/* * forte.c - ForteMedia FM801 OSS Driver * * Written by Martin K. Petersen <mkp@mkp.net> * Copyright (C) 2002 Hewlett-Packard Company * Portions Copyright (C) 2003 Martin K. Petersen * * Latest version: http://mkp.net/forte/ * * Based upon the ALSA FM801 driver by Jaroslav Kysela and OSS drivers * by Thomas Sailer, Alan Cox, Zach Brown, and Jeff Garzik. Thanks * guys! * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License version * 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 * USA * */ #include <linux/config.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/spinlock.h> #include <linux/pci.h> #include <linux/delay.h> #include <linux/poll.h> #include <linux/sound.h> #include <linux/ac97_codec.h> #include <linux/interrupt.h> #include <linux/proc_fs.h> #include <linux/mutex.h> #include <asm/uaccess.h> #include <asm/io.h> #define DRIVER_NAME "forte" #define DRIVER_VERSION "$Id: forte.c,v 1.63 2003/03/01 05:32:42 mkp Exp $" #define PFX DRIVER_NAME ": " #undef M_DEBUG #ifdef M_DEBUG #define DPRINTK(args...) printk(KERN_WARNING args) #else #define DPRINTK(args...) #endif /* Card capabilities */ #define FORTE_CAPS (DSP_CAP_MMAP | DSP_CAP_TRIGGER) /* Supported audio formats */ #define FORTE_FMTS (AFMT_U8 | AFMT_S16_LE) /* Buffers */ #define FORTE_MIN_FRAG_SIZE 256 #define FORTE_MAX_FRAG_SIZE PAGE_SIZE #define FORTE_DEF_FRAG_SIZE 256 #define FORTE_MIN_FRAGMENTS 2 #define FORTE_MAX_FRAGMENTS 256 #define FORTE_DEF_FRAGMENTS 2 #define FORTE_MIN_BUF_MSECS 500 #define FORTE_MAX_BUF_MSECS 1000 /* PCI BARs */ #define FORTE_PCM_VOL 0x00 /* PCM Output Volume */ #define FORTE_FM_VOL 0x02 /* FM Output Volume */ #define FORTE_I2S_VOL 0x04 /* I2S Volume */ #define FORTE_REC_SRC 0x06 /* Record Source */ #define FORTE_PLY_CTRL 0x08 /* Playback Control */ #define FORTE_PLY_COUNT 0x0a /* Playback Count */ #define FORTE_PLY_BUF1 0x0c /* Playback Buffer I */ #define FORTE_PLY_BUF2 0x10 /* Playback Buffer II */ #define FORTE_CAP_CTRL 0x14 /* Capture Control */ #define FORTE_CAP_COUNT 0x16 /* Capture Count */ #define FORTE_CAP_BUF1 0x18 /* Capture Buffer I */ #define FORTE_CAP_BUF2 0x1c /* Capture Buffer II */ #define FORTE_CODEC_CTRL 0x22 /* Codec Control */ #define FORTE_I2S_MODE 0x24 /* I2S Mode Control */ #define FORTE_VOLUME 0x26 /* Volume Up/Down/Mute Status */ #define FORTE_I2C_CTRL 0x29 /* I2C Control */ #define FORTE_AC97_CMD 0x2a /* AC'97 Command */ #define FORTE_AC97_DATA 0x2c /* AC'97 Data */ #define FORTE_MPU401_DATA 0x30 /* MPU401 Data */ #define FORTE_MPU401_CMD 0x31 /* MPU401 Command */ #define FORTE_GPIO_CTRL 0x52 /* General Purpose I/O Control */ #define FORTE_GEN_CTRL 0x54 /* General Control */ #define FORTE_IRQ_MASK 0x56 /* Interrupt Mask */ #define FORTE_IRQ_STATUS 0x5a /* Interrupt Status */ #define FORTE_OPL3_BANK0 0x68 /* OPL3 Status Read / Bank 0 Write */ #define FORTE_OPL3_DATA0 0x69 /* OPL3 Data 0 Write */ #define FORTE_OPL3_BANK1 0x6a /* OPL3 Bank 1 Write */ #define FORTE_OPL3_DATA1 0x6b /* OPL3 Bank 1 Write */ #define FORTE_POWERDOWN 0x70 /* Blocks Power Down Control */ #define FORTE_CAP_OFFSET FORTE_CAP_CTRL - FORTE_PLY_CTRL #define FORTE_AC97_ADDR_SHIFT 10 /* Playback and record control register bits */ #define FORTE_BUF1_LAST (1<<1) #define FORTE_BUF2_LAST (1<<2) #define FORTE_START (1<<5) #define FORTE_PAUSE (1<<6) #define FORTE_IMMED_STOP (1<<7) #define FORTE_RATE_SHIFT 8 #define FORTE_RATE_MASK (15 << FORTE_RATE_SHIFT) #define FORTE_CHANNELS_4 (1<<12) /* Playback only */ #define FORTE_CHANNELS_6 (2<<12) /* Playback only */ #define FORTE_CHANNELS_6MS (3<<12) /* Playback only */ #define FORTE_CHANNELS_MASK (3<<12) #define FORTE_16BIT (1<<14) #define FORTE_STEREO (1<<15) /* IRQ status bits */ #define FORTE_IRQ_PLAYBACK (1<<8) #define FORTE_IRQ_CAPTURE (1<<9) #define FORTE_IRQ_VOLUME (1<<14) #define FORTE_IRQ_MPU (1<<15) /* CODEC control */ #define FORTE_CC_CODEC_RESET (1<<5) #define FORTE_CC_AC97_RESET (1<<6) /* AC97 cmd */ #define FORTE_AC97_WRITE (0<<7) #define FORTE_AC97_READ (1<<7) #define FORTE_AC97_DP_INVALID (0<<8) #define FORTE_AC97_DP_VALID (1<<8) #define FORTE_AC97_PORT_RDY (0<<9) #define FORTE_AC97_PORT_BSY (1<<9) struct forte_channel { const char *name; unsigned short ctrl; /* Ctrl BAR contents */ unsigned long iobase; /* Ctrl BAR address */ wait_queue_head_t wait; void *buf; /* Buffer */ dma_addr_t buf_handle; /* Buffer handle */ unsigned int record; unsigned int format; unsigned int rate; unsigned int stereo; unsigned int frag_sz; /* Current fragment size */ unsigned int frag_num; /* Current # of fragments */ unsigned int frag_msecs; /* Milliseconds per frag */ unsigned int buf_sz; /* Current buffer size */ unsigned int hwptr; /* Tail */ unsigned int swptr; /* Head */ unsigned int filled_frags; /* Fragments currently full */ unsigned int next_buf; /* Index of next buffer */ unsigned int active; /* Channel currently in use */ unsigned int mapped; /* mmap */ unsigned int buf_pages; /* Real size of buffer */ unsigned int nr_irqs; /* Number of interrupts */ unsigned int bytes; /* Total bytes */ unsigned int residue; /* Partial fragment */ }; struct forte_chip { struct pci_dev *pci_dev; unsigned long iobase; int irq; struct mutex open_mutex; /* Device access */ spinlock_t lock; /* State */ spinlock_t ac97_lock; struct ac97_codec *ac97; int multichannel; int dsp; /* OSS handle */ int trigger; /* mmap I/O trigger */ struct forte_channel play; struct forte_channel rec; }; static