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-rw-r--r--packages/linux/linux-2.6.18/atmel-ac97c-alsa-driver.patch1383
1 files changed, 1383 insertions, 0 deletions
diff --git a/packages/linux/linux-2.6.18/atmel-ac97c-alsa-driver.patch b/packages/linux/linux-2.6.18/atmel-ac97c-alsa-driver.patch
new file mode 100644
index 0000000000..fe3d2ee209
--- /dev/null
+++ b/packages/linux/linux-2.6.18/atmel-ac97c-alsa-driver.patch
@@ -0,0 +1,1383 @@
+---
+ sound/avr32/Kconfig | 25 +
+ sound/avr32/Makefile | 3
+ sound/avr32/ac97c.c | 1250 +++++++++++++++++++++++++++++++++++++++++++++++++++
+ sound/avr32/ac97c.h | 71 ++
+ 4 files changed, 1349 insertions(+)
+
+Index: linux-2.6.18-avr32/sound/avr32/Kconfig
+===================================================================
+--- linux-2.6.18-avr32.orig/sound/avr32/Kconfig 2006-11-02 15:56:20.000000000 +0100
++++ linux-2.6.18-avr32/sound/avr32/Kconfig 2006-11-02 16:02:29.000000000 +0100
+@@ -3,4 +3,29 @@
+ menu "ALSA AVR32 devices"
+ depends on SND != n && AVR32
+
++config SND_ATMEL_AC97
++ tristate "Atmel AC97 Controller Driver"
++ depends on SND
++ select SND_PCM
++ select SND_AC97_CODEC
++ help
++ ALSA sound driver for the Atmel AC97 controller.
++
++config SND_ATMEL_AC97_USE_ALSA_MALLOC_CALLS
++ bool "Use the built-in malloc calls in the alsa driver"
++ default n
++ depends on SND_ATMEL_AC97
++ help
++ Say Y if the built-in malloc calls in the alsa driver should be
++ used instead of the native dma_alloc_coherent and dma_free_coherent
++ function calls. Enabling this feature may break the rmmod feature.
++
++config SND_ATMEL_AC97C_USE_PDC
++ bool "Use PDC for DMA transfers to/from the Atmel AC97 Controller"
++ default n
++ depends on SND_ATMEL_AC97
++ help
++ Say Y if PDC (Peripheral DMA Controller) is used for DMA transfers
++ to/from the Atmel AC97C instead of using the generic DMA framework.
++
+ endmenu
+Index: linux-2.6.18-avr32/sound/avr32/Makefile
+===================================================================
+--- linux-2.6.18-avr32.orig/sound/avr32/Makefile 2006-11-02 15:56:20.000000000 +0100
++++ linux-2.6.18-avr32/sound/avr32/Makefile 2006-11-02 16:02:29.000000000 +0100
+@@ -1,3 +1,6 @@
+ #
+ # Makefile for ALSA
+ #
++
++snd-atmel-ac97-objs := ac97c.o
++obj-$(CONFIG_SND_ATMEL_AC97) += snd-atmel-ac97.o
+Index: linux-2.6.18-avr32/sound/avr32/ac97c.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.18-avr32/sound/avr32/ac97c.c 2006-11-02 16:02:56.000000000 +0100
+@@ -0,0 +1,1250 @@
++/*
++ * Driver for the Atmel AC97 Controller
++ *
++ * Copyright (C) 2005-2006 Atmel Corporation
++ *
++ * 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.
++ */
++#include <linux/clk.h>
++#include <linux/delay.h>
++#include <linux/dma-mapping.h>
++#include <linux/init.h>
++#include <linux/interrupt.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/mutex.h>
++
++#include <sound/driver.h>
++#include <sound/core.h>
++#include <sound/initval.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/ac97_codec.h>
++#ifndef SND_ATMEL_AC97_USE_ALSA_MALLOC_CALLS
++#include <sound/memalloc.h>
++#endif
++
++#include <asm/io.h>
++
++#include "ac97c.h"
++
++static DEFINE_MUTEX(opened_mutex);
++
++/* module parameters */
++static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
++static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
++static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
++
++module_param_array(index, int, NULL, 0444);
++MODULE_PARM_DESC(index, "Index value for AC97 controller");
++module_param_array(id, charp, NULL, 0444);
++MODULE_PARM_DESC(id, "ID string for AC97 controller");
++module_param_array(enable, bool, NULL, 0444);
++MODULE_PARM_DESC(enable, "Enable AC97 controller");
++
++#ifndef CONFIG_SND_ATMEL_AC97C_USE_PDC
++#include <asm/dma-controller.h>
++
++struct atmel_ac97_dma_info {
++ struct dma_request_cyclic req_tx;
++ struct dma_request_cyclic req_rx;
++ unsigned short rx_periph_id;
++ unsigned short tx_periph_id;
++};
++#endif
++
++
++typedef struct atmel_ac97 {
++ spinlock_t lock;
++ void __iomem *regs;
++ int period;
++
++ snd_pcm_substream_t *playback_substream;
++ snd_pcm_substream_t *capture_substream;
++ snd_card_t *card;
++ snd_pcm_t *pcm;
++ ac97_t *ac97;
++ ac97_bus_t *ac97_bus;
++ int irq;
++ int opened;
++ u64 cur_format;
++ unsigned int cur_rate;
++ struct clk *mck;
++ struct platform_device *pdev;
++ struct atmel_ac97_dma_info dma;
++} atmel_ac97_t;
++#define get_chip(card) ((atmel_ac97_t *)(card)->private_data)
++
++#define ac97c_writel(chip, reg, val) \
++ __raw_writel((val), (chip)->regs + AC97C_##reg)
++#define ac97c_readl(chip, reg) \
