1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Driver for Sound Core PDAudioCF soundcards
7 * Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>
10 #include <linux/delay.h>
11 #include <sound/core.h>
12 #include <sound/asoundef.h>
13 #include "pdaudiocf.h"
17 * clear the SRAM contents
19 static int pdacf_pcm_clear_sram(struct snd_pdacf *chip)
21 int max_loop = 64 * 1024;
23 while (inw(chip->port + PDAUDIOCF_REG_RDP) != inw(chip->port + PDAUDIOCF_REG_WDP)) {
26 inw(chip->port + PDAUDIOCF_REG_MD);
32 * pdacf_pcm_trigger - trigger callback for capture
34 static int pdacf_pcm_trigger(struct snd_pcm_substream *subs, int cmd)
36 struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
37 struct snd_pcm_runtime *runtime = subs->runtime;
38 int inc, ret = 0, rate;
39 unsigned short mask, val, tmp;
41 if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
45 case SNDRV_PCM_TRIGGER_START:
49 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
50 case SNDRV_PCM_TRIGGER_RESUME:
52 val = PDAUDIOCF_RECORD;
54 rate = snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_STAT|AK4117_CHECK_NO_RATE);
56 case SNDRV_PCM_TRIGGER_STOP:
57 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
58 case SNDRV_PCM_TRIGGER_SUSPEND:
59 mask = PDAUDIOCF_RECORD;
67 mutex_lock(&chip->reg_lock);
68 chip->pcm_running += inc;
69 tmp = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
70 if (chip->pcm_running) {
71 if ((chip->ak4117->rcs0 & AK4117_UNLCK) || runtime->rate != rate) {
72 chip->pcm_running -= inc;
79 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, tmp);
81 mutex_unlock(&chip->reg_lock);
82 snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_RATE);
87 * pdacf_pcm_prepare - prepare callback for playback and capture
89 static int pdacf_pcm_prepare(struct snd_pcm_substream *subs)
91 struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
92 struct snd_pcm_runtime *runtime = subs->runtime;
95 if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
98 chip->pcm_channels = runtime->channels;
100 chip->pcm_little = snd_pcm_format_little_endian(runtime->format) > 0;
101 #ifdef SNDRV_LITTLE_ENDIAN
102 chip->pcm_swab = snd_pcm_format_big_endian(runtime->format) > 0;
104 chip->pcm_swab = chip->pcm_little;
107 if (snd_pcm_format_unsigned(runtime->format))
108 chip->pcm_xor = 0x80008000;
110 if (pdacf_pcm_clear_sram(chip) < 0)
113 val = nval = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
114 nval &= ~(PDAUDIOCF_DATAFMT0|PDAUDIOCF_DATAFMT1);
115 switch (runtime->format) {
116 case SNDRV_PCM_FORMAT_S16_LE:
117 case SNDRV_PCM_FORMAT_S16_BE:
119 default: /* 24-bit */
120 nval |= PDAUDIOCF_DATAFMT0 | PDAUDIOCF_DATAFMT1;
124 chip->pcm_sample = 4;
125 switch (runtime->format) {
126 case SNDRV_PCM_FORMAT_S16_LE:
127 case SNDRV_PCM_FORMAT_S16_BE:
128 aval = AK4117_DIF_16R;
130 chip->pcm_sample = 2;
132 case SNDRV_PCM_FORMAT_S24_3LE:
133 case SNDRV_PCM_FORMAT_S24_3BE:
134 chip->pcm_sample = 3;
136 default: /* 24-bit */
137 aval = AK4117_DIF_24R;
139 chip->pcm_xor &= 0xffff0000;
144 snd_ak4117_reg_write(chip->ak4117, AK4117_REG_IO, AK4117_DIF2|AK4117_DIF1|AK4117_DIF0, aval);
145 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, nval);
148 val = pdacf_reg_read(chip, PDAUDIOCF_REG_IER);
149 val &= ~(PDAUDIOCF_IRQLVLEN1);
150 val |= PDAUDIOCF_IRQLVLEN0;
151 pdacf_reg_write(chip, PDAUDIOCF_REG_IER, val);
153 chip->pcm_size = runtime->buffer_size;
154 chip->pcm_period = runtime->period_size;
155 chip->pcm_area = runtime->dma_area;
162 * capture hw information
165 static const struct snd_pcm_hardware pdacf_pcm_capture_hw = {
166 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
167 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME |
168 SNDRV_PCM_INFO_MMAP_VALID |
169 SNDRV_PCM_INFO_BATCH),
170 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
171 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
172 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
173 .rates = SNDRV_PCM_RATE_32000 |
174 SNDRV_PCM_RATE_44100 |
175 SNDRV_PCM_RATE_48000 |
176 SNDRV_PCM_RATE_88200 |
177 SNDRV_PCM_RATE_96000 |
178 SNDRV_PCM_RATE_176400 |
179 SNDRV_PCM_RATE_192000,
184 .buffer_bytes_max = (512*1024),
185 .period_bytes_min = 8*1024,
186 .period_bytes_max = (64*1024),
194 * pdacf_pcm_capture_open - open callback for capture
196 static int pdacf_pcm_capture_open(struct snd_pcm_substream *subs)
198 struct snd_pcm_runtime *runtime = subs->runtime;
199 struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
201 if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
204 runtime->hw = pdacf_pcm_capture_hw;
205 runtime->private_data = chip;
206 chip->pcm_substream = subs;
212 * pdacf_pcm_capture_close - close callback for capture
214 static int pdacf_pcm_capture_close(struct snd_pcm_substream *subs)
216 struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
220 pdacf_reinit(chip, 0);
221 chip->pcm_substream = NULL;
227 * pdacf_pcm_capture_pointer - pointer callback for capture
229 static snd_pcm_uframes_t pdacf_pcm_capture_pointer(struct snd_pcm_substream *subs)
231 struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
232 return chip->pcm_hwptr;
236 * operators for PCM capture
238 static const struct snd_pcm_ops pdacf_pcm_capture_ops = {
239 .open = pdacf_pcm_capture_open,
240 .close = pdacf_pcm_capture_close,
241 .prepare = pdacf_pcm_prepare,
242 .trigger = pdacf_pcm_trigger,
243 .pointer = pdacf_pcm_capture_pointer,
248 * snd_pdacf_pcm_new - create and initialize a pcm
250 int snd_pdacf_pcm_new(struct snd_pdacf *chip)
255 err = snd_pcm_new(chip->card, "PDAudioCF", 0, 0, 1, &pcm);
259 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pdacf_pcm_capture_ops);
260 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC,
261 snd_dma_continuous_data(GFP_KERNEL | GFP_DMA32),
264 pcm->private_data = chip;
266 pcm->nonatomic = true;
267 strcpy(pcm->name, chip->card->shortname);
270 err = snd_ak4117_build(chip->ak4117, pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream);