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

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>

diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c
index f546f4ae563af3d411ec6591fe9c3b122e4efaab..f347e5bc625497ddff270e3e9e4d2ddaf3ca6bc1 100644 (file)
--- a/drivers/usb/typec/tipd/core.c
+++ b/drivers/usb/typec/tipd/core.c
@@ -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");