学步园

SSL_TSC.C

/*<br /> multi_touch_xx.c - Part of lm_sensors, Linux kernel modules for hardware<br /> monitoring<br /> Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl> and<br /> Philip Edelbrock <phil@netroedge.com><br /> Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com><br /> Copyright (C) 2003 IBM Corp.<br /> 2004-01-16 Jean Delvare <khali@linux-fr.org><br /> Divide the multi_touch_xx in 32-byte (arbitrary) slices. This significantly<br /> speeds sensors up, as well as various scripts using the multi_touch_xx<br /> module.<br /> This program is free software; you can redistribute it and/or modify<br /> it under the terms of the GNU General Public License as published by<br /> the Free Software Foundation; either version 2 of the License, or<br /> (at your option) any later version.<br /> This program is distributed in the hope that it will be useful,<br /> but WITHOUT ANY WARRANTY; without even the implied warranty of<br /> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the<br /> GNU General Public License for more details.<br /> You should have received a copy of the GNU General Public License<br /> along with this program; if not, write to the Free Software<br /> Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.<br /> */<br /> /*<br /> * What this driver doesn't yet support:<br /> *<br /> * - SPI<br /> * - INT2 handling<br /> * - Pulse detection (and the sysctls to control it)<br /> */<br /> #include <linux/cdev.h><br /> #include <linux/kernel.h><br /> #include <linux/init.h><br /> #include <linux/module.h><br /> #include <linux/slab.h><br /> #include <linux/jiffies.h><br /> #include <linux/interrupt.h><br /> #include <linux/i2c.h><br /> #include <linux/mutex.h><br /> #include <linux/input.h><br /> #include <asm/gpio.h><br /> #include <linux/delay.h><br /> #include <asm/irq.h><br /> #include <linux/irq.h><br /> /* Size of multi_touch_xx in bytes */<br /> int NASTECH_TS_MAJOR = 60;<br /> #define SLAVE_ADD 0x60<br /> #define TOUCH_INT_PIN GPIO_NUM(0,29)</p> <p>/* Use our own dbg macro */<br /> #define dbg(format, arg...) printk("----[%s: %d]: " format , __FUNCTION__ , __LINE__, ## arg)<br /> #define mmadbg(format, arg...) printk("----[%s: %d]: " format , __FUNCTION__ , __LINE__, ## arg)</p> <p>/* Addresses to scan */<br /> static unsigned short normal_i2c[] = { 0x60, I2C_CLIENT_END };<br /> /* Insmod parameters */<br /> I2C_CLIENT_INSMOD;<br /> //I2C_CLIENT_INSMOD_1(multi_touch_xx);<br /> static int irq_no=-1;<br /> /* Each client has this additional data */<br /> static int nastech_i2c_continue_read(struct i2c_client *clinet, u8* buffer, u8 len);<br /> typedef struct<br /> {<br /> u32 u32X; /* X coordinate, 0~2047 */<br /> u32 u32Y; /* Y coordinate, 0~2047 */<br /> u8 u8Finger; /* Number of fingers in the touch event */<br /> u32 u32Dis_X; /* X distance between two fingers */<br /> u32 u32Dis_Y; /* Y distance between two fingers. This value could be negative */<br /> } TOUCH_DATA_st;<br /> static struct work_struct nas_works;<br /> static struct i2c_client *myI2C_client=NULL;<br /> struct nas_cdev {<br /> struct cdev *cdev;<br /> };<br /> /* Structure for Input Type*/<br /> struct nas_ts_priv {<br /> uint32_t