FMC: add a char-device mezzanine driver

This driver exports the memory area associated with the mezzanine card
as a misc device, so users can access registers.

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
Acked-by: Juan David Gonzalez Cobas <dcobas@cern.ch>
Acked-by: Emilio G. Cota <cota@braap.org>
Acked-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/fmc/Kconfig b/drivers/fmc/Kconfig
index 2bb1953c9681..c01cf45bc3d8 100644
--- a/drivers/fmc/Kconfig
+++ b/drivers/fmc/Kconfig
@@ -40,4 +40,12 @@ config FMC_WRITE_EEPROM
           its binary and the function carrier->reprogram to actually do it.
           It is useful when the mezzanines are produced.
 
+config FMC_CHARDEV
+        tristate "FMC mezzanine driver that registers a char device"
+        help
+          This driver matches every mezzanine device and allows user
+          space to read and write registers using a char device. It
+          can be used to write user-space drivers, or just get
+          aquainted with a mezzanine before writing its specific driver.
+
 endif # FMC