diff options
Diffstat (limited to 'sound/usb/mixer_scarlett2.c')
| -rw-r--r-- | sound/usb/mixer_scarlett2.c | 62 |
1 files changed, 59 insertions, 3 deletions
diff --git a/sound/usb/mixer_scarlett2.c b/sound/usb/mixer_scarlett2.c index 028b53b90348..4a2471496046 100644 --- a/sound/usb/mixer_scarlett2.c +++ b/sound/usb/mixer_scarlett2.c @@ -406,6 +406,7 @@ struct scarlett2_data { __u8 bInterval; int num_mux_srcs; int num_mux_dsts; + u32 firmware_version; u16 scarlett2_seq; u8 sync_updated; u8 vol_updated; @@ -1856,6 +1857,44 @@ static int scarlett2_add_new_ctl(struct usb_mixer_interface *mixer, return 0; } +/*** Firmware Version Control ***/ + +static int scarlett2_firmware_version_ctl_get( + struct snd_kcontrol *kctl, + struct snd_ctl_elem_value *ucontrol) +{ + struct usb_mixer_elem_info *elem = kctl->private_data; + struct scarlett2_data *private = elem->head.mixer->private_data; + + ucontrol->value.integer.value[0] = private->firmware_version; + + return 0; +} + +static int scarlett2_firmware_version_ctl_info( + struct snd_kcontrol *kctl, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 1; + + return 0; +} + +static const struct snd_kcontrol_new scarlett2_firmware_version_ctl = { + .iface = SNDRV_CTL_ELEM_IFACE_CARD, + .access = SNDRV_CTL_ELEM_ACCESS_READ, + .name = "", + .info = scarlett2_firmware_version_ctl_info, + .get = scarlett2_firmware_version_ctl_get +}; + +static int scarlett2_add_firmware_version_ctl( + struct usb_mixer_interface *mixer) +{ + return scarlett2_add_new_ctl(mixer, &scarlett2_firmware_version_ctl, + 0, 0, "Firmware Version", NULL); +} /*** Sync Control ***/ /* Update sync control after receiving notification that the status @@ -3854,7 +3893,8 @@ static int scarlett2_usb_init(struct usb_mixer_interface *mixer) { struct usb_device *dev = mixer->chip->dev; struct scarlett2_data *private = mixer->private_data; - u8 buf[24]; + u8 step0_buf[24]; + u8 step2_buf[84]; int err; if (usb_pipe_type_check(dev, usb_sndctrlpipe(dev, 0))) @@ -3862,7 +3902,8 @@ static int scarlett2_usb_init(struct usb_mixer_interface *mixer) /* step 0 */ err = scarlett2_usb_rx(dev, private->bInterfaceNumber, - SCARLETT2_USB_CMD_INIT, buf, sizeof(buf)); + SCARLETT2_USB_CMD_INIT, + step0_buf, sizeof(step0_buf)); if (err < 0) return err; @@ -3874,7 +3915,19 @@ static int scarlett2_usb_init(struct usb_mixer_interface *mixer) /* step 2 */ private->scarlett2_seq = 1; - return scarlett2_usb(mixer, SCARLETT2_USB_INIT_2, NULL, 0, NULL, 84); + err = scarlett2_usb(mixer, SCARLETT2_USB_INIT_2, + NULL, 0, + step2_buf, sizeof(step2_buf)); + if (err < 0) + return err; + + /* extract 4-byte firmware version from step2_buf[8] */ + private->firmware_version = le32_to_cpu(*(__le32 *)(step2_buf + 8)); + usb_audio_info(mixer->chip, + "Firmware version %d\n", + private->firmware_version); + + return 0; } /* Read configuration from the interface on start */ @@ -4192,6 +4245,9 @@ static int snd_scarlett2_controls_create( if (err < 0) return err; + /* Add firmware version control */ + err = scarlett2_add_firmware_version_ctl(mixer); + /* Read volume levels and controls from the interface */ err = scarlett2_read_configs(mixer); if (err < 0) |