ALSA: Add support of AudioScience ASI boards

Added the support of AudioScience ASI boards.
The driver has been tested for years on alsa-driver external tree,
now finally got merged to the kernel.

Signed-off-by: Eliot Blennerhassett <eblennerhassett@audioscience.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 3002 insertions, 0 deletions

diff --git a/sound/pci/asihpi/asihpi.c b/sound/pci/asihpi/asihpi.c
new file mode 100644
index 00000000000..f74c7372b3d
--- /dev/null
+++ b/sound/pci/asihpi/asihpi.c
@@ -0,0 +1,3002 @@
+/*
+ *  Asihpi soundcard
+ *  Copyright (c) by AudioScience Inc <alsa@audioscience.com>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of version 2 of the GNU General Public License as
+ *   published by the Free Software Foundation;
+ *
+ *   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
+ *
+ *
+ *  The following is not a condition of use, merely a request:
+ *  If you modify this program, particularly if you fix errors, AudioScience Inc
+ *  would appreciate it if you grant us the right to use those modifications
+ *  for any purpose including commercial applications.
+ */
+/* >0: print Hw params, timer vars. >1: print stream write/copy sizes  */
+#define REALLY_VERBOSE_LOGGING 0
+
+#if REALLY_VERBOSE_LOGGING
+#define VPRINTK1 snd_printd
+#else
+#define VPRINTK1(...)
+#endif
+
+#if REALLY_VERBOSE_LOGGING > 1
+#define VPRINTK2 snd_printd
+#else
+#define VPRINTK2(...)
+#endif
+
+#ifndef ASI_STYLE_NAMES
+/* not sure how ALSA style name should look */
+#define ASI_STYLE_NAMES 1
+#endif
+
+#include "hpi_internal.h"
+#include "hpimsginit.h"
+#include "hpioctl.h"
+
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/jiffies.h>
+#include <linux/slab.h>
+#include <linux/time.h>
+#include <linux/wait.h>
+#include <sound/core.h>
+#include <sound/control.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/info.h>
+#include <sound/initval.h>
+#include <sound/tlv.h>
+#include <sound/hwdep.h>
+
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("AudioScience inc. <support@audioscience.com>");
+MODULE_DESCRIPTION("AudioScience ALSA ASI5000 ASI6000 ASI87xx ASI89xx");
+
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* index 0-MAX */
+static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
+static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
+static int enable_hpi_hwdep = 1;
+
+module_param_array(index, int, NULL, S_IRUGO);
+MODULE_PARM_DESC(index, "ALSA index value for AudioScience soundcard.");
+
+module_param_array(id, charp, NULL, S_IRUGO);
+MODULE_PARM_DESC(id, "ALSA ID string for AudioScience soundcard.");
+
+module_param_array(enable, bool, NULL, S_IRUGO);
+MODULE_PARM_DESC(enable, "ALSA enable AudioScience soundcard.");
+
+module_param(enable_hpi_hwdep, bool, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(enable_hpi_hwdep,
+		"ALSA enable HPI hwdep for AudioScience soundcard ");
+
+/* identify driver */
+#ifdef KERNEL_ALSA_BUILD
+static char *build_info = "built using headers from kernel source";
+module_param(build_info, charp, S_IRUGO);
+MODULE_PARM_DESC(build_info, "built using headers from kernel source");
+#else
+static char *build_info = "built within ALSA source";
+module_param(build_info, charp, S_IRUGO);
+MODULE_PARM_DESC(build_info, "built within ALSA source");
+#endif
+
+/* set to 1 to dump every control from adapter to log */
+static const int mixer_dump;
+
+#define DEFAULT_SAMPLERATE 44100
+static int adapter_fs = DEFAULT_SAMPLERATE;
+
+static struct hpi_hsubsys *ss;	/* handle to HPI audio subsystem */
+
+/* defaults */
+#define PERIODS_MIN 2
+#define PERIOD_BYTES_MIN  2304
+#define BUFFER_BYTES_MAX (512 * 1024)
+
+/*#define TIMER_MILLISECONDS 20
+#define FORCE_TIMER_JIFFIES ((TIMER_MILLISECONDS * HZ + 999)/1000)
+*/
+
+#define MAX_CLOCKSOURCES (HPI_SAMPLECLOCK_SOURCE_LAST + 1 + 7)
+
+struct clk_source {
+	int source;
+	int index;
+	char *name;
+};
+
+struct clk_cache {
+	int count;
+	int has_local;
+	struct clk_source s[MAX_CLOCKSOURCES];
+};
+
+/* Per card data */
+struct snd_card_asihpi {
+	struct snd_card *card;
+	struct pci_dev *pci;
+	u16 adapter_index;
+	u32 serial_number;
+	u16 type;
+	u16 version;
+	u16 num_outstreams;
+	u16 num_instreams;
+
+	u32 h_mixer;
+	struct clk_cache cc;
+
+	u16 support_mmap;
+	u16 support_grouping;
+	u16 support_mrx;
+	u16 update_interval_frames;
+	u16 in_max_chans;
+	u16 out_max_chans;
+};
+
+/* Per stream data */
+struct snd_card_asihpi_pcm {
+	struct timer_list timer;
+	unsigned int respawn_timer;
+	unsigned int hpi_buffer_attached;
+	unsigned int pcm_size;
+	unsigned int pcm_count;
+	unsigned int bytes_per_sec;
+	unsigned int pcm_irq_pos;	/* IRQ position */
+	unsigned int pcm_buf_pos;	/* position in buffer */
+	struct snd_pcm_substream *substream;
+	u32 h_stream;
+	struct hpi_format format;
+};
+
+/* universal stream verbs work with out or in stream handles */
+
+/* Functions to allow driver to give a buffer to HPI for busmastering */
+
+static u16 hpi_stream_host_buffer_attach(
+	struct hpi_hsubsys *hS,
+	u32 h_stream,   /* handle to outstream. */
+	u32 size_in_bytes, /* size in bytes of bus mastering buffer */
+	u32 pci_address
+)
+{
+	struct hpi_message hm;
+	struct hpi_response hr;
+	unsigned int obj = hpi_handle_object(h_stream);
+
+	if (!h_stream)
+		return HPI_ERROR_INVALID_OBJ;
+	hpi_init_message_response(&hm, &hr, obj,
+			obj == HPI_OBJ_OSTREAM ?
+				HPI_OSTREAM_HOSTBUFFER_ALLOC :
+				HPI_ISTREAM_HOSTBUFFER_ALLOC);
+
+	hpi_handle_to_indexes(h_stream, &hm.adapter_index,
+				&hm.obj_index);
+
+	hm.u.d.u.buffer.buffer_size = size_in_bytes;
+	hm.u.d.u.buffer.pci_address = pci_address;
+	hm.u.d.u.buffer.command = HPI_BUFFER_CMD_INTERNAL_GRANTADAPTER;
+	hpi_send_recv(&hm, &hr);
+	return hr.error;
+}
+
+static u16 hpi_stream_host_buffer_detach(
+	struct hpi_hsubsys *hS,
+	u32  h_stream
+)
+{
+	struct hpi_message hm;
+	struct hpi_response hr;
+	unsigned int obj = hpi_handle_object(h_stream);
+
+	if (!h_stream)
+		return HPI_ERROR_INVALID_OBJ;
+
+	hpi_init_message_response(&hm, &hr,  obj,
+			obj == HPI_OBJ_OSTREAM ?
+				HPI_OSTREAM_HOSTBUFFER_FREE :
+				HPI_ISTREAM_HOSTBUFFER_FREE);
+
+	hpi_handle_to_indexes(h_stream, &hm.adapter_index,
+				&hm.obj_index);
+	hm.u.d.u.buffer.command = HPI_BUFFER_CMD_INTERNAL_REVOKEADAPTER;
+	hpi_send_recv(&hm, &hr);
+	return hr.error;
+}
+
+static inline u16 hpi_stream_start(struct hpi_hsubsys *hS, u32 h_stream)
+{
+	if (hpi_handle_object(h_stream) ==  HPI_OBJ_OSTREAM)
+		return hpi_outstream_start(hS, h_stream);
+	else
+		return hpi_instream_start(hS, h_stream);
+}
+
+static inline u16 hpi_stream_stop(struct hpi_hsubsys *hS, u32 h_stream)
+{
+	if (hpi_handle_object(h_stream) ==  HPI_OBJ_OSTREAM)
+		return hpi_outstream_stop(hS, h_stream);
+	else
+		return hpi_instream_stop(hS, h_stream);
+}
+
+static inline u16 hpi_stream_get_info_ex(
+    struct hpi_hsubsys *hS,
+    u32 h_stream,
+    u16        *pw_state,
+    u32        *pbuffer_size,
+    u32        *pdata_in_buffer,
+    u32        *psample_count,
+    u32        *pauxiliary_data
+)
+{
+	if (hpi_handle_object(h_stream)  ==  HPI_OBJ_OSTREAM)
+		return hpi_outstream_get_info_ex(hS, h_stream, pw_state,
+					pbuffer_size, pdata_in_buffer,
+					psample_count, pauxiliary_data);
+	else
+		return hpi_instream_get_info_ex(hS, h_stream, pw_state,
+					pbuffer_size, pdata_in_buffer,
+					psample_count, pauxiliary_data);
+}
+
+static inline u16 hpi_stream_group_add(struct hpi_hsubsys *hS,
+					u32 h_master,
+					u32 h_stream)
+{
+	if (hpi_handle_object(h_master) ==  HPI_OBJ_OSTREAM)
+		return hpi_outstream_group_add(hS, h_master, h_stream);
+	else
+		return hpi_instream_group_add(hS, h_master, h_stream);
+}
+
+static inline u16 hpi_stream_group_reset(struct hpi_hsubsys *hS,
+						u32 h_stream)
+{
+	if (hpi_handle_object(h_stream) ==  HPI_OBJ_OSTREAM)
+		return hpi_outstream_group_reset(hS, h_stream);
+	else
+		return hpi_instream_group_reset(hS, h_stream);
+}
+
+static inline u16 hpi_stream_group_get_map(struct hpi_hsubsys *hS,
+				u32 h_stream, u32 *mo, u32 *mi)
+{
+	if (hpi_handle_object(h_stream) ==  HPI_OBJ_OSTREAM)
+		return hpi_outstream_group_get_map(hS, h_stream, mo, mi);
+	else
+		return hpi_instream_group_get_map(hS, h_stream, mo, mi);
+}
+
+static u16 handle_error(u16 err, int line, char *filename)
+{
+	if (err)
+		printk(KERN_WARNING
+			"in file %s, line %d: HPI error %d\n",
+			filename, line, err);
+	return err;
+}
+
+#define hpi_handle_error(x)  handle_error(x, __LINE__, __FILE__)
+
+/***************************** GENERAL PCM ****************/
+#if REALLY_VERBOSE_LOGGING
+static void print_hwparams(struct snd_pcm_hw_params *p)
+{
+	snd_printd("HWPARAMS \n");
+	snd_printd("samplerate %d \n", params_rate(p));
+	snd_printd("channels %d \n", params_channels(p));
+	snd_printd("format %d \n", params_format(p));
+	snd_printd("subformat %d \n", params_subformat(p));
+	snd_printd("buffer bytes %d \n", params_buffer_bytes(p));
+	snd_printd("period bytes %d \n", params_period_bytes(p));
+	snd_printd("access %d \n", params_access(p));
+	snd_printd("period_size %d \n", params_period_size(p));
+	snd_printd("periods %d \n", params_periods(p));
+	snd_printd("buffer_size %d \n", params_buffer_size(p));
+}
+#else
+#define print_hwparams(x)
+#endif
+
+static snd_pcm_format_t hpi_to_alsa_formats[] = {
+	-1,			/* INVALID */
+	SNDRV_PCM_FORMAT_U8,	/* HPI_FORMAT_PCM8_UNSIGNED        1 */
+	SNDRV_PCM_FORMAT_S16,	/* HPI_FORMAT_PCM16_SIGNED         2 */
+	-1,			/* HPI_FORMAT_MPEG_L1              3 */
+	SNDRV_PCM_FORMAT_MPEG,	/* HPI_FORMAT_MPEG_L2              4 */
+	SNDRV_PCM_FORMAT_MPEG,	/* HPI_FORMAT_MPEG_L3              5 */
+	-1,			/* HPI_FORMAT_DOLBY_AC2            6 */
+	-1,			/* HPI_FORMAT_DOLBY_AC3            7 */
+	SNDRV_PCM_FORMAT_S16_BE,/* HPI_FORMAT_PCM16_BIGENDIAN      8 */
+	-1,			/* HPI_FORMAT_AA_TAGIT1_HITS       9 */
+	-1,			/* HPI_FORMAT_AA_TAGIT1_INSERTS   10 */
+	SNDRV_PCM_FORMAT_S32,	/* HPI_FORMAT_PCM32_SIGNED        11 */
+	-1,			/* HPI_FORMAT_RAW_BITSTREAM       12 */
+	-1,			/* HPI_FORMAT_AA_TAGIT1_HITS_EX1  13 */
+	SNDRV_PCM_FORMAT_FLOAT,	/* HPI_FORMAT_PCM32_FLOAT         14 */
+#if 1
+	/* ALSA can't handle 3 byte sample size together with power-of-2
+	 *  constraint on buffer_bytes, so disable this format
+	 */
+	-1
+#else
+	/* SNDRV_PCM_FORMAT_S24_3LE */	/* { HPI_FORMAT_PCM24_SIGNED        15 */
+#endif
+};
+
+
+static int snd_card_asihpi_format_alsa2hpi(snd_pcm_format_t alsa_format,
