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1015 lines
35 KiB
1015 lines
35 KiB
/*
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* @file mstdrv.c
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* @brief MST drv Support
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* Copyright (c) 2015, Samsung Electronics Corporation. 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 version 2 and
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* only version 2 as published by the Free Software Foundation.
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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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#include <linux/device.h>
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#include <linux/kernel.h>
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#include <linux/kobject.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/syscalls.h>
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#include <linux/gpio.h>
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#include <linux/of_gpio.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/consumer.h>
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#include <linux/wakelock.h>
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#include <linux/delay.h>
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#include <linux/qseecom.h>
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#include <linux/pinctrl/consumer.h>
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#include <linux/err.h>
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#include "mstdrv.h"
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#include <linux/power_supply.h>
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#include <linux/msm_pcie.h>
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#include <linux/threads.h>
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#include <linux/percpu-defs.h>
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#include <linux/cpu.h>
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#include <linux/cpumask.h>
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#include <linux/cpufreq.h>
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#include <linux/sched.h>
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#include <linux/sched/core_ctl.h>
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#include <linux/workqueue.h>
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#include <linux/msm-bus.h>
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#if defined(CONFIG_MST_LPM_DISABLE)
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#include <linux/pm_qos.h>
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#endif
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/* defines */
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#define ON 1 // On state
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#define OFF 0 // Off state
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#define TRACK1 1 // Track1 data
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#define TRACK2 2 // Track2 data
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#define CMD_MST_LDO_OFF '0' // MST LDO off
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#define CMD_MST_LDO_ON '1' // MST LDO on
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#define CMD_SEND_TRACK1_DATA '2' // Send track1 test data
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#define CMD_SEND_TRACK2_DATA '3' // send track2 test data
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#define CMD_HW_RELIABILITY_TEST_START '4' // start HW reliability test
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#define CMD_HW_RELIABILITY_TEST_STOP '5' // stop HW reliability test
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#define ERROR_VALUE -1 // Error value
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#define TEST_RESULT_LEN 256 // result array length
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#define SVC_MST_ID 0x000A0000 // need to check ID
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#define MST_CREATE_CMD(x) (SVC_MST_ID | x) // Create MST commands
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#define MST_TA "mst"
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#if defined(CONFIG_MFC_CHARGER)
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#define MST_MODE_ON 1 // ON Message to MFC ic
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#define MST_MODE_OFF 0 // OFF Message to MFC ic
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#define psy_do_property(name, function, property, value) \
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{ \
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struct power_supply *psy; \
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int ret; \
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psy = get_power_supply_by_name((name)); \
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if (!psy) { \
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pr_err("%s: Fail to "#function" psy (%s)\n", \
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__func__, (name)); \
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value.intval = 0; \
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} else { \
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if (psy->desc->function##_property != NULL) { \
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ret = psy->desc->function##_property(psy, (property), &(value)); \
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if (ret < 0) { \
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pr_err("%s: Fail to %s "#function" (%d=>%d)\n", \
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__func__, name, (property), ret); \
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value.intval = 0; \
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} \
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} \
