Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 0 insertions, 938 deletions

diff --git a/ANDROID_3.4.5/sound/mips/hal2.c b/ANDROID_3.4.5/sound/mips/hal2.c
deleted file mode 100644
index 5f88d1f0..00000000
--- a/ANDROID_3.4.5/sound/mips/hal2.c
+++ /dev/null
@@ -1,938 +0,0 @@
-/*
- *  Driver for A2 audio system used in SGI machines
- *  Copyright (c) 2008 Thomas Bogendoerfer <tsbogend@alpha.fanken.de>
- *
- *  Based on OSS code from Ladislav Michl <ladis@linux-mips.org>, which
- *  was based on code from Ulf Carlsson
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License version 2 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., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/dma-mapping.h>
-#include <linux/platform_device.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-
-#include <asm/sgi/hpc3.h>
-#include <asm/sgi/ip22.h>
-
-#include <sound/core.h>
-#include <sound/control.h>
-#include <sound/pcm.h>
-#include <sound/pcm-indirect.h>
-#include <sound/initval.h>
-
-#include "hal2.h"
-
-static int index = SNDRV_DEFAULT_IDX1;  /* Index 0-MAX */
-static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
-
-module_param(index, int, 0444);
-MODULE_PARM_DESC(index, "Index value for SGI HAL2 soundcard.");
-module_param(id, charp, 0444);
-MODULE_PARM_DESC(id, "ID string for SGI HAL2 soundcard.");
-MODULE_DESCRIPTION("ALSA driver for SGI HAL2 audio");
-MODULE_AUTHOR("Thomas Bogendoerfer");
-MODULE_LICENSE("GPL");
-
-
-#define H2_BLOCK_SIZE	1024
-#define H2_BUF_SIZE	16384
-
-struct hal2_pbus {
-	struct hpc3_pbus_dmacregs *pbus;
-	int pbusnr;
-	unsigned int ctrl;		/* Current state of pbus->pbdma_ctrl */
-};
-
-struct hal2_desc {
-	struct hpc_dma_desc desc;
-	u32 pad;			/* padding */
-};
-
-struct hal2_codec {
-	struct snd_pcm_indirect pcm_indirect;
-	struct snd_pcm_substream *substream;
-
-	unsigned char *buffer;
-	dma_addr_t buffer_dma;
-	struct hal2_desc *desc;
-	dma_addr_t desc_dma;
-	int desc_count;
-	struct hal2_pbus pbus;
-	int voices;			/* mono/stereo */
-	unsigned int sample_rate;
-	unsigned int master;		/* Master frequency */
-	unsigned short mod;		/* MOD value */
-	unsigned short inc;		/* INC value */
-};
-
-#define H2_MIX_OUTPUT_ATT	0
-#define H2_MIX_INPUT_GAIN	1
-
-struct snd_hal2 {
-	struct snd_card *card;
-
-	struct hal2_ctl_regs *ctl_regs;	/* HAL2 ctl registers */
-	struct hal2_aes_regs *aes_regs;	/* HAL2 aes registers */
-	struct hal2_vol_regs *vol_regs;	/* HAL2 vol registers */
-	struct hal2_syn_regs *syn_regs;	/* HAL2 syn registers */
-
-	struct hal2_codec dac;
-	struct hal2_codec adc;
-};
-
-#define H2_INDIRECT_WAIT(regs)	while (hal2_read(&regs->isr) & H2_ISR_TSTATUS);
-
-#define H2_READ_ADDR(addr)	(addr | (1<<7))
-#define H2_WRITE_ADDR(addr)	(addr)
-
-static inline u32 hal2_read(u32 *reg)
-{
-	return __raw_readl(reg);
-}
-
-static inline void hal2_write(u32 val, u32 *reg)
-{
-	__raw_writel(val, reg);
-}
-
-
-static u32 hal2_i_read32(struct snd_hal2 *hal2, u16 addr)
-{
-	u32 ret;
-	struct hal2_ctl_regs *regs = hal2->ctl_regs;
-
-	hal2_write(H2_READ_ADDR(addr), &regs->iar);
-	H2_INDIRECT_WAIT(regs);
-	ret = hal2_read(&regs->idr0) & 0xffff;
-	hal2_write(H2_READ_ADDR(addr) | 0x1, &regs->iar);
-	H2_INDIRECT_WAIT(regs);
-	ret |= (hal2_read(&regs->idr0) & 0xffff) << 16;
-	return ret;
-}
-
-static void hal2_i_write16(struct snd_hal2 *hal2, u16 addr, u16 val)
