--- /dev/null
+/* Analog Devices 1889 audio driver
+ *
+ * This is a driver for the AD1889 PCI audio chipset found
+ * on the HP PA-RISC [BCJ]-xxx0 workstations.
+ *
+ * Copyright (C) 2004-2005, Kyle McMartin <kyle@parisc-linux.org>
+ * Copyright (C) 2005, Thibaut Varene <varenet@parisc-linux.org>
+ * Based on the OSS AD1889 driver by Randolph Chung <tausq@debian.org>
+ *
+ * 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.
+ *
+ * TODO:
+ * Do we need to take care of CCS register?
+ * Maybe we could use finer grained locking (separate locks for pb/cap)?
+ * Wishlist:
+ * Control Interface (mixer) support
+ * Better AC97 support (VSR...)?
+ * PM support
+ * MIDI support
+ * Game Port support
+ * SG DMA support (this will need *alot* of work)
+ */
+
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/compiler.h>
+#include <linux/delay.h>
+
+#include <sound/driver.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/initval.h>
+#include <sound/ac97_codec.h>
+
+#include <asm/io.h>
+
+#include "ad1889.h"
+#include "ac97/ac97_id.h"
+
+#define AD1889_DRVVER "$Revision: 1.1 $"
+
+MODULE_AUTHOR("Kyle McMartin <kyle@parisc-linux.org>, Thibaut Varene <t-bone@parisc-linux.org>");
+MODULE_DESCRIPTION("Analog Devices AD1889 ALSA sound driver");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("{{Analog Devices,AD1889}}");
+
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "Index value for the AD1889 soundcard.");
+
+static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
+module_param_array(id, charp, NULL, 0444);
+MODULE_PARM_DESC(id, "ID string for the AD1889 soundcard.");
+
+static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "Enable AD1889 soundcard.");
+
+static char *ac97_quirk[SNDRV_CARDS];
+module_param_array(ac97_quirk, charp, NULL, 0444);
+MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
+
+#define DEVNAME "ad1889"
+#define PFX DEVNAME ": "
+
+/* let's use the global sound debug interfaces */
+#define ad1889_debug(fmt, arg...) snd_printd(KERN_DEBUG fmt, ## arg)
+
+/* keep track of some hw registers */
+struct ad1889_register_state {
+ u16 reg; /* reg setup */
+ u32 addr; /* dma base address */
+ unsigned long size; /* DMA buffer size */
+};
+
+struct snd_ad1889 {
+ snd_card_t *card;
+ struct pci_dev *pci;
+
+ int irq;
+ unsigned long bar;
+ void __iomem *iobase;
+
+ ac97_t *ac97;
+ ac97_bus_t *ac97_bus;
+ snd_pcm_t *pcm;
+ snd_info_entry_t *proc;
+
+ snd_pcm_substream_t *psubs;
+ snd_pcm_substream_t *csubs;
+
+ /* playback register state */
+ struct ad1889_register_state wave;
+ struct ad1889_register_state ramc;
+
+ spinlock_t lock;
+};
+
+static inline u16
+ad1889_readw(struct snd_ad1889 *chip, unsigned reg)
+{
+ return readw(chip->iobase + reg);
+}
+
+static inline void
+ad1889_writew(struct snd_ad1889 *chip, unsigned reg, u16 val)
+{
+ writew(val, chip->iobase + reg);
+}
+
+static inline u32
+ad1889_readl(struct snd_ad1889 *chip, unsigned reg)
+{
+ return readl(chip->iobase + reg);
+}
+
+static inline void
+ad1889_writel(struct snd_ad1889 *chip, unsigned reg, u32 val)
+{
+ writel(val, chip->iobase + reg);
+}
+
+static inline void
+ad1889_unmute(struct snd_ad1889 *chip)
+{
+ u16 st;
+ st = ad1889_readw(chip, AD_DS_WADA) &
+ ~(AD_DS_WADA_RWAM | AD_DS_WADA_LWAM);
+ ad1889_writew(chip, AD_DS_WADA, st);
+ ad1889_readw(chip, AD_DS_WADA);
+}
+
+static inline void
+ad1889_mute(struct snd_ad1889 *chip)
+{
+ u16 st;
+ st = ad1889_readw(chip, AD_DS_WADA) | AD_DS_WADA_RWAM | AD_DS_WADA_LWAM;
+ ad1889_writew(chip, AD_DS_WADA, st);
+ ad1889_readw(chip, AD_DS_WADA);
+}
+
+static inline void
+ad1889_load_adc_buffer_address(struct snd_ad1889 *chip, u32 address)
+{
+ ad1889_writel(chip, AD_DMA_ADCBA, address);
+ ad1889_writel(chip, AD_DMA_ADCCA, address);
+}
+
+static inline void
+ad1889_load_adc_buffer_count(struct snd_ad1889 *chip, u32 count)
+{
+ ad1889_writel(chip, AD_DMA_ADCBC, count);
+ ad1889_writel(chip, AD_DMA_ADCCC, count);
+}
+
+static inline void
+ad1889_load_adc_interrupt_count(struct snd_ad1889 *chip, u32 count)
+{
+ ad1889_writel(chip, AD_DMA_ADCIB, count);
+ ad1889_writel(chip, AD_DMA_ADCIC, count);
+}
+
+static inline void
+ad1889_load_wave_buffer_address(struct snd_ad1889 *chip, u32 address)
