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