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Diffstat (limited to 'sound/usb/mixer.c')
-rw-r--r--sound/usb/mixer.c411
1 files changed, 247 insertions, 164 deletions
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index d40a2850e270..0b728d886f0d 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -162,7 +162,7 @@ static int check_mapped_selector_name(struct mixer_build *state, int unitid,
{
const struct usbmix_selector_map *p;
- if (! state->selector_map)
+ if (!state->selector_map)
return 0;
for (p = state->selector_map; p->id; p++) {
if (p->id == unitid && index < p->count)
@@ -174,7 +174,8 @@ static int check_mapped_selector_name(struct mixer_build *state, int unitid,
/*
* find an audio control unit with the given unit id
*/
-static void *find_audio_control_unit(struct mixer_build *state, unsigned char unit)
+static void *find_audio_control_unit(struct mixer_build *state,
+ unsigned char unit)
{
/* we just parse the header */
struct uac_feature_unit_descriptor *hdr = NULL;
@@ -194,7 +195,8 @@ static void *find_audio_control_unit(struct mixer_build *state, unsigned char un
/*
* copy a string with the given id
*/
-static int snd_usb_copy_string_desc(struct mixer_build *state, int index, char *buf, int maxlen)
+static int snd_usb_copy_string_desc(struct mixer_build *state,
+ int index, char *buf, int maxlen)
{
int len = usb_string(state->chip->dev, index, buf, maxlen - 1);
buf[len] = 0;
@@ -253,7 +255,7 @@ static int convert_bytes_value(struct usb_mixer_elem_info *cval, int val)
static int get_relative_value(struct usb_mixer_elem_info *cval, int val)
{
- if (! cval->res)
+ if (!cval->res)
cval->res = 1;
if (val < cval->min)
return 0;
@@ -267,7 +269,7 @@ static int get_abs_value(struct usb_mixer_elem_info *cval, int val)
{
if (val < 0)
return cval->min;
- if (! cval->res)
+ if (!cval->res)
cval->res = 1;
val *= cval->res;
val += cval->min;
@@ -281,7 +283,8 @@ static int get_abs_value(struct usb_mixer_elem_info *cval, int val)
* retrieve a mixer value
*/
-static int get_ctl_value_v1(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret)
+static int get_ctl_value_v1(struct usb_mixer_elem_info *cval, int request,
+ int validx, int *value_ret)
{
struct snd_usb_audio *chip = cval->mixer->chip;
unsigned char buf[2];
@@ -292,6 +295,7 @@ static int get_ctl_value_v1(struct usb_mixer_elem_info *cval, int request, int v
err = snd_usb_autoresume(cval->mixer->chip);
if (err < 0)
return -EIO;
+
down_read(&chip->shutdown_rwsem);
while (timeout-- > 0) {
if (chip->shutdown)
@@ -316,10 +320,11 @@ static int get_ctl_value_v1(struct usb_mixer_elem_info *cval, int request, int v
return err;
}
-static int get_ctl_value_v2(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret)
+static int get_ctl_value_v2(struct usb_mixer_elem_info *cval, int request,
+ int validx, int *value_ret)
{
struct snd_usb_audio *chip = cval->mixer->chip;
- unsigned char buf[2 + 3*sizeof(__u16)]; /* enough space for one range */
+ unsigned char buf[2 + 3 * sizeof(__u16)]; /* enough space for one range */
unsigned char *val;
int idx = 0, ret, size;
__u8 bRequest;
@@ -339,9 +344,9 @@ static int get_ctl_value_v2(struct usb_mixer_elem_info *cval, int request, int v
goto error;
down_read(&chip->shutdown_rwsem);
- if (chip->shutdown)
+ if (chip->shutdown) {
ret = -ENODEV;
- else {
+ } else {
idx = snd_usb_ctrl_intf(chip) | (cval->id << 8);
ret = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), bRequest,
USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
@@ -382,7 +387,8 @@ error:
return 0;
}
-static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret)
+static int get_ctl_value(struct usb_mixer_elem_info *cval, int request,
+ int validx, int *value_ret)
{
validx += cval->idx_off;
@@ -391,7 +397,8 @@ static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int vali
get_ctl_value_v2(cval, request, validx, value_ret);
}
-static int get_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int *value)
+static int get_cur_ctl_value(struct usb_mixer_elem_info *cval,
+ int validx, int *value)
{
return get_ctl_value(cval, UAC_GET_CUR, validx, value);
}
@@ -400,7 +407,9 @@ static int get_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int *
static inline int get_cur_mix_raw(struct usb_mixer_elem_info *cval,
int channel, int *value)
{
- return get_ctl_value(cval, UAC_GET_CUR, (cval->control << 8) | channel, value);
+ return get_ctl_value(cval, UAC_GET_CUR,
