shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-05 02:21:52 +09:00
Code Issues Packages Projects Releases Wiki Activity

ANDROID: usb: typec: tcpci: Combine the parameters of set_auto_vbus_discharge_threshold

Browse Source 
The change Ifdb1ba19f7147da286ea5e044e84dfb679050a94 ("FROMGIT: usb:
typec: tcpci: Prevent Sink disconnection before vPpsShutdown in SPR
PPS") breaks the KMI. Prevent the breakage by combining the parameters
"requested_vbus_voltage" and "pps_apdo_min_voltage" to a single u32
variable whose value is selected according to the values of parameter
"mode" and parameter "pps_active".

Bug: 388029777
Change-Id: I85872b9490561d248169bc8e008f3d907cc6c3c0
Signed-off-by: Kyle Tso <kyletso@google.com>
This commit is contained in:
Kyle Tso
2025-01-22 22:17:16 +08:00
committed by Treehugger Robot
parent f84d5a5fad
commit 52a41f0bf1
3 changed files with 10 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/usb/typec/tcpm/tcpci.c
View File

@@ -341,8 +341,7 @@ static int tcpci_enable_auto_vbus_discharge(struct tcpc_dev *dev, bool enable)
}
static int tcpci_set_auto_vbus_discharge_threshold(struct tcpc_dev *dev, enum typec_pwr_opmode mode,
bool pps_active, u32 requested_vbus_voltage_mv,
u32 apdo_min_voltage_mv)
bool pps_active, u32 requested_vbus_voltage_mv)
{
struct tcpci *tcpci = tcpc_to_tcpci(dev);
unsigned int pwr_ctrl, threshold = 0;
@@ -368,7 +367,7 @@ static int tcpci_set_auto_vbus_discharge_threshold(struct tcpc_dev *dev, enum ty
* To prevent disconnect when the source is in Current Limit Mode.
* Set the threshold to the lowest possible voltage vPpsShutdown (min)
*/
threshold = VPPS_SHUTDOWN_MIN_PERCENT * apdo_min_voltage_mv / 100 -
threshold = VPPS_SHUTDOWN_MIN_PERCENT * requested_vbus_voltage_mv / 100 -
VSINKPD_MIN_IR_DROP_MV;
else
threshold = ((VSRC_NEW_MIN_PERCENT * requested_vbus_voltage_mv / 100) -

10
drivers/usb/typec/tcpm/tcpm.c
View File

@@ -2342,14 +2342,18 @@ static int tcpm_set_auto_vbus_discharge_threshold(struct tcpm_port *port,
enum typec_pwr_opmode mode, bool pps_active,
u32 requested_vbus_voltage)
{
u32 voltage;
int ret;
if (!port->tcpc->set_auto_vbus_discharge_threshold)
return 0;
ret = port->tcpc->set_auto_vbus_discharge_threshold(port->tcpc, mode, pps_active,
requested_vbus_voltage,
port->pps_data.min_volt);
if (mode == TYPEC_PWR_MODE_PD && pps_active)
voltage = port->pps_data.min_volt;
else
voltage = requested_vbus_voltage;
ret = port->tcpc->set_auto_vbus_discharge_threshold(port->tcpc, mode, pps_active, voltage);
tcpm_log_force(port,
"set_auto_vbus_discharge_threshold mode:%d pps_active:%c vbus:%u pps_apdo_min_volt:%u ret:%d",
mode, pps_active ? 'y' : 'n', requested_vbus_voltage,

3
include/linux/usb/tcpm.h
View File

@@ -150,8 +150,7 @@ struct tcpc_dev {
void (*frs_sourcing_vbus)(struct tcpc_dev *dev);
int (*enable_auto_vbus_discharge)(struct tcpc_dev *dev, bool enable);
int (*set_auto_vbus_discharge_threshold)(struct tcpc_dev *dev, enum typec_pwr_opmode mode,
bool pps_active, u32 requested_vbus_voltage,
u32 pps_apdo_min_voltage);
bool pps_active, u32 requested_vbus_voltage);
bool (*is_vbus_vsafe0v)(struct tcpc_dev *dev);
void (*set_partner_usb_comm_capable)(struct tcpc_dev *dev, bool enable);
void (*check_contaminant)(struct tcpc_dev *dev);