1 files changed, 353 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_jack.c b/sound/pci/hda/hda_jack.c
new file mode 100644
index 00000000000..d8a35da0803
--- /dev/null
+++ b/sound/pci/hda/hda_jack.c
@@ -0,0 +1,353 @@
+/*
+ * Jack-detection handling for HD-audio
+ *
+ * Copyright (c) 2011 Takashi Iwai <tiwai@suse.de>
+ *
+ * This driver 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.
+ */
+
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/export.h>
+#include <sound/core.h>
+#include <sound/control.h>
+#include <sound/jack.h>
+#include "hda_codec.h"
+#include "hda_local.h"
+#include "hda_jack.h"
+
+/* execute pin sense measurement */
+static u32 read_pin_sense(struct hda_codec *codec, hda_nid_t nid)
+{
+	u32 pincap;
+
+	if (!codec->no_trigger_sense) {
+		pincap = snd_hda_query_pin_caps(codec, nid);
+		if (pincap & AC_PINCAP_TRIG_REQ) /* need trigger? */
+			snd_hda_codec_read(codec, nid, 0,
+					AC_VERB_SET_PIN_SENSE, 0);
+	}
+	return snd_hda_codec_read(codec, nid, 0,
+				  AC_VERB_GET_PIN_SENSE, 0);
+}
+
+/**
+ * snd_hda_jack_tbl_get - query the jack-table entry for the given NID
+ */
+struct hda_jack_tbl *
+snd_hda_jack_tbl_get(struct hda_codec *codec, hda_nid_t nid)
+{
+	struct hda_jack_tbl *jack = codec->jacktbl.list;
+	int i;
+
+	if (!nid || !jack)
+		return NULL;
+	for (i = 0; i < codec->jacktbl.used; i++, jack++)
+		if (jack->nid == nid)
+			return jack;
+	return NULL;
+}
+EXPORT_SYMBOL_HDA(snd_hda_jack_tbl_get);
+
+/**
+ * snd_hda_jack_tbl_get_from_tag - query the jack-table entry for the given tag
+ */
+struct hda_jack_tbl *
+snd_hda_jack_tbl_get_from_tag(struct hda_codec *codec, unsigned char tag)
+{
+	struct hda_jack_tbl *jack = codec->jacktbl.list;
+	int i;
+
+	if (!tag || !jack)
+		return NULL;
+	for (i = 0; i < codec->jacktbl.used; i++, jack++)
+		if (jack->tag == tag)
+			return jack;
+	return NULL;
+}
+EXPORT_SYMBOL_HDA(snd_hda_jack_tbl_get_from_tag);
+
+/**
+ * snd_hda_jack_tbl_new - create a jack-table entry for the given NID
+ */
+struct hda_jack_tbl *
+snd_hda_jack_tbl_new(struct hda_codec *codec, hda_nid_t nid)
+{
+	struct hda_jack_tbl *jack = snd_hda_jack_tbl_get(codec, nid);
+	if (jack)
+		return jack;
+	snd_array_init(&codec->jacktbl, sizeof(*jack), 16);
+	jack = snd_array_new(&codec->jacktbl);
+	if (!jack)
+		return NULL;
+	jack->nid = nid;
+	jack->jack_dirty = 1;
+	jack->tag = codec->jacktbl.used;
+	return jack;
+}
+EXPORT_SYMBOL_HDA(snd_hda_jack_tbl_new);
+
+void snd_hda_jack_tbl_clear(struct hda_codec *codec)
+{
+#ifdef CONFIG_SND_HDA_INPUT_JACK
+	/* free jack instances manually when clearing/reconfiguring */
+	if (!codec->bus->shutdown && codec->jacktbl.list) {
+		struct hda_jack_tbl *jack = codec->jacktbl.list;
+		int i;
+		for (i = 0; i < codec->jacktbl.used; i++, jack++) {
+			if (jack->jack)
+				snd_device_free(codec->bus->card, jack->jack);
+		}
+	}
+#endif
+	snd_array_free(&codec->jacktbl);
+}
+
+/* update the cached value and notification flag if needed */
+static void jack_detect_update(struct hda_codec *codec,
+			       struct hda_jack_tbl *jack)
+{
+	if (jack->jack_dirty || !jack->jack_detect) {
+		jack->pin_sense = read_pin_sense(codec, jack->nid);
+		jack->jack_dirty = 0;
+	}
+}
+
+/**
+ * snd_hda_set_dirty_all - Mark all the cached as dirty
+ *
+ * This function sets the dirty flag to all entries of jack table.