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} \
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}
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#endif
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/* enum definitions */
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typedef enum {
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MST_CMD_TRACK1_TEST = MST_CREATE_CMD(0x00000000),
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MST_CMD_TRACK2_TEST = MST_CREATE_CMD(0x00000001),
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MST_CMD_UNKNOWN = MST_CREATE_CMD(0x7FFFFFFF)
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} mst_cmd_type;
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/* struct definitions */
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struct qseecom_handle {
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void *dev; /* in/out */
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unsigned char *sbuf; /* in/out */
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uint32_t sbuf_len; /* in/out */
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};
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typedef struct mst_req_s {
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mst_cmd_type cmd_id;
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uint32_t data;
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} __attribute__((packed)) mst_req_t;
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typedef struct mst_rsp_s {
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uint32_t data;
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uint32_t status;
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} __attribute__((packed)) mst_rsp_t;
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static struct msm_bus_paths ss_mst_usecases[] = {
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{
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.vectors = (struct msm_bus_vectors[]) {
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{
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.src = 1,
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.dst = 512,
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.ab = 0,
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.ib = 0,
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},
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},
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.num_paths = 1,
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},
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{
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.vectors = (struct msm_bus_vectors[]) {
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{
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.src = 1,
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.dst = 512,
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.ab = 4068000000,
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.ib = 4068000000,
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},
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},
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.num_paths = 1,
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},
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};
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static struct msm_bus_scale_pdata ss_mst_bus_client_pdata = {
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.usecase = ss_mst_usecases,
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.num_usecases = ARRAY_SIZE(ss_mst_usecases),
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.name = "ss_mst",
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};
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#if defined(CONFIG_MST_LPM_DISABLE)
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static struct pm_qos_request mst_pm_qos_request;
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uint32_t mst_lpm_tag;
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#endif
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uint32_t ss_mst_bus_hdl;
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/* extern function declarations */
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extern int qseecom_start_app(struct qseecom_handle **handle, char *app_name,
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uint32_t size);
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extern int qseecom_shutdown_app(struct qseecom_handle **handle);
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extern int qseecom_send_command(struct qseecom_handle *handle, void *send_buf,
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uint32_t sbuf_len, void *resp_buf,
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uint32_t rbuf_len);
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/* function declarations */
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static ssize_t show_mst_drv(struct device *dev,
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struct device_attribute *attr, char *buf);
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static ssize_t store_mst_drv(struct device *dev,
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struct device_attribute *attr, const char *buf,
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size_t count);
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static int mst_ldo_device_probe(struct platform_device *pdev);
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static inline struct power_supply *get_power_supply_by_name(char *name)
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{
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if (!name)
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return (struct power_supply *)NULL;
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else
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return power_supply_get_by_name(name);
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}
