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 dev_err(&pdev->dev, "Error couldn't map SRAM to device\n"); 20 return ret; 21 } 22 23 of_platform_populate(np, NULL, NULL, &pdev->dev); 24 25 return 0; 26 } 27 28 static int sun50i_de2_bus_remove(struct platform_device *pdev) 29 { 30 sunxi_sram_release(&pdev->dev); 31 return 0; 32 } 33 34 static const struct of_device_id sun50i_de2_bus_of_match[] = { 35 { .compatible = "allwinner,sun50i-a64-de2", }, 36 { /* sentinel */ } 37 }; 38 39 static struct platform_driver sun50i_de2_bus_driver = { 40 .probe = sun50i_de2_bus_probe, 41 .remove = sun50i_de2_bus_remove, 42 .driver = { 43 .name = "sun50i-de2-bus", 44 .of_match_table = sun50i_de2_bus_of_match, 45 }, 46 }; 47 48 builtin_platform_driver(sun50i_de2_bus_driver); 49