ALSA: hda - Add generic pincfg initialization
Added the generic pincfg cache and save/restore functions. Also introduced the pin-overriding via hwdep sysfs. Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
parent
d2f57cd54a
commit
3be141494a
3 changed files with 223 additions and 9 deletions
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@ -682,11 +682,132 @@ static int read_widget_caps(struct hda_codec *codec, hda_nid_t fg_node)
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return 0;
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}
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/* read all pin default configurations and save codec->init_pins */
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static int read_pin_defaults(struct hda_codec *codec)
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{
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int i;
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hda_nid_t nid = codec->start_nid;
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for (i = 0; i < codec->num_nodes; i++, nid++) {
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struct hda_pincfg *pin;
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unsigned int wcaps = get_wcaps(codec, nid);
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unsigned int wid_type = (wcaps & AC_WCAP_TYPE) >>
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AC_WCAP_TYPE_SHIFT;
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if (wid_type != AC_WID_PIN)
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continue;
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pin = snd_array_new(&codec->init_pins);
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if (!pin)
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return -ENOMEM;
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pin->nid = nid;
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pin->cfg = snd_hda_codec_read(codec, nid, 0,
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AC_VERB_GET_CONFIG_DEFAULT, 0);
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}
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return 0;
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}
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/* look up the given pin config list and return the item matching with NID */
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static struct hda_pincfg *look_up_pincfg(struct hda_codec *codec,
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struct snd_array *array,
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hda_nid_t nid)
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{
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int i;
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for (i = 0; i < array->used; i++) {
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struct hda_pincfg *pin = snd_array_elem(array, i);
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if (pin->nid == nid)
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return pin;
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}
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return NULL;
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}
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/* write a config value for the given NID */
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static void set_pincfg(struct hda_codec *codec, hda_nid_t nid,
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unsigned int cfg)
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{
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int i;
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for (i = 0; i < 4; i++) {
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snd_hda_codec_write(codec, nid, 0,
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AC_VERB_SET_CONFIG_DEFAULT_BYTES_0 + i,
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cfg & 0xff);
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cfg >>= 8;
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}
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}
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/* set the current pin config value for the given NID.
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* the value is cached, and read via snd_hda_codec_get_pincfg()
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*/
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int snd_hda_add_pincfg(struct hda_codec *codec, struct snd_array *list,
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hda_nid_t nid, unsigned int cfg)
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{
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struct hda_pincfg *pin;
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pin = look_up_pincfg(codec, list, nid);
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if (!pin) {
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pin = snd_array_new(list);
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if (!pin)
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return -ENOMEM;
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pin->nid = nid;
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}
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pin->cfg = cfg;
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set_pincfg(codec, nid, cfg);
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return 0;
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}
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int snd_hda_codec_set_pincfg(struct hda_codec *codec,
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hda_nid_t nid, unsigned int cfg)
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{
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return snd_hda_add_pincfg(codec, &codec->cur_pins, nid, cfg);
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}
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EXPORT_SYMBOL_HDA(snd_hda_codec_set_pincfg);
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/* get the current pin config value of the given pin NID */
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unsigned int snd_hda_codec_get_pincfg(struct hda_codec *codec, hda_nid_t nid)
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{
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struct hda_pincfg *pin;
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pin = look_up_pincfg(codec, &codec->cur_pins, nid);
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if (pin)
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return pin->cfg;
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#ifdef CONFIG_SND_HDA_HWDEP
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pin = look_up_pincfg(codec, &codec->override_pins, nid);
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if (pin)
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return pin->cfg;
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#endif
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pin = look_up_pincfg(codec, &codec->init_pins, nid);
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if (pin)
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return pin->cfg;
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return 0;
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}
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EXPORT_SYMBOL_HDA(snd_hda_codec_get_pincfg);
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/* restore all current pin configs */
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static void restore_pincfgs(struct hda_codec *codec)
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{
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int i;
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for (i = 0; i < codec->init_pins.used; i++) {
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struct hda_pincfg *pin = snd_array_elem(&codec->init_pins, i);
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set_pincfg(codec, pin->nid,
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snd_hda_codec_get_pincfg(codec, pin->nid));
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}
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}
