[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>

1 files changed, 165 insertions, 0 deletions

diff --git a/sound/pci/hda/patch_atihdmi.c b/sound/pci/hda/patch_atihdmi.c
new file mode 100644
index 000000000000..a27440ffd1c8
--- /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 */
+};