+{
+ ad1889_writel(chip, AD_DMA_WAVBA, address);
+ ad1889_writel(chip, AD_DMA_WAVCA, address);
+}
+
+static inline void
+ad1889_load_wave_buffer_count(struct snd_ad1889 *chip, u32 count)
+{
+ ad1889_writel(chip, AD_DMA_WAVBC, count);
+ ad1889_writel(chip, AD_DMA_WAVCC, count);
+}
+
+static inline void
+ad1889_load_wave_interrupt_count(struct snd_ad1889 *chip, u32 count)
+{
+ ad1889_writel(chip, AD_DMA_WAVIB, count);
+ ad1889_writel(chip, AD_DMA_WAVIC, count);
+}
+
+static void
+ad1889_channel_reset(struct snd_ad1889 *chip, unsigned int channel)
+{
+ u16 reg;
+
+ if (channel & AD_CHAN_WAV) {
+ /* Disable wave channel */
+ reg = ad1889_readw(chip, AD_DS_WSMC) & ~AD_DS_WSMC_WAEN;
+ ad1889_writew(chip, AD_DS_WSMC, reg);
+ chip->wave.reg = reg;
+
+ /* disable IRQs */
+ reg = ad1889_readw(chip, AD_DMA_WAV);
+ reg &= AD_DMA_IM_DIS;
+ reg &= ~AD_DMA_LOOP;
+ ad1889_writew(chip, AD_DMA_WAV, reg);
+
+ /* clear IRQ and address counters and pointers */
+ ad1889_load_wave_buffer_address(chip, 0x0);
+ ad1889_load_wave_buffer_count(chip, 0x0);
+ ad1889_load_wave_interrupt_count(chip, 0x0);
+
+ /* flush */
+ ad1889_readw(chip, AD_DMA_WAV);
+ }
+
+ if (channel & AD_CHAN_ADC) {
+ /* Disable ADC channel */
+ reg = ad1889_readw(chip, AD_DS_RAMC) & ~AD_DS_RAMC_ADEN;
+ ad1889_writew(chip, AD_DS_RAMC, reg);
+ chip->ramc.reg = reg;
+
+ reg = ad1889_readw(chip, AD_DMA_ADC);
+ reg &= AD_DMA_IM_DIS;
+ reg &= ~AD_DMA_LOOP;
+ ad1889_writew(chip, AD_DMA_ADC, reg);
+
+ ad1889_load_adc_buffer_address(chip, 0x0);
+ ad1889_load_adc_buffer_count(chip, 0x0);
+ ad1889_load_adc_interrupt_count(chip, 0x0);
+
+ /* flush */
+ ad1889_readw(chip, AD_DMA_ADC);
+ }
+}
+
+static inline u16
+snd_ad1889_ac97_read(ac97_t *ac97, unsigned short reg)
+{
+ struct snd_ad1889 *chip = ac97->private_data;
+ return ad1889_readw(chip, AD_AC97_BASE + reg);
+}
+
+static inline void
+snd_ad1889_ac97_write(ac97_t *ac97, unsigned short reg, unsigned short val)
+{
+ struct snd_ad1889 *chip = ac97->private_data;
+ ad1889_writew(chip, AD_AC97_BASE + reg, val);
+}
+
+static int
+snd_ad1889_ac97_ready(struct snd_ad1889 *chip)
+{
+ int retry = 400; /* average needs 352 msec */
+
+ while (!(ad1889_readw(chip, AD_AC97_ACIC) & AD_AC97_ACIC_ACRDY)
+ && --retry)
+ mdelay(1);
+ if (!retry) {
+ snd_printk(KERN_ERR PFX "[%s] Link is not ready.\n",
+ __FUNCTION__);
+ return -EIO;
+ }
+ ad1889_debug("[%s] ready after %d ms\n", __FUNCTION__, 400 - retry);
+
+ return 0;
+}
+
+static int
+snd_ad1889_hw_params(snd_pcm_substream_t *substream,
+ snd_pcm_hw_params_t *hw_params)
+{
+ return snd_pcm_lib_malloc_pages(substream,
+ params_buffer_bytes(hw_params));
+}
+
+static int
+snd_ad1889_hw_free(snd_pcm_substream_t *substream)
+{
+ return snd_pcm_lib_free_pages(substream);
+}
+
+static snd_pcm_hardware_t snd_ad1889_playback_hw = {
+ .info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_BLOCK_TRANSFER,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
+ .rate_min = 8000, /* docs say 7000, but we're lazy */
+ .rate_max = 48000,
+ .channels_min = 1,
+ .channels_max = 2,
+ .buffer_bytes_max = BUFFER_BYTES_MAX,
+ .period_bytes_min = PERIOD_BYTES_MIN,
+ .period_bytes_max = PERIOD_BYTES_MAX,
+ .periods_min = PERIODS_MIN,
+ .periods_max = PERIODS_MAX,
+ /*.fifo_size = 0,*/
+};
+
+static snd_pcm_hardware_t snd_ad1889_capture_hw = {
+ .info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_BLOCK_TRANSFER,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ .rates = SNDRV_PCM_RATE_48000,
+ .rate_min = 48000, /* docs say we could to VSR, but we're lazy */
+ .rate_max = 48000,
+ .channels_min = 1,
+ .channels_max = 2,
+ .buffer_bytes_max = BUFFER_BYTES_MAX,
+ .period_bytes_min = PERIOD_BYTES_MIN,
+ .period_bytes_max = PERIOD_BYTES_MAX,
+ .periods_min = PERIODS_MIN,
+ .periods_max = PERIODS_MAX,
+ /*.fifo_size = 0,*/
+};
+
+static int
+snd_ad1889_playback_open(snd_pcm_substream_t *ss)
+{
+ struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+ snd_pcm_runtime_t *rt = ss->runtime;
+
+ chip->psubs = ss;
+ rt->hw = snd_ad1889_playback_hw;
+
+ return 0;
+}
+
+static int
+snd_ad1889_capture_open(snd_pcm_substream_t *ss)
+{
+ struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+ snd_pcm_runtime_t *rt = ss->runtime;
