680 lines
16 KiB
C
Executable File
680 lines
16 KiB
C
Executable File
/*
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* Copyright (C) 2012, Samsung Electronics Co. Ltd. All Rights Reserved.
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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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*/
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#include "ssp.h"
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#ifdef CONFIG_OF
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#include <linux/of_gpio.h>
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#endif
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/* ssp mcu device ID */
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#define DEVICE_ID 0x55
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#ifdef CONFIG_HAS_EARLYSUSPEND
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static void ssp_early_suspend(struct early_suspend *handler);
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static void ssp_late_resume(struct early_suspend *handler);
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#endif
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void ssp_enable(struct ssp_data *data, bool enable)
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{
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pr_info("%s, enable = %d, old enable = %d\n",
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__func__, enable, data->bSspShutdown);
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if (enable && data->bSspShutdown) {
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data->bSspShutdown = false;
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enable_irq(data->iIrq);
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if(data->mcu_int1 != 90) /* Temporary code for KS01 REV3 */
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enable_irq_wake(data->iIrq);
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} else if (!enable && !data->bSspShutdown) {
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data->bSspShutdown = true;
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disable_irq(data->iIrq);
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if(data->mcu_int1 != 90) /* Temporary code for KS01 REV3 */
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disable_irq_wake(data->iIrq);
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} else
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pr_err("%s, enable error\n", __func__);
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}
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/************************************************************************/
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/* interrupt happened due to transition/change of SSP MCU */
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/************************************************************************/
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static irqreturn_t sensordata_irq_thread_fn(int iIrq, void *dev_id)
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{
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struct ssp_data *data = dev_id;
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struct timespec ts;
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ts = ktime_to_timespec(alarm_get_elapsed_realtime());
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data->timestamp = ts.tv_sec * 1000000000ULL + ts.tv_nsec;
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select_irq_msg(data);
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data->uIrqCnt++;
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return IRQ_HANDLED;
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}
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/*************************************************************************/
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/* initialize sensor hub */
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/*************************************************************************/
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static void initialize_variable(struct ssp_data *data)
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{
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int iSensorIndex;
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for (iSensorIndex = 0; iSensorIndex < SENSOR_MAX; iSensorIndex++) {
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data->adDelayBuf[iSensorIndex] = DEFUALT_POLLING_DELAY;
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data->aiCheckStatus[iSensorIndex] = INITIALIZATION_STATE;
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}
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/* AKM Daemon Library */
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/*data->aiCheckStatus[GEOMAGNETIC_SENSOR] = NO_SENSOR_STATE;
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data->aiCheckStatus[ORIENTATION_SENSOR] = NO_SENSOR_STATE;*/
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memset(data->uFactorydata, 0, sizeof(char) * FACTORY_DATA_MAX);
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atomic_set(&data->aSensorEnable, 0);
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data->iLibraryLength = 0;
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data->uSensorState = 0;
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data->uFactorydataReady = 0;
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data->uFactoryProxAvg[0] = 0;
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data->uResetCnt = 0;
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data->uInstFailCnt = 0;
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data->uTimeOutCnt = 0;
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data->uSsdFailCnt = 0;
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data->uBusyCnt = 0;
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data->uIrqCnt = 0;
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data->uIrqFailCnt = 0;
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data->uMissSensorCnt = 0;
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data->bSspShutdown = true;
