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@@ -1,364 +0,0 @@
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-/*
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- * omap-hdmi.c
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- *
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- * OMAP ALSA SoC DAI driver for HDMI audio on OMAP4 processors.
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- * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com/
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- * Authors: Jorge Candelaria <jorge.candelaria@ti.com>
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- * Ricardo Neri <ricardo.neri@ti.com>
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public License
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- * version 2 as published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful, but
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- * WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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- * General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, write to the Free Software
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- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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- * 02110-1301 USA
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- *
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- */
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-
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-#include <linux/init.h>
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-#include <linux/module.h>
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-#include <linux/device.h>
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-#include <sound/core.h>
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-#include <sound/pcm.h>
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-#include <sound/pcm_params.h>
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-#include <sound/initval.h>
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-#include <sound/soc.h>
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-#include <sound/asound.h>
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-#include <sound/asoundef.h>
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-#include <sound/dmaengine_pcm.h>
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-#include <video/omapdss.h>
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-#include <sound/omap-pcm.h>
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-
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-#include "omap-hdmi.h"
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-
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-#define DRV_NAME "omap-hdmi-audio-dai"
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-
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-struct hdmi_priv {
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- struct snd_dmaengine_dai_dma_data dma_data;
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- unsigned int dma_req;
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- struct omap_dss_audio dss_audio;
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- struct snd_aes_iec958 iec;
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- struct snd_cea_861_aud_if cea;
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- struct omap_dss_device *dssdev;
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-};
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-
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-static int omap_hdmi_dai_startup(struct snd_pcm_substream *substream,
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- struct snd_soc_dai *dai)
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-{
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- struct hdmi_priv *priv = snd_soc_dai_get_drvdata(dai);
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- int err;
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- /*
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- * Make sure that the period bytes are multiple of the DMA packet size.
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- * Largest packet size we use is 32 32-bit words = 128 bytes
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- */
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- err = snd_pcm_hw_constraint_step(substream->runtime, 0,
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- SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 128);
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- if (err < 0) {
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- dev_err(dai->dev, "could not apply constraint\n");
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- return err;
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- }
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-
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- if (!priv->dssdev->driver->audio_supported(priv->dssdev)) {
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- dev_err(dai->dev, "audio not supported\n");
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- return -ENODEV;
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- }
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-
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- snd_soc_dai_set_dma_data(dai, substream, &priv->dma_data);
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-
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- return 0;
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-}
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-
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-static int omap_hdmi_dai_prepare(struct snd_pcm_substream *substream,
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- struct snd_soc_dai *dai)
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-{
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- struct hdmi_priv *priv = snd_soc_dai_get_drvdata(dai);
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-
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- return priv->dssdev->driver->audio_enable(priv->dssdev);
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-}
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-
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-static int omap_hdmi_dai_hw_params(struct snd_pcm_substream *substream,
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- struct snd_pcm_hw_params *params,
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- struct snd_soc_dai *dai)
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-{
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- struct hdmi_priv *priv = snd_soc_dai_get_drvdata(dai);
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- struct snd_aes_iec958 *iec = &priv->iec;
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- struct snd_cea_861_aud_if *cea = &priv->cea;
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- int err = 0;
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-
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- switch (params_format(params)) {
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- case SNDRV_PCM_FORMAT_S16_LE:
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- priv->dma_data.maxburst = 16;
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- break;
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- case SNDRV_PCM_FORMAT_S24_LE:
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- priv->dma_data.maxburst = 32;
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- break;
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- default:
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- dev_err(dai->dev, "format not supported!\n");
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- return -EINVAL;
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- }
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-
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- /*
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- * fill the IEC-60958 channel status word
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- */
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- /* initialize the word bytes */
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- memset(iec->status, 0, sizeof(iec->status));
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-
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- /* specify IEC-60958-3 (commercial use) */
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- iec->status[0] &= ~IEC958_AES0_PROFESSIONAL;
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-
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- /* specify that the audio is LPCM*/
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- iec->status[0] &= ~IEC958_AES0_NONAUDIO;
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-
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- iec->status[0] |= IEC958_AES0_CON_NOT_COPYRIGHT;
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-
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- iec->status[0] |= IEC958_AES0_CON_EMPHASIS_NONE;
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-
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- iec->status[0] |= IEC958_AES1_PRO_MODE_NOTID;
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-
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- iec->status[1] = IEC958_AES1_CON_GENERAL;
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-
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- iec->status[2] |= IEC958_AES2_CON_SOURCE_UNSPEC;
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-
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- iec->status[2] |= IEC958_AES2_CON_CHANNEL_UNSPEC;
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-
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- switch (params_rate(params)) {
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- case 32000:
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- iec->status[3] |= IEC958_AES3_CON_FS_32000;
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- break;
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- case 44100:
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- iec->status[3] |= IEC958_AES3_CON_FS_44100;
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- break;
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- case 48000:
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- iec->status[3] |= IEC958_AES3_CON_FS_48000;
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- break;
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- case 88200:
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- iec->status[3] |= IEC958_AES3_CON_FS_88200;
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- break;
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- case 96000:
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- iec->status[3] |= IEC958_AES3_CON_FS_96000;
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- break;
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- case 176400:
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- iec->status[3] |= IEC958_AES3_CON_FS_176400;
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- break;
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- case 192000:
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- iec->status[3] |= IEC958_AES3_CON_FS_192000;
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- break;
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- default:
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- dev_err(dai->dev, "rate not supported!\n");
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- return -EINVAL;
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- }
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-
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- /* specify the clock accuracy */
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- iec->status[3] |= IEC958_AES3_CON_CLOCK_1000PPM;
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-
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- /*
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- * specify the word length. The same word length value can mean
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- * two different lengths. Hence, we need to specify the maximum
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- * word length as well.
