NFC: HCI based pn544 driver

This is an NFC driver for NXP pn544.
Unlike pn544.c, this one is based on the NFC HCI and SHDLC kernel layers.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/nfc/Kconfig

@@ -17,6 +17,19 @@ config PN544_NFC
 	  To compile this driver as a module, choose m here. The module will
 	  be called pn544.
 
+config PN544_HCI_NFC
+	tristate "HCI PN544 NFC driver"
+	depends on I2C && NFC_SHDLC
+	select CRC_CCITT
+	default n
+	---help---
+	  NXP PN544 i2c driver.
+	  This is a driver based on the SHDLC and HCI NFC kernel layers and
+	  will thus not work with NXP libnfc library.
+
+	  To compile this driver as a module, choose m here. The module will
+	  be called pn544_hci.
+
 config NFC_PN533
 	tristate "NXP PN533 USB driver"
 	depends on USB

drivers/nfc/Makefile

@@ -3,6 +3,7 @@
 #
 
 obj-$(CONFIG_PN544_NFC)		+= pn544.o
+obj-$(CONFIG_PN544_HCI_NFC)	+= pn544_hci.o
 obj-$(CONFIG_NFC_PN533)		+= pn533.o
 obj-$(CONFIG_NFC_WILINK)	+= nfcwilink.o
 

include/linux/nfc/pn544.h

@@ -84,6 +84,12 @@ struct pn544_fw_packet {
 };
 
 #ifdef __KERNEL__
+enum {
+	NFC_GPIO_ENABLE,
+	NFC_GPIO_FW_RESET,
+	NFC_GPIO_IRQ
+};
+
 /* board config */
 struct pn544_nfc_platform_data {
 	int (*request_resources) (struct i2c_client *client);
@@ -91,6 +97,7 @@ struct pn544_nfc_platform_data {
 	void (*enable) (int fw);
 	int (*test) (void);
 	void (*disable) (void);
+	int (*get_gpio)(int type);
 };
 #endif /* __KERNEL__ */