By default the driver sets the retry count to 3 (Default for PD 2.0).
Update this to 2, if the negotiated rev is PD 3.0.
Signed-off-by: Badhri Jagan Sridharan <badhri@xxxxxxxxxx>
---
drivers/usb/typec/tcpm/fusb302.c | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/typec/tcpm/fusb302.c b/drivers/usb/typec/tcpm/fusb302.c
index 99562cc65ca6..ebc46b9f776c 100644
--- a/drivers/usb/typec/tcpm/fusb302.c
+++ b/drivers/usb/typec/tcpm/fusb302.c
@@ -343,12 +343,11 @@ static int fusb302_sw_reset(struct fusb302_chip *chip)
return ret;
}
-static int fusb302_enable_tx_auto_retries(struct fusb302_chip *chip)
+static int fusb302_enable_tx_auto_retries(struct fusb302_chip *chip, u8 retry_count)
{
int ret = 0;
- ret = fusb302_i2c_set_bits(chip, FUSB_REG_CONTROL3,
- FUSB_REG_CONTROL3_N_RETRIES_3 |
+ ret = fusb302_i2c_set_bits(chip, FUSB_REG_CONTROL3, retry_count |
FUSB_REG_CONTROL3_AUTO_RETRY);
return ret;
@@ -399,7 +398,7 @@ static int tcpm_init(struct tcpc_dev *dev)
ret = fusb302_sw_reset(chip);
if (ret < 0)
return ret;
- ret = fusb302_enable_tx_auto_retries(chip);
+ ret = fusb302_enable_tx_auto_retries(chip, FUSB_REG_CONTROL3_N_RETRIES_3);
if (ret < 0)
return ret;
ret = fusb302_init_interrupt(chip);
@@ -1017,7 +1016,7 @@ static const char * const transmit_type_name[] = {
};
static int tcpm_pd_transmit(struct tcpc_dev *dev, enum tcpm_transmit_type type,
- const struct pd_message *msg)
+ const struct pd_message *msg, unsigned int negotiated_rev)
{
struct fusb302_chip *chip = container_of(dev, struct fusb302_chip,
tcpc_dev);
@@ -1026,6 +1025,13 @@ static int tcpm_pd_transmit(struct tcpc_dev *dev, enum tcpm_transmit_type type,
mutex_lock(&chip->lock);
switch (type) {
case TCPC_TX_SOP:
+ /* nRetryCount 3 in P2.0 spec, whereas 2 in PD3.0 spec */
+ ret = fusb302_enable_tx_auto_retries(chip, negotiated_rev > PD_REV20 ?
+ FUSB_REG_CONTROL3_N_RETRIES_2 :
+ FUSB_REG_CONTROL3_N_RETRIES_3);
+ if (ret < 0)
+ fusb302_log(chip, "Cannot update retry count ret=%d", ret);
+
ret = fusb302_pd_send_message(chip, msg);
if (ret < 0)
fusb302_log(chip,
--
2.29.2.454.gaff20da3a2-goog
