Re: [PATCH 4/8] pwm: dwc: add of/platform support

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Hi

On 8/5/22 19:50, Ben Dooks wrote:
The dwc pwm controller can be used in non-PCI systems, so allow
either platform or OF based probing.

Signed-off-by: Ben Dooks <ben.dooks@xxxxxxxxxx>
---
v3:
  - changed compatible name
---
  drivers/pwm/Kconfig   |  5 ++--
  drivers/pwm/pwm-dwc.c | 53 +++++++++++++++++++++++++++++++++++++++++++
  2 files changed, 56 insertions(+), 2 deletions(-)

...

@@ -319,6 +320,58 @@ static struct pci_driver dwc_pwm_driver = {
module_pci_driver(dwc_pwm_driver);
...
+module_platform_driver(dwc_pwm_plat_driver);
+

These module_X_driver() macros cannot coexist in the same module and ideally the same kernel built should support probing both PCI and OF based systems in runtime, i.e. putting those macros under #ifdef is not ideal.

Usually this is solved either by common code has the platform device probing (with or without the OF support) and the PCI part is in another module which adds the platform device(s) or both platform and PCI device code are in own modules and call common code.



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