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authorManuel Lauss <manuel.lauss@googlemail.com>2009-10-14 11:38:06 +0400
committerRalf Baechle <ralf@linux-mips.org>2010-02-27 14:53:19 +0300
commit3b839070f11295735ce8d9ef580c5eb23417aabf (patch)
treef5a466669cea7e172d260c319601b9e1522d01ac /drivers/mmc/host/au1xmmc.c
parent92bbe1b988d3d6fa6348e3e376ff6d27e0712147 (diff)
downloadlinux-3b839070f11295735ce8d9ef580c5eb23417aabf.tar.xz
MMC: AU1xMMC: Allow platforms to disable host capabilities
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 <manuel.lauss@gmail.com> To: linux-mmc@vger.kernel.org CC: Linux-MIPS <linux-mips@linux-mips.org> Patchwork: http://patchwork.linux-mips.org/patch/460/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'drivers/mmc/host/au1xmmc.c')
-rw-r--r--drivers/mmc/host/au1xmmc.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c
index c8649dfb2d0c..57b21198828f 100644
--- a/drivers/mmc/host/au1xmmc.c
+++ b/drivers/mmc/host/au1xmmc.c
@@ -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);