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Diffstat (limited to 'kernel/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c')
-rw-r--r--kernel/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c308
1 files changed, 308 insertions, 0 deletions
diff --git a/kernel/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c b/kernel/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c
new file mode 100644
index 000000000..b48aa0a78
--- /dev/null
+++ b/kernel/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c
@@ -0,0 +1,308 @@
+/*
+ * Driver for Sound Core PDAudioCF soundcards
+ *
+ * PCM part
+ *
+ * Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/delay.h>
+#include <sound/core.h>
+#include <sound/asoundef.h>
+#include "pdaudiocf.h"
+
+
+/*
+ * clear the SRAM contents
+ */
+static int pdacf_pcm_clear_sram(struct snd_pdacf *chip)
+{
+ int max_loop = 64 * 1024;
+
+ while (inw(chip->port + PDAUDIOCF_REG_RDP) != inw(chip->port + PDAUDIOCF_REG_WDP)) {
+ if (max_loop-- < 0)
+ return -EIO;
+ inw(chip->port + PDAUDIOCF_REG_MD);
+ }
+ return 0;
+}
+
+/*
+ * pdacf_pcm_trigger - trigger callback for capture
+ */
+static int pdacf_pcm_trigger(struct snd_pcm_substream *subs, int cmd)
+{
+ struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
+ struct snd_pcm_runtime *runtime = subs->runtime;
+ int inc, ret = 0, rate;
+ unsigned short mask, val, tmp;
+
+ if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
+ return -EBUSY;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ chip->pcm_hwptr = 0;
+ chip->pcm_tdone = 0;
+ /* fall thru */
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ mask = 0;
+ val = PDAUDIOCF_RECORD;
+ inc = 1;
+ rate = snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_STAT|AK4117_CHECK_NO_RATE);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ mask = PDAUDIOCF_RECORD;
+ val = 0;
+ inc = -1;
+ rate = 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+ mutex_lock(&chip->reg_lock);
+ chip->pcm_running += inc;
+ tmp = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
+ if (chip->pcm_running) {
+ if ((chip->ak4117->rcs0 & AK4117_UNLCK) || runtime->rate != rate) {
+ chip->pcm_running -= inc;
+ ret = -EIO;
+ goto __end;
+ }
+ }
+ tmp &= ~mask;
+ tmp |= val;
+ pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, tmp);
+ __end:
+ mutex_unlock(&chip->reg_lock);
+ snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_RATE);
+ return ret;
+}
+
+/*
+ * pdacf_pcm_hw_params - hw_params callback for playback and capture
+ */
+static int pdacf_pcm_hw_params(struct snd_pcm_substream *subs,
+ struct snd_pcm_hw_params *hw_params)
+{
+ return snd_pcm_lib_alloc_vmalloc_32_buffer
+ (subs, params_buffer_bytes(hw_params));
+}
+
+/*
+ * pdacf_pcm_hw_free - hw_free callback for playback and capture
+ */
+static int pdacf_pcm_hw_free(struct snd_pcm_substream *subs)
+{
+ return snd_pcm_lib_free_vmalloc_buffer(subs);
+}
+
+/*
+ * pdacf_pcm_prepare - prepare callback for playback and capture
+ */
+static int pdacf_pcm_prepare(struct snd_pcm_substream *subs)
+{
+ struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
+ struct snd_pcm_runtime *runtime = subs->runtime;
+ u16 val, nval, aval;
+
+ if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
+ return -EBUSY;
+
+ chip->pcm_channels = runtime->channels;
+
+ chip->pcm_little = snd_pcm_format_little_endian(runtime->format) > 0;
+#ifdef SNDRV_LITTLE_ENDIAN
+ chip->pcm_swab = snd_pcm_format_big_endian(runtime->format) > 0;
+#else
+ chip->pcm_swab = chip->pcm_little;
+#endif
+
+ if (snd_pcm_format_unsigned(runtime->format))
+ chip->pcm_xor = 0x80008000;
+
+ if (pdacf_pcm_clear_sram(chip) < 0)
+ return -EIO;
+
+ val = nval = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
+ nval &= ~(PDAUDIOCF_DATAFMT0|PDAUDIOCF_DATAFMT1);
+ switch (runtime->format) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ case SNDRV_PCM_FORMAT_S16_BE:
+ break;
