Hi JJ. Most of your comment I'll follow and I just thought it can be guarded by #if CONFIG_xxx, then it can be easy compiled under x86 without error. But OK, I'll remove those mess code. > -----Original Message----- > From: linux-input-owner@xxxxxxxxxxxxxxx [mailto:linux-input-owner@xxxxxxxxxxxxxxx] On > Behalf Of Jian-Jhong Ding > Sent: Monday, October 22, 2012 11:48 AM > To: Scott Liu; Dmitry Torokhov; linux-input@xxxxxxxxxxxxxxx; linux-i2c@xxxxxxxxxxxxxxx; > linux-kernel@xxxxxxxxxxxxxxx > Cc: Benjamin Tissoires; Jesse; Vincent Wang; Paul > Subject: Re: [PATCH v1] Support Elan Touchscreen eKTF product. > > Hi Scott, > > Some comments and questions below, > > Thanks, > -JJ > Scott Liu <scott.liu@xxxxxxxxxx> writes: > > This patch is for Elan eKTF Touchscreen product, I2C adpater module. > > > > This driver adds communication support with Elan eKTF controller using I2C bus. > > > > Signed-off-by: Scott Liu <scott.liu@xxxxxxxxxx> > > --- > > drivers/input/touchscreen/Kconfig | 9 + > > drivers/input/touchscreen/Makefile | 1 + > > drivers/input/touchscreen/elants_i2c.c | 3182 > ++++++++++++++++++++++++++++++++ > > include/linux/i2c/elants.h | 61 + > > 4 files changed, 3253 insertions(+) > > create mode 100644 drivers/input/touchscreen/elants_i2c.c > > create mode 100644 include/linux/i2c/elants.h > > > > diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig > > index 1ba232c..50e6f05 100644 > > --- a/drivers/input/touchscreen/Kconfig > > +++ b/drivers/input/touchscreen/Kconfig > > @@ -237,6 +237,15 @@ config TOUCHSCREEN_EETI > > To compile this driver as a module, choose M here: the > > module will be called eeti_ts. > > > > +config TOUCHSCREEN_ELAN > > + tristate "Elan touchscreen panel support" > > + depends on I2C > > + help > > + Say Y here to enable support for I2C connected Elan touch panels. > > + > > + To compile this driver as a module, choose M here: the > > + module will be called elants_i2c. > > + > > config TOUCHSCREEN_EGALAX > > tristate "EETI eGalax multi-touch panel support" > > depends on I2C > > diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile > > index 178eb12..428a631 100644 > > --- a/drivers/input/touchscreen/Makefile > > +++ b/drivers/input/touchscreen/Makefile > > @@ -28,6 +28,7 @@ obj-$(CONFIG_TOUCHSCREEN_EDT_FT5X06) += > edt-ft5x06.o > > obj-$(CONFIG_TOUCHSCREEN_HAMPSHIRE) += hampshire.o > > obj-$(CONFIG_TOUCHSCREEN_GUNZE) += gunze.o > > obj-$(CONFIG_TOUCHSCREEN_EETI) += eeti_ts.o > > +obj-$(CONFIG_TOUCHSCREEN_ELAN) += elants_i2c.o > > obj-$(CONFIG_TOUCHSCREEN_ELO) += elo.o > > obj-$(CONFIG_TOUCHSCREEN_EGALAX) += egalax_ts.o > > obj-$(CONFIG_TOUCHSCREEN_FUJITSU) += fujitsu_ts.o > > diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c > > new file mode 100644 > > index 0000000..d87b2ef > > --- /dev/null > > +++ b/drivers/input/touchscreen/elants_i2c.c > > @@ -0,0 +1,3182 @@ > > +/* > > + * Elan Microelectronics touchpanels with I2C interface > > + * > > + * Copyright (C) 2012 Elan Microelectronics Corporation. > > + * Scott Liu <scott.liu@xxxxxxxxxx> > > + * > > + * This code is partly based on hid-multitouch.c: > > + * > > + * Copyright (c) 2010-2012 Stephane Chatty <chatty@xxxxxxx> > > + * Copyright (c) 2010-2012 Benjamin Tissoires <benjamin.tissoires@xxxxxxxxx> > > + * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France > > + * > > + */ > > + > > +/* > > + * 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. > > + * > > + */ > > + > > +#define CHIP_NUM 2 > > What does this constant mean? What chip does this refer to? We have different solution for different size of panels and consist of number of chips. So I think that is it possible to define this constant here and edit by the real solution? > > + > > +/* Reserved for having platform to test */ > > +#define MT_TYPE_B 0 > > Can't we just go MT-B all the way? Reserved to test what? OK. BTW, it's reserved for early Android upstream. > > +/* Define it if using on Android system */ > > +#define ANDROID 0 > > Please just target mainline. Or at least make this a Kconfig option and > add a second patch for Android. OK, I will target the mainline. > > +#include <linux/module.h> > > +#include <linux/input.h> > > +#include <linux/interrupt.h> > > + > > +#include <linux/platform_device.h> > > +#include <linux/i2c.h> > > +#include <linux/delay.h> > > +#include <linux/gpio.h> > > +#include <linux/jiffies.h> > > +#include <linux/hrtimer.h> > > +#include <linux/timer.h> > > +#include <linux/kthread.h> > > +#include <linux/miscdevice.h> > > +#include <linux/uaccess.h> > > +#include <linux/buffer_head.h> > > +#include <linux/version.h> > > +#include <linux/kfifo.h> > > +#include <linux/slab.h> > > +#if (ANDROID) > > Please drop this. OK > > +#include <linux/wakelock.h> > > +#include <linux/earlysuspend.h> > > +#endif > > +#if (MT_TYPE_B) > > I definitely think we should always use MT-B. > > +#include <linux/input/mt.h> > > +#endif > > + > > +/* debug option */ > > +static bool debug = false; > > +module_param(debug, bool, 0444); > > +MODULE_PARM_DESC(debug, "print a lot of debug information"); > > + > > +#define elan_dbg(client, fmt, arg...) \ > > + if (debug) \ > > + dev_printk(KERN_DEBUG, &client->dev, fmt, ##arg) > > + > > +/*================================================= > > + * Marco > > + *================================================= */ > > +#define DRV_NAME "elants_i2c" > > + > > +#define DRV_MA_VER 2 > > +#define DRV_MI_VER 0 > > +#define DRV_SUB_MI_VER 0 > > + > > +#define _str(s) #s > > +#define str(s) _str(s) > > +#define DRIVER_VERSION > str(DRV_MA_VER.DRV_MI_VER.DRV_SUB_MI_VER) > > + > > + > > +#define IDX_PACKET_SIZE_4FIG 17 > > +#define IDX_PACKET_SIZE_WIDTH 40 > > + > > +#define FINGER_NUM 10 > > + > > +#define PWR_STATE_DEEP_SLEEP 0 > > +#define PWR_STATE_NORMAL 1 > > +#define PWR_STATE_MASK BIT(3) > > + > > +#define CMD_S_PKT 0x52 > > +#define CMD_R_PKT 0x53 > > +#define CMD_W_PKT 0x54 > > + > > +#define HELLO_PKT 0x55 > > +#define NORMAL_PKT 0x62 > > + > > +#define RESET_PKT 0x77 > > +#define CALIB_PKT 0xA8 > > + > > +#define FINGER_ID 1 > > + > > +#define FIFO_SIZE (64) > > + > > + > > +/*! Convert from rows or columns into resolution */ > > +#define ELAN_TS_RESOLUTION(n) ((n - 1) * 64) > > + > > +static const char hello_packet[4] = { 0x55, 0x55, 0x55, 0x55 }; > > +static const char iniap_packet[4] = { 0x55, 0xaa, 0x33, 0xcc }; > > +static const char recov_packet[4] = { 0x55, 0x55, 0x80, 0x80 }; > > + > > +#include <linux/i2c/elants.h> > > Move this up with the rest of the includes. OK > > +/*! Firmware protocol status flag */ > > +#define PRO_I2C_WRT_CMD_SYNC 0x00000001 > > +#define PRO_HID_MOD_CHECKSUM 0x00000002 > > +#define PRO_UPDATE_FW_MODE 0x00000080 > > + > > + > > +/*! driver status flag, should move to public header file */ > > +#define STA_NONINIT 0x00000001 > > +#define STA_INIT 0x00000002 > > +#define STA_INIT2 0x00000004 > > +#define STA_INIT3 0x00000100 > > +#define STA_INIT4 0x00000200 > > +#define STA_PROBED 0x00000008 > > +#define STA_ERR_HELLO_PKT 0x00000010 > > +#define STA_USE_IRQ 0x00000020 > > +#define STA_SLEEP_MODE 0x00000040 > > + > > +/*======================================= > > + * Structure Definition > > + *=======================================*/ > > + > > +/*! @enum elan i2c address definition */ > > +enum elan_i2c_addr { > > + elan_i2c_master = 0x10, > > + elan_i2c_slave1 = 0x20, > > + elan_i2c_slave2 = 0x21, > > + > > + elan_i2c_maxnum = 3, > > +}; > > + > > +/*! @enum finger_report_header Finger report header byte definition */ > > +enum finger_report_header { > > + idx_coordinate_packet_4_finger = 0x5c, > > + idx_coordinate_packet_10_finger = 0x62, > > +}; > > + > > +/*! @enum fw_queue_report_hdr FW Queue report header definition */ > > +enum fw_queue_report_hdr { > > + queue_header_byte_Single = 0x62, > > + queue_header_byte_normal = 0x63, > > + queue_header_byte_wait = 0x64, > > + queue_header_size = 4, > > + queue_packet_max_len = queue_header_size + (IDX_PACKET_SIZE_WIDTH * 3), > > +}; > > + > > +/*! @enum fw_normal_cmd_hdr FW Normal command header definition */ > > +enum fw_normal_cmd_hdr { > > + cmd_header_byte_write = 0x54, > > + cmd_header_byte_read = 0x53, > > + cmd_header_byte_response = 0x52, > > + cmd_header_byte_hello = 0x55, > > + cmd_response_len = 4 > > +}; > > + > > +/*! @enum fw_info_pos FW information position */ > > +enum fw_info_pos { > > + idx_finger_header = 0, > > + idx_finger_state = 1, > > + idx_finger_total = 2, > > + idx_finger_checksum = 34, > > + idx_finger_width = 35, > > + idx_4finger_checksum = 17, > > + idx_finger_width_checksum = 34, > > +}; > > Seems odd to define these as an enum. Define constants? mmm...I consider it is as our firmware contents information so I just make it as enum and easy to manage it. May I keep it? > > +/*! @enum lock_bit Lock bit definition */ > > +enum lock_bit { > > + idx_file_operate = 0, > > + idx_cmd_handshake = 1, > > + idx_finger_report = 2, > > + idx_test_mode = 3, > > +}; > > + > > +enum kfifo_ret { > > + ret_ok = 0, > > + ret_cmdrsp = 1, > > + ret_fail = -1, > > +}; > > + > > +typedef enum elan_boot_e { > > + E_BOOT_NORM = 0, > > + E_BOOT_IAP = 1 > > +} elan_boot_t; > > + > > +/* FW read command, 0x53 0x?? 0x0, 0x01 */ > > +enum { > > + E_ELAN_INFO_FW_VER = 0x00, > > + E_ELAN_INFO_BC_VER = 0x10, > > + E_ELAN_INFO_FW_ID = 0xf0 > > +}; > > + > > + > > +/*! @struct <multi_queue_header> */ > > +struct multi_queue_header { > > + u8 packet_id; > > + u8 report_count; > > + u8 report_length; > > + u8 reserved; > > +}; > > + > > +/*! @brief elan_polling */ > > +struct elan_polling { > > + struct workqueue_struct *elan_wq; /* polling work queue */ > > + struct timer_list timer; /* Polling intr_gpio timer */ > > + u8 int_status; /* polling intr gpio status */ > > +}; > > + > > + > > +/* finger handler, refer to hid-multitouch.c */ > > +struct mt_slot { > > + __s32 x, y, p, w, h; > > + __s32 contactid; /* the device ContactID assigned to this slot */ > > + bool touch_state; /* is the touch valid? */ > > + bool seen_in_this_frame;/* has this slot been updated */ > > +}; > > + > > +struct mt_device { > > + struct mt_slot curdata; /* placeholder of incoming data */ > > + __u8 num_received; /* how many contacts we received */ > > + __u8 num_expected; /* expected last contact index */ > > + __u8 maxcontacts; > > + bool curvalid; /* is the current contact valid? */ > > + struct mt_slot *slots; > > +}; > > With Benjamin's i2c-hid implimentation, is it possible to make > hid-multitouch not depend on USBHID and reuse it to drive this device? I'll reply it at another mail since I saw Dmitry's reply this morning. > > + > > +/** > > +* > > +* @brief elants_data > > +* > > +* all variable should include in this struct. > > +* > > +*/ > > +struct elants_data { > > + int intr_gpio; /* interupter pin*/ > > + int rst_gpio; /* reset pin*/ > > + int use_irq; > > + u8 major_fw_version; > > + u8 minor_fw_version; > > + u8 major_bc_version; > > + u8 minor_bc_version; > > + u8 major_hw_id; > > + u8 minor_hw_id; > > + bool fw_enabled; /* True if firmware device enabled*/ > > + int rows; /* Panel geometry for input layer*/ > > + int cols; > > + int x_max; > > + int y_max; > > + /* Power state 0:sleep 1:active*/ > > + u8 power_state; > > + /* TS is in IAP mode already*/ > > +#define IAP_MODE_ENABLE 1 > > Why not add this as a Kconfig entry? This constant define is to iap_mode variable. iap_mode == IAP_MODE_ENABLE means driver detects firmware fail OR user intends to update firmware by ioctl command. So I think it is not necessary to add this to Kconfig. Thanks, Scott > > + /* 1 : Firmware update mode > > + 0 : normal*/ > > + unsigned int iap_mode; > > + unsigned int rx_size; /* Read size in use*/ > > + > > + /* Multi-queue info */ > > + struct multi_queue_header mq_header; > > + > > + /* our i2c client*/ > > + struct i2c_client *client; > > + /* input device*/ > > + struct input_dev *input; > > + /* normal function work thread*/ > > + struct workqueue_struct *elan_wq; > > + /* normal function work queue*/ > > + struct work_struct work; > > + /* start probe start*/ > > + struct task_struct *thread; > > + /* char device for ioctl and IAP*/ > > + struct miscdevice firmware; > > + /* use timer if use_irq == 0*/ > > + struct hrtimer timer; > > + /* regular polling work thread*/ > > + struct work_struct pollingwork; > > + /* regular polling work queue*/ > > + struct elan_polling polling; > > +#if (ANDROID) > > + struct early_suspend early_suspend; > > + /* avoid sleep during IAP.