Re: [PATCH 4/9] gpio: regmap: add the .get_direction() callback
From: Andrew Lunn <andrew@lunn.ch>
Date: 2025-07-11 17:45:50
Also in:
linux-devicetree, linux-gpio, lkml
From: Andrew Lunn <andrew@lunn.ch>
Date: 2025-07-11 17:45:50
Also in:
linux-devicetree, linux-gpio, lkml
On Fri, Jul 11, 2025 at 07:43:13PM +0200, Linus Walleij wrote:
On Wed, Jul 9, 2025 at 5:09 PM Andrew Lunn [off-list ref] wrote:quoted
This is not my area, so i will deffer to the GPIO Maintainers. However, it is not clear to me what get_direction() should return.This callback should return the current direction as set up in the hardware. A major usecase is that this is called when the gpiochip is registered to read out all the current directions of the GPIO lines, so the kernel has a clear idea of the state of the hardware. Calling this should ideally result in a read of the status from a hardware register.
O.K, so completely different to what is proposed in this patch. Maybe you can suggest a better name. Andrew