--- /dev/null
+/*
+ * Universal Interface for Intel High Definition Audio Codec
+ *
+ * Generic widget tree parser
+ *
+ * Copyright (c) 2004 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.
+ *
+ * This driver is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <sound/driver.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/pci.h>
+#include <sound/core.h>
+#include "hda_codec.h"
+#include "hda_local.h"
+
+/* widget node for parsing */
+struct hda_gnode {
+ hda_nid_t nid; /* NID of this widget */
+ unsigned short nconns; /* number of input connections */
+ hda_nid_t conn_list[HDA_MAX_CONNECTIONS]; /* input connections */
+ unsigned int wid_caps; /* widget capabilities */
+ unsigned char type; /* widget type */
+ unsigned char pin_ctl; /* pin controls */
+ unsigned char checked; /* the flag indicates that the node is already parsed */
+ unsigned int pin_caps; /* pin widget capabilities */
+ unsigned int def_cfg; /* default configuration */
+ unsigned int amp_out_caps; /* AMP out capabilities */
+ unsigned int amp_in_caps; /* AMP in capabilities */
+ struct list_head list;
+};
+
+/* pathc-specific record */
+struct hda_gspec {
+ struct hda_gnode *dac_node; /* DAC node */
+ struct hda_gnode *out_pin_node; /* Output pin (Line-Out) node */
+ struct hda_gnode *pcm_vol_node; /* Node for PCM volume */
+ unsigned int pcm_vol_index; /* connection of PCM volume */
+
+ struct hda_gnode *adc_node; /* ADC node */
+ struct hda_gnode *cap_vol_node; /* Node for capture volume */
+ unsigned int cur_cap_src; /* current capture source */
+ struct hda_input_mux input_mux;
+ char cap_labels[HDA_MAX_NUM_INPUTS][16];
+
+ unsigned int def_amp_in_caps;
+ unsigned int def_amp_out_caps;
+
+ struct hda_pcm pcm_rec; /* PCM information */
+
+ struct list_head nid_list; /* list of widgets */
+};
+
+/*
+ * retrieve the default device type from the default config value
+ */
+#define get_defcfg_type(node) (((node)->def_cfg & AC_DEFCFG_DEVICE) >> AC_DEFCFG_DEVICE_SHIFT)
+#define get_defcfg_location(node) (((node)->def_cfg & AC_DEFCFG_LOCATION) >> AC_DEFCFG_LOCATION_SHIFT)
+
+/*
+ * destructor
+ */
+static void snd_hda_generic_free(struct hda_codec *codec)
+{
+ struct hda_gspec *spec = codec->spec;
+ struct list_head *p, *n;
+
+ if (! spec)
+ return;
+ /* free all widgets */
+ list_for_each_safe(p, n, &spec->nid_list) {
+ struct hda_gnode *node = list_entry(p, struct hda_gnode, list);
+ kfree(node);
+ }
+ kfree(spec);
+}
+
+
+/*
+ * add a new widget node and read its attributes
+ */
+static int add_new_node(struct hda_codec *codec, struct hda_gspec *spec, hda_nid_t nid)
+{
+ struct hda_gnode *node;
+ int nconns;
+
+ node = kcalloc(1, sizeof(*node), GFP_KERNEL);
+ if (node == NULL)
+ return -ENOMEM;
+ node->nid = nid;
+ nconns = snd_hda_get_connections(codec, nid, node->conn_list, HDA_MAX_CONNECTIONS);
+ if (nconns < 0) {
+ kfree(node);
+ return nconns;
+ }
+ node->nconns = nconns;
+ node->wid_caps = snd_hda_param_read(codec, nid, AC_PAR_AUDIO_WIDGET_CAP);
+ node->type = (node->wid_caps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT;
+
+ if (node->type == AC_WID_PIN) {
+ node->pin_caps = snd_hda_param_read(codec, node->nid, AC_PAR_PIN_CAP);
