Commit ec876526 authored by John W. Linville's avatar John W. Linville
Browse files

Merge tag 'nfc-next-3.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/nfc-next 



Samuel Ortiz <sameo@linux.intel.com> says:

"NFC: 3.17 pull request

This is the NFC pull request for 3.17.
This is a rather quiet one, we have:

- A new driver from ST Microelectronics for their NCI ST21NFCB,
  including device tree  support.

- p2p support for the ST21NFCA driver

- A few fixes an enhancements for the NFC digital layer"

Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parents 9a244409 bf30a67c

Documentation/devicetree/bindings/net/nfc/st21nfcb.txt

0 → 100644
+33 −0
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* STMicroelectronics SAS. ST21NFCB NFC Controller



Required properties:

- compatible: Should be "st,st21nfcb_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

- reset-gpios: Output GPIO pin used to reset the ST21NFCB



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 BeagleBoard xM with ST21NFCB on I2C2):



&i2c2 {



	status = "okay";



	st21nfcb: st21nfcb@8 {



		compatible = "st,st21nfcb_i2c";



		reg = <0x08>;

		clock-frequency = <400000>;



		interrupt-parent = <&gpio5>;

		interrupts = <2 IRQ_TYPE_LEVEL_LOW>;



		reset-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>;

	};

};

drivers/nfc/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -72,5 +72,5 @@ source "drivers/nfc/pn544/Kconfig" 
source "drivers/nfc/microread/Kconfig"

source "drivers/nfc/nfcmrvl/Kconfig"

source "drivers/nfc/st21nfca/Kconfig"



source "drivers/nfc/st21nfcb/Kconfig"

endmenu

drivers/nfc/Makefile

+2 −1
Original line number Diff line number Diff line
@@ -12,5 +12,6 @@ obj-$(CONFIG_NFC_PORT100) += port100.o 
obj-$(CONFIG_NFC_MRVL)		+= nfcmrvl/

obj-$(CONFIG_NFC_TRF7970A)	+= trf7970a.o

obj-$(CONFIG_NFC_ST21NFCA)  	+= st21nfca/

obj-$(CONFIG_NFC_ST21NFCB)	+= st21nfcb/



ccflags-$(CONFIG_NFC_DEBUG) := -DDEBUG

drivers/nfc/st21nfca/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -4,5 +4,5 @@ 


st21nfca_i2c-objs  = i2c.o



obj-$(CONFIG_NFC_ST21NFCA)     += st21nfca.o

obj-$(CONFIG_NFC_ST21NFCA)     += st21nfca.o st21nfca_dep.o

obj-$(CONFIG_NFC_ST21NFCA_I2C) += st21nfca_i2c.o

drivers/nfc/st21nfca/i2c.c

+5 −4
Original line number Diff line number Diff line
@@ -93,7 +93,7 @@ struct st21nfca_i2c_phy { 
	int hard_fault;

	struct mutex phy_lock;

};

static u8 len_seq[] = { 13, 24, 15, 29 };

static u8 len_seq[] = { 16, 24, 12, 29 };

static u16 wait_tab[] = { 2, 3, 5, 15, 20, 40};



#define I2C_DUMP_SKB(info, skb)					\
@@ -397,12 +397,11 @@ static int st21nfca_hci_i2c_read(struct st21nfca_i2c_phy *phy, 
		 * The first read sequence does not start with SOF.

		 * Data is corrupeted so we drop it.

		 */

		if (!phy->current_read_len && buf[0] != ST21NFCA_SOF_EOF) {

		if (!phy->current_read_len && !IS_START_OF_FRAME(buf)) {

			skb_trim(skb, 0);

			phy->current_read_len = 0;

			return -EIO;

		} else if (phy->current_read_len &&

			IS_START_OF_FRAME(buf)) {

		} else if (phy->current_read_len && IS_START_OF_FRAME(buf)) {

			/*

			 * Previous frame transmission was interrupted and

			 * the frame got repeated.
@@ -487,6 +486,8 @@ static irqreturn_t st21nfca_hci_irq_thread_fn(int irq, void *phy_id) 
		 */

		nfc_hci_recv_frame(phy->hdev, phy->pending_skb);

		phy->crc_trials = 0;

	} else {

		kfree_skb(phy->pending_skb);

	}



	phy->pending_skb = alloc_skb(ST21NFCA_HCI_LLC_MAX_SIZE * 2, GFP_KERNEL);

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