diff options
| -rw-r--r-- | drivers/input/touchscreen/it7258_ts_i2c.c | 339 |
1 files changed, 25 insertions, 314 deletions
diff --git a/drivers/input/touchscreen/it7258_ts_i2c.c b/drivers/input/touchscreen/it7258_ts_i2c.c index 812605ed1270..048358e2ef9d 100644 --- a/drivers/input/touchscreen/it7258_ts_i2c.c +++ b/drivers/input/touchscreen/it7258_ts_i2c.c @@ -16,22 +16,11 @@ #include <linux/module.h> #include <linux/delay.h> #include <linux/i2c.h> -#include <asm/uaccess.h> #include <linux/input.h> #include <linux/interrupt.h> -#include <linux/io.h> -#include <linux/cdev.h> -#include <linux/platform_device.h> -#include <linux/time.h> -#include <linux/timer.h> #include <linux/firmware.h> -#include <linux/timer.h> #include <linux/gpio.h> #include <linux/slab.h> -#include <linux/sync.h> -#include <linux/proc_fs.h> -#include <linux/notifier.h> -#include <linux/asus_utility.h> #include <linux/wakelock.h> #define MAX_BUFFER_SIZE 144 @@ -39,10 +28,6 @@ #define SCREEN_X_RESOLUTION 320 #define SCREEN_Y_RESOLUTION 320 -#define IOC_MAGIC 'd' -#define IOCTL_SET _IOW(IOC_MAGIC, 1, struct ioctl_cmd168) -#define IOCTL_GET _IOR(IOC_MAGIC, 2, struct ioctl_cmd168) - #define BUF_COMMAND 0x20 /* all commands writes go to this idx */ #define BUF_SYS_COMMAND 0x40 #define BUF_QUERY 0x80 /* "revice ready?" and "wake up please" and "read touch data" reads go to this idx */ @@ -79,8 +64,7 @@ #define SYSFS_RESULT_SUCCESS 1 #define DEVICE_READY_MAX_WAIT 500 - -//result of reading with BUF_QUERY bits +/* result of reading with BUF_QUERY bits */ #define CMD_STATUS_BITS 0x07 #define CMD_STATUS_DONE 0x00 #define CMD_STATUS_BUSY 0x01 @@ -108,36 +92,22 @@ struct PointData { } __attribute__((packed)); #define PD_FLAGS_DATA_TYPE_BITS 0xF0 -# define PD_FLAGS_DATA_TYPE_TOUCH 0x00 /* other types (like chip-detected gestures) exist but we do not care */ +/* other types (like chip-detected gestures) exist but we do not care */ +#define PD_FLAGS_DATA_TYPE_TOUCH 0x00 #define PD_FLAGS_NOT_PEN 0x08 /* set if pen touched, clear if finger(s) */ #define PD_FLAGS_HAVE_FINGERS 0x07 /* a bit for each finger data that is valid (from lsb to msb) */ #define PD_PALM_FLAG_BIT 0x01 #define FD_PRESSURE_BITS 0x0F -# define FD_PRESSURE_NONE 0x00 -# define FD_PRESSURE_HOVER 0x01 -# define FD_PRESSURE_LIGHT 0x02 -# define FD_PRESSURE_NORMAL 0x04 -# define FD_PRESSURE_HIGH 0x08 -# define FD_PRESSURE_HEAVY 0x0F - -struct ioctl_cmd168 { - uint16_t bufferIndex; - uint16_t length; - uint16_t buffer[MAX_BUFFER_SIZE]; -}; +#define FD_PRESSURE_NONE 0x00 +#define FD_PRESSURE_HOVER 0x01 +#define FD_PRESSURE_LIGHT 0x02 +#define FD_PRESSURE_NORMAL 0x04 +#define FD_PRESSURE_HIGH 0x08 +#define FD_PRESSURE_HEAVY 0x0F struct IT7260_ts_data { struct i2c_client *client; struct input_dev *input_dev; - struct delayed_work palmdown_work; - struct delayed_work palmup_work; -}; - -struct ite7260_perfile_data { - rwlock_t lock; - uint16_t bufferIndex; - uint16_t length; - uint16_t buffer[MAX_BUFFER_SIZE]; }; static int8_t fwUploadResult = SYSFS_RESULT_NOT_DONE; @@ -148,24 +118,12 @@ static bool chipAwake = true; static bool hadFingerDown = false; static bool isDeviceSleeping = false; static bool isDeviceSuspend = false; -static int ite7260_major = 0; -static int ite7260_minor = 0; -static struct cdev ite7260_cdev; -static struct class *ite7260_class = NULL; -static dev_t ite7260_dev; static struct input_dev *input_dev; -static struct device *class_dev = NULL; -static int suspend_touch_down = 0; -static int suspend_touch_up = 0; static struct IT7260_ts_data *gl_ts; -static struct wake_lock touch_lock; #define LOGE(...) pr_err(DEVICE_NAME ": " __VA_ARGS__) #define LOGI(...) printk(DEVICE_NAME ": " __VA_ARGS__) -/* add workqueue for delay_work */ -static struct workqueue_struct *IT7260_wq; - /* internal use func - does not make sure chip is ready before read */ static bool i2cReadNoReadyCheck(uint8_t bufferIndex, uint8_t *dataBuffer, uint16_t dataLength) { @@ -293,7 +251,7 @@ static bool chipSetStartOffset(uint16_t offset) } -//write fwLength bytes from fwData at chip offset writeStartOffset +/* write fwLength bytes from fwData at chip offset writeStartOffset */ static bool chipFlashWriteAndVerify(unsigned int fwLength, const uint8_t *fwData, uint16_t writeStartOffset) { uint32_t curDataOfst; @@ -370,7 +328,10 @@ out: return chipFirmwareUpgradeModeEnterExit(false) && chipFirmwareReinitialize(CMD_FIRMWARE_REINIT_6F) && success; } -//both buffers should be VERSION_LENGTH in size, but only a part of them is significant */ +/* + * both buffers should be VERSION_LENGTH in size, + * but only a part of them is significant + */ static bool chipGetVersions(uint8_t *verFw, uint8_t *verCfg, bool logIt) { /* this code to get versions is reproduced as was written, but it does not make sense. Something here *PROBABLY IS* wrong */ @@ -392,37 +353,6 @@ static bool chipGetVersions(uint8_t *verFw, uint8_t *verCfg, bool logIt) return ret; } -/* fix touch will not wake up system in suspend mode */ -static void chipLowPowerMode(bool low) -{ - int allow_irq_wake = !(isDeviceSleeping); - static const uint8_t cmdLowPower[] = { CMD_PWR_CTL, 0x00, PWR_CTL_LOW_POWER_MODE}; - uint8_t dummy; - - if (devicePresent) { - LOGI("low power %s\n", low ? "enter" : "exit"); - - if (low) { - if (allow_irq_wake){ - smp_wmb(); - enable_irq_wake(gl_ts->client->irq); - } - isDeviceSleeping = true; - wake_unlock(&touch_lock); - i2cWriteNoReadyCheck(BUF_COMMAND, cmdLowPower, sizeof(cmdLowPower)); - } else { - if (!allow_irq_wake){ - smp_wmb(); - disable_irq_wake(gl_ts->client->irq); - } - isDeviceSleeping = false; - isDeviceSuspend = false; - wake_unlock(&touch_lock); - i2cReadNoReadyCheck(BUF_QUERY, &dummy, sizeof(dummy)); - } - } -} - static ssize_t sysfsUpgradeStore(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { const struct firmware *fw, *cfg; @@ -451,8 +381,12 @@ static ssize_t sysfsUpgradeStore(struct device *dev, struct device_attribute *at fwUploadResult = SYSFS_RESULT_NOT_DONE; if (fwLen && cfgLen) { - if (manualUpgrade || (verFw[5] < fw->data[8] || verFw[6] < fw->data[9] || verFw[7] < fw->data[10] || verFw[8] < fw->data[11]) || - (verCfg[1] < cfg->data[cfgLen - 8] || verCfg[2] < cfg->data[cfgLen - 7] || verCfg[3] < cfg->data[cfgLen - 6] || verCfg[4] < cfg->data[cfgLen - 5])){ + if (manualUpgrade || (verFw[5] < fw->data[8] || verFw[6] < + fw->data[9] || verFw[7] < fw->data[10] || verFw[8] < + fw->data[11]) || (verCfg[1] < cfg->data[cfgLen - 8] + || verCfg[2] < cfg->data[cfgLen - 7] || verCfg[3] < + cfg->data[cfgLen - 6] || + verCfg[4] < cfg->data[cfgLen - 5])){ LOGI("firmware/config will be upgraded\n"); disable_irq(gl_ts->client->irq); success = chipFirmwareUpload(fwLen, fw->data, cfgLen, cfg->data); @@ -539,7 +473,7 @@ static ssize_t sysfsStatusShow(struct device *dev, struct device_attribute *attr static ssize_t sysfsStatusStore(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { uint8_t verFw[10], verCfg[10]; - + chipGetVersions(verFw, verCfg, true); return count; @@ -651,23 +585,6 @@ void sendCalibrationCmd(void) } EXPORT_SYMBOL(sendCalibrationCmd); - -static int mode_notify_sys(struct notifier_block *notif, unsigned long code, void *data) -{ - switch (code) { - case 0: //FB_BLANK_ENTER_NON_INTERACTIVE - chipLowPowerMode(1); - break; - case 1: //FB_BLANK_ENTER_INTERACTIVE - chipLowPowerMode(0); - break; - default: - break; - } - - return 0; -} - static void readFingerData(uint16_t *xP, uint16_t *yP, uint8_t *pressureP, const struct FingerData *fd) { uint16_t x = fd->xLo; @@ -684,21 +601,6 @@ static void readFingerData(uint16_t *xP, uint16_t *yP, uint8_t *pressureP, const *pressureP = fd->pressure & FD_PRESSURE_BITS; } -static uint64_t getMsTime(void) -{ - struct timespec ts; - uint64_t ret; - - getnstimeofday(&ts); - - /* convert nsec to msec */ - ret = ts.tv_nsec; - do_div(ret, 1000000UL); - - /* add in sec */ - return ret + ts.tv_sec * 1000ULL; -} - static void readTouchDataPoint(void) { struct PointData pointData; @@ -730,7 +632,7 @@ static void readTouchDataPoint(void) hadFingerDown = true; readFingerData(&x, &y, &pressure, pointData.fd); - + input_report_abs(gl_ts->input_dev, ABS_X, x); input_report_abs(gl_ts->input_dev, ABS_Y, y); input_report_key(gl_ts->input_dev, BTN_TOUCH, 1); @@ -776,8 +678,7 @@ static bool chipIdentifyIT7260(void) LOGE("i2cRead() failed\n"); return false; } - - LOGI("chipIdentifyIT7260 read id: %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X\n", + pr_info("chipIdentifyIT7260 read id: %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X\n", chipID[0], chipID[1], chipID[2], chipID[3], chipID[4], chipID[5], chipID[6], chipID[7], chipID[8], chipID[9]); @@ -788,7 +689,7 @@ static bool chipIdentifyIT7260(void) LOGI("rev BX3 found\n"); else if (chipID[8] == '6' && chipID[9] == '6') LOGI("rev BX4 found\n"); - else + else LOGI("unknown revision (0x%02X 0x%02X) found\n", chipID[8], chipID[9]); return true; @@ -812,7 +713,6 @@ static int IT7260_ts_probe(struct i2c_client *client, const struct i2c_device_id ret = -ENODEV; goto err_out; } - gl_ts = kzalloc(sizeof(*gl_ts), GFP_KERNEL); if (!gl_ts) { ret = -ENOMEM; @@ -857,10 +757,6 @@ static int IT7260_ts_probe(struct