ALSA: usb-mixer: Add support for Audio Class v2.0
USB Audio Class v2.0 compliant devices have different descriptors and a different way of setting/getting min/max/res/cur properties. This patch adds support for them. Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Daniel Mack
Takashi Iwai
parent
99fc86450c
commit
23caaf19b1
4 changed files with 343 additions and 100 deletions
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@ -43,6 +43,53 @@ struct uac_clock_selector_descriptor {
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__u8 baCSourceID[];
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} __attribute__((packed));
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/* 4.7.2.4 Input terminal descriptor */
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struct uac2_input_terminal_descriptor {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubtype;
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__u8 bTerminalID;
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__u16 wTerminalType;
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__u8 bAssocTerminal;
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__u8 bCSourceID;
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__u8 bNrChannels;
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__u32 bmChannelConfig;
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__u8 iChannelNames;
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__u16 bmControls;
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__u8 iTerminal;
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} __attribute__((packed));
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/* 4.7.2.5 Output terminal descriptor */
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struct uac2_output_terminal_descriptor {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubtype;
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__u8 bTerminalID;
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__u16 wTerminalType;
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__u8 bAssocTerminal;
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__u8 bSourceID;
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__u8 bCSourceID;
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__u16 bmControls;
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__u8 iTerminal;
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} __attribute__((packed));
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/* 4.7.2.8 Feature Unit Descriptor */
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struct uac2_feature_unit_descriptor {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubtype;
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__u8 bUnitID;
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__u8 bSourceID;
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/* bmaControls is actually u32,
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* but u8 is needed for the hybrid parser */
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__u8 bmaControls[0]; /* variable length */
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} __attribute__((packed));
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/* 4.9.2 Class-Specific AS Interface Descriptor */
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struct uac_as_header_descriptor_v2 {
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@ -196,20 +196,33 @@ static inline __u8 uac_mixer_unit_bNrChannels(struct uac_mixer_unit_descriptor *
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return desc->baSourceID[desc->bNrInPins];
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}
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static inline __u16 uac_mixer_unit_wChannelConfig(struct uac_mixer_unit_descriptor *desc)
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static inline __u32 uac_mixer_unit_wChannelConfig(struct uac_mixer_unit_descriptor *desc,
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int protocol)
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{
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return (desc->baSourceID[desc->bNrInPins + 2] << 8) |
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desc->baSourceID[desc->bNrInPins + 1];
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if (protocol == UAC_VERSION_1)
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return (desc->baSourceID[desc->bNrInPins + 2] << 8) |
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desc->baSourceID[desc->bNrInPins + 1];
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else
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return (desc->baSourceID[desc->bNrInPins + 4] << 24) |
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(desc->baSourceID[desc->bNrInPins + 3] << 16) |
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(desc->baSourceID[desc->bNrInPins + 2] << 8) |
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(desc->baSourceID[desc->bNrInPins + 1]);
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}
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static inline __u8 uac_mixer_unit_iChannelNames(struct uac_mixer_unit_descriptor *desc)
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static inline __u8 uac_mixer_unit_iChannelNames(struct uac_mixer_unit_descriptor *desc,
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int protocol)
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{
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return desc->baSourceID[desc->bNrInPins + 3];
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return (protocol == UAC_VERSION_1) ?
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desc->baSourceID[desc->bNrInPins + 3] :
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desc->baSourceID[desc->bNrInPins + 5];
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}
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static inline __u8 *uac_mixer_unit_bmControls(struct uac_mixer_unit_descriptor *desc)
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static inline __u8 *uac_mixer_unit_bmControls(struct uac_mixer_unit_descriptor *desc,
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int protocol)
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{
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return &desc->baSourceID[desc->bNrInPins + 4];
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return (protocol == UAC_VERSION_1) ?
