#
# PWM infrastructure and devices
#

menuconfig GENERIC_PWM
	tristate "PWM Support"
	help
	  This enables PWM support through the generic PWM library.
	  If unsure, say N.

if GENERIC_PWM

config ATMEL_PWM
	tristate "Atmel AT32/AT91 PWM support"
	depends on AVR32 || ARCH_AT91
	help
	  This option enables device driver support for the PWMC
	  peripheral channels found on certain Atmel processors.
	  Pulse Width Modulation is used many for purposes, including
	  software controlled power-efficent backlights on LCD
	  displays, motor control, and waveform generation.  If
	  unsure, say N.

config NS921X_PWM
	tristate "Digi NS921X PWM support"
	depends on PROCESSOR_NS9215 && !CC9P9215JS_SERIAL_PORTA && !CC9P9215JS_SPI && !CC9P9215JS_SERIAL_PORTC_CTSRTSRXTX && !CC9P9215JS_SERIAL_PORTC_FULL
	help
	  This option enables device driver support for the PWMC
	  peripheral channels found on certain NetSilicon processors.
	  Pulse Width Modulation is used many for purposes, including
	  software controlled power-efficent backlights on LCD
	  displays, motor control, and waveform generation.  If
	  unsure, say N.

config S3C2443_PWM
	tristate "Digi S3C2443 PWM support"
	depends on MACH_CC9M2443JS || MACH_CCW9M2443JS
	help
	  This option enables device driver support for the PWM
	  timers on S3C2443 processor.
	  Pulse Width Modulation is used many for purposes, including
	  software controlled power-efficent backlights on LCD
	  displays, motor control, and waveform generation.  If
	  unsure, say N.

config S3C2443_PWM_PRESCALER_0
	int "Prescaler 0 (for timers 0 and 1)"
	range 0 255
	default 2
	depends on S3C2443_PWM
	help
	  This value sets the prescaler 0 shared by PWM timers 0 and 1.
	  Allowed values range between 0 and 255, and the period that can
	  be generated can be calculated using these formulas:

            max_period = (65535 * 16 * (prescaler + 1) / PCLK)

	    min_period = (2 * 2 * (prescaler + 1) / PCLK)

          For example, for a PCLK of 66.75MHz and a prescaler of 2
	  the maximum period is 47.12 ms, and the minimum is 180 ns.

	  NOTE: Prescaler 1 (shared by timers 2, 3, and 4) cannot be
	  modified because timer 4 is used as system timer with a
	  fixed prescaler of 2.

endif