[PATCH v2] hwrng: imx-rngc - add runtime pm
Herbert Xu
herbert at gondor.apana.org.au
Sun Feb 9 02:25:35 PST 2025
On Sat, Feb 01, 2025 at 07:39:07PM +0100, Martin Kaiser wrote:
> Add runtime power management to the imx-rngc driver. Disable the
> peripheral clock when the rngc is idle.
>
> The callback functions from struct hwrng wake the rngc up when they're
> called and set it to idle on exit. Helper functions which are invoked
> from the callbacks assume that the rngc is active.
>
> Device init and probe are done before runtime pm is enabled. The
> peripheral clock will be handled manually during these steps. Do not use
> devres any more to enable/disable the peripheral clock, this conflicts
> with runtime pm.
>
> Signed-off-by: Martin Kaiser <martin at kaiser.cx>
> ---
> v2:
> - remove unnecessary err = 0; assignment
>
> drivers/char/hw_random/imx-rngc.c | 69 +++++++++++++++++++++++--------
> 1 file changed, 52 insertions(+), 17 deletions(-)
Patch applied. Thanks.
--
Email: Herbert Xu <herbert at gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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