NFC: pn544: Separate the core code and the i2c one into different modules

As we may need to support other physical layers, we can avoid linking the
core part into each and every pn544 module.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

5 files changed, 35 insertions, 16 deletions

diff --git a/drivers/nfc/Kconfig b/drivers/nfc/Kconfig
index ec857676c39..80c728b2882 100644
--- a/drivers/nfc/Kconfig
+++ b/drivers/nfc/Kconfig
@@ -5,19 +5,6 @@
 menu "Near Field Communication (NFC) devices"
 	depends on NFC
 
-config PN544_HCI_NFC
-	tristate "HCI PN544 NFC driver"
-	depends on I2C && NFC_HCI && 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
@@ -39,4 +26,6 @@ config NFC_WILINK
 	  Say Y here to compile support for Texas Instrument's NFC WiLink driver
 	  into the kernel or say M to compile it as module.
 
+source "drivers/nfc/pn544/Kconfig"
+
 endmenu
diff --git a/drivers/nfc/Makefile b/drivers/nfc/Makefile
index 36c359043f5..574bbc04d97 100644
--- a/drivers/nfc/Makefile
+++ b/drivers/nfc/Makefile
@@ -2,7 +2,7 @@
 # Makefile for nfc devices
 #
 
-obj-$(CONFIG_PN544_HCI_NFC)	+= pn544/
+obj-$(CONFIG_NFC_PN544)		+= pn544/
 obj-$(CONFIG_NFC_PN533)		+= pn533.o
 obj-$(CONFIG_NFC_WILINK)	+= nfcwilink.o
 
diff --git a/drivers/nfc/pn544/Kconfig b/drivers/nfc/pn544/Kconfig
new file mode 100644
index 00000000000..c277790ac71
--- /dev/null
+++ b/drivers/nfc/pn544/Kconfig
@@ -0,0 +1,23 @@
+config NFC_PN544
+	tristate "NXP PN544 NFC driver"
+	depends on NFC_HCI
+	select CRC_CCITT
+	default n
+	---help---
+	  NXP PN544 core driver.
+	  This is a driver based on the 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.
+	  Say N if unsure.
+
+config NFC_PN544_I2C
+	tristate "NFC PN544 i2c support"
+	depends on NFC_PN544 && I2C && NFC_SHDLC
+	---help---
+	  This module adds support for the NXP pn544 i2c interface.
+	  Select this if your platform is using the i2c bus.
+
+	  If you choose to build a module, it'll be called pn544_i2c.
+	  Say N if unsure.
\ No newline at end of file
diff --git a/drivers/nfc/pn544/Makefile b/drivers/nfc/pn544/Makefile
index 725733881eb..ac076793687 100644
--- a/drivers/nfc/pn544/Makefile
+++ b/drivers/nfc/pn544/Makefile
@@ -2,6 +2,7 @@
 # Makefile for PN544 HCI based NFC driver
 #
 
-obj-$(CONFIG_PN544_HCI_NFC)	+= pn544_i2c.o
+pn544_i2c-objs  = i2c.o
 
-pn544_i2c-y		:= pn544.o i2c.o
+obj-$(CONFIG_NFC_PN544)     += pn544.o
+obj-$(CONFIG_NFC_PN544_I2C) += pn544_i2c.o
diff --git a/drivers/nfc/pn544/pn544.c b/drivers/nfc/pn544/pn544.c
index ece83423985..d108c794008 100644
--- a/drivers/nfc/pn544/pn544.c
+++ b/drivers/nfc/pn544/pn544.c
@@ -20,6 +20,7 @@
 
 #include <linux/delay.h>
 #include <linux/slab.h>
+#include <linux/module.h>
 
 #include <linux/nfc.h>
 #include <net/nfc/hci.h>
@@ -862,6 +863,7 @@ err_alloc_hdev:
 err_info_alloc:
 	return r;
 }
+EXPORT_SYMBOL(pn544_hci_probe);
 
 void pn544_hci_remove(struct nfc_hci_dev *hdev)
 {
@@ -871,3 +873,7 @@ void pn544_hci_remove(struct nfc_hci_dev *hdev)
 	nfc_hci_free_device(hdev);
 	kfree(info);
 }
+EXPORT_SYMBOL(pn544_hci_remove);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION(DRIVER_DESC);