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Commit de506089 authored by Peter Ujfalusi's avatar Peter Ujfalusi Committed by Vinod Koul
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dmaengine: omap-dma: Take DMA request number from DT if it is available 



Use the dma-requests property from DT to get the number of DMA requests.
In case of legacy boot or failure to find the property, use the default
127 as number of requests.

Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent 341ce712

drivers/dma/omap-dma.c

+11 −1
Original line number Diff line number Diff line
@@ -34,6 +34,7 @@ struct omap_dmadev { 
	const struct omap_dma_reg *reg_map;

	struct omap_system_dma_plat_info *plat;

	bool legacy;

	unsigned dma_requests;

	spinlock_t irq_lock;

	uint32_t irq_enable_mask;

	struct omap_chan *lch_map[OMAP_SDMA_CHANNELS];
@@ -1119,7 +1120,16 @@ static int omap_dma_probe(struct platform_device *pdev) 


	tasklet_init(&od->task, omap_dma_sched, (unsigned long)od);



	for (i = 0; i < OMAP_SDMA_REQUESTS; i++) {

	od->dma_requests = OMAP_SDMA_REQUESTS;

	if (pdev->dev.of_node && of_property_read_u32(pdev->dev.of_node,

						      "dma-requests",

						      &od->dma_requests)) {

		dev_info(&pdev->dev,

			 "Missing dma-requests property, using %u.\n",

			 OMAP_SDMA_REQUESTS);

	}



	for (i = 0; i < od->dma_requests; i++) {

		rc = omap_dma_chan_init(od, i);

		if (rc) {

			omap_dma_free(od);