+					   u16 *hpi_format)
+{
+	u16 format;
+
+	for (format = HPI_FORMAT_PCM8_UNSIGNED;
+	     format <= HPI_FORMAT_PCM24_SIGNED; format++) {
+		if (hpi_to_alsa_formats[format] == alsa_format) {
+			*hpi_format = format;
+			return 0;
+		}
+	}
+
+	snd_printd(KERN_WARNING "failed match for alsa format %d\n",
+		   alsa_format);
+	*hpi_format = 0;
+	return -EINVAL;
+}
+
+static void snd_card_asihpi_pcm_samplerates(struct snd_card_asihpi *asihpi,
+					 struct snd_pcm_hardware *pcmhw)
+{
+	u16 err;
+	u32 h_control;
+	u32 sample_rate;
+	int idx;
+	unsigned int rate_min = 200000;
+	unsigned int rate_max = 0;
+	unsigned int rates = 0;
+
+	if (asihpi->support_mrx) {
+		rates |= SNDRV_PCM_RATE_CONTINUOUS;
+		rates |= SNDRV_PCM_RATE_8000_96000;
+		rate_min = 8000;
+		rate_max = 100000;
+	} else {
+		/* on cards without SRC,
+		   valid rates are determined by sampleclock */
+		err = hpi_mixer_get_control(ss, asihpi->h_mixer,
+					  HPI_SOURCENODE_CLOCK_SOURCE, 0, 0, 0,
+					  HPI_CONTROL_SAMPLECLOCK, &h_control);
+		if (err) {
+			snd_printk(KERN_ERR
+				"no local sampleclock, err %d\n", err);
+		}
+
+		for (idx = 0; idx < 100; idx++) {
+			if (hpi_sample_clock_query_local_rate(ss,
+				h_control, idx, &sample_rate)) {
+				if (!idx)
+					snd_printk(KERN_ERR
+						"local rate query failed\n");
+
+				break;
+			}
+
+			rate_min = min(rate_min, sample_rate);
+			rate_max = max(rate_max, sample_rate);
+
+			switch (sample_rate) {
+			case 5512:
+				rates |= SNDRV_PCM_RATE_5512;
+				break;
+			case 8000:
+				rates |= SNDRV_PCM_RATE_8000;
+				break;
+			case 11025:
+				rates |= SNDRV_PCM_RATE_11025;
+				break;
+			case 16000:
+				rates |= SNDRV_PCM_RATE_16000;
+				break;
+			case 22050:
+				rates |= SNDRV_PCM_RATE_22050;
+				break;
+			case 32000:
+				rates |= SNDRV_PCM_RATE_32000;
+				break;
+			case 44100:
+				rates |= SNDRV_PCM_RATE_44100;
+				break;
+			case 48000:
+				rates |= SNDRV_PCM_RATE_48000;
+				break;
+			case 64000:
+				rates |= SNDRV_PCM_RATE_64000;
+				break;
+			case 88200:
+				rates |= SNDRV_PCM_RATE_88200;
+				break;
+			case 96000:
+				rates |= SNDRV_PCM_RATE_96000;
+				break;
+			case 176400:
+				rates |= SNDRV_PCM_RATE_176400;
+				break;
+			case 192000:
+				rates |= SNDRV_PCM_RATE_192000;
+				break;
+			default: /* some other rate */
+				rates |= SNDRV_PCM_RATE_KNOT;
+			}
+		}
+	}
+
+	/* printk(KERN_INFO "Supported rates %X %d %d\n",
+	   rates, rate_min, rate_max); */
+	pcmhw->rates = rates;
+	pcmhw->rate_min = rate_min;
+	pcmhw->rate_max = rate_max;
+}
+
+static int snd_card_asihpi_pcm_hw_params(struct snd_pcm_substream *substream,
+					 struct snd_pcm_hw_params *params)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
+	struct snd_card_asihpi *card = snd_pcm_substream_chip(substream);
+	int err;
+	u16 format;
+	unsigned int bytes_per_sec;
+
+	print_hwparams(params);
+	err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
+	if (err < 0)
+		return err;
+	err = snd_card_asihpi_format_alsa2hpi(params_format(params), &format);
+	if (err)
+		return err;
+
+	VPRINTK1(KERN_INFO "format %d, %d chans, %d_hz\n",
+				format, params_channels(params),
+				params_rate(params));
+
+	hpi_handle_error(hpi_format_create(&dpcm->format,
+			params_channels(params),
+			format, params_rate(params), 0, 0));
+
+	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
+		if (hpi_instream_reset(ss, dpcm->h_stream) != 0)
+			return -EINVAL;
+
+		if (hpi_instream_set_format(ss,
+			dpcm->h_stream, &dpcm->format) != 0)
+			return -EINVAL;
+	}
+
+	dpcm->hpi_buffer_attached = 0;
+	if (card->support_mmap) {
+
+		err = hpi_stream_host_buffer_attach(ss, dpcm->h_stream,
+			params_buffer_bytes(params),  runtime->dma_addr);
+		if (err == 0) {
+			snd_printd(KERN_INFO
+				"stream_host_buffer_attach succeeded %u %lu\n",
+				params_buffer_bytes(params),
+				(unsigned long)runtime->dma_addr);
+		} else {
+			snd_printd(KERN_INFO
+					"stream_host_buffer_attach error %d\n",
+					err);
+			return -ENOMEM;
+		}
+
+		err = hpi_stream_get_info_ex(ss, dpcm->h_stream, NULL,
+						&dpcm->hpi_buffer_attached,
+						NULL, NULL, NULL);
+
+		snd_printd(KERN_INFO "stream_host_buffer_attach status 0x%x\n",
+				dpcm->hpi_buffer_attached);
+	}
+	bytes_per_sec = params_rate(params) * params_channels(params);
+	bytes_per_sec *= snd_pcm_format_width(params_format(params));
+	bytes_per_sec /= 8;
+	if (bytes_per_sec <= 0)
+		return -EINVAL;
+
+	dpcm->bytes_per_sec = bytes_per_sec;
+	dpcm->pcm_size = params_buffer_bytes(params);
+	dpcm->pcm_count = params_period_bytes(params);
+	snd_printd(KERN_INFO "pcm_size=%d, pcm_count=%d, bps=%d\n",
+			dpcm->pcm_size, dpcm->pcm_count, bytes_per_sec);
+
+	dpcm->pcm_irq_pos = 0;
+	dpcm->pcm_buf_pos = 0;
+	return 0;
+}
+
+static void snd_card_asihpi_pcm_timer_start(struct snd_pcm_substream *
+					    substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
+	int expiry;
+
+	expiry = (dpcm->pcm_count * HZ / dpcm->bytes_per_sec);
+	/* wait longer the first time, for samples to propagate */
+	expiry = max(expiry, 20);
+	dpcm->timer.expires = jiffies + expiry;
+	dpcm->respawn_timer = 1;
+	add_timer(&dpcm->timer);
+}
+
+static void snd_card_asihpi_pcm_timer_stop(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
+
+	dpcm->respawn_timer = 0;
+	del_timer(&dpcm->timer);
+}
+
+static int snd_card_asihpi_trigger(struct snd_pcm_substream *substream,
+					   int cmd)
+{
+	struct snd_card_asihpi_pcm *dpcm = substream->runtime->private_data;
+	struct snd_card_asihpi *card = snd_pcm_substream_chip(substream);
+	struct snd_pcm_substream *s;
+	u16 e;
+
+	snd_printd("trigger %dstream %d\n",
+			substream->stream, substream->number);
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+		snd_pcm_group_for_each_entry(s, substream) {
+			struct snd_card_asihpi_pcm *ds;
+			ds = s->runtime->private_data;
+
+			if (snd_pcm_substream_chip(s) != card)
+				continue;
+
+			if ((s->stream == SNDRV_PCM_STREAM_PLAYBACK) &&
+				(card->support_mmap)) {
+				/* How do I know how much valid data is present
+				* in buffer? Just guessing 2 periods, but if
+				* buffer is bigger it may contain even more
+				* data??
+				*/
+				unsigned int preload = ds->pcm_count * 2;
+				VPRINTK2("preload %d\n", preload);
+				hpi_handle_error(hpi_outstream_write_buf(
+						ss, ds->h_stream,
+						&s->runtime->dma_area[0],
+						preload,
+						&ds->format));
+			}
+
+			if (card->support_grouping) {
+				VPRINTK1("\t_group %dstream %d\n", s->stream,
+						s->number);
+				e = hpi_stream_group_add(ss,
+					dpcm->h_stream,
+					ds->h_stream);
+				if (!e) {
+					snd_pcm_trigger_done(s, substream);
+				} else {
+					hpi_handle_error(e);
+					break;
+				}
+			} else
+				break;
+		}
+		snd_printd("start\n");
+		/* start the master stream */
+		snd_card_asihpi_pcm_timer_start(substream);
+		hpi_handle_error(hpi_stream_start(ss, dpcm->h_stream));
+		break;
+
+	case SNDRV_PCM_TRIGGER_STOP:
+		snd_card_asihpi_pcm_timer_stop(substream);
+		snd_pcm_group_for_each_entry(s, substream) {
+			if (snd_pcm_substream_chip(s) != card)
+				continue;
+
+			/*? workaround linked streams don't
+			transition to SETUP 20070706*/
+			s->runtime->status->state = SNDRV_PCM_STATE_SETUP;
+
+			if (card->support_grouping) {
+				VPRINTK1("\t_group %dstream %d\n", s->stream,
+					s->number);
+				snd_pcm_trigger_done(s, substream);
+			} else
+				break;
+		}
+		snd_printd("stop\n");
+
+		/* _prepare and _hwparams reset the stream */
+		hpi_handle_error(hpi_stream_stop(ss, dpcm->h_stream));
+		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+			hpi_handle_error(
+				hpi_outstream_reset(ss, dpcm->h_stream));
+
+		if (card->support_grouping)
+			hpi_handle_error(hpi_stream_group_reset(ss,
+						dpcm->h_stream));
+		break;
+
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		snd_printd("pause release\n");
+		hpi_handle_error(hpi_stream_start(ss, dpcm->h_stream));
+		snd_card_asihpi_pcm_timer_start(substream);
+		break;
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		snd_printd("pause\n");
+		snd_card_asihpi_pcm_timer_stop(substream);
+		hpi_handle_error(hpi_stream_stop(ss, dpcm->h_stream));
+		break;
+	default:
+		snd_printd("\tINVALID\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int
+snd_card_asihpi_hw_free(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
+	if (dpcm->hpi_buffer_attached)
+		hpi_stream_host_buffer_detach(ss, dpcm->h_stream);
+
+	snd_pcm_lib_free_pages(substream);
+	return 0;
+}
+
+static void snd_card_asihpi_runtime_free(struct snd_pcm_runtime *runtime)
+{
+	struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
+	kfree(dpcm);
+}
+
+/*algorithm outline
+ Without linking degenerates to getting single stream pos etc
+ Without mmap 2nd loop degenerates to snd_pcm_period_elapsed
+*/
+/*
+buf_pos=get_buf_pos(s);
+for_each_linked_stream(s) {
+	buf_pos=get_buf_pos(s);
+	min_buf_pos = modulo_min(min_buf_pos, buf_pos, pcm_size)
+	new_data = min(new_data, calc_new_data(buf_pos,irq_pos)
+}
+timer.expires = jiffies + predict_next_period_ready(min_buf_pos);
+for_each_linked_stream(s) {
+	s->buf_pos = min_buf_pos;
+	if (new_data > pcm_count) {
+		if (mmap) {
+			irq_pos = (irq_pos + pcm_count) % pcm_size;
+			if (playback) {
+				write(pcm_count);
+			} else {
+				read(pcm_count);
+			}
+		}
+		snd_pcm_period_elapsed(s);
+	}
+}
+*/
+
+/** Minimum of 2 modulo values.  Works correctly when the difference between
+* the values is less than half the modulus
+*/
+static inline unsigned int modulo_min(unsigned int a, unsigned int b,
+					unsigned long int modulus)
+{
+	unsigned int result;
+	if (((a-b) % modulus) < (modulus/2))
+		result = b;
+	else
+		result = a;
+
+	return result;
+}
+
+/** Timer function, equivalent to interrupt service routine for cards
+*/
+static void snd_card_asihpi_timer_function(unsigned long data)
+{
+	struct snd_card_asihpi_pcm *dpcm = (struct snd_card_asihpi_pcm *)data;
+	struct snd_card_asihpi *card = snd_pcm_substream_chip(dpcm->substream);
+	struct snd_pcm_runtime *runtime;
+	struct snd_pcm_substream *s;
+	unsigned int newdata = 0;
+	unsigned int buf_pos, min_buf_pos = 0;
+	unsigned int remdata, xfercount, next_jiffies;
+	int first = 1;
+	u16 state;
+	u32 buffer_size, data_avail, samples_played, aux;
+
+	/* find minimum newdata and buffer pos in group */
+	snd_pcm_group_for_each_entry(s, dpcm->substream) {
+		struct snd_card_asihpi_pcm *ds = s->runtime->private_data;
