Add 'nxp/opensource/driver/' from commit 'c6f0de7127de042241c6f2ac7c60c5deb77d7d85'
git-subtree-dir: nxp/opensource/driver git-subtree-mainline:47018f8d6dgit-subtree-split:c6f0de7127Change-Id: repo: https://git.codelinaro.org/clo/la/platform/vendor/nxp/opensource/driver tag: LA.VENDOR.14.3.0.r1-17300-lanai.QSSI15.0
This commit is contained in:
David Wronek
333
nxp/opensource/driver/nfc/common_nxp.c
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333
nxp/opensource/driver/nfc/common_nxp.c
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@@ -0,0 +1,333 @@
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2015-2021, The Linux Foundation. All rights reserved.
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* Copyright (c) 2019-2021 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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/*
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* Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
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*
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******************************************************************************/
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#include "common.h"
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#include "common_nxp.h"
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/**
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* get_nfcc_chip_type_dl() - get chip type in fw download command;
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* @nfc_dev: nfc device data structure
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*
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* Perform get version command and determine chip
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* type from response.
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*
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* @Return: enum chip_types value
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*
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*/
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static enum chip_types get_nfcc_chip_type_dl(struct nfc_dev *nfc_dev)
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{
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int ret = 0;
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uint8_t *cmd = nfc_dev->write_kbuf;
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uint8_t *rsp = nfc_dev->read_kbuf;
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enum chip_types chip_type = CHIP_UNKNOWN;
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*cmd++ = DL_CMD;
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*cmd++ = DL_GET_VERSION_CMD_PAYLOAD_LEN;
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*cmd++ = DL_GET_VERSION_CMD_ID;
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*cmd++ = DL_PAYLOAD_BYTE_ZERO;
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*cmd++ = DL_PAYLOAD_BYTE_ZERO;
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*cmd++ = DL_PAYLOAD_BYTE_ZERO;
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*cmd++ = DL_GET_VERSION_CMD_CRC_1;
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*cmd++ = DL_GET_VERSION_CMD_CRC_2;
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pr_debug("NxpDrv: %s:Sending GET_VERSION cmd of size = %d\n", __func__, DL_GET_VERSION_CMD_LEN);
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ret = nfc_dev->nfc_write(nfc_dev, nfc_dev->write_kbuf, DL_GET_VERSION_CMD_LEN,
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MAX_RETRY_COUNT);
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if (ret <= 0) {
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pr_err("NxpDrv: %s: - nfc get version cmd error ret %d\n", __func__, ret);
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goto err;
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}
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memset(rsp, 0x00, DL_GET_VERSION_RSP_LEN_2);
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pr_debug("NxpDrv: %s:Reading response of GET_VERSION cmd\n", __func__);
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ret = nfc_dev->nfc_read(nfc_dev, rsp, DL_GET_VERSION_RSP_LEN_2, NCI_CMD_RSP_TIMEOUT_MS);
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if (ret <= 0) {
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pr_err("NxpDrv: %s: - nfc get version rsp error ret %d\n", __func__, ret);
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goto err;
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}
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if (rsp[0] == FW_MSG_CMD_RSP && ret >= DL_GET_VERSION_RSP_LEN_2) {
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nfc_dev->fw_major_version = rsp[FW_MAJOR_VER_OFFSET];
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if (rsp[FW_ROM_CODE_VER_OFFSET] == SN1XX_ROM_VER &&
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rsp[FW_MAJOR_VER_OFFSET] == SN1xx_MAJOR_VER)
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chip_type = CHIP_SN1XX;
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else if (rsp[FW_ROM_CODE_VER_OFFSET] == SN220_ROM_VER &&
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rsp[FW_MAJOR_VER_OFFSET] == SN220_MAJOR_VER)
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chip_type = CHIP_SN220;
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pr_debug("NxpDrv: %s:NFC Chip Type 0x%02x Rom Version 0x%02x FW Minor 0x%02x Major 0x%02x\n",
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__func__, rsp[GET_VERSION_RSP_CHIP_TYPE_OFFSET],
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rsp[FW_ROM_CODE_VER_OFFSET],
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rsp[GET_VERSION_RSP_MINOR_VERSION_OFFSET],
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rsp[FW_MAJOR_VER_OFFSET]);
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nfc_dev->nqx_info.info.chip_type = rsp[GET_VERSION_RSP_CHIP_TYPE_OFFSET];
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nfc_dev->nqx_info.info.rom_version = rsp[FW_ROM_CODE_VER_OFFSET];
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nfc_dev->nqx_info.info.fw_minor = rsp[GET_VERSION_RSP_MINOR_VERSION_OFFSET];
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nfc_dev->nqx_info.info.fw_major = rsp[FW_MAJOR_VER_OFFSET];
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}
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err:
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return chip_type;
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}
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/**
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* get_nfcc_session_state_dl() - gets the session state
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* @nfc_dev: nfc device data structure
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*
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* Performs get session command and determine
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* the nfcc state based on session status.
