On Wed, Feb 24, 2021 at 05:20:21PM +0900, William Breathitt Gray wrote: > On Wed, Feb 24, 2021 at 05:11:03PM +0900, William Breathitt Gray wrote: > > On Wed, Feb 24, 2021 at 08:35:06AM +0100, Oleksij Rempel wrote: > > > On Wed, Feb 24, 2021 at 11:34:06AM +0900, William Breathitt Gray wrote: > > > > Alternatively, we can take a more generic approach: ignore the GPIO > > > > names and focus solely on the IRQ lines; because the GPIO lines will > > > > always be tied to respective IRQ lines here, using the IRQ as the basis > > > > of the name should always be valid. The "name" member of the struct > > > > irq_chip can work for this. I haven't tested this, but I think something > > > > like this would work: > > > > > > > > cnt_signals[0].name = irq_get_chip(priv->irq)->name; > > > > > > ok, i'll take a look at it. > > > > If that doesn't work, then use devm_kasprintf() to generate the name > > based on the IRQ line number. The idea here is that the user should be > > able to identify that the Signal component for this Count is the > > respective IRQ. > > > > William Breathitt Gray > > I realized that these irq_chip names are often just the device name > which isn't very useful either. :-( > > In that case, I suppose we really are just left with generating the name > based on the IRQ line number then. This should be fine then: > > cnt_signals[0].name = devm_kasprintf(dev, GFP_KERNEL, "IRQ %d", > priv->irq); > if (!cnt_signals[0].name) > return -ENOMEM; > > I think this would make it clear to the user that this Signal is the > respective IRQ (whether sourced from GPIO or not). ack, with one correction. cnt_signals should be allocated, otherwise this value will be set per driver not per device. Regards, Oleksij -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