+
+ chip->csubs = ss;
+ rt->hw = snd_ad1889_capture_hw;
+
+ return 0;
+}
+
+static int
+snd_ad1889_playback_close(snd_pcm_substream_t *ss)
+{
+ struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+ chip->psubs = NULL;
+ return 0;
+}
+
+static int
+snd_ad1889_capture_close(snd_pcm_substream_t *ss)
+{
+ struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+ chip->csubs = NULL;
+ return 0;
+}
+
+static int
+snd_ad1889_playback_prepare(snd_pcm_substream_t *ss)
+{
+ struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+ snd_pcm_runtime_t *rt = ss->runtime;
+ unsigned int size = snd_pcm_lib_buffer_bytes(ss);
+ unsigned int count = snd_pcm_lib_period_bytes(ss);
+ u16 reg;
+
+ ad1889_channel_reset(chip, AD_CHAN_WAV);
+
+ reg = ad1889_readw(chip, AD_DS_WSMC);
+
+ /* Mask out 16-bit / Stereo */
+ reg &= ~(AD_DS_WSMC_WA16 | AD_DS_WSMC_WAST);
+
+ if (snd_pcm_format_width(rt->format) == 16)
+ reg |= AD_DS_WSMC_WA16;
+
+ if (rt->channels > 1)
+ reg |= AD_DS_WSMC_WAST;
+
+ /* let's make sure we don't clobber ourselves */
+ spin_lock_irq(&chip->lock);
+
+ chip->wave.size = size;
+ chip->wave.reg = reg;
+ chip->wave.addr = rt->dma_addr;
+
+ ad1889_writew(chip, AD_DS_WSMC, chip->wave.reg);
+
+ /* Set sample rates on the codec */
+ ad1889_writew(chip, AD_DS_WAS, rt->rate);
+
+ /* Set up DMA */
+ ad1889_load_wave_buffer_address(chip, chip->wave.addr);
+ ad1889_load_wave_buffer_count(chip, size);
+ ad1889_load_wave_interrupt_count(chip, count);
+
+ /* writes flush */
+ ad1889_readw(chip, AD_DS_WSMC);
+
+ spin_unlock_irq(&chip->lock);
+
+ ad1889_debug("prepare playback: addr = 0x%x, count = %u, "
+ "size = %u, reg = 0x%x, rate = %u\n", chip->wave.addr,
+ count, size, reg, rt->rate);
+ return 0;
+}
+
+static int
+snd_ad1889_capture_prepare(snd_pcm_substream_t *ss)
+{
+ struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+ snd_pcm_runtime_t *rt = ss->runtime;
+ unsigned int size = snd_pcm_lib_buffer_bytes(ss);
+ unsigned int count = snd_pcm_lib_period_bytes(ss);
+ u16 reg;
+
+ ad1889_channel_reset(chip, AD_CHAN_ADC);
+
+ reg = ad1889_readw(chip, AD_DS_RAMC);
+
+ /* Mask out 16-bit / Stereo */
+ reg &= ~(AD_DS_RAMC_AD16 | AD_DS_RAMC_ADST);
+
+ if (snd_pcm_format_width(rt->format) == 16)
+ reg |= AD_DS_RAMC_AD16;
+
+ if (rt->channels > 1)
+ reg |= AD_DS_RAMC_ADST;
+
+ /* let's make sure we don't clobber ourselves */
+ spin_lock_irq(&chip->lock);
+
+ chip->ramc.size = size;
+ chip->ramc.reg = reg;
+ chip->ramc.addr = rt->dma_addr;
+
+ ad1889_writew(chip, AD_DS_RAMC, chip->ramc.reg);
+
+ /* Set up DMA */
+ ad1889_load_adc_buffer_address(chip, chip->ramc.addr);
+ ad1889_load_adc_buffer_count(chip, size);
+ ad1889_load_adc_interrupt_count(chip, count);
+
+ /* writes flush */
+ ad1889_readw(chip, AD_DS_RAMC);
+
+ spin_unlock_irq(&chip->lock);
+
+ ad1889_debug("prepare capture: addr = 0x%x, count = %u, "
+ "size = %u, reg = 0x%x, rate = %u\n", chip->ramc.addr,
+ count, size, reg, rt->rate);
+ return 0;
+}
+
+/* this is called in atomic context with IRQ disabled.
+ Must be as fast as possible and not sleep.
+ DMA should be *triggered* by this call.
+ The WSMC "WAEN" bit triggers DMA Wave On/Off */
+static int
+snd_ad1889_playback_trigger(snd_pcm_substream_t *ss, int cmd)
+{
+ u16 wsmc;
+ struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+
+ wsmc = ad1889_readw(chip, AD_DS_WSMC);
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ /* enable DMA loop & interrupts */
+ ad1889_writew(chip, AD_DMA_WAV, AD_DMA_LOOP | AD_DMA_IM_CNT);
+ wsmc |= AD_DS_WSMC_WAEN;
+ /* 1 to clear CHSS bit */
+ ad1889_writel(chip, AD_DMA_CHSS, AD_DMA_CHSS_WAVS);
+ ad1889_unmute(chip);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ ad1889_mute(chip);
+ wsmc &= ~AD_DS_WSMC_WAEN;
+ break;
+ default:
+ snd_BUG();
+ return -EINVAL;
+ }
+
+ chip->wave.reg = wsmc;
+ ad1889_writew(chip, AD_DS_WSMC, wsmc);
+ ad1889_readw(chip, AD_DS_WSMC); /* flush */
+
+ /* reset the chip when STOP - will disable IRQs */
+ if (cmd == SNDRV_PCM_TRIGGER_STOP)
+ ad1889_channel_reset(chip, AD_CHAN_WAV);
+
+ return 0;
+}
+
+/* this is called in atomic context with IRQ disabled.
+ Must be as fast as possible and not sleep.
+ DMA should be *triggered* by this call.
