diff options
Diffstat (limited to 'sound/oss/btaudio.c')
| -rw-r--r-- | sound/oss/btaudio.c | 1136 |
1 files changed, 1136 insertions, 0 deletions
diff --git a/sound/oss/btaudio.c b/sound/oss/btaudio.c new file mode 100644 index 00000000000..a85093fec7b --- /dev/null +++ b/sound/oss/btaudio.c @@ -0,0 +1,1136 @@ +/* + btaudio - bt878 audio dma driver for linux 2.4.x + + (c) 2000-2002 Gerd Knorr <kraxel@bytesex.org> + + 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. + +*/ + +#include <linux/module.h> +#include <linux/errno.h> +#include <linux/pci.h> +#include <linux/sched.h> +#include <linux/signal.h> +#include <linux/types.h> +#include <linux/interrupt.h> +#include <linux/init.h> +#include <linux/poll.h> +#include <linux/sound.h> +#include <linux/soundcard.h> +#include <linux/slab.h> +#include <linux/kdev_t.h> +#include <asm/uaccess.h> +#include <asm/io.h> + + +/* mmio access */ +#define btwrite(dat,adr) writel((dat), (bta->mmio+(adr))) +#define btread(adr) readl(bta->mmio+(adr)) + +#define btand(dat,adr) btwrite((dat) & btread(adr), adr) +#define btor(dat,adr) btwrite((dat) | btread(adr), adr) +#define btaor(dat,mask,adr) btwrite((dat) | ((mask) & btread(adr)), adr) + +/* registers (shifted because bta->mmio is long) */ +#define REG_INT_STAT (0x100 >> 2) +#define REG_INT_MASK (0x104 >> 2) +#define REG_GPIO_DMA_CTL (0x10c >> 2) +#define REG_PACKET_LEN (0x110 >> 2) +#define REG_RISC_STRT_ADD (0x114 >> 2) +#define REG_RISC_COUNT (0x120 >> 2) + +/* IRQ bits - REG_INT_(STAT|MASK) */ +#define IRQ_SCERR (1 << 19) +#define IRQ_OCERR (1 << 18) +#define IRQ_PABORT (1 << 17) +#define IRQ_RIPERR (1 << 16) +#define IRQ_PPERR (1 << 15) +#define IRQ_FDSR (1 << 14) +#define IRQ_FTRGT (1 << 13) +#define IRQ_FBUS (1 << 12) +#define IRQ_RISCI (1 << 11) +#define IRQ_OFLOW (1 << 3) + +#define IRQ_BTAUDIO (IRQ_SCERR | IRQ_OCERR | IRQ_PABORT | IRQ_RIPERR |\ + IRQ_PPERR | IRQ_FDSR | IRQ_FTRGT | IRQ_FBUS |\ + IRQ_RISCI) + +/* REG_GPIO_DMA_CTL bits */ +#define DMA_CTL_A_PWRDN (1 << 26) +#define DMA_CTL_DA_SBR (1 << 14) +#define DMA_CTL_DA_ES2 (1 << 13) +#define DMA_CTL_ACAP_EN (1 << 4) +#define DMA_CTL_RISC_EN (1 << 1) +#define DMA_CTL_FIFO_EN (1 << 0) + +/* RISC instructions */ +#define RISC_WRITE (0x01 << 28) +#define RISC_JUMP (0x07 << 28) +#define RISC_SYNC (0x08 << 28) + +/* RISC bits */ +#define RISC_WR_SOL (1 << 27) +#define RISC_WR_EOL (1 << 26) +#define RISC_IRQ (1 << 24) +#define RISC_SYNC_RESYNC (1 << 15) +#define RISC_SYNC_FM1 0x06 +#define RISC_SYNC_VRO 0x0c + +#define HWBASE_AD (448000) + +/* -------------------------------------------------------------- */ + +struct btaudio { + /* linked list */ + struct btaudio *next; + + /* device info */ + int dsp_digital; + int dsp_analog; + int mixer_dev; + struct pci_dev *pci; + unsigned int irq; + unsigned long mem; + unsigned long __iomem *mmio; + + /* locking */ + int users; + struct semaphore lock; + + /* risc instructions */ + unsigned int risc_size; + unsigned long *risc_cpu; + dma_addr_t risc_dma; + + /* audio data */ + unsigned int buf_size; + unsigned char *buf_cpu; + dma_addr_t buf_dma; + + /* buffer setup */ + int line_bytes; + int line_count; + int block_bytes; + int block_count; + + /* read fifo management */ + int recording; + int dma_block; + int read_offset; + int read_count; + wait_queue_head_t readq; + + /* settings */ + int gain[3]; + int source; + int bits; + int decimation; + int mixcount; + int sampleshift; + int channels; + int analog; + int