+		runtime = s->runtime;
+
+		if (snd_pcm_substream_chip(s) != card)
+			continue;
+
+		hpi_handle_error(hpi_stream_get_info_ex(ss,
+					ds->h_stream, &state,
+					&buffer_size, &data_avail,
+					&samples_played, &aux));
+
+		/* number of bytes in on-card buffer */
+		runtime->delay = aux;
+
+		if (state == HPI_STATE_DRAINED) {
+			snd_printd(KERN_WARNING  "outstream %d drained\n",
+					s->number);
+			snd_pcm_stop(s, SNDRV_PCM_STATE_XRUN);
+			return;
+		}
+
+		if (s->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+			buf_pos = frames_to_bytes(runtime, samples_played);
+		} else {
+			buf_pos = data_avail + ds->pcm_irq_pos;
+		}
+
+		if (first) {
+			/* can't statically init min when wrap is involved */
+			min_buf_pos = buf_pos;
+			newdata = (buf_pos - ds->pcm_irq_pos) % ds->pcm_size;
+			first = 0;
+		} else {
+			min_buf_pos =
+				modulo_min(min_buf_pos, buf_pos, UINT_MAX+1L);
+			newdata = min(
+				(buf_pos - ds->pcm_irq_pos) % ds->pcm_size,
+				newdata);
+		}
+
+		VPRINTK1("PB timer hw_ptr x%04lX, appl_ptr x%04lX\n",
+			(unsigned long)frames_to_bytes(runtime,
+						runtime->status->hw_ptr),
+			(unsigned long)frames_to_bytes(runtime,
+						runtime->control->appl_ptr));
+		VPRINTK1("%d S=%d, irq=%04X, pos=x%04X, left=x%04X,"
+			" aux=x%04X space=x%04X\n", s->number,
+			state,	ds->pcm_irq_pos, buf_pos, (int)data_avail,
+			(int)aux, buffer_size-data_avail);
+	}
+
+	remdata = newdata % dpcm->pcm_count;
+	xfercount = newdata - remdata; /* a multiple of pcm_count */
+	next_jiffies = ((dpcm->pcm_count-remdata) * HZ / dpcm->bytes_per_sec)+1;
+	next_jiffies = max(next_jiffies, 2U * HZ / 1000U);
+	dpcm->timer.expires = jiffies + next_jiffies;
+	VPRINTK1("jif %d buf pos x%04X newdata x%04X xc x%04X\n",
+			next_jiffies, min_buf_pos, newdata, xfercount);
+
+	snd_pcm_group_for_each_entry(s, dpcm->substream) {
+		struct snd_card_asihpi_pcm *ds = s->runtime->private_data;
+		ds->pcm_buf_pos = min_buf_pos;
+
+		if (xfercount) {
+			if (card->support_mmap) {
+				ds->pcm_irq_pos = ds->pcm_irq_pos + xfercount;
+				if (s->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+					VPRINTK2("write OS%d x%04x\n",
+							s->number,
+							ds->pcm_count);
+					hpi_handle_error(
+						hpi_outstream_write_buf(
+							ss, ds->h_stream,
+							&s->runtime->
+								dma_area[0],
+							xfercount,
+							&ds->format));
+				} else {
+					VPRINTK2("read IS%d x%04x\n",
+						s->number,
+						dpcm->pcm_count);
+					hpi_handle_error(
+						hpi_instream_read_buf(
+							ss, ds->h_stream,
+							NULL, xfercount));
+				}
+			} /* else R/W will be handled by read/write callbacks */
+			snd_pcm_period_elapsed(s);
+		}
+	}
+
+	if (dpcm->respawn_timer)
+		add_timer(&dpcm->timer);
+}
+
+/***************************** PLAYBACK OPS ****************/
+static int snd_card_asihpi_playback_ioctl(struct snd_pcm_substream *substream,
+					  unsigned int cmd, void *arg)
+{
+	/* snd_printd(KERN_INFO "Playback ioctl %d\n", cmd); */
+	return snd_pcm_lib_ioctl(substream, cmd, arg);
+}
+
+static int snd_card_asihpi_playback_prepare(struct snd_pcm_substream *
+					    substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
+
+	snd_printd(KERN_INFO "playback prepare %d\n", substream->number);
+
+	hpi_handle_error(hpi_outstream_reset(ss, dpcm->h_stream));
+	dpcm->pcm_irq_pos = 0;
+	dpcm->pcm_buf_pos = 0;
+
+	return 0;
+}
+
+static snd_pcm_uframes_t
+snd_card_asihpi_playback_pointer(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
+	snd_pcm_uframes_t ptr;
+
+	u32 samples_played;
+	u16 err;
+
+	if (!snd_pcm_stream_linked(substream)) {
+		/* NOTE, can use samples played for playback position here and
+		* in timer fn because it LAGS the actual read pointer, and is a
+		* better representation of actual playout position
+		*/
+		err = hpi_outstream_get_info_ex(ss, dpcm->h_stream, NULL,
+					NULL, NULL,
+					&samples_played, NULL);
+		hpi_handle_error(err);
+
+		dpcm->pcm_buf_pos = frames_to_bytes(runtime, samples_played);
+	}
+	/* else must return most conservative value found in timer func
+	 * by looping over all streams
+	 */
+
+	ptr = bytes_to_frames(runtime, dpcm->pcm_buf_pos  % dpcm->pcm_size);
+	VPRINTK2("playback_pointer=%04ld\n", (unsigned long)ptr);
+	return ptr;
+}
+
+static void snd_card_asihpi_playback_format(struct snd_card_asihpi *asihpi,
+						u32 h_stream,
+						struct snd_pcm_hardware *pcmhw)
+{
+	struct hpi_format hpi_format;
+	u16 format;
+	u16 err;
+	u32 h_control;
+	u32 sample_rate = 48000;
+
+	/* on cards without SRC, must query at valid rate,
+	* maybe set by external sync
+	*/
+	err = hpi_mixer_get_control(ss, asihpi->h_mixer,
+				  HPI_SOURCENODE_CLOCK_SOURCE, 0, 0, 0,
+				  HPI_CONTROL_SAMPLECLOCK, &h_control);
+
+	if (!err)
+		err = hpi_sample_clock_get_sample_rate(ss, h_control,
+				&sample_rate);
+
+	for (format = HPI_FORMAT_PCM8_UNSIGNED;
+	     format <= HPI_FORMAT_PCM24_SIGNED; format++) {
+		err = hpi_format_create(&hpi_format,
+					2, format, sample_rate, 128000, 0);
+		if (!err)
+			err = hpi_outstream_query_format(ss, h_stream,
+							&hpi_format);
+		if (!err && (hpi_to_alsa_formats[format] != -1))
+			pcmhw->formats |=
+				(1ULL << hpi_to_alsa_formats[format]);
+	}
+}
+
+static struct snd_pcm_hardware snd_card_asihpi_playback = {
+	.channels_min = 1,
+	.channels_max = 2,
+	.buffer_bytes_max = BUFFER_BYTES_MAX,
+	.period_bytes_min = PERIOD_BYTES_MIN,
+	.period_bytes_max = BUFFER_BYTES_MAX / PERIODS_MIN,
+	.periods_min = PERIODS_MIN,
+	.periods_max = BUFFER_BYTES_MAX / PERIOD_BYTES_MIN,
+	.fifo_size = 0,
+};
+
+static int snd_card_asihpi_playback_open(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_card_asihpi_pcm *dpcm;
+	struct snd_card_asihpi *card = snd_pcm_substream_chip(substream);
+	int err;
+
+	dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL);
+	if (dpcm == NULL)
+		return -ENOMEM;
+
+	err =
+	    hpi_outstream_open(ss, card->adapter_index,
+			      substream->number, &dpcm->h_stream);
+	hpi_handle_error(err);
+	if (err)
+		kfree(dpcm);
+	if (err == HPI_ERROR_OBJ_ALREADY_OPEN)
+		return -EBUSY;
+	if (err)
+		return -EIO;
+
+	/*? also check ASI5000 samplerate source
+	    If external, only support external rate.
+	    If internal and other stream playing, cant switch
+	*/
+
+	init_timer(&dpcm->timer);
+	dpcm->timer.data = (unsigned long) dpcm;
+	dpcm->timer.function = snd_card_asihpi_timer_function;
+	dpcm->substream = substream;
+	runtime->private_data = dpcm;
+	runtime->private_free = snd_card_asihpi_runtime_free;
+
+	snd_card_asihpi_playback.channels_max = card->out_max_chans;
+	/*?snd_card_asihpi_playback.period_bytes_min =
+	card->out_max_chans * 4096; */
+
+	snd_card_asihpi_playback_format(card, dpcm->h_stream,
+					&snd_card_asihpi_playback);
+
+	snd_card_asihpi_pcm_samplerates(card,  &snd_card_asihpi_playback);
+
+	snd_card_asihpi_playback.info = SNDRV_PCM_INFO_INTERLEAVED |
+					SNDRV_PCM_INFO_DOUBLE |
+					SNDRV_PCM_INFO_BATCH |
+					SNDRV_PCM_INFO_BLOCK_TRANSFER |
+					SNDRV_PCM_INFO_PAUSE;
+
+	if (card->support_mmap)
+		snd_card_asihpi_playback.info |= SNDRV_PCM_INFO_MMAP |
+						SNDRV_PCM_INFO_MMAP_VALID;
+
+	if (card->support_grouping)
+		snd_card_asihpi_playback.info |= SNDRV_PCM_INFO_SYNC_START;
+
+	/* struct is copied, so can create initializer dynamically */
+	runtime->hw = snd_card_asihpi_playback;
+
+	if (card->support_mmap)
+		err = snd_pcm_hw_constraint_pow2(runtime, 0,
+					SNDRV_PCM_HW_PARAM_BUFFER_BYTES);
+	if (err < 0)
+		return err;
+
+	snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
+		card->update_interval_frames);
+	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
+		card->update_interval_frames * 4, UINT_MAX);
+
+	snd_pcm_set_sync(substream);
+
+	snd_printd(KERN_INFO "playback open\n");
+
+	return 0;
+}
+
+static int snd_card_asihpi_playback_close(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
+
+	hpi_handle_error(hpi_outstream_close(ss, dpcm->h_stream));
+	snd_printd(KERN_INFO "playback close\n");
+
+	return 0;
+}
+
+static int snd_card_asihpi_playback_copy(struct snd_pcm_substream *substream,
+					int channel,
+					snd_pcm_uframes_t pos,
+					void __user *src,
+					snd_pcm_uframes_t count)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
+	unsigned int len;
+
+	len = frames_to_bytes(runtime, count);
+
+	if (copy_from_user(runtime->dma_area, src, len))
+		return -EFAULT;
+
+	VPRINTK2(KERN_DEBUG "playback copy%d %u bytes\n",
+			substream->number, len);
+
+	hpi_handle_error(hpi_outstream_write_buf(ss, dpcm->h_stream,
+				runtime->dma_area, len, &dpcm->format));
+
+	return 0;
+}
+
+static int snd_card_asihpi_playback_silence(struct snd_pcm_substream *
+					    substream, int channel,
+					    snd_pcm_uframes_t pos,
+					    snd_pcm_uframes_t count)
+{
+	unsigned int len;
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
+
+	len = frames_to_bytes(runtime, count);
+	snd_printd(KERN_INFO "playback silence  %u bytes\n", len);
+
+	memset(runtime->dma_area, 0, len);
+	hpi_handle_error(hpi_outstream_write_buf(ss, dpcm->h_stream,
+				runtime->dma_area, len, &dpcm->format));
+	return 0;
+}
+
+static struct snd_pcm_ops snd_card_asihpi_playback_ops = {
+	.open = snd_card_asihpi_playback_open,
+	.close = snd_card_asihpi_playback_close,
+	.ioctl = snd_card_asihpi_playback_ioctl,
+	.hw_params = snd_card_asihpi_pcm_hw_params,
+	.hw_free = snd_card_asihpi_hw_free,
+	.prepare = snd_card_asihpi_playback_prepare,
+	.trigger = snd_card_asihpi_trigger,
+	.pointer = snd_card_asihpi_playback_pointer,
+	.copy = snd_card_asihpi_playback_copy,
+	.silence = snd_card_asihpi_playback_silence,
+};
+
+static struct snd_pcm_ops snd_card_asihpi_playback_mmap_ops = {
+	.open = snd_card_asihpi_playback_open,
+	.close = snd_card_asihpi_playback_close,
+	.ioctl = snd_card_asihpi_playback_ioctl,
+	.hw_params = snd_card_asihpi_pcm_hw_params,
+	.hw_free = snd_card_asihpi_hw_free,
+	.prepare = snd_card_asihpi_playback_prepare,
+	.trigger = snd_card_asihpi_trigger,
+	.pointer = snd_card_asihpi_playback_pointer,
+};
+
+/***************************** CAPTURE OPS ****************/
+static snd_pcm_uframes_t
+snd_card_asihpi_capture_pointer(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
+
+	VPRINTK2("capture pointer %d=%d\n",
+			substream->number, dpcm->pcm_buf_pos);
+	/* NOTE Unlike playback can't use actual dwSamplesPlayed
+		for the capture position, because those samples aren't yet in
+		the local buffer available for reading.
