[alsa-devel] [PATCH] Intel HDMI audio support
Wu, Fengguang
fengguang.wu at intel.com
Wed Nov 5 04:16:56 CET 2008
Add support for Intel G45 integrated HDMI audio codecs.
This initial release supports:
- 2 channel stereo sound output
- report monitor's ELD information
Signed-off-by: Wu Fengguang <wfg at linux.intel.com>
---
sound/pci/Kconfig | 8
sound/pci/hda/Makefile | 1
sound/pci/hda/hda_codec.c | 3
sound/pci/hda/hda_patch.h | 2
sound/pci/hda/patch_intelhdmi.c | 926 ++++++++++++++++++++++++++++++
5 files changed, 940 insertions(+)
--- sound-2.6.orig/sound/pci/hda/hda_patch.h
+++ sound-2.6/sound/pci/hda/hda_patch.h
@@ -20,3 +20,5 @@ extern struct hda_codec_preset snd_hda_p
extern struct hda_codec_preset snd_hda_preset_via[];
/* NVIDIA HDMI codecs */
extern struct hda_codec_preset snd_hda_preset_nvhdmi[];
+/* INTEL HDMI codecs */
+extern struct hda_codec_preset snd_hda_preset_intelhdmi[];
--- sound-2.6.orig/sound/pci/hda/Makefile
+++ sound-2.6/sound/pci/hda/Makefile
@@ -16,5 +16,6 @@ snd-hda-intel-$(CONFIG_SND_HDA_CODEC_ATI
snd-hda-intel-$(CONFIG_SND_HDA_CODEC_CONEXANT) += patch_conexant.o
snd-hda-intel-$(CONFIG_SND_HDA_CODEC_VIA) += patch_via.o
snd-hda-intel-$(CONFIG_SND_HDA_CODEC_NVHDMI) += patch_nvhdmi.o
+snd-hda-intel-$(CONFIG_SND_HDA_CODEC_INTELHDMI) += patch_intelhdmi.o
obj-$(CONFIG_SND_HDA_INTEL) += snd-hda-intel.o
--- sound-2.6.orig/sound/pci/Kconfig
+++ sound-2.6/sound/pci/Kconfig
@@ -574,6 +574,14 @@ config SND_HDA_CODEC_NVHDMI
Say Y here to include NVIDIA HDMI HD-audio codec support in
snd-hda-intel driver, such as NVIDIA MCP78 HDMI.
+config SND_HDA_CODEC_INTELHDMI
+ bool "Build INTEL HDMI HD-audio codec support"
+ depends on SND_HDA_INTEL
+ default y
+ help
+ Say Y here to include INTEL HDMI HD-audio codec support in
+ snd-hda-intel driver, such as Eaglelake integrated HDMI.
+
config SND_HDA_CODEC_CONEXANT
bool "Build Conexant HD-audio codec support"
depends on SND_HDA_INTEL
--- sound-2.6.orig/sound/pci/hda/hda_codec.c
+++ sound-2.6/sound/pci/hda/hda_codec.c
@@ -98,6 +98,9 @@ static const struct hda_codec_preset *hd
#ifdef CONFIG_SND_HDA_CODEC_NVHDMI
snd_hda_preset_nvhdmi,
#endif
+#ifdef CONFIG_SND_HDA_CODEC_INTELHDMI
+ snd_hda_preset_intelhdmi,
+#endif
NULL
};
--- /dev/null
+++ sound-2.6/sound/pci/hda/patch_intelhdmi.c
@@ -0,0 +1,926 @@
+/*
+ *
+ * patch_intelhdmi.c - Patch for Intel HDMI codecs
+ *
+ * Copyright(c) 2008 Intel Corporation. All rights reserved.
+ *
+ * Authors:
+ * Jiang Zhe <zhe.jiang at intel.com>
+ * Wu Fengguang <wfg at linux.intel.com>
+ *
+ * Maintained by:
+ * Wu Fengguang <wfg at linux.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; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * 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.
