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drivers/misc/fxos8700.c
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6d692eaae MLK-10835-2 misc:... |
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/* * Copyright (C) 2012-2013 Freescale Semiconductor, Inc. All Rights Reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/i2c.h> #include <linux/pm.h> #include <linux/mutex.h> #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/hwmon-sysfs.h> #include <linux/err.h> #include <linux/hwmon.h> #include <linux/input-polldev.h> #include <linux/miscdevice.h> #include <linux/poll.h> /*register define*/ #define FXOS8700_STATUS 0x00 #define FXOS8700_OUT_X_MSB 0x01 #define FXOS8700_OUT_X_LSB 0x02 #define FXOS8700_OUT_Y_MSB 0x03 #define FXOS8700_OUT_Y_LSB 0x04 #define FXOS8700_OUT_Z_MSB 0x05 #define FXOS8700_OUT_Z_LSB 0x06 #define FXOS8700_F_SETUP 0x09 #define FXOS8700_TRIG_CFG 0x0a #define FXOS8700_SYSMOD 0x0B #define FXOS8700_INT_SOURCE 0x0c #define FXOS8700_WHO_AM_I 0x0d #define FXOS8700_XYZ_DATA_CFG 0x0e #define FXOS8700_HP_FILTER_CUTOFF 0x0f #define FXOS8700_PL_STATUS 0x10 #define FXOS8700_PL_CFG 0x11 #define FXOS8700_PL_COUNT 0x12 #define FXOS8700_PL_BF_ZCOMP 0x13 #define FXOS8700_PL_P_L_THS_REG 0x14 #define FXOS8700_FFMT_CFG 0x15 #define FXOS8700_FFMT_SRC 0x16 #define FXOS8700_FFMT_THS 0x17 #define FXOS8700_FFMT_COUNT 0x18 #define FXOS8700_TRANSIDENT1_CFG 0x1d #define FXOS8700_TRANSIDENT1_SRC 0x1e #define FXOS8700_TRANSIDENT1_THS 0x1f #define FXOS8700_TRANSIDENT1_COUNT 0x20 #define FXOS8700_PULSE_CFG 0x21 #define FXOS8700_PULSE_SRC 0x22 #define FXOS8700_PULSE_THSX 0x23 #define FXOS8700_PULSE_THSY 0x24 #define FXOS8700_PULSE_THSZ 0x25 #define FXOS8700_PULSE_TMLT 0x26 #define FXOS8700_PULSE_LTCY 0x27 #define FXOS8700_PULSE_WIND 0x28 #define FXOS8700_ATSLP_COUNT 0x29 #define FXOS8700_CTRL_REG1 0x2a #define FXOS8700_CTRL_REG2 0x2b #define FXOS8700_CTRL_REG3 0x2c #define FXOS8700_CTRL_REG4 0x2d #define FXOS8700_CTRL_REG5 0x2e #define FXOS8700_OFF_X 0x2f #define FXOS8700_OFF_Y 0x30 #define FXOS8700_OFF_Z 0x31 #define FXOS8700_M_DR_STATUS 0x32 #define FXOS8700_M_OUT_X_MSB 0x33 #define FXOS8700_M_OUT_X_LSB 0x34 #define FXOS8700_M_OUT_Y_MSB 0x35 #define FXOS8700_M_OUT_Y_LSB 0x36 #define FXOS8700_M_OUT_Z_MSB 0x37 #define FXOS8700_M_OUT_Z_LSB 0x38 #define FXOS8700_CMP_X_MSB 0x39 #define FXOS8700_CMP_X_LSB 0x3a #define FXOS8700_CMP_Y_MSB 0x3b #define FXOS8700_CMP_Y_LSB 0x3c #define FXOS8700_CMP_Z_MSB 0x3d #define FXOS8700_CMP_Z_LSB 0x3e #define FXOS8700_M_OFF_X_MSB 0x3f #define FXOS8700_M_OFF_X_LSB 0x40 #define FXOS8700_M_OFF_Y_MSB 0x41 #define FXOS8700_M_OFF_Y_LSB 0x42 #define FXOS8700_M_OFF_Z_MSB 0x43 #define FXOS8700_M_OFF_Z_LSB 0x44 #define FXOS8700_MAX_X_MSB 0x45 #define FXOS8700_MAX_X_LSB 0x46 #define FXOS8700_MAX_Y_MSB 0x47 #define FXOS8700_MAX_Y_LSB 0x48 #define FXOS8700_MAX_Z_MSB 0x49 #define FXOS8700_MAX_Z_LSB 0x4a #define FXOS8700_MIN_X_MSB 0x4b #define FXOS8700_MIN_X_LSB 0x4c #define FXOS8700_MIN_Y_MSB 0x4d #define FXOS8700_MIN_Y_LSB 0x4e #define FXOS8700_MIN_Z_MSB 0x4f #define FXOS8700_MIN_Z_LSB 0x50 #define FXOS8700_M_TEMP 0x51 #define FXOS8700_MAG_THS_CFG 0x52 #define FXOS8700_MAG_THS_SRC 0x53 #define FXOS8700_MAG_THS_THS_X1 0x54 #define FXOS8700_MAG_THS_THS_X0 0x55 #define FXOS8700_MAG_THS_THS_Y1 0x56 #define FXOS8700_MAG_THS_THS_Y0 0x57 #define FXOS8700_MAG_THS_THS_Z1 0x58 #define FXOS8700_MAG_THS_THS_Z0 0x59 #define FXOS8700_MAG_THS_CUNT 