#include <sound/control.h>
#include <sound/hwdep.h>
#include <sound/info.h>
+#include <sound/tlv.h>
#include "usbaudio.h"
/* 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;
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;
cval->res = 1;
if (val < cval->min)
return 0;
- else if (val > cval->max)
- return (cval->max - cval->min) / cval->res;
+ else if (val >= cval->max)
+ return (cval->max - cval->min + cval->res - 1) / cval->res;
else
return (val - cval->min) / cval->res;
}
return set_ctl_value(cval, SET_CUR, (cval->control << 8) | channel, value);
}
+/*
+ * TLV callback for mixer volume controls
+ */
+static int mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
+ unsigned int size, unsigned int __user *_tlv)
+{
+ struct usb_mixer_elem_info *cval = kcontrol->private_data;
+ DECLARE_TLV_DB_SCALE(scale, 0, 0, 0);
+
+ if (size < sizeof(scale))
+ return -ENOMEM;
+ /* USB descriptions contain the dB scale in 1/256 dB unit
+ * while ALSA TLV contains in 1/100 dB unit
+ */
+ scale[2] = (convert_signed_value(cval, cval->min) * 100) / 256;
+ scale[3] = (convert_signed_value(cval, cval->res) * 100) / 256;
+ if (copy_to_user(_tlv, scale, sizeof(scale)))
+ return -EFAULT;
+ return 0;
+}
/*
* parser routines begin here...
}
if (cval->res == 0)
cval->res = 1;
+
+ /* Additional checks for the proper resolution
+ *
+ * Some devices report smaller resolutions than actually
+ * reacting. They don't return errors but simply clip
+ * to the lower aligned value.
+ */
+ if (cval->min + cval->res < cval->max) {
+ int last_valid_res = cval->res;
+ int saved, test, check;
+ get_cur_mix_value(cval, minchn, &saved);
+ for (;;) {
+ test = saved;
+ if (test < cval->max)
+ test += cval->res;
+ else
+ test -= cval->res;
+ if (test < cval->min || test > cval->max ||
+ set_cur_mix_value(cval, minchn, test) ||
+ get_cur_mix_value(cval, minchn, &check)) {
+ cval->res = last_valid_res;
+ break;
+ }
+ if (test == check)
+ break;
+ cval->res *= 2;
+ }
+ set_cur_mix_value(cval, minchn, saved);
+ }
+
cval->initialized = 1;
}
return 0;
if (! cval->initialized)
get_min_max(cval, 0);
uinfo->value.integer.min = 0;
- uinfo->value.integer.max = (cval->max - cval->min) / cval->res;
+ uinfo->value.integer.max =
+ (cval->max - cval->min + cval->res - 1) / cval->res;
}
return 0;
}
}
strlcat(kctl->id.name + len, control == USB_FEATURE_MUTE ? " Switch" : " Volume",
sizeof(kctl->id.name));
+ if (control == USB_FEATURE_VOLUME) {
+ kctl->tlv.c = mixer_vol_tlv;
+ kctl->vd[0].access |=
+ SNDRV_CTL_ELEM_ACCESS_TLV_READ |
+ SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
+ }
break;
default:
namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL);
if (! namelist[i]) {
snd_printk(KERN_ERR "cannot malloc\n");
- while (--i > 0)
+ while (i--)
kfree(namelist[i]);
kfree(namelist);
kfree(cval);
kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval);
if (! kctl) {
snd_printk(KERN_ERR "cannot malloc kcontrol\n");
+ kfree(namelist);
kfree(cval);
return -ENOMEM;
}
kfree(mixer->urb->transfer_buffer);
usb_free_urb(mixer->urb);
}
- if (mixer->rc_urb)
- usb_free_urb(mixer->rc_urb);
+ usb_free_urb(mixer->rc_urb);
kfree(mixer->rc_setup_packet);
kfree(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) {
}
}
-static void snd_usb_mixer_status_complete(struct urb *urb, struct pt_regs *regs)
+static void snd_usb_mixer_status_complete(struct urb *urb)
{
struct usb_mixer_interface *mixer = urb->context;
return 0;
}
-static void snd_usb_soundblaster_remote_complete(struct urb *urb,
- struct pt_regs *regs)
+static void snd_usb_soundblaster_remote_complete(struct urb *urb)
{
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);
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)
if ((err = snd_audigy2nx_controls_create(mixer)) < 0)
goto _error;
if (!snd_card_proc_new(chip->card, "audigy2nx", &entry))
- snd_info_set_text_ops(entry, mixer, 1024,
+ snd_info_set_text_ops(entry, mixer,
snd_audigy2nx_proc_read);
}
struct usb_mixer_interface *mixer;
mixer = list_entry(p, struct usb_mixer_interface, list);
- if (mixer->urb)
- usb_kill_urb(mixer->urb);
- if (mixer->rc_urb)
- usb_kill_urb(mixer->rc_urb);
+ usb_kill_urb(mixer->urb);
+ usb_kill_urb(mixer->rc_urb);
}
git://git.onelab.eu / linux-2.6.git / blobdiff