+ node->pin_ctl = snd_hda_codec_read(codec, node->nid, 0, AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
+ node->def_cfg = snd_hda_codec_read(codec, node->nid, 0, AC_VERB_GET_CONFIG_DEFAULT, 0);
+ }
+
+ if (node->wid_caps & AC_WCAP_OUT_AMP) {
+ if (node->wid_caps & AC_WCAP_AMP_OVRD)
+ node->amp_out_caps = snd_hda_param_read(codec, node->nid, AC_PAR_AMP_OUT_CAP);
+ if (! node->amp_out_caps)
+ node->amp_out_caps = spec->def_amp_out_caps;
+ }
+ if (node->wid_caps & AC_WCAP_IN_AMP) {
+ if (node->wid_caps & AC_WCAP_AMP_OVRD)
+ node->amp_in_caps = snd_hda_param_read(codec, node->nid, AC_PAR_AMP_IN_CAP);
+ if (! node->amp_in_caps)
+ node->amp_in_caps = spec->def_amp_in_caps;
+ }
+ list_add_tail(&node->list, &spec->nid_list);
+ return 0;
+}
+
+/*
+ * build the AFG subtree
+ */
+static int build_afg_tree(struct hda_codec *codec)
+{
+ struct hda_gspec *spec = codec->spec;
+ int i, nodes, err;
+ hda_nid_t nid;
+
+ snd_assert(spec, return -EINVAL);
+
+ spec->def_amp_out_caps = snd_hda_param_read(codec, codec->afg, AC_PAR_AMP_OUT_CAP);
+ spec->def_amp_in_caps = snd_hda_param_read(codec, codec->afg, AC_PAR_AMP_IN_CAP);
+
+ nodes = snd_hda_get_sub_nodes(codec, codec->afg, &nid);
+ if (! nid || nodes < 0) {
+ printk(KERN_ERR "Invalid AFG subtree\n");
+ return -EINVAL;
+ }
+
+ /* parse all nodes belonging to the AFG */
+ for (i = 0; i < nodes; i++, nid++) {
+ if ((err = add_new_node(codec, spec, nid)) < 0)
+ return err;
+ }
+
+ return 0;
+}
+
+
+/*
+ * look for the node record for the given NID
+ */
+/* FIXME: should avoid the braindead linear search */
+static struct hda_gnode *hda_get_node(struct hda_gspec *spec, hda_nid_t nid)
+{
+ struct list_head *p;
+ struct hda_gnode *node;
+
+ list_for_each(p, &spec->nid_list) {
+ node = list_entry(p, struct hda_gnode, list);
+ if (node->nid == nid)
+ return node;
+ }
+ return NULL;
+}
+
+/*
+ * unmute (and set max vol) the output amplifier
+ */
+static int unmute_output(struct hda_codec *codec, struct hda_gnode *node)
+{
+ unsigned int val, ofs;
+ snd_printdd("UNMUTE OUT: NID=0x%x\n", node->nid);
+ val = (node->amp_out_caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT;
+ ofs = (node->amp_out_caps & AC_AMPCAP_OFFSET) >> AC_AMPCAP_OFFSET_SHIFT;
+ if (val >= ofs)
+ val -= ofs;
+ val |= AC_AMP_SET_LEFT | AC_AMP_SET_RIGHT;
+ val |= AC_AMP_SET_OUTPUT;
+ return snd_hda_codec_write(codec, node->nid, 0, AC_VERB_SET_AMP_GAIN_MUTE, val);
+}
+
+/*
+ * unmute (and set max vol) the input amplifier
+ */
+static int unmute_input(struct hda_codec *codec, struct hda_gnode *node, unsigned int index)
+{
+ unsigned int val, ofs;
+ snd_printdd("UNMUTE IN: NID=0x%x IDX=0x%x\n", node->nid, index);
+ val = (node->amp_in_caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT;
+ ofs = (node->amp_in_caps & AC_AMPCAP_OFFSET) >> AC_AMPCAP_OFFSET_SHIFT;
+ if (val >= ofs)
+ val -= ofs;
+ val |= AC_AMP_SET_LEFT | AC_AMP_SET_RIGHT;
+ val |= AC_AMP_SET_INPUT;
+ // awk added - fixed to allow unmuting of indexed amps
+ val |= index << AC_AMP_SET_INDEX_SHIFT;
+ return snd_hda_codec_write(codec, node->nid, 0, AC_VERB_SET_AMP_GAIN_MUTE, val);
+}
+
+/*
+ * select the input connection of the given node.
