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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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f0de836923
There are a couple of problems left from the sdhci pltfm and OF consolidation changes. * When building more than one sdhci-pltfm based drivers in the same image, linker will give multiple definition error on the sdhci-pltfm helper functions. For example right now, building sdhci-of-esdhc and sdhci-of-hlwd together is a valid combination from Kconfig view. * With the current build method, there is error with building the drivers as module, but module installation fails with modprobe. The patch fixes above problems by changing sdhci-pltfm into a module. To avoid EXPORT_SYMBOL on so many big endian IO accessors, it moves these accessors into sdhci-pltfm.h as the 'static inline' functions. As a result, sdhci.h needs to be included in sdhci-pltfm.h, and in turn can be removed from individual drivers which already include sdhci-pltfm.h. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
113 lines
2.8 KiB
C
113 lines
2.8 KiB
C
/*
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* drivers/mmc/host/sdhci-of-hlwd.c
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*
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* Nintendo Wii Secure Digital Host Controller Interface.
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* Copyright (C) 2009 The GameCube Linux Team
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* Copyright (C) 2009 Albert Herranz
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*
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* Based on sdhci-of-esdhc.c
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*
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* Copyright (c) 2007 Freescale Semiconductor, Inc.
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* Copyright (c) 2009 MontaVista Software, Inc.
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*
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* Authors: Xiaobo Xie <X.Xie@freescale.com>
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* Anton Vorontsov <avorontsov@ru.mvista.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*/
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#include <linux/delay.h>
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#include <linux/mmc/host.h>
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#include "sdhci-pltfm.h"
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/*
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* Ops and quirks for the Nintendo Wii SDHCI controllers.
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*/
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/*
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* We need a small delay after each write, or things go horribly wrong.
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*/
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#define SDHCI_HLWD_WRITE_DELAY 5 /* usecs */
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static void sdhci_hlwd_writel(struct sdhci_host *host, u32 val, int reg)
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{
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sdhci_be32bs_writel(host, val, reg);
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udelay(SDHCI_HLWD_WRITE_DELAY);
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}
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static void sdhci_hlwd_writew(struct sdhci_host *host, u16 val, int reg)
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{
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sdhci_be32bs_writew(host, val, reg);
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udelay(SDHCI_HLWD_WRITE_DELAY);
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}
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static void sdhci_hlwd_writeb(struct sdhci_host *host, u8 val, int reg)
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{
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sdhci_be32bs_writeb(host, val, reg);
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udelay(SDHCI_HLWD_WRITE_DELAY);
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}
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static struct sdhci_ops sdhci_hlwd_ops = {
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.read_l = sdhci_be32bs_readl,
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.read_w = sdhci_be32bs_readw,
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.read_b = sdhci_be32bs_readb,
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.write_l = sdhci_hlwd_writel,
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.write_w = sdhci_hlwd_writew,
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.write_b = sdhci_hlwd_writeb,
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};
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static struct sdhci_pltfm_data sdhci_hlwd_pdata = {
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.quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
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SDHCI_QUIRK_32BIT_DMA_SIZE,
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.ops = &sdhci_hlwd_ops,
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};
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static int __devinit sdhci_hlwd_probe(struct platform_device *pdev)
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{
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return sdhci_pltfm_register(pdev, &sdhci_hlwd_pdata);
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}
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static int __devexit sdhci_hlwd_remove(struct platform_device *pdev)
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{
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return sdhci_pltfm_unregister(pdev);
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}
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static const struct of_device_id sdhci_hlwd_of_match[] = {
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{ .compatible = "nintendo,hollywood-sdhci" },
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{ }
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};
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MODULE_DEVICE_TABLE(of, sdhci_hlwd_of_match);
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static struct platform_driver sdhci_hlwd_driver = {
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.driver = {
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.name = "sdhci-hlwd",
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.owner = THIS_MODULE,
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.of_match_table = sdhci_hlwd_of_match,
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},
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.probe = sdhci_hlwd_probe,
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.remove = __devexit_p(sdhci_hlwd_remove),
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#ifdef CONFIG_PM
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.suspend = sdhci_pltfm_suspend,
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.resume = sdhci_pltfm_resume,
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#endif
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};
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static int __init sdhci_hlwd_init(void)
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{
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return platform_driver_register(&sdhci_hlwd_driver);
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}
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module_init(sdhci_hlwd_init);
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static void __exit sdhci_hlwd_exit(void)
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{
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platform_driver_unregister(&sdhci_hlwd_driver);
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}
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module_exit(sdhci_hlwd_exit);
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MODULE_DESCRIPTION("Nintendo Wii SDHCI OF driver");
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MODULE_AUTHOR("The GameCube Linux Team, Albert Herranz");
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MODULE_LICENSE("GPL v2");
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