Merged in paulpatience/nuttx/pwm (pull request #29)

PWM: Add support for multiple output channels per timer

drivers/Kconfig

@@ -139,6 +139,10 @@ config ARCH_HAVE_PWM_PULSECOUNT
 	bool
 	default n
 
+config ARCH_HAVE_PWM_MULTICHAN
+	bool
+	default n
+
 menuconfig PWM
 	bool "PWM Driver Support"
 	default n
@@ -147,6 +151,7 @@ menuconfig PWM
 		See include/nuttx/pwm.h for further PWM driver information.
 
 if PWM
+
 config PWM_PULSECOUNT
 	bool "PWM Pulse Count Support"
 	default n
@@ -157,6 +162,26 @@ config PWM_PULSECOUNT
 		hardware will support a fixed pulse count, then this configuration
 		should be set to enable the capability.
 
+config PWM_MULTICHAN
+	bool "PWM Multiple Output Channel Support"
+	default n
+	depends on ARCH_HAVE_PWM_MULTICHAN
+	depends on !PWM_PULSECOUNT
+	---help---
+		Enables support for multiple output channels per timer.
+
+if PWM_MULTICHAN
+
+config PWM_NCHANNELS
+	int "Number of Output Channels Per Timer"
+	default 1
+	range 1 4
+	---help---
+		Specifies the number of output channels per timer.  Each timer
+		may support fewer output channels than this value.
+
+endif # PWM_MULTICHAN
+
 endif # PWM
 
 config ARCH_HAVE_I2CRESET