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*
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* @Return nfcc state based on session status.
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* NFC_STATE_FW_TEARED if sessionis not closed
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* NFC_STATE_FW_DWL if session closed
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* NFC_STATE_UNKNOWN in error cases.
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*/
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enum nfc_state_flags get_nfcc_session_state_dl(struct nfc_dev *nfc_dev)
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{
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int ret = 0;
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uint8_t *cmd = nfc_dev->write_kbuf;
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uint8_t *rsp = nfc_dev->read_kbuf;
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enum nfc_state_flags nfc_state = NFC_STATE_UNKNOWN;
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*cmd++ = DL_CMD;
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*cmd++ = DL_GET_SESSION_STATE_CMD_PAYLOAD_LEN;
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*cmd++ = DL_GET_SESSION_CMD_ID;
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*cmd++ = DL_PAYLOAD_BYTE_ZERO;
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*cmd++ = DL_PAYLOAD_BYTE_ZERO;
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*cmd++ = DL_PAYLOAD_BYTE_ZERO;
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*cmd++ = DL_GET_SESSION_CMD_CRC_1;
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*cmd++ = DL_GET_SESSION_CMD_CRC_2;
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pr_debug("NxpDrv: %s:Sending GET_SESSION_STATE cmd of size = %d\n", __func__,
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DL_GET_SESSION_STATE_CMD_LEN);
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ret = nfc_dev->nfc_write(nfc_dev, nfc_dev->write_kbuf, DL_GET_SESSION_STATE_CMD_LEN,
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MAX_RETRY_COUNT);
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if (ret <= 0) {
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pr_err("NxpDrv: %s: - nfc get session cmd error ret %d\n", __func__, ret);
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goto err;
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}
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memset(rsp, 0x00, DL_GET_SESSION_STATE_RSP_LEN);
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pr_debug("NxpDrv: %s:Reading response of GET_SESSION_STATE cmd\n", __func__);
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ret = nfc_dev->nfc_read(nfc_dev, rsp, DL_GET_SESSION_STATE_RSP_LEN, NCI_CMD_RSP_TIMEOUT_MS);
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if (ret <= 0) {
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pr_err("NxpDrv: %s: - nfc get session rsp error ret %d\n", __func__, ret);
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goto err;
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}
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if (rsp[0] != FW_MSG_CMD_RSP) {
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pr_err("NxpDrv: %s: - nfc invalid get session state rsp\n", __func__);
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goto err;
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}
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pr_debug("NxpDrv: Response bytes are %02x%02x%02x%02x%02x%02x%02x%02x\n",
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rsp[0], rsp[1], rsp[2], rsp[3], rsp[4], rsp[5], rsp[6], rsp[7]);
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/*verify fw in non-teared state */
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if (rsp[GET_SESSION_STS_OFF] != NFCC_SESSION_STS_CLOSED) {
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pr_err("NxpDrv: %s NFCC booted in FW teared state\n", __func__);
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nfc_state = NFC_STATE_FW_TEARED;
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} else {
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pr_info("NxpDrv: %s NFCC booted in FW DN mode\n", __func__);
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nfc_state = NFC_STATE_FW_DWL;
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}
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err:
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return nfc_state;
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}
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/**
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* get_nfcc_chip_type() - get nfcc chip type in nci mode.
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* @nfc_dev: nfc device data structure.