0x5a #define FXOS8700_M_CTRL_REG1 0x5b #define FXOS8700_M_CTRL_REG2 0x5c #define FXOS8700_M_CTRL_REG3 0x5d #define FXOS8700_M_INT_SOURCE 0x5e #define FXOS8700_G_VECM_CFG 0x5f #define FXOS8700_G_VECM_THS_MSB 0x60 #define FXOS8700_G_VECM_THS_LSB 0x61 #define FXOS8700_G_VECM_CNT 0x62 #define FXOS8700_G_VECM_INITX_MSB 0x63 #define FXOS8700_G_VECM_INITX_LSB 0x64 #define FXOS8700_G_VECM_INITY_MSB 0x65 #define FXOS8700_G_VECM_INITY_LSB 0x66 #define FXOS8700_G_VECM_INITZ_MSB 0x67 #define FXOS8700_G_VECM_INITZ_LSB 0x68 #define FXOS8700_M_VECM_CFG 0x69 #define FXOS8700_M_VECM_THS_MSB 0x6a #define FXOS8700_M_VECM_THS_LSB 0x6b #define FXOS8700_M_VECM_CNT 0x6d #define FXOS8700_M_VECM_INITX_MSB 0x6d #define FXOS8700_M_VECM_INITX_LSB 0x6e #define FXOS8700_M_VECM_INITY_MSB 0x6f #define FXOS8700_M_VECM_INITY_LSB 0x70 #define FXOS8700_M_VECM_INITZ_MSB 0x71 #define FXOS8700_M_VECM_INITZ_LSB 0x72 #define FXOS8700_G_FFMT_THS_X1 0x73 #define FXOS8700_G_FFMT_THS_X0 0x74 #define FXOS8700_G_FFMT_THS_Y1 0x75 #define FXOS8700_G_FFMT_THS_Y0 0x76 #define FXOS8700_G_FFMT_THS_Z1 0x77 #define FXOS8700_G_FFMT_THS_Z0 0x78 #define FXOS8700_G_TRAN_INIT_MSB 0x79 #define FXOS8700_G_TRAN_INIT_LSB_X 0x7a #define FXOS8700_G_TRAN_INIT_LSB_Y 0x7b #define FXOS8700_G_TRAN_INIT_LSB_Z 0x7d #define FXOS8700_TM_NVM_LOCK 0x7e #define FXOS8700_NVM_DATA0_35 0x80 #define FXOS8700_NVM_DATA_BNK3 0xa4 #define FXOS8700_NVM_DATA_BNK2 0xa5 #define FXOS8700_NVM_DATA_BNK1 0xa6 #define FXOS8700_NVM_DATA_BNK0 0xa7 #define SENSOR_IOCTL_BASE 'S' #define SENSOR_GET_MODEL_NAME _IOR(SENSOR_IOCTL_BASE, 0, char *) #define SENSOR_GET_POWER_STATUS _IOR(SENSOR_IOCTL_BASE, 2, int) #define SENSOR_SET_POWER_STATUS _IOR(SENSOR_IOCTL_BASE, 3, int) #define SENSOR_GET_DELAY_TIME _IOR(SENSOR_IOCTL_BASE, 4, int) #define SENSOR_SET_DELAY_TIME _IOR(SENSOR_IOCTL_BASE, 5, int) #define SENSOR_GET_RAW_DATA _IOR(SENSOR_IOCTL_BASE, 6, short[3]) #define FXOS8700_I2C_ADDR 0x1E #define FXOS8700_DEVICE_ID 0xC7 #define FXOS8700_PRE_DEVICE_ID 0xC4 #define FXOS8700_DATA_BUF_SIZE 6 #define FXOS8700_DELAY_DEFAULT 200 /* msecs */ #define FXOS8700_POSITION_DEFAULT 1 /* msecs */ #define FXOS8700_TYPE_ACC 0x00 #define FXOS8700_TYPE_MAG 0x01 #define FXOS8700_STANDBY 0x00 #define FXOS8700_ACTIVED 0x01 #define ABS_STATUS ABS_WHEEL #define FXOS8700_DRIVER "fxos8700" #define ABSMAX_ACC_VAL 0x01FF #define ABSMIN_ACC_VAL -(ABSMAX_ACC_VAL) #define FXOS8700_POLL_INTERVAL 400 #define FXOS8700_POLL_MAX 800 #define FXOS8700_POLL_MIN 100 |
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enum { MODE_2G = 0, MODE_4G, MODE_8G, }; |
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struct fxos8700_data_axis { short x; short y; short z; }; struct fxos8700_data { struct i2c_client *client; struct input_polled_dev *input_polled; struct miscdevice *acc_miscdev; struct miscdevice *mag_miscdev; atomic_t acc_delay; atomic_t mag_delay; atomic_t acc_active; atomic_t acc_active_poll; atomic_t mag_active_poll; atomic_t mag_active; atomic_t position; |
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atomic_t range; |