i2c_client *client, const struct i2c_device_id input_set_abs_params(input_dev, ABS_X, 0, SCREEN_X_RESOLUTION, 0, 0); input_set_abs_params(input_dev, ABS_Y, 0, SCREEN_Y_RESOLUTION, 0, 0); - IT7260_wq = create_workqueue("IT7260_wq"); - if (!IT7260_wq) - goto err_check_functionality_failed; - if (input_register_device(input_dev)) { LOGE("failed to register input device\n"); goto err_input_register; @@ -875,7 +771,6 @@ static int IT7260_ts_probe(struct i2c_client *client, const struct i2c_device_id dev_err(&client->dev, "failed to register sysfs #2\n"); goto err_sysfs_grp_create_2; } - wake_lock_init(&touch_lock, WAKE_LOCK_SUSPEND, "touch-lock"); devicePresent = true; @@ -903,113 +798,16 @@ err_ident_fail_or_input_alloc: err_sysfs_grp_create_1: kfree(gl_ts); -err_check_functionality_failed: - if (IT7260_wq) - destroy_workqueue(IT7260_wq); - err_out: return ret; } static int IT7260_ts_remove(struct i2c_client *client) { - destroy_workqueue(IT7260_wq); devicePresent = false; return 0; } -static long ite7260_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) -{ - static const uint8_t fakeCmdIrqOff[] = {0x00, 0x49, 0x54, 0x37, 0x32}; - static const uint8_t fakeCmdIrqOn[] = {0x80, 0x49, 0x54, 0x37, 0x32}; - uint8_t buffer[MAX_BUFFER_SIZE] = {0,}; - struct ioctl_cmd168 data = {0, }; - unsigned i; - - switch (cmd) { - case IOCTL_SET: - LOGE("direct command TX from userspace is undoubtedly bad!\n"); - if (copy_from_user(&data, (void __user *)arg, sizeof(struct ioctl_cmd168))) - return -EFAULT; - if (data.length >= sizeof(buffer)) - return -EINVAL; /* stop trying to overflow kernel stack! */ - - for (i = 0; i < data.length; i++) - buffer[i] = data.buffer[i]; - - if (data.bufferIndex == 0x60) { - if (!memcmp(buffer, fakeCmdIrqOff, sizeof(fakeCmdIrqOff))) { - pr_info("Disabling IRQ.\n"); - disable_irq(gl_ts->client->irq); - } else if (!memcmp(buffer, fakeCmdIrqOn, sizeof(fakeCmdIrqOff))) { - pr_info("Enabling IRQ.\n"); - enable_irq(gl_ts->client->irq); - } - LOGE("reserved command being sent to chip, this is probably bad!\n"); - } - i2cWriteNoReadyCheck(data.bufferIndex, buffer, data.length); - return 0; - - case IOCTL_GET: - LOGE("direct command RX from userspace is undoubtedly bad!\n"); - if (copy_from_user(&data, (void __user *)arg, sizeof(struct ioctl_cmd168))) - return -EFAULT; - if (data.length >= sizeof(buffer)) - return -EINVAL; /* stop trying to overflow kernel stack! */ - - if (!data.length) - data.buffer[0] = 128; - else { - i2cReadNoReadyCheck(data.bufferIndex, buffer, data.length); - for (i = 0; i < data.length; i++) - data.buffer[i] = buffer[i]; - } - - if (copy_to_user((int __user *)arg, &data, sizeof(struct ioctl_cmd168))) - return -EFAULT; - return 0; - - default: - return -ENOTTY; - } -} - -static int ite7260_open(struct inode *inode, struct file *filp) -{ - struct ite7260_perfile_data *dev; - int i; - - - dev = kmalloc(sizeof(struct ite7260_perfile_data), GFP_KERNEL); - if (!dev) - return -ENOMEM; - - rwlock_init(&dev->lock); - for (i = 0; i < MAX_BUFFER_SIZE; i++) - dev->buffer[i] = 