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static void init_hda_cache(struct hda_cache_rec *cache,
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unsigned int record_size);
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static void free_hda_cache(struct hda_cache_rec *cache);
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/* restore the initial pin cfgs and release all pincfg lists */
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static void restore_init_pincfgs(struct hda_codec *codec)
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{
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/* first free cur_pins and override_pins, then call restore_pincfg
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* so that only the values in init_pins are restored
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*/
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snd_array_free(&codec->cur_pins);
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#ifdef CONFIG_SND_HDA_HWDEP
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snd_array_free(&codec->override_pins);
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#endif
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restore_pincfgs(codec);
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snd_array_free(&codec->init_pins);
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}
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/*
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* codec destructor
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*/
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@ -694,6 +815,7 @@ static void snd_hda_codec_free(struct hda_codec *codec)
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{
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if (!codec)
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return;
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restore_init_pincfgs(codec);
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#ifdef CONFIG_SND_HDA_POWER_SAVE
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cancel_delayed_work(&codec->power_work);
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flush_workqueue(codec->bus->workq);
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@ -751,6 +873,8 @@ int /*__devinit*/ snd_hda_codec_new(struct hda_bus *bus, unsigned int codec_addr
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init_hda_cache(&codec->amp_cache, sizeof(struct hda_amp_info));
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init_hda_cache(&codec->cmd_cache, sizeof(struct hda_cache_head));
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snd_array_init(&codec->mixers, sizeof(struct snd_kcontrol *), 32);
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snd_array_init(&codec->init_pins, sizeof(struct hda_pincfg), 16);
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snd_array_init(&codec->cur_pins, sizeof(struct hda_pincfg), 16);
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if (codec->bus->modelname) {
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codec->modelname = kstrdup(codec->bus->modelname, GFP_KERNEL);
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if (!codec->modelname) {
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@ -787,15 +911,18 @@ int /*__devinit*/ snd_hda_codec_new(struct hda_bus *bus, unsigned int codec_addr
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setup_fg_nodes(codec);
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if (!codec->afg && !codec->mfg) {
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snd_printdd("hda_codec: no AFG or MFG node found\n");
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snd_hda_codec_free(codec);
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return -ENODEV;
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err = -ENODEV;
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goto error;
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}
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if (read_widget_caps(codec, codec->afg ? codec->afg : codec->mfg) < 0) {
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err = read_widget_caps(codec, codec->afg ? codec->afg : codec->mfg);
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if (err < 0) {
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snd_printk(KERN_ERR "hda_codec: cannot malloc\n");
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snd_hda_codec_free(codec);
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return -ENOMEM;
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goto error;
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}
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err = read_pin_defaults(codec);
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if (err < 0)
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goto error;
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if (!codec->subsystem_id) {
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hda_nid_t nid = codec->afg ? codec->afg : codec->mfg;
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@ -808,10 +935,8 @@ int /*__devinit*/ snd_hda_codec_new(struct hda_bus *bus, unsigned int codec_addr
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if (do_init) {
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err = snd_hda_codec_configure(codec);
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if (err < 0) {
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snd_hda_codec_free(codec);
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return err;
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}
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if (err < 0)
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goto error;
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}
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snd_hda_codec_proc_new(codec);
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@ -824,6 +949,10 @@ int /*__devinit*/ snd_hda_codec_new(struct hda_bus *bus, unsigned int codec_addr
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if (codecp)
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*codecp = codec;
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return 0;
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error:
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snd_hda_codec_free(codec);
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return err;
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}
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EXPORT_SYMBOL_HDA(snd_hda_codec_new);
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@ -1334,6 +1463,9 @@ void snd_hda_codec_reset(struct hda_codec *codec)
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free_hda_cache(&codec->cmd_cache);
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init_hda_cache(&codec->amp_cache, sizeof(struct hda_amp_info));
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init_hda_cache(&codec->cmd_cache, sizeof(struct hda_cache_head));
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/* free only cur_pins so that init_pins + override_pins are restored */
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snd_array_free(&codec->cur_pins);
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restore_pincfgs(codec);
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codec->num_pcms = 0;
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codec->pcm_info = NULL;
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codec->preset = NULL;
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@ -2175,6 +2307,7 @@ static void hda_call_codec_resume(struct hda_codec *codec)
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hda_set_power_state(codec,
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codec->afg ? codec->afg : codec->mfg,
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AC_PWRST_D0);
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restore_pincfgs(codec); /* restore all current pin configs */
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hda_exec_init_verbs(codec);
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if (codec->patch_ops.resume)
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codec->patch_ops.resume(codec);
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