--- /dev/null
+/*
+ * ALI ali5455 and friends ICH driver for Linux
+ * LEI HU <Lei_Hu@ali.com.tw>
+ *
+ * Built from:
+ * drivers/sound/i810_audio
+ *
+ * The ALi 5455 is similar but not quite identical to the Intel ICH
+ * series of controllers. Its easier to keep the driver separated from
+ * the i810 driver.
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ * ALi 5455 theory of operation
+ *
+ * The chipset provides three DMA channels that talk to an AC97
+ * CODEC (AC97 is a digital/analog mixer standard). At its simplest
+ * you get 48Khz audio with basic volume and mixer controls. At the
+ * best you get rate adaption in the codec. We set the card up so
+ * that we never take completion interrupts but instead keep the card
+ * chasing its tail around a ring buffer. This is needed for mmap
+ * mode audio and happens to work rather well for non-mmap modes too.
+ *
+ * The board has one output channel for PCM audio (supported) and
+ * a stereo line in and mono microphone input. Again these are normally
+ * locked to 48Khz only. Right now recording is not finished.
+ *
+ * There is no midi support, no synth support. Use timidity. To get
+ * esd working you need to use esd -r 48000 as it won't probe 48KHz
+ * by default. mpg123 can't handle 48Khz only audio so use xmms.
+ *
+ * If you need to force a specific rate set the clocking= option
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/version.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+#include <linux/ioport.h>
+#include <linux/sched.h>
+#include <linux/delay.h>
+#include <linux/sound.h>
+#include <linux/slab.h>
+#include <linux/soundcard.h>
+#include <linux/pci.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <linux/init.h>
+#include <linux/poll.h>
+#include <linux/spinlock.h>
+#include <linux/smp_lock.h>
+#include <linux/ac97_codec.h>
+#include <linux/interrupt.h>
+#include <asm/uaccess.h>
+#include <asm/hardirq.h>
+
+#ifndef PCI_DEVICE_ID_ALI_5455
+#define PCI_DEVICE_ID_ALI_5455 0x5455
+#endif
+
+#ifndef PCI_VENDOR_ID_ALI
+#define PCI_VENDOR_ID_ALI 0x10b9
+#endif
+
+static int strict_clocking = 0;
+static unsigned int clocking = 0;
+static unsigned int codec_pcmout_share_spdif_locked = 0;
+static unsigned int codec_independent_spdif_locked = 0;
+static unsigned int controller_pcmout_share_spdif_locked = 0;
+static unsigned int controller_independent_spdif_locked = 0;
+static unsigned int globel = 0;
+
+#define ADC_RUNNING 1
+#define DAC_RUNNING 2
+#define CODEC_SPDIFOUT_RUNNING 8
+#define CONTROLLER_SPDIFOUT_RUNNING 4
+
+#define SPDIF_ENABLE_OUTPUT 4 /* bits 0,1 are PCM */
+
+#define ALI5455_FMT_16BIT 1
+#define ALI5455_FMT_STEREO 2
+#define ALI5455_FMT_MASK 3
+
+#define SPDIF_ON 0x0004
+#define SURR_ON 0x0010
+#define CENTER_LFE_ON 0x0020
+#define VOL_MUTED 0x8000
+
+
+#define ALI_SPDIF_OUT_CH_STATUS 0xbf
+/* the 810's array of pointers to data buffers */
+
+struct sg_item {
+#define BUSADDR_MASK 0xFFFFFFFE
+ u32 busaddr;
+#define CON_IOC 0x80000000 /* interrupt on completion */
+#define CON_BUFPAD 0x40000000 /* pad underrun with last sample, else 0 */
+#define CON_BUFLEN_MASK 0x0000ffff /* buffer length in samples */
+ u32 control;
+};
+
+/* an instance of the ali channel */
+#define SG_LEN 32
+struct ali_channel {
+ /* these sg guys should probably be allocated
+ separately as nocache. Must be 8 byte aligned */
+ struct sg_item sg[SG_LEN]; /* 32*8 */
+ u32 offset; /* 4 */
+ u32 port; /* 4 */
+ u32 used;
+ u32 num;
+};
+
+/*
+ * we have 3 separate dma engines. pcm in, pcm out, and mic.
+ * each dma engine has controlling registers. These goofy
+ * names are from the datasheet, but make it easy to write
+ * code while leafing through it.
+ */
+
+#define ENUM_ENGINE(PRE,DIG) \
+enum { \
+ PRE##_BDBAR = 0x##DIG##0, /* Buffer Descriptor list Base Address */ \
+ PRE##_CIV = 0x##DIG##4, /* Current Index Value */ \
+ PRE##_LVI = 0x##DIG##5, /* Last Valid Index */ \
+ PRE##_SR = 0x##DIG##6, /* Status Register */ \
+ PRE##_PICB = 0x##DIG##8, /* Position In Current Buffer */ \
+ PRE##_CR = 0x##DIG##b /* Control Register */ \
+}
+
+ENUM_ENGINE(OFF, 0); /* Offsets */
+ENUM_ENGINE(PI, 4); /* PCM In */
+ENUM_ENGINE(PO, 5); /* PCM Out */
+ENUM_ENGINE(MC, 6); /* Mic In */
+ENUM_ENGINE(CODECSPDIFOUT, 7); /* CODEC SPDIF OUT */
+ENUM_ENGINE(CONTROLLERSPDIFIN, A); /* CONTROLLER SPDIF In */
+ENUM_ENGINE(CONTROLLERSPDIFOUT, B); /* CONTROLLER SPDIF OUT */
+
+
+enum {
+ ALI_SCR = 0x00, /* System Control Register */
+ ALI_SSR = 0x04, /* System Status Register */
+ ALI_DMACR = 0x08, /* DMA Control Register */
+ ALI_FIFOCR1 = 0x0c, /* FIFO Control Register 1 */
+ ALI_INTERFACECR = 0x10, /* Interface Control Register */
+ ALI_INTERRUPTCR = 0x14, /* Interrupt control Register */
+ ALI_INTERRUPTSR = 0x18, /* Interrupt Status Register */
+ ALI_FIFOCR2 = 0x1c, /* FIFO Control Register 2 */
+ ALI_CPR = 0x20, /* Command Port Register */
+ ALI_SPR = 0x24, /* Status Port Register */
+ ALI_FIFOCR3 = 0x2c, /* FIFO Control Register 3 */
+ ALI_TTSR = 0x30, /* Transmit Tag Slot Register */
+ ALI_RTSR = 0x34, /* Receive Tag Slot Register */
+ ALI_CSPSR = 0x38, /* Command/Status Port Status Register */
+ ALI_CAS = 0x3c, /* Codec Write Semaphore Register */
+ ALI_SPDIFCSR = 0xf8, /* spdif channel status register */
+ ALI_SPDIFICS = 0xfc /* spdif interface control/status */
+};
+
+// x-status register(x:pcm in ,pcm out, mic in,)
+/* interrupts for a dma engine */
+#define DMA_INT_FIFO (1<<4) /* fifo under/over flow */
+#define DMA_INT_COMPLETE (1<<3) /* buffer read/write complete and ioc set */
+#define DMA_INT_LVI (1<<2) /* last valid done */
+#define DMA_INT_CELV (1<<1) /* last valid is current */
+#define DMA_INT_DCH (1) /* DMA Controller Halted (happens on LVI interrupts) */ //not eqult intel
+#define DMA_INT_MASK (DMA_INT_FIFO|DMA_INT_COMPLETE|DMA_INT_LVI)
+
+/* interrupts for the whole chip */// by interrupt status register finish
+
+#define INT_SPDIFOUT (1<<23) /* controller spdif out INTERRUPT */
+#define INT_SPDIFIN (1<<22)
+#define INT_CODECSPDIFOUT (1<<19)
+#define INT_MICIN (1<<18)
+#define INT_PCMOUT (1<<17)
+#define INT_PCMIN (1<<16)
+#define INT_CPRAIS (1<<7)
+#define INT_SPRAIS (1<<5)
+#define INT_GPIO (1<<1)
+#define INT_MASK (INT_SPDIFOUT|INT_CODECSPDIFOUT|INT_MICIN|INT_PCMOUT|INT_PCMIN)
+
+#define DRIVER_VERSION "0.02ac"
+
+/* magic numbers to protect our data structures */
+#define ALI5455_CARD_MAGIC 0x5072696E /* "Prin" */
+#define ALI5455_STATE_MAGIC 0x63657373 /* "cess" */
+#define ALI5455_DMA_MASK 0xffffffff /* DMA buffer mask for pci_alloc_consist */
+#define NR_HW_CH 5 //I think 5 channel
+
+/* maxinum number of AC97 codecs connected, AC97 2.0 defined 4 */
+#define NR_AC97 2
+
+/* Please note that an 8bit mono stream is not valid on this card, you must have a 16bit */
+/* stream at a minimum for this card to be happy */
+static const unsigned sample_size[] = { 1, 2, 2, 4 };
+/* Samples are 16bit values, so we are shifting to a word, not to a byte, hence shift */
+/* values are one less than might be expected */
+static const unsigned sample_shift[] = { -1, 0, 0, 1 };
+
+#define ALI5455
+static char *card_names[] = {
+ "ALI 5455"
+};
+
+static struct pci_device_id ali_pci_tbl[] __initdata = {
+ {PCI_VENDOR_ID_ALI, PCI_DEVICE_ID_ALI_5455,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, ALI5455},
+ {0,}
+};
+
+MODULE_DEVICE_TABLE(pci, ali_pci_tbl);
+
+#ifdef CONFIG_PM
+#define PM_SUSPENDED(card) (card->pm_suspended)
+#else
+#define PM_SUSPENDED(card) (0)
+#endif
+
+/* "software" or virtual channel, an instance of opened /dev/dsp */
+struct ali_state {
+ unsigned int magic;
+ struct ali_card *card; /* Card info */
+
+ /* single open lock mechanism, only used for recording */
+ struct semaphore open_sem;
+ wait_queue_head_t open_wait;
+
+ /* file mode */
+ mode_t open_mode;
+
+ /* virtual channel number */
+ int virt;
+
+#ifdef CONFIG_PM
+ unsigned int pm_saved_dac_rate, pm_saved_adc_rate;
+#endif
+ struct dmabuf {
+ /* wave sample stuff */
+ unsigned int rate;
+ unsigned char fmt, enable, trigger;
+
+ /* hardware channel */
+ struct ali_channel *read_channel;
+ struct ali_channel *write_channel;
+ struct ali_channel *codec_spdifout_channel;
+ struct ali_channel *controller_spdifout_channel;
+
+ /* OSS buffer management stuff */
+ void *rawbuf;
+ dma_addr_t dma_handle;
+ unsigned buforder;
+ unsigned numfrag;
+ unsigned fragshift;
+
+ /* our buffer acts like a circular ring */
+ unsigned hwptr; /* where dma last started, updated by update_ptr */
+ unsigned swptr; /* where driver last clear/filled, updated by read/write */
+ int count; /* bytes to be consumed or been generated by dma machine */
+ unsigned total_bytes; /* total bytes dmaed by hardware */
+
+ unsigned error; /* number of over/underruns */
+ wait_queue_head_t wait; /* put process on wait queue when no more space in buffer */
+
+ /* redundant, but makes calculations easier */
+ /* what the hardware uses */
+ unsigned dmasize;
+ unsigned fragsize;
+ unsigned fragsamples;
+
+ /* what we tell the user to expect */
+ unsigned userfrags;
+ unsigned userfragsize;
+
+ /* OSS stuff */
+ unsigned mapped:1;
+ unsigned ready:1;
+ unsigned update_flag;
+ unsigned ossfragsize;
+ unsigned ossmaxfrags;
+ unsigned subdivision;
+ } dmabuf;
+};
+
+
+struct ali_card {
+ struct ali_channel channel[5];
+ unsigned int magic;
+
+ /* We keep ali5455 cards in a linked list */
+ struct ali_card *next;
+
+ /* The ali has a certain amount of cross channel interaction
+ so we use a single per card lock */
+ spinlock_t lock;
+ spinlock_t ac97_lock;
+
+ /* PCI device stuff */
+ struct pci_dev *pci_dev;
+ u16 pci_id;
+#ifdef CONFIG_PM
+ u16 pm_suspended;
+ u32 pm_save_state[64 / sizeof(u32)];
+ int pm_saved_mixer_settings[SOUND_MIXER_NRDEVICES][NR_AC97];
+#endif
+ /* soundcore stuff */
+ int dev_audio;
+
+ /* structures for abstraction of hardware facilities, codecs, banks and channels */
+ struct ac97_codec *ac97_codec[NR_AC97];
+ struct ali_state *states[NR_HW_CH];
+
+ u16 ac97_features;
+ u16 ac97_status;
+ u16 channels;
+
+ /* hardware resources */
+ unsigned long iobase;
+
+ u32 irq;
+
+ /* Function support */
+ struct ali_channel *(*alloc_pcm_channel) (struct ali_card *);
+ struct ali_channel *(*alloc_rec_pcm_channel) (struct ali_card *);
+ struct ali_channel *(*alloc_rec_mic_channel) (struct ali_card *);
+ struct ali_channel *(*alloc_codec_spdifout_channel) (struct ali_card *);
+ struct ali_channel *(*alloc_controller_spdifout_channel) (struct ali_card *);
+ void (*free_pcm_channel) (struct ali_card *, int chan);
+
+ /* We have a *very* long init time possibly, so use this to block */
+ /* attempts to open our devices before we are ready (stops oops'es) */
+ int initializing;
+};
+
+
+static struct ali_card *devs = NULL;
+
+static int ali_open_mixdev(struct inode *inode, struct file *file);
+static int ali_ioctl_mixdev(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg);
+static u16 ali_ac97_get(struct ac97_codec *dev, u8 reg);
+static void ali_ac97_set(struct ac97_codec *dev, u8 reg, u16 data);
+
+static struct ali_channel *ali_alloc_pcm_channel(struct ali_card *card)
+{
+ if (card->channel[1].used == 1)
+ return NULL;
+ card->channel[1].used = 1;
+ return &card->channel[1];
+}
+
+static struct ali_channel *ali_alloc_rec_pcm_channel(struct ali_card *card)
+{
+ if (card->channel[0].used == 1)
+ return NULL;
+ card->channel[0].used = 1;
+ return &card->channel[0];
+}
+
+static struct ali_channel *ali_alloc_rec_mic_channel(struct ali_card *card)
+{
+ if (card->channel[2].used == 1)
+ return NULL;
+ card->channel[2].used = 1;
+ return &card->channel[2];
+}
+
+static struct ali_channel *ali_alloc_codec_spdifout_channel(struct ali_card *card)
+{
+ if (card->channel[3].used == 1)
+ return NULL;
+ card->channel[3].used = 1;
+ return &card->channel[3];
+}
+
+static struct ali_channel *ali_alloc_controller_spdifout_channel(struct ali_card *card)
+{
+ if (card->channel[4].used == 1)
+ return NULL;
+ card->channel[4].used = 1;
+ return &card->channel[4];
+}
+static void ali_free_pcm_channel(struct ali_card *card, int channel)
+{
+ card->channel[channel].used = 0;
+}
+
+
+//add support codec spdif out
+static int ali_valid_spdif_rate(struct ac97_codec *codec, int rate)
+{
+ unsigned long id = 0L;
+
+ id = (ali_ac97_get(codec, AC97_VENDOR_ID1) << 16);
+ id |= ali_ac97_get(codec, AC97_VENDOR_ID2) & 0xffff;
+ switch (id) {
+ case 0x41445361: /* AD1886 */
+ if (rate == 48000) {
+ return 1;
+ }
+ break;
+ case 0x414c4720: /* ALC650 */
+ if (rate == 48000) {
+ return 1;
+ }
+ break;
+ default: /* all other codecs, until we know otherwiae */
+ if (rate == 48000 || rate == 44100 || rate == 32000) {
+ return 1;
+ }
+ break;
+ }
+ return (0);
+}
+
+/* ali_set_spdif_output
+ *
+ * Configure the S/PDIF output transmitter. When we turn on
+ * S/PDIF, we turn off the analog output. This may not be
+ * the right thing to do.
+ *
+ * Assumptions:
+ * The DSP sample rate must already be set to a supported
+ * S/PDIF rate (32kHz, 44.1kHz, or 48kHz) or we abort.
+ */
+static void ali_set_spdif_output(struct ali_state *state, int slots,
+ int rate)
+{
+ int vol;
+ int aud_reg;
+ struct ac97_codec *codec = state->card->ac97_codec[0];
+
+ if (!(state->card->ac97_features & 4)) {
+ state->card->ac97_status &= ~SPDIF_ON;
+ } else {
+ if (slots == -1) { /* Turn off S/PDIF */
+ aud_reg = ali_ac97_get(codec, AC97_EXTENDED_STATUS);
+ ali_ac97_set(codec, AC97_EXTENDED_STATUS, (aud_reg & ~AC97_EA_SPDIF));
+
+ /* If the volume wasn't muted before we turned on S/PDIF, unmute it */
+ if (!(state->card->ac97_status & VOL_MUTED)) {
+ aud_reg = ali_ac97_get(codec, AC97_MASTER_VOL_STEREO);
+ ali_ac97_set(codec, AC97_MASTER_VOL_STEREO,
+ (aud_reg & ~VOL_MUTED));
+ }
+ state->card->ac97_status &= ~(VOL_MUTED | SPDIF_ON);
+ return;
+ }
+
+ vol = ali_ac97_get(codec, AC97_MASTER_VOL_STEREO);
+ state->card->ac97_status = vol & VOL_MUTED;
+
+ /* Set S/PDIF transmitter sample rate */
+ aud_reg = ali_ac97_get(codec, AC97_SPDIF_CONTROL);
+ switch (rate) {
+ case 32000:
+ aud_reg = (aud_reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_32K;
+ break;
+ case 44100:
+ aud_reg = (aud_reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_44K;
+ break;
+ case 48000:
+ aud_reg = (aud_reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_48K;
+ break;
+ default:
+ /* turn off S/PDIF */
+ aud_reg = ali_ac97_get(codec, AC97_EXTENDED_STATUS);
+ ali_ac97_set(codec, AC97_EXTENDED_STATUS, (aud_reg & ~AC97_EA_SPDIF));
+ state->card->ac97_status &= ~SPDIF_ON;
+ return;
+ }
+
+ ali_ac97_set(codec, AC97_SPDIF_CONTROL, aud_reg);
+
+ aud_reg = ali_ac97_get(codec, AC97_EXTENDED_STATUS);
+ aud_reg = (aud_reg & AC97_EA_SLOT_MASK) | slots | AC97_EA_SPDIF;
+ ali_ac97_set(codec, AC97_EXTENDED_STATUS, aud_reg);
+
+ aud_reg = ali_ac97_get(codec, AC97_POWER_CONTROL);
+ aud_reg |= 0x0002;
+ ali_ac97_set(codec, AC97_POWER_CONTROL, aud_reg);
+ udelay(1);
+
+ state->card->ac97_status |= SPDIF_ON;
+
+ /* Check to make sure the configuration is valid */
+ aud_reg = ali_ac97_get(codec, AC97_EXTENDED_STATUS);
+ if (!(aud_reg & 0x0400)) {
+ /* turn off S/PDIF */
+ ali_ac97_set(codec, AC97_EXTENDED_STATUS, (aud_reg & ~AC97_EA_SPDIF));
+ state->card->ac97_status &= ~SPDIF_ON;
+ return;
+ }
+ if (codec_independent_spdif_locked > 0) {
+ aud_reg = ali_ac97_get(codec, 0x6a);
+ ali_ac97_set(codec, 0x6a, (aud_reg & 0xefff));
+ }
+ /* Mute the analog output */
+ /* Should this only mute the PCM volume??? */
+ }
+}
+
+/* ali_set_dac_channels
+ *
+ * Configure the codec's multi-channel DACs
+ *
+ * The logic is backwards. Setting the bit to 1 turns off the DAC.
