LXR linux/drivers/bus/sun50i-de2.c

   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
  12static 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
  28static int sun50i_de2_bus_remove(struct platform_device *pdev)
  29{
  30        sunxi_sram_release(&pdev->dev);
  31        return 0;
  32}
  33
  34static const struct of_device_id sun50i_de2_bus_of_match[] = {
  35        { .compatible = "allwinner,sun50i-a64-de2", },
  36        { /* sentinel */ }
  37};
  38
  39static 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
  48builtin_platform_driver(sun50i_de2_bus_driver);
  49