author: Icenowy Zheng <icenowy@aosc.io> 2018-06-22 20:45:36 +0800
committer: Maxime Ripard <maxime.ripard@bootlin.com> 2018-06-28 10:20:19 +0200
commit: 8818e865aa35493baf7326f9335b8ec6b7d77df7
parent: a6e3ab0bcc34647365c4dee74fc8707de607c250
Commit Summary:
Diffstat:
1 file changed, 39 insertions, 0 deletions
diff --git a/drivers/bus/sun50i-de2.c b/drivers/bus/sun50i-de2.c
new file mode 100644
index 000000000000..672518741f86
--- /dev/null
+++ b/drivers/bus/sun50i-de2.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Allwinner A64 Display Engine 2.0 Bus Driver
+ *
+ * Copyright (C) 2018 Icenowy Zheng <icenowy@aosc.io>
+ */
+
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/soc/sunxi/sunxi_sram.h>
+
+static int sun50i_de2_bus_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ int ret;
+
+ ret = sunxi_sram_claim(&pdev->dev);
+ if (ret) {
+ dev_err(&pdev->dev, "Error couldn't map SRAM to device\n");
+ return ret;
+ }
+
+ of_platform_populate(np, NULL, NULL, &pdev->dev);
+
+ return 0;
+}
+
+static int sun50i_de2_bus_remove(struct platform_device *pdev)
+{
+ sunxi_sram_release(&pdev->dev);
+ return 0;
+}
+
+static const struct of_device_id sun50i_de2_bus_of_match[] = {
+ { .compatible = "allwinner,sun50i-a64-de2", },
+ { /* sentinel */ }
+};
+
+static struct platform_driver sun50i_de2_bus_driver = {
+ .probe = sun50i_de2_bus_probe,
+ .remove = sun50i_de2_bus_remove,
+ .driver = {
+ .name = "sun50i-de2-bus",
+ .of_match_table = sun50i_de2_bus_of_match,
+ },
+};
+
+builtin_platform_driver(sun50i_de2_bus_driver);