Update us144mkii.c
This commit is contained in:
serifpersia
parent
507fb082ef
commit
90c454ec4c
211
us144mkii.c
211
us144mkii.c
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@ -18,11 +18,6 @@ MODULE_LICENSE("GPL v2");
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#define DRIVER_NAME "us144mkii"
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#define DRIVER_VERSION "1.5"
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/*
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* TODO:
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* - Implement MIDI IN/OUT.
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*/
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/* --- Module Parameters --- */
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static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
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static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
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@ -95,11 +90,21 @@ struct tascam_card {
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struct snd_card *card;
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struct snd_pcm *pcm;
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/* Playback stream */
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struct snd_pcm_substream *playback_substream;
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struct urb *playback_urbs[NUM_PLAYBACK_URBS];
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size_t playback_urb_alloc_size;
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struct urb *feedback_urbs[NUM_FEEDBACK_URBS];
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size_t feedback_urb_alloc_size;
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atomic_t playback_active;
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u64 playback_frames_consumed;
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snd_pcm_uframes_t driver_playback_pos;
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u64 last_period_pos;
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/* Capture stream */
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struct snd_pcm_substream *capture_substream;
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struct urb *capture_urbs[NUM_CAPTURE_URBS];
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size_t capture_urb_alloc_size;
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atomic_t capture_active;
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snd_pcm_uframes_t driver_capture_pos;
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u64 capture_frames_processed;
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@ -109,11 +114,9 @@ struct tascam_card {
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volatile size_t capture_ring_buffer_write_ptr;
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u8 *capture_decode_raw_block;
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s32 *capture_decode_dst_block;
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struct work_struct capture_work;
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struct urb *feedback_urbs[NUM_FEEDBACK_URBS];
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size_t feedback_urb_alloc_size;
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struct work_struct capture_work; // For deferred processing
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/* Shared state & Routing Matrix */
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spinlock_t lock;
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atomic_t active_urbs;
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int current_rate;
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@ -130,13 +133,6 @@ struct tascam_card {
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unsigned int feedback_consecutive_errors;
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unsigned int feedback_urb_skip_count;
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u64 playback_frames_consumed;
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snd_pcm_uframes_t driver_playback_pos;
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u64 last_period_pos;
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u64 capture_frames_produced;
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u64 last_capture_period_pos;
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const unsigned int (*feedback_patterns)[8];
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unsigned int feedback_base_value;
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unsigned int feedback_max_value;
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@ -156,14 +152,6 @@ static int tascam_suspend(struct usb_interface *intf, pm_message_t message);
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static int tascam_resume(struct usb_interface *intf);
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/* --- Sysfs Attribute for Driver Version --- */
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/**
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* driver_version_show - Sysfs callback to show the driver version.
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* @dev: The device structure.
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* @attr: The device attribute structure.
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* @buf: The buffer to write the version string into.
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*
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* Returns: The number of bytes written.
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*/
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static ssize_t driver_version_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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@ -171,7 +159,6 @@ static ssize_t driver_version_show(struct device *dev,
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}
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static DEVICE_ATTR_RO(driver_version);
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/* --- ALSA Control Definitions --- */
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/* --- ALSA Control Definitions --- */
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static const char * const latency_profile_texts[] = {"Low", "Normal", "High"};
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static const char * const playback_source_texts[] = {"Playback 1-2", "Playback 3-4"};
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@ -179,13 +166,13 @@ static const char * const capture_source_texts[] = {"Analog In", "Digital In"};
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static int tascam_latency_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
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{
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uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
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uinfo->count = 1;
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uinfo->value.enumerated.items = 3;
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if (uinfo->value.enumerated.item >= 3)
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uinfo->value.enumerated.item = 2;
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strcpy(uinfo->value.enumerated.name, latency_profile_texts[uinfo->value.enumerated.item]);
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return 0;
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uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
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uinfo->count = 1;
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uinfo->value.enumerated.items = 3;
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if (uinfo->value.enumerated.item >= 3)
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uinfo->value.enumerated.item = 2;
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strcpy(uinfo->value.enumerated.name, latency_profile_texts[uinfo->value.enumerated.item]);
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return 0;
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}
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static int tascam_latency_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
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@ -211,19 +198,19 @@ static int tascam_latency_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem
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}
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static const struct snd_kcontrol_new tascam_latency_control = {
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "Latency Profile",