+ *
+ * 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 <linux/init.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <asm/unaligned.h>
+#include "hda_codec.h"
+#include "hda_local.h"
+#include "hda_patch.h"
+
+#define CVT_NID 0x02 /* audio converter */
+#define PIN_NID 0x03 /* HDMI output pin */
+
+#define INTEL_HDMI_EVENT_TAG 0x08
+
+/*
+ * CEA Short Audio Descriptor data
+ */
+struct cea_sad {
+ int channels;
+ int format; /* (format == 0) indicates invalid SAD */
+ int rates;
+ int sample_bits; /* for LPCM */
+ int max_bitrate; /* for AC3...ATRAC */
+ int profile; /* for WMAPRO */
+};
+
+#define ELD_FIXED_BYTES 20
+#define ELD_MAX_MNL 16
+#define ELD_MAX_SAD 16
+
+/*
+ * ELD: EDID Like Data
+ */
+struct sink_eld {
+ int eld_size;
+ int baseline_len;
+ int eld_ver; /* (eld_ver == 0) indicates invalid ELD */
+ int cea_edid_ver;
+ char monitor_name[ELD_MAX_MNL + 1];
+ int manufacture_id;
+ int product_id;
+ u64 port_id;
+ int support_hdcp;
+ int support_ai;
+ int conn_type;
+ int aud_synch_delay;
+ int spk_alloc;
+ int sad_count;
+ struct cea_sad sad[ELD_MAX_SAD];
+};
+
+struct intel_hdmi_spec {
+ struct hda_multi_out multiout;
+ struct hda_pcm pcm_rec;
+ struct sink_eld sink;
+};
+
+static struct hda_verb pinout_enable_verb[] = {
+ {PIN_NID, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT},
+ {} /* terminator */
+};
+
+static struct hda_verb pinout_disable_verb[] = {
+ {PIN_NID, AC_VERB_SET_PIN_WIDGET_CONTROL, 0x00},
+ {}
+};
+
+static struct hda_verb unsolicited_response_verb[] = {
+ {PIN_NID, AC_VERB_SET_UNSOLICITED_ENABLE, AC_USRSP_EN |
+ INTEL_HDMI_EVENT_TAG},
+ {}
+};
+
+static struct hda_verb def_chan_map[] = {
+ {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x00},
+ {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x11},
+ {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x22},
+ {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x33},
+ {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x44},
+ {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x55},
+ {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x66},
+ {CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x77},
+ {}
+};
+
+
+struct hdmi_audio_infoframe {
+ u8 type; /* 0x84 */
+ u8 ver; /* 0x01 */
+ u8 len; /* 0x0a */
+
+ u8 checksum; /* PB0 */
+ u8 CC02_CT47; /* CC in bits 0:2, CT in 4:7 */
+ u8 SS01_SF24;
+ u8 CXT04;
+ u8 CA;
+ u8 LFEPBL01_LSV36_DM_INH7;
+ u8 reserved[5]; /* PB6 - PB10 */
+};
+
+/*
+ * SS1:SS0 index => sample size
+ */
+static int cea_sample_sizes[4] = {
+ 0, /* 0: Refer to Stream Header */
+ AC_SUPPCM_BITS_16, /* 1: 16 bits */
+ AC_SUPPCM_BITS_20, /* 2: 20 bits */
+ AC_SUPPCM_BITS_24, /* 3: 24 bits */
+};
+
+/*
+ * SF2:SF1:SF0 index => sampling frequency
+ */
+static int cea_sampling_frequencies[8] = {
+ 0, /* 0: Refer to Stream Header */
+ SNDRV_PCM_RATE_32000, /* 1: 32000Hz */
+ SNDRV_PCM_RATE_44100, /* 2: 44100Hz */
+ SNDRV_PCM_RATE_48000, /* 3: 48000Hz */
+ SNDRV_PCM_RATE_88200, /* 4: 88200Hz */
+ SNDRV_PCM_RATE_96000, /* 5: 96000Hz */
+ SNDRV_PCM_RATE_176400, /* 6: 176400Hz */
+ SNDRV_PCM_RATE_192000, /* 7: 192000Hz */
+};
+
+enum eld_versions {
+ ELD_VER_CEA_861D = 2,
+ ELD_VER_PARTIAL = 31,
+};
+
