On Fri, Mar 12, 2021 at 01:24:54PM +0100, Nicolas Saenz Julienne wrote: > Adds support to control the PWM bus available in official Raspberry Pi > PoE HAT. Only RPi's co-processor has access to it, so commands have to > be sent through RPi's firmware mailbox interface. > > Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@xxxxxxx> > > --- > > Changes since v7: > - Remove unwarranted RPI_PWM_DEF_DUTY_REG usage > > Changes since v6: > - Use %pe > - Round divisions properly > - Use dev_err_probe() > - Pass check_patch > > Changes since v3: > - Rename compatible string to be more explicit WRT to bus's limitations > > Changes since v2: > - Use devm_rpi_firmware_get() > - Rename driver > - Small cleanups > > Changes since v1: > - Use default pwm bindings and get rid of xlate() function > - Correct spelling errors > - Correct apply() function > - Round values > - Fix divisions in arm32 mode > - Small cleanups > > drivers/pwm/Kconfig | 9 ++ > drivers/pwm/Makefile | 1 + > drivers/pwm/pwm-raspberrypi-poe.c | 206 ++++++++++++++++++++++++++++++ > 3 files changed, 216 insertions(+) > create mode 100644 drivers/pwm/pwm-raspberrypi-poe.c Acked-by: Thierry Reding <thierry.reding@xxxxxxxxx>
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