469 lines
11 KiB
C
469 lines
11 KiB
C
/*
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*
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* patch_intelhdmi.c - Patch for Intel HDMI codecs
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*
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* Copyright(c) 2008 Intel Corporation. All rights reserved.
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*
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* Authors:
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* Jiang Zhe <zhe.jiang@intel.com>
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* Wu Fengguang <wfg@linux.intel.com>
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*
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* Maintained by:
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* Wu Fengguang <wfg@linux.intel.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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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 MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* 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 Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <sound/core.h>
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#include "hda_codec.h"
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#include "hda_local.h"
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#include "hda_patch.h"
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#define CVT_NID 0x02 /* audio converter */
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#define PIN_NID 0x03 /* HDMI output pin */
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#define INTEL_HDMI_EVENT_TAG 0x08
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struct intel_hdmi_spec {
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struct hda_multi_out multiout;
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struct hda_pcm pcm_rec;
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struct sink_eld sink;
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};
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static struct hda_verb pinout_enable_verb[] = {
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{PIN_NID, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT},
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{} /* terminator */
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};
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static struct hda_verb pinout_disable_verb[] = {
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{PIN_NID, AC_VERB_SET_PIN_WIDGET_CONTROL, 0x00},
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{}
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};
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static struct hda_verb unsolicited_response_verb[] = {
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{PIN_NID, AC_VERB_SET_UNSOLICITED_ENABLE, AC_USRSP_EN |
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INTEL_HDMI_EVENT_TAG},
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{}
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};
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static struct hda_verb def_chan_map[] = {
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{CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x00},
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{CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x11},
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{CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x22},
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{CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x33},
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{CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x44},
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{CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x55},
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{CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x66},
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{CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x77},
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{}
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};
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struct hdmi_audio_infoframe {
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u8 type; /* 0x84 */
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u8 ver; /* 0x01 */
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u8 len; /* 0x0a */
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u8 checksum; /* PB0 */
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u8 CC02_CT47; /* CC in bits 0:2, CT in 4:7 */
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u8 SS01_SF24;
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u8 CXT04;
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u8 CA;
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u8 LFEPBL01_LSV36_DM_INH7;
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u8 reserved[5]; /* PB6 - PB10 */
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};
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/*
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* HDMI routines
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*/
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#ifdef BE_PARANOID
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static void hdmi_get_dip_index(struct hda_codec *codec, hda_nid_t nid,
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int *packet_index, int *byte_index)
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{
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int val;
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val = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_DIP_INDEX, 0);
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*packet_index = val >> 5;
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*byte_index = val & 0x1f;
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}
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#endif
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static void hdmi_set_dip_index(struct hda_codec *codec, hda_nid_t nid,
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int packet_index, int byte_index)
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{
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int val;
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val = (packet_index << 5) | (byte_index & 0x1f);
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snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_HDMI_DIP_INDEX, val);
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}
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static void hdmi_write_dip_byte(struct hda_codec *codec, hda_nid_t nid,
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unsigned char val)
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{
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snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_HDMI_DIP_DATA, val);
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}
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static void hdmi_enable_output(struct hda_codec *codec)
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{
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/* Enable Audio InfoFrame Transmission */
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hdmi_set_dip_index(codec, PIN_NID, 0x0, 0x0);
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snd_hda_codec_write(codec, PIN_NID, 0, AC_VERB_SET_HDMI_DIP_XMIT,
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AC_DIPXMIT_BEST);
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/* Unmute */
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if (get_wcaps(codec, PIN_NID) & AC_WCAP_OUT_AMP)
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snd_hda_codec_write(codec, PIN_NID, 0,
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AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE);
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/* Enable pin out */
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snd_hda_sequence_write(codec, pinout_enable_verb);
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}
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static void hdmi_disable_output(struct hda_codec *codec)
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{
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snd_hda_sequence_write(codec, pinout_disable_verb);
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if (get_wcaps(codec, PIN_NID) & AC_WCAP_OUT_AMP)
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snd_hda_codec_write(codec, PIN_NID, 0,
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AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE);
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/*
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* FIXME: noises may arise when playing music after reloading the
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* kernel module, until the next X restart or monitor repower.
