On Thu, Mar 17, 2022 at 04:45:12PM +0100, Sebastian Krzyszkowiak wrote:
> From: Guido Günther <agx@xxxxxxxxxxx>
>
> Instead of refetching power status cache it and only update it when a
> change is signalled via irq. This simplifies tracing and adding more
> supply properties in follow up patches.
>
> Signed-off-by: Guido Günther <agx@xxxxxxxxxxx>
> Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@xxxxxxx>
Reviewed-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
> ---
> drivers/usb/typec/tipd/core.c | 32 ++++++++++++--------------------
> 1 file changed, 12 insertions(+), 20 deletions(-)
>
> diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c
> index 16b4560216ba..dfbba5ae9487 100644
> --- a/drivers/usb/typec/tipd/core.c
> +++ b/drivers/usb/typec/tipd/core.c
> @@ -93,6 +93,8 @@ struct tps6598x {
> struct power_supply *psy;
> struct power_supply_desc psy_desc;
> enum power_supply_usb_type usb_type;
> +
> + u16 pwr_status;
> };
>
> static enum power_supply_property tps6598x_psy_props[] = {
> @@ -230,17 +232,12 @@ static int tps6598x_connect(struct tps6598x *tps, u32 status)
> {
> struct typec_partner_desc desc;
> enum typec_pwr_opmode mode;
> - u16 pwr_status;
> int ret;
>
> if (tps->partner)
> return 0;
>
> - ret = tps6598x_read16(tps, TPS_REG_POWER_STATUS, &pwr_status);
> - if (ret < 0)
> - return ret;
> -
> - mode = TPS_POWER_STATUS_PWROPMODE(pwr_status);
> + mode = TPS_POWER_STATUS_PWROPMODE(tps->pwr_status);
>
> desc.usb_pd = mode == TYPEC_PWR_MODE_PD;
> desc.accessory = TYPEC_ACCESSORY_NONE; /* XXX: handle accessories */
> @@ -455,6 +452,7 @@ static bool tps6598x_read_power_status(struct tps6598x *tps)
> dev_err(tps->dev, "failed to read power status: %d\n", ret);
> return false;
> }
> + tps->pwr_status = pwr_status;
> trace_tps6598x_power_status(pwr_status);
>
> return true;
> @@ -601,15 +599,8 @@ static const struct regmap_config tps6598x_regmap_config = {
> static int tps6598x_psy_get_online(struct tps6598x *tps,
> union power_supply_propval *val)
> {
> - int ret;
> - u16 pwr_status;
> -
> - ret = tps6598x_read16(tps, TPS_REG_POWER_STATUS, &pwr_status);
> - if (ret < 0)
> - return ret;
> -
> - if (TPS_POWER_STATUS_CONNECTION(pwr_status) &&
> - TPS_POWER_STATUS_SOURCESINK(pwr_status)) {
> + if (TPS_POWER_STATUS_CONNECTION(tps->pwr_status) &&
> + TPS_POWER_STATUS_SOURCESINK(tps->pwr_status)) {
> val->intval = 1;
> } else {
> val->intval = 0;
> @@ -622,15 +613,11 @@ static int tps6598x_psy_get_prop(struct power_supply *psy,
> union power_supply_propval *val)
> {
> struct tps6598x *tps = power_supply_get_drvdata(psy);
> - u16 pwr_status;
> int ret = 0;
>
> switch (psp) {
> case POWER_SUPPLY_PROP_USB_TYPE:
> - ret = tps6598x_read16(tps, TPS_REG_POWER_STATUS, &pwr_status);
> - if (ret < 0)
> - return ret;
> - if (TPS_POWER_STATUS_PWROPMODE(pwr_status) == TYPEC_PWR_MODE_PD)
> + if (TPS_POWER_STATUS_PWROPMODE(tps->pwr_status) == TYPEC_PWR_MODE_PD)
> val->intval = POWER_SUPPLY_USB_TYPE_PD;
> else
> val->intval = POWER_SUPPLY_USB_TYPE_C;
> @@ -837,6 +824,11 @@ static int tps6598x_probe(struct i2c_client *client)
> fwnode_handle_put(fwnode);
>
> if (status & TPS_STATUS_PLUG_PRESENT) {
> + ret = tps6598x_read16(tps, TPS_REG_POWER_STATUS, &tps->pwr_status);
> + if (ret < 0) {
> + dev_err(tps->dev, "failed to read power status: %d\n", ret);
> + goto err_role_put;
> + }
> ret = tps6598x_connect(tps, status);
> if (ret)
> dev_err(&client->dev, "failed to register partner\n");
> --
> 2.35.1
--
heikki
