Messages in this thread Patch in this message | | | From | Dmitry Baryshkov <> | Date | Tue, 09 Apr 2024 18:29:18 +0300 | Subject | [PATCH v2 3/3] usb: typec: ucsi_glink: drop special handling for CCI_BUSY |
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Newer Qualcomm platforms (sm8450+) successfully handle busy state and send the Command Completion after sending the Busy state. Older devices have firmware bug and can not continue after sending the CCI_BUSY state, but the command that leads to CCI_BUSY is already forbidden by the NO_PARTNER_PDOS quirk.
Follow other UCSI glue drivers and drop special handling for CCI_BUSY event. Let the UCSI core properly handle this state.
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> --- drivers/usb/typec/ucsi/ucsi_glink.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-)
diff --git a/drivers/usb/typec/ucsi/ucsi_glink.c b/drivers/usb/typec/ucsi/ucsi_glink.c index 9ffea20020e7..fe9b951f5228 100644 --- a/drivers/usb/typec/ucsi/ucsi_glink.c +++ b/drivers/usb/typec/ucsi/ucsi_glink.c @@ -176,7 +176,8 @@ static int pmic_glink_ucsi_sync_write(struct ucsi *__ucsi, unsigned int offset, left = wait_for_completion_timeout(&ucsi->sync_ack, 5 * HZ); if (!left) { dev_err(ucsi->dev, "timeout waiting for UCSI sync write response\n"); - ret = -ETIMEDOUT; + /* return 0 here and let core UCSI code handle the CCI_BUSY */ + ret = 0; } else if (ucsi->sync_val) { dev_err(ucsi->dev, "sync write returned: %d\n", ucsi->sync_val); } @@ -243,11 +244,8 @@ static void pmic_glink_ucsi_notify(struct work_struct *work) ucsi_connector_change(ucsi->ucsi, con_num); } - if (ucsi->sync_pending && cci & UCSI_CCI_BUSY) { - ucsi->sync_val = -EBUSY; - complete(&ucsi->sync_ack); - } else if (ucsi->sync_pending && - (cci & (UCSI_CCI_ACK_COMPLETE | UCSI_CCI_COMMAND_COMPLETE))) { + if (ucsi->sync_pending && + (cci & (UCSI_CCI_ACK_COMPLETE | UCSI_CCI_COMMAND_COMPLETE))) { complete(&ucsi->sync_ack); } } -- 2.39.2
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