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static void of_mst_hw_onoff(bool on);
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static int boost_enable(void);
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static int boost_disable(void);
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/* global variables */
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#if defined(CONFIG_MST_REGULATOR)
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struct regulator *regulator3_0;
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#else
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static int mst_pwr_en; // MST_PWR_EN pin
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#endif
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#if defined(CONFIG_MST_SUPPORT_GPIO)
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static int mst_support_check;
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#endif
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static int escape_loop = 1; // for HW reliability test
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static struct class *mst_drv_class; // mst_drv class
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struct device *mst_drv_dev; // mst_drv driver handle
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static struct wake_lock mst_wakelock; // wake_lock used for HW reliability test
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static DEVICE_ATTR(transmit, 0770, show_mst_drv, store_mst_drv); // define device attribute
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static struct qseecom_handle *qhandle;
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static int nfc_state;
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#if defined(CONFIG_MFC_CHARGER)
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static int wpc_det;
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#endif
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/* cpu freq control variables */
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struct workqueue_struct *cluster_freq_ctrl_wq;
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struct delayed_work dwork;
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DEFINE_MUTEX(mst_mutex);
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DEFINE_MUTEX(transmit_mutex);
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/* device driver structures */
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static struct of_device_id mst_match_ldo_table[] = {
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{.compatible = "sec-mst", },
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{ },
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};
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static int mst_ldo_device_suspend(struct platform_device *dev, pm_message_t state)
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{
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uint8_t is_mst_pwr_on;
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#if defined(CONFIG_MST_REGULATOR)
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if (regulator3_0) {
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is_mst_pwr_on = regulator_is_enabled(regulator3_0);
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if (is_mst_pwr_on > 0) {
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pr_info("%s: mst regulator is on, is_mst_pwr_on = %d\n", __func__, is_mst_pwr_on);
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pr_info("%s: mst regulator off\n", __func__);
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of_mst_hw_onoff(OFF);
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} else {
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pr_info("%s: mst regulator is off, is_mst_pwr_on = %d\n", __func__, is_mst_pwr_on);
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}
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}
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#else
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is_mst_pwr_on = gpio_get_value(mst_pwr_en);
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if (is_mst_pwr_on == 1) {
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pr_info("%s: mst power is on, is_mst_pwr_on = %d\n", __func__, is_mst_pwr_on);
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pr_info("%s: mst power off\n", __func__);
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of_mst_hw_onoff(OFF);
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} else {
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pr_info("%s: mst power is off, is_mst_pwr_on = %d\n", __func__, is_mst_pwr_on);
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}
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#endif
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return 0;
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}
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static struct platform_driver sec_mst_ldo_driver = {
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.driver = {
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.owner = THIS_MODULE,
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.name = "mstldo",
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.of_match_table = mst_match_ldo_table,
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},
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.probe = mst_ldo_device_probe,
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.suspend = mst_ldo_device_suspend,
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};
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EXPORT_SYMBOL_GPL(mst_drv_dev);
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/**
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* boost_enable - set all CPUs freq upto Max
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* boost_disable - set all CPUs freq back to Normal
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*/
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static void mst_cluster_freq_ctrl_worker(struct work_struct *work)
