pwm: Add SPEAr PWM chip driver support

Add support for PWM chips present on SPEAr platforms. These PWM
chips support 4 channel output with programmable duty cycle and
frequency.

More details on these PWM chips can be obtained from relevant
chapter of reference manual, present at following[1] location.

1. http://www.st.com/internet/mcu/product/251211.jsp

Cc: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Vipin Kumar <vipin.kumar@st.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/pwm/Makefile b/drivers/pwm/Makefile
index acfe4821c58b..3b3f4c9aa4ef 100644
--- a/drivers/pwm/Makefile
+++ b/drivers/pwm/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_PWM_MXS)		+= pwm-mxs.o
 obj-$(CONFIG_PWM_PUV3)          += pwm-puv3.o
 obj-$(CONFIG_PWM_PXA)           += pwm-pxa.o
 obj-$(CONFIG_PWM_SAMSUNG)       += pwm-samsung.o
+obj-$(CONFIG_PWM_SPEAR)         += pwm-spear.o
 obj-$(CONFIG_PWM_TEGRA)         += pwm-tegra.o
 obj-$(CONFIG_PWM_TIECAP)        += pwm-tiecap.o
 obj-$(CONFIG_PWM_TIEHRPWM)      += pwm-tiehrpwm.o