+ (cval->control << 8) | channel,
+ value);
}
static int get_cur_mix_value(struct usb_mixer_elem_info *cval,
@@ -417,7 +426,7 @@ static int get_cur_mix_value(struct usb_mixer_elem_info *cval,
if (!cval->mixer->ignore_ctl_error)
usb_audio_dbg(cval->mixer->chip,
"cannot get current value for control %d ch %d: err = %d\n",
- cval->control, channel, err);
+ cval->control, channel, err);
return err;
}
cval->cached |= 1 << channel;
@@ -425,7 +434,6 @@ static int get_cur_mix_value(struct usb_mixer_elem_info *cval,
return 0;
}
-
/*
* set a mixer value
*/
@@ -474,7 +482,7 @@ int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
}
}
usb_audio_dbg(chip, "cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n",
- request, validx, idx, cval->val_type, buf[0], buf[1]);
+ request, validx, idx, cval->val_type, buf[0], buf[1]);
err = -EINVAL;
out:
@@ -483,7 +491,8 @@ int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
return err;
}
-static int set_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int value)
+static int set_cur_ctl_value(struct usb_mixer_elem_info *cval,
+ int validx, int value)
{
return snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR, validx, value);
}
@@ -503,8 +512,9 @@ static int set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel,
return 0;
}
- err = snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR, (cval->control << 8) | channel,
- value);
+ err = snd_usb_mixer_set_ctl_value(cval,
+ UAC_SET_CUR, (cval->control << 8) | channel,
+ value);
if (err < 0)
return err;
cval->cached |= 1 << channel;
@@ -541,13 +551,13 @@ static int parse_audio_unit(struct mixer_build *state, int unitid);
* check if the input/output channel routing is enabled on the given bitmap.
* used for mixer unit parser
*/
-static int check_matrix_bitmap(unsigned char *bmap, int ich, int och, int num_outs)
+static int check_matrix_bitmap(unsigned char *bmap,
+ int ich, int och, int num_outs)
{
int idx = ich * num_outs + och;
return bmap[idx >> 3] & (0x80 >> (idx & 7));
}
-
/*
* add an alsa control element
* search and increment the index until an empty slot is found.
@@ -564,7 +574,8 @@ int snd_usb_mixer_add_control(struct usb_mixer_interface *mixer,
while (snd_ctl_find_id(mixer->chip->card, &kctl->id))
kctl->id.index++;
if ((err = snd_ctl_add(mixer->chip->card, kctl)) < 0) {
- usb_audio_dbg(mixer->chip, "cannot add control (err = %d)\n", err);
+ usb_audio_dbg(mixer->chip, "cannot add control (err = %d)\n",
+ err);
return err;
}
cval->elem_id = &kctl->id;
@@ -573,7 +584,6 @@ int snd_usb_mixer_add_control(struct usb_mixer_interface *mixer,
return 0;
}
-
/*
* get a terminal name string
*/
@@ -627,7 +637,8 @@ static int get_term_name(struct mixer_build *state, struct usb_audio_term *iterm
struct iterm_name_combo *names;
if (iterm->name)
- return snd_usb_copy_string_desc(state, iterm->name, name, maxlen);
+ return snd_usb_copy_string_desc(state, iterm->name,
+ name, maxlen);
/* virtual type - not a real terminal */
if (iterm->type >> 16) {
@@ -635,13 +646,17 @@ static int get_term_name(struct mixer_build *state, struct usb_audio_term *iterm
return 0;
switch (iterm->type >> 16) {
case UAC_SELECTOR_UNIT:
- strcpy(name, "Selector"); return 8;
+ strcpy(name, "Selector");
+ return 8;
case UAC1_PROCESSING_UNIT:
- strcpy(name, "Process Unit"); return 12;
+ strcpy(name, "Process Unit");
+ return 12;
case UAC1_EXTENSION_UNIT:
- strcpy(name, "Ext Unit"); return 8;
+ strcpy(name, "Ext Unit");
+ return 8;
case UAC_MIXER_UNIT:
- strcpy(name, "Mixer"); return 5;
+ strcpy(name, "Mixer");
+ return 5;
default:
return sprintf(name, "Unit %d", iterm->id);
}
@@ -649,29 +664,35 @@ static int get_term_name(struct mixer_build *state, struct usb_audio_term *iterm
switch (iterm->type & 0xff00) {
case 0x0100:
- strcpy(name, "PCM"); return 3;
+ strcpy(name, "PCM");
+ return 3;
case 0x0200:
- strcpy(name, "Mic"); return 3;
+ strcpy(name, "Mic");
+ return 3;
case 0x0400:
- strcpy(name, "Headset"); return 7;
+ strcpy(name, "Headset");
+ return 7;
case 0x0500:
- strcpy(name, "Phone"); return 5;
+ strcpy(name, "Phone");
+ return 5;
}
- for (names = iterm_names; names->type; names++)
+ for (names = iterm_names; names->type; names++) {
if (names->type == iterm->type) {
strcpy(name, names->name);
return strlen(names->name);
}
+ }
+
return 0;
}
-
/*
* parse the source unit recursively until it reaches to a terminal
* or a branched unit.
