Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/sound/pci/atiixp_modem.c b/sound/pci/atiixp_modem.c
new file mode 100644
index 0000000..5d3e537
--- /dev/null
+++ b/sound/pci/atiixp_modem.c
@@ -0,0 +1,1344 @@
+/*
+ * ALSA driver for ATI IXP 150/200/250 AC97 modem controllers
+ *
+ * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <sound/driver.h>
+#include <asm/io.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/moduleparam.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/info.h>
+#include <sound/ac97_codec.h>
+#include <sound/initval.h>
+
+MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
+MODULE_DESCRIPTION("ATI IXP MC97 controller");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("{{ATI,IXP150/200/250}}");
+
+static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* Exclude the first card */
+static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
+static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
+static int ac97_clock[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 48000};
+
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "Index value for ATI IXP controller.");
+module_param_array(id, charp, NULL, 0444);
+MODULE_PARM_DESC(id, "ID string for ATI IXP controller.");
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "Enable audio part of ATI IXP controller.");
+module_param_array(ac97_clock, int, NULL, 0444);
+MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
+
+
+/*
+ */
+
+#define ATI_REG_ISR 0x00 /* interrupt source */
+#define ATI_REG_ISR_MODEM_IN_XRUN (1U<<0)
+#define ATI_REG_ISR_MODEM_IN_STATUS (1U<<1)
+#define ATI_REG_ISR_MODEM_OUT1_XRUN (1U<<2)
+#define ATI_REG_ISR_MODEM_OUT1_STATUS (1U<<3)
+#define ATI_REG_ISR_MODEM_OUT2_XRUN (1U<<4)
+#define ATI_REG_ISR_MODEM_OUT2_STATUS (1U<<5)
+#define ATI_REG_ISR_MODEM_OUT3_XRUN (1U<<6)
+#define ATI_REG_ISR_MODEM_OUT3_STATUS (1U<<7)
+#define ATI_REG_ISR_PHYS_INTR (1U<<8)
+#define ATI_REG_ISR_PHYS_MISMATCH (1U<<9)
+#define ATI_REG_ISR_CODEC0_NOT_READY (1U<<10)
+#define ATI_REG_ISR_CODEC1_NOT_READY (1U<<11)
+#define ATI_REG_ISR_CODEC2_NOT_READY (1U<<12)
+#define ATI_REG_ISR_NEW_FRAME (1U<<13)
+#define ATI_REG_ISR_MODEM_GPIO_DATA (1U<<14)
+
+#define ATI_REG_IER 0x04 /* interrupt enable */
+#define ATI_REG_IER_MODEM_IN_XRUN_EN (1U<<0)
+#define ATI_REG_IER_MODEM_STATUS_EN (1U<<1)
+#define ATI_REG_IER_MODEM_OUT1_XRUN_EN (1U<<2)
+#define ATI_REG_IER_MODEM_OUT2_XRUN_EN (1U<<4)
+#define ATI_REG_IER_MODEM_OUT3_XRUN_EN (1U<<6)
+#define ATI_REG_IER_PHYS_INTR_EN (1U<<8)
+#define ATI_REG_IER_PHYS_MISMATCH_EN (1U<<9)
+#define ATI_REG_IER_CODEC0_INTR_EN (1U<<10)
+#define ATI_REG_IER_CODEC1_INTR_EN (1U<<11)
+#define ATI_REG_IER_CODEC2_INTR_EN (1U<<12)
+#define ATI_REG_IER_NEW_FRAME_EN (1U<<13) /* (RO */
+#define ATI_REG_IER_MODEM_GPIO_DATA_EN (1U<<14) /* (WO) modem is running */
+#define ATI_REG_IER_MODEM_SET_BUS_BUSY (1U<<15)
+
+#define ATI_REG_CMD 0x08 /* command */
+#define ATI_REG_CMD_POWERDOWN (1U<<0)
+#define ATI_REG_CMD_MODEM_RECEIVE_EN (1U<<1) /* modem only */
+#define ATI_REG_CMD_MODEM_SEND1_EN (1U<<2) /* modem only */
+#define ATI_REG_CMD_MODEM_SEND2_EN (1U<<3) /* modem only */
+#define ATI_REG_CMD_MODEM_SEND3_EN (1U<<4) /* modem only */
+#define ATI_REG_CMD_MODEM_STATUS_MEM (1U<<5) /* modem only */
+#define ATI_REG_CMD_MODEM_IN_DMA_EN (1U<<8) /* modem only */
+#define ATI_REG_CMD_MODEM_OUT_DMA1_EN (1U<<9) /* modem only */
+#define ATI_REG_CMD_MODEM_OUT_DMA2_EN (1U<<10) /* modem only */
+#define ATI_REG_CMD_MODEM_OUT_DMA3_EN (1U<<11) /* modem only */
+#define ATI_REG_CMD_AUDIO_PRESENT (1U<<20)
+#define ATI_REG_CMD_MODEM_GPIO_THRU_DMA (1U<<22) /* modem only */
+#define ATI_REG_CMD_LOOPBACK_EN (1U<<23)
+#define ATI_REG_CMD_PACKED_DIS (1U<<24)
+#define ATI_REG_CMD_BURST_EN (1U<<25)
+#define ATI_REG_CMD_PANIC_EN (1U<<26)
+#define ATI_REG_CMD_MODEM_PRESENT (1U<<27)
+#define ATI_REG_CMD_ACLINK_ACTIVE (1U<<28)
+#define ATI_REG_CMD_AC_SOFT_RESET (1U<<29)
+#define ATI_REG_CMD_AC_SYNC (1U<<30)
+#define ATI_REG_CMD_AC_RESET (1U<<31)
+
+#define ATI_REG_PHYS_OUT_ADDR 0x0c
+#define ATI_REG_PHYS_OUT_CODEC_MASK (3U<<0)
+#define ATI_REG_PHYS_OUT_RW (1U<<2)
+#define ATI_REG_PHYS_OUT_ADDR_EN (1U<<8)
+#define ATI_REG_PHYS_OUT_ADDR_SHIFT 9
+#define ATI_REG_PHYS_OUT_DATA_SHIFT 16
+
+#define ATI_REG_PHYS_IN_ADDR 0x10
+#define ATI_REG_PHYS_IN_READ_FLAG (1U<<8)
+#define ATI_REG_PHYS_IN_ADDR_SHIFT 9
