Added missing tegra files.HEADmaster

1 files changed, 1081 insertions, 0 deletions

diff --git a/drivers/input/misc/cm3217.c b/drivers/input/misc/cm3217.c
new file mode 100644
index 00000000000..9c9b60d6961
--- /dev/null
+++ b/drivers/input/misc/cm3217.c
@@ -0,0 +1,1081 @@
+/* drivers/input/misc/cm3217.c - cm3217 optical sensors driver
+ *
+ * Copyright (C) 2011 Capella Microsystems Inc.
+ * Author: Frank Hsieh <pengyueh@gmail.com>
+ *
+ * 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 <linux/delay.h>
+#include <linux/earlysuspend.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/workqueue.h>
+#include <linux/irq.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/gpio.h>
+#include <linux/miscdevice.h>
+#include <linux/lightsensor.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+#include <linux/cm3217.h>
+#include <linux/wakelock.h>
+#include <linux/jiffies.h>
+#include <asm/mach-types.h>
+#include <asm/setup.h>
+
+#define D(x...)                 pr_info(x)
+
+#define I2C_RETRY_COUNT         10
+
+#define LS_POLLING_DELAY        500
+
+static void report_do_work(struct work_struct *w);
+static DECLARE_DELAYED_WORK(report_work, report_do_work);
+
+struct cm3217_info {
+        struct class *cm3217_class;
+        struct device *ls_dev;
+        struct input_dev *ls_input_dev;
+
+        struct early_suspend early_suspend;
+        struct i2c_client *i2c_client;
+        struct workqueue_struct *lp_wq;
+
+        int als_enable;
+        int als_enabled_before_suspend;
+        uint16_t *adc_table;
+        uint16_t cali_table[10];
+        int irq;
+        int ls_calibrate;
+        int (*power) (int, uint8_t);    /* power to the chip */
+
+        uint32_t als_kadc;
+        uint32_t als_gadc;
+        uint16_t golden_adc;
+
+        int lightsensor_opened;
+        int current_level;
+        uint16_t current_adc;
+        int polling_delay;
+};
+
+struct cm3217_info *lp_info;
+
+int enable_log;
+int fLevel = -1;
+
+static struct mutex als_enable_mutex, als_disable_mutex, als_get_adc_mutex;
+
+static int lightsensor_enable(struct cm3217_info *lpi);
+static int lightsensor_disable(struct cm3217_info *lpi);
+
+int32_t als_kadc;
+
+static int I2C_RxData(uint16_t slaveAddr, uint8_t *rxData, int length)
+{
+        uint8_t loop_i;
+
+        struct i2c_msg msgs[] = {
+                {
+                        .addr = slaveAddr,
+                        .flags = I2C_M_RD,
+                        .len = length,
+                        .buf = rxData,
+                },
+        };
+
+        for (loop_i = 0; loop_i < I2C_RETRY_COUNT; loop_i++) {
+                if (i2c_transfer(lp_info->i2c_client->adapter, msgs, 1) > 0)
+                        break;
+                msleep(10);
+        }
+
+        if (loop_i >= I2C_RETRY_COUNT) {
+                printk(KERN_ERR "[ERR][CM3217 error] %s retry over %d\n",
+                       __func__, I2C_RETRY_COUNT);
+                return -EIO;
+        }
+
+        return 0;
+}
+
+static int I2C_TxData(uint16_t slaveAddr, uint8_t *txData, int length)
+{
+        uint8_t loop_i;
+
+        struct i2c_msg msg[] = {
+                {
+                        .addr = slaveAddr,
+                        .flags = 0,
+                        .len = length,
+                        .buf = txData,
+                },
+        };
+
+        for (loop_i = 0; loop_i < I2C_RETRY_COUNT; loop_i++) {
+                if (i2c_transfer(lp_info->i2c_client->adapter, msg, 1) > 0)
+                        break;
+                msleep(10);
+        }
+
+        if (loop_i >= I2C_RETRY_COUNT) {
+                printk(KERN_ERR "[ERR][CM3217 error] %s retry over %d\n",
+                       __func__, I2C_RETRY_COUNT);
+                return -EIO;
+        }
+
+        return 0;
+}
+
+static int _cm3217_I2C_Read_Byte(uint16_t slaveAddr, uint8_t *pdata)