-{
-	struct hal2_ctl_regs *regs = hal2->ctl_regs;
-
-	hal2_write(val, &regs->idr0);
-	hal2_write(0, &regs->idr1);
-	hal2_write(0, &regs->idr2);
-	hal2_write(0, &regs->idr3);
-	hal2_write(H2_WRITE_ADDR(addr), &regs->iar);
-	H2_INDIRECT_WAIT(regs);
-}
-
-static void hal2_i_write32(struct snd_hal2 *hal2, u16 addr, u32 val)
-{
-	struct hal2_ctl_regs *regs = hal2->ctl_regs;
-
-	hal2_write(val & 0xffff, &regs->idr0);
-	hal2_write(val >> 16, &regs->idr1);
-	hal2_write(0, &regs->idr2);
-	hal2_write(0, &regs->idr3);
-	hal2_write(H2_WRITE_ADDR(addr), &regs->iar);
-	H2_INDIRECT_WAIT(regs);
-}
-
-static void hal2_i_setbit16(struct snd_hal2 *hal2, u16 addr, u16 bit)
-{
-	struct hal2_ctl_regs *regs = hal2->ctl_regs;
-
-	hal2_write(H2_READ_ADDR(addr), &regs->iar);
-	H2_INDIRECT_WAIT(regs);
-	hal2_write((hal2_read(&regs->idr0) & 0xffff) | bit, &regs->idr0);
-	hal2_write(0, &regs->idr1);
-	hal2_write(0, &regs->idr2);
-	hal2_write(0, &regs->idr3);
-	hal2_write(H2_WRITE_ADDR(addr), &regs->iar);
-	H2_INDIRECT_WAIT(regs);
-}
-
-static void hal2_i_clearbit16(struct snd_hal2 *hal2, u16 addr, u16 bit)
-{
-	struct hal2_ctl_regs *regs = hal2->ctl_regs;
-
-	hal2_write(H2_READ_ADDR(addr), &regs->iar);
-	H2_INDIRECT_WAIT(regs);
-	hal2_write((hal2_read(&regs->idr0) & 0xffff) & ~bit, &regs->idr0);
-	hal2_write(0, &regs->idr1);
-	hal2_write(0, &regs->idr2);
-	hal2_write(0, &regs->idr3);
-	hal2_write(H2_WRITE_ADDR(addr), &regs->iar);
-	H2_INDIRECT_WAIT(regs);
-}
-
-static int hal2_gain_info(struct snd_kcontrol *kcontrol,
-			       struct snd_ctl_elem_info *uinfo)
-{
-	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
-	uinfo->count = 2;
-	uinfo->value.integer.min = 0;
-	switch ((int)kcontrol->private_value) {
-	case H2_MIX_OUTPUT_ATT:
-		uinfo->value.integer.max = 31;
-		break;
-	case H2_MIX_INPUT_GAIN:
-		uinfo->value.integer.max = 15;
-		break;
-	}
-	return 0;
-}
-
-static int hal2_gain_get(struct snd_kcontrol *kcontrol,
-			       struct snd_ctl_elem_value *ucontrol)
-{
-	struct snd_hal2 *hal2 = snd_kcontrol_chip(kcontrol);
-	u32 tmp;
-	int l, r;
-
-	switch ((int)kcontrol->private_value) {
-	case H2_MIX_OUTPUT_ATT:
-		tmp = hal2_i_read32(hal2, H2I_DAC_C2);
-		if (tmp & H2I_C2_MUTE) {
-			l = 0;
-			r = 0;
-		} else {
-			l = 31 - ((tmp >> H2I_C2_L_ATT_SHIFT) & 31);
-			r = 31 - ((tmp >> H2I_C2_R_ATT_SHIFT) & 31);
-		}
-		break;
-	case H2_MIX_INPUT_GAIN:
-		tmp = hal2_i_read32(hal2, H2I_ADC_C2);
-		l = (tmp >> H2I_C2_L_GAIN_SHIFT) & 15;
-		r = (tmp >> H2I_C2_R_GAIN_SHIFT) & 15;
-		break;
-	}
-	ucontrol->value.integer.value[0] = l;
-	ucontrol->value.integer.value[1] = r;
-
-	return 0;
-}
-
-static int hal2_gain_put(struct snd_kcontrol *kcontrol,
-			 struct snd_ctl_elem_value *ucontrol)
-{
-	struct snd_hal2 *hal2 = snd_kcontrol_chip(kcontrol);
-	u32 old, new;
-	int l, r;
-
-	l = ucontrol->value.integer.value[0];
-	r = ucontrol->value.integer.value[1];
-
-	switch ((int)kcontrol->private_value) {
-	case H2_MIX_OUTPUT_ATT:
-		old = hal2_i_read32(hal2, H2I_DAC_C2);
-		new = old & ~(H2I_C2_L_ATT_M | H2I_C2_R_ATT_M | H2I_C2_MUTE);
-		if (l | r) {
-			l = 31 - l;
-			r = 31 - r;
-			new |= (l << H2I_C2_L_ATT_SHIFT);
-			new |= (r << H2I_C2_R_ATT_SHIFT);
-		} else
-			new |= H2I_C2_L_ATT_M | H2I_C2_R_ATT_M | H2I_C2_MUTE;
-		hal2_i_write32(hal2, H2I_DAC_C2, new);
-		break;
-	case H2_MIX_INPUT_GAIN:
