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 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 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