&hdev->dev, + "HDMI: pin %d wcaps %#x does not support connection list\n", + pin->nid, get_wcaps(hdev, pin->nid)); + return -EINVAL; + } + + if (hdac_hdmi_port_select_set(hdev, port) < 0) + return -EIO; + + port->num_mux_nids = snd_hdac_get_connections(hdev, pin->nid, + port->mux_nids, HDA_MAX_CONNECTIONS); + if (port->num_mux_nids == 0) + dev_warn(&hdev->dev, + "No connections found for pin:port %d:%d\n", + pin->nid, port->id); + + dev_dbg(&hdev->dev, "num_mux_nids %d for pin:port %d:%d\n", + port->num_mux_nids, pin->nid, port->id); + + return port->num_mux_nids; +} + +/* + * Query pcm list and return port to which stream is routed. + * + * Also query connection list of the pin, to validate the cvt to port map. + * + * Same stream rendering to multiple ports simultaneously can be done + * possibly, but not supported for now in driver. So return the first port + * connected. + */ +static struct hdac_hdmi_port *hdac_hdmi_get_port_from_cvt( + struct hdac_device *hdev, + struct hdac_hdmi_priv *hdmi, + struct hdac_hdmi_cvt *cvt) +{ + struct hdac_hdmi_pcm *pcm; + struct hdac_hdmi_port *port = NULL; + int ret, i; + + list_for_each_entry(pcm, &hdmi->pcm_list, head) { + if (pcm->cvt == cvt) { + if (list_empty(&pcm->port_list)) + continue; + + list_for_each_entry(port, &pcm->port_list, head) { + mutex_lock(&pcm->lock); + ret = hdac_hdmi_query_port_connlist(hdev, + port->pin, port); + mutex_unlock(&pcm->lock); + if (ret < 0) + continue; + + for (i = 0; i < port->num_mux_nids; i++) { + if (port->mux_nids[i] == cvt->nid && + port->eld.monitor_present && + port->eld.eld_valid) + return port; + } + } + } + } + + return NULL; +} + +/* + * This tries to get a valid pin and set the HW constraints based on the + * ELD. Even if a valid pin is not found return success so that device open + * doesn't fail. + */ +static int hdac_hdmi_pcm_open(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct hdac_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai); + struct hdac_device *hdev = hdmi->hdev; + struct hdac_hdmi_dai_port_map *dai_map; + struct hdac_hdmi_cvt *cvt; + struct hdac_hdmi_port *port; + int ret; + + dai_map = &hdmi->dai_map[dai->id]; + + cvt = dai_map->cvt; + port = hdac_hdmi_get_port_from_cvt(hdev, hdmi, cvt); + + /* + * To make PA and other userland happy. + * userland scans devices so returning error does not help. + */ + if (!port) + return 0; + if ((!port->eld.monitor_present) || + (!port->eld.eld_valid)) { + + dev_warn(&hdev->dev, + "Failed: present?:%d ELD valid?:%d pin:port: %d:%d\n", + port->eld.monitor_present, port->eld.eld_valid, + port->pin->nid, port->id); + + return 0; + } + + dai_map->port = port; + + ret = hdac_hdmi_eld_limit_formats(substream->runtime, + port->eld.eld_buffer); + if (ret < 0) + return ret; + + return snd_pcm_hw_constraint_eld(substream->runtime, + port->eld.eld_buffer); +} + +static void hdac_hdmi_pcm_close(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct hdac_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai); + struct hdac_hdmi_dai_port_map *dai_map; + struct hdac_hdmi_pcm *pcm; + + dai_map = &hdmi->dai_map[dai->id]; + + pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt); + + if (pcm) { + mutex_lock(&pcm->lock); + pcm->chmap_set = false; + memset(pcm->chmap, 0, sizeof(pcm->chmap)); + pcm->channels = 0; + mutex_unlock(&pcm->lock); + } + + if (dai_map->port) + dai_map->port = NULL; +} + +static int +hdac_hdmi_query_cvt_params(struct hdac_device *hdev, struct hdac_hdmi_cvt *cvt) +{ + unsigned int chans; + struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); + int err; + + chans = get_wcaps(hdev, cvt->nid); + chans = get_wcaps_channels(chans); + + cvt->params.channels_min = 2; + + cvt->params.channels_max = chans; + if (chans > hdmi->chmap.channels_max) + hdmi->chmap.channels_max = chans; + + err = snd_hdac_query_supported_pcm(hdev, cvt->nid, + &cvt->params.rates, + &cvt->params.formats, + &cvt->params.maxbps); + if (err < 0) + dev_err(&hdev->dev, + "Failed to query pcm params for nid %d: %d\n", + cvt->nid, err); + + return err; +} + +static int hdac_hdmi_fill_widget_info(struct device *dev, + struct snd_soc_dapm_widget *w, enum snd_soc_dapm_type id, + void *priv, const char *wname, const char *stream, + struct snd_kcontrol_new *wc, int numkc, + int (*event)(struct snd_soc_dapm_widget *, + struct snd_kcontrol *, int), unsigned short event_flags) +{ + w->id = id; + w->name = devm_kstrdup(dev, wname, GFP_KERNEL); + if (!w->name) + return -ENOMEM; + + w->sname = stream; + w->reg = SND_SOC_NOPM; + w->shift = 0; + w->kcontrol_news = wc; + w->num_kcontrols = numkc; + w->priv = priv; + w->event = event; + w->event_flags = event_flags; + + return 0; +} + +static void hdac_hdmi_fill_route(struct snd_soc_dapm_route *route, + const char *sink, const char *control, const char *src, + int (*handler)(struct snd_soc_dapm_widget *src, + struct snd_soc_dapm_widget *sink)) +{ + route->sink = sink; + route->source = src; + route->control = control; + route->connected = handler; +} + +static struct hdac_hdmi_pcm *hdac_hdmi_get_pcm(struct hdac_device *hdev, + struct hdac_hdmi_port *port) +{ + struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); + struct hdac_hdmi_pcm *pcm = NULL; + struct hdac_hdmi_port *p; + + list_for_each_entry(pcm, &hdmi->pcm_list, head) { + if (list_empty(&pcm->port_list)) + continue; + + list_for_each_entry(p, &pcm->port_list, head) { + if (p->id == port->id && port->pin == p->pin) + return pcm; + } + } + + return NULL; +} + +static void hdac_hdmi_set_power_state(struct hdac_device *hdev, + hda_nid_t nid, unsigned int pwr_state) +{ + int count; + unsigned int state; + + if (get_wcaps(hdev, nid) & AC_WCAP_POWER) { + if (!snd_hdac_check_power_state(hdev, nid, pwr_state)) { + for (count = 0; count < 10; count++) { + snd_hdac_codec_read(hdev, nid, 0, + AC_VERB_SET_POWER_STATE, + pwr_state); + state = snd_hdac_sync_power_state(hdev, + nid, pwr_state); + if (!