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Commit 562d4d59 authored by Thierry Escande's avatar Thierry Escande Committed by Samuel Ortiz
Browse files

NFC: Sony Port-100 Series driver 



This adds support for the Sony NFC USB dongle RC-S380, based on the
Port-100 chip. This dongle is an analog frontend and does not implement
the digital layer. This driver uses the nfc_digital module which is an
implementation of the NFC Digital Protocol stack.

This patch is a skeleton. It only registers the dongle against the NFC
digital protocol stack. All NFC digital operation functions are stubbed
out.

Signed-off-by: default avatarThierry Escande <thierry.escande@linux.intel.com>
Cc: Stephen Tiedemann <stephen.tiedemann@gmail.com>
Tested-by: default avatarCho, Yu-Chen <acho@suse.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent 93ad4202

drivers/nfc/Kconfig

+10 −0
Original line number Original line Diff line number Diff line
@@ -46,6 +46,16 @@ config NFC_SIM 




	  If unsure, say N.

	  If unsure, say N.





config NFC_PORT100

	tristate "Sony NFC Port-100 Series USB device support"

	depends on USB

	depends on NFC_DIGITAL

	help

	  This adds support for Sony Port-100 chip based USB devices such as the

	  RC-S380 dongle.



	  If unsure, say N.



source "drivers/nfc/pn544/Kconfig"

source "drivers/nfc/pn544/Kconfig"

source "drivers/nfc/microread/Kconfig"

source "drivers/nfc/microread/Kconfig"

drivers/nfc/Makefile

+1 −0
Original line number Original line Diff line number Diff line
@@ -8,5 +8,6 @@ obj-$(CONFIG_NFC_PN533) += pn533.o 
obj-$(CONFIG_NFC_WILINK)	+= nfcwilink.o

obj-$(CONFIG_NFC_WILINK)	+= nfcwilink.o

obj-$(CONFIG_NFC_MEI_PHY)	+= mei_phy.o

obj-$(CONFIG_NFC_MEI_PHY)	+= mei_phy.o

obj-$(CONFIG_NFC_SIM)		+= nfcsim.o

obj-$(CONFIG_NFC_SIM)		+= nfcsim.o

obj-$(CONFIG_NFC_PORT100)	+= port100.o





ccflags-$(CONFIG_NFC_DEBUG) := -DDEBUG
 
ccflags-$(CONFIG_NFC_DEBUG) := -DDEBUG

drivers/nfc/port100.c

0 → 100644
+187 −0
Original line number Original line Diff line number Diff line 
/*

 * Sony NFC Port-100 Series driver

 * Copyright (c) 2013, Intel Corporation.

 *

 * Partly based/Inspired by Stephen Tiedemann's nfcpy

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms and conditions of the GNU General Public License,

 * version 2, as published by the Free Software Foundation.

 *

 * This program is distributed in the hope it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for

 * more details.

 *

 */



#include <linux/module.h>

#include <linux/usb.h>

#include <net/nfc/digital.h>



#define VERSION "0.1"



#define SONY_VENDOR_ID    0x054c

#define RCS380_PRODUCT_ID 0x06c1



#define PORT100_PROTOCOLS (NFC_PROTO_JEWEL_MASK    | \

			   NFC_PROTO_MIFARE_MASK   | \

			   NFC_PROTO_FELICA_MASK   | \

			   NFC_PROTO_NFC_DEP_MASK)



#define PORT100_CAPABILITIES (NFC_DIGITAL_DRV_CAPS_IN_CRC | \

			      NFC_DIGITAL_DRV_CAPS_TG_CRC)



struct port100 {

	struct nfc_digital_dev *nfc_digital_dev;



	int skb_headroom;

	int skb_tailroom;



	struct usb_device *udev;

	struct usb_interface *interface;

};



static void port100_abort_cmd(struct nfc_digital_dev *ddev)

{

}



static int port100_switch_rf(struct nfc_digital_dev *ddev, bool on)

{

	return -EOPNOTSUPP;

}



static int port100_in_configure_hw(struct nfc_digital_dev *ddev, int type,

				   int param)

{

	return -EOPNOTSUPP;

