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- #include <linux/init.h>
- #include <linux/slab.h>
- #include <linux/usb.h>
- #include <linux/usb/audio.h>
- #include <linux/usb/audio-v2.h>
- #include <sound/core.h>
- #include <sound/pcm.h>
- #include "usbaudio.h"
- #include "card.h"
- #include "quirks.h"
- #include "helper.h"
- #include "debug.h"
- #include "clock.h"
- #include "format.h"
- static u64 parse_audio_format_i_type(struct snd_usb_audio *chip,
- struct audioformat *fp,
- unsigned int format, void *_fmt)
- {
- int sample_width, sample_bytes;
- u64 pcm_formats = 0;
- switch (fp->protocol) {
- case UAC_VERSION_1:
- default: {
- struct uac_format_type_i_discrete_descriptor *fmt = _fmt;
- sample_width = fmt->bBitResolution;
- sample_bytes = fmt->bSubframeSize;
- format = 1 << format;
- break;
- }
- case UAC_VERSION_2: {
- struct uac_format_type_i_ext_descriptor *fmt = _fmt;
- sample_width = fmt->bBitResolution;
- sample_bytes = fmt->bSubslotSize;
- if (format & UAC2_FORMAT_TYPE_I_RAW_DATA)
- pcm_formats |= SNDRV_PCM_FMTBIT_SPECIAL;
- format <<= 1;
- break;
- }
- }
- if ((pcm_formats == 0) &&
- (format == 0 || format == (1 << UAC_FORMAT_TYPE_I_UNDEFINED))) {
-
- usb_audio_info(chip, "%u:%d : format type 0 is detected, processed as PCM\n",
- fp->iface, fp->altsetting);
- format = 1 << UAC_FORMAT_TYPE_I_PCM;
- }
- if (format & (1 << UAC_FORMAT_TYPE_I_PCM)) {
- if (((chip->usb_id == USB_ID(0x0582, 0x0016)) ||
-
- (chip->usb_id == USB_ID(0x0582, 0x000c))) &&
-
- sample_width == 24 && sample_bytes == 2)
- sample_bytes = 3;
- else if (sample_width > sample_bytes * 8) {
- usb_audio_info(chip, "%u:%d : sample bitwidth %d in over sample bytes %d\n",
- fp->iface, fp->altsetting,
- sample_width, sample_bytes);
- }
-
- switch (sample_bytes) {
- case 1:
- pcm_formats |= SNDRV_PCM_FMTBIT_S8;
- break;
- case 2:
- if (snd_usb_is_big_endian_format(chip, fp))
- pcm_formats |= SNDRV_PCM_FMTBIT_S16_BE;
- else
- pcm_formats |= SNDRV_PCM_FMTBIT_S16_LE;
- break;
- case 3:
- if (snd_usb_is_big_endian_format(chip, fp))
- pcm_formats |= SNDRV_PCM_FMTBIT_S24_3BE;
- else
- pcm_formats |= SNDRV_PCM_FMTBIT_S24_3LE;
- break;
- case 4:
- pcm_formats |= SNDRV_PCM_FMTBIT_S32_LE;
- break;
- default:
- usb_audio_info(chip,
- "%u:%d : unsupported sample bitwidth %d in %d bytes\n",
- fp->iface, fp->altsetting,
- sample_width, sample_bytes);
- break;
- }
- }
- if (format & (1 << UAC_FORMAT_TYPE_I_PCM8)) {
-
- if (chip->usb_id == USB_ID(0x04fa, 0x4201))
- pcm_formats |= SNDRV_PCM_FMTBIT_S8;
- else
- pcm_formats |= SNDRV_PCM_FMTBIT_U8;
- }
- if (format & (1 << UAC_FORMAT_TYPE_I_IEEE_FLOAT)) {
- pcm_formats |= SNDRV_PCM_FMTBIT_FLOAT_LE;
- }
- if (format & (1 << UAC_FORMAT_TYPE_I_ALAW)) {
- pcm_formats |= SNDRV_PCM_FMTBIT_A_LAW;
- }
- if (format & (1 << UAC_FORMAT_TYPE_I_MULAW)) {
- pcm_formats |= SNDRV_PCM_FMTBIT_MU_LAW;
- }
- if (format & ~0x3f) {
- usb_audio_info(chip,
- "%u:%d : unsupported format bits %#x\n",
- fp->iface, fp->altsetting, format);
- }
- pcm_formats |= snd_usb_interface_dsd_format_quirks(chip, fp, sample_bytes);
- return pcm_formats;
- }
- static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audioformat *fp,
- unsigned char *fmt, int offset)
- {
- int nr_rates = fmt[offset];
- if (fmt[0] < offset + 1 + 3 * (nr_rates ? nr_rates : 2)) {
- usb_audio_err(chip,
- "%u:%d : invalid UAC_FORMAT_TYPE desc\n",
- fp->iface, fp->altsetting);
- return -EINVAL;
- }
- if (nr_rates) {
-
- int r, idx;
- fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL);
- if (fp->rate_table == NULL) {
- usb_audio_err(chip, "cannot malloc\n");
- return -ENOMEM;
- }
- fp->nr_rates = 0;