+ *
+ * What about the ICH? We currently configure it using the
+ * SNDCTL_DSP_CHANNELS ioctl. If we're turnning on the DAC,
+ * does that imply that we want the ICH set to support
+ * these channels?
+ *
+ * TODO:
+ * vailidate that the codec really supports these DACs
+ * before turning them on.
+ */
+static void ali_set_dac_channels(struct ali_state *state, int channel)
+{
+ int aud_reg;
+ struct ac97_codec *codec = state->card->ac97_codec[0];
+
+ aud_reg = ali_ac97_get(codec, AC97_EXTENDED_STATUS);
+ aud_reg |= AC97_EA_PRI | AC97_EA_PRJ | AC97_EA_PRK;
+ state->card->ac97_status &= ~(SURR_ON | CENTER_LFE_ON);
+
+ switch (channel) {
+ case 2: /* always enabled */
+ break;
+ case 4:
+ aud_reg &= ~AC97_EA_PRJ;
+ state->card->ac97_status |= SURR_ON;
+ break;
+ case 6:
+ aud_reg &= ~(AC97_EA_PRJ | AC97_EA_PRI | AC97_EA_PRK);
+ state->card->ac97_status |= SURR_ON | CENTER_LFE_ON;
+ break;
+ default:
+ break;
+ }
+ ali_ac97_set(codec, AC97_EXTENDED_STATUS, aud_reg);
+
+}
+
+/* set playback sample rate */
+static unsigned int ali_set_dac_rate(struct ali_state *state,
+ unsigned int rate)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ u32 new_rate;
+ struct ac97_codec *codec = state->card->ac97_codec[0];
+
+ if (!(state->card->ac97_features & 0x0001)) {
+ dmabuf->rate = clocking;
+ return clocking;
+ }
+
+ if (rate > 48000)
+ rate = 48000;
+ if (rate < 8000)
+ rate = 8000;
+ dmabuf->rate = rate;
+
+ /*
+ * Adjust for misclocked crap
+ */
+
+ rate = (rate * clocking) / 48000;
+
+ if (strict_clocking && rate < 8000) {
+ rate = 8000;
+ dmabuf->rate = (rate * 48000) / clocking;
+ }
+
+ new_rate = ac97_set_dac_rate(codec, rate);
+ if (new_rate != rate) {
+ dmabuf->rate = (new_rate * 48000) / clocking;
+ }
+ rate = new_rate;
+ return dmabuf->rate;
+}
+
+/* set recording sample rate */
+static unsigned int ali_set_adc_rate(struct ali_state *state,
+ unsigned int rate)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ u32 new_rate;
+ struct ac97_codec *codec = state->card->ac97_codec[0];
+
+ if (!(state->card->ac97_features & 0x0001)) {
+ dmabuf->rate = clocking;
+ return clocking;
+ }
+
+ if (rate > 48000)
+ rate = 48000;
+ if (rate < 8000)
+ rate = 8000;
+ dmabuf->rate = rate;
+
+ /*
+ * Adjust for misclocked crap
+ */
+
+ rate = (rate * clocking) / 48000;
+ if (strict_clocking && rate < 8000) {
+ rate = 8000;
+ dmabuf->rate = (rate * 48000) / clocking;
+ }
+
+ new_rate = ac97_set_adc_rate(codec, rate);
+
+ if (new_rate != rate) {
+ dmabuf->rate = (new_rate * 48000) / clocking;
+ rate = new_rate;
+ }
+ return dmabuf->rate;
+}
+
+/* set codec independent spdifout sample rate */
+static unsigned int ali_set_codecspdifout_rate(struct ali_state *state,
+ unsigned int rate)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+
+ if (!(state->card->ac97_features & 0x0001)) {
+ dmabuf->rate = clocking;
+ return clocking;
+ }
+
+ if (rate > 48000)
+ rate = 48000;
+ if (rate < 8000)
+ rate = 8000;
+ dmabuf->rate = rate;
+
+ return dmabuf->rate;
+}
+
+/* set controller independent spdif out function sample rate */
+static void ali_set_spdifout_rate(struct ali_state *state,
+ unsigned int rate)
+{
+ unsigned char ch_st_sel;
+ unsigned short status_rate;
+
+ switch (rate) {
+ case 44100:
+ status_rate = 0;
+ break;
+ case 32000:
+ status_rate = 0x300;
+ break;
+ case 48000:
+ default:
+ status_rate = 0x200;
+ break;
+ }
+
+ ch_st_sel = inb(state->card->iobase + ALI_SPDIFICS) & ALI_SPDIF_OUT_CH_STATUS; //select spdif_out
+
+ ch_st_sel |= 0x80; //select right
+ outb(ch_st_sel, (state->card->iobase + ALI_SPDIFICS));
+ outb(status_rate | 0x20, (state->card->iobase + ALI_SPDIFCSR + 2));
+
+ ch_st_sel &= (~0x80); //select left
+ outb(ch_st_sel, (state->card->iobase + ALI_SPDIFICS));
+ outw(status_rate | 0x10, (state->card->iobase + ALI_SPDIFCSR + 2));
+}
+
+/* get current playback/recording dma buffer pointer (byte offset from LBA),
+ called with spinlock held! */
+
+static inline unsigned ali_get_dma_addr(struct ali_state *state, int rec)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ unsigned int civ, offset, port, port_picb;
+ unsigned int data;
+
+ if (!dmabuf->enable)
+ return 0;
+
+ if (rec == 1)
+ port = state->card->iobase + dmabuf->read_channel->port;
+ else if (rec == 2)
+ port = state->card->iobase + dmabuf->codec_spdifout_channel->port;
+ else if (rec == 3)
+ port = state->card->iobase + dmabuf->controller_spdifout_channel->port;
+ else
+ port = state->card->iobase + dmabuf->write_channel->port;
+
+ port_picb = port + OFF_PICB;
+
+ do {
+ civ = inb(port + OFF_CIV) & 31;
+ offset = inw(port_picb);
+ /* Must have a delay here! */
+ if (offset == 0)
+ udelay(1);
+
+ /* Reread both registers and make sure that that total
+ * offset from the first reading to the second is 0.
+ * There is an issue with SiS hardware where it will count
+ * picb down to 0, then update civ to the next value,
+ * then set the new picb to fragsize bytes. We can catch
+ * it between the civ update and the picb update, making
+ * it look as though we are 1 fragsize ahead of where we
+ * are. The next to we get the address though, it will
+ * be back in thdelay is more than long enough
+ * that we won't have to worry about the chip still being
+ * out of sync with reality ;-)
+ */
+ } while (civ != (inb(port + OFF_CIV) & 31) || offset != inw(port_picb));
+
+ data = ((civ + 1) * dmabuf->fragsize - (2 * offset)) % dmabuf->dmasize;
+ if (inw(port_picb) == 0)
+ data -= 2048;
+
+ return data;
+}
+
+/* Stop recording (lock held) */
+static inline void __stop_adc(struct ali_state *state)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ struct ali_card *card = state->card;
+
+ dmabuf->enable &= ~ADC_RUNNING;
+
+ outl((1 << 18) | (1 << 16), card->iobase + ALI_DMACR);
+ udelay(1);
+
+ outb(0, card->iobase + PI_CR);
+ while (inb(card->iobase + PI_CR) != 0);
+
+ // now clear any latent interrupt bits (like the halt bit)
+ outb(inb(card->iobase + PI_SR) | 0x001e, card->iobase + PI_SR);
+ outl(inl(card->iobase + ALI_INTERRUPTSR) & INT_PCMIN, card->iobase + ALI_INTERRUPTSR);
+}
+
+static void stop_adc(struct ali_state *state)
+{
+ struct ali_card *card = state->card;
+ unsigned long flags;
+ spin_lock_irqsave(&card->lock, flags);
+ __stop_adc(state);
+ spin_unlock_irqrestore(&card->lock, flags);
+}
+
+static inline void __start_adc(struct ali_state *state)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+
+ if (dmabuf->count < dmabuf->dmasize && dmabuf->ready
+ && !dmabuf->enable && (dmabuf->trigger & PCM_ENABLE_INPUT)) {
+ dmabuf->enable |= ADC_RUNNING;
+ outb((1 << 4) | (1 << 2), state->card->iobase + PI_CR);
+ if (state->card->channel[0].used == 1)
+ outl(1, state->card->iobase + ALI_DMACR); // DMA CONTROL REGISTRER
+ udelay(100);
+ if (state->card->channel[2].used == 1)
+ outl((1 << 2), state->card->iobase + ALI_DMACR); //DMA CONTROL REGISTER
+ udelay(100);
+ }
+}
+
+static void start_adc(struct ali_state *state)
+{
+ struct ali_card *card = state->card;
+ unsigned long flags;
+
+ spin_lock_irqsave(&card->lock, flags);
+ __start_adc(state);
+ spin_unlock_irqrestore(&card->lock, flags);
+}
+
+/* stop playback (lock held) */
+static inline void __stop_dac(struct ali_state *state)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ struct ali_card *card = state->card;
+
+ dmabuf->enable &= ~DAC_RUNNING;
+ outl(0x00020000, card->iobase + 0x08);
+ outb(0, card->iobase + PO_CR);
+ while (inb(card->iobase + PO_CR) != 0)
+ cpu_relax();
+
+ outb(inb(card->iobase + PO_SR) | 0x001e, card->iobase + PO_SR);
+
+ outl(inl(card->iobase + ALI_INTERRUPTSR) & INT_PCMOUT, card->iobase + ALI_INTERRUPTSR);
+}
+
+static void stop_dac(struct ali_state *state)
+{
+ struct ali_card *card = state->card;
+ unsigned long flags;
+ spin_lock_irqsave(&card->lock, flags);
+ __stop_dac(state);
+ spin_unlock_irqrestore(&card->lock, flags);
+}
+
+static inline void __start_dac(struct ali_state *state)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ if (dmabuf->count > 0 && dmabuf->ready && !dmabuf->enable &&
+ (dmabuf->trigger & PCM_ENABLE_OUTPUT)) {
+ dmabuf->enable |= DAC_RUNNING;
+ outb((1 << 4) | (1 << 2), state->card->iobase + PO_CR);
+ outl((1 << 1), state->card->iobase + 0x08); //dma control register
+ }
+}
+
+static void start_dac(struct ali_state *state)
+{
+ struct ali_card *card = state->card;
+ unsigned long flags;
+ spin_lock_irqsave(&card->lock, flags);
+ __start_dac(state);
+ spin_unlock_irqrestore(&card->lock, flags);
+}
+
+/* stop codec and controller spdif out (lock held) */
+static inline void __stop_spdifout(struct ali_state *state)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ struct ali_card *card = state->card;
+
+ if (codec_independent_spdif_locked > 0) {
+ dmabuf->enable &= ~CODEC_SPDIFOUT_RUNNING;
+ outl((1 << 19), card->iobase + 0x08);
+ outb(0, card->iobase + CODECSPDIFOUT_CR);
+
+ while (inb(card->iobase + CODECSPDIFOUT_CR) != 0)
+ cpu_relax();
+
+ outb(inb(card->iobase + CODECSPDIFOUT_SR) | 0x001e, card->iobase + CODECSPDIFOUT_SR);
+ outl(inl(card->iobase + ALI_INTERRUPTSR) & INT_CODECSPDIFOUT, card->iobase + ALI_INTERRUPTSR);
+ } else {
+ if (controller_independent_spdif_locked > 0) {
+ dmabuf->enable &= ~CONTROLLER_SPDIFOUT_RUNNING;
+ outl((1 << 23), card->iobase + 0x08);
+ outb(0, card->iobase + CONTROLLERSPDIFOUT_CR);
+ while (inb(card->iobase + CONTROLLERSPDIFOUT_CR) != 0)
+ cpu_relax();
+ outb(inb(card->iobase + CONTROLLERSPDIFOUT_SR) | 0x001e, card->iobase + CONTROLLERSPDIFOUT_SR);
+ outl(inl(card->iobase + ALI_INTERRUPTSR) & INT_SPDIFOUT, card->iobase + ALI_INTERRUPTSR);
+ }
+ }
+}
+
+static void stop_spdifout(struct ali_state *state)
+{
+ struct ali_card *card = state->card;
+ unsigned long flags;
+ spin_lock_irqsave(&card->lock, flags);
+ __stop_spdifout(state);
+ spin_unlock_irqrestore(&card->lock, flags);
+}
+
+static inline void __start_spdifout(struct ali_state *state)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ if (dmabuf->count > 0 && dmabuf->ready && !dmabuf->enable &&
+ (dmabuf->trigger & SPDIF_ENABLE_OUTPUT)) {
+ if (codec_independent_spdif_locked > 0) {
+ dmabuf->enable |= CODEC_SPDIFOUT_RUNNING;
+ outb((1 << 4) | (1 << 2), state->card->iobase + CODECSPDIFOUT_CR);
+ outl((1 << 3), state->card->iobase + 0x08); //dma control register
+ } else {
+ if (controller_independent_spdif_locked > 0) {
+ dmabuf->enable |= CONTROLLER_SPDIFOUT_RUNNING;
+ outb((1 << 4) | (1 << 2), state->card->iobase + CONTROLLERSPDIFOUT_CR);
+ outl((1 << 7), state->card->iobase + 0x08); //dma control register
+ }
+ }
+ }
+}
+
+static void start_spdifout(struct ali_state *state)
+{
+ struct ali_card *card = state->card;
+ unsigned long flags;
+ spin_lock_irqsave(&card->lock, flags);
+ __start_spdifout(state);
+ spin_unlock_irqrestore(&card->lock, flags);
+}
+
+#define DMABUF_DEFAULTORDER (16-PAGE_SHIFT)
+#define DMABUF_MINORDER 1
+
+/* allocate DMA buffer, playback , recording,spdif out buffer should be allocated separately */
+static int alloc_dmabuf(struct ali_state *state)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ void *rawbuf = NULL;
+ int order, size;
+ struct page *page, *pend;
+
+ /* If we don't have any oss frag params, then use our default ones */
+ if (dmabuf->ossmaxfrags == 0)
+ dmabuf->ossmaxfrags = 4;
+ if (dmabuf->ossfragsize == 0)
+ dmabuf->ossfragsize = (PAGE_SIZE << DMABUF_DEFAULTORDER) / dmabuf->ossmaxfrags;
+ size = dmabuf->ossfragsize * dmabuf->ossmaxfrags;
+
+ if (dmabuf->rawbuf && (PAGE_SIZE << dmabuf->buforder) == size)
+ return 0;
+ /* alloc enough to satisfy the oss params */
+ for (order = DMABUF_DEFAULTORDER; order >= DMABUF_MINORDER; order--) {
+ if ((PAGE_SIZE << order) > size)
+ continue;
+ if ((rawbuf = pci_alloc_consistent(state->card->pci_dev,
+ PAGE_SIZE << order,
+ &dmabuf->dma_handle)))
+ break;
+ }
+ if (!rawbuf)
+ return -ENOMEM;
+
+ dmabuf->ready = dmabuf->mapped = 0;
+ dmabuf->rawbuf = rawbuf;
+ dmabuf->buforder = order;
+
+ /* now mark the pages as reserved; otherwise remap_page_range doesn't do what we want */
+ pend = virt_to_page(rawbuf + (PAGE_SIZE << order) - 1);
+ for (page = virt_to_page(rawbuf); page <= pend; page++)
+ SetPageReserved(page);
+ return 0;
+}
+
+/* free DMA buffer */
+static void dealloc_dmabuf(struct ali_state *state)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ struct page *page, *pend;
+
+ if (dmabuf->rawbuf) {
+ /* undo marking the pages as reserved */
+ pend = virt_to_page(dmabuf->rawbuf + (PAGE_SIZE << dmabuf->buforder) - 1);
+ for (page = virt_to_page(dmabuf->rawbuf); page <= pend; page++)
+ ClearPageReserved(page);
+ pci_free_consistent(state->card->pci_dev,
+ PAGE_SIZE << dmabuf->buforder,
+ dmabuf->rawbuf, dmabuf->dma_handle);
+ }
+ dmabuf->rawbuf = NULL;
+ dmabuf->mapped = dmabuf->ready = 0;
+}
+
+static int prog_dmabuf(struct ali_state *state, unsigned rec)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ struct ali_channel *c = NULL;
+ struct sg_item *sg;
+ unsigned long flags;
+ int ret;
+ unsigned fragint;
+ int i;
+
+ spin_lock_irqsave(&state->card->lock, flags);
+ if (dmabuf->enable & DAC_RUNNING)
+ __stop_dac(state);
+ if (dmabuf->enable & ADC_RUNNING)
+ __stop_adc(state);
+ if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING)
+ __stop_spdifout(state);
+ if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING)
+ __stop_spdifout(state);
+
+ dmabuf->total_bytes = 0;
+ dmabuf->count = dmabuf->error = 0;
+ dmabuf->swptr = dmabuf->hwptr = 0;
+ spin_unlock_irqrestore(&state->card->lock, flags);
+
+ /* allocate DMA buffer, let alloc_dmabuf determine if we are already
+ * allocated well enough or if we should replace the current buffer
+ * (assuming one is already allocated, if it isn't, then allocate it).