-		old = hal2_i_read32(hal2, H2I_ADC_C2);
-		new = old & ~(H2I_C2_L_GAIN_M | H2I_C2_R_GAIN_M);
-		new |= (l << H2I_C2_L_GAIN_SHIFT);
-		new |= (r << H2I_C2_R_GAIN_SHIFT);
-		hal2_i_write32(hal2, H2I_ADC_C2, new);
-		break;
-	}
-	return old != new;
-}
-
-static struct snd_kcontrol_new hal2_ctrl_headphone __devinitdata = {
-	.iface          = SNDRV_CTL_ELEM_IFACE_MIXER,
-	.name           = "Headphone Playback Volume",
-	.access         = SNDRV_CTL_ELEM_ACCESS_READWRITE,
-	.private_value  = H2_MIX_OUTPUT_ATT,
-	.info           = hal2_gain_info,
-	.get            = hal2_gain_get,
-	.put            = hal2_gain_put,
-};
-
-static struct snd_kcontrol_new hal2_ctrl_mic __devinitdata = {
-	.iface          = SNDRV_CTL_ELEM_IFACE_MIXER,
-	.name           = "Mic Capture Volume",
-	.access         = SNDRV_CTL_ELEM_ACCESS_READWRITE,
-	.private_value  = H2_MIX_INPUT_GAIN,
-	.info           = hal2_gain_info,
-	.get            = hal2_gain_get,
-	.put            = hal2_gain_put,
-};
-
-static int __devinit hal2_mixer_create(struct snd_hal2 *hal2)
-{
-	int err;
-
-	/* mute DAC */
-	hal2_i_write32(hal2, H2I_DAC_C2,
-		       H2I_C2_L_ATT_M | H2I_C2_R_ATT_M | H2I_C2_MUTE);
-	/* mute ADC */
-	hal2_i_write32(hal2, H2I_ADC_C2, 0);
-
-	err = snd_ctl_add(hal2->card,
-			  snd_ctl_new1(&hal2_ctrl_headphone, hal2));
-	if (err < 0)
-		return err;
-
-	err = snd_ctl_add(hal2->card,
-			  snd_ctl_new1(&hal2_ctrl_mic, hal2));
-	if (err < 0)
-		return err;
-
-	return 0;
-}
-
-static irqreturn_t hal2_interrupt(int irq, void *dev_id)
-{
-	struct snd_hal2 *hal2 = dev_id;
-	irqreturn_t ret = IRQ_NONE;
-
-	/* decide what caused this interrupt */
-	if (hal2->dac.pbus.pbus->pbdma_ctrl & HPC3_PDMACTRL_INT) {
-		snd_pcm_period_elapsed(hal2->dac.substream);
-		ret = IRQ_HANDLED;
-	}
-	if (hal2->adc.pbus.pbus->pbdma_ctrl & HPC3_PDMACTRL_INT) {
-		snd_pcm_period_elapsed(hal2->adc.substream);
-		ret = IRQ_HANDLED;
-	}
-	return ret;
-}
-
-static int hal2_compute_rate(struct hal2_codec *codec, unsigned int rate)
-{
-	unsigned short mod;
-
-	if (44100 % rate < 48000 % rate) {
-		mod = 4 * 44100 / rate;
-		codec->master = 44100;
-	} else {
-		mod = 4 * 48000 / rate;
-		codec->master = 48000;
-	}
-
-	codec->inc = 4;
-	codec->mod = mod;
-	rate = 4 * codec->master / mod;
-
-	return rate;
-}
-
-static void hal2_set_dac_rate(struct snd_hal2 *hal2)
-{
-	unsigned int master = hal2->dac.master;
-	int inc = hal2->dac.inc;
-	int mod = hal2->dac.mod;
-
-	hal2_i_write16(hal2, H2I_BRES1_C1, (master == 44100) ? 1 : 0);
-	hal2_i_write32(hal2, H2I_BRES1_C2,
-		       ((0xffff & (inc - mod - 1)) << 16) | inc);
-}
-
-static void hal2_set_adc_rate(struct snd_hal2 *hal2)
-{
-	unsigned int master = hal2->adc.master;
-	int inc = hal2->adc.inc;
-	int mod = hal2->adc.mod;
-
-	hal2_i_write16(hal2, H2I_BRES2_C1, (master == 44100) ? 1 : 0);
-	hal2_i_write32(hal2, H2I_BRES2_C2,
-		       ((0xffff & (inc - mod - 1)) << 16) | inc);
-}
-
-static void hal2_setup_dac(struct snd_hal2 *hal2)
-{
-	unsigned int fifobeg, fifoend, highwater, sample_size;
-	struct hal2_pbus *pbus = &hal2->dac.pbus;
-
-	/* Now we set up some PBUS information. The PBUS needs information about
-	 * what portion of the fifo it will use. If it's receiving or
-	 * transmitting, and finally whether the stream is little endian or big
-	 * endian. The information is written later, on the start call.