+ * It's called from the resume path in hda_codec.c.
+ */
+void snd_hda_jack_set_dirty_all(struct hda_codec *codec)
+{
+	struct hda_jack_tbl *jack = codec->jacktbl.list;
+	int i;
+
+	for (i = 0; i < codec->jacktbl.used; i++, jack++)
+		if (jack->nid)
+			jack->jack_dirty = 1;
+}
+EXPORT_SYMBOL_HDA(snd_hda_jack_set_dirty_all);
+
+/**
+ * snd_hda_pin_sense - execute pin sense measurement
+ * @codec: the CODEC to sense
+ * @nid: the pin NID to sense
+ *
+ * Execute necessary pin sense measurement and return its Presence Detect,
+ * Impedance, ELD Valid etc. status bits.
+ */
+u32 snd_hda_pin_sense(struct hda_codec *codec, hda_nid_t nid)
+{
+	struct hda_jack_tbl *jack = snd_hda_jack_tbl_get(codec, nid);
+	if (jack) {
+		jack_detect_update(codec, jack);
+		return jack->pin_sense;
+	}
+	return read_pin_sense(codec, nid);
+}
+EXPORT_SYMBOL_HDA(snd_hda_pin_sense);
+
+#define get_jack_plug_state(sense) !!(sense & AC_PINSENSE_PRESENCE)
+
+/**
+ * snd_hda_jack_detect - query pin Presence Detect status
+ * @codec: the CODEC to sense
+ * @nid: the pin NID to sense
+ *
+ * Query and return the pin's Presence Detect status.
+ */
+int snd_hda_jack_detect(struct hda_codec *codec, hda_nid_t nid)
+{
+	u32 sense = snd_hda_pin_sense(codec, nid);
+	return get_jack_plug_state(sense);
+}
+EXPORT_SYMBOL_HDA(snd_hda_jack_detect);
+
+/**
+ * snd_hda_jack_detect_enable - enable the jack-detection
+ */
+int snd_hda_jack_detect_enable(struct hda_codec *codec, hda_nid_t nid,
+			       unsigned char action)
+{
+	struct hda_jack_tbl *jack = snd_hda_jack_tbl_new(codec, nid);
+	if (!jack)
+		return -ENOMEM;
+	if (jack->jack_detect)
+		return 0; /* already registered */
+	jack->jack_detect = 1;
+	if (action)
+		jack->action = action;
+	return snd_hda_codec_write_cache(codec, nid, 0,
+					 AC_VERB_SET_UNSOLICITED_ENABLE,
+					 AC_USRSP_EN | jack->tag);
+}
+EXPORT_SYMBOL_HDA(snd_hda_jack_detect_enable);
+
+/**
+ * snd_hda_jack_report_sync - sync the states of all jacks and report if changed
+ */
+void snd_hda_jack_report_sync(struct hda_codec *codec)
+{
+	struct hda_jack_tbl *jack = codec->jacktbl.list;
+	int i, state;
+
+	for (i = 0; i < codec->jacktbl.used; i++, jack++)
+		if (jack->nid) {
+			jack_detect_update(codec, jack);
+			if (!jack->kctl)
+				continue;
+			state = get_jack_plug_state(jack->pin_sense);
+			snd_kctl_jack_report(codec->bus->card, jack->kctl, state);
+#ifdef CONFIG_SND_HDA_INPUT_JACK
+			if (jack->jack)
+				snd_jack_report(jack->jack,
+						state ? jack->type : 0);
+#endif
+		}
+}
+EXPORT_SYMBOL_HDA(snd_hda_jack_report_sync);
+
+#ifdef CONFIG_SND_HDA_INPUT_JACK
+/* guess the jack type from the pin-config */
+static int get_input_jack_type(struct hda_codec *codec, hda_nid_t nid)
+{
+	unsigned int def_conf = snd_hda_codec_get_pincfg(codec, nid);
+	switch (get_defcfg_device(def_conf)) {
+	case AC_JACK_LINE_OUT:
+	case AC_JACK_SPEAKER:
+		return SND_JACK_LINEOUT;
+	case AC_JACK_HP_OUT:
+		return SND_JACK_HEADPHONE;
+	case AC_JACK_SPDIF_OUT:
+	case AC_JACK_DIG_OTHER_OUT:
+		return SND_JACK_AVOUT;
+	case AC_JACK_MIC_IN:
+		return SND_JACK_MICROPHONE;
+	default:
+		return SND_JACK_LINEIN;
+	}
+}
+
+static void hda_free_jack_priv(struct snd_jack *jack)
+{
+	struct hda_jack_tbl *jacks = jack->private_data;
+	jacks->nid = 0;
+	jacks->jack = NULL;
+}
+#endif
+
+/**
+ * snd_hda_jack_add_kctl - Add a kctl for the given pin
+ *
+ * This assigns a jack-detection kctl to the given pin.  The kcontrol
+ * will have the given name and index.
