> On 23 Jun 2023, at 12.33, Wolfram Sang <wsa@xxxxxxxxxx> wrote: > > On Tue, May 09, 2023 at 03:21:59PM +0200, Sean Nyekjaer wrote: >> Add an atomic_xfer method to the driver so that it behaves correctly >> when controlling a PMIC that is responsible for device shutdown. >> >> The atomic_xfer method added is similar to the one from the i2c-mv64xxx >> driver. When running an atomic_xfer a bool flag in the driver data is >> set, the interrupt is not unmasked on transfer start, and the IRQ >> handler is manually invoked while waiting for pending transfers to >> complete. >> >> Signed-off-by: Sean Nyekjaer <sean@xxxxxxxxxx> > > Pierre-Yves, Alain, any further comments to this patch? > >> Is it okay to keep the DMA transfer in atomic? > > Will DMA actually run in atomic mode? > Hi Wolfram, Atomic is mainly(only) used for writing a single register in the PMIC for the stpmic. Guess that will not trigger any DMA use. But let’s wait for other comments… /Sean
