linux-kernel - [PATCH v2 1/3] NFC: nci: Add firmware download support

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Message-Id: <1425895925-20593-2-git-send-email-clement.perrochaud@effinnov.com>
Date:	Mon,  9 Mar 2015 11:12:03 +0100
From:	clement.perrochaud@...innov.com
To:	linux-nfc@...ts.01.org
Cc:	Clément Perrochaud <clement.perrochaud@....com>,
	sunil.jogi@....com, jerome.pele@....com,
	Charles.Gorand-Effinnov@....com, lauro.venancio@...nbossa.org,
	aloisio.almeida@...nbossa.org, sameo@...ux.intel.com,
	robh+dt@...nel.org, pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	davem@...emloft.net, grant.likely@...aro.org, lefrique@...vell.com,
	christophe.ricard@...il.com, cuissard@...vell.com,
	bzhao@...vell.com, hirent@...vell.com, akarwar@...vell.com,
	linux-wireless@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	anda-maria.nicolae@...el.com,
	Clément Perrochaud 
	<clement.perrochaud@...innov.com>
Subject: [PATCH v2 1/3] NFC: nci: Add firmware download support

From: Clément Perrochaud <clement.perrochaud@....com>

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@...innov.com>
---
 include/net/nfc/nci_core.h |  1 +
 net/nfc/nci/core.c         | 11 +++++++++++
 2 files changed, 12 insertions(+)

diff --git a/include/net/nfc/nci_core.h b/include/net/nfc/nci_core.h
index ff87f86..34a6e09 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 9575a18..49ff321 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 ---- */
-- 
Clément Perrochaud

Eff'Innov Technologies
Caen, Aix-En-Provence, Grenoble

Eff'Innov Technologies
Campus EffiScience
2, Esplanade Anton Philips
14460 Colombelles, FRANCE

http://www.effinnov.com

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