On Mon, Sep 18, 2023 at 02:07:44PM +0300, Heikki Krogerus wrote:
> On Sun, Sep 17, 2023 at 11:26:27AM -0400, Abdel Alkuor wrote:
> > TPS25750 has a patch mode indicating the device requires
> > a configuration to get the device into operational mode
> >
> > Signed-off-by: Abdel Alkuor <alkuor@xxxxxxxxx>
> > ---
> > drivers/usb/typec/tipd/core.c | 12 +++++++++---
> > 1 file changed, 9 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c
> > index a8aee4e1aeba..6d2151325fbb 100644
> > --- a/drivers/usb/typec/tipd/core.c
> > +++ b/drivers/usb/typec/tipd/core.c
> > @@ -68,6 +68,7 @@ enum {
> > TPS_MODE_BOOT,
> > TPS_MODE_BIST,
> > TPS_MODE_DISC,
> > + TPS_MODE_PTCH,
> > };
> >
> > static const char *const modes[] = {
> > @@ -75,6 +76,7 @@ static const char *const modes[] = {
> > [TPS_MODE_BOOT] = "BOOT",
> > [TPS_MODE_BIST] = "BIST",
> > [TPS_MODE_DISC] = "DISC",
> > + [TPS_MODE_PTCH] = "PTCH",
> > };
> >
> > /* Unrecognized commands will be replaced with "!CMD" */
> > @@ -576,7 +578,7 @@ static void tps6598x_poll_work(struct work_struct *work)
> > &tps->wq_poll, msecs_to_jiffies(POLL_INTERVAL));
> > }
> >
> > -static int tps6598x_check_mode(struct tps6598x *tps)
> > +static int tps6598x_check_mode(struct tps6598x *tps, u8 *curr_mode)
> > {
> > char mode[5] = { };
> > int ret;
> > @@ -585,8 +587,11 @@ static int tps6598x_check_mode(struct tps6598x *tps)
> > if (ret)
> > return ret;
> >
> > - switch (match_string(modes, ARRAY_SIZE(modes), mode)) {
> > + *curr_mode = match_string(modes, ARRAY_SIZE(modes), mode);
> > +
> > + switch (*curr_mode) {
> > case TPS_MODE_APP:
> > + case TPS_MODE_PTCH:
>
> This check is OK, but it seems that you are not using that curr_mode
> for anything yet, so don't change the paramaters of this function in
> this patch.
>
> I would also just return the mode. Then this function would be used
> like this:
>
> ret = tps6598x_check_mode(...)
> if (ret < 0)
> return ret;
>
> Now mode = ret.
>
> > return 0;
> > case TPS_MODE_BOOT:
> > dev_warn(tps->dev, "dead-battery condition\n");
> > @@ -715,6 +720,7 @@ static int tps6598x_probe(struct i2c_client *client)
> > u32 vid;
> > int ret;
> > u64 mask1;
> > + u8 mode;
> >
> > tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
> > if (!tps)
> > @@ -759,7 +765,7 @@ static int tps6598x_probe(struct i2c_client *client)
> >
> > tps->irq_handler = irq_handler;
> > /* Make sure the controller has application firmware running */
> > - ret = tps6598x_check_mode(tps);
> > + ret = tps6598x_check_mode(tps, &mode);
>
> Actually, if you need to know the mode in here later, then I'm not
> sure tps6592x_check_mode() is useful after that. This is the only
> place it's called. Just read and check the mode in here directly at
> that point.
I will return the mode and check ret directly.
>
> thanks,
>
> --
> heikki
Thanks,
Abdel
