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d8a766a16e
Now we create the standard HD-audio bus (/sys/bus/hdaudio), and bind the codec driver with the codec device over there. This is the first step of the whole transition so that the changes to each codec driver are kept as minimal as possible. Each codec driver needs to register hda_codec_driver struct containing the currently existing preset via the new helper macro module_hda_codec_driver(). The old hda_codec_preset_list is replaced with this infrastructure. The generic parsers (for HDMI and other) are also included in the preset with the special IDs to bind uniquely. In HD-audio core side, the device binding code is split to hda_bind.c. It provides the snd_hda_bus_type implementation to match the codec driver with the given codec vendor ID. It also manages the module auto-loading by itself like before: when the matching isn't found, it tries to probe the corresponding codec modules, and finally falls back to the generic drivers. (The special ID mentioned above is set at this stage.) The only visible change to outside is that the hdaudio sysfs entry now appears in /sys/bus/devices, not as a sound class device. More works to move the suspend/resume and remove ops will be (hopefully) done in later patches. Signed-off-by: Takashi Iwai <tiwai@suse.de>
105 lines
2.7 KiB
C
105 lines
2.7 KiB
C
/*
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* HD audio interface patch for Creative X-Fi CA0110-IBG chip
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*
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* Copyright (c) 2008 Takashi Iwai <tiwai@suse.de>
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*
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* This driver is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This driver is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU 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., 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/slab.h>
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#include <linux/module.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_auto_parser.h"
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#include "hda_jack.h"
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#include "hda_generic.h"
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static const struct hda_codec_ops ca0110_patch_ops = {
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.build_controls = snd_hda_gen_build_controls,
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.build_pcms = snd_hda_gen_build_pcms,
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.init = snd_hda_gen_init,
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.free = snd_hda_gen_free,
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.unsol_event = snd_hda_jack_unsol_event,
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};
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static int ca0110_parse_auto_config(struct hda_codec *codec)
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{
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struct hda_gen_spec *spec = codec->spec;
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int err;
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err = snd_hda_parse_pin_defcfg(codec, &spec->autocfg, NULL, 0);
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if (err < 0)
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return err;
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err = snd_hda_gen_parse_auto_config(codec, &spec->autocfg);
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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 patch_ca0110(struct hda_codec *codec)
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{
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struct hda_gen_spec *spec;
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int err;
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spec = kzalloc(sizeof(*spec), GFP_KERNEL);
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if (!spec)
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return -ENOMEM;
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snd_hda_gen_spec_init(spec);
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codec->spec = spec;
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spec->multi_cap_vol = 1;
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codec->bus->needs_damn_long_delay = 1;
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err = ca0110_parse_auto_config(codec);
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if (err < 0)
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goto error;
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codec->patch_ops = ca0110_patch_ops;
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return 0;
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error:
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snd_hda_gen_free(codec);
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return err;
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}
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/*
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* patch entries
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*/
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static const struct hda_codec_preset snd_hda_preset_ca0110[] = {
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{ .id = 0x1102000a, .name = "CA0110-IBG", .patch = patch_ca0110 },
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{ .id = 0x1102000b, .name = "CA0110-IBG", .patch = patch_ca0110 },
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{ .id = 0x1102000d, .name = "SB0880 X-Fi", .patch = patch_ca0110 },
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{} /* terminator */
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};
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MODULE_ALIAS("snd-hda-codec-id:1102000a");
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MODULE_ALIAS("snd-hda-codec-id:1102000b");
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MODULE_ALIAS("snd-hda-codec-id:1102000d");
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("Creative CA0110-IBG HD-audio codec");
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static struct hda_codec_driver ca0110_driver = {
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.preset = snd_hda_preset_ca0110,
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};
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module_hda_codec_driver(ca0110_driver);
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