+ The RAMC "ADEN" bit triggers DMA ADC On/Off */
+static int
+snd_ad1889_capture_trigger(snd_pcm_substream_t *ss, int cmd)
+{
+ u16 ramc;
+ struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+
+ ramc = ad1889_readw(chip, AD_DS_RAMC);
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ /* enable DMA loop & interrupts */
+ ad1889_writew(chip, AD_DMA_ADC, AD_DMA_LOOP | AD_DMA_IM_CNT);
+ ramc |= AD_DS_RAMC_ADEN;
+ /* 1 to clear CHSS bit */
+ ad1889_writel(chip, AD_DMA_CHSS, AD_DMA_CHSS_ADCS);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ ramc &= ~AD_DS_RAMC_ADEN;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ chip->ramc.reg = ramc;
+ ad1889_writew(chip, AD_DS_RAMC, ramc);
+ ad1889_readw(chip, AD_DS_RAMC); /* flush */
+
+ /* reset the chip when STOP - will disable IRQs */
+ if (cmd == SNDRV_PCM_TRIGGER_STOP)
+ ad1889_channel_reset(chip, AD_CHAN_ADC);
+
+ return 0;
+}
+
+/* Called in atomic context with IRQ disabled */
+static snd_pcm_uframes_t
+snd_ad1889_playback_pointer(snd_pcm_substream_t *ss)
+{
+ size_t ptr = 0;
+ struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+
+ if (unlikely(!(chip->wave.reg & AD_DS_WSMC_WAEN)))
+ return 0;
+
+ ptr = ad1889_readl(chip, AD_DMA_WAVCA);
+ ptr -= chip->wave.addr;
+
+ snd_assert((ptr >= 0) && (ptr < chip->wave.size), return 0);
+
+ return bytes_to_frames(ss->runtime, ptr);
+}
+
+/* Called in atomic context with IRQ disabled */
+static snd_pcm_uframes_t
+snd_ad1889_capture_pointer(snd_pcm_substream_t *ss)
+{
+ size_t ptr = 0;
+ struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+
+ if (unlikely(!(chip->ramc.reg & AD_DS_RAMC_ADEN)))
+ return 0;
+
+ ptr = ad1889_readl(chip, AD_DMA_ADCCA);
+ ptr -= chip->ramc.addr;
+
+ snd_assert((ptr >= 0) && (ptr < chip->ramc.size), return 0);
+
+ return bytes_to_frames(ss->runtime, ptr);
+}
+
+static snd_pcm_ops_t snd_ad1889_playback_ops = {
+ .open = snd_ad1889_playback_open,
+ .close = snd_ad1889_playback_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_ad1889_hw_params,
+ .hw_free = snd_ad1889_hw_free,
+ .prepare = snd_ad1889_playback_prepare,
+ .trigger = snd_ad1889_playback_trigger,
+ .pointer = snd_ad1889_playback_pointer,
+};
+
+static snd_pcm_ops_t snd_ad1889_capture_ops = {
+ .open = snd_ad1889_capture_open,
+ .close = snd_ad1889_capture_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_ad1889_hw_params,
+ .hw_free = snd_ad1889_hw_free,
+ .prepare = snd_ad1889_capture_prepare,
+ .trigger = snd_ad1889_capture_trigger,
+ .pointer = snd_ad1889_capture_pointer,
+};
+
+static irqreturn_t
+snd_ad1889_interrupt(int irq,
+ void *dev_id,
+ struct pt_regs *regs)
+{
+ unsigned long st;
+ struct snd_ad1889 *chip = dev_id;
+
+ st = ad1889_readl(chip, AD_DMA_DISR);
+
+ /* clear ISR */
+ ad1889_writel(chip, AD_DMA_DISR, st);
+
+ st &= AD_INTR_MASK;
+
+ if (unlikely(!st))
+ return IRQ_NONE;
+
+ if (st & (AD_DMA_DISR_PMAI|AD_DMA_DISR_PTAI))
+ ad1889_debug("Unexpected master or target abort interrupt!\n");
+
+ if ((st & AD_DMA_DISR_WAVI) && chip->psubs)
+ snd_pcm_period_elapsed(chip->psubs);
+ if ((st & AD_DMA_DISR_ADCI) && chip->csubs)
+ snd_pcm_period_elapsed(chip->csubs);
+
+ return IRQ_HANDLED;
+}
+
+static void
+snd_ad1889_pcm_free(snd_pcm_t *pcm)
+{
+ struct snd_ad1889 *chip = pcm->private_data;
+ chip->pcm = NULL;
+ snd_pcm_lib_preallocate_free_for_all(pcm);
+}
+
+static int __devinit
+snd_ad1889_pcm_init(struct snd_ad1889 *chip, int device, snd_pcm_t **rpcm)
+{
+ int err;
+ snd_pcm_t *pcm;
+
+ if (rpcm)
+ *rpcm = NULL;
+
+ err = snd_pcm_new(chip->card, chip->card->driver, device, 1, 1, &pcm);
+ if (err < 0)
+ return err;
+
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
+ &snd_ad1889_playback_ops);
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
+ &snd_ad1889_capture_ops);
+
+ pcm->private_data = chip;
+ pcm->private_free = snd_ad1889_pcm_free;
+ pcm->info_flags = 0;
+ strcpy(pcm->name, chip->card->shortname);
+
+ chip->pcm = pcm;
+ chip->psubs = NULL;
+ chip->csubs = NULL;
+
+ err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
+ snd_dma_pci_data(chip->pci),
+ BUFFER_BYTES_MAX / 2,
+ BUFFER_BYTES_MAX);
+
+ if (err < 0) {
+ snd_printk(KERN_ERR PFX "buffer allocation error: %d\n", err);
+ return err;
+ }
+
+ if (rpcm)
+ *rpcm = pcm;
+
+ return 0;
+}
+
+static void
+snd_ad1889_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
+{
+ struct snd_ad1889 *chip = entry->private_data;
+ u16 reg;
+ int tmp;
+
+ reg = ad1889_readw(chip, AD_DS_WSMC);
+ snd_iprintf(buffer, "Wave output: %s\n",
+ (reg & AD_DS_WSMC_WAEN) ? "enabled" : "disabled");
+ snd_iprintf(buffer, "Wave Channels: %s\n",
+ (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono");
+ snd_iprintf(buffer, "Wave Quality: %d-bit linear\n",
+ (reg & AD_DS_WSMC_WA16) ? 16 : 8);
+
+ /* WARQ is at offset 12 */
+ tmp = (reg & AD_DS_WSMC_WARQ) ?
+ (((reg & AD_DS_WSMC_WARQ >> 12) & 0x01) ? 12 : 18) : 4;
+ tmp /= (reg & AD_DS_WSMC_WAST) ? 2 : 1;
+
+ snd_iprintf(buffer, "Wave FIFO: %d %s words\n\n", tmp,
+ (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono");
+
+
+ snd_iprintf(buffer, "Synthesis output: %s\n",
+ reg & AD_DS_WSMC_SYEN ? "enabled" : "disabled");
+
+ /* SYRQ is at offset 4 */
+ tmp = (reg & AD_DS_WSMC_SYRQ) ?
+ (((reg & AD_DS_WSMC_SYRQ >> 4) & 0x01) ? 12 : 18) : 4;
+ tmp /= (reg & AD_DS_WSMC_WAST) ? 2 : 1;
+
+ snd_iprintf(buffer, "Synthesis FIFO: %d %s words\n\n", tmp,
+ (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono");
+
+ reg = ad1889_readw(chip, AD_DS_RAMC);
+ snd_iprintf(buffer, "ADC input: %s\n",
+ (reg & AD_DS_RAMC_ADEN) ? "enabled" : "disabled");
+ snd_iprintf(buffer, "ADC Channels: %s\n",
+ (reg & AD_DS_RAMC_ADST) ? "stereo" : "mono");
+ snd_iprintf(buffer, "ADC Quality: %d-bit linear\n",
+ (reg & AD_DS_RAMC_AD16) ? 16 : 8);
+
+ /* ACRQ is at offset 4 */
+ tmp = (reg & AD_DS_RAMC_ACRQ) ?
