The first part of this set extends the current PWM API to allow external
code to request a PWM Capture. Subsequent patches then make use of the
new API by providing a userspace offering via /sysfs. The final part of
the set supplies PWM Capture functionality into the already existing STi
PWM driver.
This patch-set has been tested end to end via /sysfs.
v2 => v3:
- Supply DT documentation changes
- Submit DTS additions as part of this set
- Default Capture and PWM-out number of channels to 0
- Do additional checking, to ensure at least one channel is requested
- Use global locking, instead of lock in device data
v1 => v2:
- API change
- Use a struct to carry the result back to the caller
- Use 'struct pwm' to store device specific data
- Make timeout configurable
- Don't use clear_bit(), instead use raw bit logic
- Propagate return value of platform_get_irq()
- Don't cast to (void *)
- Move to subsystem terminology (channels => devices)
- Remove channel select feature
- Enable Capture IP during capture
Lee Jones (20):
ARM: dts: STi: Rename properites in line with PWM naming conventions
ARM: dts: STiH407: Supply PWM Capture IRQ
ARM: dts: STiH407: Declare PWM Capture data lines via Pinctrl
ARM: dts: STiH416: Supply PWM Capture IRQs
ARM: dts: STiH416: Declare PWM Capture data lines via Pinctrl
ARM: dts: STiH416: Define PWM Capture clock
ARM: dts: STiH416: Define the number of PWM Capture channels
pwm: Add PWM Capture support
pwm: sti: Rename channel => device
pwm: sysfs: Add PWM Capture support
pwm: sti: Reorganise register names in preparation for new
functionality
pwm: sti: Only request clock rate when you need to
pwm: sti: Supply PWM Capture register addresses and bit locations
pwm: sti: Supply PWM Capture clock handling
pwm: sti: Initialise PWM Capture device data
pwm: sti: Add support for PWM Capture IRQs
pwm: sti: Add PWM Capture call-back
pwm: sti: It's now valid for number of PWM channels to be zero
pwm: sti: Take the opportunity to conduct a little house keeping
dt-bindings: pwm: sti: Update DT bindings with recent changes
Documentation/devicetree/bindings/pwm/pwm-st.txt | 10 +-
arch/arm/boot/dts/stih407-family.dtsi | 5 +-
arch/arm/boot/dts/stih407-pinctrl.dtsi | 3 +
arch/arm/boot/dts/stih416-pinctrl.dtsi | 5 +
arch/arm/boot/dts/stih416.dtsi | 12 +-
drivers/pwm/core.c | 27 ++
drivers/pwm/pwm-sti.c | 424 +++++++++++++++++++----
drivers/pwm/sysfs.c | 17 +
include/linux/pwm.h | 25 ++
9 files changed, 447 insertions(+), 81 deletions(-)
--
2.8.3
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