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usb: typec: ps883x: Rework ps883x_set()

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In preparation to extend it with new alt/USB modes, rework the code a
bit by changing the flow into a pair of switch statements.

Reviewed-by: Jack Pham <jack.pham@oss.qualcomm.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20251014-topic-ps883x_usb4-v1-2-e6adb1a4296e@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Konrad Dybcio 2025-10-14 18:06:46 +02:00 committed by Greg Kroah-Hartman
parent f83cb615cb
commit 6bebd9b777
1 changed files with 37 additions and 34 deletions
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71
drivers/usb/typec/mux/ps883x.c
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@ -99,44 +99,47 @@ static int ps883x_set(struct ps883x_retimer *retimer, struct typec_retimer_state
int cfg1 = 0x00;
int cfg2 = 0x00;
if (retimer->orientation == TYPEC_ORIENTATION_NONE ||
state->mode == TYPEC_STATE_SAFE) {
return ps883x_configure(retimer, cfg0, cfg1, cfg2);
}
if (state->alt && state->alt->svid != USB_TYPEC_DP_SID)
return -EINVAL;
if (retimer->orientation == TYPEC_ORIENTATION_REVERSE)
cfg0 |= CONN_STATUS_0_ORIENTATION_REVERSED;
switch (state->mode) {
case TYPEC_STATE_USB:
cfg0 |= CONN_STATUS_0_USB_3_1_CONNECTED;
break;
if (state->alt) {
switch (state->alt->svid) {
case USB_TYPEC_DP_SID:
cfg1 |= CONN_STATUS_1_DP_CONNECTED |
CONN_STATUS_1_DP_HPD_LEVEL;
case TYPEC_DP_STATE_C:
cfg1 = CONN_STATUS_1_DP_CONNECTED |
CONN_STATUS_1_DP_SINK_REQUESTED |
CONN_STATUS_1_DP_PIN_ASSIGNMENT_C_D |
CONN_STATUS_1_DP_HPD_LEVEL;
break;
case TYPEC_DP_STATE_D:
cfg0 |= CONN_STATUS_0_USB_3_1_CONNECTED;
cfg1 = CONN_STATUS_1_DP_CONNECTED |
CONN_STATUS_1_DP_SINK_REQUESTED |
CONN_STATUS_1_DP_PIN_ASSIGNMENT_C_D |
CONN_STATUS_1_DP_HPD_LEVEL;
break;
case TYPEC_DP_STATE_E:
cfg1 = CONN_STATUS_1_DP_CONNECTED |
CONN_STATUS_1_DP_HPD_LEVEL;
break;
default:
return -EOPNOTSUPP;
switch (state->mode) {
case TYPEC_DP_STATE_C:
cfg1 |= CONN_STATUS_1_DP_SINK_REQUESTED |
CONN_STATUS_1_DP_PIN_ASSIGNMENT_C_D;
fallthrough;
case TYPEC_DP_STATE_D:
cfg1 |= CONN_STATUS_0_USB_3_1_CONNECTED;
break;
default: /* MODE_E */
break;
}
break;
default:
dev_err(&retimer->client->dev, "Got unsupported SID: 0x%x\n",
state->alt->svid);
return -EOPNOTSUPP;
}
} else {
switch (state->mode) {
case TYPEC_STATE_SAFE:
/* USB2 pins don't even go through this chip */
case TYPEC_MODE_USB2:
break;
case TYPEC_STATE_USB:
case TYPEC_MODE_USB3:
cfg0 |= CONN_STATUS_0_USB_3_1_CONNECTED;
break;
default:
dev_err(&retimer->client->dev, "Got unsupported mode: %lu\n",
state->mode);
return -EOPNOTSUPP;
}
}
return ps883x_configure(retimer, cfg0, cfg1, cfg2);