+ (((reg & AD_DS_RAMC_ACRQ >> 4) & 0x01) ? 12 : 18) : 4;
+ tmp /= (reg & AD_DS_RAMC_ADST) ? 2 : 1;
+
+ snd_iprintf(buffer, "ADC FIFO: %d %s words\n\n", tmp,
+ (reg & AD_DS_RAMC_ADST) ? "stereo" : "mono");
+
+ snd_iprintf(buffer, "Resampler input: %s\n",
+ reg & AD_DS_RAMC_REEN ? "enabled" : "disabled");
+
+ /* RERQ is at offset 12 */
+ tmp = (reg & AD_DS_RAMC_RERQ) ?
+ (((reg & AD_DS_RAMC_RERQ >> 12) & 0x01) ? 12 : 18) : 4;
+ tmp /= (reg & AD_DS_RAMC_ADST) ? 2 : 1;
+
+ snd_iprintf(buffer, "Resampler FIFO: %d %s words\n\n", tmp,
+ (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono");
+
+
+ /* doc says LSB represents -1.5dB, but the max value (-94.5dB)
+ suggests that LSB is -3dB, which is more coherent with the logarithmic
+ nature of the dB scale */
+ reg = ad1889_readw(chip, AD_DS_WADA);
+ snd_iprintf(buffer, "Left: %s, -%d dB\n",
+ (reg & AD_DS_WADA_LWAM) ? "mute" : "unmute",
+ ((reg & AD_DS_WADA_LWAA) >> 8) * 3);
+ reg = ad1889_readw(chip, AD_DS_WADA);
+ snd_iprintf(buffer, "Right: %s, -%d dB\n",
+ (reg & AD_DS_WADA_RWAM) ? "mute" : "unmute",
+ ((reg & AD_DS_WADA_RWAA) >> 8) * 3);
+
+ reg = ad1889_readw(chip, AD_DS_WAS);
+ snd_iprintf(buffer, "Wave samplerate: %u Hz\n", reg);
+ reg = ad1889_readw(chip, AD_DS_RES);
+ snd_iprintf(buffer, "Resampler samplerate: %u Hz\n", reg);
+}
+
+static void __devinit
+snd_ad1889_proc_init(struct snd_ad1889 *chip)
+{
+ snd_info_entry_t *entry;
+
+ if (!snd_card_proc_new(chip->card, chip->card->driver, &entry))
+ snd_info_set_text_ops(entry, chip, 1024, snd_ad1889_proc_read);
+}
+
+static struct ac97_quirk ac97_quirks[] = {
+ {
+ .subvendor = 0x11d4, /* AD */
+ .subdevice = 0x1889, /* AD1889 */
+ .codec_id = AC97_ID_AD1819,
+ .name = "AD1889",
+ .type = AC97_TUNE_HP_ONLY
+ },
+ { } /* terminator */
+};
+
+static void __devinit
+snd_ad1889_ac97_xinit(struct snd_ad1889 *chip)
+{
+ u16 reg;
+
+ reg = ad1889_readw(chip, AD_AC97_ACIC);
+ reg |= AD_AC97_ACIC_ACRD; /* Reset Disable */
+ ad1889_writew(chip, AD_AC97_ACIC, reg);
+ ad1889_readw(chip, AD_AC97_ACIC); /* flush posted write */
+ udelay(10);
+ /* Interface Enable */
+ reg |= AD_AC97_ACIC_ACIE;
+ ad1889_writew(chip, AD_AC97_ACIC, reg);
+
+ snd_ad1889_ac97_ready(chip);
+
+ /* Audio Stream Output | Variable Sample Rate Mode */
+ reg = ad1889_readw(chip, AD_AC97_ACIC);
+ reg |= AD_AC97_ACIC_ASOE | AD_AC97_ACIC_VSRM;
+ ad1889_writew(chip, AD_AC97_ACIC, reg);
+ ad1889_readw(chip, AD_AC97_ACIC); /* flush posted write */
+
+}
+
+static void
+snd_ad1889_ac97_bus_free(ac97_bus_t *bus)
+{
+ struct snd_ad1889 *chip = bus->private_data;
+ chip->ac97_bus = NULL;
+}
+
+static void
+snd_ad1889_ac97_free(ac97_t *ac97)
+{
+ struct snd_ad1889 *chip = ac97->private_data;
+ chip->ac97 = NULL;
+}
+
+static int __devinit
+snd_ad1889_ac97_init(struct snd_ad1889 *chip, const char *quirk_override)
+{
+ int err;
+ ac97_template_t ac97;
+ static ac97_bus_ops_t ops = {
+ .write = snd_ad1889_ac97_write,
+ .read = snd_ad1889_ac97_read,
+ };
+
+ /* doing that here, it works. */
+ snd_ad1889_ac97_xinit(chip);
+
+ err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus);
+ if (err < 0)
+ return err;
+
+ chip->ac97_bus->private_free = snd_ad1889_ac97_bus_free;
+
+ memset(&ac97, 0, sizeof(ac97));
+ ac97.private_data = chip;
+ ac97.private_free = snd_ad1889_ac97_free;
+ ac97.pci = chip->pci;
+
+ err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97);
+ if (err < 0)
+ return err;
+
+ snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
+
+ return 0;
+}
+
+static int
+snd_ad1889_free(struct snd_ad1889 *chip)
+{
+ if (chip->irq < 0)
+ goto skip_hw;
+
+ spin_lock_irq(&chip->lock);
+
+ ad1889_mute(chip);
+
+ /* Turn off interrupt on count and zero DMA registers */
+ ad1889_channel_reset(chip, AD_CHAN_WAV | AD_CHAN_ADC);
+
+ /* clear DISR. If we don't, we'd better jump off the Eiffel Tower */
+ ad1889_writel(chip, AD_DMA_DISR, AD_DMA_DISR_PTAI | AD_DMA_DISR_PMAI);
+ ad1889_readl(chip, AD_DMA_DISR); /* flush, dammit! */
+
+ spin_unlock_irq(&chip->lock);
+
+ synchronize_irq(chip->irq);
+
+ if (chip->irq >= 0)
+ free_irq(chip->irq, (void*)chip);
+
+skip_hw:
+ if (chip->iobase)
+ iounmap(chip->iobase);
+
+ pci_release_regions(chip->pci);
+ pci_disable_device(chip->pci);
+