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*
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* Function to perform nci core reset and extract
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* chip type from the response.
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*
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* @Return: enum chip_types value
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*
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*/
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static enum chip_types get_nfcc_chip_type(struct nfc_dev *nfc_dev)
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{
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int ret = 0;
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uint8_t major_version = 0;
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uint8_t rom_version = 0;
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uint8_t *cmd = nfc_dev->write_kbuf;
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uint8_t *rsp = nfc_dev->read_kbuf;
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enum chip_types chip_type = CHIP_UNKNOWN;
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*cmd++ = NCI_CMD;
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*cmd++ = NCI_CORE_RESET_CMD_OID;
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*cmd++ = NCI_CORE_RESET_CMD_PAYLOAD_LEN;
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*cmd++ = NCI_CORE_RESET_KEEP_CONFIG;
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pr_debug("NxpDrv: %s:Sending NCI Core Reset cmd of size = %d\n", __func__, NCI_RESET_CMD_LEN);
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ret = nfc_dev->nfc_write(nfc_dev, nfc_dev->write_kbuf, NCI_RESET_CMD_LEN, NO_RETRY);
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if (ret <= 0) {
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pr_err("NxpDrv: %s: - nfc nci core reset cmd error ret %d\n", __func__, ret);
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goto err;
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}
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/* to flush out debug NTF this delay is required */
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usleep_range(NCI_RESET_RESP_READ_DELAY, NCI_RESET_RESP_READ_DELAY + 100);
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nfc_dev->nfc_enable_intr(nfc_dev);
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memset(rsp, 0x00, NCI_RESET_RSP_LEN);
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pr_debug("NxpDrv: %s:Reading NCI Core Reset rsp\n", __func__);
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ret = nfc_dev->nfc_read(nfc_dev, rsp, NCI_RESET_RSP_LEN, NCI_CMD_RSP_TIMEOUT_MS);
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if (ret <= 0) {
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pr_err("NxpDrv: %s: - nfc nci core reset rsp error ret %d\n", __func__, ret);
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goto err_disable_intr;
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}
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pr_debug("NxpDrv: %s: nci core reset response 0x%02x%02x%02x%02x\n",
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__func__, rsp[0], rsp[1], rsp[2], rsp[3]);
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if (rsp[0] != NCI_RSP) {
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/* reset response failed response*/
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pr_err("NxpDrv: %s invalid nci core reset response\n", __func__);
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goto err_disable_intr;
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}
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memset(rsp, 0x00, NCI_RESET_NTF_LEN);
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/* read nci rest response ntf */
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ret = nfc_dev->nfc_read(nfc_dev, rsp, NCI_RESET_NTF_LEN, NCI_CMD_RSP_TIMEOUT_MS);
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if (ret <= 0) {
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pr_err("NxpDrv: %s - nfc nci rest rsp ntf error status %d\n", __func__, ret);
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goto err_disable_intr;
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}
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if (rsp[0] == NCI_NTF) {
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/* read version info from NCI Reset Notification */
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rom_version = rsp[NCI_HDR_LEN + rsp[NCI_PAYLOAD_LEN_IDX] - 3];
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major_version = rsp[NCI_HDR_LEN + rsp[NCI_PAYLOAD_LEN_IDX] - 2];
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/* determine chip type based on version info */
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if (rom_version == SN1XX_ROM_VER && major_version == SN1xx_MAJOR_VER)
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chip_type = CHIP_SN1XX;
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else if (rom_version == SN220_ROM_VER && major_version == SN220_MAJOR_VER)
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chip_type = CHIP_SN220;
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pr_debug("NxpDrv: %s:NCI Core Reset ntf 0x%02x%02x%02x%02x\n",
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__func__, rsp[0], rsp[1], rsp[2], rsp[3]);
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nfc_dev->nqx_info.info.chip_type = rsp[NCI_HDR_LEN + rsp[NCI_PAYLOAD_LEN_IDX] -
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NFC_CHIP_TYPE_OFF];
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nfc_dev->nqx_info.info.rom_version = rom_version;
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nfc_dev->nqx_info.info.fw_major = major_version;
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nfc_dev->nqx_info.info.fw_minor = rsp[NCI_HDR_LEN + rsp[NCI_PAYLOAD_LEN_IDX] -
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NFC_FW_MINOR_OFF];
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}
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err_disable_intr:
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nfc_dev->nfc_disable_intr(nfc_dev);
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err:
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return chip_type;
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}
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/**
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* validate_download_gpio() - validate download gpio.
