diff options
| -rw-r--r-- | drivers/usb/typec/tcpm/fusb302.c | 16 | ||||
| -rw-r--r-- | drivers/usb/typec/tcpm/tcpci.c | 12 | ||||
| -rw-r--r-- | drivers/usb/typec/tcpm/tcpm.c | 2 | ||||
| -rw-r--r-- | drivers/usb/typec/tcpm/wcove.c | 3 | ||||
| -rw-r--r-- | include/linux/usb/tcpm.h | 2 |
5 files changed, 22 insertions, 13 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, diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c index 12d983a75510..98a2455f779f 100644 --- a/drivers/usb/typec/tcpm/tcpci.c +++ b/drivers/usb/typec/tcpm/tcpci.c @@ -18,7 +18,8 @@ #include "tcpci.h" -#define PD_RETRY_COUNT 3 +#define PD_RETRY_COUNT_DEFAULT 3 +#define PD_RETRY_COUNT_3_0_OR_HIGHER 2 #define AUTO_DISCHARGE_DEFAULT_THRESHOLD_MV 3500 #define AUTO_DISCHARGE_PD_HEADROOM_MV 850 #define AUTO_DISCHARGE_PPS_HEADROOM_MV 1250 @@ -447,9 +448,8 @@ static int tcpci_set_vbus(struct tcpc_dev *tcpc, bool source, bool sink) return 0; } -static int tcpci_pd_transmit(struct tcpc_dev *tcpc, - enum tcpm_transmit_type type, - const struct pd_message *msg) +static int tcpci_pd_transmit(struct tcpc_dev *tcpc, enum tcpm_transmit_type type, + const struct pd_message *msg, unsigned int negotiated_rev) { struct tcpci *tcpci = tcpc_to_tcpci(tcpc); u16 header = msg ? le16_to_cpu(msg->header) : 0; @@ -497,7 +497,9 @@ static int tcpci_pd_transmit(struct tcpc_dev *tcpc, } } - reg = (PD_RETRY_COUNT << TCPC_TRANSMIT_RETRY_SHIFT) | (type << TCPC_TRANSMIT_TYPE_SHIFT); + /* nRetryCount is 3 in PD2.0 spec where 2 in PD3.0 spec */ + reg = ((negotiated_rev > PD_REV20 ? PD_RETRY_COUNT_3_0_OR_HIGHER : PD_RETRY_COUNT_DEFAULT) + << TCPC_TRANSMIT_RETRY_SHIFT) | (type << TCPC_TRANSMIT_TYPE_SHIFT); ret = regmap_write(tcpci->regmap, TCPC_TRANSMIT, reg); if (ret < 0) return ret; diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index 3bbc1f10af49..c73bc3a8356a 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -667,7 +667,7 @@ static int tcpm_pd_transmit(struct tcpm_port *port, tcpm_log(port, "PD TX, type: %#x", type); reinit_completion(&port->tx_complete); - ret = port->tcpc->pd_transmit(port->tcpc, type, msg); + ret = port->tcpc->pd_transmit(port->tcpc, type, msg, port->negotiated_rev); if (ret < 0) return ret; diff --git a/drivers/usb/typec/tcpm/wcove.c b/drivers/usb/typec/tcpm/wcove.c index 9b745f432c91..79ae63950050 100644 --- a/drivers/usb/typec/tcpm/wcove.c +++ b/drivers/usb/typec/tcpm/wcove.c @@ -356,7 +356,8 @@ static int wcove_set_pd_rx(struct tcpc_dev *tcpc, bool on) static int wcove_pd_transmit(struct tcpc_dev *tcpc, enum tcpm_transmit_type type, - const struct pd_message *msg) + const struct pd_message *msg, + unsigned int negotiated_rev) { struct wcove_typec *wcove = tcpc_to_wcove(tcpc); unsigned int info = 0; diff --git a/include/linux/usb/tcpm.h b/include/linux/usb/tcpm.h index e68aaa12886f..efaedd7e8a18 100644 --- a/include/linux/usb/tcpm.h +++ b/include/linux/usb/tcpm.h @@ -121,7 +121,7 @@ struct tcpc_dev { enum typec_cc_status cc); int (*try_role)(struct tcpc_dev *dev, int role); int (*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); int (*set_bist_data)(struct tcpc_dev *dev, bool on); int (*enable_frs)(struct tcpc_dev *dev, bool enable); void (*frs_sourcing_vbus)(struct tcpc_dev *dev); |