++ __raw_readl((chip)->regs + AC97C_##reg)
++
++/* PCM part */
++
++static snd_pcm_hardware_t snd_atmel_ac97_playback_hw = {
++ .info = (SNDRV_PCM_INFO_INTERLEAVED
++ |SNDRV_PCM_INFO_MMAP
++ |SNDRV_PCM_INFO_MMAP_VALID
++ |SNDRV_PCM_INFO_BLOCK_TRANSFER
++ |SNDRV_PCM_INFO_JOINT_DUPLEX),
++ .formats = (SNDRV_PCM_FMTBIT_S16_BE|SNDRV_PCM_FMTBIT_S16_LE),
++ .rates = (SNDRV_PCM_RATE_CONTINUOUS),
++ .rate_min = 4000,
++ .rate_max = 48000,
++ .channels_min = 1,
++ .channels_max = 6,
++ .buffer_bytes_max = 64*1024,
++ .period_bytes_min = 512,
++#ifdef CONFIG_SND_ATMEL_AC97C_USE_PDC
++ .period_bytes_max = 64*1024,
++#else
++ .period_bytes_max = 4095,
++#endif
++ .periods_min = 8,
++ .periods_max = 1024,
++};
++
++static snd_pcm_hardware_t snd_atmel_ac97_capture_hw = {
++ .info = (SNDRV_PCM_INFO_INTERLEAVED
++ |SNDRV_PCM_INFO_MMAP
++ |SNDRV_PCM_INFO_MMAP_VALID
++ |SNDRV_PCM_INFO_BLOCK_TRANSFER
++ |SNDRV_PCM_INFO_JOINT_DUPLEX),
++ .formats = (SNDRV_PCM_FMTBIT_S16_BE|SNDRV_PCM_FMTBIT_S16_LE),
++ .rates = (SNDRV_PCM_RATE_CONTINUOUS),
++ .rate_min = 4000,
++ .rate_max = 48000,
++ .channels_min = 1,
++ .channels_max = 2,
++ .buffer_bytes_max = 64*1024,
++ .period_bytes_min = 512,
++#ifdef CONFIG_SND_ATMEL_AC97C_USE_PDC
++ .period_bytes_max = 64*1024,
++#else
++ .period_bytes_max = 4095,
++#endif
++ .periods_min = 8,
++ .periods_max = 1024,
++};
++
++/* Joint full duplex variables */
++unsigned int hw_rates[1];
++unsigned int hw_formats[1];
++struct snd_pcm_hw_constraint_list hw_constraint_rates;
++struct snd_pcm_hw_constraint_list hw_constraint_formats;
++
++/*
++ * PCM functions
++ */
++static int
++snd_atmel_ac97_playback_open(snd_pcm_substream_t *substream)
++{
++ atmel_ac97_t *chip = snd_pcm_substream_chip(substream);
++ snd_pcm_runtime_t *runtime = substream->runtime;
++
++ mutex_lock(&opened_mutex);
++ chip->opened++;
++ runtime->hw = snd_atmel_ac97_playback_hw;
++ if (chip->cur_rate) {
++ runtime->hw.rate_min = chip->cur_rate;
++ runtime->hw.rate_max = chip->cur_rate;
++ }
++ if (chip->cur_format)
++ runtime->hw.formats = (1ULL<<chip->cur_format);
++ mutex_unlock(&opened_mutex);
++ chip->playback_substream = substream;
++ chip->period = 0;
++ return 0;
++}
++
++static int
++snd_atmel_ac97_capture_open(snd_pcm_substream_t *substream)
++{
++ atmel_ac97_t *chip = snd_pcm_substream_chip(substream);
++ snd_pcm_runtime_t *runtime = substream->runtime;
++
++ mutex_lock(&opened_mutex);
++ chip->opened++;
++ runtime->hw = snd_atmel_ac97_capture_hw;
++ if (chip->cur_rate) {
++ runtime->hw.rate_min = chip->cur_rate;
++ runtime->hw.rate_max = chip->cur_rate;
++ }
++ if (chip->cur_format)
++ runtime->hw.formats = (1ULL<<chip->cur_format);
++ mutex_unlock(&opened_mutex);
++ chip->capture_substream = substream;
++ chip->period = 0;
++ return 0;
++}
++
++static int snd_atmel_ac97_playback_close(snd_pcm_substream_t *substream)
++{
++ atmel_ac97_t *chip = snd_pcm_substream_chip(substream);
++ mutex_lock(&opened_mutex);
++ chip->opened--;
++ if (!chip->opened) {
++ chip->cur_rate = 0;
++ chip->cur_format = 0;
++ }
++ mutex_unlock(&opened_mutex);
++ return 0;
++}
++
++static int snd_atmel_ac97_capture_close(snd_pcm_substream_t *substream)
++{
++ atmel_ac97_t *chip = snd_pcm_substream_chip(substream);
++ mutex_lock(&opened_mutex);
++ chip->opened--;
++ if (!chip->opened) {
++ chip->cur_rate = 0;
++ chip->cur_format = 0;
++ }
++ mutex_unlock(&opened_mutex);
++ return 0;
++}
++
++static int snd_atmel_ac97_playback_hw_params(snd_pcm_substream_t *substream,
++ snd_pcm_hw_params_t *hw_params)
++{
++ atmel_ac97_t *chip = snd_pcm_substream_chip(substream);
++#ifdef SND_ATMEL_AC97_USE_ALSA_MALLOC_CALLS
++ int err;
++ err = snd_pcm_lib_malloc_pages(substream,
++ params_buffer_bytes(hw_params));
++
++ if (err < 0)
++ return err;
++
++ /* Set restrictions to params */
++ mutex_lock(&opened_mutex);
++ chip->cur_rate = params_rate(hw_params);
++ chip->cur_format = params_format(hw_params);
++ mutex_unlock(&opened_mutex);
++
++ return err;
++#else
++ int pg;
++ size_t size = params_buffer_bytes(hw_params);
++ struct snd_pcm_runtime *runtime;
++ struct snd_dma_buffer *dmab = NULL;
++
++ substream->dma_buffer.dev.type = SNDRV_DMA_TYPE_DEV;
++ snd_assert(substream != NULL, return -EINVAL);
++ runtime = substream->runtime;
++ snd_assert(runtime != NULL, return -EINVAL);
++
++ /* Set restrictions to params */
++ mutex_lock(&opened_mutex);
++ chip->cur_rate = params_rate(hw_params);
++ chip->cur_format = params_format(hw_params);
++ mutex_unlock(&opened_mutex);
++
++ /* check if buffer is already allocated */
++ if (runtime->dma_buffer_p) {
++ size_t size_previouse;
