This series adds support for capture to stm32-pwm driver. Capture is based on DMAs. - First 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.
--- Changes in v4: - Lee's comments on patch 2 (mfd: stm32-timers: add support for dmas) Add kerneldoc header, better format comments. Changes in v3: - Dropped 2 precusor patches applied by Thierry in pwm tree: "pwm: stm32: fix, remove unused struct device" "pwm: stm32: protect common prescaler for all channels" - Note: this series applies on top on pwm tree - Implements Lee's comments on MFD part: rework stm32_timers_dma struct, exported routine prototype now use generic device struct, more various comments (see patch 2 changelog). 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 (6): 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 | 227 +++++++++++++++++- drivers/pwm/pwm-stm32.c | 257 +++++++++++++++++++++ include/linux/mfd/stm32-timers.h | 44 ++++ 5 files changed, 549 insertions(+), 2 deletions(-) -- 1.9.1