+#define ATI_REG_PHYS_IN_DATA_SHIFT 16
+
+#define ATI_REG_SLOTREQ 0x14
+
+#define ATI_REG_COUNTER 0x18
+#define ATI_REG_COUNTER_SLOT (3U<<0) /* slot # */
+#define ATI_REG_COUNTER_BITCLOCK (31U<<8)
+
+#define ATI_REG_IN_FIFO_THRESHOLD 0x1c
+
+#define ATI_REG_MODEM_IN_DMA_LINKPTR 0x20
+#define ATI_REG_MODEM_IN_DMA_DT_START 0x24 /* RO */
+#define ATI_REG_MODEM_IN_DMA_DT_NEXT 0x28 /* RO */
+#define ATI_REG_MODEM_IN_DMA_DT_CUR 0x2c /* RO */
+#define ATI_REG_MODEM_IN_DMA_DT_SIZE 0x30
+#define ATI_REG_MODEM_OUT_FIFO 0x34 /* output threshold */
+#define ATI_REG_MODEM_OUT1_DMA_THRESHOLD_MASK (0xf<<16)
+#define ATI_REG_MODEM_OUT1_DMA_THRESHOLD_SHIFT 16
+#define ATI_REG_MODEM_OUT_DMA1_LINKPTR 0x38
+#define ATI_REG_MODEM_OUT_DMA2_LINKPTR 0x3c
+#define ATI_REG_MODEM_OUT_DMA3_LINKPTR 0x40
+#define ATI_REG_MODEM_OUT_DMA1_DT_START 0x44
+#define ATI_REG_MODEM_OUT_DMA1_DT_NEXT 0x48
+#define ATI_REG_MODEM_OUT_DMA1_DT_CUR 0x4c
+#define ATI_REG_MODEM_OUT_DMA2_DT_START 0x50
+#define ATI_REG_MODEM_OUT_DMA2_DT_NEXT 0x54
+#define ATI_REG_MODEM_OUT_DMA2_DT_CUR 0x58
+#define ATI_REG_MODEM_OUT_DMA3_DT_START 0x5c
+#define ATI_REG_MODEM_OUT_DMA3_DT_NEXT 0x60
+#define ATI_REG_MODEM_OUT_DMA3_DT_CUR 0x64
+#define ATI_REG_MODEM_OUT_DMA12_DT_SIZE 0x68
+#define ATI_REG_MODEM_OUT_DMA3_DT_SIZE 0x6c
+#define ATI_REG_MODEM_OUT_FIFO_USED 0x70
+#define ATI_REG_MODEM_OUT_GPIO 0x74
+#define ATI_REG_MODEM_OUT_GPIO_EN 1
+#define ATI_REG_MODEM_OUT_GPIO_DATA_SHIFT 5
+#define ATI_REG_MODEM_IN_GPIO 0x78
+
+#define ATI_REG_MODEM_MIRROR 0x7c
+#define ATI_REG_AUDIO_MIRROR 0x80
+
+#define ATI_REG_MODEM_FIFO_FLUSH 0x88
+#define ATI_REG_MODEM_FIFO_OUT1_FLUSH (1U<<0)
+#define ATI_REG_MODEM_FIFO_OUT2_FLUSH (1U<<1)
+#define ATI_REG_MODEM_FIFO_OUT3_FLUSH (1U<<2)
+#define ATI_REG_MODEM_FIFO_IN_FLUSH (1U<<3)
+
+/* LINKPTR */
+#define ATI_REG_LINKPTR_EN (1U<<0)
+
+#define ATI_MAX_DESCRIPTORS 256 /* max number of descriptor packets */
+
+
+/*
+ */
+
+typedef struct snd_atiixp atiixp_t;
+typedef struct snd_atiixp_dma atiixp_dma_t;
+typedef struct snd_atiixp_dma_ops atiixp_dma_ops_t;
+
+
+/*
+ * DMA packate descriptor
+ */
+
+typedef struct atiixp_dma_desc {
+ u32 addr; /* DMA buffer address */
+ u16 status; /* status bits */
+ u16 size; /* size of the packet in dwords */
+ u32 next; /* address of the next packet descriptor */
+} atiixp_dma_desc_t;
+
+/*
+ * stream enum
+ */
+enum { ATI_DMA_PLAYBACK, ATI_DMA_CAPTURE, NUM_ATI_DMAS }; /* DMAs */
+enum { ATI_PCM_OUT, ATI_PCM_IN, NUM_ATI_PCMS }; /* AC97 pcm slots */
+enum { ATI_PCMDEV_ANALOG, NUM_ATI_PCMDEVS }; /* pcm devices */
+
+#define NUM_ATI_CODECS 3
+
+
+/*
+ * constants and callbacks for each DMA type
+ */
+struct snd_atiixp_dma_ops {
+ int type; /* ATI_DMA_XXX */
+ unsigned int llp_offset; /* LINKPTR offset */
+ unsigned int dt_cur; /* DT_CUR offset */
+ void (*enable_dma)(atiixp_t *chip, int on); /* called from open callback */
+ void (*enable_transfer)(atiixp_t *chip, int on); /* called from trigger (START/STOP) */
+ void (*flush_dma)(atiixp_t *chip); /* called from trigger (STOP only) */
+};
+
+/*
+ * DMA stream
+ */
+struct snd_atiixp_dma {
+ const atiixp_dma_ops_t *ops;
+ struct snd_dma_buffer desc_buf;
+ snd_pcm_substream_t *substream; /* assigned PCM substream */
+ unsigned int buf_addr, buf_bytes; /* DMA buffer address, bytes */
+ unsigned int period_bytes, periods;
+ int opened;
+ int running;
+ int pcm_open_flag;
+ int ac97_pcm_type; /* index # of ac97_pcm to access, -1 = not used */
+};
+
+/*
+ * ATI IXP chip
+ */
+struct snd_atiixp {
+ snd_card_t *card;
+ struct pci_dev *pci;
+
+ struct resource *res; /* memory i/o */
+ unsigned long addr;
+ void __iomem *remap_addr;
+ int irq;
+
+ ac97_bus_t *ac97_bus;
+ ac97_t *ac97[NUM_ATI_CODECS];
+
+ spinlock_t reg_lock;
+
+ atiixp_dma_t dmas[NUM_ATI_DMAS];
+ struct ac97_pcm *pcms[NUM_ATI_PCMS];
+ snd_pcm_t *pcmdevs[NUM_ATI_PCMDEVS];
+
+ int max_channels; /* max. channels for PCM out */
+
+ unsigned int codec_not_ready_bits; /* for codec detection */
+
+ int spdif_over_aclink; /* passed from the module option */
+ struct semaphore open_mutex; /* playback open mutex */
+};
+
+
+/*
+ */
+static struct pci_device_id snd_atiixp_ids[] = {
+ { 0x1002, 0x434d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* SB200 */
+ { 0, }
+};
+
+MODULE_DEVICE_TABLE(pci, snd_atiixp_ids);
+
+
+/*
+ * lowlevel functions
+ */
+
+/*
+ * update the bits of the given register.
