dmadbg_dumpregs(fname, line, chan, &state);
}
-#define dbg_showregs(chan) dmadbg_showregs(__FUNCTION__, __LINE__, (chan))
-#define dbg_showchan(chan) dmadbg_showchan(__FUNCTION__, __LINE__, (chan))
+#define dbg_showregs(chan) dmadbg_showregs(__func__, __LINE__, (chan))
+#define dbg_showchan(chan) dmadbg_showchan(__func__, __LINE__, (chan))
#else
#define dbg_showregs(chan) do { } while(0)
#define dbg_showchan(chan) do { } while(0)
if (s3c2410_dma_waitforload(chan, __LINE__) == 0) {
pr_debug("%s: buff not yet loaded, no more todo\n",
- __FUNCTION__);
+ __func__);
} else {
chan->load_state = S3C2410_DMALOAD_1RUNNING;
s3c2410_dma_loadbuffer(chan, chan->next);
return -EINVAL;
pr_debug("%s: id=%p, data=%08x, size=%d\n",
- __FUNCTION__, id, (unsigned int)data, size);
+ __func__, id, (unsigned int)data, size);
buf = kmem_cache_alloc(dma_kmem, GFP_ATOMIC);
if (buf == NULL) {
pr_debug("%s: out of memory (%ld alloc)\n",
- __FUNCTION__, (long)sizeof(*buf));
+ __func__, (long)sizeof(*buf));
return -ENOMEM;
}
- //pr_debug("%s: new buffer %p\n", __FUNCTION__, buf);
+ //pr_debug("%s: new buffer %p\n", __func__, buf);
//dbg_showchan(chan);
buf->next = NULL;
if (chan->curr == NULL) {
/* we've got nothing loaded... */
pr_debug("%s: buffer %p queued onto empty channel\n",
- __FUNCTION__, buf);
+ __func__, buf);
chan->curr = buf;
chan->end = buf;
chan->next = NULL;
} else {
pr_debug("dma%d: %s: buffer %p queued onto non-empty channel\n",
- chan->number, __FUNCTION__, buf);
+ chan->number, __func__, buf);
if (chan->end == NULL)
pr_debug("dma%d: %s: %p not empty, and chan->end==NULL?\n",
- chan->number, __FUNCTION__, chan);
+ chan->number, __func__, chan);
chan->end->next = buf;
chan->end = buf;
}
} else if (chan->state == S3C2410_DMA_IDLE) {
if (chan->flags & S3C2410_DMAF_AUTOSTART) {
- s3c2410_dma_ctrl(chan->number, S3C2410_DMAOP_START);
+ s3c2410_dma_ctrl(chan->number | DMACH_LOW_LEVEL,
+ S3C2410_DMAOP_START);
}
}
if (s3c2410_dma_waitforload(chan, __LINE__) == 0) {
/* flag error? */
printk(KERN_ERR "dma%d: timeout waiting for load (%s)\n",
- chan->number, __FUNCTION__);
+ chan->number, __func__);
return;
}
break;
if (buf->magic != BUF_MAGIC) {
printk(KERN_ERR "dma%d: %s: buf %p incorrect magic\n",
- chan->number, __FUNCTION__, buf);
+ chan->number, __func__, buf);
return IRQ_HANDLED;
}
if (s3c2410_dma_waitforload(chan, __LINE__) == 0) {
/* flag error? */
printk(KERN_ERR "dma%d: timeout waiting for load (%s)\n",
- chan->number, __FUNCTION__);
+ chan->number, __func__);
return IRQ_HANDLED;
}
if (!chan->irq_claimed) {
pr_debug("dma%d: %s : requesting irq %d\n",
- channel, __FUNCTION__, chan->irq);
+ channel, __func__, chan->irq);
chan->irq_claimed = 1;
local_irq_restore(flags);
/* need to setup */
- pr_debug("%s: channel initialised, %p\n", __FUNCTION__, chan);
+ pr_debug("%s: channel initialised, %p\n", __func__, chan);
