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Message-Id: <1424772112-27399-9-git-send-email-robert.dolca@intel.com> Date: Tue, 24 Feb 2015 12:01:52 +0200 From: Robert Dolca <robert.dolca@...el.com> To: linux-nfc@...ts.01.org, Lauro Ramos Venancio <lauro.venancio@...nbossa.org>, Aloisio Almeida Jr <aloisio.almeida@...nbossa.org>, Samuel Ortiz <sameo@...ux.intel.com> Cc: linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org, netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>, Robert Dolca <robert.dolca@...el.com> Subject: [PATCH 8/8] NFC: Add Intel FieldsPeak NFC solution driver The device can be enumerated using ACPI using the id INT339A. The 1st GPIO is the IRQ and the 2nd is the RESET pin. I can be also enumerated using platform init. Signed-off-by: Robert Dolca <robert.dolca@...el.com> --- drivers/nfc/Kconfig | 1 + drivers/nfc/fdp/Kconfig | 22 ++ drivers/nfc/fdp/Makefile | 10 + drivers/nfc/fdp/cmd.c | 196 +++++++++++++++ drivers/nfc/fdp/core.c | 503 ++++++++++++++++++++++++++++++++++++++ drivers/nfc/fdp/fdp.h | 115 +++++++++ drivers/nfc/fdp/i2c.c | 454 ++++++++++++++++++++++++++++++++++ drivers/nfc/fdp/ntf.c | 68 ++++++ drivers/nfc/fdp/rsp.c | 117 +++++++++ include/linux/platform_data/fdp.h | 33 +++ 10 files changed, 1519 insertions(+) create mode 100644 drivers/nfc/fdp/Kconfig create mode 100644 drivers/nfc/fdp/Makefile create mode 100644 drivers/nfc/fdp/cmd.c create mode 100644 drivers/nfc/fdp/core.c create mode 100644 drivers/nfc/fdp/fdp.h create mode 100644 drivers/nfc/fdp/i2c.c create mode 100644 drivers/nfc/fdp/ntf.c create mode 100644 drivers/nfc/fdp/rsp.c create mode 100644 include/linux/platform_data/fdp.h diff --git a/drivers/nfc/Kconfig b/drivers/nfc/Kconfig index 6ee2e8d..302fe59 100644 --- a/drivers/nfc/Kconfig +++ b/drivers/nfc/Kconfig @@ -68,6 +68,7 @@ config NFC_PORT100 If unsure, say N. +source "drivers/nfc/fdp/Kconfig" source "drivers/nfc/pn544/Kconfig" source "drivers/nfc/microread/Kconfig" source "drivers/nfc/nfcmrvl/Kconfig" diff --git a/drivers/nfc/fdp/Kconfig b/drivers/nfc/fdp/Kconfig new file mode 100644 index 0000000..130a235 --- /dev/null +++ b/drivers/nfc/fdp/Kconfig @@ -0,0 +1,22 @@ +config NFC_FDP + tristate "Intel FDP NFC driver" + depends on NFC_NCI + select CRC_CCITT + default n + ---help--- + Intel FDP core driver. + This is a driver based on the NCI NFC kernel layers. + + To compile this driver as a module, choose m here. The module will + be called pn547. + Say N if unsure. + +config NFC_FDP_I2C + tristate "NFC FDP i2c support" + depends on NFC_FDP && I2C + ---help--- + This module adds support for the Intel FDP i2c interface. + Select this if your platform is using the i2c bus. + + If you choose to build a module, it'll be called fdp_i2c. + Say N if unsure. diff --git a/drivers/nfc/fdp/Makefile b/drivers/nfc/fdp/Makefile new file mode 100644 index 0000000..caad636 --- /dev/null +++ b/drivers/nfc/fdp/Makefile @@ -0,0 +1,10 @@ +# +# Makefile for FDP NCI based NFC driver +# + +obj-$(CONFIG_NFC_FDP) += fdp.o +obj-$(CONFIG_NFC_FDP_I2C) += fdp_i2c.o + +fdp-objs = core.o cmd.o ntf.o rsp.o +fdp_i2c-objs = i2c.o + diff --git a/drivers/nfc/fdp/cmd.c b/drivers/nfc/fdp/cmd.c new file mode 100644 index 0000000..1b78602 --- /dev/null +++ b/drivers/nfc/fdp/cmd.c @@ -0,0 +1,196 @@ +/* ------------------------------------------------------------------------- + * Copyright (C) 2014-2016, Intel Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * ------------------------------------------------------------------------- */ + +#include <linux/module.h> +#include <linux/nfc.h> +#include <linux/i2c.h> +#include <linux/firmware.h> +#include <net/nfc/nci_core.h> + +#include "fdp.h" + +#define NCI_OP_PROP_PATCH_CMD nci_opcode_pack(NCI_GID_PROP, 0x08) +#define NCI_OP_PROP_SET_PRODUCTION_DATA_CMD nci_opcode_pack(NCI_GID_PROP, 0x23) +#define NCI_OP_CORE_GET_CONFIG_CMD nci_opcode_pack(NCI_GID_CORE, 0x03) +static u8 nci_core_get_config_otp_ram_version[5] = { + 0x04, + NCI_PARAM_ID_FW_RAM_VERSION, + NCI_PARAM_ID_FW_OTP_VERSION, + NCI_PARAM_ID_OTP_LIMITED_VERSION, + NCI_PARAM_ID_KEY_INDEX_ID +}; + +#define NCI_GET_VERSION_TIMEOUT 8000 +#define NCI_PATCH_REQUEST_TIMEOUT 8000 + +struct production_data { + u8 len; + char *data; +}; + +static void fdp_nci_get_version_req(struct nci_dev *ndev, unsigned long opt) +{ + fdp_nci_send_cmd(ndev, NCI_OP_CORE_GET_CONFIG_CMD, + sizeof(nci_core_get_config_otp_ram_version), + &nci_core_get_config_otp_ram_version); +} + +static void fdp_nci_set_production_data_req(struct nci_dev *ndev, + unsigned long opt) +{ + struct production_data *pd = (struct production_data *)opt; + + fdp_nci_send_cmd(ndev, NCI_OP_PROP_SET_PRODUCTION_DATA_CMD, + pd->len, pd->data); +} + +static