[RESEND PATCH v2 0/8] Add support for PWM input capture on STM32

Fabrice Gasnier
2018-02-14T10:04:31Z

This series adds support for capture to stm32-pwm driver.
Capture is based on DMAs.
- First two patches are precursor patches
- Subsequent two patches add support for requesting DMAs to MFD core
- Next three patches add support for capture to stm32-pwm driver
- This has been tested on stm32429i-eval board.

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Resend v2:
- Add collected Acks

Changes in v2:
- Abstract DMA handling from child driver: move it to MFD core
- Rework pwm capture routines to adopt this change
- Comment on optional dma support, beautify DMAs probe

Fabrice Gasnier (8):
pwm: stm32: fix, remove unused struct device
pwm: stm32: protect common prescaler for all channels
dt-bindings: mfd: stm32-timers: add support for dmas
mfd: stm32-timers: add support for dmas
pwm: stm32: add capture support
pwm: stm32: improve capture by tuning counter prescaler
pwm: stm32: use input prescaler to improve period capture
ARM: dts: stm32: Enable pwm3 input capture on stm32f429i-eval

.../devicetree/bindings/mfd/stm32-timers.txt | 20 ++
arch/arm/boot/dts/stm32429i-eval.dts | 3 +
drivers/mfd/stm32-timers.c | 215 +++++++++++++++-
drivers/pwm/pwm-stm32.c | 276 ++++++++++++++++++++-
include/linux/mfd/stm32-timers.h | 39 +++
5 files changed, 547 insertions(+), 6 deletions(-)

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1.9.1