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authorDavid S. Miller <davem@davemloft.net>2012-04-10 14:30:45 -0400
committerDavid S. Miller <davem@davemloft.net>2012-04-10 14:30:45 -0400
commit06eb4eafbdc0796d741d139a44f1253278da8611 (patch)
treefbdb44317130c371928154c9e6903e699fe2b995 /drivers/dma/amba-pl08x.c
parent32ed53b83ea5ec26a4dba90e18f5e0ff6c71eb48 (diff)
parentf68e556e23d1a4176b563bcb25d8baf2c5313f91 (diff)
downloadblackbird-obmc-linux-06eb4eafbdc0796d741d139a44f1253278da8611.tar.gz
blackbird-obmc-linux-06eb4eafbdc0796d741d139a44f1253278da8611.zip
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'drivers/dma/amba-pl08x.c')
-rw-r--r--drivers/dma/amba-pl08x.c46
1 files changed, 16 insertions, 30 deletions
diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
index 8a281584458b..c301a8ec31aa 100644
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c
@@ -85,6 +85,8 @@
#include <linux/slab.h>
#include <asm/hardware/pl080.h>
+#include "dmaengine.h"
+
#define DRIVER_NAME "pl08xdmac"
static struct amba_driver pl08x_amba_driver;
@@ -649,7 +651,7 @@ static int pl08x_fill_llis_for_desc(struct pl08x_driver_data *pl08x,
}
if ((bd.srcbus.addr % bd.srcbus.buswidth) ||
- (bd.srcbus.addr % bd.srcbus.buswidth)) {
+ (bd.dstbus.addr % bd.dstbus.buswidth)) {
dev_err(&pl08x->adev->dev,
"%s src & dst address must be aligned to src"
" & dst width if peripheral is flow controller",
@@ -919,13 +921,10 @@ static dma_cookie_t pl08x_tx_submit(struct dma_async_tx_descriptor *tx)
struct pl08x_dma_chan *plchan = to_pl08x_chan(tx->chan);
struct pl08x_txd *txd = to_pl08x_txd(tx);
unsigned long flags;
+ dma_cookie_t cookie;
spin_lock_irqsave(&plchan->lock, flags);
-
- plchan->chan.cookie += 1;
- if (plchan->chan.cookie < 0)
- plchan->chan.cookie = 1;
- tx->cookie = plchan->chan.cookie;
+ cookie = dma_cookie_assign(tx);
/* Put this onto the pending list */
list_add_tail(&txd->node, &plchan->pend_list);
@@ -945,7 +944,7 @@ static dma_cookie_t pl08x_tx_submit(struct dma_async_tx_descriptor *tx)
spin_unlock_irqrestore(&plchan->lock, flags);
- return tx->cookie;
+ return cookie;
}
static struct dma_async_tx_descriptor *pl08x_prep_dma_interrupt(
@@ -965,31 +964,17 @@ static enum dma_status pl08x_dma_tx_status(struct dma_chan *chan,
dma_cookie_t cookie, struct dma_tx_state *txstate)
{
struct pl08x_dma_chan *plchan = to_pl08x_chan(chan);
- dma_cookie_t last_used;
- dma_cookie_t last_complete;
enum dma_status ret;
- u32 bytesleft = 0;
- last_used = plchan->chan.cookie;
- last_complete = plchan->lc;
-
- ret = dma_async_is_complete(cookie, last_complete, last_used);
- if (ret == DMA_SUCCESS) {
- dma_set_tx_state(txstate, last_complete, last_used, 0);
+ ret = dma_cookie_status(chan, cookie, txstate);
+ if (ret == DMA_SUCCESS)
return ret;
- }
/*
* This cookie not complete yet
+ * Get number of bytes left in the active transactions and queue
*/
- last_used = plchan->chan.cookie;
- last_complete = plchan->lc;
-
- /* Get number of bytes left in the active transactions and queue */
- bytesleft = pl08x_getbytes_chan(plchan);
-
- dma_set_tx_state(txstate, last_complete, last_used,
- bytesleft);
+ dma_set_residue(txstate, pl08x_getbytes_chan(plchan));
if (plchan->state == PL08X_CHAN_PAUSED)
return DMA_PAUSED;
@@ -1139,6 +1124,8 @@ static int dma_set_runtime_config(struct dma_chan *chan,
cctl |= burst << PL080_CONTROL_SB_SIZE_SHIFT;
cctl |= burst << PL080_CONTROL_DB_SIZE_SHIFT;
+ plchan->device_fc = config->device_fc;
+
if (plchan->runtime_direction == DMA_DEV_TO_MEM) {
plchan->src_addr = config->src_addr;
plchan->src_cctl = pl08x_cctl(cctl) | PL080_CONTROL_DST_INCR |
@@ -1326,7 +1313,7 @@ static struct dma_async_tx_descriptor *pl08x_prep_dma_memcpy(
static struct dma_async_tx_descriptor *pl08x_prep_slave_sg(
struct dma_chan *chan, struct scatterlist *sgl,
unsigned int sg_len, enum dma_transfer_direction direction,
- unsigned long flags)
+ unsigned long flags, void *context)
{
struct pl08x_dma_chan *plchan = to_pl08x_chan(chan);
struct pl08x_driver_data *pl08x = plchan->host;
@@ -1370,7 +1357,7 @@ static struct dma_async_tx_descriptor *pl08x_prep_slave_sg(
return NULL;
}
- if (plchan->cd->device_fc)
+ if (plchan->device_fc)
tmp = (direction == DMA_MEM_TO_DEV) ? PL080_FLOW_MEM2PER_PER :
PL080_FLOW_PER2MEM_PER;
else
@@ -1541,7 +1528,7 @@ static void pl08x_tasklet(unsigned long data)
if (txd) {
/* Update last completed */
- plchan->lc = txd->tx.cookie;
+ dma_cookie_complete(&txd->tx);
}
/* If a new descriptor is queued, set it up plchan->at is NULL here */
@@ -1722,8 +1709,7 @@ static int pl08x_dma_init_virtual_channels(struct pl08x_driver_data *pl08x,
chan->name);
chan->chan.device = dmadev;
- chan->chan.cookie = 0;
- chan->lc = 0;
+ dma_cookie_init(&chan->chan);
spin_lock_init(&chan->lock);
INIT_LIST_HEAD(&chan->pend_list);
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