linux/sound/pci/hda/hda_generic.c
Matt 1a12de1edf [ALSA] hda: fix vref cap and ctl values
HDA Codec driver,HDA generic driver
Fix some vref defines so they are valid for the different bits in
the pin cap and pin control registers. Please apply.

Signed-off-by: Matt <matt@embeddedalley.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2005-05-29 10:00:51 +02:00

907 lines
23 KiB
C

/*
* 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_PINCTL_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;
}