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data->bProximityRawEnabled = false;
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data->bGeomagneticRawEnabled = false;
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data->bMcuIRQTestSuccessed = false;
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data->bBarcodeEnabled = false;
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data->bAccelAlert = false;
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data->accelcal.x = 0;
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data->accelcal.y = 0;
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data->accelcal.z = 0;
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data->gyrocal.x = 0;
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data->gyrocal.y = 0;
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data->gyrocal.z = 0;
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data->magoffset.x = 0;
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data->magoffset.y = 0;
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data->magoffset.z = 0;
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data->iPressureCal = 0;
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data->uProxCanc = 0;
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data->uProxHiThresh = 0;
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data->uProxLoThresh = 0;
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data->uGyroDps = GYROSCOPE_DPS500;
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data->uIr_Current = 0;
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data->mcu_device = NULL;
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data->acc_device = NULL;
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data->gyro_device = NULL;
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data->mag_device = NULL;
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data->prs_device = NULL;
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data->prox_device = NULL;
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data->light_device = NULL;
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data->ges_device = NULL;
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data->step_count_total = 0;
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initialize_function_pointer(data);
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}
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int initialize_mcu(struct ssp_data *data)
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{
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int iRet = 0;
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iRet = get_chipid(data);
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pr_info("[SSP] MCU device ID = %d, reading ID = %d\n", DEVICE_ID, iRet);
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if (iRet != DEVICE_ID) {
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if (iRet < 0) {
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pr_err("[SSP]: %s - MCU is not working : 0x%x\n",
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__func__, iRet);
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} else {
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pr_err("[SSP]: %s - MCU identification failed\n",
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__func__);
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iRet = -ENODEV;
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}
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goto out;
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}
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iRet = set_sensor_position(data);
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if (iRet < 0) {
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pr_err("[SSP]: %s - set_sensor_position failed\n", __func__);
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goto out;
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}
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data->uSensorState = get_sensor_scanning_info(data);
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if (data->uSensorState == 0) {
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pr_err("[SSP]: %s - get_sensor_scanning_info failed\n",
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__func__);
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iRet = ERROR;
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goto out;
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}
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iRet = SUCCESS;
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out:
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return iRet;
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}
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static int initialize_irq(struct ssp_data *data)
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{
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int iRet, iIrq;
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iIrq = gpio_to_irq(data->mcu_int1);
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pr_info("[SSP]: requesting IRQ %d\n", iIrq);
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iRet = request_threaded_irq(iIrq, NULL, sensordata_irq_thread_fn,
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IRQF_TRIGGER_FALLING, "SSP_Int", data);
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if (iRet < 0) {
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pr_err("[SSP]: %s - request_irq(%d) failed for gpio %d (%d)\n",
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__func__, iIrq, iIrq, iRet);
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goto err_request_irq;
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}
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/* start with interrupts disabled */
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data->iIrq = iIrq;
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disable_irq(data->iIrq);
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return 0;
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err_request_irq:
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gpio_free(data->mcu_int1);
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return iRet;
