NFC: nci: Add firmware download support

A simple forward for firmware download (i.e. sending a new firmware
to the NFC adapter) from the NFC subsystem to the drivers.

This feature is required to update the firmware of NXP-NCI NFC
controllers but can be used by any NCI driver.

This feature has been present in the HCI subsystem since 9a695d.

Signed-off-by: Clément Perrochaud <clement.perrochaud@effinnov.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

2 files changed, 12 insertions, 0 deletions

diff --git a/include/net/nfc/nci_core.h b/include/net/nfc/nci_core.h
index ff87f8611fa3..34a6e09b3f7f 100644
--- a/include/net/nfc/nci_core.h
+++ b/include/net/nfc/nci_core.h
@@ -71,6 +71,7 @@ struct nci_ops {
         int   (*close)(struct nci_dev *ndev);
         int   (*send)(struct nci_dev *ndev, struct sk_buff *skb);
         int   (*setup)(struct nci_dev *ndev);
+        int   (*fw_download)(struct nci_dev *ndev, const char *firmware_name);
         __u32 (*get_rfprotocol)(struct nci_dev *ndev, __u8 rf_protocol);
         int   (*discover_se)(struct nci_dev *ndev);
         int   (*disable_se)(struct nci_dev *ndev, u32 se_idx);
diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c
index 9575a1892607..49ff32106080 100644
--- a/net/nfc/nci/core.c
+++ b/net/nfc/nci/core.c
@@ -907,6 +907,16 @@ static int nci_se_io(struct nfc_dev *nfc_dev, u32 se_idx,
         return 0;
 }
 
+static int nci_fw_download(struct nfc_dev *nfc_dev, const char *firmware_name)
+{
+        struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
+
+        if (!ndev->ops->fw_download)
+                return -ENOTSUPP;
+
+        return ndev->ops->fw_download(ndev, firmware_name);
+}
+
 static struct nfc_ops nci_nfc_ops = {
         .dev_up = nci_dev_up,
         .dev_down = nci_dev_down,
@@ -922,6 +932,7 @@ static struct nfc_ops nci_nfc_ops = {
         .disable_se = nci_disable_se,
         .discover_se = nci_discover_se,
         .se_io = nci_se_io,
+        .fw_download = nci_fw_download,
 };
 
 /* ---- Interface to NCI drivers ---- */