+ * return 1 if the bits changed.
+ */
+static int snd_atiixp_update_bits(atiixp_t *chip, unsigned int reg,
+ unsigned int mask, unsigned int value)
+{
+ void __iomem *addr = chip->remap_addr + reg;
+ unsigned int data, old_data;
+ old_data = data = readl(addr);
+ data &= ~mask;
+ data |= value;
+ if (old_data == data)
+ return 0;
+ writel(data, addr);
+ return 1;
+}
+
+/*
+ * macros for easy use
+ */
+#define atiixp_write(chip,reg,value) \
+ writel(value, chip->remap_addr + ATI_REG_##reg)
+#define atiixp_read(chip,reg) \
+ readl(chip->remap_addr + ATI_REG_##reg)
+#define atiixp_update(chip,reg,mask,val) \
+ snd_atiixp_update_bits(chip, ATI_REG_##reg, mask, val)
+
+/* delay for one tick */
+#define do_delay() do { \
+ set_current_state(TASK_UNINTERRUPTIBLE); \
+ schedule_timeout(1); \
+} while (0)
+
+
+/*
+ * handling DMA packets
+ *
+ * we allocate a linear buffer for the DMA, and split it to each packet.
+ * in a future version, a scatter-gather buffer should be implemented.
+ */
+
+#define ATI_DESC_LIST_SIZE \
+ PAGE_ALIGN(ATI_MAX_DESCRIPTORS * sizeof(atiixp_dma_desc_t))
+
+/*
+ * build packets ring for the given buffer size.
+ *
+ * IXP handles the buffer descriptors, which are connected as a linked
+ * list. although we can change the list dynamically, in this version,
+ * a static RING of buffer descriptors is used.
+ *
+ * the ring is built in this function, and is set up to the hardware.
+ */
+static int atiixp_build_dma_packets(atiixp_t *chip, atiixp_dma_t *dma,
+ snd_pcm_substream_t *substream,
+ unsigned int periods,
+ unsigned int period_bytes)
+{
+ unsigned int i;
+ u32 addr, desc_addr;
+ unsigned long flags;
+
+ if (periods > ATI_MAX_DESCRIPTORS)
+ return -ENOMEM;
+
+ if (dma->desc_buf.area == NULL) {
+ if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
+ ATI_DESC_LIST_SIZE, &dma->desc_buf) < 0)
+ return -ENOMEM;
+ dma->period_bytes = dma->periods = 0; /* clear */
+ }
+
+ if (dma->periods == periods && dma->period_bytes == period_bytes)
+ return 0;
+
+ /* reset DMA before changing the descriptor table */
+ spin_lock_irqsave(&chip->reg_lock, flags);
+ writel(0, chip->remap_addr + dma->ops->llp_offset);
+ dma->ops->enable_dma(chip, 0);
+ dma->ops->enable_dma(chip, 1);
+ spin_unlock_irqrestore(&chip->reg_lock, flags);
+
+ /* fill the entries */
+ addr = (u32)substream->runtime->dma_addr;
+ desc_addr = (u32)dma->desc_buf.addr;
+ for (i = 0; i < periods; i++) {
+ atiixp_dma_desc_t *desc = &((atiixp_dma_desc_t *)dma->desc_buf.area)[i];
+ desc->addr = cpu_to_le32(addr);
+ desc->status = 0;
+ desc->size = period_bytes >> 2; /* in dwords */
+ desc_addr += sizeof(atiixp_dma_desc_t);
+ if (i == periods - 1)
+ desc->next = cpu_to_le32((u32)dma->desc_buf.addr);
+ else
+ desc->next = cpu_to_le32(desc_addr);
+ addr += period_bytes;
+ }
+
+ writel((u32)dma->desc_buf.addr | ATI_REG_LINKPTR_EN,
+ chip->remap_addr + dma->ops->llp_offset);
+
+ dma->period_bytes = period_bytes;
+ dma->periods = periods;
+
+ return 0;
+}
+
+/*
+ * remove the ring buffer and release it if assigned
+ */
+static void atiixp_clear_dma_packets(atiixp_t *chip, atiixp_dma_t *dma, snd_pcm_substream_t *substream)
+{
+ if (dma->desc_buf.area) {
+ writel(0, chip->remap_addr + dma->ops->llp_offset);
+ snd_dma_free_pages(&dma->desc_buf);
+ dma->desc_buf.area = NULL;
+ }
+}
+
+/*
+ * AC97 interface
+ */
+static int snd_atiixp_acquire_codec(atiixp_t *chip)
+{
+ int timeout = 1000;
+
+ while (atiixp_read(chip, PHYS_OUT_ADDR) & ATI_REG_PHYS_OUT_ADDR_EN) {
+ if (! timeout--) {
+ snd_printk(KERN_WARNING "atiixp: codec acquire timeout\n");
+ return -EBUSY;
+ }
+ udelay(1);
+ }
+ return 0;
+}
+
+static unsigned short snd_atiixp_codec_read(atiixp_t *chip, unsigned short codec, unsigned short reg)
+{
+ unsigned int data;
+ int timeout;
+
+ if (snd_atiixp_acquire_codec(chip) < 0)
+ return 0xffff;
+ data = (reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
+ ATI_REG_PHYS_OUT_ADDR_EN |
+ ATI_REG_PHYS_OUT_RW |
+ codec;
+ atiixp_write(chip, PHYS_OUT_ADDR, data);
+ if (snd_atiixp_acquire_codec(chip) < 0)
+ return 0xffff;
+ timeout = 1000;
+ do {
+ data = atiixp_read(chip, PHYS_IN_ADDR);
+ if (data & ATI_REG_PHYS_IN_READ_FLAG)
+ return data >> ATI_REG_PHYS_IN_DATA_SHIFT;