+ */
+ if ((ret = alloc_dmabuf(state)))
+ return ret;
+
+ /* FIXME: figure out all this OSS fragment stuff */
+ /* I did, it now does what it should according to the OSS API. DL */
+ /* We may not have realloced our dmabuf, but the fragment size to
+ * fragment number ratio may have changed, so go ahead and reprogram
+ * things
+ */
+
+ dmabuf->dmasize = PAGE_SIZE << dmabuf->buforder;
+ dmabuf->numfrag = SG_LEN;
+ dmabuf->fragsize = dmabuf->dmasize / dmabuf->numfrag;
+ dmabuf->fragsamples = dmabuf->fragsize >> 1;
+ dmabuf->userfragsize = dmabuf->ossfragsize;
+ dmabuf->userfrags = dmabuf->dmasize / dmabuf->ossfragsize;
+
+ memset(dmabuf->rawbuf, 0, dmabuf->dmasize);
+
+ if (dmabuf->ossmaxfrags == 4) {
+ fragint = 8;
+ dmabuf->fragshift = 2;
+ } else if (dmabuf->ossmaxfrags == 8) {
+ fragint = 4;
+ dmabuf->fragshift = 3;
+ } else if (dmabuf->ossmaxfrags == 16) {
+ fragint = 2;
+ dmabuf->fragshift = 4;
+ } else {
+ fragint = 1;
+ dmabuf->fragshift = 5;
+ }
+ /*
+ * Now set up the ring
+ */
+
+ if (rec == 1)
+ c = dmabuf->read_channel;
+ else if (rec == 2)
+ c = dmabuf->codec_spdifout_channel;
+ else if (rec == 3)
+ c = dmabuf->controller_spdifout_channel;
+ else if (rec == 0)
+ c = dmabuf->write_channel;
+ if (c != NULL) {
+ sg = &c->sg[0];
+ /*
+ * Load up 32 sg entries and take an interrupt at half
+ * way (we might want more interrupts later..)
+ */
+ for (i = 0; i < dmabuf->numfrag; i++) {
+ sg->busaddr =
+ virt_to_bus(dmabuf->rawbuf +
+ dmabuf->fragsize * i);
+ // the card will always be doing 16bit stereo
+ sg->control = dmabuf->fragsamples;
+ sg->control |= CON_BUFPAD; //I modify
+ // set us up to get IOC interrupts as often as needed to
+ // satisfy numfrag requirements, no more
+ if (((i + 1) % fragint) == 0) {
+ sg->control |= CON_IOC;
+ }
+ sg++;
+ }
+ spin_lock_irqsave(&state->card->lock, flags);
+ outb(2, state->card->iobase + c->port + OFF_CR); /* reset DMA machine */
+ outl(virt_to_bus(&c->sg[0]), state->card->iobase + c->port + OFF_BDBAR);
+ outb(0, state->card->iobase + c->port + OFF_CIV);
+ outb(0, state->card->iobase + c->port + OFF_LVI);
+ spin_unlock_irqrestore(&state->card->lock, flags);
+ }
+ /* set the ready flag for the dma buffer */
+ dmabuf->ready = 1;
+ return 0;
+}
+
+static void __ali_update_lvi(struct ali_state *state, int rec)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ int x, port;
+ port = state->card->iobase;
+ if (rec == 1)
+ port += dmabuf->read_channel->port;
+ else if (rec == 2)
+ port += dmabuf->codec_spdifout_channel->port;
+ else if (rec == 3)
+ port += dmabuf->controller_spdifout_channel->port;
+ else if (rec == 0)
+ port += dmabuf->write_channel->port;
+ /* if we are currently stopped, then our CIV is actually set to our
+ * *last* sg segment and we are ready to wrap to the next. However,
+ * if we set our LVI to the last sg segment, then it won't wrap to
+ * the next sg segment, it won't even get a start. So, instead, when
+ * we are stopped, we set both the LVI value and also we increment
+ * the CIV value to the next sg segment to be played so that when
+ * we call start_{dac,adc}, things will operate properly
+ */
+ if (!dmabuf->enable && dmabuf->ready) {
+ if (rec && dmabuf->count < dmabuf->dmasize && (dmabuf->trigger & PCM_ENABLE_INPUT)) {
+ outb((inb(port + OFF_CIV) + 1) & 31, port + OFF_LVI);
+ __start_adc(state);
+ while (! (inb(port + OFF_CR) & ((1 << 4) | (1 << 2))))
+ cpu_relax();
+ } else if (!rec && dmabuf->count && (dmabuf->trigger & PCM_ENABLE_OUTPUT)) {
+ outb((inb(port + OFF_CIV) + 1) & 31, port + OFF_LVI);
+ __start_dac(state);
+ while (!(inb(port + OFF_CR) & ((1 << 4) | (1 << 2))))
+ cpu_relax();
+ } else if (rec && dmabuf->count && (dmabuf->trigger & SPDIF_ENABLE_OUTPUT)) {
+ if (codec_independent_spdif_locked > 0) {
+ // outb((inb(port+OFF_CIV))&31, port+OFF_LVI);
+ outb((inb(port + OFF_CIV) + 1) & 31, port + OFF_LVI);
+ __start_spdifout(state);
+ while (!(inb(port + OFF_CR) & ((1 << 4) | (1 << 2))))
+ cpu_relax();
+ } else {
+ if (controller_independent_spdif_locked > 0) {
+ outb((inb(port + OFF_CIV) + 1) & 31, port + OFF_LVI);
+ __start_spdifout(state);
+ while (!(inb(port + OFF_CR) & ((1 << 4) | (1 << 2))))
+ cpu_relax();
+ }
+ }
+ }
+ }
+
+ /* swptr - 1 is the tail of our transfer */
+ x = (dmabuf->dmasize + dmabuf->swptr - 1) % dmabuf->dmasize;
+ x /= dmabuf->fragsize;
+ outb(x, port + OFF_LVI);
+}
+
+static void ali_update_lvi(struct ali_state *state, int rec)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ unsigned long flags;
+ if (!dmabuf->ready)
+ return;
+ spin_lock_irqsave(&state->card->lock, flags);
+ __ali_update_lvi(state, rec);
+ spin_unlock_irqrestore(&state->card->lock, flags);
+}
+
+/* update buffer manangement pointers, especially, dmabuf->count and dmabuf->hwptr */
+static void ali_update_ptr(struct ali_state *state)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ unsigned hwptr;
+ int diff;
+
+ /* error handling and process wake up for DAC */
+ if (dmabuf->enable == ADC_RUNNING) {
+ /* update hardware pointer */
+ hwptr = ali_get_dma_addr(state, 1);
+ diff = (dmabuf->dmasize + hwptr - dmabuf->hwptr) % dmabuf->dmasize;
+ dmabuf->hwptr = hwptr;
+ dmabuf->total_bytes += diff;
+ dmabuf->count += diff;
+ if (dmabuf->count > dmabuf->dmasize) {
+ /* buffer underrun or buffer overrun */
+ /* this is normal for the end of a read */
+ /* only give an error if we went past the */
+ /* last valid sg entry */
+ if ((inb(state->card->iobase + PI_CIV) & 31) != (inb(state->card->iobase + PI_LVI) & 31)) {
+ printk(KERN_WARNING "ali_audio: DMA overrun on read\n");
+ dmabuf->error++;
+ }
+ }
+ if (dmabuf->count > dmabuf->userfragsize)
+ wake_up(&dmabuf->wait);
+ }
+ /* error handling and process wake up for DAC */
+ if (dmabuf->enable == DAC_RUNNING) {
+ /* update hardware pointer */
+ hwptr = ali_get_dma_addr(state, 0);
+ diff =
+ (dmabuf->dmasize + hwptr -
+ dmabuf->hwptr) % dmabuf->dmasize;
+#if defined(DEBUG_INTERRUPTS) || defined(DEBUG_MMAP)
+ printk("DAC HWP %d,%d,%d\n", hwptr, dmabuf->hwptr, diff);
+#endif
+ dmabuf->hwptr = hwptr;
+ dmabuf->total_bytes += diff;
+ dmabuf->count -= diff;
+ if (dmabuf->count < 0) {
+ /* buffer underrun or buffer overrun */
+ /* this is normal for the end of a write */
+ /* only give an error if we went past the */
+ /* last valid sg entry */
+ if ((inb(state->card->iobase + PO_CIV) & 31) != (inb(state->card->iobase + PO_LVI) & 31)) {
+ printk(KERN_WARNING "ali_audio: DMA overrun on write\n");
+ printk(KERN_DEBUG "ali_audio: CIV %d, LVI %d, hwptr %x, count %d\n",
+ inb(state->card->iobase + PO_CIV) & 31,
+ inb(state->card->iobase + PO_LVI) & 31,
+ dmabuf->hwptr,
+ dmabuf->count);
+ dmabuf->error++;
+ }
+ }
+ if (dmabuf->count < (dmabuf->dmasize - dmabuf->userfragsize))
+ wake_up(&dmabuf->wait);
+ }
+
+ /* error handling and process wake up for CODEC SPDIF OUT */
+ if (dmabuf->enable == CODEC_SPDIFOUT_RUNNING) {
+ /* update hardware pointer */
+ hwptr = ali_get_dma_addr(state, 2);
+ diff = (dmabuf->dmasize + hwptr - dmabuf->hwptr) % dmabuf->dmasize;
+ dmabuf->hwptr = hwptr;
+ dmabuf->total_bytes += diff;
+ dmabuf->count -= diff;
+ if (dmabuf->count < 0) {
+ /* buffer underrun or buffer overrun */
+ /* this is normal for the end of a write */
+ /* only give an error if we went past the */
+ /* last valid sg entry */
+ if ((inb(state->card->iobase + CODECSPDIFOUT_CIV) & 31) != (inb(state->card->iobase + CODECSPDIFOUT_LVI) & 31)) {
+ printk(KERN_WARNING "ali_audio: DMA overrun on write\n");
+ printk(KERN_DEBUG "ali_audio: CIV %d, LVI %d, hwptr %x, count %d\n",
+ inb(state->card->iobase + CODECSPDIFOUT_CIV) & 31,
+ inb(state->card->iobase + CODECSPDIFOUT_LVI) & 31,
+ dmabuf->hwptr, dmabuf->count);
+ dmabuf->error++;
+ }
+ }
+ if (dmabuf->count < (dmabuf->dmasize - dmabuf->userfragsize))
+ wake_up(&dmabuf->wait);
+ }
+ /* error handling and process wake up for CONTROLLER SPDIF OUT */
+ if (dmabuf->enable == CONTROLLER_SPDIFOUT_RUNNING) {
+ /* update hardware pointer */
+ hwptr = ali_get_dma_addr(state, 3);
+ diff = (dmabuf->dmasize + hwptr - dmabuf->hwptr) % dmabuf->dmasize;
+ dmabuf->hwptr = hwptr;
+ dmabuf->total_bytes += diff;
+ dmabuf->count -= diff;
+ if (dmabuf->count < 0) {
+ /* buffer underrun or buffer overrun */
+ /* this is normal for the end of a write */
+ /* only give an error if we went past the */
+ /* last valid sg entry */
+ if ((inb(state->card->iobase + CONTROLLERSPDIFOUT_CIV) & 31) != (inb(state->card->iobase + CONTROLLERSPDIFOUT_LVI) & 31)) {
+ printk(KERN_WARNING
+ "ali_audio: DMA overrun on write\n");
+ printk("ali_audio: CIV %d, LVI %d, hwptr %x, "
+ "count %d\n",
+ inb(state->card->iobase + CONTROLLERSPDIFOUT_CIV) & 31,
+ inb(state->card->iobase + CONTROLLERSPDIFOUT_LVI) & 31,
+ dmabuf->hwptr, dmabuf->count);
+ dmabuf->error++;
+ }
+ }
+ if (dmabuf->count < (dmabuf->dmasize - dmabuf->userfragsize))
+ wake_up(&dmabuf->wait);
+ }
+}
+
+static inline int ali_get_free_write_space(struct
+ ali_state
+ *state)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ int free;
+ ali_update_ptr(state);
+ // catch underruns during playback
+ if (dmabuf->count < 0) {
+ dmabuf->count = 0;
+ dmabuf->swptr = dmabuf->hwptr;
+ }
+ free = dmabuf->dmasize - dmabuf->count;
+ free -= (dmabuf->hwptr % dmabuf->fragsize);
+ if (free < 0)
+ return (0);
+ return (free);
+}
+
+static inline int ali_get_available_read_data(struct
+ ali_state
+ *state)
+{
+ struct dmabuf *dmabuf = &state->dmabuf;
+ int avail;
+ ali_update_ptr(state);
+ // catch overruns during record
+ if (dmabuf->count > dmabuf->dmasize) {
+ dmabuf->count = dmabuf->dmasize;
+ dmabuf->swptr = dmabuf->hwptr;
+ }
+ avail = dmabuf->count;
+ avail -= (dmabuf->hwptr % dmabuf->fragsize);
+ if (avail < 0)
+ return (0);
+ return (avail);
+}
+
+static int drain_dac(struct ali_state *state, int signals_allowed)
+{
+
+ DECLARE_WAITQUEUE(wait, current);
+ struct dmabuf *dmabuf = &state->dmabuf;
+ unsigned long flags;
+ unsigned long tmo;
+ int count;
+ if (!dmabuf->ready)
+ return 0;
+ if (dmabuf->mapped) {
+ stop_dac(state);
+ return 0;
+ }
+ add_wait_queue(&dmabuf->wait, &wait);
+ for (;;) {
+
+ spin_lock_irqsave(&state->card->lock, flags);
+ ali_update_ptr(state);
+ count = dmabuf->count;
+ spin_unlock_irqrestore(&state->card->lock, flags);
+ if (count <= 0)
+ break;
+ /*
+ * This will make sure that our LVI is correct, that our
+ * pointer is updated, and that the DAC is running. We
+ * have to force the setting of dmabuf->trigger to avoid
+ * any possible deadlocks.
+ */
+ if (!dmabuf->enable) {
+ dmabuf->trigger = PCM_ENABLE_OUTPUT;
+ ali_update_lvi(state, 0);
+ }
+ if (signal_pending(current) && signals_allowed) {
+ break;
+ }
+
+ /* It seems that we have to set the current state to
+ * TASK_INTERRUPTIBLE every time to make the process
+ * really go to sleep. This also has to be *after* the
+ * update_ptr() call because update_ptr is likely to
+ * do a wake_up() which will unset this before we ever
+ * try to sleep, resuling in a tight loop in this code
+ * instead of actually sleeping and waiting for an
+ * interrupt to wake us up!
+ */
+ set_current_state(TASK_INTERRUPTIBLE);
+ /*
+ * set the timeout to significantly longer than it *should*
+ * take for the DAC to drain the DMA buffer
+ */
+ tmo = (count * HZ) / (dmabuf->rate);
+ if (!schedule_timeout(tmo >= 2 ? tmo : 2)) {
+ printk(KERN_ERR "ali_audio: drain_dac, dma timeout?\n");
+ count = 0;
+ break;
+ }
+ }
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&dmabuf->wait, &wait);
+ if (count > 0 && signal_pending(current) && signals_allowed)
+ return -ERESTARTSYS;
+ stop_dac(state);
+ return 0;
+}
+
+
+static int drain_spdifout(struct ali_state *state, int signals_allowed)
+{
+
+ DECLARE_WAITQUEUE(wait, current);
+ struct dmabuf *dmabuf = &state->dmabuf;
+ unsigned long flags;
+ unsigned long tmo;
+ int count;
+ if (!dmabuf->ready)
+ return 0;
+ if (dmabuf->mapped) {
+ stop_spdifout(state);
+ return 0;
+ }
+ add_wait_queue(&dmabuf->wait, &wait);
+ for (;;) {
+
+ spin_lock_irqsave(&state->card->lock, flags);
+ ali_update_ptr(state);
+ count = dmabuf->count;
+ spin_unlock_irqrestore(&state->card->lock, flags);
+ if (count <= 0)
+ break;
+ /*
+ * This will make sure that our LVI is correct, that our
+ * pointer is updated, and that the DAC is running. We
+ * have to force the setting of dmabuf->trigger to avoid
+ * any possible deadlocks.
+ */
+ if (!dmabuf->enable) {
+ if (codec_independent_spdif_locked > 0) {
+ dmabuf->trigger = SPDIF_ENABLE_OUTPUT;
+ ali_update_lvi(state, 2);
+ } else {
+ if (controller_independent_spdif_locked > 0) {
+ dmabuf->trigger = SPDIF_ENABLE_OUTPUT;
+ ali_update_lvi(state, 3);
+ }
+ }
+ }
+ if (signal_pending(current) && signals_allowed) {
+ break;
+ }
+
+ /* It seems that we have to set the current state to
+ * TASK_INTERRUPTIBLE every time to make the process
+ * really go to sleep. This also has to be *after* the
+ * update_ptr() call because update_ptr is likely to
+ * do a wake_up() which will unset this before we ever
+ * try to sleep, resuling in a tight loop in this code
+ * instead of actually sleeping and waiting for an
+ * interrupt to wake us up!