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&desc->baSourceID[desc->bNrInPins + 4] :
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&desc->baSourceID[desc->bNrInPins + 6];
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}
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static inline __u8 uac_mixer_unit_iMixer(struct uac_mixer_unit_descriptor *desc)
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@ -267,36 +280,54 @@ static inline __u8 uac_processing_unit_bNrChannels(struct uac_processing_unit_de
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return desc->baSourceID[desc->bNrInPins];
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}
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static inline __u16 uac_processing_unit_wChannelConfig(struct uac_processing_unit_descriptor *desc)
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static inline __u32 uac_processing_unit_wChannelConfig(struct uac_processing_unit_descriptor *desc,
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int protocol)
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{
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return (desc->baSourceID[desc->bNrInPins + 2] << 8) |
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desc->baSourceID[desc->bNrInPins + 1];
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if (protocol == UAC_VERSION_1)
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return (desc->baSourceID[desc->bNrInPins + 2] << 8) |
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desc->baSourceID[desc->bNrInPins + 1];
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else
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return (desc->baSourceID[desc->bNrInPins + 4] << 24) |
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(desc->baSourceID[desc->bNrInPins + 3] << 16) |
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(desc->baSourceID[desc->bNrInPins + 2] << 8) |
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(desc->baSourceID[desc->bNrInPins + 1]);
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}
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static inline __u8 uac_processing_unit_iChannelNames(struct uac_processing_unit_descriptor *desc)
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static inline __u8 uac_processing_unit_iChannelNames(struct uac_processing_unit_descriptor *desc,
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int protocol)
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{
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return desc->baSourceID[desc->bNrInPins + 3];
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return (protocol == UAC_VERSION_1) ?
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desc->baSourceID[desc->bNrInPins + 3] :
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desc->baSourceID[desc->bNrInPins + 5];
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}
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static inline __u8 uac_processing_unit_bControlSize(struct uac_processing_unit_descriptor *desc)
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static inline __u8 uac_processing_unit_bControlSize(struct uac_processing_unit_descriptor *desc,
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int protocol)
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{
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return desc->baSourceID[desc->bNrInPins + 4];
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return (protocol == UAC_VERSION_1) ?
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desc->baSourceID[desc->bNrInPins + 4] :
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desc->baSourceID[desc->bNrInPins + 6];
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}
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static inline __u8 *uac_processing_unit_bmControls(struct uac_processing_unit_descriptor *desc)
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static inline __u8 *uac_processing_unit_bmControls(struct uac_processing_unit_descriptor *desc,
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int protocol)
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{
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return &desc->baSourceID[desc->bNrInPins + 5];
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return (protocol == UAC_VERSION_1) ?
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&desc->baSourceID[desc->bNrInPins + 5] :
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&desc->baSourceID[desc->bNrInPins + 7];
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}
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static inline __u8 uac_processing_unit_iProcessing(struct uac_processing_unit_descriptor *desc)
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static inline __u8 uac_processing_unit_iProcessing(struct uac_processing_unit_descriptor *desc,
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int protocol)
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{
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__u8 control_size = uac_processing_unit_bControlSize(desc);
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__u8 control_size = uac_processing_unit_bControlSize(desc, protocol);
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return desc->baSourceID[desc->bNrInPins + control_size];
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}
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static inline __u8 *uac_processing_unit_specific(struct uac_processing_unit_descriptor *desc)
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static inline __u8 *uac_processing_unit_specific(struct uac_processing_unit_descriptor *desc,
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int protocol)
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{
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__u8 control_size = uac_processing_unit_bControlSize(desc);
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__u8 control_size = uac_processing_unit_bControlSize(desc, protocol);
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return &desc->baSourceID[desc->bNrInPins + control_size + 1];
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}
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@ -33,6 +33,7 @@
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#include <linux/string.h>
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#include <linux/usb.h>
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#include <linux/usb/audio.h>
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#include <linux/usb/audio-v2.h>
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#include <sound/core.h>
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#include <sound/control.h>
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@ -197,6 +198,7 @@ static int check_mapped_selector_name(struct mixer_build *state, int unitid,
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/*
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* find an audio control unit with the given unit id
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* this doesn't return any clock related units, so they need to be handled elsewhere
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*/
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static void *find_audio_control_unit(struct mixer_build *state, unsigned char unit)
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{
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@ -205,7 +207,7 @@ static void *find_audio_control_unit(struct mixer_build *state, unsigned char un
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p = NULL;
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while ((p = snd_usb_find_desc(state->buffer, state->buflen, p,
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USB_DT_CS_INTERFACE)) != NULL) {
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if (p[0] >= 4 && p[2] >= UAC_INPUT_TERMINAL && p[2] <= UAC_EXTENSION_UNIT_V1 && p[3] == unit)
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if (p[0] >= 4 && p[2] >= UAC_INPUT_TERMINAL && p[2] <= UAC2_EXTENSION_UNIT_V2 && p[3] == unit)
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return p;
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}
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return NULL;
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@ -302,7 +304,7 @@ static int get_abs_value(struct usb_mixer_elem_info *cval, int val)
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* retrieve a mixer value
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*/
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static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret)
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static int get_ctl_value_v1(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret)
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{
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unsigned char buf[2];
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int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
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@ -324,6 +326,58 @@ static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int vali
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return -EINVAL;
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}
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static int get_ctl_value_v2(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret)
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{
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unsigned char buf[14]; /* enough space for one range of 4 bytes */
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unsigned char *val;
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int ret;
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__u8 bRequest;
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bRequest = (request == UAC_GET_CUR) ?