-	 */
-	sample_size = 2 * hal2->dac.voices;
-	/* Fifo should be set to hold exactly four samples. Highwater mark
-	 * should be set to two samples. */
-	highwater = (sample_size * 2) >> 1;	/* halfwords */
-	fifobeg = 0;				/* playback is first */
-	fifoend = (sample_size * 4) >> 3;	/* doublewords */
-	pbus->ctrl = HPC3_PDMACTRL_RT | HPC3_PDMACTRL_LD |
-		     (highwater << 8) | (fifobeg << 16) | (fifoend << 24);
-	/* We disable everything before we do anything at all */
-	pbus->pbus->pbdma_ctrl = HPC3_PDMACTRL_LD;
-	hal2_i_clearbit16(hal2, H2I_DMA_PORT_EN, H2I_DMA_PORT_EN_CODECTX);
-	/* Setup the HAL2 for playback */
-	hal2_set_dac_rate(hal2);
-	/* Set endianess */
-	hal2_i_clearbit16(hal2, H2I_DMA_END, H2I_DMA_END_CODECTX);
-	/* Set DMA bus */
-	hal2_i_setbit16(hal2, H2I_DMA_DRV, (1 << pbus->pbusnr));
-	/* We are using 1st Bresenham clock generator for playback */
-	hal2_i_write16(hal2, H2I_DAC_C1, (pbus->pbusnr << H2I_C1_DMA_SHIFT)
-			| (1 << H2I_C1_CLKID_SHIFT)
-			| (hal2->dac.voices << H2I_C1_DATAT_SHIFT));
-}
-
-static void hal2_setup_adc(struct snd_hal2 *hal2)
-{
-	unsigned int fifobeg, fifoend, highwater, sample_size;
-	struct hal2_pbus *pbus = &hal2->adc.pbus;
-
-	sample_size = 2 * hal2->adc.voices;
-	highwater = (sample_size * 2) >> 1;		/* halfwords */
-	fifobeg = (4 * 4) >> 3;				/* record is second */
-	fifoend = (4 * 4 + sample_size * 4) >> 3;	/* doublewords */
-	pbus->ctrl = HPC3_PDMACTRL_RT | HPC3_PDMACTRL_RCV | HPC3_PDMACTRL_LD |
-		     (highwater << 8) | (fifobeg << 16) | (fifoend << 24);
-	pbus->pbus->pbdma_ctrl = HPC3_PDMACTRL_LD;
-	hal2_i_clearbit16(hal2, H2I_DMA_PORT_EN, H2I_DMA_PORT_EN_CODECR);
-	/* Setup the HAL2 for record */
-	hal2_set_adc_rate(hal2);
-	/* Set endianess */
-	hal2_i_clearbit16(hal2, H2I_DMA_END, H2I_DMA_END_CODECR);
-	/* Set DMA bus */
-	hal2_i_setbit16(hal2, H2I_DMA_DRV, (1 << pbus->pbusnr));
-	/* We are using 2nd Bresenham clock generator for record */
-	hal2_i_write16(hal2, H2I_ADC_C1, (pbus->pbusnr << H2I_C1_DMA_SHIFT)
-			| (2 << H2I_C1_CLKID_SHIFT)
-			| (hal2->adc.voices << H2I_C1_DATAT_SHIFT));
-}
-
-static void hal2_start_dac(struct snd_hal2 *hal2)
-{
-	struct hal2_pbus *pbus = &hal2->dac.pbus;
-
-	pbus->pbus->pbdma_dptr = hal2->dac.desc_dma;
-	pbus->pbus->pbdma_ctrl = pbus->ctrl | HPC3_PDMACTRL_ACT;
-	/* enable DAC */
-	hal2_i_setbit16(hal2, H2I_DMA_PORT_EN, H2I_DMA_PORT_EN_CODECTX);
-}
-
-static void hal2_start_adc(struct snd_hal2 *hal2)
-{
-	struct hal2_pbus *pbus = &hal2->adc.pbus;
-
-	pbus->pbus->pbdma_dptr = hal2->adc.desc_dma;
-	pbus->pbus->pbdma_ctrl = pbus->ctrl | HPC3_PDMACTRL_ACT;
-	/* enable ADC */
-	hal2_i_setbit16(hal2, H2I_DMA_PORT_EN, H2I_DMA_PORT_EN_CODECR);
-}
-
-static inline void hal2_stop_dac(struct snd_hal2 *hal2)
-{
-	hal2->dac.pbus.pbus->pbdma_ctrl = HPC3_PDMACTRL_LD;
-	/* The HAL2 itself may remain enabled safely */
-}
-
-static inline void hal2_stop_adc(struct snd_hal2 *hal2)
-{
-	hal2->adc.pbus.pbus->pbdma_ctrl = HPC3_PDMACTRL_LD;
-}
-
-static int hal2_alloc_dmabuf(struct hal2_codec *codec)
-{
-	struct hal2_desc *desc;
-	dma_addr_t desc_dma, buffer_dma;
-	int count = H2_BUF_SIZE / H2_BLOCK_SIZE;
-	int i;
-
-	codec->buffer = dma_alloc_noncoherent(NULL, H2_BUF_SIZE,
-					      &buffer_dma, GFP_KERNEL);
