mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 10:04:12 +08:00
3323a148fd
Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Link: https://lore.kernel.org/r/20200718112403.13709-1-grandmaster@al2klimov.de Signed-off-by: Mark Brown <broonie@kernel.org>
422 lines
11 KiB
C
422 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* omap-hdmi-audio.c -- OMAP4+ DSS HDMI audio support library
|
|
*
|
|
* Copyright (C) 2014 Texas Instruments Incorporated - https://www.ti.com
|
|
*
|
|
* Author: Jyri Sarha <jsarha@ti.com>
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/err.h>
|
|
#include <linux/string.h>
|
|
#include <linux/platform_device.h>
|
|
#include <sound/soc.h>
|
|
#include <sound/pcm_params.h>
|
|
#include <sound/dmaengine_pcm.h>
|
|
#include <uapi/sound/asound.h>
|
|
#include <sound/asoundef.h>
|
|
#include <sound/omap-hdmi-audio.h>
|
|
|
|
#include "sdma-pcm.h"
|
|
|
|
#define DRV_NAME "omap-hdmi-audio"
|
|
|
|
struct hdmi_audio_data {
|
|
struct snd_soc_card *card;
|
|
|
|
const struct omap_hdmi_audio_ops *ops;
|
|
struct device *dssdev;
|
|
struct snd_dmaengine_dai_dma_data dma_data;
|
|
struct omap_dss_audio dss_audio;
|
|
struct snd_aes_iec958 iec;
|
|
struct snd_cea_861_aud_if cea;
|
|
|
|
struct mutex current_stream_lock;
|
|
struct snd_pcm_substream *current_stream;
|
|
};
|
|
|
|
static
|
|
struct hdmi_audio_data *card_drvdata_substream(struct snd_pcm_substream *ss)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = ss->private_data;
|
|
|
|
return snd_soc_card_get_drvdata(rtd->card);
|
|
}
|
|
|
|
static void hdmi_dai_abort(struct device *dev)
|
|
{
|
|
struct hdmi_audio_data *ad = dev_get_drvdata(dev);
|
|
|
|
mutex_lock(&ad->current_stream_lock);
|
|
if (ad->current_stream && ad->current_stream->runtime &&
|
|
snd_pcm_running(ad->current_stream)) {
|
|
dev_err(dev, "HDMI display disabled, aborting playback\n");
|
|
snd_pcm_stream_lock_irq(ad->current_stream);
|
|
snd_pcm_stop(ad->current_stream, SNDRV_PCM_STATE_DISCONNECTED);
|
|
snd_pcm_stream_unlock_irq(ad->current_stream);
|
|
}
|
|
mutex_unlock(&ad->current_stream_lock);
|
|
}
|
|
|
|
static int hdmi_dai_startup(struct snd_pcm_substream *substream,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct hdmi_audio_data *ad = card_drvdata_substream(substream);
|
|
int ret;
|
|
/*
|
|
* Make sure that the period bytes are multiple of the DMA packet size.