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.info = tascam_latency_info, .get = tascam_latency_get, .put = tascam_latency_put,
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "Latency Profile",
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.info = tascam_latency_info, .get = tascam_latency_get, .put = tascam_latency_put,
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};
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static int tascam_playback_source_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
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{
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uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
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uinfo->count = 1;
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uinfo->value.enumerated.items = 2;
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if (uinfo->value.enumerated.item >= 2)
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uinfo->value.enumerated.item = 1;
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strcpy(uinfo->value.enumerated.name, playback_source_texts[uinfo->value.enumerated.item]);
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return 0;
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uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
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uinfo->count = 1;
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uinfo->value.enumerated.items = 2;
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if (uinfo->value.enumerated.item >= 2)
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uinfo->value.enumerated.item = 1;
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strcpy(uinfo->value.enumerated.name, playback_source_texts[uinfo->value.enumerated.item]);
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return 0;
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}
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static int tascam_line_out_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
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@ -245,8 +232,8 @@ static int tascam_line_out_put(struct snd_kcontrol *kcontrol, struct snd_ctl_ele
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}
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static const struct snd_kcontrol_new tascam_line_out_control = {
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "Line Out Source",
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.info = tascam_playback_source_info, .get = tascam_line_out_get, .put = tascam_line_out_put,
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "Line Out Source",
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.info = tascam_playback_source_info, .get = tascam_line_out_get, .put = tascam_line_out_put,
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};
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static int tascam_digital_out_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
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@ -268,19 +255,19 @@ static int tascam_digital_out_put(struct snd_kcontrol *kcontrol, struct snd_ctl_
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}
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static const struct snd_kcontrol_new tascam_digital_out_control = {
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "Digital Out Source",
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.info = tascam_playback_source_info, .get = tascam_digital_out_get, .put = tascam_digital_out_put,
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "Digital Out Source",
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.info = tascam_playback_source_info, .get = tascam_digital_out_get, .put = tascam_digital_out_put,
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};
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static int tascam_capture_source_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
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{
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uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
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uinfo->count = 1;
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uinfo->value.enumerated.items = 2;
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if (uinfo->value.enumerated.item >= 2)
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uinfo->value.enumerated.item = 1;
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strcpy(uinfo->value.enumerated.name, capture_source_texts[uinfo->value.enumerated.item]);
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return 0;
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uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
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uinfo->count = 1;
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uinfo->value.enumerated.items = 2;
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if (uinfo->value.enumerated.item >= 2)
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uinfo->value.enumerated.item = 1;
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strcpy(uinfo->value.enumerated.name, capture_source_texts[uinfo->value.enumerated.item]);
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return 0;
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}
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static int tascam_capture_12_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
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@ -302,8 +289,8 @@ static int tascam_capture_12_put(struct snd_kcontrol *kcontrol, struct snd_ctl_e
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}
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static const struct snd_kcontrol_new tascam_capture_12_control = {
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "Capture 1-2 Source",
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.info = tascam_capture_source_info, .get = tascam_capture_12_get, .put = tascam_capture_12_put,
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "Capture 1-2 Source",
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.info = tascam_capture_source_info, .get = tascam_capture_12_get, .put = tascam_capture_12_put,
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};
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static int tascam_capture_34_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
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@ -325,19 +312,10 @@ static int tascam_capture_34_put(struct snd_kcontrol *kcontrol, struct snd_ctl_e
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}
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static const struct snd_kcontrol_new tascam_capture_34_control = {
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "Capture 3-4 Source",
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.info = tascam_capture_source_info, .get = tascam_capture_34_get, .put = tascam_capture_34_put,
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "Capture 3-4 Source",
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.info = tascam_capture_source_info, .get = tascam_capture_34_get, .put = tascam_capture_34_put,
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};
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/**
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* tascam_samplerate_info - ALSA control info callback for the sample rate.
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* @kcontrol: The kcontrol instance.
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* @uinfo: The user control element info structure to fill.
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*
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* Provides information about the read-only sample rate control.
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*
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* Returns: 0 on success.
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*/
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static int tascam_samplerate_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
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{
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uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
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@ -347,17 +325,6 @@ static int tascam_samplerate_info(struct snd_kcontrol *kcontrol, struct snd_ctl_
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return 0;
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}
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/**
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* tascam_samplerate_get - ALSA control get callback for the sample rate.