*/ > > + struct wake_lock wakelock; > > +#endif > > Please drop this. > > + /* Protects I2C accesses to device*/ > > + struct mutex mutex; > > + /* Protects I2C tx/rx*/ > > + struct mutex tr_mutex; > > + > > + /* Lock openers*/ > > + unsigned long busy; > > + /* Protocol stats for firmware*/ > > + unsigned int protocol; > > + > > + /* elan-iap i2c address*/ > > + unsigned short i2caddr; > > + > > + /* fifo and processing */ > > + struct kfifo fifo; > > + > > + /* Serialize operations around FIFO */ > > + struct mutex fifo_mutex; > > + wait_queue_head_t wait; > > + spinlock_t rx_kfifo_lock; > > + > > + /* boot log */ > > + u8 boot_log[256]; > > + > > + /*! Add for TS driver debug */ > > + unsigned int status; > > + long int irq_received; > > + long int packet_received; > > + long int packet_fail; > > + long int touched_sync; > > + long int no_touched_sync; > > + long int checksum_correct; > > + long int wdt_reset; > > + u16 checksum_fail; > > + u16 header_fail; > > + u16 mq_header_fail; > > + u16 drop_frame; > > + > > + /* mt device */ > > + struct mt_device td; > > +}; > > + > > + > > + > > +/*/============================================ > > + * Function prototype > > + *=============================================*/ > > +static int elants_set_data(struct i2c_client *client, > > + const u8 *data, > > + size_t len); > > +static int elants_async_recv_data(struct i2c_client *client, > > + const uint8_t *cmd, > > + uint8_t *buf, > > + size_t tx_size, > > + size_t rx_size); > > + > > +static void elants_drop_packet(struct elants_data *ts); > > +static irqreturn_t elants_work_func(int irq, void *work); > > + > > +static irqreturn_t elants_irq_handler(int irq, void *dev_id); > > +static int elan_hw_reset(struct i2c_client *client); > > +static int elan_touch_pull_frame(struct elants_data *ts, u8 *buf); > > + > > +#ifdef CONFIG_HAS_EARLYSUSPEND > > +static void elants_early_suspend(struct early_suspend *h); > > +static void elants_late_resume(struct early_suspend *h); > > +#endif > > Android specific. Please drop. > > + > > +/*================================================= > > + * Global variable > > + *=================================================*/ > > + > > +/*! for elan-iap char driver */ > > +static struct miscdevice *private_ts; > > Firmware updating functionality? What about try to use sysfs entry? > And it would be easier to review if you split firmware updating code > into another patch. > > +static bool old_bootcode = false; > > + > > +static u8 tp_device_addr[3] = {elan_i2c_master, > > + elan_i2c_slave1, > > + elan_i2c_slave2 > > + }; > > + > > + > > +#define elants_acqurie_data(a, cmd, buf, c) \ > > + elants_async_recv_data(a, cmd, buf, c, c) > > + > > +/*================================================= > > + * Function implement > > + *=================================================*/ > > +static inline void elan_msleep(u32 t) > > +{ > > + /* > > + * If the sleeping time is 10us - 20ms, usleep_range() is recommended. > > + * Read Documentation/timers/timers-howto.txt > > + */ > > + usleep_range(t*1000, t*1000 + 500); > > +} > > + > > +/** > > + * @brief __issue_bootcode_cmd - hadle bootcode status. > > + * @param client : our i2c device > > + * > > + * @return { >0 means success, > > + * otherwise fail. } > > + * > > + * Enter Normal mode packet is {0x55, 0x55, 0x55, 0x55} > > + * 2012/3/1 won't issue bootcmd in normal driver initial flow. > > + */ > > +static int elan_bootcode_cmd(struct i2c_client *client, > > + u8 passcode) > > +{ > > + int rc = 0; > > + struct elants_data *ts = i2c_get_clientdata(client); > > + u8 command[2][4] = { > > + {0x45, 0x49, 0x41, 0xFF}, /* normal_command */ > > + {0x45, 0x49, 0x41, 0x50}, /* iap_command */ > > + }; > > + > > + /* Detect old / new FW */ > > + elan_msleep(90); > > + > > + if (gpio_get_value(ts->intr_gpio) == 0) { > > + /* Old FW */ > > + pr_warn("detect intr!!!!! OLD BC detect\n"); > > + return -2; > > + } > > + > > + if (passcode > E_BOOT_IAP) > > + return -1; > > + > > + elan_dbg(client, "passcode = %x:%x:%x:%x\n", > > + command[passcode][0], > > + command[passcode][1], > > + command[passcode][2], > > + command[passcode][3]); > > + > > + mutex_lock(&ts->mutex); > > + > > + ts->i2caddr = elan_i2c_slave2; > > + rc = elants_set_data(client, command[passcode], 4); > > + if (rc < 0) > > + dev_err(&ts->client->dev, > > + "[ELAN] set passcode[%d] fail\n", passcode); > > + > > + ts->i2caddr = elan_i2c_slave1; > > + rc = elants_set_data(client, command[passcode], 4); > > + if (rc < 0) > > + dev_err(&ts->client->dev, > > + "[ELAN] set passcode[%d] fail\n", passcode); > > + > > + ts->i2caddr = elan_i2c_master; > > + rc = elants_set_data(client, command[passcode], 4); > > + if (rc < 0) > > + dev_err(&ts->client->dev, > > + "[ELAN] set passcode[%d] fail\n", passcode); > > + > > + /* normal communitcat interactives with Master. */ > > + ts->i2caddr = elan_i2c_master; > > + mutex_unlock(&ts->mutex); > > + > > + return rc; > > +} > > + > > +/** > > +* @brief \b elan_iap_open - char device > > +* > > +* purpose for ioctl and iap updating fw. > > +*/ > > +int elan_iap_open(struct inode *inode, struct file *filp) > > +{ > > + struct elants_data *ts ; > > + > > + filp->private_data = private_ts; > > + ts = container_of(filp->private_data, > > + struct elants_data, firmware); > > + dev_dbg(&ts->client->dev, > > + "[ELAN] Enter %s\n", __func__); > > + > > + return 0; > > +} > > + > > +/** > > +* @brief \b elan_iap_release - char device > > +* > > +* purpose for close this device > > +*/ > > +int elan_iap_release(struct inode *inode, struct file *filp) > > +{ > > + struct elants_data *ts = > > + container_of(filp->private_data, > > + struct elants_data, firmware); > > + dev_dbg(&ts->client->dev, > > + "[ELAN] Enter %s\n", __func__); > > + > > + return 0; > > +} > > + > > +/** > > +* @brief \b elan_iap_write - iap write page data > > +* @param buff is page data from user space > > +* @param count is number of data in byte. > > +* > > +* purpose for iap write page data > > +*/ > > +ssize_t elan_iap_write(struct file *filp, > > + const char *buff, > > + size_t count, > > + loff_t *offp) > > +{ > > + struct elants_data *ts = > > + container_of(filp->private_data, > > + struct elants_data, firmware); > > + int ret; > > + u8 txbuf[256]; > > + struct i2c_adapter *adap = ts->client->adapter; > > + struct i2c_msg msg; > > + > > + if (count > 256) > > + return -EMSGSIZE; > > + > > + if (copy_from_user(txbuf, buff, count)) > > + return -EFAULT; > > + > > + msg.addr = ts->i2caddr; > > + msg.flags = ts->client->flags & I2C_M_TEN; > > + msg.len = count; > > + msg.buf = (char *)txbuf; > > + > > + ret = i2c_transfer(adap, &msg, 1); > > + if (ret != 1) > > + dev_err(&ts->client->dev, > > + "[ELAN] i2c_master_send fail, ret=%d\n", ret); > > + > > + /* If everything went ok (i.e. 1 msg transmitted), return #bytes > > + transmitted, else error code. */ > > + return (ret == 1) ? count : ret; > > +} > > + > > +/** > > +* @brief \b elan_iap_read - read status code from TP > > +* > > +* purpose for iap read status code from TP > > +*/ > > +ssize_t elan_iap_read(struct file *filp, > > + char *buff, > > + size_t count, > > + loff_t *offp) > > +{ > > + struct elants_data *ts = > > + container_of(filp->private_data, > > + struct elants_data, firmware); > > + u8 rxbuf[256]; > > + int ret; > > + struct i2c_adapter *adap = ts->client->adapter; > > + struct i2c_msg msg; > > + > > + if (count > 256) > > + return -EMSGSIZE; > > + > > + msg.addr = ts->i2caddr; > > + msg.flags = ts->client->flags & I2C_M_TEN; > > + msg.flags |= I2C_M_RD; > > + msg.len = count; > > + msg.buf = rxbuf; > > + > > + ret = i2c_transfer(adap, &msg, 1); > > + if (ret == 1) > > + if (copy_to_user(buff, rxbuf, count)) > > + return -EFAULT; > > + > > + /* If everything went ok (i.e. 1 msg transmitted), return #bytes > > + transmitted, else error code. */ > > + return (ret == 1) ? count : ret; > > +} > > + > > +/** > > +* @brief \b elan_iap_ioctl - ioctl > > +* @param cmd to control our TP device. > > +* @param arg is parameter from user space > > +* > > +* purpose is that control our TP by char device node. > > +*/ > > +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 36) > > +static int elan_iap_ioctl(struct inode *inode, > > + struct file *filp, > > + unsigned int cmd, > > + unsigned long arg) > > +#else > > +static long elan_iap_ioctl(struct file *filp, > > + unsigned int cmd, > > + unsigned long arg) > > +#endif > > +{ > > + struct elants_data *ts = > > + container_of(filp->private_data, > > + struct elants_data, firmware); > > + int __user *argp = (int __user *)arg; > > + u8 len, buf[32]; > > + int rc; > > + > > + switch (cmd) { > > + case IOCTL_I2C_SLAVE: > > + ts->i2caddr = (unsigned short)arg; > > + break; > > + case IOCTL_MAJOR_FW_VER: > > + put_user(ts->major_fw_version, argp); > > + break; > > + case IOCTL_MINOR_FW_VER: > > + put_user(ts->minor_fw_version, argp); > > + break; > > + case IOCTL_CHECK_RECOVERY_MODE: > > + put_user(ts->iap_mode, argp); > > + break; > > + case IOCTL_IAP_ENABLE: { > > + disable_irq(ts->client->irq); > > +#if (ANDROID) > > + wake_lock(&ts->wakelock); > > +#endif > > + ts->protocol |= PRO_UPDATE_FW_MODE; > > + } > > + break; > > + case IOCTL_IAP_DISABLE: > > + ts->protocol &= ~PRO_UPDATE_FW_MODE; > > +#if (ANDROID) > > + wake_unlock(&ts->wakelock); > > +#endif > > + enable_irq(ts->client->irq); > > + break; > > + case IOCTL_BOOTCODE_CMD: { > > + int mode; > > + > > + len = 1; > > + if (copy_from_user(buf, (const void *)arg, len)) > > + return -EFAULT; > > + > > + mode = buf[0]; > > + rc = elan_bootcode_cmd(ts->client, (u8)mode); > > + if (rc < 0) { > > + elan_dbg(ts->client, > > + "elan_bootcode_command error\n"); > > + return -1; > > + } > > + } > > + break; > > + case IOCTL_RESET: > > + pr_warn("[ELAN] IOCTL_RESET\n"); > > + rc = elan_hw_reset(ts->client); > > + if (rc < 0) { > > + elan_dbg(ts->client, > > + "[ELAN] elan_hw_reset error\n"); > > + return -1; > > + } > > + break; > > + case IOCTL_I2C_INT: > > + put_user(gpio_get_value(ts->intr_gpio), argp); > > + break; > > + case IOCTL_SET_COMMAND: { > > + struct i2c_client *client = ts->client; > > + struct elan_ioctl_data idata; > > + > > + if (copy_from_user(&idata.len, > > + (const void *)arg, > > + sizeof(idata.len))) { > > + dev_err(&client->dev, > > + "IOCTL_GET_COMMAND:%x:%x:%x:%x fail\n", > > + buf[0], buf[1], buf[2], buf[3]); > > + return -EFAULT; > > + } > > + > > + if (copy_from_user(&idata, > > + (const void *)arg, > > + idata.len + sizeof(int))) { > > + dev_err(&client->dev, > > + "IOCTL_GET_COMMAND:%x:%x:%x:%x fail\n", > > + buf[0], buf[1], buf[2], buf[3]); > > + return -EFAULT; > > + } > > + dev_dbg(&ts->client->dev, > > + "IOCTL_SET_COMMAND:%x:%x:%x:%x\n", > > + idata.buf[0], > > + idata.buf[1], > > + idata.buf[2], > > + idata.buf[3]); > > + > > + if (idata.buf[0] != CMD_R_PKT && > > + idata.buf[0] != CMD_W_PKT) > > + return -EFAULT; > > + > > + mutex_lock(&ts->mutex); > > + elants_set_data(ts->client, > > + (const u8 *)idata.buf, > > + idata.len); > > + mutex_unlock(&ts->mutex); > > + } > > + break; > > + case IOCTL_GET_COMMAND: { > > + int rc = 0; > > + struct i2c_client *client = ts->client; > > + struct elan_ioctl_data idata; > > + > > + /* Get command length first */ > > + if (copy_from_user(&idata.len, > > + (const void *)arg, > > + sizeof(idata.len))) { > > + dev_err(&client->dev, > > + "IOCTL_GET_COMMAND:%x:%x:%x:%x fail\n", > > + buf[0], buf[1], buf[2], buf[3]); > > + return -EFAULT; > > + } > > + > > + /* Get command real length then */ > > + if (copy_from_user(&idata, (const void *)arg, > > + idata.len + sizeof(int))) { > > + dev_err(&client->dev, > > + "IOCTL_GET_COMMAND:%x:%x:%x:%x