Merge tag 'nfc-next-4.7-1' of git://git.kernel.org/pub/scm/linux/kern…

…el/git/sameo/nfc-next

Samuel Ortiz says:

====================
NFC 4.7 pull request

This is the first NFC pull request for 4.7. With this one we
mainly have:

- Support for NXP's pn532 NFC chipset. The pn532 is based on the same
  microcontroller as the pn533, but it talks to the host through i2c
  instead of USB. By separating the pn533 driver into core and PHY
  parts, we can not add the i2c layer and support the pn532 chipset.

- Support for NCI's loopback mode. This is a testing mode where each
  packet received by the NFCC is sent back to the DH, allowing the
  host to test that the controller can receive and send data.

- A few ACPI related fixes for the STMicro drivers, in order to match
  the device tree naming scheme.

- A bunch of cleanups for the st-nci and the st21nfca STMicro drivers.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

Documentation/devicetree/bindings/net/nfc/pn533-i2c.txt

@@ -0,0 +1,31 @@
+* NXP Semiconductors PN532 NFC Controller
+
+Required properties:
+- compatible: Should be "nxp,pn532-i2c" or "nxp,pn533-i2c".
+- clock-frequency: I²C work frequency.
+- reg: address on the bus
+- interrupt-parent: phandle for the interrupt gpio controller
+- interrupts: GPIO interrupt to which the chip is connected
+
+Optional SoC Specific Properties:
+- pinctrl-names: Contains only one value - "default".
+- pintctrl-0: Specifies the pin control groups used for this controller.
+
+Example (for ARM-based BeagleBone with PN532 on I2C2):
+
+&i2c2 {
+
+	status = "okay";
+
+	pn532: pn532@24 {
+
+		compatible = "nxp,pn532-i2c";
+
+		reg = <0x24>;
+		clock-frequency = <400000>;
+
+		interrupt-parent = <&gpio1>;
+		interrupts = <17 IRQ_TYPE_EDGE_FALLING>;
+
+	};
+};

drivers/nfc/Kconfig

@@ -5,16 +5,6 @@
 menu "Near Field Communication (NFC) devices"
 	depends on NFC
 
-config NFC_PN533
-	tristate "NXP PN533 USB driver"
-	depends on USB
-	help
-	  NXP PN533 USB driver.
-	  This driver provides support for NFC NXP PN533 devices.
-
-	  Say Y here to compile support for PN533 devices into the
-	  kernel or say M to compile it as module (pn533).
-
 config NFC_WILINK
 	tristate "Texas Instruments NFC WiLink driver"
 	depends on TI_ST && NFC_NCI
@@ -70,6 +60,7 @@ config NFC_PORT100
 
 source "drivers/nfc/fdp/Kconfig"
 source "drivers/nfc/pn544/Kconfig"
+source "drivers/nfc/pn533/Kconfig"
 source "drivers/nfc/microread/Kconfig"
 source "drivers/nfc/nfcmrvl/Kconfig"
 source "drivers/nfc/st21nfca/Kconfig"

drivers/nfc/Makefile

@@ -5,7 +5,7 @@
 obj-$(CONFIG_NFC_FDP)		+= fdp/
 obj-$(CONFIG_NFC_PN544)		+= pn544/
 obj-$(CONFIG_NFC_MICROREAD)	+= microread/
-obj-$(CONFIG_NFC_PN533)		+= pn533.o
+obj-$(CONFIG_NFC_PN533)		+= pn533/
 obj-$(CONFIG_NFC_WILINK)	+= nfcwilink.o
 obj-$(CONFIG_NFC_MEI_PHY)	+= mei_phy.o
 obj-$(CONFIG_NFC_SIM)		+= nfcsim.o

drivers/nfc/fdp/fdp.c

@@ -102,7 +102,8 @@ static int fdp_nci_create_conn(struct nci_dev *ndev)
 	if (r)
 		return r;
 
-	return nci_get_conn_info_by_id(ndev, 0);
+	return nci_get_conn_info_by_dest_type_params(ndev,
+						     FDP_PATCH_CONN_DEST, NULL);
 }
 
 static inline int fdp_nci_get_versions(struct nci_dev *ndev)

drivers/nfc/nxp-nci/i2c.c

@@ -418,7 +418,6 @@ MODULE_DEVICE_TABLE(acpi, acpi_id);
 static struct i2c_driver nxp_nci_i2c_driver = {
 	.driver = {
 		   .name = NXP_NCI_I2C_DRIVER_NAME,
-		   .owner  = THIS_MODULE,
 		   .acpi_match_table = ACPI_PTR(acpi_id),
 		   .of_match_table = of_match_ptr(of_nxp_nci_i2c_match),
 		  },

drivers/nfc/pn533/Kconfig

@@ -0,0 +1,27 @@
+config NFC_PN533
+	tristate
+	help
+	  NXP PN533 core driver.
+	  This driver provides core functionality for NXP PN533 NFC devices.
+
+config NFC_PN533_USB
+	tristate "NFC PN533 device support (USB)"
+	depends on USB
+	select NFC_PN533
+	---help---
+	  This module adds support for the NXP pn533 USB interface.
+	  Select this if your platform is using the USB bus.
+
+	  If you choose to build a module, it'll be called pn533_usb.
+	  Say N if unsure.
+
+config NFC_PN533_I2C
+	tristate "NFC PN533 device support (I2C)"
+	depends on I2C
+	select NFC_PN533
+	---help---
+	  This module adds support for the NXP pn533 I2C interface.
+	  Select this if your platform is using the I2C bus.
+
+	  If you choose to build a module, it'll be called pn533_i2c.
+	  Say N if unsure.

drivers/nfc/pn533/Makefile

@@ -0,0 +1,9 @@
+#
+# Makefile for PN533 NFC driver
+#
+pn533_usb-objs  = usb.o
+pn533_i2c-objs  = i2c.o
+
+obj-$(CONFIG_NFC_PN533)     += pn533.o
+obj-$(CONFIG_NFC_PN533_USB) += pn533_usb.o
+obj-$(CONFIG_NFC_PN533_I2C) += pn533_i2c.o