++ int pg_previouse;
++
++ /* new buffer is smaler than previouse allocated buffer */
++ if (runtime->dma_buffer_p->bytes >= size) {
++ runtime->dma_bytes = size;
++ return 0; /* don't change buffer size */
++ }
++
++ size_previouse = runtime->dma_buffer_p->bytes;
++ pg_previouse = get_order(size_previouse);
++
++ dma_free_coherent(runtime->dma_buffer_p->dev.dev,
++ PAGE_SIZE << pg_previouse,
++ runtime->dma_buffer_p->area,
++ runtime->dma_buffer_p->addr);
++
++ kfree(runtime->dma_buffer_p);
++ }
++
++ dmab = kzalloc(sizeof(*dmab), GFP_KERNEL);
++ if (!dmab)
++ return -ENOMEM;
++
++ dmab->dev = substream->dma_buffer.dev;
++ dmab->bytes = 0;
++
++ pg = get_order(size);
++
++ dmab->area = dma_alloc_coherent(
++ substream->dma_buffer.dev.dev,
++ PAGE_SIZE << pg,
++ (dma_addr_t *)&dmab->addr,
++ GFP_KERNEL);
++
++ if (!dmab->area) {
++ kfree(dmab);
++ return -ENOMEM;
++ }
++
++ dmab->bytes = size;
++
++ snd_pcm_set_runtime_buffer(substream, dmab);
++ runtime->dma_bytes = size;
++ return 1;
++#endif
++}
++
++static int snd_atmel_ac97_capture_hw_params(snd_pcm_substream_t *substream,
++ snd_pcm_hw_params_t *hw_params)
++{
++ atmel_ac97_t *chip = snd_pcm_substream_chip(substream);
++#ifdef SND_ATMEL_AC97_USE_ALSA_MALLOC_CALLS
++ int err;
++ err = snd_pcm_lib_malloc_pages(substream,
++ params_buffer_bytes(hw_params));
++
++ if (err < 0)
++ return err;
++
++ /* Set restrictions to params */
++ mutex_lock(&opened_mutex);
++ chip->cur_rate = params_rate(hw_params);
++ chip->cur_format = params_format(hw_params);
++ mutex_unlock(&opened_mutex);
++
++ return err;
++#else
++ int pg;
++ size_t size = params_buffer_bytes(hw_params);
++ struct snd_pcm_runtime *runtime;
++ struct snd_dma_buffer *dmab = NULL;
++
++ substream->dma_buffer.dev.type = SNDRV_DMA_TYPE_DEV;
++ snd_assert(substream != NULL, return -EINVAL);
++ runtime = substream->runtime;
++ snd_assert(runtime != NULL, return -EINVAL);
++
++ /* Set restrictions to params */
++ mutex_lock(&opened_mutex);
++ chip->cur_rate = params_rate(hw_params);
++ chip->cur_format = params_format(hw_params);
++ mutex_unlock(&opened_mutex);
++
++ /* check if buffer is already allocated */
++ if (runtime->dma_buffer_p) {
++ size_t size_previouse;
++ int pg_previouse;
++
++ /* new buffer is smaler than previouse allocated buffer */
++ if (runtime->dma_buffer_p->bytes >= size) {
++ runtime->dma_bytes = size;
++ return 0; /* don't change buffer size */
++ }
++
++ size_previouse = runtime->dma_buffer_p->bytes;
++ pg_previouse = get_order(size_previouse);
++
++ dma_free_coherent(runtime->dma_buffer_p->dev.dev,
++ PAGE_SIZE << pg_previouse,
++ runtime->dma_buffer_p->area,
++ runtime->dma_buffer_p->addr);
++
++ kfree(runtime->dma_buffer_p);
++ }
++
++ dmab = kzalloc(sizeof(*dmab), GFP_KERNEL);
++ if (!dmab)
++ return -ENOMEM;
++
++ dmab->dev = substream->dma_buffer.dev;
++ dmab->bytes = 0;
++
++ pg = get_order(size);
++
++ dmab->area = dma_alloc_coherent(
++ substream->dma_buffer.dev.dev,
++ PAGE_SIZE << pg,
++ (dma_addr_t *)&dmab->addr,
++ GFP_KERNEL);
++
++ if (!dmab->area) {
++ kfree(dmab);
++ return -ENOMEM;
++ }
++
++ dmab->bytes = size;
++
++ snd_pcm_set_runtime_buffer(substream, dmab);
++ runtime->dma_bytes = size;
++ return 1;
++#endif
++}
++
++static int snd_atmel_ac97_playback_hw_free(snd_pcm_substream_t *substream)
++{
++#ifdef SND_ATMEL_AC97_USE_ALSA_MALLOC_CALLS
++ return snd_pcm_lib_free_pages(substream);
++#else
++ int pg;
++ struct snd_pcm_runtime *runtime;
++ struct snd_dma_buffer *dmab = NULL;
++
++ snd_assert(substream != NULL, return -EINVAL);
++ runtime = substream->runtime;
++ snd_assert(runtime != NULL, return -EINVAL);
++ dmab = runtime->dma_buffer_p;
++
++ if (!dmab)
++ return 0;
++
++ if (!dmab->area)
++ return 0;
++
++ pg = get_order(dmab->bytes);
++ dma_free_coherent(dmab->dev.dev, PAGE_SIZE << pg, dmab->area, dmab->addr);
++ kfree(runtime->dma_buffer_p);
++ snd_pcm_set_runtime_buffer(substream, NULL);
++ return 0;
++#endif
++}
++
++static int snd_atmel_ac97_capture_hw_free(snd_pcm_substream_t *substream)
++{
++
++#ifdef SND_ATMEL_AC97_USE_ALSA_MALLOC_CALLS
++ return snd_pcm_lib_free_pages(substream);
++#else
++ int pg;
++ struct snd_pcm_runtime *runtime;
++ struct snd_dma_buffer *dmab = NULL;
++
++ snd_assert(substream != NULL, return -EINVAL);
++ runtime = substream->runtime;
++ snd_assert(runtime != NULL, return -EINVAL);
++ dmab = runtime->dma_buffer_p;
++
++ if (!dmab)
++ return 0;
++
++ if (!dmab->area)
++ return 0;
++
++ pg = get_order(dmab->bytes);
++ dma_free_coherent(dmab->dev.dev, PAGE_SIZE << pg, dmab->area, dmab->addr);
++ kfree(runtime->dma_buffer_p);
