feat: working stable audio with feedback logic implementation
This commit is contained in:
serifpersia
GitHub
parent
ccc1f4da3d
commit
1658d10a96
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@ -15,11 +15,36 @@
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MODULE_AUTHOR("serifpersia");
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MODULE_DESCRIPTION("ALSA Driver for TASCAM US-144MKII");
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MODULE_LICENSE("GPL");
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MODULE_VERSION("1.0");
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MODULE_VERSION("1.4");
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#define DRIVER_NAME "us144mkii"
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// --- Device and Endpoint Configuration ---
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/* --- LATENCY CONTROL PANEL --- */
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/*
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* Set the desired latency profile by its index.
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* This setting is static and applies to all sample rates.
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*
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* Cheatsheet:
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* Index | Profile | Feedback Interval
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* ------|---------|--------------------
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* 0 | Lowest | ~5ms
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* 1 | Low | ~1ms
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* 2 | Normal | ~2ms
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* 3 | High | ~5ms
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* 4 | Highest | ~5ms
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*/
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#define LATENCY_PROFILE_INDEX 2 /* Default to Normal */
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/* --- Internal Latency Configuration - Do not edit --- */
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static const unsigned int latency_profile_packets[] = { 5, 1, 2, 5, 5 };
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#if LATENCY_PROFILE_INDEX < 0 || LATENCY_PROFILE_INDEX >= 5
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#error "Invalid LATENCY_PROFILE_INDEX. Please choose a value from 0 to 4."
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#endif
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#define CURRENT_LATENCY_PACKETS latency_profile_packets[LATENCY_PROFILE_INDEX]
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#define TASCAM_VID 0x0644
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#define TASCAM_PID 0x8020
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@ -27,30 +52,53 @@ MODULE_VERSION("1.0");
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#define EP_PLAYBACK_FEEDBACK 0x81
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#define EP_CAPTURE_DATA 0x86
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// --- USB Request Types ---
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#define RT_H2D_CLASS_EP 0x22
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#define RT_H2D_VENDOR_DEV 0x40
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#define RT_D2H_VENDOR_DEV 0xc0
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// --- UAC / Vendor Requests ---
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#define UAC_SET_CUR 0x01
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#define UAC_SAMPLING_FREQ_CONTROL 0x0100
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#define VENDOR_REQ_REGISTER_WRITE 65
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#define VENDOR_REQ_MODE_CONTROL 73
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// --- Streaming Configuration ---
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#define NUM_PLAYBACK_URBS 8
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#define NUM_FEEDBACK_URBS 4
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#define NUM_ISO_PACKETS 8
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#define BYTES_PER_SAMPLE 3
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#define DEVICE_CHANNELS 4
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#define PLAYBACK_BYTES_PER_FRAME (DEVICE_CHANNELS * BYTES_PER_SAMPLE)
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#define DEVICE_BYTES_PER_FRAME (DEVICE_CHANNELS * BYTES_PER_SAMPLE)
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#define FEEDBACK_BYTES_PER_PACKET 3
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#define MAX_SUPPORTED_RATE 96000
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#define USB_CTRL_TIMEOUT_MS 1000
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#define PLAYBACK_URB_ISO_PACKETS 40
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#define FEEDBACK_PACKET_SIZE 3
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#define FEEDBACK_ACCUMULATOR_SIZE 128
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static const unsigned int patterns_48khz[5][8] = {
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{5, 6, 6, 6, 5, 6, 6, 6}, {5, 6, 6, 6, 6, 6, 6, 6},
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{6, 6, 6, 6, 6, 6, 6, 6}, {7, 6, 6, 6, 6, 6, 6, 6},
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{7, 6, 6, 6, 7, 6, 6, 6}
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};
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static const unsigned int patterns_96khz[5][8] = {
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{11, 12, 12, 12, 11, 12, 12, 12}, {11, 12, 12, 12, 12, 12, 12, 12},
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{12, 12, 12, 12, 12, 12, 12, 12}, {13, 12, 12, 12, 12, 12, 12, 12},
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{13, 12, 12, 12, 13, 12, 12, 12}