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}
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static void work_function_firmware_update(struct work_struct *work)
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{
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struct ssp_data *data = container_of((struct delayed_work *)work,
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struct ssp_data, work_firmware);
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int iRet = 0;
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pr_info("[SSP] : %s\n", __func__);
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iRet = forced_to_download_binary(data, KERNEL_BINARY);
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if (iRet < 0) {
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ssp_dbg("[SSP]: %s - forced_to_download_binary failed!\n",
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__func__);
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return;
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}
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data->uCurFirmRev = get_firmware_rev(data);
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pr_info("[SSP] MCU Firm Rev : New = %8u\n",
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data->uCurFirmRev);
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}
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static int ssp_parse_dt(struct device *dev,
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struct ssp_data *data)
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{
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struct device_node *np = dev->of_node;
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enum of_gpio_flags flags;
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int errorno = 0;
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data->mcu_int1 = of_get_named_gpio_flags(np, "ssp,mcu_int1-gpio",
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0, &flags);
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if (data->mcu_int1 < 0) {
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errorno = data->mcu_int1;
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goto dt_exit;
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}
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data->mcu_int2 = of_get_named_gpio_flags(np, "ssp,mcu_int2-gpio",
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0, &flags);
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if (data->mcu_int2 < 0) {
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errorno = data->mcu_int2;
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goto dt_exit;
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}
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data->ap_int = of_get_named_gpio_flags(np, "ssp,ap_int-gpio",
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0, &flags);
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if (data->ap_int < 0) {
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errorno = data->ap_int;
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goto dt_exit;
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}
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data->rst = of_get_named_gpio_flags(np, "ssp,rst-gpio",
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0, &flags);
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if (data->rst < 0) {
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errorno = data->rst ;
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goto dt_exit;
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}
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data->chg = of_get_named_gpio_flags(np, "ssp,chg-gpio",
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0, &flags);
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if (data->chg < 0) {
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errorno = data->chg ;
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goto dt_exit;
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}
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if (of_property_read_u32(np, "ssp,acc-position", &data->accel_position))
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data->accel_position = 0;
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if (of_property_read_u32(np, "ssp,mag-position", &data->mag_position))
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data->mag_position = 0;
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if (of_property_read_u32(np, "ssp,sns-combination", &data->sns_combination))
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data->sns_combination = 0;
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if (of_property_read_u32(np, "ssp,ap-rev", &data->ap_rev))
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data->ap_rev = 0;
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errorno = gpio_request(data->chg, "MCU_CHG");
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if (errorno) {
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printk(KERN_ERR "failed to request MCU_CHG for SSP\n");
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goto dt_exit;
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}
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gpio_direction_input(data->chg);
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errorno = gpio_request(data->mcu_int1, "mpu_ap_int1");
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if (errorno) {
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printk(KERN_ERR "failed to request MCU_INT2 for SSP\n");
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goto dt_exit;
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}
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errorno = gpio_direction_input(data->mcu_int1);
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if (errorno) {
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printk(KERN_ERR "failed to set mcu_int1 as input\n");
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goto dt_exit;
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}
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errorno = gpio_request(data->mcu_int2, "MCU_INT2");