0xFF; - - filp->private_data = dev; - - return 0; -} - -static int ite7260_close(struct inode *inode, struct file *filp) -{ - struct ite7260_perfile_data *dev = filp->private_data; - - if (dev) - kfree(dev); - - return 0; -} - -static const struct file_operations ite7260_fops = { - .owner = THIS_MODULE, - .open = ite7260_open, - .release = ite7260_close, - .unlocked_ioctl = ite7260_ioctl, -}; - static const struct i2c_device_id IT7260_ts_id[] = { { DEVICE_NAME, 0}, {} @@ -1022,10 +820,6 @@ static const struct of_device_id IT7260_match_table[] = { {}, }; -static struct notifier_block display_mode_notifier = { - .notifier_call = mode_notify_sys, -}; - static int IT7260_ts_resume(struct i2c_client *i2cdev) { isDeviceSuspend = false; @@ -1051,90 +845,7 @@ static struct i2c_driver IT7260_ts_driver = { .suspend = IT7260_ts_suspend, }; -static int __init IT7260_ts_init(void) -{ - dev_t dev; - - - if (alloc_chrdev_region(&dev, 0, 1, DEVICE_NAME)) { - LOGE("cdev can't get major number\n"); - goto err_cdev_alloc; - } - ite7260_major = MAJOR(dev); - - cdev_init(&ite7260_cdev, &ite7260_fops); - ite7260_cdev.owner = THIS_MODULE; - - if (cdev_add(&ite7260_cdev, MKDEV(ite7260_major, ite7260_minor), 1)) { - LOGE("cdev can't get minor number\n"); - goto err_cdev_add; - } - - ite7260_class = class_create(THIS_MODULE, DEVICE_NAME); - if (IS_ERR(ite7260_class)) { - LOGE("failed in creating class.\n"); - goto err_class_create; - } - - class_dev = device_create(ite7260_class, NULL, MKDEV(ite7260_major, ite7260_minor), NULL, DEVICE_NAME); - if (!class_dev) { - - LOGE("failed in creating device.\n"); - goto err_dev_create; - } - - if (device_create_file(class_dev, &device_attr) < 0) { - LOGE("failed in creating file.\n"); - goto err_file_create; - } - - register_mode_notifier(&display_mode_notifier); - - LOGI("=========================================\n"); - LOGI("register IT7260 cdev, major: %d, minor: %d \n", ite7260_major, ite7260_minor); - LOGI("=========================================\n"); - - if (!i2c_add_driver(&IT7260_ts_driver)) - return 0; - - unregister_mode_notifier(&display_mode_notifier); - device_remove_file(class_dev, &device_attr); - -err_file_create: - device_destroy(ite7260_class, ite7260_dev); - -err_dev_create: - class_destroy(ite7260_class); - -err_class_create: - cdev_del(&ite7260_cdev); - -err_cdev_add: - unregister_chrdev_region(dev, 1); - -err_cdev_alloc: - return -1; -} - -static void __exit IT7260_ts_exit(void) -{ - dev_t dev = MKDEV(ite7260_major, ite7260_minor); - - i2c_del_driver(&IT7260_ts_driver); - unregister_mode_notifier(&display_mode_notifier); - device_remove_file(class_dev, &device_attr); - device_destroy(ite7260_class, ite7260_dev); - class_destroy(ite7260_class); - cdev_del(&ite7260_cdev); - unregister_chrdev_region(dev, 1); - wake_lock_destroy(&touch_lock); - if (IT7260_wq) - destroy_workqueue(IT7260_wq); -} - -module_init(IT7260_ts_init); -module_exit(IT7260_ts_exit); +module_i2c_driver(IT7260_ts_driver); MODULE_DESCRIPTION("IT7260 Touchscreen Driver"); MODULE_LICENSE("GPL v2"); - |