diff options
Diffstat (limited to 'sound/usb')
| -rw-r--r-- | sound/usb/usbmixer.c | 68 |
1 files changed, 40 insertions, 28 deletions
diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c index ab921aa9d77a..491e975a0c87 100644 --- a/sound/usb/usbmixer.c +++ b/sound/usb/usbmixer.c @@ -46,6 +46,27 @@ /* ignore error from controls - for debugging */ /* #define IGNORE_CTL_ERROR */ +/* + * Sound Blaster remote control configuration + * + * format of remote control data: + * Extigy: xx 00 + * Audigy 2 NX: 06 80 xx 00 00 00 + * Live! 24-bit: 06 80 xx yy 22 83 + */ +static const struct rc_config { + u32 usb_id; + u8 offset; + u8 length; + u8 packet_length; + 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 */ +}; + struct usb_mixer_interface { struct snd_usb_audio *chip; unsigned int ctrlif; @@ -55,11 +76,7 @@ struct usb_mixer_interface { struct usb_mixer_elem_info **id_elems; /* array[256], indexed by unit id */ /* Sound Blaster remote control stuff */ - enum { - RC_NONE, - RC_EXTIGY, - RC_AUDIGY2NX, - } rc_type; + const struct rc_config *rc_cfg; unsigned long rc_hwdep_open; u32 rc_code; wait_queue_head_t rc_waitq; @@ -1647,7 +1664,7 @@ static void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, static void snd_usb_mixer_memory_change(struct usb_mixer_interface *mixer, int unitid) { - if (mixer->rc_type == RC_NONE) + if (!mixer->rc_cfg) return; /* unit ids specific to Extigy/Audigy 2 NX: */ switch (unitid) { @@ -1732,20 +1749,19 @@ static void snd_usb_soundblaster_remote_complete(struct urb *urb, struct pt_regs *regs) { struct usb_mixer_interface *mixer = urb->context; - /* - * format of remote control data: - * Extigy: xx 00 - * Audigy 2 NX: 06 80 xx 00 00 00 - */ - int offset = mixer->rc_type == RC_EXTIGY ? 0 : 2; + const struct rc_config *rc = mixer->rc_cfg; u32 code; - if (urb->status < 0 || urb->actual_length <= offset) + if (urb->status < 0 || urb->actual_length < rc->packet_length) return; - code = mixer->rc_buffer[offset]; + + code = mixer->rc_buffer[rc->offset]; + if (rc->length == 2) + code |= mixer->rc_buffer[rc->offset + 1] << 8; + /* the Mute button actually changes the mixer control */ - if (code == 13) - snd_usb_mixer_notify_id(mixer, 18); + if (code == rc->mute_code) + snd_usb_mixer_notify_id(mixer, rc->mute_mixer_id); mixer->rc_code = code; wmb(); wake_up(&mixer->rc_waitq); @@ -1801,21 +1817,17 @@ static unsigned int snd_usb_sbrc_hwdep_poll(struct snd_hwdep *hw, struct file *f static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer) { struct snd_hwdep *hwdep; - int err, len; + int err, len, i; - switch (mixer->chip->usb_id) { - case USB_ID(0x041e, 0x3000): - mixer->rc_type = RC_EXTIGY; - len = 2; - break; - case USB_ID(0x041e, 0x3020): - mixer->rc_type = RC_AUDIGY2NX; - len = 6; - break; - default: + for (i = 0; i < ARRAY_SIZE(rc_configs); ++i) + if (rc_configs[i].usb_id == mixer->chip->usb_id) + break; + if (i >= ARRAY_SIZE(rc_configs)) return 0; - } + mixer->rc_cfg = &rc_configs[i]; + len = mixer->rc_cfg->packet_length; + init_waitqueue_head(&mixer->rc_waitq); err = snd_hwdep_new(mixer->chip->card, "SB remote control", 0, &hwdep); if (err < 0) |