/* s62x.c - s62x compass driver * * This software is licensed under the terms of the GNU General Public * License version 2, as published by the Free Software Foundation, and * may be copied, distributed, and modified under those terms. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "mag.h" /*----------------------------------------------------------------------------*/ /****** Begin of Customization ****/ /* #define USE_ALTERNATE_ADDRESS //can change i2c address when the first(0x0c<<1) conflig whit other devices */ /* #define FORCE_KERNEL2X_STYLE //auto fit android version(cause the different i2c flow) */ /****** End of Customization ******/ #define PLATFORM_DRIVER_NAME "msensor" /* The following items are for internal testing only. -USE_ALTERNATE_ADDRESS: (--)default (+*)test S +USE_ALTERNATE_ADDRESS: (--)default (+-)test S (-+)test A */ /* #define _MAGIC_KPT_COMMAND */ /* #define _FORCE_PROBE_ERROR */ /*----------------------------------------------------------------------------*/ #define S62X_I2C_ADDR1 (0x0e) #define S62X_I2C_ADDR2 (0x1e) #ifdef USE_ALTERNATE_ADDRESS #define S62X_I2C_ADDRESS S62X_I2C_ADDR2 #else #define S62X_I2C_ADDRESS S62X_I2C_ADDR1 #endif #define S62X_DEV_NAME "s62x" #define DRIVER_VERSION "2.0.0" /*----------------------------------------------------------------------------*/ #define DEBUG 0 #define S62X_DEBUG 1 #define S62X_DEBUG_MSG 1 #define S62X_DEBUG_FUNC 1 #define S62X_DEBUG_DATA 1 #define S62X_RETRY_COUNT 9 #define S62X_DEFAULT_DELAY 100 #if S62X_DEBUG_MSG #define SSMDBG(format, ...) pr_debug("S62X " format "\n", ## __VA_ARGS__) #else #define SSMDBG(format, ...) #endif #if S62X_DEBUG_FUNC #define SSMFUNC(func) pr_debug("S62X " func " is called\n") #else #define SSMFUNC(func) #endif #define SSMERR(format, ...) pr_err("S62X " format "\n", ## __VA_ARGS__) /* Don't change this if you don't know why! (refer comment:ticket:35:2) */ #define PROJECT_ID "S628" /*----------------------------------------------------------------------------*/ #define SENSOR_DATA_SIZE 6 #define SENSOR_DATA_COUNT (SENSOR_DATA_SIZE/sizeof(short)) #define CALIBRATION_DATA_SIZE 12 #define RWBUF_SIZE 96 #define S62X_BUFSIZE 96 #define CONVERT_O 1 #define CONVERT_O_DIV 1 #define CONVERT_M 5 #define CONVERT_M_DIV 28 /*----------------------------------------------------------------------------*/ #define SS_SENSOR_MODE_OFF 0 #define SS_SENSOR_MODE_MEASURE 1 /*----------------------------------------------------------------------------*/ #define S62X_IDX_DEVICE_ID 0x00 #define DEVICE_ID_VALUE 0x21 #define S62X_IDX_DEVICE_INFO 0x01 #define DEVICE_INFO_VALUE 0x10 #define S62X_IDX_STA1 0x02 #define STA1_DRDY 0x01 #define S62X_IDX_X_LSB 0x03 #define S62X_IDX_STA2 0x09 #define S62X_IDX_MODE 0x0A #define MODE_TRIGGER 0x01 #define S62X_IDX_I2CDIS 0x0F #define I2CDIS_CIC 0x00 #define I2CDIS_ADC 0x01 #define S62X_IDX_SET_RESET 0x1A #define SET_RESET_SET 0x01 #define SET_RESET_RESET 0x02 #define S62X_IDX_SET_RESET_CON 0x1C #define S62X_IDX_VBGSEL 0x1D #define S62X_IDX_OSC_TRIM 0x1E #define S62X_IDX_ECO1 0x1F #ifdef USE_ALTERNATE_ADDRESS #define ECO1_DEFAULT 0x44 #else #define ECO1_DEFAULT 0x40 #endif #define S62X_IDX_ECO2 0x20 #define ECO2_MRAS_NO_RST 0x80 #define S62X_IDX_CHOP 0x21 #define S62X_IDX_BIAS 0x23 #define S62X_IDX_LDO_SEL 0x24 #define S62X_IDX_DATA_POL 0x25 #define S62X_IDX_ADC_RDY_CNT 0x27 #define S62X_IDX_W2 0x28 #define S62X_IDX_PW_VALUE 0x35 #define S62X_IDX_PROBE_OE 0x37 #define PROBE_OE_WATCHDOG 0x10 #define S62X_MUL_X 20 #define S62X_DIV_X 28 #define S62X_OFF_X 2048 #define S62X_MUL_Y 20 #define S62X_DIV_Y 28 #define S62X_OFF_Y 2048 #define S62X_MUL_Z 20 #define S62X_DIV_Z 32 #define S62X_OFF_Z 2048 /*----------------------------------------------------------------------------*/ static struct i2c_client *this_client; static short last_m_data[SENSOR_DATA_COUNT]; static struct mutex last_m_data_mutex; static short sensor_data[CALIBRATION_DATA_SIZE]; static struct mutex sensor_data_mutex; static DECLARE_WAIT_QUEUE_HEAD(open_wq); static short ssmd_delay = S62X_DEFAULT_DELAY; static char ssmd_status[RWBUF_SIZE]; static atomic_t open_flag = ATOMIC_INIT(0); static atomic_t m_flag = ATOMIC_INIT(0); static atomic_t o_flag = ATOMIC_INIT(0); static atomic_t m_get_data; static atomic_t o_get_data; static atomic_t dev_open_count; static atomic_t init_phase = ATOMIC_INIT(2); /* 1 = id check ok, 0 = init ok */ /*----------------------------------------------------------------------------*/ static const struct i2c_device_id s62x_i2c_id[] = { {S62X_DEV_NAME, 0}, {} }; /* static unsigned short s62x_force[] = { 0x00, S62X_I2C_ADDRESS, I2C_CLIENT_END, I2C_CLIENT_END }; static const unsigned short *const s62x_forces[] = { s62x_force, NULL }; */ struct mag_hw mag_cust; static struct mag_hw *hw = &mag_cust; /*----------------------------------------------------------------------------*/ static int s62x_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id); static int s62x_i2c_remove(struct