+ kfree(chip);
+ return 0;
+}
+
+static inline int
+snd_ad1889_dev_free(snd_device_t *device)
+{
+ struct snd_ad1889 *chip = device->device_data;
+ return snd_ad1889_free(chip);
+}
+
+static int __devinit
+snd_ad1889_init(struct snd_ad1889 *chip)
+{
+ ad1889_writew(chip, AD_DS_CCS, AD_DS_CCS_CLKEN); /* turn on clock */
+ ad1889_readw(chip, AD_DS_CCS); /* flush posted write */
+
+ mdelay(10);
+
+ /* enable Master and Target abort interrupts */
+ ad1889_writel(chip, AD_DMA_DISR, AD_DMA_DISR_PMAE | AD_DMA_DISR_PTAE);
+
+ return 0;
+}
+
+static int __devinit
+snd_ad1889_create(snd_card_t *card,
+ struct pci_dev *pci,
+ struct snd_ad1889 **rchip)
+{
+ int err;
+
+ struct snd_ad1889 *chip;
+ static snd_device_ops_t ops = {
+ .dev_free = snd_ad1889_dev_free,
+ };
+
+ *rchip = NULL;
+
+ if ((err = pci_enable_device(pci)) < 0)
+ return err;
+
+ /* check PCI availability (32bit DMA) */
+ if (pci_set_dma_mask(pci, 0xffffffff) < 0 ||
+ pci_set_consistent_dma_mask(pci, 0xffffffff) < 0) {
+ printk(KERN_ERR PFX "error setting 32-bit DMA mask.\n");
+ pci_disable_device(pci);
+ return -ENXIO;
+ }
+
+ /* allocate chip specific data with zero-filled memory */
+ if ((chip = kcalloc(1, sizeof(*chip), GFP_KERNEL)) == NULL) {
+ pci_disable_device(pci);
+ return -ENOMEM;
+ }
+
+ chip->card = card;
+ card->private_data = chip;
+ chip->pci = pci;
+ chip->irq = -1;
+
+ /* (1) PCI resource allocation */
+ if ((err = pci_request_regions(pci, card->driver)) < 0)
+ goto free_and_ret;
+
+ chip->bar = pci_resource_start(pci, 0);
+ chip->iobase = ioremap_nocache(chip->bar, pci_resource_len(pci, 0));
+ if (chip->iobase == NULL) {
+ printk(KERN_ERR PFX "unable to reserve region.\n");
+ err = -EBUSY;
+ goto free_and_ret;
+ }
+
+ pci_set_master(pci);
+
+ spin_lock_init(&chip->lock); /* only now can we call ad1889_free */
+
+ if (request_irq(pci->irq, snd_ad1889_interrupt,
+ SA_INTERRUPT|SA_SHIRQ, card->driver, (void*)chip)) {
+ printk(KERN_ERR PFX "cannot obtain IRQ %d\n", pci->irq);
+ snd_ad1889_free(chip);
+ return -EBUSY;
+ }
+
+ chip->irq = pci->irq;
+ synchronize_irq(chip->irq);
+
+ /* (2) initialization of the chip hardware */
+ if ((err = snd_ad1889_init(chip)) < 0) {
+ snd_ad1889_free(chip);
+ return err;
+ }
+
+ if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
+ snd_ad1889_free(chip);
+ return err;
+ }
+
+ snd_card_set_dev(card, &pci->dev);
+
+ *rchip = chip;
+
+ return 0;
+
+free_and_ret:
+ if (chip)
+ kfree(chip);
+ pci_disable_device(pci);
+
+ return err;
+}
+
+static int __devinit
+snd_ad1889_probe(struct pci_dev *pci,
+ const struct pci_device_id *pci_id)
+{
+ int err;
+ static int devno;
+ snd_card_t *card;
+ struct snd_ad1889 *chip;
+
+ /* (1) */
+ if (devno >= SNDRV_CARDS)
+ return -ENODEV;
+ if (!enable[devno]) {
+ devno++;
+ return -ENOENT;
+ }
+
+ /* (2) */
+ card = snd_card_new(index[devno], id[devno], THIS_MODULE, 0);
+ /* XXX REVISIT: we can probably allocate chip in this call */
+ if (card == NULL)
+ return -ENOMEM;
+
+ strcpy(card->driver, "AD1889");
+ strcpy(card->shortname, "Analog Devices AD1889");
+
+ /* (3) */
+ err = snd_ad1889_create(card, pci, &chip);
+ if (err < 0)
+ goto free_and_ret;
+
+ /* (4) */
+ sprintf(card->longname, "%s at 0x%lx irq %i",
+ card->shortname, chip->bar, chip->irq);
+
+ /* (5) */
+ /* register AC97 mixer */
+ err = snd_ad1889_ac97_init(chip, ac97_quirk[devno]);
+ if (err < 0)
+ goto free_and_ret;
+
+ err = snd_ad1889_pcm_init(chip, 0, NULL);
+ if (err < 0)
+ goto free_and_ret;
+
+ /* register proc interface */
+ snd_ad1889_proc_init(chip);
+
+ /* (6) */
+ err = snd_card_register(card);
+ if (err < 0)
+ goto free_and_ret;
+
+ /* (7) */
+ pci_set_drvdata(pci, card);
+
+ devno++;
+ return 0;
+
+free_and_ret:
+ snd_card_free(card);
+ return err;
+}
+
+static void __devexit
+snd_ad1889_remove(struct pci_dev *pci)
+{
+ snd_card_free(pci_get_drvdata(pci));
+ pci_set_drvdata(pci, NULL);
+}
+
+static struct pci_device_id snd_ad1889_ids[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_ANALOG_DEVICES, PCI_DEVICE_ID_AD1889JS) },
+ { 0, },
+};
+MODULE_DEVICE_TABLE(pci, snd_ad1889_ids);
+
+static struct pci_driver ad1889_pci = {
+ .name = "AD1889 Audio",
+ .id_table = snd_ad1889_ids,
+ .probe = snd_ad1889_probe,