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- */
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- switch (params_format(params)) {
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- case SNDRV_PCM_FORMAT_S16_LE:
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- iec->status[4] |= IEC958_AES4_CON_WORDLEN_20_16;
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- iec->status[4] &= ~IEC958_AES4_CON_MAX_WORDLEN_24;
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- break;
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- case SNDRV_PCM_FORMAT_S24_LE:
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- iec->status[4] |= IEC958_AES4_CON_WORDLEN_24_20;
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- iec->status[4] |= IEC958_AES4_CON_MAX_WORDLEN_24;
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- break;
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- default:
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- dev_err(dai->dev, "format not supported!\n");
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- return -EINVAL;
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- }
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-
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- /*
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- * Fill the CEA-861 audio infoframe (see spec for details)
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- */
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-
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- cea->db1_ct_cc = (params_channels(params) - 1)
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- & CEA861_AUDIO_INFOFRAME_DB1CC;
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- cea->db1_ct_cc |= CEA861_AUDIO_INFOFRAME_DB1CT_FROM_STREAM;
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-
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- cea->db2_sf_ss = CEA861_AUDIO_INFOFRAME_DB2SF_FROM_STREAM;
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- cea->db2_sf_ss |= CEA861_AUDIO_INFOFRAME_DB2SS_FROM_STREAM;
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-
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- cea->db3 = 0; /* not used, all zeros */
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-
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- /*
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- * The OMAP HDMI IP requires to use the 8-channel channel code when
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- * transmitting more than two channels.
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- */
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- if (params_channels(params) == 2)
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- cea->db4_ca = 0x0;
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- else
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- cea->db4_ca = 0x13;
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-
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- cea->db5_dminh_lsv = CEA861_AUDIO_INFOFRAME_DB5_DM_INH_PROHIBITED;
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- /* the expression is trivial but makes clear what we are doing */
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- cea->db5_dminh_lsv |= (0 & CEA861_AUDIO_INFOFRAME_DB5_LSV);
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-
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- priv->dss_audio.iec = iec;
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- priv->dss_audio.cea = cea;
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-
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- err = priv->dssdev->driver->audio_config(priv->dssdev,
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- &priv->dss_audio);
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-
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- return err;
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-}
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-
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-static int omap_hdmi_dai_trigger(struct snd_pcm_substream *substream, int cmd,
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- struct snd_soc_dai *dai)
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-{
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- struct hdmi_priv *priv = snd_soc_dai_get_drvdata(dai);
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- int err = 0;
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-
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- switch (cmd) {
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- case SNDRV_PCM_TRIGGER_START:
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- case SNDRV_PCM_TRIGGER_RESUME:
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- case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
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- err = priv->dssdev->driver->audio_start(priv->dssdev);
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- break;
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- case SNDRV_PCM_TRIGGER_STOP:
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- case SNDRV_PCM_TRIGGER_SUSPEND:
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- case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
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- priv->dssdev->driver->audio_stop(priv->dssdev);
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- break;
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- default:
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- err = -EINVAL;
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- }
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- return err;
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-}
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-
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-static void omap_hdmi_dai_shutdown(struct snd_pcm_substream *substream,
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- struct snd_soc_dai *dai)
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-{
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- struct hdmi_priv *priv = snd_soc_dai_get_drvdata(dai);
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-
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- priv->dssdev->driver->audio_disable(priv->dssdev);
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-}
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-
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-static const struct snd_soc_dai_ops omap_hdmi_dai_ops = {
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- .startup = omap_hdmi_dai_startup,
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- .hw_params = omap_hdmi_dai_hw_params,
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- .prepare = omap_hdmi_dai_prepare,
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- .trigger = omap_hdmi_dai_trigger,
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- .shutdown = omap_hdmi_dai_shutdown,
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-};
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-
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-static struct snd_soc_dai_driver omap_hdmi_dai = {
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- .playback = {
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- .channels_min = 2,
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- .channels_max = 8,
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- .rates = OMAP_HDMI_RATES,
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- .formats = OMAP_HDMI_FORMATS,
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- },
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- .ops = &omap_hdmi_dai_ops,
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-};
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-
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-static const struct snd_soc_component_driver omap_hdmi_component = {