+{
+        uint8_t buffer = 0;
+        int ret = 0;
+
+        if (pdata == NULL)
+                return -EFAULT;
+
+        ret = I2C_RxData(slaveAddr, &buffer, 1);
+        if (ret < 0) {
+                pr_err("[ERR][CM3217 error]%s: I2C_RxData fail, slave addr: 0x%x\n",
+                       __func__, slaveAddr);
+                return ret;
+        }
+
+        *pdata = buffer;
+
+#if 0
+        /* Debug use */
+        printk(KERN_DEBUG "[CM3217] %s: I2C_RxData[0x%x] = 0x%x\n",
+               __func__, slaveAddr, buffer);
+#endif
+
+        return ret;
+}
+
+static int _cm3217_I2C_Write_Byte(uint16_t SlaveAddress, uint8_t data)
+{
+        char buffer[2];
+        int ret = 0;
+
+#if 0
+        /* Debug use */
+        printk(KERN_DEBUG
+               "[CM3217] %s: _cm3217_I2C_Write_Byte[0x%x, 0x%x, 0x%x]\n",
+               __func__, SlaveAddress, cmd, data);
+#endif
+
+        buffer[0] = data;
+
+        ret = I2C_TxData(SlaveAddress, buffer, 1);
+        if (ret < 0) {
+                pr_err("[ERR][CM3217 error]%s: I2C_TxData fail\n", __func__);
+                return -EIO;
+        }
+
+        return ret;
+}
+
+static int get_ls_adc_value(uint16_t *als_step, bool resume)
+{
+        uint8_t lsb, msb;
+        int ret = 0;
+        struct cm3217_info *lpi = lp_info;
+
+        if (als_step == NULL)
+                return -EFAULT;
+
+        /* Read ALS data: LSB */
+        ret = _cm3217_I2C_Read_Byte(ALS_R_LSB_addr, &lsb);
+        if (ret < 0) {
+                pr_err("[LS][CM3217 error]%s: _cm3217_I2C_Read_Byte LSB fail\n",
+                       __func__);
+                return -EIO;
+        }
+
+        /* Read ALS data: MSB */
+        ret = _cm3217_I2C_Read_Byte(ALS_R_MSB_addr, &msb);
+        if (ret < 0) {
+                pr_err("[LS][CM3217 error]%s: _cm3217_I2C_Read_Byte MSB fail\n",
+                       __func__);
+                return -EIO;
+        }
+
+        *als_step = (uint16_t) msb;
+        *als_step <<= 8;
+        *als_step |= (uint16_t) lsb;
+
+        D("[LS][CM3217] %s: raw adc = 0x%X\n", __func__, *als_step);
+
+        if (!lpi->ls_calibrate) {
+                *als_step = (*als_step) * lpi->als_gadc / lpi->als_kadc;
+                if (*als_step > 0xFFFF)
+                        *als_step = 0xFFFF;
+        }
+
+        return ret;
+}
+
+static void report_lsensor_input_event(struct cm3217_info *lpi, bool resume)
+{
+        uint16_t adc_value = 0;
+        int level = 0, i, ret = 0;
+
+        mutex_lock(&als_get_adc_mutex);
+
+        ret = get_ls_adc_value(&adc_value, resume);
+
+        if (lpi->ls_calibrate) {
+                for (i = 0; i < 10; i++) {
+                        if (adc_value <= (*(lpi->cali_table + i))) {
+                                level = i;
+                                if (*(lpi->cali_table + i))
+                                        break;
+                        }
+                        /* avoid i = 10, because 'cali_table' of size is 10 */
+                        if (i == 9) {
+                                level = i;
+                                break;
+                        }
+                }
+        } else {
+                for (i = 0; i < 10; i++) {
+                        if (adc_value <= (*(lpi->adc_table + i))) {
+                                level = i;
+                                if (*(lpi->adc_table + i))
+                                        break;
+                        }
+                        /* avoid i = 10, because 'cali_table' of size is 10 */
+                        if (i == 9) {
+                                level = i;
+                                break;
+                        }
+                }
+        }
+
+        if ((i == 0) || (adc_value == 0))
+                D("[LS][CM3217] %s: ADC=0x%03X, Level=%d, l_thd equal 0, "