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}; static struct fxos8700_data *g_fxos8700_data; static int fxos8700_position_settings[8][3][3] = { { { 0, -1, 0}, { 1, 0, 0}, {0, 0, 1} }, { {-1, 0, 0}, { 0, -1, 0}, {0, 0, 1} }, { { 0, 1, 0}, {-1, 0, 0}, {0, 0, 1} }, { { 1, 0, 0}, { 0, 1, 0}, {0, 0, 1} }, { { 0, -1, 0}, {-1, 0, 0}, {0, 0, -1} }, { {-1, 0, 0}, { 0, 1, 0}, {0, 0, -1} }, { { 0, 1, 0}, { 1, 0, 0}, {0, 0, -1} }, { { 1, 0, 0}, { 0, -1, 0}, {0, 0, -1} }, }; static int fxos8700_data_convert(struct fxos8700_data_axis *axis_data, int position) { short rawdata[3], data[3]; int i, j; if (position < 0 || position > 7) position = 0; rawdata[0] = axis_data->x; rawdata[1] = axis_data->y; rawdata[2] = axis_data->z; for (i = 0; i < 3 ; i++) { data[i] = 0; for (j = 0; j < 3; j++) data[i] += rawdata[j] * fxos8700_position_settings[position][i][j]; } axis_data->x = data[0]; axis_data->y = data[1]; axis_data->z = data[2]; return 0; } static int fxos8700_change_mode(struct i2c_client *client, int type, int active) { u8 data; int acc_act, mag_act; struct fxos8700_data *pdata = i2c_get_clientdata(client); acc_act = atomic_read(&pdata->acc_active); mag_act = atomic_read(&pdata->mag_active); data = i2c_smbus_read_byte_data(client, FXOS8700_CTRL_REG1); if (type == FXOS8700_TYPE_ACC) acc_act = active; else mag_act = active; if (acc_act == FXOS8700_ACTIVED || mag_act == FXOS8700_ACTIVED) data |= 0x01; else data &= ~0x01; i2c_smbus_write_byte_data(client, FXOS8700_CTRL_REG1, data); return 0; } |
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static int fxos8700_change_range(struct i2c_client *client, int range) { int ret; ret = i2c_smbus_write_byte_data(client, FXOS8700_XYZ_DATA_CFG, range); return ret; } |
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static int fxos8700_set_odr(struct i2c_client *client, int type, int delay) { return 0; } static int fxos8700_device_init(struct i2c_client *client) { int result; |
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struct device_node *np = client->dev.of_node; |
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struct fxos8700_data *pdata = i2c_get_clientdata(client); |
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/* set interrupt pin as open-drain */ if (of_get_property(np, "interrupt-open-drain", NULL)) { result = i2c_smbus_write_byte_data(client, FXOS8700_CTRL_REG3, 0x01); if (result < 0) goto out; } |
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/* standby mode */ result = i2c_smbus_write_byte_data(client, FXOS8700_CTRL_REG1, 0x00); if (result < 0) goto out; result = i2c_smbus_write_byte_data(client, FXOS8700_M_CTRL_REG1, 0x1F); if (result < 0) goto out; result = i2c_smbus_write_byte_data(client, FXOS8700_M_CTRL_REG2, 0x5c); if (result < 0) goto out; result = i2c_smbus_write_byte_data(client, FXOS8700_CTRL_REG1, 0x03 << 3); if (result < 0) goto out; |
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result = i2c_smbus_write_byte_data(client, FXOS8700_XYZ_DATA_CFG, MODE_2G); if (result < 0) goto out; |
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atomic_set(&pdata->acc_active, FXOS8700_STANDBY); atomic_set(&pdata->mag_active, FXOS8700_STANDBY); atomic_set(&pdata->position, FXOS8700_POSITION_DEFAULT); |
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atomic_set(&pdata->range, MODE_2G); |