+	*/
+	return bytes_to_frames(runtime, dpcm->pcm_buf_pos % dpcm->pcm_size);
+}
+
+static int snd_card_asihpi_capture_ioctl(struct snd_pcm_substream *substream,
+					 unsigned int cmd, void *arg)
+{
+	return snd_pcm_lib_ioctl(substream, cmd, arg);
+}
+
+static int snd_card_asihpi_capture_prepare(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
+
+	hpi_handle_error(hpi_instream_reset(ss, dpcm->h_stream));
+	dpcm->pcm_irq_pos = 0;
+	dpcm->pcm_buf_pos = 0;
+
+	snd_printd("capture prepare %d\n", substream->number);
+	return 0;
+}
+
+
+
+static void snd_card_asihpi_capture_format(struct snd_card_asihpi *asihpi,
+					u32 h_stream,
+					 struct snd_pcm_hardware *pcmhw)
+{
+  struct hpi_format hpi_format;
+	u16 format;
+	u16 err;
+	u32 h_control;
+	u32 sample_rate = 48000;
+
+	/* on cards without SRC, must query at valid rate,
+		maybe set by external sync */
+	err = hpi_mixer_get_control(ss, asihpi->h_mixer,
+				  HPI_SOURCENODE_CLOCK_SOURCE, 0, 0, 0,
+				  HPI_CONTROL_SAMPLECLOCK, &h_control);
+
+	if (!err)
+		err = hpi_sample_clock_get_sample_rate(ss, h_control,
+			&sample_rate);
+
+	for (format = HPI_FORMAT_PCM8_UNSIGNED;
+		format <= HPI_FORMAT_PCM24_SIGNED; format++) {
+
+		err = hpi_format_create(&hpi_format, 2, format,
+				sample_rate, 128000, 0);
+		if (!err)
+			err = hpi_instream_query_format(ss, h_stream,
+					    &hpi_format);
+		if (!err)
+			pcmhw->formats |=
+				(1ULL << hpi_to_alsa_formats[format]);
+	}
+}
+
+
+static struct snd_pcm_hardware snd_card_asihpi_capture = {
+	.channels_min = 1,
+	.channels_max = 2,
+	.buffer_bytes_max = BUFFER_BYTES_MAX,
+	.period_bytes_min = PERIOD_BYTES_MIN,
+	.period_bytes_max = BUFFER_BYTES_MAX / PERIODS_MIN,
+	.periods_min = PERIODS_MIN,
+	.periods_max = BUFFER_BYTES_MAX / PERIOD_BYTES_MIN,
+	.fifo_size = 0,
+};
+
+static int snd_card_asihpi_capture_open(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_card_asihpi *card = snd_pcm_substream_chip(substream);
+	struct snd_card_asihpi_pcm *dpcm;
+	int err;
+
+	dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL);
+	if (dpcm == NULL)
+		return -ENOMEM;
+
+	snd_printd("hpi_instream_open adapter %d stream %d\n",
+		   card->adapter_index, substream->number);
+
+	err = hpi_handle_error(
+	    hpi_instream_open(ss, card->adapter_index,
+			     substream->number, &dpcm->h_stream));
+	if (err)
+		kfree(dpcm);
+	if (err == HPI_ERROR_OBJ_ALREADY_OPEN)
+		return -EBUSY;
+	if (err)
+		return -EIO;
+
+
+	init_timer(&dpcm->timer);
+	dpcm->timer.data = (unsigned long) dpcm;
+	dpcm->timer.function = snd_card_asihpi_timer_function;
+	dpcm->substream = substream;
+	runtime->private_data = dpcm;
+	runtime->private_free = snd_card_asihpi_runtime_free;
+
+	snd_card_asihpi_capture.channels_max = card->in_max_chans;
+	snd_card_asihpi_capture_format(card, dpcm->h_stream,
+				       &snd_card_asihpi_capture);
+	snd_card_asihpi_pcm_samplerates(card,  &snd_card_asihpi_capture);
+	snd_card_asihpi_capture.info = SNDRV_PCM_INFO_INTERLEAVED;
+
+	if (card->support_mmap)
+		snd_card_asihpi_capture.info |= SNDRV_PCM_INFO_MMAP |
+						SNDRV_PCM_INFO_MMAP_VALID;
+
+	runtime->hw = snd_card_asihpi_capture;
+
+	if (card->support_mmap)
+		err = snd_pcm_hw_constraint_pow2(runtime, 0,
+					SNDRV_PCM_HW_PARAM_BUFFER_BYTES);
+	if (err < 0)
+		return err;
+
+	snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
+		card->update_interval_frames);
+	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
+		card->update_interval_frames * 2, UINT_MAX);
+
+	snd_pcm_set_sync(substream);
+
+	return 0;
+}
+
+static int snd_card_asihpi_capture_close(struct snd_pcm_substream *substream)
+{
+	struct snd_card_asihpi_pcm *dpcm = substream->runtime->private_data;
+
+	hpi_handle_error(hpi_instream_close(ss, dpcm->h_stream));
+	return 0;
+}
+
+static int snd_card_asihpi_capture_copy(struct snd_pcm_substream *substream,
+				int channel, snd_pcm_uframes_t pos,
+				void __user *dst, snd_pcm_uframes_t count)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
+	u32 data_size;
+
+	data_size = frames_to_bytes(runtime, count);
+
+	VPRINTK2("capture copy%d %d bytes\n", substream->number, data_size);
+	hpi_handle_error(hpi_instream_read_buf(ss, dpcm->h_stream,
+				runtime->dma_area, data_size));
+
+	/* Used by capture_pointer */
+	dpcm->pcm_irq_pos = dpcm->pcm_irq_pos + data_size;
+
+	if (copy_to_user(dst, runtime->dma_area, data_size))
+		return -EFAULT;
+
+	return 0;
+}
+
+static struct snd_pcm_ops snd_card_asihpi_capture_mmap_ops = {
+	.open = snd_card_asihpi_capture_open,
+	.close = snd_card_asihpi_capture_close,
+	.ioctl = snd_card_asihpi_capture_ioctl,
+	.hw_params = snd_card_asihpi_pcm_hw_params,
+	.hw_free = snd_card_asihpi_hw_free,
+	.prepare = snd_card_asihpi_capture_prepare,
+	.trigger = snd_card_asihpi_trigger,
+	.pointer = snd_card_asihpi_capture_pointer,
+};
+
+static struct snd_pcm_ops snd_card_asihpi_capture_ops = {
+	.open = snd_card_asihpi_capture_open,
+	.close = snd_card_asihpi_capture_close,
+	.ioctl = snd_card_asihpi_capture_ioctl,
+	.hw_params = snd_card_asihpi_pcm_hw_params,
+	.hw_free = snd_card_asihpi_hw_free,
+	.prepare = snd_card_asihpi_capture_prepare,
+	.trigger = snd_card_asihpi_trigger,
+	.pointer = snd_card_asihpi_capture_pointer,
+	.copy = snd_card_asihpi_capture_copy
+};
+
+static int __devinit snd_card_asihpi_pcm_new(struct snd_card_asihpi *asihpi,
+				      int device, int substreams)
+{
+	struct snd_pcm *pcm;
+	int err;
+
+	err = snd_pcm_new(asihpi->card, "asihpi PCM", device,
+			 asihpi->num_outstreams, asihpi->num_instreams,
+			 &pcm);
+	if (err < 0)
+		return err;
+	/* pointer to ops struct is stored, dont change ops afterwards! */
+	if (asihpi->support_mmap) {
+		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
+				&snd_card_asihpi_playback_mmap_ops);
+		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
+				&snd_card_asihpi_capture_mmap_ops);
+	} else {
+		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
+				&snd_card_asihpi_playback_ops);
+		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
+				&snd_card_asihpi_capture_ops);
+	}
+
+	pcm->private_data = asihpi;
+	pcm->info_flags = 0;
+	strcpy(pcm->name, "asihpi PCM");
+
+	/*? do we want to emulate MMAP for non-BBM cards?
+	Jack doesn't work with ALSAs MMAP emulation - WHY NOT? */
+	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
+						snd_dma_pci_data(asihpi->pci),
+						64*1024, BUFFER_BYTES_MAX);
+
+	return 0;
+}
+
+/***************************** MIXER CONTROLS ****************/
+struct hpi_control {
+	u32 h_control;
+	u16 control_type;
+	u16 src_node_type;
+	u16 src_node_index;
+	u16 dst_node_type;
+	u16 dst_node_index;
+	u16 band;
+	char name[44]; /* copied to snd_ctl_elem_id.name[44]; */
+};
+
+static char *asihpi_tuner_band_names[] =
+{
+	"invalid",
+	"AM",
+	"FM mono",
+	"TV NTSC-M",
+	"FM stereo",
+	"AUX",
+	"TV PAL BG",
+	"TV PAL I",
+	"TV PAL DK",
+	"TV SECAM",
+};
+
+compile_time_assert(
+	(ARRAY_SIZE(asihpi_tuner_band_names) ==
+		(HPI_TUNER_BAND_LAST+1)),
+	assert_tuner_band_names_size);
+
+#if ASI_STYLE_NAMES
+static char *asihpi_src_names[] =
+{
+	"no source",
+	"outstream",
+	"line_in",
+	"aes_in",
+	"tuner",
+	"RF",
+	"clock",
+	"bitstr",
+	"mic",
+	"cobranet",
+	"analog_in",
+	"adapter",
+};
+#else
+static char *asihpi_src_names[] =
+{
+	"no source",
+	"PCM playback",
+	"line in",
+	"digital in",
+	"tuner",
+	"RF",
+	"clock",
+	"bitstream",
+	"mic",
+	"cobranet in",
+	"analog in",
+	"adapter",
+};
+#endif
+
+compile_time_assert(
+	(ARRAY_SIZE(asihpi_src_names) ==
+		(HPI_SOURCENODE_LAST_INDEX-HPI_SOURCENODE_BASE+1)),
+	assert_src_names_size);
+
+#if ASI_STYLE_NAMES
+static char *asihpi_dst_names[] =
+{
+	"no destination",
+	"instream",
+	"line_out",
+	"aes_out",
+	"RF",
+	"speaker" ,
+	"cobranet",
+	"analog_out",
+};
+#else
+static char *asihpi_dst_names[] =
+{
+	"no destination",
+	"PCM capture",
+	"line out",
+	"digital out",
+	"RF",
+	"speaker",
+	"cobranet out",
+	"analog out"
+};
+#endif
+
+compile_time_assert(
+	(ARRAY_SIZE(asihpi_dst_names) ==
+		(HPI_DESTNODE_LAST_INDEX-HPI_DESTNODE_BASE+1)),
+	assert_dst_names_size);
+
+static inline int ctl_add(struct snd_card *card, struct snd_kcontrol_new *ctl,
+				struct snd_card_asihpi *asihpi)
+{
+	int err;
+
+	err = snd_ctl_add(card, snd_ctl_new1(ctl, asihpi));
+	if (err < 0)
+		return err;
+	else if (mixer_dump)
+		snd_printk(KERN_INFO "added %s(%d)\n", ctl->name, ctl->index);
+
+	return 0;
+}
+
+/* Convert HPI control name and location into ALSA control name */
+static void asihpi_ctl_init(struct snd_kcontrol_new *snd_control,
+				struct hpi_control *hpi_ctl,
+				char *name)
+{
+	memset(snd_control, 0, sizeof(*snd_control));
+	snd_control->name = hpi_ctl->name;
+	snd_control->private_value = hpi_ctl->h_control;
+	snd_control->iface = SNDRV_CTL_ELEM_IFACE_MIXER;
+	snd_control->index = 0;
+
+	if (hpi_ctl->src_node_type && hpi_ctl->dst_node_type)
+		sprintf(hpi_ctl->name, "%s%d to %s%d %s",
+			asihpi_src_names[hpi_ctl->src_node_type],
+			hpi_ctl->src_node_index,
+			asihpi_dst_names[hpi_ctl->dst_node_type],
+			hpi_ctl->dst_node_index,
+			name);
+	else if (hpi_ctl->dst_node_type) {
+		sprintf(hpi_ctl->name, "%s%d %s",
+		asihpi_dst_names[hpi_ctl->dst_node_type],
+		hpi_ctl->dst_node_index,
+		name);
+	} else {
+		sprintf(hpi_ctl->name, "%s%d %s",
+		asihpi_src_names[hpi_ctl->src_node_type],
+		hpi_ctl->src_node_index,
+		name);
+	}
+}
+
+/*------------------------------------------------------------
+   Volume controls
+ ------------------------------------------------------------*/
+#define VOL_STEP_mB 1
+static int snd_asihpi_volume_info(struct snd_kcontrol *kcontrol,
+				  struct snd_ctl_elem_info *uinfo)
+{
+	u32 h_control = kcontrol->private_value;
+	u16 err;
+	/* native gains are in millibels */
+	short min_gain_mB;
+	short max_gain_mB;
+	short step_gain_mB;
+
+	err = hpi_volume_query_range(ss, h_control,
+			&min_gain_mB, &max_gain_mB, &step_gain_mB);
+	if (err) {
+		max_gain_mB = 0;
+		min_gain_mB = -10000;
+		step_gain_mB = VOL_STEP_mB;
+	}
+
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 2;
+	uinfo->value.integer.min = min_gain_mB / VOL_STEP_mB;
+	uinfo->value.integer.max = max_gain_mB / VOL_STEP_mB;
+	uinfo->value.integer.step = step_gain_mB / VOL_STEP_mB;
+	return 0;
+}
+
+static int snd_asihpi_volume_get(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	u32 h_control = kcontrol->private_value;
+	short an_gain_mB[HPI_MAX_CHANNELS];
+
+	hpi_handle_error(hpi_volume_get_gain(ss, h_control, an_gain_mB));
+	ucontrol->value.integer.value[0] = an_gain_mB[0] / VOL_STEP_mB;
+	ucontrol->value.integer.value[1] = an_gain_mB[1] / VOL_STEP_mB;
+
+	return 0;
+}
+
+static int snd_asihpi_volume_put(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	int change;
+	u32 h_control = kcontrol->private_value;
+	short an_gain_mB[HPI_MAX_CHANNELS];
+
+	an_gain_mB[0] =
+	    (ucontrol->value.integer.value[0]) * VOL_STEP_mB;
+	an_gain_mB[1] =
+	    (ucontrol->value.integer.value[1]) * VOL_STEP_mB;
+	/*  change = asihpi->mixer_volume[addr][0] != left ||
+	   asihpi->mixer_volume[addr][1] != right;
+	 */
+	change = 1;
+	hpi_handle_error(hpi_volume_set_gain(ss, h_control, an_gain_mB));
+	return change;
+}
+
+static const DECLARE_TLV_DB_SCALE(db_scale_100, -10000, VOL_STEP_mB, 0);
+
+static int __devinit snd_asihpi_volume_add(struct snd_card_asihpi *asihpi,
+					struct hpi_control *hpi_ctl)
+{
+	struct snd_card *card = asihpi->card;
+	struct snd_kcontrol_new snd_control;
+
+	asihpi_ctl_init(&snd_control, hpi_ctl, "volume");
+	snd_control.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
+				SNDRV_CTL_ELEM_ACCESS_TLV_READ;
+	snd_control.info = snd_asihpi_volume_info;
+	snd_control.get = snd_asihpi_volume_get;
+	snd_control.put = snd_asihpi_volume_put;
+	snd_control.tlv.p = db_scale_100;
+
+	return ctl_add(card, &snd_control, asihpi);
+}
+
+/*------------------------------------------------------------
+   Level controls
+ ------------------------------------------------------------*/
+static int snd_asihpi_level_info(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_info *uinfo)
+{
+	u32 h_control = kcontrol->private_value;
+	u16 err;
+	short min_gain_mB;
+	short max_gain_mB;
+	short step_gain_mB;
+
+	err =
+	    hpi_level_query_range(ss, h_control, &min_gain_mB,
+			       &max_gain_mB, &step_gain_mB);
+	if (err) {
+		max_gain_mB = 2400;
+		min_gain_mB = -1000;
+		step_gain_mB = 100;
+	}
+
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 2;
+	uinfo->value.integer.min = min_gain_mB / HPI_UNITS_PER_dB;
+	uinfo->value.integer.max = max_gain_mB / HPI_UNITS_PER_dB;
+	uinfo->value.integer.step = step_gain_mB / HPI_UNITS_PER_dB;
+	return 0;
+}
+
+static int snd_asihpi_level_get(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_value *ucontrol)
+{
+	u32 h_control = kcontrol->private_value;
+	short an_gain_mB[HPI_MAX_CHANNELS];
+
+	hpi_handle_error(hpi_level_get_gain(ss, h_control, an_gain_mB));
+	ucontrol->value.integer.value[0] =
+	    an_gain_mB[0] / HPI_UNITS_PER_dB;
+	ucontrol->value.integer.value[1] =
+	    an_gain_mB[1] / HPI_UNITS_PER_dB;
+
+	return 0;
+}
+
+static int snd_asihpi_level_put(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_value *ucontrol)
+{
+	int change;
+	u32 h_control = kcontrol->private_value;
+	short an_gain_mB[HPI_MAX_CHANNELS];
+
+	an_gain_mB[0] =
+	    (ucontrol->value.integer.value[0]) * HPI_UNITS_PER_dB;
+	an_gain_mB[1] =
+	    (ucontrol->value.integer.value[1]) * HPI_UNITS_PER_dB;
+	/*  change = asihpi->mixer_level[addr][0] != left ||
+	   asihpi->mixer_level[addr][1] != right;
+	 */
+	change = 1;
+	hpi_handle_error(hpi_level_set_gain(ss, h_control, an_gain_mB));
+	return change;
+}
+
+static const DECLARE_TLV_DB_SCALE(db_scale_level, -1000, 100, 0);
+
+static int __devinit snd_asihpi_level_add(struct snd_card_asihpi *asihpi,
+					struct hpi_control *hpi_ctl)
+{
+	struct snd_card *card = asihpi->card;
+	struct snd_kcontrol_new snd_control;
+
+	/* can't use 'volume' cos some nodes have volume as well */
+	asihpi_ctl_init(&snd_control, hpi_ctl, "level");
+	snd_control.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
+				SNDRV_CTL_ELEM_ACCESS_TLV_READ;
+	snd_control.info = snd_asihpi_level_info;
+	snd_control.get = snd_asihpi_level_get;
+	snd_control.put = snd_asihpi_level_put;
+	snd_control.tlv.p = db_scale_level;
+
+	return ctl_add(card, &snd_control, asihpi);
+}
+
+/*------------------------------------------------------------
+   AESEBU controls
+ ------------------------------------------------------------*/
+
+/* AESEBU format */
+static char *asihpi_aesebu_format_names[] =
+{
+	"N/A",
+	"S/PDIF",
+	"AES/EBU",
+};
+
+static int snd_asihpi_aesebu_format_info(struct snd_kcontrol *kcontrol,
+				  struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+	uinfo->count = 1;
+	uinfo->value.enumerated.items = 3;
+
+	if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
+		uinfo->value.enumerated.item =
+			uinfo->value.enumerated.items - 1;
+
+	strcpy(uinfo->value.enumerated.name,
+		asihpi_aesebu_format_names[uinfo->value.enumerated.item]);
+
+	return 0;
+}
+
+static int snd_asihpi_aesebu_format_get(struct snd_kcontrol *kcontrol,
+			struct snd_ctl_elem_value *ucontrol,
+			u16 (*func)(const struct hpi_hsubsys *, u32, u16 *))
+{
+	u32 h_control = kcontrol->private_value;
+	u16 source, err;
+
+	err = func(ss, h_control, &source);
+
+	/* default to N/A */
+	ucontrol->value.enumerated.item[0] = 0;
+	/* return success but set the control to N/A */
+	if (err)
+		return 0;
+	if (source == HPI_AESEBU_FORMAT_SPDIF)
+		ucontrol->value.enumerated.item[0] = 1;
+	if (source == HPI_AESEBU_FORMAT_AESEBU)
+		ucontrol->value.enumerated.item[0] = 2;
+
+	return 0;
+}
+
+static int snd_asihpi_aesebu_format_put(struct snd_kcontrol *kcontrol,
+			struct snd_ctl_elem_value *ucontrol,
+			 u16 (*func)(const struct hpi_hsubsys *, u32, u16))
+{
+	u32 h_control = kcontrol->private_value;
+
+	/* default to S/PDIF */
+	u16 source = HPI_AESEBU_FORMAT_SPDIF;
+
+	if (ucontrol->value.enumerated.item[0] == 1)
+		source = HPI_AESEBU_FORMAT_SPDIF;
+	if (ucontrol->value.enumerated.item[0] == 2)
+		source = HPI_AESEBU_FORMAT_AESEBU;
+
+	if (func(ss, h_control, source) != 0)
+		return -EINVAL;
+
+	return 1;
+}
+
+static int snd_asihpi_aesebu_rx_format_get(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol) {
+	return snd_asihpi_aesebu_format_get(kcontrol, ucontrol,
+					HPI_AESEBU__receiver_get_format);
+}
+
+static int snd_asihpi_aesebu_rx_format_put(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol) {
+	return snd_asihpi_aesebu_format_put(kcontrol, ucontrol,
+					HPI_AESEBU__receiver_set_format);
+}
+
+static int snd_asihpi_aesebu_rxstatus_info(struct snd_kcontrol *kcontrol,
+				  struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 1;
+
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = 0X1F;
+	uinfo->value.integer.step = 1;
+
+	return 0;
+}
+
+static int snd_asihpi_aesebu_rxstatus_get(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol) {
+
+	u32 h_control = kcontrol->private_value;
+	u16 status;
+
+	hpi_handle_error(HPI_AESEBU__receiver_get_error_status(
+				ss, h_control, &status));
+	ucontrol->value.integer.value[0] = status;
+	return 0;
+}
+
+static int __devinit snd_asihpi_aesebu_rx_add(struct snd_card_asihpi *asihpi,
+					struct hpi_control *hpi_ctl)
+{
+	struct snd_card *card = asihpi->card;
+	struct snd_kcontrol_new snd_control;
+
+	asihpi_ctl_init(&snd_control, hpi_ctl, "format");
+	snd_control.access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
+	snd_control.info = snd_asihpi_aesebu_format_info;
+	snd_control.get = snd_asihpi_aesebu_rx_format_get;
+	snd_control.put = snd_asihpi_aesebu_rx_format_put;
+
+
+	if (ctl_add(card, &snd_control, asihpi) < 0)
+		return -EINVAL;
+
+	asihpi_ctl_init(&snd_control, hpi_ctl, "status");
+	snd_control.access =
+	    SNDRV_CTL_ELEM_ACCESS_VOLATILE | SNDRV_CTL_ELEM_ACCESS_READ;
+	snd_control.info = snd_asihpi_aesebu_rxstatus_info;
+	snd_control.get = snd_asihpi_aesebu_rxstatus_get;
+
+	return ctl_add(card, &snd_control, asihpi);
+}
+
+static int snd_asihpi_aesebu_tx_format_get(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol) {
+	return snd_asihpi_aesebu_format_get(kcontrol, ucontrol,
+					HPI_AESEBU__transmitter_get_format);
+}
+
+static int snd_asihpi_aesebu_tx_format_put(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol) {
+	return snd_asihpi_aesebu_format_put(kcontrol, ucontrol,
+					HPI_AESEBU__transmitter_set_format);
+}
+
+
+static int __devinit snd_asihpi_aesebu_tx_add(struct snd_card_asihpi *asihpi,
+					struct hpi_control *hpi_ctl)
+{
+	struct snd_card *card = asihpi->card;
+	struct snd_kcontrol_new snd_control;
+
+	asihpi_ctl_init(&snd_control, hpi_ctl, "format");
+	snd_control.access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
+	snd_control.info = snd_asihpi_aesebu_format_info;
+	snd_control.get = snd_asihpi_aesebu_tx_format_get;
+	snd_control.put = snd_asihpi_aesebu_tx_format_put;
+
+	return ctl_add(card, &snd_control, asihpi);
+}
+
+/*------------------------------------------------------------
+   Tuner controls
+ ------------------------------------------------------------*/
+
+/* Gain */
+
+static int snd_asihpi_tuner_gain_info(struct snd_kcontrol *kcontrol,
+				  struct snd_ctl_elem_info *uinfo)
+{
+	u32 h_control = kcontrol->private_value;
+	u16 err;
+	short idx;
+	u16 gain_range[3];
+
+	for (idx = 0; idx < 3; idx++) {
+		err = hpi_tuner_query_gain(ss, h_control,
+					  idx, &gain_range[idx]);
+		if (err != 0)
+			return err;
+	}
+
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 1;
+	uinfo->value.integer.min = ((int)gain_range[0]) / HPI_UNITS_PER_dB;
+	uinfo->value.integer.max = ((int)gain_range[1]) / HPI_UNITS_PER_dB;
+	uinfo->value.integer.step = ((int) gain_range[2]) / HPI_UNITS_PER_dB;
+	return 0;
+}
+
+static int snd_asihpi_tuner_gain_get(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	/*
+	struct snd_card_asihpi *asihpi = snd_kcontrol_chip(kcontrol);
+	*/
+	u32 h_control = kcontrol->private_value;
+	short gain;
+
+	hpi_handle_error(hpi_tuner_get_gain(ss, h_control, &gain));
+	ucontrol->value.integer.value[0] = gain / HPI_UNITS_PER_dB;
+
+	return 0;
+}
+
+static int snd_asihpi_tuner_gain_put(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	/*
+	struct snd_card_asihpi *asihpi = snd_kcontrol_chip(kcontrol);
+	*/
+	u32 h_control = kcontrol->private_value;
+	short gain;
+
+	gain = (ucontrol->value.integer.value[0]) * HPI_UNITS_PER_dB;
+	hpi_handle_error(hpi_tuner_set_gain(ss, h_control, gain));
+
+	return 1;
+}
+
+/* Band  */
+
