6d80433c1d
The output file is /d/ipc_logging/nq-nci/log_cont. Change-Id: I4d6bf8f2b888ac3d720b8515682ee1b3fa769866 Signed-off-by: Karthik Poosa <kpoosa2@codeaurora.org>
272 lines
6.9 KiB
C
272 lines
6.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2015-2020, The Linux Foundation. All rights reserved.
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*/
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#ifndef _NFC_COMMON_H_
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#define _NFC_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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#include <linux/fs.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/interrupt.h>
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#include <linux/delay.h>
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#include <linux/uaccess.h>
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#include <linux/slab.h>
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#include <linux/nfcinfo.h>
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#include <linux/regulator/consumer.h>
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#include <linux/ipc_logging.h>
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#include "nfc_i2c_drv.h"
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#include "nfc_i3c_drv.h"
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// Max device count for this driver
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#define DEV_COUNT 1
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// NFC device class
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#define CLASS_NAME "nfc"
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// NFC character device name, this will be in /dev/
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#define NFC_CHAR_DEV_NAME "nq-nci"
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// HDR length of NCI packet
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#define NCI_HDR_LEN 3
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#define NCI_PAYLOAD_IDX 3
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#define NCI_PAYLOAD_LEN_IDX 2
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#define NCI_RESET_CMD_LEN (4)
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#define NCI_RESET_RSP_LEN (4)
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#define NCI_RESET_NTF_LEN (13)
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#define NCI_GET_VERSION_CMD_LEN (8)
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#define NCI_GET_VERSION_RSP_LEN (12)
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// Below offsets should be subtracted from core reset ntf len
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#define NFC_CHIP_TYPE_OFF (3)
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#define NFC_ROM_VERSION_OFF (2)
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#define NFC_FW_MAJOR_OFF (1)
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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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#define MAX_NCI_PAYLOAD_LEN (255)
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/*
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* From MW 11.04 buffer size increased to support
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* frame size of 554 in FW download mode
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* Frame len(2) + Frame Header(6) + DATA(512) + HASH(32) + CRC(2) + RFU(4)
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*/
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#define MAX_BUFFER_SIZE (558)
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// Maximum retry count for standby writes
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#define MAX_RETRY_COUNT (3)
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// Retry count for normal write
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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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#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, unsigned int)
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#define ESE_SET_PWR _IOW(NFC_MAGIC, 0x02, unsigned int)
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#define ESE_GET_PWR _IOR(NFC_MAGIC, 0x03, unsigned int)
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#define NFC_GET_PLATFORM_TYPE _IO(NFC_MAGIC, 0x04)
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#define DTS_IRQ_GPIO_STR "qcom,sn-irq"
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#define DTS_VEN_GPIO_STR "qcom,sn-ven"
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#define DTS_FWDN_GPIO_STR "qcom,sn-firm"
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#define DTS_CLKREQ_GPIO_STR "qcom,sn-clkreq"
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#define DTS_CLKSRC_GPIO_STR "qcom,clk-src"
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#define NFC_LDO_SUPPLY_DT_NAME "qcom,sn-vdd-1p8"
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#define NFC_LDO_SUPPLY_NAME "qcom,sn-vdd-1p8-supply"
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#define NFC_LDO_VOL_DT_NAME "qcom,sn-vdd-1p8-voltage"
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#define NFC_LDO_CUR_DT_NAME "qcom,sn-vdd-1p8-current"
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//as per SN1x0 datasheet
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#define NFC_VDDIO_MIN 1650000 //in uV
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#define NFC_VDDIO_MAX 1950000 //in uV
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#define NFC_CURRENT_MAX 157000 //in uA
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#define NUM_OF_IPC_LOG_PAGES (2)
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#define PKT_MAX_LEN (4) // no of max bytes to print for cmd/resp
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#define GET_IPCLOG_MAX_PKT_LEN(c) ((c > PKT_MAX_LEN) ? PKT_MAX_LEN : c)
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#define NFCLOG_IPC(nfc_dev, log_to_dmesg, x...) \
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do { \
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ipc_log_string(nfc_dev->ipcl, x); \
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if (log_to_dmesg) { \
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if (nfc_dev->nfc_device) \
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dev_err((nfc_dev->nfc_device), x); \
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else \
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pr_err(x); \
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} \
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} while (0)
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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 COLD RESET */
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ESE_COLD_RESET,
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/* eSE POWER STATE */
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ESE_POWER_STATE
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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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/* NFC enable without VEN gpio modification */
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NFC_ENABLE,
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/* NFC disable without VEN gpio modification */
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NFC_DISABLE,
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/*for HDR size change in FW mode */
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NFC_FW_HDR_LEN,
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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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/*
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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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*/
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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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enum nfcc_chip_variant {
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NFCC_SN100_A = 0xa3, /**< NFCC SN100_A */
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NFCC_SN100_B = 0xa4, /**< NFCC SN100_B */
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NFCC_NOT_SUPPORTED = 0xFF /**< NFCC is not supported */
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};
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// NFC GPIO variables
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struct platform_gpio {
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unsigned int irq;
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unsigned int ven;
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unsigned int clkreq;
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unsigned int dwl_req;
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};
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// NFC LDO entries from DT
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struct platform_ldo {
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int vdd_levels[2];
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int max_current;
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};
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//Features specific Parameters
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struct cold_reset {
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wait_queue_head_t read_wq;
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bool rsp_pending;
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uint8_t status;
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/* Is NFC enabled from UI */
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bool is_nfc_enabled;
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};
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/* Device specific structure */
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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 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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/* NFC VEN pin state */
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bool nfc_ven_enabled;
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bool is_vreg_enabled;
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bool is_ese_session_active;
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union {
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struct i2c_dev i2c_dev;
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struct i3c_dev i3c_dev;
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};
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struct platform_gpio gpio;
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struct platform_ldo ldo;
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struct cold_reset cold_reset;
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struct regulator *reg;
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/* read buffer*/
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size_t kbuflen;
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u8 *kbuf;
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union nqx_uinfo nqx_info;
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void *ipcl;
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int (*nfc_read)(struct nfc_dev *dev,
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char *buf, size_t count);
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int (*nfc_write)(struct nfc_dev *dev,
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const char *buf, const size_t count, int max_retry_cnt);
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int (*nfc_enable_intr)(struct nfc_dev *dev);
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int (*nfc_disable_intr)(struct nfc_dev *dev);
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};
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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, struct platform_gpio *nfc_gpio,
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struct platform_ldo *ldo, uint8_t interface);
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int nfc_misc_probe(struct nfc_dev *nfc_dev,
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const struct file_operations *nfc_fops, int count,
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char *devname, char *classname);
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void nfc_misc_remove(struct nfc_dev *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(struct nfc_dev *nfc_dev, char *header);
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void gpio_set_ven(struct nfc_dev *nfc_dev, int value);
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int nfcc_hw_check(struct nfc_dev *nfc_dev);
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int nfc_ldo_config(struct device *dev, struct nfc_dev *nfc_dev);
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int nfc_ldo_vote(struct nfc_dev *nfc_dev);
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int nfc_ldo_unvote(struct nfc_dev *nfc_dev);
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#endif //_NFC_COMMON_H_
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