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*/
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}
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static int hdmi_get_channel_count(struct hda_codec *codec)
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{
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return 1 + snd_hda_codec_read(codec, CVT_NID, 0,
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AC_VERB_GET_CVT_CHAN_COUNT, 0);
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}
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static void hdmi_set_channel_count(struct hda_codec *codec, int chs)
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{
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snd_hda_codec_write(codec, CVT_NID, 0,
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AC_VERB_SET_CVT_CHAN_COUNT, chs - 1);
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if (chs != hdmi_get_channel_count(codec))
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snd_printd(KERN_INFO "Channel count expect=%d, real=%d\n",
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chs, hdmi_get_channel_count(codec));
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}
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static void hdmi_debug_slot_mapping(struct hda_codec *codec)
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{
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#ifdef CONFIG_SND_DEBUG_VERBOSE
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int i;
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int slot;
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for (i = 0; i < 8; i++) {
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slot = snd_hda_codec_read(codec, CVT_NID, 0,
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AC_VERB_GET_HDMI_CHAN_SLOT, i);
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printk(KERN_DEBUG "ASP channel %d => slot %d\n",
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slot >> 4, slot & 0x7);
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}
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#endif
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}
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static void hdmi_setup_channel_mapping(struct hda_codec *codec)
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{
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snd_hda_sequence_write(codec, def_chan_map);
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hdmi_debug_slot_mapping(codec);
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}
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static void hdmi_parse_eld(struct hda_codec *codec)
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{
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struct intel_hdmi_spec *spec = codec->spec;
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struct sink_eld *eld = &spec->sink;
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if (!snd_hdmi_get_eld(eld, codec, PIN_NID))
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snd_hdmi_show_eld(eld);
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}
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/*
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* Audio Infoframe routines
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*/
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static void hdmi_debug_dip_size(struct hda_codec *codec)
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{
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#ifdef CONFIG_SND_DEBUG_VERBOSE
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int i;
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int size;
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size = snd_hdmi_get_eld_size(codec, PIN_NID);
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printk(KERN_DEBUG "ELD buf size is %d\n", size);
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for (i = 0; i < 8; i++) {
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size = snd_hda_codec_read(codec, PIN_NID, 0,
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AC_VERB_GET_HDMI_DIP_SIZE, i);
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printk(KERN_DEBUG "DIP GP[%d] buf size is %d\n", i, size);
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}
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#endif
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}
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static void hdmi_clear_dip_buffers(struct hda_codec *codec)
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{
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#ifdef BE_PARANOID
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int i, j;
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int size;
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int pi, bi;
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for (i = 0; i < 8; i++) {
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size = snd_hda_codec_read(codec, PIN_NID, 0,
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AC_VERB_GET_HDMI_DIP_SIZE, i);
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if (size == 0)
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continue;
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hdmi_set_dip_index(codec, PIN_NID, i, 0x0);
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for (j = 1; j < 1000; j++) {
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hdmi_write_dip_byte(codec, PIN_NID, 0x0);
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hdmi_get_dip_index(codec, PIN_NID, &pi, &bi);
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if (pi != i)
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snd_printd(KERN_INFO "dip index %d: %d != %d\n",
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bi, pi, i);
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if (bi == 0) /* byte index wrapped around */
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break;
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}
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snd_printd(KERN_INFO
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"DIP GP[%d] buf reported size=%d, written=%d\n",
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i, size, j);
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}
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#endif
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}
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static void hdmi_fill_audio_infoframe(struct hda_codec *codec,
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struct hdmi_audio_infoframe *ai)
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{
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u8 *params = (u8 *)ai;
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int i;
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hdmi_debug_dip_size(codec);
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hdmi_clear_dip_buffers(codec); /* be paranoid */
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hdmi_set_dip_index(codec, PIN_NID, 0x0, 0x0);
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for (i = 0; i < sizeof(ai); i++)
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hdmi_write_dip_byte(codec, PIN_NID, params[i]);
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}
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static void hdmi_setup_audio_infoframe(struct hda_codec *codec,
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struct snd_pcm_substream *substream)
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{
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struct hdmi_audio_infoframe ai = {
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.type = 0x84,
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.ver = 0x01,
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.len = 0x0a,
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.CC02_CT47 = substream->runtime->channels - 1,
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};
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hdmi_fill_audio_infoframe(codec, &ai);
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}
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/*
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* Unsolicited events
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*/
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static void hdmi_intrinsic_event(struct hda_codec *codec, unsigned int res)
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{
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int pind = !!(res & AC_UNSOL_RES_PD);
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int eldv = !!(res & AC_UNSOL_RES_ELDV);
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printk(KERN_INFO "HDMI intrinsic event: PD=%d ELDV=%d\n", pind, eldv);
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if (pind && eldv) {
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hdmi_parse_eld(codec);
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/* TODO: do real things about ELD */
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}
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}
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static void hdmi_non_intrinsic_event(struct hda_codec *codec, unsigned int res)
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{
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int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;
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int cp_state = !!(res & AC_UNSOL_RES_CP_STATE);
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int cp_ready = !!(res & AC_UNSOL_RES_CP_READY);
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printk(KERN_INFO "HDMI non-intrinsic event: "
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"SUBTAG=0x%x CP_STATE=%d CP_READY=%d\n",
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subtag,
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cp_state,
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cp_ready);
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/* who cares? */
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if (cp_state)
