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Diffstat (limited to 'sound/usb/clock.c')
-rw-r--r--sound/usb/clock.c150
1 files changed, 110 insertions, 40 deletions
diff --git a/sound/usb/clock.c b/sound/usb/clock.c
index 72e9bdf76115..b118cf97607f 100644
--- a/sound/usb/clock.c
+++ b/sound/usb/clock.c
@@ -38,39 +38,37 @@ static void *find_uac_clock_desc(struct usb_host_interface *iface, int id,
static bool validate_clock_source_v2(void *p, int id)
{
struct uac_clock_source_descriptor *cs = p;
- return cs->bLength == sizeof(*cs) && cs->bClockID == id;
+ return cs->bClockID == id;
}
static bool validate_clock_source_v3(void *p, int id)
{
struct uac3_clock_source_descriptor *cs = p;
- return cs->bLength == sizeof(*cs) && cs->bClockID == id;
+ return cs->bClockID == id;
}
static bool validate_clock_selector_v2(void *p, int id)
{
struct uac_clock_selector_descriptor *cs = p;
- return cs->bLength >= sizeof(*cs) && cs->bClockID == id &&
- cs->bLength == 7 + cs->bNrInPins;
+ return cs->bClockID == id;
}
static bool validate_clock_selector_v3(void *p, int id)
{
struct uac3_clock_selector_descriptor *cs = p;
- return cs->bLength >= sizeof(*cs) && cs->bClockID == id &&
- cs->bLength == 11 + cs->bNrInPins;
+ return cs->bClockID == id;
}
static bool validate_clock_multiplier_v2(void *p, int id)
{
struct uac_clock_multiplier_descriptor *cs = p;
- return cs->bLength == sizeof(*cs) && cs->bClockID == id;
+ return cs->bClockID == id;
}
static bool validate_clock_multiplier_v3(void *p, int id)
{
struct uac3_clock_multiplier_descriptor *cs = p;
- return cs->bLength == sizeof(*cs) && cs->bClockID == id;
+ return cs->bClockID == id;
}
#define DEFINE_FIND_HELPER(name, obj, validator, type) \
@@ -153,8 +151,71 @@ static int uac_clock_selector_set_val(struct snd_usb_audio *chip, int selector_i
return ret;
}
+static bool uac_clock_source_is_valid_quirk(struct snd_usb_audio *chip,
+ struct audioformat *fmt,
+ int source_id)
+{
+ bool ret = false;
+ int count;
+ unsigned char data;
+ struct usb_device *dev = chip->dev;
+
+ if (fmt->protocol == UAC_VERSION_2) {
+ struct uac_clock_source_descriptor *cs_desc =
+ snd_usb_find_clock_source(chip->ctrl_intf, source_id);
+
+ if (!cs_desc)
+ return false;
+
+ /*
+ * Assume the clock is valid if clock source supports only one
+ * single sample rate, the terminal is connected directly to it
+ * (there is no clock selector) and clock type is internal.
+ * This is to deal with some Denon DJ controllers that always
+ * reports that clock is invalid.
+ */
+ if (fmt->nr_rates == 1 &&
+ (fmt->clock & 0xff) == cs_desc->bClockID &&
+ (cs_desc->bmAttributes & 0x3) !=
+ UAC_CLOCK_SOURCE_TYPE_EXT)
+ return true;
+ }
+
+ /*
+ * MOTU MicroBook IIc
+ * Sample rate changes takes more than 2 seconds for this device. Clock
+ * validity request returns false during that period.