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{
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uint8_t is_mst_pwr_on;
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#if defined(CONFIG_MST_REGULATOR)
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if (regulator3_0) {
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is_mst_pwr_on = regulator_is_enabled(regulator3_0);
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if (is_mst_pwr_on > 0) {
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pr_info("%s: mst regulator is on, is_mst_pwr_on = %d\n", __func__, is_mst_pwr_on);
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pr_info("%s: mst regulator off\n", __func__);
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of_mst_hw_onoff(OFF);
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} else {
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pr_info("%s: mst regulator is off, is_mst_pwr_on = %d\n", __func__, is_mst_pwr_on);
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}
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}
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#else
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is_mst_pwr_on = gpio_get_value(mst_pwr_en);
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if (is_mst_pwr_on == 1) {
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pr_info("%s: mst power is on, is_mst_pwr_on = %d\n", __func__, is_mst_pwr_on);
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pr_info("%s: mst power off\n", __func__);
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of_mst_hw_onoff(OFF);
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} else {
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pr_info("%s: mst power is off, is_mst_pwr_on = %d\n", __func__, is_mst_pwr_on);
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}
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#endif
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return;
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}
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static int boost_enable(void)
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{
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pr_info("boost_enable: bump up snoc clock request\n");
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if (0 == ss_mst_bus_hdl) {
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ss_mst_bus_hdl =
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msm_bus_scale_register_client(&ss_mst_bus_client_pdata);
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if (ss_mst_bus_hdl) {
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if (msm_bus_scale_client_update_request(ss_mst_bus_hdl, 1)) {
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pr_err("[SS_MST] fail to update request!\n");
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WARN_ON(1);
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msm_bus_scale_unregister_client(ss_mst_bus_hdl);
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ss_mst_bus_hdl = 0;
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}
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} else {
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pr_err("[SS_MST] fail to register snoc clock config! ss_mst_bus_hdl = %d\n", ss_mst_bus_hdl);
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}
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}
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return ss_mst_bus_hdl;
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}
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static int boost_disable(void)
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{
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pr_info("boost_disable: bump up snoc clock remove\n");
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if (ss_mst_bus_hdl) {
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if (msm_bus_scale_client_update_request(ss_mst_bus_hdl, 0))
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WARN_ON(1);
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msm_bus_scale_unregister_client(ss_mst_bus_hdl);
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ss_mst_bus_hdl = 0;
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} else {
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pr_err("[SS_MST] fail to unregister snoc clock config! ss_mst_bus_hdl = %d\n", ss_mst_bus_hdl);
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}
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return ss_mst_bus_hdl;
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}
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/**
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* mst_ctrl_of_mst_hw_onoff - function to disable/enable MST whenever samsung pay app wants
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* @on: on/off value
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*/
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extern void mst_ctrl_of_mst_hw_onoff(bool on)
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{
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#if defined(CONFIG_MFC_CHARGER)
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union power_supply_propval value; /* power_supply prop */
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#endif
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int ret = 0;
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#if defined(CONFIG_MST_SUPPORT_GPIO)
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uint8_t is_mst_support = 0;
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is_mst_support = gpio_get_value(mst_support_check);
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if (is_mst_support == 0) {
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printk(KERN_ERR "MST not supported, no need to mst_ctrl control, %d\n", is_mst_support);
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return;