-	if (!codec->buffer)
-		return -ENOMEM;
-	desc = dma_alloc_noncoherent(NULL, count * sizeof(struct hal2_desc),
-				     &desc_dma, GFP_KERNEL);
-	if (!desc) {
-		dma_free_noncoherent(NULL, H2_BUF_SIZE,
-				     codec->buffer, buffer_dma);
-		return -ENOMEM;
-	}
-	codec->buffer_dma = buffer_dma;
-	codec->desc_dma = desc_dma;
-	codec->desc = desc;
-	for (i = 0; i < count; i++) {
-		desc->desc.pbuf = buffer_dma + i * H2_BLOCK_SIZE;
-		desc->desc.cntinfo = HPCDMA_XIE | H2_BLOCK_SIZE;
-		desc->desc.pnext = (i == count - 1) ?
-		      desc_dma : desc_dma + (i + 1) * sizeof(struct hal2_desc);
-		desc++;
-	}
-	dma_cache_sync(NULL, codec->desc, count * sizeof(struct hal2_desc),
-		       DMA_TO_DEVICE);
-	codec->desc_count = count;
-	return 0;
-}
-
-static void hal2_free_dmabuf(struct hal2_codec *codec)
-{
-	dma_free_noncoherent(NULL, codec->desc_count * sizeof(struct hal2_desc),
-			     codec->desc, codec->desc_dma);
-	dma_free_noncoherent(NULL, H2_BUF_SIZE, codec->buffer,
-			     codec->buffer_dma);
-}
-
-static struct snd_pcm_hardware hal2_pcm_hw = {
-	.info = (SNDRV_PCM_INFO_MMAP |
-		 SNDRV_PCM_INFO_MMAP_VALID |
-		 SNDRV_PCM_INFO_INTERLEAVED |
-		 SNDRV_PCM_INFO_BLOCK_TRANSFER),
-	.formats =          SNDRV_PCM_FMTBIT_S16_BE,
-	.rates =            SNDRV_PCM_RATE_8000_48000,
-	.rate_min =         8000,
-	.rate_max =         48000,
-	.channels_min =     2,
-	.channels_max =     2,
-	.buffer_bytes_max = 65536,
-	.period_bytes_min = 1024,
-	.period_bytes_max = 65536,
-	.periods_min =      2,
-	.periods_max =      1024,
-};
-
-static int hal2_pcm_hw_params(struct snd_pcm_substream *substream,
-			      struct snd_pcm_hw_params *params)
-{
-	int err;
-
-	err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
-	if (err < 0)
-		return err;
-
-	return 0;
-}
-
-static int hal2_pcm_hw_free(struct snd_pcm_substream *substream)
-{
-	return snd_pcm_lib_free_pages(substream);
-}
-
-static int hal2_playback_open(struct snd_pcm_substream *substream)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream);
-	int err;
-
-	runtime->hw = hal2_pcm_hw;
-
-	err = hal2_alloc_dmabuf(&hal2->dac);
-	if (err)
-		return err;
-	return 0;
-}
-
-static int hal2_playback_close(struct snd_pcm_substream *substream)
-{
-	struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream);
-
-	hal2_free_dmabuf(&hal2->dac);
-	return 0;
-}
-
-static int hal2_playback_prepare(struct snd_pcm_substream *substream)
-{
-	struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream);
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct hal2_codec *dac = &hal2->dac;
-
-	dac->voices = runtime->channels;
-	dac->sample_rate = hal2_compute_rate(dac, runtime->rate);
-	memset(&dac->pcm_indirect, 0, sizeof(dac->pcm_indirect));
-	dac->pcm_indirect.hw_buffer_size = H2_BUF_SIZE;
-	dac->pcm_indirect.sw_buffer_size = snd_pcm_lib_buffer_bytes(substream);
-	dac->substream = substream;
-	hal2_setup_dac(hal2);
-	return 0;
-}
-
-static int hal2_playback_trigger(struct snd_pcm_substream *substream, int cmd)
-{
-	struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream);
-
-	switch (cmd) {
-	case SNDRV_PCM_TRIGGER_START:
-		hal2->dac.pcm_indirect.hw_io = hal2->dac.buffer_dma;
-		hal2->dac.pcm_indirect.hw_data = 0;
-		substream->ops->ack(substream);