i2c_client *client); static int s62x_i2c_detect(struct i2c_client *client, struct i2c_board_info *info); static int s62x_suspend(struct i2c_client *client, pm_message_t msg); static int s62x_resume(struct i2c_client *client); static int s62x_local_init(void); static int s62x_local_remove(void); /*----------------------------------------------------------------------------*/ enum SS_TRACE { SS_FUN_DEBUG = 0x01, SS_DATA_DEBUG = 0X02, SS_HWM_DEBUG = 0X04, SS_CTR_DEBUG = 0X08, SS_I2C_DEBUG = 0x10, }; /*----------------------------------------------------------------------------*/ struct s62x_i2c_data { struct i2c_client *client; struct mag_hw *hw; atomic_t layout; atomic_t trace; struct hwmsen_convert cvt; }; #define L2CHIP(x) ((x)/10) /* layout to chip id */ #define L2CVTI(x) ((x)%10) /* layout to cvt index */ static const struct of_device_id msensor_of_match[] = { { .compatible = "mediatek,msensor", }, {}, }; /*----------------------------------------------------------------------------*/ static struct i2c_driver s62x_i2c_driver = { .driver = { /*.owner = THIS_MODULE, */ .name = S62X_DEV_NAME, .of_match_table = msensor_of_match, }, .probe = s62x_i2c_probe, .remove = s62x_i2c_remove, .detect = s62x_i2c_detect, .suspend = s62x_suspend, .resume = s62x_resume, .id_table = s62x_i2c_id, }; static struct platform_driver ssm_sensor_driver = { .driver = { .name = "msensor", .of_match_table = msensor_of_match, } }; static struct mag_init_info s62x_init_info = { .name = S62X_DEV_NAME, .init = s62x_local_init, .uninit = s62x_local_remove, .platform_diver_addr = &ssm_sensor_driver, }; /*----------------------------------------------------------------------------*/ static void s62x_power(struct mag_hw *hw, unsigned int on) { } /*----------------------------------------------------------------------------*/ static int I2C_RxData(char *rxData, int length) { uint8_t loop_i; #if DEBUG int i; struct i2c_client *client = this_client; struct s62x_i2c_data *data = i2c_get_clientdata(client); char addr = rxData[0]; #endif /* Caller should check parameter validity. */ if ((rxData == NULL) || (length < 1)) return -EINVAL; for (loop_i = 0; loop_i < S62X_RETRY_COUNT; loop_i++) { this_client->addr = (this_client->addr & I2C_MASK_FLAG) | I2C_WR_FLAG; if (i2c_master_send (this_client, (const char *)rxData, ((length << 0X08) | 0X01))) { break; } mdelay(20); } if (loop_i >= S62X_RETRY_COUNT) { SSMERR("%s retry over %d\n", __func__, S62X_RETRY_COUNT); return -EIO; } #if DEBUG if (atomic_read(&data->trace) & SS_I2C_DEBUG) { SSMDBG("RxData len=%02x addr=%02x\n data=", length, addr); for (i = 0; i < length; i++) SSMDBG(" %02x", rxData[i]); SSMDBG("\n"); } #endif return 0; } static int I2C_TxData(char *txData, int length) { uint8_t loop_i; #if DEBUG int i; struct i2c_client *client = this_client; struct s62x_i2c_data *data = i2c_get_clientdata(client); #endif /* Caller should check parameter validity. */ if ((txData == NULL) || (length < 2)) return -EINVAL; this_client->addr = this_client->addr & I2C_MASK_FLAG; for (loop_i = 0; loop_i < S62X_RETRY_COUNT; loop_i++) { if (i2c_master_send(this_client, (const char *)txData, length) > 0) { break; } mdelay(10); } if (loop_i >= S62X_RETRY_COUNT) { SSMERR("%s retry over %d\n", __func__, S62X_RETRY_COUNT); return -EIO; } #if DEBUG if (atomic_read(&data->trace) & SS_I2C_DEBUG) { SSMDBG("TxData len=%02x addr=%02x\n data=", length, txData[0]); for (i = 0; i < (length - 1); i++) SSMDBG(" %02x", txData[i + 1]); SSMDBG("\n"); } #endif return 0; } static int I2C_TxData2(unsigned char c1, unsigned char c2) { unsigned char data[2]; data[0] = c1; data[1] = c2; return I2C_TxData(data, 2); } static int ECS_InitDevice(void) { char *err_desc = NULL; if (I2C_TxData2(S62X_IDX_BIAS, 0x00) < 0) { err_desc = "BIAS"; goto end_of_func; } if (I2C_TxData2(S62X_IDX_VBGSEL, 0x70) < 0) { err_desc = "VBGSEL"; goto end_of_func; } if (I2C_TxData2(S62X_IDX_OSC_TRIM, 0x00) < 0) { err_desc = "OSC_TRIM"; goto end_of_func; } if (I2C_TxData2(S62X_IDX_ECO1, ECO1_DEFAULT) < 0) { err_desc = "ECO1"; goto end_of_func; } if (I2C_TxData2(S62X_IDX_ECO2, 0x04) < 0) { err_desc = "ECO2"; goto end_of_func; } if (I2C_TxData2(S62X_IDX_CHOP, 0x05) < 0) { err_desc = "CHOP"; goto end_of_func; } if (I2C_TxData2(S62X_IDX_LDO_SEL, 0x13) < 0) { err_desc = "LDO_SEL"; goto end_of_func; } if (I2C_TxData2(S62X_IDX_PW_VALUE, 0x5f) < 0) { err_desc = "PW_VALUE"; goto end_of_func; } if (I2C_TxData2(S62X_IDX_SET_RESET_CON, 0x80) < 0) { err_desc = "SET_RESET_CON"; goto end_of_func; } if (I2C_TxData2(S62X_IDX_DATA_POL, 0x00) < 0) { err_desc = "DATA_POL"; goto end_of_func; } if (I2C_TxData2(S62X_IDX_ADC_RDY_CNT, 0x03) < 0) { err_desc = "ADC_RDY_CNT"; goto end_of_func; } if (I2C_TxData2(S62X_IDX_W2, 0x20) < 0) { err_desc = "W2"; goto end_of_func; } if (I2C_TxData2(S62X_IDX_PROBE_OE, 0x20 | PROBE_OE_WATCHDOG) < 0) { err_desc = "PROBE_OE"; goto end_of_func; } end_of_func: if (err_desc) { SSMERR("S62X_IDX_%s failed\n", err_desc); return -EFAULT; } #if DEBUG { struct i2c_client *client = this_client; struct s62x_i2c_data *data = i2c_get_clientdata(client); if ((atomic_read(&data->trace) & 0xF000) == 0x9000) return -EFAULT; atomic_set(&init_phase, 0); } #endif return 0; } static int ECS_SetMode_Off(void) { char *err_desc = NULL; if (I2C_TxData2(S62X_IDX_MODE, 0x00) < 0) { err_desc = "MODE"; goto end_of_func; } if (I2C_TxData2(S62X_IDX_ECO2, 0x04) < 0) { err_desc = "ECO2"; goto end_of_func; } if (I2C_TxData2(S62X_IDX_I2CDIS, I2CDIS_CIC) < 0) { err_desc = "ECO2"; goto end_of_func; } end_of_func: if (err_desc) { SSMERR("S62X_IDX_%s failed\n", err_desc); return -EFAULT; } return 0; } static int ECS_SetMode_Measure(void) { char *err_desc = NULL; if (I2C_TxData2(S62X_IDX_I2CDIS, I2CDIS_ADC) < 0) { err_desc = "I2CDIS"; goto end_of_func; } if (I2C_TxData2(S62X_IDX_ECO2, 0x04 | ECO2_MRAS_NO_RST) < 0) { err_desc = "ECO2"; goto end_of_func; } if (I2C_TxData2(S62X_IDX_MODE, MODE_TRIGGER) < 0) { err_desc = "MODE"; goto end_of_func; } end_of_func: if (err_desc) { SSMERR("S62X_IDX_%s failed\n", err_desc); return -EFAULT; } return 0; } static int ECS_SetMode(char mode) { int ret; switch (mode) { case SS_SENSOR_MODE_OFF: ret = ECS_SetMode_Off(); break; case SS_SENSOR_MODE_MEASURE: ret = ECS_SetMode_Measure(); break; default: SSMDBG("%s: Unknown mode(%d)", __func__, mode); return -EINVAL; } return ret; } static int ECS_CheckDevice(void) { char id1, id2; int err; id1 = S62X_IDX_DEVICE_ID; err = I2C_RxData(&id1, 1); if (err < 0) return err; id2 = S62X_IDX_DEVICE_INFO; err = I2C_RxData(&id2, 1); if (err < 0) return err; #if DEBUG { struct i2c_client *client = this_client; struct s62x_i2c_data *data = i2c_get_clientdata(client); if ((atomic_read(&data->trace) & 0xF000) == 0x8000) id1 = 0x00, id2 = 0x01; else atomic_set(&init_phase, 1); } #endif if (id1 != DEVICE_ID_VALUE || id2 != DEVICE_INFO_VALUE) { SSMERR("incorrect id %02X:%02X\n", id1, id2); return -EFAULT; } return 0; } static int ECS_SaveData(short *buf) { #if DEBUG struct i2c_client *client = this_client; struct s62x_i2c_data *data = i2c_get_clientdata(client); #endif mutex_lock(&sensor_data_mutex); memcpy(sensor_data, buf, sizeof(sensor_data)); mutex_unlock(&sensor_data_mutex); #if DEBUG if (atomic_read(&data->trace) & SS_HWM_DEBUG) { SSMDBG ("Get daemon data: %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d!", sensor_data[0], sensor_data[1], sensor_data[2], sensor_data[3], sensor_data[4], sensor_data[5], sensor_data[6], sensor_data[7], sensor_data[8], sensor_data[9], sensor_data[10], sensor_data[11]); } #endif return 0; } #define V(c1, c2) (int)(((((unsigned)(c1))<<8)|((unsigned)(c2)))&0x0fff) static int ECS_GetData(short *mag) { int loop_i, ret; struct i2c_client *client = this_client; struct s62x_i2c_data *data = i2c_get_clientdata(client); short v; char buf[6]; for (loop_i = 0; loop_i < S62X_RETRY_COUNT; loop_i++) { buf[0] = S62X_IDX_STA1; if (I2C_RxData(buf, 1)) { SSMERR("S62X_IDX_STA1 %s fail\n", __func__); return -1; } if (buf[0] == STA1_DRDY) break; msleep(20); } if (loop_i >= S62X_RETRY_COUNT) { SSMERR("%s retry over\n", __func__); return -1; } buf[0] = S62X_IDX_X_LSB; ret = I2C_RxData(buf, sizeof(buf)); if (ret < 0) { SSMERR("S62X_IDX_X_LSB %s fail\n", __func__); return -1; } v = V(buf[1], buf[0]), mag[data->cvt.map[0]] = (data->cvt.sign[0] > 0) ? v : (4095 - v); v = V(buf[5], buf[4]), mag[data->cvt.map[1]] = (data->cvt.sign[1] > 0) ? v : (4095 - v); v = V(buf[3], buf[2]), mag[data->cvt.map[2]] = (data->cvt.sign[2] > 0) ? v : (4095 - v); /* for debug only */ mutex_lock(&last_m_data_mutex); memcpy(last_m_data, mag, sizeof(last_m_data)); mutex_unlock(&last_m_data_mutex); #if DEBUG if (atomic_read(&data->trace) & SS_DATA_DEBUG) SSMDBG("Get device data: (%d,%d,%d)", mag[0], mag[1], mag[2]); #endif return 0; } static int ECS_GetOpenStatus(void) { wait_event_interruptible(open_wq, (atomic_read(&open_flag) != 0)); return atomic_read(&open_flag); } static int ECS_GetCloseStatus(void) { wait_event_interruptible(open_wq, (atomic_read(&open_flag) <= 0)); return atomic_read(&open_flag); } /*----------------------------------------------------------------------------*/ static int ECS_ReadChipInfo(char *buf, int bufsize) { static const char * const supported_chip[] = { "S628", "S628A", "S625A" }; int phase = atomic_read(&init_phase); struct i2c_client *client = this_client; struct s62x_i2c_data *data = i2c_get_clientdata(client); unsigned chip = L2CHIP(atomic_read(&data->layout)); int ret; if (!buf) return -1; if (!this_client) { *buf = 0; return -2; } if (phase != 0) { *buf = 0; return -3; } if (chip < sizeof(supported_chip) / sizeof(char *)) ret = sprintf(buf, supported_chip[chip]); else ret = sprintf(buf, "?"); return ret; } /*----------------------------------------------------------------------------*/ static ssize_t show_daemon_value(struct device_driver *ddri, char *buf) { char strbuf[S62X_BUFSIZE]; sprintf(strbuf, "s62xd"); return