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taos.c
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taos.c
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/******************************************************************
*File Name: taos.c *
*Description: Linux device driver for Taos ambient light and *
* proximity sensors. *
*******************************************************************
Geschichte:
Wenn Wer Was Tag
2011-02-19 wangzy Update ALS und prox source
******************************************************************/
// includes
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/cdev.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/hwmon.h>
#include <linux/timer.h>
#include <asm/uaccess.h>
#include <asm/errno.h>
#include <asm/delay.h>
#include <linux/irq.h>
#include <asm/gpio.h>
#include <linux/i2c/taos_common.h>
#include <linux/input.h>
#include <linux/miscdevice.h>
#include <linux/wakelock.h>
#define TAOS_INT_GPIO 42
#define TAOS_TAG "[taos]"
// device name/id/address/counts
#define TAOS_DEVICE_NAME "taos"
//#define TAOS_DEVICE_ID "tritonFN"
#define TAOS_DEVICE_ID "taos"
#define TAOS_ID_NAME_SIZE 10
#define TAOS_TRITON_CHIPIDVAL 0x00
#define TAOS_TRITON_MAXREGS 32
#define TAOS_DEVICE_ADDR1 0x29
#define TAOS_DEVICE_ADDR2 0x39
#define TAOS_DEVICE_ADDR3 0x49
#define TAOS_MAX_NUM_DEVICES 3
#define TAOS_MAX_DEVICE_REGS 32
#define I2C_MAX_ADAPTERS 8
// TRITON register offsets
#define TAOS_TRITON_CNTRL 0x00
#define TAOS_TRITON_ALS_TIME 0X01
#define TAOS_TRITON_PRX_TIME 0x02
#define TAOS_TRITON_WAIT_TIME 0x03
#define TAOS_TRITON_ALS_MINTHRESHLO 0X04
#define TAOS_TRITON_ALS_MINTHRESHHI 0X05
#define TAOS_TRITON_ALS_MAXTHRESHLO 0X06
#define TAOS_TRITON_ALS_MAXTHRESHHI 0X07
#define TAOS_TRITON_PRX_MINTHRESHLO 0X08
#define TAOS_TRITON_PRX_MINTHRESHHI 0X09
#define TAOS_TRITON_PRX_MAXTHRESHLO 0X0A
#define TAOS_TRITON_PRX_MAXTHRESHHI 0X0B
#define TAOS_TRITON_INTERRUPT 0x0C
#define TAOS_TRITON_PRX_CFG 0x0D
#define TAOS_TRITON_PRX_COUNT 0x0E
#define TAOS_TRITON_GAIN 0x0F
#define TAOS_TRITON_REVID 0x11
#define TAOS_TRITON_CHIPID 0x12
#define TAOS_TRITON_STATUS 0x13
#define TAOS_TRITON_ALS_CHAN0LO 0x14
#define TAOS_TRITON_ALS_CHAN0HI 0x15
#define TAOS_TRITON_ALS_CHAN1LO 0x16
#define TAOS_TRITON_ALS_CHAN1HI 0x17
#define TAOS_TRITON_PRX_LO 0x18
#define TAOS_TRITON_PRX_HI 0x19
#define TAOS_TRITON_TEST_STATUS 0x1F
// Triton cmd reg masks
#define TAOS_TRITON_CMD_REG 0X80
#define TAOS_TRITON_CMD_BYTE_RW 0x00
#define TAOS_TRITON_CMD_WORD_BLK_RW 0x20
#define TAOS_TRITON_CMD_SPL_FN 0x60
#define TAOS_TRITON_CMD_PROX_INTCLR 0X05
#define TAOS_TRITON_CMD_ALS_INTCLR 0X06
#define TAOS_TRITON_CMD_PROXALS_INTCLR 0X07
#define TAOS_TRITON_CMD_TST_REG 0X08
#define TAOS_TRITON_CMD_USER_REG 0X09
// Triton cntrl reg masks
#define TAOS_TRITON_CNTL_PROX_INT_ENBL 0X20
#define TAOS_TRITON_CNTL_ALS_INT_ENBL 0X10
#define TAOS_TRITON_CNTL_WAIT_TMR_ENBL 0X08
#define TAOS_TRITON_CNTL_PROX_DET_ENBL 0X04
#define TAOS_TRITON_CNTL_ADC_ENBL 0x02
#define TAOS_TRITON_CNTL_PWRON 0x01
// Triton status reg masks
#define TAOS_TRITON_STATUS_ADCVALID 0x01
#define TAOS_TRITON_STATUS_PRXVALID 0x02
#define TAOS_TRITON_STATUS_ADCINTR 0x10
#define TAOS_TRITON_STATUS_PRXINTR 0x20
// lux constants
#define TAOS_MAX_LUX 65535000
#define TAOS_SCALE_MILLILUX 3
#define TAOS_FILTER_DEPTH 3
// forward declarations
static int taos_probe(struct i2c_client *clientp, const struct i2c_device_id *idp);
static int taos_remove(struct i2c_client *client);
static int taos_open(struct inode *inode, struct file *file);
static int taos_release(struct inode *inode, struct file *file);
static int taos_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg);
static int taos_read(struct file *file, char *buf, size_t count, loff_t *ppos);
static int taos_write(struct file *file, const char *buf, size_t count, loff_t *ppos);
static loff_t taos_llseek(struct file *file, loff_t offset, int orig);
