lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

mmc: Allow 2 byte requests in 4-bit mode for tmio_mmc

Browse Source 
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>
This commit is contained in:
Yusuke Goda
2010-08-30 11:50:19 +01:00
committed by Samuel Ortiz
parent 68accd7370
commit f1334fb3c3
3 changed files with 23 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
include/linux/mfd/tmio.h
View File

@@ -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);