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* @nfc_dev: nfc_dev device data structure.
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* @chip_type: chip type of the platform.
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*
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* Validates dwnld gpio should configured for supported and
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* should not be configured for unsupported platform.
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*
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* @Return: true if gpio validation successful ortherwise
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* false if validation fails.
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*/
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static bool validate_download_gpio(struct nfc_dev *nfc_dev, enum chip_types chip_type)
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{
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bool status = false;
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struct platform_gpio *nfc_gpio;
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if (nfc_dev == NULL) {
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pr_err("NxpDrv: %s nfc devices structure is null\n", __func__);
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return status;
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}
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nfc_gpio = &nfc_dev->configs.gpio;
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if (chip_type == CHIP_SN1XX) {
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/* gpio should be configured for SN1xx */
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status = gpio_is_valid(nfc_gpio->dwl_req);
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} else if (chip_type == CHIP_SN220) {
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/* gpio should not be configured for SN220 */
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set_valid_gpio(nfc_gpio->dwl_req, 0);
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gpio_free(nfc_gpio->dwl_req);
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nfc_gpio->dwl_req = -EINVAL;
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status = true;
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}
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return status;
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}
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/* Check for availability of NFC controller hardware */
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int nfcc_hw_check(struct nfc_dev *nfc_dev)
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{
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int ret = 0;
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enum nfc_state_flags nfc_state = NFC_STATE_UNKNOWN;
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enum chip_types chip_type = CHIP_UNKNOWN;
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struct platform_gpio *nfc_gpio = &nfc_dev->configs.gpio;
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/*get fw version in nci mode*/
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gpio_set_ven(nfc_dev, 1);
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gpio_set_ven(nfc_dev, 0);
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gpio_set_ven(nfc_dev, 1);
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chip_type = get_nfcc_chip_type(nfc_dev);
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/*get fw version in fw dwl mode*/
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if (chip_type == CHIP_UNKNOWN) {
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nfc_dev->nfc_enable_intr(nfc_dev);
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/*Chip is unknown, initially assume with fw dwl pin enabled*/
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set_valid_gpio(nfc_gpio->dwl_req, 1);
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gpio_set_ven(nfc_dev, 0);
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gpio_set_ven(nfc_dev, 1);
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chip_type = get_nfcc_chip_type_dl(nfc_dev);
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/*get the state of nfcc normal/teared in fw dwl mode*/
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} else {
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nfc_state = NFC_STATE_NCI;
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}
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/*validate gpio config required as per the chip*/
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if (!validate_download_gpio(nfc_dev, chip_type)) {
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pr_info("NxpDrv: %s gpio validation fail\n", __func__);
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ret = -ENXIO;
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goto err;
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}
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/*check whether the NFCC is in FW DN or Teared state*/
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if (nfc_state != NFC_STATE_NCI)
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nfc_state = get_nfcc_session_state_dl(nfc_dev);
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/*nfcc state specific operations */
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switch (nfc_state) {
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case NFC_STATE_FW_TEARED:
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pr_warn("NxpDrv: %s: - NFCC FW Teared State\n", __func__);
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break;
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case NFC_STATE_FW_DWL:
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case NFC_STATE_NCI:
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break;
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case NFC_STATE_UNKNOWN:
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default:
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ret = -ENXIO;
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pr_err("NxpDrv: %s: - NFCC HW not available\n", __func__);
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goto err;
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}
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nfc_dev->nfc_state = nfc_state;
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err:
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nfc_dev->nfc_disable_intr(nfc_dev);
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set_valid_gpio(nfc_gpio->dwl_req, 0);
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gpio_set_ven(nfc_dev, 0);
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gpio_set_ven(nfc_dev, 1);
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nfc_dev->nfc_ven_enabled = true;
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return ret;
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}
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