local_irq;<br /> struct nas_cdev cdev;<br /> TOUCH_DATA_st *touchData;<br /> //struct i2c_client *client;<br /> struct i2c_client *client;<br /> struct input_dev *input;</p> <p> //int reported_finger_count;<br /> u16 keybuff[20]; // number of key K1 K2 ...K5<br /> #ifdef REPORTALL<br /> u16 prekeybuff[20]; // number of key K1 K2 ...K5<br /> #endif<br /> char phys[32];<br /> };<br /> static struct nas_ts_priv *nas_priv = NULL;</p> <p>#define ST_PEN_UP 0<br /> #define ST_PEN_DOWN 1<br /> u8 Calculate_8BitsChecksum( u8 *msg, s32 s32Length )<br /> {<br /> s32 s32Checksum = 0;<br /> s32 i;</p> <p> for ( i = 0 ; i < s32Length; i++ )<br /> {<br /> s32Checksum += msg[i];<br /> }</p> <p> return (u8)( ( -s32Checksum ) & 0xFF );<br /> }</p> <p>#define REPORT_PACKET_LENGTH 8<br /> void nas_ts_irq_callback(void)<br /> {<br /> // read coordinate thought I2C<br /> u8 val[REPORT_PACKET_LENGTH] = {0};<br /> u8 Checksum = 0;<br /> nas_priv->touchData->u32X = 0;<br /> nas_priv->touchData->u32Y = 0;<br /> nas_priv->touchData->u32Dis_X = 0;<br /> nas_priv->touchData->u32Dis_Y = 0;<br /> nas_priv->touchData->u8Finger = 0;</p> <p> printk("**************************/n");<br /> printk("***nas_ts_irq_callback***/n");<br /> printk("**************************/n");<br /> static bool pen_updown = false; //1(true) for down, 0(false) for up<br /> static bool pre_pen_updown = ST_PEN_UP; </p> <p> myI2C_client = nas_priv->client;</p> <p> if(nastech_i2c_continue_read(myI2C_client,&val[0], REPORT_PACKET_LENGTH ) >= 0)<br /> {<br /> Checksum = Calculate_8BitsChecksum( val, (REPORT_PACKET_LENGTH-1) );</p> <p> if ( ( Checksum == val[7] && val[0] == 0x52 ) ) // Check the packet ID(0x52)and checksum<br /> {<br /> /* parsing the coordinate report packet */<br /> /* MSG20XX EVK report format */<br /> /*<br /> * +---------------------------------+<br /> * byte[0] | Packet ID ( 0x52 ) |<br /> * +----------------+----------------+<br /> * byte[1] | u32X[11:8] | u32Y[11:8] |<br /> * +---------------------------------+<br /> * byte[2] | u32X[7:0] |<br /> * +---------------------------------+<br /> * byte[3] | u32Y[7:0] |<br /> * +----------------+----------------+<br /> * byte[4] | u32Dis_X[11:8] | u32Dis_Y[11:8] |<br /> * +----------------+----------------+<br /> * byte[5] | u32Dis_X[7:0] |<br /> * +---------------------------------+<br /> * byte[6] | u32Dis_Y[7:0] |<br /> * +---------------------------------+<br /> * byte[7] | Checksum |<br /> * +---------------------------------+<br /> */<br /> nas_priv->touchData->u32X = ( val[1] & 0xF0 ) << 4 | val[2];<br /> nas_priv->touchData->u32Y = ( val[1] & 0x0F )<< 8 | val[3];<br /> nas_priv->touchData->u32Dis_X = ( val[4] & 0xF0 ) << 4 | val[5];<br /> nas_priv->touchData->u32Dis_Y = ( val[4] & 0x0F ) << 8 | val[6];</p> <p> printk("<<<<<<<<<data<<<<<<<<<<<<</n");<br /> printk("<x=%d,y=%d,dx=%d,dy=%d,</n",nas_priv->touchData->u32X,nas_priv->touchData->u32Y,nas_priv->touchData->u32Dis_X,nas_priv->touchData->u32Dis_Y);<br /> printk("<<<<<<<<<data<<<<<<<<<<<<</n");<br /> if ( nas_priv->touchData->u32X == 0xFFF && nas_priv->touchData->u32Y == 0xFFF && nas_priv->touchData->u32X == 0xFFF && nas_priv->touchData->u32Y == 0xFFF )<br /> {<br /> /* The coordinate report stands for a Touch-End event */<br /> /* Inform the OS or system mailbox that the Touch-End event happened */<br /> }<br /> else<br /> {<br /> /* The coordinate report stands for Touch-On-Panel event */<br /> if ( nas_priv->touchData->u32Dis_X == 0 && nas_priv->touchData->u32Dis_Y == 0 )<br /> {<br /> /* If the distance values are zero, the TP detects one-finger-touch event */<br /> nas_priv->touchData->u8Finger = 1;<br /> }<br /> else if ( nas_priv->touchData->u32Dis_X <= 2047 && nas_priv->touchData->u32Dis_Y <= 2047 )<br /> {<br /> /* If the distance values are valid, the TP detects two-finger-touch event */<br /> nas_priv->touchData->u8Finger = 2;<br /> }<br /> else<br /> {<br /> #ifdef DEBUG<br /> printk(" /* Fetal error */n/* Discard the invalid coordinate reports due to fetal error. *//n");<br /> #endif</p> <p> }</p> <p> }<br /> }<br /> else<br /> {<br /> /* Packet error happened. */<br /> /* Check I2C signal quality and I2C master codes */<br /> }<br /> input_report_abs(nas_priv->input, ABS_X, nas_priv->touchData->u32X);</p> <p> input_report_abs(nas_priv->input, ABS_Y, nas_priv->touchData->u32Y);</p> <p> input_report_abs(nas_priv->input, ABS_HAT0X, nas_priv->touchData->u32Dis_X);</p> <p> input_report_abs(nas_priv->input, ABS_HAT0Y, nas_priv->touchData->u32Dis_Y); </p> <p> input_sync(nas_priv->input);</p> <p> }<br /> }</p> <p>static void nastech_ts_work(struct work_struct *work)<br /> {<br /> nas_ts_irq_callback();<br /> }<br /> static int multi_touch_xx_probe(struct i2c_client *client,const struct i2c_device_id *id);<br /> static int __devexit multi_touch_xx_remove(struct i2c_client *client);<br /> static const struct i2c_device_id multi_touch_xx_id[]={<br /> {"multi_touch_xx",0},<br /> {}<br /> };<br /> /* This is the driver that will be inserted */<br /> static struct i2c_driver multi_touch_xx_driver = {<br /> .driver = {<br /> .name = "multi_touch_xx",<br /> .owner = THIS_MODULE,<br /> },<br /> //.id = I2C_DRIVERID_multi_touch_xx,<br /> .probe = multi_touch_xx_probe,<br /> .remove = __devexit_p(multi_touch_xx_remove),<br /> .id_table = multi_touch_xx_id,<br /> };<br /> static irqreturn_t nastech_ts_isr(int irq, void *dev_id)<br /> {<br /> //disable_irq(ON_TOUCH_INT);<br /> disable_irq(&nas_priv->local_irq);<br /> schedule_work(&nas_works);<br /> enable_irq( &nas_priv->local_irq);<br /> return IRQ_HANDLED;<br /> }<br /> static int nastech_i2c_continue_read(struct i2c_client *clinet, u8* buffer, u8 len)<br /> {<br /> //unsigned char buffer[8];<br /> int rc;<br /> //buffer[0] = addr;<br /> if (1 != (rc = i2c_master_send(clinet, 0x60, 1)))<br /> {<br /> //printk("i2c i/o error: rc == %d (should be 1)/n", rc);<br /> mmadbg("i2c i/o error: rc == %d (should be 1)/n", rc);<br /> }<br /> //msleep(10);<br /> if (1 != (rc = i2c_master_recv(clinet, &buffer[0], len)))<br /> {<br /> //dbg("i2c i/o error: rc == %d (should be 1)/n", rc);<br /> mmadbg("i2c i/o error: rc == %d (should be 1)/n", rc);<br /> }<br /> printk(">>> nastech_i2c_continue_read>>>>>>>>>>>%x,>>>>>>>>>>>>/n",buffer[0]);<br /> dbg("read : addr:value = 0x%x:0x%x/n", 0x60, buffer[0] );<br /> return (buffer[0]);<br /> }<br /> static int