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}
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#endif
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printk("[MST] mst-drv : mst_ctrl : mst_power_onoff : %d\n", on);
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if (on) {
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printk("[MST] %s : nfc_status gets back to 0(unlock)\n", __func__);
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nfc_state = 0;
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} else {
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#if defined(CONFIG_MST_REGULATOR)
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if (regulator3_0) {
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if (regulator_is_enabled(regulator3_0)) {
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regulator_disable(regulator3_0);
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printk("%s : regulator 3.0 is disabled\n", __func__);
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}
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}
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#else
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gpio_set_value(mst_pwr_en, 0);
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printk("%s : mst_pwr_en gets the LOW\n", __func__);
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#endif
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usleep_range(800, 1000);
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printk("%s : msleep(1)\n", __func__);
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#if defined(CONFIG_MFC_CHARGER)
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value.intval = MST_MODE_OFF;
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psy_do_property("mfc-charger", set, POWER_SUPPLY_PROP_TECHNOLOGY, value);
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printk("%s : MST_MODE_OFF notify : %d\n", __func__, value.intval);
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#endif
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/* Boost Disable */
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printk("%s : boost disable to back to Normal", __func__);
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mutex_lock(&mst_mutex);
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ret = boost_disable();
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if (ret)
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printk("%s : boost disable is failed, ret = %d\n", __func__, ret);
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#if defined(CONFIG_MST_LPM_CONTROL)
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/* PCIe LPM Enable */
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sec_pcie_l1ss_enable(L1SS_MST);
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#endif
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#if defined(CONFIG_MST_LPM_DISABLE)
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/* CPU LPM Enable */
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if (mst_lpm_tag) {
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printk("%s : pm_qos remove\n", __func__);
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pm_qos_remove_request(&mst_pm_qos_request);
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printk("%s : core online lock disable\n", __func__);
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core_ctl_set_boost(false);
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mst_lpm_tag = 0;
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}
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#endif
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mutex_unlock(&mst_mutex);
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printk("%s : nfc_status gets 1(lock)\n", __func__);
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nfc_state = 1;
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}
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}
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/**
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* of_mst_hw_onoff - Enable/Disable MST LDO GPIO pin (or Regulator)
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* @on: on/off value
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*/
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static void of_mst_hw_onoff(bool on)
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{
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#if defined(CONFIG_MFC_CHARGER)
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union power_supply_propval value; /* power_supply prop */
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int retry_cnt = 8;
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#endif
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int ret;
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printk("[MST] mst-drv : mst_power_onoff : %d\n", on);
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#if defined(CONFIG_MST_REGULATOR)
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if (regulator3_0 == NULL) {
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regulator3_0 = regulator_get(NULL, "pm6150l_l7");
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printk(KERN_ERR "%s: regulator_get retry\n", __func__);
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}
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#endif
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if (nfc_state == 1) {
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printk("[MST] %s : nfc_state is on!!!\n", __func__);
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return;
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}
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if (on) {
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#if defined(CONFIG_MFC_CHARGER)
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printk("%s : MST_MODE_ON notify start\n", __func__);