*/
-static int check_input_term(struct mixer_build *state, int id, struct usb_audio_term *term)
+static int check_input_term(struct mixer_build *state, int id,
+ struct usb_audio_term *term)
{
int err;
void *p1;
@@ -766,7 +787,6 @@ static int check_input_term(struct mixer_build *state, int id, struct usb_audio_
return -ENODEV;
}
-
/*
* Feature Unit
*/
@@ -794,7 +814,6 @@ static struct usb_feature_control_info audio_feature_info[] = {
{ "Phase Inverter Control", USB_MIXER_BOOLEAN },
};
-
/* private_free callback */
static void usb_mixer_elem_free(struct snd_kcontrol *kctl)
{
@@ -802,7 +821,6 @@ static void usb_mixer_elem_free(struct snd_kcontrol *kctl)
kctl->private_data = NULL;
}
-
/*
* interface to ALSA control for feature/mixer units
*/
@@ -906,7 +924,6 @@ static void volume_control_quirks(struct usb_mixer_elem_info *cval,
cval->res = 384;
}
break;
-
}
}
@@ -939,21 +956,26 @@ static int get_min_max_with_quirks(struct usb_mixer_elem_info *cval,
get_ctl_value(cval, UAC_GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) {
usb_audio_err(cval->mixer->chip,
"%d:%d: cannot get min/max values for control %d (id %d)\n",
- cval->id, snd_usb_ctrl_intf(cval->mixer->chip), cval->control, cval->id);
+ cval->id, snd_usb_ctrl_intf(cval->mixer->chip),
+ cval->control, cval->id);
return -EINVAL;
}
- if (get_ctl_value(cval, UAC_GET_RES, (cval->control << 8) | minchn, &cval->res) < 0) {
+ if (get_ctl_value(cval, UAC_GET_RES,
+ (cval->control << 8) | minchn,
+ &cval->res) < 0) {
cval->res = 1;
} else {
int last_valid_res = cval->res;
while (cval->res > 1) {
if (snd_usb_mixer_set_ctl_value(cval, UAC_SET_RES,
- (cval->control << 8) | minchn, cval->res / 2) < 0)
+ (cval->control << 8) | minchn,
+ cval->res / 2) < 0)
break;
cval->res /= 2;
}
- if (get_ctl_value(cval, UAC_GET_RES, (cval->control << 8) | minchn, &cval->res) < 0)
+ if (get_ctl_value(cval, UAC_GET_RES,
+ (cval->control << 8) | minchn, &cval->res) < 0)
cval->res = last_valid_res;
}
if (cval->res == 0)
@@ -1017,7 +1039,8 @@ static int get_min_max_with_quirks(struct usb_mixer_elem_info *cval,
#define get_min_max(cval, def) get_min_max_with_quirks(cval, def, NULL)
/* get a feature/mixer unit info */
-static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
+static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
{
struct usb_mixer_elem_info *cval = kcontrol->private_data;
@@ -1051,7 +1074,8 @@ static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol, struct snd_ctl_
}
/* get the current value from feature/mixer unit */
-static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
{
struct usb_mixer_elem_info *cval = kcontrol->private_data;
int c, cnt, val, err;
@@ -1082,7 +1106,8 @@ static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol, struct snd_ctl_e
}
/* put the current value to feature/mixer unit */
-static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
{
struct usb_mixer_elem_info *cval = kcontrol->private_data;
int c, cnt, val, oval, err;
@@ -1136,22 +1161,25 @@ static struct snd_kcontrol_new usb_feature_unit_ctl_ro = {
.put = NULL,
};
-/* This symbol is exported in order to allow the mixer quirks to
- * hook up to the standard feature unit control mechanism */
+/*
+ * This symbol is exported in order to allow the mixer quirks to
+ * hook up to the standard feature unit control mechanism
+ */
struct snd_kcontrol_new *snd_usb_feature_unit_ctl = &usb_feature_unit_ctl;
/*
* build a feature control
*/
-
static size_t append_ctl_name(struct snd_kcontrol *kctl, const char *str)
{
return strlcat(kctl->id.name, str, sizeof(kctl->id.name));
}
-/* A lot of headsets/headphones have a "Speaker" mixer. Make sure we
- rename it to "Headphone". We determine if something is a headphone
- similar to how udev determines form factor. */
+/*
+ * A lot of headsets/headphones have a "Speaker" mixer. Make sure we
+ * rename it to "Headphone". We determine if something is a headphone
+ * similar to how udev determines form factor.