rate; +}; + +struct cardinfo { + char *name; + int rate; +}; + +static struct btaudio *btaudios; +static unsigned int debug; +static unsigned int irq_debug; + +/* -------------------------------------------------------------- */ + +#define BUF_DEFAULT 128*1024 +#define BUF_MIN 8192 + +static int alloc_buffer(struct btaudio *bta) +{ + if (NULL == bta->buf_cpu) { + for (bta->buf_size = BUF_DEFAULT; bta->buf_size >= BUF_MIN; + bta->buf_size = bta->buf_size >> 1) { + bta->buf_cpu = pci_alloc_consistent + (bta->pci, bta->buf_size, &bta->buf_dma); + if (NULL != bta->buf_cpu) + break; + } + if (NULL == bta->buf_cpu) + return -ENOMEM; + memset(bta->buf_cpu,0,bta->buf_size); + } + if (NULL == bta->risc_cpu) { + bta->risc_size = PAGE_SIZE; + bta->risc_cpu = pci_alloc_consistent + (bta->pci, bta->risc_size, &bta->risc_dma); + if (NULL == bta->risc_cpu) { + pci_free_consistent(bta->pci, bta->buf_size, bta->buf_cpu, bta->buf_dma); + bta->buf_cpu = NULL; + return -ENOMEM; + } + } + return 0; +} + +static void free_buffer(struct btaudio *bta) +{ + if (NULL != bta->buf_cpu) { + pci_free_consistent(bta->pci, bta->buf_size, + bta->buf_cpu, bta->buf_dma); + bta->buf_cpu = NULL; + } + if (NULL != bta->risc_cpu) { + pci_free_consistent(bta->pci, bta->risc_size, + bta->risc_cpu, bta->risc_dma); + bta->risc_cpu = NULL; + } +} + +static int make_risc(struct btaudio *bta) +{ + int rp, bp, line, block; + unsigned long risc; + + bta->block_bytes = bta->buf_size >> 4; + bta->block_count = 1 << 4; + bta->line_bytes = bta->block_bytes; + bta->line_count = bta->block_count; + while (bta->line_bytes > 4095) { + bta->line_bytes >>= 1; + bta->line_count <<= 1; + } + if (bta->line_count > 255) + return -EINVAL; + if (debug) + printk(KERN_DEBUG + "btaudio: bufsize=%d - bs=%d bc=%d - ls=%d, lc=%d\n", + bta->buf_size,bta->block_bytes,bta->block_count, + bta->line_bytes,bta->line_count); + rp = 0; bp = 0; + block = 0; + bta->risc_cpu[rp++] = cpu_to_le32(RISC_SYNC|RISC_SYNC_FM1); + bta->risc_cpu[rp++] = cpu_to_le32(0); + for (line = 0; line < bta->line_count; line++) { + risc = RISC_WRITE | RISC_WR_SOL | RISC_WR_EOL; + risc |= bta->line_bytes; + if (0 == (bp & (bta->block_bytes-1))) { + risc |= RISC_IRQ; + risc |= (block & 0x0f) << 16; + risc |= (~block & 0x0f) << 20; + block++; + } + bta->risc_cpu[rp++] = cpu_to_le32(risc); + bta->risc_cpu[rp++] = cpu_to_le32(bta->buf_dma + bp); + bp += bta->line_bytes; + } + bta->risc_cpu[rp++] = cpu_to_le32(RISC_SYNC|RISC_SYNC_VRO); + bta->risc_cpu[rp++] = cpu_to_le32(0); + bta->risc_cpu[rp++] = cpu_to_le32(RISC_JUMP); + bta->risc_cpu[rp++] = cpu_to_le32(bta->risc_dma); + return 0; +} + +static int start_recording(struct btaudio *bta) +{ + int ret; + + if (0 != (ret = alloc_buffer(bta))) + return ret; + if (0 != (ret = make_risc(bta))) + return ret; + + btwrite(bta->risc_dma, REG_RISC_STRT_ADD); + btwrite((bta->line_count << 16) | bta->line_bytes, + REG_PACKET_LEN); + btwrite(IRQ_BTAUDIO, REG_INT_MASK); + if (bta->analog) { + btwrite(DMA_CTL_ACAP_EN | + DMA_CTL_RISC_EN | + DMA_CTL_FIFO_EN | + DMA_CTL_DA_ES2 | + ((bta->bits == 8) ? DMA_CTL_DA_SBR : 0) | + (bta->gain[bta->source] << 28) | + (bta->source << 24) | + (bta->decimation << 8), + REG_GPIO_DMA_CTL); + } else { + btwrite(DMA_CTL_ACAP_EN | + DMA_CTL_RISC_EN | + DMA_CTL_FIFO_EN | + DMA_CTL_DA_ES2 | + DMA_CTL_A_PWRDN | + (1 << 6) | + ((bta->bits == 8) ? DMA_CTL_DA_SBR : 0) | + (bta->gain[bta->source] << 28) | + (bta->source << 24) | + (bta->decimation << 8), + REG_GPIO_DMA_CTL); + } + bta->dma_block = 0; + bta->read_offset = 0; + bta->read_count = 0; + bta->recording = 1; + if (debug) + printk(KERN_DEBUG "btaudio: recording started\n"); + return 0; +} + +static void stop_recording(struct btaudio *bta) +{ + btand(~15, REG_GPIO_DMA_CTL); + bta->recording = 0; + if (debug) + printk(KERN_DEBUG "btaudio: recording stopped\n"); +} + + +/* -------------------------------------------------------------- */ + +static int btaudio_mixer_open(struct inode *inode, struct file *file) +{ + int minor = iminor(inode); + struct btaudio *bta; + + for (bta = btaudios; bta != NULL; bta = bta->next) + if (bta->mixer_dev == minor) + break; + if (NULL == bta) + return -ENODEV; + + if (debug) + printk("btaudio: open mixer [%d]\n",minor); + file->private_data = bta; + return 0; +} + +static int btaudio_mixer_release(struct inode *inode, struct file *file) +{ + return 0; +} + +static int btaudio_mixer_ioctl(struct inode *inode, struct file *file, + unsigned int cmd, unsigned long arg) +{ + struct btaudio *bta = file->private_data; + int ret,val=0,i=0; + void __user *argp = (void __user *)arg; + + if (cmd == SOUND_MIXER_INFO) { + mixer_info info; + memset(&info,0,sizeof(info)); + strlcpy(info.id,"bt878",sizeof(info.id)); + strlcpy(info.name,"Brooktree Bt878 audio",sizeof(info.name)); + info.modify_counter = bta->mixcount; + if (copy_to_user(argp, &info, sizeof(info))) + return -EFAULT; + return 0; + } + if (cmd == SOUND_OLD_MIXER_INFO) { + _old_mixer_info info; + memset(&info,0,sizeof(info)); + strlcpy(info.id,"bt878",sizeof(info.id)-1); + strlcpy(info.name,"Brooktree Bt878 audio",sizeof(info.name)); + if (copy_to_user(argp, &info, sizeof(info))) + return -EFAULT; + return 0; + } + if (cmd == OSS_GETVERSION) + return put_user(SOUND_VERSION, (int __user *)argp); + + /* read */ + if (_SIOC_DIR(cmd) & _SIOC_WRITE) + if (get_user(val, (int __user *)argp)) + return -EFAULT; + + switch (cmd) { + case MIXER_READ(SOUND_MIXER_CAPS): + ret = SOUND_CAP_EXCL_INPUT; + break; + case MIXER_READ(SOUND_MIXER_STEREODEVS): + ret = 0; + break; + case MIXER_READ(SOUND_MIXER_RECMASK): + case MIXER_READ(SOUND_MIXER_DEVMASK): + ret = SOUND_MASK_LINE1|SOUND_MASK_LINE2|SOUND_MASK_LINE3; + break; + + case MIXER_WRITE(SOUND_MIXER_RECSRC): + if (val & SOUND_MASK_LINE1 && bta->source != 0) + bta->source = 0; + else if (val & SOUND_MASK_LINE2 && bta->source != 1) + bta->source = 1; + else if (val & SOUND_MASK_LINE3 && bta->source != 2) + bta->source = 2; + btaor((bta->gain[bta->source] << 28) | + (bta->source << 24), + 0x0cffffff, REG_GPIO_DMA_CTL); + case MIXER_READ(SOUND_MIXER_RECSRC): + switch (bta->source) { + case 0: ret = SOUND_MASK_LINE1; break; + case 1: ret = SOUND_MASK_LINE2; break; + case 2: ret = SOUND_MASK_LINE3; break; + default: ret = 0; + } + break; + + case MIXER_WRITE(SOUND_MIXER_LINE1): + case MIXER_WRITE(SOUND_MIXER_LINE2): + case MIXER_WRITE(SOUND_MIXER_LINE3): + if (MIXER_WRITE(SOUND_MIXER_LINE1) == cmd) + i = 0; + if (MIXER_WRITE(SOUND_MIXER_LINE2) == cmd) + i = 1; + if (MIXER_WRITE(SOUND_MIXER_LINE3) == cmd) + i = 2; + bta->gain[i] = (val & 0xff) * 15 / 100; + if (bta->gain[i] > 15) bta->gain[i] = 15; + if (bta->gain[i] < 0) bta->gain[i] = 0; + if (i == bta->source) + btaor((bta->gain[bta->source]<<28), + 0x0fffffff, REG_GPIO_DMA_CTL); + ret = bta->gain[i] * 100 / 15; + ret |= ret << 8; + break; + + case MIXER_READ(SOUND_MIXER_LINE1): + case MIXER_READ(SOUND_MIXER_LINE2): + case