+static char *eld_versoin_names[32] = {
+ "0-reserved",
+ "1-reserved",
+ "CEA-861D or below",
+ "3-reserved",
+ [4 ... 30] = "reserved",
+ [31] = "partial"
+};
+
+enum cea_edid_versions {
+ CEA_EDID_VER_NONE = 0,
+ CEA_EDID_VER_CEA861 = 1,
+ CEA_EDID_VER_CEA861A = 2,
+ CEA_EDID_VER_CEA861BCD = 3,
+ CEA_EDID_VER_RESERVED = 4,
+};
+
+static char *cea_edid_version_names[8] = {
+ "no CEA EDID Timing Extension block present",
+ "CEA-861",
+ "CEA-861-A",
+ "CEA-861-B, C or D",
+ "4-reserved",
+ [5 ... 7] = "reserved"
+};
+
+/*
+ * CEA Speaker Allocation data block bits
+ */
+#define CEA_SA_FLR (0 << 0)
+#define CEA_SA_LFE (1 << 1)
+#define CEA_SA_FC (1 << 2)
+#define CEA_SA_RLR (1 << 3)
+#define CEA_SA_RC (1 << 4)
+#define CEA_SA_FLRC (1 << 5)
+#define CEA_SA_RLRC (1 << 6)
+/* the following are not defined in ELD yet */
+#define CEA_SA_FLRW (1 << 7)
+#define CEA_SA_FLRH (1 << 8)
+#define CEA_SA_TC (1 << 9)
+#define CEA_SA_FCH (1 << 10)
+
+static char *cea_speaker_allocation_names[] = {
+ /* 0 */ "FL/FR",
+ /* 1 */ "LFE",
+ /* 2 */ "FC",
+ /* 3 */ "RL/RR",
+ /* 4 */ "RC",
+ /* 5 */ "FLC/FRC",
+ /* 6 */ "RLC/RRC",
+ /* 7 */ "FLW/FRW",
+ /* 8 */ "FLH/FRH",
+ /* 9 */ "TC",
+ /* 10 */ "FCH",
+};
+
+static char *eld_connection_type_names[4] = {
+ "HDMI",
+ "Display Port",
+ "2-reserved",
+ "3-reserved"
+};
+
+enum cea_audio_coding_types {
+ AUDIO_CODING_TYPE_REF_STREAM_HEADER = 0,
+ AUDIO_CODING_TYPE_LPCM = 1,
+ AUDIO_CODING_TYPE_AC3 = 2,
+ AUDIO_CODING_TYPE_MPEG1 = 3,
+ AUDIO_CODING_TYPE_MP3 = 4,
+ AUDIO_CODING_TYPE_MPEG2 = 5,
+ AUDIO_CODING_TYPE_AACLC = 6,
+ AUDIO_CODING_TYPE_DTS = 7,
+ AUDIO_CODING_TYPE_ATRAC = 8,
+ AUDIO_CODING_TYPE_SACD = 9,
+ AUDIO_CODING_TYPE_EAC3 = 10,
+ AUDIO_CODING_TYPE_DTS_HD = 11,
+ AUDIO_CODING_TYPE_MLP = 12,
+ AUDIO_CODING_TYPE_DST = 13,
+ AUDIO_CODING_TYPE_WMAPRO = 14,
+ AUDIO_CODING_TYPE_REF_CXT = 15,
+ /* also include valid xtypes below */
+ AUDIO_CODING_TYPE_HE_AAC = 15,
+ AUDIO_CODING_TYPE_HE_AAC2 = 16,
+ AUDIO_CODING_TYPE_MPEG_SURROUND = 17,
+};
+
+enum cea_audio_coding_xtypes {
+ AUDIO_CODING_XTYPE_HE_REF_CT = 0,
+ AUDIO_CODING_XTYPE_HE_AAC = 1,
+ AUDIO_CODING_XTYPE_HE_AAC2 = 2,
+ AUDIO_CODING_XTYPE_MPEG_SURROUND = 3,
+ AUDIO_CODING_XTYPE_FIRST_RESERVED = 4,
+};
+
+static char *cea_audio_coding_type_names[] = {
+ /* 0 */ "undefined",
+ /* 1 */ "LPCM",
+ /* 2 */ "AC-3",
+ /* 3 */ "MPEG1",
+ /* 4 */ "MP3",
+ /* 5 */ "MPEG2",
+ /* 6 */ "AAC-LC",
+ /* 7 */ "DTS",
+ /* 8 */ "ATRAC",
+ /* 9 */ "DSD(1-bit audio)",
+ /* 10 */ "Dolby Digital Plus(E-AC-3/DD+)",
+ /* 11 */ "DTS-HD",
+ /* 12 */ "Dolby TrueHD(MLP)",
+ /* 13 */ "DST",
+ /* 14 */ "WMAPro",
+ /* 15 */ "HE-AAC",
+ /* 16 */ "HE-AACv2",
+ /* 17 */ "MPEG Surround",
+};
+
+
+/*
+ * HDMI routines
+ */
+
+static int hdmi_get_eld_size(struct hda_codec *codec, hda_nid_t nid)
+{
+ return snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_DIP_SIZE,
+ AC_DIPSIZE_ELD_BUF);
+}
+
+static void hdmi_get_dip_index(struct hda_codec *codec, hda_nid_t nid,
+ int *packet_index, int *byte_index)
+{
+ int val;
+
+ val = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_DIP_INDEX, 0);
+
+ *packet_index = val >> 5;
+ *byte_index = val & 0x1f;
+}
+
+static void hdmi_set_dip_index(struct hda_codec *codec, hda_nid_t nid,