+ */
static void check_no_speaker_on_headset(struct snd_kcontrol *kctl,
struct snd_card *card)
{
@@ -1201,10 +1229,8 @@ static void build_feature_ctl(struct mixer_build *state, void *raw_desc,
return;
cval = kzalloc(sizeof(*cval), GFP_KERNEL);
- if (! cval) {
- usb_audio_err(state->chip, "cannot malloc kcontrol\n");
+ if (!cval)
return;
- }
cval->mixer = state->mixer;
cval->id = unitid;
cval->control = control;
@@ -1222,15 +1248,17 @@ static void build_feature_ctl(struct mixer_build *state, void *raw_desc,
cval->ch_readonly = readonly_mask;
}
- /* if all channels in the mask are marked read-only, make the control
+ /*
+ * If all channels in the mask are marked read-only, make the control
* read-only. set_cur_mix_value() will check the mask again and won't
- * issue write commands to read-only channels. */
+ * issue write commands to read-only channels.
+ */
if (cval->channels == readonly_mask)
kctl = snd_ctl_new1(&usb_feature_unit_ctl_ro, cval);
else
kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
- if (! kctl) {
+ if (!kctl) {
usb_audio_err(state->chip, "cannot malloc kcontrol\n");
kfree(cval);
return;
@@ -1239,48 +1267,53 @@ static void build_feature_ctl(struct mixer_build *state, void *raw_desc,
len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name));
mapped_name = len != 0;
- if (! len && nameid)
+ if (!len && nameid)
len = snd_usb_copy_string_desc(state, nameid,
kctl->id.name, sizeof(kctl->id.name));
switch (control) {
case UAC_FU_MUTE:
case UAC_FU_VOLUME:
- /* determine the control name. the rule is:
+ /*
+ * determine the control name. the rule is:
* - if a name id is given in descriptor, use it.
* - if the connected input can be determined, then use the name
* of terminal type.
* - if the connected output can be determined, use it.
* - otherwise, anonymous name.
*/
- if (! len) {
- len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 1);
- if (! len)
- len = get_term_name(state, &state->oterm, kctl->id.name, sizeof(kctl->id.name), 1);
- if (! len)
- len = snprintf(kctl->id.name, sizeof(kctl->id.name),
+ if (!len) {
+ len = get_term_name(state, iterm, kctl->id.name,
+ sizeof(kctl->id.name), 1);
+ if (!len)
+ len = get_term_name(state, &state->oterm,
+ kctl->id.name,
+ sizeof(kctl->id.name), 1);
+ if (!len)
+ len = snprintf(kctl->id.name,
+ sizeof(kctl->id.name),
"Feature %d", unitid);
}
if (!mapped_name)
check_no_speaker_on_headset(kctl, state->mixer->chip->card);
- /* determine the stream direction:
+ /*
+ * determine the stream direction:
* if the connected output is USB stream, then it's likely a
* capture stream. otherwise it should be playback (hopefully :)
*/
- if (! mapped_name && ! (state->oterm.type >> 16)) {
- if ((state->oterm.type & 0xff00) == 0x0100) {
+ if (!mapped_name && !(state->oterm.type >> 16)) {
+ if ((state->oterm.type & 0xff00) == 0x0100)
len = append_ctl_name(kctl, " Capture");
- } else {
+ else
len = append_ctl_name(kctl, " Playback");
- }
}
append_ctl_name(kctl, control == UAC_FU_MUTE ?
" Switch" : " Volume");
break;
default:
- if (! len)
+ if (!len)
strlcpy(kctl->id.name, audio_feature_info[control-1].name,
sizeof(kctl->id.name));
break;
@@ -1300,33 +1333,35 @@ static void build_feature_ctl(struct mixer_build *state, void *raw_desc,
}
range = (cval->max - cval->min) / cval->res;
- /* Are there devices with volume range more than 255? I use a bit more
+ /*
+ * Are there devices with volume range more than 255? I use a bit more
* to be sure. 384 is a resolution magic number found on Logitech
* devices. It will definitively catch all buggy Logitech devices.
*/
if (range > 384) {
- usb_audio_warn(state->chip, "Warning! Unlikely big "
- "volume range (=%u), cval->res is probably wrong.",
- range);
+ usb_audio_warn(state->chip,
+ "Warning! Unlikely big volume range (=%u), "
+ "cval->res is probably wrong.",
+ range);
usb_audio_warn(state->chip, "[%d] FU [%s] ch = %d, "
- "val = %d/%d/%d", cval->id,
- kctl->id.name, cval->channels,
- cval->min, cval->max, cval->res);
+ "val = %d/%d/%d", cval->id,
+ kctl->id.name, cval->channels,
+ cval->min, cval->max, cval->res);
}
usb_audio_dbg(state->chip, "[%d] FU [%s] ch = %d, val = %d/%d/%d\n",
- cval->id, kctl->id.name, cval->channels, cval->min, cval->max, cval->res);
+ cval->id, kctl->id.name, cval->channels,
+ cval->min, cval->max, cval->res);
snd_usb_mixer_add_control(state->mixer, kctl);
}
-
-
/*
* parse a feature unit
*
* most of controls are defined here.
