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sdhci-of: add support for the wii sdhci controller
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>
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/* | ||
* drivers/mmc/host/sdhci-of-hlwd.c | ||
* | ||
* Nintendo Wii Secure Digital Host Controller Interface. | ||
* Copyright (C) 2009 The GameCube Linux Team | ||
* Copyright (C) 2009 Albert Herranz | ||
* | ||
* Based on sdhci-of-esdhc.c | ||
* | ||
* Copyright (c) 2007 Freescale Semiconductor, Inc. | ||
* Copyright (c) 2009 MontaVista Software, Inc. | ||
* | ||
* Authors: Xiaobo Xie <X.Xie@freescale.com> | ||
* Anton Vorontsov <avorontsov@ru.mvista.com> | ||
* | ||
* This program is free software; you can redistribute it and/or modify | ||
* it under the terms of the GNU General Public License as published by | ||
* the Free Software Foundation; either version 2 of the License, or (at | ||
* your option) any later version. | ||
*/ | ||
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#include <linux/delay.h> | ||
#include <linux/mmc/host.h> | ||
#include "sdhci-of.h" | ||
#include "sdhci.h" | ||
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/* | ||
* Ops and quirks for the Nintendo Wii SDHCI controllers. | ||
*/ | ||
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/* | ||
* We need a small delay after each write, or things go horribly wrong. | ||
*/ | ||
#define SDHCI_HLWD_WRITE_DELAY 5 /* usecs */ | ||
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static void sdhci_hlwd_writel(struct sdhci_host *host, u32 val, int reg) | ||
{ | ||
sdhci_be32bs_writel(host, val, reg); | ||
udelay(SDHCI_HLWD_WRITE_DELAY); | ||
} | ||
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static void sdhci_hlwd_writew(struct sdhci_host *host, u16 val, int reg) | ||
{ | ||
sdhci_be32bs_writew(host, val, reg); | ||
udelay(SDHCI_HLWD_WRITE_DELAY); | ||
} | ||
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static void sdhci_hlwd_writeb(struct sdhci_host *host, u8 val, int reg) | ||
{ | ||
sdhci_be32bs_writeb(host, val, reg); | ||
udelay(SDHCI_HLWD_WRITE_DELAY); | ||
} | ||
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struct sdhci_of_data sdhci_hlwd = { | ||
.quirks = SDHCI_QUIRK_32BIT_DMA_ADDR | | ||
SDHCI_QUIRK_32BIT_DMA_SIZE, | ||
.ops = { | ||
.readl = sdhci_be32bs_readl, | ||
.readw = sdhci_be32bs_readw, | ||
.readb = sdhci_be32bs_readb, | ||
.writel = sdhci_hlwd_writel, | ||
.writew = sdhci_hlwd_writew, | ||
.writeb = sdhci_hlwd_writeb, | ||
}, | ||
}; |
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