|
|
* Largest packet size we use is 32 32-bit words = 128 bytes
|
|
*/
|
|
ret = snd_pcm_hw_constraint_step(substream->runtime, 0,
|
|
SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 128);
|
|
if (ret < 0) {
|
|
dev_err(dai->dev, "Could not apply period constraint: %d\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
ret = snd_pcm_hw_constraint_step(substream->runtime, 0,
|
|
SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 128);
|
|
if (ret < 0) {
|
|
dev_err(dai->dev, "Could not apply buffer constraint: %d\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
|
|
snd_soc_dai_set_dma_data(dai, substream, &ad->dma_data);
|
|
|
|
mutex_lock(&ad->current_stream_lock);
|
|
ad->current_stream = substream;
|
|
mutex_unlock(&ad->current_stream_lock);
|
|
|
|
ret = ad->ops->audio_startup(ad->dssdev, hdmi_dai_abort);
|
|
|
|
if (ret) {
|
|
mutex_lock(&ad->current_stream_lock);
|
|
ad->current_stream = NULL;
|
|
mutex_unlock(&ad->current_stream_lock);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int hdmi_dai_hw_params(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *params,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct hdmi_audio_data *ad = card_drvdata_substream(substream);
|
|
struct snd_aes_iec958 *iec = &ad->iec;
|
|
struct snd_cea_861_aud_if *cea = &ad->cea;
|
|
|
|
WARN_ON(ad->current_stream != substream);
|
|
|
|
switch (params_format(params)) {
|
|
case SNDRV_PCM_FORMAT_S16_LE:
|
|
ad->dma_data.maxburst = 16;
|
|
break;
|
|
case SNDRV_PCM_FORMAT_S24_LE:
|
|
ad->dma_data.maxburst = 32;
|
|
break;
|
|
default:
|
|
dev_err(dai->dev, "format not supported!\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ad->dss_audio.iec = iec;
|
|
ad->dss_audio.cea = cea;
|
|
/*
|
|
* fill the IEC-60958 channel status word
|
|
*/
|
|
/* initialize the word bytes */
|
|
memset(iec->status, 0, sizeof(iec->status));
|
|
|
|
/* specify IEC-60958-3 (commercial use) */
|
|
iec->status[0] &= ~IEC958_AES0_PROFESSIONAL;
|
|
|
|
/* specify that the audio is LPCM*/
|
|
iec->status[0] &= ~IEC958_AES0_NONAUDIO;
|
|
|
|
iec->status[0] |= IEC958_AES0_CON_NOT_COPYRIGHT;
|
|
|
|
iec->status[0] |= IEC958_AES0_CON_EMPHASIS_NONE;
|
|
|
|
iec->status[1] = IEC958_AES1_CON_GENERAL;
|
|
|
|
iec->status[2] |= IEC958_AES2_CON_SOURCE_UNSPEC;
|
|
|
|
iec->status[2] |= IEC958_AES2_CON_CHANNEL_UNSPEC;
|
|
|
|
switch (params_rate(params)) {
|
|
case 32000:
|
|
iec->status[3] |= IEC958_AES3_CON_FS_32000;
|
|
break;
|
|
case 44100:
|
|
iec->status[3] |= IEC958_AES3_CON_FS_44100;
|
|
break;
|
|
case 48000:
|
|
iec->status[3] |= IEC958_AES3_CON_FS_48000;
|
|
break;
|
|
case 88200:
|
|
iec->status[3] |= IEC958_AES3_CON_FS_88200;
|
|
break;
|
|
case 96000:
|
|
iec->status[3] |= IEC958_AES3_CON_FS_96000;
|
|
break;
|
|
case 176400:
|
|
iec->status[3] |= IEC958_AES3_CON_FS_176400;
|
|
break;
|
|
case 192000:
|
|
iec->status[3] |= IEC958_AES3_CON_FS_192000;
|
|
break;
|
|
default:
|
|
dev_err(dai->dev, "rate not supported!\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* specify the clock accuracy */
|
|
iec->status[3] |= IEC958_AES3_CON_CLOCK_1000PPM;
|
|
|
|
/*
|
|
* specify the word length. The same word length value can mean
|
|
* two different lengths. Hence, we need to specify the maximum
|
|
* word length as well.
