drivers/mfd: Add realtek pcie card reader driver

Realtek PCI-E card reader driver adapts requests from upper-level
sdmmc/memstick layer to the real physical card reader.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index acab3ef8a310..867af072d482 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -63,6 +63,15 @@ config MFD_SM501_GPIO
          lines on the SM501. The platform data is used to supply the
          base number for the first GPIO line to register.
 
+config MFD_RTSX_PCI
+        tristate "Support for Realtek PCI-E card reader"
+        depends on PCI
+        help
+          This supports for Realtek PCI-Express card reader including rts5209,
+          rts5229, rtl8411, etc. Realtek card reader supports access to many
+          types of memory cards, such as Memory Stick, Memory Stick Pro,
+          Secure Digital and MultiMediaCard.
+
 config MFD_ASIC3
         bool "Support for Compaq ASIC3"
         depends on GENERIC_HARDIRQS && GPIOLIB && ARM