MIXER_READ(SOUND_MIXER_LINE3): + if (MIXER_READ(SOUND_MIXER_LINE1) == cmd) + i = 0; + if (MIXER_READ(SOUND_MIXER_LINE2) == cmd) + i = 1; + if (MIXER_READ(SOUND_MIXER_LINE3) == cmd) + i = 2; + ret = bta->gain[i] * 100 / 15; + ret |= ret << 8; + break; + + default: + return -EINVAL; + } + if (put_user(ret, (int __user *)argp)) + return -EFAULT; + return 0; +} + +static struct file_operations btaudio_mixer_fops = { + .owner = THIS_MODULE, + .llseek = no_llseek, + .open = btaudio_mixer_open, + .release = btaudio_mixer_release, + .ioctl = btaudio_mixer_ioctl, +}; + +/* -------------------------------------------------------------- */ + +static int btaudio_dsp_open(struct inode *inode, struct file *file, + struct btaudio *bta, int analog) +{ + down(&bta->lock); + if (bta->users) + goto busy; + bta->users++; + file->private_data = bta; + + bta->analog = analog; + bta->dma_block = 0; + bta->read_offset = 0; + bta->read_count = 0; + bta->sampleshift = 0; + + up(&bta->lock); + return 0; + + busy: + up(&bta->lock); + return -EBUSY; +} + +static int btaudio_dsp_open_digital(struct inode *inode, struct file *file) +{ + int minor = iminor(inode); + struct btaudio *bta; + + for (bta = btaudios; bta != NULL; bta = bta->next) + if (bta->dsp_digital == minor) + break; + if (NULL == bta) + return -ENODEV; + + if (debug) + printk("btaudio: open digital dsp [%d]\n",minor); + return btaudio_dsp_open(inode,file,bta,0); +} + +static int btaudio_dsp_open_analog(struct inode *inode, struct file *file) +{ + int minor = iminor(inode); + struct btaudio *bta; + + for (bta = btaudios; bta != NULL; bta = bta->next) + if (bta->dsp_analog == minor) + break; + if (NULL == bta) + return -ENODEV; + + if (debug) + printk("btaudio: open analog dsp [%d]\n",minor); + return btaudio_dsp_open(inode,file,bta,1); +} + +static int btaudio_dsp_release(struct inode *inode, struct file *file) +{ + struct btaudio *bta = file->private_data; + + down(&bta->lock); + if (bta->recording) + stop_recording(bta); + bta->users--; + up(&bta->lock); + return 0; +} + +static ssize_t btaudio_dsp_read(struct file *file, char __user *buffer, + size_t swcount, loff_t *ppos) +{ + struct btaudio *bta = file->private_data; + int hwcount = swcount << bta->sampleshift; + int nsrc, ndst, err, ret = 0; + DECLARE_WAITQUEUE(wait, current); + + add_wait_queue(&bta->readq, &wait); + down(&bta->lock); + while (swcount > 0) { + if (0 == bta->read_count) { + if (!bta->recording) { + if (0 != (err = start_recording(bta))) { + if (0 == ret) + ret = err; + break; + } + } + if (file->f_flags & O_NONBLOCK) { + if (0 == ret) + ret = -EAGAIN; + break; + } + up(&bta->lock); + current->state = TASK_INTERRUPTIBLE; + schedule(); + down(&bta->lock); + if(signal_pending(current)) { + if (0 == ret) + ret = -EINTR; + break; + } + } + nsrc = (bta->read_count < hwcount) ? bta->read_count : hwcount; + if (nsrc > bta->buf_size - bta->read_offset) + nsrc = bta->buf_size - bta->read_offset; + ndst = nsrc >> bta->sampleshift; + + if ((bta->analog && 0 == bta->sampleshift) || + (!bta->analog && 2 == bta->channels)) { + /* just copy */ + if (copy_to_user(buffer + ret, bta->buf_cpu + bta->read_offset, nsrc)) { + if (0 == ret) + ret = -EFAULT; + break; + } + + } else if (!bta->analog) { + /* stereo => mono (digital audio) */ + __s16 *src = (__s16*)(bta->buf_cpu + bta->read_offset); + __s16 __user *dst = (__s16 __user *)(buffer + ret); + __s16 avg; + int n = ndst>>1; + if (!access_ok(VERIFY_WRITE, dst, ndst)) { + if (0 == ret) + ret = -EFAULT; + break; + } + for (; n; n--, dst++) { + avg = (__s16)le16_to_cpu(*src) / 2; src++; + avg += (__s16)le16_to_cpu(*src) / 2; src++; + __put_user(cpu_to_le16(avg),dst); + } + + } else if (8 == bta->bits) { + /* copy + byte downsampling (audio A/D) */ + __u8 *src = bta->buf_cpu + bta->read_offset; + __u8 __user *dst = buffer + ret; + int n = ndst; + if (!access_ok(VERIFY_WRITE, dst, ndst)) { + if (0 == ret) + ret = -EFAULT; + break; + } + for (; n; n--, src += (1 << bta->sampleshift), dst++) + __put_user(*src, dst); + + } else { + /* copy + word downsampling (audio A/D) */ + __u16 *src = (__u16*)(bta->buf_cpu + bta->read_offset); + __u16 __user *dst = (__u16 __user *)(buffer + ret); + int n = ndst>>1; + if (!access_ok(VERIFY_WRITE,dst,ndst)) { + if (0 == ret) + ret = -EFAULT; + break; + } + for (; n; n--, src += (1 << bta->sampleshift), dst++) + __put_user(*src, dst); + } + + ret += ndst; + swcount -= ndst; + hwcount -= nsrc; + bta->read_count -= nsrc; + bta->read_offset += nsrc; + if (bta->read_offset == bta->buf_size) + bta->read_offset = 0; + } + up(&bta->lock); + remove_wait_queue(&bta->readq, &wait); + current->state = TASK_RUNNING; + return ret; +} + +static ssize_t btaudio_dsp_write(struct file *file, const char __user *buffer, + size_t count, loff_t *ppos) +{ + return -EINVAL; +} + +static int btaudio_dsp_ioctl(struct inode *inode, struct file *file, + unsigned int cmd, unsigned long arg) +{ + struct btaudio *bta = file->private_data; + int s, i, ret, val = 0; + void __user *argp = (void __user *)arg; + int __user *p = argp; + + switch (cmd) { + case OSS_GETVERSION: + return put_user(SOUND_VERSION, p); + case SNDCTL_DSP_GETCAPS: + return 0; + + case SNDCTL_DSP_SPEED: + if (get_user(val, p)) + return -EFAULT; + if (bta->analog) { + for (s = 0; s < 16; s++) + if (val << s >= HWBASE_AD*4/15) + break; + for (i = 15; i >= 5; i--) + if (val << s <= HWBASE_AD*4/i) + break; + bta->sampleshift = s; + bta->decimation = i; + if (debug) + printk(KERN_DEBUG "btaudio: rate: req=%d " + "dec=%d shift=%d hwrate=%d swrate=%d\n", + val,i,s,(HWBASE_AD*4/i),(HWBASE_AD*4/i)>>s); + } else { + bta->sampleshift = (bta->channels == 2) ? 0 : 1; + bta->decimation = 0; + } + if (bta->recording) { + down(&bta->lock); + stop_recording(bta); + start_recording(bta); + up(&bta->lock); + } + /* fall through */ + case SOUND_PCM_READ_RATE: + if (bta->analog) { + return put_user(HWBASE_AD*4/bta->decimation>>bta->sampleshift, p); + } else { + return put_user(bta->rate, p); + } + + case SNDCTL_DSP_STEREO: + if (!bta->analog) { + if (get_user(val, p)) + return -EFAULT; + bta->channels = (val > 0) ? 2 : 1; + bta->sampleshift = (bta->channels == 2) ? 0 : 1; + if (debug) + printk(KERN_INFO + "btaudio: stereo=%d channels=%d\n", + val,bta->channels); + } else { + if (val == 1) + return -EFAULT; + else { + bta->channels = 1; + if (debug) + printk(KERN_INFO + "btaudio: stereo=0 channels=1\n"); + } + } + return put_user((bta->channels)-1, p); + + case SNDCTL_DSP_CHANNELS: + if (!bta->analog) { + if (get_user(val, p)) + return -EFAULT; + bta->channels = (val > 1) ? 2 : 1; + bta->sampleshift = (bta->channels == 2) ? 0 : 1; + if (debug) + printk(KERN_DEBUG + "btaudio: val=%d channels=%d\n", + val,bta->channels); + } + /* fall through */ + case SOUND_PCM_READ_CHANNELS: + return put_user(bta->channels, p); + + case SNDCTL_DSP_GETFMTS: /* Returns a mask */ + if (bta->analog) + return put_user(AFMT_S16_LE|AFMT_S8, p); + else + return put_user(AFMT_S16_LE, p); + + case SNDCTL_DSP_SETFMT: /* Selects ONE fmt*/ + if (get_user(val, p)) + return -EFAULT; + if (val != AFMT_QUERY) { + if (bta->analog) + bta->bits = (val == AFMT_S8) ? 