sprintf(buf, "%s", strbuf); } /*----------------------------------------------------------------------------*/ static ssize_t show_chipinfo_value(struct device_driver *ddri, char *buf) { char strbuf[S62X_BUFSIZE]; ECS_ReadChipInfo(strbuf, S62X_BUFSIZE); return sprintf(buf, "%s\n", strbuf); } /*----------------------------------------------------------------------------*/ static ssize_t show_sensordata_value(struct device_driver *ddri, char *buf) { short mdata[SENSOR_DATA_COUNT]; mutex_lock(&last_m_data_mutex); memcpy(mdata, last_m_data, sizeof(mdata)); mutex_unlock(&last_m_data_mutex); return sprintf(buf, "%d %d %d\n", mdata[0], mdata[1], mdata[2]); } /*----------------------------------------------------------------------------*/ static ssize_t show_posturedata_value(struct device_driver *ddri, char *buf) { short tmp[3]; tmp[0] = sensor_data[0] * CONVERT_O / CONVERT_O_DIV; tmp[1] = sensor_data[1] * CONVERT_O / CONVERT_O_DIV; tmp[2] = sensor_data[2] * CONVERT_O / CONVERT_O_DIV; return sprintf(buf, "%d, %d, %d\n", tmp[0], tmp[1], tmp[2]); } /*----------------------------------------------------------------------------*/ static ssize_t show_layout_value(struct device_driver *ddri, char *buf) { struct i2c_client *client = this_client; struct s62x_i2c_data *data = i2c_get_clientdata(client); return sprintf(buf, "(%d, %d)\n[%+2d %+2d %+2d]\n[%+2d %+2d %+2d]\n", data->hw->direction, atomic_read(&data->layout), data->cvt.sign[0], data->cvt.sign[1], data->cvt.sign[2], data->cvt.map[0], data->cvt.map[1], data->cvt.map[2]); } /*----------------------------------------------------------------------------*/ static ssize_t store_layout_value(struct device_driver *ddri, const char *buf, size_t count) { struct i2c_client *client = this_client; struct s62x_i2c_data *data = i2c_get_clientdata(client); int layout = 0; int ret; ret = kstrtoint(buf, 0, &layout); if (ret < 0) SSMERR("input err\n"); if (layout == 1) { atomic_set(&data->layout, layout); if (!hwmsen_get_convert(L2CVTI(layout), &data->cvt)) { SSMERR("HWMSEN_GET_CONVERT function error!\n"); } else if (!hwmsen_get_convert (L2CVTI(data->hw->direction), &data->cvt)) { SSMERR("invalid layout: %d, restore to %d\n", layout, data->hw->direction); } else { SSMERR("invalid layout: (%d, %d)\n", layout, data->hw->direction); hwmsen_get_convert(0, &data->cvt); } } else { SSMERR("invalid format = '%s'\n", buf); } return count; } /*----------------------------------------------------------------------------*/ static ssize_t show_status_value(struct device_driver *ddri, char *buf) { struct i2c_client *client = this_client; struct s62x_i2c_data *data = i2c_get_clientdata(client); ssize_t len = 0; len += snprintf(buf + len, PAGE_SIZE - len, "VERS: %s (%s)\n", DRIVER_VERSION, ssmd_status); if (data->hw) { len += snprintf(buf + len, PAGE_SIZE - len, "CUST: %d %d (%d %d)\n", data->hw->i2c_num, data->hw->direction, data->hw->power_id, data->hw->power_vol); } else { len += snprintf(buf + len, PAGE_SIZE - len, "CUST: NULL\n"); } switch (atomic_read(&init_phase)) { case 2: len += snprintf(buf + len, PAGE_SIZE - len, "IDCK: %d\n", ECS_CheckDevice()); break; case 1: len += snprintf(buf + len, PAGE_SIZE - len, "INIT: %d\n", ECS_InitDevice()); break; case 0: len += snprintf(buf + len, PAGE_SIZE - len, "OPEN: %d (%d/%d)\n", atomic_read(&dev_open_count), atomic_read(&m_get_data), atomic_read(&o_get_data)); break; } return len; } /*----------------------------------------------------------------------------*/ static ssize_t show_trace_value(struct device_driver *ddri, char *buf) { ssize_t res; struct s62x_i2c_data *obj = i2c_get_clientdata(this_client); if (NULL == obj) { SSMERR("data is null!!\n"); return 0; } res = snprintf(buf, PAGE_SIZE, "0x%04X\n", atomic_read(&obj->trace)); return res; } /*----------------------------------------------------------------------------*/ static ssize_t store_trace_value(struct device_driver *ddri, const char *buf, size_t count) { struct s62x_i2c_data *obj = i2c_get_clientdata(this_client); int trace; if (NULL == obj) { SSMERR("data is null!!\n"); return 0; } if (1 == sscanf(buf, "0x%x", &trace)) atomic_set(&obj->trace, trace); else SSMERR("invalid content: '%s', length = %d\n", buf, count); return count; } /*----------------------------------------------------------------------------*/ static DRIVER_ATTR(daemon, S_IRUGO, show_daemon_value, NULL); static DRIVER_ATTR(chipinfo, S_IRUGO, show_chipinfo_value, NULL); static DRIVER_ATTR(sensordata, S_IRUGO, show_sensordata_value, NULL); static DRIVER_ATTR(posturedata, S_IRUGO, show_posturedata_value, NULL); static DRIVER_ATTR(status, S_IRUGO, show_status_value, NULL); static DRIVER_ATTR(layout, S_IRUGO | S_IWUSR, show_layout_value, store_layout_value); static DRIVER_ATTR(trace, S_IRUGO | S_IWUSR, show_trace_value, store_trace_value); /*----------------------------------------------------------------------------*/ static struct driver_attribute *s62x_attr_list[] = { &driver_attr_daemon, &driver_attr_chipinfo, &driver_attr_sensordata, &driver_attr_posturedata, &driver_attr_status, &driver_attr_layout, &driver_attr_trace, }; /*----------------------------------------------------------------------------*/ static int s62x_create_attr(struct device_driver *driver) { int idx, err = 0; int num = (int)(sizeof(s62x_attr_list) / sizeof(s62x_attr_list[0])); if (driver == NULL) return -EINVAL; for (idx = 0; idx < num; idx++) { err = driver_create_file(driver, s62x_attr_list[idx]); if (err != 0) { SSMERR("driver_create_file (%s) = %d\n", s62x_attr_list[idx]->attr.name, err); break; } } return err; } /*----------------------------------------------------------------------------*/ static int s62x_delete_attr(struct device_driver *driver) { int idx, err = 0; int num = (int)(sizeof(s62x_attr_list) / sizeof(s62x_attr_list[0])); if (driver == NULL) return -EINVAL; for (idx = 0; idx < num; idx++) driver_remove_file(driver, s62x_attr_list[idx]); return err; } /*----------------------------------------------------------------------------*/ static int s62x_open(struct inode *inode, struct file *file) { int ret = -1; #if DEBUG struct s62x_i2c_data *obj = i2c_get_clientdata(this_client); if (atomic_read(&obj->trace) & SS_CTR_DEBUG) SSMDBG("open device node"); #endif atomic_inc(&dev_open_count); ret = nonseekable_open(inode, file); return ret; } /*----------------------------------------------------------------------------*/ static int s62x_release(struct inode *inode, struct file *file) { #if DEBUG struct s62x_i2c_data *obj = i2c_get_clientdata(this_client); if (atomic_read(&obj->trace) & SS_CTR_DEBUG) SSMDBG("release device node"); #endif atomic_dec(&dev_open_count); return 0; } /*----------------------------------------------------------------------------*/ static int factory_mode(void) { /* for factory mode (without open from the Daemon and successfully initialized) */ return (atomic_read(&dev_open_count) == 1 && atomic_read(&init_phase) == 0); } /*----------------------------------------------------------------------------*/ static long s62x_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { void __user *argp = (void __user *)arg; /* NOTE: In this function the size of "char" should be 1-byte. */ short mdata[SENSOR_DATA_COUNT]; char rwbuf[RWBUF_SIZE]; char buff[S62X_BUFSIZE]; char mode; short value[12]; uint32_t enable; struct hwm_sensor_data *hwm_data; short delay; int status; int ret = -1; switch (cmd) { case ECS_IOCTL_WRITE: if (argp == NULL) { SSMDBG("invalid argument."); return -EINVAL; } if (copy_from_user(rwbuf, argp, sizeof(rwbuf))) { SSMDBG("copy_from_user failed."); return -EFAULT; } if (rwbuf[0] == 0) { memset(ssmd_status, 0, sizeof(ssmd_status)); strncpy(ssmd_status, &rwbuf[1], sizeof(ssmd_status) - 1); break; } if ((rwbuf[0] < 2) || (rwbuf[0] > (RWBUF_SIZE - 1))) { SSMDBG("invalid argument."); return -EINVAL; } ret = I2C_TxData(&rwbuf[1], rwbuf[0]); if (ret < 0) return ret; break; case ECS_IOCTL_READ: if (argp == NULL) { SSMDBG("invalid argument."); return -EINVAL; } if (copy_from_user(rwbuf, argp, sizeof(rwbuf))) { SSMDBG("copy_from_user failed."); return -EFAULT; } if ((rwbuf[0] < 1) || (rwbuf[0] > (RWBUF_SIZE - 1))) { SSMDBG("invalid argument."); return -EINVAL; } ret = I2C_RxData(&rwbuf[1], rwbuf[0]); if (ret < 0) return ret; if (copy_to_user(argp, rwbuf, rwbuf[0] + 1)) { SSMDBG("copy_to_user failed."); return -EFAULT; } break; case ECS_IOCTL_SET_MODE: if (argp == NULL) { SSMDBG("invalid argument."); return -EINVAL; } if (copy_from_user(&mode, argp, sizeof(mode))) { SSMDBG("copy_from_user failed."); return -EFAULT; } ret = ECS_SetMode(mode); if (ret < 0) return ret; break; case MSENSOR_IOCTL_SET_MODE: SSMDBG("arg = %d\n", (char)arg); ret = ECS_SetMode((char)arg); if (ret < 0) return ret; break; case ECS_IOCTL_GETDATA: ret = ECS_GetData(mdata); if (ret < 0) return ret; if (copy_to_user(argp, mdata, sizeof(mdata))) { SSMDBG("copy_to_user failed."); return -EFAULT; } break; case ECS_IOCTL_SET_YPR: if (argp == NULL) { SSMDBG("invalid argument."); return -EINVAL; } if (copy_from_user(value, argp, sizeof(value))) { SSMDBG("copy_from_user failed."); return -EFAULT; } ECS_SaveData(value); break; case ECS_IOCTL_GET_OPEN_STATUS: status = ECS_GetOpenStatus(); SSMDBG("ECS_GetOpenStatus returned (%d)", status); if (copy_to_user(argp, &status, sizeof(status))) { SSMDBG("copy_to_user failed."); return -EFAULT; } break; case ECS_IOCTL_GET_CLOSE_STATUS: status = ECS_GetCloseStatus(); SSMDBG("ECS_GetCloseStatus returned (%d)", status); if (copy_to_user(argp, &status, sizeof(status))) { SSMDBG("copy_to_user failed."); return -EFAULT; } break; case ECS_IOCTL_GET_DELAY: delay = ssmd_delay; if (copy_to_user(argp, &delay, sizeof(delay))) { SSMDBG("copy_to_user failed."); return -EFAULT; } break; case ECS_IOCTL_GET_PROJECT_NAME: if (argp == NULL) { SSMERR("IO parameter pointer is NULL!