^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 2005-2006 Micronas USA Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/moduleparam.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <sound/core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <sound/pcm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <sound/initval.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include "go7007-priv.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) module_param_array(index, int, NULL, 0444);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) module_param_array(id, charp, NULL, 0444);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) module_param_array(enable, bool, NULL, 0444);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) MODULE_PARM_DESC(index, "Index value for the go7007 audio driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) MODULE_PARM_DESC(id, "ID string for the go7007 audio driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) MODULE_PARM_DESC(enable, "Enable for the go7007 audio driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct go7007_snd {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) struct snd_card *card;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct snd_pcm *pcm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct snd_pcm_substream *substream;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) spinlock_t lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) int w_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) int hw_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) int avail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) int capturing;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) static const struct snd_pcm_hardware go7007_snd_capture_hw = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) .info = (SNDRV_PCM_INFO_MMAP |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) SNDRV_PCM_INFO_INTERLEAVED |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) SNDRV_PCM_INFO_BLOCK_TRANSFER |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) SNDRV_PCM_INFO_MMAP_VALID),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) .formats = SNDRV_PCM_FMTBIT_S16_LE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) .rates = SNDRV_PCM_RATE_48000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) .rate_min = 48000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) .rate_max = 48000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) .channels_min = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) .channels_max = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) .buffer_bytes_max = (128*1024),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) .period_bytes_min = 4096,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) .period_bytes_max = (128*1024),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) .periods_min = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) .periods_max = 32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static void parse_audio_stream_data(struct go7007 *go, u8 *buf, int length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) struct go7007_snd *gosnd = go->snd_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) struct snd_pcm_runtime *runtime = gosnd->substream->runtime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) int frames = bytes_to_frames(runtime, length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) spin_lock_irqsave(&gosnd->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) gosnd->hw_ptr += frames;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) if (gosnd->hw_ptr >= runtime->buffer_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) gosnd->hw_ptr -= runtime->buffer_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) gosnd->avail += frames;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) spin_unlock_irqrestore(&gosnd->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) if (gosnd->w_idx + length > runtime->dma_bytes) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) int cpy = runtime->dma_bytes - gosnd->w_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) memcpy(runtime->dma_area + gosnd->w_idx, buf, cpy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) length -= cpy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) buf += cpy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) gosnd->w_idx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) memcpy(runtime->dma_area + gosnd->w_idx, buf, length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) gosnd->w_idx += length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) spin_lock_irqsave(&gosnd->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) if (gosnd->avail < runtime->period_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) spin_unlock_irqrestore(&gosnd->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) gosnd->avail -= runtime->period_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) spin_unlock_irqrestore(&gosnd->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) if (gosnd->capturing)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) snd_pcm_period_elapsed(gosnd->substream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) static int go7007_snd_hw_params(struct snd_pcm_substream *substream,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) struct snd_pcm_hw_params *hw_params)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) struct go7007 *go = snd_pcm_substream_chip(substream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) go->audio_deliver = parse_audio_stream_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) static int go7007_snd_hw_free(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct go7007 *go = snd_pcm_substream_chip(substream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) go->audio_deliver = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) static int go7007_snd_capture_open(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) struct go7007 *go = snd_pcm_substream_chip(substream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct go7007_snd *gosnd = go->snd_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) int r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) spin_lock_irqsave(&gosnd->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) if (gosnd->substream == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) gosnd->substream = substream;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) substream->runtime->hw = go7007_snd_capture_hw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) r = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) r = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) spin_unlock_irqrestore(&gosnd->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) return r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) static int go7007_snd_capture_close(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) struct go7007 *go = snd_pcm_substream_chip(substream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) struct go7007_snd *gosnd = go->snd_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) gosnd->substream = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) static int go7007_snd_pcm_prepare(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) static int go7007_snd_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) struct go7007 *go = snd_pcm_substream_chip(substream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) struct go7007_snd *gosnd = go->snd_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) case SNDRV_PCM_TRIGGER_START:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) /* Just set a flag to indicate we should signal ALSA when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) * sound comes in */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) gosnd->capturing = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) case SNDRV_PCM_TRIGGER_STOP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) gosnd->hw_ptr = gosnd->w_idx = gosnd->avail = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) gosnd->capturing = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) static snd_pcm_uframes_t go7007_snd_pcm_pointer(struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) struct go7007 *go = snd_pcm_substream_chip(substream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) struct go7007_snd *gosnd = go->snd_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) return gosnd->hw_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) static const struct snd_pcm_ops go7007_snd_capture_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) .open = go7007_snd_capture_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) .close = go7007_snd_capture_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) .hw_params = go7007_snd_hw_params,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) .hw_free = go7007_snd_hw_free,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) .prepare = go7007_snd_pcm_prepare,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) .trigger = go7007_snd_pcm_trigger,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) .pointer = go7007_snd_pcm_pointer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) static int go7007_snd_free(struct snd_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) struct go7007 *go = device->device_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) kfree(go->snd_context);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) go->snd_context = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) static struct snd_device_ops go7007_snd_device_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) .dev_free = go7007_snd_free,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) int go7007_snd_init(struct go7007 *go)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) static int dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) struct go7007_snd *gosnd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) if (dev >= SNDRV_CARDS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) if (!enable[dev]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) dev++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) gosnd = kmalloc(sizeof(struct go7007_snd), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) if (gosnd == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) spin_lock_init(&gosnd->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) gosnd->hw_ptr = gosnd->w_idx = gosnd->avail = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) gosnd->capturing = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) ret = snd_card_new(go->dev, index[dev], id[dev], THIS_MODULE, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) &gosnd->card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) goto free_snd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) ret = snd_device_new(gosnd->card, SNDRV_DEV_LOWLEVEL, go,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) &go7007_snd_device_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) goto free_card;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) ret = snd_pcm_new(gosnd->card, "go7007", 0, 0, 1, &gosnd->pcm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) goto free_card;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) strscpy(gosnd->card->driver, "go7007", sizeof(gosnd->card->driver));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) strscpy(gosnd->card->shortname, go->name, sizeof(gosnd->card->shortname));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) strscpy(gosnd->card->longname, gosnd->card->shortname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) sizeof(gosnd->card->longname));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) gosnd->pcm->private_data = go;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) snd_pcm_set_ops(gosnd->pcm, SNDRV_PCM_STREAM_CAPTURE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) &go7007_snd_capture_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) snd_pcm_set_managed_buffer_all(gosnd->pcm, SNDRV_DMA_TYPE_VMALLOC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) NULL, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) ret = snd_card_register(gosnd->card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) goto free_card;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) gosnd->substream = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) go->snd_context = gosnd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) v4l2_device_get(&go->v4l2_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) ++dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) free_card:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) snd_card_free(gosnd->card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) free_snd:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) kfree(gosnd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) EXPORT_SYMBOL(go7007_snd_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) int go7007_snd_remove(struct go7007 *go)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) struct go7007_snd *gosnd = go->snd_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) snd_card_disconnect(gosnd->card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) snd_card_free_when_closed(gosnd->card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) v4l2_device_put(&go->v4l2_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) EXPORT_SYMBOL(go7007_snd_remove);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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