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UAC2_CS_CUR : UAC2_CS_RANGE;
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ret = snd_usb_ctl_msg(cval->mixer->chip->dev,
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usb_rcvctrlpipe(cval->mixer->chip->dev, 0),
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bRequest,
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USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
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validx, cval->mixer->ctrlif | (cval->id << 8),
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buf, sizeof(buf), 1000);
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if (ret < 0) {
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snd_printdd(KERN_ERR "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n",
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request, validx, cval->mixer->ctrlif | (cval->id << 8), cval->val_type);
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return ret;
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}
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switch (request) {
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case UAC_GET_CUR:
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val = buf;
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break;
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case UAC_GET_MIN:
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val = buf + sizeof(__u16);
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break;
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case UAC_GET_MAX:
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val = buf + sizeof(__u16) * 2;
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break;
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case UAC_GET_RES:
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val = buf + sizeof(__u16) * 3;
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break;
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default:
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return -EINVAL;
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}
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*value_ret = convert_signed_value(cval, snd_usb_combine_bytes(val, sizeof(__u16)));
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return 0;
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}
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static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int validx, int *value_ret)
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{
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return (cval->mixer->protocol == UAC_VERSION_1) ?
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get_ctl_value_v1(cval, request, validx, value_ret) :
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get_ctl_value_v2(cval, request, validx, value_ret);
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}
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static int get_cur_ctl_value(struct usb_mixer_elem_info *cval, int validx, int *value)
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{
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return get_ctl_value(cval, UAC_GET_CUR, validx, value);
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@ -348,8 +402,7 @@ static int get_cur_mix_value(struct usb_mixer_elem_info *cval,
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err = get_cur_mix_raw(cval, channel, value);
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if (err < 0) {
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if (!cval->mixer->ignore_ctl_error)
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snd_printd(KERN_ERR "cannot get current value for "
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"control %d ch %d: err = %d\n",
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snd_printd(KERN_ERR "cannot get current value for control %d ch %d: err = %d\n",
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cval->control, channel, err);
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return err;
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}
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@ -367,8 +420,22 @@ int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
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int request, int validx, int value_set)
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{
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unsigned char buf[2];
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int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
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int timeout = 10;
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int val_len, timeout = 10;
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if (cval->mixer->protocol == UAC_VERSION_1) {
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val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
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} else { /* UAC_VERSION_2 */
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/* audio class v2 controls are always 2 bytes in size */
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val_len = sizeof(__u16);
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/* FIXME */
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if (request != UAC_SET_CUR) {
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snd_printdd(KERN_WARNING "RANGE setting not yet supported\n");
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return -EINVAL;
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}
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request = UAC2_CS_CUR;
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}
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value_set = convert_bytes_value(cval, value_set);
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buf[0] = value_set & 0xff;
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@ -564,46 +631,65 @@ static int get_term_name(struct mixer_build *state, struct usb_audio_term *iterm
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*/