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return 0; out: dev_err(&client->dev, "Error when init fxos8700 device:(%d)", result); return result; } static int fxos8700_device_stop(struct i2c_client *client) { i2c_smbus_write_byte_data(client, FXOS8700_CTRL_REG1, 0x00); return 0; } static int fxos8700_read_data(struct i2c_client *client, struct fxos8700_data_axis *data, int type) { u8 tmp_data[FXOS8700_DATA_BUF_SIZE]; int ret; u8 reg; if (type == FXOS8700_TYPE_ACC) reg = FXOS8700_OUT_X_MSB; else reg = FXOS8700_M_OUT_X_MSB; ret = i2c_smbus_read_i2c_block_data(client, reg, FXOS8700_DATA_BUF_SIZE, tmp_data); if (ret < FXOS8700_DATA_BUF_SIZE) { dev_err(&client->dev, "i2c block read %s failed ", (type == FXOS8700_TYPE_ACC ? "acc" : "mag")); return -EIO; } data->x = ((tmp_data[0] << 8) & 0xff00) | tmp_data[1]; data->y = ((tmp_data[2] << 8) & 0xff00) | tmp_data[3]; data->z = ((tmp_data[4] << 8) & 0xff00) | tmp_data[5]; return 0; } static long fxos8700_acc_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { struct fxos8700_data *pdata = file->private_data; void __user *argp = (void __user *)arg; struct fxos8700_data_axis data; long ret = 0; short sdata[3]; int enable; int delay; int position; if (!pdata) { printk(KERN_ERR "fxos8700 struct datt point is NULL."); return -EFAULT; } switch (cmd) { case SENSOR_GET_MODEL_NAME: if (copy_to_user(argp, "FXOS8700 ACC", strlen("FXOS8700 ACC") + 1)) { printk(KERN_ERR "SENSOR_GET_MODEL_NAME copy_to_user failed."); ret = -EFAULT; } break; case SENSOR_GET_POWER_STATUS: enable = atomic_read(&pdata->acc_active); if (copy_to_user(argp, &enable, sizeof(int))) { printk(KERN_ERR "SENSOR_SET_POWER_STATUS copy_to_user failed."); ret = -EFAULT; } break; case SENSOR_SET_POWER_STATUS: if (copy_from_user(&enable, argp, sizeof(int))) { printk(KERN_ERR "SENSOR_SET_POWER_STATUS copy_to_user failed."); ret = -EFAULT; } if (pdata->client) { ret = fxos8700_change_mode(pdata->client, FXOS8700_TYPE_ACC, enable ? FXOS8700_ACTIVED : FXOS8700_STANDBY); if (!ret) atomic_set(&pdata->acc_active, enable); } break; case SENSOR_GET_DELAY_TIME: delay = atomic_read(&pdata->acc_delay); if (copy_to_user(argp, &delay, sizeof(delay))) { printk(KERN_ERR "SENSOR_GET_DELAY_TIME copy_to_user failed."); return -EFAULT; } break; case SENSOR_SET_DELAY_TIME: if (copy_from_user(&delay, argp, sizeof(int))) { printk(KERN_ERR "SENSOR_SET_DELAY_TIME copy_to_user failed."); ret = -EFAULT; } if (pdata->client && delay > 0 && delay <= 500) { ret = fxos8700_set_odr(pdata->client, FXOS8700_TYPE_ACC, delay); if (!ret) atomic_set(&pdata->acc_delay, delay); } break; case SENSOR_GET_RAW_DATA: position = atomic_read(&pdata->position); ret = fxos8700_read_data(pdata->client, &data, FXOS8700_TYPE_ACC); if (!ret) { fxos8700_data_convert(&data, position); sdata[0] = data.x; sdata[1] = data.y; sdata[2] = data.z; if (copy_to_user(argp, sdata, sizeof(sdata))) { printk(KERN_ERR "SENSOR_GET_RAW_DATA copy_to_user failed."); ret = -EFAULT; } } break; default: ret = -1; } return ret; } static int fxos8700_acc_open(struct inode *inode, struct file *file) { file->private_data = g_fxos8700_data; return nonseekable_open(inode, file); } static int fxos8700_acc_release(struct inode *inode, struct file *file) { /* note: releasing the wdt in NOWAYOUT-mode does not stop it */ return 0; } static const struct file_operations fxos8700_acc_fops = { .owner = THIS_MODULE, .open = fxos8700_acc_open, .release = fxos8700_acc_release, .unlocked_ioctl = fxos8700_acc_ioctl, }; /* mag char miscdevice */ static long fxos8700_mag_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { struct fxos8700_data *pdata = file->private_data; void __user *argp = (void __user *)arg; struct fxos8700_data_axis data; long ret = 0; short sdata[3]; int enable; int delay; int position; if (!pdata) { printk(KERN_ERR "fxos8700 struct datt point is