++ snd_pcm_set_runtime_buffer(substream, NULL);
++ return 0;
++#endif
++}
++
++static int snd_atmel_ac97_playback_prepare(snd_pcm_substream_t *substream)
++{
++ atmel_ac97_t *chip = snd_pcm_substream_chip(substream);
++ struct platform_device *pdev = chip->pdev;
++ snd_pcm_runtime_t *runtime = substream->runtime;
++ int block_size = frames_to_bytes(runtime, runtime->period_size);
++ unsigned long word = 0;
++ unsigned long buffer_size = 0;
++
++ dma_sync_single_for_device(&pdev->dev, runtime->dma_addr,
++ block_size * 2, DMA_TO_DEVICE);
++
++ /* Assign slots to channels */
++ switch (substream->runtime->channels) {
++ case 1:
++ word |= AC97C_CH_ASSIGN(PCM_LEFT, A);
++ break;
++ case 2:
++ /* Assign Left and Right slot to Channel A */
++ word |= AC97C_CH_ASSIGN(PCM_LEFT, A)
++ | AC97C_CH_ASSIGN(PCM_RIGHT, A);
++ break;
++ default:
++ /* TODO: support more than two channels */
++ return -EINVAL;
++ break;
++ }
++ ac97c_writel(chip, OCA, word);
++
++ /* Configure sample format and size */
++ word = AC97C_CMR_PDCEN | AC97C_CMR_SIZE_16;
++
++ switch (runtime->format){
++ case SNDRV_PCM_FORMAT_S16_LE:
++ word |= AC97C_CMR_CEM_LITTLE;
++ break;
++ case SNDRV_PCM_FORMAT_S16_BE:
++ default:
++ word &= ~AC97C_CMR_CEM_LITTLE;
++ break;
++ }
++
++ ac97c_writel(chip, CAMR, word);
++
++ /* Set variable rate if needed */
++ if (runtime->rate != 48000) {
++ word = ac97c_readl(chip, MR);
++ word |= AC97C_MR_VRA;
++ ac97c_writel(chip, MR, word);
++ } else {
++ /* Clear Variable Rate Bit */
++ word = ac97c_readl(chip, MR);
++ word &= ~AC97C_MR_VRA;
++ ac97c_writel(chip, MR, word);
++ }
++
++ /* Set rate */
++ snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
++
++#ifdef CONFIG_SND_ATMEL_AC97C_USE_PDC
++ /* Initialize and start the PDC */
++ ac97c_writel(chip, CATPR, runtime->dma_addr);
++ ac97c_writel(chip, CATCR, block_size / 4);
++ ac97c_writel(chip, CATNPR, runtime->dma_addr + block_size);
++ ac97c_writel(chip, CATNCR, block_size / 4);
++ ac97c_writel(chip, PTCR, PDC_PTCR_TXTEN);
++ /* Enable Channel A interrupts */
++ ac97c_writel(chip, IER, AC97C_SR_CAEVT);
++#else
++ buffer_size = frames_to_bytes(runtime, runtime->period_size) *
++ runtime->periods;
++
++ chip->dma.req_tx.buffer_size = buffer_size;
++ chip->dma.req_tx.periods = runtime->periods;
++
++ BUG_ON(chip->dma.req_tx.buffer_size !=
++ (chip->dma.req_tx.periods *
++ frames_to_bytes(runtime, runtime->period_size)));
++
++ chip->dma.req_tx.buffer_start = runtime->dma_addr;
++ chip->dma.req_tx.data_reg = (dma_addr_t)(chip->regs + AC97C_CATHR + 2);
++ chip->dma.req_tx.periph_id = chip->dma.tx_periph_id;
++ chip->dma.req_tx.direction = DMA_DIR_MEM_TO_PERIPH;
++ chip->dma.req_tx.width = DMA_WIDTH_16BIT;
++ chip->dma.req_tx.dev_id = chip;
++#endif
++
++ return 0;
++}
++
++static int snd_atmel_ac97_capture_prepare(snd_pcm_substream_t *substream)
++{
++ atmel_ac97_t *chip = snd_pcm_substream_chip(substream);
++ struct platform_device *pdev = chip->pdev;
++ snd_pcm_runtime_t *runtime = substream->runtime;
++ int block_size = frames_to_bytes(runtime, runtime->period_size);
++ unsigned long word = 0;
++ unsigned long buffer_size = 0;
++
++ dma_sync_single_for_device(&pdev->dev, runtime->dma_addr,
++ block_size * 2, DMA_FROM_DEVICE);
++
++ /* Assign slots to channels */
++ switch (substream->runtime->channels) {
++ case 1:
++ word |= AC97C_CH_ASSIGN(PCM_LEFT, A);
++ break;
++ case 2:
++ /* Assign Left and Right slot to Channel A */
++ word |= AC97C_CH_ASSIGN(PCM_LEFT, A)
++ | AC97C_CH_ASSIGN(PCM_RIGHT, A);
++ break;
++ default:
++ /* TODO: support more than two channels */
++ return -EINVAL;
++ break;
++ }
++ ac97c_writel(chip, ICA, word);
++
++ /* Configure sample format and size */
++ word = AC97C_CMR_PDCEN | AC97C_CMR_SIZE_16;
++
++ switch (runtime->format) {
++ case SNDRV_PCM_FORMAT_S16_LE:
++ word |= AC97C_CMR_CEM_LITTLE;
++ break;
++ case SNDRV_PCM_FORMAT_S16_BE:
++ default:
++ word &= ~(AC97C_CMR_CEM_LITTLE);
++ break;
++ }
++
++ ac97c_writel(chip, CAMR, word);
++
++ /* Set variable rate if needed */
++ if (runtime->rate != 48000) {
++ word = ac97c_readl(chip, MR);
++ word |= AC97C_MR_VRA;
++ ac97c_writel(chip, MR, word);
++ } else {
++ /* Clear Variable Rate Bit */
++ word = ac97c_readl(chip, MR);
++ word &= ~(AC97C_MR_VRA);
++ ac97c_writel(chip, MR, word);
++ }
++
++ /* Set rate */
++ snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
++
++#ifdef CONFIG_SND_ATMEL_AC97C_USE_PDC
++ /* Initialize and start the PDC */
++ ac97c_writel(chip, CARPR, runtime->dma_addr);
++ ac97c_writel(chip, CARCR, block_size / 4);
++ ac97c_writel(chip, CARNPR, runtime->dma_addr + block_size);