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};
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static const unsigned int patterns_88khz[5][8] = {
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{10, 11, 11, 11, 10, 11, 11, 11}, {10, 11, 11, 11, 11, 11, 11, 11},
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{11, 11, 11, 11, 11, 11, 11, 11}, {12, 11, 11, 11, 11, 11, 11, 11},
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{12, 11, 11, 11, 12, 11, 11, 11}
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};
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static const unsigned int patterns_44khz[5][8] = {
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{5, 5, 5, 6, 5, 5, 5, 6}, {5, 5, 6, 5, 5, 6, 5, 6},
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{5, 6, 5, 6, 5, 6, 5, 6}, {6, 5, 6, 6, 5, 6, 5, 6},
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{6, 6, 6, 5, 6, 6, 6, 5}
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};
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static struct usb_driver tascam_alsa_driver;
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struct tascam_card {
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@ -63,19 +111,27 @@ struct tascam_card {
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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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int p_iso_packet_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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int f_iso_packet_size;
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spinlock_t playback_lock;
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spinlock_t lock;
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atomic_t playback_active;
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atomic_t feedback_active;
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snd_pcm_uframes_t playback_pos;
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unsigned int feedback_accumulator_pattern[FEEDBACK_ACCUMULATOR_SIZE];
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unsigned int feedback_pattern_out_idx;
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unsigned int feedback_pattern_in_idx;
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snd_pcm_uframes_t driver_playback_pos;
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snd_pcm_uframes_t playback_frames_consumed;
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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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unsigned int feedback_urb_skip_count;
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};
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// --- Forward Declarations ---
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static int tascam_pcm_open(struct snd_pcm_substream *substream);
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static int tascam_pcm_close(struct snd_pcm_substream *substream);
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static int tascam_pcm_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params);
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@ -89,6 +145,7 @@ static void feedback_urb_complete(struct urb *urb);
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static int us144mkii_configure_device_for_rate(struct tascam_card *tascam, int rate);
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// TODO: Fix DAW crashing when using this device
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static const struct snd_pcm_hardware tascam_pcm_hw = {
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.info = (SNDRV_PCM_INFO_MMAP |
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SNDRV_PCM_INFO_INTERLEAVED |
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@ -101,10 +158,10 @@ static const struct snd_pcm_hardware tascam_pcm_hw = {
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SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000),
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.rate_min = 44100,
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.rate_max = 96000,
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.channels_min = DEVICE_CHANNELS,
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.channels_max = DEVICE_CHANNELS,
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.buffer_bytes_max = 256 * 1024,
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.period_bytes_min = 256,
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.channels_min = 2,
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.channels_max = 2,
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.buffer_bytes_max = 1024 * 1024,
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.period_bytes_min = 64,
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.period_bytes_max = 64 * 1024,
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.periods_min = 2,
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.periods_max = 1024,
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@ -150,8 +207,6 @@ static int us144mkii_configure_device_for_rate(struct tascam_card *tascam, int r
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static const u8 payload_96000[] = {0x00, 0x77, 0x01};
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const u8 *current_payload_src;
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dev_info(&dev->dev, "Configuring device for rate %d Hz\n", rate);
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rate_payload_buf = kmalloc(3, GFP_KERNEL);
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if (!rate_payload_buf) return -ENOMEM;
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@ -169,37 +224,34 @@ static int us144mkii_configure_device_for_rate(struct tascam_card *tascam, int r
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memcpy(rate_payload_buf, current_payload_src, 3);