+                  "h_thd = 0x%x\n", __func__, adc_value, level,
+                  *(lpi->cali_table + i));
+        else
+                D("[LS][CM3217] %s: ADC=0x%03X, Level=%d, l_thd = 0x%x, "
+                  "h_thd = 0x%x\n", __func__, adc_value, level,
+                  *(lpi->cali_table + (i - 1)) + 1, *(lpi->cali_table + i));
+
+        lpi->current_level = level;
+        lpi->current_adc = adc_value;
+
+        /*
+        D("[CM3217] %s: *(lpi->cali_table + (i - 1)) + 1 = 0x%X, "
+          "*(lpi->cali_table + i) = 0x%x\n", __func__,
+          *(lpi->cali_table + (i - 1)) + 1, *(lpi->cali_table + i));
+        */
+
+        if (fLevel >= 0) {
+                D("[LS][CM3217] L-sensor force level enable level=%d "
+                  "fLevel=%d\n", level, fLevel);
+                level = fLevel;
+        }
+
+        input_report_abs(lpi->ls_input_dev, ABS_MISC, level);
+        input_sync(lpi->ls_input_dev);
+
+        mutex_unlock(&als_get_adc_mutex);
+}
+
+static void report_do_work(struct work_struct *work)
+{
+        struct cm3217_info *lpi = lp_info;
+
+        if (enable_log)
+                D("[CM3217] %s\n", __func__);
+
+        report_lsensor_input_event(lpi, 0);
+
+        queue_delayed_work(lpi->lp_wq, &report_work, lpi->polling_delay);
+}
+
+static int als_power(int enable)
+{
+        struct cm3217_info *lpi = lp_info;
+
+        if (lpi->power)
+                lpi->power(LS_PWR_ON, 1);
+
+        return 0;
+}
+
+void lightsensor_set_kvalue(struct cm3217_info *lpi)
+{
+        if (!lpi) {
+                pr_err("[LS][CM3217 error]%s: ls_info is empty\n", __func__);
+                return;
+        }
+
+        D("[LS][CM3217] %s: ALS calibrated als_kadc=0x%x\n",
+          __func__, als_kadc);
+
+        if (als_kadc >> 16 == ALS_CALIBRATED)
+                lpi->als_kadc = als_kadc & 0xFFFF;
+        else {
+                lpi->als_kadc = 0;
+                D("[LS][CM3217] %s: no ALS calibrated\n", __func__);
+        }
+
+        if (lpi->als_kadc && lpi->golden_adc > 0) {
+                lpi->als_kadc = (lpi->als_kadc > 0 && lpi->als_kadc < 0x1000) ?
+                                lpi->als_kadc : lpi->golden_adc;
+                lpi->als_gadc = lpi->golden_adc;
+        } else {
+                lpi->als_kadc = 1;
+                lpi->als_gadc = 1;
+        }
+
+        D("[LS][CM3217] %s: als_kadc=0x%x, als_gadc=0x%x\n",
+          __func__, lpi->als_kadc, lpi->als_gadc);
+}
+
+static int lightsensor_update_table(struct cm3217_info *lpi)
+{
+        uint32_t tmpData[10];
+        int i;
+
+        for (i = 0; i < 10; i++) {
+                tmpData[i] = (uint32_t) (*(lpi->adc_table + i))
+                             * lpi->als_kadc / lpi->als_gadc;
+                if (tmpData[i] <= 0xFFFF)
+                        lpi->cali_table[i] = (uint16_t) tmpData[i];
+                else
+                        lpi->cali_table[i] = 0xFFFF;
+                D("[LS][CM3217] %s: Calibrated adc_table: data[%d], %x\n",
+                  __func__, i, lpi->cali_table[i]);
+        }
+
+        return 0;
+}
+
+static int lightsensor_enable(struct cm3217_info *lpi)
+{
+        int ret = 0;
+        uint8_t cmd = 0;
+
+        mutex_lock(&als_enable_mutex);
+
+        D("[LS][CM3217] %s\n", __func__);
+
+        cmd = (CM3217_ALS_IT_2_T | CM3217_ALS_BIT5_Default_1 |
+               CM3217_ALS_WDM_DEFAULT_1);
+        ret = _cm3217_I2C_Write_Byte(ALS_W_CMD1_addr, cmd);
+        if (ret < 0)
+                pr_err("[LS][CM3217 error]%s: set auto light sensor fail\n",
+                       __func__);
+        else {
+                msleep(50);     /* wait for 50 ms for the first report adc */
+
+                /* report an invalid value first to ensure we
+                 * trigger an event when adc_level is zero.
