diff options
Diffstat (limited to 'sound/oss/au1550_ac97.c')
| -rw-r--r-- | sound/oss/au1550_ac97.c | 2147 |
1 files changed, 0 insertions, 2147 deletions
diff --git a/sound/oss/au1550_ac97.c b/sound/oss/au1550_ac97.c deleted file mode 100644 index a8f626d99c5..00000000000 --- a/sound/oss/au1550_ac97.c +++ /dev/null @@ -1,2147 +0,0 @@ -/* - * au1550_ac97.c -- Sound driver for Alchemy Au1550 MIPS Internet Edge - * Processor. - * - * Copyright 2004 Embedded Edge, LLC - * dan@embeddededge.com - * - * Mostly copied from the au1000.c driver and some from the - * PowerMac dbdma driver. - * We assume the processor can do memory coherent DMA. - * - * Ported to 2.6 by Matt Porter <mporter@kernel.crashing.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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * 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. - * - */ - -#undef DEBUG - -#include <linux/module.h> -#include <linux/string.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/init.h> -#include <linux/interrupt.h> -#include <linux/kernel.h> -#include <linux/poll.h> -#include <linux/bitops.h> -#include <linux/spinlock.h> -#include <linux/ac97_codec.h> -#include <linux/mutex.h> - -#include <asm/io.h> -#include <asm/uaccess.h> -#include <asm/hardirq.h> -#include <asm/mach-au1x00/au1xxx_psc.h> -#include <asm/mach-au1x00/au1xxx_dbdma.h> -#include <asm/mach-au1x00/au1xxx.h> - -#undef OSS_DOCUMENTED_MIXER_SEMANTICS - -/* misc stuff */ -#define POLL_COUNT 0x50000 -#define AC97_EXT_DACS (AC97_EXTID_SDAC | AC97_EXTID_CDAC | AC97_EXTID_LDAC) - -/* The number of DBDMA ring descriptors to allocate. No sense making - * this too large....if you can't keep up with a few you aren't likely - * to be able to with lots of them, either. - */ -#define NUM_DBDMA_DESCRIPTORS 4 - -#define err(format, arg...) printk(KERN_ERR format "\n" , ## arg) - -/* Boot options - * 0 = no VRA, 1 = use VRA if codec supports it - */ -static DEFINE_MUTEX(au1550_ac97_mutex); -static int vra = 1; -module_param(vra, bool, 0); -MODULE_PARM_DESC(vra, "if 1 use VRA if codec supports it"); - -static struct au1550_state { - /* soundcore stuff */ - int dev_audio; - - struct ac97_codec *codec; - unsigned codec_base_caps; /* AC'97 reg 00h, "Reset Register" */ - unsigned codec_ext_caps; /* AC'97 reg 28h, "Extended Audio ID" */ - int no_vra; /* do not use VRA */ - - spinlock_t lock; - struct mutex open_mutex; - struct mutex sem; - fmode_t open_mode; - wait_queue_head_t open_wait; - - struct dmabuf { - u32 dmanr; - unsigned sample_rate; - unsigned src_factor; - unsigned sample_size; - int num_channels; - int dma_bytes_per_sample; - int user_bytes_per_sample; - int cnt_factor; - - void *rawbuf; - unsigned buforder; - unsigned numfrag; - unsigned fragshift; - void *nextIn; - void *nextOut; - int count; - unsigned total_bytes; - unsigned error; - wait_queue_head_t wait; - - /* redundant, but makes calculations easier */ - unsigned fragsize; - unsigned dma_fragsize; - unsigned dmasize; - unsigned dma_qcount; - - /* OSS stuff */ - unsigned mapped:1; - unsigned ready:1; - unsigned stopped:1; - unsigned ossfragshift; - int ossmaxfrags; - unsigned subdivision; - } dma_dac, dma_adc; -} au1550_state; - -static unsigned -ld2(unsigned int x) -{ - unsigned r = 0; - - if (x >= 0x10000) { - x >>= 16; - r += 16; - } - if (x >= 0x100) { - x >>= 8; - r += 8; - } - if (x >= 0x10) { - x >>= 4; - r += 4; - } - if (x >= 4) { - x >>= 2; - r += 2; - } - if (x >= 2) - r++; - return r; -} - -static void -au1550_delay(int msec) -{ - if (in_interrupt()) - return; - - schedule_timeout_uninterruptible(msecs_to_jiffies(msec)); -} - -static u16 -rdcodec(struct ac97_codec *codec, u8 addr) -{ - struct au1550_state *s = codec->private_data; - unsigned long flags; - u32 cmd, val; - u16 data; - int i; - - spin_lock_irqsave(&s->lock, flags); - - for (i = 0; i < POLL_COUNT; i++) { - val = au_readl(PSC_AC97STAT); - au_sync(); - if (!(val & PSC_AC97STAT_CP)) - break; - } - if (i == POLL_COUNT) - err("rdcodec: codec cmd pending expired!"); - - cmd = (u32)PSC_AC97CDC_INDX(addr); - cmd |= PSC_AC97CDC_RD; /* read command */ - au_writel(cmd, PSC_AC97CDC); - au_sync(); - - /* now wait for the data - */ - for (i = 0; i < POLL_COUNT; i++) { - val = au_readl(PSC_AC97STAT); - au_sync(); - if (!(val & PSC_AC97STAT_CP)) - break; - } - if (i == POLL_COUNT) { - err("rdcodec: read poll expired!"); - data = 0; - goto out; - } - - /* wait for command done? - */ - for (i = 0; i < POLL_COUNT; i++) { - val = au_readl(PSC_AC97EVNT); - au_sync(); - if (val & PSC_AC97EVNT_CD) - break; - } - if (i == POLL_COUNT) { - err("rdcodec: read cmdwait expired!"); - data = 0; - goto out; - } - - data = au_readl(PSC_AC97CDC) & 0xffff; - au_sync(); - - /* Clear command done event. - */ - au_writel(PSC_AC97EVNT_CD, PSC_AC97EVNT); - au_sync(); - - out: - spin_unlock_irqrestore(&s->lock, flags); - - return data; -} - - -static void -wrcodec(struct ac97_codec *codec, u8 addr, u16 data) -{ - struct au1550_state *s = codec->private_data; - unsigned long flags; - u32 cmd, val; - int i; - - spin_lock_irqsave(&s->lock, flags); - - for (i = 0; i < POLL_COUNT; i++) { - val = au_readl(PSC_AC97STAT); - au_sync(); - if (!(val & PSC_AC97STAT_CP)) - break; - } - if (i == POLL_COUNT) - err("wrcodec: codec cmd pending expired!"); - - cmd = (u32)PSC_AC97CDC_INDX(addr); - cmd |= (u32)data; - au_writel(cmd, PSC_AC97CDC); - au_sync(); - - for (i = 0; i < POLL_COUNT; i++) { - val = au_readl(PSC_AC97STAT); - au_sync(); - if (!