+ udelay(1);
+ } while (--timeout);
+ /* time out may happen during reset */
+ if (reg < 0x7c)
+ snd_printk(KERN_WARNING "atiixp: codec read timeout (reg %x)\n", reg);
+ return 0xffff;
+}
+
+
+static void snd_atiixp_codec_write(atiixp_t *chip, unsigned short codec, unsigned short reg, unsigned short val)
+{
+ unsigned int data;
+
+ if (snd_atiixp_acquire_codec(chip) < 0)
+ return;
+ data = ((unsigned int)val << ATI_REG_PHYS_OUT_DATA_SHIFT) |
+ ((unsigned int)reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
+ ATI_REG_PHYS_OUT_ADDR_EN | codec;
+ atiixp_write(chip, PHYS_OUT_ADDR, data);
+}
+
+
+static unsigned short snd_atiixp_ac97_read(ac97_t *ac97, unsigned short reg)
+{
+ atiixp_t *chip = ac97->private_data;
+ return snd_atiixp_codec_read(chip, ac97->num, reg);
+
+}
+
+static void snd_atiixp_ac97_write(ac97_t *ac97, unsigned short reg, unsigned short val)
+{
+ atiixp_t *chip = ac97->private_data;
+ snd_atiixp_codec_write(chip, ac97->num, reg, val);
+}
+
+/*
+ * reset AC link
+ */
+static int snd_atiixp_aclink_reset(atiixp_t *chip)
+{
+ int timeout;
+
+ /* reset powerdoewn */
+ if (atiixp_update(chip, CMD, ATI_REG_CMD_POWERDOWN, 0))
+ udelay(10);
+
+ /* perform a software reset */
+ atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, ATI_REG_CMD_AC_SOFT_RESET);
+ atiixp_read(chip, CMD);
+ udelay(10);
+ atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, 0);
+
+ timeout = 10;
+ while (! (atiixp_read(chip, CMD) & ATI_REG_CMD_ACLINK_ACTIVE)) {
+ /* do a hard reset */
+ atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET,
+ ATI_REG_CMD_AC_SYNC);
+ atiixp_read(chip, CMD);
+ do_delay();
+ atiixp_update(chip, CMD, ATI_REG_CMD_AC_RESET, ATI_REG_CMD_AC_RESET);
+ if (--timeout) {
+ snd_printk(KERN_ERR "atiixp: codec reset timeout\n");
+ break;
+ }
+ }
+
+ /* deassert RESET and assert SYNC to make sure */
+ atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET,
+ ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int snd_atiixp_aclink_down(atiixp_t *chip)
+{
+ // if (atiixp_read(chip, MODEM_MIRROR) & 0x1) /* modem running, too? */
+ // return -EBUSY;
+ atiixp_update(chip, CMD,
+ ATI_REG_CMD_POWERDOWN | ATI_REG_CMD_AC_RESET,
+ ATI_REG_CMD_POWERDOWN);
+ return 0;
+}
+#endif
+
+/*
+ * auto-detection of codecs
+ *
+ * the IXP chip can generate interrupts for the non-existing codecs.
+ * NEW_FRAME interrupt is used to make sure that the interrupt is generated
+ * even if all three codecs are connected.
+ */
+
+#define ALL_CODEC_NOT_READY \
+ (ATI_REG_ISR_CODEC0_NOT_READY |\
+ ATI_REG_ISR_CODEC1_NOT_READY |\
+ ATI_REG_ISR_CODEC2_NOT_READY)
+#define CODEC_CHECK_BITS (ALL_CODEC_NOT_READY|ATI_REG_ISR_NEW_FRAME)
+
+static int snd_atiixp_codec_detect(atiixp_t *chip)
+{
+ int timeout;
+
+ chip->codec_not_ready_bits = 0;
+ atiixp_write(chip, IER, CODEC_CHECK_BITS);
+ /* wait for the interrupts */
+ timeout = HZ / 10;
+ while (timeout-- > 0) {
+ do_delay();
+ if (chip->codec_not_ready_bits)
+ break;
+ }
+ atiixp_write(chip, IER, 0); /* disable irqs */
+
+ if ((chip->codec_not_ready_bits & ALL_CODEC_NOT_READY) == ALL_CODEC_NOT_READY) {
+ snd_printk(KERN_ERR "atiixp: no codec detected!\n");
+ return -ENXIO;
+ }
+ return 0;
+}
+
+
+/*
+ * enable DMA and irqs
+ */
+static int snd_atiixp_chip_start(atiixp_t *chip)
+{
+ unsigned int reg;
+
+ /* set up spdif, enable burst mode */
+ reg = atiixp_read(chip, CMD);
+ reg |= ATI_REG_CMD_BURST_EN;
+ if(!(reg & ATI_REG_CMD_MODEM_PRESENT))
+ reg |= ATI_REG_CMD_MODEM_PRESENT;
+ atiixp_write(chip, CMD, reg);
+
+ /* clear all interrupt source */
+ atiixp_write(chip, ISR, 0xffffffff);
+ /* enable irqs */
+ atiixp_write(chip, IER,
+ ATI_REG_IER_MODEM_STATUS_EN |
+ ATI_REG_IER_MODEM_IN_XRUN_EN |
+ ATI_REG_IER_MODEM_OUT1_XRUN_EN);
+ return 0;
+}
+
+
+/*
+ * disable DMA and IRQs
+ */
+static int snd_atiixp_chip_stop(atiixp_t *chip)
+{
+ /* clear interrupt source */
+ atiixp_write(chip, ISR, atiixp_read(chip, ISR));
+ /* disable irqs */
+ atiixp_write(chip, IER, 0);
+ return 0;
+}
+
+
+/*
+ * PCM section
+ */
+
+/*
+ * pointer callback simplly reads XXX_DMA_DT_CUR register as the current
+ * position. when SG-buffer is implemented, the offset must be calculated
+ * correctly...