+ */
+static int select_input_connection(struct hda_codec *codec, struct hda_gnode *node,
+ unsigned int index)
+{
+ snd_printdd("CONNECT: NID=0x%x IDX=0x%x\n", node->nid, index);
+ return snd_hda_codec_write(codec, node->nid, 0, AC_VERB_SET_CONNECT_SEL, index);
+}
+
+/*
+ * clear checked flag of each node in the node list
+ */
+static void clear_check_flags(struct hda_gspec *spec)
+{
+ struct list_head *p;
+ struct hda_gnode *node;
+
+ list_for_each(p, &spec->nid_list) {
+ node = list_entry(p, struct hda_gnode, list);
+ node->checked = 0;
+ }
+}
+
+/*
+ * parse the output path recursively until reach to an audio output widget
+ *
+ * returns 0 if not found, 1 if found, or a negative error code.
+ */
+static int parse_output_path(struct hda_codec *codec, struct hda_gspec *spec,
+ struct hda_gnode *node)
+{
+ int i, err;
+ struct hda_gnode *child;
+
+ if (node->checked)
+ return 0;
+
+ node->checked = 1;
+ if (node->type == AC_WID_AUD_OUT) {
+ if (node->wid_caps & AC_WCAP_DIGITAL) {
+ snd_printdd("Skip Digital OUT node %x\n", node->nid);
+ return 0;
+ }
+ snd_printdd("AUD_OUT found %x\n", node->nid);
+ if (spec->dac_node) {
+ /* already DAC node is assigned, just unmute & connect */
+ return node == spec->dac_node;
+ }
+ spec->dac_node = node;
+ if (node->wid_caps & AC_WCAP_OUT_AMP) {
+ spec->pcm_vol_node = node;
+ spec->pcm_vol_index = 0;
+ }
+ return 1; /* found */
+ }
+
+ for (i = 0; i < node->nconns; i++) {
+ child = hda_get_node(spec, node->conn_list[i]);
+ if (! child)
+ continue;
+ err = parse_output_path(codec, spec, child);
+ if (err < 0)
+ return err;
+ else if (err > 0) {
+ /* found one,
+ * select the path, unmute both input and output
+ */
+ if (node->nconns > 1)
+ select_input_connection(codec, node, i);
+ unmute_input(codec, node, i);
+ unmute_output(codec, node);
+ if (! spec->pcm_vol_node) {
+ if (node->wid_caps & AC_WCAP_IN_AMP) {
+ spec->pcm_vol_node = node;
+ spec->pcm_vol_index = i;
+ } else if (node->wid_caps & AC_WCAP_OUT_AMP) {
+ spec->pcm_vol_node = node;
+ spec->pcm_vol_index = 0;
+ }
+ }
+ return 1;
+ }
+ }
+ return 0;
+}
+
+/*
+ * Look for the output PIN widget with the given jack type
+ * and parse the output path to that PIN.
+ *
+ * Returns the PIN node when the path to DAC is established.