- return 0;
+ return chan->number | DMACH_LOW_LEVEL;
}
EXPORT_SYMBOL(s3c2410_dma_request);
if (chan->state != S3C2410_DMA_IDLE) {
pr_debug("%s: need to stop dma channel %p\n",
- __FUNCTION__, chan);
+ __func__, chan);
/* possibly flush the channel */
s3c2410_dma_ctrl(channel, S3C2410_DMAOP_STOP);
unsigned long flags;
unsigned long tmp;
- pr_debug("%s:\n", __FUNCTION__);
+ pr_debug("%s:\n", __func__);
dbg_showchan(chan);
struct s3c2410_dma_buf *buf, *next;
unsigned long flags;
- pr_debug("%s: chan %p (%d)\n", __FUNCTION__, chan, chan->number);
+ pr_debug("%s: chan %p (%d)\n", __func__, chan, chan->number);
dbg_showchan(chan);
local_irq_save(flags);
if (chan->state != S3C2410_DMA_IDLE) {
- pr_debug("%s: stopping channel...\n", __FUNCTION__ );
+ pr_debug("%s: stopping channel...\n", __func__ );
s3c2410_dma_ctrl(chan->number, S3C2410_DMAOP_STOP);
}
next = buf->next;
pr_debug("%s: free buffer %p, next %p\n",
- __FUNCTION__, buf, buf->next);
+ __func__, buf, buf->next);
s3c2410_dma_buffdone(chan, buf, S3C2410_RES_ABORT);
s3c2410_dma_freebuf(buf);
if (s3c2410_dma_waitforload(chan, __LINE__) == 0) {
pr_debug("%s: buff not yet loaded, no more todo\n",
- __FUNCTION__);
+ __func__);
} else {
chan->load_state = S3C2410_DMALOAD_1RUNNING;
s3c2410_dma_loadbuffer(chan, chan->next);
struct s3c2410_dma_chan *chan = lookup_dma_channel(channel);
pr_debug("%s: chan=%d, xfer_unit=%d, dcon=%08x\n",
- __FUNCTION__, channel, xferunit, dcon);
+ __func__, channel, xferunit, dcon);
if (chan == NULL)
return -EINVAL;
- pr_debug("%s: Initial dcon is %08x\n", __FUNCTION__, dcon);
+ pr_debug("%s: Initial dcon is %08x\n", __func__, dcon);
dcon |= chan->dcon & dma_sel.dcon_mask;
- pr_debug("%s: New dcon is %08x\n", __FUNCTION__, dcon);
+ pr_debug("%s: New dcon is %08x\n", __func__, dcon);
switch (xferunit) {
case 1:
break;
default:
- pr_debug("%s: bad transfer size %d\n", __FUNCTION__, xferunit);
+ pr_debug("%s: bad transfer size %d\n", __func__, xferunit);
return -EINVAL;
}
dcon |= S3C2410_DCON_HWTRIG;
dcon |= S3C2410_DCON_INTREQ;
- pr_debug("%s: dcon now %08x\n", __FUNCTION__, dcon);
+ pr_debug("%s: dcon now %08x\n", __func__, dcon);
chan->dcon = dcon;
chan->xfer_unit = xferunit;
if (chan == NULL)
return -EINVAL;
- pr_debug("%s: chan=%p, flags=%08x\n", __FUNCTION__, chan, flags);
+ pr_debug("%s: chan=%p, flags=%08x\n", __func__, chan, flags);
chan->flags = flags;
if (chan == NULL)
return -EINVAL;
- pr_debug("%s: chan=%p, op rtn=%p\n", __FUNCTION__, chan, rtn);
+ pr_debug("%s: chan=%p, op rtn=%p\n", __func__, chan, rtn);
chan->op_fn = rtn;
if (chan == NULL)
return -EINVAL;
- pr_debug("%s: chan=%p, callback rtn=%p\n", __FUNCTION__, chan, rtn);
+ pr_debug("%s: chan=%p, callback rtn=%p\n", __func__, chan, rtn);
chan->callback_fn = rtn;
return -EINVAL;
pr_debug("%s: source=%d, hwcfg=%08x, devaddr=%08lx\n",
- __FUNCTION__, (int)source, hwcfg, devaddr);