+ */
+ set_current_state(TASK_INTERRUPTIBLE);
+ /*
+ * set the timeout to significantly longer than it *should*
+ * take for the DAC to drain the DMA buffer
+ */
+ tmo = (count * HZ) / (dmabuf->rate);
+ if (!schedule_timeout(tmo >= 2 ? tmo : 2)) {
+ printk(KERN_ERR "ali_audio: drain_spdifout, dma timeout?\n");
+ count = 0;
+ break;
+ }
+ }
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&dmabuf->wait, &wait);
+ if (count > 0 && signal_pending(current) && signals_allowed)
+ return -ERESTARTSYS;
+ stop_spdifout(state);
+ return 0;
+}
+
+static void ali_channel_interrupt(struct ali_card *card)
+{
+ int i, count;
+
+ for (i = 0; i < NR_HW_CH; i++) {
+ struct ali_state *state = card->states[i];
+ struct ali_channel *c = NULL;
+ struct dmabuf *dmabuf;
+ unsigned long port = card->iobase;
+ u16 status;
+ if (!state)
+ continue;
+ if (!state->dmabuf.ready)
+ continue;
+ dmabuf = &state->dmabuf;
+ if (codec_independent_spdif_locked > 0) {
+ if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING) {
+ c = dmabuf->codec_spdifout_channel;
+ }
+ } else {
+ if (controller_independent_spdif_locked > 0) {
+ if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING)
+ c = dmabuf->controller_spdifout_channel;
+ } else {
+ if (dmabuf->enable & DAC_RUNNING) {
+ c = dmabuf->write_channel;
+ } else if (dmabuf->enable & ADC_RUNNING) {
+ c = dmabuf->read_channel;
+ } else
+ continue;
+ }
+ }
+ port += c->port;
+
+ status = inw(port + OFF_SR);
+
+ if (status & DMA_INT_COMPLETE) {
+ /* only wake_up() waiters if this interrupt signals
+ * us being beyond a userfragsize of data open or
+ * available, and ali_update_ptr() does that for
+ * us
+ */
+ ali_update_ptr(state);
+ }
+
+ if (status & DMA_INT_LVI) {
+ ali_update_ptr(state);
+ wake_up(&dmabuf->wait);
+
+ if (dmabuf->enable & DAC_RUNNING)
+ count = dmabuf->count;
+ else if (dmabuf->enable & ADC_RUNNING)
+ count = dmabuf->dmasize - dmabuf->count;
+ else if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING)
+ count = dmabuf->count;
+ else if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING)
+ count = dmabuf->count;
+ else count = 0;
+
+ if (count > 0) {
+ if (dmabuf->enable & DAC_RUNNING)
+ outl((1 << 1), state->card->iobase + ALI_DMACR);
+ else if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING)
+ outl((1 << 3), state->card->iobase + ALI_DMACR);
+ else if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING)
+ outl((1 << 7), state->card->iobase + ALI_DMACR);
+ } else {
+ if (dmabuf->enable & DAC_RUNNING)
+ __stop_dac(state);
+ if (dmabuf->enable & ADC_RUNNING)
+ __stop_adc(state);
+ if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING)
+ __stop_spdifout(state);
+ if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING)
+ __stop_spdifout(state);
+ dmabuf->enable = 0;
+ wake_up(&dmabuf->wait);
+ }
+
+ }
+ if (!(status & DMA_INT_DCH)) {
+ ali_update_ptr(state);
+ wake_up(&dmabuf->wait);
+ if (dmabuf->enable & DAC_RUNNING)
+ count = dmabuf->count;
+ else if (dmabuf->enable & ADC_RUNNING)
+ count = dmabuf->dmasize - dmabuf->count;
+ else if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING)
+ count = dmabuf->count;
+ else if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING)
+ count = dmabuf->count;
+ else
+ count = 0;
+
+ if (count > 0) {
+ if (dmabuf->enable & DAC_RUNNING)
+ outl((1 << 1), state->card->iobase + ALI_DMACR);
+ else if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING)
+ outl((1 << 3), state->card->iobase + ALI_DMACR);
+ else if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING)
+ outl((1 << 7), state->card->iobase + ALI_DMACR);
+ } else {
+ if (dmabuf->enable & DAC_RUNNING)
+ __stop_dac(state);
+ if (dmabuf->enable & ADC_RUNNING)
+ __stop_adc(state);
+ if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING)
+ __stop_spdifout(state);
+ if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING)
+ __stop_spdifout(state);
+ dmabuf->enable = 0;
+ wake_up(&dmabuf->wait);
+ }
+ }
+ outw(status & DMA_INT_MASK, port + OFF_SR);
+ }
+}
+
+static irqreturn_t ali_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct ali_card *card = (struct ali_card *) dev_id;
+ u32 status;
+ u16 status2;
+
+ spin_lock(&card->lock);
+ status = inl(card->iobase + ALI_INTERRUPTSR);
+ if (!(status & INT_MASK)) {
+ spin_unlock(&card->lock);
+ return IRQ_NONE; /* not for us */
+ }
+
+ if (codec_independent_spdif_locked > 0) {
+ if (globel == 0) {
+ globel += 1;
+ status2 = inw(card->iobase + 0x76);
+ outw(status2 | 0x000c, card->iobase + 0x76);
+ } else {
+ if (status & (INT_PCMOUT | INT_PCMIN | INT_MICIN | INT_SPDIFOUT | INT_CODECSPDIFOUT))
+ ali_channel_interrupt(card);
+ }
+ } else {
+ if (status & (INT_PCMOUT | INT_PCMIN | INT_MICIN | INT_SPDIFOUT | INT_CODECSPDIFOUT))
+ ali_channel_interrupt(card);
+ }
+
+ /* clear 'em */
+ outl(status & INT_MASK, card->iobase + ALI_INTERRUPTSR);
+ spin_unlock(&card->lock);
+ return IRQ_HANDLED;
+}
+
+/* in this loop, dmabuf.count signifies the amount of data that is
+ waiting to be copied to the user's buffer. It is filled by the dma
+ machine and drained by this loop. */
+
+static ssize_t ali_read(struct file *file, char *buffer,
+ size_t count, loff_t * ppos)
+{
+ struct ali_state *state = (struct ali_state *) file->private_data;
+ struct ali_card *card = state ? state->card : 0;
+ struct dmabuf *dmabuf = &state->dmabuf;
+ ssize_t ret;
+ unsigned long flags;
+ unsigned int swptr;
+ int cnt;
+ DECLARE_WAITQUEUE(waita, current);
+#ifdef DEBUG2
+ printk("ali_audio: ali_read called, count = %d\n", count);
+#endif
+ if (ppos != &file->f_pos)
+ return -ESPIPE;
+ if (dmabuf->mapped)
+ return -ENXIO;
+ if (dmabuf->enable & DAC_RUNNING)
+ return -ENODEV;
+ if (!dmabuf->read_channel) {
+ dmabuf->ready = 0;
+ dmabuf->read_channel = card->alloc_rec_pcm_channel(card);
+ if (!dmabuf->read_channel) {
+ return -EBUSY;
+ }
+ }
+ if (!dmabuf->ready && (ret = prog_dmabuf(state, 1)))
+ return ret;
+ if (!access_ok(VERIFY_WRITE, buffer, count))
+ return -EFAULT;
+ ret = 0;
+ add_wait_queue(&dmabuf->wait, &waita);
+ while (count > 0) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ spin_lock_irqsave(&card->lock, flags);
+ if (PM_SUSPENDED(card)) {
+ spin_unlock_irqrestore(&card->lock, flags);
+ schedule();
+ if (signal_pending(current)) {
+ if (!ret)
+ ret = -EAGAIN;
+ break;
+ }
+ continue;
+ }
+ swptr = dmabuf->swptr;
+ cnt = ali_get_available_read_data(state);
+ // this is to make the copy_to_user simpler below
+ if (cnt > (dmabuf->dmasize - swptr))
+ cnt = dmabuf->dmasize - swptr;
+ spin_unlock_irqrestore(&card->lock, flags);
+ if (cnt > count)
+ cnt = count;
+ /* Lop off the last two bits to force the code to always
+ * write in full samples. This keeps software that sets
+ * O_NONBLOCK but doesn't check the return value of the
+ * write call from getting things out of state where they
+ * think a full 4 byte sample was written when really only
+ * a portion was, resulting in odd sound and stereo
+ * hysteresis.
+ */
+ cnt &= ~0x3;
+ if (cnt <= 0) {
+ unsigned long tmo;
+ /*
+ * Don't let us deadlock. The ADC won't start if
+ * dmabuf->trigger isn't set. A call to SETTRIGGER
+ * could have turned it off after we set it to on
+ * previously.
+ */
+ dmabuf->trigger = PCM_ENABLE_INPUT;
+ /*
+ * This does three things. Updates LVI to be correct,
+ * makes sure the ADC is running, and updates the
+ * hwptr.
+ */
+ ali_update_lvi(state, 1);
+ if (file->f_flags & O_NONBLOCK) {
+ if (!ret)
+ ret = -EAGAIN;
+ goto done;
+ }
+ /* Set the timeout to how long it would take to fill
+ * two of our buffers. If we haven't been woke up
+ * by then, then we know something is wrong.
+ */
+ tmo = (dmabuf->dmasize * HZ * 2) / (dmabuf->rate * 4);
+
+ /* There are two situations when sleep_on_timeout returns, one is when
+ the interrupt is serviced correctly and the process is waked up by
+ ISR ON TIME. Another is when timeout is expired, which means that
+ either interrupt is NOT serviced correctly (pending interrupt) or it
+ is TOO LATE for the process to be scheduled to run (scheduler latency)
+ which results in a (potential) buffer overrun. And worse, there is
+ NOTHING we can do to prevent it. */
+ if (!schedule_timeout(tmo >= 2 ? tmo : 2)) {
+ printk(KERN_ERR
+ "ali_audio: recording schedule timeout, "
+ "dmasz %u fragsz %u count %i hwptr %u swptr %u\n",
+ dmabuf->dmasize, dmabuf->fragsize,
+ dmabuf->count, dmabuf->hwptr,
+ dmabuf->swptr);
+ /* a buffer overrun, we delay the recovery until next time the
+ while loop begin and we REALLY have space to record */
+ }
+ if (signal_pending(current)) {
+ ret = ret ? ret : -ERESTARTSYS;
+ goto done;
+ }
+ continue;
+ }
+
+ if (copy_to_user(buffer, dmabuf->rawbuf + swptr, cnt)) {
+ if (!ret)
+ ret = -EFAULT;
+ goto done;
+ }
+
+ swptr = (swptr + cnt) % dmabuf->dmasize;
+ spin_lock_irqsave(&card->lock, flags);
+ if (PM_SUSPENDED(card)) {
+ spin_unlock_irqrestore(&card->lock, flags);
+ continue;
+ }
+ dmabuf->swptr = swptr;
+ dmabuf->count -= cnt;
+ spin_unlock_irqrestore(&card->lock, flags);
+ count -= cnt;
+ buffer += cnt;
+ ret += cnt;
+ }
+done:
+ ali_update_lvi(state, 1);
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&dmabuf->wait, &waita);
+ return ret;
+}
+
+/* in this loop, dmabuf.count signifies the amount of data that is waiting to be dma to
+ the soundcard. it is drained by the dma machine and filled by this loop. */
+static ssize_t ali_write(struct file *file,
+ const char *buffer, size_t count, loff_t * ppos)
+{
+ struct ali_state *state = (struct ali_state *) file->private_data;
+ struct ali_card *card = state ? state->card : 0;
+ struct dmabuf *dmabuf = &state->dmabuf;
+ ssize_t ret;
+ unsigned long flags;
+ unsigned int swptr = 0;
+ int cnt, x;
+ DECLARE_WAITQUEUE(waita, current);
+#ifdef DEBUG2
+ printk("ali_audio: ali_write called, count = %d\n", count);
+#endif
+ if (ppos != &file->f_pos)
+ return -ESPIPE;
+ if (dmabuf->mapped)
+ return -ENXIO;
+ if (dmabuf->enable & ADC_RUNNING)
+ return -ENODEV;
+ if (codec_independent_spdif_locked > 0) {
+ if (!dmabuf->codec_spdifout_channel) {
+ dmabuf->ready = 0;
+ dmabuf->codec_spdifout_channel = card->alloc_codec_spdifout_channel(card);
+ if (!dmabuf->codec_spdifout_channel)
+ return -EBUSY;
+ }
+ } else {
+ if (controller_independent_spdif_locked > 0) {
+ if (!dmabuf->controller_spdifout_channel) {
+ dmabuf->ready = 0;
+ dmabuf->controller_spdifout_channel = card->alloc_controller_spdifout_channel(card);
+ if (!dmabuf->controller_spdifout_channel)
+ return -EBUSY;
+ }
+ } else {
+ if (!dmabuf->write_channel) {
+ dmabuf->ready = 0;
+ dmabuf->write_channel =
+ card->alloc_pcm_channel(card);
+ if (!dmabuf->write_channel)
+ return -EBUSY;
+ }
+ }
+ }
+
+ if (codec_independent_spdif_locked > 0) {
+ if (!dmabuf->ready && (ret = prog_dmabuf(state, 2)))
+ return ret;
+ } else {
+ if (controller_independent_spdif_locked > 0) {
+ if (!dmabuf->ready && (ret = prog_dmabuf(state, 3)))
+ return ret;
+ } else {
+
+ if (!dmabuf->ready && (ret = prog_dmabuf(state, 0)))
+ return ret;
+ }
+ }
+ if (!access_ok(VERIFY_READ, buffer, count))
+ return -EFAULT;
+ ret = 0;
+ add_wait_queue(&dmabuf->wait, &waita);
+ while (count > 0) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ spin_lock_irqsave(&state->card->lock, flags);
+ if (PM_SUSPENDED(card)) {
+ spin_unlock_irqrestore(&card->lock, flags);
+ schedule();
+ if (signal_pending(current)) {
+ if (!ret)
+ ret = -EAGAIN;
+ break;
+ }
+ continue;
+ }
+
+ swptr = dmabuf->swptr;
+ cnt = ali_get_free_write_space(state);
+ /* Bound the maximum size to how much we can copy to the
+ * dma buffer before we hit the end. If we have more to
+ * copy then it will get done in a second pass of this
+ * loop starting from the beginning of the buffer.
+ */
+ if (cnt > (dmabuf->dmasize - swptr))
+ cnt = dmabuf->dmasize - swptr;
+ spin_unlock_irqrestore(&state->card->lock, flags);
+#ifdef DEBUG2
+ printk(KERN_INFO
+ "ali_audio: ali_write: %d bytes available space\n",
+ cnt);
+#endif
+ if (cnt > count)
+ cnt = count;
+ /* Lop off the last two bits to force the code to always
+ * write in full samples. This keeps software that sets
+ * O_NONBLOCK but doesn't check the return value of the
+ * write call from getting things out of state where they
+ * think a full 4 byte sample was written when really only
+ * a portion was, resulting in odd sound and stereo
+ * hysteresis.