+static int asihpi_tuner_band_query(struct snd_kcontrol *kcontrol,
+					u16 *band_list, u32 len) {
+	u32 h_control = kcontrol->private_value;
+	u16 err = 0;
+	u32 i;
+
+	for (i = 0; i < len; i++) {
+		err = hpi_tuner_query_band(ss,
+				h_control, i, &band_list[i]);
+		if (err != 0)
+			break;
+	}
+
+	if (err && (err != HPI_ERROR_INVALID_OBJ_INDEX))
+		return -EIO;
+
+	return i;
+}
+
+static int snd_asihpi_tuner_band_info(struct snd_kcontrol *kcontrol,
+				  struct snd_ctl_elem_info *uinfo)
+{
+	u16 tuner_bands[HPI_TUNER_BAND_LAST];
+	int num_bands = 0;
+
+	num_bands = asihpi_tuner_band_query(kcontrol, tuner_bands,
+				HPI_TUNER_BAND_LAST);
+
+	if (num_bands < 0)
+		return num_bands;
+
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+	uinfo->count = 1;
+	uinfo->value.enumerated.items = num_bands;
+
+	if (num_bands > 0) {
+		if (uinfo->value.enumerated.item >=
+					uinfo->value.enumerated.items)
+			uinfo->value.enumerated.item =
+				uinfo->value.enumerated.items - 1;
+
+		strcpy(uinfo->value.enumerated.name,
+			asihpi_tuner_band_names[
+				tuner_bands[uinfo->value.enumerated.item]]);
+
+	}
+	return 0;
+}
+
+static int snd_asihpi_tuner_band_get(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	u32 h_control = kcontrol->private_value;
+	/*
+	struct snd_card_asihpi *asihpi = snd_kcontrol_chip(kcontrol);
+	*/
+	u16 band, idx;
+	u16 tuner_bands[HPI_TUNER_BAND_LAST];
+	u32 num_bands = 0;
+
+	num_bands = asihpi_tuner_band_query(kcontrol, tuner_bands,
+				HPI_TUNER_BAND_LAST);
+
+	hpi_handle_error(hpi_tuner_get_band(ss, h_control, &band));
+
+	ucontrol->value.enumerated.item[0] = -1;
+	for (idx = 0; idx < HPI_TUNER_BAND_LAST; idx++)
+		if (tuner_bands[idx] == band) {
+			ucontrol->value.enumerated.item[0] = idx;
+			break;
+		}
+
+	return 0;
+}
+
+static int snd_asihpi_tuner_band_put(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	/*
+	struct snd_card_asihpi *asihpi = snd_kcontrol_chip(kcontrol);
+	*/
+	u32 h_control = kcontrol->private_value;
+	u16 band;
+	u16 tuner_bands[HPI_TUNER_BAND_LAST];
+	u32 num_bands = 0;
+
+	num_bands = asihpi_tuner_band_query(kcontrol, tuner_bands,
+			HPI_TUNER_BAND_LAST);
+
+	band = tuner_bands[ucontrol->value.enumerated.item[0]];
+	hpi_handle_error(hpi_tuner_set_band(ss, h_control, band));
+
+	return 1;
+}
+
+/* Freq */
+
+static int snd_asihpi_tuner_freq_info(struct snd_kcontrol *kcontrol,
+				  struct snd_ctl_elem_info *uinfo)
+{
+	u32 h_control = kcontrol->private_value;
+	u16 err;
+	u16 tuner_bands[HPI_TUNER_BAND_LAST];
+	u16 num_bands = 0, band_iter, idx;
+	u32 freq_range[3], temp_freq_range[3];
+
+	num_bands = asihpi_tuner_band_query(kcontrol, tuner_bands,
+			HPI_TUNER_BAND_LAST);
+
+	freq_range[0] = INT_MAX;
+	freq_range[1] = 0;
+	freq_range[2] = INT_MAX;
+
+	for (band_iter = 0; band_iter < num_bands; band_iter++) {
+		for (idx = 0; idx < 3; idx++) {
+			err = hpi_tuner_query_frequency(ss, h_control,
+				idx, tuner_bands[band_iter],
+				&temp_freq_range[idx]);
+			if (err != 0)
+				return err;
+		}
+
+		/* skip band with bogus stepping */
+		if (temp_freq_range[2] <= 0)
+			continue;
+
+		if (temp_freq_range[0] < freq_range[0])
+			freq_range[0] = temp_freq_range[0];
+		if (temp_freq_range[1] > freq_range[1])
+			freq_range[1] = temp_freq_range[1];
+		if (temp_freq_range[2] < freq_range[2])
+			freq_range[2] = temp_freq_range[2];
+	}
+
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 1;
+	uinfo->value.integer.min = ((int)freq_range[0]);
+	uinfo->value.integer.max = ((int)freq_range[1]);
+	uinfo->value.integer.step = ((int)freq_range[2]);
+	return 0;
+}
+
+static int snd_asihpi_tuner_freq_get(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	u32 h_control = kcontrol->private_value;
+	u32 freq;
+
+	hpi_handle_error(hpi_tuner_get_frequency(ss, h_control, &freq));
+	ucontrol->value.integer.value[0] = freq;
+
+	return 0;
+}
+
+static int snd_asihpi_tuner_freq_put(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	u32 h_control = kcontrol->private_value;
+	u32 freq;
+
+	freq = ucontrol->value.integer.value[0];
+	hpi_handle_error(hpi_tuner_set_frequency(ss, h_control, freq));
+
+	return 1;
+}
+
+/* Tuner control group initializer  */
+static int __devinit snd_asihpi_tuner_add(struct snd_card_asihpi *asihpi,
+					struct hpi_control *hpi_ctl)
+{
+	struct snd_card *card = asihpi->card;
+	struct snd_kcontrol_new snd_control;
+
+	snd_control.private_value = hpi_ctl->h_control;
+	snd_control.access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
+
+	if (!hpi_tuner_get_gain(ss, hpi_ctl->h_control, NULL)) {
+		asihpi_ctl_init(&snd_control, hpi_ctl, "gain");
+		snd_control.info = snd_asihpi_tuner_gain_info;
+		snd_control.get = snd_asihpi_tuner_gain_get;
+		snd_control.put = snd_asihpi_tuner_gain_put;
+
+		if (ctl_add(card, &snd_control, asihpi) < 0)
+			return -EINVAL;
+	}
+
+	asihpi_ctl_init(&snd_control, hpi_ctl, "band");
+	snd_control.info = snd_asihpi_tuner_band_info;
+	snd_control.get = snd_asihpi_tuner_band_get;
+	snd_control.put = snd_asihpi_tuner_band_put;
+
+	if (ctl_add(card, &snd_control, asihpi) < 0)
+		return -EINVAL;
+
+	asihpi_ctl_init(&snd_control, hpi_ctl, "freq");
+	snd_control.info = snd_asihpi_tuner_freq_info;
+	snd_control.get = snd_asihpi_tuner_freq_get;
+	snd_control.put = snd_asihpi_tuner_freq_put;
+
+	return ctl_add(card, &snd_control, asihpi);
+}
+
+/*------------------------------------------------------------
+   Meter controls
+ ------------------------------------------------------------*/
+static int snd_asihpi_meter_info(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = HPI_MAX_CHANNELS;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = 0x7FFFFFFF;
+	return 0;
+}
+
+/* linear values for 10dB steps */
+static int log2lin[] = {
+	0x7FFFFFFF, /* 0dB */
+	679093956,
+	214748365,
+	 67909396,
+	 21474837,
+	  6790940,
+	  2147484, /* -60dB */
+	   679094,
+	   214748, /* -80 */
+	    67909,
+	    21475, /* -100 */
+	     6791,
+	     2147,
+	      679,
+	      214,
+	       68,
+	       21,
+		7,
+		2
+};
+
+static int snd_asihpi_meter_get(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_value *ucontrol)
+{
+	u32 h_control = kcontrol->private_value;
+	short an_gain_mB[HPI_MAX_CHANNELS], i;
+	u16 err;
+
+	err = hpi_meter_get_peak(ss, h_control, an_gain_mB);
+
+	for (i = 0; i < HPI_MAX_CHANNELS; i++) {
+		if (err) {
+			ucontrol->value.integer.value[i] = 0;
+		} else if (an_gain_mB[i] >= 0) {
+			ucontrol->value.integer.value[i] =
+				an_gain_mB[i] << 16;
+		} else {
+			/* -ve is log value in millibels < -60dB,
+			* convert to (roughly!) linear,
+			*/
+			ucontrol->value.integer.value[i] =
+					log2lin[an_gain_mB[i] / -1000];
+		}
+	}
+	return 0;
+}
+
+static int __devinit snd_asihpi_meter_add(struct snd_card_asihpi *asihpi,
+					struct hpi_control *hpi_ctl, int subidx)
+{
+	struct snd_card *card = asihpi->card;
+	struct snd_kcontrol_new snd_control;
+
+	asihpi_ctl_init(&snd_control, hpi_ctl, "meter");
+	snd_control.access =
+	    SNDRV_CTL_ELEM_ACCESS_VOLATILE | SNDRV_CTL_ELEM_ACCESS_READ;
+	snd_control.info = snd_asihpi_meter_info;
+	snd_control.get = snd_asihpi_meter_get;
+
+	snd_control.index = subidx;
+
+	return ctl_add(card, &snd_control, asihpi);
+}
+
+/*------------------------------------------------------------
+   Multiplexer controls
+ ------------------------------------------------------------*/
+static int snd_card_asihpi_mux_count_sources(struct snd_kcontrol *snd_control)
+{
+	u32 h_control = snd_control->private_value;
+	struct hpi_control hpi_ctl;
+	int s, err;
+	for (s = 0; s < 32; s++) {
+		err = hpi_multiplexer_query_source(ss, h_control, s,
+						  &hpi_ctl.
+						  src_node_type,
+						  &hpi_ctl.
+						  src_node_index);
+		if (err)
+			break;
+	}
+	return s;
+}
+
+static int snd_asihpi_mux_info(struct snd_kcontrol *kcontrol,
+			       struct snd_ctl_elem_info *uinfo)
+{
+	int err;
+	u16 src_node_type, src_node_index;
+	u32 h_control = kcontrol->private_value;
+
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+	uinfo->count = 1;
+	uinfo->value.enumerated.items =
+	    snd_card_asihpi_mux_count_sources(kcontrol);
+
+	if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
+		uinfo->value.enumerated.item =
+		    uinfo->value.enumerated.items - 1;
+
+	err =
+	    hpi_multiplexer_query_source(ss, h_control,
+					uinfo->value.enumerated.item,
+					&src_node_type, &src_node_index);
+
+	sprintf(uinfo->value.enumerated.name, "%s %d",
+		asihpi_src_names[src_node_type - HPI_SOURCENODE_BASE],
+		src_node_index);
+	return 0;
+}
+
+static int snd_asihpi_mux_get(struct snd_kcontrol *kcontrol,
+			      struct snd_ctl_elem_value *ucontrol)
+{
+	u32 h_control = kcontrol->private_value;
+	u16 source_type, source_index;
+	u16 src_node_type, src_node_index;
+	int s;
+
+	hpi_handle_error(hpi_multiplexer_get_source(ss, h_control,
+				&source_type, &source_index));
+	/* Should cache this search result! */
+	for (s = 0; s < 256; s++) {
+		if (hpi_multiplexer_query_source(ss, h_control, s,
+					    &src_node_type, &src_node_index))
+			break;
+
+		if ((source_type == src_node_type)
+		    && (source_index == src_node_index)) {
+			ucontrol->value.enumerated.item[0] = s;
+			return 0;
+		}
+	}
+	snd_printd(KERN_WARNING
+		"control %x failed to match mux source %hu %hu\n",
+		h_control, source_type, source_index);
+	ucontrol->value.enumerated.item[0] = 0;
+	return 0;
+}
+
+static int snd_asihpi_mux_put(struct snd_kcontrol *kcontrol,
+			      struct snd_ctl_elem_value *ucontrol)
+{
+	int change;
+	u32 h_control = kcontrol->private_value;
+	u16 source_type, source_index;
+	u16 e;
+
+	change = 1;
+
+	e = hpi_multiplexer_query_source(ss, h_control,
+				    ucontrol->value.enumerated.item[0],
+				    &source_type, &source_index);
+	if (!e)
+		hpi_handle_error(
+			hpi_multiplexer_set_source(ss, h_control,
+						source_type, source_index));
+	return change;
+}
+
+
+static int  __devinit snd_asihpi_mux_add(struct snd_card_asihpi *asihpi,
+					struct hpi_control *hpi_ctl)
+{
+	struct snd_card *card = asihpi->card;
+	struct snd_kcontrol_new snd_control;
+
+#if ASI_STYLE_NAMES
+	asihpi_ctl_init(&snd_control, hpi_ctl, "multiplexer");
+#else
+	asihpi_ctl_init(&snd_control, hpi_ctl, "route");
+#endif
+	snd_control.access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