-		hal2_start_dac(hal2);
-		break;
-	case SNDRV_PCM_TRIGGER_STOP:
-		hal2_stop_dac(hal2);
-		break;
-	default:
-		return -EINVAL;
-	}
-	return 0;
-}
-
-static snd_pcm_uframes_t
-hal2_playback_pointer(struct snd_pcm_substream *substream)
-{
-	struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream);
-	struct hal2_codec *dac = &hal2->dac;
-
-	return snd_pcm_indirect_playback_pointer(substream, &dac->pcm_indirect,
-						 dac->pbus.pbus->pbdma_bptr);
-}
-
-static void hal2_playback_transfer(struct snd_pcm_substream *substream,
-				   struct snd_pcm_indirect *rec, size_t bytes)
-{
-	struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream);
-	unsigned char *buf = hal2->dac.buffer + rec->hw_data;
-
-	memcpy(buf, substream->runtime->dma_area + rec->sw_data, bytes);
-	dma_cache_sync(NULL, buf, bytes, DMA_TO_DEVICE);
-
-}
-
-static int hal2_playback_ack(struct snd_pcm_substream *substream)
-{
-	struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream);
-	struct hal2_codec *dac = &hal2->dac;
-
-	dac->pcm_indirect.hw_queue_size = H2_BUF_SIZE / 2;
-	snd_pcm_indirect_playback_transfer(substream,
-					   &dac->pcm_indirect,
-					   hal2_playback_transfer);
-	return 0;
-}
-
-static int hal2_capture_open(struct snd_pcm_substream *substream)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream);
-	struct hal2_codec *adc = &hal2->adc;
-	int err;
-
-	runtime->hw = hal2_pcm_hw;
-
-	err = hal2_alloc_dmabuf(adc);
-	if (err)
-		return err;
-	return 0;
-}
-
-static int hal2_capture_close(struct snd_pcm_substream *substream)
-{
-	struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream);
-
-	hal2_free_dmabuf(&hal2->adc);
-	return 0;
-}
-
-static int hal2_capture_prepare(struct snd_pcm_substream *substream)
-{
-	struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream);
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct hal2_codec *adc = &hal2->adc;
-
-	adc->voices = runtime->channels;
-	adc->sample_rate = hal2_compute_rate(adc, runtime->rate);
-	memset(&adc->pcm_indirect, 0, sizeof(adc->pcm_indirect));
-	adc->pcm_indirect.hw_buffer_size = H2_BUF_SIZE;
-	adc->pcm_indirect.hw_queue_size = H2_BUF_SIZE / 2;
-	adc->pcm_indirect.sw_buffer_size = snd_pcm_lib_buffer_bytes(substream);
-	adc->substream = substream;
-	hal2_setup_adc(hal2);
-	return 0;
-}
-
-static int hal2_capture_trigger(struct snd_pcm_substream *substream, int cmd)
-{
-	struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream);
-
-	switch (cmd) {
-	case SNDRV_PCM_TRIGGER_START:
-		hal2->adc.pcm_indirect.hw_io = hal2->adc.buffer_dma;
-		hal2->adc.pcm_indirect.hw_data = 0;
-		printk(KERN_DEBUG "buffer_dma %x\n", hal2->adc.buffer_dma);
-		hal2_start_adc(hal2);
-		break;
-	case SNDRV_PCM_TRIGGER_STOP:
-		hal2_stop_adc(hal2);
-		break;
-	default:
-		return -EINVAL;
-	}
-	return 0;
-}
-
-static snd_pcm_uframes_t
-hal2_capture_pointer(struct snd_pcm_substream *substream)
-{
-	struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream);
-	struct hal2_codec *adc = &hal2->adc;
-
-	return snd_pcm_indirect_capture_pointer(substream, &adc->pcm_indirect,
-						adc->pbus.pbus->pbdma_bptr);
-}
-
-static void hal2_capture_transfer(struct snd_pcm_substream *substream,
-				  struct snd_pcm_indirect *rec, size_t bytes)