fail\n", > > + buf[0], buf[1], buf[2], buf[3]); > > + return -EFAULT; > > + } > > + > > + if (idata.buf[0] != CMD_R_PKT && idata.buf[0] != CMD_W_PKT) > > + return -EFAULT; > > + > > + pr_info("[ELAN] IOCTL_GET_COMMAND %x:%x:%x:%x\n", > > + idata.buf[0], idata.buf[1], idata.buf[2], idata.buf[3]); > > + > > + mutex_lock(&ts->mutex); > > + > > + set_bit(idx_cmd_handshake, &ts->busy); > > + > > + elants_set_data(client, idata.buf, idata.len); > > + mutex_unlock(&ts->mutex); > > + > > + /* We will wait for non O_NONBLOCK handles until a signal or data */ > > + mutex_lock(&ts->fifo_mutex); > > + > > +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33) > > + while (kfifo_len(ts->fifo) == 0) { > > +#else > > + while (kfifo_len(&ts->fifo) == 0) { > > +#endif > > + mutex_unlock(&ts->fifo_mutex); > > +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33) > > + rc = wait_event_interruptible_timeout( > > + ts->wait, kfifo_len(ts->fifo), > > + msecs_to_jiffies(3000)); > > +#else > > + rc = wait_event_interruptible_timeout( > > + ts->wait, kfifo_len(&ts->fifo), > > + msecs_to_jiffies(3000)); > > +#endif > > Please drop these CPP version magic. Target only current mainline kernel. > > + if (rc <= 0) { > > + rc = -ETIMEDOUT; > > + dev_err(&client->dev, > > + "timeout!! wake_up(ts->wait) \n"); > > + goto err2; > > + } > > + mutex_lock(&ts->fifo_mutex); > > + } > > + if (elan_touch_pull_frame(ts, idata.buf) < 0) { > > + rc = -1; > > + goto err1; > > + } > > + > > +err1: > > + mutex_unlock(&ts->fifo_mutex); > > +err2: > > + clear_bit(idx_cmd_handshake, &ts->busy); > > + > > + dev_dbg(&client->dev, > > + "[ELAN] Leave %s\n", __func__); > > + > > + if (rc < 0) { > > + rc = copy_to_user((void __user *)arg, > > + (void *)&idata, > > + 4+sizeof(len)); > > + return -rc; > > + } > > + > > + elan_dbg(client, > > + "Reponse=%x:%x:%x:%x\n", > > + idata.buf[0], > > + idata.buf[1], > > + idata.buf[2], > > + idata.buf[3]); > > + > > + if (copy_to_user((void __user *)arg, > > + (void *)&idata, > > + sizeof(idata))) > > + return -EFAULT; > > + > > + } > > + break; > > + default: > > + break; > > + } > > + > > + return 0; > > +} > > + > > +static const struct file_operations elan_touch_fops = { > > + .owner = THIS_MODULE, > > + .open = elan_iap_open, > > + .write = elan_iap_write, > > + .read = elan_iap_read, > > + .release = elan_iap_release, > > +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 36) > > + .ioctl = elan_iap_ioctl, > > +#else > > + .unlocked_ioctl = elan_iap_ioctl, > > +#endif > > +}; > > Please drop this. Use sysfs and target mainline. > > +/** > > + * @brief interfaces > > + * provide the hardware and firmware information > > + */ > > +static ssize_t show_fw_version_value( > > + struct device *dev, > > + struct device_attribute *attr, > > + char *buf) > > +{ > > + struct i2c_client *client = container_of(dev, struct i2c_client, dev); > > + struct elants_data *ts = i2c_get_clientdata(client); > > + > > + if (ts->protocol & PRO_UPDATE_FW_MODE) > > + return -1; > > + > > + return sprintf(buf, "%.2x %.2x\n", > > + ts->major_fw_version, > > + ts->minor_fw_version); > > +} > > + > > + > > +static ssize_t show_bc_version_value( > > + struct device *dev, > > + struct device_attribute *attr, > > + char *buf) > > +{ > > + struct i2c_client *client = > > + container_of(dev, struct i2c_client, dev); > > + struct elants_data *ts = i2c_get_clientdata(client); > > + > > + return sprintf(buf, "%.2x %.2x\n", > > + ts->major_bc_version, > > + ts->minor_bc_version); > > +} > > + > > +static ssize_t show_drvver_value( > > + struct device *dev, > > + struct device_attribute *attr, > > + char *buf) > > +{ > > + return sprintf(buf, "%s\n", DRIVER_VERSION); > > +} > > + > > + > > +static ssize_t show_intr_gpio( > > + struct device *dev, > > + struct device_attribute *attr, > > + char *buf) > > +{ > > + int ret = 0; > > + struct i2c_client *client = container_of(dev, struct i2c_client, dev); > > + struct elants_data *ts = i2c_get_clientdata(client); > > + > > + if (ts->protocol & PRO_UPDATE_FW_MODE) > > + return -1; > > + > > + ret = gpio_get_value(ts->intr_gpio); > > + > > + return sprintf(buf, "%d\n", ret); > > +} > > + > > +static ssize_t show_adapter_pkt_rvd( > > + struct device *dev, > > + struct device_attribute *attr, > > + char *buf) > > +{ > > + struct i2c_client *client = > > + container_of(dev, struct i2c_client, dev); > > + struct elants_data *ts = i2c_get_clientdata(client); > > + > > + if (ts->protocol & PRO_UPDATE_FW_MODE) > > + return -1; > > + > > + return sprintf(buf, "irq_received=%ld packet_received=%ld packet_fail=%ld \ > > + mq_hdr_fail=%d, checksum_fail=%x header_fail=%d, \ > > + poll_timer=%d, wdt_reset=%ld\n", > > + ts->irq_received, ts->packet_received, > > + ts->packet_fail, ts->mq_header_fail, > > + ts->checksum_fail, ts->header_fail, > > + ts->drop_frame, ts->wdt_reset); > > +} > > + > > +static ssize_t show_queue_count( > > + struct device *dev, > > + struct device_attribute *attr, > > + char *buf) > > +{ > > + struct i2c_client *client = container_of(dev, struct i2c_client, dev); > > + struct elants_data *ts = i2c_get_clientdata(client); > > + > > + if (ts->protocol & PRO_UPDATE_FW_MODE) > > + return -1; > > + > > + return sprintf(buf, "queue_report_count=%d, report_length=%d\n", > > + ts->mq_header.report_count, ts->mq_header.report_length); > > +} > > + > > + > > +static ssize_t store_power_mode( > > + struct device *dev, > > + struct device_attribute *attr, > > + const char *buf, size_t count) > > +{ > > + int ret = 0; > > + unsigned long val; > > + const char AcMode[] = {0x54, 0x30, 0x00, 0x01}; > > + const char BtMode[] = {0x54, 0x38, 0x00, 0x01}; > > + char cmd[4]; > > + struct i2c_client *client = > > + container_of(dev, struct i2c_client, dev); > > + struct elants_data *ts = i2c_get_clientdata(client); > > + > > + if (ts->protocol & PRO_UPDATE_FW_MODE) > > + return -1; > > + > > + ret = kstrtoul(buf, 10, &val); > > + if (ret) > > + return ret; > > + > > + switch (val) { > > + case 0: > > + memcpy(cmd, AcMode, sizeof(AcMode)); > > + break; > > + case 1: > > + memcpy(cmd, BtMode, sizeof(BtMode)); > > + break; > > + default: > > + return -1; > > + } > > + > > + mutex_lock(&ts->mutex); > > + elants_set_data(ts->client, cmd, sizeof(cmd)); > > + mutex_unlock(&ts->mutex); > > + > > + return count; > > +} > > + > > +static ssize_t show_power_mode( > > + struct device *dev, > > + struct device_attribute *attr, > > + char *buf) > > +{ > > + const char RespCmd[] = {0x53, 0x30, 0x00, 0x01}; > > + char tbuf[4]; > > + struct i2c_client *client = > > + container_of(dev, struct i2c_client, dev); > > + struct elants_data *ts = i2c_get_clientdata(client); > > + > > + if (ts->protocol & PRO_UPDATE_FW_MODE) > > + return -1; > > + > > + > > + mutex_lock(&ts->mutex); > > + set_bit(idx_cmd_handshake, &ts->busy); > > + elants_acqurie_data(ts->client, RespCmd, tbuf, sizeof(RespCmd)); > > + if (tbuf[0] != cmd_header_byte_response) { > > + dev_err(&client->dev, > > + "exception!! %x:%x:%x:%x\n", > > + tbuf[0], tbuf[1], tbuf[2], tbuf[3]); > > + elants_drop_packet(ts); > > + memset(tbuf, 0x0, sizeof(tbuf)); > > + } > > + clear_bit(idx_cmd_handshake, &ts->busy); > > + mutex_unlock(&ts->mutex); > > + > > + return sprintf(buf, "%x:%x:%x:%x\n", > > + tbuf[0], tbuf[1], tbuf[2], tbuf[3]); > > +} > > + > > +static ssize_t show_report_rate( > > + struct device *dev, > > + struct device_attribute *attr, > > + char *buf) > > +{ > > + struct i2c_client *client = > > + container_of(dev, struct i2c_client, dev); > > + struct elants_data *ts = i2c_get_clientdata(client); > > + long int old_frame, new_frame; > > + > > + old_frame = ts->packet_received; > > + ssleep(1); > > + new_frame = ts->packet_received; > > + > > + return sprintf(buf, "%ld\n", new_frame - old_frame); > > +} > > + > > +static ssize_t show_iap_mode( > > + struct device *dev, > > + struct device_attribute *attr, > > + char *buf) > > +{ > > + struct i2c_client *client = > > + container_of(dev, struct i2c_client, dev); > > + struct elants_data *ts = i2c_get_clientdata(client); > > + > > + return sprintf(buf, "%s\n", > > + (ts->iap_mode == 0) ? "Normal" : "Recovery"); > > +} > > + > > +static ssize_t show_recal( > > + struct device *dev, > > + struct device_attribute *attr, > > + char *buf) > > +{ > > + struct i2c_client *client = container_of(dev, struct i2c_client, dev); > > + struct elants_data *ts = i2c_get_clientdata(client); > > + > > + u8 w_flashkey[4] = {0x54, 0xC0, 0xE1, 0x5A}; > > + u8 rek[4] = {0x54, 0x29, 0x00, 0x01}; > > + > > + ts->i2caddr = elan_i2c_master; > > + elants_set_data(client, w_flashkey, 4); > > + elan_msleep(1); > > + elants_set_data(client, rek, 4); > > + > > + return sprintf(buf, "%s\n", "re-K finish"); > > +} > > + > > + > > +static ssize_t show_boot_log( > > + struct device *dev, > > + struct device_attribute *attr, > > + char *buf) > > +{ > > + struct i2c_client *client = container_of(dev, struct i2c_client, dev); > > + struct elants_data *ts = i2c_get_clientdata(client); > > + > > + /* show boot status, allow user cat this log during iap mode enable!! */ > > + > > + return scnprintf(buf, PAGE_SIZE, ts->boot_log); > > +} > > + > > + > > +static DEVICE_ATTR(power_mode, S_IRUGO|S_IWUGO, > > + show_power_mode, store_power_mode); > > +static DEVICE_ATTR(queue_count, S_IRUGO, show_queue_count, NULL); > > +static DEVICE_ATTR(drv_version, S_IRUGO, show_drvver_value, NULL); > > +static DEVICE_ATTR(fw_version, S_IRUGO, show_fw_version_value, NULL); > > +static DEVICE_ATTR(bc_version, S_IRUGO, show_bc_version_value, NULL); > > +static DEVICE_ATTR(ts_packet, S_IRUGO, show_adapter_pkt_rvd, NULL); > > +static DEVICE_ATTR(gpio, S_IRUGO, show_intr_gpio, NULL); > > +static DEVICE_ATTR(report_rate, S_IRUGO, show_report_rate, NULL); > > +static DEVICE_ATTR(boot_log, S_IRUGO, show_boot_log, NULL); > > +static DEVICE_ATTR(iap_mode, S_IRUGO, show_iap_mode, NULL); > > +static DEVICE_ATTR(rek, S_IRUGO, show_recal, NULL); > > + > > + > > + > > +static struct attribute *elan_attributes[] = { > > + &dev_attr_power_mode.attr, > > + &dev_attr_queue_count.attr, > > + &dev_attr_fw_version.attr, > > + &dev_attr_drv_version.attr, > > + &dev_attr_bc_version.attr, > > + &dev_attr_gpio.attr, > > + &dev_attr_ts_packet.attr, > > + &dev_attr_report_rate.attr, > > + &dev_attr_boot_log.attr, > > + &dev_attr_iap_mode.attr, > > + &dev_attr_rek.attr, > > + > > + NULL > > +}; > > + > > + > > +static struct attribute_group elan_attribute_group = { > > + .name = "elants", > > + .attrs = elan_attributes, > > +}; > > + > > + > > +/** > > + * @brief elan_hw_reset - h/w reset. > > + * @param client : our i2c device > > + * > > + * @retval >0 means reset success, \n > > + * otherwise is fail. > > + * > > + */ > > +static int elan_hw_reset(struct i2c_client *client) > > +{ > > + struct elants_data *ts = i2c_get_clientdata(client); > > + int ret; > > + > > + if (ts->rst_gpio < 0) > > + return -1; > > + > > + ret = gpio_direction_output(ts->rst_gpio, 0); > > + if (ret < 0) { > > + pr_err("gpio_direction fail!\n"); > > + return ret; > > + } > > + > > + elan_msleep(2); > > + > > + ret = gpio_direction_output(ts->rst_gpio, 1); > > + if (ret < 0) > > + return ret; > > + > > + /* wait > 10ms to ensure that fw is in IAP mode */ > > + msleep(20); > > + > > + return ret; > > +} > > + > > + > > + > > +/** > > + * @brief elan_ts_poll - polling intr pin status. > > + * @param client : our i2c device > > + * > > + * @retval 0 means intr pin is low, \n > > + * otherwise is high. > > + * > > + * polling intr pin untill low and the maximus wait time is \b 200ms. > > + */ > > +static int elan_ts_poll(struct i2c_client *client) > > +{ > > + struct elants_data *ts = i2c_get_clientdata(client); > > + int status = 0, retry = 20; > > + > > + do { > > + status = gpio_get_value(ts->intr_gpio); > > + elan_dbg(client, > > + "%s: status = %d\n", __func__, status); > > + retry--; > > + mdelay(10); > > + } while (status != 0 && retry > 0); > > + > > + elan_dbg(client, > > + "%s: poll interrupt status %s\n", > > + __func__, status == 1 ? "high" : "low"); > > + return (status == 0 ? 