8 : 16; + else + bta->bits = 16; + if (bta->recording) { + down(&bta->lock); + stop_recording(bta); + start_recording(bta); + up(&bta->lock); + } + } + if (debug) + printk(KERN_DEBUG "btaudio: fmt: bits=%d\n",bta->bits); + return put_user((bta->bits==16) ? AFMT_S16_LE : AFMT_S8, + p); + break; + case SOUND_PCM_READ_BITS: + return put_user(bta->bits, p); + + case SNDCTL_DSP_NONBLOCK: + file->f_flags |= O_NONBLOCK; + return 0; + + case SNDCTL_DSP_RESET: + if (bta->recording) { + down(&bta->lock); + stop_recording(bta); + up(&bta->lock); + } + return 0; + case SNDCTL_DSP_GETBLKSIZE: + if (!bta->recording) { + if (0 != (ret = alloc_buffer(bta))) + return ret; + if (0 != (ret = make_risc(bta))) + return ret; + } + return put_user(bta->block_bytes>>bta->sampleshift,p); + + case SNDCTL_DSP_SYNC: + /* NOP */ + return 0; + case SNDCTL_DSP_GETISPACE: + { + audio_buf_info info; + if (!bta->recording) + return -EINVAL; + info.fragsize = bta->block_bytes>>bta->sampleshift; + info.fragstotal = bta->block_count; + info.bytes = bta->read_count; + info.fragments = info.bytes / info.fragsize; + if (debug) + printk(KERN_DEBUG "btaudio: SNDCTL_DSP_GETISPACE " + "returns %d/%d/%d/%d\n", + info.fragsize, info.fragstotal, + info.bytes, info.fragments); + if (copy_to_user(argp, &info, sizeof(info))) + return -EFAULT; + return 0; + } +#if 0 /* TODO */ + case SNDCTL_DSP_GETTRIGGER: + case SNDCTL_DSP_SETTRIGGER: + case SNDCTL_DSP_SETFRAGMENT: +#endif + default: + return -EINVAL; + } +} + +static unsigned int btaudio_dsp_poll(struct file *file, struct poll_table_struct *wait) +{ + struct btaudio *bta = file->private_data; + unsigned int mask = 0; + + poll_wait(file, &bta->readq, wait); + + if (0 != bta->read_count) + mask |= (POLLIN | POLLRDNORM); + + return mask; +} + +static struct file_operations btaudio_digital_dsp_fops = { + .owner = THIS_MODULE, + .llseek = no_llseek, + .open = btaudio_dsp_open_digital, + .release = btaudio_dsp_release, + .read = btaudio_dsp_read, + .write = btaudio_dsp_write, + .ioctl = btaudio_dsp_ioctl, + .poll = btaudio_dsp_poll, +}; + +static struct file_operations btaudio_analog_dsp_fops = { + .owner = THIS_MODULE, + .llseek = no_llseek, + .open = btaudio_dsp_open_analog, + .release = btaudio_dsp_release, + .read = btaudio_dsp_read, + .write = btaudio_dsp_write, + .ioctl = btaudio_dsp_ioctl, + .poll = btaudio_dsp_poll, +}; + +/* -------------------------------------------------------------- */ + +static char *irq_name[] = { "", "", "", "OFLOW", "", "", "", "", "", "", "", + "RISCI", "FBUS", "FTRGT", "FDSR", "PPERR", + "RIPERR", "PABORT", "OCERR", "SCERR" }; + +static irqreturn_t btaudio_irq(int irq, void *dev_id, struct pt_regs * regs) +{ + int count = 0; + u32 stat,astat; + struct btaudio *bta = dev_id; + int handled = 0; + + for (;;) { + count++; + stat = btread(REG_INT_STAT); + astat = stat & btread(REG_INT_MASK); + if (!astat) + return IRQ_RETVAL(handled); + handled = 1; + btwrite(astat,REG_INT_STAT); + + if (irq_debug) { + int i; + printk(KERN_DEBUG "btaudio: irq loop=%d risc=%x, bits:", + count, stat>>28); + for (i = 0; i < (sizeof(irq_name)/sizeof(char*)); i++) { + if (stat & (1 << i)) + printk(" %s",irq_name[i]); + if (astat & (1 << i)) + printk("*"); + } + printk("\n"); + } + if (stat & IRQ_RISCI) { + int blocks; + blocks = (stat >> 28) - bta->dma_block; + if (blocks < 0) + blocks += bta->block_count; + bta->dma_block = stat >> 28; + if (bta->read_count + 2*bta->block_bytes > bta->buf_size) { + stop_recording(bta); + printk(KERN_INFO "btaudio: buffer overrun\n"); + } + if (blocks > 0) { + bta->read_count += blocks * bta->block_bytes; + wake_up_interruptible(&bta->readq); + } + } + if (count > 10) { + printk(KERN_WARNING + "btaudio: Oops - irq mask cleared\n"); + btwrite(0, REG_INT_MASK); + } + } + return IRQ_NONE; +} + +/* -------------------------------------------------------------- */ + +static unsigned int dsp1 = -1; +static unsigned int dsp2 = -1; +static unsigned int mixer = -1; +static int latency = -1; +static int digital = 1; +static int analog = 1; +static int rate; + +#define BTA_OSPREY200 1 + +static struct cardinfo cards[] = { + [0] = { + .name = "default", + .rate = 32000, + }, + [BTA_OSPREY200] = { + .name = "Osprey 200", + .rate = 44100, + }, +}; + +static int __devinit btaudio_probe(struct pci_dev *pci_dev, + const struct pci_device_id *pci_id) +{ + struct btaudio *bta; + struct cardinfo *card = &cards[pci_id->driver_data]; + unsigned char revision,lat; + int rc = -EBUSY; + + if (pci_enable_device(pci_dev)) + return -EIO; + if (!request_mem_region(pci_resource_start(pci_dev,0), + pci_resource_len(pci_dev,0), + "btaudio")) { + return -EBUSY; + } + + bta = kmalloc(sizeof(*bta),GFP_ATOMIC); + if (!bta) { + rc = -ENOMEM; + goto fail0; + } + memset(bta,0,sizeof(*bta)); + + bta->pci = pci_dev; + bta->irq = pci_dev->irq; + bta->mem = pci_resource_start(pci_dev,0); + bta->mmio = ioremap(pci_resource_start(pci_dev,0), + pci_resource_len(pci_dev,0)); + + bta->source = 1; + bta->bits = 8; + bta->channels = 1; + if (bta->analog) { + bta->decimation = 15; + } else { + bta->decimation = 0; + bta->sampleshift = 1; + } + + /* sample rate */ + bta->rate = card->rate; + if (rate) + bta->rate = rate; + + init_MUTEX(&bta->lock); + init_waitqueue_head(&bta->readq); + + if (-1 != latency) { + printk(KERN_INFO "btaudio: setting pci latency timer to %d\n", + latency); + pci_write_config_byte(pci_dev, PCI_LATENCY_TIMER, latency); + } + pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &revision); + pci_read_config_byte(pci_dev, PCI_LATENCY_TIMER, &lat); + printk(KERN_INFO "btaudio: Bt%x (rev %d) at %02x:%02x.%x, ", + pci_dev->device,revision,pci_dev->bus->number, + PCI_SLOT(pci_dev->devfn),PCI_FUNC(pci_dev->devfn)); + printk("irq: %d, latency: %d, mmio: 0x%lx\n", + bta->irq, lat, bta->mem); + printk("btaudio: using card config \"%s\"\n", card->name); + + /* init hw */ + btwrite(0, REG_GPIO_DMA_CTL); + btwrite(0, REG_INT_MASK); + btwrite(~0U, REG_INT_STAT); + pci_set_master(pci_dev); + + if ((rc = request_irq(bta->irq, btaudio_irq, SA_SHIRQ|SA_INTERRUPT, + "btaudio",(void *)bta)) < 0) { + printk(KERN_WARNING + "btaudio: can't request irq (rc=%d)\n",rc); + goto fail1; + } + + /* register devices */ + if (digital) { + rc = bta->dsp_digital = + register_sound_dsp(&btaudio_digital_dsp_fops,dsp1); + if (rc < 0) { + printk(KERN_WARNING + "btaudio: can't register digital dsp (rc=%d)\n",rc); + goto fail2; + } + printk(KERN_INFO "btaudio: registered device dsp%d [digital]\n", + bta->dsp_digital >> 4); + } + if (analog) { + rc = bta->dsp_analog = + register_sound_dsp(&btaudio_analog_dsp_fops,dsp2); + if (rc < 0) { + printk(KERN_WARNING + "btaudio: can't register