++ ac97c_writel(chip, CARNCR, block_size / 4);
++ ac97c_writel(chip, PTCR, PDC_PTCR_RXEN);
++ /* Enable Channel A interrupts */
++ ac97c_writel(chip, IER, AC97C_SR_CAEVT);
++#else
++ buffer_size = frames_to_bytes(runtime, runtime->period_size) *
++ runtime->periods;
++
++ chip->dma.req_rx.buffer_size = buffer_size;
++ chip->dma.req_rx.periods = runtime->periods;
++
++ BUG_ON(chip->dma.req_rx.buffer_size !=
++ (chip->dma.req_rx.periods *
++ frames_to_bytes(runtime, runtime->period_size)));
++
++ chip->dma.req_rx.buffer_start = runtime->dma_addr;
++ chip->dma.req_rx.data_reg = (dma_addr_t)(chip->regs + AC97C_CARHR + 2);
++ chip->dma.req_rx.periph_id = chip->dma.rx_periph_id;
++ chip->dma.req_rx.direction = DMA_DIR_PERIPH_TO_MEM;
++ chip->dma.req_rx.width = DMA_WIDTH_16BIT;
++ chip->dma.req_rx.dev_id = chip;
++#endif
++
++ return 0;
++}
++
++static int snd_atmel_ac97_playback_trigger(snd_pcm_substream_t *substream, int cmd)
++{
++ atmel_ac97_t *chip = snd_pcm_substream_chip(substream);
++ unsigned long camr;
++ int flags, err = 0;
++
++ spin_lock_irqsave(&chip->lock, flags);
++ camr = ac97c_readl(chip, CAMR);
++
++ switch (cmd) {
++ case SNDRV_PCM_TRIGGER_START:
++ err = dma_prepare_request_cyclic(chip->dma.req_tx.req.dmac,
++ &chip->dma.req_tx);
++ dma_start_request(chip->dma.req_tx.req.dmac,
++ chip->dma.req_tx.req.channel);
++ camr |= (AC97C_CMR_CENA
++#ifdef CONFIG_SND_ATMEL_AC97C_USE_PDC
++ |AC97C_CMR_TXRDY
++#endif
++ );
++ break;
++ case SNDRV_PCM_TRIGGER_STOP:
++ err = dma_stop_request(chip->dma.req_tx.req.dmac,
++ chip->dma.req_tx.req.channel);
++ if (chip->opened <= 1) {
++ camr &= ~(AC97C_CMR_CENA
++#ifdef CONFIG_SND_ATMEL_AC97C_USE_PDC
++ |AC97C_CMR_TXRDY
++#endif
++ );
++ }
++#ifdef CONFIG_SND_ATMEL_AC97C_USE_PDC
++ else {
++ camr &= ~(AC97C_CMR_TXRDY);
++ }
++#endif
++ break;
++ default:
++ err = -EINVAL;
++ break;
++ }
++
++ ac97c_writel(chip, CAMR, camr);
++
++ spin_unlock_irqrestore(&chip->lock, flags);
++ return err;
++}
++
++static int snd_atmel_ac97_capture_trigger(snd_pcm_substream_t *substream, int cmd)
++{
++ atmel_ac97_t *chip = snd_pcm_substream_chip(substream);
++ unsigned long camr;
++ int flags, err = 0;
++
++ spin_lock_irqsave(&chip->lock, flags);
++ camr = ac97c_readl(chip, CAMR);
++
++ switch (cmd) {
++ case SNDRV_PCM_TRIGGER_START:
++ err = dma_prepare_request_cyclic(chip->dma.req_rx.req.dmac,
++ &chip->dma.req_rx);
++ dma_start_request(chip->dma.req_rx.req.dmac,
++ chip->dma.req_rx.req.channel);
++ camr |= (AC97C_CMR_CENA
++#ifdef CONFIG_SND_ATMEL_AC97C_USE_PDC
++ | AC97C_CMR_RXRDY
++#endif
++ );
++ break;
++ case SNDRV_PCM_TRIGGER_STOP:
++ err = dma_stop_request(chip->dma.req_rx.req.dmac,
++ chip->dma.req_rx.req.channel);
++ mutex_lock(&opened_mutex);
++ if (chip->opened <= 1) {
++ camr &= ~(AC97C_CMR_CENA
++#ifdef CONFIG_SND_ATMEL_AC97C_USE_PDC
++ | AC97C_CMR_RXRDY
++#endif
++ );
++ }
++#ifdef CONFIG_SND_ATMEL_AC97C_USE_PDC
++ else {
++ camr &= ~(AC97C_CSR_RXRDY);
++ }
++#endif
++ mutex_unlock(&opened_mutex);
++ break;
++ default:
++ err = -EINVAL;
++ break;
++ }
++
++ ac97c_writel(chip, CAMR, camr);
++
++ spin_unlock_irqrestore(&chip->lock, flags);
++ return err;
++}
++
++static snd_pcm_uframes_t snd_atmel_ac97_playback_pointer(snd_pcm_substream_t *substream)
++{
++ atmel_ac97_t *chip = snd_pcm_substream_chip(substream);
++ snd_pcm_runtime_t *runtime = substream->runtime;
++ snd_pcm_uframes_t pos;
++ unsigned long bytes;
++
++#ifdef CONFIG_SND_ATMEL_AC97C_USE_PDC
++ bytes = ac97c_readl(chip, CATPR) - runtime->dma_addr;
++#else
++ bytes = (dma_get_current_pos
++ (chip->dma.req_tx.req.dmac,
++ chip->dma.req_tx.req.channel) - runtime->dma_addr);
++#endif
++ pos = bytes_to_frames(runtime, bytes);
++ if (pos >= runtime->buffer_size)
++ pos -= runtime->buffer_size;
++
++ return pos;
++}
++
++static snd_pcm_uframes_t snd_atmel_ac97_capture_pointer(snd_pcm_substream_t *substream)
++{
++ atmel_ac97_t *chip = snd_pcm_substream_chip(substream);
++ snd_pcm_runtime_t *runtime = substream->runtime;
++ snd_pcm_uframes_t pos;
++ unsigned long bytes;
++
++#ifdef CONFIG_SND_ATMEL_AC97C_USE_PDC
++ bytes = ac97c_readl(chip, CARPR) - runtime->dma_addr;
++#else
++ bytes = (dma_get_current_pos
++ (chip->dma.req_rx.req.dmac,chip->dma.req_rx.req.channel) -
++ runtime->dma_addr);
++#endif
++ pos = bytes_to_frames(runtime, bytes);
++ if (pos >= runtime->buffer_size)
++ pos -= runtime->buffer_size;
++
++
++ return pos;
++}
++
++static snd_pcm_ops_t atmel_ac97_playback_ops = {
++ .open = snd_atmel_ac97_playback_open,
++ .close = snd_atmel_ac97_playback_close,
++ .ioctl = snd_pcm_lib_ioctl,
++ .hw_params = snd_atmel_ac97_playback_hw_params,