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* @kcontrol: The kcontrol instance.
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* @ucontrol: The user control element value structure to fill.
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*
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* Reports the current sample rate of the device. It first checks the driver's
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* internal state. If no stream is active, it queries the device directly via
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* a USB control message.
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*
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* Returns: 0 on success, or a negative error code on failure.
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*/
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static int tascam_samplerate_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
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{
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struct tascam_card *tascam = (struct tascam_card *)snd_kcontrol_chip(kcontrol);
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@ -583,26 +550,54 @@ error:
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return -ENOMEM;
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}
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static int tascam_pcm_open(struct snd_pcm_substream *substream)
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static int tascam_playback_open(struct snd_pcm_substream *substream)
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{
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struct tascam_card *tascam = snd_pcm_substream_chip(substream);
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struct snd_pcm_runtime *runtime = substream->runtime;
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int err;
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int err = 0;
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runtime->hw = tascam_pcm_hw;
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substream->runtime->hw = tascam_pcm_hw;
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tascam->playback_substream = substream;
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atomic_set(&tascam->playback_active, 0);
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if (!tascam->capture_substream) {
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err = tascam_alloc_urbs(tascam);
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if (err < 0)
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return err;
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}
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return 0;
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}
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static int tascam_pcm_close(struct snd_pcm_substream *substream)
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static int tascam_capture_open(struct snd_pcm_substream *substream)
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{
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struct tascam_card *tascam = snd_pcm_substream_chip(substream);
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int err = 0;
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substream->runtime->hw = tascam_pcm_hw;
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tascam->capture_substream = substream;
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atomic_set(&tascam->capture_active, 0);
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if (!tascam->playback_substream) {
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err = tascam_alloc_urbs(tascam);
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if (err < 0)
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return err;
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}
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return 0;
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}
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static int tascam_playback_close(struct snd_pcm_substream *substream)
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{
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struct tascam_card *tascam = snd_pcm_substream_chip(substream);
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tascam->playback_substream = NULL;
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if (!tascam->capture_substream)
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tascam_free_urbs(tascam);
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return 0;
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}
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static int tascam_capture_close(struct snd_pcm_substream *substream)
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{
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struct tascam_card *tascam = snd_pcm_substream_chip(substream);
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tascam->capture_substream = NULL;
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if (!tascam->playback_substream)
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tascam_free_urbs(tascam);
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return 0;
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}
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@ -685,7 +680,7 @@ static int tascam_pcm_hw_params(struct snd_pcm_substream *substream,
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if (err < 0)
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return err;
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/* Set rate-dependent feedback patterns and values */
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
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switch (rate) {