|
|
*/
|
|
switch (params_format(params)) {
|
|
case SNDRV_PCM_FORMAT_S16_LE:
|
|
iec->status[4] |= IEC958_AES4_CON_WORDLEN_20_16;
|
|
iec->status[4] &= ~IEC958_AES4_CON_MAX_WORDLEN_24;
|
|
break;
|
|
case SNDRV_PCM_FORMAT_S24_LE:
|
|
iec->status[4] |= IEC958_AES4_CON_WORDLEN_24_20;
|
|
iec->status[4] |= IEC958_AES4_CON_MAX_WORDLEN_24;
|
|
break;
|
|
default:
|
|
dev_err(dai->dev, "format not supported!\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* Fill the CEA-861 audio infoframe (see spec for details)
|
|
*/
|
|
|
|
cea->db1_ct_cc = (params_channels(params) - 1)
|
|
& CEA861_AUDIO_INFOFRAME_DB1CC;
|
|
cea->db1_ct_cc |= CEA861_AUDIO_INFOFRAME_DB1CT_FROM_STREAM;
|
|
|
|
cea->db2_sf_ss = CEA861_AUDIO_INFOFRAME_DB2SF_FROM_STREAM;
|
|
cea->db2_sf_ss |= CEA861_AUDIO_INFOFRAME_DB2SS_FROM_STREAM;
|
|
|
|
cea->db3 = 0; /* not used, all zeros */
|
|
|
|
if (params_channels(params) == 2)
|
|
cea->db4_ca = 0x0;
|
|
else if (params_channels(params) == 6)
|
|
cea->db4_ca = 0xb;
|
|
else
|
|
cea->db4_ca = 0x13;
|
|
|
|
if (cea->db4_ca == 0x00)
|
|
cea->db5_dminh_lsv = CEA861_AUDIO_INFOFRAME_DB5_DM_INH_PERMITTED;
|
|
else
|
|
cea->db5_dminh_lsv = CEA861_AUDIO_INFOFRAME_DB5_DM_INH_PROHIBITED;
|
|
|
|
/* the expression is trivial but makes clear what we are doing */
|
|
cea->db5_dminh_lsv |= (0 & CEA861_AUDIO_INFOFRAME_DB5_LSV);
|
|
|
|
return ad->ops->audio_config(ad->dssdev, &ad->dss_audio);
|
|
}
|
|
|
|
static int hdmi_dai_trigger(struct snd_pcm_substream *substream, int cmd,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct hdmi_audio_data *ad = card_drvdata_substream(substream);
|
|
int err = 0;
|
|
|
|
WARN_ON(ad->current_stream != substream);
|
|
|
|
switch (cmd) {
|
|
case SNDRV_PCM_TRIGGER_START:
|
|
case SNDRV_PCM_TRIGGER_RESUME:
|
|
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
|
|
err = ad->ops->audio_start(ad->dssdev);
|
|
break;
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
|
case SNDRV_PCM_TRIGGER_SUSPEND:
|
|
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
|
|
ad->ops->audio_stop(ad->dssdev);
|
|
break;
|
|
default:
|
|
err = -EINVAL;
|
|
}
|
|
return err;
|
|
}
|
|
|
|
static void hdmi_dai_shutdown(struct snd_pcm_substream *substream,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct hdmi_audio_data *ad = card_drvdata_substream(substream);
|
|
|
|
WARN_ON(ad->current_stream != substream);
|
|
|
|
ad->ops->audio_shutdown(ad->dssdev);
|
|
|
|
mutex_lock(&ad->current_stream_lock);
|
|
ad->current_stream = NULL;
|
|
mutex_unlock(&ad->current_stream_lock);
|
|
}
|
|
|
|
static const struct snd_soc_dai_ops hdmi_dai_ops = {
|
|
.startup = hdmi_dai_startup,
|
|
.hw_params = hdmi_dai_hw_params,
|
|
.trigger = hdmi_dai_trigger,
|
|
.shutdown = hdmi_dai_shutdown,
|
|
};
|
|
|
|
static const struct snd_soc_component_driver omap_hdmi_component = {
|
|
.name = "omapdss_hdmi",
|
|
};
|
|
|
|
static struct snd_soc_dai_driver omap5_hdmi_dai = {
|
|
.name = "omap5-hdmi-dai",
|
|
.playback = {
|
|
.channels_min = 2,
|
|
.channels_max = 8,
|
|
.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,
|
|
},
|
|
.ops = &hdmi_dai_ops,
|
|
};
|
|
|
|
static struct snd_soc_dai_driver omap4_hdmi_dai = {
|
|
.name = "omap4-hdmi-dai",
|
|
.playback = {
|
|
.channels_min = 2,
|
|
.channels_max = 8,
|
|
