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>
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 98884bc..6fa871f 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -682,11 +682,132 @@
return 0;
}
+/* read all pin default configurations and save codec->init_pins */
+static int read_pin_defaults(struct hda_codec *codec)
+{
+ int i;
+ hda_nid_t nid = codec->start_nid;
+
+ for (i = 0; i < codec->num_nodes; i++, nid++) {
+ struct hda_pincfg *pin;
+ unsigned int wcaps = get_wcaps(codec, nid);
+ unsigned int wid_type = (wcaps & AC_WCAP_TYPE) >>
+ AC_WCAP_TYPE_SHIFT;
+ if (wid_type != AC_WID_PIN)
+ continue;
+ pin = snd_array_new(&codec->init_pins);
+ if (!pin)
+ return -ENOMEM;
+ pin->nid = nid;
+ pin->cfg = snd_hda_codec_read(codec, nid, 0,
+ AC_VERB_GET_CONFIG_DEFAULT, 0);
+ }
+ return 0;
+}
+
+/* look up the given pin config list and return the item matching with NID */
+static struct hda_pincfg *look_up_pincfg(struct hda_codec *codec,
+ struct snd_array *array,
+ hda_nid_t nid)
+{
+ int i;
+ for (i = 0; i < array->used; i++) {
+ struct hda_pincfg *pin = snd_array_elem(array, i);
+ if (pin->nid == nid)
+ return pin;
+ }
+ return NULL;
+}
+
+/* write a config value for the given NID */
+static void set_pincfg(struct hda_codec *codec, hda_nid_t nid,
+ unsigned int cfg)
+{
+ int i;
+ for (i = 0; i < 4; i++) {
+ snd_hda_codec_write(codec, nid, 0,
+ AC_VERB_SET_CONFIG_DEFAULT_BYTES_0 + i,
+ cfg & 0xff);
+ cfg >>= 8;
+ }
+}
+
+/* set the current pin config value for the given NID.
+ * the value is cached, and read via snd_hda_codec_get_pincfg()
+ */
+int snd_hda_add_pincfg(struct hda_codec *codec, struct snd_array *list,
+ hda_nid_t nid, unsigned int cfg)
+{
+ struct hda_pincfg *pin;
+
+ pin = look_up_pincfg(codec, list, nid);
+ if (!pin) {
+ pin = snd_array_new(list);
+ if (!pin)
+ return -ENOMEM;
+ pin->nid = nid;
+ }
+ pin->cfg = cfg;
+ set_pincfg(codec, nid, cfg);
+ return 0;
+}
+
+int snd_hda_codec_set_pincfg(struct hda_codec *codec,
+ hda_nid_t nid, unsigned int cfg)
+{
+ return snd_hda_add_pincfg(codec, &codec->cur_pins, nid, cfg);
+}
+EXPORT_SYMBOL_HDA(snd_hda_codec_set_pincfg);
+
+/* get the current pin config value of the given pin NID */
+unsigned int snd_hda_codec_get_pincfg(struct hda_codec *codec, hda_nid_t nid)
+{
+ struct hda_pincfg *pin;
+
+ pin = look_up_pincfg(codec, &codec->cur_pins, nid);
+ if (pin)
+ return pin->cfg;
+#ifdef CONFIG_SND_HDA_HWDEP
+ pin = look_up_pincfg(codec, &codec->override_pins, nid);
+ if (pin)
+ return pin->cfg;
+#endif
+ pin = look_up_pincfg(codec, &codec->init_pins, nid);
+ if (pin)
+ return pin->cfg;
+ return 0;
+}
+EXPORT_SYMBOL_HDA(snd_hda_codec_get_pincfg);
+
+/* restore all current pin configs */
+static void restore_pincfgs(struct hda_codec *codec)
+{
+ int i;
+ for (i = 0; i < codec->init_pins.used; i++) {
+ struct hda_pincfg *pin = snd_array_elem(&codec->init_pins, i);
+ set_pincfg(codec, pin->nid,