void fdp_nci_patch_req(struct nci_dev *ndev, unsigned long opt) +{ + u8 type = (u8) opt; + + fdp_nci_send_cmd(ndev, NCI_OP_PROP_PATCH_CMD, sizeof(type), &type); +} + +int fdp_nci_create_conn(struct nci_dev *ndev) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + struct core_conn_create_dest_spec_params param; + + param.type = 0xA0; + param.length = 0x00; + + return nci_core_conn_create(info->ndev, 0xC2, 1, sizeof(param), ¶m, + &info->conn_id); +} + +int fdp_nci_close_conn(struct nci_dev *ndev) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + + return nci_core_conn_close(info->ndev, info->conn_id); +} + +int fdp_nci_get_versions(struct nci_dev *ndev) +{ + return nci_request_driver(ndev, fdp_nci_get_version_req, 0, + msecs_to_jiffies(NCI_GET_VERSION_TIMEOUT)); +} + +int fdp_nci_patch_start(struct nci_dev *ndev, u8 type) +{ + return nci_request_driver(ndev, fdp_nci_patch_req, (unsigned long) type, + msecs_to_jiffies(NCI_PATCH_REQUEST_TIMEOUT)); +} + +int fdp_nci_patch_end(struct nci_dev *ndev) +{ + return nci_request_driver(ndev, fdp_nci_patch_req, NCI_PATCH_TYPE_EOT, + msecs_to_jiffies(NCI_PATCH_REQUEST_TIMEOUT)); +} + +int fdp_nci_set_production_data(struct nci_dev *ndev, u8 len, char *data) +{ + struct production_data pd; + + pd.len = len; + pd.data = data; + + return nci_request_driver(ndev, fdp_nci_set_production_data_req, + (unsigned long) &pd, + msecs_to_jiffies(NCI_PATCH_REQUEST_TIMEOUT)); +} + +int fdp_nci_set_clock(struct nci_dev *ndev, u8 clock_type, u32 clock_freq) +{ + u32 fc = 13560; + u32 nd, num, delta; + char data[9]; + + nd = (24 * fc) / clock_freq; + delta = 24 * fc - nd * clock_freq; + num = (32768 * delta) / clock_freq; + + data[0] = 0x00; + data[1] = 0x00; + data[2] = 0x00; + + data[3] = 0x10; + data[4] = 0x04; + data[5] = num & 0xFF; + data[6] = (num >> 8) & 0xff; + data[7] = nd; + data[8] = clock_type; + + return fdp_nci_set_production_data(ndev, 9, data); +} + +static void fdp_nci_send_patch_cb(struct nci_dev *ndev) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + + info->setup_patch_sent = 1; + wake_up(&info->setup_wq); +} + +int fdp_nci_send_patch(struct nci_dev *ndev, u8 type) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + const struct firmware *fw; + struct sk_buff *skb; + unsigned long len; + u8 max_size, payload_size; + int rc = 0; + + if ((type == NCI_PATCH_TYPE_OTP && !info->otp_patch) || + (type == NCI_PATCH_TYPE_RAM && !info->ram_patch)) + return -EINVAL; + + if (type == NCI_PATCH_TYPE_OTP) + fw = info->otp_patch; + else + fw = info->ram_patch; + + max_size = nci_conn_max_data_pkt_payload_size(ndev, info->conn_id); + if (!max_size) + return -EINVAL; + + len = fw->size; + + fdp_nci_set_data_pkt_counter(ndev, fdp_nci_send_patch_cb, + DIV_ROUND_UP(fw->size, max_size)); + + while (len) { + + payload_size = min_t(unsigned long, (unsigned long) max_size, + len); + + skb = nci_skb_alloc(ndev, (NCI_CTRL_HDR_SIZE + payload_size), + GFP_KERNEL); + skb_reserve(skb, NCI_CTRL_HDR_SIZE); + + memcpy(skb_put(skb, payload_size), fw->data + (fw->size - len), + payload_size); + + rc = nci_send_data(ndev, info->conn_id, skb); + + if (rc) { + fdp_nci_set_data_pkt_counter(ndev, NULL, 0); + return rc; + } + + len -= payload_size; + } + + return rc; +} diff --git a/drivers/nfc/fdp/core.c b/drivers/nfc/fdp/core.c new file mode 100644 index 0000000..ca0a7cb --- /dev/null +++ b/drivers/nfc/fdp/core.c @@ -0,0 +1,503 @@ +/* ------------------------------------------------------------------------- + * Copyright (C) 2014-2016, Intel Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * ------------------------------------------------------------------------- */ + +#include <linux/module.h> +#include <linux/nfc.h> +#include <linux/i2c.h> +#include <linux/delay.h> +#include <net/nfc/nci_core.h> + +#include "fdp.h" + +#define FDP_OTP_PATCH_NAME "otp.bin" +#define FDP_RAM_PATCH_NAME "ram.bin" +#define FDP_FW_HEADER_SIZE 576 + +int fdp_nci_open(struct nci_dev *ndev) +{ + int r; + struct fdp_nci_info *info; + + info = nci_get_drvdata(ndev); + pr_debug("%s\n", __func__); + + mutex_lock(&info->lock); + + skb_queue_purge(&info->rx_q); + r = info->phy_ops->enable(info->phy); + if (r == 0) + info->state = FDP_ST_RESET; + + mutex_unlock(&info->lock); + return r; +} + +int fdp_nci_close(struct nci_dev *ndev) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + + pr_debug("%s\n", __func__); + skb_queue_purge(&info->rx_q); + + return 0; +} + +int fdp_nci_send(struct nci_dev *ndev, struct sk_buff *skb) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + + pr_debug("%s\n", __func__); + + if (atomic_dec_and_test(&info->data_pkt_counter)) + info->data_pkt_counter_cb(ndev); + + return