int channels[] = { 2, 4, 6, }; static int rates[] = { 5500, 8000, 9600, 11025, 16000, 19200, 22050, 32000, 38400, 44100, 48000, }; static struct forte_chip *forte; static int found; /* AC97 Codec -------------------------------------------------------------- */ /** * forte_ac97_wait: * @chip: fm801 instance whose AC97 codec to wait on * * FIXME: * Stop busy-waiting */ static inline int forte_ac97_wait (struct forte_chip *chip) { int i = 10000; while ( (inw (chip->iobase + FORTE_AC97_CMD) & FORTE_AC97_PORT_BSY) && i-- ) cpu_relax(); return i == 0; } /** * forte_ac97_read: * @codec: AC97 codec to read from * @reg: register to read */ static u16 forte_ac97_read (struct ac97_codec *codec, u8 reg) { u16 ret = 0; struct forte_chip *chip = codec->private_data; spin_lock (&chip->ac97_lock); /* Knock, knock */ if (forte_ac97_wait (chip)) { printk (KERN_ERR PFX "ac97_read: Serial bus busy\n"); goto out; } /* Send read command */ outw (reg | (1<<7), chip->iobase + FORTE_AC97_CMD); if (forte_ac97_wait (chip)) { printk (KERN_ERR PFX "ac97_read: Bus busy reading reg 0x%x\n", reg); goto out; } /* Sanity checking */ if (inw (chip->iobase + FORTE_AC97_CMD) & FORTE_AC97_DP_INVALID) { printk (KERN_ERR PFX "ac97_read: Invalid data port"); goto out; } /* Fetch result */ ret = inw (chip->iobase + FORTE_AC97_DATA); out: spin_unlock (&chip->ac97_lock); return ret; } /** * forte_ac97_write: * @codec: AC97 codec to send command to * @reg: register to write * @val: value to write */ static void forte_ac97_write (struct ac97_codec *codec, u8 reg, u16 val) { struct forte_chip *chip = codec->private_data; spin_lock (&chip->ac97_lock); /* Knock, knock */ if (forte_ac97_wait (chip)) { printk (KERN_ERR PFX "ac97_write: Serial bus busy\n"); goto out; } outw (val, chip->iobase + FORTE_AC97_DATA); outb (reg | FORTE_AC97_WRITE, chip->iobase + FORTE_AC97_CMD); /* Wait for completion */ if (forte_ac97_wait (chip)) { printk (KERN_ERR PFX "ac97_write: Bus busy after write\n"); goto out; } out: spin_unlock (&chip->ac97_lock); } /* Mixer ------------------------------------------------------------------- */ /** * forte_mixer_open: * @inode: * @file: */ static int forte_mixer_open (struct inode *inode, struct file *file) { struct forte_chip *chip = forte; file->private_data = chip->ac97; return 0; } /** * forte_mixer_release: * @inode: * @file: */ static int forte_mixer_release (struct inode *inode, struct file *file) { /* We will welease Wodewick */ return 0; } /** * forte_mixer_ioctl: * @inode: * @file: */ static int forte_mixer_ioctl (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 struct file_operations forte_mixer_fops = { .owner = THIS_MODULE, .llseek = no_llseek, .ioctl = forte_mixer_ioctl, .open = forte_mixer_open, .release = forte_mixer_release, }; /* Channel ----------------------------------------------------------------- */ /** * forte_channel_reset: * @channel: Channel to reset * * Locking: Must be called with lock held. */ static void forte_channel_reset (struct forte_channel *channel) { if (!channel || !channel->iobase) return; DPRINTK ("%s: channel = %s\n", __FUNCTION__, channel->name); channel->ctrl &= ~FORTE_START; outw (channel->ctrl, channel->iobase + FORTE_PLY_CTRL); /* We always play at least two fragments, hence these defaults */ channel->hwptr = channel->frag_sz; channel->next_buf = 1; channel->swptr = 0; channel->filled_frags = 0; channel->active = 0; channel->bytes = 0; channel->nr_irqs = 0; channel->mapped = 0; channel->residue = 0; } /** * forte_channel_start: * @channel: Channel to start (record/playback) * * Locking: Must be called with lock held. */ static void inline forte_channel_start (struct forte_channel *channel) { if (!channel || !channel->iobase || channel->active) return; channel->ctrl &= ~(FORTE_PAUSE | FORTE_BUF1_LAST | FORTE_BUF2_LAST | FORTE_IMMED_STOP); channel->ctrl |= FORTE_START; channel->active = 1; outw (channel->ctrl, channel->iobase + FORTE_PLY_CTRL); } /** * forte_channel_stop: * @channel: Channel to stop * * Locking: Must be called with lock held. */ static void inline forte_channel_stop (struct forte_channel *channel) { if (!channel || !channel->iobase) return; channel->ctrl &= ~(FORTE_START | FORTE_PAUSE); channel->ctrl |= FORTE_IMMED_STOP; channel->active = 0; outw (channel->ctrl, channel->iobase + FORTE_PLY_CTRL); } /** * forte_channel_pause: * @channel: Channel to pause * * Locking: Must be called with lock held. */ static void inline forte_channel_pause (struct forte_channel *channel) { if (!channel || !channel->iobase) return; channel->ctrl |= FORTE_PAUSE; channel->active = 0; outw (channel->ctrl, channel->iobase + FORTE_PLY_CTRL); } /** * forte_channel_rate: * @channel: Channel whose rate to set. Playback and record are * independent. * @rate: Channel rate in Hz * * Locking: Must be called with lock held. */ static int forte_channel_rate (struct forte_channel *channel, unsigned int rate) { int new_rate; if (!channel || !channel->iobase) return -EINVAL; /* The FM801 only supports a handful of fixed frequencies. * We find the value closest to what userland requested. */ if (rate <= 6250) { rate = 5500; new_rate = 0; } else if (rate <= 8800) { rate = 8000; new_rate = 1; } else if (rate <= 10312) { rate = 9600; new_rate = 2; } else if (rate <= 13512) { rate = 11025; new_rate = 3; } else if (rate <= 17600) { rate = 16000; new_rate = 4; } else if (rate <= 20625) { rate = 19200; new_rate = 5; } else if (rate <= 27025) { rate = 22050; new_rate = 6; } else if (rate <= 35200) { rate = 32000; new_rate = 7; } else if (rate <= 41250) { rate = 38400; new_rate = 8; } else if (rate <= 46050) { rate = 44100; new_rate = 9; } else { rate = 48000; new_rate = 10; } channel->ctrl &= ~FORTE_RATE_MASK; channel->ctrl |= new_rate << FORTE_RATE_SHIFT; channel->rate = rate; DPRINTK ("%s: %s rate = %d\n", __FUNCTION__, channel->name, rate); return rate; } /** * forte_channel_format: * @channel: Channel whose audio format to set * @format: OSS format ID * * Locking: Must be called with lock held. */ static int forte_channel_format (struct forte_channel *channel, int format) { if (!channel || !channel->iobase) return -EINVAL; switch (format) { case AFMT_QUERY: break; case AFMT_U8: channel->ctrl &= ~FORTE_16BIT; channel->format = AFMT_U8; break; case AFMT_S16_LE: default: channel->ctrl |= FORTE_16BIT; channel->format = AFMT_S16_LE; break; } DPRINTK ("%s: %s want %d format, got %d\n", __FUNCTION__, channel->name, format, channel->format); return channel->format; } /** * forte_channel_stereo: * @channel: Channel to toggle * @stereo: 0 for Mono, 1 for Stereo * * Locking: Must be called with lock held. */ static int forte_channel_stereo (struct forte_channel *channel, unsigned int stereo) { int ret; if (!channel || !channel->iobase) return -EINVAL; DPRINTK ("%s: %s stereo = %d\n", __FUNCTION__, channel->name, stereo); switch (stereo) { case 0: channel->ctrl &= ~(FORTE_STEREO | FORTE_CHANNELS_MASK); channel-> stereo = stereo; ret = stereo; break; case 1: channel->ctrl &= ~FORTE_CHANNELS_MASK; channel->ctrl |= FORTE_STEREO; channel-> stereo = stereo; ret = stereo; break; default: DPRINTK ("Unsupported channel format"); ret = -EINVAL; break; } return ret; } /** * forte_channel_buffer: * @channel: Channel whose buffer to set up * * Locking: Must be called with lock held. */ static void forte_channel_buffer (struct forte_channel *channel, int sz, int num) { unsigned int msecs, shift; /* Go away, I'm busy */ if (channel->filled_frags || channel->bytes) return; /* Fragment size must be a power of 2 */ shift = 0; sz++; while (sz >>= 1) shift++; channel->frag_sz = 1 << shift; /* Round fragment size to something reasonable */ if (channel->frag_sz < FORTE_MIN_FRAG_SIZE) channel->frag_sz = FORTE_MIN_FRAG_SIZE; if (channel->frag_sz > FORTE_MAX_FRAG_SIZE) channel->frag_sz = FORTE_MAX_FRAG_SIZE; /* Find fragment length in milliseconds */ msecs = channel->frag_sz / (channel->format == AFMT_S16_LE ? 2 : 1) / (channel->stereo ? 2 : 1) / (channel->rate / 1000); channel->frag_msecs = msecs; /* Pick a suitable number of fragments */ if (msecs * num < FORTE_MIN_BUF_MSECS) num = FORTE_MIN_BUF_MSECS / msecs; if (msecs * num > FORTE_MAX_BUF_MSECS) num = FORTE_MAX_BUF_MSECS / msecs; /* Fragment number must be a power of 2 */ shift = 0; while (num >>= 1) shift++; channel->frag_num = 1 << (shift + 1); /* Round fragment number to something reasonable */ if (channel->frag_num < FORTE_MIN_FRAGMENTS) channel->frag_num = FORTE_MIN_FRAGMENTS; if (channel->frag_num > FORTE_MAX_FRAGMENTS) channel->frag_num = FORTE_MAX_FRAGMENTS; channel->buf_sz = channel->frag_sz * channel->frag_num; DPRINTK ("%s: %s frag_sz = %d, frag_num = %d, buf_sz = %d\n", __FUNCTION__, channel->name, channel->frag_sz, channel->frag_num, channel->buf_sz); } /** * forte_channel_prep: * @channel: Channel whose buffer to prepare * * Locking: Lock held. */ static void forte_channel_prep (struct forte_channel *channel) { struct page *page; int i; if (channel->buf) return; forte_channel_buffer (channel, channel->frag_sz, channel->frag_num); channel->buf_pages = channel->buf_sz >> PAGE_SHIFT; if (channel->buf_sz % PAGE_SIZE) channel->buf_pages++; DPRINTK ("%s: %s frag_sz = %d, frag_num = %d, buf_sz = %d, pg = %d\n", __FUNCTION__, channel->name, channel->frag_sz, channel->frag_num, channel->buf_sz, channel->buf_pages); /* DMA buffer */ channel->buf = pci_alloc_consistent (forte->pci_dev, channel->buf_pages * PAGE_SIZE, &channel->buf_handle); if (!channel->buf || !channel->buf_handle) BUG(); page = virt_to_page (channel->buf); /* FIXME: can this go away ? */ for (i = 0 ; i < channel->buf_pages ; i++) SetPageReserved(page++); /* Prep buffer registers */ outw (channel->frag_sz - 1, channel->iobase + FORTE_PLY_COUNT); outl (channel->buf_handle, channel->iobase + FORTE_PLY_BUF1); outl (channel->buf_handle + channel->frag_sz, channel->iobase + FORTE_PLY_BUF2); /* Reset hwptr */ channel->hwptr = channel->frag_sz; channel->next_buf = 1; DPRINTK ("%s: %s buffer @ %p (%p)\n", __FUNCTION__, channel->name, channel->buf, channel->buf_handle); } /** * forte_channel_drain: * @chip: * @channel: * * Locking: Don't hold the lock. */ static inline int forte_channel_drain (struct forte_channel *channel) { DECLARE_WAITQUEUE (wait, current); unsigned long flags; DPRINTK ("%s\n", __FUNCTION__); if (channel->mapped) { spin_lock_irqsave (&forte->lock, flags); forte_channel_stop (channel); spin_unlock_irqrestore (&forte->lock, flags); return 0; } spin_lock_irqsave (&forte->lock, flags); add_wait_queue (&channel->wait, &wait); for (;;) { if (channel->active == 0 || channel->filled_frags == 1) break; spin_unlock_irqrestore (&forte->lock, flags); __set_current_state (TASK_INTERRUPTIBLE); schedule(); spin_lock_irqsave (&forte->lock, flags); } forte_channel_stop (channel); forte_channel_reset (channel); set_current_state (TASK_RUNNING); remove_wait_queue (&channel->wait, &wait); spin_unlock_irqrestore (&forte->lock, flags); return 0; } /** * forte_channel_init: * @chip: Forte chip instance the channel hangs off * @channel: Channel to initialize * * Description: * Initializes a channel, sets defaults, and allocates * buffers. * * Locking: No lock held. */ static int forte_channel_init (struct forte_chip *chip, struct forte_channel *channel) { DPRINTK ("%s: chip iobase @ %p\n", __FUNCTION__, (void *)chip->iobase); spin_lock_irq (&chip->lock); memset (channel, 0x0, sizeof (*channel)); if (channel == &chip->play) { channel->name = "PCM_OUT"; channel->iobase = chip->iobase; DPRINTK ("%s: PCM-OUT iobase @ %p\n", __FUNCTION__, (void *) channel->iobase); } else if (channel == &chip->rec) { channel->name = "PCM_IN"; channel->iobase = chip->iobase + FORTE_CAP_OFFSET; channel->record = 1; DPRINTK ("%s: PCM-IN iobase @ %p\n", __FUNCTION__, (void *) channel->iobase); } else BUG(); init_waitqueue_head (&channel->wait); /* Defaults: 48kHz, 16-bit, stereo */ channel->ctrl = inw (channel->iobase + FORTE_PLY_CTRL); forte_channel_reset (channel); forte_channel_stereo (channel, 1); forte_channel_format (channel, AFMT_S16_LE); forte_channel_rate (channel, 48000); channel->frag_sz = FORTE_DEF_FRAG_SIZE; channel->frag_num = FORTE_DEF_FRAGMENTS; chip->trigger = 0; spin_unlock_irq (&chip->lock); return 0; } /** * forte_channel_free: * @chip: Chip this channel hangs off * @channel: Channel to nuke * * Description: * Resets channel and frees buffers. * * Locking: Hold your horses. */ static void forte_channel_free (struct forte_chip *chip, struct forte_channel *channel) { DPRINTK ("%s: %s\n", __FUNCTION__, channel->name); if (!channel->buf_handle) return; pci_free_consistent (chip->pci_dev, channel->buf_pages * PAGE_SIZE, channel->buf, channel->buf_handle); memset (channel, 0x0, sizeof (*channel)); } /* DSP --------------------------------------------------------------------- */ /** * forte_dsp_ioctl: */ static int forte_dsp_ioctl (struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { int ival=0, ret, rval=0, rd, wr, count; struct forte_chip *chip; struct audio_buf_info abi; struct count_info cinfo; void __user *argp = (void __user *)arg; int __user *p = argp; chip = file->private_data; if (file->f_mode & FMODE_WRITE) wr = 1; else wr = 0; if (file->f_mode & FMODE_READ) rd = 1; else rd = 0; switch (cmd) { case OSS_GETVERSION: return put_user (SOUND_VERSION, p); case SNDCTL_DSP_GETCAPS: DPRINTK ("%s: GETCAPS\n", __FUNCTION__); ival = FORTE_CAPS; /* DUPLEX */ return put_user (ival, p); case SNDCTL_DSP_GETFMTS: DPRINTK ("%s: GETFMTS\n", __FUNCTION__); ival = FORTE_FMTS; /* U8, 16LE */ return put_user (ival, p); case SNDCTL_DSP_SETFMT: /* U8, 16LE */ DPRINTK ("%s: SETFMT\n", __FUNCTION__); if (get_user (ival, p)) return -EFAULT; spin_lock_irq (&chip->lock); if (rd) { forte_channel_stop (&chip->rec); rval = forte_channel_format (&chip->rec, ival); } if (wr) { forte_channel_stop (&chip->rec); rval = forte_channel_format (&chip->play, ival); } spin_unlock_irq (&chip->lock); return put_user (rval, p); case SNDCTL_DSP_STEREO: /* 0 - mono, 1 - stereo */ DPRINTK ("%s: STEREO\n", __FUNCTION__); if (get_user (ival, p)) return -EFAULT; spin_lock_irq (&chip->lock); if (rd) { forte_channel_stop (&chip->rec); rval = forte_channel_stereo (&chip->rec, ival); } if (wr) { forte_channel_stop (&chip->rec); rval = forte_channel_stereo (&chip->play, ival); } spin_unlock_irq (&chip->lock); return put_user (rval, p); case SNDCTL_DSP_CHANNELS: /* 1 - mono, 2 - stereo */ DPRINTK ("%s: CHANNELS\n", __FUNCTION__); if (get_user (ival, p)) return -EFAULT; spin_lock_irq (&chip->lock); if (rd) { forte_channel_stop (&chip->rec); rval = forte_channel_stereo (&chip->rec, ival-1) + 1; } if (wr) { forte_channel_stop (&chip->play); rval = forte_channel_stereo (&chip->play, ival-1) + 1; } spin_unlock_irq (&chip->lock); return put_user (rval, p); case SNDCTL_DSP_SPEED: DPRINTK ("%s: SPEED\n", __FUNCTION__); if (get_user (ival, p)) return -EFAULT; spin_lock_irq (&chip->lock); if (rd) { forte_channel_stop (&chip->rec); rval = forte_channel_rate (&chip->rec, ival); } if (wr) { forte_channel_stop (&chip->play); rval = forte_channel_rate (&chip->play, ival); } spin_unlock_irq (&chip->lock); return put_user(rval, p); case SNDCTL_DSP_GETBLKSIZE: DPRINTK ("%s: GETBLKSIZE\n", __FUNCTION__); spin_lock_irq (&chip->lock); if (rd) ival = chip->rec.frag_sz; if (wr) ival = chip->play.frag_sz; spin_unlock_irq (&chip->lock); return put_user (ival, p); case SNDCTL_DSP_RESET: DPRINTK ("%s: RESET\n", __FUNCTION__); spin_lock_irq (&chip->lock); if (rd) forte_channel_reset (&chip->rec); if (wr) forte_channel_reset (&chip->play); spin_unlock_irq (&chip->lock); return 0; case SNDCTL_DSP_SYNC: DPRINTK ("%s: SYNC\n", __FUNCTION__); if (wr) ret = forte_channel_drain (&chip->play); return 0; case SNDCTL_DSP_POST: DPRINTK ("%s: POST\n", __FUNCTION__); if (wr) { spin_lock_irq (&chip->lock); if (chip->play.filled_frags) forte_channel_start (&chip->play); spin_unlock_irq (&chip->lock); } return 0; case SNDCTL_DSP_SETFRAGMENT: DPRINTK ("%s: SETFRAGMENT\n", __FUNCTION__); if (get_user (ival, p)) return -EFAULT; spin_lock_irq (&chip->lock); if (rd) { forte_channel_buffer (&chip->rec, ival & 0xffff, (ival >> 16) & 0xffff); ival = (chip->rec.frag_num << 16) + chip->rec.frag_sz; } if (wr) { forte_channel_buffer (&chip->play, ival & 0xffff, (ival >> 16) & 0xffff); ival = (chip->play.frag_num << 16) +chip->play.frag_sz; } spin_unlock_irq (&chip->lock); return put_user (ival, p); case SNDCTL_DSP_GETISPACE: DPRINTK ("%s: GETISPACE\n", __FUNCTION__); if (!rd) return -EINVAL; spin_lock_irq (&chip->lock); abi.fragstotal = chip->rec.frag_num; abi.fragsize = chip->rec.frag_sz; if (chip->rec.mapped) { abi.fragments = chip->rec.frag_num - 2; abi.bytes = abi.fragments * abi.fragsize; } else { abi.fragments = chip->rec.filled_frags; abi.bytes = abi.fragments * abi.fragsize; } spin_unlock_irq (&chip->lock); return copy_to_user (argp, &abi, sizeof (abi)) ? -EFAULT : 0; case SNDCTL_DSP_GETIPTR: DPRINTK ("%s: GETIPTR\n", __FUNCTION__); if (!rd) return -EINVAL; spin_lock_irq (&chip->lock); if (chip->rec.active) cinfo.ptr = chip->rec.hwptr; else cinfo.ptr = 0; cinfo.bytes = chip->rec.bytes; cinfo.blocks = chip->rec.nr_irqs; chip->rec.nr_irqs = 0; spin_unlock_irq (&chip->lock); return copy_to_user (argp, &cinfo, sizeof (cinfo)) ? -EFAULT : 0; case SNDCTL_DSP_GETOSPACE: if (!wr) return -EINVAL; spin_lock_irq (&chip->lock); abi.fragstotal = chip->play.frag_num; abi.fragsize = chip->play.frag_sz; if (chip->play.mapped) { abi.fragments = chip->play.frag_num - 2; abi.bytes = chip->play.buf_sz; } else { abi.fragments = chip->play.frag_num - chip->play.filled_frags; if (chip->play.residue) abi.fragments--; abi.bytes = abi.fragments * abi.fragsize + chip->play.residue; } spin_unlock_irq (&chip->lock); return copy_to_user (argp, &abi, sizeof (abi)) ? -EFAULT : 0; case SNDCTL_DSP_GETOPTR: if (!wr) return -EINVAL; spin_lock_irq (&chip->lock); if (chip->play.active) cinfo.ptr = chip->play.hwptr; else cinfo.ptr = 0; cinfo.bytes = chip->play.bytes; cinfo.blocks = chip->play.nr_irqs; chip->play.nr_irqs = 0; spin_unlock_irq (&chip->lock); return copy_to_user (argp, &cinfo, sizeof (cinfo)) ? -EFAULT : 0; case SNDCTL_DSP_GETODELAY: if (!wr) return -EINVAL; spin_lock_irq (&chip->lock); if (!chip->play.active) { ival = 0; } else if (chip->play.mapped) { count = inw (chip->play.iobase + FORTE_PLY_COUNT) + 1; ival = chip->play.frag_sz - count; } else { ival = chip->play.filled_frags * chip->play.frag_sz; if (chip->play.residue) ival += chip->play.frag_sz - chip->play.residue; } spin_unlock_irq (&chip->lock); return put_user (ival, p); case SNDCTL_DSP_SETDUPLEX: DPRINTK ("%s: SETDUPLEX\n", __FUNCTION__); return -EINVAL; case SNDCTL_DSP_GETTRIGGER: DPRINTK ("%s: GETTRIGGER\n", __FUNCTION__); return put_user (chip->trigger, p); case SNDCTL_DSP_SETTRIGGER: if (get_user (ival, p)) return -EFAULT; DPRINTK ("%s: SETTRIGGER %d\n", __FUNCTION__, ival); if (wr) { spin_lock_irq (&chip->lock); if (ival & PCM_ENABLE_OUTPUT) forte_channel_start (&chip->play); else { chip->trigger = 1; forte_channel_prep (&chip->play); forte_channel_stop (&chip->play); } spin_unlock_irq (&chip->lock); } else if (rd) { spin_lock_irq (&chip->lock); if (ival & PCM_ENABLE_INPUT) forte_channel_start (&chip->rec); else { chip->trigger = 1; forte_channel_prep (&chip->rec); forte_channel_stop (&chip->rec); } spin_unlock_irq (&chip->lock); } return 0; case SOUND_PCM_READ_RATE: DPRINTK ("%s: PCM_READ_RATE\n", __FUNCTION__); return put_user (chip->play.rate, p); case SOUND_PCM_READ_CHANNELS: DPRINTK ("%s: PCM_READ_CHANNELS\n", __FUNCTION__); return put_user (chip->play.stereo, p); case SOUND_PCM_READ_BITS: DPRINTK ("%s: PCM_READ_BITS\n", __FUNCTION__); return put_user (chip->play.format, p); case SNDCTL_DSP_NONBLOCK: DPRINTK ("%s: DSP_NONBLOCK\n", __FUNCTION__); file->f_flags |= O_NONBLOCK; return 0; default: DPRINTK ("Unsupported ioctl: %x (%p)\n", cmd, argp); break; } return -EINVAL; } /** * forte_dsp_open: */ static int forte_dsp_open (struct inode *inode, struct file *file) { struct forte_chip *chip = forte; /* FIXME: HACK FROM HELL! */ if (file->f_flags & O_NONBLOCK) { if (!mutex_trylock(&chip->open_mutex)) { DPRINTK ("%s: returning -EAGAIN\n", __FUNCTION__); return -EAGAIN; } } else { if (mutex_lock_interruptible(&chip->open_mutex)) { DPRINTK ("%s: returning -ERESTARTSYS\n", __FUNCTION__); return -ERESTARTSYS; } } file->private_data = forte; DPRINTK ("%s: dsp opened by %d\n", __FUNCTION__, current->pid); if (file->f_mode & FMODE_WRITE) forte_channel_init (forte, &forte->play); if (file->f_mode & FMODE_READ) forte_channel_init (forte, &forte->rec); return nonseekable_open(inode, file); } /** * forte_dsp_release: */ static int forte_dsp_release (struct inode *inode, struct file *file) { struct forte_chip *chip = file->private_data; int ret = 0; DPRINTK ("%s: chip @ %p\n", __FUNCTION__, chip); if (file->f_mode & FMODE_WRITE) { forte_channel_drain (&chip->play); spin_lock_irq (&chip->lock); forte_channel_free (chip, &chip->play); spin_unlock_irq (&chip->lock); } if (file->f_mode & FMODE_READ) { while (chip->rec.filled_frags > 0) interruptible_sleep_on (&chip->rec.wait); spin_lock_irq (&chip->lock); forte_channel_stop (&chip->rec); forte_channel_free (chip, &chip->rec); spin_unlock_irq (&chip->lock); } mutex_unlock(&chip->open_mutex); return ret; } /** * forte_dsp_poll: * */ static unsigned int forte_dsp_poll (struct file *file, struct poll_table_struct *wait) { struct forte_chip *chip; struct forte_channel *channel; unsigned int mask = 0; chip = file->private_data; if (file->f_mode & FMODE_WRITE) { channel = &chip->play; if (channel->active) poll_wait (file, &channel->wait, wait); spin_lock_irq (&chip->lock); if (channel->frag_num - channel->filled_frags > 0) mask |= POLLOUT | POLLWRNORM; spin_unlock_irq (&chip->lock); } if (file->f_mode & FMODE_READ) { channel = &chip->rec; if (channel->active) poll_wait (file, &channel->wait, wait); spin_lock_irq (&chip->lock); if (channel->filled_frags > 0) mask |= POLLIN | POLLRDNORM; spin_unlock_irq (&chip->lock); } return mask; } /** * forte_dsp_mmap: */ static int forte_dsp_mmap (struct file *file, struct vm_area_struct *vma) { struct forte_chip *chip; struct forte_channel *channel; unsigned long size; int ret; chip = file->private_data; DPRINTK ("%s: start %lXh, size %ld, pgoff %ld\n", __FUNCTION__, vma->vm_start, vma->vm_end - vma->vm_start, vma->vm_pgoff); spin_lock_irq (&chip->lock); if (vma->vm_flags & VM_WRITE && chip->play.active) { ret = -EBUSY; goto out; } if (vma->vm_flags & VM_READ && chip->rec.active) { ret = -EBUSY; goto out; } if (file->f_mode & FMODE_WRITE) channel = &chip->play; else if (file->f_mode & FMODE_READ) channel = &chip->rec; else { ret = -EINVAL; goto out; } forte_channel_prep (channel); channel->mapped = 1; if (vma->vm_pgoff != 0) { ret = -EINVAL; goto out; } size = vma->vm_end - vma->vm_start; if (size > channel->buf_pages * PAGE_SIZE) { DPRINTK ("%s: size (%ld) > buf_sz (%d) \n", __FUNCTION__, size, channel->buf_sz); ret = -EINVAL; goto out; } if (remap_pfn_range(vma, vma->vm_start, virt_to_phys(channel->buf) >> PAGE_SHIFT, size, vma->vm_page_prot)) { DPRINTK ("%s: remap el a no worko\n", __FUNCTION__); ret = -EAGAIN; goto out; } ret = 0; out: spin_unlock_irq (&chip->lock); return ret; } /** * forte_dsp_write: */ static ssize_t forte_dsp_write (struct file *file, const char __user *buffer, size_t bytes, loff_t *ppos) { struct forte_chip *chip; struct forte_channel *channel; unsigned int i = bytes, sz = 0; unsigned long flags; if (!access_ok (VERIFY_READ, buffer, bytes)) return -EFAULT; chip = (struct forte_chip *) file->private_data; if (!chip) BUG(); channel = &chip->play; if (!channel) BUG(); spin_lock_irqsave (&chip->lock, flags); /* Set up buffers with the right fragment size */ forte_channel_prep (channel); while (i) { /* All fragment buffers in use -> wait */ if (channel->frag_num - channel->filled_frags == 0) { DECLARE_WAITQUEUE (wait, current); /* For trigger or non-blocking operation, get out */ if (chip->trigger || file->f_flags & O_NONBLOCK) { spin_unlock_irqrestore (&chip->lock, flags); return -EAGAIN; } /* Otherwise wait for buffers */ add_wait_queue (&channel->wait, &wait); for (;;) { spin_unlock_irqrestore (&chip->lock, flags); set_current_state (TASK_INTERRUPTIBLE); schedule(); spin_lock_irqsave (&chip->lock, flags); if (channel->frag_num - channel->filled_frags) break; } remove_wait_queue (&channel->wait, &wait); set_current_state (TASK_RUNNING); if (signal_pending (current)) { spin_unlock_irqrestore (&chip->lock, flags); return -ERESTARTSYS; } } if (channel->residue) sz = channel->residue; else if (i > channel->frag_sz) sz = channel->frag_sz; else sz = i; spin_unlock_irqrestore (&chip->lock, flags); if (copy_from_user ((void *) channel->buf + channel->swptr, buffer, sz)) return -EFAULT; spin_lock_irqsave (&chip->lock, flags); /* Advance software pointer */ buffer += sz; channel->swptr += sz; channel->swptr %= channel->buf_sz; i -= sz; /* Only bump filled_frags if a full fragment has been written */ if (channel->swptr % channel->frag_sz == 0) { channel->filled_frags++; channel->residue = 0; } else channel->residue = channel->frag_sz - sz; /* If playback isn't active, start it */ if (channel->active == 0 && chip->trigger == 0) forte_channel_start (channel); } spin_unlock_irqrestore (&chip->lock, flags); return bytes - i; } /** * forte_dsp_read: */ static ssize_t forte_dsp_read (struct file *file, char __user *buffer, size_t bytes, loff_t *ppos) { struct forte_chip *chip; struct forte_channel *channel; unsigned int i = bytes, sz; unsigned long flags; if (!access_ok (VERIFY_WRITE, buffer, bytes)) return -EFAULT; chip = (struct forte_chip *) file->private_data; if (!chip) BUG(); channel = &chip->rec; if (!channel) BUG(); spin_lock_irqsave (&chip->lock, flags); /* Set up buffers with the right fragment size */ forte_channel_prep (channel); /* Start recording */ if (!chip->trigger) forte_channel_start (channel); while (i) { /* No fragment buffers in use -> wait */ if (channel->filled_frags == 0) { DECLARE_WAITQUEUE (wait, current); /* For trigger mode operation, get out */ if (chip->trigger) { spin_unlock_irqrestore (&chip->lock, flags); return -EAGAIN; } add_wait_queue (&channel->wait, &wait); for (;;) { if (channel->active == 0) break; if (channel->filled_frags) break; spin_unlock_irqrestore (&chip->lock, flags); set_current_state (TASK_INTERRUPTIBLE); schedule(); spin_lock_irqsave (&chip->lock, flags); } set_current_state (TASK_RUNNING); remove_wait_queue (&channel->wait, &wait); } if (i > channel->frag_sz) sz = channel->frag_sz; else sz = i; spin_unlock_irqrestore (&chip->lock, flags); if (copy_to_user (buffer, (void *)channel->buf+channel->swptr, sz)) { DPRINTK ("%s: copy_to_user failed\n", __FUNCTION__); return -EFAULT; } spin_lock_irqsave (&chip->lock, flags); /* Advance software pointer */ buffer += sz; if (channel->filled_frags > 0) channel->filled_frags--; channel->swptr += channel->frag_sz; channel->swptr %= channel->buf_sz; i -= sz; } spin_unlock_irqrestore (&chip->lock, flags); return bytes - i; } static struct