summaryrefslogtreecommitdiff
path: root/drivers/dma
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/at_hdmac.c3
-rw-r--r--drivers/dma/ep93xx_dma.c4
-rw-r--r--drivers/dma/imx-dma.c2
-rw-r--r--drivers/dma/imx-sdma.c2
-rw-r--r--drivers/dma/mmp_tdma.c2
-rw-r--r--drivers/dma/mxs-dma.c2
-rw-r--r--drivers/dma/omap-dma.c45
-rw-r--r--drivers/dma/pl330.c2
-rw-r--r--drivers/dma/sa11x0-dma.c2
-rw-r--r--drivers/dma/sirf-dma.c2
-rw-r--r--drivers/dma/ste_dma40.c3
-rw-r--r--drivers/dma/tegra20-apb-dma.c2
12 files changed, 51 insertions, 20 deletions
diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index 17d6958342e7..13a02f4425b0 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -852,12 +852,13 @@ atc_dma_cyclic_fill_desc(struct dma_chan *chan, struct at_desc *desc,
* @buf_len: total number of bytes for the entire buffer
* @period_len: number of bytes for each period
* @direction: transfer direction, to or from device
+ * @flags: tx descriptor status flags
* @context: transfer context (ignored)
*/
static struct dma_async_tx_descriptor *
atc_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t buf_addr, size_t buf_len,
size_t period_len, enum dma_transfer_direction direction,
- void *context)
+ unsigned long flags, void *context)
{
struct at_dma_chan *atchan = to_at_dma_chan(chan);
struct at_dma_slave *atslave = chan->private;
diff --git a/drivers/dma/ep93xx_dma.c b/drivers/dma/ep93xx_dma.c
index 64256f644252..bcfde400904f 100644
--- a/drivers/dma/ep93xx_dma.c
+++ b/drivers/dma/ep93xx_dma.c
@@ -1120,6 +1120,7 @@ fail:
* @buf_len: length of the buffer (in bytes)
* @period_len: length of a single period
* @dir: direction of the operation
+ * @flags: tx descriptor status flags
* @context: operation context (ignored)
*
* Prepares a descriptor for cyclic DMA operation. This means that once the
@@ -1133,7 +1134,8 @@ fail:
static struct dma_async_tx_descriptor *
ep93xx_dma_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t dma_addr,
size_t buf_len, size_t period_len,
- enum dma_transfer_direction dir, void *context)
+ enum dma_transfer_direction dir, unsigned long flags,
+ void *context)
{
struct ep93xx_dma_chan *edmac = to_ep93xx_dma_chan(chan);
struct ep93xx_dma_desc *desc, *first;
diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c
index 2a3fab289db0..f11b5b2b1a1c 100644
--- a/drivers/dma/imx-dma.c
+++ b/drivers/dma/imx-dma.c
@@ -801,7 +801,7 @@ static struct dma_async_tx_descriptor *imxdma_prep_slave_sg(
static struct dma_async_tx_descriptor *imxdma_prep_dma_cyclic(
struct dma_chan *chan, dma_addr_t dma_addr, size_t buf_len,
size_t period_len, enum dma_transfer_direction direction,
- void *context)
+ unsigned long flags, void *context)
{
struct imxdma_channel *imxdmac = to_imxdma_chan(chan);
struct imxdma_engine *imxdma = imxdmac->imxdma;
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 1b781d6ac425..c099ca0846f4 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -1012,7 +1012,7 @@ err_out:
static struct dma_async_tx_descriptor *sdma_prep_dma_cyclic(
struct dma_chan *chan, dma_addr_t dma_addr, size_t buf_len,
size_t period_len, enum dma_transfer_direction direction,
- void *context)
+ unsigned long flags, void *context)
{
struct sdma_channel *sdmac = to_sdma_chan(chan);
struct sdma_engine *sdma = sdmac->sdma;
diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c
index 07fa48688ba9..6d9c82e891d7 100644