.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_S24_LE,
|
|
},
|
|
.ops = &hdmi_dai_ops,
|
|
};
|
|
|
|
static int omap_hdmi_audio_probe(struct platform_device *pdev)
|
|
{
|
|
struct omap_hdmi_audio_pdata *ha = pdev->dev.platform_data;
|
|
struct device *dev = &pdev->dev;
|
|
struct hdmi_audio_data *ad;
|
|
struct snd_soc_dai_driver *dai_drv;
|
|
struct snd_soc_card *card;
|
|
struct snd_soc_dai_link_component *compnent;
|
|
int ret;
|
|
|
|
if (!ha) {
|
|
dev_err(dev, "No platform data\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ad = devm_kzalloc(dev, sizeof(*ad), GFP_KERNEL);
|
|
if (!ad)
|
|
return -ENOMEM;
|
|
ad->dssdev = ha->dev;
|
|
ad->ops = ha->ops;
|
|
ad->dma_data.addr = ha->audio_dma_addr;
|
|
ad->dma_data.filter_data = "audio_tx";
|
|
ad->dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
|
|
mutex_init(&ad->current_stream_lock);
|
|
|
|
switch (ha->version) {
|
|
case 4:
|
|
dai_drv = &omap4_hdmi_dai;
|
|
break;
|
|
case 5:
|
|
dai_drv = &omap5_hdmi_dai;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
ret = devm_snd_soc_register_component(ad->dssdev, &omap_hdmi_component,
|
|
dai_drv, 1);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = sdma_pcm_platform_register(ad->dssdev, "audio_tx", NULL);
|
|
if (ret)
|
|
return ret;
|
|
|
|
card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
|
|
if (!card)
|
|
return -ENOMEM;
|
|
|
|
card->name = devm_kasprintf(dev, GFP_KERNEL,
|
|
"HDMI %s", dev_name(ad->dssdev));
|
|
if (!card->name)
|
|
return -ENOMEM;
|
|
|
|
card->owner = THIS_MODULE;
|
|
card->dai_link =
|
|
devm_kzalloc(dev, sizeof(*(card->dai_link)), GFP_KERNEL);
|
|
if (!card->dai_link)
|
|
return -ENOMEM;
|
|
|
|
compnent = devm_kzalloc(dev, 3 * sizeof(*compnent), GFP_KERNEL);
|
|
if (!compnent)
|
|
return -ENOMEM;
|
|
card->dai_link->cpus = &compnent[0];
|
|
card->dai_link->num_cpus = 1;
|
|
card->dai_link->codecs = &compnent[1];
|
|
card->dai_link->num_codecs = 1;
|
|
card->dai_link->platforms = &compnent[2];
|
|
card->dai_link->num_platforms = 1;
|
|
|
|
card->dai_link->name = card->name;
|
|
card->dai_link->stream_name = card->name;
|
|
card->dai_link->cpus->dai_name = dev_name(ad->dssdev);
|
|
card->dai_link->platforms->name = dev_name(ad->dssdev);
|
|
card->dai_link->codecs->name = "snd-soc-dummy";
|
|
card->dai_link->codecs->dai_name = "snd-soc-dummy-dai";
|
|
card->num_links = 1;
|
|
card->dev = dev;
|
|
|
|
ret = snd_soc_register_card(card);
|
|
if (ret) {
|
|
dev_err(dev, "snd_soc_register_card failed (%d)\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ad->card = card;
|
|
snd_soc_card_set_drvdata(card, ad);
|
|
|
|
dev_set_drvdata(dev, ad);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int omap_hdmi_audio_remove(struct platform_device *pdev)
|
|
{
|
|
struct hdmi_audio_data *ad = platform_get_drvdata(pdev);
|
|
|
|
snd_soc_unregister_card(ad->card);
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver hdmi_audio_driver = {
|
|
.driver = {
|
|
.name = DRV_NAME,
|
|
},
|
|
.probe = omap_hdmi_audio_probe,
|
|
.remove = omap_hdmi_audio_remove,
|
|
};
|
|
|
|
module_platform_driver(hdmi_audio_driver);
|
|
|
|
MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>");
|
|
MODULE_DESCRIPTION("OMAP HDMI Audio Driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:" DRV_NAME);
|