file_operations forte_dsp_fops = { .owner = THIS_MODULE, .llseek = &no_llseek, .read = &forte_dsp_read, .write = &forte_dsp_write, .poll = &forte_dsp_poll, .ioctl = &forte_dsp_ioctl, .open = &forte_dsp_open, .release = &forte_dsp_release, .mmap = &forte_dsp_mmap, }; /* Common ------------------------------------------------------------------ */ /** * forte_interrupt: */ static irqreturn_t forte_interrupt (int irq, void *dev_id, struct pt_regs *regs) { struct forte_chip *chip = dev_id; struct forte_channel *channel = NULL; u16 status, count; status = inw (chip->iobase + FORTE_IRQ_STATUS); /* If this is not for us, get outta here ASAP */ if ((status & (FORTE_IRQ_PLAYBACK | FORTE_IRQ_CAPTURE)) == 0) return IRQ_NONE; if (status & FORTE_IRQ_PLAYBACK) { channel = &chip->play; spin_lock (&chip->lock); if (channel->frag_sz == 0) goto pack; /* Declare a fragment done */ if (channel->filled_frags > 0) channel->filled_frags--; channel->bytes += channel->frag_sz; channel->nr_irqs++; /* Flip-flop between buffer I and II */ channel->next_buf ^= 1; /* Advance hardware pointer by fragment size and wrap around */ channel->hwptr += channel->frag_sz; channel->hwptr %= channel->buf_sz; /* Buffer I or buffer II BAR */ outl (channel->buf_handle + channel->hwptr, channel->next_buf == 0 ? channel->iobase + FORTE_PLY_BUF1 : channel->iobase + FORTE_PLY_BUF2); /* If the currently playing fragment is last, schedule pause */ if (channel->filled_frags == 1) forte_channel_pause (channel); pack: /* Acknowledge interrupt */ outw (FORTE_IRQ_PLAYBACK, chip->iobase + FORTE_IRQ_STATUS); if (waitqueue_active (&channel->wait)) wake_up_all (&channel->wait); spin_unlock (&chip->lock); } if (status & FORTE_IRQ_CAPTURE) { channel = &chip->rec; spin_lock (&chip->lock); /* One fragment filled */ channel->filled_frags++; /* Get # of completed bytes */ count = inw (channel->iobase + FORTE_PLY_COUNT) + 1; if (count == 0) { DPRINTK ("%s: last, filled_frags = %d\n", __FUNCTION__, channel->filled_frags); channel->filled_frags = 0; goto rack; } /* Buffer I or buffer II BAR */ outl (channel->buf_handle + channel->hwptr, channel->next_buf == 0 ? channel->iobase + FORTE_PLY_BUF1 : channel->iobase + FORTE_PLY_BUF2); /* Flip-flop between buffer I and II */ channel->next_buf ^= 1; /* Advance hardware pointer by fragment size and wrap around */ channel->hwptr += channel->frag_sz; channel->hwptr %= channel->buf_sz; /* Out of buffers */ if (channel->filled_frags == channel->frag_num - 1) forte_channel_stop (channel); rack: /* Acknowledge interrupt */ outw (FORTE_IRQ_CAPTURE, chip->iobase + FORTE_IRQ_STATUS); spin_unlock (&chip->lock); if (waitqueue_active (&channel->wait)) wake_up_all (&channel->wait); } return IRQ_HANDLED; } /** * forte_proc_read: */ static int forte_proc_read (char *page, char **start, off_t off, int count, int *eof, void *data) { int i = 0, p_rate, p_chan, r_rate; unsigned short p_reg, r_reg; i += sprintf (page, "ForteMedia FM801 OSS Lite driver\n%s\n \n", DRIVER_VERSION); if (!forte->iobase) return i; p_rate = p_chan = -1; p_reg = inw (forte->iobase + FORTE_PLY_CTRL); p_rate = (p_reg >> 8) & 15; p_chan = (p_reg >> 12) & 3; if (p_rate >= 0 || p_rate <= 10) p_rate = rates[p_rate]; if (p_chan >= 0 || p_chan <= 2) p_chan = channels[p_chan]; r_rate = -1; r_reg = inw (forte->iobase + FORTE_CAP_CTRL); r_rate = (r_reg >> 8) & 15; if (r_rate >= 0 || r_rate <= 10) r_rate = rates[r_rate]; i += sprintf (page + i, " Playback Capture\n" "FIFO empty : %-3s %-3s\n" "Buf1 Last : %-3s %-3s\n" "Buf2 Last : %-3s %-3s\n" "Started : %-3s %-3s\n" "Paused : %-3s %-3s\n" "Immed Stop : %-3s %-3s\n" "Rate : %-5d %-5d\n" "Channels : %-5d -\n" "16-bit : %-3s %-3s\n" "Stereo : %-3s %-3s\n" " \n" "Buffer Sz : %-6d %-6d\n" "Frag Sz : %-6d %-6d\n" "Frag Num : %-6d %-6d\n" "Frag msecs : %-6d %-6d\n" "Used Frags : %-6d %-6d\n" "Mapped : %-3s %-3s\n", p_reg & 1<<0 ? "yes" : "no", r_reg & 1<<0 ? "yes" : "no", p_reg & 1<<1 ? "yes" : "no", r_reg & 1<<1 ? "yes" : "no", p_reg & 1<<2 ? "yes" : "no", r_reg & 1<<2 ? "yes" : "no", p_reg & 1<<5 ? "yes" : "no", r_reg & 1<<5 ? "yes" : "no", p_reg & 1<<6 ? "yes" : "no", r_reg & 1<<6 ? "yes" : "no", p_reg & 1<<7 ? "yes" : "no", r_reg & 1<<7 ? "yes" : "no", p_rate, r_rate, p_chan, p_reg & 1<<14 ? "yes" : "no", r_reg & 1<<14 ? "yes" : "no", p_reg & 1<<15 ? "yes" : "no", r_reg & 1<<15 ? "yes" : "no", forte->play.buf_sz, forte->rec.buf_sz, forte->play.frag_sz, forte->rec.frag_sz, forte->play.frag_num, forte->rec.frag_num, forte->play.frag_msecs, forte->rec.frag_msecs, forte->play.filled_frags, forte->rec.filled_frags, forte->play.mapped ? "yes" : "no", forte->rec.mapped ? "yes" : "no" ); return i; } /** * forte_proc_init: * * Creates driver info entries in /proc */ static int __init forte_proc_init (void) { if (!proc_mkdir ("driver/forte", NULL)) return -EIO; if (!create_proc_read_entry ("driver/forte/chip", 0, NULL, forte_proc_read, forte)) { remove_proc_entry ("driver/forte", NULL); return -EIO; } if (!create_proc_read_entry("driver/forte/ac97", 0, NULL, ac97_read_proc, forte->ac97)) { remove_proc_entry ("driver/forte/chip", NULL); remove_proc_entry ("driver/forte", NULL); return -EIO; } return 0; } /** * forte_proc_remove: * * Removes driver info entries in /proc */ static void forte_proc_remove (void) { remove_proc_entry ("driver/forte/ac97", NULL); remove_proc_entry ("driver/forte/chip", NULL); remove_proc_entry ("driver/forte", NULL); } /** * forte_chip_init: * @chip: Chip instance to initialize * * Description: * Resets chip, configures codec and registers the driver with * the sound subsystem. * * Press and hold Start for 8 secs, then switch on Run * and hold for 4 seconds. Let go of Start. Numbers * assume a properly oiled TWG. */ static int __devinit forte_chip_init (struct forte_chip *chip) { u8 revision; u16 cmdw; struct ac97_codec *codec; pci_read_config_byte (chip->pci_dev, PCI_REVISION_ID, &revision); if (revision >= 0xB1) { chip->multichannel = 1; printk (KERN_INFO PFX "Multi-channel device detected.