leds: simple driver for pwm driven LEDs

Add a simple driver for pwm driver LEDs.  pwm_id and period can be defined
in board file.  It is developed for pxa, however it is probably generic
enough to be used on other platforms with pwm.

Signed-off-by: Luotao Fu <l.fu@pengutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 16a94088beee..89ea7ef39fe4 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -197,6 +197,12 @@ config LEDS_DAC124S085
           This option enables support for DAC124S085 SPI DAC from NatSemi,
           which can be used to control up to four LEDs.
 
+config LEDS_PWM
+        tristate "PWM driven LED Support"
+        depends on LEDS_CLASS && HAVE_PWM
+        help
+          This option enables support for pwm driven LEDs
+
 comment "LED Triggers"
 
 config LEDS_TRIGGERS