+ */
+static snd_pcm_uframes_t snd_atiixp_pcm_pointer(snd_pcm_substream_t *substream)
+{
+ atiixp_t *chip = snd_pcm_substream_chip(substream);
+ snd_pcm_runtime_t *runtime = substream->runtime;
+ atiixp_dma_t *dma = (atiixp_dma_t *)runtime->private_data;
+ unsigned int curptr;
+ int timeout = 1000;
+
+ while (timeout--) {
+ curptr = readl(chip->remap_addr + dma->ops->dt_cur);
+ if (curptr < dma->buf_addr)
+ continue;
+ curptr -= dma->buf_addr;
+ if (curptr >= dma->buf_bytes)
+ continue;
+ return bytes_to_frames(runtime, curptr);
+ }
+ snd_printd("atiixp-modem: invalid DMA pointer read 0x%x (buf=%x)\n",
+ readl(chip->remap_addr + dma->ops->dt_cur), dma->buf_addr);
+ return 0;
+}
+
+/*
+ * XRUN detected, and stop the PCM substream
+ */
+static void snd_atiixp_xrun_dma(atiixp_t *chip, atiixp_dma_t *dma)
+{
+ if (! dma->substream || ! dma->running)
+ return;
+ snd_printdd("atiixp: XRUN detected (DMA %d)\n", dma->ops->type);
+ snd_pcm_stop(dma->substream, SNDRV_PCM_STATE_XRUN);
+}
+
+/*
+ * the period ack. update the substream.
+ */
+static void snd_atiixp_update_dma(atiixp_t *chip, atiixp_dma_t *dma)
+{
+ if (! dma->substream || ! dma->running)
+ return;
+ snd_pcm_period_elapsed(dma->substream);
+}
+
+/* set BUS_BUSY interrupt bit if any DMA is running */
+/* call with spinlock held */
+static void snd_atiixp_check_bus_busy(atiixp_t *chip)
+{
+ unsigned int bus_busy;
+ if (atiixp_read(chip, CMD) & (ATI_REG_CMD_MODEM_SEND1_EN |
+ ATI_REG_CMD_MODEM_RECEIVE_EN))
+ bus_busy = ATI_REG_IER_MODEM_SET_BUS_BUSY;
+ else
+ bus_busy = 0;
+ atiixp_update(chip, IER, ATI_REG_IER_MODEM_SET_BUS_BUSY, bus_busy);
+}
+
+/* common trigger callback
+ * calling the lowlevel callbacks in it
+ */
+static int snd_atiixp_pcm_trigger(snd_pcm_substream_t *substream, int cmd)
+{
+ atiixp_t *chip = snd_pcm_substream_chip(substream);
+ atiixp_dma_t *dma = (atiixp_dma_t *)substream->runtime->private_data;
+ unsigned int reg = 0;
+ int i;
+
+ snd_assert(dma->ops->enable_transfer && dma->ops->flush_dma, return -EINVAL);
+
+ if (cmd != SNDRV_PCM_TRIGGER_START && cmd != SNDRV_PCM_TRIGGER_STOP)
+ return -EINVAL;
+
+ spin_lock(&chip->reg_lock);
+
+ /* hook off/on: via GPIO_OUT */
+ for (i = 0; i < NUM_ATI_CODECS; i++) {
+ if (chip->ac97[i]) {
+ reg = snd_ac97_read(chip->ac97[i], AC97_GPIO_STATUS);
+ break;
+ }
+ }
+ if(cmd == SNDRV_PCM_TRIGGER_START)
+ reg |= AC97_GPIO_LINE1_OH;
+ else
+ reg &= ~AC97_GPIO_LINE1_OH;
+ reg = (reg << ATI_REG_MODEM_OUT_GPIO_DATA_SHIFT) | ATI_REG_MODEM_OUT_GPIO_EN ;
+ atiixp_write(chip, MODEM_OUT_GPIO, reg);
+
+ if (cmd == SNDRV_PCM_TRIGGER_START) {
+ dma->ops->enable_transfer(chip, 1);
+ dma->running = 1;
+ } else {
+ dma->ops->enable_transfer(chip, 0);
+ dma->running = 0;
+ }
+ snd_atiixp_check_bus_busy(chip);
+ if (cmd == SNDRV_PCM_TRIGGER_STOP) {
+ dma->ops->flush_dma(chip);
+ snd_atiixp_check_bus_busy(chip);
+ }
+ spin_unlock(&chip->reg_lock);
+ return 0;
+}
+
+
+/*
+ * lowlevel callbacks for each DMA type
+ *
+ * every callback is supposed to be called in chip->reg_lock spinlock
+ */
+
+/* flush FIFO of analog OUT DMA */
+static void atiixp_out_flush_dma(atiixp_t *chip)
+{
+ atiixp_write(chip, MODEM_FIFO_FLUSH, ATI_REG_MODEM_FIFO_OUT1_FLUSH);
+}
+
+/* enable/disable analog OUT DMA */
+static void atiixp_out_enable_dma(atiixp_t *chip, int on)
+{
+ unsigned int data;
+ data = atiixp_read(chip, CMD);
+ if (on) {
+ if (data & ATI_REG_CMD_MODEM_OUT_DMA1_EN)
+ return;
+ atiixp_out_flush_dma(chip);
+ data |= ATI_REG_CMD_MODEM_OUT_DMA1_EN;
+ } else
+ data &= ~ATI_REG_CMD_MODEM_OUT_DMA1_EN;
+ atiixp_write(chip, CMD, data);
+}
+
+/* start/stop transfer over OUT DMA */
+static void atiixp_out_enable_transfer(atiixp_t *chip, int on)
+{
+ atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_SEND1_EN,
+ on ? ATI_REG_CMD_MODEM_SEND1_EN : 0);
+}
+
+/* enable/disable analog IN DMA */
+static void atiixp_in_enable_dma(atiixp_t *chip, int on)
+{
+ atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_IN_DMA_EN,
+ on ? ATI_REG_CMD_MODEM_IN_DMA_EN : 0);
+}
+
+/* start/stop analog IN DMA */
+static void atiixp_in_enable_transfer(atiixp_t *chip, int on)
+{
+ if (on) {
+ unsigned int data = atiixp_read(chip, CMD);
+ if (! (data & ATI_REG_CMD_MODEM_RECEIVE_EN)) {
+ data |= ATI_REG_CMD_MODEM_RECEIVE_EN;
+ atiixp_write(chip, CMD, data);
+ }
+ } else
+ atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_RECEIVE_EN, 0);
+}
+
+/* flush FIFO of analog IN DMA */
+static void atiixp_in_flush_dma(atiixp_t *chip)
+{
+ atiixp_write(chip, MODEM_FIFO_FLUSH, ATI_REG_MODEM_FIFO_IN_FLUSH);
+}
+
+/* set up slots and formats for analog OUT */
+static int snd_atiixp_playback_prepare(snd_pcm_substream_t *substream)
+{
+ atiixp_t *chip = snd_pcm_substream_chip(substream);
+ unsigned int data;
+
+ spin_lock_irq(&chip->reg_lock);