*/
-static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void *_ftr)
+static int parse_audio_feature_unit(struct mixer_build *state, int unitid,
+ void *_ftr)
{
int channels, i, j;
struct usb_audio_term iterm;
@@ -1400,15 +1435,25 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void
for (i = 0; i < 10; i++) {
unsigned int ch_bits = 0;
for (j = 0; j < channels; j++) {
- unsigned int mask = snd_usb_combine_bytes(bmaControls + csize * (j+1), csize);
+ unsigned int mask;
+
+ mask = snd_usb_combine_bytes(bmaControls +
+ csize * (j+1), csize);
if (mask & (1 << i))
ch_bits |= (1 << j);
}
/* audio class v1 controls are never read-only */
- if (ch_bits & 1) /* the first channel must be set (for ease of programming) */
- build_feature_ctl(state, _ftr, ch_bits, i, &iterm, unitid, 0);
+
+ /*
+ * The first channel must be set
+ * (for ease of programming).
+ */
+ if (ch_bits & 1)
+ build_feature_ctl(state, _ftr, ch_bits, i,
+ &iterm, unitid, 0);
if (master_bits & (1 << i))
- build_feature_ctl(state, _ftr, 0, i, &iterm, unitid, 0);
+ build_feature_ctl(state, _ftr, 0, i, &iterm,
+ unitid, 0);
}
} else { /* UAC_VERSION_2 */
for (i = 0; i < ARRAY_SIZE(audio_feature_info); i++) {
@@ -1416,7 +1461,10 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void
unsigned int ch_read_only = 0;
for (j = 0; j < channels; j++) {
- unsigned int mask = snd_usb_combine_bytes(bmaControls + csize * (j+1), csize);
+ unsigned int mask;
+
+ mask = snd_usb_combine_bytes(bmaControls +
+ csize * (j+1), csize);
if (uac2_control_is_readable(mask, i)) {
ch_bits |= (1 << j);
if (!uac2_control_is_writeable(mask, i))
@@ -1424,12 +1472,22 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void
}
}
- /* NOTE: build_feature_ctl() will mark the control read-only if all channels
- * are marked read-only in the descriptors. Otherwise, the control will be
- * reported as writeable, but the driver will not actually issue a write
- * command for read-only channels */
- if (ch_bits & 1) /* the first channel must be set (for ease of programming) */
- build_feature_ctl(state, _ftr, ch_bits, i, &iterm, unitid, ch_read_only);
+ /*
+ * NOTE: build_feature_ctl() will mark the control
+ * read-only if all channels are marked read-only in
+ * the descriptors. Otherwise, the control will be
+ * reported as writeable, but the driver will not
+ * actually issue a write command for read-only
+ * channels.
+ */
+
+ /*
+ * The first channel must be set
+ * (for ease of programming).
+ */
+ if (ch_bits & 1)
+ build_feature_ctl(state, _ftr, ch_bits, i,
+ &iterm, unitid, ch_read_only);
if (uac2_control_is_readable(master_bits, i))
build_feature_ctl(state, _ftr, 0, i, &iterm, unitid,
!uac2_control_is_writeable(master_bits, i));
@@ -1439,7 +1497,6 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void
return 0;
}
-
/*
* Mixer Unit
*/
@@ -1450,7 +1507,6 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void
* the callbacks are identical with feature unit.
* input channel number (zero based) is given in control field instead.
*/
-
static void build_mixer_unit_ctl(struct mixer_build *state,
struct uac_mixer_unit_descriptor *desc,
int in_pin, int in_ch, int unitid,
@@ -1467,7 +1523,7 @@ static void build_mixer_unit_ctl(struct mixer_build *state,
return;
cval = kzalloc(sizeof(*cval), GFP_KERNEL);
- if (! cval)
+ if (!cval)
return;
cval->mixer = state->mixer;
@@ -1475,7 +1531,9 @@ static void build_mixer_unit_ctl(struct mixer_build *state,
cval->control = in_ch + 1; /* based on 1 */
cval->val_type = USB_MIXER_S16;
for (i = 0; i < num_outs; i++) {
- if (check_matrix_bitmap(uac_mixer_unit_bmControls(desc, state->mixer->protocol), in_ch, i, num_outs)) {
+ __u8 *c = uac_mixer_unit_bmControls(desc, state->mixer->protocol);
+
+ if (check_matrix_bitmap(c, in_ch, i, num_outs)) {
cval->cmask |= (1 << i);
cval->channels++;
}
@@ -1485,7 +1543,7 @@ static void build_mixer_unit_ctl(struct mixer_build *state,
get_min_max(cval, 0);
kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
- if (! kctl) {
+ if (!kctl) {
usb_audio_err(state->chip, "cannot malloc kcontrol\n");
kfree(cval);
return;
@@ -1493,9 +1551,10 @@ static void build_mixer_unit_ctl(struct mixer_build *state,
kctl->private_free = usb_mixer_elem_free;
len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name));
