Updated corresponding to - NFC_AR_00_6000_11.02.00_OpnSrc
这个提交包含在：
Nanjesh
229
nfc/common.h
229
nfc/common.h
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/******************************************************************************
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* Copyright (C) 2019-2020 NXP
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* *
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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******************************************************************************/
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#ifndef _COMMON_H_
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#define _COMMON_H_
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#include <linux/types.h>
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#include <linux/version.h>
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#include <linux/semaphore.h>
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#include <linux/completion.h>
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#include <linux/ioctl.h>
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#include <linux/cdev.h>
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#include <linux/spinlock.h>
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#include <linux/gpio.h>
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#ifdef CONFIG_NXP_NFC_I2C
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#include "i2c_drv.h"
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#endif
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#ifdef CONFIG_NXP_NFC_I3C
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#include "i3c_drv.h"
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#endif
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#define DEV_COUNT 1 /* Max device count for this driver */
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#define CLASS_NAME "nfc" /* i2c device class */
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// NFC character device name, this will be in /dev/
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#define NFC_CHAR_DEV_NAME "pn553"
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#define NCI_HDR_LEN 3 /* HDR length of NCI packet */
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#define NCI_PAYLOAD_LEN_OFFSET 2
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#define NCI_PAYLOAD_IDX 3
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#define MAX_NCI_PAYLOAD_LEN (255)
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#define MAX_BUFFER_SIZE (NCI_HDR_LEN + MAX_NCI_PAYLOAD_LEN)
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#define MAX_RETRY_COUNT (3)
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#define NO_RETRY (1)
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#define MAX_IRQ_WAIT_TIME (90)
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#define WAKEUP_SRC_TIMEOUT (2000)
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/* ESE_COLD_RESET MACROS */
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#define COLD_RESET_CMD_LEN 3
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#define COLD_RESET_RSP_LEN 4
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#define COLD_RESET_CMD_GID 0x2F
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#define COLD_RESET_CMD_PAYLOAD_LEN 0x00
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#define COLD_RESET_RSP_GID 0x4F
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#define COLD_RESET_OID 0x1E
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/*
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* ESE_RESET: Bit mask to check if ese_reset_guard timer is started (bit b7)
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* */
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#define ESE_COLD_RESET_GUARD_TIMER_MASK (0x80)
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/*
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* ESE_RESET: Guard time to allow eSE cold reset from the driver
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* */
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#define ESE_COLD_RESET_GUARD_TIME (3000) //3s
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/*
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* ESE_RESET: NCI command response timeout
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*/
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#define ESE_COLD_RESET_CMD_RSP_TIMEOUT (2000) //2s
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/*
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* ESE_RESET: Guard time to reboot the JCOP
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*/
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#define ESE_COLD_RESET_REBOOT_GUARD_TIME (50) //50ms
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/*
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* ESE_RESET: Checks if eSE cold reset has been requested
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*/
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#define IS_COLD_RESET_REQ(arg) ((arg == ESE_COLD_RESET_NFC) || \
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(arg == ESE_COLD_RESET_SPI) || (arg == ESE_COLD_RESET_UWB))
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/*
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* ESE_RESET: macro evaluates to 1 if eSE cold reset response is received
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* */
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#define IS_COLD_RESET_RSP(buf) ((COLD_RESET_RSP_GID == buf[0]) && (COLD_RESET_OID == buf[1]))
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#define NFC_MAGIC 0xE9
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/*Ioctls*/
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// The type should be aligned with MW HAL definitions
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#define NFC_SET_PWR _IOW(NFC_MAGIC, 0x01, long)
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#define ESE_SET_PWR _IOW(NFC_MAGIC, 0x02, long)
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#define ESE_GET_PWR _IOR(NFC_MAGIC, 0x03, long)
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#define NFC_GET_PLATFORM_TYPE _IO(NFC_MAGIC, 0x0B)
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#define DTS_IRQ_GPIO_STR "nxp,pn544-irq"
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#define DTS_VEN_GPIO_STR "nxp,pn544-ven"
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#define DTS_FWDN_GPIO_STR "nxp,pn544-fw-dwnld"
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#define DTS_ESE_GPIO_STR "nxp,pn544-ese-pwr"
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enum ese_ioctl_request {
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/* eSE POWER ON */
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ESE_POWER_ON = 0,
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/* eSE POWER OFF */
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ESE_POWER_OFF,
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/* eSE POWER STATE */
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ESE_POWER_STATE,
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/* eSE COLD RESET */
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ESE_COLD_RESET_NFC,
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ESE_COLD_RESET_SPI,
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ESE_COLD_RESET_UWB,
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};
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enum nfcc_ioctl_request {
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/* NFC disable request with VEN LOW */
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NFC_POWER_OFF = 0,
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/* NFC enable request with VEN Toggle */
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NFC_POWER_ON,
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/* firmware download request with VEN Toggle */
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NFC_FW_DWL_VEN_TOGGLE,
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/* ISO reset request */
