diff options
Diffstat (limited to 'drivers/nfc')
| -rw-r--r-- | drivers/nfc/pn533/pn533.c | 12 | ||||
| -rw-r--r-- | drivers/nfc/pn533/pn533.h | 9 |
2 files changed, 20 insertions, 1 deletions
diff --git a/drivers/nfc/pn533/pn533.c b/drivers/nfc/pn533/pn533.c index a172a32aa9d9..64836c727aee 100644 --- a/drivers/nfc/pn533/pn533.c +++ b/drivers/nfc/pn533/pn533.c @@ -2458,6 +2458,9 @@ static int pn533_dev_up(struct nfc_dev *nfc_dev) { struct pn533 *dev = nfc_get_drvdata(nfc_dev); + if (dev->phy_ops->dev_up) + dev->phy_ops->dev_up(dev); + if (dev->device_type == PN533_DEVICE_PN532) { int rc = pn532_sam_configuration(nfc_dev); @@ -2470,7 +2473,14 @@ static int pn533_dev_up(struct nfc_dev *nfc_dev) static int pn533_dev_down(struct nfc_dev *nfc_dev) { - return pn533_rf_field(nfc_dev, 0); + struct pn533 *dev = nfc_get_drvdata(nfc_dev); + int ret; + + ret = pn533_rf_field(nfc_dev, 0); + if (dev->phy_ops->dev_down && !ret) + dev->phy_ops->dev_down(dev); + + return ret; } static struct nfc_ops pn533_nfc_ops = { diff --git a/drivers/nfc/pn533/pn533.h b/drivers/nfc/pn533/pn533.h index 8bf9d6ece0f5..570ee0a3e832 100644 --- a/drivers/nfc/pn533/pn533.h +++ b/drivers/nfc/pn533/pn533.h @@ -207,6 +207,15 @@ struct pn533_phy_ops { struct sk_buff *out); int (*send_ack)(struct pn533 *dev, gfp_t flags); void (*abort_cmd)(struct pn533 *priv, gfp_t flags); + /* + * dev_up and dev_down are optional. + * They are used to inform the phy layer that the nfc chip + * is going to be really used very soon. The phy layer can then + * bring up it's interface to the chip and have it suspended for power + * saving reasons otherwise. + */ + void (*dev_up)(struct pn533 *priv); + void (*dev_down)(struct pn533 *priv); }; |