+ .remove = __devexit_p(snd_ad1889_remove),
+};
+
+static int __init
+alsa_ad1889_init(void)
+{
+ return pci_register_driver(&ad1889_pci);
+}
+
+static void __exit
+alsa_ad1889_fini(void)
+{
+ pci_unregister_driver(&ad1889_pci);
+}
+
+module_init(alsa_ad1889_init);
+module_exit(alsa_ad1889_fini);
--- /dev/null
+/* Analog Devices 1889 audio driver
+ * Copyright (C) 2004, Kyle McMartin <kyle@parisc-linux.org>
+ */
+
+#ifndef __AD1889_H__
+#define __AD1889_H__
+
+#define AD_DS_WSMC 0x00 /* wave/synthesis channel mixer control */
+#define AD_DS_WSMC_SYEN 0x0004 /* synthesis channel enable */
+#define AD_DS_WSMC_SYRQ 0x0030 /* synth. fifo request point */
+#define AD_DS_WSMC_WA16 0x0100 /* wave channel 16bit select */
+#define AD_DS_WSMC_WAST 0x0200 /* wave channel stereo select */
+#define AD_DS_WSMC_WAEN 0x0400 /* wave channel enable */
+#define AD_DS_WSMC_WARQ 0x3000 /* wave fifo request point */
+
+#define AD_DS_RAMC 0x02 /* resampler/ADC channel mixer control */
+#define AD_DS_RAMC_AD16 0x0001 /* ADC channel 16bit select */
+#define AD_DS_RAMC_ADST 0x0002 /* ADC channel stereo select */
+#define AD_DS_RAMC_ADEN 0x0004 /* ADC channel enable */
+#define AD_DS_RAMC_ACRQ 0x0030 /* ADC fifo request point */
+#define AD_DS_RAMC_REEN 0x0400 /* resampler channel enable */
+#define AD_DS_RAMC_RERQ 0x3000 /* res. fifo request point */
+
+#define AD_DS_WADA 0x04 /* wave channel mix attenuation */
+#define AD_DS_WADA_RWAM 0x0080 /* right wave mute */
+#define AD_DS_WADA_RWAA 0x001f /* right wave attenuation */
+#define AD_DS_WADA_LWAM 0x8000 /* left wave mute */
+#define AD_DS_WADA_LWAA 0x3e00 /* left wave attenuation */
+
+#define AD_DS_SYDA 0x06 /* synthesis channel mix attenuation */
+#define AD_DS_SYDA_RSYM 0x0080 /* right synthesis mute */
+#define AD_DS_SYDA_RSYA 0x001f /* right synthesis attenuation */
+#define AD_DS_SYDA_LSYM 0x8000 /* left synthesis mute */
+#define AD_DS_SYDA_LSYA 0x3e00 /* left synthesis attenuation */
+
+#define AD_DS_WAS 0x08 /* wave channel sample rate */
+#define AD_DS_WAS_WAS 0xffff /* sample rate mask */
+
+#define AD_DS_RES 0x0a /* resampler channel sample rate */
+#define AD_DS_RES_RES 0xffff /* sample rate mask */
+
+#define AD_DS_CCS 0x0c /* chip control/status */
+#define AD_DS_CCS_ADO 0x0001 /* ADC channel overflow */
+#define AD_DS_CCS_REO 0x0002 /* resampler channel overflow */
+#define AD_DS_CCS_SYU 0x0004 /* synthesis channel underflow */
+#define AD_DS_CCS_WAU 0x0008 /* wave channel underflow */
+/* bits 4 -> 7, 9, 11 -> 14 reserved */
+#define AD_DS_CCS_XTD 0x0100 /* xtd delay control (4096 clock cycles) */
+#define AD_DS_CCS_PDALL 0x0400 /* power */
+#define AD_DS_CCS_CLKEN 0x8000 /* clock */
+
+#define AD_DMA_RESBA 0x40 /* RES base address */
+#define AD_DMA_RESCA 0x44 /* RES current address */
+#define AD_DMA_RESBC 0x48 /* RES base count */
+#define AD_DMA_RESCC 0x4c /* RES current count */
+
+#define AD_DMA_ADCBA 0x50 /* ADC base address */
+#define AD_DMA_ADCCA 0x54 /* ADC current address */
+#define AD_DMA_ADCBC 0x58 /* ADC base count */
+#define AD_DMA_ADCCC 0x5c /* ADC current count */
+
+#define AD_DMA_SYNBA 0x60 /* synth base address */
+#define AD_DMA_SYNCA 0x64 /* synth current address */
+#define AD_DMA_SYNBC 0x68 /* synth base count */
+#define AD_DMA_SYNCC 0x6c /* synth current count */
+
+#define AD_DMA_WAVBA 0x70 /* wave base address */
+#define AD_DMA_WAVCA 0x74 /* wave current address */
+#define AD_DMA_WAVBC 0x78 /* wave base count */
+#define AD_DMA_WAVCC 0x7c /* wave current count */
+
+#define AD_DMA_RESIC 0x80 /* RES dma interrupt current byte count */
+#define AD_DMA_RESIB 0x84 /* RES dma interrupt base byte count */
+
+#define AD_DMA_ADCIC 0x88 /* ADC dma interrupt current byte count */
+#define AD_DMA_ADCIB 0x8c /* ADC dma interrupt base byte count */
+
+#define AD_DMA_SYNIC 0x90 /* synth dma interrupt current byte count */
+#define AD_DMA_SYNIB 0x94 /* synth dma interrupt base byte count */
+
+#define AD_DMA_WAVIC 0x98 /* wave dma interrupt current byte count */
+#define AD_DMA_WAVIB 0x9c /* wave dma interrupt base byte count */
+
+#define AD_DMA_ICC 0xffffff /* current byte count mask */
+#define AD_DMA_IBC 0xffffff /* base byte count mask */
+/* bits 24 -> 31 reserved */
+
+/* 4 bytes pad */
