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usb: typec: tipd: Read data status in probe and cache its value

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Just like for power status we also need to keep track of data status to
be able to detect mode changes once we introduce de-bouncing for CD321x.
Read it during probe and keep a cached copy of its value.

Signed-off-by: Hector Martin <marcan@marcan.st>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Signed-off-by: Sven Peter <sven@kernel.org>
Link: https://lore.kernel.org/r/20250914-apple-usb3-tipd-v1-10-4e99c8649024@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Hector Martin 2025-09-14 12:56:15 +00:00 committed by Greg Kroah-Hartman
parent 77ed2f4538
commit 04041fd7d6
1 changed files with 4 additions and 0 deletions
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4
drivers/usb/typec/tipd/core.c
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@ -176,6 +176,7 @@ struct tps6598x {
int wakeup;
u32 status; /* status reg */
u32 data_status;
u16 pwr_status;
struct delayed_work wq_poll;
@ -538,6 +539,7 @@ static bool tps6598x_read_data_status(struct tps6598x *tps)
dev_err(tps->dev, "failed to read data status: %d\n", ret);
return false;
}
tps->data_status = data_status;
if (tps->data->trace_data_status)
tps->data->trace_data_status(data_status);
@ -1551,6 +1553,8 @@ static int tps6598x_probe(struct i2c_client *client)
if (status & TPS_STATUS_PLUG_PRESENT) {
if (!tps6598x_read_power_status(tps))
goto err_unregister_port;
if (!tps->data->read_data_status(tps))
goto err_unregister_port;
ret = tps6598x_connect(tps, status);
if (ret)
dev_err(&client->dev, "failed to register partner\n");