+ int packet_index, int byte_index)
+{
+ int val;
+
+ val = (packet_index << 5) | (byte_index & 0x1f);
+
+ snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_HDMI_DIP_INDEX, val);
+}
+
+static void hdmi_write_dip_byte(struct hda_codec *codec, hda_nid_t nid,
+ unsigned char val)
+{
+ snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_HDMI_DIP_DATA, val);
+}
+
+static void hdmi_enable_output(struct hda_codec *codec)
+{
+ /* Enable pin out and unmute */
+ snd_hda_sequence_write(codec, pinout_enable_verb);
+ if (get_wcaps(codec, PIN_NID) & AC_WCAP_OUT_AMP)
+ snd_hda_codec_write(codec, PIN_NID, 0,
+ AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE);
+
+ /* Enable Audio InfoFrame Transmission */
+ hdmi_set_dip_index(codec, PIN_NID, 0x0, 0x0);
+ snd_hda_codec_write(codec, PIN_NID, 0, AC_VERB_SET_HDMI_DIP_XMIT,
+ AC_DIPXMIT_BEST);
+}
+
+static void hdmi_disable_output(struct hda_codec *codec)
+{
+ snd_hda_sequence_write(codec, pinout_disable_verb);
+ if (get_wcaps(codec, PIN_NID) & AC_WCAP_OUT_AMP)
+ snd_hda_codec_write(codec, PIN_NID, 0,
+ AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE);
+
+ /*
+ * FIXME: noises may arise when playing music after reloading the
+ * kernel module, until the next X restart or monitor repower.
+ */
+}
+
+static int hdmi_get_channel_count(struct hda_codec *codec)
+{
+ return 1 + snd_hda_codec_read(codec, CVT_NID, 0,
+ AC_VERB_GET_CVT_CHAN_COUNT, 0);
+}
+
+static void hdmi_set_channel_count(struct hda_codec *codec, int chs)
+{
+ snd_hda_codec_write(codec, CVT_NID, 0,
+ AC_VERB_SET_CVT_CHAN_COUNT, chs - 1);
+
+ if (chs != hdmi_get_channel_count(codec))
+ snd_printd(KERN_INFO "Channel count expect=%d, real=%d\n",
+ chs, hdmi_get_channel_count(codec));
+}
+
+static void hdmi_debug_slot_mapping(struct hda_codec *codec)
+{
+#ifdef CONFIG_SND_DEBUG_VERBOSE
+ int i;
+ int slot;
+
+ for (i = 0; i < 8; i++) {
+ slot = snd_hda_codec_read(codec, CVT_NID, 0,
+ AC_VERB_GET_HDMI_CHAN_SLOT, i);
+ printk(KERN_DEBUG "ASP channel %d => slot %d\n",
+ slot >> 4, slot & 0x7);
+ }
+#endif
+}
+
+static void hdmi_setup_channel_mapping(struct hda_codec *codec)
+{
+ snd_hda_sequence_write(codec, def_chan_map);
+ hdmi_debug_slot_mapping(codec);
+}
+
+
+/*
+ * ELD(EDID Like Data) routines
+ */
+
+static int hdmi_present_sense(struct hda_codec *codec, hda_nid_t nid)
+{
+ return snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_PIN_SENSE, 0);
+}
+
+static void hdmi_debug_present_sense(struct hda_codec *codec)
+{
+#ifdef CONFIG_SND_DEBUG_VERBOSE
+ int eldv;
+ int present;
+
+ present = hdmi_present_sense(codec, PIN_NID);
+ eldv = (present & AC_PINSENSE_ELDV);
+ present = (present & AC_PINSENSE_PRESENCE);
+
+ printk(KERN_INFO "pinp = %d, eldv = %d\n", !!present, !!eldv);
+#endif
+}
+
+static unsigned char hdmi_get_eld_byte(struct hda_codec *codec, int byte_index)
+{
+ unsigned int val;
+
+ val = snd_hda_codec_read(codec, PIN_NID, 0,
+ AC_VERB_GET_HDMI_ELDD, byte_index);
+
+#ifdef BE_PARANOID
+ printk(KERN_INFO "ELD data byte %d: 0x%x\n", byte_index, val);
+#endif
+
+ if ((val & AC_ELDD_ELD_VALID) == 0) {
+ snd_printd(KERN_INFO "Invalid ELD data byte %d\n",
+ byte_index);
+ val = 0;
+ }
+
+ return val & AC_ELDD_ELD_DATA;