- if (! len)
- len = get_term_name(state, iterm, kctl->id.name, sizeof(kctl->id.name), 0);
- if (! len)
+ if (!len)
+ len = get_term_name(state, iterm, kctl->id.name,
+ sizeof(kctl->id.name), 0);
+ if (!len)
len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1);
append_ctl_name(kctl, " Volume");
@@ -1504,24 +1563,28 @@ static void build_mixer_unit_ctl(struct mixer_build *state,
snd_usb_mixer_add_control(state->mixer, kctl);
}
-
/*
* parse a mixer unit
*/
-static int parse_audio_mixer_unit(struct mixer_build *state, int unitid, void *raw_desc)
+static int parse_audio_mixer_unit(struct mixer_build *state, int unitid,
+ void *raw_desc)
{
struct uac_mixer_unit_descriptor *desc = raw_desc;
struct usb_audio_term iterm;
int input_pins, num_ins, num_outs;
int pin, ich, err;
- if (desc->bLength < 11 || ! (input_pins = desc->bNrInPins) || ! (num_outs = uac_mixer_unit_bNrChannels(desc))) {
- usb_audio_err(state->chip, "invalid MIXER UNIT descriptor %d\n", unitid);
+ if (desc->bLength < 11 || !(input_pins = desc->bNrInPins) ||
+ !(num_outs = uac_mixer_unit_bNrChannels(desc))) {
+ usb_audio_err(state->chip,
+ "invalid MIXER UNIT descriptor %d\n",
+ unitid);
return -EINVAL;
}
/* no bmControls field (e.g. Maya44) -> ignore */
if (desc->bLength <= 10 + input_pins) {
- usb_audio_dbg(state->chip, "MU %d has no bmControls field\n", unitid);
+ usb_audio_dbg(state->chip, "MU %d has no bmControls field\n",
+ unitid);
return 0;
}
@@ -1535,12 +1598,14 @@ static int parse_audio_mixer_unit(struct mixer_build *state, int unitid, void *r
if (err < 0)
return err;
num_ins += iterm.channels;
- for (; ich < num_ins; ++ich) {
+ for (; ich < num_ins; ich++) {
int och, ich_has_controls = 0;
- for (och = 0; och < num_outs; ++och) {
- if (check_matrix_bitmap(uac_mixer_unit_bmControls(desc, state->mixer->protocol),
- ich, och, num_outs)) {
+ for (och = 0; och < num_outs; och++) {
+ __u8 *c = uac_mixer_unit_bmControls(desc,
+ state->mixer->protocol);
+
+ if (check_matrix_bitmap(c, ich, och, num_outs)) {
ich_has_controls = 1;
break;
}
@@ -1553,13 +1618,13 @@ static int parse_audio_mixer_unit(struct mixer_build *state, int unitid, void *r
return 0;
}
-
/*
* Processing Unit / Extension Unit
*/
/* get callback for processing/extension unit */
-static int mixer_ctl_procunit_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+static int mixer_ctl_procunit_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
{
struct usb_mixer_elem_info *cval = kcontrol->private_data;
int err, val;
@@ -1577,7 +1642,8 @@ static int mixer_ctl_procunit_get(struct snd_kcontrol *kcontrol, struct snd_ctl_
}
/* put callback for processing/extension unit */
-static int mixer_ctl_procunit_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+static int mixer_ctl_procunit_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
{
struct usb_mixer_elem_info *cval = kcontrol->private_data;
int val, oval, err;
@@ -1606,7 +1672,6 @@ static struct snd_kcontrol_new mixer_procunit_ctl = {
.put = mixer_ctl_procunit_put,
};
-
/*
* predefined data for processing units
*/
@@ -1697,10 +1762,13 @@ static struct procunit_info extunits[] = {
{ USB_XU_DEVICE_OPTIONS, "AnalogueIn Soft Limit", soft_limit_xu_info },
{ 0 }
};
+
/*
* build a processing/extension unit
*/
-static int build_audio_procunit(struct mixer_build *state, int unitid, void *raw_desc, struct procunit_info *list, char *name)
+static int build_audio_procunit(struct mixer_build *state, int unitid,
+ void *raw_desc, struct procunit_info *list,
+ char *name)
{
struct uac_processing_unit_descriptor *desc = raw_desc;
int num_ins = desc->bNrInPins;
@@ -1733,22 +1801,20 @@ static int build_audio_procunit(struct mixer_build *state, int unitid, void *raw
for (info = list; info && info->type; info++)
if (info->type == type)
break;
- if (! info || ! info->type)
+ if (!info || !info->type)
info = &default_info;
for (valinfo = info->values; valinfo->control; valinfo++) {
__u8 *controls = uac_processing_unit_bmControls(desc, state->mixer->protocol);
- if (! (controls[valinfo->control / 8] & (1 << ((valinfo->control % 8) - 1))))
+ if (!(controls[valinfo->control / 8] & (1 << ((valinfo->control % 8) - 1))))
continue;
map = find_map(state, unitid, valinfo->control);
if (check_ignored_ctl(map))