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err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), VENDOR_REQ_MODE_CONTROL, RT_H2D_VENDOR_DEV, 0x0010, 0x0000, NULL, 0, USB_CTRL_TIMEOUT_MS);
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if (err < 0) { dev_err(&dev->dev, "Set Initial Mode (0x0010) failed: %d\n", err); goto cleanup_buf; }
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if (err < 0) { goto cleanup_buf; }
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err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR, RT_H2D_CLASS_EP, UAC_SAMPLING_FREQ_CONTROL, EP_CAPTURE_DATA, rate_payload_buf, 3, USB_CTRL_TIMEOUT_MS);
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if (err < 0) { dev_err(&dev->dev, "Set Rate on Capture EP (0x%02x) failed: %d\n", EP_CAPTURE_DATA, err); goto cleanup_buf; }
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if (err < 0) { goto cleanup_buf; }
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err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR, RT_H2D_CLASS_EP, UAC_SAMPLING_FREQ_CONTROL, EP_AUDIO_OUT, rate_payload_buf, 3, USB_CTRL_TIMEOUT_MS);
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if (err < 0) { dev_err(&dev->dev, "Set Rate on Playback EP (0x%02x) failed: %d\n", EP_AUDIO_OUT, err); goto cleanup_buf; }
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if (err < 0) { goto cleanup_buf; }
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err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), VENDOR_REQ_REGISTER_WRITE, RT_H2D_VENDOR_DEV, 0x0d04, 0x0101, NULL, 0, USB_CTRL_TIMEOUT_MS);
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if (err < 0) { dev_err(&dev->dev, "Reg Write 0x0d04 failed: %d\n", err); goto cleanup_buf; }
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if (err < 0) { goto cleanup_buf; }
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err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), VENDOR_REQ_REGISTER_WRITE, RT_H2D_VENDOR_DEV, 0x0e00, 0x0101, NULL, 0, USB_CTRL_TIMEOUT_MS);
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if (err < 0) { dev_err(&dev->dev, "Reg Write 0x0e00 failed: %d\n", err); goto cleanup_buf; }
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if (err < 0) { goto cleanup_buf; }
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err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), VENDOR_REQ_REGISTER_WRITE, RT_H2D_VENDOR_DEV, 0x0f00, 0x0101, NULL, 0, USB_CTRL_TIMEOUT_MS);
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if (err < 0) { dev_err(&dev->dev, "Reg Write 0x0f00 failed: %d\n", err); goto cleanup_buf; }
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if (err < 0) { goto cleanup_buf; }
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err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), VENDOR_REQ_REGISTER_WRITE, RT_H2D_VENDOR_DEV, rate_vendor_wValue, 0x0101, NULL, 0, USB_CTRL_TIMEOUT_MS);
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if (err < 0) { dev_err(&dev->dev, "Rate-Dep Reg Write (0x%04x) failed: %d\n", rate_vendor_wValue, err); goto cleanup_buf; }
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if (err < 0) { goto cleanup_buf; }
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err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), VENDOR_REQ_REGISTER_WRITE, RT_H2D_VENDOR_DEV, 0x110b, 0x0101, NULL, 0, USB_CTRL_TIMEOUT_MS);
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if (err < 0) { dev_err(&dev->dev, "Reg Write 0x110b failed: %d\n", err); goto cleanup_buf; }
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if (err < 0) { goto cleanup_buf; }
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err = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), VENDOR_REQ_MODE_CONTROL, RT_H2D_VENDOR_DEV, 0x0030, 0x0000, NULL, 0, USB_CTRL_TIMEOUT_MS);
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if (err < 0) { dev_err(&dev->dev, "Enable Streaming (0x0030) failed: %d\n", err); goto cleanup_buf; }
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dev_info(&dev->dev, "Device configuration for rate %d Hz completed.\n", rate);
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if (err < 0) { goto cleanup_buf; }
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cleanup_buf:
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kfree(rate_payload_buf);
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return err;
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}
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static int tascam_probe(struct usb_interface *intf, const struct usb_device_id *id)
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{
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struct usb_device *dev = interface_to_usbdev(intf);
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@ -225,7 +277,7 @@ static int tascam_probe(struct usb_interface *intf, const struct usb_device_id *
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tascam->iface0 = intf;
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card->private_free = tascam_card_private_free;
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usb_set_intfdata(intf, tascam);
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spin_lock_init(&tascam->playback_lock);
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spin_lock_init(&tascam->lock);
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atomic_set(&tascam->playback_active, 0);
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atomic_set(&tascam->feedback_active, 0);
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@ -255,7 +307,6 @@ static int tascam_probe(struct usb_interface *intf, const struct usb_device_id *
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if (err < 0) { dev_err(&intf->dev, "Set Alt Setting on Intf 0 failed: %d\n", err); goto release_iface1_and_free_card; }
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err = usb_set_interface(dev, 1, 1);