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NFC_ISO_RESET,
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/* request for firmware download gpio HIGH */
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NFC_FW_DWL_HIGH,
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/* VEN hard reset request */
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NFC_VEN_FORCED_HARD_RESET,
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/* request for firmware download gpio LOW */
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NFC_FW_DWL_LOW,
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/*for HDR size change in FW mode */
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NFC_FW_HDR_LEN,
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/* Cold reset request for eSE */
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NFC_ESE_COLD_RST,
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};
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/*nfc platform interface type*/
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enum interface_flags {
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/*I2C physical IF for NFCC */
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PLATFORM_IF_I2C = 0,
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/*I3C physical IF for NFCC */
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PLATFORM_IF_I3C,
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};
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/*nfc platform interface type*/
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enum ven_policy_flags {
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/*VEN usage in lagacy platform */
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VEN_LEGACY = 0,
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/*VEN reset only to recover from failure usecases */
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VEN_ALWAYS_ENABLED,
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};
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/* Power state for IBI handing, mainly needed to defer the IBI handling
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for the IBI received in suspend state to do it later in resume call*/
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enum pm_state_flags {
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PM_STATE_NORMAL = 0,
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PM_STATE_SUSPEND,
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PM_STATE_IBI_BEFORE_RESUME,
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};
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/* Enum for GPIO values*/
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enum gpio_values {
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GPIO_INPUT = 0x0,
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GPIO_OUTPUT = 0x1,
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GPIO_HIGH = 0x2,
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GPIO_OUTPUT_HIGH = 0x3,
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GPIO_IRQ = 0x4,
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};
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// NFC GPIO variables
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typedef struct platform_gpio {
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unsigned int irq;
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unsigned int ven;
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unsigned int dwl_req;
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unsigned int ese_pwr;
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} platform_gpio_t;
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//Features specific Parameters
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typedef struct cold_reset {
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wait_queue_head_t read_wq;
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bool rsp_pending;
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unsigned int ntf;
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uint8_t status;
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/* NFC device opened by MW */
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bool nfc_enabled;
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/* eSe cold reset guard timer is started */
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bool timer_started;
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struct mutex sync_mutex;
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struct timer_list timer;
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} cold_reset_t;
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/* Device specific structure */
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typedef struct nfc_dev {
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wait_queue_head_t read_wq;
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struct mutex read_mutex;
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struct mutex ese_access_mutex;
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struct mutex dev_ref_mutex;
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unsigned int dev_ref_count;
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struct class *nfc_class;
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struct device *nfc_device;
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struct cdev c_dev;
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dev_t devno;
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/* Interface flag */
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uint8_t interface;
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/*store the ven functioning */
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uint8_t ven_policy;
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/* NFC VEN pin state */
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bool nfc_ven_enabled;
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union {
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#ifdef CONFIG_NXP_NFC_I2C
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i2c_dev_t i2c_dev;
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#endif
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#ifdef CONFIG_NXP_NFC_I3C
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i3c_dev_t i3c_dev;
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#endif
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};
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platform_gpio_t gpio;
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cold_reset_t cold_reset;
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} nfc_dev_t;
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int nfc_dev_open(struct inode *inode, struct file *filp);
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int nfc_dev_close(struct inode *inode, struct file *filp);
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long nfc_dev_ioctl(struct file *pfile, unsigned int cmd, unsigned long arg);
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int nfc_parse_dt(struct device *dev, platform_gpio_t *nfc_gpio,
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uint8_t interface);
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int nfc_misc_register(nfc_dev_t *nfc_dev,
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const struct file_operations *nfc_fops,
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int count, char *devname, char *classname);
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void nfc_misc_unregister(nfc_dev_t *nfc_dev, int count);
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int configure_gpio(unsigned int gpio, int flag);
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void read_cold_reset_rsp(nfc_dev_t *nfc_dev, char *buf);
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void gpio_set_ven(nfc_dev_t *nfc_dev, int value);
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void gpio_free_all(nfc_dev_t *nfc_dev);
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#endif //_COMMON_H_
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