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case 44100:
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tascam->feedback_patterns = patterns_44khz;
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@ -706,14 +701,16 @@ static int tascam_pcm_hw_params(struct snd_pcm_substream *substream,
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default:
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return -EINVAL;
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}
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}
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/* Always re-configure hardware to ensure it's in a clean state */
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if (tascam->current_rate != rate) {
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err = us144mkii_configure_device_for_rate(tascam, rate);
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if (err < 0) {
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tascam->current_rate = 0;
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return err;
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}
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tascam->current_rate = rate;
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}
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return 0;
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}
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@ -723,7 +720,7 @@ static int tascam_pcm_hw_free(struct snd_pcm_substream *substream)
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return snd_pcm_lib_free_pages(substream);
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}
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static int tascam_pcm_prepare(struct snd_pcm_substream *substream)
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static int tascam_playback_prepare(struct snd_pcm_substream *substream)
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{
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struct tascam_card *tascam = snd_pcm_substream_chip(substream);
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struct snd_pcm_runtime *runtime = substream->runtime;
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@ -732,7 +729,6 @@ static int tascam_pcm_prepare(struct snd_pcm_substream *substream)
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size_t total_bytes_in_urb;
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unsigned int feedback_packets;
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/* Reset driver state for the new stream */
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tascam->driver_playback_pos = 0;
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tascam->playback_frames_consumed = 0;
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tascam->last_period_pos = 0;
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@ -742,12 +738,10 @@ static int tascam_pcm_prepare(struct snd_pcm_substream *substream)
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tascam->feedback_consecutive_errors = 0;
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tascam->feedback_urb_skip_count = NUM_FEEDBACK_URBS;
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/* Initialize feedback accumulator with nominal values */
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nominal_frames_per_packet = runtime->rate / 8000;
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for (i = 0; i < FEEDBACK_ACCUMULATOR_SIZE; i++)
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tascam->feedback_accumulator_pattern[i] = nominal_frames_per_packet;
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/* Validate and apply latency profile */
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switch (tascam->latency_profile) {
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case 0: feedback_packets = 1; break; /* Low */
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case 1: feedback_packets = 2; break; /* Normal */
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@ -755,11 +749,9 @@ static int tascam_pcm_prepare(struct snd_pcm_substream *substream)
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default: feedback_packets = 2;
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}
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/* Configure Feedback URBs */
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for (i = 0; i < NUM_FEEDBACK_URBS; i++) {
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struct urb *f_urb = tascam->feedback_urbs[i];
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int j;
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f_urb->number_of_packets = feedback_packets;
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f_urb->transfer_buffer_length = feedback_packets * FEEDBACK_PACKET_SIZE;
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for (j = 0; j < feedback_packets; j++) {
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@ -768,13 +760,11 @@ static int tascam_pcm_prepare(struct snd_pcm_substream *substream)
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}
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}
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/* Configure Playback URBs */
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nominal_bytes_per_packet = nominal_frames_per_packet * BYTES_PER_FRAME;
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total_bytes_in_urb = nominal_bytes_per_packet * PLAYBACK_URB_PACKETS;
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for (u = 0; u < NUM_PLAYBACK_URBS; u++) {
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struct urb *urb = tascam->playback_urbs[u];
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memset(urb->transfer_buffer, 0, tascam->playback_urb_alloc_size);