static int taos_get_lux(void);
static int taos_lux_filter(int raw_lux);
static int taos_device_name(unsigned char *bufp, char **device_name);
static int taos_prox_poll(struct taos_prox_info *prxp);
//static void taos_prox_poll_timer_func(unsigned long param);
//static void taos_prox_poll_timer_start(void);
//static void taos_als_work(struct work_struct *w);
static void do_taos_work(struct work_struct *w);
static void taos_report_value(int mask);
static int calc_distance(int value);
static int enable_light_and_proximity(int mask);
static void taos_chip_diff_settings(void);
static struct wake_lock taos_wake_lock;
static int light_on=0;
static int prox_on = 0;
enum taos_chip_type {
TSL2771 = 0,
TMD2771,
};
struct alsprox_data {
struct input_dev *input_dev;
};
static struct alsprox_data *light;
static struct alsprox_data *proximity;
// first device number
static dev_t taos_dev_number;
// class structure for this device
struct class *taos_class;
// module device table
static struct i2c_device_id taos_idtable[] = {
{TAOS_DEVICE_ID, 0},
{}
};
MODULE_DEVICE_TABLE(i2c, taos_idtable);
// board and address info
struct i2c_board_info taos_board_info[] = {
{I2C_BOARD_INFO(TAOS_DEVICE_ID, TAOS_DEVICE_ADDR1),},
{I2C_BOARD_INFO(TAOS_DEVICE_ID, TAOS_DEVICE_ADDR2),},
{I2C_BOARD_INFO(TAOS_DEVICE_ID, TAOS_DEVICE_ADDR3),},
};
unsigned short const taos_addr_list[4] = {TAOS_DEVICE_ADDR1, TAOS_DEVICE_ADDR2, TAOS_DEVICE_ADDR3, I2C_CLIENT_END};
// client and device
struct i2c_client *my_clientp;
struct i2c_client *bad_clientp[TAOS_MAX_NUM_DEVICES];
//static int num_bad = 0;
//static int device_found = 0;
// driver definition
static struct i2c_driver taos_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "taos",
},
.id_table = taos_idtable,
.probe = taos_probe,
.remove = __devexit_p(taos_remove),
};
struct taos_intr_data {
int int_gpio;
int irq;
};
// per-device data
struct taos_data {
struct i2c_client *client;
struct cdev cdev;
unsigned int addr;
char taos_id;
char taos_name[TAOS_ID_NAME_SIZE];
struct semaphore update_lock;
char valid;
unsigned long last_updated;
struct taos_intr_data *pdata;
struct work_struct taos_work;
enum taos_chip_type chip_type;
} *taos_datap;
static struct taos_intr_data taos_irq= {
.int_gpio = TAOS_INT_GPIO,
.irq = MSM_GPIO_TO_INT(TAOS_INT_GPIO),
};
// file operations
static struct file_operations taos_fops = {
.owner = THIS_MODULE,
.open = taos_open,
.release = taos_release,
.read = taos_read,
.write = taos_write,
.llseek = taos_llseek,
.ioctl = taos_ioctl,
};
// device configuration
struct taos_cfg *taos_cfgp;
static u32 calibrate_target_param = 300000;
#if defined(CONFIG_MACH_BLADE)
static u16 als_time_param = 100;
#else
static u16 als_time_param = 27;
#endif
static u16 scale_factor_param = 1;
static u8 filter_history_param = 3;
static u8 filter_count_param = 1;
static u8 gain_param = 1;
#if defined(CONFIG_MACH_BLADE)
static u16 gain_trim_param = 512;
#elif defined(CONFIG_MACH_JOE)
static u16 gain_trim_param = 25;
#elif defined(CONFIG_MACH_SKATE)
static u16 gain_trim_param = 240;
#elif defined(CONFIG_MACH_ROAMER)
static u16 gain_trim_param = 5;
#elif defined(CONFIG_MACH_BLADE2)
static u16 gain_trim_param = 100;
#else
static u16 gain_trim_param = 25; //this value is set according to specific device
#endif
#if defined(CONFIG_MACH_BLADE)
static u16 prox_threshold_hi_param = 8000;
static u16 prox_threshold_lo_param = 8500;
#elif defined(CONFIG_MACH_SKATE)
static u16 prox_threshold_hi_param = 600;
static u16 prox_threshold_lo_param = 500;
#else
static u16 prox_threshold_hi_param = 1023;
static u16 prox_threshold_lo_param = 1023;
#endif
#if defined(CONFIG_MACH_BLADE)
static u8 prox_int_time_param = 0xEE;
static u8 prox_adc_time_param = 0xEE;
static u8 prox_wait_time_param = 0xF6;
#else
static u8 prox_int_time_param = 0xF6;
static u8 prox_adc_time_param = 0xFF;
static u8 prox_wait_time_param = 0xFF;
#endif
static u8 prox_intr_filter_param = 0x00;
