On Tue, Dec 15, 2020 at 09:39:18PM +0200, Andy Shevchenko wrote: > On Tue, Dec 15, 2020 at 9:36 PM Andy Shevchenko > <andy.shevche...@gmail.com> wrote: > > On Mon, Dec 14, 2020 at 11:44 PM Drew Fustini <d...@beagleboard.org> wrote: > > > On Mon, Dec 14, 2020 at 07:55:12PM +0200, Andy Shevchenko wrote: > > ... > > > > With regards to parent directory, I did discover there is > > > debugfs_lookup(), so I can get the dentry for "pinctrl" and create new > > > subdirectory inside of it. This is the structure now: > > > > > > /sys/kernel/debug/pinctrl/pinctrl_state/ocp:P2_35_pinmux/state > > > /sys/kernel/debug/pinctrl/pinctrl_state/ocp:P2_34_pinmux/state > > > /sys/kernel/debug/pinctrl/pinctrl_state/ocp:P2_33_pinmux/state > > > /sys/kernel/debug/pinctrl/pinctrl_state/ocp:P2_32_pinmux/state > > > etc.. > > Missed part to comment. > > I was talking about > > /sys/kernel/debug/pinctrl/<$PINCTRL>/mux/<$PIN> (maybe folder, maybe node)
Thanks for the example. What would the value be "<$PINCTRL>"? The name of the driver? The "ocp:Px_yy_pinmux" directory name comes from dev_name(dev). Is that the name you were referencing in "<$PIN>"? thanks, drew