NULL."); return -EFAULT; } switch (cmd) { case SENSOR_GET_MODEL_NAME: if (copy_to_user(argp, "FXOS8700 MAG", strlen("FXOS8700 MAG") + 1)) { printk(KERN_ERR "SENSOR_GET_MODEL_NAME copy_to_user failed."); ret = -EFAULT; } break; case SENSOR_GET_POWER_STATUS: enable = atomic_read(&pdata->mag_active); if (copy_to_user(argp, &enable, sizeof(int))) { printk(KERN_ERR "SENSOR_SET_POWER_STATUS copy_to_user failed."); ret = -EFAULT; } break; case SENSOR_SET_POWER_STATUS: if (copy_from_user(&enable, argp, sizeof(int))) { printk(KERN_ERR "SENSOR_SET_POWER_STATUS copy_to_user failed."); ret = -EFAULT; } if (pdata->client) { ret = fxos8700_change_mode(pdata->client, FXOS8700_TYPE_MAG, enable ? FXOS8700_ACTIVED : FXOS8700_STANDBY); if (!ret) atomic_set(&pdata->mag_active, enable); } break; case SENSOR_GET_DELAY_TIME: delay = atomic_read(&pdata->mag_delay); if (copy_to_user(argp, &delay, sizeof(delay))) { printk(KERN_ERR "SENSOR_GET_DELAY_TIME copy_to_user failed."); return -EFAULT; } break; case SENSOR_SET_DELAY_TIME: if (copy_from_user(&delay, argp, sizeof(int))) { printk(KERN_ERR "SENSOR_SET_DELAY_TIME copy_to_user failed."); ret = -EFAULT; } if (pdata->client && delay > 0 && delay <= 500) { ret = fxos8700_set_odr(pdata->client, FXOS8700_TYPE_MAG, delay); if (!ret) atomic_set(&pdata->mag_delay, delay); } break; case SENSOR_GET_RAW_DATA: position = atomic_read(&pdata->position); ret = fxos8700_read_data(pdata->client, &data, FXOS8700_TYPE_MAG); if (!ret) { fxos8700_data_convert(&data, position); sdata[0] = data.x; sdata[1] = data.y; sdata[2] = data.z; if (copy_to_user(argp, sdata, sizeof(sdata))) { printk(KERN_ERR "SENSOR_GET_RAW_DATA copy_to_user failed."); ret = -EFAULT; } } break; default: ret = -1; } return ret; } static int fxos8700_mag_open(struct inode *inode, struct file *file) { file->private_data = g_fxos8700_data; return nonseekable_open(inode, file); } static int fxos8700_mag_release(struct inode *inode, struct file *file) { /* note: releasing the wdt in NOWAYOUT-mode does not stop it */ return 0; } static const struct file_operations fxos8700_mag_fops = { .owner = THIS_MODULE, .open = fxos8700_mag_open, .release = fxos8700_mag_release, .unlocked_ioctl = fxos8700_mag_ioctl, }; static struct miscdevice fxos8700_acc_device = { .minor = MISC_DYNAMIC_MINOR, .name = "FreescaleAccelerometer", .fops = &fxos8700_acc_fops, }; static struct miscdevice fxos8700_mag_device = { .minor = MISC_DYNAMIC_MINOR, .name = "FreescaleMagnetometer", .fops = &fxos8700_mag_fops, }; static ssize_t fxos8700_enable_show(struct device *dev, struct device_attribute *attr, char *buf) { struct miscdevice *misc_dev = dev_get_drvdata(dev); struct fxos8700_data *pdata = g_fxos8700_data; int enable = 0; if (pdata->acc_miscdev == misc_dev) enable = atomic_read(&pdata->acc_active); if (pdata->mag_miscdev == misc_dev) enable = atomic_read(&pdata->mag_active); return sprintf(buf, "%d ", enable); } static ssize_t fxos8700_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct miscdevice *misc_dev = dev_get_drvdata(dev); struct fxos8700_data *pdata = g_fxos8700_data; struct i2c_client *client = pdata->client; unsigned long enable; int type; int ret; if (kstrtoul(buf, 10, &enable) < 0) return -EINVAL; if (misc_dev == pdata->acc_miscdev) type = FXOS8700_TYPE_ACC; if (misc_dev == pdata->mag_miscdev) type = FXOS8700_TYPE_MAG; enable = (enable > 0 ? FXOS8700_ACTIVED : FXOS8700_STANDBY); ret = fxos8700_change_mode(client, type, enable); if (!ret) { if (type == FXOS8700_TYPE_ACC) { atomic_set(&pdata->acc_active, enable); atomic_set(&pdata->acc_active_poll, enable); } else { atomic_set(&pdata->mag_active, enable); atomic_set(&pdata->mag_active_poll, enable); } } return count; } static ssize_t fxos8700_poll_delay_show(struct device *dev, struct device_attribute *attr, char *buf) { struct miscdevice *misc_dev = dev_get_drvdata(dev); struct fxos8700_data *pdata = g_fxos8700_data; int poll_delay = 0; if (pdata->acc_miscdev == misc_dev) poll_delay = atomic_read(&pdata->acc_delay); if (pdata->mag_miscdev == misc_dev) poll_delay = atomic_read(&pdata->mag_delay); return sprintf(buf, "%d ", poll_delay); } static ssize_t fxos8700_poll_delay_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct miscdevice *misc_dev = dev_get_drvdata(dev); struct fxos8700_data *pdata = g_fxos8700_data; struct i2c_client *client = pdata->client; unsigned long delay; int type; int ret; if (kstrtoul(buf, 10, &delay) < 0) return -EINVAL; if (misc_dev == pdata->acc_miscdev) type = FXOS8700_TYPE_ACC; if (misc_dev == pdata->mag_miscdev) type = FXOS8700_TYPE_MAG; ret = fxos8700_set_odr(client, type, delay); if (!ret) { if (type == FXOS8700_TYPE_ACC) atomic_set(&pdata->acc_delay, delay); else atomic_set(&pdata->mag_delay, delay); } return count; } static ssize_t fxos8700_position_show(struct device *dev, struct device_attribute *attr, char *buf) { struct fxos8700_data *pdata = g_fxos8700_data; unsigned long position = atomic_read(&pdata->position); return sprintf(buf, "%ld ", position); } static ssize_t fxos8700_position_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned long position; struct fxos8700_data *pdata = g_fxos8700_data; if (kstrtoul(buf, 10, &position) < 0) return -EINVAL; atomic_set(&pdata->position, position); return count; } |
6bb7b0d69 MLK-11218: misc: ... |
678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 |
static ssize_t fxos8700_range_show(struct device *dev, struct device_attribute *attr, char *buf) { struct fxos8700_data *pdata = g_fxos8700_data; unsigned long range = atomic_read(&pdata->range); return sprintf(buf, "%ld ", range); } static ssize_t fxos8700_range_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned long range; struct fxos8700_data *pdata = g_fxos8700_data; struct i2c_client *client = pdata->client; int ret; if (kstrtoul(buf, 10, &range) < 0) return -EINVAL; if (range == atomic_read(&pdata->range)) return count; if (atomic_read(&pdata->acc_active) | atomic_read(&pdata->mag_active)) printk(KERN_INFO "Pls set the sensor standby and then actived "); ret = fxos8700_change_range(client, range); if (!ret) atomic_set(&pdata->range, range); return count; } |
6d692eaae MLK-10835-2 misc:... |
712 713 714 |
static DEVICE_ATTR(enable, S_IWUSR | S_IRUGO, fxos8700_enable_show, fxos8700_enable_store); static DEVICE_ATTR(poll_delay, S_IWUSR | S_IRUGO, fxos8700_poll_delay_show, fxos8700_poll_delay_store); static DEVICE_ATTR(position, S_IWUSR | S_IRUGO, fxos8700_position_show, fxos8700_position_store); |
6bb7b0d69 MLK-11218: misc: ... |
715 |
static DEVICE_ATTR(range, S_IWUSR | S_IRUGO, fxos8700_range_show, fxos8700_range_store); |
6d692eaae MLK-10835-2 misc:... |
716 717 718 719 720 |
static struct attribute *fxos8700_attributes[] = { &dev_attr_enable.attr, &dev_attr_poll_delay.attr, &dev_attr_position.attr, |
6bb7b0d69 MLK-11218: misc: ... |
721 |