continue;
cval = kzalloc(sizeof(*cval), GFP_KERNEL);
- if (! cval) {
- usb_audio_err(state->chip, "cannot malloc kcontrol\n");
+ if (!cval)
return -ENOMEM;
- }
cval->mixer = state->mixer;
cval->id = unitid;
cval->control = valinfo->control;
@@ -1765,7 +1831,8 @@ static int build_audio_procunit(struct mixer_build *state, int unitid, void *raw
cval->initialized = 1;
} else {
if (type == USB_XU_CLOCK_RATE) {
- /* E-Mu USB 0404/0202/TrackerPre/0204
+ /*
+ * E-Mu USB 0404/0202/TrackerPre/0204
* samplerate control quirk
*/
cval->min = 0;
@@ -1777,60 +1844,69 @@ static int build_audio_procunit(struct mixer_build *state, int unitid, void *raw
}
kctl = snd_ctl_new1(&mixer_procunit_ctl, cval);
- if (! kctl) {
- usb_audio_err(state->chip, "cannot malloc kcontrol\n");
+ if (!kctl) {
kfree(cval);
return -ENOMEM;
}
kctl->private_free = usb_mixer_elem_free;
- if (check_mapped_name(map, kctl->id.name,
- sizeof(kctl->id.name)))
+ if (check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name))) {
/* nothing */ ;
- else if (info->name)
+ } else if (info->name) {
strlcpy(kctl->id.name, info->name, sizeof(kctl->id.name));
- else {
+ } else {
nameid = uac_processing_unit_iProcessing(desc, state->mixer->protocol);
len = 0;
if (nameid)
- len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
- if (! len)
+ len = snd_usb_copy_string_desc(state, nameid,
+ kctl->id.name,
+ sizeof(kctl->id.name));
+ if (!len)
strlcpy(kctl->id.name, name, sizeof(kctl->id.name));
}
append_ctl_name(kctl, " ");
append_ctl_name(kctl, valinfo->suffix);
usb_audio_dbg(state->chip,
- "[%d] PU [%s] ch = %d, val = %d/%d\n",
- cval->id, kctl->id.name, cval->channels, cval->min, cval->max);
- if ((err = snd_usb_mixer_add_control(state->mixer, kctl)) < 0)
+ "[%d] PU [%s] ch = %d, val = %d/%d\n",
+ cval->id, kctl->id.name, cval->channels,
+ cval->min, cval->max);
+
+ err = snd_usb_mixer_add_control(state->mixer, kctl);
+ if (err < 0)
return err;
}
return 0;
}
-
-static int parse_audio_processing_unit(struct mixer_build *state, int unitid, void *raw_desc)
+static int parse_audio_processing_unit(struct mixer_build *state, int unitid,
+ void *raw_desc)
{
- return build_audio_procunit(state, unitid, raw_desc, procunits, "Processing Unit");
+ return build_audio_procunit(state, unitid, raw_desc,
+ procunits, "Processing Unit");
}
-static int parse_audio_extension_unit(struct mixer_build *state, int unitid, void *raw_desc)
+static int parse_audio_extension_unit(struct mixer_build *state, int unitid,
+ void *raw_desc)
{
- /* Note that we parse extension units with processing unit descriptors.
- * That's ok as the layout is the same */
- return build_audio_procunit(state, unitid, raw_desc, extunits, "Extension Unit");
+ /*
+ * Note that we parse extension units with processing unit descriptors.
+ * That's ok as the layout is the same.
+ */
+ return build_audio_procunit(state, unitid, raw_desc,
+ extunits, "Extension Unit");
}
-
/*
* Selector Unit
*/
-/* info callback for selector unit
+/*
+ * info callback for selector unit
* use an enumerator type for routing
*/
-static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
+static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
{
struct usb_mixer_elem_info *cval = kcontrol->private_data;
const char **itemlist = (const char **)kcontrol->private_value;
@@ -1841,7 +1917,8 @@ static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol, struct snd_ctl
}
/* get callback for selector unit */
-static int mixer_ctl_selector_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+static int mixer_ctl_selector_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
{
struct usb_mixer_elem_info *cval = kcontrol->private_data;
int val, err;
@@ -1860,7 +1937,8 @@ static int mixer_ctl_selector_get(struct snd_kcontrol *kcontrol, struct snd_ctl_
}
/* put callback for selector unit */
-static int mixer_ctl_selector_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+static int mixer_ctl_selector_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
{
struct usb_mixer_elem_info *cval = kcontrol->private_data;
int val, oval, err;
@@ -1889,8 +1967,8 @@ static struct snd_kcontrol_new mixer_selectunit_ctl = {
.put = mixer_ctl_selector_put,
};
-
-/* private free callback.
+/*
+ * private free callback.
