1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Allwinner A64 Display Engine 2.0 Bus Driver
4 *
5 * Copyright (C) 2018 Icenowy Zheng <icenowy@aosc.io>
6 */
7
8 #include <linux/of_platform.h>
9 #include <linux/platform_device.h>
10 #include <linux/soc/sunxi/sunxi_sram.h>
11
sun50i_de2_bus_probe(struct platform_device * pdev)12 static int sun50i_de2_bus_probe(struct platform_device *pdev)
13 {
14 struct device_node *np = pdev->dev.of_node;
15 int ret;
16
17 ret = sunxi_sram_claim(&pdev->dev);
18 if (ret)
19 return dev_err_probe(&pdev->dev, ret,
20 "Couldn't map SRAM to device\n");
21
22 of_platform_populate(np, NULL, NULL, &pdev->dev);
23
24 return 0;
25 }
26
sun50i_de2_bus_remove(struct platform_device * pdev)27 static int sun50i_de2_bus_remove(struct platform_device *pdev)
28 {
29 sunxi_sram_release(&pdev->dev);
30 return 0;
31 }
32
33 static const struct of_device_id sun50i_de2_bus_of_match[] = {
34 { .compatible = "allwinner,sun50i-a64-de2", },
35 { /* sentinel */ }
36 };
37
38 static struct platform_driver sun50i_de2_bus_driver = {
39 .probe = sun50i_de2_bus_probe,
40 .remove = sun50i_de2_bus_remove,
41 .driver = {
42 .name = "sun50i-de2-bus",
43 .of_match_table = sun50i_de2_bus_of_match,
44 },
45 };
46
47 builtin_platform_driver(sun50i_de2_bus_driver);
48