0 : -ETIMEDOUT); > > +} > > + > > +/** > > + * @brief \b elan_ts_set_data - set command to TP. > > + * @param client : our i2c device > > + * @param data : command or data which will send to TP. > > + * @param len : command length usually. > > + * > > + * set command to our TP. > > + */ > > +static int elants_set_data(struct i2c_client *client, > > + const u8 *data, size_t len) > > +{ > > + struct elants_data *ts = i2c_get_clientdata(client); > > + struct i2c_adapter *adap = client->adapter; > > + struct i2c_msg msg; > > + int rc = 0; > > + > > + dev_dbg(&client->dev, "[ELAN] Enter: %s\n", __func__); > > + elan_dbg(client, > > + "dump cmd: %02x, %02x, %02x, %02x, addr=%x\n", > > + data[0], data[1], data[2], data[3], ts->i2caddr); > > + > > + mutex_lock(&ts->tr_mutex); > > + > > + msg.addr = ts->i2caddr; > > + msg.flags = ts->client->flags & I2C_M_TEN; > > + msg.len = len; > > + msg.buf = (char *)data; > > + > > + rc = i2c_transfer(adap, &msg, 1); > > + if (rc != 1) > > + dev_err(&ts->client->dev, > > + "[ELAN] i2c_transfer write fail, rc=%d\n", rc); > > + > > + mutex_unlock(&ts->tr_mutex); > > + > > + /* If everything went ok (i.e. 1 msg transmitted), return #bytes > > + transmitted, else error code. */ > > + return (rc == 1) ? len : rc; > > + > > +} > > + > > +/** > > + * @brief \b elan_ts_get_data - set command to TP. > > + * @param client : our i2c device > > + * @param data : data to be received from TP. > > + * @param len : command length usually. > > + * > > + * get data from our TP. > > + */ > > +static int elants_get_data( > > + struct i2c_client *client, > > + const u8 *buf, > > + size_t len) > > +{ > > + struct elants_data *ts = i2c_get_clientdata(client); > > + struct i2c_adapter *adap = client->adapter; > > + struct i2c_msg msg; > > + int rc = 0; > > + > > + dev_dbg(&client->dev, > > + "[ELAN] Enter: %s id:0x%x\n", __func__, ts->i2caddr); > > + > > + mutex_lock(&ts->tr_mutex); > > + > > + msg.addr = ts->i2caddr; > > + msg.flags = client->flags & I2C_M_TEN; > > + msg.flags |= I2C_M_RD; > > + msg.len = len; > > + msg.buf = (char *)buf; > > + > > + rc = i2c_transfer(adap, &msg, 1); > > + if (rc != 1) > > + dev_err(&client->dev, > > + "[ELAN] i2c_transfer read fail, rc=%d\n", rc); > > + > > + mutex_unlock(&ts->tr_mutex); > > + > > + /* If everything went ok (i.e. 1 msg transmitted), return #bytes > > + transmitted, else error code. */ > > + return (rc == 1) ? len : rc; > > +} > > + > > +/** > > + * @brief \b elants_is_iap - is it in iap mode ? > > + * @param client : our i2c device > > + * @param addr : i2c address > > + * > > + * check whether fw currently is in iap. > > + * @return : > > + * < 0 :normal mode > > + * > 0 :iap mode or abnormal. > > + */ > > +static int elants_is_iap( > > + struct i2c_client *client, > > + u16 addr) > > +{ > > + int rc; > > + uint8_t buf_recv[4] = {0}; > > + struct elants_data *ts = i2c_get_clientdata(client); > > + > > + ts->i2caddr = addr; > > + rc = elants_get_data(client, buf_recv, 4); > > + if ((rc < 0) || memcmp(buf_recv, iniap_packet, 4)) { > > + dev_err(&client->dev, > > + "[elan] %s: ID 0x%x can't boot IAP!\n", > > + __func__, addr); > > + rc = -EINVAL; > > + } > > + > > + ts->i2caddr = elan_i2c_master; > > + > > + return rc; > > +} > > + > > +static int elants_boot( > > + struct i2c_client *client, > > + u16 addr, > > + elan_boot_t type) > > +{ > > + int rc; > > + struct elants_data *ts = i2c_get_clientdata(client); > > + uint8_t command[2][4] = { > > + {0x4D, 0x61, 0x69, 0x6E}, /* normal_command */ > > + {0x45, 0x49, 0x41, 0x50}, /* iap_command */ > > + }; > > + > > + ts->i2caddr = addr; > > + rc = elants_set_data(client, command[(int32_t)type], 4); > > + if (rc != 4) { > > + if (type == E_BOOT_IAP) > > + dev_err(&client->dev, > > + "[elan] Boot IAP fail, error=%d\n", > > + rc); > > + else > > + dev_dbg(&client->dev, > > + "[elan] Boot normal fail, error=%d\n", > > + rc); > > + ts->i2caddr = elan_i2c_master; > > + return -EINVAL; > > + } > > + pr_info("[elan] Boot success -- 0x%x\n", addr); > > + ts->i2caddr = elan_i2c_master; > > + return 0; > > +} > > + > > +static int elants_enter_iap(struct i2c_client *client) > > +{ > > + int rc = 0, i; > > + struct elants_data *ts = i2c_get_clientdata(client); > > + > > + elan_hw_reset(client); > > + > > + /* Boot devices to IAP mode */ > > + for (i = 0; i < CHIP_NUM; i++) { > > + rc = elants_boot(client, tp_device_addr[i], E_BOOT_IAP); > > + if (rc < 0) > > + return rc; > > + } > > + > > + elan_msleep(10); > > + > > + /* Check if devices can enter IAP mode */ > > + for (i = 0; i < CHIP_NUM; i++) { > > + rc = elants_is_iap(client, tp_device_addr[i]); > > + if (rc < 0) > > + return rc; > > + } > > + > > + ts->iap_mode = IAP_MODE_ENABLE; > > + ts->protocol = ts->protocol | PRO_UPDATE_FW_MODE; > > + ts->i2caddr = elan_i2c_master; > > + > > + return rc; > > +} > > + > > + > > +/** > > + * @brief \b elan_ts_async_recv_data - get TP status > > + * @param client : our i2c device > > + * @param cmd : asking command > > + * @param buf : result > > + * @param size : command length usually. > > + * > > + * set command type and TP will return its status in buf. > > + */ > > +static int elants_async_recv_data( > > + struct i2c_client *client, > > + const uint8_t *cmd, > > + uint8_t *buf, size_t tx_size, > > + size_t rx_size) > > +{ > > + struct elants_data *ts = i2c_get_clientdata(client); > > + dev_dbg(&client->dev, > > + "[ELAN] Enter: %s\n", __func__); > > + > > + if (buf == NULL) > > + return -EINVAL; > > + > > + mutex_lock(&ts->tr_mutex); > > + if ((i2c_master_send(client, cmd, tx_size)) != tx_size) { > > + dev_err(&client->dev, > > + "%s: i2c_master_send failed\n", __func__); > > + goto fail; > > + } > > + > > + if (unlikely(elan_ts_poll(client) < 0)) > > + goto fail; > > + else { > > + if (i2c_master_recv(client, buf, rx_size) != rx_size) > > + goto fail; > > + mutex_unlock(&ts->tr_mutex); > > + } > > + > > + return 0; > > + > > +fail: > > + mutex_unlock(&ts->tr_mutex); > > + return -EINVAL; > > +} > > + > > +/** > > + * @brief \b __get_bc_version - probe /INT to get new/old BC > > + * @param client : our i2c device > > + * > > + * 1 : new bootcode > > + * 0 : old bootcode > > + */ > > +static int __get_bc_version(struct i2c_client *client) > > +{ > > + struct elants_data *ts = i2c_get_clientdata(client); > > + > > + /* wait 150ms to probe /INT and get old-BC, new-BC status */ > > + msleep(150); > > + > > + if (gpio_get_value(ts->intr_gpio) == 0) { > > + /* Old BC */ > > + pr_info("[ELAN]detect intr=>Old FW\n"); > > + old_bootcode = true; > > + } else { > > + /* New BC */ > > + pr_info("[elan]detect intr=>New FW\n"); > > + old_bootcode = false; > > + } > > + > > + return old_bootcode; > > +} > > + > > + > > +/** > > + * @brief __hello_packet_handler - hadle hello packet. > > + * @param client : our i2c device > > + * > > + * @return { >0 means success, > > + * otherwise fail. } > > + * > > + * Normal hello packet is {0x55, 0x55, 0x55, 0x55} > > + * recovery mode hello packet is {0x55, 0x55, 0x80, 0x80} > > + */ > > +static int __hello_packet_handler(struct i2c_client *client) > > +{ > > + int rc = 0, tries = 5; > > + uint8_t buf_recv[4] = {0}; > > + struct elants_data *ts = i2c_get_clientdata(client); > > + > > + > > +retry: /* wait INT for 1sec */ > > + rc = elan_ts_poll(client); > > + if (rc < 0) { > > + dev_err(&client->dev, > > + "%s: poll failed!\n", ELAN_DEV_NAME); > > + if (tries-- > 0) > > + goto retry; > > + } > > + > > + rc = elants_get_data(client, buf_recv, 4); > > + > > + elan_dbg(client, > > + "[ELAN] rc = %d Hello Packet: [0x%.2x 0x%.2x 0x%.2x 0x%.2x]\n", > > + rc, buf_recv[0], buf_recv[1], buf_recv[2], buf_recv[3]); > > + > > + if (rc != 4) { > > + dev_err(&client->dev, > > + "[ELAN] %s: Try recovery because of no hello\n", > > + __func__); > > + > > + /* force TP FW into IAP mode. */ > > + elants_enter_iap(client); > > + return -EINVAL; > > + } > > + > > + /* new iap main-flow recovery mechanism 20120518*/ > > + if (memcmp(buf_recv, hello_packet, 4) || > > + elants_is_iap(client, elan_i2c_slave1) > 0) { > > + dev_err(&client->dev, > > + "[ELAN] got mainflow recovery message\n"); > > + elants_enter_iap(client); > > + return -EINVAL; > > + } > > + > > + ts->i2caddr = elan_i2c_master; > > + > > + return rc; > > +} > > + > > +static int __fw_packet_handler(struct i2c_client *client) > > +{ > > + struct elants_data *ts = i2c_get_clientdata(client); > > + int rc, tries = 3; > > + const uint8_t cmd[] = {CMD_R_PKT, 0x00, 0x00, 0x01}; > > + uint8_t buf_recv[4] = {0x0}; > > + > > + /* Command not support in IAP recovery mode */ > > + if (ts->protocol & PRO_UPDATE_FW_MODE) > > + return 0; > > +retry: > > + rc = elants_acqurie_data(client, cmd, buf_recv, 4); > > + if (rc < 0) > > + return rc; > > + > > + if (buf_recv[0] == CMD_S_PKT) { > > + ts->major_fw_version = ((buf_recv[1] & 0x0f) << 4) | > > + ((buf_recv[2] & 0xf0) >> 4); > > + ts->minor_fw_version = ((buf_recv[2] & 0x0f) << 4) | > > + ((buf_recv[3] & 0xf0) >> 4); > > + > > + /* For 1+2, support this function since Solution version 0.3E(2012/2/23) */ > > + if ((ts->major_fw_version == 0x00 && > > + ts->minor_fw_version == 0x00) || > > + (ts->major_fw_version == 0xFF && > > + ts->minor_fw_version == 0xFF)) { > > + dev_err(&client->dev, > > + "\n\n[ELAN] FW version is empty, suggest IAP ELAN > chip\n\n"); > > + return -EINVAL; > > + } > > + > > + elan_dbg(client, > > + "[ELAN] TOUCH MAJOR FW VERSION 0x%02x\n", > > + ts->major_fw_version); > > + elan_dbg(client, > > + "[ELAN] TOUCH MINOR FW VERSION 0x%02x\n", > > + ts->minor_fw_version); > > + } else { > > + if (tries > 0) { > > + tries--; > > + goto retry; > > + } > > + ts->major_fw_version = 0xff; > > + ts->minor_fw_version = 0xff; > > + dev_err(&client->dev, > > + "\n\n[ELAN] FW version is empty, suggest IAP ELAN chip\n\n"); > > + return -EINVAL; > > + > > + } > > + > > + return 0; > > +} > > + > > +static int __touch_get_resolution(struct i2c_client *client) > > +{ > > + struct elants_data *ts = i2c_get_clientdata(client); > > + int rc; > > + uint8_t buf_recv[17] = {0x0}; > > + const uint8_t get_resolution_cmd[] = { > > + 0x5B, 0x00, 0x00, 0x00, 0x00, 0x00 > > + }; > > + > > + /* Command not support in IAP recovery mode */ > > + if (ts->protocol & PRO_UPDATE_FW_MODE) > > + return 0; > > + > > + rc = elants_async_recv_data(client, get_resolution_cmd, buf_recv, > > + sizeof(get_r esolution_cmd), sizeof(buf_recv)); > > + if (rc < 0) > > + return -rc; > > + > > + > > + elan_dbg(client, > > + "[ELAN] %x:%x:%x, :%x:%x:%x, %d\n", > > + buf_recv[2], buf_recv[6], buf_recv[10], > > + buf_recv[3], buf_recv[7], buf_recv[0], rc); > > + > > + if (buf_recv[0] != 0x9B) > > + return -EINVAL; > > + > > + elan_dbg(client, "[ELAN] %x:%x:%x, :%x:%x:%x, %d\n", > > + buf_recv[2], buf_recv[6], buf_recv[10], > > + buf_recv[3], buf_recv[7], buf_recv[11], rc); > > + > > + > > + ts->rows = (buf_recv[2] + buf_recv[6] + buf_recv[10]); > > + ts->cols = (buf_recv[3] + buf_recv[7] + buf_recv[11]); > > + > > + elan_dbg(client, "[ELAN] %x:%x:%x, :%x:%x:%x\n", buf_recv[2], > > + buf_recv[6], buf_recv[10], > > + buf_recv[3], buf_recv[7], buf_recv[11]); > > + > > + if (ts->rows < 2 || ts->cols < 2) { > > + dev_err(&client->dev, > > + "[ELAN] Invalid resolution (%d, %d)\n", > > + ts->rows, ts->cols); > > + > > + /* set default resolution if TP information is wrong */ > > + ts->rows = ELAN_X_MAX; > > + ts->cols = ELAN_Y_MAX; > > + > > + rc = ret_fail; > > + } > > + > > + /* translate trace number to TSP resolution */ > > + ts->cols = ELAN_TS_RESOLUTION(ts->cols); > > + ts->rows = ELAN_TS_RESOLUTION(ts->rows); > > + > > + elan_dbg(client, > > + "[ELAN] resolution rows = 0x%02x, cols = 0x%02x\n", > > + ts->rows, ts->cols); > > + > > + return 0; > > +} > > + > > + > > +/** > > + * elan_touch_get_bc_ver - obtain bootcode data from device > > + * @client: the interface we are querying > > + > > + * > > + * Send a bootcode version command and fill the results into the > > + * elan device structures. Caller must hold the mutex > > + * > > + > > + * Returns 0 or an error code > > + */ > > +static int __elan_touch_get_bc_ver(struct i2c_client *client) > > +{ > > + struct elants_data *ts = i2c_get_clientdata(client); > > + const u8 get_bc_ver_cmd[] = {0x53, 0x10, 0x00, 0x01}; > > + u8 buf_recv[4]; > > + int rc; > > + > > + /* Command not support in IAP recovery mode */ > > + if (ts->protocol & PRO_UPDATE_FW_MODE) > > + return 0; > > + > > + rc = elants_acqurie_data(client, get_bc_ver_cmd, > > + buf_recv, sizeof(buf_recv)); > > + if (rc < 0) { > > + dev_err(&client->dev, > > + "elan_ts_acqurie_data failed: get_bc_ver\n"); > > + return rc; > > + } > > + > > + ts->major_bc_version = (((buf_recv[1] & 0x0f) << 4) | > > + ((buf_recv[2]&0xf0) >> 4)); > > + ts->minor_bc_version = (((buf_recv[2] & 0x0f) << 4) | > > + ((buf_recv[3]&0xf0) >> 4)); > > + > > + elan_dbg(client, > > + "ELAN TOUCH MAJOR BC VERSION 0x%02x\n", > > + ts->major_bc_version); > > + elan_dbg(client, > > + "ELAN TOUCH MINOR BC VERSION 0x%02x\n", > > + ts->minor_bc_version); > > + > > + return 0; > > +} > > + > > +static int __elan_fastboot(struct i2c_client *client, int *count) > > +{ > > + int rc = 0; > > + > > + rc = elants_boot(client, elan_i2c_slave1, E_BOOT_NORM); > > + if (rc < 0) { > > + if (*count > 0) > > + return -EAGAIN; > > + return -1; > > + } > > + > > + rc = elants_boot(client, elan_i2c_master, E_BOOT_NORM); > > + if (rc < 0) { > > + if (*count > 0) > > + return -EAGAIN; > > + return -1; > > + } > > + > > + msleep(100); > > + > > + return rc; > > +} > > + > > +/** > > + * @brief elan_open - open elan device > > + * @param input : input device > > + * > > + */ > > +static int elan_open(struct input_dev *input) > > +{ > > + struct elants_data *ts = input_get_drvdata(input); > > + > > + dev_err(&ts->client->dev, > > + "[ELAN] Enter %s\n", __func__); > > + > > + /* wait probe work_func done */ > > + while ((ts->status & STA_INIT4) == 0) > > + elan_msleep(1); > > + > > + return 0; > > +} > > + > > +/** > > + * @brief elan_close - close input device > > + * @param input : input device > > + * > > + */ > > +static void elan_close(struct input_dev *input) > > +{ > > + struct elants_data *ts = input_get_drvdata(input); > > + > > + dev_err(&ts->client->dev, > > + "[ELAN] Enter %s\n", __func__); > > + > > + return; > > +} > > + > > + > > +/** > > + * @brief \b elan_ts_setup - initialization process. > > + * @param client : our i2c client > > + * > > + * set our TP up > > + * -# reset > > + * -# hello packet > > + * -# fw version > > + * -# TP info (resolution) > > + * > > + */ > > +static int __devinit elants_setup(struct i2c_client *client) > > +{ > > + struct elants_data *ts = i2c_get_clientdata(client); > > + int rc, tries = 5, count = 5; > > + int len = 0; > > + bool fastboot = true; > > + > > +retry: > > + /*! Reset */ > > + elan_hw_reset(client); > > + > > + ts->rx_size = queue_header_size; > > + > > + /* New BootCode */ > > + if (fastboot == true) { > > + rc = __elan_fastboot(client, &count); > > + if (rc < 0) { > > + if (rc == -EAGAIN && --count > 0) > > + goto retry; > > + else { > > + len += sprintf(ts->boot_log + len, > > + "serious bug, BC may be broken!!\n"); > > + return -1; > > + } > > + } > > + fastboot = 0; > > + } else { > > + /* Wait bootcode timeout 1 second + > > + Main-flow initial ~100ms */ > > + ssleep(2); > > + } > > + > > + /*! - elan hello packet init */ > > + rc = __hello_packet_handler(client); > > + if (rc < 0) { > > + /* Wrong hello_packet or polling fail, retry */ > > + if ((rc == -EINVAL || rc == -ETIMEDOUT) && --tries > 0) { > > + dev_err(&client->dev, > > + "[ELAN] retries=%d, rc=%d\n", > > + tries, rc); > > + goto retry; > > + } > > + > > + len += sprintf(ts->boot_log + len, > > + "retry=%d polling time-out\n", 5-tries); > > + > > + dev_err(&client->dev, > > + "hello packet error.\n"); > > + /* Go through down*/ > > + > > + /* if iap mode enable, return and wait for IAP */ > > + if (ts->iap_mode == IAP_MODE_ENABLE) { > > + len += sprintf(ts->boot_log + len, "IAP mode enable\n"); > > + return rc; > > + } > > + } > > + > > + elan_dbg(client, > > + "__hello_packet_handler ...\n"); > > + > > + /*! - elan fw version */ > > + rc = __fw_packet_handler(client); > > + if (rc < 0) { > > + dev_err(&client->dev, "firmware checking error.\n"); > > + len += sprintf(ts->boot_log+len, "fw_packet_error=%x:%x\n", > > + ts->major_fw_version, ts->minor_fw_version); > > + > > + if (rc == -EINVAL) { > > + len += sprintf(ts->boot_log+len, > > + "FW version is empty, IAP enable!!\n"); > > + ts->protocol = ts->protocol | PRO_UPDATE_FW_MODE; > > + ts->iap_mode = IAP_MODE_ENABLE; > > + } > > + > > + /* Go through down*/ > > + } > > + > > + elan_dbg(client, "__fw_packet_handler...\n"); > > + > > + /*! - elan TP information */ > > + rc = __touch_get_resolution(client); > > + if (rc < 0) { > > + dev_err(&client->dev, > > + "TP information checking error.\n"); > > + len += sprintf(ts->boot_log+len, > > + "touch_get_resolution=%x:%x\n", > > + ts->rows, ts->cols); > > + /* Go through down*/ > > + } > > + > > + elan_dbg(client, > > + "__touch_get_resolution...\n"); > > + > > + > > + /* Get TS BootCode version */ > > + rc = __elan_touch_get_bc_ver(client); > > + if (rc < 0) { > > + dev_err(&client->dev, > > + "TP get BC version error.\n"); > > + len += sprintf(ts->boot_log+len, > > + "touch_get_BC_ver=%x:%x\n", > > + ts->major_bc_version, ts->major_bc_version); > > + /* Go through down*/ > > + } > > + > > + if (len == 0) > > + len += sprintf(ts->boot_log, "boot success!!\n"); > > + > > + return rc; > > + > > +} > > + > > + > > +static int elants_get_power_state(struct i2c_client *client) > > +{ > > + int rc = 0; > > + const uint8_t cmd[] = {CMD_R_PKT, 0x50, 0x00, 0x01}; > > + uint8_t buf[4], power_state; > > + > > + rc = elants_acqurie_data(client, cmd, buf, 4); > > + if (rc) > > + return rc; > > + > > + power_state = buf[1]; > > + elan_dbg(client, > > + "dump repsponse: %0x\n", power_state); > > + power_state = (power_state & PWR_STATE_MASK) >> 3; > > + elan_dbg(client, > > + "power state = %s\n", > > + power_state == PWR_STATE_DEEP_SLEEP ? > > + "Deep Sleep" : "Normal/Idle"); > > + > > + return power_state; > > +} > > + > > + > > +/** > > + * @brief \b elan_ts_recv_data - received TP data > > + * @param client: our i2c device > > + * @param buf : buffer for put received data > > + * > > + * received data from TP device. > > + */ > > +static int elants_recv_data(struct i2c_client *client, uint8_t *buf) > > +{ > > + struct elants_data *ts = i2c_get_clientdata(client); > > + int rc = 0, bytes_to_recv; > > + > > + dev_dbg(&client->dev, > > + "[ELAN] Enter %s\n", __func__); > > + > > + if (buf == NULL) > > + return -EINVAL; > > + > > + mutex_lock(&ts->tr_mutex); > > + > > + bytes_to_recv = ts->rx_size; > > + rc = i2c_master_recv(client, buf, bytes_to_recv); > > + > > + dev_dbg(&client->dev, > > + "[ELAN] %d:%d:%x:%x, addr=%x\n", bytes_to_recv, rc, > > + buf[0], buf[34], client->addr); > > + dev_dbg(&client->dev, > > + "[ELAN] %x:%x:%x:%x:%x:%x\n", buf[0], buf[1], buf[2], > > + buf[3], buf[4], buf[5]); > > + > > + if (rc != bytes_to_recv) { > > + dev_err(&client->dev, > > + "%s: i2c_master_recv error?!\n", > > + __func__); > > + rc = -EINVAL; > > + } > > + mutex_unlock(&ts->tr_mutex); > > + > > + return rc; > > +} > > + > > +/** > > + * elan_touch_pull_frame - pull a frame from the fifo > > + * @ed: our elan touch device > > + * @ehr: return buffer for the header > > + * @buf: data buffer > > + * > > + * Pulls a frame from the FIFO into the provided ehr and data buffer. > > + * The data buffer must be at least cmd_response_len bytes long. > > + */ > > +static int elan_touch_pull_frame(struct elants_data *ts, u8 *buf) > > +{ > > + dev_dbg(&ts->client->dev, > > + "[ELAN] Enter %s\n", __func__); > > + > > +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33) > > + WARN_ON(kfifo_get(ts->fifo, buf, cmd_response_len) > > + != cmd_response_len); > > +#else > > + WARN_ON(kfifo_out_locked(&ts->fifo, buf, cmd_response_len, > > + &ts->rx_kfifo_lock) > > + != cmd_response_len); > > +#endif > > Target mainline. > > + return cmd_response_len; > > +} > > + > > + > > +/** > > + * elan_touch_fifo_clean_old - Make room for new frames > > + * @ed: our elan touch device > > + * @room: space needed > > + * > > + * Empty old frames out of the FIFO until we can fit the new one into > > + * the other end. > > + */ > > +static void elan_touch_fifo_clean_old(struct elants_data *ts, int room) > > +{ > > + u8 buffer[cmd_response_len]; > > + dev_dbg(&ts->client->dev, > > + "[ELAN] Enter %s\n", __func__); > > + > > +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33) > > + while (kfifo_len(ts->fifo) + room >= FIFO_SIZE) > > + elan_touch_pull_frame(ts, buffer); > > +#else > > + while (kfifo_len(&ts->fifo) + room >= FIFO_SIZE) > > + elan_touch_pull_frame(ts, buffer); > > +#endif > > Mainline. > > +} > > + > > + > > +/** @brief \b elan_ts_GetRepoInfo - parse Multi-queue report header > > + * @param client : our i2c device > > + * @param buf : buffer data > > + * > > + * parsing report header and get data length. > > + * > > + */ > > +static int elants_GetRepoInfo(struct i2c_client *client, uint8_t *buf) > > +{ > > + struct elants_data *ts = i2c_get_clientdata(client); > > + struct multi_queue_header *buff = (struct multi_queue_header *)buf; > > + const u8 wait_packet[4] = {0x64, 0x64, 0x64, 0x64}; > > + int times = 10, rc = 0; > > + > > + switch (buf[idx_finger_header]) { > > + case cmd_header_byte_hello: > > + if (!memcmp(buf, hello_packet, 4)) > > + ts->wdt_reset++; > > + return ret_cmdrsp; > > + case cmd_header_byte_response: > > + /* Queue the data, using the fifo lock to serialize the multiple > > + accesses to the FIFO */ > > + elan_dbg(client, > > + "[ELAN] recv cmd_header_byte_response\n"); > > + > > + mutex_lock(&ts->fifo_mutex); > > +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33) > > + if (kfifo_len(ts->fifo) + cmd_response_len >= FIFO_SIZE) > > +#else > > + if (kfifo_len(&ts->fifo) + cmd_response_len >= FIFO_SIZE) > > + > > +#endif > > + /* Make room, make room */ > > + elan_touch_fifo_clean_old(ts, cmd_response_len); > > + /* Push the data */ > > +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33) > > + kfifo_put(ts->fifo, buf, cmd_response_len); > > +#else > > + kfifo_in_locked(&ts->fifo, buf, > > + cmd_response_len, &ts->rx_kfifo_lock); > > +#endif > > Alse mainline. > > + mutex_unlock(&ts->fifo_mutex); > > + > > + elan_dbg(client, > > + "[ELAN] wake_up [%02x:%02x:%02x:%02x]\n", > > + buf[0], buf[1], buf[2], buf[3]); > > + wake_up(&ts->wait); > > + return ret_cmdrsp; > > + /* Buffer mode header */ > > + case queue_header_byte_normal: > > + elan_dbg(client, > > + "[ELAN] report_count=%d report_len=%d\n", > > + buff->report_count, buff->report_length); > > + if (likely(buff->report_count <= 3)) { > > + ts->mq_header.report_count = buff->report_count; > > + ts->mq_header.report_length = buff->report_length; > > + ts->rx_size = ts->mq_header.report_length; > > + } else > > + return ret_fail; > > + > > + break; > > + case queue_header_byte_wait: > > + dev_err(&client->dev, > > + "========queue_header_byte_wait %x:%x:%x:%x========\n", > > + buf[0], buf[1], buf[2], buf[3]); > > + /*! BUGFIX: buff[0] might be wrong (0x63), check buff[1 ~ 3] is enough*/ > > + if (!memcmp(buf+1, &wait_packet[1], 3)) { > > + do { > > + udelay(30); > > + elants_recv_data(client, (uint8_t *)buff); > > + } while (buff->packet_id != queue_header_byte_normal && > > + --times > 0); > > + if (times > 0) > > + rc = elants_GetRepoInfo(client, (uint8_t *)buff); > > + else > > + return ret_fail; > > + elan_dbg(client, > > + "Detect Wait_Header:rx_size=%d, report_count=%d \ > > + report_len=%d\n", ts->rx_size, > > + ts->mq_header.report_count, > > + ts->mq_header.report_length); > > + > > + } else > > + dev_err(&client->dev, > > + "[ELAN] ERROR!! wait header:%x:%x:%x:%x\n", > > + buf[0], buf[1], buf[2], buf[3]); > > + break; > > + /* Not buffer mode, it's single word mode */ > > + case queue_header_byte_Single: > > + ts->mq_header.report_count = 1; > > + ts->mq_header.report_length = IDX_PACKET_SIZE_WIDTH; > > + ts->rx_size = ts->mq_header.report_length; > > + return ts->rx_size; > > + break; > > + default: > > + dev_err(&client->dev, > > + "unknown multi-queue command!! --%x %x:%x:%x--\n", > > + buf[0], buf[1], buf[2], buf[3]); > > + ts->mq_header_fail++; > > + > > + /* If glitch causes frame error, drop all finger report */ > > + ts->rx_size = queue_packet_max_len; > > + elants_recv_data(client, (uint8_t *)buff); > > + return ret_fail; > > + } > > + > > + return ts->rx_size; > > +} > > + > > + > > +/** @brief \b elan_touch_checksum - Add for checksum mechanism > > + * @param client : our i2c device > > + * @param buf : buffer data > > + * > > + * caculating checksum for make sure all data validity. > > + * > > + */ > > +static int elan_touch_checksum(struct i2c_client *client, u8 *buf) > > +{ > > + u8 i = 0, checksum = 0; > > + struct elants_data *ts = i2c_get_clientdata(client); > > + > > + /*! FIXME: checksum wasn't including width byte */ > > + for (i = 0; i < IDX_PACKET_SIZE_WIDTH - 6; i++) > > + checksum = checksum + buf[i]; > > + > > + ts->checksum_correct = checksum; > > + > > + if (checksum != buf[idx_finger_width_checksum]) { > > + ts->checksum_fail++; > > + dev_err(&client->dev, > > + "elan touch checksum fail: %02x:%02x\n", > > + checksum, buf[idx_finger_width_checksum]); > > + return -EFAULT; > > + } > > + > > + return 0; > > +} > > + > > +/** > > + * @brief \b elan_touch_parse_fid - parse the 10 fid bits > > + * @param data : the input bit stream > > + * @param fid : an array of fid values > > + * > > + * Unpack the 10 bits into an array. > > + * > > + * FIXME: Review whether we can't just use << operators after making > > + * sure the bits are native endian ? > > + */ > > +static inline void elan_touch_parse_fid(u8 *data, u8 *fid) > > +{ > > + fid[0] = (data[0] & 0x01); > > + fid[1] = (data[0] & 0x02); > > + fid[2] = (data[0] & 0x04); > > + fid[3] = (data[0] & 0x08); > > + fid[4] = (data[0] & 0x10); > > + fid[5] = (data[0] & 0x20); > > + fid[6] = (data[0] & 0x40); > > + fid[7] = (data[0] & 0x80); > > + fid[8] = (data[1] & 0x10); > > + fid[9] = (data[1] & 0x20); > > +} > > + > > +/** > > + * @brief \b elan_touch_parse_wid - parse the 10 wid bits > > + * @param data : the input bit stream > > + * @param wid : an array of width level > > + * > > + * Unpack the 10 bits into an array. > > + * > > + */ > > +static inline void elan_touch_parse_wid(u8 *data, u8 *wid) > > +{ > > + wid[0] = (data[0] >> 4); > > + wid[1] = (data[0] & 0x0f); > > + wid[2] = (data[1] >> 4); > > + wid[3] = (data[1] & 0x0f); > > + wid[4] = (data[2] >> 4); > > + wid[5] = (data[2] & 0x0f); > > + wid[6] = (data[3] >> 4); > > + wid[7] = (data[3] & 0x0f); > > + wid[8] = (data[4] >> 4); > > + wid[9] = (data[4] & 0x0f); > > +} > > + > > + > > +static inline int elants_parse_xy( > > + uint8_t *data, > > + uint16_t *x, > > + uint16_t *y) > > +{ > > + *x = *y = 0; > > + > > + *x = (data[0] & 0xf0); > > + *x <<= 4; > > + *x |= data[1]; > > + > > + *y = (data[0] & 0x0f); > > + *y <<= 8; > > + *y |= data[2]; > > + > > + return 0; > > +} > > + > > +/* transition stage for lookup by table, maybe update finger report > > + using by Win8 50Byte format that having actual value for X, Y width */ > > +static inline int elan_lookup_wid( > > + u8 data, > > + u16 *w, > > + u16 *h) > > +{ > > + static u16 pre_w, pre_h, cur_w, cur_h; > > + const u8 width_lookup_table[15][2] = { > > + {3, 2}, {3, 2}, {6, 3}, > > + {6, 3}, {10, 3}, {15, 4}, > > + {15, 5}, {15, 5}, {15, 5}, > > + {15, 5}, {15, 5}, {15, 5}, > > + {15, 5}, {15, 5}, {15, 5}, > > + }; > > + > > + cur_w = width_lookup_table[data][0] * 17; > > + cur_h = width_lookup_table[data][1] * 17; > > + > > + /* IIR to balance w, h vaule, don't jitter too much */ > > + *w = (cur_w + pre_w) >> 1; > > + *h = (cur_h + pre_h) >> 1; > > + > > + pre_w = cur_w; > > + pre_h = cur_h; > > + > > + return 0; > > +} > > + > > +static int elan_mt_compute_slot(struct mt_device *td) > > +{ > > + int i; > > + for (i = 0; i < td->maxcontacts; ++i) { > > + if (td->slots[i].contactid == td->curdata.contactid && > > + td->slots[i].touch_state) > > + return i; > > + } > > + for (i = 0; i < td->maxcontacts; ++i) { > > + if (!td->slots[i].seen_in_this_frame && > > + !td->slots[i].touch_state) > > + return i; > > + } > > + /* should not occurs. If this happens that means > > + * that the device sent more touches that it says > > + * in the report descriptor. It is ignored then. */ > > + return -1; > > +} > > + > > +/* > > + * this function is called when a whole contact has been processed, > > + * so that it can assign it to a slot and store the data there > > + */ > > +static void elan_mt_complete_slot(struct mt_device *td) > > +{ > > + td->curdata.seen_in_this_frame = true; > > + if (td->curvalid) { > > + int slotnum = elan_mt_compute_slot(td); > > + > > + if (slotnum >= 0 && slotnum < td->maxcontacts) > > + td->slots[slotnum] = td->curdata; > > + } > > + td->num_received++; > > +} > > + > > +/* > > + * this function is called when a whole packet has been received and processed, > > + * so that it can decide what to send to the input layer. > > + */ > > + > > +#if (MT_TYPE_B == 0) > > +static void elan_mt_emit_event( > > + struct mt_device *td, > > + struct input_dev *input) > > +{ > > + struct elants_data *ts = > > + container_of(td, struct elants_data, td); > > + int i; > > + > > + for (i = 0; i < td->maxcontacts; ++i) { > > + struct mt_slot *s = &(td->slots[i]); > > + if (!s->seen_in_this_frame) { > > + if (s->touch_state) { > > + s->touch_state = false; > > +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 39) > > + /* ingore finger-up event since TF1 seems having problem */ > > + input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, > s->touch_state); > > + input_mt_sync(input); > > +#endif > > + } > > + s->seen_in_this_frame = false; > > + continue; > > + } > > + > > + input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, s->touch_state); > > + > > + if (s->touch_state) { > > + /* this finger is on the screen */ > > + int wide = (s->w > s->h); > > + /* divided by two to match visual scale of touch */ > > + int major = max(s->w, s->h) >> 1; > > + int minor = min(s->w, s->h) >> 1; > > + > > + elan_dbg(ts->client, > > + "[ELAN] i=%d x=%x y=%x w=%x h=%x, p=%x\n", > > + i, s->x, s->y, major, minor, s->p); > > + > > + input_event(input, EV_ABS, ABS_MT_TRACKING_ID, s->contactid); > > + input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x); > > + input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y); > > + input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide); > > +#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 32) > > + input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p); > > +#endif > > + input_event(input, EV_ABS, ABS_MT_WIDTH_MAJOR, major); > > + > > +#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 32) > > + /* Can't not report on Android 2.2, 10th finger will disorder */ > > + input_event(input, EV_ABS, ABS_MT_WIDTH_MINOR, minor); > > +#endif > > + } > > + input_mt_sync(input); > > + s->seen_in_this_frame = false; > > + } > > + > > + input_sync(input); > > + td->num_received = 0; > > +} > > +#else /* For Android ICS, input protocol-B */ > > +static void elan_mt_emit_event( > > + struct mt_device *td, > > + struct input_dev *input) > > +{ > > + struct elants_data *ts = > > + container_of(td, struct elants_data, td); > > + int i; > > + > > + for (i = 0; i < td->maxcontacts; ++i) { > > + struct mt_slot *s = &(td->slots[i]); > > + if (!s->seen_in_this_frame) > > + s->touch_state = false; > > + > > + input_mt_slot(input, i); > > + input_mt_report_slot_state(input, MT_TOOL_FINGER, s->touch_state); > > + if (s->touch_state) { > > + /* this finger is on the screen */ > > + int wide = (s->w > s->h); > > + /* divided by two to match visual scale of touch */ > > + int major = max(s->w, s->h) >> 1; > > + int minor = min(s->w, s->h) >> 1; > > + > > + elan_dbg(ts->client, > > + "[ELAN] i=%d x=%x y=%x w=%x h=%x\n", > > + i, s->x, s->y, major, minor); > > + > > + input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x); > > + input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y); > > + input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide); > > + input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p); > > + input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); > > + input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); > > + } > > + s->seen_in_this_frame = false; > > + } > > + > > + input_mt_report_pointer_emulation(input, true); > > + input_sync(input); > > + td->num_received = 0; > > +} > > + > > +#endif > > + > > + > > +/** @brief \b elan_mt_event - process finger reports > > + * @param ts: our touchscreen > > + * @param finger_stat : number of fingers in packet > > + * @param buf : received buffer > > + * > > + * Walk the received report and process the finger data, extracting > > + * and reporting co-ordinates. No locking is needed here as the workqueue > > + * does our threading for us. > > + */ > > +static int elan_mt_event( > > + struct elants_data *ts, > > + int finger_stat, > > + u8 *buf) > > +{ > > + int i; > > + u8 fid[FINGER_NUM], wid[FINGER_NUM]; > > + u16 x, y, w, h; > > + struct i2c_client *client = ts->client; > > + struct mt_device *td = &ts->td; > > + > > + dev_dbg(&client->dev, > > + "[ELAN] Enter elan_mt_event Func\n"); > > + > > + /* Parsing Finger, Width field */ > > + elan_touch_parse_fid(&buf[idx_finger_state], &fid[0]); > > + elan_touch_parse_wid(&buf[idx_finger_width], &wid[0]); > > + > > + /* number of fingers expects in this frame */ > > + td->num_expected = finger_stat; > > + for (i = 0; i < td->maxcontacts; i++) { > > + if (finger_stat == 0) > > + break; > > + > > + /* tracking id */ > > + td->curdata.contactid = (fid[i] > 0) ? i+1 : 0; > > + > > + if (td->curdata.contactid == 0) > > + continue; > > + > > + td->curdata.touch_state = true; > > + > > + elants_parse_xy(&buf[3+i*3], &x, &y); > > + td->curdata.x = x; > > + td->curdata.y = y; > > + > > + elan_lookup_wid(wid[i], &w, &h); > > + td->curdata.w = w; > > + td->curdata.h = h; > > + > > + finger_stat--; > > + > > + elan_mt_complete_slot(td); > > + } > > + > > + if (td->num_received >= td->num_expected) > > + elan_mt_emit_event(td, ts->input); > > + > > + return 1; > > +} > > + > > + > > + > > +/** @brief \b elants_report_data - report finger report to user space. > > + * @param client : our i2c device > > + * @param buf : raw data from TP device. > > + * > > + * - reporting finger data to user space. > > + * - packet_fail count > > + * > > + */ > > +static void elants_report_data(struct i2c_client *client, uint8_t *buf) > > +{ > > + struct elants_data *ts = i2c_get_clientdata(client); > > + > > + switch (buf[idx_finger_header]) { > > + case idx_coordinate_packet_4_finger: > > + case idx_coordinate_packet_10_finger: { > > + u8 finger_stat = buf[idx_finger_total] & 0x0f; > > + elan_dbg(client, > > + "[ELAN] finger_stat == %d\n", finger_stat); > > + elan_dbg(client, > > + "[ELAN] finger:%x:%x:%x:%x:%x\n", > > + buf[0], buf[1], buf[2], buf[3], buf[4]); > > + > > + /* Enter right process, reset int_status*/ > > + ts->polling.int_status = 0; > > + ts->packet_received++; > > + > > + if (likely(finger_stat != 0)) { > > + ts->td.curvalid = true; > > + /* Old way for report input event > > + elan_touch_report_fingers(ts , finger_stat, buf); */ > > + elan_mt_event(ts, finger_stat, buf); > > + ts->touched_sync++; > > + } else { > > + input_mt_sync(ts->input); > > + ts->no_touched_sync++; > > + input_sync(ts->input); > > + } > > + } > > + break; > > + default: > > + ts->header_fail++; > > + dev_err(&client->dev, > > + "[ELAN] %s: unknown packet type: %x:%x:%x:%x\n", > > + __func__, buf[0], buf[1], buf[2], buf[3]); > > + break; > > + } > > + > > + return; > > +} > > + > > +/** @brief \b elants_drop_packet - err handler that drop all packet. > > + * > > + * mutex protection will at outside this function. > > + * > > + */ > > +static void elants_drop_packet(struct elants_data *ts) > > +{ > > + uint8_t buf[queue_packet_max_len] = {0x0}; > > + > > + dev_dbg(&ts->client->dev, > > + "[ELAN] Enter %s\n", __func__); > > + > > + if (ts->protocol & PRO_UPDATE_FW_MODE) > > + return; > > + > > + if (gpio_get_value(ts->intr_gpio) != 0) > > + goto end; > > + > > + /* -# Read multi_queue header */ > > + ts->rx_size = queue_header_size; > > + if (elants_recv_data(ts->client, buf) < 0) > > + goto end; > > + > > + /* -# Get multi_queue header info*/ > > + if (elants_GetRepoInfo(ts->client, buf) > 0) { > > + /* 3. Get finger report data */ > > + elants_recv_data(ts->client, buf); > > + udelay(10); > > + if (gpio_get_value(ts->intr_gpio) != 0) > > + goto end; > > + } > > + > > + /* -#received all packet till ts->intr pull high */ > > + ts->rx_size = 1; > > + while (gpio_get_value(ts->intr_gpio) == 0) { > > + elants_recv_data(ts->client, buf); > > + udelay(10); > > + } > > + > > +end: > > + ts->rx_size = queue_header_size; > > + dev_dbg(&ts->client->dev, > > + "[ELAN] Leave %s\n", __func__); > > + > > + return; > > +} > > + > > + > > + > > +/** @brief \b elan_ts_pollWork_func - regular processing > > + * @param work : pass from kernel > > + * > > + * poll_timer polled processing to occur elan_ts_pollWork_func() to check if our ts > > + * is abnormal. > > + * > > + */ > > +static void elants_pollWork_func(struct work_struct *work) > > + > > +{ > > + struct elants_data *ts = > > + container_of(work, struct elants_data, pollingwork); > > + > > + dev_dbg(&ts->client->dev, > > + "[ELAN] Enter %s\n", __func__); > > + > > + if (ts->protocol & PRO_UPDATE_FW_MODE) > > + goto fail; > > + > > + if (gpio_get_value(ts->intr_gpio) != 0) > > + goto fail; > > + else { > > + ts->polling.int_status++; > > + if (ts->polling.int_status < 3) > > + goto fail; > > + } > > + > > + /* - we use mutex_trylock() here since polling is not very important */ > > + if (!mutex_trylock(&ts->mutex)) { > > + elan_dbg(ts->client, > > + "[ELAN] trylock fail! return...\n"); > > + goto fail; > > + } > > + > > + if (test_bit(idx_finger_report, &ts->busy)) { > > + elan_dbg(ts->client, > > + "[ELAN] 1.finger_Report processing ... ignore!!\n"); > > + goto unlock; > > + } > > + > > + if (test_bit(idx_cmd_handshake, &ts->busy)) { > > + elan_dbg(ts->client, > > + "[ELAN] 2.command processing ... ignore!!\n"); > > + goto unlock; > > + } > > + > > + dev_err(&ts->client->dev, > > + "[ELAN] Force to release intr_gpio!!\n"); > > + > > + ts->drop_frame++; > > + elants_drop_packet(ts); > > + > > +unlock: > > + mutex_unlock(&ts->mutex); > > + > > +fail: > > + return; > > +} > > + > > +static irqreturn_t elants_work_func(int irq, void *work) > > +{ > > + struct elants_data *ts = work; > > + uint8_t buf[queue_packet_max_len] = {0x0}; > > + u8 pos = 0, rc; > > + > > + dev_dbg(&ts->client->dev, > > + "[ELAN] Enter %s\n", __func__); > > + > > + if (ts->protocol & PRO_UPDATE_FW_MODE) > > + return IRQ_HANDLED; > > + > > + /* - this means that we have already serviced it or glich happen!! */ > > + if (gpio_get_value(ts->intr_gpio) != 0) { > > + dev_dbg(&ts->client->dev, > > + "[ELAN] Leave %s(gpio)\n", __func__); > > + return IRQ_HANDLED; > > + } > > + > > + mutex_lock(&ts->mutex); > > + > > + set_bit(idx_finger_report, &ts->busy); > > + > > + /* Report one setting */ > > + /* ts->rx_size = 40; */ /* queue_header_size; */ > > + /* ts->mq_header.report_count=1; */ > > + > > + > > + /* - Read multi_queue header */ > > + if (elants_recv_data(ts->client, buf) < 0) > > + goto fail; > > + > > + /* - Get multi_queue header info */ > > + rc = elants_GetRepoInfo(ts->client, buf); > > + if (rc < 0 || rc == ret_cmdrsp) > > + goto fail; > > + > > + /* - Get finger report data */ > > + if (elants_recv_data(ts->client, buf) < 0) > > + goto fail; > > + > > + clear_bit(idx_finger_report, &ts->busy); > > + > > + mutex_unlock(&ts->mutex); > > + > > + /* - parsing report and send out */ > > + while (ts->mq_header.report_count--) { > > + if (elan_touch_checksum(ts->client, buf + pos) == 0) > > + elants_report_data(ts->client, buf + pos); > > + pos = pos + IDX_PACKET_SIZE_WIDTH; > > + udelay(10); > > + } > > + > > + ts->rx_size = queue_header_size; > > + dev_dbg(&ts->client->dev, > > + "[ELAN] Leave %s\n", __func__); > > + return IRQ_HANDLED; > > + > > +fail: > > + clear_bit(idx_finger_report, &ts->busy); > > + mutex_unlock(&ts->mutex); > > + ts->rx_size = queue_header_size; > > + > > + dev_dbg(&ts->client->dev, > > + "[ELAN] Leave %s(Fail)\n", __func__); > > + return IRQ_HANDLED; > > +} > > + > > + > > + > > +/** > > + * @brief \b elan_touch_timer_func - poll processing > > + * @param timer : our timer > > + * > > + * Queue polled processing to occur on our touch panel and kick the timer > > + * off again > > + * > > + * CHECK: we have no guarantee that the timer will not run multiple times > > + * within one poll, does it matter ? > > + */ > > +static enum hrtimer_restart elan_touch_timer_func(struct hrtimer *timer) > > +{ > > + struct elants_data *ts = container_of(timer, struct elants_data, timer); > > + queue_work(ts->elan_wq, &ts->work); > > + hrtimer_start(&ts->timer, > > + ktime_set(0, 12500000), HRTIMER_MODE_REL); > > + > > + return HRTIMER_NORESTART; > > +} > > + > > +/** > > + * @brief \b elants_poll_timer_func - err handler when intr_gpio is low but no > isr serviced it. > > + * @param data : our ts > > + * > > + * intr_gpio polling checking, it'll force to get data if intr_gpio is low > > + * and not in isr routine. > > + * > > + */ > > +static void elants_poll_timer_func(unsigned long data) > > +{ > > + struct elants_data *ts = (struct elants_data *)data; > > + struct elan_polling *timer = &ts->polling; > > + > > + dev_dbg(&ts->client->dev, > > + "[ELAN] Enter %s\n", __func__); > > + > > + /* - ignore it if normal work is processing */ > > + if (work_pending(&ts->work)) { > > + dev_dbg(&ts->client->dev, > > + "[ELAN] 1.work_pending ... ignore!!\n"); > > + goto reset; > > + } > > + > > + /* - ignore it if poll_timer work is processing */ > > + if (work_pending(&ts->pollingwork)) { > > + dev_dbg(&ts->client->dev, > > + "[ELAN] 2.work_pending ... ignore!!\n"); > > + goto reset; > > + } > > + > > + if (!queue_work(timer->elan_wq, &ts->pollingwork)) > > + dev_err(&ts->client->dev, > > + "[ELAN] pollWork active failed!!\n"); > > + > > +reset: > > + timer->timer.expires = jiffies + 10 * HZ; > > + add_timer(&ts->polling.timer); > > + > > + return; > > +} > > + > > +static irqreturn_t elants_irq_handler(int irq, void *dev_id) > > +{ > > + struct elants_data *ts = dev_id; > > + struct i2c_client *client = ts->client; > > + > > + dev_dbg(&client->dev, > > + "[ELAN] %s\n", __func__); > > + > > + ts->irq_received++; > > + > > + return IRQ_WAKE_THREAD; > > +} > > + > > + > > +static int elants_register_interrupt(struct i2c_client *client) > > +{ > > + struct elants_data *ts = i2c_get_clientdata(client); > > + int err = 0; > > + > > + if (client->irq) { > > + > > + ts->use_irq = 1; > > + > > + err = request_threaded_irq(client->irq, elants_irq_handler, > > + elants_work_func, > > + IRQF_TRIGGER_FALLING | > IRQF_ONESHOT, > > + client->name, ts); > > + if (err) > > + dev_err(&client->dev, > > + "%s: request_irq %d failed\n", > > + __func__, client->irq); > > + > > + ts->status |= STA_USE_IRQ; > > + > > + elan_dbg(client, > > + "[ELAN] %s in interrupt mode\n", ts->input->name); > > + } > > + > > + if (!ts->use_irq) { > > + hrtimer_init(&ts->timer, > > + CLOCK_MONOTONIC, HRTIMER_MODE_REL); > > + ts->timer.function = elan_touch_timer_func; > > + hrtimer_start(&ts->timer, ktime_set(1, 0), > > + HRTIMER_MODE_REL); > > + elan_dbg(client, > > + "[ELAN] %s in time-polling mode\n", ts->input->name); > > + } > > + > > + return err; > > +} > > + > > +static int remove_elants(struct i2c_client *client) > > +{ > > + int ret = 0; > > + struct elants_data *ts = i2c_get_clientdata(client); > > + > > + if (&client->dev.kobj) > > + sysfs_remove_group(&client->dev.kobj, &elan_attribute_group); > > + > > +#ifdef CONFIG_HAS_EARLYSUSPEND > > + if (&ts->early_suspend) > > + unregister_early_suspend(&ts->early_suspend); > > +#endif > > + > > + if (ts->use_irq) { > > + if (client->irq) > > + free_irq(client->irq, ts); > > + } else { > > + if (&ts->timer) > > + hrtimer_cancel(&ts->timer); > > + } > > + > > +#if (MT_TYPE_B) > > + input_mt_destroy_slots(ts->input); > > +#endif > > + > > + if (ts->input) > > + input_unregister_device(ts->input); > > + > > + if (ts->elan_wq) > > + destroy_workqueue(ts->elan_wq); > > + > > + if (ts->polling.elan_wq) > > + destroy_workqueue(ts->polling.elan_wq); > > + > > + if (&ts->polling.timer) { > > + ret = del_timer(&ts->polling.timer); > > + if (ret != 0) > > + dev_err(&client->dev, > > + "[ELAN] del_timer fail!!\n"); > > + } > > + > > + if (&ts->mutex) > > + mutex_destroy(&ts->mutex); > > + if (&ts->tr_mutex) > > + mutex_destroy(&ts->tr_mutex); > > + if (&ts->fifo_mutex) > > + mutex_destroy(&ts->fifo_mutex); > > + > > + if (ts->fw_enabled) { > > + ret = misc_deregister(&ts->firmware); > > + if (ret < 0) > > + dev_err(&client->dev, > > + "[ELAN] misc_deregister fail!!\n"); > > + } > > + > > + kfree(ts->td.slots); > > + > > + /* free kfifo */ > > + kfifo_free(&ts->fifo); > > +#if (ANDROID) > > + wake_lock_destroy(&ts->wakelock); > > +#endif > > + > > + kfree(ts); > > + > > + return ret; > > +} > > + > > + > > +/** > > + * probe_thread_func - init touch device. > > + * @work: /int work queue > > + * > > + * Perform real probe for our I2C device and if successful configure > > + * it up as an input device. If not then clean up and return an error > > + * code. > > + */ > > + > > +static int probe_thread_func(void *data) > > +{ > > + struct elants_data *ts = data; > > + struct i2c_client *client = ts->client; > > + int err = 0; > > + > > + mutex_lock(&ts->mutex); > > + > > + err = elants_setup(client); > > + if (err < 0) { > > + dev_err(&client->dev, > > + "[ELAN] %s probe failed\n", > > + ELAN_DEV_NAME); > > + /* User can IAP anyway, continue */ > > + } > > + > > + set_bit(BTN_TOUCH, ts->input->keybit); > > + > > + /*! - Single touch input params setup */ > > + input_set_abs_params(ts->input, ABS_X, 0, ts->cols, 0, 0); > > + input_set_abs_params(ts->input, ABS_Y, 0, ts->rows, 0, 0); > > + input_set_abs_params(ts->input, ABS_PRESSURE, 0, 255, 0, 0); > > + > > + /*! @warning FIXME: ABS_MT_PRESSURE can be supported by FW. > > + currently we have done it by ABS_MT_WIDTH_MAJOR */ > > + /*! - Multitouch input params setup */ > > + input_set_abs_params(ts->input, ABS_MT_POSITION_X, 0, ts->cols, 0, 0); > > + input_set_abs_params(ts->input, ABS_MT_POSITION_Y, 0, ts->rows, 0, 0); > > +#if (MT_TYPE_B == 0) > > + input_set_abs_params(ts->input, ABS_MT_WIDTH_MAJOR, 0, 255, 0, 0); > > + input_set_abs_params(ts->input, ABS_MT_WIDTH_MINOR, 0, 255, 0, 0); > > + input_set_abs_params(ts->input, ABS_MT_TOUCH_MAJOR, 0, 1, 0, 0); > > + input_set_abs_params(ts->input, ABS_MT_TOUCH_MINOR, 0, 1, 0, 0); > > + > > + input_set_abs_params(ts->input, ABS_MT_TRACKING_ID, 0, FINGER_NUM, 0, > 0); > > +#else > > + input_set_abs_params(ts->input, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0); > > + input_set_abs_params(ts->input, ABS_MT_TOUCH_MINOR, 0, 255, 0, 0); > > + > > + /* not test, keep mark for less Android-ICS */ > > + input_set_abs_params(ts->input, ABS_MT_ORIENTATION, 0, 1, 0, 0); > > +#endif > > + > > + __set_bit(EV_ABS, ts->input->evbit); > > + __set_bit(EV_SYN, ts->input->evbit); > > + > > + input_set_drvdata(ts->input, ts); > > + > > + err = input_register_device(ts->input); > > + if (err) { > > + dev_err(&client->dev, > > + "[ELAN] %s unable to register input device\n", > > + ELAN_DEV_NAME); > > + goto fail_un; > > + } > > + > > + ts->td.slots = kzalloc(FINGER_NUM * sizeof(struct mt_slot), > > + GFP_KERNEL); > > + if (!ts->td.slots) { > > + dev_err(&client->dev, > > + "cannot allocate multitouch slots\n"); > > + goto fail_un; > > + } > > + ts->td.maxcontacts = FINGER_NUM; > > +#if (MT_TYPE_B) > > + input_mt_init_slots(ts->input, ts->td.maxcontacts); > > +#endif > > + > > + /*! @warning If the firmware device fails we carry on as it doesn't stop normal > > + usage */ > > + private_ts = &ts->firmware; > > + if (elants_register_interrupt(ts->client) < 0) { > > + dev_err(&client->dev, > > + "[ELAN] %s register_interrupt failed!