static u8 prox_config_param = 0x00;
static u8 prox_pulse_cnt_param = 0x10;
static u8 prox_gain_param = 0x20;
// device reg init values
u8 taos_triton_reg_init[16] = {0x00,0xFF,0XFF,0XFF,0X00,0X00,0XFF,0XFF,0X00,0X00,0XFF,0XFF,0X00,0X00,0X00,0X00};
//
static u16 als_intr_threshold_hi_param = 0;
static u16 als_intr_threshold_lo_param = 0;
int g_nlux = 0;
//static int AlsorProx=0;
// prox info
struct taos_prox_info prox_cal_info[20];
struct taos_prox_info prox_cur_info;
struct taos_prox_info *prox_cur_infop = &prox_cur_info;
//static u8 prox_history_hi = 0;
//static u8 prox_history_lo = 0;
//static struct timer_list prox_poll_timer;
static int device_released = 0;
static u16 sat_als = 0;
static u16 sat_prox = 0;
// lux time scale
struct time_scale_factor {
u16 numerator;
u16 denominator;
u16 saturation;
};
struct time_scale_factor TritonTime = {1, 0, 0};
struct time_scale_factor *lux_timep = &TritonTime;
// gain table
u8 taos_triton_gain_table[] = {1, 8, 16, 120};
// lux data
struct lux_data {
u16 ratio;
u16 clear;
u16 ir;
};
struct lux_data TritonFN_lux_data[] = {
{ 9830, 8320, 15360 },
{ 12452, 10554, 22797 },
{ 14746, 6234, 11430 },
{ 17695, 3968, 6400 },
{ 0, 0, 0 }
};
struct lux_data *lux_tablep = TritonFN_lux_data;
static int lux_history[TAOS_FILTER_DEPTH] = {-ENODATA, -ENODATA, -ENODATA};
/* -----------------------------*
* config gpio for intr utility *
*------------------------------*/
int taos_config_int_gpio(int int_gpio)
{
int rc=0;
uint32_t gpio_config_data = GPIO_CFG(int_gpio, 0, GPIO_INPUT, GPIO_PULL_UP, GPIO_2MA);
rc = gpio_request(int_gpio, "gpio_sensor");
if (rc) {
printk(TAOS_TAG "%s: gpio_request(%#x)=%d\n",
__func__, int_gpio, rc);
return rc;
}
rc = gpio_tlmm_config(gpio_config_data, GPIO_ENABLE);
if (rc) {
printk(TAOS_TAG "%s: gpio_tlmm_config(%#x)=%d\n",
__func__, gpio_config_data, rc);
return rc;
}
mdelay(1);
rc = gpio_direction_input(int_gpio);
if (rc) {
printk(TAOS_TAG "%s: gpio_direction_input(%#x)=%d\n",
__func__, int_gpio, rc);
return rc;
}
return 0;
}
/* ----------------------*
* taos interrupt function *
*-----------------------*/
static irqreturn_t taos_interrupt(int irq, void *data)
{
//printk(TAOS_TAG "taos_interrupt\n");
disable_irq_nosync(taos_datap->pdata->irq);
schedule_work(&taos_datap->taos_work);
return IRQ_HANDLED;
}
static void do_taos_work(struct work_struct *w)
{
int ret =0;
//int prx_hi, prx_lo;
u16 status = 0;
if ((ret = (i2c_smbus_write_byte(taos_datap->client, (TAOS_TRITON_CMD_REG | 0x13)))) < 0) {
goto read_reg_fail;
}
status = i2c_smbus_read_byte(taos_datap->client);
//als interrupt
if(((status & 0x10) != 0)&&((status & 0x20)==0))
{
g_nlux = taos_get_lux();
//clear intr for als intr case
if ((ret = (i2c_smbus_write_byte(taos_datap->client, (TAOS_TRITON_CMD_REG|TAOS_TRITON_CMD_SPL_FN|TAOS_TRITON_CMD_PROXALS_INTCLR)))) < 0) {
printk(KERN_CRIT "TAOS: i2c_smbus_write_byte failed in clear als interrupt\n");
}
if(g_nlux>=0)
taos_report_value(0);
}
//prox interrupt
if((status & 0x20)!=0)
{
//printk(TAOS_TAG "taos_interrupt\n");
if((ret = taos_prox_poll(prox_cur_infop))<0){
printk(KERN_CRIT "TAOS: get prox poll failed in taos interrupt()\n");
if(ret==-ENODATA)
goto turn_screen_on;
}
if(prox_cur_infop->prox_data > taos_cfgp->prox_threshold_hi)
{
if ((ret = (i2c_smbus_write_word_data(taos_datap->client, (0xA0 | TAOS_TRITON_PRX_MAXTHRESHLO),sat_prox))) < 0) {
pr_crit(TAOS_TAG "i2c_smbus_write_byte() to TAOS_TRITON_PRX_MAXTHRESHLO\n");
}
if ((ret = (i2c_smbus_write_word_data(taos_datap->client, (0xA0 | TAOS_TRITON_PRX_MINTHRESHLO),taos_cfgp->prox_threshold_lo))) < 0) {
pr_crit(TAOS_TAG "i2c_smbus_write_byte() to TAOS_TRITON_PRX_MINTHRESHLO\n");
}
prox_cur_infop->prox_event = 1;
//pr_crit(TAOS_TAG "screen off:prox_cur_infop->prox_data=%d\n",prox_cur_infop->prox_data);
}
else if(prox_cur_infop->prox_data < taos_cfgp->prox_threshold_lo)
turn_screen_on:
{
if ((ret = (i2c_smbus_write_word_data(taos_datap->client, (0xA0 | TAOS_TRITON_PRX_MAXTHRESHLO),taos_cfgp->prox_threshold_hi))) < 0) {