--- a/drivers/dma/mmp_tdma.c
+++ b/drivers/dma/mmp_tdma.c
@@ -358,7 +358,7 @@ struct mmp_tdma_desc *mmp_tdma_alloc_descriptor(struct mmp_tdma_chan *tdmac)
static struct dma_async_tx_descriptor *mmp_tdma_prep_dma_cyclic(
struct dma_chan *chan, dma_addr_t dma_addr, size_t buf_len,
size_t period_len, enum dma_transfer_direction direction,
- void *context)
+ unsigned long flags, void *context)
{
struct mmp_tdma_chan *tdmac = to_mmp_tdma_chan(chan);
struct mmp_tdma_desc *desc;
diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c
index 7f41b25805fa..734a4eb84d65 100644
--- a/drivers/dma/mxs-dma.c
+++ b/drivers/dma/mxs-dma.c
@@ -531,7 +531,7 @@ err_out:
static struct dma_async_tx_descriptor *mxs_dma_prep_dma_cyclic(
struct dma_chan *chan, dma_addr_t dma_addr, size_t buf_len,
size_t period_len, enum dma_transfer_direction direction,
- void *context)
+ unsigned long flags, void *context)
{
struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
diff --git a/drivers/dma/omap-dma.c b/drivers/dma/omap-dma.c
index 2e1662777661..bb2d8e7029eb 100644
--- a/drivers/dma/omap-dma.c
+++ b/drivers/dma/omap-dma.c
@@ -36,6 +36,7 @@ struct omap_chan {
struct dma_slave_config cfg;
unsigned dma_sig;
bool cyclic;
+ bool paused;
int dma_ch;
struct omap_desc *desc;
@@ -367,7 +368,8 @@ static struct dma_async_tx_descriptor *omap_dma_prep_slave_sg(
static struct dma_async_tx_descriptor *omap_dma_prep_dma_cyclic(
struct dma_chan *chan, dma_addr_t buf_addr, size_t buf_len,
- size_t period_len, enum dma_transfer_direction dir, void *context)
+ size_t period_len, enum dma_transfer_direction dir, unsigned long flags,
+ void *context)
{
struct omap_chan *c = to_omap_dma_chan(chan);
enum dma_slave_buswidth dev_width;
@@ -415,7 +417,10 @@ static struct dma_async_tx_descriptor *omap_dma_prep_dma_cyclic(
d->dev_addr = dev_addr;
d->fi = burst;
d->es = es;
- d->sync_mode = OMAP_DMA_SYNC_PACKET;
+ if (burst)
+ d->sync_mode = OMAP_DMA_SYNC_PACKET;
+ else
+ d->sync_mode = OMAP_DMA_SYNC_ELEMENT;
d->sync_type = sync_type;
d->periph_port = OMAP_DMA_PORT_MPUI;
d->sg[0].addr = buf_addr;
@@ -426,7 +431,10 @@ static struct dma_async_tx_descriptor *omap_dma_prep_dma_cyclic(
if (!c->cyclic) {
c->cyclic = true;
omap_dma_link_lch(c->dma_ch, c->dma_ch);
- omap_enable_dma_irq(c->dma_ch, OMAP_DMA_FRAME_IRQ);
+
+ if (flags & DMA_PREP_INTERRUPT)
+ omap_enable_dma_irq(c->dma_ch, OMAP_DMA_FRAME_IRQ);
+
omap_disable_dma_irq(c->dma_ch, OMAP_DMA_BLOCK_IRQ);
}
@@ -435,7 +443,7 @@ static struct dma_async_tx_descriptor *omap_dma_prep_dma_cyclic(
omap_set_dma_dest_burst_mode(c->dma_ch, OMAP_DMA_DATA_BURST_16);
}
- return vchan_tx_prep(&c->vc, &d->vd, DMA_CTRL_ACK | DMA_PREP_INTERRUPT);
+ return vchan_tx_prep(&c->vc, &d->vd, flags);
}
static int omap_dma_slave_config(struct omap_chan *c, struct dma_slave_config *cfg)
@@ -469,11 +477,14 @@ static int omap_dma_terminate_all(struct omap_chan *c)
*/
if (c->desc) {
c->desc = NULL;
- omap_stop_dma(c->dma_ch);
+ /* Avoid stopping the dma twice */
+ if (!c->paused)
+ omap_stop_dma(c->dma_ch);
}
if (c->cyclic) {
c->cyclic = false;
+ c->paused = false;
omap_dma_unlink_lch(c->dma_ch, c->dma_ch);
}
@@ -486,14 +497,30 @@ static int omap_dma_terminate_all(struct omap_chan *c)
static int omap_dma_pause(struct omap_chan *c)
{
- /* FIXME: not supported by platform private API */
- return -EINVAL;
+ /* Pause/Resume only allowed with cyclic mode */