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static int check_input_term(struct mixer_build *state, int id, struct usb_audio_term *term)
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{
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unsigned char *p1;
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void *p1;
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memset(term, 0, sizeof(*term));
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while ((p1 = find_audio_control_unit(state, id)) != NULL) {
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unsigned char *hdr = p1;
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term->id = id;
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switch (p1[2]) {
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switch (hdr[2]) {
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case UAC_INPUT_TERMINAL:
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term->type = combine_word(p1 + 4);
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term->channels = p1[7];
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term->chconfig = combine_word(p1 + 8);
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term->name = p1[11];
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if (state->mixer->protocol == UAC_VERSION_1) {
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struct uac_input_terminal_descriptor *d = p1;
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term->type = le16_to_cpu(d->wTerminalType);
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term->channels = d->bNrChannels;
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term->chconfig = le16_to_cpu(d->wChannelConfig);
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term->name = d->iTerminal;
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} else { /* UAC_VERSION_2 */
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struct uac2_input_terminal_descriptor *d = p1;
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term->type = le16_to_cpu(d->wTerminalType);
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term->channels = d->bNrChannels;
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term->chconfig = le32_to_cpu(d->bmChannelConfig);
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term->name = d->iTerminal;
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}
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return 0;
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case UAC_FEATURE_UNIT:
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id = p1[4];
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case UAC_FEATURE_UNIT: {
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/* the header is the same for v1 and v2 */
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struct uac_feature_unit_descriptor *d = p1;
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id = d->bUnitID;
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break; /* continue to parse */
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case UAC_MIXER_UNIT:
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term->type = p1[2] << 16; /* virtual type */
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term->channels = p1[5 + p1[4]];
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term->chconfig = combine_word(p1 + 6 + p1[4]);
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term->name = p1[p1[0] - 1];
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}
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case UAC_MIXER_UNIT: {
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struct uac_mixer_unit_descriptor *d = p1;
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term->type = d->bDescriptorSubtype << 16; /* virtual type */
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term->channels = uac_mixer_unit_bNrChannels(d);
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term->chconfig = uac_mixer_unit_wChannelConfig(d, state->mixer->protocol);
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term->name = uac_mixer_unit_iMixer(d);
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return 0;
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case UAC_SELECTOR_UNIT:
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}
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case UAC_SELECTOR_UNIT: {
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struct uac_selector_unit_descriptor *d = p1;
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/* call recursively to retrieve the channel info */
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if (check_input_term(state, p1[5], term) < 0)
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if (check_input_term(state, d->baSourceID[0], term) < 0)
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return -ENODEV;
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term->type = p1[2] << 16; /* virtual type */
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term->type = d->bDescriptorSubtype << 16; /* virtual type */
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term->id = id;
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term->name = p1[9 + p1[0] - 1];
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term->name = uac_selector_unit_iSelector(d);
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return 0;
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}
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case UAC_PROCESSING_UNIT_V1:
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case UAC_EXTENSION_UNIT_V1:
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if (p1[6] == 1) {
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id = p1[7];
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case UAC_EXTENSION_UNIT_V1: {
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struct uac_processing_unit_descriptor *d = p1;
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if (d->bNrInPins) {
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id = d->baSourceID[0];
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break; /* continue to parse */
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}
