51 lines
1.6 KiB
Diff
51 lines
1.6 KiB
Diff
From 06d314090d1c837d5f2c42c9686c8e8fa7db7370 Mon Sep 17 00:00:00 2001
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From: Grigori Goronzy <greg@blackbox>
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Date: Mon, 11 Jun 2012 18:57:13 +0200
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Subject: [PATCH 014/196] sdhci-bcm2708: add allow_highspeed parameter
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Add a parameter to disable high-speed mode for the few cards that
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still might have problems. High-speed mode is enabled by default.
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---
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drivers/mmc/host/sdhci-bcm2708.c | 9 ++++++++-
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1 file changed, 8 insertions(+), 1 deletion(-)
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diff --git a/drivers/mmc/host/sdhci-bcm2708.c b/drivers/mmc/host/sdhci-bcm2708.c
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index 3001836..c64de21 100644
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--- a/drivers/mmc/host/sdhci-bcm2708.c
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+++ b/drivers/mmc/host/sdhci-bcm2708.c
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@@ -129,6 +129,8 @@ static inline unsigned long int since_ns(hptime_t t)
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return (unsigned long)((hptime() - t) * HPTIME_CLK_NS);
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}
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+static bool allow_highspeed = 1;
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+
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#if 0
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static void hptime_test(void)
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{
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@@ -1254,7 +1256,8 @@ static int sdhci_bcm2708_probe(struct platform_device *pdev)
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host_priv->dma_chan, host_priv->dma_chan_base,
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host_priv->dma_irq);
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- host->mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED;
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+ if (allow_highspeed)
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+ host->mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED;
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#endif
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ret = sdhci_add_host(host);
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@@ -1357,8 +1360,12 @@ static void __exit sdhci_drv_exit(void)
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module_init(sdhci_drv_init);
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module_exit(sdhci_drv_exit);
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+module_param(allow_highspeed, bool, 0444);
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+
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MODULE_DESCRIPTION("Secure Digital Host Controller Interface platform driver");
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MODULE_AUTHOR("Broadcom <info@broadcom.com>");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("platform:"DRIVER_NAME);
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+MODULE_PARM_DESC(allow_highspeed, "Allow high speed transfers modes");
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+
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--
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1.9.1
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