+ */
+ cnt &= ~0x3;
+ if (cnt <= 0) {
+ unsigned long tmo;
+ // There is data waiting to be played
+ /*
+ * Force the trigger setting since we would
+ * deadlock with it set any other way
+ */
+ if (codec_independent_spdif_locked > 0) {
+ dmabuf->trigger = SPDIF_ENABLE_OUTPUT;
+ ali_update_lvi(state, 2);
+ } else {
+ if (controller_independent_spdif_locked > 0) {
+ dmabuf->trigger = SPDIF_ENABLE_OUTPUT;
+ ali_update_lvi(state, 3);
+ } else {
+
+ dmabuf->trigger = PCM_ENABLE_OUTPUT;
+ ali_update_lvi(state, 0);
+ }
+ }
+ if (file->f_flags & O_NONBLOCK) {
+ if (!ret)
+ ret = -EAGAIN;
+ goto ret;
+ }
+ /* Not strictly correct but works */
+ tmo = (dmabuf->dmasize * HZ * 2) / (dmabuf->rate * 4);
+ /* There are two situations when sleep_on_timeout returns, one is when
+ the interrupt is serviced correctly and the process is waked up by
+ ISR ON TIME. Another is when timeout is expired, which means that
+ either interrupt is NOT serviced correctly (pending interrupt) or it
+ is TOO LATE for the process to be scheduled to run (scheduler latency)
+ which results in a (potential) buffer underrun. And worse, there is
+ NOTHING we can do to prevent it. */
+
+ /* FIXME - do timeout handling here !! */
+
+ if (signal_pending(current)) {
+ if (!ret)
+ ret = -ERESTARTSYS;
+ goto ret;
+ }
+ continue;
+ }
+ if (copy_from_user(dmabuf->rawbuf + swptr, buffer, cnt)) {
+ if (!ret)
+ ret = -EFAULT;
+ goto ret;
+ }
+
+ swptr = (swptr + cnt) % dmabuf->dmasize;
+ spin_lock_irqsave(&state->card->lock, flags);
+ if (PM_SUSPENDED(card)) {
+ spin_unlock_irqrestore(&card->lock, flags);
+ continue;
+ }
+
+ dmabuf->swptr = swptr;
+ dmabuf->count += cnt;
+ count -= cnt;
+ buffer += cnt;
+ ret += cnt;
+ spin_unlock_irqrestore(&state->card->lock, flags);
+ }
+ if (swptr % dmabuf->fragsize) {
+ x = dmabuf->fragsize - (swptr % dmabuf->fragsize);
+ memset(dmabuf->rawbuf + swptr, '\0', x);
+ }
+ret:
+ if (codec_independent_spdif_locked > 0) {
+ ali_update_lvi(state, 2);
+ } else {
+ if (controller_independent_spdif_locked > 0) {
+ ali_update_lvi(state, 3);
+ } else {
+ ali_update_lvi(state, 0);
+ }
+ }
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&dmabuf->wait, &waita);
+ return ret;
+}
+
+/* No kernel lock - we have our own spinlock */
+static unsigned int ali_poll(struct file *file, struct poll_table_struct
+ *wait)
+{
+ struct ali_state *state = (struct ali_state *) file->private_data;
+ struct dmabuf *dmabuf = &state->dmabuf;
+ unsigned long flags;
+ unsigned int mask = 0;
+ if (!dmabuf->ready)
+ return 0;
+ poll_wait(file, &dmabuf->wait, wait);
+ spin_lock_irqsave(&state->card->lock, flags);
+ ali_update_ptr(state);
+ if (file->f_mode & FMODE_READ && dmabuf->enable & ADC_RUNNING) {
+ if (dmabuf->count >= (signed) dmabuf->fragsize)
+ mask |= POLLIN | POLLRDNORM;
+ }
+ if (file->f_mode & FMODE_WRITE && (dmabuf->enable & (DAC_RUNNING|CODEC_SPDIFOUT_RUNNING|CONTROLLER_SPDIFOUT_RUNNING))) {
+ if ((signed) dmabuf->dmasize >= dmabuf->count + (signed) dmabuf->fragsize)
+ mask |= POLLOUT | POLLWRNORM;
+ }
+ spin_unlock_irqrestore(&state->card->lock, flags);
+ return mask;
+}
+
+static int ali_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ struct ali_state *state = (struct ali_state *) file->private_data;
+ struct dmabuf *dmabuf = &state->dmabuf;
+ int ret = -EINVAL;
+ unsigned long size;
+ lock_kernel();
+ if (vma->vm_flags & VM_WRITE) {
+ if (!dmabuf->write_channel && (dmabuf->write_channel = state->card->alloc_pcm_channel(state->card)) == NULL) {
+ ret = -EBUSY;
+ goto out;
+ }
+ }
+ if (vma->vm_flags & VM_READ) {
+ if (!dmabuf->read_channel && (dmabuf->read_channel = state->card->alloc_rec_pcm_channel(state->card)) == NULL) {
+ ret = -EBUSY;
+ goto out;
+ }
+ }
+ if ((ret = prog_dmabuf(state, 0)) != 0)
+ goto out;
+ ret = -EINVAL;
+ if (vma->vm_pgoff != 0)
+ goto out;
+ size = vma->vm_end - vma->vm_start;
+ if (size > (PAGE_SIZE << dmabuf->buforder))
+ goto out;
+ ret = -EAGAIN;
+ if (remap_page_range(vma, vma->vm_start, virt_to_phys(dmabuf->rawbuf), size, vma->vm_page_prot))
+ goto out;
+ dmabuf->mapped = 1;
+ dmabuf->trigger = 0;
+ ret = 0;
+out:
+ unlock_kernel();
+ return ret;
+}
+
+static int ali_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct ali_state *state = (struct ali_state *) file->private_data;
+ struct ali_channel *c = NULL;
+ struct dmabuf *dmabuf = &state->dmabuf;
+ unsigned long flags;
+ audio_buf_info abinfo;
+ count_info cinfo;
+ unsigned int i_scr;
+ int val = 0, ret;
+ struct ac97_codec *codec = state->card->ac97_codec[0];
+#ifdef DEBUG
+ printk("ali_audio: ali_ioctl, arg=0x%x, cmd=",
+ arg ? *(int *) arg : 0);
+#endif
+ switch (cmd) {
+ case OSS_GETVERSION:
+#ifdef DEBUG
+ printk("OSS_GETVERSION\n");
+#endif
+ return put_user(SOUND_VERSION, (int *) arg);
+ case SNDCTL_DSP_RESET:
+#ifdef DEBUG
+ printk("SNDCTL_DSP_RESET\n");
+#endif
+ spin_lock_irqsave(&state->card->lock, flags);
+ if (dmabuf->enable == DAC_RUNNING) {
+ c = dmabuf->write_channel;
+ __stop_dac(state);
+ }
+ if (dmabuf->enable == ADC_RUNNING) {
+ c = dmabuf->read_channel;
+ __stop_adc(state);
+ }
+ if (dmabuf->enable == CODEC_SPDIFOUT_RUNNING) {
+ c = dmabuf->codec_spdifout_channel;
+ __stop_spdifout(state);
+ }
+ if (dmabuf->enable == CONTROLLER_SPDIFOUT_RUNNING) {
+ c = dmabuf->controller_spdifout_channel;
+ __stop_spdifout(state);
+ }
+ if (c != NULL) {
+ outb(2, state->card->iobase + c->port + OFF_CR); /* reset DMA machine */
+ outl(virt_to_bus(&c->sg[0]),
+ state->card->iobase + c->port + OFF_BDBAR);
+ outb(0, state->card->iobase + c->port + OFF_CIV);
+ outb(0, state->card->iobase + c->port + OFF_LVI);
+ }
+
+ spin_unlock_irqrestore(&state->card->lock, flags);
+ synchronize_irq(state->card->pci_dev->irq);
+ dmabuf->ready = 0;
+ dmabuf->swptr = dmabuf->hwptr = 0;
+ dmabuf->count = dmabuf->total_bytes = 0;
+ return 0;
+ case SNDCTL_DSP_SYNC:
+#ifdef DEBUG
+ printk("SNDCTL_DSP_SYNC\n");
+#endif
+ if (codec_independent_spdif_locked > 0) {
+ if (dmabuf->enable != CODEC_SPDIFOUT_RUNNING
+ || file->f_flags & O_NONBLOCK)
+ return 0;
+ if ((val = drain_spdifout(state, 1)))
+ return val;
+ } else {
+ if (controller_independent_spdif_locked > 0) {
+ if (dmabuf->enable !=
+ CONTROLLER_SPDIFOUT_RUNNING
+ || file->f_flags & O_NONBLOCK)
+ return 0;
+ if ((val = drain_spdifout(state, 1)))
+ return val;
+ } else {
+ if (dmabuf->enable != DAC_RUNNING
+ || file->f_flags & O_NONBLOCK)
+ return 0;
+ if ((val = drain_dac(state, 1)))
+ return val;
+ }
+ }
+ dmabuf->total_bytes = 0;
+ return 0;
+ case SNDCTL_DSP_SPEED: /* set smaple rate */
+#ifdef DEBUG
+ printk("SNDCTL_DSP_SPEED\n");
+#endif
+ if (get_user(val, (int *) arg))
+ return -EFAULT;
+ if (val >= 0) {
+ if (file->f_mode & FMODE_WRITE) {
+ if ((state->card->ac97_status & SPDIF_ON)) { /* S/PDIF Enabled */
+ /* RELTEK ALC650 only support 48000, need to check that */
+ if (ali_valid_spdif_rate(codec, val)) {
+ if (codec_independent_spdif_locked > 0) {
+ ali_set_spdif_output(state, -1, 0);
+ stop_spdifout(state);
+ dmabuf->ready = 0;
+ /* I add test codec independent spdif out */
+ spin_lock_irqsave(&state->card->lock, flags);
+ ali_set_codecspdifout_rate(state, val); // I modified
+ spin_unlock_irqrestore(&state->card->lock, flags);
+ /* Set S/PDIF transmitter rate. */
+ i_scr = inl(state->card->iobase + ALI_SCR);
+ if ((i_scr & 0x00300000) == 0x00100000) {
+ ali_set_spdif_output(state, AC97_EA_SPSA_7_8, codec_independent_spdif_locked);
+ } else {
+ if ((i_scr&0x00300000) == 0x00200000)
+ {
+ ali_set_spdif_output(state, AC97_EA_SPSA_6_9, codec_independent_spdif_locked);
+ } else {
+ if ((i_scr & 0x00300000) == 0x00300000) {
+ ali_set_spdif_output(state, AC97_EA_SPSA_10_11, codec_independent_spdif_locked);
+ } else {
+ ali_set_spdif_output(state, AC97_EA_SPSA_7_8, codec_independent_spdif_locked);
+ }
+ }
+ }
+
+ if (!(state->card->ac97_status & SPDIF_ON)) {
+ val = dmabuf->rate;
+ }
+ } else {
+ if (controller_independent_spdif_locked > 0)
+ {
+ stop_spdifout(state);
+ dmabuf->ready = 0;
+ spin_lock_irqsave(&state->card->lock, flags);
+ ali_set_spdifout_rate(state, controller_independent_spdif_locked);
+ spin_unlock_irqrestore(&state->card->lock, flags);
+ } else {
+ /* Set DAC rate */
+ ali_set_spdif_output(state, -1, 0);
+ stop_dac(state);
+ dmabuf->ready = 0;
+ spin_lock_irqsave(&state->card->lock, flags);
+ ali_set_dac_rate(state, val);
+ spin_unlock_irqrestore(&state->card->lock, flags);
+ /* Set S/PDIF transmitter rate. */
+ ali_set_spdif_output(state, AC97_EA_SPSA_3_4, val);
+ if (!(state->card->ac97_status & SPDIF_ON))
+ {
+ val = dmabuf->rate;
+ }
+ }
+ }
+ } else { /* Not a valid rate for S/PDIF, ignore it */
+ val = dmabuf->rate;
+ }
+ } else {
+ stop_dac(state);
+ dmabuf->ready = 0;
+ spin_lock_irqsave(&state->card->lock, flags);
+ ali_set_dac_rate(state, val);
+ spin_unlock_irqrestore(&state->card->lock, flags);
+ }
+ }
+ if (file->f_mode & FMODE_READ) {
+ stop_adc(state);
+ dmabuf->ready = 0;
+ spin_lock_irqsave(&state->card->lock, flags);
+ ali_set_adc_rate(state, val);
+ spin_unlock_irqrestore(&state->card->lock, flags);
+ }
+ }
+ return put_user(dmabuf->rate, (int *) arg);
+ case SNDCTL_DSP_STEREO: /* set stereo or mono channel */
+#ifdef DEBUG
+ printk("SNDCTL_DSP_STEREO\n");
+#endif
+ if (dmabuf->enable & DAC_RUNNING) {
+ stop_dac(state);
+ }
+ if (dmabuf->enable & ADC_RUNNING) {
+ stop_adc(state);
+ }
+ if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING) {
+ stop_spdifout(state);
+ }
+ if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING) {
+ stop_spdifout(state);
+ }
+ return put_user(1, (int *) arg);
+ case SNDCTL_DSP_GETBLKSIZE:
+ if (file->f_mode & FMODE_WRITE) {
+ if (codec_independent_spdif_locked > 0) {
+ if (!dmabuf->ready && (val = prog_dmabuf(state, 2)))
+ return val;
+ } else {
+ if (controller_independent_spdif_locked > 0) {
+ if (!dmabuf->ready && (val = prog_dmabuf(state, 3)))
+ return val;
+ } else {
+ if (!dmabuf->ready && (val = prog_dmabuf(state, 0)))
+ return val;
+ }
+ }
+ }
+
+ if (file->f_mode & FMODE_READ) {
+ if (!dmabuf->ready && (val = prog_dmabuf(state, 1)))
+ return val;
+ }
+#ifdef DEBUG
+ printk("SNDCTL_DSP_GETBLKSIZE %d\n", dmabuf->userfragsize);
+#endif
+ return put_user(dmabuf->userfragsize, (int *) arg);
+ case SNDCTL_DSP_GETFMTS: /* Returns a mask of supported sample format */
+#ifdef DEBUG
+ printk("SNDCTL_DSP_GETFMTS\n");
+#endif
+ return put_user(AFMT_S16_LE, (int *) arg);
+ case SNDCTL_DSP_SETFMT: /* Select sample format */
+#ifdef DEBUG
+ printk("SNDCTL_DSP_SETFMT\n");
+#endif
+ return put_user(AFMT_S16_LE, (int *) arg);
+ case SNDCTL_DSP_CHANNELS: // add support 4,6 channel
+#ifdef DEBUG
+ printk("SNDCTL_DSP_CHANNELS\n");
+#endif
+ if (get_user(val, (int *) arg))
+ return -EFAULT;
+ if (val > 0) {
+ if (dmabuf->enable & DAC_RUNNING) {
+ stop_dac(state);
+ }
+ if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING) {
+ stop_spdifout(state);
+ }
+ if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING) {
+ stop_spdifout(state);
+ }
+ if (dmabuf->enable & ADC_RUNNING) {
+ stop_adc(state);
+ }
+ } else {
+ return put_user(state->card->channels, (int *) arg);
+ }
+
+ i_scr = inl(state->card->iobase + ALI_SCR);
+ /* Current # of channels enabled */
+ if (i_scr & 0x00000100)
+ ret = 4;
+ else if (i_scr & 0x00000200)
+ ret = 6;
+ else
+ ret = 2;
+ switch (val) {
+ case 2: /* 2 channels is always supported */
+ if (codec_independent_spdif_locked > 0) {
+ outl(((i_scr & 0xfffffcff) | 0x00100000), (state->card->iobase + ALI_SCR));
+ } else
+ outl((i_scr & 0xfffffcff), (state->card->iobase + ALI_SCR));
+ /* Do we need to change mixer settings???? */
+ break;
+ case 4: /* Supported on some chipsets, better check first */
+ if (codec_independent_spdif_locked > 0) {
+ outl(((i_scr & 0xfffffcff) | 0x00000100 | 0x00200000), (state->card->iobase + ALI_SCR));
+ } else
+ outl(((i_scr & 0xfffffcff) | 0x00000100), (state->card->iobase + ALI_SCR));
+ break;
+ case 6: /* Supported on some chipsets, better check first */
+ if (codec_independent_spdif_locked > 0) {
+ outl(((i_scr & 0xfffffcff) | 0x00000200 | 0x00008000 | 0x00300000), (state->card->iobase + ALI_SCR));
+ } else
+ outl(((i_scr & 0xfffffcff) | 0x00000200 | 0x00008000), (state->card->iobase + ALI_SCR));
+ break;
+ default: /* nothing else is ever supported by the chipset */
+ val = ret;
+ break;
+ }
+ return put_user(val, (int *) arg);
+ case SNDCTL_DSP_POST: /* the user has sent all data and is notifying us */
+ /* we update the swptr to the end of the last sg segment then return */
+#ifdef DEBUG
+ printk("SNDCTL_DSP_POST\n");
+#endif
+ if (codec_independent_spdif_locked > 0) {
+ if (!dmabuf->ready || (dmabuf->enable != CODEC_SPDIFOUT_RUNNING))
+ return 0;
+ } else {
+ if (controller_independent_spdif_locked > 0) {
+ if (!dmabuf->ready || (dmabuf->enable != CONTROLLER_SPDIFOUT_RUNNING))
+ return 0;
+ } else {
+ if (!dmabuf->ready || (dmabuf->enable != DAC_RUNNING))
+ return 0;
+ }
+ }
+ if ((dmabuf->swptr % dmabuf->fragsize) != 0) {
+ val = dmabuf->fragsize - (dmabuf->swptr % dmabuf->fragsize);
+ dmabuf->swptr += val;
+ dmabuf->count += val;
+ }
+ return 0;
+ case SNDCTL_DSP_SUBDIVIDE:
+ if (dmabuf->subdivision)
+ return -EINVAL;
+ if (get_user(val, (int *) arg))
+ return -EFAULT;
+ if (val != 1 && val != 2 && val != 4)
+ return -EINVAL;
+#ifdef DEBUG
+ printk("SNDCTL_DSP_SUBDIVIDE %d\n", val);
+#endif
+ dmabuf->subdivision = val;
+ dmabuf->ready = 0;
+ return 0;
+ case SNDCTL_DSP_SETFRAGMENT:
+ if (get_user(val, (int *) arg))
+ return -EFAULT;
+ dmabuf->ossfragsize = 1 << (val & 0xffff);
+ dmabuf->ossmaxfrags = (val >> 16) & 0xffff;
+ if (!dmabuf->ossfragsize || !dmabuf->ossmaxfrags)
+ return -EINVAL;
+ /*
+ * Bound the frag size into our allowed range of 256 - 4096
+ */
+ if (dmabuf->ossfragsize < 256)
+ dmabuf->ossfragsize = 256;
+ else if (dmabuf->ossfragsize > 4096)
+ dmabuf->ossfragsize = 4096;
+ /*
+ * The numfrags could be something reasonable, or it could
+ * be 0xffff meaning "Give me as much as possible". So,
+ * we check the numfrags * fragsize doesn't exceed our
+ * 64k buffer limit, nor is it less than our 8k minimum.
+ * If it fails either one of these checks, then adjust the
+ * number of fragments, not the size of them. It's OK if
+ * our number of fragments doesn't equal 32 or anything
+ * like our hardware based number now since we are using
+ * a different frag count for the hardware. Before we get
+ * into this though, bound the maxfrags to avoid overflow
+ * issues. A reasonable bound would be 64k / 256 since our
+ * maximum buffer size is 64k and our minimum frag size is
+ * 256. On the other end, our minimum buffer size is 8k and
+ * our maximum frag size is 4k, so the lower bound should
+ * be 2.
