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 000000000000..0a954dc11b73
--- /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;
+}