From 34635b1accb99b3c3ad3b35a210be198701aac7e Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Mon, 2 Nov 2015 15:21:40 +0200 Subject: [PATCH] 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 Reported-by: Olof Johansson Tested-by: Felipe Balbi Signed-off-by: Vinod Koul --- drivers/dma/edma.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c index 31722d436a42..6b03e4e84e6b 100644 --- a/drivers/dma/edma.c +++ b/drivers/dma/edma.c @@ -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); -- 2.20.1