+ snd_hda_codec_get_pincfg(codec, pin->nid));
+ }
+}
static void init_hda_cache(struct hda_cache_rec *cache,
unsigned int record_size);
static void free_hda_cache(struct hda_cache_rec *cache);
+/* restore the initial pin cfgs and release all pincfg lists */
+static void restore_init_pincfgs(struct hda_codec *codec)
+{
+ /* first free cur_pins and override_pins, then call restore_pincfg
+ * so that only the values in init_pins are restored
+ */
+ snd_array_free(&codec->cur_pins);
+#ifdef CONFIG_SND_HDA_HWDEP
+ snd_array_free(&codec->override_pins);
+#endif
+ restore_pincfgs(codec);
+ snd_array_free(&codec->init_pins);
+}
+
/*
* codec destructor
*/
@@ -694,6 +815,7 @@
{
if (!codec)
return;
+ restore_init_pincfgs(codec);
#ifdef CONFIG_SND_HDA_POWER_SAVE
cancel_delayed_work(&codec->power_work);
flush_workqueue(codec->bus->workq);
@@ -751,6 +873,8 @@
init_hda_cache(&codec->amp_cache, sizeof(struct hda_amp_info));
init_hda_cache(&codec->cmd_cache, sizeof(struct hda_cache_head));
snd_array_init(&codec->mixers, sizeof(struct snd_kcontrol *), 32);
+ snd_array_init(&codec->init_pins, sizeof(struct hda_pincfg), 16);
+ snd_array_init(&codec->cur_pins, sizeof(struct hda_pincfg), 16);
if (codec->bus->modelname) {
codec->modelname = kstrdup(codec->bus->modelname, GFP_KERNEL);
if (!codec->modelname) {
@@ -787,15 +911,18 @@
setup_fg_nodes(codec);
if (!codec->afg && !codec->mfg) {
snd_printdd("hda_codec: no AFG or MFG node found\n");
- snd_hda_codec_free(codec);
- return -ENODEV;
+ err = -ENODEV;
+ goto error;
}
- if (read_widget_caps(codec, codec->afg ? codec->afg : codec->mfg) < 0) {
+ err = read_widget_caps(codec, codec->afg ? codec->afg : codec->mfg);
+ if (err < 0) {
snd_printk(KERN_ERR "hda_codec: cannot malloc\n");
- snd_hda_codec_free(codec);
- return -ENOMEM;
+ goto error;
}
+ err = read_pin_defaults(codec);
+ if (err < 0)
+ goto error;
if (!codec->subsystem_id) {
hda_nid_t nid = codec->afg ? codec->afg : codec->mfg;
@@ -808,10 +935,8 @@
if (do_init) {
err = snd_hda_codec_configure(codec);
- if (err < 0) {
- snd_hda_codec_free(codec);
- return err;
- }
+ if (err < 0)
+ goto error;
}
snd_hda_codec_proc_new(codec);
@@ -824,6 +949,10 @@
if (codecp)
*codecp = codec;
return 0;
+
+ error:
+ snd_hda_codec_free(codec);
+ return err;
}
EXPORT_SYMBOL_HDA(snd_hda_codec_new);
@@ -1334,6 +1463,9 @@
free_hda_cache(&codec->cmd_cache);
init_hda_cache(&codec->amp_cache, sizeof(struct hda_amp_info));
init_hda_cache(&codec->cmd_cache, sizeof(struct hda_cache_head));
+ /* free only cur_pins so that init_pins + override_pins are restored */
+ snd_array_free(&codec->cur_pins);
+ restore_pincfgs(codec);
codec->num_pcms = 0;
codec->pcm_info = NULL;
codec->preset = NULL;
@@ -2175,6 +2307,7 @@
hda_set_power_state(codec,
codec->afg ? codec->afg : codec->mfg,
AC_PWRST_D0);
+ restore_pincfgs(codec); /* restore all current pin configs */
hda_exec_init_verbs(codec);
if (codec->patch_ops.resume)
codec->patch_ops.resume(codec);