pr_crit(TAOS_TAG "i2c_smbus_write_byte() to TAOS_TRITON_PRX_MAXTHRESHLO\n");
}
if ((ret = (i2c_smbus_write_word_data(taos_datap->client, (0xA0 | TAOS_TRITON_PRX_MINTHRESHLO),0))) < 0) {
pr_crit(TAOS_TAG "i2c_smbus_write_byte() to TAOS_TRITON_PRX_MINTHRESHLO\n");
}
prox_cur_infop->prox_event = 0;
//pr_crit(TAOS_TAG "screen on:prox_cur_infop->prox_data=%d\n",prox_cur_infop->prox_data);
}
if ((ret = (i2c_smbus_write_byte(taos_datap->client, (TAOS_TRITON_CMD_REG|TAOS_TRITON_CMD_SPL_FN|TAOS_TRITON_CMD_PROXALS_INTCLR)))) < 0) {
pr_crit(TAOS_TAG "i2c_smbus_write_byte failed in clear interrupt\n");
}
taos_report_value(1);
}
read_reg_fail:
enable_irq(taos_datap->pdata->irq);
return;
}
/*calc_distance, using prox value*/
static int calc_distance(int value)
{
int temp=0;
if(prox_cur_infop->prox_event == 1)
//temp=4-((value-(taos_cfgp->prox_threshold_lo))/3000);
temp=4-((value-(taos_cfgp->prox_threshold_lo))/((sat_prox-(taos_cfgp->prox_threshold_lo))/4));
else if(prox_cur_infop->prox_event == 0)
temp=5;
return temp;
}
/*report als and prox data to input sub system,
for data poll utility in hardware\alsprox.c
*/
static void taos_report_value(int mask)
{
struct taos_prox_info *val = prox_cur_infop;
int lux_val=g_nlux;
int dist;
lux_val/=taos_cfgp->gain_trim;
if (mask==0) {
input_report_abs(light->input_dev, ABS_MISC, lux_val);
printk(KERN_CRIT "TAOS: als_interrupt =%d\n", lux_val);
input_sync(light->input_dev);
}
if (mask==1) {
dist=calc_distance(val->prox_data);
//input_report_als(alsprox->input_dev, ALS_PROX, val->prox_clear);
input_report_abs(proximity->input_dev, ABS_DISTANCE, dist);
//input_report_als(alsprox->input_dev, ALS_PROX, val->prox_event);
printk(KERN_CRIT "TAOS: prox_interrupt =%d, distance=%d\n", val->prox_data,dist);
input_sync(proximity->input_dev);
}
//input_sync(alsprox->input_dev);
//enable_irq(taos_datap->pdata->irq);
}
/* ------------*
* driver init *
*------------*/
static int __init taos_init(void) {
int ret = 0;
//struct i2c_adapter *my_adap;
printk(KERN_ERR "TAOS: comes into taos_init\n");
if ((ret = (alloc_chrdev_region(&taos_dev_number, 0, TAOS_MAX_NUM_DEVICES, TAOS_DEVICE_NAME))) < 0) {
printk(KERN_ERR "TAOS: alloc_chrdev_region() failed in taos_init()\n");
return (ret);
}
taos_class = class_create(THIS_MODULE, TAOS_DEVICE_NAME);
taos_datap = kmalloc(sizeof(struct taos_data), GFP_KERNEL);
if (!taos_datap) {
printk(KERN_ERR "TAOS: kmalloc for struct taos_data failed in taos_init()\n");
return -ENOMEM;
}
memset(taos_datap, 0, sizeof(struct taos_data));
cdev_init(&taos_datap->cdev, &taos_fops);
taos_datap->cdev.owner = THIS_MODULE;
if ((ret = (cdev_add(&taos_datap->cdev, taos_dev_number, 1))) < 0) {
printk(KERN_ERR "TAOS: cdev_add() failed in taos_init()\n");
return (ret);
}
//device_create(taos_class, NULL, MKDEV(MAJOR(taos_dev_number), 0), &taos_driver ,"taos");
ret = i2c_add_driver(&taos_driver);
if(ret){
printk(KERN_ERR "TAOS: i2c_add_driver() failed in taos_init(),%d\n",ret);
return (ret);
}
wake_lock_init(&taos_wake_lock, WAKE_LOCK_SUSPEND, "taos");
//pr_crit(TAOS_TAG "%s:%d\n",__func__,ret);
return (ret);
}
// driver exit
static void __exit taos_exit(void) {
/* if (my_clientp)
i2c_unregister_device(my_clientp);
*/
i2c_del_driver(&taos_driver);
unregister_chrdev_region(taos_dev_number, TAOS_MAX_NUM_DEVICES);
device_destroy(taos_class, MKDEV(MAJOR(taos_dev_number), 0));
cdev_del(&taos_datap->cdev);
class_destroy(taos_class);
kfree(taos_datap);
}
//***************************************************
/*static struct file_operations taos_device_fops = {
.owner = THIS_MODULE,
.open = taos_open,
.release = taos_release,
.ioctl = taos_ioctl,
};
static struct miscdevice taos_device = {
.minor = MISC_DYNAMIC_MINOR,
.name = "taos",
.fops = &taos_device_fops,
};
*/
// client probe
static int taos_probe(struct i2c_client *clientp, const struct i2c_device_id *idp) {
int ret = 0;
int i = 0;
