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authorNicolas Saenz Julienne <nsaenzjulienne@suse.de>2019-01-11 12:45:55 +0100
committerNicolas Saenz Julienne <nsaenzjulienne@suse.de>2019-01-11 12:53:22 +0100
commit802639a7196b8db740229b04977911e951bb375d (patch)
tree63194a7177708b8ec04133bf8ae949c9953db745
parent5ce70c4b761f88611507750060d091424118e518 (diff)
usb: typec: tcpm: Extend the matching rules on PPS APDO
-rw-r--r--drivers/usb/typec/tcpm/tcpm.c35
1 files changed, 20 insertions, 15 deletions
diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c
index f1a1e46fb40f..dc73ed7f2a66 100644
--- a/drivers/usb/typec/tcpm/tcpm.c
+++ b/drivers/usb/typec/tcpm/tcpm.c
@@ -2208,7 +2208,8 @@ static unsigned int tcpm_pd_select_pps_apdo(struct tcpm_port *port)
unsigned int i, j, max_mw = 0, max_mv = 0;
unsigned int min_src_mv, max_src_mv, src_ma, src_mw;
unsigned int min_snk_mv, max_snk_mv;
- u32 pdo;
+ unsigned int max_op_mv;
+ u32 pdo, src, snk;
unsigned int src_pdo = 0, snk_pdo = 0;
/*
@@ -2258,16 +2259,18 @@ static unsigned int tcpm_pd_select_pps_apdo(struct tcpm_port *port)
continue;
}
- if (max_src_mv <= max_snk_mv &&
- min_src_mv >= min_snk_mv) {
+ if (min_src_mv <= max_snk_mv &&
+ max_src_mv >= min_snk_mv) {
+ max_op_mv = min(max_src_mv, max_snk_mv);
+ src_mw = (max_op_mv * src_ma) / 1000;
/* Prefer higher voltages if available */
if ((src_mw == max_mw &&
- min_src_mv > max_mv) ||
+ max_op_mv > max_mv) ||
src_mw > max_mw) {
src_pdo = i;
snk_pdo = j;
max_mw = src_mw;
- max_mv = max_src_mv;
+ max_mv = max_op_mv;
}
}
}
@@ -2280,16 +2283,18 @@ static unsigned int tcpm_pd_select_pps_apdo(struct tcpm_port *port)
}
if (src_pdo) {
- pdo = port->source_caps[src_pdo];
-
- port->pps_data.min_volt = pdo_pps_apdo_min_voltage(pdo);
- port->pps_data.max_volt = pdo_pps_apdo_max_voltage(pdo);
- port->pps_data.max_curr =
- min_pps_apdo_current(pdo, port->snk_pdo[snk_pdo]);
- port->pps_data.out_volt =
- min(pdo_pps_apdo_max_voltage(pdo), port->pps_data.out_volt);
- port->pps_data.op_curr =
- min(port->pps_data.max_curr, port->pps_data.op_curr);
+ src = port->source_caps[src_pdo];
+ snk = port->snk_pdo[snk_pdo];
+
+ port->pps_data.min_volt = max(pdo_pps_apdo_min_voltage(src),
+ pdo_pps_apdo_min_voltage(snk));
+ port->pps_data.max_volt = min(pdo_pps_apdo_max_voltage(src),
+ pdo_pps_apdo_max_voltage(snk));
+ port->pps_data.max_curr = min_pps_apdo_current(src, snk);
+ port->pps_data.out_volt = min(port->pps_data.max_volt,
+ port->pps_data.out_volt);
+ port->pps_data.op_curr = min(port->pps_data.max_curr,
+ port->pps_data.op_curr);
}
return src_pdo;