+ /* set output threshold */
+ data = atiixp_read(chip, MODEM_OUT_FIFO);
+ data &= ~ATI_REG_MODEM_OUT1_DMA_THRESHOLD_MASK;
+ data |= 0x04 << ATI_REG_MODEM_OUT1_DMA_THRESHOLD_SHIFT;
+ atiixp_write(chip, MODEM_OUT_FIFO, data);
+ spin_unlock_irq(&chip->reg_lock);
+ return 0;
+}
+
+/* set up slots and formats for analog IN */
+static int snd_atiixp_capture_prepare(snd_pcm_substream_t *substream)
+{
+ return 0;
+}
+
+/*
+ * hw_params - allocate the buffer and set up buffer descriptors
+ */
+static int snd_atiixp_pcm_hw_params(snd_pcm_substream_t *substream,
+ snd_pcm_hw_params_t *hw_params)
+{
+ atiixp_t *chip = snd_pcm_substream_chip(substream);
+ atiixp_dma_t *dma = (atiixp_dma_t *)substream->runtime->private_data;
+ int err;
+ int i;
+
+ err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
+ if (err < 0)
+ return err;
+ dma->buf_addr = substream->runtime->dma_addr;
+ dma->buf_bytes = params_buffer_bytes(hw_params);
+
+ err = atiixp_build_dma_packets(chip, dma, substream,
+ params_periods(hw_params),
+ params_period_bytes(hw_params));
+ if (err < 0)
+ return err;
+
+ /* set up modem rate */
+ for (i = 0; i < NUM_ATI_CODECS; i++) {
+ if (! chip->ac97[i])
+ continue;
+ snd_ac97_write(chip->ac97[i], AC97_LINE1_RATE, params_rate(hw_params));
+ snd_ac97_write(chip->ac97[i], AC97_LINE1_LEVEL, 0);
+ }
+
+ return err;
+}
+
+static int snd_atiixp_pcm_hw_free(snd_pcm_substream_t * substream)
+{
+ atiixp_t *chip = snd_pcm_substream_chip(substream);
+ atiixp_dma_t *dma = (atiixp_dma_t *)substream->runtime->private_data;
+
+ atiixp_clear_dma_packets(chip, dma, substream);
+ snd_pcm_lib_free_pages(substream);
+ return 0;
+}
+
+
+/*
+ * pcm hardware definition, identical for all DMA types
+ */
+static snd_pcm_hardware_t snd_atiixp_pcm_hw =
+{
+ .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_BLOCK_TRANSFER |
+ SNDRV_PCM_INFO_MMAP_VALID),
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT,
+ .rate_min = 8000,
+ .rate_max = 16000,
+ .channels_min = 2,
+ .channels_max = 2,
+ .buffer_bytes_max = 256 * 1024,
+ .period_bytes_min = 32,
+ .period_bytes_max = 128 * 1024,
+ .periods_min = 2,
+ .periods_max = ATI_MAX_DESCRIPTORS,
+};
+
+static int snd_atiixp_pcm_open(snd_pcm_substream_t *substream, atiixp_dma_t *dma, int pcm_type)
+{
+ atiixp_t *chip = snd_pcm_substream_chip(substream);
+ snd_pcm_runtime_t *runtime = substream->runtime;
+ int err;
+ static unsigned int rates[] = { 8000, 9600, 12000, 16000 };
+ static snd_pcm_hw_constraint_list_t hw_constraints_rates = {
+ .count = ARRAY_SIZE(rates),
+ .list = rates,
+ .mask = 0,
+ };
+
+ snd_assert(dma->ops && dma->ops->enable_dma, return -EINVAL);
+
+ if (dma->opened)
+ return -EBUSY;
+ dma->substream = substream;
+ runtime->hw = snd_atiixp_pcm_hw;
+ dma->ac97_pcm_type = pcm_type;
+ if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates)) < 0)
+ return err;
+ if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
+ return err;
+ runtime->private_data = dma;
+
+ /* enable DMA bits */
+ spin_lock_irq(&chip->reg_lock);
+ dma->ops->enable_dma(chip, 1);
+ spin_unlock_irq(&chip->reg_lock);
+ dma->opened = 1;
+
+ return 0;
+}
+
+static int snd_atiixp_pcm_close(snd_pcm_substream_t *substream, atiixp_dma_t *dma)
+{
+ atiixp_t *chip = snd_pcm_substream_chip(substream);
+ /* disable DMA bits */
+ snd_assert(dma->ops && dma->ops->enable_dma, return -EINVAL);
+ spin_lock_irq(&chip->reg_lock);
+ dma->ops->enable_dma(chip, 0);
+ spin_unlock_irq(&chip->reg_lock);
+ dma->substream = NULL;
+ dma->opened = 0;
+ return 0;
+}
+
+/*
+ */
+static int snd_atiixp_playback_open(snd_pcm_substream_t *substream)
+{
+ atiixp_t *chip = snd_pcm_substream_chip(substream);
+ int err;
+
+ down(&chip->open_mutex);
+ err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 0);
+ up(&chip->open_mutex);
+ if (err < 0)
+ return err;
+ return 0;
+}
+
+static int snd_atiixp_playback_close(snd_pcm_substream_t *substream)
+{
+ atiixp_t *chip = snd_pcm_substream_chip(substream);
+ int err;
+ down(&chip->open_mutex);
+ err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
+ up(&chip->open_mutex);
+ return err;
+}
+
+static int snd_atiixp_capture_open(snd_pcm_substream_t *substream)
+{
+ atiixp_t *chip = snd_pcm_substream_chip(substream);
+ return snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_CAPTURE], 1);
+}
+
+static int snd_atiixp_capture_close(snd_pcm_substream_t *substream)
+{
+ atiixp_t *chip = snd_pcm_substream_chip(substream);
+ return snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_CAPTURE]);
+}
+
+
+/* AC97 playback */
+static snd_pcm_ops_t snd_atiixp_playback_ops = {
+ .open = snd_atiixp_playback_open,
+ .close = snd_atiixp_playback_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_atiixp_pcm_hw_params,
+ .hw_free = snd_atiixp_pcm_hw_free,