\n"); break; } sprintf(buff, PROJECT_ID); status = ECS_ReadChipInfo(buff + sizeof(PROJECT_ID), S62X_BUFSIZE - sizeof(PROJECT_ID)); status = status < 0 ? sizeof(PROJECT_ID) : sizeof(PROJECT_ID) + status + 1; if (copy_to_user(argp, buff, status)) return -EFAULT; break; case MSENSOR_IOCTL_READ_CHIPINFO: if (argp == NULL) { SSMERR("IO parameter pointer is NULL!\n"); break; } ECS_ReadChipInfo(buff, S62X_BUFSIZE); if (copy_to_user(argp, buff, strlen(buff) + 1)) return -EFAULT; break; case MSENSOR_IOCTL_READ_SENSORDATA: if (argp == NULL) { SSMERR("IO parameter pointer is NULL!\n"); break; } if (factory_mode()) { ret = ECS_GetData(mdata); if (ret < 0) return -EFAULT; } mutex_lock(&last_m_data_mutex); memcpy(mdata, last_m_data, sizeof(mdata)); mutex_unlock(&last_m_data_mutex); mdata[0] = mdata[0] * S62X_MUL_X / S62X_DIV_X; mdata[1] = mdata[1] * S62X_MUL_Y / S62X_DIV_Y; mdata[2] = mdata[2] * S62X_MUL_Z / S62X_DIV_Z; sprintf(buff, "%x %x %x", (int)mdata[0], (int)mdata[1], (int)mdata[2]); if (copy_to_user(argp, buff, strlen(buff) + 1)) return -EFAULT; break; case MSENSOR_IOCTL_SENSOR_ENABLE: if (argp == NULL) { SSMERR("IO parameter pointer is NULL!\n"); break; } if (copy_from_user(&enable, argp, sizeof(enable))) { SSMDBG("copy_from_user failed."); return -EFAULT; } SSMDBG("MSENSOR_IOCTL_SENSOR_ENABLE enable=%d", enable); if (enable == 1) { atomic_set(&o_flag, 1); atomic_set(&open_flag, 1); } else { atomic_set(&o_get_data, 0); atomic_set(&o_flag, 0); if (atomic_read(&m_flag) == 0) atomic_set(&open_flag, 0); } wake_up(&open_wq); if (factory_mode()) { int mode = enable ? SS_SENSOR_MODE_MEASURE : SS_SENSOR_MODE_OFF; SSMDBG ("MSENSOR_IOCTL_SENSOR_ENABLE SetMode(%d)\n", mode); ECS_SetMode(mode); } break; case MSENSOR_IOCTL_READ_FACTORY_SENSORDATA: if (argp == NULL) { SSMERR("IO parameter pointer is NULL!\n"); break; } hwm_data = (struct hwm_sensor_data *) buff; mutex_lock(&sensor_data_mutex); hwm_data->values[0] = sensor_data[0] * CONVERT_O; hwm_data->values[1] = sensor_data[1] * CONVERT_O; hwm_data->values[2] = sensor_data[2] * CONVERT_O; hwm_data->status = sensor_data[4]; hwm_data->value_divide = CONVERT_O_DIV; mutex_unlock(&sensor_data_mutex); sprintf(buff, "%x %x %x %x %x", hwm_data->values[0], hwm_data->values[1], hwm_data->values[2], hwm_data->status, hwm_data->value_divide); if (copy_to_user(argp, buff, strlen(buff) + 1)) return -EFAULT; break; default: SSMERR("%s not supported = 0x%x\n", __func__, cmd); return -ENOIOCTLCMD; } return 0; } /*----------------------------------------------------------------------------*/ static const struct file_operations s62x_fops = { .owner = THIS_MODULE, .open = s62x_open, .release = s62x_release, .unlocked_ioctl = s62x_ioctl, }; /*----------------------------------------------------------------------------*/ static struct miscdevice s62x_device = { .minor = MISC_DYNAMIC_MINOR, .name = "msensor", .fops = &s62x_fops, }; /*----------------------------------------------------------------------------*/ int s62x_operate(void *self, uint32_t command, void *buff_in, int size_in, void *buff_out, int size_out, int *actualout) { int err = 0; int value; struct hwm_sensor_data *msensor_data; #if DEBUG struct i2c_client *client = this_client; struct s62x_i2c_data *data = i2c_get_clientdata(client); #endif #if DEBUG if (atomic_read(&data->trace) & SS_FUN_DEBUG) SSMFUNC("s62x_operate"); #endif switch (command) { case SENSOR_DELAY: if ((buff_in == NULL) || (size_in < sizeof(int))) { SSMERR("Set delay parameter error!\n"); err = -EINVAL; } else { value = *(int *)buff_in; if (value <= 20) ssmd_delay = 20; ssmd_delay = value; } break; case SENSOR_ENABLE: if ((buff_in == NULL) || (size_in < sizeof(int))) { SSMERR("Enable sensor parameter error!\n"); err = -EINVAL; } else { value = *(int *)buff_in; if (value == 1) { atomic_set(&m_flag, 1); atomic_set(&open_flag, 1); } else { atomic_set(&m_get_data, 0); atomic_set(&m_flag, 0); if (atomic_read(&o_flag) == 0) atomic_set(&open_flag, 0); } wake_up(&open_wq); } break; case SENSOR_GET_DATA: atomic_inc(&m_get_data); if ((buff_out == NULL) || (size_out < sizeof(struct hwm_sensor_data))) { SSMERR("get sensor data parameter error!\n"); err = -EINVAL; } else { msensor_data = (struct hwm_sensor_data *) buff_out; mutex_lock(&sensor_data_mutex); msensor_data->values[0] = sensor_data[9] * CONVERT_M; msensor_data->values[1] = sensor_data[10] * CONVERT_M; msensor_data->values[2] = sensor_data[11] * CONVERT_M; msensor_data->status = sensor_data[4]; msensor_data->value_divide = CONVERT_M_DIV; mutex_unlock(&sensor_data_mutex); #if DEBUG if (atomic_read(&data->trace) & SS_HWM_DEBUG) { SSMDBG ("Hwm get m-sensor data: %d, %d, %d. divide %d, status %d!", msensor_data->values[0], msensor_data->values[1], msensor_data->values[2], msensor_data->value_divide, msensor_data->status); } #endif } break; default: SSMERR("msensor operate function no this parameter %d!