Commit 34635b1a authored by Peter Ujfalusi's avatar Peter Ujfalusi Committed by Vinod Koul
Browse files

dmaengine: edma: Add dummy driver skeleton for edma3-tptc 



The eDMA3 TPTC does not need any software configuration, but it is a
separate IP block in the SoC. In order the omap hwmod core to be able to
handle the TPTC resources correctly in regards of PM we need to have a
driver loaded for it.
This patch will add a dummy driver skeleton without probe or remove
callbacks provided.

Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
Reported-by: default avatarOlof Johansson <olof@lixom.net>
Tested-by: default avatarFelipe Balbi <balbi@ti.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent 829a2fac

drivers/dma/edma.c

+19 −0
Original line number Original line Diff line number Diff line
@@ -269,6 +269,11 @@ static const struct of_device_id edma_of_ids[] = { 
	{}

	{}

};

};





static const struct of_device_id edma_tptc_of_ids[] = {

	{ .compatible = "ti,edma3-tptc", },

	{}

};



static inline unsigned int edma_read(struct edma_cc *ecc, int offset)

static inline unsigned int edma_read(struct edma_cc *ecc, int offset)

{

{

	return (unsigned int)__raw_readl(ecc->base + offset);

	return (unsigned int)__raw_readl(ecc->base + offset);
@@ -2399,6 +2404,13 @@ static struct platform_driver edma_driver = { 
	},

	},

};

};





static struct platform_driver edma_tptc_driver = {

	.driver = {

		.name	= "edma3-tptc",

		.of_match_table = edma_tptc_of_ids,

	},

};



bool edma_filter_fn(struct dma_chan *chan, void *param)

bool edma_filter_fn(struct dma_chan *chan, void *param)

{

{

	bool match = false;

	bool match = false;
@@ -2418,6 +2430,12 @@ EXPORT_SYMBOL(edma_filter_fn); 




static int edma_init(void)

static int edma_init(void)

{

{

	int ret;



	ret = platform_driver_register(&edma_tptc_driver);

	if (ret)

		return ret;



	return platform_driver_register(&edma_driver);

	return platform_driver_register(&edma_driver);

}

}

subsys_initcall(edma_init);

subsys_initcall(edma_init);
@@ -2425,6 +2443,7 @@ subsys_initcall(edma_init); 
static void __exit edma_exit(void)

static void __exit edma_exit(void)

{

{

	platform_driver_unregister(&edma_driver);

	platform_driver_unregister(&edma_driver);

	platform_driver_unregister(&edma_tptc_driver);

}

}

module_exit(edma_exit);

module_exit(edma_exit);

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