-{
-	struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream);
-	unsigned char *buf = hal2->adc.buffer + rec->hw_data;
-
-	dma_cache_sync(NULL, buf, bytes, DMA_FROM_DEVICE);
-	memcpy(substream->runtime->dma_area + rec->sw_data, buf, bytes);
-}
-
-static int hal2_capture_ack(struct snd_pcm_substream *substream)
-{
-	struct snd_hal2 *hal2 = snd_pcm_substream_chip(substream);
-	struct hal2_codec *adc = &hal2->adc;
-
-	snd_pcm_indirect_capture_transfer(substream,
-					  &adc->pcm_indirect,
-					  hal2_capture_transfer);
-	return 0;
-}
-
-static struct snd_pcm_ops hal2_playback_ops = {
-	.open =        hal2_playback_open,
-	.close =       hal2_playback_close,
-	.ioctl =       snd_pcm_lib_ioctl,
-	.hw_params =   hal2_pcm_hw_params,
-	.hw_free =     hal2_pcm_hw_free,
-	.prepare =     hal2_playback_prepare,
-	.trigger =     hal2_playback_trigger,
-	.pointer =     hal2_playback_pointer,
-	.ack =         hal2_playback_ack,
-};
-
-static struct snd_pcm_ops hal2_capture_ops = {
-	.open =        hal2_capture_open,
-	.close =       hal2_capture_close,
-	.ioctl =       snd_pcm_lib_ioctl,
-	.hw_params =   hal2_pcm_hw_params,
-	.hw_free =     hal2_pcm_hw_free,
-	.prepare =     hal2_capture_prepare,
-	.trigger =     hal2_capture_trigger,
-	.pointer =     hal2_capture_pointer,
-	.ack =         hal2_capture_ack,
-};
-
-static int __devinit hal2_pcm_create(struct snd_hal2 *hal2)
-{
-	struct snd_pcm *pcm;
-	int err;
-
-	/* create first pcm device with one outputs and one input */
-	err = snd_pcm_new(hal2->card, "SGI HAL2 Audio", 0, 1, 1, &pcm);
-	if (err < 0)
-		return err;
-
-	pcm->private_data = hal2;
-	strcpy(pcm->name, "SGI HAL2");
-
-	/* set operators */
-	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
-			&hal2_playback_ops);
-	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
-			&hal2_capture_ops);
-	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
-					   snd_dma_continuous_data(GFP_KERNEL),
-					   0, 1024 * 1024);
-
-	return 0;
-}
-
-static int hal2_dev_free(struct snd_device *device)
-{
-	struct snd_hal2 *hal2 = device->device_data;
-
-	free_irq(SGI_HPCDMA_IRQ, hal2);
-	kfree(hal2);
-	return 0;
-}
-
-static struct snd_device_ops hal2_ops = {
-	.dev_free = hal2_dev_free,
-};
-
-static void hal2_init_codec(struct hal2_codec *codec, struct hpc3_regs *hpc3,
-			    int index)
-{
-	codec->pbus.pbusnr = index;
-	codec->pbus.pbus = &hpc3->pbdma[index];
-}
-
-static int hal2_detect(struct snd_hal2 *hal2)
-{
-	unsigned short board, major, minor;
-	unsigned short rev;
-
-	/* reset HAL2 */
-	hal2_write(0, &hal2->ctl_regs->isr);
-
-	/* release reset */
-	hal2_write(H2_ISR_GLOBAL_RESET_N | H2_ISR_CODEC_RESET_N,
-		   &hal2->ctl_regs->isr);
-
-
-	hal2_i_write16(hal2, H2I_RELAY_C, H2I_RELAY_C_STATE);
-	rev = hal2_read(&hal2->ctl_regs->rev);
-	if (rev & H2_REV_AUDIO_PRESENT)
-		return -ENODEV;
-
-	board = (rev & H2_REV_BOARD_M) >> 12;
-	major = (rev & H2_REV_MAJOR_CHIP_M) >> 4;
-	minor = (rev & H2_REV_MINOR_CHIP_M);
-
-	printk(KERN_INFO "SGI HAL2 revision %i.%i.%i\n",
-	       board, major, minor);
-
-	return 0;
-}
-
-static int hal2_create(struct snd_card *card, struct snd_hal2 **rchip)
-{
-	struct snd_hal2 *hal2;
-	struct hpc3_regs *hpc3 = hpc3c0;
-	int err;
-