analog dsp (rc=%d)\n",rc); + goto fail3; + } + printk(KERN_INFO "btaudio: registered device dsp%d [analog]\n", + bta->dsp_analog >> 4); + rc = bta->mixer_dev = register_sound_mixer(&btaudio_mixer_fops,mixer); + if (rc < 0) { + printk(KERN_WARNING + "btaudio: can't register mixer (rc=%d)\n",rc); + goto fail4; + } + printk(KERN_INFO "btaudio: registered device mixer%d\n", + bta->mixer_dev >> 4); + } + + /* hook into linked list */ + bta->next = btaudios; + btaudios = bta; + + pci_set_drvdata(pci_dev,bta); + return 0; + + fail4: + unregister_sound_dsp(bta->dsp_analog); + fail3: + if (digital) + unregister_sound_dsp(bta->dsp_digital); + fail2: + free_irq(bta->irq,bta); + fail1: + kfree(bta); + fail0: + release_mem_region(pci_resource_start(pci_dev,0), + pci_resource_len(pci_dev,0)); + return rc; +} + +static void __devexit btaudio_remove(struct pci_dev *pci_dev) +{ + struct btaudio *bta = pci_get_drvdata(pci_dev); + struct btaudio *walk; + + /* turn off all DMA / IRQs */ + btand(~15, REG_GPIO_DMA_CTL); + btwrite(0, REG_INT_MASK); + btwrite(~0U, REG_INT_STAT); + + /* unregister devices */ + if (digital) { + unregister_sound_dsp(bta->dsp_digital); + } + if (analog) { + unregister_sound_dsp(bta->dsp_analog); + unregister_sound_mixer(bta->mixer_dev); + } + + /* free resources */ + free_buffer(bta); + free_irq(bta->irq,bta); + release_mem_region(pci_resource_start(pci_dev,0), + pci_resource_len(pci_dev,0)); + + /* remove from linked list */ + if (bta == btaudios) { + btaudios = NULL; + } else { + for (walk = btaudios; walk->next != bta; walk = walk->next) + ; /* if (NULL == walk->next) BUG(); */ + walk->next = bta->next; + } + + pci_set_drvdata(pci_dev, NULL); + kfree(bta); + return; +} + +/* -------------------------------------------------------------- */ + +static struct pci_device_id btaudio_pci_tbl[] = { + { + .vendor = PCI_VENDOR_ID_BROOKTREE, + .device = 0x0878, + .subvendor = 0x0070, + .subdevice = 0xff01, + .driver_data = BTA_OSPREY200, + },{ + .vendor = PCI_VENDOR_ID_BROOKTREE, + .device = 0x0878, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + },{ + .vendor = PCI_VENDOR_ID_BROOKTREE, + .device = 0x0878, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + },{ + /* --- end of list --- */ + } +}; + +static struct pci_driver btaudio_pci_driver = { + .name = "btaudio", + .id_table = btaudio_pci_tbl, + .probe = btaudio_probe, + .remove = __devexit_p(btaudio_remove), +}; + +static int btaudio_init_module(void) +{ + printk(KERN_INFO "btaudio: driver version 0.7 loaded [%s%s%s]\n", + digital ? "digital" : "", + analog && digital ? "+" : "", + analog ? "analog" : ""); + return pci_module_init(&btaudio_pci_driver); +} + +static void btaudio_cleanup_module(void) +{ + pci_unregister_driver(&btaudio_pci_driver); + return; +} + +module_init(btaudio_init_module); +module_exit(btaudio_cleanup_module); + +module_param(dsp1, int, S_IRUGO); +module_param(dsp2, int, S_IRUGO); +module_param(mixer, int, S_IRUGO); +module_param(debug, int, S_IRUGO | S_IWUSR); +module_param(irq_debug, int, S_IRUGO | S_IWUSR); +module_param(digital, int, S_IRUGO); +module_param(analog, int, S_IRUGO); +module_param(rate, int, S_IRUGO); +module_param(latency, int, S_IRUGO); +MODULE_PARM_DESC(latency,"pci latency timer"); + +MODULE_DEVICE_TABLE(pci, btaudio_pci_tbl); +MODULE_DESCRIPTION("bt878 audio dma driver"); +MODULE_AUTHOR("Gerd Knorr"); +MODULE_LICENSE("GPL"); + +/* + * Local variables: + * c-basic-offset: 8 + * End: + */ |