+ */
+static struct hda_gnode *parse_output_jack(struct hda_codec *codec,
+ struct hda_gspec *spec,
+ int jack_type)
+{
+ struct list_head *p;
+ struct hda_gnode *node;
+ int err;
+
+ list_for_each(p, &spec->nid_list) {
+ node = list_entry(p, struct hda_gnode, list);
+ if (node->type != AC_WID_PIN)
+ continue;
+ /* output capable? */
+ if (! (node->pin_caps & AC_PINCAP_OUT))
+ continue;
+ if (jack_type >= 0) {
+ if (jack_type != get_defcfg_type(node))
+ continue;
+ if (node->wid_caps & AC_WCAP_DIGITAL)
+ continue; /* skip SPDIF */
+ } else {
+ /* output as default? */
+ if (! (node->pin_ctl & AC_PINCTL_OUT_EN))
+ continue;
+ }
+ clear_check_flags(spec);
+ err = parse_output_path(codec, spec, node);
+ if (err < 0)
+ return NULL;
+ else if (err > 0) {
+ /* unmute the PIN output */
+ unmute_output(codec, node);
+ /* set PIN-Out enable */
+ snd_hda_codec_write(codec, node->nid, 0,
+ AC_VERB_SET_PIN_WIDGET_CONTROL,
+ AC_PINCTL_OUT_EN | AC_PINCTL_HP_EN);
+ return node;
+ }
+ }
+ return NULL;
+}
+
+
+/*
+ * parse outputs
+ */
+static int parse_output(struct hda_codec *codec)
+{
+ struct hda_gspec *spec = codec->spec;
+ struct hda_gnode *node;
+
+ /*
+ * Look for the output PIN widget
+ */
+ /* first, look for the line-out pin */
+ node = parse_output_jack(codec, spec, AC_JACK_LINE_OUT);
+ if (node) /* found, remember the PIN node */
+ spec->out_pin_node = node;
+ /* look for the HP-out pin */
+ node = parse_output_jack(codec, spec, AC_JACK_HP_OUT);
+ if (node) {
+ if (! spec->out_pin_node)
+ spec->out_pin_node = node;
+ }
+
+ if (! spec->out_pin_node) {
+ /* no line-out or HP pins found,
+ * then choose for the first output pin
+ */
+ spec->out_pin_node = parse_output_jack(codec, spec, -1);
+ if (! spec->out_pin_node)
+ snd_printd("hda_generic: no proper output path found\n");
+ }
+
+ return 0;
+}
+
+/*
+ * input MUX
+ */
+
+/* control callbacks */
+static int capture_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
+{
+ struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct hda_gspec *spec = codec->spec;
+ return snd_hda_input_mux_info(&spec->input_mux, uinfo);
+}
+
+static int capture_source_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
+{
+ struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct hda_gspec *spec = codec->spec;
+
+ ucontrol->value.enumerated.item[0] = spec->cur_cap_src;
+ return 0;
+}
+
+static int capture_source_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
+{
+ struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct hda_gspec *spec = codec->spec;
+ return snd_hda_input_mux_put(codec, &spec->input_mux, ucontrol,
+ spec->adc_node->nid, &spec->cur_cap_src);
+}
+
+/*
+ * return the string name of the given input PIN widget
+ */
+static const char *get_input_type(struct hda_gnode *node, unsigned int *pinctl)
+{
+ unsigned int location = get_defcfg_location(node);
+ switch (get_defcfg_type(node)) {
+ case AC_JACK_LINE_IN:
+ if ((location & 0x0f) == AC_JACK_LOC_FRONT)
+ return "Front Line";
+ return "Line";
+ case AC_JACK_CD:
+ if (pinctl)
+ *pinctl |= AC_PIN_VREF_GRD;
+ return "CD";
+ case AC_JACK_AUX:
+ if ((location & 0x0f) == AC_JACK_LOC_FRONT)
+ return "Front Aux";
+ return "Aux";
+ case AC_JACK_MIC_IN:
+ if ((location & 0x0f) == AC_JACK_LOC_FRONT)
+ return "Front Mic";
+ return "Mic";
+ case AC_JACK_SPDIF_IN:
+ return "SPDIF";
+ case AC_JACK_DIG_OTHER_IN:
+ return "Digital";
+ }
+ return NULL;
+}
+
+/*
+ * parse the nodes recursively until reach to the input PIN
+ *
+ * returns 0 if not found, 1 if found, or a negative error code.