* free both private_data and private_value
*/
static void usb_mixer_selector_elem_free(struct snd_kcontrol *kctl)
@@ -1915,7 +1993,8 @@ static void usb_mixer_selector_elem_free(struct snd_kcontrol *kctl)
/*
* parse a selector unit
*/
-static int parse_audio_selector_unit(struct mixer_build *state, int unitid, void *raw_desc)
+static int parse_audio_selector_unit(struct mixer_build *state, int unitid,
+ void *raw_desc)
{
struct uac_selector_unit_descriptor *desc = raw_desc;
unsigned int i, nameid, len;
@@ -1944,10 +2023,8 @@ static int parse_audio_selector_unit(struct mixer_build *state, int unitid, void
return 0;
cval = kzalloc(sizeof(*cval), GFP_KERNEL);
- if (! cval) {
- usb_audio_err(state->chip, "cannot malloc kcontrol\n");
+ if (!cval)
return -ENOMEM;
- }
cval->mixer = state->mixer;
cval->id = unitid;
cval->val_type = USB_MIXER_U8;
@@ -1963,8 +2040,7 @@ static int parse_audio_selector_unit(struct mixer_build *state, int unitid, void
cval->control = 0;
namelist = kmalloc(sizeof(char *) * desc->bNrInPins, GFP_KERNEL);
- if (! namelist) {
- usb_audio_err(state->chip, "cannot malloc\n");
+ if (!namelist) {
kfree(cval);
return -ENOMEM;
}
@@ -1973,8 +2049,7 @@ static int parse_audio_selector_unit(struct mixer_build *state, int unitid, void
struct usb_audio_term iterm;
len = 0;
namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL);
- if (! namelist[i]) {
- usb_audio_err(state->chip, "cannot malloc\n");
+ if (!namelist[i]) {
while (i--)
kfree(namelist[i]);
kfree(namelist);
@@ -1986,7 +2061,7 @@ static int parse_audio_selector_unit(struct mixer_build *state, int unitid, void
if (! len && check_input_term(state, desc->baSourceID[i], &iterm) >= 0)
len = get_term_name(state, &iterm, namelist[i], MAX_ITEM_NAME_LEN, 0);
if (! len)
- sprintf(namelist[i], "Input %d", i);
+ sprintf(namelist[i], "Input %u", i);
}
kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval);
@@ -2004,11 +2079,12 @@ static int parse_audio_selector_unit(struct mixer_build *state, int unitid, void
if (len)
;
else if (nameid)
- snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
+ snd_usb_copy_string_desc(state, nameid, kctl->id.name,
+ sizeof(kctl->id.name));
else {
len = get_term_name(state, &state->oterm,
kctl->id.name, sizeof(kctl->id.name), 0);
- if (! len)
+ if (!len)
strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name));
if (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR)
@@ -2027,7 +2103,6 @@ static int parse_audio_selector_unit(struct mixer_build *state, int unitid, void
return 0;
}
-
/*
* parse an audio unit recursively
*/
@@ -2125,14 +2200,16 @@ static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
}
p = NULL;
- while ((p = snd_usb_find_csint_desc(mixer->hostif->extra, mixer->hostif->extralen,
+ while ((p = snd_usb_find_csint_desc(mixer->hostif->extra,
+ mixer->hostif->extralen,
p, UAC_OUTPUT_TERMINAL)) != NULL) {
if (mixer->protocol == UAC_VERSION_1) {
struct uac1_output_terminal_descriptor *desc = p;
if (desc->bLength < sizeof(*desc))
continue; /* invalid descriptor? */
- set_bit(desc->bTerminalID, state.unitbitmap); /* mark terminal ID as visited */
+ /* mark terminal ID as visited */
+ set_bit(desc->bTerminalID, state.unitbitmap);
state.oterm.id = desc->bTerminalID;
state.oterm.type = le16_to_cpu(desc->wTerminalType);
state.oterm.name = desc->iTerminal;
@@ -2144,7 +2221,8 @@ static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
if (desc->bLength < sizeof(*desc))
continue; /* invalid descriptor? */
- set_bit(desc->bTerminalID, state.unitbitmap); /* mark terminal ID as visited */
+ /* mark terminal ID as visited */
+ set_bit(desc->bTerminalID, state.unitbitmap);
state.oterm.id = desc->bTerminalID;
state.oterm.type = le16_to_cpu(desc->wTerminalType);
state.oterm.name = desc->iTerminal;
@@ -2152,7 +2230,10 @@ static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
if (err < 0 && err != -EINVAL)
return err;
- /* for UAC2, use the same approach to also add the clock selectors */
+ /*
+ * For UAC2, use the same approach to also add the
+ * clock selectors
+ */
err = parse_audio_unit(&state, desc->bCSourceID);
if (err < 0 && err != -EINVAL)
return err;
@@ -2306,7 +2387,9 @@ static void snd_usb_mixer_interrupt(struct urb *urb)
}
requeue:
- if (ustatus != -ENOENT && ustatus != -ECONNRESET && ustatus != -ESHUTDOWN) {
+ if (ustatus != -ENOENT &&
+ ustatus != -ECONNRESET &&
+ ustatus != -ESHUTDOWN) {
urb->dev = mixer->chip->dev;
usb_submit_urb(urb, GFP_ATOMIC);
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-01 05:37:39 +0300