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if (err < 0) { dev_err(&intf->dev, "Set Alt Setting on Intf 1 failed: %d\n", err); goto release_iface1_and_free_card; }
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dev_info(&intf->dev, "Interfaces 0 and 1 set to altsetting 1.\n");
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handshake_buf = kmalloc(1, GFP_KERNEL);
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if (!handshake_buf) { err = -ENOMEM; goto release_iface1_and_free_card; }
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@ -317,116 +368,167 @@ static void tascam_disconnect(struct usb_interface *intf)
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{
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struct tascam_card *tascam = usb_get_intfdata(intf);
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if (!tascam) {
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dev_warn(&intf->dev, "Disconnect called on interface with no private data.\n");
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if (!tascam)
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return;
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}
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if (intf == tascam->iface0) {
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dev_info(&intf->dev, "Disconnecting TASCAM US-144MKII (iface0)...\n");
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atomic_set(&tascam->playback_active, 0);
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atomic_set(&tascam->feedback_active, 0);
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snd_card_disconnect(tascam->card);
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if (tascam->iface1) {
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dev_info(&intf->dev, "Releasing claimed interface 1.\n");
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usb_driver_release_interface(&tascam_alsa_driver, tascam->iface1);
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tascam->iface1 = NULL;
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}
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snd_card_free_when_closed(tascam->card);
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dev_info(&intf->dev, "TASCAM US-144MKII (iface0) disconnected and scheduled for freeing.\n");
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} else if (intf == tascam->iface1) {
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dev_info(&intf->dev, "Disconnecting TASCAM US-144MKII (iface1). Data already cleared by iface0 disconnect.\n");
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}
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}
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static void playback_urb_complete(struct urb *urb)
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{
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struct tascam_card *tascam = urb->context;
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struct snd_pcm_substream *substream;
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struct snd_pcm_runtime *runtime;
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unsigned long flags;
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int ret;
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int ret, i, f;
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char *urb_buf_ptr = urb->transfer_buffer;
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size_t alsa_frame_bytes;
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if (urb->status == -ENOENT || urb->status == -ECONNRESET || urb->status == -ESHUTDOWN) {
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if (urb->status == -ENOENT || urb->status == -ECONNRESET || urb->status == -ESHUTDOWN)
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return;
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}
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if (!tascam || !atomic_read(&tascam->playback_active)) {
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if (!tascam || !atomic_read(&tascam->playback_active))
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return;
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}
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substream = tascam->playback_substream;
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if (!substream) return;
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if (!substream)
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return;
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runtime = substream->runtime;
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if (!runtime) return;
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if (!runtime)
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return;
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if (urb->status != 0) {
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dev_warn_ratelimited(tascam->card->dev, "Playback URB completed with status %d\n", urb->status);
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alsa_frame_bytes = runtime->frame_bits / 8;
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spin_lock_irqsave(&tascam->lock, flags);
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for (i = 0; i < PLAYBACK_URB_ISO_PACKETS; i++) {
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unsigned int frames_for_packet;
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size_t bytes_for_packet;
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frames_for_packet = tascam->feedback_accumulator_pattern[tascam->feedback_pattern_out_idx];
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tascam->feedback_pattern_out_idx = (tascam->feedback_pattern_out_idx + 1) % FEEDBACK_ACCUMULATOR_SIZE;
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for (f = 0; f < frames_for_packet; f++) {