+ if (!c->cyclic)
+ return -EINVAL;
+
+ if (!c->paused) {
+ omap_stop_dma(c->dma_ch);
+ c->paused = true;
+ }
+
+ return 0;
}
static int omap_dma_resume(struct omap_chan *c)
{
- /* FIXME: not supported by platform private API */
- return -EINVAL;
+ /* Pause/Resume only allowed with cyclic mode */
+ if (!c->cyclic)
+ return -EINVAL;
+
+ if (c->paused) {
+ omap_start_dma(c->dma_ch);
+ c->paused = false;
+ }
+
+ return 0;
}
static int omap_dma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index 5d3bbcd279b4..169c0dbd71ae 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -2685,7 +2685,7 @@ static inline int get_burst_len(struct dma_pl330_desc *desc, size_t len)
static struct dma_async_tx_descriptor *pl330_prep_dma_cyclic(
struct dma_chan *chan, dma_addr_t dma_addr, size_t len,
size_t period_len, enum dma_transfer_direction direction,
- void *context)
+ unsigned long flags, void *context)
{
struct dma_pl330_desc *desc;
struct dma_pl330_chan *pch = to_pchan(chan);
diff --git a/drivers/dma/sa11x0-dma.c b/drivers/dma/sa11x0-dma.c
index f5a73606217e..b893159c1ecb 100644
--- a/drivers/dma/sa11x0-dma.c
+++ b/drivers/dma/sa11x0-dma.c
@@ -614,7 +614,7 @@ static struct dma_async_tx_descriptor *sa11x0_dma_prep_slave_sg(
static struct dma_async_tx_descriptor *sa11x0_dma_prep_dma_cyclic(
struct dma_chan *chan, dma_addr_t addr, size_t size, size_t period,
- enum dma_transfer_direction dir, void *context)
+ enum dma_transfer_direction dir, unsigned long flags, void *context)
{
struct sa11x0_dma_chan *c = to_sa11x0_dma_chan(chan);
struct sa11x0_dma_desc *txd;
diff --git a/drivers/dma/sirf-dma.c b/drivers/dma/sirf-dma.c
index 434ad31174f2..3eed8b35b0f1 100644
--- a/drivers/dma/sirf-dma.c
+++ b/drivers/dma/sirf-dma.c
@@ -489,7 +489,7 @@ err_dir:
static struct dma_async_tx_descriptor *
sirfsoc_dma_prep_cyclic(struct dma_chan *chan, dma_addr_t addr,
size_t buf_len, size_t period_len,
- enum dma_transfer_direction direction, void *context)
+ enum dma_transfer_direction direction, unsigned long flags, void *context)
{
struct sirfsoc_dma_chan *schan = dma_chan_to_sirfsoc_dma_chan(chan);
struct sirfsoc_dma_desc *sdesc = NULL;
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 000d309602b2..eee8d9b9a20b 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -2347,7 +2347,8 @@ static struct dma_async_tx_descriptor *d40_prep_slave_sg(struct dma_chan *chan,
static struct dma_async_tx_descriptor *
dma40_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t dma_addr,
size_t buf_len, size_t period_len,
- enum dma_transfer_direction direction, void *context)
+ enum dma_transfer_direction direction, unsigned long flags,
+ void *context)
{
unsigned int periods = buf_len / period_len;
struct dma_async_tx_descriptor *txd;
diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c
index 4708467e4d83..45fbeed1c1a5 100644
--- a/drivers/dma/tegra20-apb-dma.c
+++ b/drivers/dma/tegra20-apb-dma.c
@@ -990,7 +990,7 @@ static struct dma_async_tx_descriptor *tegra_dma_prep_slave_sg(
struct dma_async_tx_descriptor *tegra_dma_prep_dma_cyclic(
struct dma_chan *dc, dma_addr_t buf_addr, size_t buf_len,
size_t period_len, enum dma_transfer_direction direction,
- void *context)
+ unsigned long flags, void *context)
{
struct tegra_dma_channel *tdc = to_tegra_dma_chan(dc);
struct tegra_dma_desc *dma_desc = NULL;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 14:48:52 +0000