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urb->transfer_buffer_length = total_bytes_in_urb;
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urb->number_of_packets = PLAYBACK_URB_PACKETS;
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@ -883,7 +873,7 @@ start_rollback:
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return err;
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}
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static snd_pcm_uframes_t tascam_pcm_pointer(struct snd_pcm_substream *substream)
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static snd_pcm_uframes_t tascam_playback_pointer(struct snd_pcm_substream *substream)
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{
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struct tascam_card *tascam = snd_pcm_substream_chip(substream);
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struct snd_pcm_runtime *runtime = substream->runtime;
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@ -975,7 +965,6 @@ static void playback_urb_complete(struct urb *urb)
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spin_lock_irqsave(&tascam->lock, flags);
|
||||
|
||||
/* Phase 1: Populate the isochronous frame descriptors from the accumulator. */
|
||||
for (i = 0; i < urb->number_of_packets; i++) {
|
||||
unsigned int frames_for_packet;
|
||||
size_t bytes_for_packet;
|
||||
|
|
@ -994,15 +983,12 @@ static void playback_urb_complete(struct urb *urb)
|
|||
}
|
||||
urb->transfer_buffer_length = total_bytes_for_urb;
|
||||
|
||||
/* Phase 2: Atomically update the driver's position. */
|
||||
offset_frames = tascam->driver_playback_pos;
|
||||
frames_to_copy = bytes_to_frames(runtime, total_bytes_for_urb);
|
||||
tascam->driver_playback_pos = (offset_frames + frames_to_copy) % runtime->buffer_size;
|
||||
|
||||
/* --- End of Critical Section --- */
|
||||
spin_unlock_irqrestore(&tascam->lock, flags);
|
||||
|
||||
/* Phase 3: Perform the data copy OUTSIDE the lock. */
|
||||
if (total_bytes_for_urb > 0) {
|
||||
int f;
|
||||
src_buf = runtime->dma_area;
|
||||
|
|
@ -1077,7 +1063,6 @@ static void feedback_urb_complete(struct urb *urb)
|
|||
|
||||
spin_lock_irqsave(&tascam->lock, flags);
|
||||
|
||||
/* Hybrid Sync: Initial blind period for hardware to settle. */
|
||||
if (tascam->feedback_urb_skip_count > 0) {
|
||||
tascam->feedback_urb_skip_count--;
|
||||
goto unlock_and_continue;
|
||||
|
|
@ -1244,11 +1229,21 @@ static void tascam_capture_work_handler(struct work_struct *work)
|
|||
return;
|
||||
}
|
||||
|
||||
if (runtime->period_size > 0) {
|
||||
u64 current_period = div_u64(tascam->playback_frames_consumed, runtime->period_size);
|
||||
if (current_period > tascam->last_period_pos) {
|
||||
tascam->last_period_pos = current_period;
|
||||
playback_period_elapsed = true;
|
||||
while (atomic_read(&tascam->capture_active)) {
|
||||
size_t write_ptr, read_ptr, available_data;
|
||||
bool can_process;
|
||||
|
||||
spin_lock_irqsave(&tascam->lock, flags);
|
||||
write_ptr = tascam->capture_ring_buffer_write_ptr;
|
||||
read_ptr = tascam->capture_ring_buffer_read_ptr;
|
||||
available_data = (write_ptr >= read_ptr) ? (write_ptr - read_ptr) : (CAPTURE_RING_BUFFER_SIZE - read_ptr + write_ptr);
|
||||
can_process = (available_data >= RAW_BYTES_PER_DECODE_BLOCK);
|
||||
|
||||
if (can_process) {
|
||||
size_t i;
|
||||
for (i = 0; i < RAW_BYTES_PER_DECODE_BLOCK; i++)
|
||||
raw_block[i] = tascam->capture_ring_buffer[(read_ptr + i) % CAPTURE_RING_BUFFER_SIZE];
|
||||
tascam->capture_ring_buffer_read_ptr = (read_ptr + RAW_BYTES_PER_DECODE_BLOCK) % CAPTURE_RING_BUFFER_SIZE;
|
||||
}
|
||||
spin_unlock_irqrestore(&tascam->lock, flags);
|
||||
|
||||
|
|
@ -1337,14 +1332,11 @@ static void capture_urb_complete(struct urb *urb)
|
|||
schedule_work(&tascam->capture_work);
|
||||
}
|
||||
|
||||
urb->dev = tascam->dev;
|
||||
ret = usb_submit_urb(urb, GFP_ATOMIC);
|
||||
if (ret < 0)
|
||||
dev_err_ratelimited(tascam->card->dev, "Failed to resubmit feedback URB: %d\n", ret);
|
||||
dev_err_ratelimited(tascam->card->dev, "Failed to resubmit capture URB: %d\n", ret);
|
||||
}
|
||||
|
||||
|
||||
|
||||
static int tascam_create_pcm(struct tascam_card *tascam)
|
||||
{
|
||||
struct snd_pcm *pcm;
|
||||
|
|
@ -1414,7 +1406,6 @@ static int tascam_resume(struct usb_interface *intf)
|
|||
dev = tascam->dev;
|
||||
dev_info(&intf->dev, "Resuming and re-initializing device...\n");
|
||||
|
||||
/* Re-establish alternate settings for both interfaces */
|
||||
err = usb_set_interface(dev, 0, 1);
|
||||
if (err < 0) {
|
||||
dev_err(&intf->dev, "Resume: Set Alt Setting on Intf 0 failed: %d\n", err);
|
||||
|
|
@ -1426,7 +1417,6 @@ static int tascam_resume(struct usb_interface *intf)
|
|||
return err;
|
||||
}
|
||||
|
||||
/* Re-configure the device for the last used sample rate. */
|
||||
if (tascam->current_rate > 0) {
|
||||
dev_info(&intf->dev, "Restoring sample rate to %d Hz\n", tascam->current_rate);
|
||||
err = us144mkii_configure_device_for_rate(tascam, tascam->current_rate);
|
||||
|
|
@ -1489,7 +1479,7 @@ static int tascam_probe(struct usb_interface *intf, const struct usb_device_id *
|
|||
tascam->digital_out_source = 1;
|
||||
tascam->capture_12_source = 0;
|
||||
tascam->capture_34_source = 1;
|
||||
tascam->current_rate = 0; /* Not known until hw_params */
|
||||
tascam->current_rate = 0;
|
||||
|
||||
strscpy(card->driver, DRIVER_NAME, sizeof(card->driver));
|
||||
strscpy(card->shortname, "TASCAM US-144MKII", sizeof(card->shortname));
|
||||
|
|
@ -1593,7 +1583,6 @@ static void tascam_disconnect(struct usb_interface *intf)
|
|||
tascam->iface1 = NULL;
|
||||
}
|
||||
|
||||
/* Decrement the device index to allow the next probe to use this slot. */
|
||||
if (dev_idx > 0)
|
||||
dev_idx--;
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue