On Tue 27 Apr 05:22 CDT 2021, Fenglin Wu wrote: > Add PWM driver to support PWM modules inside QCOM PMIC chips which are accessed > through SPMI bus. Normally, there would be multiple PWM modules with adjacent > address spaces present in one PMIC chip, and each PWM module has 0x100 size of > address space. With this driver, a pwm_chip with multiple pwm_device individuals > is created, and each pwm_device individual is corresponding to one PWM module. > Exposing this as individual pwm_chips will prevent us from enabling the LED related use cases (patterns and multicolor) that most versions of the hardware support. I proposed [1] a while ago and think this is a better approach. I'll take some time to respin this and send out the next version. [1] https://lore.kernel.org/linux-arm-msm/20201021201224.3430546-1-bjorn.andersson@xxxxxxxxxx/ Regards, Bjorn > Fenglin Wu (2): > dt-bindings: pwm: add bindings for PWM modules inside QCOM PMICs > pwm: pwm-qcom: add driver for PWM modules in QCOM PMICs > > .../devicetree/bindings/pwm/pwm-qcom.yaml | 51 ++ > drivers/pwm/Kconfig | 9 + > drivers/pwm/Makefile | 1 + > drivers/pwm/pwm-qcom.c | 585 +++++++++++++++++++++ > 4 files changed, 646 insertions(+) > create mode 100644 Documentation/devicetree/bindings/pwm/pwm-qcom.yaml > create mode 100644 drivers/pwm/pwm-qcom.c > > -- > Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > a Linux Foundation Collaborative Project. >