info->phy_ops->write(info->phy, skb); +} + +void fdp_nci_intercept_inc(struct nci_dev *ndev) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + + pr_info("FDP NCI intercept INC\n"); + atomic_inc(&info->intercept); +} + +void fdp_nci_intercept_dec(struct nci_dev *ndev) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + + pr_info("FDP NCI intercept DEC\n"); + atomic_dec(&info->intercept); +} + +void fdp_nci_intercept_add(struct nci_dev *ndev, int count) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + + pr_info("FDP NCI intercept ADD %d\n", count); + atomic_add(count, &info->intercept); +} + +void fdp_nci_intercept_disable(struct nci_dev *ndev) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + + pr_info("FDP NCI intercept disabled\n"); + atomic_set(&info->intercept, 0); +} + +void fdp_nci_set_data_pkt_counter(struct nci_dev *ndev, + void (*cb)(struct nci_dev *ndev), int count) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + + pr_info("FDP NCI data pkt counter %d\n", count); + atomic_set(&info->data_pkt_counter, count); + info->data_pkt_counter_cb = cb; +} + +int fdp_nci_recv_frame(struct nci_dev *ndev, struct sk_buff *skb) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + + pr_debug("%s\n", __func__); + + if (atomic_read(&info->intercept)) { + skb_queue_tail(&info->rx_q, skb); + schedule_work(&info->rx_work); + return 0; + } + + return nci_recv_frame(ndev, skb); +} +EXPORT_SYMBOL(fdp_nci_recv_frame); + +void fdp_nci_rx_work(struct work_struct *work) +{ + struct sk_buff *skb; + struct fdp_nci_info *info = container_of(work, struct fdp_nci_info, + rx_work); + struct nci_dev *ndev = info->ndev; + int r; + + while ((skb = skb_dequeue(&info->rx_q))) { + + switch (nci_mt(skb->data)) { + case NCI_MT_RSP_PKT: + r = fdp_nci_rsp_packet(ndev, skb); + break; + case NCI_MT_NTF_PKT: + r = fdp_nci_ntf_packet(ndev, skb); + break; + default: + r = -EINVAL; + } + + /* + * Packet received. Disabling intercept + * It should be reenabled if still needed + */ + if (!r) + fdp_nci_intercept_dec(ndev); + + kfree_skb(skb); + } +} + +int fdp_nci_send_cmd(struct nci_dev *ndev, u16 opcode, u8 plen, + void *payload) +{ + fdp_nci_intercept_inc(ndev); + return nci_send_cmd(ndev, opcode, plen, payload); +} + +int fdp_nci_request_firmware(struct nci_dev *ndev) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + struct device *dev = &info->phy->i2c_dev->dev; + u8 *data; + int r; + + r = request_firmware(&info->otp_patch, FDP_OTP_PATCH_NAME, dev); + if (r < 0) { + pr_info("FDP OTP patch request error\n"); + goto error; + } + + r = request_firmware(&info->ram_patch, FDP_RAM_PATCH_NAME, dev); + if (r < 0) { + pr_info("FDP RAM patch request error\n"); + goto release_otp_patch; + } + + data = (u8 *) info->otp_patch->data; + info->otp_patch_version = + data[FDP_FW_HEADER_SIZE] | + (data[FDP_FW_HEADER_SIZE + 1] << 8) | + (data[FDP_FW_HEADER_SIZE+2] << 16) | + (data[FDP_FW_HEADER_SIZE+3] << 24); + + data = (u8 *) info->ram_patch->data; + info->ram_patch_version = + data[FDP_FW_HEADER_SIZE] | + (data[FDP_FW_HEADER_SIZE + 1] << 8) | + (data[FDP_FW_HEADER_SIZE + 2] << 16) | + (data[FDP_FW_HEADER_SIZE + 3] << 24); + + pr_info("FDP OTP patch version: %d, size: %d\n", + info->otp_patch_version, (int) info->otp_patch->size); + pr_info("FDP RAM patch version: %d, size: %d\n", + info->ram_patch_version, (int) info->ram_patch->size); + + return 0; + +release_otp_patch: + release_firmware(info->otp_patch); +error: + return r; +} + +int fdp_nci_setup(struct nci_dev *ndev) +{ + /* Format: total length followed by an NCI packet */ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + char fdp_post_fw_vsc_cfg[] = { 0x1A, 0x2F, 0x23, 0x17, + 0x00, 0x00, 0x00, + 0x00, 0x04, 0x04, 0x2B, 0x20, 0xFF, + 0x09, 0x07, 0xFF, 0xFF, 0xFF, 0xFF, + 0x02, 0xFF, 0xFF, + 0x08, 0x03, 0x00, 0xFF, 0xFF }; + int r; + u8 patched = 0; + + pr_debug("%s\n", __func__); + + r = nci_init(ndev); + if (r) + goto error; + + /* Get RAM and OTP version */ + r = fdp_nci_get_versions(ndev); + if (r) + goto error; + + /* Load firmware from disk */ + r = fdp_nci_request_firmware(ndev); + if (r) + goto error; + + /* Update OTP */ + if (info->otp_version < info->otp_patch_version) { + + info->setup_patch_sent = 0; + info->setup_reset_ntf = 0; + info->setup_patch_ntf = 0; + + /* Patch init request */ + r = fdp_nci_patch_start(ndev, NCI_PATCH_TYPE_OTP); + if (r) + goto error; + + /* Patch data connection creation */ + r = fdp_nci_create_conn(ndev); + if (r) + goto error; + + /* Send the patch over the data connection */ + r = fdp_nci_send_patch(ndev, NCI_PATCH_TYPE_OTP); + if (r) + goto error; + + /* Wait for all the packets to be send over i2c */ + wait_event_interruptible(info->setup_wq, + info->setup_patch_sent == 1); + + /* Close the data connection */ + r = fdp_nci_close_conn(ndev); + if (r) + goto error; + + /* + * After we send the patch finish message we expect two + * notifications: NCI_OP_PROP_PATCH_NTF, + * NCI_OP_CORE_RESET_NTF + */ + fdp_nci_intercept_add(ndev, 2); + + /* Patch finish message */ + r = fdp_nci_patch_end(ndev); + if (r) { + pr_err("FDP OTP patch error %d\n", r); + r = -EINVAL; + goto error; + } + + /* If the patch notification didn't arrive yet, wait for it */ + wait_event_interruptible(info->setup_wq, info->setup_patch_ntf); + + /* Check if the patching was successful */ + r = info->setup_patch_status; + if (r) { + pr_err("FDP OTP patch error %d\n", r); + r = -EINVAL; + goto error; + } + + /* + * We need to wait for the reset notification before we + * can continue + */ + wait_event_interruptible(info->setup_wq, info->setup_reset_ntf); + + patched = 1; + } + + /* Update RAM */ + if (info->ram_version < info->ram_patch_version) { + + info->setup_patch_sent = 0; + info->setup_reset_ntf = 0; + info->setup_patch_ntf = 0; + + /* Patch init request */ + r = fdp_nci_patch_start(ndev, NCI_PATCH_TYPE_RAM); + if (r) + goto error; + + /* Patch data connection creation */ + r = fdp_nci_create_conn(ndev); + if (r) + goto error; + + /* Send the patch over the data connection */ + r = fdp_nci_send_patch(ndev, NCI_PATCH_TYPE_RAM); + if (r) + goto error; + + /* Wait for all the packets to be send over i2c */ + wait_event_interruptible(info->setup_wq, + info->setup_patch_sent == 1); + + /* Close the data connection */ + r = fdp_nci_close_conn(ndev); + if (r) + goto error; + + /* + * After we send the patch finish message we expect two + * notifications: NCI_OP_PROP_PATCH_NTF, + * NCI_OP_CORE_RESET_NTF + */ + fdp_nci_intercept_add(ndev, 2); + + /* Patch finish message */ + if (fdp_nci_patch_end(ndev)) { + r = -EINVAL; + goto error; + } + + /* If the patch notification didn't arrive yet, wait for it*/ + wait_event_interruptible(info->setup_wq, info->setup_patch_ntf); + + /* Check if the patching was successful */ + r = info->setup_patch_status; + if (r) { + pr_err("FDP RAM patch error %d\n", r); + r = -EINVAL; + goto error; + } + + /* + * We need to wait for the reset notification before we + * can continue + */ + wait_event_interruptible(info->setup_wq, info->setup_reset_ntf); + + patched = 1; + } + + /* If a patch was applied the new version is checked */ + if (patched) { + r = nci_init(ndev); + if (r) + goto error; + + r = fdp_nci_get_versions(ndev); + if (r) + goto error; + + if (info->otp_version != info->otp_patch_version || + info->ram_version != info->ram_patch_version) { + pr_err("FRP firmware update failed"); + r = -EINVAL; + } + } + + /* Check if the device has VSC */ + if (fdp_post_fw_vsc_cfg[0]) { + /* Set the vendor specific configuration */ + r = fdp_nci_set_production_data(ndev, fdp_post_fw_vsc_cfg[3], + &fdp_post_fw_vsc_cfg[4]); + if (r) + goto error; + } + + /* Set clock type and frequency */ + r = fdp_nci_set_clock(ndev, 0, 26000); + if (r) + goto error; + + /* + * We initialized the devices but thA NFC subsystem + * expects it to not be initialized. Also in order to + * apply the VSC FDP needs a reset + */ + r = nci_reset(ndev); + if (r) + goto error; + + pr_info("FDP Setup done\n"); + + return 0; + +error: + fdp_nci_intercept_disable(ndev); + pr_info("FDP Setup error %d\n", r); + return r; +} + +struct nci_ops nci_ops = { + .open = fdp_nci_open, + .close = fdp_nci_close, + .send = fdp_nci_send, + .setup = fdp_nci_setup, +}; + +int fdp_nci_probe(struct fdp_i2c_phy *phy, struct nfc_phy_ops *phy_ops, + struct nci_dev **ndevp, int tx_headroom, + int tx_tailroom) +{ + struct fdp_nci_info *info; + struct nci_dev *ndev; + u32 protocols; + int r; + + nfc_info(&phy->i2c_dev->dev, "%s\n", __func__); + + info = kzalloc(sizeof(struct fdp_nci_info), GFP_KERNEL); + if (!info) { + r = -ENOMEM; + goto err_info_alloc; + } + + info->phy = phy; + info->phy_ops = phy_ops; + info->state = FDP_ST_COLD; + mutex_init(&info->lock); + + skb_queue_head_init(&info->rx_q); + INIT_WORK(&info->rx_work, fdp_nci_rx_work); + + init_waitqueue_head(&info->setup_wq); + + protocols = NFC_PROTO_JEWEL_MASK | + NFC_PROTO_MIFARE_MASK | + NFC_PROTO_FELICA_MASK | + NFC_PROTO_ISO14443_MASK | + NFC_PROTO_ISO14443_B_MASK | + NFC_PROTO_NFC_DEP_MASK | + NFC_PROTO_ISO15693_MASK; + + ndev = nci_allocate_device(&nci_ops, protocols, tx_headroom, + tx_tailroom); + if (!ndev) { + pr_err("Cannot allocate nfc ndev\n"); + r = -ENOMEM; + goto err_alloc_ndev; + } + + r = nci_register_device(ndev); + if (r) + goto err_regdev; + + *ndevp = ndev; + info->ndev = ndev; + + nci_set_drvdata(ndev, info); + + return 0; + +err_regdev: + nci_free_device(ndev); +err_alloc_ndev: + kfree(info); +err_info_alloc: + return r; +} +EXPORT_SYMBOL(fdp_nci_probe); + +void fdp_nci_remove(struct nci_dev *ndev) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + + pr_info("%s\n", __func__); + + nci_unregister_device(ndev); + nci_free_device(ndev); + kfree(info); +} +EXPORT_SYMBOL(fdp_nci_remove); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION(DRIVER_DESC); diff --git a/drivers/nfc/fdp/fdp.h b/drivers/nfc/fdp/fdp.h new file mode 100644 index 0000000..5c05a2c --- /dev/null +++ b/drivers/nfc/fdp/fdp.h @@ -0,0 +1,115 @@ +/* ------------------------------------------------------------------------- + * Copyright (C) 2014-2016, Intel Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * ------------------------------------------------------------------------- */ + +#ifndef __LOCAL_FDP_H_ +#define __LOCAL_FDP_H_ + +#include <net/nfc/nci_core.h> +#include <linux/firmware.h> +#include <linux/workqueue.h> + +#define DRIVER_DESC "NCI NFC driver for Intel FDP" + +#define NCI_PATCH_TYPE_RAM 0x00 +#define NCI_PATCH_TYPE_OTP 0x01 +#define NCI_PATCH_TYPE_EOT 0xFF + +#define NCI_PARAM_ID_FW_RAM_VERSION 0xA0 +#define NCI_PARAM_ID_FW_OTP_VERSION 0xA1 +#define NCI_PARAM_ID_OTP_LIMITED_VERSION 0xC5 +#define NCI_PARAM_ID_KEY_INDEX_ID 0xC6 + +#define NCI_GID_PROP 0x0F + +struct fdp_i2c_phy { + struct i2c_client *i2c_dev; + struct nci_dev *ndev; + + unsigned int gpio_en; + unsigned int gpio_irq; + unsigned int en_polarity; + + int powered; + + uint16_t next_read_size; + + /* + * < 0 if hardware error occurred (e.g. i2c err) + * and prevents normal operation + */ + int hard_fault; +}; + +enum fdp_state { + FDP_ST_COLD, + FDP_ST_RESET, + FDP_ST_READY, + FDP_ST_ERROR, +}; + +struct fdp_nci_info { + struct nfc_phy_ops *phy_ops; + struct fdp_i2c_phy *phy; + struct nci_dev *ndev; + + enum fdp_state state; + struct mutex lock; + + const struct firmware *otp_patch; + const struct firmware *ram_patch; + u32 otp_patch_version; + u32 ram_patch_version; + + u32 otp_version; + u32 ram_version; + u32 limited_otp_version; + u8 key_index; + + u8 conn_id; + atomic_t intercept; + atomic_t data_pkt_counter; + void (*data_pkt_counter_cb)(struct nci_dev *ndev); + u8 setup_patch_sent; + u8 setup_patch_ntf; + u8 setup_patch_status; + u8 setup_reset_ntf; + wait_queue_head_t setup_wq; + + struct sk_buff_head rx_q; + struct work_struct rx_work; +}; + +int fdp_nci_probe(struct fdp_i2c_phy *phy, struct nfc_phy_ops *phy_ops, + struct nci_dev **ndev, int tx_headroom, int tx_tailroom); +void fdp_nci_remove(struct nci_dev *ndev); + +int fdp_nci_recv_frame(struct nci_dev *ndev, struct sk_buff *skb); +int fdp_nci_send_cmd(struct nci_dev *ndev, __u16 opcode, __u8 plen, + void *payload); + +int fdp_nci_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb); +int fdp_nci_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb); + +int fdp_nci_create_conn(struct nci_dev *ndev); +int fdp_nci_close_conn(struct nci_dev *ndev); +int fdp_nci_get_versions(struct nci_dev *ndev); +int fdp_nci_patch_start(struct nci_dev *ndev, u8 type); +int fdp_nci_patch_end(struct nci_dev *ndev); +int fdp_nci_send_patch(struct nci_dev *ndev, u8 type); +int fdp_nci_set_production_data(struct nci_dev *ndev, u8 len, char *data); +int fdp_nci_set_clock(struct nci_dev *ndev, u8 clock_type, u32 clock_freq); +void fdp_nci_set_data_pkt_counter(struct nci_dev *ndev, + void (*cb)(struct nci_dev *ndev), int count); + +#endif /* __LOCAL_FDP_H_ */ diff --git a/drivers/nfc/fdp/i2c.c b/drivers/nfc/fdp/i2c.c new file mode 100644 index 0000000..760f9e3 --- /dev/null +++ b/drivers/nfc/fdp/i2c.c @@ -0,0 +1,454 @@ +/* ------------------------------------------------------------------------- + * Copyright (C) 2014-2016, Intel Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * ------------------------------------------------------------------------- */ + +#include <linux/module.h> +#include <linux/acpi.h> +#include <linux/i2c.h> +#include <linux/interrupt.h> +#include <linux/nfc.h> +#include <linux/gpio.h> +#include <linux/platform_data/fdp.h> +#include <linux/delay.h> +#include <net/nfc/nfc.h> +#include <net/nfc/nci_core.h> + +#include "fdp.h" + +#define FDP_GPIO_NAME_IRQ "fdp_irq" +#define FDP_GPIO_NAME_EN "fdp_en" + +#define FDP_FRAME_HEADROOM 2 +#define FDP_FRAME_TAILROOM 1 + +#define FDP_NCI_I2C_MIN_PAYLOAD 5 +#define FDP_NCI_I2C_MAX_PAYLOAD 25 + +#define RST_RESET 0 +#define RST_NO_RESET 1 + +#define FDP_NCI_I2C_DRIVER_NAME "fdp_nci_i2c" + +#define I2C_DUMP_SKB(info, skb) \ +do { \ + pr_debug("%s:\n", info); \ + print_hex_dump(KERN_DEBUG, "i2c: ", DUMP_PREFIX_OFFSET, \ + 16, 1, (skb)->data, (skb)->len, 0); \ +} while (0) + +static void fdp_nci_i2c_reset(struct fdp_i2c_phy *phy) +{ + /* Reset RST/WakeUP for at least 2 micro-second */ + gpio_set_value_cansleep(phy->gpio_en, RST_RESET); + usleep_range(1000, 4000); + gpio_set_value_cansleep(phy->gpio_en, RST_NO_RESET); + usleep_range(10000, 14000); +} + +static int fdp_nci_i2c_enable(void *phy_id) +{ + struct fdp_i2c_phy *phy = phy_id; + + dev_dbg(&phy->i2c_dev->dev, "%s\n", __func__); + + fdp_nci_i2c_reset(phy); + phy->powered = 1; + + return 0; +} + +static void fdp_nci_i2c_disable(void *phy_id) +{ + struct fdp_i2c_phy *phy = phy_id; + + dev_dbg(&phy->i2c_dev->dev, "%s\n", __func__); + + fdp_nci_i2c_reset(phy); + phy->powered = 0; +} + +static void fdp_nci_i2c_add_len_lrc(struct sk_buff *skb) +{ + u8 lrc = 0; + u16 len, i; + + /* Add length header */ + len = skb->len; + *skb_push(skb, 1) = len & 0xff; + *skb_push(skb, 1) = len >> 8; + + /* Compute and add lrc */ + for (i = 0; i < len + 2; i++) + lrc ^= skb->data[i]; + + *skb_put(skb, 1) = lrc; +} + +static void fdp_nci_i2c_remove_len_lrc(struct sk_buff *skb) +{ + skb_pull(skb, FDP_FRAME_HEADROOM); + skb_trim(skb, skb->len - FDP_FRAME_TAILROOM); +} + +static int fdp_nci_i2c_write(void *phy_id, struct sk_buff *skb) +{ + struct fdp_i2c_phy *phy = phy_id; + struct i2c_client *client = phy->i2c_dev; + int r; + + if (phy->hard_fault != 0) + return phy->hard_fault; + + fdp_nci_i2c_add_len_lrc(skb); + + I2C_DUMP_SKB("fdp_nci_i2c_write", skb); + + r = i2c_master_send(client, skb->data, skb->len); + if (r == -EREMOTEIO) { /* Retry, chip was in standby */ + usleep_range(1000, 4000); + r = i2c_master_send(client, skb->data, skb->len); + } + + if (r < 0 || r != skb->len) + dev_dbg(&client->dev, "%s: error err=%d len=%d\n", + __func__, r, skb->len); + + if (r >= 0) { + if (r != skb->len) { + phy->hard_fault = r; + r = -EREMOTEIO; + } else { + r = 0; + } + } + + fdp_nci_i2c_remove_len_lrc(skb); + + return r; +} + +static struct nfc_phy_ops i2c_phy_ops = { + .write = fdp_nci_i2c_write, + .enable = fdp_nci_i2c_enable, + .disable = fdp_nci_i2c_disable, +}; + +static int fdp_nci_i2c_acpi_request_resources(struct i2c_client *client) +{ + struct fdp_i2c_phy *phy = i2c_get_clientdata(client); + const struct acpi_device_id *id; + struct gpio_desc *gpiod_en, *gpiod_irq; + struct device *dev; + int ret; + + dev_dbg(&client->dev, "%s\n", __func__); + + if (!client) + return -EINVAL; + + dev = &client->dev; + + /* Match the struct device against a given list of ACPI IDs */ + id = acpi_match_device(dev->driver->acpi_match_table, dev); + if (!id) + return -ENODEV; + + /* Get EN GPIO from ACPI */ + gpiod_en = devm_gpiod_get_index(dev, FDP_GPIO_NAME_EN, 1); + if (IS_ERR(gpiod_en)) { + nfc_err(dev, "Unable to get EN GPIO\n"); + return -ENODEV; + } + + phy->gpio_en = desc_to_gpio(gpiod_en); + + /* Configuration EN GPIO */ + ret = gpiod_direction_output(gpiod_en, 0); + if (ret) { + nfc_err(dev, "Fail EN pin direction\n"); + return ret; + } + + /* Get IRQ GPIO */ + gpiod_irq = devm_gpiod_get_index(dev, FDP_GPIO_NAME_IRQ, 0); + if (IS_ERR(gpiod_irq)) { + nfc_err(dev, + "Unable to get IRQ GPIO\n"); + return -ENODEV; + } + + phy->gpio_irq = desc_to_gpio(gpiod_irq); + + /* Configure IRQ GPIO */ + ret = gpiod_direction_input(gpiod_irq); + if (ret) { + nfc_err(dev, "Fail IRQ pin direction\n"); + return ret; + } + + /* Map the pin to an IRQ */ + ret = gpiod_to_irq(gpiod_irq); + if (ret < 0) { + nfc_err(dev, "Fail pin IRQ mapping\n"); + return ret; + } + + nfc_info(dev, "GPIO resource, no:%d irq:%d\n", + desc_to_gpio(gpiod_irq), ret); + client->irq = ret; + + return 0; +} + +static int fdp_nci_i2c_read(struct fdp_i2c_phy *phy, struct sk_buff **skb) +{ + int r, len; + u8 tmp[FDP_NCI_I2C_MAX_PAYLOAD], lrc, k; + u16 i; + struct i2c_client *client = phy->i2c_dev; + + *skb = NULL; + + /* Read the length packet and the data packet */ + for (k = 0; k < 2; k++) { + + len = phy->next_read_size; + + r = i2c_master_recv(client, tmp, len); + if (r != len) { + dev_dbg(&client->dev, "%s: i2c recv err: %d\n", + __func__, r); + goto flush; + } + + /* Check packet integruty */ + for (lrc = i = 0; i < r; i++) + lrc ^= tmp[i]; + + /* + * LRC check failed. This may due to transmission error or + * desynchronization between driver and FDP. Drop the paquet + * and force resynchronization + */ + if (lrc) { + dev_dbg(&client->dev, "%s: corrupted packet\n", + __func__); + phy->next_read_size = 5; + goto flush; + } + + /* Packet that contains a length */ + if (tmp[0] == 0 && tmp[1] == 0) { + + phy->next_read_size = (tmp[2] << 8) + tmp[3] + 3; + + } else { + + phy->next_read_size = FDP_NCI_I2C_MIN_PAYLOAD; + + *skb = alloc_skb(len, GFP_KERNEL); + if (*skb == NULL) { + r = -ENOMEM; + goto flush; + } + + memcpy(skb_put(*skb, len), tmp, len); + I2C_DUMP_SKB("fdp_nci_i2c_read", *skb); + + fdp_nci_i2c_remove_len_lrc(*skb); + } + } + + return 0; + +flush: + /* Flush the remaining data */ + if (i2c_master_recv(client, tmp, sizeof(tmp)) < 0) + r = -EREMOTEIO; + + return r; +} + +static irqreturn_t fdp_nci_i2c_irq_thread_fn(int irq, void *phy_id) +{ + struct fdp_i2c_phy *phy = phy_id; + struct i2c_client *client; + struct sk_buff *skb; + int r; + + client = phy->i2c_dev; + dev_dbg(&client->dev, "%s\n", __func__); + + if (!phy || irq != phy->i2c_dev->irq) { + WARN_ON_ONCE(1); + return IRQ_NONE; + } + + r = fdp_nci_i2c_read(phy, &skb); + + if (r == -EREMOTEIO) + return IRQ_HANDLED; + else if (r == -ENOMEM || r == -EBADMSG) + return IRQ_HANDLED; + + if (skb != NULL) + fdp_nci_recv_frame(phy->ndev, skb); + + return IRQ_HANDLED; +} + + +static int fdp_nci_i2c_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct fdp_i2c_phy *phy; + struct fdp_nfc_platform_data *pdata; + int r = 0; + + dev_dbg(&client->dev, "%s\n", __func__); + dev_dbg(&client->dev, "IRQ: %d\n", client->irq); + + if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { + nfc_err(&client->dev, "No I2C_FUNC_I2C\n"); + return -ENODEV; + } + + phy = devm_kzalloc(&client->dev, sizeof(struct fdp_i2c_phy), + GFP_KERNEL); + if (!phy) + return -ENOMEM; + + phy->i2c_dev = client; + phy->next_read_size = FDP_NCI_I2C_MIN_PAYLOAD; + i2c_set_clientdata(client, phy); + + pdata = client->dev.platform_data; + + /* Using platform data. */ + if (pdata) { + + if (pdata->request_resources == NULL) { + nfc_err(&client->dev, "request_resources() missing\n"); + return -EINVAL; + } + + r = pdata->request_resources(client); + if (r) { + nfc_err(&client->dev, + "Cannot get platform resources\n"); + return r; + } + + phy->gpio_en = pdata->get_gpio(NFC_GPIO_ENABLE); + phy->gpio_irq = pdata->get_gpio(NFC_GPIO_IRQ); + + /* Using ACPI */ + } else if (ACPI_HANDLE(&client->dev)) { + + r = fdp_nci_i2c_acpi_request_resources(client); + if (r) { + nfc_err(&client->dev, + "Cannot get ACPI data\n"); + return r; + } + + } else { + nfc_err(&client->dev, "No platform data\n"); + return -EINVAL; + } + + r = request_threaded_irq(client->irq, NULL, fdp_nci_i2c_irq_thread_fn, + IRQF_TRIGGER_RISING | IRQF_ONESHOT, + FDP_NCI_I2C_DRIVER_NAME, phy); + + if (r < 0) { + nfc_err(&client->dev, "Unable to register IRQ handler\n"); + goto err_rti; + } + + r = fdp_nci_probe(phy, &i2c_phy_ops, &phy->ndev, + FDP_FRAME_HEADROOM, FDP_FRAME_TAILROOM); + + if (r < 0) { + nfc_err(&client->dev, "NCI probing error\n"); + goto err_nci; + } + + nfc_info(&client->dev, "FDP I2C driver loaded\n"); + return 0; + +err_nci: + free_irq(client->irq, phy); + +err_rti: + if (!pdata) + gpio_free(phy->gpio_en); + else if (pdata->free_resources) + pdata->free_resources(); + + return r; +} + +static int fdp_nci_i2c_remove(struct i2c_client *client) +{ + struct fdp_i2c_phy *phy = i2c_get_clientdata(client); + struct fdp_nfc_platform_data *pdata = client->dev.platform_data; + + dev_dbg(&client->dev, "%s\n", __func__); + + fdp_nci_remove(phy->ndev); + + if (phy->powered) + fdp_nci_i2c_disable(phy); + + free_irq(client->irq, phy); + + /* No platform data, GPIOs have been requested by this driver */ + if (!pdata) { + gpio_free(phy->gpio_en); + /* Using platform data */ + } else if (pdata->free_resources) { + pdata->free_resources(); + } + + return 0; +} + +static struct i2c_device_id fdp_nci_i2c_id_table[] = { + {"INT339A", 0}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, fdp_nci_i2c_id_table); + + +static const struct acpi_device_id fdp_nci_i2c_acpi_match[] = { + {"INT339A", 0}, + {} +}; + +static struct i2c_driver fdp_nci_i2c_driver = { + .driver = { + .name = FDP_NCI_I2C_DRIVER_NAME, + .owner = THIS_MODULE, + .acpi_match_table = ACPI_PTR(fdp_nci_i2c_acpi_match), + }, + .id_table = fdp_nci_i2c_id_table, + .probe = fdp_nci_i2c_probe, + .remove = fdp_nci_i2c_remove, +}; + +module_i2c_driver(fdp_nci_i2c_driver); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION(DRIVER_DESC); diff --git a/drivers/nfc/fdp/ntf.c b/drivers/nfc/fdp/ntf.c new file mode 100644 index 0000000..5e4adb8 --- /dev/null +++ b/drivers/nfc/fdp/ntf.c @@ -0,0 +1,68 @@ +/* ------------------------------------------------------------------------- + * Copyright (C) 2014-2016, Intel Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * ------------------------------------------------------------------------- */ + +#include <linux/module.h> +#include <linux/nfc.h> +#include <linux/i2c.h> +#include <linux/firmware.h> +#include <net/nfc/nci_core.h> + +#include "fdp.h" + +#define