+                 */
+                input_report_abs(lpi->ls_input_dev, ABS_MISC, -1);
+                input_sync(lpi->ls_input_dev);
+                /* resume, IOCTL and DEVICE_ATTR */
+                report_lsensor_input_event(lpi, 1);
+                lpi->als_enable = 1;
+        }
+
+        queue_delayed_work(lpi->lp_wq, &report_work, lpi->polling_delay);
+        lpi->als_enable = 1;
+
+        mutex_unlock(&als_enable_mutex);
+
+        return ret;
+}
+
+static int lightsensor_disable(struct cm3217_info *lpi)
+{
+        int ret = 0;
+        char cmd = 0;
+
+        mutex_lock(&als_disable_mutex);
+
+        D("[LS][CM3217] %s\n", __func__);
+
+        cmd = (CM3217_ALS_IT_2_T | CM3217_ALS_BIT5_Default_1 |
+               CM3217_ALS_WDM_DEFAULT_1 | CM3217_ALS_SD);
+        ret = _cm3217_I2C_Write_Byte(ALS_W_CMD1_addr, cmd);
+        if (ret < 0)
+                pr_err("[LS][CM3217 error]%s: disable auto light sensor fail\n",
+                       __func__);
+        else {
+                lpi->als_enable = 0;
+        }
+
+        cancel_delayed_work(&report_work);
+        lpi->als_enable = 0;
+
+        mutex_unlock(&als_disable_mutex);
+
+        return ret;
+}
+
+static int lightsensor_open(struct inode *inode, struct file *file)
+{
+        struct cm3217_info *lpi = lp_info;
+        int rc = 0;
+
+        D("[LS][CM3217] %s\n", __func__);
+        if (lpi->lightsensor_opened) {
+                pr_err("[LS][CM3217 error]%s: already opened\n", __func__);
+                rc = -EBUSY;
+        }
+        lpi->lightsensor_opened = 1;
+
+        return rc;
+}
+
+static int lightsensor_release(struct inode *inode, struct file *file)
+{
+        struct cm3217_info *lpi = lp_info;
+
+        D("[LS][CM3217] %s\n", __func__);
+        lpi->lightsensor_opened = 0;
+
+        return 0;
+}
+
+static long lightsensor_ioctl(struct file *file, unsigned int cmd,
+                              unsigned long arg)
+{
+        int rc, val;
+        struct cm3217_info *lpi = lp_info;
+
+        /* D("[CM3217] %s cmd %d\n", __func__, _IOC_NR(cmd)); */
+
+        switch (cmd) {
+        case LIGHTSENSOR_IOCTL_ENABLE:
+                if (get_user(val, (unsigned long __user *)arg)) {
+                        rc = -EFAULT;
+                        break;
+                }
+                D("[LS][CM3217] %s LIGHTSENSOR_IOCTL_ENABLE, value = %d\n",
+                  __func__, val);
+                rc = val ? lightsensor_enable(lpi) : lightsensor_disable(lpi);
+                break;
+
+        case LIGHTSENSOR_IOCTL_GET_ENABLED:
+                val = lpi->als_enable;
+                D("[LS][CM3217] %s LIGHTSENSOR_IOCTL_GET_ENABLED, enabled %d\n",
+                  __func__, val);
+                rc = put_user(val, (unsigned long __user *)arg);
+                break;
+
+        default:
+                pr_err("[LS][CM3217 error]%s: invalid cmd %d\n",
+                       __func__, _IOC_NR(cmd));
+                rc = -EINVAL;
+        }
+
+        return rc;
+}
+
+static const struct file_operations lightsensor_fops = {
+        .owner = THIS_MODULE,
+        .open = lightsensor_open,
+        .release = lightsensor_release,
+        .unlocked_ioctl = lightsensor_ioctl
+};
+
+static struct miscdevice lightsensor_misc = {
+        .minor = MISC_DYNAMIC_MINOR,
+        .name = "lightsensor",
+        .fops = &lightsensor_fops
+};
+
+static ssize_t ls_adc_show(struct device *dev,
+                           struct device_attribute *attr, char *buf)
+{
+        int ret;
+        struct cm3217_info *lpi = lp_info;
+
+        D("[LS][CM3217] %s: ADC = 0x%04X, Level = %d\n",
+          __func__, lpi->current_adc, lpi->current_level);
+
+        ret = sprintf(buf, "ADC[0x%04X] => level %d\n",
+                      lpi->current_adc, lpi->current_level);
+
+        return ret;
+}
+
+static DEVICE_ATTR(ls_adc, 0664, ls_adc_show, NULL);
+
+static ssize_t ls_enable_show(struct device *dev,
+                              struct device_attribute *attr, char *buf)
+{
+        int ret = 0;
+        struct cm3217_info *lpi = lp_info;
+
+        ret = sprintf(buf, "Light sensor Auto Enable = %d\n", lpi->als_enable);
+
+        return ret;
+}
+
+static ssize_t ls_enable_store(struct device *dev,
+                               struct device_attribute *attr,