+ */
+ if (dmabuf->ossmaxfrags > 256)
+ dmabuf->ossmaxfrags = 256;
+ else if (dmabuf->ossmaxfrags < 2)
+ dmabuf->ossmaxfrags = 2;
+ val = dmabuf->ossfragsize * dmabuf->ossmaxfrags;
+ while (val < 8192) {
+ val <<= 1;
+ dmabuf->ossmaxfrags <<= 1;
+ }
+ while (val > 65536) {
+ val >>= 1;
+ dmabuf->ossmaxfrags >>= 1;
+ }
+ dmabuf->ready = 0;
+#ifdef DEBUG
+ printk("SNDCTL_DSP_SETFRAGMENT 0x%x, %d, %d\n", val,
+ dmabuf->ossfragsize, dmabuf->ossmaxfrags);
+#endif
+ return 0;
+ case SNDCTL_DSP_GETOSPACE:
+ if (!(file->f_mode & FMODE_WRITE))
+ return -EINVAL;
+ if (codec_independent_spdif_locked > 0) {
+ if (!dmabuf->ready && (val = prog_dmabuf(state, 2)) != 0)
+ return val;
+ } else {
+ if (controller_independent_spdif_locked > 0) {
+ if (!dmabuf->ready && (val = prog_dmabuf(state, 3)) != 0)
+ return val;
+ } else {
+ if (!dmabuf->ready && (val = prog_dmabuf(state, 0)) != 0)
+ return val;
+ }
+ }
+ spin_lock_irqsave(&state->card->lock, flags);
+ ali_update_ptr(state);
+ abinfo.fragsize = dmabuf->userfragsize;
+ abinfo.fragstotal = dmabuf->userfrags;
+ if (dmabuf->mapped)
+ abinfo.bytes = dmabuf->dmasize;
+ else
+ abinfo.bytes = ali_get_free_write_space(state);
+ abinfo.fragments = abinfo.bytes / dmabuf->userfragsize;
+ spin_unlock_irqrestore(&state->card->lock, flags);
+#if defined(DEBUG) || defined(DEBUG_MMAP)
+ printk("SNDCTL_DSP_GETOSPACE %d, %d, %d, %d\n",
+ abinfo.bytes, abinfo.fragsize, abinfo.fragments,
+ abinfo.fragstotal);
+#endif
+ return copy_to_user((void *) arg, &abinfo,
+ sizeof(abinfo)) ? -EFAULT : 0;
+ case SNDCTL_DSP_GETOPTR:
+ if (!(file->f_mode & FMODE_WRITE))
+ return -EINVAL;
+ if (codec_independent_spdif_locked > 0) {
+ if (!dmabuf->ready && (val = prog_dmabuf(state, 2)) != 0)
+ return val;
+ } else {
+ if (controller_independent_spdif_locked > 0) {
+ if (!dmabuf->ready && (val = prog_dmabuf(state, 3)) != 0)
+ return val;
+ } else {
+ if (!dmabuf->ready && (val = prog_dmabuf(state, 0)) != 0)
+ return val;
+ }
+ }
+ spin_lock_irqsave(&state->card->lock, flags);
+ val = ali_get_free_write_space(state);
+ cinfo.bytes = dmabuf->total_bytes;
+ cinfo.ptr = dmabuf->hwptr;
+ cinfo.blocks = val / dmabuf->userfragsize;
+ if (codec_independent_spdif_locked > 0) {
+ if (dmabuf->mapped && (dmabuf->trigger & SPDIF_ENABLE_OUTPUT)) {
+ dmabuf->count += val;
+ dmabuf->swptr = (dmabuf->swptr + val) % dmabuf->dmasize;
+ __ali_update_lvi(state, 2);
+ }
+ } else {
+ if (controller_independent_spdif_locked > 0) {
+ if (dmabuf->mapped && (dmabuf->trigger & SPDIF_ENABLE_OUTPUT)) {
+ dmabuf->count += val;
+ dmabuf->swptr = (dmabuf->swptr + val) % dmabuf->dmasize;
+ __ali_update_lvi(state, 3);
+ }
+ } else {
+ if (dmabuf->mapped && (dmabuf->trigger & PCM_ENABLE_OUTPUT)) {
+ dmabuf->count += val;
+ dmabuf->swptr = (dmabuf->swptr + val) % dmabuf->dmasize;
+ __ali_update_lvi(state, 0);
+ }
+ }
+ }
+ spin_unlock_irqrestore(&state->card->lock, flags);
+#if defined(DEBUG) || defined(DEBUG_MMAP)
+ printk("SNDCTL_DSP_GETOPTR %d, %d, %d, %d\n", cinfo.bytes,
+ cinfo.blocks, cinfo.ptr, dmabuf->count);
+#endif
+ return copy_to_user((void *) arg, &cinfo, sizeof(cinfo));
+ case SNDCTL_DSP_GETISPACE:
+ if (!(file->f_mode & FMODE_READ))
+ return -EINVAL;
+ if (!dmabuf->ready && (val = prog_dmabuf(state, 1)) != 0)
+ return val;
+ spin_lock_irqsave(&state->card->lock, flags);
+ abinfo.bytes = ali_get_available_read_data(state);
+ abinfo.fragsize = dmabuf->userfragsize;
+ abinfo.fragstotal = dmabuf->userfrags;
+ abinfo.fragments = abinfo.bytes / dmabuf->userfragsize;
+ spin_unlock_irqrestore(&state->card->lock, flags);
+#if defined(DEBUG) || defined(DEBUG_MMAP)
+ printk("SNDCTL_DSP_GETISPACE %d, %d, %d, %d\n",
+ abinfo.bytes, abinfo.fragsize, abinfo.fragments,
+ abinfo.fragstotal);
+#endif
+ return copy_to_user((void *) arg, &abinfo,
+ sizeof(abinfo)) ? -EFAULT : 0;
+ case SNDCTL_DSP_GETIPTR:
+ if (!(file->f_mode & FMODE_READ))
+ return -EINVAL;
+ if (!dmabuf->ready && (val = prog_dmabuf(state, 0)) != 0)
+ return val;
+ spin_lock_irqsave(&state->card->lock, flags);
+ val = ali_get_available_read_data(state);
+ cinfo.bytes = dmabuf->total_bytes;
+ cinfo.blocks = val / dmabuf->userfragsize;
+ cinfo.ptr = dmabuf->hwptr;
+ if (dmabuf->mapped && (dmabuf->trigger & PCM_ENABLE_INPUT)) {
+ dmabuf->count -= val;
+ dmabuf->swptr = (dmabuf->swptr + val) % dmabuf->dmasize;
+ __ali_update_lvi(state, 1);
+ }
+ spin_unlock_irqrestore(&state->card->lock, flags);
+#if defined(DEBUG) || defined(DEBUG_MMAP)
+ printk("SNDCTL_DSP_GETIPTR %d, %d, %d, %d\n", cinfo.bytes,
+ cinfo.blocks, cinfo.ptr, dmabuf->count);
+#endif
+ return copy_to_user((void *) arg, &cinfo, sizeof(cinfo));
+ case SNDCTL_DSP_NONBLOCK:
+#ifdef DEBUG
+ printk("SNDCTL_DSP_NONBLOCK\n");
+#endif
+ file->f_flags |= O_NONBLOCK;
+ return 0;
+ case SNDCTL_DSP_GETCAPS:
+#ifdef DEBUG
+ printk("SNDCTL_DSP_GETCAPS\n");
+#endif
+ return put_user(DSP_CAP_REALTIME | DSP_CAP_TRIGGER |
+ DSP_CAP_MMAP | DSP_CAP_BIND, (int *) arg);
+ case SNDCTL_DSP_GETTRIGGER:
+ val = 0;
+#ifdef DEBUG
+ printk("SNDCTL_DSP_GETTRIGGER 0x%x\n", dmabuf->trigger);
+#endif
+ return put_user(dmabuf->trigger, (int *) arg);
+ case SNDCTL_DSP_SETTRIGGER:
+ if (get_user(val, (int *) arg))
+ return -EFAULT;
+#if defined(DEBUG) || defined(DEBUG_MMAP)
+ printk("SNDCTL_DSP_SETTRIGGER 0x%x\n", val);
+#endif
+ if (!(val & PCM_ENABLE_INPUT) && dmabuf->enable == ADC_RUNNING) {
+ stop_adc(state);
+ }
+ if (!(val & PCM_ENABLE_OUTPUT) && dmabuf->enable == DAC_RUNNING) {
+ stop_dac(state);
+ }
+ if (!(val & SPDIF_ENABLE_OUTPUT) && dmabuf->enable == CODEC_SPDIFOUT_RUNNING) {
+ stop_spdifout(state);
+ }
+ if (!(val & SPDIF_ENABLE_OUTPUT) && dmabuf->enable == CONTROLLER_SPDIFOUT_RUNNING) {
+ stop_spdifout(state);
+ }
+ dmabuf->trigger = val;
+ if (val & PCM_ENABLE_OUTPUT && !(dmabuf->enable & DAC_RUNNING)) {
+ if (!dmabuf->write_channel) {
+ dmabuf->ready = 0;
+ dmabuf->write_channel = state->card->alloc_pcm_channel(state->card);
+ if (!dmabuf->write_channel)
+ return -EBUSY;
+ }
+ if (!dmabuf->ready && (ret = prog_dmabuf(state, 0)))
+ return ret;
+ if (dmabuf->mapped) {
+ spin_lock_irqsave(&state->card->lock, flags);
+ ali_update_ptr(state);
+ dmabuf->count = 0;
+ dmabuf->swptr = dmabuf->hwptr;
+ dmabuf->count = ali_get_free_write_space(state);
+ dmabuf->swptr = (dmabuf->swptr + dmabuf->count) % dmabuf->dmasize;
+ __ali_update_lvi(state, 0);
+ spin_unlock_irqrestore(&state->card->lock,
+ flags);
+ } else
+ start_dac(state);
+ }
+ if (val & SPDIF_ENABLE_OUTPUT && !(dmabuf->enable & CODEC_SPDIFOUT_RUNNING)) {
+ if (!dmabuf->codec_spdifout_channel) {
+ dmabuf->ready = 0;
+ dmabuf->codec_spdifout_channel = state->card->alloc_codec_spdifout_channel(state->card);
+ if (!dmabuf->codec_spdifout_channel)
+ return -EBUSY;
+ }
+ if (!dmabuf->ready && (ret = prog_dmabuf(state, 2)))
+ return ret;
+ if (dmabuf->mapped) {
+ spin_lock_irqsave(&state->card->lock, flags);
+ ali_update_ptr(state);
+ dmabuf->count = 0;
+ dmabuf->swptr = dmabuf->hwptr;
+ dmabuf->count = ali_get_free_write_space(state);
+ dmabuf->swptr = (dmabuf->swptr + dmabuf->count) % dmabuf->dmasize;
+ __ali_update_lvi(state, 2);
+ spin_unlock_irqrestore(&state->card->lock,
+ flags);
+ } else
+ start_spdifout(state);
+ }
+ if (val & SPDIF_ENABLE_OUTPUT && !(dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING)) {
+ if (!dmabuf->controller_spdifout_channel) {
+ dmabuf->ready = 0;
+ dmabuf->controller_spdifout_channel = state->card->alloc_controller_spdifout_channel(state->card);
+ if (!dmabuf->controller_spdifout_channel)
+ return -EBUSY;
+ }
+ if (!dmabuf->ready && (ret = prog_dmabuf(state, 3)))
+ return ret;
+ if (dmabuf->mapped) {
+ spin_lock_irqsave(&state->card->lock, flags);
+ ali_update_ptr(state);
+ dmabuf->count = 0;
+ dmabuf->swptr = dmabuf->hwptr;
+ dmabuf->count = ali_get_free_write_space(state);
+ dmabuf->swptr = (dmabuf->swptr + dmabuf->count) % dmabuf->dmasize;
+ __ali_update_lvi(state, 3);
+ spin_unlock_irqrestore(&state->card->lock, flags);
+ } else
+ start_spdifout(state);
+ }
+ if (val & PCM_ENABLE_INPUT && !(dmabuf->enable & ADC_RUNNING)) {
+ if (!dmabuf->read_channel) {
+ dmabuf->ready = 0;
+ dmabuf->read_channel = state->card->alloc_rec_pcm_channel(state->card);
+ if (!dmabuf->read_channel)
+ return -EBUSY;
+ }
+ if (!dmabuf->ready && (ret = prog_dmabuf(state, 1)))
+ return ret;
+ if (dmabuf->mapped) {
+ spin_lock_irqsave(&state->card->lock,
+ flags);
+ ali_update_ptr(state);
+ dmabuf->swptr = dmabuf->hwptr;
+ dmabuf->count = 0;
+ spin_unlock_irqrestore(&state->card->lock, flags);
+ }
+ ali_update_lvi(state, 1);
+ start_adc(state);
+ }
+ return 0;
+ case SNDCTL_DSP_SETDUPLEX:
+#ifdef DEBUG
+ printk("SNDCTL_DSP_SETDUPLEX\n");
+#endif
+ return -EINVAL;
+ case SNDCTL_DSP_GETODELAY:
+ if (!(file->f_mode & FMODE_WRITE))
+ return -EINVAL;
+ spin_lock_irqsave(&state->card->lock, flags);
+ ali_update_ptr(state);
+ val = dmabuf->count;
+ spin_unlock_irqrestore(&state->card->lock, flags);
+#ifdef DEBUG
+ printk("SNDCTL_DSP_GETODELAY %d\n", dmabuf->count);
+#endif
+ return put_user(val, (int *) arg);
+ case SOUND_PCM_READ_RATE:
+#ifdef DEBUG
+ printk("SOUND_PCM_READ_RATE %d\n", dmabuf->rate);
+#endif
+ return put_user(dmabuf->rate, (int *) arg);
+ case SOUND_PCM_READ_CHANNELS:
+#ifdef DEBUG
+ printk("SOUND_PCM_READ_CHANNELS\n");
+#endif
+ return put_user(2, (int *) arg);
+ case SOUND_PCM_READ_BITS:
+#ifdef DEBUG
+ printk("SOUND_PCM_READ_BITS\n");
+#endif
+ return put_user(AFMT_S16_LE, (int *) arg);
+ case SNDCTL_DSP_SETSPDIF: /* Set S/PDIF Control register */
+#ifdef DEBUG
+ printk("SNDCTL_DSP_SETSPDIF\n");
+#endif
+ if (get_user(val, (int *) arg))
+ return -EFAULT;
+ /* Check to make sure the codec supports S/PDIF transmitter */
+ if ((state->card->ac97_features & 4)) {
+ /* mask out the transmitter speed bits so the user can't set them */
+ val &= ~0x3000;
+ /* Add the current transmitter speed bits to the passed value */
+ ret = ali_ac97_get(codec, AC97_SPDIF_CONTROL);
+ val |= (ret & 0x3000);
+ ali_ac97_set(codec, AC97_SPDIF_CONTROL, val);
+ if (ali_ac97_get(codec, AC97_SPDIF_CONTROL) != val) {
+ printk(KERN_ERR "ali_audio: Unable to set S/PDIF configuration to 0x%04x.\n", val);
+ return -EFAULT;
+ }
+ }
+#ifdef DEBUG
+ else
+ printk(KERN_WARNING "ali_audio: S/PDIF transmitter not avalible.\n");
+#endif
+ return put_user(val, (int *) arg);
+ case SNDCTL_DSP_GETSPDIF: /* Get S/PDIF Control register */
+#ifdef DEBUG
+ printk("SNDCTL_DSP_GETSPDIF\n");
+#endif
+ if (get_user(val, (int *) arg))
+ return -EFAULT;
+ /* Check to make sure the codec supports S/PDIF transmitter */
+ if (!(state->card->ac97_features & 4)) {
+#ifdef DEBUG
+ printk(KERN_WARNING "ali_audio: S/PDIF transmitter not avalible.\n");
+#endif
+ val = 0;
+ } else {
+ val = ali_ac97_get(codec, AC97_SPDIF_CONTROL);
+ }
+
+ return put_user(val, (int *) arg);
+//end add support spdif out
+//add support 4,6 channel
+ case SNDCTL_DSP_GETCHANNELMASK:
+#ifdef DEBUG
+ printk("SNDCTL_DSP_GETCHANNELMASK\n");
+#endif
+ if (get_user(val, (int *) arg))
+ return -EFAULT;
+ /* Based on AC'97 DAC support, not ICH hardware */
+ val = DSP_BIND_FRONT;
+ if (state->card->ac97_features & 0x0004)
+ val |= DSP_BIND_SPDIF;
+ if (state->card->ac97_features & 0x0080)
+ val |= DSP_BIND_SURR;
+ if (state->card->ac97_features & 0x0140)
+ val |= DSP_BIND_CENTER_LFE;
+ return put_user(val, (int *) arg);
+ case SNDCTL_DSP_BIND_CHANNEL:
+#ifdef DEBUG
+ printk("SNDCTL_DSP_BIND_CHANNEL\n");
+#endif
+ if (get_user(val, (int *) arg))
+ return -EFAULT;
+ if (val == DSP_BIND_QUERY) {
+ val = DSP_BIND_FRONT; /* Always report this as being enabled */
+ if (state->card->ac97_status & SPDIF_ON)
+ val |= DSP_BIND_SPDIF;
+ else {
+ if (state->card->ac97_status & SURR_ON)
+ val |= DSP_BIND_SURR;
+ if (state->card->
+ ac97_status & CENTER_LFE_ON)
+ val |= DSP_BIND_CENTER_LFE;
+ }
+ } else { /* Not a query, set it */
+ if (!(file->f_mode & FMODE_WRITE))
+ return -EINVAL;
+ if (dmabuf->enable == DAC_RUNNING) {
+ stop_dac(state);
+ }
+ if (val & DSP_BIND_SPDIF) { /* Turn on SPDIF */
+ /* Ok, this should probably define what slots
+ * to use. For now, we'll only set it to the
+ * defaults:
+ *
+ * non multichannel codec maps to slots 3&4
+ * 2 channel codec maps to slots 7&8
+ * 4 channel codec maps to slots 6&9
+ * 6 channel codec maps to slots 10&11
+ *
+ * there should be some way for the app to
+ * select the slot assignment.
+ */
+ i_scr = inl(state->card->iobase + ALI_SCR);
+ if (codec_independent_spdif_locked > 0) {
+
+ if ((i_scr & 0x00300000) == 0x00100000) {
+ ali_set_spdif_output(state, AC97_EA_SPSA_7_8, codec_independent_spdif_locked);
+ } else {
+ if ((i_scr & 0x00300000) == 0x00200000) {
+ ali_set_spdif_output(state, AC97_EA_SPSA_6_9, codec_independent_spdif_locked);
+ } else {
+ if ((i_scr & 0x00300000) == 0x00300000) {
+ ali_set_spdif_output(state, AC97_EA_SPSA_10_11, codec_independent_spdif_locked);
+ }
+ }
+ }
+ } else { /* codec spdif out (pcm out share ) */
+ ali_set_spdif_output(state, AC97_EA_SPSA_3_4, dmabuf->rate); //I do not modify
+ }
+
+ if (!(state->card->ac97_status & SPDIF_ON))
+ val &= ~DSP_BIND_SPDIF;
+ } else {
+ int mask;
+ int channels;
+ /* Turn off S/PDIF if it was on */
+ if (state->card->ac97_status & SPDIF_ON)
+ ali_set_spdif_output(state, -1, 0);
+ mask =
+ val & (DSP_BIND_FRONT | DSP_BIND_SURR |
+ DSP_BIND_CENTER_LFE);
+ switch (mask) {
+ case DSP_BIND_FRONT:
+ channels = 2;
+ break;
+ case DSP_BIND_FRONT | DSP_BIND_SURR:
+ channels = 4;
+ break;
+ case DSP_BIND_FRONT | DSP_BIND_SURR | DSP_BIND_CENTER_LFE:
+ channels = 6;
+ break;
+ default:
+ val = DSP_BIND_FRONT;
+ channels = 2;
+ break;
+ }
+ ali_set_dac_channels(state, channels);
+ /* check that they really got turned on */
+ if (!state->card->ac97_status & SURR_ON)
+ val &= ~DSP_BIND_SURR;
+ if (!state->card->
+ ac97_status & CENTER_LFE_ON)
+ val &= ~DSP_BIND_CENTER_LFE;
+ }
+ }
+ return put_user(val, (int *) arg);
+ case SNDCTL_DSP_MAPINBUF:
+ case SNDCTL_DSP_MAPOUTBUF:
+ case SNDCTL_DSP_SETSYNCRO:
+ case SOUND_PCM_WRITE_FILTER:
+ case SOUND_PCM_READ_FILTER:
+ return -EINVAL;
+ }
+ return -EINVAL;
+}
+
+static int ali_open(struct inode *inode, struct file *file)
+{
+ int i = 0;
+ struct ali_card *card = devs;
+ struct ali_state *state = NULL;
+ struct dmabuf *dmabuf = NULL;
+ unsigned int i_scr;
+
+ /* find an available virtual channel (instance of /dev/dsp) */
+
+ while (card != NULL) {
+
+ /*
+ * If we are initializing and then fail, card could go
+ * away unuexpectedly while we are in the for() loop.
+ * So, check for card on each iteration before we check
+ * for card->initializing to avoid a possible oops.
+ * This usually only matters for times when the driver is
+ * autoloaded by kmod.
