--- /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 *a lot* of work)
+ */
+
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/compiler.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/io.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/initval.h>
+#include <sound/ac97_codec.h>
+
+#include "ad1889.h"
+#include "ac97/ac97_id.h"
+
+#define AD1889_DRVVER "Version: 1.7"
+
+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 bool 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 ": "
+
+/* 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 {
+ struct snd_card *card;
+ struct pci_dev *pci;
+
+ int irq;
+ unsigned long bar;
+ void __iomem *iobase;
+
+ struct snd_ac97 *ac97;
+ struct snd_ac97_bus *ac97_bus;
+ struct snd_pcm *pcm;
+ struct snd_info_entry *proc;
+
+ struct snd_pcm_substream *psubs;
+ struct snd_pcm_substream *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 u16
+snd_ad1889_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
+{
+ struct snd_ad1889 *chip = ac97->private_data;
+ return ad1889_readw(chip, AD_AC97_BASE + reg);
+}
+
+static void
+snd_ad1889_ac97_write(struct snd_ac97 *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) {
+ dev_err(chip->card->dev, "[%s] Link is not ready.\n",
+ __func__);
+ return -EIO;
+ }
+ dev_dbg(chip->card->dev, "[%s] ready after %d ms\n", __func__, 400 - retry);
+
+ return 0;
+}
+
+static int
+snd_ad1889_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params)
+{
+ return snd_pcm_lib_malloc_pages(substream,
+ params_buffer_bytes(hw_params));
+}
+
+static int
+snd_ad1889_hw_free(struct snd_pcm_substream *substream)
+{
+ return snd_pcm_lib_free_pages(substream);
+}
+
+static struct snd_pcm_hardware 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 struct snd_pcm_hardware 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(struct snd_pcm_substream *ss)
+{
+ struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+ struct snd_pcm_runtime *rt = ss->runtime;
+
+ chip->psubs = ss;
+ rt->hw = snd_ad1889_playback_hw;
+
+ return 0;
+}
+
+static int
+snd_ad1889_capture_open(struct snd_pcm_substream *ss)
+{
+ struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+ struct snd_pcm_runtime *rt = ss->runtime;
+
+ chip->csubs = ss;
+ rt->hw = snd_ad1889_capture_hw;
+
+ return 0;
+}
+
+static int
+snd_ad1889_playback_close(struct snd_pcm_substream *ss)
+{
+ struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+ chip->psubs = NULL;
+ return 0;
+}
+
+static int
+snd_ad1889_capture_close(struct snd_pcm_substream *ss)
+{
+ struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+ chip->csubs = NULL;
+ return 0;
+}
+
+static int
+snd_ad1889_playback_prepare(struct snd_pcm_substream *ss)
+{
+ struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+ struct snd_pcm_runtime *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);
+
+ dev_dbg(chip->card->dev,
+ "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(struct snd_pcm_substream *ss)
+{
+ struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
+ struct snd_pcm_runtime *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);
+
+ dev_dbg(chip->card->dev,
+ "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(struct snd_pcm_substream *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(struct snd_pcm_substream *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(struct snd_pcm_substream *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;
+
+ if (snd_BUG_ON(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(struct snd_pcm_substream *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;
+
+ if (snd_BUG_ON(ptr >= chip->ramc.size))
+ return 0;
+
+ return bytes_to_frames(ss->runtime, ptr);
+}
+
+static struct snd_pcm_ops 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 struct snd_pcm_ops 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)
+{
+ 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))
+ dev_dbg(chip->card->dev,
+ "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 int
+snd_ad1889_pcm_init(struct snd_ad1889 *chip, int device)
+{
+ int err;
+ struct snd_pcm *pcm;
+
+ 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->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) {
+ dev_err(chip->card->dev, "buffer allocation error: %d\n", err);
+ return err;
+ }
+
+ return 0;
+}
+
+static void
+snd_ad1889_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *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) * 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
+snd_ad1889_proc_init(struct snd_ad1889 *chip)
+{
+ struct snd_info_entry *entry;
+
+ if (!snd_card_proc_new(chip->card, chip->card->driver, &entry))
+ snd_info_set_text_ops(entry, chip, snd_ad1889_proc_read);
+}
+
+static const 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
+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(struct snd_ac97_bus *bus)
+{
+ struct snd_ad1889 *chip = bus->private_data;
+ chip->ac97_bus = NULL;
+}
+
+static void
+snd_ad1889_ac97_free(struct snd_ac97 *ac97)
+{
+ struct snd_ad1889 *chip = ac97->private_data;
+ chip->ac97 = NULL;
+}
+
+static int
+snd_ad1889_ac97_init(struct snd_ad1889 *chip, const char *quirk_override)
+{
+ int err;
+ struct snd_ac97_template ac97;
+ static struct snd_ac97_bus_ops 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);
+
+ if (chip->irq >= 0)
+ free_irq(chip->irq, chip);
+
+skip_hw:
+ iounmap(chip->iobase);
+ pci_release_regions(chip->pci);
+ pci_disable_device(chip->pci);
+ kfree(chip);
+ return 0;
+}
+
+static int
+snd_ad1889_dev_free(struct snd_device *device)
+{
+ struct snd_ad1889 *chip = device->device_data;
+ return snd_ad1889_free(chip);
+}
+
+static int
+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
+snd_ad1889_create(struct snd_card *card,
+ struct pci_dev *pci,
+ struct snd_ad1889 **rchip)
+{
+ int err;
+
+ struct snd_ad1889 *chip;
+ static struct snd_device_ops 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, DMA_BIT_MASK(32)) < 0 ||
+ pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(32)) < 0) {
+ dev_err(card->dev, "error setting 32-bit DMA mask.\n");
+ pci_disable_device(pci);
+ return -ENXIO;
+ }
+
+ /* allocate chip specific data with zero-filled memory */
+ if ((chip = kzalloc(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 = pci_ioremap_bar(pci, 0);
+ if (chip->iobase == NULL) {
+ dev_err(card->dev, "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,
+ IRQF_SHARED, KBUILD_MODNAME, chip)) {
+ dev_err(card->dev, "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;
+ }
+
+ *rchip = chip;
+
+ return 0;
+
+free_and_ret:
+ kfree(chip);
+ pci_disable_device(pci);
+
+ return err;
+}
+
+static int
+snd_ad1889_probe(struct pci_dev *pci,
+ const struct pci_device_id *pci_id)
+{
+ int err;
+ static int devno;
+ struct snd_card *card;
+ struct snd_ad1889 *chip;
+
+ /* (1) */
+ if (devno >= SNDRV_CARDS)
+ return -ENODEV;
+ if (!enable[devno]) {
+ devno++;
+ return -ENOENT;
+ }
+
+ /* (2) */
+ err = snd_card_new(&pci->dev, index[devno], id[devno], THIS_MODULE,
+ 0, &card);
+ /* XXX REVISIT: we can probably allocate chip in this call */
+ if (err < 0)
+ return err;
+
+ 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);
+ 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
+snd_ad1889_remove(struct pci_dev *pci)
+{
+ snd_card_free(pci_get_drvdata(pci));
+}
+
+static const 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_driver = {
+ .name = KBUILD_MODNAME,
+ .id_table = snd_ad1889_ids,
+ .probe = snd_ad1889_probe,
+ .remove = snd_ad1889_remove,
+};
+
+module_pci_driver(ad1889_pci_driver);
Code Review / kvmfornfv.git / blobdiff