+                               const char *buf, size_t count)
+{
+        int ret = 0;
+        int ls_auto;
+        struct cm3217_info *lpi = lp_info;
+
+        ls_auto = -1;
+        sscanf(buf, "%d", &ls_auto);
+
+        if (ls_auto != 0 && ls_auto != 1)
+                return -EINVAL;
+
+        if (ls_auto)
+                ret = lightsensor_enable(lpi);
+        else
+                ret = lightsensor_disable(lpi);
+
+        D("[LS][CM3217] %s: lpi->als_enable = %d, lpi->ls_calibrate = %d, "
+          "ls_auto=%d\n", __func__, lpi->als_enable, lpi->ls_calibrate,
+          ls_auto);
+
+        if (ret < 0)
+                pr_err("[LS][CM3217 error]%s: set auto light sensor fail\n",
+                       __func__);
+
+        return count;
+}
+
+static DEVICE_ATTR(ls_auto, 0664, ls_enable_show, ls_enable_store);
+
+static ssize_t ls_kadc_show(struct device *dev,
+                            struct device_attribute *attr, char *buf)
+{
+        struct cm3217_info *lpi = lp_info;
+        int ret;
+
+        ret = sprintf(buf, "kadc = 0x%x", lpi->als_kadc);
+
+        return ret;
+}
+
+static ssize_t ls_kadc_store(struct device *dev,
+                             struct device_attribute *attr,
+                             const char *buf, size_t count)
+{
+        struct cm3217_info *lpi = lp_info;
+        int kadc_temp = 0;
+
+        sscanf(buf, "%d", &kadc_temp);
+
+        /* if (kadc_temp <= 0 || lpi->golden_adc <= 0) {
+                printk(KERN_ERR "[LS][CM3217 error] %s: kadc_temp=0x%x, "
+                       "als_gadc=0x%x\n", __func__, kadc_temp,
+                       lpi->golden_adc);
+                return -EINVAL;
+        } */
+
+        mutex_lock(&als_get_adc_mutex);
+
+        if (kadc_temp != 0) {
+                lpi->als_kadc = kadc_temp;
+                if (lpi->als_gadc != 0) {
+                        if (lightsensor_update_table(lpi) < 0)
+                                printk(KERN_ERR
+                                       "[LS][CM3217 error] %s: "
+                                       "update ls table fail\n", __func__);
+                } else {
+                        printk(KERN_INFO
+                               "[LS]%s: als_gadc =0x%x wait to be set\n",
+                               __func__, lpi->als_gadc);
+                }
+        } else {
+                printk(KERN_INFO "[LS]%s: als_kadc can't be set to zero\n",
+                       __func__);
+        }
+
+        mutex_unlock(&als_get_adc_mutex);
+
+        return count;
+}
+
+static DEVICE_ATTR(ls_kadc, 0664, ls_kadc_show, ls_kadc_store);
+
+static ssize_t ls_gadc_show(struct device *dev,
+                            struct device_attribute *attr, char *buf)
+{
+        struct cm3217_info *lpi = lp_info;
+        int ret;
+
+        ret = sprintf(buf, "gadc = 0x%x\n", lpi->als_gadc);
+
+        return ret;
+}
+
+static ssize_t ls_gadc_store(struct device *dev,
+                             struct device_attribute *attr,
+                             const char *buf, size_t count)
+{
+        struct cm3217_info *lpi = lp_info;
+        int gadc_temp = 0;
+
+        sscanf(buf, "%d", &gadc_temp);
+
+        /* if (gadc_temp <= 0 || lpi->golden_adc <= 0) {
+                printk(KERN_ERR "[LS][CM3217 error] %s: kadc_temp=0x%x, "
+                       "als_gadc=0x%x\n", __func__, kadc_temp,
+                       lpi->golden_adc);
+                return -EINVAL;
+        } */
+
+        mutex_lock(&als_get_adc_mutex);
+
+        if (gadc_temp != 0) {
+                lpi->als_gadc = gadc_temp;
+                if (lpi->als_kadc != 0) {
+                        if (lightsensor_update_table(lpi) < 0)
+                                printk(KERN_ERR
+                                       "[LS][CM3217 error] %s: "
+                                       "update ls table fail\n", __func__);
+                } else {
+                        printk(KERN_INFO
+                               "[LS]%s: als_kadc =0x%x wait to be set\n",
+                               __func__, lpi->als_kadc);
+                }
+        } else {
+                printk(KERN_INFO "[LS]%s: als_gadc can't be set to zero\n",
+                       __func__);
+        }
+
+        mutex_unlock(&als_get_adc_mutex);
+
+        return count;
+}
+