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size_t alsa_pos_bytes = frames_to_bytes(runtime, tascam->driver_playback_pos);
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char *alsa_frame_ptr = runtime->dma_area + alsa_pos_bytes;
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memcpy(urb_buf_ptr, alsa_frame_ptr, alsa_frame_bytes);
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memset(urb_buf_ptr + alsa_frame_bytes, 0, alsa_frame_bytes);
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urb_buf_ptr += DEVICE_BYTES_PER_FRAME;
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tascam->driver_playback_pos++;
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if (tascam->driver_playback_pos >= runtime->buffer_size)
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tascam->driver_playback_pos = 0;
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}
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spin_lock_irqsave(&tascam->playback_lock, flags);
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for (int i = 0; i < NUM_ISO_PACKETS; ++i) {
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size_t dma_pos_bytes;
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size_t current_iso_packet_len = tascam->p_iso_packet_size;
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u8 *urb_packet_buffer = urb->transfer_buffer + (i * current_iso_packet_len);
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dma_pos_bytes = frames_to_bytes(runtime, tascam->playback_pos);
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if (dma_pos_bytes + current_iso_packet_len > runtime->dma_bytes) {
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size_t len1 = runtime->dma_bytes - dma_pos_bytes;
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memcpy(urb_packet_buffer, runtime->dma_area + dma_pos_bytes, len1);
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memcpy(urb_packet_buffer + len1, runtime->dma_area, current_iso_packet_len - len1);
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} else {
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memcpy(urb_packet_buffer, runtime->dma_area + dma_pos_bytes, current_iso_packet_len);
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bytes_for_packet = frames_for_packet * DEVICE_BYTES_PER_FRAME;
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urb->iso_frame_desc[i].offset = (urb_buf_ptr - (char *)urb->transfer_buffer) - bytes_for_packet;
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urb->iso_frame_desc[i].length = bytes_for_packet;
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}
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tascam->playback_pos += bytes_to_frames(runtime, current_iso_packet_len);
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if (tascam->playback_pos >= runtime->buffer_size) {
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tascam->playback_pos -= runtime->buffer_size;
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}
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}
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spin_unlock_irqrestore(&tascam->playback_lock, flags);
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spin_unlock_irqrestore(&tascam->lock, flags);
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urb->transfer_buffer_length = urb_buf_ptr - (char *)urb->transfer_buffer;
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if (atomic_read(&tascam->playback_active)) {
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urb->dev = tascam->dev;
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ret = usb_submit_urb(urb, GFP_ATOMIC);
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if (ret < 0) {
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if (ret < 0)
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dev_err_ratelimited(tascam->card->dev, "Failed to resubmit playback URB: %d\n", ret);
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}
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}
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snd_pcm_period_elapsed(substream);
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}
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static void feedback_urb_complete(struct urb *urb)
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{
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struct tascam_card *tascam = urb->context;
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int ret;
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struct snd_pcm_substream *substream;
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struct snd_pcm_runtime *runtime;
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unsigned long flags;
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int ret, i, p;
|
||||
unsigned int frames_consumed_in_urb = 0;
|
||||
|
||||
if (urb->status == -ENOENT || urb->status == -ECONNRESET || urb->status == -ESHUTDOWN) {
|
||||
if (urb->status == -ENOENT || urb->status == -ECONNRESET || urb->status == -ESHUTDOWN)
|
||||
return;
|
||||
}
|
||||
|
||||
if (!tascam || !atomic_read(&tascam->feedback_active)) {
|
||||
if (!tascam || !atomic_read(&tascam->feedback_active))
|
||||
return;
|
||||
|
||||
substream = tascam->playback_substream;
|
||||
if (!substream)
|
||||
return;
|
||||
runtime = substream->runtime;
|
||||
if (!runtime)
|
||||
return;
|
||||
|
||||
spin_lock_irqsave(&tascam->lock, flags);
|
||||
if (tascam->feedback_urb_skip_count > 0) {
|
||||
tascam->feedback_urb_skip_count--;
|
||||
spin_unlock_irqrestore(&tascam->lock, flags);
|
||||
goto resubmit;
|
||||
}
|
||||
spin_unlock_irqrestore(&tascam->lock, flags);
|
||||
|
||||
if (urb->status != 0)
|
||||
goto resubmit;
|
||||
|
||||
spin_lock_irqsave(&tascam->lock, flags);
|
||||
for (p = 0; p < urb->number_of_packets; p++) {
|
||||
u8 feedback_value;
|
||||
const unsigned int *pattern;
|
||||
int pattern_index;
|
||||
unsigned int frames_this_ms = 0;