+ */
+static int parse_adc_sub_nodes(struct hda_codec *codec, struct hda_gspec *spec,
+ struct hda_gnode *node)
+{
+ int i, err;
+ unsigned int pinctl;
+ char *label;
+ const char *type;
+
+ if (node->checked)
+ return 0;
+
+ node->checked = 1;
+ if (node->type != AC_WID_PIN) {
+ for (i = 0; i < node->nconns; i++) {
+ struct hda_gnode *child;
+ child = hda_get_node(spec, node->conn_list[i]);
+ if (! child)
+ continue;
+ err = parse_adc_sub_nodes(codec, spec, child);
+ if (err < 0)
+ return err;
+ if (err > 0) {
+ /* found one,
+ * select the path, unmute both input and output
+ */
+ if (node->nconns > 1)
+ select_input_connection(codec, node, i);
+ unmute_input(codec, node, i);
+ unmute_output(codec, node);
+ return err;
+ }
+ }
+ return 0;
+ }
+
+ /* input capable? */
+ if (! (node->pin_caps & AC_PINCAP_IN))
+ return 0;
+
+ if (node->wid_caps & AC_WCAP_DIGITAL)
+ return 0; /* skip SPDIF */
+
+ if (spec->input_mux.num_items >= HDA_MAX_NUM_INPUTS) {
+ snd_printk(KERN_ERR "hda_generic: Too many items for capture\n");
+ return -EINVAL;
+ }
+
+ pinctl = AC_PINCTL_IN_EN;
+ /* create a proper capture source label */
+ type = get_input_type(node, &pinctl);
+ if (! type) {
+ /* input as default? */
+ if (! (node->pin_ctl & AC_PINCTL_IN_EN))
+ return 0;
+ type = "Input";
+ }
+ label = spec->cap_labels[spec->input_mux.num_items];
+ strcpy(label, type);
+ spec->input_mux.items[spec->input_mux.num_items].label = label;
+
+ /* unmute the PIN external input */
+ unmute_input(codec, node, 0); /* index = 0? */
+ /* set PIN-In enable */
+ snd_hda_codec_write(codec, node->nid, 0, AC_VERB_SET_PIN_WIDGET_CONTROL, pinctl);
+
+ return 1; /* found */
+}
+
+/*
+ * parse input
+ */
+static int parse_input_path(struct hda_codec *codec, struct hda_gnode *adc_node)
+{
+ struct hda_gspec *spec = codec->spec;
+ struct hda_gnode *node;
+ int i, err;
+
+ snd_printdd("AUD_IN = %x\n", adc_node->nid);
+ clear_check_flags(spec);
+
+ // awk added - fixed no recording due to muted widget
+ unmute_input(codec, adc_node, 0);
+
+ /*
+ * check each connection of the ADC
+ * if it reaches to a proper input PIN, add the path as the
+ * input path.
