From 426506a7e0f1902268c3edbdc7e5475624a9d18b Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Tue, 8 Dec 2020 11:04:24 +0200 Subject: dmaengine: ti: k3-udma-glue: Add function to get device pointer for DMA API Glue layer users should use the device of the DMA for DMA mapping and allocations as it is the DMA which accesses to descriptors and buffers, not the clients Signed-off-by: Peter Ujfalusi Reviewed-by: Grygorii Strashko Link: https://lore.kernel.org/r/20201208090440.31792-5-peter.ujfalusi@ti.com Signed-off-by: Vinod Koul --- drivers/dma/ti/k3-udma-glue.c | 14 ++++++++++++++ drivers/dma/ti/k3-udma-private.c | 6 ++++++ drivers/dma/ti/k3-udma.h | 1 + 3 files changed, 21 insertions(+) (limited to 'drivers/dma') diff --git a/drivers/dma/ti/k3-udma-glue.c b/drivers/dma/ti/k3-udma-glue.c index dfb65e382ab9..29d1524d1916 100644 --- a/drivers/dma/ti/k3-udma-glue.c +++ b/drivers/dma/ti/k3-udma-glue.c @@ -493,6 +493,13 @@ int k3_udma_glue_tx_get_irq(struct k3_udma_glue_tx_channel *tx_chn) } EXPORT_SYMBOL_GPL(k3_udma_glue_tx_get_irq); +struct device * + k3_udma_glue_tx_get_dma_device(struct k3_udma_glue_tx_channel *tx_chn) +{ + return xudma_get_device(tx_chn->common.udmax); +} +EXPORT_SYMBOL_GPL(k3_udma_glue_tx_get_dma_device); + static int k3_udma_glue_cfg_rx_chn(struct k3_udma_glue_rx_channel *rx_chn) { const struct udma_tisci_rm *tisci_rm = rx_chn->common.tisci_rm; @@ -1201,3 +1208,10 @@ int k3_udma_glue_rx_get_irq(struct k3_udma_glue_rx_channel *rx_chn, return flow->virq; } EXPORT_SYMBOL_GPL(k3_udma_glue_rx_get_irq); + +struct device * + k3_udma_glue_rx_get_dma_device(struct k3_udma_glue_rx_channel *rx_chn) +{ + return xudma_get_device(rx_chn->common.udmax); +} +EXPORT_SYMBOL_GPL(k3_udma_glue_rx_get_dma_device); diff --git a/drivers/dma/ti/k3-udma-private.c b/drivers/dma/ti/k3-udma-private.c index aa24e554f7b4..8ff7a264be03 100644 --- a/drivers/dma/ti/k3-udma-private.c +++ b/drivers/dma/ti/k3-udma-private.c @@ -50,6 +50,12 @@ struct udma_dev *of_xudma_dev_get(struct device_node *np, const char *property) } EXPORT_SYMBOL(of_xudma_dev_get); +struct device *xudma_get_device(struct udma_dev *ud) +{ + return ud->dev; +} +EXPORT_SYMBOL(xudma_get_device); + u32 xudma_dev_get_psil_base(struct udma_dev *ud) { return ud->psil_base; diff --git a/drivers/dma/ti/k3-udma.h b/drivers/dma/ti/k3-udma.h index 09c4529e013d..d1cace0cb43b 100644 --- a/drivers/dma/ti/k3-udma.h +++ b/drivers/dma/ti/k3-udma.h @@ -112,6 +112,7 @@ int xudma_navss_psil_unpair(struct udma_dev *ud, u32 src_thread, u32 dst_thread); struct udma_dev *of_xudma_dev_get(struct device_node *np, const char *property); +struct device *xudma_get_device(struct udma_dev *ud); void xudma_dev_put(struct udma_dev *ud); u32 xudma_dev_get_psil_base(struct udma_dev *ud); struct udma_tisci_rm *xudma_dev_get_tisci_rm(struct udma_dev *ud); -- cgit v1.2.3