diff options
| -rw-r--r-- | drivers/dma/mxs-dma.c | 59 |
1 files changed, 23 insertions, 36 deletions
diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c index 5ea61201dbf0..834041e5a769 100644 --- a/drivers/dma/mxs-dma.c +++ b/drivers/dma/mxs-dma.c @@ -202,8 +202,9 @@ static struct mxs_dma_chan *to_mxs_dma_chan(struct dma_chan *chan) 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 @@ static void mxs_dma_reset_chan(struct mxs_dma_chan *mxs_chan) 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 @@ static void mxs_dma_enable_chan(struct mxs_dma_chan *mxs_chan) 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 @@ static void mxs_dma_pause_chan(struct mxs_dma_chan *mxs_chan) 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 @@ static irqreturn_t mxs_dma_int_handler(int irq, void *dev_id) "%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 @@ static int mxs_dma_alloc_chan_resources(struct dma_chan *chan) 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 @@ static void mxs_dma_free_chan_resources(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; - mxs_dma_disable_chan(mxs_chan); + mxs_dma_disable_chan(chan); free_irq(mxs_chan->chan_irq, mxs_dma); @@ -651,28 +657,14 @@ err_out: 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; - } - return ret; + mxs_dma_reset_chan(chan); + mxs_dma_disable_chan(chan); + + return 0; } static enum dma_status mxs_dma_tx_status(struct dma_chan *chan, @@ -701,13 +693,6 @@ static enum dma_status mxs_dma_tx_status(struct dma_chan *chan, 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 @@ static int __init mxs_dma_probe(struct platform_device *pdev) 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) { |