+	snd_control.info = snd_asihpi_mux_info;
+	snd_control.get = snd_asihpi_mux_get;
+	snd_control.put = snd_asihpi_mux_put;
+
+	return ctl_add(card, &snd_control, asihpi);
+
+}
+
+/*------------------------------------------------------------
+   Channel mode controls
+ ------------------------------------------------------------*/
+static int snd_asihpi_cmode_info(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_info *uinfo)
+{
+	static char *mode_names[HPI_CHANNEL_MODE_LAST] = {
+		"normal", "swap",
+		"from_left", "from_right",
+		"to_left", "to_right"
+	};
+
+	u32 h_control = kcontrol->private_value;
+	u16 mode;
+	int i;
+
+	/* HPI channel mode values can be from 1 to 6
+	Some adapters only support a contiguous subset
+	*/
+	for (i = 0; i < HPI_CHANNEL_MODE_LAST; i++)
+		if (hpi_channel_mode_query_mode(
+			ss,  h_control, i, &mode))
+			break;
+
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+	uinfo->count = 1;
+	uinfo->value.enumerated.items = i;
+
+	if (uinfo->value.enumerated.item >= i)
+		uinfo->value.enumerated.item = i - 1;
+
+	strcpy(uinfo->value.enumerated.name,
+	       mode_names[uinfo->value.enumerated.item]);
+
+	return 0;
+}
+
+static int snd_asihpi_cmode_get(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_value *ucontrol)
+{
+	u32 h_control = kcontrol->private_value;
+	u16 mode;
+
+	if (hpi_channel_mode_get(ss, h_control, &mode))
+		mode = 1;
+
+	ucontrol->value.enumerated.item[0] = mode - 1;
+
+	return 0;
+}
+
+static int snd_asihpi_cmode_put(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_value *ucontrol)
+{
+	int change;
+	u32 h_control = kcontrol->private_value;
+
+	change = 1;
+
+	hpi_handle_error(hpi_channel_mode_set(ss, h_control,
+			   ucontrol->value.enumerated.item[0] + 1));
+	return change;
+}
+
+
+static int __devinit snd_asihpi_cmode_add(struct snd_card_asihpi *asihpi,
+					struct hpi_control *hpi_ctl)
+{
+	struct snd_card *card = asihpi->card;
+	struct snd_kcontrol_new snd_control;
+
+	asihpi_ctl_init(&snd_control, hpi_ctl, "channel mode");
+	snd_control.access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
+	snd_control.info = snd_asihpi_cmode_info;
+	snd_control.get = snd_asihpi_cmode_get;
+	snd_control.put = snd_asihpi_cmode_put;
+
+	return ctl_add(card, &snd_control, asihpi);
+}
+
+/*------------------------------------------------------------
+   Sampleclock source  controls
+ ------------------------------------------------------------*/
+
+static char *sampleclock_sources[MAX_CLOCKSOURCES] =
+    { "N/A", "local PLL", "AES/EBU sync", "word external", "word header",
+	  "SMPTE", "AES/EBU in1", "auto", "network", "invalid",
+	  "prev module",
+	  "AES/EBU in2", "AES/EBU in3", "AES/EBU in4", "AES/EBU in5",
+	  "AES/EBU in6", "AES/EBU in7", "AES/EBU in8"};
+
+
+
+static int snd_asihpi_clksrc_info(struct snd_kcontrol *kcontrol,
+				  struct snd_ctl_elem_info *uinfo)
+{
+	struct snd_card_asihpi *asihpi =
+			(struct snd_card_asihpi *)(kcontrol->private_data);
+	struct clk_cache *clkcache = &asihpi->cc;
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+	uinfo->count = 1;
+	uinfo->value.enumerated.items = clkcache->count;
+
+	if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
+		uinfo->value.enumerated.item =
+				uinfo->value.enumerated.items - 1;
+
+	strcpy(uinfo->value.enumerated.name,
+	       clkcache->s[uinfo->value.enumerated.item].name);
+	return 0;
+}
+
+static int snd_asihpi_clksrc_get(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_card_asihpi *asihpi =
+			(struct snd_card_asihpi *)(kcontrol->private_data);
+	struct clk_cache *clkcache = &asihpi->cc;
+	u32 h_control = kcontrol->private_value;
+	u16 source, srcindex = 0;
+	int i;
+
+	ucontrol->value.enumerated.item[0] = 0;
+	if (hpi_sample_clock_get_source(ss, h_control, &source))
+		source = 0;
+
+	if (source == HPI_SAMPLECLOCK_SOURCE_AESEBU_INPUT)
+		if (hpi_sample_clock_get_source_index(ss, h_control, &srcindex))
+			srcindex = 0;
+
+	for (i = 0; i < clkcache->count; i++)
+		if ((clkcache->s[i].source == source) &&
+			(clkcache->s[i].index == srcindex))
+			break;
+
+	ucontrol->value.enumerated.item[0] = i;
+
+	return 0;
+}
+
+static int snd_asihpi_clksrc_put(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_card_asihpi *asihpi =
+			(struct snd_card_asihpi *)(kcontrol->private_data);
+	struct clk_cache *clkcache = &asihpi->cc;
+	int change, item;
+	u32 h_control = kcontrol->private_value;
+
+	change = 1;
+	item = ucontrol->value.enumerated.item[0];
+	if (item >= clkcache->count)
+		item = clkcache->count-1;
+
+	hpi_handle_error(hpi_sample_clock_set_source(ss,
+				h_control, clkcache->s[item].source));
+
+	if (clkcache->s[item].source == HPI_SAMPLECLOCK_SOURCE_AESEBU_INPUT)
+		hpi_handle_error(hpi_sample_clock_set_source_index(ss,
+				h_control, clkcache->s[item].index));
+	return change;
+}
+
+/*------------------------------------------------------------
+   Clkrate controls
+ ------------------------------------------------------------*/
+/* Need to change this to enumerated control with list of rates */
+static int snd_asihpi_clklocal_info(struct snd_kcontrol *kcontrol,
+				   struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 1;
+	uinfo->value.integer.min = 8000;
+	uinfo->value.integer.max = 192000;
+	uinfo->value.integer.step = 100;
+
+	return 0;
+}
+
+static int snd_asihpi_clklocal_get(struct snd_kcontrol *kcontrol,
+				  struct snd_ctl_elem_value *ucontrol)
+{
+	u32 h_control = kcontrol->private_value;
+	u32 rate;
+	u16 e;
+
+	e = hpi_sample_clock_get_local_rate(ss, h_control, &rate);
+	if (!e)
+		ucontrol->value.integer.value[0] = rate;
+	else
+		ucontrol->value.integer.value[0] = 0;
+	return 0;
+}
+
+static int snd_asihpi_clklocal_put(struct snd_kcontrol *kcontrol,
+				  struct snd_ctl_elem_value *ucontrol)
+{
+	int change;
+	u32 h_control = kcontrol->private_value;
+
+	/*  change = asihpi->mixer_clkrate[addr][0] != left ||
+	   asihpi->mixer_clkrate[addr][1] != right;
+	 */
+	change = 1;
+	hpi_handle_error(hpi_sample_clock_set_local_rate(ss, h_control,
+				      ucontrol->value.integer.value[0]));
+	return change;
+}
+
+static int snd_asihpi_clkrate_info(struct snd_kcontrol *kcontrol,
+				   struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 1;
+	uinfo->value.integer.min = 8000;
+	uinfo->value.integer.max = 192000;
+	uinfo->value.integer.step = 100;
+
+	return 0;
+}
+
+static int snd_asihpi_clkrate_get(struct snd_kcontrol *kcontrol,
+				  struct snd_ctl_elem_value *ucontrol)
+{
+	u32 h_control = kcontrol->private_value;
+	u32 rate;
+	u16 e;
+
+	e = hpi_sample_clock_get_sample_rate(ss, h_control, &rate);
+	if (!e)
+		ucontrol->value.integer.value[0] = rate;
+	else
+		ucontrol->value.integer.value[0] = 0;
+	return 0;
+}
+
+static int __devinit snd_asihpi_sampleclock_add(struct snd_card_asihpi *asihpi,
+					struct hpi_control *hpi_ctl)
+{
+	struct snd_card *card = asihpi->card;
+	struct snd_kcontrol_new snd_control;
+
+	struct clk_cache *clkcache = &asihpi->cc;
+	u32 hSC =  hpi_ctl->h_control;
+	int has_aes_in = 0;
+	int i, j;
+	u16 source;
+
+	snd_control.private_value = hpi_ctl->h_control;
+
+	clkcache->has_local = 0;
+
+	for (i = 0; i <= HPI_SAMPLECLOCK_SOURCE_LAST; i++) {
+		if  (hpi_sample_clock_query_source(ss, hSC,
+				i, &source))
+			break;
+		clkcache->s[i].source = source;
+		clkcache->s[i].index = 0;
+		clkcache->s[i].name = sampleclock_sources[source];
+		if (source == HPI_SAMPLECLOCK_SOURCE_AESEBU_INPUT)
+			has_aes_in = 1;
+		if (source == HPI_SAMPLECLOCK_SOURCE_LOCAL)
+			clkcache->has_local = 1;
+	}
+	if (has_aes_in)
+		/* already will have picked up index 0 above */
+		for (j = 1; j < 8; j++) {
+			if (hpi_sample_clock_query_source_index(ss, hSC,
+				j, HPI_SAMPLECLOCK_SOURCE_AESEBU_INPUT,
+				&source))
+				break;
+			clkcache->s[i].source =
+				HPI_SAMPLECLOCK_SOURCE_AESEBU_INPUT;
+			clkcache->s[i].index = j;
+			clkcache->s[i].name = sampleclock_sources[
+					j+HPI_SAMPLECLOCK_SOURCE_LAST];
+			i++;
+		}
+	clkcache->count = i;
+
+	asihpi_ctl_init(&snd_control, hpi_ctl, "source");
+	snd_control.access = SNDRV_CTL_ELEM_ACCESS_READWRITE ;
+	snd_control.info = snd_asihpi_clksrc_info;
+	snd_control.get = snd_asihpi_clksrc_get;
+	snd_control.put = snd_asihpi_clksrc_put;
+	if (ctl_add(card, &snd_control, asihpi) < 0)
+		return -EINVAL;
+
+
+	if (clkcache->has_local) {
+		asihpi_ctl_init(&snd_control, hpi_ctl, "local_rate");
+		snd_control.access = SNDRV_CTL_ELEM_ACCESS_READWRITE ;
+		snd_control.info = snd_asihpi_clklocal_info;
+		snd_control.get = snd_asihpi_clklocal_get;
+		snd_control.put = snd_asihpi_clklocal_put;
+
+
+		if (ctl_add(card, &snd_control, asihpi) < 0)
+			return -EINVAL;
+	}
+
+	asihpi_ctl_init(&snd_control, hpi_ctl, "rate");
+	snd_control.access =
+	    SNDRV_CTL_ELEM_ACCESS_VOLATILE | SNDRV_CTL_ELEM_ACCESS_READ;
+	snd_control.info = snd_asihpi_clkrate_info;
+	snd_control.get = snd_asihpi_clkrate_get;
+
+	return ctl_add(card, &snd_control, asihpi);
+}
+/*------------------------------------------------------------
+   Mixer
+ ------------------------------------------------------------*/
+
+static int __devinit snd_card_asihpi_mixer_new(struct snd_card_asihpi *asihpi)
+{
+	struct snd_card *card = asihpi->card;
+	unsigned int idx = 0;
+	unsigned int subindex = 0;
+	int err;
+	struct hpi_control hpi_ctl, prev_ctl;
+
+	if (snd_BUG_ON(!asihpi))
+		return -EINVAL;
+	strcpy(card->mixername, "asihpi mixer");
+
+	err =
+	    hpi_mixer_open(ss, asihpi->adapter_index,
+			  &asihpi->h_mixer);
+	hpi_handle_error(err);
+	if (err)
+		return -err;
+
+	for (idx = 0; idx < 2000; idx++) {
+		err = hpi_mixer_get_control_by_index(
+				ss, asihpi->h_mixer,
+				idx,
+				&hpi_ctl.src_node_type,
+				&hpi_ctl.src_node_index,
+				&hpi_ctl.dst_node_type,
+				&hpi_ctl.dst_node_index,
+				&hpi_ctl.control_type,
+				&hpi_ctl.h_control);
+		if (err) {
+			if (err == HPI_ERROR_CONTROL_DISABLED) {
+				if (mixer_dump)
+					snd_printk(KERN_INFO
+						   "disabled HPI control(%d)\n",
+						   idx);
+				continue;
+			} else
+				break;
+
+		}
+
+		hpi_ctl.src_node_type -= HPI_SOURCENODE_BASE;
+		hpi_ctl.dst_node_type -= HPI_DESTNODE_BASE;
+
+		/* ASI50xx in SSX mode has multiple meters on the same node.
+		   Use subindex to create distinct ALSA controls
+		   for any duplicated controls.