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if (errorno) {
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printk(KERN_ERR "failed to request MCU_INT2 for SSP\n");
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goto dt_exit;
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}
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gpio_direction_input(data->mcu_int2);
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errorno = gpio_request(data->ap_int, "AP_MCU_INT");
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if (errorno) {
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printk(KERN_ERR "failed to request AP_INT for SSP\n");
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goto dt_exit;
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}
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gpio_direction_output(data->ap_int, 1);
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errorno = gpio_request(data->rst, "MCU_RST");
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if (errorno) {
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printk(KERN_ERR "failed to request MCU_RST for SSP\n");
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goto dt_exit;
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}
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gpio_direction_output(data->rst, 1);
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data->reg_hub = devm_regulator_get(dev, "hub_vreg");
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if (IS_ERR(data->reg_hub)) {
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pr_err("[SSP] could not get hub_vreg, %ld\n",
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PTR_ERR(data->reg_hub));
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} else {
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regulator_enable(data->reg_hub);
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}
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data->reg_sns= devm_regulator_get(dev, "psns_vreg");
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if (IS_ERR(data->reg_hub)) {
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pr_err("[SSP] could not get psns_vreg, %ld\n",
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PTR_ERR(data->reg_sns));
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} else {
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regulator_enable(data->reg_sns);
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}
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dt_exit:
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return errorno;
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}
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static int ssp_probe(struct i2c_client *client,
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const struct i2c_device_id *devid)
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{
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int iRet = 0;
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struct ssp_data *data;
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struct ssp_platform_data *pdata;
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#if 0 // not yet integrated in KK
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if (poweroff_charging == 1 || recovery_mode == 1) {
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pr_err("[SSP] probe exit : lpm %d recovery %d \n",
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poweroff_charging, recovery_mode);
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return -ENODEV;
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}
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#endif
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data = kzalloc(sizeof(*data), GFP_KERNEL);
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if (data == NULL) {
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pr_err("[SSP]: %s - failed to allocate memory for data\n",
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__func__);
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iRet = -ENOMEM;
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goto exit;
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}
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if (client->dev.of_node) {
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iRet = ssp_parse_dt(&client->dev, data);
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if (iRet) {
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pr_err("[SSP]: %s - Failed to parse DT\n", __func__);
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goto err_setup;
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}
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data->ssp_changes = SSP_MCU_L5; /* K330, MPU L5*/
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} else {
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pdata = client->dev.platform_data;
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if (pdata == NULL) {
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pr_err("[SSP]: %s - platform_data is null\n", __func__);
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iRet = -ENOMEM;
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goto err_setup;
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}
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data->wakeup_mcu = pdata->wakeup_mcu;
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data->check_mcu_ready = pdata->check_mcu_ready;
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data->check_mcu_busy = pdata->check_mcu_busy;
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data->set_mcu_reset = pdata->set_mcu_reset;
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data->read_chg = pdata->read_chg;
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/* AP system_rev */
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if (pdata->check_ap_rev)
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data->ap_rev = pdata->check_ap_rev();
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else
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data->ap_rev = 0;
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/* For changed devices */
