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usb: typec: tipd: Only update power status on IRQ 

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@sigxcpu.org>
Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20220317154518.4082046-2-sebastian.krzyszkowiak@puri.sm
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Guido Günther 2022-03-17 16:45:12 +01:00 committed by Greg Kroah-Hartman
parent 38c695e1e2
commit 92440202a8
1 changed files with 12 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
drivers/usb/typec/tipd/core.c
View File

@ -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");