[v12,13/17] dmaengine: dw-axi-dmac: Add Intel KeemBay AxiDMA support
diff mbox series

Message ID 20210125013255.25799-14-jee.heng.sia@intel.com
State Accepted
Commit 3df2d81f878dcd67716f09403a3f4bfa5c319d3b
Headers show
Series
  • dmaengine: dw-axi-dmac: support Intel KeemBay AxiDMA
Related show

Commit Message

Sia, Jee Heng Jan. 25, 2021, 1:32 a.m. UTC
Add support for Intel KeemBay AxiDMA to the .compatible field.
The AxiDMA Apb region will be accessible if the compatible string
matches the "intel,kmb-axi-dma".

Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Tested-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
---
 drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c | 8 ++++++++
 1 file changed, 8 insertions(+)

Patch
diff mbox series

diff --git a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
index 830d3de76abd..062d27c61983 100644
--- a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
+++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
@@ -1160,6 +1160,7 @@  static int parse_device_properties(struct axi_dma_chip *chip)
 
 static int dw_probe(struct platform_device *pdev)
 {
+	struct device_node *node = pdev->dev.of_node;
 	struct axi_dma_chip *chip;
 	struct resource *mem;
 	struct dw_axi_dma *dw;
@@ -1192,6 +1193,12 @@  static int dw_probe(struct platform_device *pdev)
 	if (IS_ERR(chip->regs))
 		return PTR_ERR(chip->regs);
 
+	if (of_device_is_compatible(node, "intel,kmb-axi-dma")) {
+		chip->apb_regs = devm_platform_ioremap_resource(pdev, 1);
+		if (IS_ERR(chip->apb_regs))
+			return PTR_ERR(chip->apb_regs);
+	}
+
 	chip->core_clk = devm_clk_get(chip->dev, "core-clk");
 	if (IS_ERR(chip->core_clk))
 		return PTR_ERR(chip->core_clk);
@@ -1336,6 +1343,7 @@  static const struct dev_pm_ops dw_axi_dma_pm_ops = {
 
 static const struct of_device_id dw_dma_of_id_table[] = {
 	{ .compatible = "snps,axi-dma-1.01a" },
+	{ .compatible = "intel,kmb-axi-dma" },
 	{}
 };
 MODULE_DEVICE_TABLE(of, dw_dma_of_id_table);