(val & PSC_AC97STAT_CP)) - break; - } - if (i == POLL_COUNT) - err("wrcodec: codec cmd pending expired!"); - - for (i = 0; i < POLL_COUNT; i++) { - val = au_readl(PSC_AC97EVNT); - au_sync(); - if (val & PSC_AC97EVNT_CD) - break; - } - if (i == POLL_COUNT) - err("wrcodec: read cmdwait expired!"); - - /* Clear command done event. - */ - au_writel(PSC_AC97EVNT_CD, PSC_AC97EVNT); - au_sync(); - - spin_unlock_irqrestore(&s->lock, flags); -} - -static void -waitcodec(struct ac97_codec *codec) -{ - u16 temp; - u32 val; - int i; - - /* codec_wait is used to wait for a ready state after - * an AC97C_RESET. - */ - au1550_delay(10); - - /* first poll the CODEC_READY tag bit - */ - for (i = 0; i < POLL_COUNT; i++) { - val = au_readl(PSC_AC97STAT); - au_sync(); - if (val & PSC_AC97STAT_CR) - break; - } - if (i == POLL_COUNT) { - err("waitcodec: CODEC_READY poll expired!"); - return; - } - - /* get AC'97 powerdown control/status register - */ - temp = rdcodec(codec, AC97_POWER_CONTROL); - - /* If anything is powered down, power'em up - */ - if (temp & 0x7f00) { - /* Power on - */ - wrcodec(codec, AC97_POWER_CONTROL, 0); - au1550_delay(100); - - /* Reread - */ - temp = rdcodec(codec, AC97_POWER_CONTROL); - } - - /* Check if Codec REF,ANL,DAC,ADC ready - */ - if ((temp & 0x7f0f) != 0x000f) - err("codec reg 26 status (0x%x) not ready!!", temp); -} - -/* stop the ADC before calling */ -static void -set_adc_rate(struct au1550_state *s, unsigned rate) -{ - struct dmabuf *adc = &s->dma_adc; - struct dmabuf *dac = &s->dma_dac; - unsigned adc_rate, dac_rate; - u16 ac97_extstat; - - if (s->no_vra) { - /* calc SRC factor - */ - adc->src_factor = ((96000 / rate) + 1) >> 1; - adc->sample_rate = 48000 / adc->src_factor; - return; - } - - adc->src_factor = 1; - - ac97_extstat = rdcodec(s->codec, AC97_EXTENDED_STATUS); - - rate = rate > 48000 ? 48000 : rate; - - /* enable VRA - */ - wrcodec(s->codec, AC97_EXTENDED_STATUS, - ac97_extstat | AC97_EXTSTAT_VRA); - - /* now write the sample rate - */ - wrcodec(s->codec, AC97_PCM_LR_ADC_RATE, (u16) rate); - - /* read it back for actual supported rate - */ - adc_rate = rdcodec(s->codec, AC97_PCM_LR_ADC_RATE); - - pr_debug("set_adc_rate: set to %d Hz\n", adc_rate); - - /* some codec's don't allow unequal DAC and ADC rates, in which case - * writing one rate reg actually changes both. - */ - dac_rate = rdcodec(s->codec, AC97_PCM_FRONT_DAC_RATE); - if (dac->num_channels > 2) - wrcodec(s->codec, AC97_PCM_SURR_DAC_RATE, dac_rate); - if (dac->num_channels > 4) - wrcodec(s->codec, AC97_PCM_LFE_DAC_RATE, dac_rate); - - adc->sample_rate = adc_rate; - dac->sample_rate = dac_rate; -} - -/* stop the DAC before calling */ -static void -set_dac_rate(struct au1550_state *s, unsigned rate) -{ - struct dmabuf *dac = &s->dma_dac; - struct dmabuf *adc = &s->dma_adc; - unsigned adc_rate, dac_rate; - u16 ac97_extstat; - - if (s->no_vra) { - /* calc SRC factor - */ - dac->src_factor = ((96000 / rate) + 1) >> 1; - dac->sample_rate = 48000 / dac->src_factor; - return; - } - - dac->src_factor = 1; - - ac97_extstat = rdcodec(s->codec, AC97_EXTENDED_STATUS); - - rate = rate > 48000 ? 48000 : rate; - - /* enable VRA - */ - wrcodec(s->codec, AC97_EXTENDED_STATUS, - ac97_extstat | AC97_EXTSTAT_VRA); - - /* now write the sample rate - */ - wrcodec(s->codec, AC97_PCM_FRONT_DAC_RATE, (u16) rate); - - /* I don't support different sample rates for multichannel, - * so make these channels the same. - */ - if (dac->num_channels > 2) - wrcodec(s->codec, AC97_PCM_SURR_DAC_RATE, (u16) rate); - if (dac->num_channels > 4) - wrcodec(s->codec, AC97_PCM_LFE_DAC_RATE, (u16) rate); - /* read it back for actual supported rate - */ - dac_rate = rdcodec(s->codec, AC97_PCM_FRONT_DAC_RATE); - - pr_debug("set_dac_rate: set to %d Hz\n", dac_rate); - - /* some codec's don't allow unequal DAC and ADC rates, in which case - * writing one rate reg actually changes both. - */ - adc_rate = rdcodec(s->codec, AC97_PCM_LR_ADC_RATE); - - dac->sample_rate = dac_rate; - adc->sample_rate = adc_rate; -} - -static void -stop_dac(struct au1550_state *s) -{ - struct dmabuf *db = &s->dma_dac; - u32 stat; - unsigned long flags; - - if (db->stopped) - return; - - spin_lock_irqsave(&s->lock, flags); - - au_writel(PSC_AC97PCR_TP, PSC_AC97PCR); - au_sync(); - - /* Wait for Transmit Busy to show disabled. - */ - do { - stat = au_readl(PSC_AC97STAT); - au_sync(); - } while ((stat & PSC_AC97STAT_TB) != 0); - - au1xxx_dbdma_reset(db->dmanr); - - db->stopped = 1; - - spin_unlock_irqrestore(&s->lock, flags); -} - -static void -stop_adc(struct au1550_state *s) -{ - struct dmabuf *db = &s->dma_adc; - unsigned long flags; - u32 stat; - - if (db->stopped) - return; - - spin_lock_irqsave(&s->lock, flags); - - au_writel(PSC_AC97PCR_RP, PSC_AC97PCR); - au_sync(); - - /* Wait for Receive Busy to show disabled. - */ - do { - stat = au_readl(PSC_AC97STAT); - au_sync(); - } while ((stat & PSC_AC97STAT_RB) != 0); - - au1xxx_dbdma_reset(db->dmanr); - - db->stopped = 1; - - spin_unlock_irqrestore(&s->lock, flags); -} - - -static void -set_xmit_slots(int num_channels) -{ - u32 ac97_config, stat; - - ac97_config = au_readl(PSC_AC97CFG); - au_sync(); - ac97_config &= ~(PSC_AC97CFG_TXSLOT_MASK | PSC_AC97CFG_DE_ENABLE); - au_writel(ac97_config, PSC_AC97CFG); - au_sync(); - - switch (num_channels) { - case 6: /* stereo with surround and center/LFE, - * slots 3,4,6,7,8,9 - */ - ac97_config |= PSC_AC97CFG_TXSLOT_ENA(6); - ac97_config |= PSC_AC97CFG_TXSLOT_ENA(9); - - case 4: /* stereo with surround, slots 3,4,7,8 */ - ac97_config |= PSC_AC97CFG_TXSLOT_ENA(7); - ac97_config |= PSC_AC97CFG_TXSLOT_ENA(8); - - case 2: /* stereo, slots 3,4 */ - case 1: /* mono */ - ac97_config |= PSC_AC97CFG_TXSLOT_ENA(3); - ac97_config |= PSC_AC97CFG_TXSLOT_ENA(4); - } - - au_writel(ac97_config, PSC_AC97CFG); - au_sync(); - - ac97_config |= PSC_AC97CFG_DE_ENABLE; - au_writel(ac97_config, PSC_AC97CFG); - au_sync(); - - /* Wait for Device ready. - */ - do { - stat = au_readl(PSC_AC97STAT); - au_sync(); - } while ((stat & PSC_AC97STAT_DR) == 0); -} - -static void -set_recv_slots(int num_channels) -{ - u32 ac97_config, stat; - - ac97_config = au_readl(PSC_AC97CFG); - au_sync(); - ac97_config &= ~(PSC_AC97CFG_RXSLOT_MASK | PSC_AC97CFG_DE_ENABLE); - au_writel(ac97_config, PSC_AC97CFG); - au_sync(); - - /* Always enable slots 3 and 4 (stereo). Slot 6 is - * optional Mic ADC, which we don't support yet. - */ - ac97_config |= PSC_AC97CFG_RXSLOT_ENA(3); - ac97_config |= PSC_AC97CFG_RXSLOT_ENA(4); - - au_writel(ac97_config, PSC_AC97CFG); - au_sync(); - - ac97_config |= PSC_AC97CFG_DE_ENABLE; - au_writel(ac97_config, PSC_AC97CFG); - au_sync(); - - /* Wait for Device ready. - */ - do { - stat = au_readl(PSC_AC97STAT); - au_sync(); - } while ((stat & PSC_AC97STAT_DR) == 0); -} - -/* Hold spinlock for both start_dac() and start_adc() calls */ -static void -start_dac(struct au1550_state *s) -{ - struct dmabuf *db = &s->dma_dac; - - if (!db->stopped) - return; - - set_xmit_slots(db->num_channels); - au_writel(PSC_AC97PCR_TC, PSC_AC97PCR); - au_sync(); - au_writel(PSC_AC97PCR_TS, PSC_AC97PCR); - au_sync(); - - au1xxx_dbdma_start(db->dmanr); - - db->stopped = 0; -} - -static void -start_adc(struct