\n", command); err = -1; break; } return err; } /*----------------------------------------------------------------------------*/ int s62x_orientation_operate(void *self, uint32_t command, void *buff_in, int size_in, void *buff_out, int size_out, int *actualout) { int err = 0; int value; struct hwm_sensor_data *osensor_data; #if DEBUG struct i2c_client *client = this_client; struct s62x_i2c_data *data = i2c_get_clientdata(client); #endif #if DEBUG if (atomic_read(&data->trace) & SS_FUN_DEBUG) SSMFUNC("s62x_orientation_operate"); #endif switch (command) { case SENSOR_DELAY: if ((buff_in == NULL) || (size_in < sizeof(int))) { SSMERR("Set delay parameter error!\n"); err = -EINVAL; } else { value = *(int *)buff_in; if (value <= 20) ssmd_delay = 20; ssmd_delay = value; } break; case SENSOR_ENABLE: if ((buff_in == NULL) || (size_in < sizeof(int))) { SSMERR("Enable sensor parameter error!\n"); err = -EINVAL; } else { value = *(int *)buff_in; if (value == 1) { atomic_set(&o_flag, 1); atomic_set(&open_flag, 1); } else { atomic_set(&o_get_data, 0); atomic_set(&o_flag, 0); if (atomic_read(&m_flag) == 0) atomic_set(&open_flag, 0); } wake_up(&open_wq); } break; case SENSOR_GET_DATA: atomic_inc(&o_get_data); if ((buff_out == NULL) || (size_out < sizeof(struct hwm_sensor_data))) { SSMERR("get sensor data parameter error!\n"); err = -EINVAL; } else { osensor_data = (struct hwm_sensor_data *) buff_out; mutex_lock(&sensor_data_mutex); osensor_data->values[0] = sensor_data[0] * CONVERT_O; osensor_data->values[1] = sensor_data[1] * CONVERT_O; osensor_data->values[2] = sensor_data[2] * CONVERT_O; osensor_data->status = sensor_data[4]; osensor_data->value_divide = CONVERT_O_DIV; mutex_unlock(&sensor_data_mutex); #if DEBUG if (atomic_read(&data->trace) & SS_HWM_DEBUG) { SSMDBG ("Hwm get o-sensor data: %d, %d, %d. divide %d, status %d!", osensor_data->values[0], osensor_data->values[1], osensor_data->values[2], osensor_data->value_divide, osensor_data->status); } #endif } break; default: SSMERR("gsensor operate function no this parameter %d!\n", command); err = -1; break; } return err; } /*----------------------------------------------------------------------------*/ static int s62x_suspend(struct i2c_client *client, pm_message_t msg) { struct s62x_i2c_data *obj = i2c_get_clientdata(client); if (msg.event == PM_EVENT_SUSPEND) s62x_power(obj->hw, 0); return 0; } /*----------------------------------------------------------------------------*/ static int s62x_resume(struct i2c_client *client) { struct s62x_i2c_data *obj = i2c_get_clientdata(client); s62x_power(obj->hw, 1); return 0; } /*----------------------------------------------------------------------------*/ static int s62x_i2c_detect(struct i2c_client *client, struct i2c_board_info *info) { strcpy(info->type, S62X_DEV_NAME); return 0; } /*----------------------------------------------------------------------------*/ #ifdef _MAGIC_KPT_COMMAND static int magic_kpt_command(const struct i2c_client *client) { char cmd1[] = { 0x0A, 0x00 }; char cmd2[] = { 0x0F, 0x1B }; struct i2c_msg msg[] = { { .addr = S62X_I2C_ADDR1, .flags = 0, .len = sizeof(cmd1), .buf = cmd1, } , { .addr = S62X_I2C_ADDR1, .flags = 0, .len = sizeof(cmd2), .buf = cmd2, } , }; return i2c_transfer(client->adapter, msg, 2); } #endif /*----------------------------------------------------------------------------*/ #ifdef USE_ALTERNATE_ADDRESS static int s62x_change_address(const struct i2c_client *client) { uint8_t loop_i; char cmd[] = { S62X_IDX_ECO1, ECO1_DEFAULT }; struct i2c_msg msg[] = { { .addr = S62X_I2C_ADDR1, .flags = 0, .len = sizeof(cmd), .buf = cmd, } , }; for (loop_i = 0; loop_i < 3; loop_i++) { if (i2c_transfer(client->adapter, msg, 1) > 0) return 0; mdelay(10); } /* SSMERR("change address retry over %d\n", loop_i); */ return -EIO; } #endif static int s62x_m_enable(int en) { int value = 0; int err = 0; value = en; if (value == 1) { atomic_set(&m_flag, 1); atomic_set(&open_flag, 1); err = ECS_SetMode(SS_SENSOR_MODE_MEASURE); if (err < 0) { SSMDBG("%s:ECS_SetMode on Error.\n", __func__); return err; } } else { atomic_set(&m_flag, 0); if (atomic_read(&o_flag) == 0) { atomic_set(&open_flag, 0); err = ECS_SetMode(SS_SENSOR_MODE_OFF); if (err < 0) { SSMDBG("%s:ECS_SetMode off Error.\n", __func__); return err; } } } wake_up(&open_wq); return err; } static int s62x_m_set_delay(u64 ns) { int value = 0; value = (int)ns/1000/1000; if (value <= 20) ssmd_delay = 20; else ssmd_delay = value; return 0; } static int s62x_m_open_report_data(int open) { return 0; } static int s62x_m_get_data(int *x , int *y, int *z, int *status) { mutex_lock(&sensor_data_mutex); *x = sensor_data[9] * CONVERT_M; *y = sensor_data[10] * CONVERT_M; *z = sensor_data[11] * CONVERT_M; *status = sensor_data[4]; mutex_unlock(&sensor_data_mutex); return 0; } static int s62x_o_enable(int en) { int value = 0; int err = 0; value = en; if (value == 1) { atomic_set(&o_flag, 1); atomic_set(&open_flag, 1); err = ECS_SetMode(SS_SENSOR_MODE_MEASURE); if (err < 0) { SSMERR("%s:ECS_SetMode on Error.\n", __func__); return err; } } else { atomic_set(&o_get_data, 0); atomic_set(&o_flag, 0); if (atomic_read(&m_flag) == 0) atomic_set(&open_flag, 0); err = ECS_SetMode(SS_SENSOR_MODE_OFF); if (err < 0) { SSMERR("%s:ECS_SetMode off Error.