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Commit 7e2afc9d authored by Arron Wang's avatar Arron Wang Committed by Samuel Ortiz
Browse files

NFC: Set local gb and DEP registries 



Set the local general bytes and default value for NFCIP1
Target/Initiator registries if the protocol is NFC-DEP

Signed-off-by: default avatarArron Wang <arron.wang@intel.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent 9b34f40c

drivers/nfc/pn544_hci.c

+62 −0
Original line number Diff line number Diff line
@@ -100,6 +100,10 @@ enum pn544_state { 
#define PN544_SYS_MGMT_INFO_NOTIFICATION	0x02



#define PN544_POLLING_LOOP_MGMT_GATE		0x94

#define PN544_DEP_MODE				0x01

#define PN544_DEP_ATR_REQ			0x02

#define PN544_DEP_ATR_RES			0x03

#define PN544_DEP_MERGE				0x0D

#define PN544_PL_RDPHASES			0x06

#define PN544_PL_EMULATION			0x07

#define PN544_PL_NFCT_DEACTIVATED		0x09
@@ -630,6 +634,9 @@ static int pn544_hci_start_poll(struct nfc_hci_dev *hdev, 
	int r;

	u8 duration[2];

	u8 activated;

	u8 i_mode = 0x3f; /* Enable all supported modes */

	u8 t_mode = 0x0f;

	u8 t_merge = 0x01; /* Enable merge by default */



	pr_info(DRIVER_DESC ": %s protocols 0x%x 0x%x\n",

		__func__, im_protocols, tm_protocols);
@@ -667,6 +674,61 @@ static int pn544_hci_start_poll(struct nfc_hci_dev *hdev, 
	if (r < 0)

		return r;



	if ((im_protocols | tm_protocols) & NFC_PROTO_NFC_DEP_MASK) {

		hdev->gb = nfc_get_local_general_bytes(hdev->ndev,

							&hdev->gb_len);

		pr_debug("generate local bytes %p", hdev->gb);

		if (hdev->gb == NULL || hdev->gb_len == 0) {

			im_protocols &= ~NFC_PROTO_NFC_DEP_MASK;

			tm_protocols &= ~NFC_PROTO_NFC_DEP_MASK;

		}

	}



	if (im_protocols & NFC_PROTO_NFC_DEP_MASK) {

		r = nfc_hci_send_event(hdev,

				PN544_RF_READER_NFCIP1_INITIATOR_GATE,

				NFC_HCI_EVT_END_OPERATION, NULL, 0);

		if (r < 0)

			return r;



		r = nfc_hci_set_param(hdev,

				PN544_RF_READER_NFCIP1_INITIATOR_GATE,

				PN544_DEP_MODE, &i_mode, 1);

		if (r < 0)

			return r;



		r = nfc_hci_set_param(hdev,

				PN544_RF_READER_NFCIP1_INITIATOR_GATE,

				PN544_DEP_ATR_REQ, hdev->gb, hdev->gb_len);

		if (r < 0)

			return r;



		r = nfc_hci_send_event(hdev,

				PN544_RF_READER_NFCIP1_INITIATOR_GATE,

				NFC_HCI_EVT_READER_REQUESTED, NULL, 0);

		if (r < 0)

			nfc_hci_send_event(hdev,

					PN544_RF_READER_NFCIP1_INITIATOR_GATE,

					NFC_HCI_EVT_END_OPERATION, NULL, 0);

	}



	if (tm_protocols & NFC_PROTO_NFC_DEP_MASK) {

		r = nfc_hci_set_param(hdev, PN544_RF_READER_NFCIP1_TARGET_GATE,

				PN544_DEP_MODE, &t_mode, 1);

		if (r < 0)

			return r;



		r = nfc_hci_set_param(hdev, PN544_RF_READER_NFCIP1_TARGET_GATE,

				PN544_DEP_ATR_RES, hdev->gb, hdev->gb_len);

		if (r < 0)

			return r;



		r = nfc_hci_set_param(hdev, PN544_RF_READER_NFCIP1_TARGET_GATE,

				PN544_DEP_MERGE, &t_merge, 1);

		if (r < 0)

			return r;

	}



	r = nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,

			       NFC_HCI_EVT_READER_REQUESTED, NULL, 0);

	if (r < 0)

include/net/nfc/hci.h

+3 −0
Original line number Diff line number Diff line
@@ -114,6 +114,9 @@ struct nfc_hci_dev { 
	int async_cb_type;

	data_exchange_cb_t async_cb;

	void *async_cb_context;



	u8 *gb;

	size_t gb_len;

};



/* hci device allocation */