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term->type = p1[2] << 16; /* virtual type */
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term->channels = p1[7 + p1[6]];
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term->chconfig = combine_word(p1 + 8 + p1[6]);
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term->name = p1[12 + p1[6] + p1[11 + p1[6]]];
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term->type = d->bDescriptorSubtype << 16; /* virtual type */
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term->channels = uac_processing_unit_bNrChannels(d);
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term->chconfig = uac_processing_unit_wChannelConfig(d, state->mixer->protocol);
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term->name = uac_processing_unit_iProcessing(d, state->mixer->protocol);
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return 0;
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}
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default:
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return -ENODEV;
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}
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@ -850,6 +936,15 @@ static struct snd_kcontrol_new usb_feature_unit_ctl = {
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.put = mixer_ctl_feature_put,
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};
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/* the read-only variant */
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static struct snd_kcontrol_new usb_feature_unit_ctl_ro = {
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
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||||
.name = "", /* will be filled later manually */
|
||||
.info = mixer_ctl_feature_info,
|
||||
.get = mixer_ctl_feature_get,
|
||||
.put = NULL,
|
||||
};
|
||||
|
||||
|
||||
/*
|
||||
* build a feature control
|
||||
|
|
@ -862,7 +957,8 @@ static size_t append_ctl_name(struct snd_kcontrol *kctl, const char *str)
|
|||
|
||||
static void build_feature_ctl(struct mixer_build *state, void *raw_desc,
|
||||
unsigned int ctl_mask, int control,
|
||||
struct usb_audio_term *iterm, int unitid)
|
||||
struct usb_audio_term *iterm, int unitid,
|
||||
int read_only)
|
||||
{
|
||||
struct uac_feature_unit_descriptor *desc = raw_desc;
|
||||
unsigned int len = 0;
|
||||
|
|
@ -906,7 +1002,11 @@ static void build_feature_ctl(struct mixer_build *state, void *raw_desc,
|
|||
/* get min/max values */
|
||||
get_min_max(cval, 0);
|
||||
|
||||
kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
|
||||
if (read_only)
|
||||
kctl = snd_ctl_new1(&usb_feature_unit_ctl_ro, cval);
|
||||
else
|
||||
kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
|
||||
|
||||
if (! kctl) {
|
||||
snd_printk(KERN_ERR "cannot malloc kcontrol\n");
|
||||
kfree(cval);
|
||||
|
|
@ -1016,24 +1116,34 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void
|
|||
struct usb_audio_term iterm;
|
||||
unsigned int master_bits, first_ch_bits;
|
||||
int err, csize;
|
||||
struct uac_feature_unit_descriptor *ftr = _ftr;
|
||||
struct uac_feature_unit_descriptor *hdr = _ftr;
|
||||
__u8 *bmaControls;
|
||||
|
||||
if (ftr->bLength < 7 || ! (csize = ftr->bControlSize) || ftr->bLength < 7 + csize) {
|
||||
if (state->mixer->protocol == UAC_VERSION_1) {
|
||||
csize = hdr->bControlSize;
|
||||
channels = (hdr->bLength - 7) / csize - 1;
|
||||
bmaControls = hdr->bmaControls;
|
||||
} else {
|
||||
struct uac2_feature_unit_descriptor *ftr = _ftr;
|
||||
csize = 4;
|
||||
channels = (hdr->bLength - 6) / 4;
|
||||
bmaControls = ftr->bmaControls;
|
||||
}
|
||||
|
||||
if (hdr->bLength < 7 || !csize || hdr->bLength < 7 + csize) {
|
||||
snd_printk(KERN_ERR "usbaudio: unit %u: invalid UAC_FEATURE_UNIT descriptor\n", unitid);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* parse the source unit */
|
||||
if ((err = parse_audio_unit(state, ftr->bSourceID)) < 0)
|
||||
if ((err = parse_audio_unit(state, hdr->bSourceID)) < 0)
|
||||
return err;
|
||||
|
||||
/* determine the input source type and name */
|
||||
if (check_input_term(state, ftr->bSourceID, &iterm) < 0)
|
||||
if (check_input_term(state, hdr->bSourceID, &iterm) < 0)
|
||||
return -EINVAL;
|
||||
|
||||
channels = (ftr->bLength - 7) / csize - 1;
|
||||
|
||||
master_bits = snd_usb_combine_bytes(ftr->bmaControls, csize);
|
||||
master_bits = snd_usb_combine_bytes(bmaControls, csize);
|
||||
/* master configuration quirks */
|
||||
switch (state->chip->usb_id) {
|
||||
case USB_ID(0x08bb, 0x2702):
|
||||
|
|
@ -1044,21 +1154,54 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void
|
|||
break;
|
||||
}
|
||||
if (channels > 0)
|
||||
first_ch_bits = snd_usb_combine_bytes(ftr->bmaControls + csize, csize);
|
||||
first_ch_bits = snd_usb_combine_bytes(bmaControls + csize, csize);
|
||||
else
|
||||
first_ch_bits = 0;
|
||||
/* check all control types */
|
||||
for (i = 0; i < 10; i++) {
|
||||
unsigned int ch_bits = 0;
|
||||
for (j = 0; j < channels; j++) {
|
||||
unsigned int mask = snd_usb_combine_bytes(ftr->bmaControls + csize * (j+1), csize);
|
||||
if (mask & (1 << i))
|
||||
ch_bits |= (1 << j);
|
||||
|
||||
if (state->mixer->protocol == UAC_VERSION_1) {
|
||||
/* check all control types */
|
||||
for (i = 0; i < 10; i++) {
|
||||
unsigned int ch_bits = 0;
|
||||
for (j = 0; j < channels; j++) {
|
||||
unsigned int mask = snd_usb_combine_bytes(bmaControls + csize * (j+1), csize);
|
||||
if (mask & (1 << i))
|
||||
ch_bits |= (1 << j);
|
||||
}
|
||||
/* audio class v1 controls are never read-only */
|
||||
if (ch_bits & 1) /* the first channel must be set (for ease of programming) */
|
||||
build_feature_ctl(state, _ftr, ch_bits, i, &iterm, unitid, 0);
|
||||
if (master_bits & (1 << i))
|
||||
build_feature_ctl(state, _ftr, 0, i, &iterm, unitid, 0);
|
||||
}
|
||||
} else { /* UAC_VERSION_2 */
|
||||
for (i = 0; i < 30/2; i++) {
|
||||
/* From the USB Audio spec v2.0:
|
||||
bmaControls() is a (ch+1)-element array of 4-byte bitmaps,
|
||||
each containing a set of bit pairs. If a Control is present,
|
||||
it must be Host readable. If a certain Control is not
|
||||
present then the bit pair must be set to 0b00.