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if (pdata->check_changes)
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data->ssp_changes = pdata->check_changes();
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else
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data->ssp_changes = SSP_MCU_L5; /* K330, MPU L5*/
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/* Get sensor positions */
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if (pdata->get_positions)
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pdata->get_positions(&data->accel_position,
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&data->mag_position);
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else if (client->dev.of_node == NULL) {
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data->accel_position = 0;
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data->mag_position = 0;
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}
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}
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data->bProbeIsDone = false;
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data->fw_dl_state = FW_DL_STATE_NONE;
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data->client = client;
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i2c_set_clientdata(client, data);
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#ifdef CONFIG_SENSORS_SSP_SHTC1
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mutex_init(&data->cp_temp_adc_lock);
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#endif
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if (((data->wakeup_mcu == NULL)
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|| (data->check_mcu_ready == NULL)
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|| (data->check_mcu_busy == NULL)
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|| (data->set_mcu_reset == NULL)
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|| (data->read_chg == NULL))
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&& (client->dev.of_node == NULL)) {
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pr_err("[SSP]: %s - function callback is null\n", __func__);
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iRet = -EIO;
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goto err_reset_null;
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}
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pr_info("\n#####################################################\n");
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INIT_DELAYED_WORK(&data->work_firmware, work_function_firmware_update);
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/* check boot loader binary */
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data->fw_dl_state = check_fwbl(data);
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initialize_variable(data);
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if (data->fw_dl_state == FW_DL_STATE_NONE) {
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iRet = initialize_mcu(data);
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if (iRet == ERROR) {
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data->uResetCnt++;
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toggle_mcu_reset(data);
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msleep(SSP_SW_RESET_TIME);
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initialize_mcu(data);
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} else if (iRet < ERROR) {
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pr_err("[SSP]: %s - initialize_mcu failed\n", __func__);
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goto err_read_reg;
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}
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}
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wake_lock_init(&data->ssp_wake_lock,
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WAKE_LOCK_SUSPEND, "ssp_wake_lock");
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iRet = initialize_input_dev(data);
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if (iRet < 0) {
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pr_err("[SSP]: %s - could not create input device\n", __func__);
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goto err_input_register_device;
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}
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iRet = initialize_debug_timer(data);
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if (iRet < 0) {
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pr_err("[SSP]: %s - could not create workqueue\n", __func__);
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goto err_create_workqueue;
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}
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iRet = initialize_irq(data);
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if (iRet < 0) {
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pr_err("[SSP]: %s - could not create irq\n", __func__);
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goto err_setup_irq;
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}
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iRet = initialize_sysfs(data);
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if (iRet < 0) {
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pr_err("[SSP]: %s - could not create sysfs\n", __func__);
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goto err_sysfs_create;
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}
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iRet = initialize_event_symlink(data);
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if (iRet < 0) {
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pr_err("[SSP]: %s - could not create symlink\n", __func__);
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goto err_symlink_create;
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}
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#ifdef CONFIG_HAS_EARLYSUSPEND
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data->early_suspend.suspend = ssp_early_suspend;
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data->early_suspend.resume = ssp_late_resume;