- fp->rate_min = fp->rate_max = 0;
- for (r = 0, idx = offset + 1; r < nr_rates; r++, idx += 3) {
- unsigned int rate = combine_triple(&fmt[idx]);
- if (!rate)
- continue;
-
-
- if (rate == 48000 && nr_rates == 1 &&
- (chip->usb_id == USB_ID(0x0d8c, 0x0201) ||
- chip->usb_id == USB_ID(0x0d8c, 0x0102) ||
- chip->usb_id == USB_ID(0x0ccd, 0x00b1)) &&
- fp->altsetting == 5 && fp->maxpacksize == 392)
- rate = 96000;
-
- if (rate == 16000 &&
- (chip->usb_id == USB_ID(0x041e, 0x4064) ||
- chip->usb_id == USB_ID(0x041e, 0x4068)))
- rate = 8000;
- fp->rate_table[fp->nr_rates] = rate;
- if (!fp->rate_min || rate < fp->rate_min)
- fp->rate_min = rate;
- if (!fp->rate_max || rate > fp->rate_max)
- fp->rate_max = rate;
- fp->rates |= snd_pcm_rate_to_rate_bit(rate);
- fp->nr_rates++;
- }
- if (!fp->nr_rates) {
- hwc_debug("All rates were zero. Skipping format!\n");
- return -EINVAL;
- }
- } else {
-
- fp->rates = SNDRV_PCM_RATE_CONTINUOUS;
- fp->rate_min = combine_triple(&fmt[offset + 1]);
- fp->rate_max = combine_triple(&fmt[offset + 4]);
- }
- return 0;
- }
- static int parse_uac2_sample_rate_range(struct snd_usb_audio *chip,
- struct audioformat *fp, int nr_triplets,
- const unsigned char *data)
- {
- int i, nr_rates = 0;
- fp->rates = fp->rate_min = fp->rate_max = 0;
- for (i = 0; i < nr_triplets; i++) {
- int min = combine_quad(&data[2 + 12 * i]);
- int max = combine_quad(&data[6 + 12 * i]);
- int res = combine_quad(&data[10 + 12 * i]);
- unsigned int rate;
- if ((max < 0) || (min < 0) || (res < 0) || (max < min))
- continue;
-
- if (res == 1) {
- fp->rate_min = min;
- fp->rate_max = max;
- fp->rates = SNDRV_PCM_RATE_CONTINUOUS;
- return 0;
- }
- for (rate = min; rate <= max; rate += res) {
- if (fp->rate_table)
- fp->rate_table[nr_rates] = rate;
- if (!fp->rate_min || rate < fp->rate_min)
- fp->rate_min = rate;
- if (!fp->rate_max || rate > fp->rate_max)
- fp->rate_max = rate;
- fp->rates |= snd_pcm_rate_to_rate_bit(rate);
- nr_rates++;
- if (nr_rates >= MAX_NR_RATES) {
- usb_audio_err(chip, "invalid uac2 rates\n");
- break;
- }
-
- if (res == 0)
- break;
- }
- }
- return nr_rates;
- }
- static int parse_audio_format_rates_v2(struct snd_usb_audio *chip,
- struct audioformat *fp)
- {
- struct usb_device *dev = chip->dev;
- unsigned char tmp[2], *data;
- int nr_triplets, data_size, ret = 0;
- int clock = snd_usb_clock_find_source(chip, fp->clock, false);
- if (clock < 0) {
- dev_err(&dev->dev,
- "%s(): unable to find clock source (clock %d)\n",
- __func__, clock);
- goto err;
- }
-
- ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE,
- USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
- UAC2_CS_CONTROL_SAM_FREQ << 8,
- snd_usb_ctrl_intf(chip) | (clock << 8),
- tmp, sizeof(tmp));
- if (ret < 0) {
- dev_err(&dev->dev,
- "%s(): unable to retrieve number of sample rates (clock %d)\n",
- __func__, clock);
- goto err;
- }
- nr_triplets = (tmp[1] << 8) | tmp[0];
- data_size = 2 + 12 * nr_triplets;
- data = kzalloc(data_size, GFP_KERNEL);
- if (!data) {
- ret = -ENOMEM;
- goto err;
- }
-
- ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE,
- USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
- UAC2_CS_CONTROL_SAM_FREQ << 8,
- snd_usb_ctrl_intf(chip) | (clock << 8),
- data, data_size);
- if (ret < 0) {
- dev_err(&dev->dev,
- "%s(): unable to retrieve sample rate range (clock %d)\n",
- __func__, clock);
- ret = -EINVAL;
- goto err_free;
- }
-
- kfree(fp->rate_table);
- fp->rate_table = NULL;
- fp->nr_rates = parse_uac2_sample_rate_range(chip, fp, nr_triplets, data);
- if (fp->nr_rates == 0) {
-
- ret = 0;
- goto err_free;
- }
- fp->rate_table = kmalloc(sizeof(int) * fp->nr_rates, GFP_KERNEL);