}



static int port100_in_send_cmd(struct nfc_digital_dev *ddev,

			       struct sk_buff *skb, u16 _timeout,

			       nfc_digital_cmd_complete_t cb, void *arg)

{

	return -EOPNOTSUPP;

}



static int port100_tg_configure_hw(struct nfc_digital_dev *ddev, int type,

				   int param)

{

	return -EOPNOTSUPP;

}



static int port100_tg_send_cmd(struct nfc_digital_dev *ddev,

			       struct sk_buff *skb, u16 timeout,

			       nfc_digital_cmd_complete_t cb, void *arg)

{

	return -EOPNOTSUPP;

}



static int port100_listen_mdaa(struct nfc_digital_dev *ddev,

			       struct digital_tg_mdaa_params *params,

			       u16 timeout,

			       nfc_digital_cmd_complete_t cb, void *arg)

{

	return -EOPNOTSUPP;

}



static int port100_listen(struct nfc_digital_dev *ddev, u16 timeout,

			  nfc_digital_cmd_complete_t cb, void *arg)

{

	return -EOPNOTSUPP;

}



static struct nfc_digital_ops port100_digital_ops = {

	.in_configure_hw = port100_in_configure_hw,

	.in_send_cmd = port100_in_send_cmd,



	.tg_listen_mdaa = port100_listen_mdaa,

	.tg_listen = port100_listen,

	.tg_configure_hw = port100_tg_configure_hw,

	.tg_send_cmd = port100_tg_send_cmd,



	.switch_rf = port100_switch_rf,

	.abort_cmd = port100_abort_cmd,

};



static const struct usb_device_id port100_table[] = {

	{ .match_flags		= USB_DEVICE_ID_MATCH_DEVICE,

	  .idVendor		= SONY_VENDOR_ID,

	  .idProduct		= RCS380_PRODUCT_ID,

	},

	{ }

};

MODULE_DEVICE_TABLE(usb, port100_table);



static int port100_probe(struct usb_interface *interface,

			 const struct usb_device_id *id)

{

	struct port100 *dev;

	int rc;



	dev = devm_kzalloc(&interface->dev, sizeof(struct port100), GFP_KERNEL);

	if (!dev)

		return -ENOMEM;



	dev->udev = usb_get_dev(interface_to_usbdev(interface));

	dev->interface = interface;

	usb_set_intfdata(interface, dev);



	nfc_info(&interface->dev, "Sony NFC Port-100 Series attached\n");



	dev->nfc_digital_dev = nfc_digital_allocate_device(&port100_digital_ops,

							   PORT100_PROTOCOLS,

							   PORT100_CAPABILITIES,

							   dev->skb_headroom,

							   dev->skb_tailroom);

	if (!dev->nfc_digital_dev) {

		nfc_err(&interface->dev,

			"Could not allocate nfc_digital_dev.\n");

		rc = -ENOMEM;

		goto error;

	}



	nfc_digital_set_parent_dev(dev->nfc_digital_dev, &interface->dev);

	nfc_digital_set_drvdata(dev->nfc_digital_dev, dev);



	rc = nfc_digital_register_device(dev->nfc_digital_dev);

	if (rc) {

		nfc_err(&interface->dev,

			"Could not register digital device.\n");

		goto free_nfc_dev;

	}



	return 0;



free_nfc_dev:

	nfc_digital_free_device(dev->nfc_digital_dev);



error:

	return rc;

}



static void port100_disconnect(struct usb_interface *interface)

{

	struct port100 *dev;



	dev = usb_get_intfdata(interface);

	usb_set_intfdata(interface, NULL);



	nfc_digital_unregister_device(dev->nfc_digital_dev);

	nfc_digital_free_device(dev->nfc_digital_dev);



	nfc_info(&interface->dev, "Sony Port-100 NFC device disconnected");

}



static struct usb_driver port100_driver = {

	.name =		"port100",

	.probe =	port100_probe,

	.disconnect =	port100_disconnect,

	.id_table =	port100_table,

};



module_usb_driver(port100_driver);



MODULE_DESCRIPTION("NFC Port-100 series usb driver ver " VERSION);

MODULE_VERSION(VERSION);

MODULE_LICENSE("GPL");