+ __func__, (int)source, hwcfg, devaddr);
chan->source = source;
chan->dev_addr = devaddr;
+ chan->hw_cfg = hwcfg;
switch (source) {
case S3C2410_DMASRC_HW:
/* source is hardware */
pr_debug("%s: hw source, devaddr=%08lx, hwcfg=%d\n",
- __FUNCTION__, devaddr, hwcfg);
+ __func__, devaddr, hwcfg);
dma_wrreg(chan, S3C2410_DMA_DISRCC, hwcfg & 3);
dma_wrreg(chan, S3C2410_DMA_DISRC, devaddr);
dma_wrreg(chan, S3C2410_DMA_DIDSTC, (0<<1) | (0<<0));
chan->addr_reg = dma_regaddr(chan, S3C2410_DMA_DIDST);
- return 0;
+ break;
case S3C2410_DMASRC_MEM:
/* source is memory */
- pr_debug( "%s: mem source, devaddr=%08lx, hwcfg=%d\n",
- __FUNCTION__, devaddr, hwcfg);
+ pr_debug("%s: mem source, devaddr=%08lx, hwcfg=%d\n",
+ __func__, devaddr, hwcfg);
dma_wrreg(chan, S3C2410_DMA_DISRCC, (0<<1) | (0<<0));
dma_wrreg(chan, S3C2410_DMA_DIDST, devaddr);
dma_wrreg(chan, S3C2410_DMA_DIDSTC, hwcfg & 3);
chan->addr_reg = dma_regaddr(chan, S3C2410_DMA_DISRC);
- return 0;
+ break;
+
+ default:
+ printk(KERN_ERR "dma%d: invalid source type (%d)\n",
+ channel, source);
+
+ return -EINVAL;
}
- printk(KERN_ERR "dma%d: invalid source type (%d)\n", channel, source);
- return -EINVAL;
+ if (dma_sel.direction != NULL)
+ (dma_sel.direction)(chan, chan->map, source);
+
+ return 0;
}
EXPORT_SYMBOL(s3c2410_dma_devconfig);
EXPORT_SYMBOL(s3c2410_dma_getposition);
+static struct s3c2410_dma_chan *to_dma_chan(struct sys_device *dev)
+{
+ return container_of(dev, struct s3c2410_dma_chan, dev);
+}
/* system device class */
static int s3c2410_dma_suspend(struct sys_device *dev, pm_message_t state)
{
- struct s3c2410_dma_chan *cp = container_of(dev, struct s3c2410_dma_chan, dev);
+ struct s3c2410_dma_chan *cp = to_dma_chan(dev);
printk(KERN_DEBUG "suspending dma channel %d\n", cp->number);
static int s3c2410_dma_resume(struct sys_device *dev)
{
+ struct s3c2410_dma_chan *cp = to_dma_chan(dev);
+ unsigned int no = cp->number | DMACH_LOW_LEVEL;
+
+ /* restore channel's hardware configuration */
+
+ if (!cp->in_use)
+ return 0;
+
+ printk(KERN_INFO "dma%d: restoring configuration\n", cp->number);
+
+ s3c2410_dma_config(no, cp->xfer_unit, cp->dcon);
+ s3c2410_dma_devconfig(no, cp->source, cp->hw_cfg, cp->dev_addr);
+
+ /* re-select the dma source for this channel */
+
+ if (cp->map != NULL)
+ dma_sel.select(cp, cp->map);
+
return 0;
}
#endif /* CONFIG_PM */
struct sysdev_class dma_sysclass = {
- set_kset_name("s3c24xx-dma"),
+ .name = "s3c24xx-dma",
.suspend = s3c2410_dma_suspend,
.resume = s3c2410_dma_resume,
};
/* kmem cache implementation */
-static void s3c2410_dma_cache_ctor(void *p, struct kmem_cache *c, unsigned long f)
+static void s3c2410_dma_cache_ctor(struct kmem_cache *c, void *p)
{
memset(p, 0, sizeof(struct s3c2410_dma_buf));
}
found:
dmach = &s3c2410_chans[ch];
+ dmach->map = ch_map;
dma_chan_map[channel] = dmach;
/* select the channel */