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MMC: AU1xMMC: Allow platforms to disable host capabilities

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Although the hardware supports a 4/8bit SD interface and the driver
unconditionally advertises all hardware caps to the MMC core, not all
datalines may actually be wired up.  This patch introduces another
field to au1xmmc platform data allowing platforms to disable certain
advanced host controller features.

Signed-off-by: Manuel Lauss <[email protected]>
To: [email protected]
CC: Linux-MIPS <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/460/
Signed-off-by: Ralf Baechle <[email protected]>
This commit is contained in:
Manuel Lauss 2009-10-14 09:38:06 +02:00 • committed by Ralf Baechle
commit 3b839070f1
2 changed files with 5 additions and 0 deletions
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4
drivers/mmc/host/au1xmmc.c
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@ -1017,6 +1017,10 @@ static int __devinit au1xmmc_probe(struct platform_device *pdev)
} else
mmc->caps |= MMC_CAP_NEEDS_POLL;
/* platform may not be able to use all advertised caps */
if (host->platdata)
mmc->caps &= ~(host->platdata->mask_host_caps);
tasklet_init(&host->data_task, au1xmmc_tasklet_data,
(unsigned long)host);