++ .hw_free = snd_atmel_ac97_playback_hw_free,
++ .prepare = snd_atmel_ac97_playback_prepare,
++ .trigger = snd_atmel_ac97_playback_trigger,
++ .pointer = snd_atmel_ac97_playback_pointer,
++};
++
++static snd_pcm_ops_t atmel_ac97_capture_ops = {
++ .open = snd_atmel_ac97_capture_open,
++ .close = snd_atmel_ac97_capture_close,
++ .ioctl = snd_pcm_lib_ioctl,
++ .hw_params = snd_atmel_ac97_capture_hw_params,
++ .hw_free = snd_atmel_ac97_capture_hw_free,
++ .prepare = snd_atmel_ac97_capture_prepare,
++ .trigger = snd_atmel_ac97_capture_trigger,
++ .pointer = snd_atmel_ac97_capture_pointer,
++};
++
++static struct ac97_pcm atmel_ac97_pcm_defs[] __devinitdata = {
++ /* Playback */
++ {
++ .exclusive = 1,
++ .r = { {
++ .slots = ((1 << AC97_SLOT_PCM_LEFT)
++ | (1 << AC97_SLOT_PCM_RIGHT)
++ | (1 << AC97_SLOT_PCM_CENTER)
++ | (1 << AC97_SLOT_PCM_SLEFT)
++ | (1 << AC97_SLOT_PCM_SRIGHT)
++ | (1 << AC97_SLOT_LFE)),
++ } }
++ },
++ /* PCM in */
++ {
++ .stream = 1,
++ .exclusive = 1,
++ .r = { {
++ .slots = ((1 << AC97_SLOT_PCM_LEFT)
++ | (1 << AC97_SLOT_PCM_RIGHT)),
++ } }
++ },
++ /* Mic in */
++ {
++ .stream = 1,
++ .exclusive = 1,
++ .r = { {
++ .slots = (1<<AC97_SLOT_MIC),
++ } }
++ },
++};
++
++static int __devinit snd_atmel_ac97_pcm_new(atmel_ac97_t *chip)
++{
++ snd_pcm_t *pcm;
++ int err;
++
++ err = snd_ac97_pcm_assign(chip->ac97_bus,
++ ARRAY_SIZE(atmel_ac97_pcm_defs),
++ atmel_ac97_pcm_defs);
++ if (err)
++ return err;
++
++ err = snd_pcm_new(chip->card, "Atmel-AC97", 0, 1, 1, &pcm);
++ if (err)
++ return err;
++
++ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
++ &atmel_ac97_playback_ops);
++
++ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
++ &atmel_ac97_capture_ops);
++
++#ifdef SND_ATMEL_AC97_USE_ALSA_MALLOC_CALLS
++ snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
++ &chip->pdev->dev,
++ 128 * 1024, 128 * 1024);
++#endif
++
++ pcm->private_data = chip;
++ pcm->info_flags = 0;
++ strcpy(pcm->name, "Atmel-AC97");
++ chip->pcm = pcm;
++
++ return 0;
++}
++
++/* Mixer part */
++static int snd_atmel_ac97_mixer_new(atmel_ac97_t *chip)
++{
++ int err;
++ ac97_template_t template;
++
++ memset(&template, 0, sizeof(template));
++ template.private_data = chip;
++ err = snd_ac97_mixer(chip->ac97_bus, &template, &chip->ac97);
++
++ return err;
++}
++
++#ifdef CONFIG_SND_ATMEL_AC97C_USE_PDC
++static irqreturn_t snd_atmel_ac97_interrupt(int irq, void *dev_id,
++ struct pt_regs *regs)
++{
++ atmel_ac97_t *chip = dev_id;
++ unsigned long status;
++
++ status = ac97c_readl(chip, SR);
++
++ if (status & AC97C_SR_CAEVT) {
++ snd_pcm_runtime_t *runtime;
++ int offset, next_period, block_size;
++ unsigned long casr;
++
++ /* FIXME: separate playback from capture */
++ runtime = chip->playback_substream->runtime;
++ block_size = frames_to_bytes(runtime, runtime->period_size);
++
++ casr = ac97c_readl(chip, CASR);
++
++ if (casr & AC97C_CSR_ENDTX) {
++ chip->period++;
++ if (chip->period == runtime->periods)
++ chip->period = 0;
++ next_period = chip->period + 1;
++ if (next_period == runtime->periods)
++ next_period = 0;
++
++ offset = block_size * next_period;
++
++ ac97c_writel(chip, CATNPR,
++ runtime->dma_addr + offset);
++ ac97c_writel(chip, CATNCR, block_size / 4);
++
++ snd_pcm_period_elapsed(chip->playback_substream);
++ }
++ else if (casr & AC97C_CSR_ENDRX) {
++ chip->period++;
++ if (chip->period == runtime->periods)
++ chip->period = 0;
++ next_period = chip->period + 1;
++ if (next_period == runtime->periods)
++ next_period = 0;
++
++ offset = block_size * next_period;
++
++ ac97c_writel(chip, CARNPR,
++ runtime->dma_addr + offset);
++ ac97c_writel(chip, CARNCR, block_size / 4);
++
++ snd_pcm_period_elapsed(chip->capture_substream);
++ } else {
++ snd_printk(KERN_INFO
++ "atmel-ac97: spurious interrupt, status = 0x%08lx\n",
++ (unsigned long)casr);
++ }
++ } else {
++ snd_printk(KERN_INFO
++ "atmel-ac97: spurious interrupt, status = 0x%08lx\n",
++ status);
++ }
++
++ (volatile int)ac97c_readl(chip, SR);
++
++ return IRQ_HANDLED;
++}
++
++#else
++
++static void atmel_ac97_error(struct dma_request *_req)
++{
++ struct dma_request_cyclic *req = to_dma_request_cyclic(_req);
++
++ printk(KERN_WARNING
++ "DMA Controller error, channel %d (AC97C)\n",
++ req->req.channel);
++}
++
++static void atmel_ac97_block_complete(struct dma_request *_req)
++{
++ struct dma_request_cyclic *req = to_dma_request_cyclic(_req);
++ atmel_ac97_t *chip = req->dev_id;
++ if (req->periph_id == chip->dma.tx_periph_id)
++ snd_pcm_period_elapsed(chip->playback_substream);
++ else
++ snd_pcm_period_elapsed(chip->capture_substream);