+static DEVICE_ATTR(ls_gadc, 0664, ls_gadc_show, ls_gadc_store);
+
+static ssize_t ls_adc_table_show(struct device *dev,
+                                 struct device_attribute *attr, char *buf)
+{
+        unsigned length = 0;
+        int i;
+
+        for (i = 0; i < 10; i++) {
+                length += sprintf(buf + length,
+                                  "[CM3217]Get adc_table[%d] =  0x%x ; %d, "
+                                  "Get cali_table[%d] =  0x%x ; %d,\n",
+                                  i, *(lp_info->adc_table + i),
+                                  *(lp_info->adc_table + i),
+                                  i, *(lp_info->cali_table + i),
+                                  *(lp_info->cali_table + i));
+        }
+
+        return length;
+}
+
+static ssize_t ls_adc_table_store(struct device *dev,
+                                  struct device_attribute *attr,
+                                  const char *buf, size_t count)
+{
+        struct cm3217_info *lpi = lp_info;
+        char *token[10];
+        unsigned long tempdata[10];
+        int i, r;
+
+        printk(KERN_INFO "[LS][CM3217]%s\n", buf);
+        for (i = 0; i < 10; i++) {
+                token[i] = strsep((char **)&buf, " ");
+                r = kstrtoul(token[i], 16, &tempdata[i]);
+                if (tempdata[i] < 1 || tempdata[i] > 0xffff || r) {
+                        printk(KERN_ERR
+                               "[LS][CM3217 error] adc_table[%d] = "
+                               "0x%lx Err\n", i, tempdata[i]);
+                        return count;
+                }
+        }
+
+        mutex_lock(&als_get_adc_mutex);
+
+        for (i = 0; i < 10; i++) {
+                lpi->adc_table[i] = tempdata[i];
+                printk(KERN_INFO
+                       "[LS][CM3217]Set lpi->adc_table[%d] =  0x%x\n",
+                       i, *(lp_info->adc_table + i));
+        }
+        if (lightsensor_update_table(lpi) < 0)
+                printk(KERN_ERR "[LS][CM3217 error] %s: update ls table fail\n",
+                       __func__);
+
+        mutex_unlock(&als_get_adc_mutex);
+
+        D("[LS][CM3217] %s\n", __func__);
+
+        return count;
+}
+
+static DEVICE_ATTR(ls_adc_table, 0664, ls_adc_table_show, ls_adc_table_store);
+
+static uint8_t ALS_CONF1;
+
+static ssize_t ls_conf1_show(struct device *dev,
+                             struct device_attribute *attr, char *buf)
+{
+        return sprintf(buf, "ALS_CONF1 = %x\n", ALS_CONF1);
+}
+
+static ssize_t ls_conf1_store(struct device *dev,
+                              struct device_attribute *attr,
+                              const char *buf, size_t count)
+{
+        int value = 0;
+
+        sscanf(buf, "0x%x", &value);
+
+        ALS_CONF1 = value;
+        printk(KERN_INFO "[LS]set ALS_CONF1 = %x\n", ALS_CONF1);
+        _cm3217_I2C_Write_Byte(ALS_W_CMD1_addr, ALS_CONF1);
+
+        return count;
+}
+
+static DEVICE_ATTR(ls_conf1, 0664, ls_conf1_show, ls_conf1_store);
+
+static uint8_t ALS_CONF2;
+static ssize_t ls_conf2_show(struct device *dev,
+                             struct device_attribute *attr, char *buf)
+{
+        return sprintf(buf, "ALS_CONF2 = %x\n", ALS_CONF2);
+}
+
+static ssize_t ls_conf2_store(struct device *dev,
+                              struct device_attribute *attr,
+                              const char *buf, size_t count)
+{
+        int value = 0;
+
+        sscanf(buf, "0x%x", &value);
+
+        ALS_CONF2 = value;
+        printk(KERN_INFO "[LS]set ALS_CONF2 = %x\n", ALS_CONF2);
+        _cm3217_I2C_Write_Byte(ALS_W_CMD2_addr, ALS_CONF2);
+
+        return count;
+}
+
+static DEVICE_ATTR(ls_conf2, 0664, ls_conf2_show, ls_conf2_store);
+
+static ssize_t ls_fLevel_show(struct device *dev,
+                              struct device_attribute *attr, char *buf)
+{
+        return sprintf(buf, "fLevel = %d\n", fLevel);
+}
+
+static ssize_t ls_fLevel_store(struct device *dev,
+                               struct device_attribute *attr,
+                               const char *buf, size_t count)
+{
+        struct cm3217_info *lpi = lp_info;
+        int value = 0;
+
+        sscanf(buf, "%d", &value);
+        (value >= 0) ? (value = min(value, 10)) : (value = max(value, -1));
+        fLevel = value;
+
+        input_report_abs(lpi->ls_input_dev, ABS_MISC, fLevel);
