This patch series adds power management support for STM32 LP Timer: - PWM driver - Document the pinctrl states for sleep mode It also adds device link between the PWM consumer and the PWM provider. This allows proper sequencing for suspend/resume (e.g. user will likely do a pwm_disable() before the PWM provider suspend executes), see [1]. [1] https://lkml.org/lkml/2019/2/5/770 --- resend v5: - update collected acks Changes in v5: - improve a warning message, fix a style issue. Changes in v4: - improve error handling when adding the PWM consumer device link. Changes in v3: - Move the device_link_add() call to of_pwm_get() as discussed with Uwe. Changes in v2: - Don't disable PWM channel in PWM provider: rather refuse to suspend and report an error as suggested by Uwe and Thierry. - Add patch 3/3 to propose device link addition. - No updates for STM32 LP Timer IIO driver. Patches can be send separately. Fabrice Gasnier (3): dt-bindings: pwm-stm32-lp: document pinctrl sleep state pwm: stm32-lp: Add power management support pwm: core: add consumer device link .../devicetree/bindings/pwm/pwm-stm32-lp.txt | 9 ++-- drivers/pwm/core.c | 50 ++++++++++++++++++++-- drivers/pwm/pwm-stm32-lp.c | 25 +++++++++++ include/linux/pwm.h | 6 ++- 4 files changed, 82 insertions(+), 8 deletions(-) -- 2.7.4