unsigned char buf[TAOS_MAX_DEVICE_REGS];
char *device_name;
// if (device_found)
// return -ENODEV;
if (!i2c_check_functionality(clientp->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
printk(KERN_ERR "TAOS: taos_probe() - i2c smbus byte data functions unsupported\n");
return -EOPNOTSUPP;
}
if (!i2c_check_functionality(clientp->adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
printk(KERN_ERR "TAOS: taos_probe() - i2c smbus word data functions unsupported\n");
}
if (!i2c_check_functionality(clientp->adapter, I2C_FUNC_SMBUS_BLOCK_DATA)) {
printk(KERN_ERR "TAOS: taos_probe() - i2c smbus block data functions unsupported\n");
}
taos_datap->client = clientp;
i2c_set_clientdata(clientp, taos_datap);
//write bytes to address control registers
for(i = 0; i < TAOS_MAX_DEVICE_REGS; i++) {
if((ret = (i2c_smbus_write_byte(clientp, (TAOS_TRITON_CMD_REG | (TAOS_TRITON_CNTRL + i))))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte() to address control regs failed in taos_probe()\n");
return(ret);
}
buf[i] = i2c_smbus_read_byte(clientp);
}
//check device ID "tritonFN"
if ((ret = taos_device_name(buf, &device_name)) == 0) {
printk(KERN_ERR "TAOS: chip id that was read found mismatched by taos_device_name(), in taos_probe()\n");
return -ENODEV;
}
if (strcmp(device_name, TAOS_DEVICE_ID)) {
printk(KERN_ERR "TAOS: chip id that was read does not match expected id in taos_probe()\n");
return -ENODEV;
}
else{
printk(KERN_ERR "TAOS: chip id of %s that was read matches expected id in taos_probe()\n", device_name);
//device_found = 1;
}
device_create(taos_class, NULL, MKDEV(MAJOR(taos_dev_number), 0), &taos_driver ,"taos");
if ((ret = (i2c_smbus_write_byte(clientp, (TAOS_TRITON_CMD_REG | TAOS_TRITON_CNTRL)))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte() to control reg failed in taos_probe()\n");
return(ret);
}
if ((ret = (i2c_smbus_write_word_data(clientp, (0xA0 | TAOS_TRITON_ALS_MAXTHRESHLO),0))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte() to chan0/1/lo/hi reg failed in taos_probe()\n");
}
if ((ret = (i2c_smbus_write_word_data(clientp, (0xA0 | TAOS_TRITON_ALS_MINTHRESHLO),0))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte() to chan0/1/lo/hi reg failed in taos_probe()\n");
}
INIT_WORK(&taos_datap->taos_work, do_taos_work);
taos_datap->pdata = &taos_irq;
if(clientp->irq){
taos_datap->pdata->irq=taos_datap->client->irq;
taos_datap->pdata->int_gpio=INT_TO_MSM_GPIO(taos_datap->pdata->irq);
}
printk(KERN_CRIT "taos use gpio %d\n",taos_datap->pdata->int_gpio);
ret=taos_config_int_gpio(taos_datap->pdata->int_gpio);
if (ret) {
printk(KERN_CRIT "taos configure int_gpio%d failed\n",
taos_datap->pdata->int_gpio);
return ret;
}
ret = request_irq(taos_datap->pdata->irq, taos_interrupt, IRQF_TRIGGER_FALLING,
taos_datap->taos_name, prox_cur_infop);
if (ret) {
printk(KERN_CRIT "taos request interrupt failed\n");
return ret;
}
strlcpy(clientp->name, TAOS_DEVICE_ID, I2C_NAME_SIZE);
strlcpy(taos_datap->taos_name, TAOS_DEVICE_ID, TAOS_ID_NAME_SIZE);
taos_datap->valid = 0;
init_MUTEX(&taos_datap->update_lock);
if (!(taos_cfgp = kmalloc(sizeof(struct taos_cfg), GFP_KERNEL))) {
printk(KERN_ERR "TAOS: kmalloc for struct taos_cfg failed in taos_probe()\n");
return -ENOMEM;
}
//update settings
//this should behind taos_device_name
taos_cfgp->calibrate_target = calibrate_target_param;
taos_cfgp->als_time = als_time_param;
taos_cfgp->scale_factor = scale_factor_param;
taos_cfgp->gain_trim = gain_trim_param;
taos_cfgp->filter_history = filter_history_param;
taos_cfgp->filter_count = filter_count_param;
taos_cfgp->gain = gain_param;
taos_cfgp->prox_threshold_hi = prox_threshold_hi_param;
taos_cfgp->prox_threshold_lo = prox_threshold_lo_param;
taos_cfgp->prox_int_time = prox_int_time_param;
taos_cfgp->prox_adc_time = prox_adc_time_param;
taos_cfgp->prox_wait_time = prox_wait_time_param;
taos_cfgp->prox_intr_filter = prox_intr_filter_param;