++}
++
++#endif
++
++/* CODEC part */
++
++static void snd_atmel_ac97_write(ac97_t *ac97, unsigned short reg,
++ unsigned short val)
++{
++ atmel_ac97_t *chip = ac97->private_data;
++ unsigned long word;
++ int timeout = 40;
++
++ word = (reg & 0x7f) << 16 | val;
++
++ do {
++ if (ac97c_readl(chip, COSR) & AC97C_CSR_TXRDY) {
++ ac97c_writel(chip, COTHR, word);
++ return;
++ }
++ udelay(1);
++ } while (--timeout);
++
++ snd_printk(KERN_WARNING "atmel-ac97: codec write timeout\n");
++}
++
++static unsigned short snd_atmel_ac97_read(ac97_t *ac97,
++ unsigned short reg)
++{
++ atmel_ac97_t *chip = ac97->private_data;
++ unsigned long word;
++ int timeout = 40;
++ int write = 10;
++
++ word = (0x80 | (reg & 0x7f)) << 16;
++
++ if ((ac97c_readl(chip, COSR) & AC97C_CSR_RXRDY) != 0)
++ ac97c_readl(chip, CORHR);
++
++retry_write:
++ timeout = 40;
++
++ do {
++ if ((ac97c_readl(chip, COSR) & AC97C_CSR_TXRDY) != 0) {
++ ac97c_writel(chip, COTHR, word);
++ goto read_reg;
++ }
++ mdelay(10);
++ } while (--timeout);
++
++ if (!--write)
++ goto timed_out;
++ goto retry_write;
++
++read_reg:
++ do {
++ if ((ac97c_readl(chip, COSR) & AC97C_CSR_RXRDY) != 0){
++ unsigned short val = ac97c_readl(chip, CORHR);
++ return val;
++ }
++ mdelay(10);
++ } while (--timeout);
++
++ if (!--write)
++ goto timed_out;
++ goto retry_write;
++
++timed_out:
++ snd_printk(KERN_INFO "atmel-ac97: codec read timeout\n");
++ return 0xffff;
++}
++
++static void snd_atmel_ac97_reset(atmel_ac97_t *chip)
++{
++ /* TODO: Perform hard reset of codec as well */
++ ac97c_writel(chip, MR, AC97C_MR_WRST);
++ mdelay(1);
++ ac97c_writel(chip, MR, AC97C_MR_ENA);
++}
++
++static void snd_atmel_ac97_destroy(snd_card_t *card)
++{
++ atmel_ac97_t *chip = get_chip(card);
++
++#ifdef CONFIG_SND_ATMEL_AC97C_USE_PDC
++ if (chip->irq != -1)
++ free_irq(chip->irq, chip);
++#endif
++ if (chip->regs)
++ iounmap(chip->regs);
++
++ if (chip->mck) {
++ clk_disable(chip->mck);
++ clk_put(chip->mck);
++ }
++
++#ifndef CONFIG_SND_ATMEL_AC97C_USE_PDC
++ if (chip->dma.req_tx.req.dmac){
++ dma_release_channel(chip->dma.req_tx.req.dmac,
++ chip->dma.req_tx.req.channel);
++ }
++ if (chip->dma.req_rx.req.dmac) {
++ dma_release_channel(chip->dma.req_rx.req.dmac,
++ chip->dma.req_rx.req.channel);
++ }
++#endif
++}
++
++static int __devinit snd_atmel_ac97_create(snd_card_t *card,
++ struct platform_device *pdev)
++{
++ static ac97_bus_ops_t ops = {
++ .write = snd_atmel_ac97_write,
++ .read = snd_atmel_ac97_read,
++ };
++ atmel_ac97_t *chip = get_chip(card);
++ struct resource *regs;
++ struct clk *mck;
++#ifdef CONFIG_SND_ATMEL_AC97C_USE_PDC
++ int irq;
++#endif
++ int err;
++
++ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ if (!regs)
++ return -ENXIO;
++#ifdef CONFIG_SND_ATMEL_AC97C_USE_PDC
++ irq = platform_get_irq(pdev, 0);
++ if (irq < 0)
++ return irq;
++#endif
++
++ mck = clk_get(&pdev->dev, "mck");
++ if (IS_ERR(mck))
++ return PTR_ERR(mck);
++ clk_enable(mck);
++ chip->mck = mck;
++
++ card->private_free = snd_atmel_ac97_destroy;
++
++ spin_lock_init(&chip->lock);
++ chip->card = card;
++ chip->pdev = pdev;
++ chip->irq = -1;
++
++#ifdef CONFIG_SND_ATMEL_AC97C_USE_PDC
++ err = request_irq(irq, snd_atmel_ac97_interrupt, 0,
++ "ac97", chip);
++ if (err) {
++ snd_printk("unable to request IRQ%d\n", irq);
++ return err;
++ }
++ chip->irq = irq;
++#endif
++
++ chip->regs = ioremap(regs->start, regs->end - regs->start + 1);
++ if (!chip->regs)
++ return -ENOMEM;
++
++ snd_card_set_dev(card, &pdev->dev);
++
++ err = snd_ac97_bus(card, 0, &ops, chip, &chip->ac97_bus);
++
++ return err;
++}
++
++static int __devinit snd_atmel_ac97_probe(struct platform_device *pdev)
++{
++ static int dev;
++ snd_card_t *card;
++ atmel_ac97_t *chip;
++ int err;
++ int ch;
++
++ if (dev >= SNDRV_CARDS)
++ return -ENODEV;
++ if (!enable[dev]) {
++ dev++;
++ return -ENOENT;
++ }
++
++ err = -ENOMEM;
++
++ mutex_init(&opened_mutex);
++
++ card = snd_card_new(index[dev], id[dev], THIS_MODULE,
++ sizeof(atmel_ac97_t));
++ if (!card)
++ goto out;
++ chip = get_chip(card);
++
++ err = snd_atmel_ac97_create(card, pdev);
++ if (err)
++ goto out_free_card;
++
++ snd_atmel_ac97_reset(chip);
++
++ err = snd_atmel_ac97_mixer_new(chip);
++ if (err)
++ goto out_free_card;
++
++ err = snd_atmel_ac97_pcm_new(chip);
++ if (err)
++ goto out_free_card;
++
++#ifndef CONFIG_SND_ATMEL_AC97C_USE_PDC
++ /* TODO: Get this information from the platform device */
++ chip->dma.req_tx.req.dmac = find_dma_controller(0);
++ if (!chip->dma.req_tx.req.dmac) {
++ printk(KERN_ERR
++ "atmel-ac97c: No DMA controller for TX, aborting\n");