+		*/
+		if ((hpi_ctl.control_type == prev_ctl.control_type) &&
+		    (hpi_ctl.src_node_type == prev_ctl.src_node_type) &&
+		    (hpi_ctl.src_node_index == prev_ctl.src_node_index) &&
+		    (hpi_ctl.dst_node_type == prev_ctl.dst_node_type) &&
+		    (hpi_ctl.dst_node_index == prev_ctl.dst_node_index))
+			subindex++;
+		else
+			subindex = 0;
+
+		prev_ctl = hpi_ctl;
+
+		switch (hpi_ctl.control_type) {
+		case HPI_CONTROL_VOLUME:
+			err = snd_asihpi_volume_add(asihpi, &hpi_ctl);
+			break;
+		case HPI_CONTROL_LEVEL:
+			err = snd_asihpi_level_add(asihpi, &hpi_ctl);
+			break;
+		case HPI_CONTROL_MULTIPLEXER:
+			err = snd_asihpi_mux_add(asihpi, &hpi_ctl);
+			break;
+		case HPI_CONTROL_CHANNEL_MODE:
+			err = snd_asihpi_cmode_add(asihpi, &hpi_ctl);
+			break;
+		case HPI_CONTROL_METER:
+			err = snd_asihpi_meter_add(asihpi, &hpi_ctl, subindex);
+			break;
+		case HPI_CONTROL_SAMPLECLOCK:
+			err = snd_asihpi_sampleclock_add(
+						asihpi, &hpi_ctl);
+			break;
+		case HPI_CONTROL_CONNECTION:	/* ignore these */
+			continue;
+		case HPI_CONTROL_TUNER:
+			err = snd_asihpi_tuner_add(asihpi, &hpi_ctl);
+			break;
+		case HPI_CONTROL_AESEBU_TRANSMITTER:
+			err = snd_asihpi_aesebu_tx_add(asihpi, &hpi_ctl);
+			break;
+		case HPI_CONTROL_AESEBU_RECEIVER:
+			err = snd_asihpi_aesebu_rx_add(asihpi, &hpi_ctl);
+			break;
+		case HPI_CONTROL_VOX:
+		case HPI_CONTROL_BITSTREAM:
+		case HPI_CONTROL_MICROPHONE:
+		case HPI_CONTROL_PARAMETRIC_EQ:
+		case HPI_CONTROL_COMPANDER:
+		default:
+			if (mixer_dump)
+				snd_printk(KERN_INFO
+					"untranslated HPI control"
+					"(%d) %d %d %d %d %d\n",
+					idx,
+					hpi_ctl.control_type,
+					hpi_ctl.src_node_type,
+					hpi_ctl.src_node_index,
+					hpi_ctl.dst_node_type,
+					hpi_ctl.dst_node_index);
+			continue;
+		};
+		if (err < 0)
+			return err;
+	}
+	if (HPI_ERROR_INVALID_OBJ_INDEX != err)
+		hpi_handle_error(err);
+
+	snd_printk(KERN_INFO "%d mixer controls found\n", idx);
+
+	return 0;
+}
+
+/*------------------------------------------------------------
+   /proc interface
+ ------------------------------------------------------------*/
+
+static void
+snd_asihpi_proc_read(struct snd_info_entry *entry,
+			struct snd_info_buffer *buffer)
+{
+	struct snd_card_asihpi *asihpi = entry->private_data;
+	u16 version;
+	u32 h_control;
+	u32 rate = 0;
+	u16 source = 0;
+	int err;
+
+	snd_iprintf(buffer, "ASIHPI driver proc file\n");
+	snd_iprintf(buffer,
+		"adapter ID=%4X\n_index=%d\n"
+		"num_outstreams=%d\n_num_instreams=%d\n",
+		asihpi->type, asihpi->adapter_index,
+		asihpi->num_outstreams, asihpi->num_instreams);
+
+	version = asihpi->version;
+	snd_iprintf(buffer,
+		"serial#=%d\n_hw version %c%d\nDSP code version %03d\n",
+		asihpi->serial_number, ((version >> 3) & 0xf) + 'A',
+		version & 0x7,
+		((version >> 13) * 100) + ((version >> 7) & 0x3f));
+
+	err = hpi_mixer_get_control(ss, asihpi->h_mixer,
+				  HPI_SOURCENODE_CLOCK_SOURCE, 0, 0, 0,
+				  HPI_CONTROL_SAMPLECLOCK, &h_control);
+
+	if (!err) {
+		err = hpi_sample_clock_get_sample_rate(ss,
+					h_control, &rate);
+		err += hpi_sample_clock_get_source(ss, h_control, &source);
+
+		if (!err)
+			snd_iprintf(buffer, "sample_clock=%d_hz, source %s\n",
+			rate, sampleclock_sources[source]);
+	}
+
+}
+
+
+static void __devinit snd_asihpi_proc_init(struct snd_card_asihpi *asihpi)
+{
+	struct snd_info_entry *entry;
+
+	if (!snd_card_proc_new(asihpi->card, "info", &entry))
+		snd_info_set_text_ops(entry, asihpi, snd_asihpi_proc_read);
+}
+
+/*------------------------------------------------------------
+   HWDEP
+ ------------------------------------------------------------*/
+
+static int snd_asihpi_hpi_open(struct snd_hwdep *hw, struct file *file)
+{
+	if (enable_hpi_hwdep)
+		return 0;
+	else
+		return -ENODEV;
+
+}
+
+static int snd_asihpi_hpi_release(struct snd_hwdep *hw, struct file *file)
+{
+	if (enable_hpi_hwdep)
+		return asihpi_hpi_release(file);
+	else
+		return -ENODEV;
+}
+
+static int snd_asihpi_hpi_ioctl(struct snd_hwdep *hw, struct file *file,
+				unsigned int cmd, unsigned long arg)
+{
+	if (enable_hpi_hwdep)
+		return asihpi_hpi_ioctl(file, cmd, arg);
+	else
+		return -ENODEV;
+}
+
+
+/* results in /dev/snd/hwC#D0 file for each card with index #
+   also /proc/asound/hwdep will contain '#-00: asihpi (HPI) for each card'
+*/
+static int __devinit snd_asihpi_hpi_new(struct snd_card_asihpi *asihpi,
+	int device, struct snd_hwdep **rhwdep)
+{
+	struct snd_hwdep *hw;
+	int err;
+
+	if (rhwdep)
+		*rhwdep = NULL;
+	err = snd_hwdep_new(asihpi->card, "HPI", device, &hw);
+	if (err < 0)
+		return err;
+	strcpy(hw->name, "asihpi (HPI)");
+	hw->iface = SNDRV_HWDEP_IFACE_LAST;
+	hw->ops.open = snd_asihpi_hpi_open;
+	hw->ops.ioctl = snd_asihpi_hpi_ioctl;
+	hw->ops.release = snd_asihpi_hpi_release;
+	hw->private_data = asihpi;
+	if (rhwdep)
+		*rhwdep = hw;
+	return 0;
+}
+
+/*------------------------------------------------------------
+   CARD
+ ------------------------------------------------------------*/
+static int __devinit snd_asihpi_probe(struct pci_dev *pci_dev,
+				       const struct pci_device_id *pci_id)
+{
+	int err;
+
+	u16 version;
+	int pcm_substreams;
+
+	struct hpi_adapter *hpi_card;
+	struct snd_card *card;
+	struct snd_card_asihpi *asihpi;
+
+	u32 h_control;
+	u32 h_stream;
+
+	static int dev;
+	if (dev >= SNDRV_CARDS)
+		return -ENODEV;
+
+	/* Should this be enable[hpi_card->index] ? */
+	if (!enable[dev]) {
+		dev++;
+		return -ENOENT;
+	}
+
+	err = asihpi_adapter_probe(pci_dev, pci_id);
+	if (err < 0)
+		return err;
+
+	hpi_card = pci_get_drvdata(pci_dev);
+	/* first try to give the card the same index as its hardware index */
+	err = snd_card_create(hpi_card->index,
+			      id[hpi_card->index], THIS_MODULE,
+			      sizeof(struct snd_card_asihpi),
+			      &card);
+	if (err < 0) {
+		/* if that fails, try the default index==next available */
+		err =
+		    snd_card_create(index[dev], id[dev],
+				    THIS_MODULE,
+				    sizeof(struct snd_card_asihpi),
+				    &card);
+		if (err < 0)
+			return err;
+		snd_printk(KERN_WARNING
+			"**** WARNING **** adapter index %d->ALSA index %d\n",
+			hpi_card->index, card->number);
+	}
+
+	asihpi = (struct snd_card_asihpi *) card->private_data;
+	asihpi->card = card;
+	asihpi->pci = hpi_card->pci;
+	asihpi->adapter_index = hpi_card->index;
+	hpi_handle_error(hpi_adapter_get_info(ss,
+				 asihpi->adapter_index,
+				 &asihpi->num_outstreams,
+				 &asihpi->num_instreams,
+				 &asihpi->version,
+				 &asihpi->serial_number, &asihpi->type));
+
+	version = asihpi->version;
+	snd_printk(KERN_INFO "adapter ID=%4X index=%d num_outstreams=%d "
+			"num_instreams=%d S/N=%d\n"
+			"hw version %c%d DSP code version %03d\n",
+			asihpi->type, asihpi->adapter_index,
+			asihpi->num_outstreams,
+			asihpi->num_instreams, asihpi->serial_number,
+			((version >> 3) & 0xf) + 'A',
+			version & 0x7,
+			((version >> 13) * 100) + ((version >> 7) & 0x3f));
+
+	pcm_substreams = asihpi->num_outstreams;
+	if (pcm_substreams < asihpi->num_instreams)
+		pcm_substreams = asihpi->num_instreams;
+
+	err = hpi_adapter_get_property(ss, asihpi->adapter_index,
+		HPI_ADAPTER_PROPERTY_CAPS1,
+		NULL, &asihpi->support_grouping);
+	if (err)
+		asihpi->support_grouping = 0;
+
+	err = hpi_adapter_get_property(ss, asihpi->adapter_index,
+		HPI_ADAPTER_PROPERTY_CAPS2,
+		&asihpi->support_mrx, NULL);
+	if (err)
+		asihpi->support_mrx = 0;
+
+	err = hpi_adapter_get_property(ss, asihpi->adapter_index,
+		HPI_ADAPTER_PROPERTY_INTERVAL,
+		NULL, &asihpi->update_interval_frames);
+	if (err)
+		asihpi->update_interval_frames = 512;
+
+	hpi_handle_error(hpi_instream_open(ss, asihpi->adapter_index,
+			     0, &h_stream));
+
+	err = hpi_instream_host_buffer_free(ss, h_stream);
+	asihpi->support_mmap = (!err);
+
+	hpi_handle_error(hpi_instream_close(ss, h_stream));
+
+	err = hpi_adapter_get_property(ss, asihpi->adapter_index,
+		HPI_ADAPTER_PROPERTY_CURCHANNELS,
+		&asihpi->in_max_chans, &asihpi->out_max_chans);
+	if (err) {
+		asihpi->in_max_chans = 2;
+		asihpi->out_max_chans = 2;
+	}
+
+	snd_printk(KERN_INFO "supports mmap:%d grouping:%d mrx:%d\n",
+			asihpi->support_mmap,
+			asihpi->support_grouping,
+			asihpi->support_mrx
+	      );
+
+
+	err = snd_card_asihpi_pcm_new(asihpi, 0, pcm_substreams);
+	if (err < 0) {
+		snd_printk(KERN_ERR "pcm_new failed\n");
+		goto __nodev;
+	}
+	err = snd_card_asihpi_mixer_new(asihpi);
+	if (err < 0) {
+		snd_printk(KERN_ERR "mixer_new failed\n");
+		goto __nodev;
+	}
+
+	err = hpi_mixer_get_control(ss, asihpi->h_mixer,
+				  HPI_SOURCENODE_CLOCK_SOURCE, 0, 0, 0,
+				  HPI_CONTROL_SAMPLECLOCK, &h_control);
+
+	if (!err)
+		err = hpi_sample_clock_set_local_rate(
+			ss, h_control, adapter_fs);
+
+	snd_asihpi_proc_init(asihpi);
+
+	/* always create, can be enabled or disabled dynamically
+	    by enable_hwdep  module param*/
+	snd_asihpi_hpi_new(asihpi, 0, NULL);
+
+	if (asihpi->support_mmap)
+		strcpy(card->driver, "ASIHPI-MMAP");
+	else
+		strcpy(card->driver, "ASIHPI");
+
+	sprintf(card->shortname, "AudioScience ASI%4X", asihpi->type);
+	sprintf(card->longname, "%s %i",
+			card->shortname, asihpi->adapter_index);
+	err = snd_card_register(card);
+	if (!err) {
+		hpi_card->snd_card_asihpi = card;
+		dev++;
+		return 0;
+	}
+__nodev:
+	snd_card_free(card);
+	snd_printk(KERN_ERR "snd_asihpi_probe error %d\n", err);
+	return err;
+
+}
+
+static void __devexit snd_asihpi_remove(struct pci_dev *pci_dev)
+{
+	struct hpi_adapter *hpi_card = pci_get_drvdata(pci_dev);
+
+	snd_card_free(hpi_card->snd_card_asihpi);
+	hpi_card->snd_card_asihpi = NULL;
+	asihpi_adapter_remove(pci_dev);
+}
+
+static DEFINE_PCI_DEVICE_TABLE(asihpi_pci_tbl) = {
+	{HPI_PCI_VENDOR_ID_TI, HPI_PCI_DEV_ID_DSP6205,
+		HPI_PCI_VENDOR_ID_AUDIOSCIENCE, PCI_ANY_ID, 0, 0,
+		(kernel_ulong_t)HPI_6205},
+	{HPI_PCI_VENDOR_ID_TI, HPI_PCI_DEV_ID_PCI2040,
+		HPI_PCI_VENDOR_ID_AUDIOSCIENCE, PCI_ANY_ID, 0, 0,
+		(kernel_ulong_t)HPI_6000},
+	{0,}
+};
+MODULE_DEVICE_TABLE(pci, asihpi_pci_tbl);
+
+static struct pci_driver driver = {
+	.name = "asihpi",
+	.id_table = asihpi_pci_tbl,
+	.probe = snd_asihpi_probe,
+	.remove = __devexit_p(snd_asihpi_remove),
+#ifdef CONFIG_PM
+/*	.suspend = snd_asihpi_suspend,
+	.resume = snd_asihpi_resume, */
+#endif
+};
+
+static int __init snd_asihpi_init(void)
+{
+	asihpi_init();
+	return pci_register_driver(&driver);
+}
+
+static void __exit snd_asihpi_exit(void)
+{
+
+	pci_unregister_driver(&driver);
+	asihpi_exit();
+}
+
+module_init(snd_asihpi_init)
+module_exit(snd_asihpi_exit)
+