taos_cfgp->prox_config = prox_config_param;
taos_cfgp->prox_pulse_cnt = prox_pulse_cnt_param;
taos_cfgp->prox_gain = prox_gain_param;
sat_als = (256 - taos_cfgp->prox_int_time) << 10; //10240
sat_prox = (256 - taos_cfgp->prox_adc_time) << 10; //1024
light = kzalloc(sizeof(struct alsprox_data), GFP_KERNEL);
if (!light) {
ret = -ENOMEM;
goto exit_alloc_data_failed;
}
proximity= kzalloc(sizeof(struct alsprox_data), GFP_KERNEL);
if (!proximity) {
ret = -ENOMEM;
goto exit_alloc_data_failed;
}
light->input_dev = input_allocate_device();
if (!light->input_dev) {
ret = -ENOMEM;
printk(KERN_ERR "taos_probe: Failed to allocate light input device\n");
goto exit_input_dev_alloc_failed;
}
proximity->input_dev = input_allocate_device();
if (!proximity->input_dev) {
ret = -ENOMEM;
printk(KERN_ERR "taos_probe: Failed to allocate prox input device\n");
goto exit_input_dev_alloc_failed;
}
/* lux */
set_bit(EV_ABS, light->input_dev->evbit);
input_set_abs_params(light->input_dev, ABS_MISC, 0, 65535, 0, 0);
light->input_dev->name = "light";
/* prox */
set_bit(EV_ABS, proximity->input_dev->evbit);
input_set_abs_params(proximity->input_dev, ABS_DISTANCE, 0, 65535, 0, 0);
proximity->input_dev->name = "proximity";
ret = input_register_device(light->input_dev);
if (ret) {
printk("taos_probe: Unable to register input device: %s\n", light->input_dev->name);
goto exit_input_register_device_failed;
}
ret = input_register_device(proximity->input_dev);
if (ret) {
printk("taos_probe: Unable to register input device: %s\n", proximity->input_dev->name);
goto exit_input_register_device_failed;
}
return (ret);
//exit_taos_device_register_failed:
exit_input_register_device_failed:
if(light->input_dev)
input_free_device(light->input_dev);
if(proximity->input_dev)
input_free_device(proximity->input_dev);
exit_input_dev_alloc_failed:
exit_alloc_data_failed:
if(light)
kfree(light);
if(proximity)
kfree(proximity);
return (ret);
}
// client remove
static int __devexit taos_remove(struct i2c_client *client) {
int ret = 0;
return (ret);
}
// open
static int taos_open(struct inode *inode, struct file *file) {
struct taos_data *taos_datap;
int ret = 0;
device_released = 0;
taos_datap = container_of(inode->i_cdev, struct taos_data, cdev);
if (strcmp(taos_datap->taos_name, TAOS_DEVICE_ID) != 0) {
printk(KERN_ERR "TAOS: device name incorrect during taos_open(), get %s\n", taos_datap->taos_name);
ret = -ENODEV;
}
return (ret);
}
// release
static int taos_release(struct inode *inode, struct file *file) {
struct taos_data *taos_datap;
int ret = 0;
device_released = 1;
taos_datap = container_of(inode->i_cdev, struct taos_data, cdev);
if (strcmp(taos_datap->taos_name, TAOS_DEVICE_ID) != 0) {
printk(KERN_ERR "TAOS: device name incorrect during taos_release(), get %s\n", taos_datap->taos_name);
ret = -ENODEV;
}
return (ret);
}
// read
static int taos_read(struct file *file, char *buf, size_t count, loff_t *ppos) {
struct taos_data *taos_datap;
u8 i = 0, xfrd = 0, reg = 0;
u8 my_buf[TAOS_MAX_DEVICE_REGS];
int ret = 0;
//if (prox_on)
//del_timer(&prox_poll_timer);
if ((*ppos < 0) || (*ppos >= TAOS_MAX_DEVICE_REGS) || (count > TAOS_MAX_DEVICE_REGS)) {
printk(KERN_ERR "TAOS: reg limit check failed in taos_read()\n");
return -EINVAL;
}
reg = (u8)*ppos;
taos_datap = container_of(file->f_dentry->d_inode->i_cdev, struct taos_data, cdev);
while (xfrd < count) {
if ((ret = (i2c_smbus_write_byte(taos_datap->client, (TAOS_TRITON_CMD_REG | reg)))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte failed in taos_read()\n");
return (ret);
}
my_buf[i++] = i2c_smbus_read_byte(taos_datap->client);
reg++;
xfrd++;
}
if ((ret = copy_to_user(buf, my_buf, xfrd))){
printk(KERN_ERR "TAOS: copy_to_user failed in taos_read()\n");
return -ENODATA;
}
//if (prox_on)
//taos_prox_poll_timer_start();
return ((int)xfrd);
}
// write
static int taos_write(struct file *file, const char *buf, size_t count, loff_t *ppos) {
struct taos_data *taos_datap;