+ */
+int snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
+			  const char *name, int idx)
+{
+	struct hda_jack_tbl *jack;
+	struct snd_kcontrol *kctl;
+	int err, state;
+
+	jack = snd_hda_jack_tbl_new(codec, nid);
+	if (!jack)
+		return 0;
+	if (jack->kctl)
+		return 0; /* already created */
+	kctl = snd_kctl_jack_new(name, idx, codec);
+	if (!kctl)
+		return -ENOMEM;
+	err = snd_hda_ctl_add(codec, nid, kctl);
+	if (err < 0)
+		return err;
+	jack->kctl = kctl;
+	state = snd_hda_jack_detect(codec, nid);
+	snd_kctl_jack_report(codec->bus->card, kctl, state);
+#ifdef CONFIG_SND_HDA_INPUT_JACK
+	jack->type = get_input_jack_type(codec, nid);
+	err = snd_jack_new(codec->bus->card, name, jack->type, &jack->jack);
+	if (err < 0)
+		return err;
+	jack->jack->private_data = jack;
+	jack->jack->private_free = hda_free_jack_priv;
+	snd_jack_report(jack->jack, state ? jack->type : 0);
+#endif
+	return 0;
+}
+EXPORT_SYMBOL_HDA(snd_hda_jack_add_kctl);
+
+static int add_jack_kctl(struct hda_codec *codec, hda_nid_t nid,
+			 const struct auto_pin_cfg *cfg)
+{
+	unsigned int def_conf, conn;
+	char name[44];
+	int idx, err;
+
+	if (!nid)
+		return 0;
+	if (!is_jack_detectable(codec, nid))
+		return 0;
+	def_conf = snd_hda_codec_get_pincfg(codec, nid);
+	conn = get_defcfg_connect(def_conf);
+	if (conn != AC_JACK_PORT_COMPLEX)
+		return 0;
+
+	snd_hda_get_pin_label(codec, nid, cfg, name, sizeof(name), &idx);
+	err = snd_hda_jack_add_kctl(codec, nid, name, idx);
+	if (err < 0)
+		return err;
+	return snd_hda_jack_detect_enable(codec, nid, 0);
+}
+
+/**
+ * snd_hda_jack_add_kctls - Add kctls for all pins included in the given pincfg
+ */
+int snd_hda_jack_add_kctls(struct hda_codec *codec,
+			   const struct auto_pin_cfg *cfg)
+{
+	const hda_nid_t *p;
+	int i, err;
+
+	for (i = 0, p = cfg->line_out_pins; i < cfg->line_outs; i++, p++) {
+		err = add_jack_kctl(codec, *p, cfg);
+		if (err < 0)
+			return err;
+	}
+	for (i = 0, p = cfg->hp_pins; i < cfg->hp_outs; i++, p++) {
+		if (*p == *cfg->line_out_pins) /* might be duplicated */
+			break;
+		err = add_jack_kctl(codec, *p, cfg);
+		if (err < 0)
+			return err;
+	}
+	for (i = 0, p = cfg->speaker_pins; i < cfg->speaker_outs; i++, p++) {
+		if (*p == *cfg->line_out_pins) /* might be duplicated */
+			break;
+		err = add_jack_kctl(codec, *p, cfg);
+		if (err < 0)
+			return err;
+	}
+	for (i = 0; i < cfg->num_inputs; i++) {
+		err = add_jack_kctl(codec, cfg->inputs[i].pin, cfg);
+		if (err < 0)
+			return err;
+	}
+	for (i = 0, p = cfg->dig_out_pins; i < cfg->dig_outs; i++, p++) {
+		err = add_jack_kctl(codec, *p, cfg);
+		if (err < 0)
+			return err;
+	}
+	err = add_jack_kctl(codec, cfg->dig_in_pin, cfg);
+	if (err < 0)
+		return err;
+	err = add_jack_kctl(codec, cfg->mono_out_pin, cfg);
+	if (err < 0)
+		return err;
+	return 0;
+}
+EXPORT_SYMBOL_HDA(snd_hda_jack_add_kctls);