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value.intval = MST_MODE_ON;
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psy_do_property("mfc-charger", set, POWER_SUPPLY_PROP_TECHNOLOGY, value);
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printk("%s : MST_MODE_ON notified : %d\n", __func__, value.intval);
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#endif
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#if defined(CONFIG_MST_REGULATOR)
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if (regulator3_0) {
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regulator_enable(regulator3_0);
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printk("%s : regulator 3.0 is enabled\n", __func__);
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}
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#else
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gpio_set_value(mst_pwr_en, 1);
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printk("%s : mst_pwr_en gets the HIGH\n", __func__);
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#endif
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/* Boost Enable */
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cancel_delayed_work_sync(&dwork);
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printk("%s : boost enable for performacne", __func__);
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mutex_lock(&mst_mutex);
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ret = boost_enable();
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if (!ret)
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printk("%s : boost enable is failed, ret = %d\n", __func__, ret);
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queue_delayed_work(cluster_freq_ctrl_wq, &dwork, 90 * HZ);
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#if defined(CONFIG_MST_LPM_CONTROL)
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/* PCIe LPM Disable */
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sec_pcie_l1ss_disable(L1SS_MST);
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#endif
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#if defined(CONFIG_MST_LPM_DISABLE)
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/* CPU LPM Disable */
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if (mst_lpm_tag == 0) {
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printk("%s : pm_qos add\n", __func__);
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pm_qos_add_request(&mst_pm_qos_request, PM_QOS_CPU_DMA_LATENCY, PM_QOS_DEFAULT_VALUE);
|
|
pm_qos_update_request(&mst_pm_qos_request, 1);
|
|
printk("%s : core online lock enable\n", __func__);
|
|
core_ctl_set_boost(true);
|
|
mst_lpm_tag = 1;
|
|
}
|
|
#endif
|
|
|
|
mutex_unlock(&mst_mutex);
|
|
|
|
mdelay(40);
|
|
|
|
#if defined(CONFIG_MFC_CHARGER)
|
|
while (--retry_cnt) {
|
|
psy_do_property("mfc-charger", get, POWER_SUPPLY_PROP_TECHNOLOGY, value);
|
|
//printk("%s : check mst mode status : %d\n", __func__, value.intval);
|
|
if (value.intval == 0x02) {
|
|
printk("%s : mst mode set!!! : %d\n", __func__, value.intval);
|
|
retry_cnt = 1;
|
|
break;
|
|
}
|
|
usleep_range(3600, 4000);
|
|
}
|
|
|
|
if (!retry_cnt) {
|
|
printk("%s : timeout !!! : %d\n", __func__, value.intval);
|
|
}
|
|
#endif
|
|
|
|
} else {
|
|
#if defined(CONFIG_MST_REGULATOR)
|
|
if (regulator3_0) {
|
|
regulator_disable(regulator3_0);
|
|
printk("%s : regulator 3.0 is disabled\n", __func__);
|
|
}
|
|
#else
|
|
gpio_set_value(mst_pwr_en, 0);
|
|
printk("%s : mst_pwr_en gets the LOW\n", __func__);
|
|
#endif
|
|
|
|
usleep_range(800, 1000);
|
|
printk("%s : msleep(1)\n", __func__);
|
|
|
|
#if defined(CONFIG_MFC_CHARGER)
|
|
value.intval = MST_MODE_OFF;
|
|
psy_do_property("mfc-charger", set, POWER_SUPPLY_PROP_TECHNOLOGY, value);
|
|
printk("%s : MST_MODE_OFF notify : %d\n", __func__, value.intval);
|
|
#endif
|
|
|
|
/* Boost Disable */
|
|
printk("%s : boost disable to back to Normal", __func__);
|
|
mutex_lock(&mst_mutex);
|
|
ret = boost_disable();
|
|
if (ret)
|
|
printk("%s : boost disable is failed, ret = %d\n", __func__, ret);
|
|
|
|
#if defined(CONFIG_MST_LPM_CONTROL)
|
|
/* PCIe LPM Enable */
|
|
sec_pcie_l1ss_enable(L1SS_MST);
|
|
#endif
|
|
|
|
#if defined(CONFIG_MST_LPM_DISABLE)
|
|
/* CPU LPM Enable */
|
|
if (mst_lpm_tag) {
|
|
printk("%s : pm_qos remove\n", __func__);
|
|
pm_qos_remove_request(&mst_pm_qos_request);
|
|
printk("%s : core online lock disable\n", __func__);
|
|
core_ctl_set_boost(false);
|
|
mst_lpm_tag = 0;
|
|
}
|
|
#endif
|
|
mutex_unlock(&mst_mutex);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* transmit_mst_data - Transmit test track data
|
|
* @track: 1:track1, 2:track2
|
|
*/
|
|
static int transmit_mst_data(int track)
|
|
{
|
|
int ret = 0;
|
|
int qsee_ret = 0;
|
|
char app_name[MAX_APP_NAME_SIZE];
|
|
mst_req_t *kreq = NULL;
|
|
mst_rsp_t *krsp = NULL;
|
|
int req_len = 0, rsp_len = 0;
|
|
// Core Affinity
|
|
struct cpumask cpumask;
|
|
uint32_t cpu;
|
|
|
|
if (!mutex_trylock(&transmit_mutex)) {
|
|
printk("[MST] failed to acquire transmit_mutex!\n");
|
|
return ERROR_VALUE;
|
|
}
|
|
snprintf(app_name, MAX_APP_NAME_SIZE, "%s", MST_TA);
|
|
if (NULL == qhandle) {
|
|
/* start the mst tzapp only when it is not loaded. */
|
|
qsee_ret = qseecom_start_app(&qhandle, app_name, 1024);
|
|
}
|
|
|
|
if (NULL == qhandle) {
|
|
/* qhandle is still NULL. It seems we couldn't start mst tzapp. */
|
|
printk("[MST] cannot get tzapp handle from kernel.\n");
|
|
ret = ERROR_VALUE;
|
|
goto exit; /* leave the function now. */
|
|
}
|
|
|
|
kreq = (struct mst_req_s *)qhandle->sbuf;
|
|
|
|
switch (track) {
|
|
case TRACK1:
|
|
kreq->cmd_id = MST_CMD_TRACK1_TEST;
|
|
break;
|
|
|
|
case TRACK2:
|
|
kreq->cmd_id = MST_CMD_TRACK2_TEST;
|
|
break;
|
|
|
|
default:
|
|
ret = ERROR_VALUE;
|
|
goto exit;
|
|
break;
|
|
}
|
|
|
|
req_len = sizeof(mst_req_t);
|
|
krsp = (struct mst_rsp_s *)(qhandle->sbuf + req_len);
|
|
rsp_len = sizeof(mst_rsp_t);
|
|
|
|
// Core Affinity
|
|