++ goto out_free_card;
++ }
++ chip->dma.req_rx.req.dmac = find_dma_controller(0);
++ if (!chip->dma.req_rx.req.dmac) {
++ snd_printk(KERN_ERR
++ "atmel-ac97c: No DMA controller available for RX, aborting\n");
++ goto out_free_card;
++ }
++
++ chip->dma.rx_periph_id = 3;
++ chip->dma.tx_periph_id = 4;
++
++ ch = dma_alloc_channel(chip->dma.req_tx.req.dmac);
++ if (ch < 0) {
++ printk(KERN_ERR
++ "atmel-ac97c: Unable to allocate TX DMA channel, aborting\n");
++ goto out_free_card;
++ }
++ chip->dma.req_tx.req.channel = ch;
++ chip->dma.req_tx.width = DMA_WIDTH_16BIT;
++ chip->dma.req_tx.req.block_complete = atmel_ac97_block_complete;
++ chip->dma.req_tx.req.error = atmel_ac97_error;
++
++ ch = dma_alloc_channel(chip->dma.req_rx.req.dmac);
++ if (ch < 0) {
++ snd_printk(KERN_ERR
++ "atmel-ac97c: Unable to allocate RX DMA channel, aborting\n");
++ goto out_free_card;
++ }
++ chip->dma.req_rx.req.channel = ch;
++ chip->dma.req_rx.width = DMA_WIDTH_16BIT;
++ chip->dma.req_rx.req.block_complete = atmel_ac97_block_complete;
++ chip->dma.req_rx.req.error = atmel_ac97_error;
++#endif
++
++ strcpy(card->driver, "ac97c");
++ strcpy(card->shortname, "Atmel-AC97");
++#ifdef CONFIG_SND_ATMEL_AC97C_USE_PDC
++ sprintf(card->longname, "Atmel AVR32 AC97 Controller at 0x%p, irq %i",
++ chip->regs, chip->irq);
++#else
++ sprintf(card->longname, "Atmel AVR32 AC97 Controller at 0x%p, dma rx %i and tx %i",
++ chip->regs, chip->dma.rx_periph_id, chip->dma.tx_periph_id);
++#endif
++
++ err = snd_card_register(card);
++ if (err)
++ goto out_free_card;
++
++ platform_set_drvdata(pdev, card);
++ dev++;
++ return 0;
++
++out_free_card:
++ snd_card_free(card);
++out:
++ return err;
++}
++
++static int __devexit snd_atmel_ac97_remove(struct platform_device *pdev)
++{
++ snd_card_t *card = platform_get_drvdata(pdev);
++
++ snd_card_free(card);
++ platform_set_drvdata(pdev, NULL);
++ return 0;
++}
++
++static struct platform_driver atmel_ac97_driver = {
++ .probe = snd_atmel_ac97_probe,
++ .remove = __devexit_p(snd_atmel_ac97_remove),
++ .driver = {
++ .name = "ac97c",
++ },
++};
++
++static int __init atmel_ac97_init(void)
++{
++ return platform_driver_register(&atmel_ac97_driver);
++}
++
++static void __exit atmel_ac97_exit(void)
++{
++ platform_driver_unregister(&atmel_ac97_driver);
++}
++
++module_init(atmel_ac97_init);
++module_exit(atmel_ac97_exit);
++
++MODULE_LICENSE("GPL");
++MODULE_DESCRIPTION("Driver for Atmel AC97 Controller");
++MODULE_AUTHOR("Haavard Skinnemoen <hskinnemoen@atmel.com>");
+Index: linux-2.6.18-avr32/sound/avr32/ac97c.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.18-avr32/sound/avr32/ac97c.h 2006-11-02 15:56:20.000000000 +0100
+@@ -0,0 +1,71 @@
++/*
++ * Register definitions for the Atmel AC97 Controller.
++ *
++ * Copyright (C) 2005-2006 Atmel Corporation
++ *
++ * 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.
++ */
++#ifndef __SOUND_AVR32_AC97C_H
++#define __SOUND_AVR32_AC97C_H
++
++#define AC97C_MR 0x08
++#define AC97C_ICA 0x10
++#define AC97C_OCA 0x14
++#define AC97C_CARHR 0x20
++#define AC97C_CATHR 0x24
++#define AC97C_CASR 0x28
++#define AC97C_CAMR 0x2c
++#define AC97C_CBRHR 0x30
++#define AC97C_CBTHR 0x34
++#define AC97C_CBSR 0x38
++#define AC97C_CBMR 0x3c
++#define AC97C_CORHR 0x40
++#define AC97C_COTHR 0x44
++#define AC97C_COSR 0x48
++#define AC97C_COMR 0x4c
++#define AC97C_SR 0x50
++#define AC97C_IER 0x54
++#define AC97C_IDR 0x58
++#define AC97C_IMR 0x5c
++#define AC97C_VERSION 0xfc
++
++#define AC97C_CATPR PDC_TPR
++#define AC97C_CATCR PDC_TCR
++#define AC97C_CATNPR PDC_TNPR
++#define AC97C_CATNCR PDC_TNCR
++#define AC97C_CARPR PDC_RPR
++#define AC97C_CARCR PDC_RCR
++#define AC97C_CARNPR PDC_RNPR
++#define AC97C_CARNCR PDC_RNCR
++#define AC97C_PTCR PDC_PTCR
++
++#define AC97C_MR_ENA (1 << 0)
++#define AC97C_MR_WRST (1 << 1)
++#define AC97C_MR_VRA (1 << 2)
++
++#define AC97C_CSR_TXRDY (1 << 0)
++#define AC97C_CSR_UNRUN (1 << 2)
++#define AC97C_CSR_RXRDY (1 << 4)
++#define AC97C_CSR_ENDTX (1 << 10)
++#define AC97C_CSR_ENDRX (1 << 14)
++
++#define AC97C_CMR_SIZE_20 (0 << 16)
++#define AC97C_CMR_SIZE_18 (1 << 16)
++#define AC97C_CMR_SIZE_16 (2 << 16)
++#define AC97C_CMR_SIZE_10 (3 << 16)
++#define AC97C_CMR_CEM_LITTLE (1 << 18)
++#define AC97C_CMR_CEM_BIG (0 << 18)
++#define AC97C_CMR_CENA (1 << 21)
++#define AC97C_CMR_PDCEN (1 << 22)
++
++#define AC97C_SR_CAEVT (1 << 3)
++
++#define AC97C_CH_ASSIGN(slot, channel) \
++ (AC97C_CHANNEL_##channel << (3 * (AC97_SLOT_##slot - 3)))
++#define AC97C_CHANNEL_NONE 0x0
++#define AC97C_CHANNEL_A 0x1
++#define AC97C_CHANNEL_B 0x2
++
++#endif /* __SOUND_AVR32_AC97C_H */