diff options
| author | Badhri Jagan Sridharan <badhri@google.com> | 2020-10-28 23:31:36 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-11-18 12:57:49 +0100 |
| commit | e1a97bf80a022cdd7a5746a7de8e19f02203d112 (patch) | |
| tree | 30783dfc02a76ca8b04522bccfd806f9f84f6d6b /drivers/usb/typec/tcpm/tcpci.h | |
| parent | f321a02caebdd0c56e167610cda2fa148cd96e8b (diff) | |
usb: typec: tcpci: Implement Auto discharge disconnect callbacks
vImplement callbacks for enabling/disabling
POWER_CONTROL.AutoDischargeDisconnect.
Programs VBUS_SINK_DISCONNECT_THRESHOLD based on the
voltage requested as sink, mode of operation.
The programmed threshold is based on vSinkDisconnect and
vSinkDisconnectPD values.
Add auto_discharge_disconnect to tdata to allow TCPC chip
level drivers enable AutoDischargeDisconnect.
Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20201029063138.1429760-9-badhri@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/typec/tcpm/tcpci.h')
| -rw-r--r-- | drivers/usb/typec/tcpm/tcpci.h | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/usb/typec/tcpm/tcpci.h b/drivers/usb/typec/tcpm/tcpci.h index b418fe11b527..3fe313655f0c 100644 --- a/drivers/usb/typec/tcpm/tcpci.h +++ b/drivers/usb/typec/tcpm/tcpci.h @@ -8,6 +8,8 @@ #ifndef __LINUX_USB_TCPCI_H #define __LINUX_USB_TCPCI_H +#include <linux/usb/typec.h> + #define TCPC_VENDOR_ID 0x0 #define TCPC_PRODUCT_ID 0x2 #define TCPC_BCD_DEV 0x4 @@ -67,6 +69,7 @@ #define TCPC_POWER_CTRL 0x1c #define TCPC_POWER_CTRL_VCONN_ENABLE BIT(0) +#define TCPC_POWER_CTRL_AUTO_DISCHARGE BIT(4) #define TCPC_FAST_ROLE_SWAP_EN BIT(7) #define TCPC_CC_STATUS 0x1d @@ -133,6 +136,8 @@ #define TCPC_VBUS_VOLTAGE 0x70 #define TCPC_VBUS_SINK_DISCONNECT_THRESH 0x72 +#define TCPC_VBUS_SINK_DISCONNECT_THRESH_LSB_MV 25 +#define TCPC_VBUS_SINK_DISCONNECT_THRESH_MAX 0x3ff #define TCPC_VBUS_STOP_DISCHARGE_THRESH 0x74 #define TCPC_VBUS_VOLTAGE_ALARM_HI_CFG 0x76 #define TCPC_VBUS_VOLTAGE_ALARM_LO_CFG 0x78 @@ -140,17 +145,22 @@ /* I2C_WRITE_BYTE_COUNT + 1 when TX_BUF_BYTE_x is only accessible I2C_WRITE_BYTE_COUNT */ #define TCPC_TRANSMIT_BUFFER_MAX_LEN 31 +struct tcpci; + /* - * @TX_BUF_BYTE_x_hidden + * @TX_BUF_BYTE_x_hidden: * optional; Set when TX_BUF_BYTE_x can only be accessed through I2C_WRITE_BYTE_COUNT. * @frs_sourcing_vbus: * Optional; Callback to perform chip specific operations when FRS * is sourcing vbus. + * @auto_discharge_disconnect: + * Optional; Enables TCPC to autonously discharge vbus on disconnect. */ -struct tcpci; struct tcpci_data { struct regmap *regmap; unsigned char TX_BUF_BYTE_x_hidden:1; + unsigned char auto_discharge_disconnect:1; + int (*init)(struct tcpci *tcpci, struct tcpci_data *data); int (*set_vconn)(struct tcpci *tcpci, struct tcpci_data *data, bool enable); |