+}
+
+static inline unsigned char grab_bits(const unsigned char *buf,
+ int byte, int lowbit, int bits)
+{
+ BUG_ON(lowbit > 7);
+ BUG_ON(bits > 8);
+ BUG_ON(bits <= 0);
+
+ return (buf[byte] >> lowbit) & ((1 << bits) - 1);
+}
+
+static void hdmi_update_short_audio_desc(struct cea_sad *a,
+ const unsigned char *buf)
+{
+ int i;
+ int val;
+
+ val = grab_bits(buf, 1, 0, 7);
+ a->rates = 0;
+ for (i = 0; i < 7; i++)
+ if (val & (1 << i))
+ a->rates |= cea_sampling_frequencies[i + 1];
+
+ a->channels = grab_bits(buf, 0, 0, 3);
+ a->channels++;
+
+ a->format = grab_bits(buf, 0, 3, 4);
+ switch (a->format) {
+ case AUDIO_CODING_TYPE_REF_STREAM_HEADER:
+ snd_printd(KERN_INFO
+ "audio coding type 0 not expected in ELD\n");
+ break;
+
+ case AUDIO_CODING_TYPE_LPCM:
+ val = grab_bits(buf, 2, 0, 3);
+ a->sample_bits = 0;
+ for (i = 0; i < 3; i++)
+ if (val & (1 << i))
+ a->sample_bits |= cea_sample_sizes[i + 1];
+ break;
+
+ case AUDIO_CODING_TYPE_AC3:
+ case AUDIO_CODING_TYPE_MPEG1:
+ case AUDIO_CODING_TYPE_MP3:
+ case AUDIO_CODING_TYPE_MPEG2:
+ case AUDIO_CODING_TYPE_AACLC:
+ case AUDIO_CODING_TYPE_DTS:
+ case AUDIO_CODING_TYPE_ATRAC:
+ a->max_bitrate = grab_bits(buf, 2, 0, 8);
+ a->max_bitrate *= 8000;
+ break;
+
+ case AUDIO_CODING_TYPE_SACD:
+ break;
+
+ case AUDIO_CODING_TYPE_EAC3:
+ break;
+
+ case AUDIO_CODING_TYPE_DTS_HD:
+ break;
+
+ case AUDIO_CODING_TYPE_MLP:
+ break;
+
+ case AUDIO_CODING_TYPE_DST:
+ break;
+
+ case AUDIO_CODING_TYPE_WMAPRO:
+ a->profile = grab_bits(buf, 2, 0, 3);
+ break;
+
+ case AUDIO_CODING_TYPE_REF_CXT:
+ a->format = grab_bits(buf, 2, 3, 5);
+ if (a->format == AUDIO_CODING_XTYPE_HE_REF_CT ||
+ a->format >= AUDIO_CODING_XTYPE_FIRST_RESERVED) {
+ snd_printd(KERN_INFO
+ "audio coding xtype %d not expected in ELD\n",
+ a->format);
+ a->format = 0;
+ } else
+ a->format += AUDIO_CODING_TYPE_HE_AAC -
+ AUDIO_CODING_XTYPE_HE_AAC;
+ break;
+ }
+}
+
+static int hdmi_update_sink_eld(struct hda_codec *codec,
+ const unsigned char *buf, int size)
+{
+ struct intel_hdmi_spec *spec = codec->spec;
+ struct sink_eld *e = &spec->sink;
+ int mnl;
+ int i;
+
+ e->eld_ver = grab_bits(buf, 0, 3, 5);
+ if (e->eld_ver != ELD_VER_CEA_861D &&
+ e->eld_ver != ELD_VER_PARTIAL) {
+ snd_printd(KERN_INFO "Unknown ELD version %d\n", e->eld_ver);
+ goto out_fail;
+ }
+
+ e->eld_size = size;
+ e->baseline_len = grab_bits(buf, 2, 0, 8);
+ mnl = grab_bits(buf, 4, 0, 5);
+ e->cea_edid_ver = grab_bits(buf, 4, 5, 3);
+
+ e->support_hdcp = grab_bits(buf, 5, 0, 1);
+ e->support_ai = grab_bits(buf, 5, 1, 1);
+ e->conn_type = grab_bits(buf, 5, 2, 2);
+ e->sad_count = grab_bits(buf, 5, 4, 4);
+
+ e->aud_synch_delay = grab_bits(buf, 6, 0, 8);
+ e->spk_alloc = grab_bits(buf, 7, 0, 7);
+
+ e->port_id = get_unaligned_le64(buf + 8);
+
+ /* not specified, but the spec's tendency is little endian */
+ e->manufacture_id = get_unaligned_le16(buf + 16);
+ e->product_id = get_unaligned_le16(buf + 18);
+
+ if (mnl > ELD_MAX_MNL) {
+ snd_printd(KERN_INFO "MNL is reserved value %d\n", mnl);
+ goto out_fail;
+ } else if (ELD_FIXED_BYTES + mnl > size) {
+ snd_printd(KERN_INFO "out of range MNL %d\n", mnl);
+ goto out_fail;
+ } else
+ strlcpy(e->monitor_name, buf + ELD_FIXED_BYTES, mnl);
