ARM: 5628/1: ep93xx: Introduce Pulse Width Modulator (PWM) driver
The EP93xx features two PWMs (one on the EP9307) with the following
features:
* Configurable dual output
* Separate input clocks for each PWM output
* 16-bit resolution
* Programmable pulse width (duty cycle), interval (frequency), and
polarity
This adds the necessary core support as well as the driver. A sysfs
interface is provided to control the PWM outputs.
Signed-off-by: Matthieu Crapet <mcrapet@gmail.com>
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 68ab39d..df1f86b 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -233,6 +233,19 @@
This driver can also be built as a module. If so, the module
will be called isl29003.
+config EP93XX_PWM
+ tristate "EP93xx PWM support"
+ depends on ARCH_EP93XX
+ help
+ This option enables device driver support for the PWM channels
+ on the Cirrus EP93xx processors. The EP9307 chip only has one
+ PWM channel all the others have two, the second channel is an
+ alternate function of the EGPIO14 pin. A sysfs interface is
+ provided to control the PWM channels.
+
+ To compile this driver as a module, choose M here: the module will
+ be called ep93xx_pwm.
+
source "drivers/misc/c2port/Kconfig"
source "drivers/misc/eeprom/Kconfig"
source "drivers/misc/cb710/Kconfig"
