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authorAnton Vorontsov <avorontsov@ru.mvista.com>2009-03-17 00:13:46 +0300
committerPierre Ossman <drzeus@drzeus.cx>2009-03-24 21:30:07 +0100
commit4e4141a526dd7f5ac3ce1458ae79ea6e5a515b06 (patch)
tree06f374b2e3a7a22eb66261d79d3374b1d23e5350 /drivers/mmc/host/Kconfig
parentf079a8fc61e3dc35830f6abc58c21ae815ab4297 (diff)
sdhci: Add support for bus-specific IO memory accessors
Currently the SDHCI driver works with PCI accessors (write{l,b,w} and read{l,b,w}). With this patch drivers may change memory accessors, so that we can support hosts with "weird" IO memory access requirments. For example, in "FSL eSDHC" SDHCI hardware all registers are 32 bit width, with big-endian addressing. That is, readb(0x2f) should turn into readb(0x2c), and readw(0x2c) should be translated to le16_to_cpu(readw(0x2e)). Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Diffstat (limited to 'drivers/mmc/host/Kconfig')
-rw-r--r--drivers/mmc/host/Kconfig7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 092baf66733..e8a7b50a01e 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -37,6 +37,13 @@ config MMC_SDHCI
If unsure, say N.
+config MMC_SDHCI_IO_ACCESSORS
+ bool
+ depends on MMC_SDHCI
+ help
+ This is silent Kconfig symbol that is selected by the drivers that
+ need to overwrite SDHCI IO memory accessors.
+
config MMC_SDHCI_PCI
tristate "SDHCI support on PCI bus"
depends on MMC_SDHCI && PCI