multi_touch_xx_probe(struct i2c_client *client,const struct i2c_device_id *id)<br /> {<br /> u8 value[8];<br /> int err = 0;<br /> uint32_t irq;</p> <p> struct i2c_client *new_client;<br /> //struct nas_ts_data *nastech_data;<br /> struct input_dev *pInput_dev;<br /> static struct nas_ts_priv *nas_priv = NULL;</p> <p> INIT_WORK(&nas_works, nastech_ts_work);<br /> /*----------------------i2c init---------------------*/<br /> printk("/***************************/n");<br /> printk("/*******multi_touch_xx_probe********************/n");<br /> printk("/***************************/n");<br /> //================================//<br /> // Register as I2C Client //<br /> //================================//<br /> if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))<br /> {<br /> goto exit;<br /> }<br /> printk(">>>>>>after check_functionality/n");</p> <p> if(!(nas_priv=kzalloc(sizeof(struct nas_ts_priv), GFP_KERNEL)))<br /> {<br /> err = -ENOMEM;<br /> goto exit;<br /> }<br /> printk(">>>>>>after zalloc/n");<br /> nas_priv->client=kzalloc(sizeof(struct i2c_client),GFP_KERNEL);<br /> new_client=nas_priv->client;<br /> //=====================================================================================================================//<br /> //nas_priv->nas_ts_datap = nastech_data;<br /> printk(">1oc/n");</p> <p> //nas_priv->client = &nastech_data->client;<br /> printk("2loc/n");</p> <p> i2c_set_clientdata(new_client,nas_priv);<br /> //printk(">>>>>>after i2c_set_clientdata/n");<br /> nas_priv->client->addr = 0x60;<br /> printk(">>>3oc/n");<br /> nas_priv->client->adapter = client->adapter;<br /> printk(">>4alloc/n");<br /> nas_priv->client->driver = &multi_touch_xx_driver;<br /> printk(">5c/n");<br /> nas_priv->client->flags = 0;<br /> printk(">>>6alloc/n");</p> <p> //=====================================================================================================================//<br /> // Touch Panel Setting & Calibrate //<br /> //=====================================================================================================================//</p> <p> //=====================================================================================================================//</p> <p> //================================//<br /> // Register as Input Device //<br /> //================================//<br /> printk(">>>>>>before input allocate/n");<br /> pInput_dev = input_allocate_device();<br /> printk(">>>>>>after input allocate/n");</p> <p> if(!pInput_dev) {<br /> printk(KERN_ERR"[%s - %d] malloc memory for pInput_dev ERR!/n", __FUNCTION__, __LINE__);<br /> goto exit_kfree;<br /> }<br /> printk("input/n");<br /> nas_priv->input=pInput_dev;</p> <p> nas_priv->input->evbit[0] = BIT_MASK (EV_SYN)| BIT_MASK (EV_ABS) | BIT_MASK (EV_KEY) ;//mult touch<br /> nas_priv->input->keybit [BIT_WORD (BTN_TOUCH)] = BIT_MASK (BTN_TOUCH);<br /> //<br /> printk("input_set_abs_params/n");<br /> input_set_abs_params(nas_priv->input, ABS_X, 0, 1791, 0, 0);//³]©wµŽ¹ï®yŒÐªº³Ì€j­È»P³Ì€p­È<br /> input_set_abs_params(nas_priv->input, ABS_Y, 0, 1023, 0, 0);//³]©wµŽ¹ï®yŒÐªº³Ì€j­È»P³Ì€p­È</p> <p> input_set_abs_params(nas_priv->input, ABS_HAT0X, 0, 1791, 0, 0);//³]©wµŽ¹ï®yŒÐªº³Ì€j­È»P³Ì€p­È<br /> input_set_abs_params(nas_priv->input, ABS_HAT0Y, 0, 1023, 0, 0);//³]©wµŽ¹ï®yŒÐªº³Ì€j­È»P³Ì€p­È<br /> printk(" after input_set_abs_params/n");<br /> //sprintf(nas_priv->phys, "ts0");<br /> //nas_priv->input->private = nas_priv; //????