u8 i = 0, xfrd = 0, reg = 0;
u8 my_buf[TAOS_MAX_DEVICE_REGS];
int ret = 0;
//if (prox_on)
//del_timer(&prox_poll_timer);
if ((*ppos < 0) || (*ppos >= TAOS_MAX_DEVICE_REGS) || ((*ppos + count) > TAOS_MAX_DEVICE_REGS)) {
printk(KERN_ERR "TAOS: reg limit check failed in taos_write()\n");
return -EINVAL;
}
reg = (u8)*ppos;
if ((ret = copy_from_user(my_buf, buf, count))) {
printk(KERN_ERR "TAOS: copy_to_user failed in taos_write()\n");
return -ENODATA;
}
taos_datap = container_of(file->f_dentry->d_inode->i_cdev, struct taos_data, cdev);
while (xfrd < count) {
if ((ret = (i2c_smbus_write_byte_data(taos_datap->client, (TAOS_TRITON_CMD_REG | reg), my_buf[i++]))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte_data failed in taos_write()\n");
return (ret);
}
reg++;
xfrd++;
}
//if (prox_on)
//taos_prox_poll_timer_start();
return ((int)xfrd);
}
// llseek
static loff_t taos_llseek(struct file *file, loff_t offset, int orig) {
int ret = 0;
loff_t new_pos = 0;
//if (prox_on)
//del_timer(&prox_poll_timer);
if ((offset >= TAOS_MAX_DEVICE_REGS) || (orig < 0) || (orig > 1)) {
printk(KERN_ERR "TAOS: offset param limit or origin limit check failed in taos_llseek()\n");
return -EINVAL;
}
switch (orig) {
case 0:
new_pos = offset;
break;
case 1:
new_pos = file->f_pos + offset;
break;
default:
return -EINVAL;
break;
}
if ((new_pos < 0) || (new_pos >= TAOS_MAX_DEVICE_REGS) || (ret < 0)) {
printk(KERN_ERR "TAOS: new offset limit or origin limit check failed in taos_llseek()\n");
return -EINVAL;
}
file->f_pos = new_pos;
// if (prox_on)
// taos_prox_poll_timer_start();
return new_pos;
}
/*enable_light_and_proximity, mask values' indication*/
/*10 : light on*/
/*01 : prox on*/
/*20 : light off*/
/*02 : prox off*/
static int enable_light_and_proximity(int mask)
{
u8 ret = 0, reg_val = 0; //itime = 0;
if(mask==0x10)
{
if(!prox_on){
pr_crit(TAOS_TAG "light on while prox off\n");
if ((ret = (i2c_smbus_write_byte_data(taos_datap->client, (TAOS_TRITON_CMD_REG|0x00), 0x00))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte_data failed in ioctl prox_on\n");
return (ret);
}
}else
pr_crit(TAOS_TAG "light on while prox on\n");
if ((ret = (i2c_smbus_write_byte(taos_datap->client, (TAOS_TRITON_CMD_REG|TAOS_TRITON_CMD_SPL_FN|TAOS_TRITON_CMD_ALS_INTCLR)))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte failed in ioctl als_on\n");
return (ret);
}
if(!prox_on){
/*
itime = (((taos_cfgp->als_time/50) * 18) - 1);
itime = (~itime);*/
if ((ret = (i2c_smbus_write_byte_data(taos_datap->client, (TAOS_TRITON_CMD_REG | TAOS_TRITON_ALS_TIME), 0xEE))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte_data failed in ioctl als_on\n");
return (ret);
}
if ((ret = (i2c_smbus_write_byte_data(taos_datap->client, (TAOS_TRITON_CMD_REG|0x03), 0xDC))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte_data failed in ioctl als_on\n");
return (ret);
}
}
if ((ret = (i2c_smbus_write_byte(taos_datap->client, (TAOS_TRITON_CMD_REG | TAOS_TRITON_GAIN)))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte failed in ioctl als_on\n");
return (ret);
}
reg_val = i2c_smbus_read_byte(taos_datap->client);
reg_val = reg_val & 0xFC;
reg_val = reg_val | (taos_cfgp->gain & 0x03);
if ((ret = (i2c_smbus_write_byte_data(taos_datap->client, (TAOS_TRITON_CMD_REG | TAOS_TRITON_GAIN), reg_val))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte_data failed in ioctl als gain\n");
return (ret);
}
reg_val=prox_on? 0x3F:0x1B;
if ((ret = (i2c_smbus_write_byte_data(taos_datap->client, (TAOS_TRITON_CMD_REG | TAOS_TRITON_CNTRL), reg_val)) )< 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte_data failed in ioctl als enable\n");
return (ret);
}
reg_val=prox_on? 0x23:0x03;
if ((ret = (i2c_smbus_write_byte_data(taos_datap->client, (TAOS_TRITON_CMD_REG | TAOS_TRITON_INTERRUPT), reg_val))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte_data failed in ioctl als_on\n");
return (ret);
}
return ret;
}
if(mask==0x01) {