au1550_state *s) -{ - struct dmabuf *db = &s->dma_adc; - int i; - - if (!db->stopped) - return; - - /* Put two buffers on the ring to get things started. - */ - for (i=0; i<2; i++) { - au1xxx_dbdma_put_dest(db->dmanr, virt_to_phys(db->nextIn), - db->dma_fragsize, DDMA_FLAGS_IE); - - db->nextIn += db->dma_fragsize; - if (db->nextIn >= db->rawbuf + db->dmasize) - db->nextIn -= db->dmasize; - } - - set_recv_slots(db->num_channels); - au1xxx_dbdma_start(db->dmanr); - au_writel(PSC_AC97PCR_RC, PSC_AC97PCR); - au_sync(); - au_writel(PSC_AC97PCR_RS, PSC_AC97PCR); - au_sync(); - - db->stopped = 0; -} - -static int -prog_dmabuf(struct au1550_state *s, struct dmabuf *db) -{ - unsigned user_bytes_per_sec; - unsigned bufs; - unsigned rate = db->sample_rate; - - if (!db->rawbuf) { - db->ready = db->mapped = 0; - db->buforder = 5; /* 32 * PAGE_SIZE */ - db->rawbuf = kmalloc((PAGE_SIZE << db->buforder), GFP_KERNEL); - if (!db->rawbuf) - return -ENOMEM; - } - - db->cnt_factor = 1; - if (db->sample_size == 8) - db->cnt_factor *= 2; - if (db->num_channels == 1) - db->cnt_factor *= 2; - db->cnt_factor *= db->src_factor; - - db->count = 0; - db->dma_qcount = 0; - db->nextIn = db->nextOut = db->rawbuf; - - db->user_bytes_per_sample = (db->sample_size>>3) * db->num_channels; - db->dma_bytes_per_sample = 2 * ((db->num_channels == 1) ? - 2 : db->num_channels); - - user_bytes_per_sec = rate * db->user_bytes_per_sample; - bufs = PAGE_SIZE << db->buforder; - if (db->ossfragshift) { - if ((1000 << db->ossfragshift) < user_bytes_per_sec) - db->fragshift = ld2(user_bytes_per_sec/1000); - else - db->fragshift = db->ossfragshift; - } else { - db->fragshift = ld2(user_bytes_per_sec / 100 / - (db->subdivision ? db->subdivision : 1)); - if (db->fragshift < 3) - db->fragshift = 3; - } - - db->fragsize = 1 << db->fragshift; - db->dma_fragsize = db->fragsize * db->cnt_factor; - db->numfrag = bufs / db->dma_fragsize; - - while (db->numfrag < 4 && db->fragshift > 3) { - db->fragshift--; - db->fragsize = 1 << db->fragshift; - db->dma_fragsize = db->fragsize * db->cnt_factor; - db->numfrag = bufs / db->dma_fragsize; - } - - if (db->ossmaxfrags >= 4 && db->ossmaxfrags < db->numfrag) - db->numfrag = db->ossmaxfrags; - - db->dmasize = db->dma_fragsize * db->numfrag; - memset(db->rawbuf, 0, bufs); - - pr_debug("prog_dmabuf: rate=%d, samplesize=%d, channels=%d\n", - rate, db->sample_size, db->num_channels); - pr_debug("prog_dmabuf: fragsize=%d, cnt_factor=%d, dma_fragsize=%d\n", - db->fragsize, db->cnt_factor, db->dma_fragsize); - pr_debug("prog_dmabuf: numfrag=%d, dmasize=%d\n", db->numfrag, db->dmasize); - - db->ready = 1; - return 0; -} - -static int -prog_dmabuf_adc(struct au1550_state *s) -{ - stop_adc(s); - return prog_dmabuf(s, &s->dma_adc); - -} - -static int -prog_dmabuf_dac(struct au1550_state *s) -{ - stop_dac(s); - return prog_dmabuf(s, &s->dma_dac); -} - - -static void dac_dma_interrupt(int irq, void *dev_id) -{ - struct au1550_state *s = (struct au1550_state *) dev_id; - struct dmabuf *db = &s->dma_dac; - u32 ac97c_stat; - - spin_lock(&s->lock); - - ac97c_stat = au_readl(PSC_AC97STAT); - if (ac97c_stat & (AC97C_XU | AC97C_XO | AC97C_TE)) - pr_debug("AC97C status = 0x%08x\n", ac97c_stat); - db->dma_qcount--; - - if (db->count >= db->fragsize) { - if (au1xxx_dbdma_put_source(db->dmanr, - virt_to_phys(db->nextOut), db->fragsize, - DDMA_FLAGS_IE) == 0) { - err("qcount < 2 and no ring room!"); - } - db->nextOut += db->fragsize; - if (db->nextOut >= db->rawbuf + db->dmasize) - db->nextOut -= db->dmasize; - db->count -= db->fragsize; - db->total_bytes += db->dma_fragsize; - db->dma_qcount++; - } - - /* wake up anybody listening */ - if (waitqueue_active(&db->wait)) - wake_up(&db->wait); - - spin_unlock(&s->lock); -} - - -static void adc_dma_interrupt(int irq, void *dev_id) -{ - struct au1550_state *s = (struct au1550_state *)dev_id; - struct dmabuf *dp = &s->dma_adc; - u32 obytes; - char *obuf; - - spin_lock(&s->lock); - - /* Pull the buffer from the dma queue. - */ - au1xxx_dbdma_get_dest(dp->dmanr, (void *)(&obuf), &obytes); - - if ((dp->count + obytes) > dp->dmasize) { - /* Overrun. Stop ADC and log the error - */ - spin_unlock(&s->lock); - stop_adc(s); - dp->error++; - err("adc overrun"); - return; - } - - /* Put a new empty buffer on the destination DMA. - */ - au1xxx_dbdma_put_dest(dp->dmanr, virt_to_phys(dp->nextIn), - dp->dma_fragsize, DDMA_FLAGS_IE); - - dp->nextIn += dp->dma_fragsize; - if (dp->nextIn >= dp->rawbuf + dp->dmasize) - dp->nextIn -= dp->dmasize; - - dp->count += obytes; - dp->total_bytes += obytes; - - /* wake up anybody listening - */ - if (waitqueue_active(&dp->wait)) - wake_up(&dp->wait); - - spin_unlock(&s->lock); -} - -static loff_t -au1550_llseek(struct file *file, loff_t offset, int origin) -{ - return -ESPIPE; -} - - -static int -au1550_open_mixdev(struct inode *inode, struct file *file) -{ - mutex_lock(&au1550_ac97_mutex); - file->private_data = &au1550_state; - mutex_unlock(&au1550_ac97_mutex); - return 0; -} - -static int -au1550_release_mixdev(struct inode *inode, struct file *file) -{ - return 0; -} - -static int -mixdev_ioctl(struct ac97_codec *codec, unsigned int cmd, - unsigned long arg) -{ - return codec->mixer_ioctl(codec, cmd, arg); -} - -static long -au1550_ioctl_mixdev(struct file *file, unsigned int cmd, unsigned long arg) -{ - struct au1550_state *s = file->private_data; - struct ac97_codec *codec = s->codec; - int ret; - - mutex_lock(&au1550_ac97_mutex); - ret = mixdev_ioctl(codec, cmd, arg); - mutex_unlock(&au1550_ac97_mutex); - - return ret; -} - -static /*const */ struct file_operations au1550_mixer_fops = { - .owner = THIS_MODULE, - .llseek = au1550_llseek, - .unlocked_ioctl = au1550_ioctl_mixdev, - .open = au1550_open_mixdev, - .release = au1550_release_mixdev, -}; - -static int -drain_dac(struct au1550_state *s, int nonblock) -{ - unsigned long flags; - int count, tmo; - - if (s->dma_dac.mapped || !s->dma_dac.ready || s->dma_dac.stopped) - return 0; - - for (;;) { - spin_lock_irqsave(&s->lock, flags); - count = s->dma_dac.count; - spin_unlock_irqrestore(&s->lock, flags); - if (count <= s->dma_dac.fragsize) - break; - if (signal_pending(current)) - break; - if (nonblock) - return -EBUSY; - tmo = 1000 * count / (s->no_vra ? - 48000 : s->dma_dac.sample_rate); - tmo /= s->dma_dac.dma_bytes_per_sample; - au1550_delay(tmo); - } - if (signal_pending(current)) - return -ERESTARTSYS; - return 0; -} - -static inline u8 S16_TO_U8(s16 ch) -{ - return (u8) (ch >> 8) + 0x80; -} -static inline s16 U8_TO_S16(u8 ch) -{ - return (s16) (ch - 0x80) << 8; -} - -/* - * Translates user samples to dma buffer suitable for AC'97 DAC data: - * If mono, copy left channel to right channel in dma buffer. - * If 8 bit samples, cvt to 16-bit before writing to dma buffer. - * If interpolating (no VRA), duplicate every audio frame src_factor times. - */ -static int -translate_from_user(struct dmabuf *db, char* dmabuf, char* userbuf, - int dmacount) -{ - int sample, i; - int interp_bytes_per_sample; - int num_samples; - int mono = (db->num_channels == 1); - char usersample[12]; - s16 ch, dmasample[6]; - - if (db->sample_size == 16 && !mono && db->src_factor == 1) { - /* no translation necessary, just copy - */ - if (copy_from_user(dmabuf, userbuf, dmacount)) - return -EFAULT; - return dmacount; - } - - interp_bytes_per_sample = db->dma_bytes_per_sample * db->src_factor; - num_samples = dmacount / interp_bytes_per_sample; - - for (sample = 0; sample < num_samples; sample++) { - if (copy_from_user(usersample, userbuf, - db->user_bytes_per_sample)) { - return -EFAULT; - } - - for (i = 0; i < db->num_channels; i++) { - if (db->sample_size == 8) - ch = U8_TO_S16(usersample[i]); - else - ch = *((s16 *) (&usersample[i * 2])); - dmasample[i] = ch; - if (mono) - dmasample[i + 1] = ch; /* right channel */ - } - - /* duplicate every audio frame src_factor times - */ - for (i = 0; i < db->src_factor; i++) - memcpy(dmabuf, dmasample, db->dma_bytes_per_sample); - - userbuf += db->user_bytes_per_sample; - dmabuf += interp_bytes_per_sample; - } - - return num_samples * interp_bytes_per_sample; -} - -/* - * Translates AC'97 ADC samples to user buffer: - * If mono, send only left channel to user buffer. - * If 8 bit samples, cvt from 16 to 8 bit before writing to user buffer. - * If decimating (no VRA), skip over src_factor audio frames. - */ -static int -translate_to_user(struct dmabuf *db, char* userbuf, char* dmabuf, - int dmacount) -{ - int sample, i; - int interp_bytes_per_sample; - int num_samples; - int mono = (db->num_channels == 1); - char usersample[12]; - - if (db->sample_size == 16 && !mono && db->src_factor == 1) { - /* no translation necessary, just copy - */ - if (copy_to_user(userbuf, dmabuf, dmacount)) - return -EFAULT; - return dmacount; - } - - interp_bytes_per_sample = db->dma_bytes_per_sample * db->src_factor; - num_samples = dmacount / interp_bytes_per_sample; - - for (sample = 0; sample < num_samples; sample++) { - for (i = 0; i < db->num_channels; i++) { - if (db->sample_size == 8) - usersample[i] = - S16_TO_U8(*((s16 *) (&dmabuf[i * 2]))); - else - *((s16 *) (&usersample[i * 2])) = - *((s16 *) (&dmabuf[i * 2])); - } - - if (copy_to_user(userbuf, usersample, - db->user_bytes_per_sample)) { - return -EFAULT; - } - - userbuf += db->user_bytes_per_sample; - dmabuf += interp_bytes_per_sample; - } - - return num_samples * interp_bytes_per_sample; -} - -/* - * Copy audio data to/from user buffer from/to dma buffer, taking care - * that we wrap when reading/writing the dma buffer. Returns actual byte - * count written to or read from the dma buffer. - */ -static int -copy_dmabuf_user(struct dmabuf *db, char* userbuf, int count, int to_user) -{ - char *bufptr = to_user ? db->nextOut : db->nextIn; - char *bufend = db->rawbuf + db->dmasize; - int cnt, ret; - - if (bufptr + count > bufend) { - int partial = (int) (bufend - bufptr); - if (to_user) { - if ((cnt = translate_to_user(db, userbuf, - bufptr, partial)) < 0) - return cnt; - ret = cnt; - if ((cnt = translate_to_user(db, userbuf + partial, - db->rawbuf, - count - partial)) < 0) - return cnt; - ret += cnt; - } else { - if ((cnt = translate_from_user(db, bufptr, userbuf, - partial)) < 0) - return cnt; - ret = cnt; - if ((cnt = translate_from_user(db, db->rawbuf, - userbuf + partial, - count - partial)) < 0) - return cnt; - ret += cnt; - } - } else { - if (to_user) - ret = translate_to_user(db, userbuf, bufptr, count); - else - ret = translate_from_user(db, bufptr, userbuf, count); - } - - return ret; -} - - -static ssize_t -au1550_read(struct file *file, char *buffer, size_t count, loff_t *ppos) -{ - struct au1550_state *s = file->private_data; - struct dmabuf *db = &s->dma_adc; - DECLARE_WAITQUEUE(wait, current); - ssize_t ret; - unsigned long flags; - int cnt, usercnt, avail; - - if (db->mapped) - return -ENXIO; - if (!access_ok(VERIFY_WRITE, buffer, count)) - return -EFAULT; - ret = 0; - - count *= db->cnt_factor; - - mutex_lock(&s->sem); - add_wait_queue(&db->wait, &wait); - - while (count > 0) { - /* wait for samples in ADC dma buffer - */ - do { - spin_lock_irqsave(&s->lock, flags); - if (db->stopped) - start_adc(s); - avail = db->count; - if (avail <= 0) - __set_current_state(TASK_INTERRUPTIBLE); - spin_unlock_irqrestore(&s->lock, flags); - if (avail <= 0) { - if (file->f_flags & O_NONBLOCK) { - if (!ret) - ret = -EAGAIN; - goto out; - } - mutex_unlock(&s->sem); - schedule(); - if (signal_pending(current)) { - if (!ret) - ret = -ERESTARTSYS; - goto out2; - } - mutex_lock(&s->sem); - } - } while (avail <= 0); - - /* copy from nextOut to user - */ - if ((cnt = copy_dmabuf_user(db, buffer, - count > avail ? - avail : count, 1)) < 0) { - if (!ret) - ret = -EFAULT; - goto out; - } - - spin_lock_irqsave(&s->lock, flags); - db->count -= cnt; - db->nextOut += cnt; - if (db->nextOut >= db->rawbuf + db->dmasize) - db->nextOut -= db->dmasize; - spin_unlock_irqrestore(&s->lock, flags); - - count -= cnt; - usercnt = cnt / db->cnt_factor; - buffer += usercnt; - ret += usercnt; - } /* while (count > 0) */ - -out: - mutex_unlock(&s->sem); -out2: - remove_wait_queue(&db->wait, &wait); - set_current_state(TASK_RUNNING); - return ret; -} - -static ssize_t -au1550_write(struct file *file, const char *buffer, size_t count, loff_t * ppos) -{ - struct au1550_state *s = file->private_data; - struct dmabuf *db = &s->dma_dac; - DECLARE_WAITQUEUE(wait, current); - ssize_t ret = 0; - unsigned long flags; - int cnt, usercnt, avail; - - pr_debug("write: count=%d\n", count); - - if (db->mapped) - return -ENXIO; - if (!access_ok(VERIFY_READ, buffer, count)) - return -EFAULT; - - count *= db->cnt_factor; - - mutex_lock(&s->sem); - add_wait_queue(&db->wait, &wait); - - while (count > 0) { - /* wait for space in playback buffer - */ - do { - spin_lock_irqsave(&s->lock, flags); - avail = (int) db->dmasize - db->count; - if (avail <= 0) - __set_current_state(TASK_INTERRUPTIBLE); - spin_unlock_irqrestore(&s->lock, flags); - if (avail <= 0) { - if (file->f_flags & O_NONBLOCK) { - if (!ret) - ret = -EAGAIN; - goto out; - } - mutex_unlock(&s->sem); - schedule(); - if (signal_pending(current)) { - if (!ret) - ret = -ERESTARTSYS; - goto out2; - } - mutex_lock(&s->sem); - } - } while (avail <= 0); - - /* copy from user to nextIn - */ - if ((cnt = copy_dmabuf_user(db, (char *) buffer, - count > avail ? - avail : count, 0)) < 0) { - if (!ret) - ret = -EFAULT; - goto out; - } - - spin_lock_irqsave(&s->lock, flags); - db->count += cnt; - db->nextIn += cnt; - if (db->nextIn >= db->rawbuf + db->dmasize) - db->nextIn -= db->dmasize; - - /* If the data is available, we want to keep two buffers - * on the dma queue. If the queue count reaches zero, - * we know the dma has stopped. - */ - while ((db->dma_qcount < 2) && (db->count >= db->fragsize)) { - if (au1xxx_dbdma_put_source(db->dmanr, - virt_to_phys(db->nextOut), db->fragsize, - DDMA_FLAGS_IE) == 0) { - err("qcount < 2 and no ring room!"); - } - db->nextOut += db->fragsize; - if (db->nextOut >= db->rawbuf + db->dmasize) - db->nextOut -= db->dmasize; - db->total_bytes += db->dma_fragsize; - if (db->dma_qcount == 0) - start_dac(s); - db->dma_qcount++; - } - spin_unlock_irqrestore(&s->lock, flags); - - count -= cnt; - usercnt = cnt / db->cnt_factor; - buffer += usercnt; - ret += usercnt; - } /* while (count > 0) */ - -out: - mutex_unlock(&s->sem); -out2: - remove_wait_queue(&db->wait, &wait); - set_current_state(TASK_RUNNING); - return ret; -} - - -/* No kernel lock - we have our own spinlock */ -static unsigned int -au1550_poll(struct file *file, struct poll_table_struct *wait) -{ - struct au1550_state *s = file->private_data; - unsigned long flags; - unsigned int mask = 0; - - if (file->f_mode & FMODE_WRITE) { - if (!s->dma_dac.ready) - return 0; - poll_wait(file, &s->dma_dac.wait, wait); - } - if (file->f_mode & FMODE_READ) { - if (!s->dma_adc.ready) - return 0; - poll_wait(file, &s->dma_adc.wait, wait); - } - - spin_lock_irqsave(&s->lock, flags); - - if (file->f_mode & FMODE_READ) { - if (s->dma_adc.count >= (signed)s->dma_adc.dma_fragsize) - mask |= POLLIN | POLLRDNORM; - } - if (file->f_mode & FMODE_WRITE) { - if (s->dma_dac.mapped) { - if (s->dma_dac.count >= - (signed)s->dma_dac.dma_fragsize) - mask |= POLLOUT | POLLWRNORM; - } else { - if ((signed) s->dma_dac.dmasize >= - s->dma_dac.count + (signed)s->dma_dac.dma_fragsize) - mask |= POLLOUT | POLLWRNORM; - } - } - spin_unlock_irqrestore(&s->lock, flags); - return mask; -} - -static int -au1550_mmap(struct file *file, struct vm_area_struct *vma) -{ - struct au1550_state *s = file->private_data; - struct dmabuf *db; - unsigned long size; - int ret = 0; - - mutex_lock(&au1550_ac97_mutex); - mutex_lock(&s->sem); - if (vma->vm_flags & VM_WRITE) - db = &s->dma_dac; - else if (vma->vm_flags & VM_READ) - db = &s->dma_adc; - else { - ret = -EINVAL; - goto out; - } - if (vma->vm_pgoff != 0) { - ret = -EINVAL; - goto out; - } - size = vma->vm_end - vma->vm_start; - if (size > (PAGE_SIZE << db->buforder)) { - ret = -EINVAL; - goto out; - } - if (remap_pfn_range(vma, vma->vm_start, page_to_pfn(virt_to_page(db->rawbuf)), - size, vma->vm_page_prot)) { - ret = -EAGAIN; - goto out; - } - vma->vm_flags &= ~VM_IO; - db->mapped = 1; -out: - mutex_unlock(&s->sem); - mutex_unlock(&au1550_ac97_mutex); - return ret; -} - -#ifdef DEBUG -static struct ioctl_str_t { - unsigned int cmd; - const char *str; -} ioctl_str[] = { - {SNDCTL_DSP_RESET, "SNDCTL_DSP_RESET"}, - {SNDCTL_DSP_SYNC, "SNDCTL_DSP_SYNC"}, - {SNDCTL_DSP_SPEED, "SNDCTL_DSP_SPEED"}, - {SNDCTL_DSP_STEREO, "SNDCTL_DSP_STEREO"}, - {SNDCTL_DSP_GETBLKSIZE, "SNDCTL_DSP_GETBLKSIZE"}, - {SNDCTL_DSP_SAMPLESIZE, "SNDCTL_DSP_SAMPLESIZE"}, - {SNDCTL_DSP_CHANNELS, "SNDCTL_DSP_CHANNELS"}, - {SOUND_PCM_WRITE_CHANNELS, "SOUND_PCM_WRITE_CHANNELS"}, - {SOUND_PCM_WRITE_FILTER, "SOUND_PCM_WRITE_FILTER"}, - {SNDCTL_DSP_POST, "SNDCTL_DSP_POST"}, - {SNDCTL_DSP_SUBDIVIDE, "SNDCTL_DSP_SUBDIVIDE"}, - {SNDCTL_DSP_SETFRAGMENT, "SNDCTL_DSP_SETFRAGMENT"}, - {SNDCTL_DSP_GETFMTS, "SNDCTL_DSP_GETFMTS"}, - {SNDCTL_DSP_SETFMT, "SNDCTL_DSP_SETFMT"}, - {SNDCTL_DSP_GETOSPACE, "SNDCTL_DSP_GETOSPACE"}, - {SNDCTL_DSP_GETISPACE, "SNDCTL_DSP_GETISPACE"}, - {SNDCTL_DSP_NONBLOCK, "SNDCTL_DSP_NONBLOCK"}, - {SNDCTL_DSP_GETCAPS, "SNDCTL_DSP_GETCAPS"}, - {SNDCTL_DSP_GETTRIGGER, "SNDCTL_DSP_GETTRIGGER"}, - {SNDCTL_DSP_SETTRIGGER, "SNDCTL_DSP_SETTRIGGER"}, - {SNDCTL_DSP_GETIPTR, "SNDCTL_DSP_GETIPTR"}, - {SNDCTL_DSP_GETOPTR, "SNDCTL_DSP_GETOPTR"}, - {SNDCTL_DSP_MAPINBUF, "SNDCTL_DSP_MAPINBUF"}, - {SNDCTL_DSP_MAPOUTBUF, "SNDCTL_DSP_MAPOUTBUF"}, - {SNDCTL_DSP_SETSYNCRO, "SNDCTL_DSP_SETSYNCRO"}, - {SNDCTL_DSP_SETDUPLEX, "SNDCTL_DSP_SETDUPLEX"}, - {SNDCTL_DSP_GETODELAY, "SNDCTL_DSP_GETODELAY"}, - {SNDCTL_DSP_GETCHANNELMASK, "SNDCTL_DSP_GETCHANNELMASK"}, - {SNDCTL_DSP_BIND_CHANNEL, "SNDCTL_DSP_BIND_CHANNEL"}, - {OSS_GETVERSION, "OSS_GETVERSION"}, - {SOUND_PCM_READ_RATE, "SOUND_PCM_READ_RATE"}, - {SOUND_PCM_READ_CHANNELS, "SOUND_PCM_READ_CHANNELS"}, - {SOUND_PCM_READ_BITS, "SOUND_PCM_READ_BITS"}, - {SOUND_PCM_READ_FILTER, "SOUND_PCM_READ_FILTER"} -}; -#endif - -static int -dma_count_done(struct dmabuf *db) -{ - if (db->stopped) - return 0; - - return db->dma_fragsize - au1xxx_get_dma_residue(db->dmanr); -} - - -static int -au1550_ioctl(struct file *file, unsigned int cmd, unsigned long arg) -{ - struct au1550_state *s = file->private_data; - unsigned long flags; - audio_buf_info abinfo; - count_info cinfo; - int count; - int val, mapped, ret, diff; - - mapped = ((file->f_mode & FMODE_WRITE) && s->dma_dac.mapped) || - ((file->f_mode & FMODE_READ) && s->dma_adc.mapped); - -#ifdef DEBUG - for (count = 0; count < ARRAY_SIZE(ioctl_str); count++) { - if (ioctl_str[count].cmd == cmd) - break; - } - if (count < ARRAY_SIZE(ioctl_str)) - pr_debug("ioctl %s, arg=0x%lxn", ioctl_str[count].str, arg); - else - pr_debug("ioctl 0x%x unknown, arg=0x%lx\n", cmd, arg); -#endif - - switch (cmd) { - case OSS_GETVERSION: - return put_user(SOUND_VERSION, (int *) arg); - - case SNDCTL_DSP_SYNC: - if (file->f_mode & FMODE_WRITE) - return