[ALSA] hda - Add support for the ATI RS600 HDMI audio device
Add support for the ATI RS600 HDMI audio device. It has a one-stream
pure digital stereo codec that isn't handled by the generic codec
support.
Signed-off-by: Felix Kuehling <fkuehlin@ati.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/patch_atihdmi.c b/sound/pci/hda/patch_atihdmi.c
new file mode 100644
index 0000000..a27440f
--- /dev/null
+++ b/sound/pci/hda/patch_atihdmi.c
@@ -0,0 +1,165 @@
+/*
+ * Universal Interface for Intel High Definition Audio Codec
+ *
+ * HD audio interface patch for ATI HDMI codecs
+ *
+ * Copyright (c) 2006 ATI Technologies Inc.
+ *
+ *
+ * This driver 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This driver 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <sound/driver.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/pci.h>
+#include <sound/core.h>
+#include "hda_codec.h"
+#include "hda_local.h"
+
+struct atihdmi_spec {
+ struct hda_multi_out multiout;
+
+ struct hda_pcm pcm_rec;
+};
+
+static struct hda_verb atihdmi_basic_init[] = {
+ /* enable digital output on pin widget */
+ { 0x03, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT },
+ {} /* terminator */
+};
+
+/*
+ * Controls
+ */
+static int atihdmi_build_controls(struct hda_codec *codec)
+{
+ struct atihdmi_spec *spec = codec->spec;
+ int err;
+
+ err = snd_hda_create_spdif_out_ctls(codec, spec->multiout.dig_out_nid);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int atihdmi_init(struct hda_codec *codec)
+{
+ snd_hda_sequence_write(codec, atihdmi_basic_init);
+ return 0;
+}
+
+#ifdef CONFIG_PM
+/*
+ * resume
+ */
+static int atihdmi_resume(struct hda_codec *codec)
+{
+ atihdmi_init(codec);
+ snd_hda_resume_spdif_out(codec);
+
+ return 0;
+}
+#endif
+
+/*
+ * Digital out
+ */
+static int atihdmi_dig_playback_pcm_open(struct hda_pcm_stream *hinfo,
+ struct hda_codec *codec,
+ struct snd_pcm_substream *substream)
+{
+ struct atihdmi_spec *spec = codec->spec;
+ return snd_hda_multi_out_dig_open(codec, &spec->multiout);
+}
+
+static int atihdmi_dig_playback_pcm_close(struct hda_pcm_stream *hinfo,
+ struct hda_codec *codec,
+ struct snd_pcm_substream *substream)
+{
+ struct atihdmi_spec *spec = codec->spec;
+ return snd_hda_multi_out_dig_close(codec, &spec->multiout);
+}
+
+static struct hda_pcm_stream atihdmi_pcm_digital_playback = {
+ .substreams = 1,
+ .channels_min = 2,
+ .channels_max = 2,
+ .nid = 0x2, /* NID to query formats and rates and setup streams */
+ .ops = {
+ .open = atihdmi_dig_playback_pcm_open,
+ .close = atihdmi_dig_playback_pcm_close
+ },
+};
+
+static int atihdmi_build_pcms(struct hda_codec *codec)
+{
+ struct atihdmi_spec *spec = codec->spec;
+ struct hda_pcm *info = &spec->pcm_rec;
+
+ codec->num_pcms = 1;
+ codec->pcm_info = info;
+
+ info->name = "ATI HDMI";
+ info->stream[SNDRV_PCM_STREAM_PLAYBACK] = atihdmi_pcm_digital_playback;
+
+ return 0;
+}
+
+static void atihdmi_free(struct hda_codec *codec)
+{
+ kfree(codec->spec);
+}
+
+static struct hda_codec_ops atihdmi_patch_ops = {
+ .build_controls = atihdmi_build_controls,
+ .build_pcms = atihdmi_build_pcms,
+ .init = atihdmi_init,
+ .free = atihdmi_free,
+#ifdef CONFIG_PM
+ .resume = atihdmi_resume,
+#endif
+};
+
+static int patch_atihdmi(struct hda_codec *codec)
+{
+ struct atihdmi_spec *spec;
+
+ spec = kzalloc(sizeof(*spec), GFP_KERNEL);
+ if (spec == NULL)
+ return -ENOMEM;
+
+ codec->spec = spec;
+
+ spec->multiout.num_dacs = 0; /* no analog */
+ spec->multiout.max_channels = 2;
+ spec->multiout.dig_out_nid = 0x2; /* NID for copying analog to digital,
+ * seems to be unused in pure-digital
+ * case. */
+
+ codec->patch_ops = atihdmi_patch_ops;
+
+ return 0;
+}
+
+/*
+ * patch entries
+ */
+struct hda_codec_preset snd_hda_preset_atihdmi[] = {
+ { .id = 0x1002793c, .name = "ATI RS600 HDMI", .patch = patch_atihdmi },
+ {} /* terminator */
+};