On 22 March 2018 04:03, Guenter Roeck wrote:
> > static enum pdo_err tcpm_caps_err(struct tcpm_port *port, const u32 *pdo,
> > @@ -1308,6 +1347,26 @@ static enum pdo_err tcpm_caps_err(struct tcpm_port
> *port, const u32 *pdo,
> > pdo_min_voltage(pdo[i - 1])))
> > return PDO_ERR_DUPE_PDO;
> > break;
> > + /*
> > + * The Programmable Power Supply APDOs, if present,
> > + * shall be sent in Maximum Voltage order;
> > + * lowest to highest.
> > + */
> > + case PDO_TYPE_APDO:
> > + if (pdo_apdo_type(pdo[i]) != APDO_TYPE_PPS)
> > + break;
> > +
> > + if (pdo_pps_apdo_max_current(pdo[i]) <
> > + pdo_pps_apdo_max_current(pdo[i - 1]))
> > + return
> PDO_ERR_PPS_APDO_NOT_SORTED;
> > + else if ((pdo_pps_apdo_min_voltage(pdo[i]) ==
> > + pdo_pps_apdo_min_voltage(pdo[i - 1]))
> &&
> > + (pdo_pps_apdo_max_voltage(pdo[i]) ==
> > + pdo_pps_apdo_max_voltage(pdo[i - 1]))
> &&
> > + (pdo_pps_apdo_max_current(pdo[i]) ==
> > + pdo_pps_apdo_max_current(pdo[i - 1])))
>
> Unnecessary ( )
I have to say I think it's neater/clearer with than without but if that's
something you really don't like then I'll remove them.
> > +static int tcpm_pps_set_op_curr(struct tcpm_port *port, u16 op_curr)
> > +{
> > + unsigned int target_mw;
> > + int ret = 0;
> > +
>
> Unnecessary initialization.
Ok, will remove.
> > +static int tcpm_pps_set_out_volt(struct tcpm_port *port, u16 out_volt)
> > +{
> > + unsigned int target_mw;
> > + int ret = 0;
> > +
> Unnecessary initialization.
Ditto
> > + mutex_lock(&port->swap_lock);
> > + mutex_lock(&port->lock);
> > +
> > + if (!port->pps_data.active) {
> > + ret = -EOPNOTSUPP;
> > + goto port_unlock;
> > + }
> > +
> > + if (port->state != SNK_READY) {
> > + ret = -EAGAIN;
> > + goto port_unlock;
> > + }
> > +
> > + if ((out_volt < port->pps_data.min_volt) ||
> > + (out_volt > port->pps_data.max_volt)) {
>
> Unnecessary ( )
Ok.
> > + ret = -EINVAL;
> > + goto port_unlock;
> > + }
> > +
> > + target_mw = (port->pps_data.op_curr * out_volt) / 1000;
> > + if (target_mw < port->operating_snk_mw) {
> > + ret = -EINVAL;
> > + goto port_unlock;
> > + }
> > +
> > + reinit_completion(&port->pps_complete);
> > + port->pps_data.out_volt = out_volt;
> > + port->pps_status = 0;
> > + port->pps_pending = true;
> > + tcpm_set_state(port, SNK_NEGOTIATE_PPS_CAPABILITIES, 0);
> > + mutex_unlock(&port->lock);
> > +
> > + if (!wait_for_completion_timeout(&port->pps_complete,
> > + msecs_to_jiffies(PD_STATE_MACHINE_TIMEOUT)))
> > + ret = -ETIMEDOUT;
> > + else
> > + ret = port->pps_status;
> > +
> > + goto swap_unlock;
> > +
> > +port_unlock:
> > + mutex_unlock(&port->lock);
> > +swap_unlock:
> > + mutex_unlock(&port->swap_lock);
> > +
> > + return ret;
> > +}
> > +
> > +static int tcpm_pps_activate(struct tcpm_port *port, bool activate)
> > +{
> > + int ret = 0;
> > +
> > + mutex_lock(&port->swap_lock);
> > + mutex_lock(&port->lock);
> > +
> > + if (!port->pps_data.supported) {
> > + ret = -EOPNOTSUPP;
> > + goto port_unlock;
> > + }
> > +
> > + /* Trying to deactivate PPS when already deactivated so just bail */
> > + if ((!port->pps_data.active) && (!activate))
>
> Unnecessary ( )
Actually agree on this one :)
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