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>
diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c
index 31722d4..6b03e4e 100644
--- a/drivers/dma/edma.c
+++ b/drivers/dma/edma.c
@@ -269,6 +269,11 @@
{}
};
+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_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 @@
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 @@
static void __exit edma_exit(void)
{
platform_driver_unregister(&edma_driver);
+ platform_driver_unregister(&edma_tptc_driver);
}
module_exit(edma_exit);