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pn53x_idle: call driver-dependent PowerDown & do InRelease first, skip redundant InDeselect

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This commit is contained in:
Philippe Teuwen 2013-01-31 01:16:37 +01:00
parent 1682a86166
commit 683505f39b
1 changed files with 6 additions and 11 deletions
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17
libnfc/chips/pn53x.c
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@ -947,30 +947,25 @@ pn53x_idle(struct nfc_device *pnd)
if ((res = pn53x_InRelease(pnd, 0)) < 0) {
return res;
}
if (CHIP_DATA(pnd)->type == PN532) {
if ((CHIP_DATA(pnd)->type == PN532) && (pnd->driver->powerdown)) {
// Use PowerDown to go in "Low VBat" power mode
if ((res = pn53x_PowerDown(pnd)) < 0) {
if ((res = pnd->driver->powerdown(pnd)) < 0) {
return res;
}
}
break;
case INITIATOR:
// Deselect all active communications
if ((res = pn53x_InDeselect(pnd, 0)) < 0) {
// Use InRelease to go in "Standby mode"
if ((res = pn53x_InRelease(pnd, 0)) < 0) {
return res;
}
// Disable RF field to avoid heating
if ((res = nfc_device_set_property_bool(pnd, NP_ACTIVATE_FIELD, false)) < 0) {
return res;
}
if (CHIP_DATA(pnd)->type == PN532) {
if ((CHIP_DATA(pnd)->type == PN532) && (pnd->driver->powerdown)) {
// Use PowerDown to go in "Low VBat" power mode
if ((res = pn53x_PowerDown(pnd)) < 0) {
return res;
}
} else {
// Use InRelease to go in "Standby mode"
if ((res = pn53x_InRelease(pnd, 0)) < 0) {
if ((res = pnd->driver->powerdown(pnd)) < 0) {
return res;
}
}