1144ab5d4b
Add support for the Secure Digital Host Controller Interface found on the "Hollywood" chipset of the Nintendo Wii video game console. Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Cc: <linux-mmc@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
66 lines
1.7 KiB
C
66 lines
1.7 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-of.h"
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#include "sdhci.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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struct sdhci_of_data sdhci_hlwd = {
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.quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
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SDHCI_QUIRK_32BIT_DMA_SIZE,
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.ops = {
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.readl = sdhci_be32bs_readl,
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.readw = sdhci_be32bs_readw,
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.readb = sdhci_be32bs_readb,
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.writel = sdhci_hlwd_writel,
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.writew = sdhci_hlwd_writew,
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.writeb = sdhci_hlwd_writeb,
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},
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};
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