+ */
+ if (chip->usb_id == USB_ID(0x07fd, 0x0004)) {
+ count = 0;
+
+ while ((!ret) && (count < 50)) {
+ int err;
+
+ msleep(100);
+
+ err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_CUR,
+ USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
+ UAC2_CS_CONTROL_CLOCK_VALID << 8,
+ snd_usb_ctrl_intf(chip) | (source_id << 8),
+ &data, sizeof(data));
+ if (err < 0) {
+ dev_warn(&dev->dev,
+ "%s(): cannot get clock validity for id %d\n",
+ __func__, source_id);
+ return false;
+ }
+
+ ret = !!data;
+ count++;
+ }
+ }
+
+ return ret;
+}
+
static bool uac_clock_source_is_valid(struct snd_usb_audio *chip,
- int protocol,
+ struct audioformat *fmt,
int source_id)
{
int err;
@@ -162,26 +223,26 @@ static bool uac_clock_source_is_valid(struct snd_usb_audio *chip,
struct usb_device *dev = chip->dev;
u32 bmControls;
- if (protocol == UAC_VERSION_3) {
+ if (fmt->protocol == UAC_VERSION_3) {
struct uac3_clock_source_descriptor *cs_desc =
snd_usb_find_clock_source_v3(chip->ctrl_intf, source_id);
if (!cs_desc)
- return 0;
+ return false;
bmControls = le32_to_cpu(cs_desc->bmControls);
} else { /* UAC_VERSION_1/2 */
struct uac_clock_source_descriptor *cs_desc =
snd_usb_find_clock_source(chip->ctrl_intf, source_id);
if (!cs_desc)
- return 0;
+ return false;
bmControls = cs_desc->bmControls;
}
/* If a clock source can't tell us whether it's valid, we assume it is */
if (!uac_v2v3_control_is_readable(bmControls,
UAC2_CS_CONTROL_CLOCK_VALID))
- return 1;
+ return true;
err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_CUR,
USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
@@ -193,13 +254,17 @@ static bool uac_clock_source_is_valid(struct snd_usb_audio *chip,
dev_warn(&dev->dev,
"%s(): cannot get clock validity for id %d\n",
__func__, source_id);
- return 0;
+ return false;
}
- return !!data;
+ if (data)
+ return true;
+ else
+ return uac_clock_source_is_valid_quirk(chip, fmt, source_id);
}
-static int __uac_clock_find_source(struct snd_usb_audio *chip, int entity_id,
+static int __uac_clock_find_source(struct snd_usb_audio *chip,
+ struct audioformat *fmt, int entity_id,
unsigned long *visited, bool validate)
{
struct uac_clock_source_descriptor *source;
@@ -219,7 +284,7 @@ static int __uac_clock_find_source(struct snd_usb_audio *chip, int entity_id,
source = snd_usb_find_clock_source(chip->ctrl_intf, entity_id);
if (source) {
entity_id = source->bClockID;
- if (validate && !uac_clock_source_is_valid(chip, UAC_VERSION_2,
+ if (validate && !uac_clock_source_is_valid(chip, fmt,
entity_id)) {
usb_audio_err(chip,
"clock source %d is not valid, cannot use\n",
@@ -250,8 +315,9 @@ static int __uac_clock_find_source(struct snd_usb_audio *chip, int entity_id,
}
cur = ret;
- ret = __uac_clock_find_source(chip, selector->baCSourceID[ret - 1],
- visited, validate);
+ ret = __uac_clock_find_source(chip, fmt,
+ selector->baCSourceID[ret - 1],
+ visited, validate);
if (!validate || ret > 0 || !chip->autoclock)
return ret;
@@ -262,8 +328,9 @@ static int __uac_clock_find_source(struct snd_usb_audio *chip, int entity_id,
if (i == cur)
continue;
- ret = __uac_clock_find_source(chip, selector->baCSourceID[i - 1],
- visited, true);
+ ret = __uac_clock_find_source(chip, fmt,
+ selector->baCSourceID[i - 1],
+ visited, true);
if (ret < 0)
continue;
@@ -283,14 +350,16 @@ static int __uac_clock_find_source(struct snd_usb_audio *chip, int entity_id,
/* FIXME: multipliers only act as pass-thru element for now */
multiplier = snd_usb_find_clock_multiplier(chip->ctrl_intf, entity_id);
if (multiplier)
- return __uac_clock_find_source(chip, multiplier->bCSourceID,
- visited, validate);
+ return __uac_clock_find_source(chip, fmt,
+ multiplier->bCSourceID,
