int fsl_edma_alloc_chan_resources(struct dma_chan *chan)
{
struct fsl_edma_chan *fsl_chan = to_fsl_edma_chan(chan);
+ int ret;
if (fsl_edma_drvflags(fsl_chan) & FSL_EDMA_DRV_HAS_CHCLK)
clk_prepare_enable(fsl_chan->clk);
fsl_edma_drvflags(fsl_chan) & FSL_EDMA_DRV_TCD64 ?
sizeof(struct fsl_edma_hw_tcd64) : sizeof(struct fsl_edma_hw_tcd),
32, 0);
+
+ if (fsl_chan->txirq) {
+ ret = request_irq(fsl_chan->txirq, fsl_chan->irq_handler, IRQF_SHARED,
+ fsl_chan->chan_name, fsl_chan);
+
+ if (ret) {
+ dma_pool_destroy(fsl_chan->tcd_pool);
+ return ret;
+ }
+ }
+
return 0;
}
fsl_edma_unprep_slave_dma(fsl_chan);
spin_unlock_irqrestore(&fsl_chan->vchan.lock, flags);
+ if (fsl_chan->txirq)
+ free_irq(fsl_chan->txirq, fsl_chan);
+
vchan_dma_desc_free_list(&fsl_chan->vchan, &head);
dma_pool_destroy(fsl_chan->tcd_pool);
fsl_chan->tcd_pool = NULL;
return IRQ_HANDLED;
}
+static irqreturn_t fsl_edma2_tx_handler(int irq, void *devi_id)
+{
+ struct fsl_edma_chan *fsl_chan = devi_id;
+
+ return fsl_edma_tx_handler(irq, fsl_chan->edma);
+}
+
static irqreturn_t fsl_edma_err_handler(int irq, void *dev_id)
{
struct fsl_edma_engine *fsl_edma = dev_id;
static int fsl_edma3_irq_init(struct platform_device *pdev, struct fsl_edma_engine *fsl_edma)
{
- int ret;
int i;
for (i = 0; i < fsl_edma->n_chans; i++) {
if (fsl_chan->txirq < 0)
return -EINVAL;
- ret = devm_request_irq(&pdev->dev, fsl_chan->txirq,
- fsl_edma3_tx_handler, IRQF_SHARED,
- fsl_chan->chan_name, fsl_chan);
- if (ret) {
- dev_err(&pdev->dev, "Can't register chan%d's IRQ.\n", i);
- return -EINVAL;
- }
+ fsl_chan->irq_handler = fsl_edma3_tx_handler;
}
return 0;
*/
for (i = 0; i < count; i++) {
irq = platform_get_irq(pdev, i);
+ ret = 0;
if (irq < 0)
return -ENXIO;
/* The last IRQ is for eDMA err */
- if (i == count - 1)
+ if (i == count - 1) {
ret = devm_request_irq(&pdev->dev, irq,
fsl_edma_err_handler,
0, "eDMA2-ERR", fsl_edma);
- else
- ret = devm_request_irq(&pdev->dev, irq,
- fsl_edma_tx_handler, 0,
- fsl_edma->chans[i].chan_name,
- fsl_edma);
+ } else {
+ fsl_edma->chans[i].txirq = irq;
+ fsl_edma->chans[i].irq_handler = fsl_edma2_tx_handler;
+ }
+
if (ret)
return ret;
}