Re: [PATCH v6 02/14] USB: typec: Add cmd timeout and response delay

Heikki Krogerus
2023-09-27T07:18:15Z

On Wed, Sep 27, 2023 at 10:00:50AM +0300, Heikki Krogerus wrote:
> On Sat, Sep 23, 2023 at 03:39:47AM -0400, Abdel Alkuor wrote:
> > Some commands in tps25750 take longer than 1 second
> > to complete, and some responses need some delay before
> > the result becomes available.
> >
> > Signed-off-by: Abdel Alkuor <alkuor@gmail.com>
>
> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>

Hold on!

You are not specifying the driver in the subject. You need to fix
that.

> > ---
> > Changes in v6:
> > - Use tps6598x_exec_cmd as a wrapper
> > Changes in v5:
> > - Incorporating tps25750 into tps6598x driver
> >
> > drivers/usb/typec/tipd/core.c | 19 +++++++++++++++----
> > 1 file changed, 15 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c
> > index 37b56ce75f39..32420c61660d 100644
> > --- a/drivers/usb/typec/tipd/core.c
> > +++ b/drivers/usb/typec/tipd/core.c
> > @@ -282,9 +282,10 @@ static void tps6598x_disconnect(struct tps6598x *tps, u32 status)
> > power_supply_changed(tps->psy);
> > }
> >
> > -static int tps6598x_exec_cmd(struct tps6598x *tps, const char *cmd,
> > +static int tps6598x_exec_cmd_tmo(struct tps6598x *tps, const char *cmd,
> > size_t in_len, u8 *in_data,
> > - size_t out_len, u8 *out_data)
> > + size_t out_len, u8 *out_data,
> > + u32 cmd_timeout_ms, u32 res_delay_ms)
> > {
> > unsigned long timeout;
> > u32 val;
> > @@ -307,8 +308,7 @@ static int tps6598x_exec_cmd(struct tps6598x *tps, const char *cmd,
> > if (ret < 0)
> > return ret;
> >
> > - /* XXX: Using 1s for now, but it may not be enough for every command. */
> > - timeout = jiffies + msecs_to_jiffies(1000);
> > + timeout = jiffies + msecs_to_jiffies(cmd_timeout_ms);
> >
> > do {
> > ret = tps6598x_read32(tps, TPS_REG_CMD1, &val);
> > @@ -321,6 +321,9 @@ static int tps6598x_exec_cmd(struct tps6598x *tps, const char *cmd,
> > return -ETIMEDOUT;
> > } while (val);
> >
> > + /* some commands require delay for the result to be available */
> > + mdelay(res_delay_ms);
> > +
> > if (out_len) {
> > ret = tps6598x_block_read(tps, TPS_REG_DATA1,
> > out_data, out_len);
> > @@ -345,6 +348,14 @@ static int tps6598x_exec_cmd(struct tps6598x *tps, const char *cmd,
> > return 0;
> > }
> >
> > +static int tps6598x_exec_cmd(struct tps6598x *tps, const char *cmd,
> > + size_t in_len, u8 *in_data,
> > + size_t out_len, u8 *out_data)
> > +{
> > + return tps6598x_exec_cmd_tmo(tps, cmd, in_len, in_data,
> > + out_len, out_data, 1000, 0);
> > +}
> > +
> > static int tps6598x_dr_set(struct typec_port *port, enum typec_data_role role)
> > {
> > const char *cmd = (role == TYPEC_DEVICE) ? "SWUF" : "SWDF";
> > --
> > 2.34.1
>
> --
> heikki

--
heikki