pwm: pca9586: Convert to waveform API

[PATCH 0/5] pwm: pca9586: Convert to waveform API

Posted by Uwe Kleine-König 2 months, 1 week ago

Hello,

this series eventually converts the pca9685 driver to the new waveform
callbacks. It starts with a few minor fixes and cleanups before the
actual conversion.

Note that this driver was the only one that supported the usage_power
flag and when it was set increased the duty_offset. Now duty_offset is
under control of the consumer, so no functionallity is lost.

Patch #4 drops GPIO support. Though the internal details differ a bit,
this is superseded by patch
https://lore.kernel.org/linux-pwm/20250717151117.1828585-2-u.kleine-koenig@baylibre.com
which provides generic GPIO support for waveform PWM chips.

Best regards
Uwe

Uwe Kleine-König (5):
  pwm: pca9685: Don't disable hardware in .free()
  pwm: pca9685: Use bulk write to atomicially update registers
  pwm: pca9685: Make use of register caching in regmap
  pwm: pca9685: Drop GPIO support
  pwm: pca9586: Convert to waveform API

 drivers/pwm/pwm-pca9685.c | 555 ++++++++++++++++----------------------
 1 file changed, 229 insertions(+), 326 deletions(-)


base-commit: 68b9272ca7ac948b71aba482ef8244dee8032f46
prerequisite-patch-id: 917be1150626d7632f99929ac9f7dc1449864979
-- 
2.50.0

Re: [PATCH 0/5] pwm: pca9586: Convert to waveform API

Posted by Uwe Kleine-König 1 month, 2 weeks ago

Hello,

On Tue, Jul 29, 2025 at 12:35:59PM +0200, Uwe Kleine-König wrote:
> this series eventually converts the pca9685 driver to the new waveform
> callbacks. It starts with a few minor fixes and cleanups before the
> actual conversion.
> 
> Note that this driver was the only one that supported the usage_power
> flag and when it was set increased the duty_offset. Now duty_offset is
> under control of the consumer, so no functionallity is lost.
> 
> Patch #4 drops GPIO support. Though the internal details differ a bit,
> this is superseded by patch
> https://lore.kernel.org/linux-pwm/20250717151117.1828585-2-u.kleine-koenig@baylibre.com
> which provides generic GPIO support for waveform PWM chips.

Applied to

	https://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux.git pwm/for-next

with a minor conflcit due to commit d9d87d90cc0b ("treewide: rename
GPIO set callbacks back to their original names").

Best regards
Uwe