On Tue, Dec 24, 2019 at 5:41 AM Deepak Ukey <deepak.ukey@xxxxxxxxxxxxx> wrote: > > From: Deepak Ukey <Deepak.Ukey@xxxxxxxxxxxxx> > > Added IOCTL functionality for GPIO. > The SPCv controller provides 24 GPIO signals. The first 12 signals > [11:0] and the last 4 signals [23:20] are for customer use. Eight > signals [19:12] are reserved for the SPCv controller firmware. > Whenever the host performs GPIO setup or a read/write operation > using the GPIO command the host needs to make sure that it does > not disturb the GPIO configuration for the bits [19:12]. > Each signal can be configured either as an input or as an output. > When configured as an output, the host can use the GPIO Command to > set the desired level. GPIO inputs can also be configured so that > the SPCv controller sends the GPIO Event notification when specific > GPIO events occur. > Different GPIO features implemented: > 1) GPIO Pin Setup > 2) GPIO Event Setup > 3) GPIO Read > 4) GPIO Write > I think you can also implement lldd_write_gpio callback, so smp_utils can also control gpio, right?