if(!light_on){
if ((ret = (i2c_smbus_write_byte_data(taos_datap->client, (TAOS_TRITON_CMD_REG|0x00), 0x00))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte_data failed in ioctl prox_on\n");
return (ret);
}
}
if ((ret = (i2c_smbus_write_byte_data(taos_datap->client, (TAOS_TRITON_CMD_REG|0x01), taos_cfgp->prox_int_time))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte_data failed in ioctl prox_on\n");
return (ret);
}
if ((ret = (i2c_smbus_write_byte_data(taos_datap->client, (TAOS_TRITON_CMD_REG|0x02), taos_cfgp->prox_adc_time))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte_data failed in ioctl prox_on\n");
return (ret);
}
if ((ret = (i2c_smbus_write_byte_data(taos_datap->client, (TAOS_TRITON_CMD_REG|0x03), taos_cfgp->prox_wait_time))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte_data failed in ioctl prox_on\n");
return (ret);
}
if ((ret = (i2c_smbus_write_byte_data(taos_datap->client, (TAOS_TRITON_CMD_REG|0x0C), taos_cfgp->prox_intr_filter))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte_data failed in ioctl prox_on\n");
return (ret);
}
if ((ret = (i2c_smbus_write_byte_data(taos_datap->client, (TAOS_TRITON_CMD_REG|0x0E), taos_cfgp->prox_pulse_cnt))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte_data failed in ioctl prox_on\n");
return (ret);
}
if ((ret = (i2c_smbus_write_byte(taos_datap->client, (TAOS_TRITON_CMD_REG | TAOS_TRITON_GAIN)))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte failed in ioctl prox_on\n");
return (ret);
}
reg_val = i2c_smbus_read_byte(taos_datap->client);
reg_val = reg_val & 0x03;
reg_val = reg_val | (taos_cfgp->prox_gain & 0xFC);
if ((ret = (i2c_smbus_write_byte_data(taos_datap->client, (TAOS_TRITON_CMD_REG | TAOS_TRITON_GAIN), reg_val))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte_data failed in ioctl prox gain\n");
return (ret);
}
if ((ret = (i2c_smbus_write_byte(taos_datap->client, (TAOS_TRITON_CMD_REG|TAOS_TRITON_CMD_SPL_FN|TAOS_TRITON_CMD_PROX_INTCLR)))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte failed in ioctl als_on\n");
return (ret);
}
if ((ret = (i2c_smbus_write_word_data(taos_datap->client, (0xA0 | TAOS_TRITON_PRX_MAXTHRESHLO),taos_cfgp->prox_threshold_hi))) < 0) {
pr_crit(TAOS_TAG "i2c_smbus_write_byte() to TAOS_TRITON_PRX_MAXTHRESHLO\n");
}
if ((ret = (i2c_smbus_write_word_data(taos_datap->client, (0xA0 | TAOS_TRITON_PRX_MINTHRESHLO),taos_cfgp->prox_threshold_lo))) < 0) {
pr_crit(TAOS_TAG "i2c_smbus_write_byte() to TAOS_TRITON_PRX_MINTHRESHLO\n");
}
prox_cur_infop->prox_event = 0;
prox_cur_infop->prox_clear = 0;
prox_cur_infop->prox_data = 0;
if(light_on)
pr_crit(TAOS_TAG "prox on while light on\n");
reg_val=light_on? 0x3F:0x2F;
if ((ret = (i2c_smbus_write_byte_data(taos_datap->client, (TAOS_TRITON_CMD_REG|0x00), reg_val))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte_data failed in ioctl prox_on\n");
return (ret);
}
reg_val=light_on? 0x23:0x20;
if((ret = (i2c_smbus_write_byte_data(taos_datap->client, (TAOS_TRITON_CMD_REG|0x0C), reg_val))) < 0)
{
printk(KERN_ERR "TAOS: i2c_smbus_write_byte_data failed in ioctl prox_on\n");
return (ret);
}
// Use wake lock to stop suspending during calls.
wake_lock(&taos_wake_lock);
pr_crit(TAOS_TAG "get wake lock");
return ret;
}
if(mask==0x20)
{
if ((ret = (i2c_smbus_write_byte(taos_datap->client, (TAOS_TRITON_CMD_REG | TAOS_TRITON_CNTRL)))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte failed in ioctl als_calibrate\n");
return (ret);
}
reg_val = i2c_smbus_read_byte(taos_datap->client);
if(prox_on){
pr_crit(TAOS_TAG "light off while prox still on\n");
reg_val = reg_val & (~TAOS_TRITON_CNTL_ALS_INT_ENBL);
}
else
reg_val = reg_val & (~(TAOS_TRITON_CNTL_ADC_ENBL | TAOS_TRITON_CNTL_PWRON));
if ((ret = (i2c_smbus_write_byte_data(taos_datap->client, (TAOS_TRITON_CMD_REG | TAOS_TRITON_CNTRL), reg_val))) < 0) {
printk(KERN_ERR "TAOS: i2c_smbus_write_byte_data failed in ioctl als_off\n");
return (ret);
}