+
+ for (i = 0; i < e->sad_count; i++) {
+ if (ELD_FIXED_BYTES + mnl + 3 * (i + 1) > size) {
+ snd_printd(KERN_INFO "out of range SAD %d\n", i);
+ goto out_fail;
+ }
+ hdmi_update_short_audio_desc(e->sad + i,
+ buf + ELD_FIXED_BYTES + mnl + 3 * i);
+ }
+
+ return 0;
+
+out_fail:
+ e->eld_ver = 0;
+ return -EINVAL;
+}
+
+static int hdmi_get_eld(struct hda_codec *codec)
+{
+ int i;
+ int ret;
+ int size;
+ unsigned char *buf;
+
+ i = hdmi_present_sense(codec, PIN_NID) & AC_PINSENSE_ELDV;
+ if (!i)
+ return -ENOENT;
+
+ size = hdmi_get_eld_size(codec, PIN_NID);
+ if (size == 0) {
+ /* wfg: workaround for ASUS P5E-VM HDMI board */
+ snd_printd(KERN_INFO "ELD buf size is 0, force 128\n");
+ size = 128;
+ }
+ if (size < ELD_FIXED_BYTES || size > PAGE_SIZE) {
+ snd_printd(KERN_INFO "Invalid ELD buf size %d\n", size);
+ return -ERANGE;
+ }
+
+ buf = kmalloc(size, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ for (i = 0; i < size; i++)
+ buf[i] = hdmi_get_eld_byte(codec, i);
+
+ ret = hdmi_update_sink_eld(codec, buf, size);
+
+ kfree(buf);
+ return ret;
+}
+
+static void hdmi_show_short_audio_desc(struct cea_sad *a)
+{
+ printk(KERN_INFO "coding type: %s\n",
+ cea_audio_coding_type_names[a->format]);
+ printk(KERN_INFO "channels: %d\n", a->channels);
+ printk(KERN_INFO "sampling frequencies: 0x%x\n", a->rates);
+
+ if (a->format == AUDIO_CODING_TYPE_LPCM)
+ printk(KERN_INFO "sample bits: 0x%x\n", a->sample_bits);
+
+ if (a->max_bitrate)
+ printk(KERN_INFO "max bitrate: %d HZ\n", a->max_bitrate);
+
+ if (a->profile)
+ printk(KERN_INFO "profile: %d\n", a->profile);
+}
+
+static void hdmi_show_eld(struct hda_codec *codec)
+{
+ int i;
+ int j;
+ struct intel_hdmi_spec *spec = codec->spec;
+ struct sink_eld *e = &spec->sink;
+ char buf[80];
+
+ printk(KERN_INFO "ELD buffer size is %d\n", e->eld_size);
+ printk(KERN_INFO "ELD baseline len is %d*4\n", e->baseline_len);
+ printk(KERN_INFO "vendor block len is %d\n",
+ e->eld_size - e->baseline_len * 4 - 4);
+ printk(KERN_INFO "ELD version is %s\n",
+ eld_versoin_names[e->eld_ver]);
+ printk(KERN_INFO "CEA EDID version is %s\n",
+ cea_edid_version_names[e->cea_edid_ver]);
+ printk(KERN_INFO "manufacture id is 0x%x\n", e->manufacture_id);
+ printk(KERN_INFO "product id is 0x%x\n", e->product_id);
+ printk(KERN_INFO "port id is 0x%llx\n", (long long)e->port_id);
+ printk(KERN_INFO "HDCP support is %d\n", e->support_hdcp);
+ printk(KERN_INFO "AI support is %d\n", e->support_ai);
+ printk(KERN_INFO "SAD count is %d\n", e->sad_count);
+ printk(KERN_INFO "audio sync delay is %x\n", e->aud_synch_delay);
+ printk(KERN_INFO "connection type is %s\n",
+ eld_connection_type_names[e->conn_type]);
+ printk(KERN_INFO "monitor name is %s\n", e->monitor_name);
+
+ j = 0;
+ for (i = 0; i < ARRAY_SIZE(cea_speaker_allocation_names); i++) {
+ if (e->spk_alloc & (1 << i))
+ j += snprintf(buf + j, sizeof(buf) - j, " %s",
+ cea_speaker_allocation_names[i]);
+ }
+ buf[j] = '\0'; /* necessary when j == 0 */
+ printk(KERN_INFO "speaker allocations: (0x%x)%s\n", e->spk_alloc, buf);
+
+ for (i = 0; i < e->sad_count; i++)
+ hdmi_show_short_audio_desc(e->sad + i);
+}
+
+/*
+ * Be careful, ELD buf could be totally rubbish!