+ default: /* 24-bit */
+ nval |= PDAUDIOCF_DATAFMT0 | PDAUDIOCF_DATAFMT1;
+ break;
+ }
+ aval = 0;
+ chip->pcm_sample = 4;
+ switch (runtime->format) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ case SNDRV_PCM_FORMAT_S16_BE:
+ aval = AK4117_DIF_16R;
+ chip->pcm_frame = 2;
+ chip->pcm_sample = 2;
+ break;
+ case SNDRV_PCM_FORMAT_S24_3LE:
+ case SNDRV_PCM_FORMAT_S24_3BE:
+ chip->pcm_sample = 3;
+ /* fall through */
+ default: /* 24-bit */
+ aval = AK4117_DIF_24R;
+ chip->pcm_frame = 3;
+ chip->pcm_xor &= 0xffff0000;
+ break;
+ }
+
+ if (val != nval) {
+ snd_ak4117_reg_write(chip->ak4117, AK4117_REG_IO, AK4117_DIF2|AK4117_DIF1|AK4117_DIF0, aval);
+ pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, nval);
+ }
+
+ val = pdacf_reg_read(chip, PDAUDIOCF_REG_IER);
+ val &= ~(PDAUDIOCF_IRQLVLEN1);
+ val |= PDAUDIOCF_IRQLVLEN0;
+ pdacf_reg_write(chip, PDAUDIOCF_REG_IER, val);
+
+ chip->pcm_size = runtime->buffer_size;
+ chip->pcm_period = runtime->period_size;
+ chip->pcm_area = runtime->dma_area;
+
+ return 0;
+}
+
+
+/*
+ * capture hw information
+ */
+
+static struct snd_pcm_hardware pdacf_pcm_capture_hw = {
+ .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME |
+ SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_BATCH),
+ .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
+ SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
+ SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
+ .rates = SNDRV_PCM_RATE_32000 |
+ SNDRV_PCM_RATE_44100 |
+ SNDRV_PCM_RATE_48000 |
+ SNDRV_PCM_RATE_88200 |
+ SNDRV_PCM_RATE_96000 |
+ SNDRV_PCM_RATE_176400 |
+ SNDRV_PCM_RATE_192000,
+ .rate_min = 32000,
+ .rate_max = 192000,
+ .channels_min = 1,
+ .channels_max = 2,
+ .buffer_bytes_max = (512*1024),
+ .period_bytes_min = 8*1024,
+ .period_bytes_max = (64*1024),
+ .periods_min = 2,
+ .periods_max = 128,
+ .fifo_size = 0,
+};
+
+
+/*
+ * pdacf_pcm_capture_open - open callback for capture
+ */
+static int pdacf_pcm_capture_open(struct snd_pcm_substream *subs)
+{
+ struct snd_pcm_runtime *runtime = subs->runtime;
+ struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
+
+ if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
+ return -EBUSY;
+
+ runtime->hw = pdacf_pcm_capture_hw;
+ runtime->private_data = chip;
+ chip->pcm_substream = subs;
+
+ return 0;
+}
+
+/*
+ * pdacf_pcm_capture_close - close callback for capture
+ */
+static int pdacf_pcm_capture_close(struct snd_pcm_substream *subs)
+{
+ struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
+
+ if (!chip)
+ return -EINVAL;
+ pdacf_reinit(chip, 0);
+ chip->pcm_substream = NULL;
+ return 0;
+}
+
+
+/*
+ * pdacf_pcm_capture_pointer - pointer callback for capture
+ */
+static snd_pcm_uframes_t pdacf_pcm_capture_pointer(struct snd_pcm_substream *subs)
+{
+ struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
+ return chip->pcm_hwptr;
+}
+
+/*
+ * operators for PCM capture
+ */
+static struct snd_pcm_ops pdacf_pcm_capture_ops = {
+ .open = pdacf_pcm_capture_open,
+ .close = pdacf_pcm_capture_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = pdacf_pcm_hw_params,
+ .hw_free = pdacf_pcm_hw_free,
+ .prepare = pdacf_pcm_prepare,
+ .trigger = pdacf_pcm_trigger,
+ .pointer = pdacf_pcm_capture_pointer,
+ .page = snd_pcm_lib_get_vmalloc_page,
+ .mmap = snd_pcm_lib_mmap_vmalloc,
+};
+
+
+/*
+ * snd_pdacf_pcm_new - create and initialize a pcm
+ */
+int snd_pdacf_pcm_new(struct snd_pdacf *chip)
+{
+ struct snd_pcm *pcm;
+ int err;
+
+ err = snd_pcm_new(chip->card, "PDAudioCF", 0, 0, 1, &pcm);
+ if (err < 0)
+ return err;
+
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pdacf_pcm_capture_ops);
+
+ pcm->private_data = chip;
+ pcm->info_flags = 0;
+ pcm->nonatomic = true;
+ strcpy(pcm->name, chip->card->shortname);
+ chip->pcm = pcm;
+
+ err = snd_ak4117_build(chip->ak4117, pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream);
+ if (err < 0)
+ return err;
+
+ return 0;
+}