-	hal2 = kzalloc(sizeof(struct snd_hal2), GFP_KERNEL);
-	if (!hal2)
-		return -ENOMEM;
-
-	hal2->card = card;
-
-	if (request_irq(SGI_HPCDMA_IRQ, hal2_interrupt, IRQF_SHARED,
-			"SGI HAL2", hal2)) {
-		printk(KERN_ERR "HAL2: Can't get irq %d\n", SGI_HPCDMA_IRQ);
-		kfree(hal2);
-		return -EAGAIN;
-	}
-
-	hal2->ctl_regs = (struct hal2_ctl_regs *)hpc3->pbus_extregs[0];
-	hal2->aes_regs = (struct hal2_aes_regs *)hpc3->pbus_extregs[1];
-	hal2->vol_regs = (struct hal2_vol_regs *)hpc3->pbus_extregs[2];
-	hal2->syn_regs = (struct hal2_syn_regs *)hpc3->pbus_extregs[3];
-
-	if (hal2_detect(hal2) < 0) {
-		kfree(hal2);
-		return -ENODEV;
-	}
-
-	hal2_init_codec(&hal2->dac, hpc3, 0);
-	hal2_init_codec(&hal2->adc, hpc3, 1);
-
-	/*
-	 * All DMA channel interfaces in HAL2 are designed to operate with
-	 * PBUS programmed for 2 cycles in D3, 2 cycles in D4 and 2 cycles
-	 * in D5. HAL2 is a 16-bit device which can accept both big and little
-	 * endian format. It assumes that even address bytes are on high
-	 * portion of PBUS (15:8) and assumes that HPC3 is programmed to
-	 * accept a live (unsynchronized) version of P_DREQ_N from HAL2.
-	 */
-#define HAL2_PBUS_DMACFG ((0 << HPC3_DMACFG_D3R_SHIFT) | \
-			  (2 << HPC3_DMACFG_D4R_SHIFT) | \
-			  (2 << HPC3_DMACFG_D5R_SHIFT) | \
-			  (0 << HPC3_DMACFG_D3W_SHIFT) | \
-			  (2 << HPC3_DMACFG_D4W_SHIFT) | \
-			  (2 << HPC3_DMACFG_D5W_SHIFT) | \
-				HPC3_DMACFG_DS16 | \
-				HPC3_DMACFG_EVENHI | \
-				HPC3_DMACFG_RTIME | \
-			  (8 << HPC3_DMACFG_BURST_SHIFT) | \
-				HPC3_DMACFG_DRQLIVE)
-	/*
-	 * Ignore what's mentioned in the specification and write value which
-	 * works in The Real World (TM)
-	 */
-	hpc3->pbus_dmacfg[hal2->dac.pbus.pbusnr][0] = 0x8208844;
-	hpc3->pbus_dmacfg[hal2->adc.pbus.pbusnr][0] = 0x8208844;
-
-	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, hal2, &hal2_ops);
-	if (err < 0) {
-		free_irq(SGI_HPCDMA_IRQ, hal2);
-		kfree(hal2);
-		return err;
-	}
-	*rchip = hal2;
-	return 0;
-}
-
-static int __devinit hal2_probe(struct platform_device *pdev)
-{
-	struct snd_card *card;
-	struct snd_hal2 *chip;
-	int err;
-
-	err = snd_card_create(index, id, THIS_MODULE, 0, &card);
-	if (err < 0)
-		return err;
-
-	err = hal2_create(card, &chip);
-	if (err < 0) {
-		snd_card_free(card);
-		return err;
-	}
-	snd_card_set_dev(card, &pdev->dev);
-
-	err = hal2_pcm_create(chip);
-	if (err < 0) {
-		snd_card_free(card);
-		return err;
-	}
-	err = hal2_mixer_create(chip);
-	if (err < 0) {
-		snd_card_free(card);
-		return err;
-	}
-
-	strcpy(card->driver, "SGI HAL2 Audio");
-	strcpy(card->shortname, "SGI HAL2 Audio");
-	sprintf(card->longname, "%s irq %i",
-		card->shortname,
-		SGI_HPCDMA_IRQ);
-
-	err = snd_card_register(card);
-	if (err < 0) {
-		snd_card_free(card);
-		return err;
-	}
-	platform_set_drvdata(pdev, card);
-	return 0;
-}
-
-static int __devexit hal2_remove(struct platform_device *pdev)
-{
-	struct snd_card *card = platform_get_drvdata(pdev);
-
-	snd_card_free(card);
-	platform_set_drvdata(pdev, NULL);
-	return 0;
-}
-
-static struct platform_driver hal2_driver = {
-	.probe	= hal2_probe,
-	.remove	= __devexit_p(hal2_remove),
-	.driver = {
-		.name	= "sgihal2",
-		.owner	= THIS_MODULE,
-	}
-};
-
-module_platform_driver(hal2_driver);