linux/sound/soc/codecs/hdac_hdmi.c
Subhransu S. Prusty 5307246015 ASoC: hdac_hdmi: Fix to warn instead of err for no connected nids
It is possible that some pin widget may return with no converter
connected. So don't throw error if none are found to be connected.
Instead print a warning and continue.

Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-01-08 13:02:31 +00:00

662 lines
17 KiB
C

/*
* 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 <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/hdaudio_ext.h>
#include <sound/hda_i915.h>
#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 {
hda_nid_t nid;
struct hdac_hdmi_cvt_params params;
};
struct hdac_hdmi_pin {
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 {
hda_nid_t pin_nid[3];
hda_nid_t cvt_nid[3];
struct hdac_hdmi_dai_pin_map dai_map[3];
};
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 int hdac_hdmi_query_pin_connlist(struct hdac_ext_device *hdac,
struct hdac_hdmi_pin *pin)
{
if (!(get_wcaps(&hdac->hdac, pin->nid) & AC_WCAP_CONN_LIST)) {
dev_warn(&hdac->hdac.dev,
"HDMI: pin %d wcaps %#x does not support connection list\n",
pin->nid, get_wcaps(&hdac->hdac, pin->nid));
return -EINVAL;
}
pin->num_mux_nids = snd_hdac_get_connections(&hdac->hdac, pin->nid,
pin->mux_nids, HDA_MAX_CONNECTIONS);
if (pin->num_mux_nids == 0)
dev_warn(&hdac->hdac.dev, "No connections found for pin: %d\n",
pin->nid);
dev_dbg(&hdac->hdac.dev, "num_mux_nids %d for pin: %d\n",
pin->num_mux_nids, pin->nid);
return pin->num_mux_nids;
}
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_dai_pin_map *dai_map,
hda_nid_t pin_nid, hda_nid_t cvt_nid, int dai_id)
{
int ret;
dai_map->dai_id = dai_id;
dai_map->pin.nid = pin_nid;
ret = hdac_hdmi_query_pin_connlist(edev, &dai_map->pin);
if (ret < 0) {
dev_err(&edev->hdac.dev,
"Error querying connection list: %d\n", ret);
return ret;
}
dai_map->cvt.nid = cvt_nid;
/* 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 hdac_hdmi_query_cvt_params(&edev->hdac, &dai_map->cvt);
}
/*
* 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 cvt_nid = 0, pin_nid = 0;
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:
hdmi->cvt_nid[cvt_nid] = nid;
cvt_nid++;
break;
case AC_WID_PIN:
hdmi->pin_nid[pin_nid] = nid;
pin_nid++;
break;
}
}
hdac->end_nid = nid;
if (!pin_nid || !cvt_nid)
return -EIO;
/*
* 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
*/
return hdac_hdmi_init_dai_map(edev, &hdmi->dai_map[0], hdmi->pin_nid[0],
hdmi->cvt_nid[0], 0);
}
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);
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)
{
snd_soc_unregister_codec(&edev->hdac.dev);
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<samreen.nilofer@intel.com>");
MODULE_AUTHOR("Subhransu S. Prusty<subhransu.s.prusty@intel.com>");