+ */
+static void hdmi_parse_eld(struct hda_codec *codec)
+{
+ hdmi_debug_present_sense(codec);
+
+ if (!hdmi_get_eld(codec))
+ hdmi_show_eld(codec);
+}
+
+
+/*
+ * Audio Infoframe routines
+ */
+
+static void hdmi_debug_dip_size(struct hda_codec *codec)
+{
+#ifdef CONFIG_SND_DEBUG_VERBOSE
+ int i;
+ int size;
+
+ size = hdmi_get_eld_size(codec, PIN_NID);
+ printk(KERN_DEBUG "ELD buf size is %d\n", size);
+
+ for (i = 0; i < 8; i++) {
+ size = snd_hda_codec_read(codec, PIN_NID, 0,
+ AC_VERB_GET_HDMI_DIP_SIZE, i);
+ printk(KERN_DEBUG "DIP GP[%d] buf size is %d\n", i, size);
+ }
+#endif
+}
+
+static void hdmi_clear_dip_buffers(struct hda_codec *codec)
+{
+#ifdef BE_PARANOID
+ int i, j;
+ int size;
+ int pi, bi;
+ for (i = 0; i < 8; i++) {
+ size = snd_hda_codec_read(codec, PIN_NID, 0,
+ AC_VERB_GET_HDMI_DIP_SIZE, i);
+ if (size == 0)
+ continue;
+
+ hdmi_set_dip_index(codec, PIN_NID, i, 0x0);
+ for (j = 1; j < 1000; j++) {
+ hdmi_write_dip_byte(codec, PIN_NID, 0x0);
+ hdmi_get_dip_index(codec, PIN_NID, &pi, &bi);
+ if (pi != i)
+ snd_printd(KERN_INFO "dip index %d: %d != %d\n",
+ bi, pi, i);
+ if (bi == 0) /* byte index wrapped around */
+ break;
+ }
+ snd_printd(KERN_INFO
+ "DIP GP[%d] buf reported size=%d, written=%d\n",
+ i, size, j);
+ }
+#endif
+}
+
+static void hdmi_setup_audio_infoframe(struct hda_codec *codec,
+ struct snd_pcm_substream *substream)
+{
+ struct hdmi_audio_infoframe audio_infoframe = {
+ .type = 0x84,
+ .ver = 0x01,
+ .len = 0x0a,
+ .CC02_CT47 = substream->runtime->channels - 1,
+ };
+ u8 *params = (u8 *)&audio_infoframe;
+ int i;
+
+ hdmi_debug_dip_size(codec);
+ hdmi_clear_dip_buffers(codec); /* be paranoid */
+
+ hdmi_set_dip_index(codec, PIN_NID, 0x0, 0x0);
+ for (i = 0; i < sizeof(audio_infoframe); i++)
+ hdmi_write_dip_byte(codec, PIN_NID, params[i]);
+}
+
+
+/*
+ * Unsolicited events
+ */
+
+static void hdmi_intrinsic_event(struct hda_codec *codec, unsigned int res)
+{
+ int pind = !!(res & AC_UNSOL_RES_PD);
+ int eldv = !!(res & AC_UNSOL_RES_ELDV);
+
+ printk(KERN_INFO "HDMI intrinsic event: PD=%d ELDV=%d\n", pind, eldv);
+
+ if (pind && eldv) {
+ hdmi_parse_eld(codec);
+ /* TODO: do real things about ELD */
+ }
+}
+
+static void hdmi_non_intrinsic_event(struct hda_codec *codec, unsigned int res)
+{
+ int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;
+ int cp_state = !!(res & AC_UNSOL_RES_CP_STATE);
+ int cp_ready = !!(res & AC_UNSOL_RES_CP_READY);
+
+ printk(KERN_INFO "HDMI non-intrinsic event: "
+ "SUBTAG=0x%x CP_STATE=%d CP_READY=%d\n",
+ subtag,
+ cp_state,
+ cp_ready);
+
+ /* who cares? */
+ if (cp_state)
+ ;
+ if (cp_ready)
+ ;
+}
+
+
+static void intel_hdmi_unsol_event(struct hda_codec *codec, unsigned int res)
+{
+ int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
+ int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;
+
+ if (tag != INTEL_HDMI_EVENT_TAG) {
+ snd_printd(KERN_INFO
+ "Unexpected HDMI unsolicited event tag 0x%x\n",
+ tag);
+ return;
+ }
+
+ if (subtag == 0)
+ hdmi_intrinsic_event(codec, res);
+ else
+ hdmi_non_intrinsic_event(codec, res);
+}
+
+/*
+ * Callbacks
+ */
+
+static int intel_hdmi_playback_pcm_open(struct hda_pcm_stream *hinfo,
+ struct hda_codec *codec,
