On Wed, Sep 25, 2013 at 01:24:38PM +0900, Milo Kim wrote: > 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. > > Cc: Thierry Reding <thierry.reding@xxxxxxxxx> > Signed-off-by: Milo Kim <milo.kim@xxxxxx> > --- > * Patch v4 > No update, same as v3. > > * Patch v3 > Manual polarity not supported any more. > Add encapsulation functions for accessing internal data structure. > Use pwm_set_chip_data() and pwm_get_chip_data(). > And other code fixes based on Thierry's feedback. > > drivers/pwm/Kconfig | 10 ++ > drivers/pwm/Makefile | 1 + > drivers/pwm/pwm-lp3943.c | 314 ++++++++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 325 insertions(+) > create mode 100644 drivers/pwm/pwm-lp3943.c Acked-by: Thierry Reding <thierry.reding@xxxxxxxxx>
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