+        input_sync(lpi->ls_input_dev);
+
+        printk(KERN_INFO "[LS]set fLevel = %d\n", fLevel);
+
+        msleep(1000);
+        fLevel = -1;
+
+        return count;
+}
+
+static DEVICE_ATTR(ls_flevel, 0664, ls_fLevel_show, ls_fLevel_store);
+
+static int lightsensor_setup(struct cm3217_info *lpi)
+{
+        int ret;
+
+        lpi->ls_input_dev = input_allocate_device();
+        if (!lpi->ls_input_dev) {
+                pr_err("[LS][CM3217 error]%s: "
+                       "could not allocate ls input device\n", __func__);
+                return -ENOMEM;
+        }
+        lpi->ls_input_dev->name = "cm3217-ls";
+        set_bit(EV_ABS, lpi->ls_input_dev->evbit);
+        input_set_abs_params(lpi->ls_input_dev, ABS_MISC, 0, 9, 0, 0);
+
+        ret = input_register_device(lpi->ls_input_dev);
+        if (ret < 0) {
+                pr_err("[LS][CM3217 error]%s: "
+                       "can not register ls input device\n", __func__);
+                goto err_free_ls_input_device;
+        }
+
+        ret = misc_register(&lightsensor_misc);
+        if (ret < 0) {
+                pr_err("[LS][CM3217 error]%s: "
+                       "can not register ls misc device\n", __func__);
+                goto err_unregister_ls_input_device;
+        }
+
+        return ret;
+
+err_unregister_ls_input_device:
+        input_unregister_device(lpi->ls_input_dev);
+err_free_ls_input_device:
+        input_free_device(lpi->ls_input_dev);
+        return ret;
+}
+
+static int cm3217_setup(struct cm3217_info *lpi)
+{
+        int ret = 0;
+
+        als_power(1);
+        msleep(5);
+
+        ret = _cm3217_I2C_Write_Byte(ALS_W_CMD2_addr,
+                                     CM3217_ALS_WDM_DEFAULT_1
+                                     | CM3217_ALS_IT_2_T
+                                     | CM3217_ALS_BIT5_Default_1);
+        if (ret < 0)
+                return ret;
+
+        ret = _cm3217_I2C_Write_Byte(ALS_W_CMD2_addr, CM3217_ALS_IT_100ms);
+        msleep(10);
+
+        return ret;
+}
+
+static void cm3217_early_suspend(struct early_suspend *h)
+{
+        struct cm3217_info *lpi = lp_info;
+
+        D("[LS][CM3217] %s\n", __func__);
+
+        lpi->als_enabled_before_suspend = lpi->als_enable;
+        if (lpi->als_enable)
+                lightsensor_disable(lpi);
+}
+
+static void cm3217_late_resume(struct early_suspend *h)
+{
+        struct cm3217_info *lpi = lp_info;
+
+        D("[LS][CM3217] %s\n", __func__);
+
+        if (lpi->als_enabled_before_suspend)
+                lightsensor_enable(lpi);
+}
+
+static int cm3217_probe(struct i2c_client *client,
+                        const struct i2c_device_id *id)
+{
+        int ret = 0;
+        struct cm3217_info *lpi;
+        struct cm3217_platform_data *pdata;
+
+        D("[CM3217] %s\n", __func__);
+
+        lpi = kzalloc(sizeof(struct cm3217_info), GFP_KERNEL);
+        if (!lpi)
+                return -ENOMEM;
+
+        /* D("[CM3217] %s: client->irq = %d\n", __func__, client->irq); */
+
+        lpi->i2c_client = client;
+        pdata = client->dev.platform_data;
+        if (!pdata) {
+                pr_err("[CM3217 error]%s: Assign platform_data error!!\n",
+                       __func__);
+                ret = -EBUSY;
+                goto err_platform_data_null;
+        }
+
+        lpi->irq = client->irq;
+
+        i2c_set_clientdata(client, lpi);
+        lpi->adc_table = pdata->levels;
+        lpi->golden_adc = pdata->golden_adc;
+        lpi->power = pdata->power;
+
+        lpi->polling_delay = msecs_to_jiffies(LS_POLLING_DELAY);
+
+        lp_info = lpi;
+
+        mutex_init(&als_enable_mutex);
+        mutex_init(&als_disable_mutex);
+        mutex_init(&als_get_adc_mutex);
+
+        ret = lightsensor_setup(lpi);
+        if (ret < 0) {
+                pr_err("[LS][CM3217 error]%s: lightsensor_setup error!!\n",
+                       __func__);
+                goto err_lightsensor_setup;
+        }
+
+        /* SET LUX STEP FACTOR HERE
+         * if adc raw value one step = 0.3 lux
+         * the following will set the factor 0.3 = 3/10
+         * and lpi->golden_adc = 3;
+         * set als_kadc = (ALS_CALIBRATED <<16) | 10; */
+
+        als_kadc = (ALS_CALIBRATED << 16) | 10;
+        lpi->golden_adc = 3;
+
+        /* ls calibrate always set to 1 */