+ .prepare = snd_atiixp_playback_prepare,
+ .trigger = snd_atiixp_pcm_trigger,
+ .pointer = snd_atiixp_pcm_pointer,
+};
+
+/* AC97 capture */
+static snd_pcm_ops_t snd_atiixp_capture_ops = {
+ .open = snd_atiixp_capture_open,
+ .close = snd_atiixp_capture_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_atiixp_pcm_hw_params,
+ .hw_free = snd_atiixp_pcm_hw_free,
+ .prepare = snd_atiixp_capture_prepare,
+ .trigger = snd_atiixp_pcm_trigger,
+ .pointer = snd_atiixp_pcm_pointer,
+};
+
+static atiixp_dma_ops_t snd_atiixp_playback_dma_ops = {
+ .type = ATI_DMA_PLAYBACK,
+ .llp_offset = ATI_REG_MODEM_OUT_DMA1_LINKPTR,
+ .dt_cur = ATI_REG_MODEM_OUT_DMA1_DT_CUR,
+ .enable_dma = atiixp_out_enable_dma,
+ .enable_transfer = atiixp_out_enable_transfer,
+ .flush_dma = atiixp_out_flush_dma,
+};
+
+static atiixp_dma_ops_t snd_atiixp_capture_dma_ops = {
+ .type = ATI_DMA_CAPTURE,
+ .llp_offset = ATI_REG_MODEM_IN_DMA_LINKPTR,
+ .dt_cur = ATI_REG_MODEM_IN_DMA_DT_CUR,
+ .enable_dma = atiixp_in_enable_dma,
+ .enable_transfer = atiixp_in_enable_transfer,
+ .flush_dma = atiixp_in_flush_dma,
+};
+
+static int __devinit snd_atiixp_pcm_new(atiixp_t *chip)
+{
+ snd_pcm_t *pcm;
+ int err;
+
+ /* initialize constants */
+ chip->dmas[ATI_DMA_PLAYBACK].ops = &snd_atiixp_playback_dma_ops;
+ chip->dmas[ATI_DMA_CAPTURE].ops = &snd_atiixp_capture_dma_ops;
+
+ /* PCM #0: analog I/O */
+ err = snd_pcm_new(chip->card, "ATI IXP MC97", ATI_PCMDEV_ANALOG, 1, 1, &pcm);
+ if (err < 0)
+ return err;
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_atiixp_playback_ops);
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_atiixp_capture_ops);
+ pcm->private_data = chip;
+ strcpy(pcm->name, "ATI IXP MC97");
+ chip->pcmdevs[ATI_PCMDEV_ANALOG] = pcm;
+
+ snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
+ snd_dma_pci_data(chip->pci), 64*1024, 128*1024);
+
+ return 0;
+}
+
+
+
+/*
+ * interrupt handler
+ */
+static irqreturn_t snd_atiixp_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ atiixp_t *chip = dev_id;
+ unsigned int status;
+
+ status = atiixp_read(chip, ISR);
+
+ if (! status)
+ return IRQ_NONE;
+
+ /* process audio DMA */
+ if (status & ATI_REG_ISR_MODEM_OUT1_XRUN)
+ snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]);
+ else if (status & ATI_REG_ISR_MODEM_OUT1_STATUS)
+ snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]);
+ if (status & ATI_REG_ISR_MODEM_IN_XRUN)
+ snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]);
+ else if (status & ATI_REG_ISR_MODEM_IN_STATUS)
+ snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]);
+
+ /* for codec detection */
+ if (status & CODEC_CHECK_BITS) {
+ unsigned int detected;
+ detected = status & CODEC_CHECK_BITS;
+ spin_lock(&chip->reg_lock);
+ chip->codec_not_ready_bits |= detected;
+ atiixp_update(chip, IER, detected, 0); /* disable the detected irqs */
+ spin_unlock(&chip->reg_lock);
+ }
+
+ /* ack */
+ atiixp_write(chip, ISR, status);
+
+ return IRQ_HANDLED;
+}
+
+
+/*
+ * ac97 mixer section
+ */
+
+static int __devinit snd_atiixp_mixer_new(atiixp_t *chip, int clock)
+{
+ ac97_bus_t *pbus;
+ ac97_template_t ac97;
+ int i, err;
+ int codec_count;
+ static ac97_bus_ops_t ops = {
+ .write = snd_atiixp_ac97_write,
+ .read = snd_atiixp_ac97_read,
+ };
+ static unsigned int codec_skip[NUM_ATI_CODECS] = {
+ ATI_REG_ISR_CODEC0_NOT_READY,
+ ATI_REG_ISR_CODEC1_NOT_READY,
+ ATI_REG_ISR_CODEC2_NOT_READY,
+ };
+
+ if (snd_atiixp_codec_detect(chip) < 0)
+ return -ENXIO;
+
+ if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus)) < 0)
+ return err;
+ pbus->clock = clock;
+ pbus->shared_type = AC97_SHARED_TYPE_ATIIXP; /* shared with audio driver */
+ chip->ac97_bus = pbus;
+
+ codec_count = 0;
+ for (i = 0; i < NUM_ATI_CODECS; i++) {
+ if (chip->codec_not_ready_bits & codec_skip[i])
+ continue;
+ memset(&ac97, 0, sizeof(ac97));
+ ac97.private_data = chip;
+ ac97.pci = chip->pci;
+ ac97.num = i;
+ ac97.scaps = AC97_SCAP_SKIP_AUDIO;
+ if ((err = snd_ac97_mixer(pbus, &ac97, &chip->ac97[i])) < 0) {
+ chip->ac97[i] = NULL; /* to be sure */
+ snd_printdd("atiixp: codec %d not available for modem\n", i);
+ continue;
+ }
+ codec_count++;
+ }
+
+ if (! codec_count) {
+ snd_printk(KERN_ERR "atiixp: no codec available\n");
+ return -ENODEV;
+ }
+
+ /* snd_ac97_tune_hardware(chip->ac97, ac97_quirks); */
+
+ return 0;
+}
+
+
+#ifdef CONFIG_PM
+/*
+ * power management
+ */
+static int snd_atiixp_suspend(snd_card_t *card, pm_message_t state)
+{
+ atiixp_t *chip = card->pm_private_data;
+ int i;
+
+ for (i = 0; i < NUM_ATI_PCMDEVS; i++)
+ if (chip->pcmdevs[i])
+ snd_pcm_suspend_all(chip->pcmdevs[i]);
+ for (i = 0; i < NUM_ATI_CODECS; i++)
+ if (chip->ac97[i])
+ snd_ac97_suspend(chip->ac97[i]);
+ snd_atiixp_aclink_down(chip);
+ snd_atiixp_chip_stop(chip);
+
+ pci_set_power_state(chip->pci, 3);