drain_dac(s, file->f_flags & O_NONBLOCK); - return 0; - - case SNDCTL_DSP_SETDUPLEX: - return 0; - - case SNDCTL_DSP_GETCAPS: - return put_user(DSP_CAP_DUPLEX | DSP_CAP_REALTIME | - DSP_CAP_TRIGGER | DSP_CAP_MMAP, (int *)arg); - - case SNDCTL_DSP_RESET: - if (file->f_mode & FMODE_WRITE) { - stop_dac(s); - synchronize_irq(); - s->dma_dac.count = s->dma_dac.total_bytes = 0; - s->dma_dac.nextIn = s->dma_dac.nextOut = - s->dma_dac.rawbuf; - } - if (file->f_mode & FMODE_READ) { - stop_adc(s); - synchronize_irq(); - s->dma_adc.count = s->dma_adc.total_bytes = 0; - s->dma_adc.nextIn = s->dma_adc.nextOut = - s->dma_adc.rawbuf; - } - return 0; - - case SNDCTL_DSP_SPEED: - if (get_user(val, (int *) arg)) - return -EFAULT; - if (val >= 0) { - if (file->f_mode & FMODE_READ) { - stop_adc(s); - set_adc_rate(s, val); - } - if (file->f_mode & FMODE_WRITE) { - stop_dac(s); - set_dac_rate(s, val); - } - if (s->open_mode & FMODE_READ) - if ((ret = prog_dmabuf_adc(s))) - return ret; - if (s->open_mode & FMODE_WRITE) - if ((ret = prog_dmabuf_dac(s))) - return ret; - } - return put_user((file->f_mode & FMODE_READ) ? - s->dma_adc.sample_rate : - s->dma_dac.sample_rate, - (int *)arg); - - case SNDCTL_DSP_STEREO: - if (get_user(val, (int *) arg)) - return -EFAULT; - if (file->f_mode & FMODE_READ) { - stop_adc(s); - s->dma_adc.num_channels = val ? 2 : 1; - if ((ret = prog_dmabuf_adc(s))) - return ret; - } - if (file->f_mode & FMODE_WRITE) { - stop_dac(s); - s->dma_dac.num_channels = val ? 2 : 1; - if (s->codec_ext_caps & AC97_EXT_DACS) { - /* disable surround and center/lfe in AC'97 - */ - u16 ext_stat = rdcodec(s->codec, - AC97_EXTENDED_STATUS); - wrcodec(s->codec, AC97_EXTENDED_STATUS, - ext_stat | (AC97_EXTSTAT_PRI | - AC97_EXTSTAT_PRJ | - AC97_EXTSTAT_PRK)); - } - if ((ret = prog_dmabuf_dac(s))) - return ret; - } - return 0; - - case SNDCTL_DSP_CHANNELS: - if (get_user(val, (int *) arg)) - return -EFAULT; - if (val != 0) { - if (file->f_mode & FMODE_READ) { - if (val < 0 || val > 2) - return -EINVAL; - stop_adc(s); - s->dma_adc.num_channels = val; - if ((ret = prog_dmabuf_adc(s))) - return ret; - } - if (file->f_mode & FMODE_WRITE) { - switch (val) { - case 1: - case 2: - break; - case 3: - case 5: - return -EINVAL; - case 4: - if (!(s->codec_ext_caps & - AC97_EXTID_SDAC)) - return -EINVAL; - break; - case 6: - if ((s->codec_ext_caps & - AC97_EXT_DACS) != AC97_EXT_DACS) - return -EINVAL; - break; - default: - return -EINVAL; - } - - stop_dac(s); - if (val <= 2 && - (s->codec_ext_caps & AC97_EXT_DACS)) { - /* disable surround and center/lfe - * channels in AC'97 - */ - u16 ext_stat = - rdcodec(s->codec, - AC97_EXTENDED_STATUS); - wrcodec(s->codec, - AC97_EXTENDED_STATUS, - ext_stat | (AC97_EXTSTAT_PRI | - AC97_EXTSTAT_PRJ | - AC97_EXTSTAT_PRK)); - } else if (val >= 4) { - /* enable surround, center/lfe - * channels in AC'97 - */ - u16 ext_stat = - rdcodec(s->codec, - AC97_EXTENDED_STATUS); - ext_stat &= ~AC97_EXTSTAT_PRJ; - if (val == 6) - ext_stat &= - ~(AC97_EXTSTAT_PRI | - AC97_EXTSTAT_PRK); - wrcodec(s->codec, - AC97_EXTENDED_STATUS, - ext_stat); - } - - s->dma_dac.num_channels = val; - if ((ret = prog_dmabuf_dac(s))) - return ret; - } - } - return put_user(val, (int *) arg); - - case SNDCTL_DSP_GETFMTS: /* Returns a mask */ - return put_user(AFMT_S16_LE | AFMT_U8, (int *) arg); - - case SNDCTL_DSP_SETFMT: /* Selects ONE fmt */ - if (get_user(val, (int *) arg)) - return -EFAULT; - if (val != AFMT_QUERY) { - if (file->f_mode & FMODE_READ) { - stop_adc(s); - if (val == AFMT_S16_LE) - s->dma_adc.sample_size = 16; - else { - val = AFMT_U8; - s->dma_adc.sample_size = 8; - } - if ((ret = prog_dmabuf_adc(s))) - return ret; - } - if (file->f_mode & FMODE_WRITE) { - stop_dac(s); - if (val == AFMT_S16_LE) - s->dma_dac.sample_size = 16; - else { - val = AFMT_U8; - s->dma_dac.sample_size = 8; - } - if ((ret = prog_dmabuf_dac(s))) - return ret; - } - } else { - if (file->f_mode & FMODE_READ) - val = (s->dma_adc.sample_size == 16) ? - AFMT_S16_LE : AFMT_U8; - else - val = (s->dma_dac.sample_size == 16) ? - AFMT_S16_LE : AFMT_U8; - } - return put_user(val, (int *) arg); - - case SNDCTL_DSP_POST: - return 0; - - case SNDCTL_DSP_GETTRIGGER: - val = 0; - spin_lock_irqsave(&s->lock, flags); - if (file->f_mode & FMODE_READ && !s->dma_adc.stopped) - val |= PCM_ENABLE_INPUT; - if (file->f_mode & FMODE_WRITE && !s->dma_dac.stopped) - val |= PCM_ENABLE_OUTPUT; - spin_unlock_irqrestore(&s->lock, flags); - return put_user(val, (int *) arg); - - case SNDCTL_DSP_SETTRIGGER: - if (get_user(val, (int *) arg)) - return -EFAULT; - if (file->f_mode & FMODE_READ) { - if (val & PCM_ENABLE_INPUT) { - spin_lock_irqsave(&s->lock, flags); - start_adc(s); - spin_unlock_irqrestore(&s->lock, flags); - } else - stop_adc(s); - } - if (file->f_mode & FMODE_WRITE) { - if (val & PCM_ENABLE_OUTPUT) { - spin_lock_irqsave(&s->lock, flags); - start_dac(s); - spin_unlock_irqrestore(&s->lock, flags); - } else - stop_dac(s); - } - return 0; - - case SNDCTL_DSP_GETOSPACE: - if (!(file->f_mode & FMODE_WRITE)) - return -EINVAL; - abinfo.fragsize = s->dma_dac.fragsize; - spin_lock_irqsave(&s->lock, flags); - count = s->dma_dac.count; - count -= dma_count_done(&s->dma_dac); - spin_unlock_irqrestore(&s->lock, flags); - if (count < 0) - count = 0; - abinfo.bytes = (s->dma_dac.dmasize - count) / - s->dma_dac.cnt_factor; - abinfo.fragstotal = s->dma_dac.numfrag; - abinfo.fragments = abinfo.bytes >> s->dma_dac.fragshift; - pr_debug("ioctl SNDCTL_DSP_GETOSPACE: bytes=%d, fragments=%d\n", abinfo.bytes, abinfo.fragments); - return copy_to_user((void *) arg, &abinfo, - sizeof(abinfo)) ? -EFAULT : 0; - - case SNDCTL_DSP_GETISPACE: - if (!(file->f_mode & FMODE_READ)) - return -EINVAL; - abinfo.fragsize = s->dma_adc.fragsize; - spin_lock_irqsave(&s->lock, flags); - count = s->dma_adc.count; - count += dma_count_done(&s->dma_adc); - spin_unlock_irqrestore(&s->lock, flags); - if (count < 0) - count = 0; - abinfo.bytes = count / s->dma_adc.cnt_factor; - abinfo.fragstotal = s->dma_adc.numfrag; - abinfo.fragments = abinfo.bytes >> s->dma_adc.fragshift; - return copy_to_user((void *) arg, &abinfo, - sizeof(abinfo)) ? -EFAULT : 0; - - case SNDCTL_DSP_NONBLOCK: - spin_lock(&file->f_lock); - file->f_flags |= O_NONBLOCK; - spin_unlock(&file->f_lock); - return 0; - - case SNDCTL_DSP_GETODELAY: - if (!