\n"); } /* Reset chip */ outw (FORTE_CC_CODEC_RESET | FORTE_CC_AC97_RESET, chip->iobase + FORTE_CODEC_CTRL); udelay(100); outw (0, chip->iobase + FORTE_CODEC_CTRL); /* Request read from AC97 */ outw (FORTE_AC97_READ | (0 << FORTE_AC97_ADDR_SHIFT), chip->iobase + FORTE_AC97_CMD); mdelay(750); if ((inw (chip->iobase + FORTE_AC97_CMD) & (3<<8)) != (1<<8)) { printk (KERN_INFO PFX "AC97 codec not responding"); return -EIO; } /* Init volume */ outw (0x0808, chip->iobase + FORTE_PCM_VOL); outw (0x9f1f, chip->iobase + FORTE_FM_VOL); outw (0x8808, chip->iobase + FORTE_I2S_VOL); /* I2S control - I2S mode */ outw (0x0003, chip->iobase + FORTE_I2S_MODE); /* Interrupt setup - unmask PLAYBACK & CAPTURE */ cmdw = inw (chip->iobase + FORTE_IRQ_MASK); cmdw &= ~0x0003; outw (cmdw, chip->iobase + FORTE_IRQ_MASK); /* Interrupt clear */ outw (FORTE_IRQ_PLAYBACK|FORTE_IRQ_CAPTURE, chip->iobase + FORTE_IRQ_STATUS); /* Set up the AC97 codec */ if ((codec = ac97_alloc_codec()) == NULL) return -ENOMEM; codec->private_data = chip; codec->codec_read = forte_ac97_read; codec->codec_write = forte_ac97_write; codec->id = 0; if (ac97_probe_codec (codec) == 0) { printk (KERN_ERR PFX "codec probe failed\n"); ac97_release_codec(codec); return -1; } /* Register mixer */ if ((codec->dev_mixer = register_sound_mixer (&forte_mixer_fops, -1)) < 0) { printk (KERN_ERR PFX "couldn't register mixer!\n"); ac97_release_codec(codec); return -1; } chip->ac97 = codec; /* Register DSP */ if ((chip->dsp = register_sound_dsp (&forte_dsp_fops, -1) ) < 0) { printk (KERN_ERR PFX "couldn't register dsp!\n"); return -1; } /* Register with /proc */ if (forte_proc_init()) { printk (KERN_ERR PFX "couldn't add entries to /proc!\n"); return -1; } return 0; } /** * forte_probe: * @pci_dev: PCI struct for probed device * @pci_id: * * Description: * Allocates chip instance, I/O region, and IRQ */ static int __init forte_probe (struct pci_dev *pci_dev, const struct pci_device_id *pci_id) { struct forte_chip *chip; int ret = 0; /* FIXME: Support more than one chip */ if (found++) return -EIO; /* Ignition */ if (pci_enable_device (pci_dev)) return -EIO; pci_set_master (pci_dev); /* Allocate chip instance and configure */ forte = (struct forte_chip *) kmalloc (sizeof (struct forte_chip), GFP_KERNEL); chip = forte; if (chip == NULL) { printk (KERN_WARNING PFX "Out of memory"); return -ENOMEM; } memset (chip, 0, sizeof (struct forte_chip)); chip->pci_dev = pci_dev; mutex_init(&chip->open_mutex); spin_lock_init (&chip->lock); spin_lock_init (&chip->ac97_lock); if (! request_region (pci_resource_start (pci_dev, 0), pci_resource_len (pci_dev, 0), DRIVER_NAME)) { printk (KERN_WARNING PFX "Unable to reserve I/O space"); ret = -ENOMEM; goto error; } chip->iobase = pci_resource_start (pci_dev, 0); chip->irq = pci_dev->irq; if (request_irq (chip->irq, forte_interrupt, IRQF_SHARED, DRIVER_NAME, chip)) { printk (KERN_WARNING PFX "Unable to reserve IRQ"); ret = -EIO; goto error; } pci_set_drvdata (pci_dev, chip); printk (KERN_INFO PFX "FM801 chip found at 0x%04lX-0x%16llX IRQ %u\n", chip->iobase, (unsigned long long)pci_resource_end (pci_dev, 0), chip->irq); /* Power it up */ if ((ret = forte_chip_init (chip)) == 0) return 0; error: if (chip->irq) free_irq (chip->irq, chip); if (chip->iobase) release_region (pci_resource_start (pci_dev, 0), pci_resource_len (pci_dev, 0)); kfree (chip); return ret; } /** * forte_remove: * @pci_dev: PCI device to unclaim * */ static void forte_remove (struct pci_dev *pci_dev) { struct forte_chip *chip = pci_get_drvdata (pci_dev); if (chip == NULL) return; /* Turn volume down to avoid popping */ outw (0x1f1f, chip->iobase + FORTE_PCM_VOL); outw (0x1f1f, chip->iobase + FORTE_FM_VOL); outw (0x1f1f, chip->iobase + FORTE_I2S_VOL); forte_proc_remove(); free_irq (chip->irq, chip); release_region (chip->iobase, pci_resource_len (pci_dev, 0)); unregister_sound_dsp (chip->dsp); unregister_sound_mixer (chip->ac97->dev_mixer); ac97_release_codec(chip->ac97); kfree (chip); printk (KERN_INFO PFX "driver released\n"); } static struct pci_device_id forte_pci_ids[] = { { 0x1319, 0x0801, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, { 0, } }; static struct pci_driver forte_pci_driver = { .name = DRIVER_NAME, .id_table = forte_pci_ids, .probe = forte_probe, .remove = forte_remove, }; /** * forte_init_module: * */ static int __init forte_init_module (void) { printk (KERN_INFO PFX DRIVER_VERSION "\n"); return pci_register_driver (&forte_pci_driver); } /** * forte_cleanup_module: * */ static void __exit forte_cleanup_module (void) { pci_unregister_driver (&forte_pci_driver); } module_init(forte_init_module); module_exit(forte_cleanup_module); MODULE_AUTHOR("Martin K. Petersen <mkp@mkp.net>"); MODULE_DESCRIPTION("ForteMedia FM801 OSS Driver"); MODULE_LICENSE("GPL"); MODULE_DEVICE_TABLE (pci, forte_pci_ids);