+ */
+ for (i = 0; i < adc_node->nconns; i++) {
+ node = hda_get_node(spec, adc_node->conn_list[i]);
+ if (! node)
+ continue;
+ err = parse_adc_sub_nodes(codec, spec, node);
+ if (err < 0)
+ return err;
+ else if (err > 0) {
+ struct hda_input_mux_item *csrc = &spec->input_mux.items[spec->input_mux.num_items];
+ char *buf = spec->cap_labels[spec->input_mux.num_items];
+ int ocap;
+ for (ocap = 0; ocap < spec->input_mux.num_items; ocap++) {
+ if (! strcmp(buf, spec->cap_labels[ocap])) {
+ /* same label already exists,
+ * put the index number to be unique
+ */
+ sprintf(buf, "%s %d", spec->cap_labels[ocap],
+ spec->input_mux.num_items);
+ }
+ }
+ csrc->index = i;
+ spec->input_mux.num_items++;
+ }
+ }
+
+ if (! spec->input_mux.num_items)
+ return 0; /* no input path found... */
+
+ snd_printdd("[Capture Source] NID=0x%x, #SRC=%d\n", adc_node->nid, spec->input_mux.num_items);
+ for (i = 0; i < spec->input_mux.num_items; i++)
+ snd_printdd(" [%s] IDX=0x%x\n", spec->input_mux.items[i].label,
+ spec->input_mux.items[i].index);
+
+ spec->adc_node = adc_node;
+ return 1;
+}
+
+/*
+ * parse input
+ */
+static int parse_input(struct hda_codec *codec)
+{
+ struct hda_gspec *spec = codec->spec;
+ struct list_head *p;
+ struct hda_gnode *node;
+ int err;
+
+ /*
+ * At first we look for an audio input widget.
+ * If it reaches to certain input PINs, we take it as the
+ * input path.
+ */
+ list_for_each(p, &spec->nid_list) {
+ node = list_entry(p, struct hda_gnode, list);
+ if (node->wid_caps & AC_WCAP_DIGITAL)
+ continue; /* skip SPDIF */
+ if (node->type == AC_WID_AUD_IN) {
+ err = parse_input_path(codec, node);
+ if (err < 0)
+ return err;
+ else if (err > 0)
+ return 0;
+ }
+ }
+ snd_printd("hda_generic: no proper input path found\n");
+ return 0;
+}
+
+/*
+ * create mixer controls if possible
+ */
+#define DIR_OUT 0x1
+#define DIR_IN 0x2
+
+static int create_mixer(struct hda_codec *codec, struct hda_gnode *node,
+ unsigned int index, const char *type, const char *dir_sfx)
+{
+ char name[32];
+ int err;
+ int created = 0;
+ snd_kcontrol_new_t knew;
+
+ if (type)
+ sprintf(name, "%s %s Switch", type, dir_sfx);
+ else
+ sprintf(name, "%s Switch", dir_sfx);
+ if ((node->wid_caps & AC_WCAP_IN_AMP) &&
+ (node->amp_in_caps & AC_AMPCAP_MUTE)) {
+ knew = (snd_kcontrol_new_t)HDA_CODEC_MUTE(name, node->nid, index, HDA_INPUT);
+ snd_printdd("[%s] NID=0x%x, DIR=IN, IDX=0x%x\n", name, node->nid, index);
+ if ((err = snd_ctl_add(codec->bus->card, snd_ctl_new1(&knew, codec))) < 0)
+ return err;
+ created = 1;
+ } else if ((node->wid_caps & AC_WCAP_OUT_AMP) &&
+ (node->amp_out_caps & AC_AMPCAP_MUTE)) {
+ knew = (snd_kcontrol_new_t)HDA_CODEC_MUTE(name, node->nid, 0, HDA_OUTPUT);
+ snd_printdd("[%s] NID=0x%x, DIR=OUT\n", name, node->nid);