+ pci_disable_device(chip->pci);
+ return 0;
+}
+
+static int snd_atiixp_resume(snd_card_t *card)
+{
+ atiixp_t *chip = card->pm_private_data;
+ int i;
+
+ pci_enable_device(chip->pci);
+ pci_set_power_state(chip->pci, 0);
+ pci_set_master(chip->pci);
+
+ snd_atiixp_aclink_reset(chip);
+ snd_atiixp_chip_start(chip);
+
+ for (i = 0; i < NUM_ATI_CODECS; i++)
+ if (chip->ac97[i])
+ snd_ac97_resume(chip->ac97[i]);
+
+ return 0;
+}
+#endif /* CONFIG_PM */
+
+
+/*
+ * proc interface for register dump
+ */
+
+static void snd_atiixp_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
+{
+ atiixp_t *chip = entry->private_data;
+ int i;
+
+ for (i = 0; i < 256; i += 4)
+ snd_iprintf(buffer, "%02x: %08x\n", i, readl(chip->remap_addr + i));
+}
+
+static void __devinit snd_atiixp_proc_init(atiixp_t *chip)
+{
+ snd_info_entry_t *entry;
+
+ if (! snd_card_proc_new(chip->card, "atiixp", &entry))
+ snd_info_set_text_ops(entry, chip, 1024, snd_atiixp_proc_read);
+}
+
+
+
+/*
+ * destructor
+ */
+
+static int snd_atiixp_free(atiixp_t *chip)
+{
+ if (chip->irq < 0)
+ goto __hw_end;
+ snd_atiixp_chip_stop(chip);
+ synchronize_irq(chip->irq);
+ __hw_end:
+ if (chip->irq >= 0)
+ free_irq(chip->irq, (void *)chip);
+ if (chip->remap_addr)
+ iounmap(chip->remap_addr);
+ pci_release_regions(chip->pci);
+ pci_disable_device(chip->pci);
+ kfree(chip);
+ return 0;
+}
+
+static int snd_atiixp_dev_free(snd_device_t *device)
+{
+ atiixp_t *chip = device->device_data;
+ return snd_atiixp_free(chip);
+}
+
+/*
+ * constructor for chip instance
+ */
+static int __devinit snd_atiixp_create(snd_card_t *card,
+ struct pci_dev *pci,
+ atiixp_t **r_chip)
+{
+ static snd_device_ops_t ops = {
+ .dev_free = snd_atiixp_dev_free,
+ };
+ atiixp_t *chip;
+ int err;
+
+ if ((err = pci_enable_device(pci)) < 0)
+ return err;
+
+ chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
+ if (chip == NULL) {
+ pci_disable_device(pci);
+ return -ENOMEM;
+ }
+
+ spin_lock_init(&chip->reg_lock);
+ init_MUTEX(&chip->open_mutex);
+ chip->card = card;
+ chip->pci = pci;
+ chip->irq = -1;
+ if ((err = pci_request_regions(pci, "ATI IXP MC97")) < 0) {
+ kfree(chip);
+ pci_disable_device(pci);
+ return err;
+ }
+ chip->addr = pci_resource_start(pci, 0);
+ chip->remap_addr = ioremap_nocache(chip->addr, pci_resource_len(pci, 0));
+ if (chip->remap_addr == NULL) {
+ snd_printk(KERN_ERR "AC'97 space ioremap problem\n");
+ snd_atiixp_free(chip);
+ return -EIO;
+ }
+
+ if (request_irq(pci->irq, snd_atiixp_interrupt, SA_INTERRUPT|SA_SHIRQ, card->shortname, (void *)chip)) {
+ snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
+ snd_atiixp_free(chip);
+ return -EBUSY;
+ }
+ chip->irq = pci->irq;
+ pci_set_master(pci);
+ synchronize_irq(chip->irq);
+
+ if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
+ snd_atiixp_free(chip);
+ return err;
+ }
+
+ snd_card_set_dev(card, &pci->dev);
+
+ *r_chip = chip;
+ return 0;
+}
+
+
+static int __devinit snd_atiixp_probe(struct pci_dev *pci,
+ const struct pci_device_id *pci_id)
+{
+ static int dev;
+ snd_card_t *card;
+ atiixp_t *chip;
+ unsigned char revision;
+ int err;
+
+ if (dev >= SNDRV_CARDS)
+ return -ENODEV;
+ if (!enable[dev]) {
+ dev++;
+ return -ENOENT;
+ }
+
+ card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
+ if (card == NULL)
+ return -ENOMEM;
+
+ pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
+
+ strcpy(card->driver, "ATIIXP-MODEM");
+ strcpy(card->shortname, "ATI IXP Modem");
+ if ((err = snd_atiixp_create(card, pci, &chip)) < 0)
+ goto __error;
+
+ if ((err = snd_atiixp_aclink_reset(chip)) < 0)
+ goto __error;
+
+ if ((err = snd_atiixp_mixer_new(chip, ac97_clock[dev])) < 0)
+ goto __error;
+
+ if ((err = snd_atiixp_pcm_new(chip)) < 0)
+ goto __error;
+
+ snd_atiixp_proc_init(chip);
+
+ snd_atiixp_chip_start(chip);
+
+ sprintf(card->longname, "%s rev %x at 0x%lx, irq %i",
+ card->shortname, revision, chip->addr, chip->irq);
+
+ snd_card_set_pm_callback(card, snd_atiixp_suspend, snd_atiixp_resume, chip);
+
+ if ((err = snd_card_register(card)) < 0)
+ goto __error;
+
+ pci_set_drvdata(pci, card);
+ dev++;
+ return 0;
+
+ __error:
+ snd_card_free(card);
+ return err;
+}
+
+static void __devexit snd_atiixp_remove(struct pci_dev *pci)
+{
+ snd_card_free(pci_get_drvdata(pci));
+ pci_set_drvdata(pci, NULL);
+}
+
+static struct pci_driver driver = {
+ .name = "ATI IXP MC97 controller",
+ .id_table = snd_atiixp_ids,
+ .probe = snd_atiixp_probe,
+ .remove = __devexit_p(snd_atiixp_remove),
+ SND_PCI_PM_CALLBACKS
+};
+
+
+static int __init alsa_card_atiixp_init(void)
+{
+ return pci_module_init(&driver);
+}
+
+static void __exit alsa_card_atiixp_exit(void)
+{
+ pci_unregister_driver(&driver);
+}
+
+module_init(alsa_card_atiixp_init)
+module_exit(alsa_card_atiixp_exit)