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authorPeter Ujfalusi <peter.ujfalusi@ti.com>2015-11-02 16:21:40 +0300
committerVinod Koul <vinod.koul@intel.com>2015-11-04 19:41:42 +0300
commit34635b1accb99b3c3ad3b35a210be198701aac7e (patch)
treecec0af61443eb64d4a5792b6ad7bca7e8a81212e /drivers/dma
parent829a2fac71b83c1689213337e8cfc58a9ea12211 (diff)
downloadlinux-34635b1accb99b3c3ad3b35a210be198701aac7e.tar.xz
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>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/edma.c19
1 files changed, 19 insertions, 0 deletions
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);