- if (!fp->rate_table) {
- ret = -ENOMEM;
- goto err_free;
- }
-
- parse_uac2_sample_rate_range(chip, fp, nr_triplets, data);
- err_free:
- kfree(data);
- err:
- return ret;
- }
- static int parse_audio_format_i(struct snd_usb_audio *chip,
- struct audioformat *fp, unsigned int format,
- struct uac_format_type_i_continuous_descriptor *fmt)
- {
- snd_pcm_format_t pcm_format;
- int ret;
- if (fmt->bFormatType == UAC_FORMAT_TYPE_III) {
-
- switch (chip->usb_id) {
- case USB_ID(0x0763, 0x2003):
- if (chip->setup == 0x00 &&
- fp->altsetting == 6)
- pcm_format = SNDRV_PCM_FORMAT_S16_BE;
- else
- pcm_format = SNDRV_PCM_FORMAT_S16_LE;
- break;
- default:
- pcm_format = SNDRV_PCM_FORMAT_S16_LE;
- }
- fp->formats = pcm_format_to_bits(pcm_format);
- } else {
- fp->formats = parse_audio_format_i_type(chip, fp, format, fmt);
- if (!fp->formats)
- return -EINVAL;
- }
-
-
- switch (fp->protocol) {
- default:
- case UAC_VERSION_1:
- fp->channels = fmt->bNrChannels;
- ret = parse_audio_format_rates_v1(chip, fp, (unsigned char *) fmt, 7);
- break;
- case UAC_VERSION_2:
-
- ret = parse_audio_format_rates_v2(chip, fp);
- break;
- }
- if (fp->channels < 1) {
- usb_audio_err(chip,
- "%u:%d : invalid channels %d\n",
- fp->iface, fp->altsetting, fp->channels);
- return -EINVAL;
- }
- return ret;
- }
- static int parse_audio_format_ii(struct snd_usb_audio *chip,
- struct audioformat *fp,
- int format, void *_fmt)
- {
- int brate, framesize, ret;
- switch (format) {
- case UAC_FORMAT_TYPE_II_AC3:
-
-
- fp->formats = SNDRV_PCM_FMTBIT_U8;
- break;
- case UAC_FORMAT_TYPE_II_MPEG:
- fp->formats = SNDRV_PCM_FMTBIT_MPEG;
- break;
- default:
- usb_audio_info(chip,
- "%u:%d : unknown format tag %#x is detected. processed as MPEG.\n",
- fp->iface, fp->altsetting, format);
- fp->formats = SNDRV_PCM_FMTBIT_MPEG;
- break;
- }
- fp->channels = 1;
- switch (fp->protocol) {
- default:
- case UAC_VERSION_1: {
- struct uac_format_type_ii_discrete_descriptor *fmt = _fmt;
- brate = le16_to_cpu(fmt->wMaxBitRate);
- framesize = le16_to_cpu(fmt->wSamplesPerFrame);
- usb_audio_info(chip, "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize);
- fp->frame_size = framesize;
- ret = parse_audio_format_rates_v1(chip, fp, _fmt, 8);
- break;
- }
- case UAC_VERSION_2: {
- struct uac_format_type_ii_ext_descriptor *fmt = _fmt;
- brate = le16_to_cpu(fmt->wMaxBitRate);
- framesize = le16_to_cpu(fmt->wSamplesPerFrame);
- usb_audio_info(chip, "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize);
- fp->frame_size = framesize;
- ret = parse_audio_format_rates_v2(chip, fp);
- break;
- }
- }
- return ret;
- }
- int snd_usb_parse_audio_format(struct snd_usb_audio *chip,
- struct audioformat *fp, unsigned int format,
- struct uac_format_type_i_continuous_descriptor *fmt,
- int stream)
- {
- int err;
- switch (fmt->bFormatType) {
- case UAC_FORMAT_TYPE_I:
- case UAC_FORMAT_TYPE_III:
- err = parse_audio_format_i(chip, fp, format, fmt);
- break;
- case UAC_FORMAT_TYPE_II:
- err = parse_audio_format_ii(chip, fp, format, fmt);
- break;
- default:
- usb_audio_info(chip,
- "%u:%d : format type %d is not supported yet\n",
- fp->iface, fp->altsetting,
- fmt->bFormatType);
- return -ENOTSUPP;
- }
- fp->fmt_type = fmt->bFormatType;
- if (err < 0)
- return err;
- #if 1
-
-
- if (chip->usb_id == USB_ID(0x041e, 0x3000) ||
- chip->usb_id == USB_ID(0x041e, 0x3020) ||
- chip->usb_id == USB_ID(0x041e, 0x3061)) {
- if (fmt->bFormatType == UAC_FORMAT_TYPE_I &&
- fp->rates != SNDRV_PCM_RATE_48000 &&
- fp->rates != SNDRV_PCM_RATE_96000)
- return -ENOTSUPP;
- }
- #endif
- return 0;
- }
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