|
||||
If a Control is present but read-only, the bit pair must be
|
||||
set to 0b01. If a Control is also Host programmable, the bit
|
||||
pair must be set to 0b11. The value 0b10 is not allowed. */
|
||||
unsigned int ch_bits = 0;
|
||||
unsigned int ch_read_only = 0;
|
||||
|
||||
for (j = 0; j < channels; j++) {
|
||||
unsigned int mask = snd_usb_combine_bytes(bmaControls + csize * (j+1), csize);
|
||||
if (mask & (1 << (i * 2))) {
|
||||
ch_bits |= (1 << j);
|
||||
if (~mask & (1 << ((i * 2) + 1)))
|
||||
ch_read_only |= (1 << j);
|
||||
}
|
||||
}
|
||||
|
||||
/* FIXME: the whole unit is read-only if any of the channels is marked read-only */
|
||||
if (ch_bits & 1) /* the first channel must be set (for ease of programming) */
|
||||
build_feature_ctl(state, _ftr, ch_bits, i, &iterm, unitid, !!ch_read_only);
|
||||
if (master_bits & (1 << i * 2))
|
||||
build_feature_ctl(state, _ftr, 0, i, &iterm, unitid,
|
||||
~master_bits & (1 << ((i * 2) + 1)));
|
||||
}
|
||||
if (ch_bits & 1) /* the first channel must be set (for ease of programming) */
|
||||
build_feature_ctl(state, _ftr, ch_bits, i, &iterm, unitid);
|
||||
if (master_bits & (1 << i))
|
||||
build_feature_ctl(state, _ftr, 0, i, &iterm, unitid);
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
|
@ -1100,7 +1243,7 @@ static void build_mixer_unit_ctl(struct mixer_build *state,
|
|||
cval->control = in_ch + 1; /* based on 1 */
|
||||
cval->val_type = USB_MIXER_S16;
|
||||
for (i = 0; i < num_outs; i++) {
|
||||
if (check_matrix_bitmap(uac_mixer_unit_bmControls(desc), in_ch, i, num_outs)) {
|
||||
if (check_matrix_bitmap(uac_mixer_unit_bmControls(desc, state->mixer->protocol), in_ch, i, num_outs)) {
|
||||
cval->cmask |= (1 << i);
|
||||
cval->channels++;
|
||||
}
|
||||
|
|
@ -1164,7 +1307,7 @@ static int parse_audio_mixer_unit(struct mixer_build *state, int unitid, void *r
|
|||
int och, ich_has_controls = 0;
|
||||
|
||||
for (och = 0; och < num_outs; ++och) {
|
||||
if (check_matrix_bitmap(uac_mixer_unit_bmControls(desc),
|
||||
if (check_matrix_bitmap(uac_mixer_unit_bmControls(desc, state->mixer->protocol),
|
||||
ich, och, num_outs)) {
|
||||
ich_has_controls = 1;
|
||||
break;
|
||||
|
|
@ -1343,7 +1486,8 @@ static int build_audio_procunit(struct mixer_build *state, int unitid, void *raw
|
|||
0, NULL, default_value_info
|
||||
};
|
||||
|
||||
if (desc->bLength < 13 || desc->bLength < 13 + num_ins || desc->bLength < num_ins + uac_processing_unit_bControlSize(desc)) {
|
||||
if (desc->bLength < 13 || desc->bLength < 13 + num_ins ||
|
||||
desc->bLength < num_ins + uac_processing_unit_bControlSize(desc, state->mixer->protocol)) {
|
||||
snd_printk(KERN_ERR "invalid %s descriptor (id %d)\n", name, unitid);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
|
@ -1361,7 +1505,7 @@ static int build_audio_procunit(struct mixer_build *state, int unitid, void *raw
|
|||
info = &default_info;
|
||||
|
||||
for (valinfo = info->values; valinfo->control; valinfo++) {