+ if ((err = snd_ctl_add(codec->bus->card, snd_ctl_new1(&knew, codec))) < 0)
+ return err;
+ created = 1;
+ }
+
+ if (type)
+ sprintf(name, "%s %s Volume", type, dir_sfx);
+ else
+ sprintf(name, "%s Volume", dir_sfx);
+ if ((node->wid_caps & AC_WCAP_IN_AMP) &&
+ (node->amp_in_caps & AC_AMPCAP_NUM_STEPS)) {
+ knew = (snd_kcontrol_new_t)HDA_CODEC_VOLUME(name, node->nid, index, HDA_INPUT);
+ snd_printdd("[%s] NID=0x%x, DIR=IN, IDX=0x%x\n", name, node->nid, index);
+ if ((err = snd_ctl_add(codec->bus->card, snd_ctl_new1(&knew, codec))) < 0)
+ return err;
+ created = 1;
+ } else if ((node->wid_caps & AC_WCAP_OUT_AMP) &&
+ (node->amp_out_caps & AC_AMPCAP_NUM_STEPS)) {
+ knew = (snd_kcontrol_new_t)HDA_CODEC_VOLUME(name, node->nid, 0, HDA_OUTPUT);
+ snd_printdd("[%s] NID=0x%x, DIR=OUT\n", name, node->nid);
+ if ((err = snd_ctl_add(codec->bus->card, snd_ctl_new1(&knew, codec))) < 0)
+ return err;
+ created = 1;
+ }
+
+ return created;
+}
+
+/*
+ * check whether the controls with the given name and direction suffix already exist
+ */
+static int check_existing_control(struct hda_codec *codec, const char *type, const char *dir)
+{
+ snd_ctl_elem_id_t id;
+ memset(&id, 0, sizeof(id));
+ sprintf(id.name, "%s %s Volume", type, dir);
+ id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
+ if (snd_ctl_find_id(codec->bus->card, &id))
+ return 1;
+ sprintf(id.name, "%s %s Switch", type, dir);
+ id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
+ if (snd_ctl_find_id(codec->bus->card, &id))
+ return 1;
+ return 0;
+}
+
+/*
+ * build output mixer controls
+ */
+static int build_output_controls(struct hda_codec *codec)
+{
+ struct hda_gspec *spec = codec->spec;
+ int err;
+
+ err = create_mixer(codec, spec->pcm_vol_node, spec->pcm_vol_index,
+ "PCM", "Playback");
+ if (err < 0)
+ return err;
+ return 0;
+}
+
+/* create capture volume/switch */
+static int build_input_controls(struct hda_codec *codec)
+{
+ struct hda_gspec *spec = codec->spec;
+ struct hda_gnode *adc_node = spec->adc_node;
+ int err;
+
+ if (! adc_node)
+ return 0; /* not found */
+
+ /* create capture volume and switch controls if the ADC has an amp */
+ err = create_mixer(codec, adc_node, 0, NULL, "Capture");
+
+ /* create input MUX if multiple sources are available */
+ if (spec->input_mux.num_items > 1) {
+ static snd_kcontrol_new_t cap_sel = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Capture Source",
+ .info = capture_source_info,
+ .get = capture_source_get,
+ .put = capture_source_put,
+ };
+ if ((err = snd_ctl_add(codec->bus->card, snd_ctl_new1(&cap_sel, codec))) < 0)
+ return err;
+ spec->cur_cap_src = 0;
+ select_input_connection(codec, adc_node, spec->input_mux.items[0].index);
+ }
+ return 0;
+}
+
+
+/*
+ * parse the nodes recursively until reach to the output PIN.
