[RFC PATCH 0/3] pwm: omap: Add PWM support using dual-mode timers

Neil Brown
2015-10-19T01:46:55Z

Neil Armstrong <narmstrong@baylibre.com> writes:

> This patch is based on an earlier patch by NeilBrown which is based on
> a older patch from Grant Erickson which provided PWM devices using
> the 'legacy' interface.
>
> The pwm driver was renamed to not be confused with the OMAP4 PWM dedicated
> hardware and was cleaned with the review from Thierry Reding.
>
> The first patch introduces a way to select to dmtimer clock source via a
> clocks binding and a dedicated function wit the legacy fallback.
>
> In order to prepare for the future form of the dmtimer (clksource or whatever)
> the first patch introduces the PWM driver with all the dmtimer calls into a
> platform data structure.
>
> The structure is then filled in plat-omap and added as auxdata for the
> ti,pwm-dmtimer-omap compatible nodes.
>
> Cc: Grant Erickson <marathon96@gmail.com>
> Cc: NeilBrown <neilb@suse.de>
> Cc: Joachim Eastwood <manabian@gmail.com>
> Suggested-by: Tony Lindgren <tony@atomide.com>
>
> Neil Armstrong (3):
> arm: plat-omap: dmtimer: Add clock source from DT
> pwm: Add PWM driver for OMAP using dual-mode timers
> arm: plat-omap: Add PWM dmtimer platforma data quirks
>
> .../devicetree/bindings/pwm/pwm-omap-dmtimer.txt | 18 ++
> arch/arm/mach-omap2/pdata-quirks.c | 23 ++
> arch/arm/plat-omap/dmtimer.c | 32 +-
> drivers/pwm/Kconfig | 9 +
> drivers/pwm/Makefile | 1 +
> drivers/pwm/pwm-omap-dmtimer.c | 322 +++++++++++++++++++++
> include/linux/platform_data/pwm_omap_dmtimer.h | 69 +++++
> 7 files changed, 472 insertions(+), 2 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/pwm/pwm-omap-dmtimer.txt
> create mode 100644 drivers/pwm/pwm-omap-dmtimer.c
> create mode 100644 include/linux/platform_data/pwm_omap_dmtimer.h
>

Thanks for much for doing this!
I haven't looked and wont have a chance for a least a couple of weeks,
but I'm very encouraged that someone is pursuing it.

Thanks,
NeilBrown
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