|
||||
|
||||
if (urb->iso_frame_desc[p].actual_length < 1)
|
||||
continue;
|
||||
|
||||
feedback_value = *((u8 *)urb->transfer_buffer + urb->iso_frame_desc[p].offset);
|
||||
|
||||
if (feedback_value >= tascam->feedback_base_value &&
|
||||
feedback_value <= tascam->feedback_max_value) {
|
||||
pattern_index = feedback_value - tascam->feedback_base_value;
|
||||
pattern = tascam->feedback_patterns[pattern_index];
|
||||
} else {
|
||||
pattern_index = 2;
|
||||
pattern = tascam->feedback_patterns[pattern_index];
|
||||
}
|
||||
|
||||
if (urb->status != 0) {
|
||||
dev_warn_ratelimited(tascam->card->dev, "Feedback URB completed with status %d\n", urb->status);
|
||||
for (i = 0; i < 8; i++) {
|
||||
unsigned int in_idx = (tascam->feedback_pattern_in_idx + i) % FEEDBACK_ACCUMULATOR_SIZE;
|
||||
tascam->feedback_accumulator_pattern[in_idx] = pattern[i];
|
||||
frames_this_ms += pattern[i];
|
||||
}
|
||||
tascam->feedback_pattern_in_idx = (tascam->feedback_pattern_in_idx + 8) % FEEDBACK_ACCUMULATOR_SIZE;
|
||||
frames_consumed_in_urb += frames_this_ms;
|
||||
}
|
||||
|
||||
tascam->playback_frames_consumed += frames_consumed_in_urb;
|
||||
if (tascam->playback_frames_consumed >= runtime->buffer_size)
|
||||
tascam->playback_frames_consumed %= runtime->buffer_size;
|
||||
|
||||
spin_unlock_irqrestore(&tascam->lock, flags);
|
||||
|
||||
snd_pcm_period_elapsed(substream);
|
||||
|
||||
resubmit:
|
||||
if (atomic_read(&tascam->feedback_active)) {
|
||||
urb->dev = tascam->dev;
|
||||
ret = usb_submit_urb(urb, GFP_ATOMIC);
|
||||
if (ret < 0) {
|
||||
if (ret < 0)
|
||||
dev_err_ratelimited(tascam->card->dev, "Failed to resubmit feedback URB: %d\n", ret);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int tascam_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
|
||||
{
|
||||
|
|
@ -434,134 +536,110 @@ static int tascam_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
|
|||
unsigned long flags;
|
||||
int err = 0;
|
||||
int i;
|
||||
bool start_streaming = false;
|
||||
|
||||
spin_lock_irqsave(&tascam->playback_lock, flags);
|
||||
spin_lock_irqsave(&tascam->lock, flags);
|
||||
switch (cmd) {
|
||||
case SNDRV_PCM_TRIGGER_START:
|
||||
case SNDRV_PCM_TRIGGER_RESUME:
|
||||
if (atomic_read(&tascam->playback_active)) {
|
||||
err = -EBUSY;
|
||||
break;
|
||||
}
|
||||
tascam->playback_pos = 0;
|
||||
if (!atomic_read(&tascam->playback_active)) {
|
||||
atomic_set(&tascam->playback_active, 1);
|
||||
atomic_set(&tascam->feedback_active, 1);
|
||||
dev_info(tascam->card->dev, "PCM TRIGGER START/RESUME\n");
|
||||
start_streaming = true;
|
||||
}
|
||||
break;
|
||||
case SNDRV_PCM_TRIGGER_STOP:
|
||||
case SNDRV_PCM_TRIGGER_SUSPEND:
|
||||
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
|
||||
if (!atomic_read(&tascam->playback_active)) {
|
||||
err = 0;
|
||||
break;
|
||||
}
|
||||
atomic_set(&tascam->playback_active, 0);
|
||||
atomic_set(&tascam->feedback_active, 0);
|
||||
dev_info(tascam->card->dev, "PCM TRIGGER STOP/SUSPEND/PAUSE\n");
|
||||
break;
|
||||
default:
|
||||
err = -EINVAL;
|
||||
break;
|
||||
}
|
||||
spin_unlock_irqrestore(&tascam->playback_lock, flags);
|
||||
spin_unlock_irqrestore(&tascam->lock, flags);
|
||||
|
||||
if (err < 0) return err;
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
if (cmd == SNDRV_PCM_TRIGGER_START || cmd == SNDRV_PCM_TRIGGER_RESUME) {
|
||||
if (start_streaming) {
|
||||
for (i = 0; i < NUM_PLAYBACK_URBS; i++) {
|
||||
err = usb_submit_urb(tascam->playback_urbs[i], GFP_ATOMIC);
|
||||
if (err < 0) {
|
||||
dev_err(tascam->card->dev, "Failed to submit playback URB %d: %d\n", i, err);
|
||||
atomic_set(&tascam->playback_active, 0);
|
||||
atomic_set(&tascam->feedback_active, 0);
|
||||
for (int j = 0; j < i; j++) usb_kill_urb(tascam->playback_urbs[j]);
|
||||
return err;
|
||||
}
|
||||
if (err < 0)
|
||||
goto stop_and_kill;
|
||||
}
|
||||
for (i = 0; i < NUM_FEEDBACK_URBS; i++) {
|
||||
err = usb_submit_urb(tascam->feedback_urbs[i], GFP_ATOMIC);
|
||||
if (err < 0) {
|
||||
dev_err(tascam->card->dev, "Failed to submit feedback URB %d: %d\n", i, err);
|
||||
if (err < 0)
|
||||
goto stop_and_kill;
|
||||
}
|
||||
} else {
|
||||
stop_and_kill:
|
||||
if (start_streaming) {
|
||||
atomic_set(&tascam->playback_active, 0);
|
||||
atomic_set(&tascam->feedback_active, 0);
|
||||
for (int j = 0; j < NUM_PLAYBACK_URBS; j++) usb_kill_urb(tascam->playback_urbs[j]);
|
||||
for (int j = 0; j < i; j++) usb_kill_urb(tascam->feedback_urbs[j]);
|
||||
return err;
|
||||
}
|
||||
}
|
||||
} else if (cmd == SNDRV_PCM_TRIGGER_STOP || cmd == SNDRV_PCM_TRIGGER_SUSPEND || cmd == SNDRV_PCM_TRIGGER_PAUSE_PUSH) {
|
||||
for (i = 0; i < NUM_PLAYBACK_URBS; i++)
|
||||
if (tascam->playback_urbs[i]) usb_kill_urb(tascam->playback_urbs[i]);
|
||||
usb_kill_urb(tascam->playback_urbs[i]);
|
||||
for (i = 0; i < NUM_FEEDBACK_URBS; i++)
|
||||
if (tascam->feedback_urbs[i]) usb_kill_urb(tascam->feedback_urbs[i]);
|
||||
usb_kill_urb(tascam->feedback_urbs[i]);
|
||||
}
|
||||
return 0;
|
||||
return err;
|
||||
}
|
||||
|
||||
static snd_pcm_uframes_t tascam_pcm_pointer(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct tascam_card *tascam = snd_pcm_substream_chip(substream);
|
||||
return tascam->playback_pos;
|
||||
return tascam->playback_frames_consumed;
|
||||
}
|
||||
|
||||
static int tascam_pcm_prepare(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct tascam_card *tascam = snd_pcm_substream_chip(substream);
|
||||
struct snd_pcm_runtime *runtime = substream->runtime;
|
||||
size_t total_urb_transfer_bytes;
|
||||
size_t individual_iso_packet_size;
|
||||
int i, j;
|
||||
unsigned long flags;
|
||||
int i, u;
|
||||
size_t nominal_frames_per_packet;
|
||||
size_t nominal_bytes_per_packet;
|
||||
size_t total_bytes_in_urb;
|
||||
|
||||
dev_info(tascam->card->dev, "PCM PREPARE: rate=%d, channels=%d, format=%d, period_size=%ld, periods=%d\n",
|
||||