&dev_attr_range.attr, |
6d692eaae MLK-10835-2 misc:... |
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NULL }; static const struct attribute_group fxos8700_attr_group = { .attrs = fxos8700_attributes, }; static int fxos8700_register_sysfs_device(struct fxos8700_data *pdata) { struct miscdevice *misc_dev = NULL; int err = -1; /* register sysfs for acc */ misc_dev = pdata->acc_miscdev; err = sysfs_create_group(&misc_dev->this_device->kobj, &fxos8700_attr_group); if (err) goto out; /* register sysfs for mag */ misc_dev = pdata->mag_miscdev; err = sysfs_create_group(&misc_dev->this_device->kobj, &fxos8700_attr_group); if (err) goto err_register_sysfs; return 0; err_register_sysfs: misc_dev = pdata->acc_miscdev; sysfs_remove_group(&misc_dev->this_device->kobj, &fxos8700_attr_group); printk("reigster mag sysfs error "); out: printk("reigster acc sysfs error "); return err; } static int fxos8700_unregister_sysfs_device(struct fxos8700_data *pdata) { struct miscdevice *misc_dev; misc_dev = pdata->acc_miscdev; sysfs_remove_group(&misc_dev->this_device->kobj, &fxos8700_attr_group); misc_dev = pdata->mag_miscdev; sysfs_remove_group(&misc_dev->this_device->kobj, &fxos8700_attr_group); return 0; } static void fxos8700_report(struct input_polled_dev *dev, int type) { struct fxos8700_data_axis data; struct fxos8700_data *pdata = g_fxos8700_data; struct input_dev *idev = pdata->input_polled->input; int position; int ret; position = atomic_read(&pdata->position); ret = fxos8700_read_data(pdata->client, &data, type); if (!ret) { fxos8700_data_convert(&data, position); input_report_abs(idev, ABS_X, data.x); input_report_abs(idev, ABS_Y, data.y); input_report_abs(idev, ABS_Z, data.z); input_sync(idev); } } static void fxos8700_poll(struct input_polled_dev *dev) { struct fxos8700_data *pdata = g_fxos8700_data; int type; if (!(atomic_read(&pdata->acc_active_poll) || atomic_read(&pdata->mag_active_poll))) return; if (atomic_read(&pdata->acc_active_poll)) type = FXOS8700_TYPE_ACC; if (atomic_read(&pdata->mag_active_poll)) type =FXOS8700_TYPE_MAG; fxos8700_report(dev, type); } static int fxo8700_register_polled_device(struct fxos8700_data *pdata) { struct input_polled_dev *ipoll_dev; struct input_dev *idev; int error; ipoll_dev = input_allocate_polled_device(); if (!ipoll_dev) return -ENOMEM; ipoll_dev->private = pdata; ipoll_dev->poll = fxos8700_poll; ipoll_dev->poll_interval = FXOS8700_POLL_INTERVAL; ipoll_dev->poll_interval_min = FXOS8700_POLL_MIN; ipoll_dev->poll_interval_max = FXOS8700_POLL_MAX; idev = ipoll_dev->input; idev->name = FXOS8700_DRIVER; idev->id.bustype = BUS_I2C; idev->dev.parent = &pdata->client->dev; idev->evbit[0] = BIT_MASK(EV_ABS); input_set_abs_params(idev, ABS_X, ABSMIN_ACC_VAL, ABSMAX_ACC_VAL, 0, 0); input_set_abs_params(idev, ABS_Y, ABSMIN_ACC_VAL, ABSMAX_ACC_VAL, 0, 0); input_set_abs_params(idev, ABS_Z, ABSMIN_ACC_VAL, ABSMAX_ACC_VAL, 0, 0); error = input_register_polled_device(ipoll_dev); if (error) { input_free_polled_device(ipoll_dev); return error; } pdata->input_polled = ipoll_dev; return 0; } static int fxos8700_probe(struct i2c_client *client, const struct i2c_device_id *id) { int result, client_id; struct fxos8700_data *pdata; struct i2c_adapter *adapter; adapter = to_i2c_adapter(client->dev.parent); result = i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE | I2C_FUNC_SMBUS_BYTE_DATA); if (!result) goto err_out; client_id = i2c_smbus_read_byte_data(client, FXOS8700_WHO_AM_I); if (client_id != FXOS8700_DEVICE_ID && client_id != FXOS8700_PRE_DEVICE_ID) { dev_err(&client->dev, "read chip ID 0x%x is not equal to 0x%x or 0x%x ", result, FXOS8700_DEVICE_ID, FXOS8700_PRE_DEVICE_ID); result = -EINVAL; goto err_out; } pdata = kzalloc(sizeof(struct fxos8700_data), GFP_KERNEL); if (!pdata) { result = -ENOMEM; dev_err(&client->dev, "alloc data memory error! "); goto err_out; } g_fxos8700_data = pdata; pdata->client = client; atomic_set(&pdata->acc_delay, FXOS8700_DELAY_DEFAULT); atomic_set(&pdata->mag_delay, FXOS8700_DELAY_DEFAULT); i2c_set_clientdata(client, pdata); result = misc_register(&fxos8700_acc_device); if (result != 0) { printk(KERN_ERR "register acc miscdevice error"); goto err_regsiter_acc_misc; } pdata->acc_miscdev = &fxos8700_acc_device; result = misc_register(&fxos8700_mag_device); if (result != 0) { printk(KERN_ERR "register acc miscdevice error"); goto err_regsiter_mag_misc; } pdata->mag_miscdev = &fxos8700_mag_device; /* for debug */ if (client->irq <= 0) { result = fxo8700_register_polled_device(g_fxos8700_data); if (result) dev_err(&client->dev, "IRQ GPIO conf. error %d, error %d ", client->irq, result); } result = fxos8700_register_sysfs_device(pdata); if (result) { dev_err(&client->dev, "create device file failed! "); result = -EINVAL; goto err_register_sys; } fxos8700_device_init(client); printk("fxos8700 device driver probe successfully"); return 0; err_register_sys: misc_deregister(&fxos8700_mag_device); pdata->mag_miscdev = NULL; err_regsiter_mag_misc: misc_deregister(&fxos8700_acc_device); pdata->acc_miscdev = NULL; err_regsiter_acc_misc: i2c_set_clientdata(client, NULL); kfree(pdata); err_out: return result; } static int fxos8700_remove(struct i2c_client *client) { struct fxos8700_data *pdata = i2c_get_clientdata(client); if (!pdata) return 0; fxos8700_device_stop(client); if (client->irq <= 0) { input_unregister_polled_device(pdata->input_polled); input_free_polled_device(pdata->input_polled); } fxos8700_unregister_sysfs_device(pdata); misc_deregister(&fxos8700_acc_device); misc_deregister(&fxos8700_mag_device); kfree(pdata); return 0; } #ifdef CONFIG_PM_SLEEP static int fxos8700_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct fxos8700_data *pdata = i2c_get_clientdata(client); if (atomic_read(&pdata->acc_active) || atomic_read(&pdata->mag_active)) fxos8700_device_stop(client); return 0; } static int fxos8700_resume(struct device *dev) { int ret = 0; struct i2c_client *client = to_i2c_client(dev); struct fxos8700_data *pdata = i2c_get_clientdata(client); if (atomic_read(&pdata->acc_active)) fxos8700_change_mode(client, FXOS8700_TYPE_ACC, FXOS8700_ACTIVED); if (atomic_read(&pdata->mag_active)) fxos8700_change_mode(client, FXOS8700_TYPE_MAG, FXOS8700_ACTIVED); return ret; } #endif static const struct i2c_device_id fxos8700_id[] = { {"fxos8700", 0}, { /* sentinel */ } }; MODULE_DEVICE_TABLE(i2c, fxos8700_id); static SIMPLE_DEV_PM_OPS(fxos8700_pm_ops, fxos8700_suspend, fxos8700_resume); static struct i2c_driver fxos8700_driver = { .driver = { .name = FXOS8700_DRIVER, .owner = THIS_MODULE, .pm = &fxos8700_pm_ops, }, .probe = fxos8700_probe, .remove = fxos8700_remove, .id_table = fxos8700_id, }; module_i2c_driver(fxos8700_driver); MODULE_AUTHOR("Freescale Semiconductor, Inc."); MODULE_DESCRIPTION("FXOS8700 6-Axis Acc and Mag Combo Sensor driver"); MODULE_LICENSE("GPL"); |