+        lpi->ls_calibrate = 1;
+
+        lightsensor_set_kvalue(lpi);
+        ret = lightsensor_update_table(lpi);
+        if (ret < 0) {
+                pr_err("[LS][CM3217 error]%s: update ls table fail\n",
+                       __func__);
+                goto err_lightsensor_update_table;
+        }
+
+        lpi->lp_wq = create_singlethread_workqueue("cm3217_wq");
+        if (!lpi->lp_wq) {
+                pr_err("[CM3217 error]%s: can't create workqueue\n", __func__);
+                ret = -ENOMEM;
+                goto err_create_singlethread_workqueue;
+        }
+
+        ret = cm3217_setup(lpi);
+        if (ret < 0) {
+                pr_err("[ERR][CM3217 error]%s: cm3217_setup error!\n",
+                       __func__);
+                goto err_cm3217_setup;
+        }
+
+        lpi->cm3217_class = class_create(THIS_MODULE, "optical_sensors");
+        if (IS_ERR(lpi->cm3217_class)) {
+                ret = PTR_ERR(lpi->cm3217_class);
+                lpi->cm3217_class = NULL;
+                goto err_create_class;
+        }
+
+        lpi->ls_dev = device_create(lpi->cm3217_class,
+                                    NULL, 0, "%s", "lightsensor");
+        if (unlikely(IS_ERR(lpi->ls_dev))) {
+                ret = PTR_ERR(lpi->ls_dev);
+                lpi->ls_dev = NULL;
+                goto err_create_ls_device;
+        }
+
+        /* register the attributes */
+        ret = device_create_file(lpi->ls_dev, &dev_attr_ls_adc);
+        if (ret)
+                goto err_create_ls_device_file;
+
+        /* register the attributes */
+        ret = device_create_file(lpi->ls_dev, &dev_attr_ls_auto);
+        if (ret)
+                goto err_create_ls_device_file;
+
+        /* register the attributes */
+        ret = device_create_file(lpi->ls_dev, &dev_attr_ls_kadc);
+        if (ret)
+                goto err_create_ls_device_file;
+
+        ret = device_create_file(lpi->ls_dev, &dev_attr_ls_gadc);
+        if (ret)
+                goto err_create_ls_device_file;
+
+        ret = device_create_file(lpi->ls_dev, &dev_attr_ls_adc_table);
+        if (ret)
+                goto err_create_ls_device_file;
+
+        ret = device_create_file(lpi->ls_dev, &dev_attr_ls_conf1);
+        if (ret)
+                goto err_create_ls_device_file;
+
+        ret = device_create_file(lpi->ls_dev, &dev_attr_ls_conf2);
+        if (ret)
+                goto err_create_ls_device_file;
+
+        ret = device_create_file(lpi->ls_dev, &dev_attr_ls_flevel);
+        if (ret)
+                goto err_create_ls_device_file;
+
+        lpi->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1;
+        lpi->early_suspend.suspend = cm3217_early_suspend;
+        lpi->early_suspend.resume = cm3217_late_resume;
+        register_early_suspend(&lpi->early_suspend);
+
+        lpi->als_enable = 0;
+        lpi->als_enabled_before_suspend = 0;
+        D("[CM3217] %s: Probe success!\n", __func__);
+
+        return ret;
+
+err_create_ls_device_file:
+        device_unregister(lpi->ls_dev);
+err_create_ls_device:
+        class_destroy(lpi->cm3217_class);
+err_create_class:
+err_cm3217_setup:
+        destroy_workqueue(lpi->lp_wq);
+        mutex_destroy(&als_enable_mutex);
+        mutex_destroy(&als_disable_mutex);
+        mutex_destroy(&als_get_adc_mutex);
+        input_unregister_device(lpi->ls_input_dev);
+        input_free_device(lpi->ls_input_dev);
+err_create_singlethread_workqueue:
+err_lightsensor_update_table:
+        misc_deregister(&lightsensor_misc);
+err_lightsensor_setup:
+err_platform_data_null:
+        kfree(lpi);
+        return ret;
+}
+
+static const struct i2c_device_id cm3217_i2c_id[] = {
+        {CM3217_I2C_NAME, 0},
+        {}
+};
+
+static struct i2c_driver cm3217_driver = {
+        .id_table = cm3217_i2c_id,
+        .probe = cm3217_probe,
+        .driver = {
+                .name = CM3217_I2C_NAME,
+                .owner = THIS_MODULE,
+        },
+};
+
+static int __init cm3217_init(void)
+{
+        return i2c_add_driver(&cm3217_driver);
+}
+
+static void __exit cm3217_exit(void)
+{
+        i2c_del_driver(&cm3217_driver);
+}
+
+module_init(cm3217_init);
+module_exit(cm3217_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("CM3217 Driver");
+MODULE_AUTHOR("Frank Hsieh <pengyueh@gmail.com>");