runtime->rate, runtime->channels, runtime->format, runtime->period_size, runtime->periods);
|
||||
spin_lock_irqsave(&tascam->lock, flags);
|
||||
|
||||
total_urb_transfer_bytes = (runtime->rate / 1000) * PLAYBACK_BYTES_PER_FRAME;
|
||||
tascam->driver_playback_pos = 0;
|
||||
tascam->playback_frames_consumed = 0;
|
||||
tascam->feedback_pattern_in_idx = 0;
|
||||
tascam->feedback_pattern_out_idx = 0;
|
||||
tascam->feedback_urb_skip_count = NUM_FEEDBACK_URBS * 2;
|
||||
|
||||
if (NUM_ISO_PACKETS == 0) {
|
||||
dev_err(tascam->card->dev, "NUM_ISO_PACKETS is zero, invalid configuration.\n");
|
||||
nominal_frames_per_packet = runtime->rate / 8000;
|
||||
for (i = 0; i < FEEDBACK_ACCUMULATOR_SIZE; i++)
|
||||
tascam->feedback_accumulator_pattern[i] = nominal_frames_per_packet;
|
||||
|
||||
nominal_bytes_per_packet = nominal_frames_per_packet * DEVICE_BYTES_PER_FRAME;
|
||||
total_bytes_in_urb = nominal_bytes_per_packet * PLAYBACK_URB_ISO_PACKETS;
|
||||
|
||||
if (total_bytes_in_urb > tascam->playback_urb_alloc_size) {
|
||||
dev_err(tascam->card->dev, "Prepare: Nominal URB size %zu > allocated %zu\n",
|
||||
total_bytes_in_urb, tascam->playback_urb_alloc_size);
|
||||
spin_unlock_irqrestore(&tascam->lock, flags);
|
||||
return -EINVAL;
|
||||
}
|
||||
individual_iso_packet_size = total_urb_transfer_bytes / NUM_ISO_PACKETS;
|
||||
|
||||
if (individual_iso_packet_size == 0 && total_urb_transfer_bytes > 0) {
|
||||
dev_err(tascam->card->dev, "Zero individual ISO packet size. Rate %d, BPF %d, N_ISO %d\n",
|
||||
runtime->rate, PLAYBACK_BYTES_PER_FRAME, NUM_ISO_PACKETS);
|
||||
return -EINVAL;
|
||||
}
|
||||
tascam->p_iso_packet_size = individual_iso_packet_size;
|
||||
for (u = 0; u < NUM_PLAYBACK_URBS; u++) {
|
||||
struct urb *urb = tascam->playback_urbs[u];
|
||||
|
||||
for (i = 0; i < NUM_PLAYBACK_URBS; i++) {
|
||||
struct urb *urb = tascam->playback_urbs[i];
|
||||
if (!urb) continue;
|
||||
memset(urb->transfer_buffer, 0, total_bytes_in_urb);
|
||||
urb->transfer_buffer_length = total_bytes_in_urb;
|
||||
|
||||
if (total_urb_transfer_bytes > tascam->playback_urb_alloc_size) {
|
||||
dev_err(tascam->card->dev, "Playback URB transfer size %zu > allocated %zu\n",
|
||||
total_urb_transfer_bytes, tascam->playback_urb_alloc_size);
|
||||
return -EINVAL;
|
||||
}
|
||||
memset(urb->transfer_buffer, 0, total_urb_transfer_bytes);
|
||||
urb->transfer_buffer_length = total_urb_transfer_bytes;
|
||||
urb->number_of_packets = NUM_ISO_PACKETS;
|
||||
|
||||
for (j = 0; j < NUM_ISO_PACKETS; j++) {
|
||||
urb->iso_frame_desc[j].offset = j * tascam->p_iso_packet_size;
|
||||
urb->iso_frame_desc[j].length = tascam->p_iso_packet_size;
|
||||
for (i = 0; i < PLAYBACK_URB_ISO_PACKETS; i++) {
|
||||
urb->iso_frame_desc[i].offset = i * nominal_bytes_per_packet;
|
||||
urb->iso_frame_desc[i].length = nominal_bytes_per_packet;
|
||||
}
|
||||
}
|
||||
|
||||
tascam->f_iso_packet_size = FEEDBACK_BYTES_PER_PACKET;
|
||||
for (i = 0; i < NUM_FEEDBACK_URBS; i++) {
|
||||
struct urb *f_urb = tascam->feedback_urbs[i];
|
||||
if (!f_urb) continue;
|
||||
f_urb->transfer_buffer_length = tascam->f_iso_packet_size * NUM_ISO_PACKETS;
|
||||
f_urb->number_of_packets = NUM_ISO_PACKETS;
|
||||
for (j = 0; j < NUM_ISO_PACKETS; j++) {
|
||||
f_urb->iso_frame_desc[j].offset = j * tascam->f_iso_packet_size;
|
||||
f_urb->iso_frame_desc[j].length = tascam->f_iso_packet_size;
|
||||
}
|
||||
}
|
||||
spin_unlock_irqrestore(&tascam->lock, flags);
|
||||
|
||||
tascam->playback_pos = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -569,19 +647,37 @@ static int tascam_pcm_hw_params(struct snd_pcm_substream *substream, struct snd_
|
|||
{
|
||||
struct tascam_card *tascam = snd_pcm_substream_chip(substream);
|
||||
int err;
|
||||
unsigned int rate = params_rate(params);
|
||||
|
||||
dev_info(tascam->card->dev, "PCM HW_PARAMS: rate=%u, channels=%u, format=%d, period_bytes=%u, periods=%u\n",
|
||||
params_rate(params), params_channels(params), params_format(params),
|
||||
params_period_bytes(params), params_periods(params));
|
||||
|
||||
if (params_channels(params) != DEVICE_CHANNELS) {
|
||||
dev_warn(tascam->card->dev, "Requested %d channels, but device is fixed at %d. This may cause issues.\n",
|
||||
params_channels(params), DEVICE_CHANNELS);
|
||||
switch (rate) {
|
||||
case 44100:
|
||||
tascam->feedback_patterns = patterns_44khz;
|
||||
tascam->feedback_base_value = 42;
|
||||
tascam->feedback_max_value = 46;
|
||||
break;
|
||||
case 48000:
|
||||
tascam->feedback_patterns = patterns_48khz;
|
||||
tascam->feedback_base_value = 46;
|
||||
tascam->feedback_max_value = 50;
|
||||
break;
|
||||
case 88200:
|
||||
tascam->feedback_patterns = patterns_88khz;
|
||||
tascam->feedback_base_value = 86;
|
||||
tascam->feedback_max_value = 90;
|
||||
break;
|
||||
case 96000:
|
||||
tascam->feedback_patterns = patterns_96khz;
|
||||
tascam->feedback_base_value = 94;
|
||||
tascam->feedback_max_value = 98;
|
||||
break;
|
||||
default:
|
||||
dev_err(tascam->card->dev, "Unsupported sample rate for feedback: %u\n", rate);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
err = us144mkii_configure_device_for_rate(tascam, params_rate(params));
|
||||
err = us144mkii_configure_device_for_rate(tascam, rate);
|
||||
if (err < 0) {
|
||||
dev_err(tascam->card->dev, "Failed to set hardware rate to %u: %d\n", params_rate(params), err);
|
||||
dev_err(tascam->card->dev, "Failed to set hardware rate to %u: %d\n", rate, err);
|
||||
return err;
|
||||
}
|
||||
|
||||
|
|
@ -597,9 +693,8 @@ static int tascam_pcm_open(struct snd_pcm_substream *substream)
|
|||
{
|
||||
struct tascam_card *tascam = snd_pcm_substream_chip(substream);
|
||||
struct snd_pcm_runtime *runtime = substream->runtime;
|
||||
int i;
|
||||
|
||||
dev_info(tascam->card->dev, "PCM OPEN\n");
|
||||
int i, j;
|
||||
size_t max_frames_per_packet, max_packet_size;
|
||||
|
||||
runtime->hw = tascam_pcm_hw;
|
||||
|
||||
|
|
@ -607,21 +702,25 @@ static int tascam_pcm_open(struct snd_pcm_substream *substream)
