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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: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reported-by: Olof Johansson <olof@lixom.net>
Tested-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Peter Ujfalusi 2015-11-02 15:21:40 +02:00 committed by Vinod Koul
parent 829a2fac71
commit 34635b1acc
1 changed files with 19 additions and 0 deletions
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19
drivers/dma/edma.c
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@ -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)
{
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 match = false;
@ -2418,6 +2430,12 @@ EXPORT_SYMBOL(edma_filter_fn);
static int edma_init(void)
{
int ret;
ret = platform_driver_register(&edma_tptc_driver);
if (ret)
return ret;
return platform_driver_register(&edma_driver);
}
subsys_initcall(edma_init);
@ -2425,6 +2443,7 @@ subsys_initcall(edma_init);
static void __exit edma_exit(void)
{
platform_driver_unregister(&edma_driver);
platform_driver_unregister(&edma_tptc_driver);
}
module_exit(edma_exit);