\n", __func__); return err; } } wake_up(&open_wq); return err; } static int s62x_o_set_delay(u64 ns) { int value = 0; value = (int)ns/1000/1000; if (value <= 20) ssmd_delay = 20; else ssmd_delay = value; return 0; } static int s62x_o_open_report_data(int open) { return 0; } static int s62x_o_get_data(int *x , int *y, int *z, int *status) { mutex_lock(&sensor_data_mutex); *x = sensor_data[0] * CONVERT_O; *y = sensor_data[1] * CONVERT_O; *z = sensor_data[2] * CONVERT_O; *status = sensor_data[4]; mutex_unlock(&sensor_data_mutex); return 0; } /*----------------------------------------------------------------------------*/ static int s62x_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct i2c_client *new_client; struct s62x_i2c_data *data; int err = 0; struct mag_control_path ctl = {0}; struct mag_data_path mag_data = {0}; data = kmalloc(sizeof(struct s62x_i2c_data), GFP_KERNEL); if (!data) { err = -ENOMEM; goto exit; } memset(data, 0, sizeof(struct s62x_i2c_data)); data->hw = hw; if (hwmsen_get_convert(L2CVTI(data->hw->direction), &data->cvt)) { SSMERR("invalid direction: %d\n", data->hw->direction); goto exit_init_failed; } atomic_set(&data->layout, data->hw->direction); atomic_set(&data->trace, 0x0000); mutex_init(&last_m_data_mutex); mutex_init(&sensor_data_mutex); init_waitqueue_head(&open_wq); data->client = client; new_client = data->client; i2c_set_clientdata(new_client, data); this_client = new_client; #ifdef _MAGIC_KPT_COMMAND magic_kpt_command(client); #endif #ifdef USE_ALTERNATE_ADDRESS err = s62x_change_address(client); SSMERR("address change %s\n", err == 0 ? "OK" : "NG"); #endif #ifdef _FORCE_PROBE_ERROR SSMERR("force probe error\n"); return -1; #endif /* Check connection */ if (ECS_CheckDevice() != 0) { SSMERR("check device connect error\n"); } else { atomic_set(&init_phase, 1); if (ECS_InitDevice() != 0) SSMERR("init device error\n"); else atomic_set(&init_phase, 0); } /* Register sysfs attribute */ err = s62x_create_attr(&(s62x_init_info.platform_diver_addr->driver)); if (err != 0) { SSMERR("create attribute err = %d\n", err); goto exit_sysfs_create_group_failed; } #ifdef ENABLE_DUALSTACK_MODE if (atomic_read(&init_phase) == 2) { SSMERR("dual stack mode exit\n"); goto exit_init_failed; } #endif err = misc_register(&s62x_device); if (err != 0) { SSMERR("device register failed\n"); goto exit_misc_device_register_failed; } ctl.is_use_common_factory = false; ctl.m_enable = s62x_m_enable; ctl.m_set_delay = s62x_m_set_delay; ctl.m_open_report_data = s62x_m_open_report_data; ctl.o_enable = s62x_o_enable; ctl.o_set_delay = s62x_o_set_delay; ctl.o_open_report_data = s62x_o_open_report_data; ctl.is_report_input_direct = false; ctl.is_support_batch = data->hw->is_batch_supported; err = mag_register_control_path(&ctl); if (err) { SSMDBG("register mag control path err\n"); goto exit_kfree; } mag_data.div_m = CONVERT_M_DIV; mag_data.div_o = CONVERT_O_DIV; mag_data.get_data_o = s62x_o_get_data; mag_data.get_data_m = s62x_m_get_data; err = mag_register_data_path(&mag_data); if (err) { SSMDBG("register data control path err\n"); goto exit_kfree; } SSMDBG("%s: %s", __func__, atomic_read(&init_phase) ? "NG" : "OK"); return 0; exit_sysfs_create_group_failed: exit_init_failed: exit_misc_device_register_failed: exit_kfree: kfree(data); exit: SSMERR("%s: err = %d\n", __func__, err); return err; } /*----------------------------------------------------------------------------*/ static int s62x_i2c_remove(struct i2c_client *client) { int err; err = s62x_delete_attr(&(s62x_init_info.platform_diver_addr->driver)); if (err != 0) SSMERR("delete_attr fail: %d\n", err); this_client = NULL; i2c_unregister_device(client); kfree(i2c_get_clientdata(client)); misc_deregister(&s62x_device); return 0; } /*----------------------------------------------------------------------------*/ static int s62x_local_init(void) { s62x_power(hw, 1); atomic_set(&dev_open_count, 0); if (i2c_add_driver(&s62x_i2c_driver)) { SSMERR("add driver error\n"); return -1; } return 0; } /*----------------------------------------------------------------------------*/ static int s62x_local_remove(void) { s62x_power(hw, 0); atomic_set(&dev_open_count, 0); i2c_del_driver(&s62x_i2c_driver); return 0; } /*----------------------------------------------------------------------------*/ static int __init s62x_init(void) { const char *name = "mediatek,s62x"; hw = get_mag_dts_func(name, hw); if (!hw) SSMERR("get dts info fail\n"); mag_driver_add(&s62x_init_info); return 0; } /*----------------------------------------------------------------------------*/ static void __exit s62x_exit(void) { } /*----------------------------------------------------------------------------*/ module_init(s62x_init); module_exit(s62x_exit); MODULE_DESCRIPTION("S62X Compass Driver"); MODULE_LICENSE("GPL"); MODULE_VERSION(DRIVER_VERSION);