(state & AC_PWRST_ERROR)) + break; + } + } + } +} + +static void hdac_hdmi_set_amp(struct hdac_device *hdev, + hda_nid_t nid, int val) +{ + if (get_wcaps(hdev, nid) & AC_WCAP_OUT_AMP) + snd_hdac_codec_write(hdev, nid, 0, + AC_VERB_SET_AMP_GAIN_MUTE, val); +} + + +static int hdac_hdmi_pin_output_widget_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kc, int event) +{ + struct hdac_hdmi_port *port = w->priv; + struct hdac_device *hdev = dev_to_hdac_dev(w->dapm->dev); + struct hdac_hdmi_pcm *pcm; + + dev_dbg(&hdev->dev, "%s: widget: %s event: %x\n", + __func__, w->name, event); + + pcm = hdac_hdmi_get_pcm(hdev, port); + if (!pcm) + return -EIO; + + /* set the device if pin is mst_capable */ + if (hdac_hdmi_port_select_set(hdev, port) < 0) + return -EIO; + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + hdac_hdmi_set_power_state(hdev, port->pin->nid, AC_PWRST_D0); + + /* Enable out path for this pin widget */ + snd_hdac_codec_write(hdev, port->pin->nid, 0, + AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT); + + hdac_hdmi_set_amp(hdev, port->pin->nid, AMP_OUT_UNMUTE); + + return hdac_hdmi_setup_audio_infoframe(hdev, pcm, port); + + case SND_SOC_DAPM_POST_PMD: + hdac_hdmi_set_amp(hdev, port->pin->nid, AMP_OUT_MUTE); + + /* Disable out path for this pin widget */ + snd_hdac_codec_write(hdev, port->pin->nid, 0, + AC_VERB_SET_PIN_WIDGET_CONTROL, 0); + + hdac_hdmi_set_power_state(hdev, port->pin->nid, AC_PWRST_D3); + break; + + } + + return 0; +} + +static int hdac_hdmi_cvt_output_widget_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kc, int event) +{ + struct hdac_hdmi_cvt *cvt = w->priv; + struct hdac_device *hdev = dev_to_hdac_dev(w->dapm->dev); + struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); + struct hdac_hdmi_pcm *pcm; + + dev_dbg(&hdev->dev, "%s: widget: %s event: %x\n", + __func__, w->name, event); + + pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, cvt); + if (!pcm) + return -EIO; + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + hdac_hdmi_set_power_state(hdev, cvt->nid, AC_PWRST_D0); + + /* Enable transmission */ + snd_hdac_codec_write(hdev, cvt->nid, 0, + AC_VERB_SET_DIGI_CONVERT_1, 1); + + /* Category Code (CC) to zero */ + snd_hdac_codec_write(hdev, cvt->nid, 0, + AC_VERB_SET_DIGI_CONVERT_2, 0); + + snd_hdac_codec_write(hdev, cvt->nid, 0, + AC_VERB_SET_CHANNEL_STREAMID, pcm->stream_tag); + snd_hdac_codec_write(hdev, cvt->nid, 0, + AC_VERB_SET_STREAM_FORMAT, pcm->format); + break; + + case SND_SOC_DAPM_POST_PMD: + snd_hdac_codec_write(hdev, cvt->nid, 0, + AC_VERB_SET_CHANNEL_STREAMID, 0); + snd_hdac_codec_write(hdev, cvt->nid, 0, + AC_VERB_SET_STREAM_FORMAT, 0); + + hdac_hdmi_set_power_state(hdev, cvt->nid, AC_PWRST_D3); + break; + + } + + return 0; +} + +static int hdac_hdmi_pin_mux_widget_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kc, int event) +{ + struct hdac_hdmi_port *port = w->priv; + struct hdac_device *hdev = dev_to_hdac_dev(w->dapm->dev); + int mux_idx; + + dev_dbg(&hdev->dev, "%s: widget: %s event: %x\n", + __func__, w->name, event); + + if (!kc) + kc = w->kcontrols[0]; + + mux_idx = dapm_kcontrol_get_value(kc); + + /* set the device if pin is mst_capable */ + if (hdac_hdmi_port_select_set(hdev, port) < 0) + return -EIO; + + if (mux_idx > 0) { + snd_hdac_codec_write(hdev, port->pin->nid, 0, + AC_VERB_SET_CONNECT_SEL, (mux_idx - 1)); + } + + return 0; +} + +/* + * Based on user selection, map the PINs with the PCMs. + */ +static int hdac_hdmi_set_pin_port_mux(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + int ret; + struct hdac_hdmi_port *p, *p_next; + struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; + struct snd_soc_dapm_widget *w = snd_soc_dapm_kcontrol_widget(kcontrol); + struct snd_soc_dapm_context *dapm = w->dapm; + struct hdac_hdmi_port *port = w->priv; + struct hdac_device *hdev = dev_to_hdac_dev(dapm->dev); + struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); + struct hdac_hdmi_pcm *pcm = NULL; + const char *cvt_name = e->texts[ucontrol->value.enumerated.item[0]]; + + ret = snd_soc_dapm_put_enum_double(kcontrol, ucontrol); + if (ret < 0) + return ret; + + if (port == NULL) + return -EINVAL; + + mutex_lock(&hdmi->pin_mutex); + list_for_each_entry(pcm, &hdmi->pcm_list, head) { + if (list_empty(&pcm->port_list)) + continue; + + list_for_each_entry_safe(p, p_next, &pcm->port_list, head) { + if (p == port && p->id == port->id && + p->pin == port->pin) { + hdac_hdmi_jack_report(pcm, port, false); + list_del(&p->head); + } + } + } + + /* + * Jack status is not reported during device probe as the + * PCMs are not registered by then. So report it here. + */ + list_for_each_entry(pcm, &hdmi->pcm_list, head) { + if (!strcmp(cvt_name, pcm->cvt->name)) { + list_add_tail(&port->head, &pcm->port_list); + if (port->eld.monitor_present && port->eld.eld_valid) { + hdac_hdmi_jack_report(pcm, port, true); + mutex_unlock(&hdmi->pin_mutex); + return ret; + } + } + } + mutex_unlock(&hdmi->pin_mutex); + + return ret; +} + +/* + * Ideally the Mux inputs should be based on the num_muxs enumerated, but + * the display driver seem to be programming the connection list for the pin + * widget runtime. + * + * So programming all the possible inputs for the mux, the user has to take + * care of selecting the right one and leaving all other inputs selected to + * "NONE" + */ +static int hdac_hdmi_create_pin_port_muxs(struct hdac_device *hdev, + struct hdac_hdmi_port *port, + struct snd_soc_dapm_widget *widget, + const char *widget_name) +{ + struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); + struct hdac_hdmi_pin *pin = port->pin; + struct snd_kcontrol_new *kc; + struct hdac_hdmi_cvt *cvt; + struct soc_enum *se; + char kc_name[NAME_SIZE]; + char mux_items[NAME_SIZE]; + /* To hold inputs to the Pin mux */ + char *items[HDA_MAX_CONNECTIONS]; + int i = 0; + int num_items = hdmi->num_cvt + 1; + + kc = devm_kzalloc(&hdev->dev, sizeof(*kc), GFP_KERNEL); + if (!kc) + return -ENOMEM; + + se = devm_kzalloc(&hdev->dev, sizeof(*se), GFP_KERNEL); + if (!se) + return -ENOMEM; + + snprintf(kc_name, NAME_SIZE, "Pin %d port %d Input", + pin->nid, port->id); + kc->name = devm_kstrdup(&hdev->dev, kc_name, GFP_KERNEL); + if (!kc->name) + return -ENOMEM; + + kc->private_value = (long)se; + kc->iface = SNDRV_CTL_ELEM_IFACE_MIXER; + kc->access = 0; + kc->info = snd_soc_info_enum_double; + kc->put = hdac_hdmi_set_pin_port_mux; + kc->get = snd_soc_dapm_get_enum_double; + + se->reg = SND_SOC_NOPM; + + /* enum texts: ["NONE", "cvt #", "cvt #", ...] */ + se->items = num_items; + se->mask = roundup_pow_of_two(se->items) - 1; + + sprintf(mux_items, "NONE"); + items[i] = devm_kstrdup(&hdev->dev, mux_items, GFP_KERNEL); + if (!items[i]) + return -ENOMEM; + + list_for_each_entry(cvt, &hdmi->cvt_list, head) { + i++; + sprintf(mux_items, "cvt %d", cvt->nid); + items[i] = devm_kstrdup(&hdev->dev, mux_items, GFP_KERNEL); + if (!items[i]) + return -ENOMEM; + } + + se->texts = devm_kmemdup(&hdev->dev, items, + (num_items * sizeof(char *)), GFP_KERNEL); + if (!se->texts) + return -ENOMEM; + + return hdac_hdmi_fill_widget_info(&hdev->dev, widget, + snd_soc_dapm_mux, port, widget_name, NULL, kc, 1, + hdac_hdmi_pin_mux_widget_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_REG); +} + +/* Add cvt <- input <- mux route map */ +static void hdac_hdmi_add_pinmux_cvt_route(struct hdac_device *hdev, + struct snd_soc_dapm_widget *widgets, + struct snd_soc_dapm_route *route, int rindex) +{ + struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); + const struct snd_kcontrol_new *kc; + struct soc_enum *se; + int mux_index = hdmi->num_cvt + hdmi->num_ports; + int i, j; + + for (i = 0; i < hdmi->num_ports; i++) { + kc = widgets[mux_index].kcontrol_news; + se = (struct soc_enum *)kc->private_value; + for (j = 0; j < hdmi->num_cvt; j++) { + hdac_hdmi_fill_route(&route[rindex], + widgets[mux_index].name, + se->texts[j + 1], + widgets[j].name, NULL); + + rindex++; + } + + mux_index++; + } +} + +/* + * Widgets are added in the below sequence + * Converter widgets for num converters enumerated + * Pin-port widgets for num ports for Pins enumerated + * Pin-port mux widgets to represent connenction list of pin widget + * + * For each port, one Mux and One output widget is added + * Total widgets elements = num_cvt + (num_ports * 2); + * + * Routes are added as below: + * pin-port mux -> pin (based on num_ports) + * cvt -> "Input sel control" -> pin-port_mux + * + * Total route elements: + * num_ports + (pin_muxes * num_cvt) + */ +static int create_fill_widget_route_map(struct snd_soc_dapm_context *dapm) +{ + struct snd_soc_dapm_widget *widgets; + struct snd_soc_dapm_route *route; + struct hdac_device *hdev = dev_to_hdac_dev(dapm->dev); + struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); + struct snd_soc_dai_driver *dai_drv = hdmi->dai_drv; + char widget_name[NAME_SIZE]; + struct hdac_hdmi_cvt *cvt; + struct hdac_hdmi_pin *pin; + int ret, i = 0, num_routes = 0, j; + + if (list_empty(&hdmi->cvt_list) || list_empty(&hdmi->pin_list)) + return -EINVAL; + + widgets = devm_kzalloc(dapm->dev, (sizeof(*widgets) * + ((2 * hdmi->num_ports) + hdmi->num_cvt)), + GFP_KERNEL); + + if (!widgets) + return -ENOMEM; + + /* DAPM widgets to represent each converter widget */ + list_for_each_entry(cvt, &hdmi->cvt_list, head) { + sprintf(widget_name, "Converter %d", cvt->nid); + ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i], + snd_soc_dapm_aif_in, cvt, + widget_name, dai_drv[i].playback.stream_name, NULL, 0, + hdac_hdmi_cvt_output_widget_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD); + if (ret < 0) + return ret; + i++; + } + + list_for_each_entry(pin, &hdmi->pin_list, head) { + for (j = 0; j < pin->num_ports; j++) { + sprintf(widget_name, "hif%d-%d Output", + pin->nid, pin->ports[j].id); + ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i], + snd_soc_dapm_output, &pin->ports[j], + widget_name, NULL, NULL, 0, + hdac_hdmi_pin_output_widget_event, + SND_SOC_DAPM_PRE_PMU | + SND_SOC_DAPM_POST_PMD); + if (ret < 0) + return ret; + pin->ports[j].output_pin = widgets[i].name; + i++; + } + } + + /* DAPM widgets to represent the connection list to pin widget */ + list_for_each_entry(pin, &hdmi->pin_list, head) { + for (j = 0; j < pin->num_ports; j++) { + sprintf(widget_name, "Pin%d-Port%d Mux", + pin->nid, pin->ports[j].id); + ret = hdac_hdmi_create_pin_port_muxs(hdev, + &pin->ports[j], &widgets[i], + widget_name); + if (ret < 0) + return ret; + i++; + + /* For cvt to pin_mux mapping */ + num_routes += hdmi->num_cvt; + + /* For pin_mux to pin mapping */ + num_routes++; + } + } + + route = devm_kzalloc(dapm->dev, (sizeof(*route) * num_routes), + GFP_KERNEL); + if (!route) + return -ENOMEM; + + i = 0; + /* Add pin <- NULL <- mux route map */ + list_for_each_entry(pin, &hdmi->pin_list, head) { + for (j = 0; j < pin->num_ports; j++) { + int sink_index = i + hdmi->num_cvt; + int src_index = sink_index + pin->num_ports * + hdmi->num_pin; + + hdac_hdmi_fill_route(&route[i], + widgets[sink_index].name, NULL, + widgets[src_index].name, NULL); + i++; + } + } + + hdac_hdmi_add_pinmux_cvt_route(hdev, widgets, route, i); + + snd_soc_dapm_new_controls(dapm, widgets, + ((2 * hdmi->num_ports) + hdmi->num_cvt)); + + snd_soc_dapm_add_routes(dapm, route, num_routes); + snd_soc_dapm_new_widgets(dapm->card); + + return 0; + +} + +static int hdac_hdmi_init_dai_map(struct hdac_device *hdev) +{ + struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); + struct hdac_hdmi_dai_port_map *dai_map; + struct hdac_hdmi_cvt *cvt; + int dai_id = 0; + + if (list_empty(&hdmi->cvt_list)) + return -EINVAL; + + list_for_each_entry(cvt, &hdmi->cvt_list, head) { + dai_map = &hdmi->dai_map[dai_id]; + dai_map->dai_id = dai_id; + dai_map->cvt = cvt; + + dai_id++; + + if (dai_id == HDA_MAX_CVTS) { + dev_warn(&hdev->dev, + "Max dais supported: %d\n", dai_id); + break; + } + } + + return 0; +} + +static int hdac_hdmi_add_cvt(struct hdac_device *hdev, hda_nid_t nid) +{ + struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); + struct hdac_hdmi_cvt *cvt; + char name[NAME_SIZE]; + + cvt = kzalloc(sizeof(*cvt), GFP_KERNEL); + if (!cvt) + return -ENOMEM; + + cvt->nid = nid; + sprintf(name, "cvt %d", cvt->nid); + cvt->name = kstrdup(name, GFP_KERNEL); + + list_add_tail(&cvt->head, &hdmi->cvt_list); + hdmi->num_cvt++; + + return hdac_hdmi_query_cvt_params(hdev, cvt); +} + +static int hdac_hdmi_parse_eld(struct hdac_device *hdev, + struct hdac_hdmi_port *port) +{ + unsigned int ver, mnl; + + ver = (port->eld.eld_buffer[DRM_ELD_VER] & DRM_ELD_VER_MASK) + >> DRM_ELD_VER_SHIFT; + + if (ver != ELD_VER_CEA_861D && ver != ELD_VER_PARTIAL) { + dev_err(&hdev->dev, "HDMI: Unknown ELD version %d\n", ver); + return -EINVAL; + } + + mnl = (port->eld.eld_buffer[DRM_ELD_CEA_EDID_VER_MNL] & + DRM_ELD_MNL_MASK) >> DRM_ELD_MNL_SHIFT; + + if (mnl > ELD_MAX_MNL) { + dev_err(&hdev->dev, "HDMI: MNL Invalid %d\n", mnl); + return -EINVAL; + } + + port->eld.info.spk_alloc = port->eld.eld_buffer[DRM_ELD_SPEAKER]; + + return 0; +} + +static void hdac_hdmi_present_sense(struct hdac_hdmi_pin *pin, + struct hdac_hdmi_port *port) +{ + struct hdac_device *hdev = pin->hdev; + struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); + struct hdac_hdmi_pcm *pcm; + int size = 0; + int port_id = -1; + + if (!hdmi) + return; + + /* + * In case of non MST pin, get_eld info API expectes port + * to be -1. + */ + mutex_lock(&hdmi->pin_mutex); + port->eld.monitor_present = false; + + if (pin->mst_capable) + port_id = port->id; + + size = snd_hdac_acomp_get_eld(hdev, pin->nid, port_id, + &port->eld.monitor_present, + port->eld.eld_buffer, + ELD_MAX_SIZE); + + if (size > 0) { + size = min(size, ELD_MAX_SIZE); + if (hdac_hdmi_parse_eld(hdev, port) < 0) + size = -EINVAL; + } + + if (size > 0) { + port->eld.eld_valid = true; + port->eld.eld_size = size; + } else { + port->eld.eld_valid = false; + port->eld.eld_size = 0; + } + + pcm = hdac_hdmi_get_pcm(hdev, port); + + if (!port->eld.monitor_present || !port->eld.eld_valid) { + + dev_err(&hdev->dev, "%s: disconnect for pin:port %d:%d\n", + __func__, pin->nid, port->id); + + /* + * PCMs are not registered during device probe, so don't + * report jack here. It will be done in usermode mux + * control select. + */ + if (pcm) + hdac_hdmi_jack_report(pcm, port, false); + + mutex_unlock(&hdmi->pin_mutex); + return; + } + + if (port->eld.monitor_present && port->eld.eld_valid) { + if (pcm) + hdac_hdmi_jack_report(pcm, port, true); + + print_hex_dump_debug("ELD: ", DUMP_PREFIX_OFFSET, 16, 1, + port->eld.eld_buffer, port->eld.eld_size, false); + + } + mutex_unlock(&hdmi->pin_mutex); +} + +static int hdac_hdmi_add_ports(struct hdac_hdmi_priv *hdmi, + struct hdac_hdmi_pin *pin) +{ + struct hdac_hdmi_port *ports; + int max_ports = HDA_MAX_PORTS; + int i; + + /* + * FIXME: max_port may vary for each platform, so pass this as + * as driver data or query from i915 interface when this API is + * implemented. + */ + + ports = kcalloc(max_ports, sizeof(*ports), GFP_KERNEL); + if (!ports) + return -ENOMEM; + + for (i = 0; i < max_ports; i++) { + ports[i].id = i; + ports[i].pin = pin; + } + pin->ports = ports; + pin->num_ports = max_ports; + return 0; +} + +static int hdac_hdmi_add_pin(struct hdac_device *hdev, hda_nid_t nid) +{ + struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); + struct hdac_hdmi_pin *pin; + int ret; + + pin = kzalloc(sizeof(*pin), GFP_KERNEL); + if (!pin) + return -ENOMEM; + + pin->nid = nid; + pin->mst_capable = false; + pin->hdev = hdev; + ret = hdac_hdmi_add_ports(hdmi, pin); + if (ret < 0) + return ret; + + list_add_tail(&pin->head, &hdmi->pin_list); + hdmi->num_pin++; + hdmi->num_ports += pin->num_ports; + + return 0; +} + +#define INTEL_VENDOR_NID 0x08 +#define INTEL_GLK_VENDOR_NID 0x0b +#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 *hdev) +{ + unsigned int vendor_param; + struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); + unsigned int vendor_nid = hdmi->drv_data->vendor_nid; + + vendor_param = snd_hdac_codec_read(hdev, 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(hdev, vendor_nid, 0, + INTEL_SET_VENDOR_VERB, vendor_param); + if (vendor_param == -1) + return; +} + +static void hdac_hdmi_skl_enable_dp12(struct hdac_device *hdev) +{ + unsigned int vendor_param; + struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); + unsigned int vendor_nid = hdmi->drv_data->vendor_nid; + + vendor_param = snd_hdac_codec_read(hdev, 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(hdev, vendor_nid, 0, + INTEL_SET_VENDOR_VERB, vendor_param); + if (vendor_param == -1) + return; + +} + +static const 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, + .set_tdm_slot = hdac_hdmi_set_tdm_slot, +}; + +/* + * Each converter can support a stream independently. So a dai is created + * based on the number of converter queried. + */ +static int hdac_hdmi_create_dais(struct hdac_device *hdev, + struct snd_soc_dai_driver **dais, + struct hdac_hdmi_priv *hdmi, int num_dais) +{ + struct snd_soc_dai_driver *hdmi_dais; + struct hdac_hdmi_cvt *cvt; + char name[NAME_SIZE], dai_name[NAME_SIZE]; + int i = 0; + u32 rates, bps; + unsigned int rate_max = 384000, rate_min = 8000; + u64 formats; + int ret; + + hdmi_dais = devm_kzalloc(&hdev->dev, + (sizeof(*hdmi_dais) * num_dais), + GFP_KERNEL); + if (!hdmi_dais) + return -ENOMEM; + + list_for_each_entry(cvt, &hdmi->cvt_list, head) { + ret = snd_hdac_query_supported_pcm(hdev, cvt->nid, + &rates, &formats, &bps); + if (ret) + return ret; + + /* Filter out 44.1, 88.2 and 176.4Khz */ + rates &= ~(SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_88200 | + SNDRV_PCM_RATE_176400); + if (!rates) + return -EINVAL; + + sprintf(dai_name, "intel-hdmi-hifi%d", i+1); + hdmi_dais[i].name = devm_kstrdup(&hdev->dev, + dai_name, GFP_KERNEL); + + if (!hdmi_dais[i].name) + return -ENOMEM; + + snprintf(name, sizeof(name), "hifi%d", i+1); + hdmi_dais[i].playback.stream_name = + devm_kstrdup(&hdev->dev, name, GFP_KERNEL); + if (!hdmi_dais[i].playback.stream_name) + return -ENOMEM; + + /* + * Set caps based on capability queried from the converter. + * It will be constrained runtime based on ELD queried. + */ + hdmi_dais[i].playback.formats = formats; + hdmi_dais[i].playback.rates = rates; + hdmi_dais[i].playback.rate_max = rate_max; + hdmi_dais[i].playback.rate_min = rate_min; + hdmi_dais[i].playback.channels_min = 2; + hdmi_dais[i].playback.channels_max = 2; + hdmi_dais[i].playback.sig_bits = bps; + hdmi_dais[i].ops = &hdmi_dai_ops; + i++; + } + + *dais = hdmi_dais; + hdmi->dai_drv = hdmi_dais; + + 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_device *hdev, + struct snd_soc_dai_driver **dais, int *num_dais) +{ + hda_nid_t nid; + int i, num_nodes; + struct hdac_hdmi_cvt *temp_cvt, *cvt_next; + struct hdac_hdmi_pin *temp_pin, *pin_next; + struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); + int ret; + + hdac_hdmi_skl_enable_all_pins(hdev); + hdac_hdmi_skl_enable_dp12(hdev); + + num_nodes = snd_hdac_get_sub_nodes(hdev, hdev->afg, &nid); + if (!nid || num_nodes <= 0) { + dev_warn(&hdev->dev, "HDMI: failed to get afg sub nodes\n"); + return -EINVAL; + } + + for (i = 0; i < num_nodes; i++, nid++) { + unsigned int caps; + unsigned int type; + + caps = get_wcaps(hdev, nid); + type = get_wcaps_type(caps); + + if (!(caps & AC_WCAP_DIGITAL)) + continue; + + switch (type) { + + case AC_WID_AUD_OUT: + ret = hdac_hdmi_add_cvt(hdev, nid); + if (ret < 0) + goto free_widgets; + break; + + case AC_WID_PIN: + ret = hdac_hdmi_add_pin(hdev, nid); + if (ret < 0) + goto free_widgets; + break; + } + } + + if (!hdmi->num_pin || !hdmi->num_cvt) { + ret = -EIO; + goto free_widgets; + } + + ret = hdac_hdmi_create_dais(hdev, dais, hdmi, hdmi->num_cvt); + if (ret) { + dev_err(&hdev->dev, "Failed to create dais with err: %d\n", + ret); + goto free_widgets; + } + + *num_dais = hdmi->num_cvt; + ret = hdac_hdmi_init_dai_map(hdev); + if (ret < 0) + goto free_widgets; + + return ret; + +free_widgets: + list_for_each_entry_safe(temp_cvt, cvt_next, &hdmi->cvt_list, head) { + list_del(&temp_cvt->head); + kfree(temp_cvt->name); + kfree(temp_cvt); + } + + list_for_each_entry_safe(temp_pin, pin_next, &hdmi->pin_list, head) { + for (i = 0; i < temp_pin->num_ports; i++) + temp_pin->ports[i].pin = NULL; + kfree(temp_pin->ports); + list_del(&temp_pin->head); + kfree(temp_pin); + } + + return ret; +} + +static int hdac_hdmi_pin2port(void *aptr, int pin) +{ + return pin - 4; /* map NID 0x05 -> port #1 */ +} + +static void hdac_hdmi_eld_notify_cb(void *aptr, int port, int pipe) +{ + struct hdac_device *hdev = aptr; + struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); + struct hdac_hdmi_pin *pin = NULL; + struct hdac_hdmi_port *hport = NULL; + struct snd_soc_component *component = hdmi->component; + int i; + + /* Don't know how this mapping is derived */ + hda_nid_t pin_nid = port + 0x04; + + dev_dbg(&hdev->dev, "%s: for pin:%d port=%d\n", __func__, + pin_nid, pipe); + + /* + * 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(component->card->snd_card) != + SNDRV_CTL_POWER_D0) + return; + + if (atomic_read(&hdev->in_pm)) + return; + + list_for_each_entry(pin, &hdmi->pin_list, head) { + if (pin->nid != pin_nid) + continue; + + /* In case of non MST pin, pipe is -1 */ + if (pipe == -1) { + pin->mst_capable = false; + /* if not MST, default is port[0] */ + hport = &pin->ports[0]; + } else { + for (i = 0; i < pin->num_ports; i++) { + pin->mst_capable = true; + if (pin->ports[i].id == pipe) { + hport = &pin->ports[i]; + break; + } + } + } + + if (hport) + hdac_hdmi_present_sense(pin, hport); + } + +} + +static struct drm_audio_component_audio_ops aops = { + .pin2port = hdac_hdmi_pin2port, + .pin_eld_notify = hdac_hdmi_eld_notify_cb, +}; + +static struct snd_pcm *hdac_hdmi_get_pcm_from_id(struct snd_soc_card *card, + int device) +{ + struct snd_soc_pcm_runtime *rtd; + + list_for_each_entry(rtd, &card->rtd_list, list) { + if (rtd->pcm && (rtd->pcm->device == device)) + return rtd->pcm; + } + + return NULL; +} + +/* create jack pin kcontrols */ +static int create_fill_jack_kcontrols(struct snd_soc_card *card, + struct hdac_device *hdev) +{ + struct hdac_hdmi_pin *pin; + struct snd_kcontrol_new *kc; + char kc_name[NAME_SIZE], xname[NAME_SIZE]; + char *name; + int i = 0, j; + struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); + struct snd_soc_component *component = hdmi->component; + + kc = devm_kcalloc(component->dev, hdmi->num_ports, + sizeof(*kc), GFP_KERNEL); + + if (!kc) + return -ENOMEM; + + list_for_each_entry(pin, &hdmi->pin_list, head) { + for (j = 0; j < pin->num_ports; j++) { + snprintf(xname, sizeof(xname), "hif%d-%d Jack", + pin->nid, pin->ports[j].id); + name = devm_kstrdup(component->dev, xname, GFP_KERNEL); + if (!name) + return -ENOMEM; + snprintf(kc_name, sizeof(kc_name), "%s Switch", xname); + kc[i].name = devm_kstrdup(component->dev, kc_name, + GFP_KERNEL); + if (!kc[i].name) + return -ENOMEM; + + kc[i].private_value = (unsigned long)name; + kc[i].iface = SNDRV_CTL_ELEM_IFACE_MIXER; + kc[i].access = 0; + kc[i].info = snd_soc_dapm_info_pin_switch; + kc[i].put = snd_soc_dapm_put_pin_switch; + kc[i].get = snd_soc_dapm_get_pin_switch; + i++; + } + } + + return snd_soc_add_card_controls(card, kc, i); +} + +int hdac_hdmi_jack_port_init(struct snd_soc_component *component, + struct snd_soc_dapm_context *dapm) +{ + struct hdac_hdmi_priv *hdmi = snd_soc_component_get_drvdata(component); + struct hdac_device *hdev = hdmi->hdev; + struct hdac_hdmi_pin *pin; + struct snd_soc_dapm_widget *widgets; + struct snd_soc_dapm_route *route; + char w_name[NAME_SIZE]; + int i = 0, j, ret; + + widgets = devm_kcalloc(dapm->dev, hdmi->num_ports, + sizeof(*widgets), GFP_KERNEL); + + if (!widgets) + return -ENOMEM; + + route = devm_kcalloc(dapm->dev, hdmi->num_ports, + sizeof(*route), GFP_KERNEL); + if (!route) + return -ENOMEM; + + /* create Jack DAPM widget */ + list_for_each_entry(pin, &hdmi->pin_list, head) { + for (j = 0; j < pin->num_ports; j++) { + snprintf(w_name, sizeof(w_name), "hif%d-%d Jack", + pin->nid, pin->ports[j].id); + + ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i], + snd_soc_dapm_spk, NULL, + w_name, NULL, NULL, 0, NULL, 0); + if (ret < 0) + return ret; + + pin->ports[j].jack_pin = widgets[i].name; + pin->ports[j].dapm = dapm; + + /* add to route from Jack widget to output */ + hdac_hdmi_fill_route(&route[i], pin->ports[j].jack_pin, + NULL, pin->ports[j].output_pin, NULL); + + i++; + } + } + + /* Add Route from Jack widget to the output widget */ + ret = snd_soc_dapm_new_controls(dapm, widgets, hdmi->num_ports); + if (ret < 0) + return ret; + + ret = snd_soc_dapm_add_routes(dapm, route, hdmi->num_ports); + if (ret < 0) + return ret; + + ret = snd_soc_dapm_new_widgets(dapm->card); + if (ret < 0) + return ret; + + /* Add Jack Pin switch Kcontrol */ + ret = create_fill_jack_kcontrols(dapm->card, hdev); + + if (ret < 0) + return ret; + + /* default set the Jack Pin switch to OFF */ + list_for_each_entry(pin, &hdmi->pin_list, head) { + for (j = 0; j < pin->num_ports; j++) + snd_soc_dapm_disable_pin(pin->ports[j].dapm, + pin->ports[j].jack_pin); + } + + return 0; +} +EXPORT_SYMBOL_GPL(hdac_hdmi_jack_port_init); + +int hdac_hdmi_jack_init(struct snd_soc_dai *dai, int device, + struct snd_soc_jack *jack) +{ + struct snd_soc_component *component = dai->component; + struct hdac_hdmi_priv *hdmi = snd_soc_component_get_drvdata(component); + struct hdac_device *hdev = hdmi->hdev; + struct hdac_hdmi_pcm *pcm; + struct snd_pcm *snd_pcm; + int err; + + /* + * this is a new PCM device, create new pcm and + * add to the pcm list + */ + pcm = kzalloc(sizeof(*pcm), GFP_KERNEL); + if (!pcm) + return -ENOMEM; + pcm->pcm_id = device; + pcm->cvt = hdmi->dai_map[dai->id].cvt; + pcm->jack_event = 0; + pcm->jack = jack; + mutex_init(&pcm->lock); + INIT_LIST_HEAD(&pcm->port_list); + snd_pcm = hdac_hdmi_get_pcm_from_id(dai->component->card, device); + if (snd_pcm) { + err = snd_hdac_add_chmap_ctls(snd_pcm, device, &hdmi->chmap); + if (err < 0) { + dev_err(&hdev->dev, + "chmap control add failed with err: %d for pcm: %d\n", + err, device); + kfree(pcm); + return err; + } + } + + list_add_tail(&pcm->head, &hdmi->pcm_list); + + return 0; +} +EXPORT_SYMBOL_GPL(hdac_hdmi_jack_init); + +static void hdac_hdmi_present_sense_all_pins(struct hdac_device *hdev, + struct hdac_hdmi_priv *hdmi, bool detect_pin_caps) +{ + int i; + struct hdac_hdmi_pin *pin; + + list_for_each_entry(pin, &hdmi->pin_list, head) { + if (detect_pin_caps) { + + if (hdac_hdmi_get_port_len(hdev, pin->nid) == 0) + pin->mst_capable = false; + else + pin->mst_capable = true; + } + + for (i = 0; i < pin->num_ports; i++) { + if (!pin->mst_capable && i > 0) + continue; + + hdac_hdmi_present_sense(pin, &pin->ports[i]); + } + } +} + +static int hdmi_codec_probe(struct snd_soc_component *component) +{ + struct hdac_hdmi_priv *hdmi = snd_soc_component_get_drvdata(component); + struct hdac_device *hdev = hdmi->hdev; + struct snd_soc_dapm_context *dapm = + snd_soc_component_get_dapm(component); + struct hdac_ext_link *hlink = NULL; + int ret; + + hdmi->component = component; + + /* + * hold the ref while we probe, also no need to drop the ref on + * exit, we call pm_runtime_suspend() so that will do for us + */ + hlink = snd_hdac_ext_bus_get_link(hdev->bus, dev_name(&hdev->dev)); + if (!hlink) { + dev_err(&hdev->dev, "hdac link not found\n"); + return -EIO; + } + + snd_hdac_ext_bus_link_get(hdev->bus, hlink); + + ret = create_fill_widget_route_map(dapm); + if (ret < 0) + return ret; + + aops.audio_ptr = hdev; + ret = snd_hdac_acomp_register_notifier(hdev->bus, &aops); + if (ret < 0) { + dev_err(&hdev->dev, "notifier register failed: err: %d\n", ret); + return ret; + } + + hdac_hdmi_present_sense_all_pins(hdev, hdmi, true); + /* Imp: Store the card pointer in hda_codec */ + hdmi->card = dapm->card->snd_card; + + /* + * Setup a device_link between card device and HDMI codec device. + * The card device is the consumer and the HDMI codec device is + * the supplier. With this setting, we can make sure that the audio + * domain in display power will be always turned on before operating + * on the HDMI audio codec registers. + * Let's use the flag DL_FLAG_AUTOREMOVE_CONSUMER. This can make + * sure the device link is freed when the machine driver is removed. + */ + device_link_add(component->card->dev, &hdev->dev, DL_FLAG_RPM_ACTIVE | + DL_FLAG_AUTOREMOVE_CONSUMER); + /* + * 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(&hdev->dev); + pm_runtime_put(&hdev->dev); + pm_runtime_suspend(&hdev->dev); + + return 0; +} + +static void hdmi_codec_remove(struct snd_soc_component *component) +{ + struct hdac_hdmi_priv *hdmi = snd_soc_component_get_drvdata(component); + struct hdac_device *hdev = hdmi->hdev; + int ret; + + ret = snd_hdac_acomp_register_notifier(hdev->bus, NULL); + if (ret < 0) + dev_err(&hdev->dev, "notifier unregister failed: err: %d\n", + ret); + + pm_runtime_disable(&hdev->dev); +} + +#ifdef CONFIG_PM +static int hdmi_codec_prepare(struct device *dev) +{ + struct hdac_device *hdev = dev_to_hdac_dev(dev); + + pm_runtime_get_sync(&hdev->dev); + + /* + * Power down afg. + * codec_read is preferred over codec_write to set the power state. + * This way verb is send to set the power state and response + * is received. So setting power state is ensured without using loop + * to read the state. + */ + snd_hdac_codec_read(hdev, hdev->afg, 0, AC_VERB_SET_POWER_STATE, + AC_PWRST_D3); + + return 0; +} + +static void hdmi_codec_complete(struct device *dev) +{ + struct hdac_device *hdev = dev_to_hdac_dev(dev); + struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); + + /* Power up afg */ + snd_hdac_codec_read(hdev, hdev->afg, 0, AC_VERB_SET_POWER_STATE, + AC_PWRST_D0); + + hdac_hdmi_skl_enable_all_pins(hdev); + hdac_hdmi_skl_enable_dp12(hdev); + + /* + * As the ELD notify callback request is not entertained while the + * device is in suspend state. Need to manually check detection of + * all pins here. pin capablity change is not support, so use the + * already set pin caps. + */ + hdac_hdmi_present_sense_all_pins(hdev, hdmi, false); + + pm_runtime_put_sync(&hdev->dev); +} +#else +#define hdmi_codec_prepare NULL +#define hdmi_codec_complete NULL +#endif + +static const struct snd_soc_component_driver hdmi_hda_codec = { + .probe = hdmi_codec_probe, + .remove = hdmi_codec_remove, + .use_pmdown_time = 1, + .endianness = 1, + .non_legacy_dai_naming = 1, +}; + +static void hdac_hdmi_get_chmap(struct hdac_device *hdev, int pcm_idx, + unsigned char *chmap) +{ + struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); + struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx); + + memcpy(chmap, pcm->chmap, ARRAY_SIZE(pcm->chmap)); +} + +static void hdac_hdmi_set_chmap(struct hdac_device *hdev, int pcm_idx, + unsigned char *chmap, int prepared) +{ + struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); + struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx); + struct hdac_hdmi_port *port; + + if (!pcm) + return; + + if (list_empty(&pcm->port_list)) + return; + + mutex_lock(&pcm->lock); + pcm->chmap_set = true; + memcpy(pcm->chmap, chmap, ARRAY_SIZE(pcm->chmap)); + list_for_each_entry(port, &pcm->port_list, head) + if (prepared) + hdac_hdmi_setup_audio_infoframe(hdev, pcm, port); + mutex_unlock(&pcm->lock); +} + +static bool is_hdac_hdmi_pcm_attached(struct hdac_device *hdev, int pcm_idx) +{ + struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); + struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx); + + if (!pcm) + return false; + + if (list_empty(&pcm->port_list)) + return false; + + return true; +} + +static int hdac_hdmi_get_spk_alloc(struct hdac_device *hdev, int pcm_idx) +{ + struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); + struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx); + struct hdac_hdmi_port *port; + + if (!pcm) + return 0; + + if (list_empty(&pcm->port_list)) + return 0; + + port = list_first_entry(&pcm->port_list, struct hdac_hdmi_port, head); + + if (!port) + return 0; + + if (!port || !port->eld.eld_valid) + return 0; + + return port->eld.info.spk_alloc; +} + +static struct hdac_hdmi_drv_data intel_glk_drv_data = { + .vendor_nid = INTEL_GLK_VENDOR_NID, +}; + +static struct hdac_hdmi_drv_data intel_drv_data = { + .vendor_nid = INTEL_VENDOR_NID, +}; + +static int hdac_hdmi_dev_probe(struct hdac_device *hdev) +{ + struct hdac_hdmi_priv *hdmi_priv = NULL; + struct snd_soc_dai_driver *hdmi_dais = NULL; + struct hdac_ext_link *hlink = NULL; + int num_dais = 0; + int ret = 0; + struct hdac_driver *hdrv = drv_to_hdac_driver(hdev->dev.driver); + const struct hda_device_id *hdac_id = hdac_get_device_id(hdev, hdrv); + + /* hold the ref while we probe */ + hlink = snd_hdac_ext_bus_get_link(hdev->bus, dev_name(&hdev->dev)); + if (!hlink) { + dev_err(&hdev->dev, "hdac link not found\n"); + return -EIO; + } + + snd_hdac_ext_bus_link_get(hdev->bus, hlink); + + hdmi_priv = devm_kzalloc(&hdev->dev, sizeof(*hdmi_priv), GFP_KERNEL); + if (hdmi_priv == NULL) + return -ENOMEM; + + snd_hdac_register_chmap_ops(hdev, &hdmi_priv->chmap); + hdmi_priv->chmap.ops.get_chmap = hdac_hdmi_get_chmap; + hdmi_priv->chmap.ops.set_chmap = hdac_hdmi_set_chmap; + hdmi_priv->chmap.ops.is_pcm_attached = is_hdac_hdmi_pcm_attached; + hdmi_priv->chmap.ops.get_spk_alloc = hdac_hdmi_get_spk_alloc; + hdmi_priv->hdev = hdev; + + if (!hdac_id) + return -ENODEV; + + if (hdac_id->driver_data) + hdmi_priv->drv_data = + (struct hdac_hdmi_drv_data *)hdac_id->driver_data; + else + hdmi_priv->drv_data = &intel_drv_data; + + dev_set_drvdata(&hdev->dev, hdmi_priv); + + INIT_LIST_HEAD(&hdmi_priv->pin_list); + INIT_LIST_HEAD(&hdmi_priv->cvt_list); + INIT_LIST_HEAD(&hdmi_priv->pcm_list); + mutex_init(&hdmi_priv->pin_mutex); + + /* + * Turned off in the runtime_suspend during the first explicit + * pm_runtime_suspend call. + */ + ret = snd_hdac_display_power(hdev->bus, true); + if (ret < 0) { + dev_err(&hdev->dev, + "Cannot turn on display power on i915 err: %d\n", + ret); + return ret; + } + + ret = hdac_hdmi_parse_and_map_nid(hdev, &hdmi_dais, &num_dais); + if (ret < 0) { + dev_err(&hdev->dev, + "Failed in parse and map nid with err: %d\n", ret); + return ret; + } + snd_hdac_refresh_widgets(hdev, true); + + /* ASoC specific initialization */ + ret = devm_snd_soc_register_component(&hdev->dev, &hdmi_hda_codec, + hdmi_dais, num_dais); + + snd_hdac_ext_bus_link_put(hdev->bus, hlink); + + return ret; +} + +static int hdac_hdmi_dev_remove(struct hdac_device *hdev) +{ + struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); + struct hdac_hdmi_pin *pin, *pin_next; + struct hdac_hdmi_cvt *cvt, *cvt_next; + struct hdac_hdmi_pcm *pcm, *pcm_next; + struct hdac_hdmi_port *port, *port_next; + int i; + + list_for_each_entry_safe(pcm, pcm_next, &hdmi->pcm_list, head) { + pcm->cvt = NULL; + if (list_empty(&pcm->port_list)) + continue; + + list_for_each_entry_safe(port, port_next, + &pcm->port_list, head) + list_del(&port->head); + + list_del(&pcm->head); + kfree(pcm); + } + + list_for_each_entry_safe(cvt, cvt_next, &hdmi->cvt_list, head) { + list_del(&cvt->head); + kfree(cvt->name); + kfree(cvt); + } + + list_for_each_entry_safe(pin, pin_next, &hdmi->pin_list, head) { + for (i = 0; i < pin->num_ports; i++) + pin->ports[i].pin = NULL; + kfree(pin->ports); + list_del(&pin->head); + kfree(pin); + } + + return 0; +} + +#ifdef CONFIG_PM +/* + * Power management sequences + * ========================== + * + * The following explains the PM handling of HDAC HDMI with its parent + * device SKL and display power usage + * + * Probe + * ----- + * In SKL probe, + * 1. skl_probe_work() powers up the display (refcount++ -> 1) + * 2. enumerates the codecs on the link + * 3. powers down the display (refcount-- -> 0) + * + * In HDAC HDMI probe, + * 1. hdac_hdmi_dev_probe() powers up the display (refcount++ -> 1) + * 2. probe the codec + * 3. put the HDAC HDMI device to runtime suspend + * 4. hdac_hdmi_runtime_suspend() powers down the display (refcount-- -> 0) + * + * Once children are runtime suspended, SKL device also goes to runtime + * suspend + * + * HDMI Playback + * ------------- + * Open HDMI device, + * 1. skl_runtime_resume() invoked + * 2. hdac_hdmi_runtime_resume() powers up the display (refcount++ -> 1) + * + * Close HDMI device, + * 1. hdac_hdmi_runtime_suspend() powers down the display (refcount-- -> 0) + * 2. skl_runtime_suspend() invoked + * + * S0/S3 Cycle with playback in progress + * ------------------------------------- + * When the device is opened for playback, the device is runtime active + * already and the display refcount is 1 as explained above. + * + * Entering to S3, + * 1. hdmi_codec_prepare() invoke the runtime resume of codec which just + * increments the PM runtime usage count of the codec since the device + * is in use already + * 2. skl_suspend() powers down the display (refcount-- -> 0) + * + * Wakeup from S3, + * 1. skl_resume() powers up the display (refcount++ -> 1) + * 2. hdmi_codec_complete() invokes the runtime suspend of codec which just + * decrements the PM runtime usage count of the codec since the device + * is in use already + * + * Once playback is stopped, the display refcount is set to 0 as explained + * above in the HDMI playback sequence. The PM handlings are designed in + * such way that to balance the refcount of display power when the codec + * device put to S3 while playback is going on. + * + * S0/S3 Cycle without playback in progress + * ---------------------------------------- + * Entering to S3, + * 1. hdmi_codec_prepare() invoke the runtime resume of codec + * 2. skl_runtime_resume() invoked + * 3. hdac_hdmi_runtime_resume() powers up the display (refcount++ -> 1) + * 4. skl_suspend() powers down the display (refcount-- -> 0) + * + * Wakeup from S3, + * 1. skl_resume() powers up the display (refcount++ -> 1) + * 2. hdmi_codec_complete() invokes the runtime suspend of codec + * 3. hdac_hdmi_runtime_suspend() powers down the display (refcount-- -> 0) + * 4. skl_runtime_suspend() invoked + */ +static int hdac_hdmi_runtime_suspend(struct device *dev) +{ + struct hdac_device *hdev = dev_to_hdac_dev(dev); + struct hdac_bus *bus = hdev->bus; + struct hdac_ext_link *hlink = NULL; + 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. + * codec_read is preferred over codec_write to set the power state. + * This way verb is send to set the power state and response + * is received. So setting power state is ensured without using loop + * to read the state. + */ + snd_hdac_codec_read(hdev, hdev->afg, 0, AC_VERB_SET_POWER_STATE, + AC_PWRST_D3); + + hlink = snd_hdac_ext_bus_get_link(bus, dev_name(dev)); + if (!hlink) { + dev_err(dev, "hdac link not found\n"); + return -EIO; + } + + snd_hdac_ext_bus_link_put(bus, hlink); + + err = snd_hdac_display_power(bus, false); + if (err < 0) + dev_err(dev, "Cannot turn off display power on i915\n"); + + return err; +} + +static int hdac_hdmi_runtime_resume(struct device *dev) +{ + struct hdac_device *hdev = dev_to_hdac_dev(dev); + struct hdac_bus *bus = hdev->bus; + struct hdac_ext_link *hlink = NULL; + int err; + + dev_dbg(dev, "Enter: %s\n", __func__); + + /* controller may not have been initialized for the first time */ + if (!bus) + return 0; + + hlink = snd_hdac_ext_bus_get_link(bus, dev_name(dev)); + if (!hlink) { + dev_err(dev, "hdac link not found\n"); + return -EIO; + } + + snd_hdac_ext_bus_link_get(bus, hlink); + + err = snd_hdac_display_power(bus, true); + if (err < 0) { + dev_err(dev, "Cannot turn on display power on i915\n"); + return err; + } + + hdac_hdmi_skl_enable_all_pins(hdev); + hdac_hdmi_skl_enable_dp12(hdev); + + /* Power up afg */ + snd_hdac_codec_read(hdev, hdev->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) + .prepare = hdmi_codec_prepare, + .complete = hdmi_codec_complete, +}; + +static const struct hda_device_id hdmi_list[] = { + HDA_CODEC_EXT_ENTRY(0x80862809, 0x100000, "Skylake HDMI", 0), + HDA_CODEC_EXT_ENTRY(0x8086280a, 0x100000, "Broxton HDMI", 0), + HDA_CODEC_EXT_ENTRY(0x8086280b, 0x100000, "Kabylake HDMI", 0), + HDA_CODEC_EXT_ENTRY(0x8086280c, 0x100000, "Cannonlake HDMI", + &intel_glk_drv_data), + HDA_CODEC_EXT_ENTRY(0x8086280d, 0x100000, "Geminilake HDMI", + &intel_glk_drv_data), + {} +}; + +MODULE_DEVICE_TABLE(hdaudio, hdmi_list); + +static struct hdac_driver hdmi_driver = { + .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<samreen.nilofer@intel.com>"); +MODULE_AUTHOR("Subhransu S. Prusty<subhransu.s.prusty@intel.com>"); |