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| author | Phillip Michael Jordan <phil@philjordan.eu> | 2008-08-05 11:01:00 +0200 |
|---|---|---|
| committer | Jaroslav Kysela <perex@perex.cz> | 2008-08-06 15:40:19 +0200 |
| commit | b9c196e1452e1d4cbf0a1499f1e9c1b3edf59320 (patch) | |
| tree | 050a0ba9c57a02723e900c26327e8d587da0c064 /sound/usb | |
| parent | 0e0e16a87a0b973702feb572c2552d82e1aec5b9 (diff) | |
| download | linux-b9c196e1452e1d4cbf0a1499f1e9c1b3edf59320.tar.gz | |
ALSA: snd_usb_audio: fix SB Extigy IR Remote regression
The support for the SB Extigy's remote seems to be broken in all recent ALSA versions, including 1.0.17. The driver detects the event correctly, then submits a URB to query the RC code. On the Extigy, the URB is submitted with a length of 2 bytes. My hardware, however, only replies with 1 byte, containing the correct RC button code. The current implementation discards this as being too short. (line 1784 of usbmixer.c) This patch specifies a "minimum packet length" in the remote control configuration. I've left the values for the Audigy 2/Live! the same as the packet length, as I'm assuming the existing code works with them. (I don't have the hardware to confirm) This fixes the Extigy RC support, e.g. for use with Lirc. Signed-off-by: Phillip Michael Jordan <phil@philjordan.eu> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'sound/usb')
| -rw-r--r-- | sound/usb/usbmixer.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c index 89c63d073cc6..5f98bee06959 100644 --- a/sound/usb/usbmixer.c +++ b/sound/usb/usbmixer.c @@ -59,12 +59,13 @@ static const struct rc_config { u8 offset; u8 length; u8 packet_length; + u8 min_packet_length; /* minimum accepted length of the URB result */ u8 mute_mixer_id; u32 mute_code; } rc_configs[] = { - { USB_ID(0x041e, 0x3000), 0, 1, 2, 18, 0x0013 }, /* Extigy */ - { USB_ID(0x041e, 0x3020), 2, 1, 6, 18, 0x0013 }, /* Audigy 2 NX */ - { USB_ID(0x041e, 0x3040), 2, 2, 6, 2, 0x6e91 }, /* Live! 24-bit */ + { USB_ID(0x041e, 0x3000), 0, 1, 2, 1, 18, 0x0013 }, /* Extigy */ + { USB_ID(0x041e, 0x3020), 2, 1, 6, 6, 18, 0x0013 }, /* Audigy 2 NX */ + { USB_ID(0x041e, 0x3040), 2, 2, 6, 6, 2, 0x6e91 }, /* Live! 24-bit */ }; struct usb_mixer_interface { @@ -1781,7 +1782,7 @@ static void snd_usb_soundblaster_remote_complete(struct urb *urb) const struct rc_config *rc = mixer->rc_cfg; u32 code; - if (urb->status < 0 || urb->actual_length < rc->packet_length) + if (urb->status < 0 || urb->actual_length < rc->min_packet_length) return; code = mixer->rc_buffer[rc->offset]; |