dmaengine: mxs: Split device_control
Split the device_control callback of the Freescale MXS DMA driver to make use
of the newly introduced callbacks, that will eventually be used to retrieve
slave capabilities.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c
index 5ea6120..834041e 100644
--- a/drivers/dma/mxs-dma.c
+++ b/drivers/dma/mxs-dma.c
@@ -202,8 +202,9 @@
return container_of(chan, struct mxs_dma_chan, chan);
}
-static void mxs_dma_reset_chan(struct mxs_dma_chan *mxs_chan)
+static void mxs_dma_reset_chan(struct dma_chan *chan)
{
+ struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
int chan_id = mxs_chan->chan.chan_id;
@@ -250,8 +251,9 @@
mxs_chan->status = DMA_COMPLETE;
}
-static void mxs_dma_enable_chan(struct mxs_dma_chan *mxs_chan)
+static void mxs_dma_enable_chan(struct dma_chan *chan)
{
+ struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
int chan_id = mxs_chan->chan.chan_id;
@@ -272,13 +274,16 @@
mxs_chan->reset = false;
}
-static void mxs_dma_disable_chan(struct mxs_dma_chan *mxs_chan)
+static void mxs_dma_disable_chan(struct dma_chan *chan)
{
+ struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
+
mxs_chan->status = DMA_COMPLETE;
}
-static void mxs_dma_pause_chan(struct mxs_dma_chan *mxs_chan)
+static void mxs_dma_pause_chan(struct dma_chan *chan)
{
+ struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
int chan_id = mxs_chan->chan.chan_id;
@@ -293,8 +298,9 @@
mxs_chan->status = DMA_PAUSED;
}
-static void mxs_dma_resume_chan(struct mxs_dma_chan *mxs_chan)
+static void mxs_dma_resume_chan(struct dma_chan *chan)
{
+ struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
int chan_id = mxs_chan->chan.chan_id;
@@ -383,7 +389,7 @@
"%s: error in channel %d\n", __func__,
chan);
mxs_chan->status = DMA_ERROR;
- mxs_dma_reset_chan(mxs_chan);
+ mxs_dma_reset_chan(mxs_chan->chan);
} else if (mxs_chan->status != DMA_COMPLETE) {
if (mxs_chan->flags & MXS_DMA_SG_LOOP) {
mxs_chan->status = DMA_IN_PROGRESS;
@@ -432,7 +438,7 @@
if (ret)
goto err_clk;
- mxs_dma_reset_chan(mxs_chan);
+ mxs_dma_reset_chan(chan);
dma_async_tx_descriptor_init(&mxs_chan->desc, chan);
mxs_chan->desc.tx_submit = mxs_dma_tx_submit;
@@ -456,7 +462,7 @@
struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
- mxs_dma_disable_chan(mxs_chan);
+ mxs_dma_disable_chan(chan);
free_irq(mxs_chan->chan_irq, mxs_dma);
@@ -651,28 +657,14 @@
return NULL;
}
-static int mxs_dma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
- unsigned long arg)
+static int mxs_dma_terminate_all(struct dma_chan *chan)
{
struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
- int ret = 0;
- switch (cmd) {
- case DMA_TERMINATE_ALL:
- mxs_dma_reset_chan(mxs_chan);
- mxs_dma_disable_chan(mxs_chan);
- break;
- case DMA_PAUSE:
- mxs_dma_pause_chan(mxs_chan);
- break;
- case DMA_RESUME:
- mxs_dma_resume_chan(mxs_chan);
- break;
- default:
- ret = -ENOSYS;
- }
+ mxs_dma_reset_chan(chan);
+ mxs_dma_disable_chan(chan);
- return ret;
+ return 0;
}
static enum dma_status mxs_dma_tx_status(struct dma_chan *chan,
@@ -701,13 +693,6 @@
return mxs_chan->status;
}
-static void mxs_dma_issue_pending(struct dma_chan *chan)
-{
- struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
-
- mxs_dma_enable_chan(mxs_chan);
-}
-
static int __init mxs_dma_init(struct mxs_dma_engine *mxs_dma)
{
int ret;
@@ -860,8 +845,10 @@
mxs_dma->dma_device.device_tx_status = mxs_dma_tx_status;
mxs_dma->dma_device.device_prep_slave_sg = mxs_dma_prep_slave_sg;
mxs_dma->dma_device.device_prep_dma_cyclic = mxs_dma_prep_dma_cyclic;
- mxs_dma->dma_device.device_control = mxs_dma_control;
- mxs_dma->dma_device.device_issue_pending = mxs_dma_issue_pending;
+ mxs_dma->dma_device.device_pause = mxs_dma_pause_chan;
+ mxs_dma->dma_device.device_resume = mxs_dma_resume_chan;
+ mxs_dma->dma_device.device_terminate_all = mxs_dma_terminate_all;
+ mxs_dma->dma_device.device_issue_pending = mxs_dma_enable_chan;
ret = dma_async_device_register(&mxs_dma->dma_device);
if (ret) {