+#define AD_DMA_ADC 0xa8 /* ADC dma control and status */
+#define AD_DMA_SYNTH 0xb0 /* Synth dma control and status */
+#define AD_DMA_WAV 0xb8 /* wave dma control and status */
+#define AD_DMA_RES 0xa0 /* Resample dma control and status */
+
+#define AD_DMA_SGDE 0x0001 /* SGD mode enable */
+#define AD_DMA_LOOP 0x0002 /* loop enable */
+#define AD_DMA_IM 0x000c /* interrupt mode mask */
+#define AD_DMA_IM_DIS (~AD_DMA_IM) /* disable */
+#define AD_DMA_IM_CNT 0x0004 /* interrupt on count */
+#define AD_DMA_IM_SGD 0x0008 /* interrupt on SGD flag */
+#define AD_DMA_IM_EOL 0x000c /* interrupt on End of Linked List */
+#define AD_DMA_SGDS 0x0030 /* SGD status */
+#define AD_DMA_SFLG 0x0040 /* SGD flag */
+#define AD_DMA_EOL 0x0080 /* SGD end of list */
+/* bits 8 -> 15 reserved */
+
+#define AD_DMA_DISR 0xc0 /* dma interrupt status */
+#define AD_DMA_DISR_RESI 0x000001 /* resampler channel interrupt */
+#define AD_DMA_DISR_ADCI 0x000002 /* ADC channel interrupt */
+#define AD_DMA_DISR_SYNI 0x000004 /* synthesis channel interrupt */
+#define AD_DMA_DISR_WAVI 0x000008 /* wave channel interrupt */
+/* bits 4, 5 reserved */
+#define AD_DMA_DISR_SEPS 0x000040 /* serial eeprom status */
+/* bits 7 -> 13 reserved */
+#define AD_DMA_DISR_PMAI 0x004000 /* pci master abort interrupt */
+#define AD_DMA_DISR_PTAI 0x008000 /* pci target abort interrupt */
+#define AD_DMA_DISR_PTAE 0x010000 /* pci target abort interrupt enable */
+#define AD_DMA_DISR_PMAE 0x020000 /* pci master abort interrupt enable */
+/* bits 19 -> 31 reserved */
+
+/* interrupt mask */
+#define AD_INTR_MASK (AD_DMA_DISR_RESI|AD_DMA_DISR_ADCI| \
+ AD_DMA_DISR_WAVI|AD_DMA_DISR_SYNI| \
+ AD_DMA_DISR_PMAI|AD_DMA_DISR_PTAI)
+
+#define AD_DMA_CHSS 0xc4 /* dma channel stop status */
+#define AD_DMA_CHSS_RESS 0x000001 /* resampler channel stopped */
+#define AD_DMA_CHSS_ADCS 0x000002 /* ADC channel stopped */
+#define AD_DMA_CHSS_SYNS 0x000004 /* synthesis channel stopped */
+#define AD_DMA_CHSS_WAVS 0x000008 /* wave channel stopped */
+
+#define AD_GPIO_IPC 0xc8 /* gpio port control */
+#define AD_GPIO_OP 0xca /* gpio output port status */
+#define AD_GPIO_IP 0xcc /* gpio input port status */
+
+#define AD_AC97_BASE 0x100 /* ac97 base register */
+
+#define AD_AC97_RESET 0x100 /* reset */
+
+#define AD_AC97_PWR_CTL 0x126 /* == AC97_POWERDOWN */
+#define AD_AC97_PWR_ADC 0x0001 /* ADC ready status */
+#define AD_AC97_PWR_DAC 0x0002 /* DAC ready status */
+#define AD_AC97_PWR_PR0 0x0100 /* PR0 (ADC) powerdown */
+#define AD_AC97_PWR_PR1 0x0200 /* PR1 (DAC) powerdown */
+
+#define AD_MISC_CTL 0x176 /* misc control */
+#define AD_MISC_CTL_DACZ 0x8000 /* set for zero fill, unset for repeat */
+#define AD_MISC_CTL_ARSR 0x0001 /* set for SR1, unset for SR0 */
+#define AD_MISC_CTL_ALSR 0x0100
+#define AD_MISC_CTL_DLSR 0x0400
+#define AD_MISC_CTL_DRSR 0x0004
+
+#define AD_AC97_SR0 0x178 /* sample rate 0, 0xbb80 == 48K */
+#define AD_AC97_SR0_48K 0xbb80 /* 48KHz */
+#define AD_AC97_SR1 0x17a /* sample rate 1 */
+
+#define AD_AC97_ACIC 0x180 /* ac97 codec interface control */
+#define AD_AC97_ACIC_ACIE 0x0001 /* analog codec interface enable */
+#define AD_AC97_ACIC_ACRD 0x0002 /* analog codec reset disable */
+#define AD_AC97_ACIC_ASOE 0x0004 /* audio stream output enable */
+#define AD_AC97_ACIC_VSRM 0x0008 /* variable sample rate mode */
+#define AD_AC97_ACIC_FSDH 0x0100 /* force SDATA_OUT high */
+#define AD_AC97_ACIC_FSYH 0x0200 /* force sync high */
+#define AD_AC97_ACIC_ACRDY 0x8000 /* analog codec ready status */
+/* bits 10 -> 14 reserved */
+
+
+#define AD_DS_MEMSIZE 512
+#define AD_OPL_MEMSIZE 16
+#define AD_MIDI_MEMSIZE 16
+
+#define AD_WAV_STATE 0
+#define AD_ADC_STATE 1
+#define AD_MAX_STATES 2
+
+#define AD_CHAN_WAV 0x0001
+#define AD_CHAN_ADC 0x0002
+#define AD_CHAN_RES 0x0004
+#define AD_CHAN_SYN 0x0008
+
+
+/* The chip would support 4 GB buffers and 16 MB periods,
+ * but let's not overdo it ... */
+#define BUFFER_BYTES_MAX (256 * 1024)
+#define PERIOD_BYTES_MIN 32
+#define PERIOD_BYTES_MAX (BUFFER_BYTES_MAX / 2)
+#define PERIODS_MIN 2
+#define PERIODS_MAX (BUFFER_BYTES_MAX / PERIOD_BYTES_MIN)
+
+#endif /* __AD1889_H__ */
git://ftp.safe.ca / safe / jmp / linux-2.6 / commitdiff