Blackfin: pwm: implement linux/pwm.h API

For now, this only supports gptimers.  Support for dedicated PWM devices
as found on newer parts to come.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index d619b17c4413..c7476295de80 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -953,6 +953,16 @@ config BFIN_GPTIMERS
           To compile this driver as a module, choose M here: the module
           will be called gptimers.
 
+config HAVE_PWM
+        tristate "Enable PWM API support"
+        depends on BFIN_GPTIMERS
+        help
+          Enable support for the Pulse Width Modulation framework (as
+          found in linux/pwm.h).
+
+          To compile this driver as a module, choose M here: the module
+          will be called pwm.
+
 choice
         prompt "Uncached DMA region"
         default DMA_UNCACHED_1M