|
||||
__u8 *controls = uac_processing_unit_bmControls(desc);
|
||||
__u8 *controls = uac_processing_unit_bmControls(desc, state->mixer->protocol);
|
||||
|
||||
if (! (controls[valinfo->control / 8] & (1 << ((valinfo->control % 8) - 1))))
|
||||
continue;
|
||||
|
|
@ -1381,7 +1525,7 @@ static int build_audio_procunit(struct mixer_build *state, int unitid, void *raw
|
|||
|
||||
/* get min/max values */
|
||||
if (type == USB_PROC_UPDOWN && cval->control == USB_PROC_UPDOWN_MODE_SEL) {
|
||||
__u8 *control_spec = uac_processing_unit_specific(desc);
|
||||
__u8 *control_spec = uac_processing_unit_specific(desc, state->mixer->protocol);
|
||||
/* FIXME: hard-coded */
|
||||
cval->min = 1;
|
||||
cval->max = control_spec[0];
|
||||
|
|
@ -1414,7 +1558,7 @@ static int build_audio_procunit(struct mixer_build *state, int unitid, void *raw
|
|||
else if (info->name)
|
||||
strlcpy(kctl->id.name, info->name, sizeof(kctl->id.name));
|
||||
else {
|
||||
nameid = uac_processing_unit_iProcessing(desc);
|
||||
nameid = uac_processing_unit_iProcessing(desc, state->mixer->protocol);
|
||||
len = 0;
|
||||
if (nameid)
|
||||
len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name));
|
||||
|
|
@ -1676,9 +1820,17 @@ static int parse_audio_unit(struct mixer_build *state, int unitid)
|
|||
case UAC_FEATURE_UNIT:
|
||||
return parse_audio_feature_unit(state, unitid, p1);
|
||||
case UAC_PROCESSING_UNIT_V1:
|
||||
return parse_audio_processing_unit(state, unitid, p1);
|
||||
/* UAC2_EFFECT_UNIT has the same value */
|
||||
if (state->mixer->protocol == UAC_VERSION_1)
|
||||
return parse_audio_processing_unit(state, unitid, p1);
|
||||
else
|
||||
return 0; /* FIXME - effect units not implemented yet */
|
||||
case UAC_EXTENSION_UNIT_V1:
|
||||
return parse_audio_extension_unit(state, unitid, p1);
|
||||
/* UAC2_PROCESSING_UNIT_V2 has the same value */
|
||||
if (state->mixer->protocol == UAC_VERSION_1)
|
||||
return parse_audio_extension_unit(state, unitid, p1);
|
||||
else /* UAC_VERSION_2 */
|
||||
return parse_audio_processing_unit(state, unitid, p1);
|
||||
default:
|
||||
snd_printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]);
|
||||
return -EINVAL;
|
||||
|
|
@ -1711,11 +1863,11 @@ static int snd_usb_mixer_dev_free(struct snd_device *device)
|
|||
*/
|
||||
static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
|
||||
{
|
||||
struct uac_output_terminal_descriptor_v1 *desc;
|
||||
struct mixer_build state;
|
||||
int err;
|
||||
const struct usbmix_ctl_map *map;
|
||||
struct usb_host_interface *hostif;
|
||||
void *p;
|
||||
|
||||
hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0];
|
||||
memset(&state, 0, sizeof(state));
|
||||
|
|
@ -1734,18 +1886,35 @@ static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
|
|||
}
|
||||
}
|
||||
|
||||
desc = NULL;
|
||||
while ((desc = snd_usb_find_csint_desc(hostif->extra, hostif->extralen, desc, UAC_OUTPUT_TERMINAL)) != NULL) {
|
||||