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- .name = DRV_NAME,
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-};
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-
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-static int omap_hdmi_probe(struct platform_device *pdev)
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-{
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- int ret;
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- struct resource *hdmi_rsrc;
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- struct hdmi_priv *hdmi_data;
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- bool hdmi_dev_found = false;
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-
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- hdmi_data = devm_kzalloc(&pdev->dev, sizeof(*hdmi_data), GFP_KERNEL);
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- if (hdmi_data == NULL) {
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- dev_err(&pdev->dev, "Cannot allocate memory for HDMI data\n");
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- return -ENOMEM;
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- }
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-
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- hdmi_rsrc = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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- if (!hdmi_rsrc) {
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- dev_err(&pdev->dev, "Cannot obtain IORESOURCE_MEM HDMI\n");
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- return -ENODEV;
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- }
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-
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- hdmi_data->dma_data.addr = hdmi_rsrc->start + OMAP_HDMI_AUDIO_DMA_PORT;
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-
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- hdmi_rsrc = platform_get_resource(pdev, IORESOURCE_DMA, 0);
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- if (!hdmi_rsrc) {
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- dev_err(&pdev->dev, "Cannot obtain IORESOURCE_DMA HDMI\n");
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- return -ENODEV;
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- }
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-
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- hdmi_data->dma_req = hdmi_rsrc->start;
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- hdmi_data->dma_data.filter_data = &hdmi_data->dma_req;
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- hdmi_data->dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
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-
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- /*
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- * TODO: We assume that there is only one DSS HDMI device. Future
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- * OMAP implementations may support more than one HDMI devices and
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- * we should provided separate audio support for all of them.
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- */
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- /* Find an HDMI device. */
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- for_each_dss_dev(hdmi_data->dssdev) {
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- omap_dss_get_device(hdmi_data->dssdev);
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-
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- if (!hdmi_data->dssdev->driver) {
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- omap_dss_put_device(hdmi_data->dssdev);
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- continue;
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- }
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-
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- if (hdmi_data->dssdev->type == OMAP_DISPLAY_TYPE_HDMI) {
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- hdmi_dev_found = true;
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- break;
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- }
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- }
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-
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- if (!hdmi_dev_found) {
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- dev_err(&pdev->dev, "no driver for HDMI display found\n");
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- return -ENODEV;
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- }
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-
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- dev_set_drvdata(&pdev->dev, hdmi_data);
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- ret = snd_soc_register_component(&pdev->dev, &omap_hdmi_component,
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- &omap_hdmi_dai, 1);
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-
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- if (ret)
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- return ret;
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-
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- return omap_pcm_platform_register(&pdev->dev);
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-}
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-
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-static int omap_hdmi_remove(struct platform_device *pdev)
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-{
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- struct hdmi_priv *hdmi_data = dev_get_drvdata(&pdev->dev);
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-
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- snd_soc_unregister_component(&pdev->dev);
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-
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- if (hdmi_data == NULL) {
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- dev_err(&pdev->dev, "cannot obtain HDMi data\n");
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- return -ENODEV;
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- }
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-
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- omap_dss_put_device(hdmi_data->dssdev);
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- return 0;
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-}
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-
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-static struct platform_driver hdmi_dai_driver = {
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- .driver = {
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- .name = DRV_NAME,
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- .owner = THIS_MODULE,
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- },
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- .probe = omap_hdmi_probe,
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- .remove = omap_hdmi_remove,
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-};
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-
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-module_platform_driver(hdmi_dai_driver);
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-
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-MODULE_AUTHOR("Jorge Candelaria <jorge.candelaria@ti.com>");
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-MODULE_AUTHOR("Ricardo Neri <ricardo.neri@ti.com>");
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-MODULE_DESCRIPTION("OMAP HDMI SoC Interface");
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-MODULE_LICENSE("GPL");
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-MODULE_ALIAS("platform:" DRV_NAME);
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Jyri Sarha