<br /> nas_priv->input->name = "nastech_ts";<br /> nas_priv->input->phys = nas_priv->phys;<br /> nas_priv->input->id.bustype = BUS_I2C;<br /> nas_priv->input->id.vendor = 0x2011;<br /> nas_priv->input->id.product = 0x0800;<br /> //nas_priv->input->id.version = NASTECH_TS_VERSION;<br /> //=====================================================================================================================//</p> <p> if(input_register_device(nas_priv->input)) {<br /> printk(KERN_ERR"[%s - %d] input_register_device for auo-tp2 err!/n", __FUNCTION__, __LINE__);<br /> goto exit_kfree;<br /> }<br /> printk(" after input_register_device/n");<br /> nastech_i2c_continue_read(nas_priv->client,&value[0],8);</p> <p> printk(" after icontinue_read_device%x,/n",value[0]);<br /> // register the GPIO inerrupt<br /> gpio_direction_input(TOUCH_INT_PIN);<br /> irq = gpio_to_irq(TOUCH_INT_PIN);<br /> nas_priv->local_irq = irq;</p> <p> set_irq_type(irq, IRQ_TYPE_EDGE_FALLING);</p> <p> if( request_irq(irq, nastech_ts_isr,IRQF_DISABLED|IRQF_TRIGGER_FALLING, "nastech_ts", (void *)nas_priv->input))<br /> {<br /> input_free_device(pInput_dev);<br /> goto exit_kfree;<br /> }<br /> enable_irq(&nas_priv->local_irq);<br /> return 0;<br /> exit_kfree:<br /> kfree(nas_priv->client);<br /> exit:<br /> destroy_workqueue (&nas_works);<br /> unregister_chrdev_region(MKDEV(NASTECH_TS_MAJOR, 0), 1);<br /> cdev_del(&nas_priv->cdev);<br /> kfree(nas_priv);</p> <p> return err;</p> <p> return err;<br /> }<br /> //static int multi_touch_xx_detach_client(struct i2c_client *client)<br /> static int __devexit multi_touch_xx_remove(struct i2c_client *client)<br /> {<br /> struct multi_touch_xx_info *data = i2c_get_clientdata(client);</p> <p> kfree(data);<br /> dbg("no err, return /n");<br /> return 0;<br /> }</p> <p>uint32_t ssltsc_vbat(void)<br /> {<br /> return 0;<br /> }<br /> static int __init multi_touch_xx_init(void)<br /> {<br /> dbg("register the driver/n");<br /> dbg("init multi_touch_xx/n");<br /> printk("***********************/n");<br /> printk("**********multi_touch_xx_init*************/n");<br /> printk("***********************/n");<br /> return i2c_add_driver(&multi_touch_xx_driver);<br /> }<br /> static void __exit multi_touch_xx_exit(void)<br /> {<br /> dbg("exit multi_touch_xx/n");<br /> i2c_del_driver(&multi_touch_xx_driver);<br /> }</p> <p>MODULE_AUTHOR("Maggie Qiu <maggieqiu@solomon-systech.com>");<br /> MODULE_DESCRIPTION("I2C multi_touch_xx driver 

static const struct s35390a_platform_data multi_touch_xx =<br /> {<br /> .irq1 = 1,<br /> .irq2 = gpio_to_irq(GPIO_NUM(0,29)),<br /> };<br /> static struct i2c_board_info __initdata _i2c[] =<br /> {<br /> {<br /> I2C_BOARD_INFO("mma7455l", 0x1D),<br /> .platform_data = &mma7455l,<br /> },<br /> {<br /> I2C_BOARD_INFO("multi_touch_xx", 0x60),<br /> .platform_data = &multi_touch_xx,<br /> },<br /> }; 

i2c_register_board_info(0, _i2c, ARRAY_SIZE(_i2c));