(file->f_mode & FMODE_WRITE)) - return -EINVAL; - spin_lock_irqsave(&s->lock, flags); - count = s->dma_dac.count; - count -= dma_count_done(&s->dma_dac); - spin_unlock_irqrestore(&s->lock, flags); - if (count < 0) - count = 0; - count /= s->dma_dac.cnt_factor; - return put_user(count, (int *) arg); - - case SNDCTL_DSP_GETIPTR: - if (!(file->f_mode & FMODE_READ)) - return -EINVAL; - spin_lock_irqsave(&s->lock, flags); - cinfo.bytes = s->dma_adc.total_bytes; - count = s->dma_adc.count; - if (!s->dma_adc.stopped) { - diff = dma_count_done(&s->dma_adc); - count += diff; - cinfo.bytes += diff; - cinfo.ptr = virt_to_phys(s->dma_adc.nextIn) + diff - - virt_to_phys(s->dma_adc.rawbuf); - } else - cinfo.ptr = virt_to_phys(s->dma_adc.nextIn) - - virt_to_phys(s->dma_adc.rawbuf); - if (s->dma_adc.mapped) - s->dma_adc.count &= (s->dma_adc.dma_fragsize-1); - spin_unlock_irqrestore(&s->lock, flags); - if (count < 0) - count = 0; - cinfo.blocks = count >> s->dma_adc.fragshift; - return copy_to_user((void *) arg, &cinfo, sizeof(cinfo)); - - case SNDCTL_DSP_GETOPTR: - if (!(file->f_mode & FMODE_READ)) - return -EINVAL; - spin_lock_irqsave(&s->lock, flags); - cinfo.bytes = s->dma_dac.total_bytes; - count = s->dma_dac.count; - if (!s->dma_dac.stopped) { - diff = dma_count_done(&s->dma_dac); - count -= diff; - cinfo.bytes += diff; - cinfo.ptr = virt_to_phys(s->dma_dac.nextOut) + diff - - virt_to_phys(s->dma_dac.rawbuf); - } else - cinfo.ptr = virt_to_phys(s->dma_dac.nextOut) - - virt_to_phys(s->dma_dac.rawbuf); - if (s->dma_dac.mapped) - s->dma_dac.count &= (s->dma_dac.dma_fragsize-1); - spin_unlock_irqrestore(&s->lock, flags); - if (count < 0) - count = 0; - cinfo.blocks = count >> s->dma_dac.fragshift; - return copy_to_user((void *) arg, &cinfo, sizeof(cinfo)); - - case SNDCTL_DSP_GETBLKSIZE: - if (file->f_mode & FMODE_WRITE) - return put_user(s->dma_dac.fragsize, (int *) arg); - else - return put_user(s->dma_adc.fragsize, (int *) arg); - - case SNDCTL_DSP_SETFRAGMENT: - if (get_user(val, (int *) arg)) - return -EFAULT; - if (file->f_mode & FMODE_READ) { - stop_adc(s); - s->dma_adc.ossfragshift = val & 0xffff; - s->dma_adc.ossmaxfrags = (val >> 16) & 0xffff; - if (s->dma_adc.ossfragshift < 4) - s->dma_adc.ossfragshift = 4; - if (s->dma_adc.ossfragshift > 15) - s->dma_adc.ossfragshift = 15; - if (s->dma_adc.ossmaxfrags < 4) - s->dma_adc.ossmaxfrags = 4; - if ((ret = prog_dmabuf_adc(s))) - return ret; - } - if (file->f_mode & FMODE_WRITE) { - stop_dac(s); - s->dma_dac.ossfragshift = val & 0xffff; - s->dma_dac.ossmaxfrags = (val >> 16) & 0xffff; - if (s->dma_dac.ossfragshift < 4) - s->dma_dac.ossfragshift = 4; - if (s->dma_dac.ossfragshift > 15) - s->dma_dac.ossfragshift = 15; - if (s->dma_dac.ossmaxfrags < 4) - s->dma_dac.ossmaxfrags = 4; - if ((ret = prog_dmabuf_dac(s))) - return ret; - } - return 0; - - case SNDCTL_DSP_SUBDIVIDE: - if ((file->f_mode & FMODE_READ && s->dma_adc.subdivision) || - (file->f_mode & FMODE_WRITE && s->dma_dac.subdivision)) - return -EINVAL; - if (get_user(val, (int *) arg)) - return -EFAULT; - if (val != 1 && val != 2 && val != 4) - return -EINVAL; - if (file->f_mode & FMODE_READ) { - stop_adc(s); - s->dma_adc.subdivision = val; - if ((ret = prog_dmabuf_adc(s))) - return ret; - } - if (file->f_mode & FMODE_WRITE) { - stop_dac(s); - s->dma_dac.subdivision = val; - if ((ret = prog_dmabuf_dac(s))) - return ret; - } - return 0; - - case SOUND_PCM_READ_RATE: - return put_user((file->f_mode & FMODE_READ) ? - s->dma_adc.sample_rate : - s->dma_dac.sample_rate, - (int *)arg); - - case SOUND_PCM_READ_CHANNELS: - if (file->f_mode & FMODE_READ) - return put_user(s->dma_adc.num_channels, (int *)arg); - else - return put_user(s->dma_dac.num_channels, (int *)arg); - - case SOUND_PCM_READ_BITS: - if (file->f_mode & FMODE_READ) - return put_user(s->dma_adc.sample_size, (int *)arg); - else - return put_user(s->dma_dac.sample_size, (int *)arg); - - case SOUND_PCM_WRITE_FILTER: - case SNDCTL_DSP_SETSYNCRO: - case SOUND_PCM_READ_FILTER: - return -EINVAL; - } - - return mixdev_ioctl(s->codec, cmd, arg); -} - -static long -au1550_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg) -{ - int ret; - - mutex_lock(&au1550_ac97_mutex); - ret = au1550_ioctl(file, cmd, arg); - mutex_unlock(&au1550_ac97_mutex); - - return ret; -} - -static int -au1550_open(struct inode *inode, struct file *file) -{ - int minor = MINOR(inode->i_rdev); - DECLARE_WAITQUEUE(wait, current); - struct au1550_state *s = &au1550_state; - int ret; - -#ifdef DEBUG - if (file->f_flags & O_NONBLOCK) - pr_debug("open: non-blocking\n"); - else - pr_debug("open: blocking\n"); -#endif - - file->private_data = s; - mutex_lock(&au1550_ac97_mutex); - /* wait for device to become free */ - mutex_lock(&s->open_mutex); - while (s->open_mode & file->f_mode) { - ret = -EBUSY; - if (file->f_flags & O_NONBLOCK) - goto out; - add_wait_queue(&s->open_wait, &wait); - __set_current_state(TASK_INTERRUPTIBLE); - mutex_unlock(&s->open_mutex); - schedule(); - remove_wait_queue(&s->open_wait, &wait); - set_current_state(TASK_RUNNING); - ret = -ERESTARTSYS; - if (signal_pending(current)) - goto out2; - mutex_lock(&s->open_mutex); - } - - stop_dac(s); - stop_adc(s); - - if (file->f_mode & FMODE_READ) { - s->dma_adc.ossfragshift = s->dma_adc.ossmaxfrags = - s->dma_adc.subdivision = s->dma_adc.total_bytes = 0; - s->dma_adc.num_channels = 1; - s->dma_adc.sample_size = 8; - set_adc_rate(s, 8000); - if ((minor & 0xf) == SND_DEV_DSP16) - s->dma_adc.sample_size = 16; - } - - if (file->f_mode & FMODE_WRITE) { - s->dma_dac.ossfragshift = s->dma_dac.ossmaxfrags = - s->dma_dac.subdivision = s->dma_dac.total_bytes = 0; - s->dma_dac.num_channels = 1; - s->dma_dac.sample_size = 8; - set_dac_rate(s, 8000); - if ((minor & 0xf) == SND_DEV_DSP16) - s->dma_dac.sample_size = 16; - } - - if (file->f_mode & FMODE_READ) { - if ((ret = prog_dmabuf_adc(s))) - goto out; - } - if (file->f_mode & FMODE_WRITE) { - if ((ret = prog_dmabuf_dac(s))) - goto out; - } - - s->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE); - mutex_init(&s->sem); - ret = 0; -out: - mutex_unlock(&s->open_mutex); -out2: - mutex_unlock(&au1550_ac97_mutex); - return ret; -} - -static int -au1550_release(struct inode *inode, struct file *file) -{ - struct au1550_state *s = file->private_data; - - mutex_lock(&au1550_ac97_mutex); - - if (file->f_mode & FMODE_WRITE) { - mutex_unlock(&au1550_ac97_mutex); - drain_dac(s, file->f_flags & O_NONBLOCK); - mutex_lock(&au1550_ac97_mutex); - } - - mutex_lock(&s->open_mutex); - if (file->f_mode & FMODE_WRITE) { - stop_dac(s); - kfree(s->dma_dac.rawbuf); - s->dma_dac.rawbuf = NULL; - } - if (file->f_mode & FMODE_READ) { - stop_adc(s); - kfree(s->dma_adc.rawbuf); - s->dma_adc.rawbuf = NULL; - } - s->open_mode &= ((~file->f_mode) & (FMODE_READ|FMODE_WRITE)); - mutex_unlock(&s->open_mutex); - wake_up(&s->open_wait); - mutex_unlock(&au1550_ac97_mutex); - return 0; -} - -static /*const */ struct file_operations au1550_audio_fops = { - .owner = THIS_MODULE, - .llseek = au1550_llseek, - .read = au1550_read, - .write = au1550_write, - .poll = au1550_poll, - .unlocked_ioctl = au1550_unlocked_ioctl, - .mmap = au1550_mmap, - .open = au1550_open, - .release = au1550_release, -}; - -MODULE_AUTHOR("Advanced Micro Devices (AMD), dan@embeddededge.com"); -MODULE_DESCRIPTION("Au1550 AC97 Audio Driver"); -MODULE_LICENSE("GPL"); - - -static int __devinit -au1550_probe(void) -{ - struct au1550_state *s = &au1550_state; - int val; - - memset(s, 0, sizeof(struct au1550_state)); - - init_waitqueue_head(&s->dma_adc.wait); - init_waitqueue_head(&s->dma_dac.wait); - init_waitqueue_head(&s->open_wait); - mutex_init(&s->open_mutex); - spin_lock_init(&s->lock); - - s->codec = ac97_alloc_codec(); - if(s->codec == NULL) { - err("Out of memory"); - return -1; - } - s->codec->private_data = s; - s->codec->id = 0; - s->codec->codec_read = rdcodec; - s->codec->codec_write = wrcodec; - s->codec->codec_wait = waitcodec; - - if (!request_mem_region(CPHYSADDR(AC97_PSC_SEL), - 0x30, "Au1550 AC97")) { - err("AC'97 ports in use"); - } - - /* Allocate the DMA Channels - */ - if ((s->dma_dac.dmanr = au1xxx_dbdma_chan_alloc(DBDMA_MEM_CHAN, - DBDMA_AC97_TX_CHAN, dac_dma_interrupt, (void *)s)) == 0) { - err("Can't get DAC DMA"); - goto err_dma1; - } - au1xxx_dbdma_set_devwidth(s->dma_dac.dmanr, 16); - if (au1xxx_dbdma_ring_alloc(s->dma_dac.dmanr, - NUM_DBDMA_DESCRIPTORS) == 0) { - err("Can't get DAC DMA descriptors"); - goto err_dma1; - } - - if ((s->dma_adc.dmanr = au1xxx_dbdma_chan_alloc(DBDMA_AC97_RX_CHAN, - DBDMA_MEM_CHAN, adc_dma_interrupt, (void *)s)) == 0) { - err("Can't get ADC DMA"); - goto err_dma2; - } - au1xxx_dbdma_set_devwidth(s->dma_adc.dmanr, 16); - if (au1xxx_dbdma_ring_alloc(s->dma_adc.dmanr, - NUM_DBDMA_DESCRIPTORS) == 0) { - err("Can't get ADC DMA descriptors"); - goto err_dma2; - } - - pr_info("DAC: DMA%d, ADC: DMA%d", DBDMA_AC97_TX_CHAN, DBDMA_AC97_RX_CHAN); - - /* register devices */ - - if ((s->dev_audio = register_sound_dsp(&au1550_audio_fops, -1)) < 0) - goto err_dev1; - if ((s->codec->dev_mixer = - register_sound_mixer(&au1550_mixer_fops, -1)) < 0) - goto err_dev2; - - /* The GPIO for the appropriate PSC was configured by the - * board specific start up. - * - * configure PSC for AC'97 - */ - au_writel(0, AC97_PSC_CTRL); /* Disable PSC */ - au_sync(); - au_writel((PSC_SEL_CLK_SERCLK | PSC_SEL_PS_AC97MODE), AC97_PSC_SEL); - au_sync(); - - /* cold reset the AC'97 - */ - au_writel(PSC_AC97RST_RST, PSC_AC97RST); - au_sync(); - au1550_delay(10); - au_writel(0, PSC_AC97RST); - au_sync(); - - /* need to delay around 500msec(bleech) to give - some CODECs enough time to wakeup */ - au1550_delay(500); - - /* warm reset the AC'97 to start the bitclk - */ - au_writel(PSC_AC97RST_SNC, PSC_AC97RST); - au_sync(); - udelay(100); - au_writel(0, PSC_AC97RST); - au_sync(); - - /* Enable PSC - */ - au_writel(PSC_CTRL_ENABLE, AC97_PSC_CTRL); - au_sync(); - - /* Wait for PSC ready. - */ - do { - val = au_readl(PSC_AC97STAT); - au_sync(); - } while ((val & PSC_AC97STAT_SR) == 0); - - /* Configure AC97 controller. - * Deep FIFO, 16-bit sample, DMA, make sure DMA matches fifo size. - */ - val = PSC_AC97CFG_SET_LEN(16); - val |= PSC_AC97CFG_RT_FIFO8 | PSC_AC97CFG_TT_FIFO8; - - /* Enable device so we can at least - * talk over the AC-link. - */ - au_writel(val, PSC_AC97CFG); - au_writel(PSC_AC97MSK_ALLMASK, PSC_AC97MSK); - au_sync(); - val |= PSC_AC97CFG_DE_ENABLE; - au_writel(val, PSC_AC97CFG); - au_sync(); - - /* Wait for Device ready. - */ - do { - val = au_readl(PSC_AC97STAT); - au_sync(); - } while ((val & PSC_AC97STAT_DR) == 0); - - /* codec init */ - if (!ac97_probe_codec(s->codec)) - goto err_dev3; - - s->codec_base_caps = rdcodec(s->codec, AC97_RESET); - s->codec_ext_caps = rdcodec(s->codec, AC97_EXTENDED_ID); - pr_info("AC'97 Base/Extended ID = %04x/%04x", - s->codec_base_caps, s->codec_ext_caps); - - if (!(s->codec_ext_caps & AC97_EXTID_VRA)) { - /* codec does not support VRA - */ - s->no_vra = 1; - } else if (!vra) { - /* Boot option says disable VRA - */ - u16 ac97_extstat = rdcodec(s->codec, AC97_EXTENDED_STATUS); - wrcodec(s->codec, AC97_EXTENDED_STATUS, - ac97_extstat & ~AC97_EXTSTAT_VRA); - s->no_vra = 1; - } - if (s->no_vra) - pr_info("no VRA, interpolating and decimating"); - - /* set mic to be the recording source */ - val = SOUND_MASK_MIC; - mixdev_ioctl(s->codec, SOUND_MIXER_WRITE_RECSRC, - (unsigned long) &val); - - return 0; - - err_dev3: - unregister_sound_mixer(s->codec->dev_mixer); - err_dev2: - unregister_sound_dsp(s->dev_audio); - err_dev1: - au1xxx_dbdma_chan_free(s->dma_adc.dmanr); - err_dma2: - au1xxx_dbdma_chan_free(s->dma_dac.dmanr); - err_dma1: - release_mem_region(CPHYSADDR(AC97_PSC_SEL), 0x30); - - ac97_release_codec(s->codec); - return -1; -} - -static void __devinit -au1550_remove(void) -{ - struct au1550_state *s = &au1550_state; - - if (!s) - return; - synchronize_irq(); - au1xxx_dbdma_chan_free(s->dma_adc.dmanr); - au1xxx_dbdma_chan_free(s->dma_dac.dmanr); - release_mem_region(CPHYSADDR(AC97_PSC_SEL), 0x30); - unregister_sound_dsp(s->dev_audio); - unregister_sound_mixer(s->codec->dev_mixer); - ac97_release_codec(s->codec); -} - -static int __init -init_au1550(void) -{ - return au1550_probe(); -} - -static void __exit -cleanup_au1550(void) -{ - au1550_remove(); -} - -module_init(init_au1550); -module_exit(cleanup_au1550); - -#ifndef MODULE - -static int __init -au1550_setup(char *options) -{ - char *this_opt; - - if (!options || !*options) - return 0; - - while ((this_opt = strsep(&options, ","))) { - if (!*this_opt) - continue; - if (!strncmp(this_opt, "vra", 3)) { - vra = 1; - } - } - - return 1; -} - -__setup("au1550_audio=", au1550_setup); - -#endif /* MODULE */ |