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authorYusuke Goda <yusuke.goda.sx@renesas.com>2010-08-30 11:50:19 +0100
committerSamuel Ortiz <sameo@linux.intel.com>2010-10-29 00:29:16 +0200
commitf1334fb3c3006ba109886158c0ad79512f928bc1 (patch)
tree99038a92a9e1bf77e96129473614fad4d99a0d33 /include
parent68accd7370a90b899ea6563ba9032e5a102ec1b5 (diff)
mmc: Allow 2 byte requests in 4-bit mode for tmio_mmc
Adjust the tmio_mmc block size check to accept 2-byte requests in 4-bit mode if the hardware supports it. Tested with the SDHI hardware block included in sh7724. Signed-off-by: Yusuke Goda <yusuke.goda.sx@renesas.com> Signed-off-by: Matt Fleming <matt@console-pimps.org> Acked-by: Magnus Damm <damm@opensource.se> Tested-by: Arnd Hannemann <arnd@arndnet.de> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/mfd/tmio.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/mfd/tmio.h b/include/linux/mfd/tmio.h
index 24c43bbad541..085f041197dc 100644
--- a/include/linux/mfd/tmio.h
+++ b/include/linux/mfd/tmio.h
@@ -52,6 +52,11 @@
/* tmio MMC platform flags */
#define TMIO_MMC_WRPROTECT_DISABLE (1 << 0)
+/*
+ * Some controllers can support a 2-byte block size when the bus width
+ * is configured in 4-bit mode.
+ */
+#define TMIO_MMC_BLKSZ_2BYTES (1 << 1)
int tmio_core_mmc_enable(void __iomem *cnf, int shift, unsigned long base);
int tmio_core_mmc_resume(void __iomem *cnf, int shift, unsigned long base);