pwm: Add LP3943 PWM driver
This is the other of the LP3943 MFD driver.
LP3943 can be used as a PWM generator, up to 2 channels.
* Two PWM generators supported
* Supported PWM operations
request, free, config, enable and disable
* Pin assignment
A driver data, 'pin_used' is checked when a PWM is requested.
If the output pin is already assigned, then returns as failure.
If the pin is available, 'pin_used' is set.
When the PWM is not used anymore, then it is cleared.
It is defined as unsigned long type for atomic bit operation APIs,
but only LSB 16bits are used because LP3943 has 16 outputs.
Signed-off-by: Milo Kim <milo.kim@ti.com>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig
index eece329..7acab93 100644
--- a/drivers/pwm/Kconfig
+++ b/drivers/pwm/Kconfig
@@ -90,6 +90,16 @@
To compile this driver as a module, choose M here: the module
will be called pwm-jz4740.
+config PWM_LP3943
+ tristate "TI/National Semiconductor LP3943 PWM support"
+ depends on MFD_LP3943
+ help
+ Generic PWM framework driver for LP3943 which supports two PWM
+ channels.
+
+ To compile this driver as a module, choose M here: the module
+ will be called pwm-lp3943.
+
config PWM_LPC32XX
tristate "LPC32XX PWM support"
depends on ARCH_LPC32XX