\n", > > + ELAN_DEV_NAME); > > + goto fail_un; > > + } > > + > > + /*! - Register SW watchdog timer */ > > + init_timer(&ts->polling.timer); > > + /*! - check intr_gpio every 10secs */ > > + ts->polling.timer.expires = jiffies + 10 * HZ; > > + ts->polling.timer.function = &elants_poll_timer_func; > > + ts->polling.timer.data = (unsigned long)ts; > > + add_timer(&ts->polling.timer); > > + > > + mutex_unlock(&ts->mutex); > > + > > + ts->status |= STA_INIT4; > > + > > + return 0; > > + > > +fail_un: > > + mutex_unlock(&ts->mutex); > > + remove_elants(client); > > + return err; > > +} > > + > > + > > + > > +/** > > + * @brief elants_probe - probe for touchpad > > + * @param client : our I2C client > > + * > > + * Perform setup and probe for our I2C device and if successful configure > > + * it up as an input device. If not then clean up and return an error > > + * code. > > + */ > > +static int __devinit elants_probe( > > + struct i2c_client *client, > > + const struct i2c_device_id *id) > > +{ > > + long err = -1; > > + struct elan_i2c_platform_data *pdata = NULL; > > + struct elants_data *ts = > > + kzalloc(sizeof(struct elants_data), GFP_KERNEL); > > + > > + if (ts == NULL) > > + return -ENOMEM; > > + > > + ts->status |= STA_PROBED; > > + > > + mutex_init(&ts->mutex); > > + mutex_init(&ts->tr_mutex); > > + mutex_init(&ts->fifo_mutex); > > + init_waitqueue_head(&ts->wait); > > + spin_lock_init(&ts->rx_kfifo_lock); > > +#if (ANDROID) > > + wake_lock_init(&ts->wakelock, WAKE_LOCK_SUSPEND, "elan_touch"); > > +#endif > > + > > + if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { > > + dev_err(&client->dev, > > + "[ELAN] %s: i2c check functionality error\n", > > + ELAN_DEV_NAME); > > + goto fail_un; > > + } > > + > > + /* @{ - Normal operatin (Finger report) */ > > + ts->elan_wq = create_singlethread_workqueue("elan_wq"); > > + if (!ts->elan_wq) { > > + dev_err(&client->dev, > > + "[ELAN] %s: create workqueue failed\n", > > + ELAN_DEV_NAME); > > + goto fail_un; > > + } > > + > > + /*! - Regular polling Process */ > > + ts->polling.elan_wq = create_singlethread_workqueue("elan_poll_wq"); > > + if (!ts->polling.elan_wq) { > > + dev_err(&client->dev, > > + "[ELAN] %s: create workqueue failed\n", > > + ELAN_DEV_NAME); > > + goto fail_un; > > + } > > + > > + /* INIT polling machinams */ > > + INIT_WORK(&ts->pollingwork, elants_pollWork_func); > > + > > + pdata = client->dev.platform_data; > > + if (!pdata) { > > + dev_err(&client->dev, > > + "[ELAN] %s no platform data\n", > > + ELAN_DEV_NAME); > > + goto fail_un; > > + } > > + > > + ts->status &= STA_INIT; > > + > > + ts->intr_gpio = pdata->intr_gpio; > > + ts->rst_gpio = pdata->rst_gpio; > > + /* set initial i2c address */ > > + client->addr = elan_i2c_master; > > + ts->i2caddr = client->addr; > > + > > + elan_dbg(client, > > + "reset=%d, intr=%d\n", ts->rst_gpio, ts->intr_gpio); > > + > > + ts->client = client; > > + i2c_set_clientdata(client, ts); > > + > > + /* INIT kfifo */ > > + err = kfifo_alloc(&ts->fifo, FIFO_SIZE, GFP_KERNEL); > > + if (!kfifo_initialized(&ts->fifo)) { > > + dev_err(&client->dev, > > + "%s error kfifo_alloc\n", __func__); > > + goto fail_un; > > + } > > + > > + > > + /*! - IAP Device Initial */ > > + ts->firmware.minor = MISC_DYNAMIC_MINOR; > > + ts->firmware.name = "elan-iap"; > > + ts->firmware.fops = &elan_touch_fops; > > + ts->firmware.mode = S_IRWXUGO; > > + > > + if (unlikely(misc_register(&ts->firmware) < 0)) > > + dev_err(&client->dev, > > + "[ELAN] IAP device register failed!!"); > > + else { > > + elan_dbg(client, > > + "[ELAN] IAP device register finished!!"); > > + ts->fw_enabled = 1; > > + } > > + > > + ts->status &= STA_INIT2; > > + > > + ts->input = input_allocate_device(); > > + if (ts->input == NULL) { > > + dev_err(&client->dev, > > + "[ELAN] %s Failed to allocate input device\n", > > + ELAN_DEV_NAME); > > + goto fail_un; > > + } > > + > > + ts->input->name = ELAN_DEV_NAME; > > + ts->input->open = elan_open; > > + ts->input->close = elan_close; > > + > > + /* Says HELLO to touch device */ > > + ts->thread = kthread_run(probe_thread_func, ts, client->name); > > + if (IS_ERR(ts->thread)) { > > + err = PTR_ERR(ts->thread); > > + goto fail_un; > > + } > > + > > + ts->status &= STA_INIT3; > > + > > +#ifdef CONFIG_HAS_EARLYSUSPEND > > + ts->early_suspend.level = EARLY_SUSPEND_LEVEL_STOP_DRAWING - 1; > > + ts->early_suspend.suspend = elants_early_suspend; > > + ts->early_suspend.resume = elants_late_resume; > > + register_early_suspend(&ts->early_suspend); > > +#endif > > + > > + /* - register sysfs @} */ > > + elan_dbg(client, > > + "[ELAN] create sysfs!!\n"); > > + if (sysfs_create_group(&client->dev.kobj, &elan_attribute_group)) > > + dev_err(&client->dev, > > + "[ELAN] sysfs create group error\n"); > > + > > + > > + return 0; > > + > > +fail_un: > > + remove_elants(client); > > + return err; > > +} > > + > > +static int __devexit elants_remove(struct i2c_client *client) > > +{ > > + return remove_elants(client); > > +} > > + > > +#ifdef CONFIG_PM_SLEEP > > +/** @brief \b elan_ts_suspend - enter sleep mode > > + * > > + * when Suspend mode, disable_irq and cancel work queue. > > + * > > + */ > > +static int elants_suspend(struct i2c_client *client, pm_message_t mesg) > > +{ > > + struct elants_data *ts = i2c_get_clientdata(client); > > + const u8 set_sleep_cmd[] = {0x54, 0x50, 0x00, 0x01}; > > + int rc = 0; > > + > > + dev_err(&client->dev, > > + "[ELAN] %s: enter\n", __func__); > > + > > + /* Command not support in IAP recovery mode */ > > + if (ts->protocol & PRO_UPDATE_FW_MODE) > > + return 0; > > + > > + disable_irq(client->irq); > > + cancel_work_sync(&ts->work); > > + > > + mutex_lock(&ts->mutex); > > + rc = elants_set_data(client, > > + set_sleep_cmd, sizeof(set_sleep_cmd)); > > + > > + if (rc < 0) > > + goto end; > > + > > + ts->power_state = 0; > > + /* de-active timer */ > > + del_timer_sync(&ts->polling.timer); > > + > > + > > +end: > > + mutex_unlock(&ts->mutex); > > + return rc; > > +} > > + > > + > > +/** @brief \b elan_ts_resume - enter wake-up mode > > + * > > + * when Wake-up mode, enable_irq. > > + * > > + */ > > +static int elants_resume(struct i2c_client *client) > > +{ > > + struct elants_data *ts = i2c_get_clientdata(client); > > + const u8 set_active_cmd[] = {0x54, 0x58, 0x00, 0x01}; > > + int rc = 0, retry = 5; > > + > > + dev_err(&client->dev, > > + "[ELAN] %s: enter\n", > > + __func__); > > + > > + /* Command not support in IAP recovery mode */ > > + if (ts->protocol & PRO_UPDATE_FW_MODE) > > + return 0; > > + > > + mutex_lock(&ts->mutex); > > + > > + do { > > + rc = elants_set_data(client, > > + set_active_cmd, sizeof(set_active_cmd)); > > + elan_msleep(2); > > + rc = elants_get_power_state(client); > > + if (unlikely(rc != PWR_STATE_NORMAL)) > > + dev_err(&client->dev, > > + "[ELAN] %s: wake up tp failed! err = %d\n", > > + __func__, rc); > > + else > > + break; > > + } while (--retry); > > + > > + ts->power_state = 1; > > + mutex_unlock(&ts->mutex); > > + > > + /* re-active poll timer */ > > + mod_timer(&ts->polling.timer, jiffies + 10 * HZ); > > + > > + enable_irq(client->irq); > > + > > + return rc; > > +} > > +#endif > > + > > + > > +#ifdef CONFIG_HAS_EARLYSUSPEND > > Convert to mainline PM functions. Use CONFIG_PM_SLEEP and > SIMPLE_DEV_PM_OPS > > +/** @brief \b elants_early_suspend - enter sleep mode > > + * > > + * This function is called by kernel, > > + * elan_ts_early_suspend() -> elan_ts_suspend() > > + * > > + */ > > +static void elants_early_suspend(struct early_suspend *h) > > +{ > > + struct elants_data *ts = > > + container_of(h, struct elants_data, early_suspend); > > + dev_dbg(&ts->client->dev, > > + "Enter %s\n", __func__); > > + > > + elants_suspend(ts->client, PMSG_SUSPEND); > > + return; > > +} > > + > > +/** @brief \b elants_late_resume - enter wake-up mode > > + * > > + * This function is called by kernel, > > + * elan_ts_late_resume() -> elan_ts_resume() > > + * > > + */ > > +static void elants_late_resume(struct early_suspend *h) > > +{ > > + struct elants_data *ts = > > + container_of(h, struct elants_data, early_suspend); > > + dev_dbg(&ts->client->dev, > > + "Enter %s\n", __func__); > > + > > + elants_resume(ts->client); > > + return; > > +} > > +#endif > > + > > +/*! brief system registeration */ > > +static const struct i2c_device_id elan_ts_id[] = { > > + { ELAN_DEV_NAME, 0 }, > > + { } > > +}; > > +MODULE_DEVICE_TABLE(i2c, elan_ts_id); > > + > > +/*! brief system registeration */ > > +static struct i2c_driver elan_ts_driver = { > > + .probe = elants_probe, > > + .remove = __devexit_p(elants_remove), > > +#ifndef CONFIG_HAS_EARLYSUSPEND > > + .suspend = elants_suspend, > > + .resume = elants_resume, > > +#endif > > + .id_table = elan_ts_id, > > + .driver = { > > + .name = ELAN_DEV_NAME, > > + .owner = THIS_MODULE, > > + .bus = &i2c_bus_type, > > + }, > > +}; > > + > > +#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 2, 0) > > +static int __devinit elan_ts_init(void) > > +{ > > + return i2c_add_driver(&elan_ts_driver); > > +} > > + > > +static void __exit elan_ts_exit(void) > > +{ > > + i2c_del_driver(&elan_ts_driver); > > + return; > > +} > > +module_init(elan_ts_init); > > +module_exit(elan_ts_exit); > > +#else > > +module_i2c_driver(elan_ts_driver); > > Target mainline and use this only. > > +#endif > > + > > +MODULE_VERSION(DRIVER_VERSION); > > +MODULE_DESCRIPTION("Elan TouchScreen Driver"); > > +MODULE_LICENSE("GPL"); > > diff --git a/include/linux/i2c/elants.h b/include/linux/i2c/elants.h > > new file mode 100644 > > index 0000000..5b45a0c > > --- /dev/null > > +++ b/include/linux/i2c/elants.h > > @@ -0,0 +1,61 @@ > > +#ifndef _LINUX_I2C_ELANTS_H > > +#define _LINUX_I2C_ELANTS_H > > + > > +#define ELAN_DEV_NAME "elants_i2c" > > + > > +/* set TSP resolution by actual TPM */ > > +#define ELAN_X_MAX 2944 > > +#define ELAN_Y_MAX 1856 > > + > > + > > +/*! @brief \b platform data > > + * @param intr_gpio : gpio pin > > + * @param rst_gpio : interuption pin > > + * > > + * Platform data, all platform dependent variable should put here. > > + * > > + */ > > +struct elan_i2c_platform_data { > > + unsigned short version; > > + unsigned int abs_x_min; > > + unsigned int abs_x_max; > > + unsigned int abs_y_min; > > + unsigned int abs_y_max; > > + int intr_gpio; > > + int rst_gpio; > > +}; > > + > > +struct elan_ioctl_data { > > + int len; > > + char buf[32]; > > +}; > > + > > +/*! @brief \b ioctl command definition. > > + * @param IOCTL_I2C_SLAVE : set i2c address that would be controled right now. > > + * @param IOCTL_MAJOR_FW_VER : fw major number > > + * @param IOCTL_MINOR_FW_VER : fw minor number > > + * @param IOCTL_RESET : Hardware Reset > > + * @param IOCTL_SET_COMMAND : control command set to TP device. > > + * @param IOCTL_GET_COMMAND : get response from our TP device. > > + * @param IOCTL_IAP_ENABLE : Enter IAP mode > > + * @param IOCTL_IAP_DISABLE : Leave IAP mode > > + * @param IOCTL_I2C_INT : gpio status > > + * > > + * > > + * ioctl command, easy user to control our TP from application. > > + * > > + */ > > +#define ELAN_IOCTLID 0xD0 > > +#define IOCTL_I2C_SLAVE _IOW(ELAN_IOCTLID, 1, int) > > +#define IOCTL_MAJOR_FW_VER _IOR(ELAN_IOCTLID, 2, int) > > +#define IOCTL_MINOR_FW_VER _IOR(ELAN_IOCTLID, 3, int) > > +#define IOCTL_RESET _IOW(ELAN_IOCTLID, 4, int) > > +#define IOCTL_I2C_INT _IOR(ELAN_IOCTLID, 8, int) > > +#define IOCTL_SET_COMMAND _IOW(ELAN_IOCTLID, 9, unsigned long) > > +#define IOCTL_GET_COMMAND _IOR(ELAN_IOCTLID, 10, unsigned long) > > +#define IOCTL_IAP_ENABLE _IOW(ELAN_IOCTLID, 11, int) > > +#define IOCTL_IAP_DISABLE _IOW(ELAN_IOCTLID, 12, int) > > +#define IOCTL_CHECK_RECOVERY_MODE _IOR(ELAN_IOCTLID, 13, int) > > +#define IOCTL_BOOTCODE_CMD _IOW(ELAN_IOCTLID, 14, unsigned long) > > + > > +#endif /* _LINUX_I2C_ELANTS_H */ > > -- > > 1.7.9.5 > > > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > Please read the FAQ at http://www.tux.org/lkml/ > -- > To unsubscribe from this list: send the line "unsubscribe linux-input" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