NCI_OP_PROP_PATCH_NTF nci_opcode_pack(NCI_GID_PROP, 0x08) +#define NCI_OP_CORE_RESET_NTF nci_opcode_pack(NCI_GID_CORE, 0x00) + +void fdp_nci_core_reset_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + + info->setup_reset_ntf = 1; + wake_up(&info->setup_wq); +} + +void fdp_nci_prop_patch_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + + info->setup_patch_ntf = 1; + info->setup_patch_status = skb->data[0]; + wake_up(&info->setup_wq); +} + +int fdp_nci_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb) +{ + u16 ntf_opcode; + int r = 0; + + ntf_opcode = nci_opcode(skb->data); + + /* strip the nci control header */ + skb_pull(skb, NCI_CTRL_HDR_SIZE); + + switch (ntf_opcode) { + case NCI_OP_CORE_RESET_NTF: + fdp_nci_core_reset_ntf_packet(ndev, skb); + break; + case NCI_OP_PROP_PATCH_NTF: + fdp_nci_prop_patch_ntf_packet(ndev, skb); + break; + default: + r = -EINVAL; + } + + /* restore the nci control header */ + skb_push(skb, NCI_CTRL_HDR_SIZE); + + return r; +} diff --git a/drivers/nfc/fdp/rsp.c b/drivers/nfc/fdp/rsp.c new file mode 100644 index 0000000..ce40e19 --- /dev/null +++ b/drivers/nfc/fdp/rsp.c @@ -0,0 +1,117 @@ +/* ------------------------------------------------------------------------- + * Copyright (C) 2014-2016, Intel Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * ------------------------------------------------------------------------- */ + +#include <linux/module.h> +#include <linux/nfc.h> +#include <linux/i2c.h> +#include <linux/firmware.h> +#include <net/nfc/nci_core.h> + +#include "fdp.h" + +#define NCI_OP_PROP_PATCH_RSP nci_opcode_pack(NCI_GID_PROP, 0x08) +#define NCI_OP_PROP_SET_PRODUCTION_DATA_RSP nci_opcode_pack(NCI_GID_PROP, 0x23) +#define NCI_OP_CORE_GET_CONFIG_RSP nci_opcode_pack(NCI_GID_CORE, 0x03) + +struct nci_core_get_config_rsp { + u8 status; + u8 count; + u8 data[0]; +}; + +void fdp_nci_prop_patch_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb) +{ + u8 status = skb->data[0]; + + pr_debug("status 0x%x\n", status); + nci_req_complete_driver(ndev, status); +} + +void fdp_nci_prop_set_production_data_rsp_packet(struct nci_dev *ndev, + struct sk_buff *skb) +{ + u8 status = skb->data[0]; + + pr_debug("status 0x%x\n", status); + nci_req_complete_driver(ndev, status); +} + +void fdp_nci_core_get_config_rsp_packet(struct nci_dev *ndev, + struct sk_buff *skb) +{ + struct fdp_nci_info *info = nci_get_drvdata(ndev); + struct nci_core_get_config_rsp *rsp = (void *) skb->data; + u8 i, *p; + + if (rsp->status == NCI_STATUS_OK) { + + p = rsp->data; + for (i = 0; i < 4; i++) { + + switch (*p++) { + case NCI_PARAM_ID_FW_RAM_VERSION: + p++; + info->ram_version = le32_to_cpup((u32 *) p); + p += 4; + break; + case NCI_PARAM_ID_FW_OTP_VERSION: + p++; + info->otp_version = le32_to_cpup((u32 *) p); + p += 4; + break; + case NCI_PARAM_ID_OTP_LIMITED_VERSION: + p++; + info->otp_version = le32_to_cpup((u32 *) p); + p += 4; + break; + case NCI_PARAM_ID_KEY_INDEX_ID: + p++; + info->key_index = *p++; + } + } + } + + pr_debug("FDP OTP version %d\n", info->otp_version); + pr_debug("FDP RAM version %d\n", info->ram_version); + pr_debug("FDP key index %d\n", info->key_index); + + pr_debug("status 0x%x\n", rsp->status); + nci_req_complete_driver(ndev, rsp->status); +} + +int fdp_nci_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb) +{ + u16 ntf_opcode; + int r = 0; + + ntf_opcode = nci_opcode(skb->data); + skb_pull(skb, NCI_CTRL_HDR_SIZE); + + switch (ntf_opcode) { + case NCI_OP_CORE_GET_CONFIG_RSP: + fdp_nci_core_get_config_rsp_packet(ndev, skb); + break; + case NCI_OP_PROP_PATCH_RSP: + fdp_nci_prop_patch_rsp_packet(ndev, skb); + break; + case NCI_OP_PROP_SET_PRODUCTION_DATA_RSP: + fdp_nci_prop_set_production_data_rsp_packet(ndev, skb); + break; + default: + r = -EINVAL; + } + + skb_push(skb, NCI_CTRL_HDR_SIZE); + return r; +} diff --git a/include/linux/platform_data/fdp.h b/include/linux/platform_data/fdp.h new file mode 100644 index 0000000..5a77095 --- /dev/null +++ b/include/linux/platform_data/fdp.h @@ -0,0 +1,33 @@ +/* ------------------------------------------------------------------------- + * Copyright (C) 2014-2016, Intel Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * ------------------------------------------------------------------------- */ + + +#ifndef _FDP_H_ +#define _FDP_H_ + +#include <linux/i2c.h> + +enum { + NFC_GPIO_ENABLE, + NFC_GPIO_IRQ, +}; + +/* board config */ +struct fdp_nfc_platform_data { + int (*request_resources)(struct i2c_client *client); + void (*free_resources)(void); + int (*get_gpio)(int type); +}; + +#endif /* _FDP_H_ */ -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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