printk("[MST] sched_setaffinity not to run on core0");
|
|
if (num_online_cpus() < 2) {
|
|
cpumask_setall(&cpumask);
|
|
for_each_cpu(cpu, &cpumask) {
|
|
if (cpu == 0)
|
|
continue;
|
|
cpu_up(cpu);
|
|
break;
|
|
}
|
|
}
|
|
cpumask_clear(&cpumask);
|
|
cpumask_copy(&cpumask, cpu_online_mask);
|
|
cpumask_clear_cpu(0, &cpumask);
|
|
sched_setaffinity(0, &cpumask);
|
|
|
|
printk("[MST] cmd_id = %x, req_len = %d, rsp_len = %d\n", kreq->cmd_id, req_len, rsp_len);
|
|
|
|
trace_printk("tracing mark write: MST transmission Start\n");
|
|
qsee_ret = qseecom_send_command(qhandle, kreq, req_len, krsp, rsp_len);
|
|
trace_printk("tracing mark write: MST transmission End\n");
|
|
|
|
if (qsee_ret) {
|
|
ret = ERROR_VALUE;
|
|
printk("[MST] failed to send cmd to qseecom; qsee_ret = %d.\n", qsee_ret);
|
|
}
|
|
|
|
if (krsp->status) {
|
|
ret = ERROR_VALUE;
|
|
printk("[MST] generate sample track data from TZ -- failed. %d\n", krsp->status);
|
|
}
|
|
|
|
printk("[MST] shutting down the tzapp.\n");
|
|
qsee_ret = qseecom_shutdown_app(&qhandle);
|
|
if (qsee_ret) {
|
|
printk("[MST] failed to shut down the tzapp.\n");
|
|
} else {
|
|
qhandle = NULL;
|
|
}
|
|
exit:
|
|
mutex_unlock(&transmit_mutex);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* show_mst_drv - device attribute show sysfs operation
|
|
*/
|
|
static ssize_t show_mst_drv(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
if (!dev)
|
|
return -ENODEV;
|
|
|
|
// todo
|
|
if (escape_loop == 0) {
|
|
return sprintf(buf, "%s\n", "activating");
|
|
} else {
|
|
return sprintf(buf, "%s\n", "waiting");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* store_mst_drv - device attribute store sysfs operation
|
|
*/
|
|
static ssize_t store_mst_drv(struct device *dev,
|
|
struct device_attribute *attr, const char *buf,
|
|
size_t count)
|
|
{
|
|
char test_result[TEST_RESULT_LEN] = { 0, };
|
|
#if defined(CONFIG_MFC_CHARGER)
|
|
struct device_node *np;
|
|
enum of_gpio_flags irq_gpio_flags;
|
|
#endif
|
|
|
|
sscanf(buf, "%20s\n", test_result);
|
|
|
|
#if defined(CONFIG_MFC_CHARGER)
|
|
if (wpc_det < 0) {
|
|
np = of_find_node_by_name(NULL, "battery");
|
|
if (!np) {
|
|
pr_err("%s np NULL\n", __func__);
|
|
} else {
|
|
/* wpc_det */
|
|
wpc_det = of_get_named_gpio_flags(np, "battery,wpc_det", 0, &irq_gpio_flags);
|
|
if (wpc_det < 0) {
|
|
dev_err(dev, "%s : can't get wpc_det = %d\n", __FUNCTION__, wpc_det);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (wpc_det && (gpio_get_value(wpc_det) == 1)) {
|
|
printk("[MST] Wireless charging is ongoing, do not proceed MST work\n");
|
|
return count;
|
|
}
|
|
#endif
|
|
|
|
switch (test_result[0]) {
|
|
|
|
case CMD_MST_LDO_OFF:
|
|
of_mst_hw_onoff(OFF);
|
|
break;
|
|
|
|
case CMD_MST_LDO_ON:
|
|
of_mst_hw_onoff(ON);
|
|
break;
|
|
|
|
case CMD_SEND_TRACK1_DATA:
|
|
#if !defined(CONFIG_MFC_CHARGER)
|
|
of_mst_hw_onoff(ON);
|
|
#endif
|
|
if (transmit_mst_data(TRACK1))
|
|
printk("[MST] Send track1 data --> failed\n");
|
|
else
|
|
printk("[MST] Send track1 data --> successful\n");
|
|
#if !defined(CONFIG_MFC_CHARGER)
|
|
of_mst_hw_onoff(OFF);
|
|
#endif
|
|
break;
|
|
|
|
case CMD_SEND_TRACK2_DATA:
|
|
#if !defined(CONFIG_MFC_CHARGER)
|
|
of_mst_hw_onoff(ON);
|
|
#endif
|
|
if (transmit_mst_data(TRACK2))
|
|
printk("[MST] Send track2 data --> failed\n");
|
|
else
|
|
printk("[MST] Send track2 data --> successful\n");
|
|
#if !defined(CONFIG_MFC_CHARGER)
|
|
of_mst_hw_onoff(OFF);
|
|
#endif
|
|
break;
|
|
|
|
case CMD_HW_RELIABILITY_TEST_START:
|
|
if (escape_loop) {
|
|
wake_lock_init(&mst_wakelock, WAKE_LOCK_SUSPEND, "mst_wakelock");
|
|
wake_lock(&mst_wakelock);
|
|
}
|
|
escape_loop = 0;
|
|
while (1) {
|
|
if (escape_loop == 1)
|
|
break;
|
|
#if !defined(CONFIG_MFC_CHARGER)
|
|
of_mst_hw_onoff(ON);
|
|
#endif
|
|
mdelay(10);
|
|
if (transmit_mst_data(TRACK2)) {
|
|
printk("[MST] Send track2 data --> failed\n");
|
|
break;
|
|
}
|
|
printk("[MST] Send track2 data --> successful\n");
|
|
#if !defined(CONFIG_MFC_CHARGER)
|
|
of_mst_hw_onoff(OFF);
|
|
#endif
|
|
mdelay(1000);
|
|
}
|
|
break;
|
|
|
|
case CMD_HW_RELIABILITY_TEST_STOP:
|
|
if (!escape_loop)
|
|
wake_lock_destroy(&mst_wakelock);
|
|
escape_loop = 1;
|
|
printk("[MST] MST escape_loop value = 1\n");
|
|
break;
|
|
|
|
default:
|
|
printk(KERN_ERR "[MST] MST invalid value : %s\n", test_result);
|
|
break;
|
|
}
|
|
return count;
|
|
}
|
|
|
|
/**
|
|
* sec_mst_gpio_init - Initialize GPIO pins used by driver
|
|
* @dev: driver handle
|
|
*/
|
|
static int sec_mst_gpio_init(struct device *dev)
|
|
{
|
|
#if defined(CONFIG_MFC_CHARGER)
|
|
struct device_node *np;
|
|
enum of_gpio_flags irq_gpio_flags;
|
|
|
|
/* get wireless chraging check gpio */
|
|
np = of_find_node_by_name(NULL, "battery");
|
|
if (!np) {
|
|
pr_err("%s np NULL\n", __func__);
|
|
} else {
|
|
/* wpc_det */
|
|
wpc_det = of_get_named_gpio_flags(np, "battery,wpc_det", 0, &irq_gpio_flags);
|
|
if (wpc_det < 0) {
|
|
dev_err(dev, "%s : can't get wpc_det = %d\n", __FUNCTION__, wpc_det);
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(CONFIG_MST_REGULATOR)
|
|
regulator3_0 = regulator_get(NULL, "pm6150l_l7");
|
|
if (regulator3_0 == NULL) {
|
|
printk("%s : regulator3_0 is invalid(NULL)\n", __func__);
|
|
//return;
|
|
}
|
|
#else
|
|
mst_pwr_en =
|
|
of_get_named_gpio(dev->of_node, "sec-mst,mst-pwr-gpio", OFF);
|
|
|
|
/* check if gpio pin is inited */
|
|
if (mst_pwr_en < 0) {
|
|
printk("%s : Cannot create the gpio\n", __func__);
|
|
//return 1;
|
|
}
|
|
|
|
/* gpio request */
|
|
if (gpio_request(mst_pwr_en, "sec-mst,mst-pwr-gpio")) {
|
|
printk("%s : failed to get pwr gpio : %d\n", __func__, mst_pwr_en);
|
|
}
|
|
|
|
/* set gpio direction */
|
|
if (mst_pwr_en > 0) {
|
|
gpio_direction_output(mst_pwr_en, OFF);
|
|
printk("%s : Send Output\n", __func__);
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
#if defined(CONFIG_MFC_CHARGER)
|
|
static ssize_t show_mfc(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
if (!dev)
|
|
return -ENODEV;
|
|
|
|
return sprintf(buf, "%s\n", "mfc_charger");
|
|
}
|
|
|
|