if (desc->bLength < 9)
|
||||
continue; /* invalid descriptor? */
|
||||
set_bit(desc->bTerminalID, state.unitbitmap); /* mark terminal ID as visited */
|
||||
state.oterm.id = desc->bTerminalID;
|
||||
state.oterm.type = le16_to_cpu(desc->wTerminalType);
|
||||
state.oterm.name = desc->iTerminal;
|
||||
err = parse_audio_unit(&state, desc->bSourceID);
|
||||
if (err < 0)
|
||||
return err;
|
||||
p = NULL;
|
||||
while ((p = snd_usb_find_csint_desc(hostif->extra, hostif->extralen, p, UAC_OUTPUT_TERMINAL)) != NULL) {
|
||||
if (mixer->protocol == UAC_VERSION_1) {
|
||||
struct uac_output_terminal_descriptor_v1 *desc = p;
|
||||
|
||||
if (desc->bLength < sizeof(*desc))
|
||||
continue; /* invalid descriptor? */
|
||||
set_bit(desc->bTerminalID, state.unitbitmap); /* mark terminal ID as visited */
|
||||
state.oterm.id = desc->bTerminalID;
|
||||
state.oterm.type = le16_to_cpu(desc->wTerminalType);
|
||||
state.oterm.name = desc->iTerminal;
|
||||
err = parse_audio_unit(&state, desc->bSourceID);
|
||||
if (err < 0)
|
||||
return err;
|
||||
} else { /* UAC_VERSION_2 */
|
||||
struct uac2_output_terminal_descriptor *desc = p;
|
||||
|
||||
if (desc->bLength < sizeof(*desc))
|
||||
continue; /* invalid descriptor? */
|
||||
set_bit(desc->bTerminalID, state.unitbitmap); /* mark terminal ID as visited */
|
||||
state.oterm.id = desc->bTerminalID;
|
||||
state.oterm.type = le16_to_cpu(desc->wTerminalType);
|
||||
state.oterm.name = desc->iTerminal;
|
||||
err = parse_audio_unit(&state, desc->bSourceID);
|
||||
if (err < 0)
|
||||
return err;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -1868,7 +2037,7 @@ int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
|
|||
struct usb_mixer_interface *mixer;
|
||||
struct snd_info_entry *entry;
|
||||
struct usb_host_interface *host_iface;
|
||||
int err, protocol;
|
||||
int err;
|
||||
|
||||
strcpy(chip->card->mixername, "USB Mixer");
|
||||
|
||||
|
|
@ -1886,14 +2055,7 @@ int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
|
|||
}
|
||||
|
||||
host_iface = &usb_ifnum_to_if(chip->dev, ctrlif)->altsetting[0];
|
||||
protocol = host_iface->desc.bInterfaceProtocol;
|
||||
|
||||
/* FIXME! */
|
||||
if (protocol != UAC_VERSION_1) {
|
||||
snd_printk(KERN_WARNING "mixer interface protocol 0x%02x not yet supported\n",
|
||||
protocol);
|
||||
return 0;
|
||||
}
|
||||
mixer->protocol = host_iface->desc.bInterfaceProtocol;
|
||||
|
||||
if ((err = snd_usb_mixer_controls(mixer)) < 0 ||
|
||||
(err = snd_usb_mixer_status_create(mixer)) < 0)
|
||||
|
|
|
|||
|
|
@ -10,6 +10,9 @@ struct usb_mixer_interface {
|
|||
/* array[MAX_ID_ELEMS], indexed by unit id */
|
||||
struct usb_mixer_elem_info **id_elems;
|
||||
|
||||
/* the usb audio specification version this interface complies to */
|
||||
int protocol;
|
||||
|
||||
/* Sound Blaster remote control stuff */
|
||||
const struct rc_config *rc_cfg;
|
||||
u32 rc_code;
|
||||
|
|
|
|||
Loading…
Reference in a new issue