|
|||
atomic_set(&tascam->playback_active, 0);
|
||||
atomic_set(&tascam->feedback_active, 0);
|
||||
|
||||
tascam->playback_urb_alloc_size = (MAX_SUPPORTED_RATE / 1000) * PLAYBACK_BYTES_PER_FRAME;
|
||||
max_frames_per_packet = (MAX_SUPPORTED_RATE / 8000) + 2;
|
||||
max_packet_size = max_frames_per_packet * DEVICE_BYTES_PER_FRAME;
|
||||
tascam->playback_urb_alloc_size = max_packet_size * PLAYBACK_URB_ISO_PACKETS;
|
||||
|
||||
if (tascam->playback_urb_alloc_size == 0) {
|
||||
dev_err(tascam->card->dev, "Calculated playback_urb_alloc_size is zero.\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
for (i = 0; i < NUM_PLAYBACK_URBS; i++) {
|
||||
struct urb *urb = usb_alloc_urb(NUM_ISO_PACKETS, GFP_KERNEL);
|
||||
if (!urb) goto error_free_playback_urbs;
|
||||
struct urb *urb = usb_alloc_urb(PLAYBACK_URB_ISO_PACKETS, GFP_KERNEL);
|
||||
if (!urb)
|
||||
goto error_free_urbs;
|
||||
tascam->playback_urbs[i] = urb;
|
||||
|
||||
urb->transfer_buffer = usb_alloc_coherent(tascam->dev, tascam->playback_urb_alloc_size,
|
||||
GFP_KERNEL, &urb->transfer_dma);
|
||||
if (!urb->transfer_buffer) {
|
||||
goto error_free_playback_urbs;
|
||||
goto error_free_urbs;
|
||||
}
|
||||
urb->dev = tascam->dev;
|
||||
urb->pipe = usb_sndisocpipe(tascam->dev, EP_AUDIO_OUT);
|
||||
|
|
@ -629,55 +728,53 @@ static int tascam_pcm_open(struct snd_pcm_substream *substream)
|
|||
urb->interval = 1;
|
||||
urb->context = tascam;
|
||||
urb->complete = playback_urb_complete;
|
||||
urb->number_of_packets = PLAYBACK_URB_ISO_PACKETS;
|
||||
}
|
||||
|
||||
tascam->f_iso_packet_size = FEEDBACK_BYTES_PER_PACKET;
|
||||
tascam->feedback_urb_alloc_size = tascam->f_iso_packet_size * NUM_ISO_PACKETS;
|
||||
if (tascam->feedback_urb_alloc_size == 0) {
|
||||
dev_err(tascam->card->dev, "Calculated feedback_urb_alloc_size is zero.\n");
|
||||
goto error_free_playback_urbs;
|
||||
}
|
||||
tascam->feedback_urb_alloc_size = FEEDBACK_PACKET_SIZE * CURRENT_LATENCY_PACKETS;
|
||||
|
||||
for (i = 0; i < NUM_FEEDBACK_URBS; i++) {
|
||||
struct urb *f_urb = usb_alloc_urb(NUM_ISO_PACKETS, GFP_KERNEL);
|
||||
if (!f_urb) goto error_free_feedback_urbs;
|
||||
struct urb *f_urb = usb_alloc_urb(CURRENT_LATENCY_PACKETS, GFP_KERNEL);
|
||||
if (!f_urb)
|
||||
goto error_free_urbs;
|
||||
tascam->feedback_urbs[i] = f_urb;
|
||||
|
||||
f_urb->transfer_buffer = usb_alloc_coherent(tascam->dev, tascam->feedback_urb_alloc_size,
|
||||
GFP_KERNEL, &f_urb->transfer_dma);
|
||||
if (!f_urb->transfer_buffer) {
|
||||
goto error_free_feedback_urbs;
|
||||
}
|
||||
if (!f_urb->transfer_buffer)
|
||||
goto error_free_urbs;
|
||||
|
||||
f_urb->dev = tascam->dev;
|
||||
f_urb->pipe = usb_rcvisocpipe(tascam->dev, EP_PLAYBACK_FEEDBACK);
|
||||
f_urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
|
||||
f_urb->interval = 1;
|
||||
f_urb->interval = 4;
|
||||
f_urb->context = tascam;
|
||||
f_urb->complete = feedback_urb_complete;
|
||||
f_urb->number_of_packets = CURRENT_LATENCY_PACKETS;
|
||||
f_urb->transfer_buffer_length = tascam->feedback_urb_alloc_size;
|
||||
for (j = 0; j < CURRENT_LATENCY_PACKETS; j++) {
|
||||
f_urb->iso_frame_desc[j].offset = j * FEEDBACK_PACKET_SIZE;
|
||||
f_urb->iso_frame_desc[j].length = FEEDBACK_PACKET_SIZE;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
error_free_feedback_urbs:
|
||||
error_free_urbs:
|
||||
for (i = 0; i < NUM_FEEDBACK_URBS; i++) {
|
||||
if (tascam->feedback_urbs[i]) {
|
||||
if (tascam->feedback_urbs[i]->transfer_buffer) {
|
||||
usb_free_coherent(tascam->dev, tascam->feedback_urb_alloc_size,
|
||||
tascam->feedback_urbs[i]->transfer_buffer,
|
||||
tascam->feedback_urbs[i]->transfer_dma);
|
||||
}
|
||||
usb_free_urb(tascam->feedback_urbs[i]);
|
||||
tascam->feedback_urbs[i] = NULL;
|
||||
}
|
||||
}
|
||||
error_free_playback_urbs:
|
||||
for (i = 0; i < NUM_PLAYBACK_URBS; i++) {
|
||||
if (tascam->playback_urbs[i]) {
|
||||
if (tascam->playback_urbs[i]->transfer_buffer) {
|
||||
usb_free_coherent(tascam->dev, tascam->playback_urb_alloc_size,
|
||||
tascam->playback_urbs[i]->transfer_buffer,
|
||||
tascam->playback_urbs[i]->transfer_dma);
|
||||
}
|
||||
usb_free_urb(tascam->playback_urbs[i]);
|
||||
tascam->playback_urbs[i] = NULL;
|
||||
}
|
||||
|
|
@ -690,19 +787,15 @@ static int tascam_pcm_close(struct snd_pcm_substream *substream)
|
|||
struct tascam_card *tascam = snd_pcm_substream_chip(substream);
|
||||
int i;
|
||||
|
||||
dev_info(tascam->card->dev, "PCM CLOSE\n");
|
||||
|
||||
atomic_set(&tascam->playback_active, 0);
|
||||
atomic_set(&tascam->feedback_active, 0);
|
||||
|
||||
for (i = 0; i < NUM_PLAYBACK_URBS; i++) {
|
||||
if (tascam->playback_urbs[i]) {
|
||||
usb_kill_urb(tascam->playback_urbs[i]);
|
||||
if (tascam->playback_urbs[i]->transfer_buffer) {
|
||||
usb_free_coherent(tascam->dev, tascam->playback_urb_alloc_size,
|
||||
tascam->playback_urbs[i]->transfer_buffer,
|
||||
tascam->playback_urbs[i]->transfer_dma);
|
||||
}
|
||||
usb_free_urb(tascam->playback_urbs[i]);
|
||||
tascam->playback_urbs[i] = NULL;
|
||||
}
|
||||
|
|
@ -711,11 +804,9 @@ static int tascam_pcm_close(struct snd_pcm_substream *substream)
|
|||
for (i = 0; i < NUM_FEEDBACK_URBS; i++) {
|
||||
if (tascam->feedback_urbs[i]) {
|
||||
usb_kill_urb(tascam->feedback_urbs[i]);
|
||||
if (tascam->feedback_urbs[i]->transfer_buffer) {
|
||||
usb_free_coherent(tascam->dev, tascam->feedback_urb_alloc_size,
|
||||
tascam->feedback_urbs[i]->transfer_buffer,
|
||||
tascam->feedback_urbs[i]->transfer_dma);
|
||||
}
|
||||
usb_free_urb(tascam->feedback_urbs[i]);
|
||||
tascam->feedback_urbs[i] = NULL;
|
||||
}
|
||||
|
|
@ -724,7 +815,6 @@ static int tascam_pcm_close(struct snd_pcm_substream *substream)
|
|||
return 0;
|
||||
}
|
||||
|
||||
// --- USB Driver Registration ---
|
||||
static const struct usb_device_id tascam_id_table[] = {
|
||||
{ USB_DEVICE(TASCAM_VID, TASCAM_PID) },
|
||||
{ }
|
||||
|
|
|
|||
Loading…
Reference in New Issue