static ssize_t store_mfc(struct device *dev,
|
|
struct device_attribute *attr, const char *buf,
|
|
size_t count)
|
|
{
|
|
return count;
|
|
}
|
|
|
|
static DEVICE_ATTR(mfc, 0770, show_mfc, store_mfc);
|
|
#endif
|
|
|
|
/* MST support node */
|
|
static ssize_t show_support(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
#if defined(CONFIG_MST_SUPPORT_GPIO)
|
|
uint8_t is_mst_support = 0;
|
|
#endif
|
|
|
|
if (!dev)
|
|
return -ENODEV;
|
|
|
|
#if defined(CONFIG_MST_SUPPORT_GPIO)
|
|
is_mst_support = gpio_get_value(mst_support_check);
|
|
if (is_mst_support == 1) {
|
|
printk(KERN_ERR "MST_DRV]]] This device supports MST, %d\n", is_mst_support);
|
|
return sprintf(buf, "%d\n", 1);
|
|
} else {
|
|
printk(KERN_ERR "MST_DRV]]] This device doesn't supports MST, %d\n", is_mst_support);
|
|
return sprintf(buf, "%d\n", 0);
|
|
}
|
|
#else
|
|
printk("%s no support gpio, bug MST_LDO is enabled, supports MST\n", __func__);
|
|
return sprintf(buf, "%d\n", 1);
|
|
#endif
|
|
}
|
|
|
|
static ssize_t store_support(struct device *dev,
|
|
struct device_attribute *attr, const char *buf,
|
|
size_t count)
|
|
{
|
|
return count;
|
|
}
|
|
static DEVICE_ATTR(support, 0444, show_support, store_support);
|
|
|
|
/**
|
|
* mst_ldo_device_probe - Driver probe function
|
|
*/
|
|
static int mst_ldo_device_probe(struct platform_device *pdev)
|
|
{
|
|
int retval = 0;
|
|
#if defined(CONFIG_MST_SUPPORT_GPIO)
|
|
struct device *dev = &pdev->dev;
|
|
uint8_t is_mst_support = 0;
|
|
#endif
|
|
|
|
printk("[MST] %s init start\n", __func__);
|
|
|
|
#if defined(CONFIG_MST_SUPPORT_GPIO)
|
|
/* MST support/non-support node check gpio */
|
|
mst_support_check = of_get_named_gpio(dev->of_node, "sec-mst,mst-support-gpio", 0);
|
|
printk("[MST] mst_support_check Value : %d\n", mst_support_check);
|
|
if (mst_support_check < 0) {
|
|
printk(KERN_ERR "%s : Cannot create the gpio\n", __func__);
|
|
return -1;
|
|
}
|
|
printk(KERN_ERR "MST_DRV]]] gpio support_check inited\n");
|
|
|
|
is_mst_support = gpio_get_value(mst_support_check);
|
|
if (is_mst_support == 1) {
|
|
printk(KERN_ERR "MST_DRV]]] This device supports MST, %d\n", is_mst_support);
|
|
} else {
|
|
printk(KERN_ERR "MST_DRV]]] This device doesn't supports MST, %d\n", is_mst_support);
|
|
|
|
mst_drv_class = class_create(THIS_MODULE, "mstldo");
|
|
if (IS_ERR(mst_drv_class)) {
|
|
retval = PTR_ERR(mst_drv_class);
|
|
printk(KERN_ERR "[MST] %s: driver initialization failed, retval : %d\n", __FILE__, retval);
|
|
goto done;
|
|
}
|
|
|
|
mst_drv_dev = device_create(mst_drv_class,
|
|
NULL /* parent */ , 0 /* dev_t */ ,
|
|
NULL /* drvdata */ ,
|
|
MST_DRV_DEV);
|
|
if (IS_ERR(mst_drv_dev)) {
|
|
retval = PTR_ERR(mst_drv_dev);
|
|
kfree(mst_drv_dev);
|
|
device_destroy(mst_drv_class, 0);
|
|
printk(KERN_ERR "[MST] %s: driver initialization failed, retval : %d\n", __FILE__, retval);
|
|
goto done;
|
|
}
|
|
|
|
retval = device_create_file(mst_drv_dev, &dev_attr_support);
|
|
if (retval) {
|
|
kfree(mst_drv_dev);
|
|
device_destroy(mst_drv_class, 0);
|
|
printk(KERN_ERR "[MST] %s: (support)driver initialization failed, retval : %d\n", __FILE__, retval);
|
|
goto done;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
#endif
|
|
|
|
if (sec_mst_gpio_init(&pdev->dev)) {
|
|
retval = ERROR_VALUE;
|
|
printk(KERN_ERR "[MST] %s: driver initialization failed, retval : %d\n", __FILE__, retval);
|
|
goto done;
|
|
}
|
|
|
|
mst_drv_class = class_create(THIS_MODULE, "mstldo");
|
|
if (IS_ERR(mst_drv_class)) {
|
|
retval = PTR_ERR(mst_drv_class);
|
|
printk(KERN_ERR "[MST] %s: driver initialization failed, retval : %d\n", __FILE__, retval);
|
|
goto done;
|
|
}
|
|
|
|
mst_drv_dev = device_create(mst_drv_class,
|
|
NULL /* parent */ , 0 /* dev_t */ ,
|
|
NULL /* drvdata */ ,
|
|
MST_DRV_DEV);
|
|
if (IS_ERR(mst_drv_dev)) {
|
|
retval = PTR_ERR(mst_drv_dev);
|
|
kfree(mst_drv_dev);
|
|
device_destroy(mst_drv_class, 0);
|
|
printk(KERN_ERR "[MST] %s: driver initialization failed, retval : %d\n", __FILE__, retval);
|
|
goto done;
|
|
}
|
|
|
|
/* register this mst device with the driver core */
|
|
retval = device_create_file(mst_drv_dev, &dev_attr_transmit);
|
|
if (retval) {
|
|
kfree(mst_drv_dev);
|
|
device_destroy(mst_drv_class, 0);
|
|
printk(KERN_ERR "[MST] %s: (transmit)driver initialization failed, retval : %d\n", __FILE__, retval);
|
|
goto done;
|
|
}
|
|
|
|
retval = device_create_file(mst_drv_dev, &dev_attr_support);
|
|
if (retval) {
|
|
kfree(mst_drv_dev);
|
|
device_destroy(mst_drv_class, 0);
|
|
printk(KERN_ERR "[MST] %s: (support)driver initialization failed, retval : %d\n", __FILE__, retval);
|
|
goto done;
|
|
}
|
|
|
|
#if defined(CONFIG_MFC_CHARGER)
|
|
retval = device_create_file(mst_drv_dev, &dev_attr_mfc);
|
|
if (retval) {
|
|
kfree(mst_drv_dev);
|
|
device_destroy(mst_drv_class, 0);
|
|
printk(KERN_ERR "[MST] %s: (mfc)driver initialization failed, retval : %d\n", __FILE__, retval);
|
|
goto done;
|
|
}
|
|
#endif
|
|
|
|
printk(KERN_DEBUG "[MST] MST drv driver (%s) is initialized.\n", MST_DRV_DEV);
|
|
|
|
done:
|
|
return retval;
|
|
}
|
|
|
|
/**
|
|
* mst_drv_init - Driver init function
|
|
*/
|
|
static int __init mst_drv_init(void)
|
|
{
|
|
int ret = 0;
|
|
printk(KERN_ERR "[MST] %s\n", __func__);
|
|
ret = platform_driver_register(&sec_mst_ldo_driver);
|
|
printk(KERN_ERR "[MST] MST_LDO_DRV]]] init , ret val : %d\n", ret);
|
|
|
|
cluster_freq_ctrl_wq =
|
|
create_singlethread_workqueue("mst_cluster_freq_ctrl_wq");
|
|
INIT_DELAYED_WORK(&dwork, mst_cluster_freq_ctrl_worker);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* mst_drv_exit - Driver exit function
|
|
*/
|
|
static void __exit mst_drv_exit(void)
|
|
{
|
|
class_destroy(mst_drv_class);
|
|
#if defined(CONFIG_MST_REGULATOR)
|
|
if (regulator3_0)
|
|
regulator_put(regulator3_0);
|
|
#endif
|
|
printk(KERN_ALERT "[MST] %s\n", __func__);
|
|
}
|
|
|
|
MODULE_AUTHOR("JASON KANG, j_seok.kang@samsung.com");
|
|
MODULE_DESCRIPTION("MST drv driver");
|
|
MODULE_VERSION("0.1");
|
|
|
|
late_initcall(mst_drv_init);
|
|
module_exit(mst_drv_exit);
|
|
|