+ */
+ for (i = 0; i < 50 && card && card->initializing; i++) {
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(HZ / 20);
+ }
+
+ for (i = 0; i < NR_HW_CH && card && !card->initializing; i++) {
+ if (card->states[i] == NULL) {
+ state = card->states[i] = (struct ali_state *) kmalloc(sizeof(struct ali_state), GFP_KERNEL);
+ if (state == NULL)
+ return -ENOMEM;
+ memset(state, 0, sizeof(struct ali_state));
+ dmabuf = &state->dmabuf;
+ goto found_virt;
+ }
+ }
+ card = card->next;
+ }
+
+ /* no more virtual channel avaiable */
+ if (!state)
+ return -ENODEV;
+found_virt:
+ /* initialize the virtual channel */
+
+ state->virt = i;
+ state->card = card;
+ state->magic = ALI5455_STATE_MAGIC;
+ init_waitqueue_head(&dmabuf->wait);
+ init_MUTEX(&state->open_sem);
+ file->private_data = state;
+ dmabuf->trigger = 0;
+ /* allocate hardware channels */
+ if (file->f_mode & FMODE_READ) {
+ if ((dmabuf->read_channel =
+ card->alloc_rec_pcm_channel(card)) == NULL) {
+ kfree(card->states[i]);
+ card->states[i] = NULL;
+ return -EBUSY;
+ }
+ dmabuf->trigger |= PCM_ENABLE_INPUT;
+ ali_set_adc_rate(state, 8000);
+ }
+ if (file->f_mode & FMODE_WRITE) {
+ if (codec_independent_spdif_locked > 0) {
+ if ((dmabuf->codec_spdifout_channel = card->alloc_codec_spdifout_channel(card)) == NULL) {
+ kfree(card->states[i]);
+ card->states[i] = NULL;
+ return -EBUSY;
+ }
+ dmabuf->trigger |= SPDIF_ENABLE_OUTPUT;
+ ali_set_codecspdifout_rate(state, codec_independent_spdif_locked); //It must add
+ i_scr = inl(state->card->iobase + ALI_SCR);
+ if ((i_scr & 0x00300000) == 0x00100000) {
+ ali_set_spdif_output(state, AC97_EA_SPSA_7_8, codec_independent_spdif_locked);
+ } else {
+ if ((i_scr & 0x00300000) == 0x00200000) {
+ ali_set_spdif_output(state, AC97_EA_SPSA_6_9, codec_independent_spdif_locked);
+ } else {
+ if ((i_scr & 0x00300000) == 0x00300000) {
+ ali_set_spdif_output(state, AC97_EA_SPSA_10_11, codec_independent_spdif_locked);
+ } else {
+ ali_set_spdif_output(state, AC97_EA_SPSA_7_8, codec_independent_spdif_locked);
+ }
+ }
+
+ }
+ } else {
+ if (controller_independent_spdif_locked > 0) {
+ if ((dmabuf->controller_spdifout_channel = card->alloc_controller_spdifout_channel(card)) == NULL) {
+ kfree(card->states[i]);
+ card->states[i] = NULL;
+ return -EBUSY;
+ }
+ dmabuf->trigger |= SPDIF_ENABLE_OUTPUT;
+ ali_set_spdifout_rate(state, controller_independent_spdif_locked);
+ } else {
+ if ((dmabuf->write_channel = card->alloc_pcm_channel(card)) == NULL) {
+ kfree(card->states[i]);
+ card->states[i] = NULL;
+ return -EBUSY;
+ }
+ /* Initialize to 8kHz? What if we don't support 8kHz? */
+ /* Let's change this to check for S/PDIF stuff */
+
+ dmabuf->trigger |= PCM_ENABLE_OUTPUT;
+ if (codec_pcmout_share_spdif_locked) {
+ ali_set_dac_rate(state, codec_pcmout_share_spdif_locked);
+ ali_set_spdif_output(state, AC97_EA_SPSA_3_4, codec_pcmout_share_spdif_locked);
+ } else {
+ ali_set_dac_rate(state, 8000);
+ }
+ }
+
+ }
+ }
+
+ /* set default sample format. According to OSS Programmer's Guide /dev/dsp
+ should be default to unsigned 8-bits, mono, with sample rate 8kHz and
+ /dev/dspW will accept 16-bits sample, but we don't support those so we
+ set it immediately to stereo and 16bit, which is all we do support */
+ dmabuf->fmt |= ALI5455_FMT_16BIT | ALI5455_FMT_STEREO;
+ dmabuf->ossfragsize = 0;
+ dmabuf->ossmaxfrags = 0;
+ dmabuf->subdivision = 0;
+ state->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
+ outl(0x00000000, card->iobase + ALI_INTERRUPTCR);
+ outl(0x00000000, card->iobase + ALI_INTERRUPTSR);
+ return 0;
+}
+
+static int ali_release(struct inode *inode, struct file *file)
+{
+ struct ali_state *state = (struct ali_state *) file->private_data;
+ struct ali_card *card = state->card;
+ struct dmabuf *dmabuf = &state->dmabuf;
+ unsigned long flags;
+ lock_kernel();
+
+ /* stop DMA state machine and free DMA buffers/channels */
+ if (dmabuf->trigger & PCM_ENABLE_OUTPUT)
+ drain_dac(state, 0);
+
+ if (dmabuf->trigger & SPDIF_ENABLE_OUTPUT)
+ drain_spdifout(state, 0);
+
+ if (dmabuf->trigger & PCM_ENABLE_INPUT)
+ stop_adc(state);
+
+ spin_lock_irqsave(&card->lock, flags);
+ dealloc_dmabuf(state);
+ if (file->f_mode & FMODE_WRITE) {
+ if (codec_independent_spdif_locked > 0) {
+ state->card->free_pcm_channel(state->card, dmabuf->codec_spdifout_channel->num);
+ } else {
+ if (controller_independent_spdif_locked > 0)
+ state->card->free_pcm_channel(state->card,
+ dmabuf->controller_spdifout_channel->num);
+ else state->card->free_pcm_channel(state->card,
+ dmabuf->write_channel->num);
+ }
+ }
+ if (file->f_mode & FMODE_READ)
+ state->card->free_pcm_channel(state->card, dmabuf->read_channel->num);
+
+ state->card->states[state->virt] = NULL;
+ kfree(state);
+ spin_unlock_irqrestore(&card->lock, flags);
+ unlock_kernel();
+ return 0;
+}
+
+static /*const */ struct file_operations ali_audio_fops = {
+ owner:THIS_MODULE,
+ llseek:no_llseek,
+ read:ali_read,
+ write:ali_write,
+ poll:ali_poll,
+ ioctl:ali_ioctl,
+ mmap:ali_mmap,
+ open:ali_open,
+ release:ali_release,
+};
+
+/* Read AC97 codec registers */
+static u16 ali_ac97_get(struct ac97_codec *dev, u8 reg)
+{
+ struct ali_card *card = dev->private_data;
+ int count1 = 100;
+ char val;
+ unsigned short int data = 0, count, addr1, addr2 = 0;
+
+ spin_lock(&card->ac97_lock);
+ while (count1-- && (inl(card->iobase + ALI_CAS) & 0x80000000))
+ udelay(1);
+
+ addr1 = reg;
+ reg |= 0x0080;
+ for (count = 0; count < 0x7f; count++) {
+ val = inb(card->iobase + ALI_CSPSR);
+ if (val & 0x08)
+ break;
+ }
+ if (count == 0x7f)
+ {
+ spin_unlock(&card->ac97_lock);
+ return -1;
+ }
+ outw(reg, (card->iobase + ALI_CPR) + 2);
+ for (count = 0; count < 0x7f; count++) {
+ val = inb(card->iobase + ALI_CSPSR);
+ if (val & 0x02) {
+ data = inw(card->iobase + ALI_SPR);
+ addr2 = inw((card->iobase + ALI_SPR) + 2);
+ break;
+ }
+ }
+ spin_unlock(&card->ac97_lock);
+ if (count == 0x7f)
+ return -1;
+ if (addr2 != addr1)
+ return -1;
+ return ((u16) data);
+}
+
+/* write ac97 codec register */
+
+static void ali_ac97_set(struct ac97_codec *dev, u8 reg, u16 data)
+{
+ struct ali_card *card = dev->private_data;
+ int count1 = 100;
+ char val;
+ unsigned short int count;
+
+ spin_lock(&card->ac97_lock);
+ while (count1-- && (inl(card->iobase + ALI_CAS) & 0x80000000))
+ udelay(1);
+
+ for (count = 0; count < 0x7f; count++) {
+ val = inb(card->iobase + ALI_CSPSR);
+ if (val & 0x08)
+ break;
+ }
+ if (count == 0x7f) {
+ printk(KERN_WARNING "ali_ac97_set: AC97 codec register access timed out. \n");
+ spin_unlock(&card->ac97_lock);
+ return;
+ }
+ outw(data, (card->iobase + ALI_CPR));
+ outb(reg, (card->iobase + ALI_CPR) + 2);
+ for (count = 0; count < 0x7f; count++) {
+ val = inb(card->iobase + ALI_CSPSR);
+ if (val & 0x01)
+ break;
+ }
+ spin_unlock(&card->ac97_lock);
+ if (count == 0x7f)
+ printk(KERN_WARNING "ali_ac97_set: AC97 codec register access timed out. \n");
+ return;
+}
+
+/* OSS /dev/mixer file operation methods */
+
+static int ali_open_mixdev(struct inode *inode, struct file *file)
+{
+ int i;
+ int minor = minor(inode->i_rdev);
+ struct ali_card *card = devs;
+ for (card = devs; card != NULL; card = card->next) {
+ /*
+ * If we are initializing and then fail, card could go
+ * away unuexpectedly while we are in the for() loop.
+ * So, check for card on each iteration before we check
+ * for card->initializing to avoid a possible oops.
+ * This usually only matters for times when the driver is
+ * autoloaded by kmod.
+ */
+ for (i = 0; i < 50 && card && card->initializing; i++) {
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(HZ / 20);
+ }
+ for (i = 0; i < NR_AC97 && card && !card->initializing; i++)
+ if (card->ac97_codec[i] != NULL
+ && card->ac97_codec[i]->dev_mixer == minor) {
+ file->private_data = card->ac97_codec[i];
+ return 0;
+ }
+ }
+ return -ENODEV;
+}
+
+static int ali_ioctl_mixdev(struct inode *inode,
+ struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct ac97_codec *codec = (struct ac97_codec *) file->private_data;
+ return codec->mixer_ioctl(codec, cmd, arg);
+}
+
+static /*const */ struct file_operations ali_mixer_fops = {
+ owner:THIS_MODULE,
+ llseek:no_llseek,
+ ioctl:ali_ioctl_mixdev,
+ open:ali_open_mixdev,
+};
+
+/* AC97 codec initialisation. These small functions exist so we don't
+ duplicate code between module init and apm resume */
+
+static inline int ali_ac97_exists(struct ali_card *card, int ac97_number)
+{
+ unsigned int i = 1;
+ u32 reg = inl(card->iobase + ALI_RTSR);
+ if (ac97_number) {
+ while (i < 100) {
+
+ reg = inl(card->iobase + ALI_RTSR);
+ if (reg & 0x40) {
+ break;
+ } else {
+ outl(reg | 0x00000040,
+ card->iobase + 0x34);
+ udelay(1);
+ }
+ i++;
+ }
+
+ } else {
+ while (i < 100) {
+ reg = inl(card->iobase + ALI_RTSR);
+ if (reg & 0x80) {
+ break;
+ } else {
+ outl(reg | 0x00000080,
+ card->iobase + 0x34);
+ udelay(1);
+ }
+ i++;
+ }
+ }
+
+ if (ac97_number)
+ return reg & 0x40;
+ else
+ return reg & 0x80;
+}
+
+static inline int ali_ac97_enable_variable_rate(struct ac97_codec *codec)
+{
+ ali_ac97_set(codec, AC97_EXTENDED_STATUS, 9);
+ ali_ac97_set(codec, AC97_EXTENDED_STATUS, ali_ac97_get(codec, AC97_EXTENDED_STATUS) | 0xE800);
+ return (ali_ac97_get(codec, AC97_EXTENDED_STATUS) & 1);
+}
+
+
+static int ali_ac97_probe_and_powerup(struct ali_card *card, struct ac97_codec *codec)
+{
+ /* Returns 0 on failure */
+ int i;
+ u16 addr;
+ if (ac97_probe_codec(codec) == 0)
+ return 0;
+ /* ac97_probe_codec is success ,then begin to init codec */
+ ali_ac97_set(codec, AC97_RESET, 0xffff);
+ if (card->channel[0].used == 1) {
+ ali_ac97_set(codec, AC97_RECORD_SELECT, 0x0000);
+ ali_ac97_set(codec, AC97_LINEIN_VOL, 0x0808);
+ ali_ac97_set(codec, AC97_RECORD_GAIN, 0x0F0F);
+ }
+
+ if (card->channel[2].used == 1) //if MICin then init codec
+ {
+ ali_ac97_set(codec, AC97_RECORD_SELECT, 0x0000);
+ ali_ac97_set(codec, AC97_MIC_VOL, 0x8808);
+ ali_ac97_set(codec, AC97_RECORD_GAIN, 0x0F0F);
+ ali_ac97_set(codec, AC97_RECORD_GAIN_MIC, 0x0000);
+ }
+
+ ali_ac97_set(codec, AC97_MASTER_VOL_STEREO, 0x0000);
+ ali_ac97_set(codec, AC97_HEADPHONE_VOL, 0x0000);
+ ali_ac97_set(codec, AC97_PCMOUT_VOL, 0x0000);
+ ali_ac97_set(codec, AC97_CD_VOL, 0x0808);
+ ali_ac97_set(codec, AC97_VIDEO_VOL, 0x0808);
+ ali_ac97_set(codec, AC97_AUX_VOL, 0x0808);
+ ali_ac97_set(codec, AC97_PHONE_VOL, 0x8048);
+ ali_ac97_set(codec, AC97_PCBEEP_VOL, 0x0000);
+ ali_ac97_set(codec, AC97_GENERAL_PURPOSE, AC97_GP_MIX);
+ ali_ac97_set(codec, AC97_MASTER_VOL_MONO, 0x0000);
+ ali_ac97_set(codec, 0x38, 0x0000);
+ addr = ali_ac97_get(codec, 0x2a);
+ ali_ac97_set(codec, 0x2a, addr | 0x0001);
+ addr = ali_ac97_get(codec, 0x2a);
+ addr = ali_ac97_get(codec, 0x28);
+ ali_ac97_set(codec, 0x2c, 0xbb80);
+ addr = ali_ac97_get(codec, 0x2c);
+ /* power it all up */
+ ali_ac97_set(codec, AC97_POWER_CONTROL,
+ ali_ac97_get(codec, AC97_POWER_CONTROL) & ~0x7f00);
+ /* wait for analog ready */
+ for (i = 10; i && ((ali_ac97_get(codec, AC97_POWER_CONTROL) & 0xf) != 0xf); i--) {
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(HZ / 20);
+ }
+ /* FIXME !! */
+ i++;
+ return i;
+}
+
+
+/* I clone ali5455(2.4.7 ) not clone i810_audio(2.4.18) */
+
+static int ali_reset_5455(struct ali_card *card)
+{
+ outl(0x80000003, card->iobase + ALI_SCR);
+ outl(0x83838383, card->iobase + ALI_FIFOCR1);
+ outl(0x83838383, card->iobase + ALI_FIFOCR2);
+ if (controller_pcmout_share_spdif_locked > 0) {
+ outl((inl(card->iobase + ALI_SPDIFICS) | 0x00000001),
+ card->iobase + ALI_SPDIFICS);
+ outl(0x0408000a, card->iobase + ALI_INTERFACECR);
+ } else {
+ if (codec_independent_spdif_locked > 0) {
+ outl((inl(card->iobase + ALI_SCR) | 0x00100000), card->iobase + ALI_SCR); // now I select slot 7 & 8
+ outl(0x00200000, card->iobase + ALI_INTERFACECR); //enable codec independent spdifout
+ } else
+ outl(0x04080002, card->iobase + ALI_INTERFACECR);
+ }
+
+ outl(0x00000000, card->iobase + ALI_INTERRUPTCR);
+ outl(0x00000000, card->iobase + ALI_INTERRUPTSR);
+ if (controller_independent_spdif_locked > 0)
+ outl((inl(card->iobase + ALI_SPDIFICS) | 0x00000001),
+ card->iobase + ALI_SPDIFICS);
+ return 1;
+}
+
+
+static int ali_ac97_random_init_stuff(struct ali_card
+ *card)
+{
+ u32 reg = inl(card->iobase + ALI_SCR);
+ int i = 0;
+ reg = inl(card->iobase + ALI_SCR);
+ if ((reg & 2) == 0) /* Cold required */
+ reg |= 2;
+ else
+ reg |= 1; /* Warm */
+ reg &= ~0x80000000; /* ACLink on */
+ outl(reg, card->iobase + ALI_SCR);
+
+ while (i < 10) {
+ if ((inl(card->iobase + 0x18) & (1 << 1)) == 0)
+ break;
+ current->state = TASK_UNINTERRUPTIBLE;
+ schedule_timeout(HZ / 20);
+ i++;
+ }
+ if (i == 10) {
+ printk(KERN_ERR "ali_audio: AC'97 reset failed.\n");
+ return 0;
+ }
+
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(HZ / 2);
+ return 1;
+}
+
+/* AC97 codec initialisation. */
+
+static int __init ali_ac97_init(struct ali_card *card)
+{
+ int num_ac97 = 0;
+ int total_channels = 0;
+ struct ac97_codec *codec;
+ u16 eid;
+
+ if (!ali_ac97_random_init_stuff(card))
+ return 0;
+
+ /* Number of channels supported */
+ /* What about the codec? Just because the ICH supports */
+ /* multiple channels doesn't mean the codec does. */
+ /* we'll have to modify this in the codec section below */
+ /* to reflect what the codec has. */
+ /* ICH and ICH0 only support 2 channels so don't bother */
+ /* to check.... */
+ inl(card->iobase + ALI_CPR);
+ card->channels = 2;
+
+ for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++) {
+
+ /* Assume codec isn't available until we go through the
+ * gauntlet below */
+ card->ac97_codec[num_ac97] = NULL;
+ /* The ICH programmer's reference says you should */
+ /* check the ready status before probing. So we chk */
+ /* What do we do if it's not ready? Wait and try */
+ /* again, or abort? */
+ if (!ali_ac97_exists(card, num_ac97)) {
+ if (num_ac97 == 0)
+ printk(KERN_ERR "ali_audio: Primary codec not ready.\n");
+ break;
+ }
+
+ if ((codec = ac97_alloc_codec()) == NULL)
+ return -ENOMEM;
+ /* initialize some basic codec information, other fields will be filled
+ in ac97_probe_codec */
+ codec->private_data = card;
+ codec->id = num_ac97;
+ codec->codec_read = ali_ac97_get;
+ codec->codec_write = ali_ac97_set;
+ if (!ali_ac97_probe_and_powerup(card, codec)) {
+ printk(KERN_ERR "ali_audio: timed out waiting for codec %d analog ready",
+ num_ac97);
+ kfree(codec);
+ break; /* it didn't work */
+ }
+
+ /* Store state information about S/PDIF transmitter */
+ card->ac97_status = 0;
+ /* Don't attempt to get eid until powerup is complete */
+ eid = ali_ac97_get(codec, AC97_EXTENDED_ID);
+ if (eid == 0xFFFF) {
+ printk(KERN_ERR "ali_audio: no codec attached ?\n");
+ kfree(codec);
+ break;
+ }
+
+ card->ac97_features = eid;
+ /* Now check the codec for useful features to make up for
+ the dumbness of the ali5455 hardware engine */
+ if (!(eid & 0x0001))
+ printk(KERN_WARNING
+ "ali_audio: only 48Khz playback available.\n");
+ else {
+ if (!ali_ac97_enable_variable_rate(codec)) {
+ printk(KERN_WARNING
+ "ali_audio: Codec refused to allow VRA, using 48Khz only.\n");
+ card->ac97_features &= ~1;
+ }
+ }
+
+ /* Determine how many channels the codec(s) support */
+ /* - The primary codec always supports 2 */
+ /* - If the codec supports AMAP, surround DACs will */
+ /* automaticlly get assigned to slots. */
+ /* * Check for surround DACs and increment if */
+ /* found. */
+ /* - Else check if the codec is revision 2.2 */
+ /* * If surround DACs exist, assign them to slots */
+ /* and increment channel count. */
+
+ /* All of this only applies to ICH2 and above. ICH */
+ /* and ICH0 only support 2 channels. ICH2 will only */
+ /* support multiple codecs in a "split audio" config. */
+ /* as described above. */
+
+ /* TODO: Remove all the debugging messages! */
+
+ if ((eid & 0xc000) == 0) /* primary codec */
+ total_channels += 2;
+ if ((codec->dev_mixer = register_sound_mixer(&ali_mixer_fops, -1)) < 0) {
+ printk(KERN_ERR "ali_audio: couldn't register mixer!\n");
+ kfree(codec);
+ break;
+ }
+ card->ac97_codec[num_ac97] = codec;
+ }
+ /* pick the minimum of channels supported by ICHx or codec(s) */
+ card->channels = (card->channels > total_channels) ? total_channels : card->channels;
+ return num_ac97;
+}
+
+static void __init ali_configure_clocking(void)
+{
+ struct ali_card *card;
+ struct ali_state *state;
+ struct dmabuf *dmabuf;
+ unsigned int i, offset, new_offset;
+ unsigned long flags;
+ card = devs;
+
+ /* We could try to set the clocking for multiple cards, but can you even have
+ * more than one ali in a machine? Besides, clocking is global, so unless
+ * someone actually thinks more than one ali in a machine is possible and
+ * decides to rewrite that little bit, setting the rate for more than one card
+ * is a waste of time.
