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Diffstat (limited to 'sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c')
-rw-r--r--sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c361
1 files changed, 361 insertions, 0 deletions
diff --git a/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c b/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c
new file mode 100644
index 0000000..0a954dc
--- /dev/null
+++ b/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c
@@ -0,0 +1,361 @@
+/*
+ * Driver for Sound Core PDAudioCF soundcards
+ *
+ * PCM part
+ *
+ * Copyright (c) 2003 by Jaroslav Kysela <perex@suse.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 <sound/driver.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/delay.h>
+#include <sound/core.h>
+#include <sound/asoundef.h>
+#include "pdaudiocf.h"
+
+
+/*
+ * we use a vmalloc'ed (sg-)buffer
+ */
+
+/* get the physical page pointer on the given offset */
+static struct page *snd_pcm_get_vmalloc_page(snd_pcm_substream_t *subs, unsigned long offset)
+{
+ void *pageptr = subs->runtime->dma_area + offset;
+ return vmalloc_to_page(pageptr);
+}
+
+/*
+ * hw_params callback
+ * NOTE: this may be called not only once per pcm open!
+ */
+static int snd_pcm_alloc_vmalloc_buffer(snd_pcm_substream_t *subs, size_t size)
+{
+ snd_pcm_runtime_t *runtime = subs->runtime;
+ if (runtime->dma_area) {
+ if (runtime->dma_bytes >= size)
+ return 0; /* already enough large */
+ vfree_nocheck(runtime->dma_area);
+ }
+ runtime->dma_area = vmalloc_nocheck(size);
+ if (! runtime->dma_area)
+ return -ENOMEM;
+ runtime->dma_bytes = size;
+ return 0;
+}
+
+/*
+ * hw_free callback
+ * NOTE: this may be called not only once per pcm open!
+ */
+static int snd_pcm_free_vmalloc_buffer(snd_pcm_substream_t *subs)
+{
+ snd_pcm_runtime_t *runtime = subs->runtime;
+ if (runtime->dma_area) {
+ vfree_nocheck(runtime->dma_area);
+ runtime->dma_area = NULL;
+ }
+ return 0;
+}
+
+/*
+ * clear the SRAM contents
+ */
+static int pdacf_pcm_clear_sram(pdacf_t *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(snd_pcm_substream_t *subs, int cmd)
+{
+ pdacf_t *chip = snd_pcm_substream_chip(subs);
+ snd_pcm_runtime_t *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;
+ }
+ spin_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:
+ spin_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(snd_pcm_substream_t *subs,
+ snd_pcm_hw_params_t *hw_params)
+{
+ return snd_pcm_alloc_vmalloc_buffer(subs, params_buffer_bytes(hw_params));
+}
+
+/*
+ * pdacf_pcm_hw_free - hw_free callback for playback and capture
+ */
+static int pdacf_pcm_hw_free(snd_pcm_substream_t *subs)
+{
+ return snd_pcm_free_vmalloc_buffer(subs);
+}
+
+/*
+ * pdacf_pcm_prepare - prepare callback for playback and capture
+ */
+static int pdacf_pcm_prepare(snd_pcm_substream_t *subs)
+{
+ pdacf_t *chip = snd_pcm_substream_chip(subs);
+ snd_pcm_runtime_t *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 trough */
+ 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 snd_pcm_hardware_t 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),
+ .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(snd_pcm_substream_t *subs)
+{
+ snd_pcm_runtime_t *runtime = subs->runtime;
+ pdacf_t *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(snd_pcm_substream_t *subs)
+{
+ pdacf_t *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(snd_pcm_substream_t *subs)
+{
+ pdacf_t *chip = snd_pcm_substream_chip(subs);
+ return chip->pcm_hwptr;
+}
+
+/*
+ * operators for PCM capture
+ */
+static snd_pcm_ops_t 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_get_vmalloc_page,
+};
+
+
+/*
+ * free callback for pcm
+ */
+static void snd_pdacf_pcm_free(snd_pcm_t *pcm)
+{
+ pdacf_t *chip = pcm->private_data;
+ chip->pcm = NULL;
+}
+
+/*
+ * snd_pdacf_pcm_new - create and initialize a pcm
+ */
+int snd_pdacf_pcm_new(pdacf_t *chip)
+{
+ snd_pcm_t *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->private_free = snd_pdacf_pcm_free;
+ pcm->info_flags = 0;
+ 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;
+}
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