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;
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if (cp_ready)
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;
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}
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static void intel_hdmi_unsol_event(struct hda_codec *codec, unsigned int res)
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{
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int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
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int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;
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if (tag != INTEL_HDMI_EVENT_TAG) {
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snd_printd(KERN_INFO
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"Unexpected HDMI unsolicited event tag 0x%x\n",
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tag);
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return;
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}
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if (subtag == 0)
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hdmi_intrinsic_event(codec, res);
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else
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hdmi_non_intrinsic_event(codec, res);
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}
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/*
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* Callbacks
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*/
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static int intel_hdmi_playback_pcm_open(struct hda_pcm_stream *hinfo,
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struct hda_codec *codec,
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struct snd_pcm_substream *substream)
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{
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struct intel_hdmi_spec *spec = codec->spec;
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return snd_hda_multi_out_dig_open(codec, &spec->multiout);
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}
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static int intel_hdmi_playback_pcm_close(struct hda_pcm_stream *hinfo,
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struct hda_codec *codec,
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struct snd_pcm_substream *substream)
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{
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struct intel_hdmi_spec *spec = codec->spec;
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hdmi_disable_output(codec);
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return snd_hda_multi_out_dig_close(codec, &spec->multiout);
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}
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static int intel_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
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struct hda_codec *codec,
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unsigned int stream_tag,
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unsigned int format,
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struct snd_pcm_substream *substream)
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{
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struct intel_hdmi_spec *spec = codec->spec;
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snd_hda_multi_out_dig_prepare(codec, &spec->multiout, stream_tag,
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format, substream);
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hdmi_set_channel_count(codec, substream->runtime->channels);
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/* wfg: channel mapping not supported by DEVCTG */
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hdmi_setup_channel_mapping(codec);
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hdmi_setup_audio_infoframe(codec, substream);
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hdmi_enable_output(codec);
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return 0;
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}
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static struct hda_pcm_stream intel_hdmi_pcm_playback = {
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.substreams = 1,
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.channels_min = 2,
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.channels_max = 8,
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.nid = CVT_NID, /* NID to query formats and rates and setup streams */
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.ops = {
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.open = intel_hdmi_playback_pcm_open,
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.close = intel_hdmi_playback_pcm_close,
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.prepare = intel_hdmi_playback_pcm_prepare
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},
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};
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static int intel_hdmi_build_pcms(struct hda_codec *codec)
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{
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struct intel_hdmi_spec *spec = codec->spec;
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struct hda_pcm *info = &spec->pcm_rec;
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codec->num_pcms = 1;
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codec->pcm_info = info;
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info->name = "INTEL HDMI";
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info->pcm_type = HDA_PCM_TYPE_HDMI;
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info->stream[SNDRV_PCM_STREAM_PLAYBACK] = intel_hdmi_pcm_playback;
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return 0;
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}
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static int intel_hdmi_build_controls(struct hda_codec *codec)
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{
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struct intel_hdmi_spec *spec = codec->spec;
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int err;
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err = snd_hda_create_spdif_out_ctls(codec, spec->multiout.dig_out_nid);
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if (err < 0)
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return err;
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return 0;
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}
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static int intel_hdmi_init(struct hda_codec *codec)
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{
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/* disable audio output as early as possible */
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hdmi_disable_output(codec);
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snd_hda_sequence_write(codec, unsolicited_response_verb);
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return 0;
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}
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static void intel_hdmi_free(struct hda_codec *codec)
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{
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kfree(codec->spec);
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}
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static struct hda_codec_ops intel_hdmi_patch_ops = {
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.init = intel_hdmi_init,
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.free = intel_hdmi_free,
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.build_pcms = intel_hdmi_build_pcms,
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.build_controls = intel_hdmi_build_controls,
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.unsol_event = intel_hdmi_unsol_event,
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};
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static int patch_intel_hdmi(struct hda_codec *codec)
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{
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struct intel_hdmi_spec *spec;
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spec = kzalloc(sizeof(*spec), GFP_KERNEL);
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if (spec == NULL)
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return -ENOMEM;
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spec->multiout.num_dacs = 0; /* no analog */
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spec->multiout.max_channels = 8;
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spec->multiout.dig_out_nid = CVT_NID;
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codec->spec = spec;
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codec->patch_ops = intel_hdmi_patch_ops;
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snd_hda_eld_proc_new(codec, &spec->sink);
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return 0;
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}
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struct hda_codec_preset snd_hda_preset_intelhdmi[] = {
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{ .id = 0x808629fb, .name = "INTEL G45 DEVCL", .patch = patch_intel_hdmi },
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{ .id = 0x80862801, .name = "INTEL G45 DEVBLC", .patch = patch_intel_hdmi },
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{ .id = 0x80862802, .name = "INTEL G45 DEVCTG", .patch = patch_intel_hdmi },
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{ .id = 0x80862803, .name = "INTEL G45 DEVELK", .patch = patch_intel_hdmi },
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{ .id = 0x10951392, .name = "SiI1392 HDMI", .patch = patch_intel_hdmi },
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{} /* terminator */
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};
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