+ */
+ if (card != NULL) {
+ state = card->states[0] = (struct ali_state *)
+ kmalloc(sizeof(struct ali_state), GFP_KERNEL);
+ if (state == NULL)
+ return;
+ memset(state, 0, sizeof(struct ali_state));
+ dmabuf = &state->dmabuf;
+ dmabuf->write_channel = card->alloc_pcm_channel(card);
+ state->virt = 0;
+ state->card = card;
+ state->magic = ALI5455_STATE_MAGIC;
+ init_waitqueue_head(&dmabuf->wait);
+ init_MUTEX(&state->open_sem);
+ dmabuf->fmt = ALI5455_FMT_STEREO | ALI5455_FMT_16BIT;
+ dmabuf->trigger = PCM_ENABLE_OUTPUT;
+ ali_set_dac_rate(state, 48000);
+ if (prog_dmabuf(state, 0) != 0)
+ goto config_out_nodmabuf;
+
+ if (dmabuf->dmasize < 16384)
+ goto config_out;
+
+ dmabuf->count = dmabuf->dmasize;
+ outb(31, card->iobase + dmabuf->write_channel->port + OFF_LVI);
+
+ local_irq_save(flags);
+ start_dac(state);
+ offset = ali_get_dma_addr(state, 0);
+ mdelay(50);
+ new_offset = ali_get_dma_addr(state, 0);
+ stop_dac(state);
+
+ outb(2, card->iobase + dmabuf->write_channel->port + OFF_CR);
+ local_irq_restore(flags);
+
+ i = new_offset - offset;
+
+ if (i == 0)
+ goto config_out;
+ i = i / 4 * 20;
+ if (i > 48500 || i < 47500) {
+ clocking = clocking * clocking / i;
+ }
+config_out:
+ dealloc_dmabuf(state);
+config_out_nodmabuf:
+ state->card->free_pcm_channel(state->card, state->dmabuf. write_channel->num);
+ kfree(state);
+ card->states[0] = NULL;
+ }
+}
+
+/* install the driver, we do not allocate hardware channel nor DMA buffer now, they are defered
+ until "ACCESS" time (in prog_dmabuf called by open/read/write/ioctl/mmap) */
+
+static int __init ali_probe(struct pci_dev *pci_dev, const struct pci_device_id
+ *pci_id)
+{
+ struct ali_card *card;
+ if (pci_enable_device(pci_dev))
+ return -EIO;
+ if (pci_set_dma_mask(pci_dev, ALI5455_DMA_MASK)) {
+ printk(KERN_ERR "ali5455: architecture does not support"
+ " 32bit PCI busmaster DMA\n");
+ return -ENODEV;
+ }
+
+ if ((card = kmalloc(sizeof(struct ali_card), GFP_KERNEL)) == NULL) {
+ printk(KERN_ERR "ali_audio: out of memory\n");
+ return -ENOMEM;
+ }
+ memset(card, 0, sizeof(*card));
+ card->initializing = 1;
+ card->iobase = pci_resource_start(pci_dev, 0);
+ card->pci_dev = pci_dev;
+ card->pci_id = pci_id->device;
+ card->irq = pci_dev->irq;
+ card->next = devs;
+ card->magic = ALI5455_CARD_MAGIC;
+#ifdef CONFIG_PM
+ card->pm_suspended = 0;
+#endif
+ spin_lock_init(&card->lock);
+ spin_lock_init(&card->ac97_lock);
+ devs = card;
+ pci_set_master(pci_dev);
+ printk(KERN_INFO "ali: %s found at IO 0x%04lx, IRQ %d\n",
+ card_names[pci_id->driver_data], card->iobase, card->irq);
+ card->alloc_pcm_channel = ali_alloc_pcm_channel;
+ card->alloc_rec_pcm_channel = ali_alloc_rec_pcm_channel;
+ card->alloc_rec_mic_channel = ali_alloc_rec_mic_channel;
+ card->alloc_codec_spdifout_channel = ali_alloc_codec_spdifout_channel;
+ card->alloc_controller_spdifout_channel = ali_alloc_controller_spdifout_channel;
+ card->free_pcm_channel = ali_free_pcm_channel;
+ card->channel[0].offset = 0;
+ card->channel[0].port = 0x40;
+ card->channel[0].num = 0;
+ card->channel[1].offset = 0;
+ card->channel[1].port = 0x50;
+ card->channel[1].num = 1;
+ card->channel[2].offset = 0;
+ card->channel[2].port = 0x60;
+ card->channel[2].num = 2;
+ card->channel[3].offset = 0;
+ card->channel[3].port = 0x70;
+ card->channel[3].num = 3;
+ card->channel[4].offset = 0;
+ card->channel[4].port = 0xb0;
+ card->channel[4].num = 4;
+ /* claim our iospace and irq */
+ request_region(card->iobase, 256, card_names[pci_id->driver_data]);
+ if (request_irq(card->irq, &ali_interrupt, SA_SHIRQ,
+ card_names[pci_id->driver_data], card)) {
+ printk(KERN_ERR "ali_audio: unable to allocate irq %d\n",
+ card->irq);
+ release_region(card->iobase, 256);
+ kfree(card);
+ return -ENODEV;
+ }
+
+ if (ali_reset_5455(card) <= 0) {
+ unregister_sound_dsp(card->dev_audio);
+ release_region(card->iobase, 256);
+ free_irq(card->irq, card);
+ kfree(card);
+ return -ENODEV;
+ }
+
+ /* initialize AC97 codec and register /dev/mixer */
+ if (ali_ac97_init(card) < 0) {
+ release_region(card->iobase, 256);
+ free_irq(card->irq, card);
+ kfree(card);
+ return -ENODEV;
+ }
+
+ pci_set_drvdata(pci_dev, card);
+
+ if (clocking == 0) {
+ clocking = 48000;
+ ali_configure_clocking();
+ }
+
+ /* register /dev/dsp */
+ if ((card->dev_audio = register_sound_dsp(&ali_audio_fops, -1)) < 0) {
+ int i;
+ printk(KERN_ERR"ali_audio: couldn't register DSP device!\n");
+ release_region(card->iobase, 256);
+ free_irq(card->irq, card);
+ for (i = 0; i < NR_AC97; i++)
+ if (card->ac97_codec[i] != NULL) {
+ unregister_sound_mixer(card->ac97_codec[i]->dev_mixer);
+ kfree(card->ac97_codec[i]);
+ }
+ kfree(card);
+ return -ENODEV;
+ }
+ card->initializing = 0;
+ return 0;
+}
+
+static void __devexit ali_remove(struct pci_dev *pci_dev)
+{
+ int i;
+ struct ali_card *card = pci_get_drvdata(pci_dev);
+ /* free hardware resources */
+ free_irq(card->irq, devs);
+ release_region(card->iobase, 256);
+ /* unregister audio devices */
+ for (i = 0; i < NR_AC97; i++)
+ if (card->ac97_codec[i] != NULL) {
+ unregister_sound_mixer(card->ac97_codec[i]->
+ dev_mixer);
+ ac97_release_codec(card->ac97_codec[i]);
+ card->ac97_codec[i] = NULL;
+ }
+ unregister_sound_dsp(card->dev_audio);
+ kfree(card);
+}
+
+#ifdef CONFIG_PM
+static int ali_pm_suspend(struct pci_dev *dev, u32 pm_state)
+{
+ struct ali_card *card = pci_get_drvdata(dev);
+ struct ali_state *state;
+ unsigned long flags;
+ struct dmabuf *dmabuf;
+ int i, num_ac97;
+
+ if (!card)
+ return 0;
+ spin_lock_irqsave(&card->lock, flags);
+ card->pm_suspended = 1;
+ for (i = 0; i < NR_HW_CH; i++) {
+ state = card->states[i];
+ if (!state)
+ continue;
+ /* this happens only if there are open files */
+ dmabuf = &state->dmabuf;
+ if (dmabuf->enable & DAC_RUNNING ||
+ (dmabuf->count
+ && (dmabuf->trigger & PCM_ENABLE_OUTPUT))) {
+ state->pm_saved_dac_rate = dmabuf->rate;
+ stop_dac(state);
+ } else {
+ state->pm_saved_dac_rate = 0;
+ }
+ if (dmabuf->enable & ADC_RUNNING) {
+ state->pm_saved_adc_rate = dmabuf->rate;
+ stop_adc(state);
+ } else {
+ state->pm_saved_adc_rate = 0;
+ }
+ dmabuf->ready = 0;
+ dmabuf->swptr = dmabuf->hwptr = 0;
+ dmabuf->count = dmabuf->total_bytes = 0;
+ }
+
+ spin_unlock_irqrestore(&card->lock, flags);
+ /* save mixer settings */
+ for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++) {
+ struct ac97_codec *codec = card->ac97_codec[num_ac97];
+ if (!codec)
+ continue;
+ for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
+ if ((supported_mixer(codec, i)) && (codec->read_mixer)) {
+ card->pm_saved_mixer_settings[i][num_ac97] = codec->read_mixer(codec, i);
+ }
+ }
+ }
+ pci_save_state(dev, card->pm_save_state); /* XXX do we need this? */
+ pci_disable_device(dev); /* disable busmastering */
+ pci_set_power_state(dev, 3); /* Zzz. */
+ return 0;
+}
+
+
+static int ali_pm_resume(struct pci_dev *dev)
+{
+ int num_ac97, i = 0;
+ struct ali_card *card = pci_get_drvdata(dev);
+ pci_enable_device(dev);
+ pci_restore_state(dev, card->pm_save_state);
+ /* observation of a toshiba portege 3440ct suggests that the
+ hardware has to be more or less completely reinitialized from
+ scratch after an apm suspend. Works For Me. -dan */
+ ali_ac97_random_init_stuff(card);
+ for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++) {
+ struct ac97_codec *codec = card->ac97_codec[num_ac97];
+ /* check they haven't stolen the hardware while we were
+ away */
+ if (!codec || !ali_ac97_exists(card, num_ac97)) {
+ if (num_ac97)
+ continue;
+ else
+ BUG();
+ }
+ if (!ali_ac97_probe_and_powerup(card, codec))
+ BUG();
+ if ((card->ac97_features & 0x0001)) {
+ /* at probe time we found we could do variable
+ rates, but APM suspend has made it forget
+ its magical powers */
+ if (!ali_ac97_enable_variable_rate(codec))
+ BUG();
+ }
+ /* we lost our mixer settings, so restore them */
+ for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
+ if (supported_mixer(codec, i)) {
+ int val = card->pm_saved_mixer_settings[i][num_ac97];
+ codec->mixer_state[i] = val;
+ codec->write_mixer(codec, i,
+ (val & 0xff),
+ ((val >> 8) & 0xff));
+ }
+ }
+ }
+
+ /* we need to restore the sample rate from whatever it was */
+ for (i = 0; i < NR_HW_CH; i++) {
+ struct ali_state *state = card->states[i];
+ if (state) {
+ if (state->pm_saved_adc_rate)
+ ali_set_adc_rate(state, state->pm_saved_adc_rate);
+ if (state->pm_saved_dac_rate)
+ ali_set_dac_rate(state, state->pm_saved_dac_rate);
+ }
+ }
+
+ card->pm_suspended = 0;
+ /* any processes that were reading/writing during the suspend
+ probably ended up here */
+ for (i = 0; i < NR_HW_CH; i++) {
+ struct ali_state *state = card->states[i];
+ if (state)
+ wake_up(&state->dmabuf.wait);
+ }
+ return 0;
+}
+#endif /* CONFIG_PM */
+
+MODULE_AUTHOR("");
+MODULE_DESCRIPTION("ALI 5455 audio support");
+MODULE_LICENSE("GPL");
+MODULE_PARM(clocking, "i");
+MODULE_PARM(strict_clocking, "i");
+MODULE_PARM(codec_pcmout_share_spdif_locked, "i");
+MODULE_PARM(codec_independent_spdif_locked, "i");
+MODULE_PARM(controller_pcmout_share_spdif_locked, "i");
+MODULE_PARM(controller_independent_spdif_locked, "i");
+#define ALI5455_MODULE_NAME "ali5455"
+static struct pci_driver ali_pci_driver = {
+ name:ALI5455_MODULE_NAME, id_table:ali_pci_tbl, probe:ali_probe,
+ remove:__devexit_p(ali_remove),
+#ifdef CONFIG_PM
+ suspend:ali_pm_suspend, resume:ali_pm_resume,
+#endif /* CONFIG_PM */
+};
+
+static int __init ali_init_module(void)
+{
+ printk(KERN_INFO "ALI 5455 + AC97 Audio, version "
+ DRIVER_VERSION ", " __TIME__ " " __DATE__ "\n");
+
+ if (codec_independent_spdif_locked > 0) {
+ if (codec_independent_spdif_locked == 32000
+ || codec_independent_spdif_locked == 44100
+ || codec_independent_spdif_locked == 48000) {
+ printk(KERN_INFO "ali_audio: Enabling S/PDIF at sample rate %dHz.\n", codec_independent_spdif_locked);
+ } else {
+ printk(KERN_INFO "ali_audio: S/PDIF can only be locked to 32000, 44100, or 48000Hz.\n");
+ codec_independent_spdif_locked = 0;
+ }
+ }
+ if (controller_independent_spdif_locked > 0) {
+ if (controller_independent_spdif_locked == 32000
+ || controller_independent_spdif_locked == 44100
+ || controller_independent_spdif_locked == 48000) {
+ printk(KERN_INFO "ali_audio: Enabling S/PDIF at sample rate %dHz.\n", controller_independent_spdif_locked);
+ } else {
+ printk(KERN_INFO "ali_audio: S/PDIF can only be locked to 32000, 44100, or 48000Hz.\n");
+ controller_independent_spdif_locked = 0;
+ }
+ }
+
+ if (codec_pcmout_share_spdif_locked > 0) {
+ if (codec_pcmout_share_spdif_locked == 32000
+ || codec_pcmout_share_spdif_locked == 44100
+ || codec_pcmout_share_spdif_locked == 48000) {
+ printk(KERN_INFO "ali_audio: Enabling S/PDIF at sample rate %dHz.\n", codec_pcmout_share_spdif_locked);
+ } else {
+ printk(KERN_INFO "ali_audio: S/PDIF can only be locked to 32000, 44100, or 48000Hz.\n");
+ codec_pcmout_share_spdif_locked = 0;
+ }
+ }
+ if (controller_pcmout_share_spdif_locked > 0) {
+ if (controller_pcmout_share_spdif_locked == 32000
+ || controller_pcmout_share_spdif_locked == 44100
+ || controller_pcmout_share_spdif_locked == 48000) {
+ printk(KERN_INFO "ali_audio: Enabling controller S/PDIF at sample rate %dHz.\n", controller_pcmout_share_spdif_locked);
+ } else {
+ printk(KERN_INFO "ali_audio: S/PDIF can only be locked to 32000, 44100, or 48000Hz.\n");
+ controller_pcmout_share_spdif_locked = 0;
+ }
+ }
+ if (!pci_register_driver(&ali_pci_driver)) {
+ pci_unregister_driver(&ali_pci_driver);
+ return -ENODEV;
+ }
+ return 0;
+}
+
+static void __exit ali_cleanup_module(void)
+{
+ pci_unregister_driver(&ali_pci_driver);
+}
+
+module_init(ali_init_module);
+module_exit(ali_cleanup_module);
+/*
+Local Variables:
+c-basic-offset: 8
+End:
+*/
projects / history.git / commitdiff