+ visited, validate);
return -EINVAL;
}
-static int __uac3_clock_find_source(struct snd_usb_audio *chip, int entity_id,
- unsigned long *visited, bool validate)
+static int __uac3_clock_find_source(struct snd_usb_audio *chip,
+ struct audioformat *fmt, int entity_id,
+ unsigned long *visited, bool validate)
{
struct uac3_clock_source_descriptor *source;
struct uac3_clock_selector_descriptor *selector;
@@ -309,7 +378,7 @@ static int __uac3_clock_find_source(struct snd_usb_audio *chip, int entity_id,
source = snd_usb_find_clock_source_v3(chip->ctrl_intf, entity_id);
if (source) {
entity_id = source->bClockID;
- if (validate && !uac_clock_source_is_valid(chip, UAC_VERSION_3,
+ if (validate && !uac_clock_source_is_valid(chip, fmt,
entity_id)) {
usb_audio_err(chip,
"clock source %d is not valid, cannot use\n",
@@ -340,7 +409,8 @@ static int __uac3_clock_find_source(struct snd_usb_audio *chip, int entity_id,
}
cur = ret;
- ret = __uac3_clock_find_source(chip, selector->baCSourceID[ret - 1],
+ ret = __uac3_clock_find_source(chip, fmt,
+ selector->baCSourceID[ret - 1],
visited, validate);
if (!validate || ret > 0 || !chip->autoclock)
return ret;
@@ -352,8 +422,9 @@ static int __uac3_clock_find_source(struct snd_usb_audio *chip, int entity_id,
if (i == cur)
continue;
- ret = __uac3_clock_find_source(chip, selector->baCSourceID[i - 1],
- visited, true);
+ ret = __uac3_clock_find_source(chip, fmt,
+ selector->baCSourceID[i - 1],
+ visited, true);
if (ret < 0)
continue;
@@ -374,7 +445,8 @@ static int __uac3_clock_find_source(struct snd_usb_audio *chip, int entity_id,
multiplier = snd_usb_find_clock_multiplier_v3(chip->ctrl_intf,
entity_id);
if (multiplier)
- return __uac3_clock_find_source(chip, multiplier->bCSourceID,
+ return __uac3_clock_find_source(chip, fmt,
+ multiplier->bCSourceID,
visited, validate);
return -EINVAL;
@@ -391,18 +463,18 @@ static int __uac3_clock_find_source(struct snd_usb_audio *chip, int entity_id,
*
* Returns the clock source UnitID (>=0) on success, or an error.
*/
-int snd_usb_clock_find_source(struct snd_usb_audio *chip, int protocol,
- int entity_id, bool validate)
+int snd_usb_clock_find_source(struct snd_usb_audio *chip,
+ struct audioformat *fmt, bool validate)
{
DECLARE_BITMAP(visited, 256);
memset(visited, 0, sizeof(visited));
- switch (protocol) {
+ switch (fmt->protocol) {
case UAC_VERSION_2:
- return __uac_clock_find_source(chip, entity_id, visited,
+ return __uac_clock_find_source(chip, fmt, fmt->clock, visited,
validate);
case UAC_VERSION_3:
- return __uac3_clock_find_source(chip, entity_id, visited,
+ return __uac3_clock_find_source(chip, fmt, fmt->clock, visited,
validate);
default:
return -EINVAL;
@@ -503,8 +575,7 @@ static int set_sample_rate_v2v3(struct snd_usb_audio *chip, int iface,
* automatic clock selection if the current clock is not
* valid.
*/
- clock = snd_usb_clock_find_source(chip, fmt->protocol,
- fmt->clock, true);
+ clock = snd_usb_clock_find_source(chip, fmt, true);
if (clock < 0) {
/* We did not find a valid clock, but that might be
* because the current sample rate does not match an
@@ -512,8 +583,7 @@ static int set_sample_rate_v2v3(struct snd_usb_audio *chip, int iface,
* and we will do another validation after setting the
* rate.
*/
- clock = snd_usb_clock_find_source(chip, fmt->protocol,
- fmt->clock, false);
+ clock = snd_usb_clock_find_source(chip, fmt, false);
if (clock < 0)
return clock;
}
@@ -579,7 +649,7 @@ static int set_sample_rate_v2v3(struct snd_usb_audio *chip, int iface,
validation:
/* validate clock after rate change */
- if (!uac_clock_source_is_valid(chip, fmt->protocol, clock))
+ if (!uac_clock_source_is_valid(chip, fmt, clock))
return -ENXIO;
return 0;
}