@@ -486,26 +486,57 @@ int snd_oxfw_stream_get_current_formation(struct snd_oxfw *oxfw,
enum avc_general_plug_dir dir,
struct snd_oxfw_stream_formation *formation)
{
- u8 *format;
- unsigned int len;
int err;
- len = AVC_GENERIC_FRAME_MAXIMUM_BYTES;
- format = kmalloc(len, GFP_KERNEL);
- if (format == NULL)
- return -ENOMEM;
+ if (!(oxfw->quirks & SND_OXFW_QUIRK_STREAM_FORMAT_INFO_UNSUPPORTED)) {
+ u8 *format;
+ unsigned int len;
- err = avc_stream_get_format_single(oxfw->unit, dir, 0, format, &len);
- if (err < 0)
- goto end;
- if (len < 3) {
- err = -EIO;
- goto end;
+ len = AVC_GENERIC_FRAME_MAXIMUM_BYTES;
+ format = kmalloc(len, GFP_KERNEL);
+ if (format == NULL)
+ return -ENOMEM;
+
+ err = avc_stream_get_format_single(oxfw->unit, dir, 0, format, &len);
+ if (err >= 0) {
+ if (len < 3)
+ err = -EIO;
+ else
+ err = snd_oxfw_stream_parse_format(format, formation);
+ }
+
+ kfree(format);
+ } else {
+ // Miglia Harmony Audio does not support Extended Stream Format Information
+ // command. Use the duplicated hard-coded format, instead.
+ unsigned int rate;
+ u8 *const *formats;
+ int i;
+
+ err = avc_general_get_sig_fmt(oxfw->unit, &rate, dir, 0);
+ if (err < 0)
+ return err;
+
+ if (dir == AVC_GENERAL_PLUG_DIR_IN)
+ formats = oxfw->rx_stream_formats;
+ else
+ formats = oxfw->tx_stream_formats;
+
+ for (i = 0; (i < SND_OXFW_STREAM_FORMAT_ENTRIES); ++i) {
+ if (!formats[i])
+ continue;
+
+ err = snd_oxfw_stream_parse_format(formats[i], formation);
+ if (err < 0)
+ continue;
+
+ if (formation->rate == rate)
+ break;
+ }
+ if (i == SND_OXFW_STREAM_FORMAT_ENTRIES)
+ return -EIO;
}
- err = snd_oxfw_stream_parse_format(format, formation);
-end:
- kfree(format);
return err;
}
@@ -600,14 +631,33 @@ assume_stream_formats(struct snd_oxfw *oxfw, enum avc_general_plug_dir dir,
unsigned int i, eid;
int err;
- /* get format at current sampling rate */
- err = avc_stream_get_format_single(oxfw->unit, dir, pid, buf, len);
- if (err < 0) {
- dev_err(&oxfw->unit->device,
- "fail to get current stream format for isoc %s plug %d:%d\n",
- (dir == AVC_GENERAL_PLUG_DIR_IN) ? "in" : "out",
- pid, err);
- goto end;
+ // get format at current sampling rate.
+ if (!(oxfw->quirks & SND_OXFW_QUIRK_STREAM_FORMAT_INFO_UNSUPPORTED)) {
+ err = avc_stream_get_format_single(oxfw->unit, dir, pid, buf, len);
+ if (err < 0) {
+ dev_err(&oxfw->unit->device,
+ "fail to get current stream format for isoc %s plug %d:%d\n",
+ (dir == AVC_GENERAL_PLUG_DIR_IN) ? "in" : "out",
+ pid, err);
+ goto end;
+ }
+ } else {
+ // Miglia Harmony Audio does not support Extended Stream Format Information
+ // command. Use the hard-coded format, instead.
+ buf[0] = 0x90;
+ buf[1] = 0x40;
+ buf[2] = avc_stream_rate_table[0];
+ buf[3] = 0x00;
+ buf[4] = 0x01;
+
+ if (dir == AVC_GENERAL_PLUG_DIR_IN)
+ buf[5] = 0x08;
+ else
+ buf[5] = 0x02;
+
+ buf[6] = 0x06;
+
+ *len = 7;
}
/* parse and set stream format */
@@ -52,6 +52,8 @@ enum snd_oxfw_quirk {
// performs media clock recovery voluntarily. In the recovery, the packets with NO_INFO
// are ignored, thus driver should transfer packets with timestamp.
SND_OXFW_QUIRK_VOLUNTARY_RECOVERY = 0x20,
+ // Miglia Harmony Audio does not support AV/C Stream Format Information command.
+ SND_OXFW_QUIRK_STREAM_FORMAT_INFO_UNSUPPORTED = 0x40,
};
/* This is an arbitrary number for convinience. */
Miglia Harmony Audio does neither support AV/C Stream Format Information command nor AV/C Extended Stream Format Information command. This commit adds a workaround for the case and uses the hard-coded formats. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> --- sound/firewire/oxfw/oxfw-stream.c | 96 +++++++++++++++++++++++-------- sound/firewire/oxfw/oxfw.h | 2 + 2 files changed, 75 insertions(+), 23 deletions(-)