+ *
+ * returns 0 - if not found,
+ * 1 - if found, but no mixer is created
+ * 2 - if found and mixer was already created, (just skip)
+ * a negative error code
+ */
+static int parse_loopback_path(struct hda_codec *codec, struct hda_gspec *spec,
+ struct hda_gnode *node, struct hda_gnode *dest_node,
+ const char *type)
+{
+ int i, err;
+
+ if (node->checked)
+ return 0;
+
+ node->checked = 1;
+ if (node == dest_node) {
+ /* loopback connection found */
+ return 1;
+ }
+
+ for (i = 0; i < node->nconns; i++) {
+ struct hda_gnode *child = hda_get_node(spec, node->conn_list[i]);
+ if (! child)
+ continue;
+ err = parse_loopback_path(codec, spec, child, dest_node, type);
+ if (err < 0)
+ return err;
+ else if (err >= 1) {
+ if (err == 1) {
+ err = create_mixer(codec, node, i, type, "Playback");
+ if (err < 0)
+ return err;
+ if (err > 0)
+ return 2; /* ok, created */
+ /* not created, maybe in the lower path */
+ err = 1;
+ }
+ /* connect and unmute */
+ if (node->nconns > 1)
+ select_input_connection(codec, node, i);
+ unmute_input(codec, node, i);
+ unmute_output(codec, node);
+ return err;
+ }
+ }
+ return 0;
+}
+
+/*
+ * parse the tree and build the loopback controls
+ */
+static int build_loopback_controls(struct hda_codec *codec)
+{
+ struct hda_gspec *spec = codec->spec;
+ struct list_head *p;
+ struct hda_gnode *node;
+ int err;
+ const char *type;
+
+ if (! spec->out_pin_node)
+ return 0;
+
+ list_for_each(p, &spec->nid_list) {
+ node = list_entry(p, struct hda_gnode, list);
+ if (node->type != AC_WID_PIN)
+ continue;
+ /* input capable? */
+ if (! (node->pin_caps & AC_PINCAP_IN))
+ return 0;
+ type = get_input_type(node, NULL);
+ if (type) {
+ if (check_existing_control(codec, type, "Playback"))
+ continue;
+ clear_check_flags(spec);
+ err = parse_loopback_path(codec, spec, spec->out_pin_node,
+ node, type);
+ if (err < 0)
+ return err;
+ if (! err)
+ continue;
+ }
+ }
+ return 0;
+}
+
+/*
+ * build mixer controls
+ */
+static int build_generic_controls(struct hda_codec *codec)
+{
+ int err;
+
+ if ((err = build_input_controls(codec)) < 0 ||
+ (err = build_output_controls(codec)) < 0 ||
+ (err = build_loopback_controls(codec)) < 0)
+ return err;
+
+ return 0;
+}
+
+/*
+ * PCM
+ */
+static struct hda_pcm_stream generic_pcm_playback = {
+ .substreams = 1,
+ .channels_min = 2,
+ .channels_max = 2,
+};
+
+static int build_generic_pcms(struct hda_codec *codec)
+{
+ struct hda_gspec *spec = codec->spec;
+ struct hda_pcm *info = &spec->pcm_rec;
+
+ if (! spec->dac_node && ! spec->adc_node) {
+ snd_printd("hda_generic: no PCM found\n");
+ return 0;
+ }
+
+ codec->num_pcms = 1;
+ codec->pcm_info = info;
+
+ info->name = "HDA Generic";
+ if (spec->dac_node) {
+ info->stream[0] = generic_pcm_playback;
+ info->stream[0].nid = spec->dac_node->nid;
+ }
+ if (spec->adc_node) {
+ info->stream[1] = generic_pcm_playback;
+ info->stream[1].nid = spec->adc_node->nid;
+ }
+
+ return 0;
+}
+
+
+/*
+ */
+static struct hda_codec_ops generic_patch_ops = {
+ .build_controls = build_generic_controls,
+ .build_pcms = build_generic_pcms,
+ .free = snd_hda_generic_free,
+};
+
+/*
+ * the generic parser
+ */
+int snd_hda_parse_generic_codec(struct hda_codec *codec)
+{
+ struct hda_gspec *spec;
+ int err;
+
+ spec = kcalloc(1, sizeof(*spec), GFP_KERNEL);
+ if (spec == NULL) {
+ printk(KERN_ERR "hda_generic: can't allocate spec\n");
+ return -ENOMEM;
+ }
+ codec->spec = spec;
+ INIT_LIST_HEAD(&spec->nid_list);
+
+ if ((err = build_afg_tree(codec)) < 0)
+ goto error;
+
+ if ((err = parse_input(codec)) < 0 ||
+ (err = parse_output(codec)) < 0)
+ goto error;
+
+ codec->patch_ops = generic_patch_ops;
+
+ return 0;
+
+ error:
+ snd_hda_generic_free(codec);
+ return err;
+}
git://git.onelab.eu / linux-2.6.git / blobdiff