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register_early_suspend(&data->early_suspend);
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#endif
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#ifdef CONFIG_SENSORS_SSP_SENSORHUB
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/* init sensorhub device */
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iRet = ssp_sensorhub_initialize(data);
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if (iRet < 0) {
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pr_err("%s: ssp_sensorhub_initialize err(%d)", __func__, iRet);
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ssp_sensorhub_remove(data);
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}
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#endif
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ssp_enable(data, true);
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pr_info("[SSP]: %s - probe success!\n", __func__);
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enable_debug_timer(data);
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iRet = 0;
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if (data->fw_dl_state == FW_DL_STATE_NEED_TO_SCHEDULE) {
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pr_info("[SSP]: Firmware update is scheduled\n");
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schedule_delayed_work(&data->work_firmware,
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msecs_to_jiffies(1000));
|
|
data->fw_dl_state = FW_DL_STATE_SCHEDULED;
|
|
} else if (data->fw_dl_state == FW_DL_STATE_FAIL)
|
|
data->bSspShutdown = true;
|
|
data->bProbeIsDone = true;
|
|
|
|
goto exit;
|
|
|
|
err_symlink_create:
|
|
remove_sysfs(data);
|
|
err_sysfs_create:
|
|
free_irq(data->iIrq, data);
|
|
gpio_free(data->mcu_int1);
|
|
err_setup_irq:
|
|
destroy_workqueue(data->debug_wq);
|
|
err_create_workqueue:
|
|
remove_input_dev(data);
|
|
err_input_register_device:
|
|
wake_lock_destroy(&data->ssp_wake_lock);
|
|
err_read_reg:
|
|
err_reset_null:
|
|
#ifdef CONFIG_SENSORS_SSP_SHTC1
|
|
mutex_destroy(&data->cp_temp_adc_lock);
|
|
#endif
|
|
err_setup:
|
|
kfree(data);
|
|
pr_err("[SSP]: %s - probe failed!\n", __func__);
|
|
exit:
|
|
pr_info("#####################################################\n\n");
|
|
return iRet;
|
|
}
|
|
|
|
static void ssp_shutdown(struct i2c_client *client)
|
|
{
|
|
struct ssp_data *data = i2c_get_clientdata(client);
|
|
|
|
func_dbg();
|
|
if (data->bProbeIsDone == false)
|
|
goto exit;
|
|
|
|
if (data->fw_dl_state >= FW_DL_STATE_SCHEDULED &&
|
|
data->fw_dl_state < FW_DL_STATE_DONE) {
|
|
pr_err("%s, cancel_delayed_work_sync state = %d\n",
|
|
__func__, data->fw_dl_state);
|
|
cancel_delayed_work_sync(&data->work_firmware);
|
|
}
|
|
|
|
ssp_enable(data, false);
|
|
|
|
#ifdef CONFIG_HAS_EARLYSUSPEND
|
|
unregister_early_suspend(&data->early_suspend);
|
|
#endif
|
|
|
|
disable_debug_timer(data);
|
|
|
|
free_irq(data->iIrq, data);
|
|
gpio_free(data->mcu_int1);
|
|
|
|
remove_sysfs(data);
|
|
remove_event_symlink(data);
|
|
remove_input_dev(data);
|
|
|
|
#ifdef CONFIG_SENSORS_SSP_SENSORHUB
|
|
ssp_sensorhub_remove(data);
|
|
#endif
|
|
|
|
del_timer_sync(&data->debug_timer);
|
|
cancel_work_sync(&data->work_debug);
|
|
destroy_workqueue(data->debug_wq);
|
|
wake_lock_destroy(&data->ssp_wake_lock);
|
|
#ifdef CONFIG_SENSORS_SSP_SHTC1
|
|
mutex_destroy(&data->cp_temp_adc_lock);
|
|
#endif
|
|
toggle_mcu_reset(data);
|
|
/* gpio_set_value_cansleep(data->rst, 0); */
|
|
exit:
|
|
kfree(data);
|
|
}
|
|
|
|
#ifdef CONFIG_HAS_EARLYSUSPEND
|
|
static void ssp_early_suspend(struct early_suspend *handler)
|
|
{
|
|
struct ssp_data *data;
|
|
data = container_of(handler, struct ssp_data, early_suspend);
|
|
|
|
func_dbg();
|
|
disable_debug_timer(data);
|
|
|
|
#ifdef CONFIG_SENSORS_SSP_SENSORHUB
|
|
/* give notice to user that AP goes to sleep */
|
|
ssp_sensorhub_report_notice(data, MSG2SSP_AP_STATUS_SLEEP);
|
|
ssp_sleep_mode(data);
|
|
#else
|
|
if (atomic_read(&data->aSensorEnable) > 0)
|
|
ssp_sleep_mode(data);
|
|
#endif
|
|
}
|
|
|
|
static void ssp_late_resume(struct early_suspend *handler)
|
|
{
|
|
struct ssp_data *data;
|
|
data = container_of(handler, struct ssp_data, early_suspend);
|
|
|
|
func_dbg();
|
|
enable_debug_timer(data);
|
|
|
|
#ifdef CONFIG_SENSORS_SSP_SENSORHUB
|
|
/* give notice to user that AP goes to sleep */
|
|
ssp_sensorhub_report_notice(data, MSG2SSP_AP_STATUS_WAKEUP);
|
|
ssp_resume_mode(data);
|
|
#else
|
|
if (atomic_read(&data->aSensorEnable) > 0)
|
|
ssp_resume_mode(data);
|
|
#endif
|
|
}
|
|
|
|
#else /* CONFIG_HAS_EARLYSUSPEND */
|
|
|
|
static int ssp_suspend(struct device *dev)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct ssp_data *data = i2c_get_clientdata(client);
|
|
|
|
func_dbg();
|
|
|
|
if (SUCCESS != ssp_send_cmd(data, MSG2SSP_AP_STATUS_SUSPEND))
|
|
pr_err("[SSP]: %s MSG2SSP_AP_STATUS_SUSPEND failed\n",
|
|
__func__);
|
|
disable_irq(data->iIrq);
|
|
return 0;
|
|
}
|
|
|
|
static int ssp_resume(struct device *dev)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct ssp_data *data = i2c_get_clientdata(client);
|
|
|
|
enable_irq(data->iIrq);
|
|
func_dbg();
|
|
|
|
if (SUCCESS != ssp_send_cmd(data, MSG2SSP_AP_STATUS_RESUME))
|
|
pr_err("[SSP]: %s MSG2SSP_AP_STATUS_RESUME failed\n",
|
|
__func__);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct dev_pm_ops ssp_pm_ops = {
|
|
.suspend = ssp_suspend,
|
|
.resume = ssp_resume
|
|
};
|
|
#endif /* CONFIG_HAS_EARLYSUSPEND */
|
|
|
|
static const struct i2c_device_id ssp_id[] = {
|
|
{"ssp", 0},
|
|
{}
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(i2c, ssp_id);
|
|
#ifdef CONFIG_OF
|
|
static struct of_device_id ssp_match_table[] = {
|
|
{ .compatible = "ssp,ATUC128",},
|
|
{},
|
|
};
|
|
#else
|
|
#define mpu6500_match_table NULL
|
|
#endif
|
|
|
|
static struct i2c_driver ssp_driver = {
|
|
.probe = ssp_probe,
|
|
.shutdown = ssp_shutdown,
|
|
.id_table = ssp_id,
|
|
.driver = {
|
|
#ifndef CONFIG_HAS_EARLYSUSPEND
|
|
.pm = &ssp_pm_ops,
|
|
#endif
|
|
.owner = THIS_MODULE,
|
|
.name = "ssp",
|
|
.of_match_table = ssp_match_table
|
|
},
|
|
};
|
|
|
|
module_i2c_driver(ssp_driver);
|
|
MODULE_DESCRIPTION("ssp driver");
|
|
MODULE_AUTHOR("Samsung Electronics");
|
|
MODULE_LICENSE("GPL");
|