+ struct snd_pcm_substream *substream)
+{
+ struct intel_hdmi_spec *spec = codec->spec;
+
+ return snd_hda_multi_out_dig_open(codec, &spec->multiout);
+}
+
+static int intel_hdmi_playback_pcm_close(struct hda_pcm_stream *hinfo,
+ struct hda_codec *codec,
+ struct snd_pcm_substream *substream)
+{
+ struct intel_hdmi_spec *spec = codec->spec;
+
+ hdmi_disable_output(codec);
+
+ return snd_hda_multi_out_dig_close(codec, &spec->multiout);
+}
+
+static int intel_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
+ struct hda_codec *codec,
+ unsigned int stream_tag,
+ unsigned int format,
+ struct snd_pcm_substream *substream)
+{
+ struct intel_hdmi_spec *spec = codec->spec;
+
+ snd_hda_multi_out_dig_prepare(codec, &spec->multiout, stream_tag,
+ format, substream);
+
+ hdmi_set_channel_count(codec, substream->runtime->channels);
+
+ /* wfg: channel mapping not supported by DEVCTG */
+ hdmi_setup_channel_mapping(codec);
+
+ hdmi_setup_audio_infoframe(codec, substream);
+
+ hdmi_enable_output(codec);
+
+ return 0;
+}
+
+static struct hda_pcm_stream intel_hdmi_pcm_playback = {
+ .substreams = 1,
+ .channels_min = 2,
+ .channels_max = 8,
+ .nid = CVT_NID, /* NID to query formats and rates and setup streams */
+ .ops = {
+ .open = intel_hdmi_playback_pcm_open,
+ .close = intel_hdmi_playback_pcm_close,
+ .prepare = intel_hdmi_playback_pcm_prepare
+ },
+};
+
+static int intel_hdmi_build_pcms(struct hda_codec *codec)
+{
+ struct intel_hdmi_spec *spec = codec->spec;
+ struct hda_pcm *info = &spec->pcm_rec;
+
+ codec->num_pcms = 1;
+ codec->pcm_info = info;
+
+ info->name = "INTEL HDMI";
+ info->pcm_type = HDA_PCM_TYPE_HDMI;
+ info->stream[SNDRV_PCM_STREAM_PLAYBACK] = intel_hdmi_pcm_playback;
+
+ return 0;
+}
+
+static int intel_hdmi_build_controls(struct hda_codec *codec)
+{
+ struct intel_hdmi_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 intel_hdmi_init(struct hda_codec *codec)
+{
+ /* disable audio output as early as possible */
+ hdmi_disable_output(codec);
+
+ snd_hda_sequence_write(codec, unsolicited_response_verb);
+
+ return 0;
+}
+
+static void intel_hdmi_free(struct hda_codec *codec)
+{
+ kfree(codec->spec);
+}
+
+static struct hda_codec_ops intel_hdmi_patch_ops = {
+ .init = intel_hdmi_init,
+ .free = intel_hdmi_free,
+ .build_pcms = intel_hdmi_build_pcms,
+ .build_controls = intel_hdmi_build_controls,
+ .unsol_event = intel_hdmi_unsol_event,
+};
+
+static int patch_intel_hdmi(struct hda_codec *codec)
+{
+ struct intel_hdmi_spec *spec;
+
+ spec = kzalloc(sizeof(*spec), GFP_KERNEL);
+ if (spec == NULL)
+ return -ENOMEM;
+
+ spec->multiout.num_dacs = 0; /* no analog */
+ spec->multiout.max_channels = 8;
+ spec->multiout.dig_out_nid = CVT_NID;
+
+ codec->spec = spec;
+ codec->patch_ops = intel_hdmi_patch_ops;
+
+ return 0;
+}
+
+struct hda_codec_preset snd_hda_preset_intelhdmi[] = {
+ { .id = 0x808629fb, .name = "INTEL G45 DEVCL", .patch = patch_intel_hdmi },
+ { .id = 0x80862801, .name = "INTEL G45 DEVBLC", .patch = patch_intel_hdmi },
+ { .id = 0x80862802, .name = "INTEL G45 DEVCTG", .patch = patch_intel_hdmi },
+ { .id = 0x80862803, .name = "INTEL G45 DEVELK", .patch = patch_intel_hdmi },
+ {} /* terminator */
+};
More information about the Alsa-devel
mailing list