// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2019 MediaTek Inc. */ #include "tpd.h" #include #include #include #include #include #include #include #include #include #ifdef CONFIG_COMPAT #include #endif /* for magnify velocity******************************************** */ #define TOUCH_IOC_MAGIC 'A' #define TPD_GET_VELOCITY_CUSTOM_X _IO(TOUCH_IOC_MAGIC, 0) #define TPD_GET_VELOCITY_CUSTOM_Y _IO(TOUCH_IOC_MAGIC, 1) #define TPD_GET_FILTER_PARA _IOWR(TOUCH_IOC_MAGIC, 2, struct tpd_filter_t) #ifdef CONFIG_COMPAT #define COMPAT_TPD_GET_FILTER_PARA _IOWR(TOUCH_IOC_MAGIC, \ 2, struct tpd_filter_t) #endif struct tpd_filter_t tpd_filter; struct tpd_dts_info tpd_dts_data; const struct of_device_id touch_of_match[] = { { .compatible = "goodix,touch", }, {}, }; void tpd_get_dts_info(void) { struct device_node *node1 = NULL; int key_dim_local[16], i; int convert_err = -EINVAL; node1 = of_find_matching_node(node1, touch_of_match); if (!node1) { TPD_ERR("can't find touch compatible custom node\n"); } else { of_property_read_u32(node1, "tpd-max-touch-num", &tpd_dts_data.touch_max_num); of_property_read_u32_array(node1, "tpd-resolution", tpd_dts_data.tpd_resolution, ARRAY_SIZE(tpd_dts_data.tpd_resolution)); TPD_DEBUG("[tpd] resulution is %d %d", tpd_dts_data.tpd_resolution[0], tpd_dts_data.tpd_resolution[1]); #if defined(CONFIG_LCM_WIDTH) && defined(CONFIG_LCM_HEIGHT) convert_err = kstrtou32(CONFIG_LCM_WIDTH, 10, &tpd_dts_data.lcm_resolution[0]); if (convert_err) TPD_ERR("GET LCM WIDTH failed!\n"); convert_err = kstrtou32(CONFIG_LCM_HEIGHT, 10, &tpd_dts_data.lcm_resolution[1]); if (convert_err) TPD_ERR("GET LCM HEIGHT failed!\n"); #else TPD_DEBUG("Set Default lcm-resolution!"); of_property_read_u32_array(node1, "lcm-resolution", tpd_dts_data.lcm_resolution, ARRAY_SIZE(tpd_dts_data.lcm_resolution)); #endif TPD_DEBUG("[lcm] resulution is %d %d", tpd_dts_data.lcm_resolution[0], tpd_dts_data.lcm_resolution[1]); if (tpd_dts_data.use_tpd_button) { of_property_read_u32(node1, "tpd-key-num", &tpd_dts_data.tpd_key_num); if (of_property_read_u32_array(node1, "tpd-key-local", tpd_dts_data.tpd_key_local, ARRAY_SIZE(tpd_dts_data.tpd_key_local))) TPD_DEBUG("tpd-key-local: %d %d %d %d", tpd_dts_data.tpd_key_local[0], tpd_dts_data.tpd_key_local[1], tpd_dts_data.tpd_key_local[2], tpd_dts_data.tpd_key_local[3]); if (of_property_read_u32_array(node1, "tpd-key-dim-local", key_dim_local, ARRAY_SIZE(key_dim_local))) { memcpy(tpd_dts_data.tpd_key_dim_local, key_dim_local, sizeof(key_dim_local)); for (i = 0; i < 4; i++) { pr_info("[tpd]key[%d].key_x = %d\n", i, tpd_dts_data .tpd_key_dim_local[i] .key_x); pr_info("[tpd]key[%d].key_y = %d\n", i, tpd_dts_data .tpd_key_dim_local[i] .key_y); pr_info("[tpd]key[%d].key_W = %d\n", i, tpd_dts_data .tpd_key_dim_local[i] .key_width); pr_info("[tpd]key[%d].key_H = %d\n", i, tpd_dts_data .tpd_key_dim_local[i] .key_height); } } } of_property_read_u32(node1, "tpd-filter-enable", &tpd_dts_data.touch_filter.enable); if (tpd_dts_data.touch_filter.enable) { of_property_read_u32(node1, "tpd-filter-pixel-density", &tpd_dts_data.touch_filter.pixel_density); if (of_property_read_u32_array(node1, "tpd-filter-custom-prameters", (u32 *)tpd_dts_data.touch_filter.W_W, ARRAY_SIZE(tpd_dts_data.touch_filter.W_W))) TPD_DEBUG("get tpd-filter-custom-parameters"); if (of_property_read_u32_array(node1, "tpd-filter-custom-speed", tpd_dts_data.touch_filter.VECLOCITY_THRESHOLD, ARRAY_SIZE(tpd_dts_data .touch_filter .VECLOCITY_THRESHOLD))) TPD_DEBUG("get tpd-filter-custom-speed"); } memcpy(&tpd_filter, &tpd_dts_data.touch_filter, sizeof(tpd_filter)); TPD_DEBUG("[tpd]tpd-filter-enable = %d, pixel_density = %d\n", tpd_filter.enable, tpd_filter.pixel_density); tpd_dts_data.tpd_use_ext_gpio = of_property_read_bool(node1, "tpd-use-ext-gpio"); of_property_read_u32(node1, "tpd-rst-ext-gpio-num", &tpd_dts_data.rst_ext_gpio_num); tpd_dts_data.eint_gpio_num = of_get_named_gpio(node1, "goodix,eint-gpio", 0); if (tpd_dts_data.eint_gpio_num < 0) { TPD_DEBUG("tpd Invalid eint-gpio in dt: %d\n", tpd_dts_data.eint_gpio_num); } tpd_dts_data.rst_gpio_num = of_get_named_gpio(node1, "goodix,reset-gpio", 0); if (tpd_dts_data.rst_gpio_num < 0) { TPD_DEBUG("tpd Invalid reset-gpio in dt: %d\n", tpd_dts_data.rst_gpio_num); } if (of_property_read_string(node1, "tpd-cfg-version", &tpd_dts_data.cfg_version)) TPD_DEBUG("tpd-cfg-version: %s\n", tpd_dts_data.cfg_version); tpd_dts_data.x2x = of_property_read_bool(node1, "goodix,x2x"); tpd_dts_data.y2y = of_property_read_bool(node1, "goodix,y2y"); } } static int tpd_misc_open(struct inode *inode, struct file *file) { return nonseekable_open(inode, file); } static int tpd_misc_release(struct inode *inode, struct file *file) { return 0; } #ifdef CONFIG_COMPAT static long tpd_compat_ioctl( struct file *file, unsigned int cmd, unsigned long arg) { long ret; void __user *arg32 = compat_ptr(arg); if (!file->f_op || !file->f_op->unlocked_ioctl) return -ENOTTY; switch (cmd) { case COMPAT_TPD_GET_FILTER_PARA: if (arg32 == NULL) { TPD_DEBUG("invalid argument."); return -EINVAL; } ret = file->f_op->unlocked_ioctl(file, TPD_GET_FILTER_PARA, (unsigned long)arg32); if (ret) { TPD_DEBUG("TPD_GET_FILTER_PARA unlocked_ioctl failed."); return ret; } break; default: TPD_DEBUG("tpd: unknown IOCTL: 0x%08x\n", cmd); ret = -ENOIOCTLCMD; break; } return ret; } #endif static long tpd_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { /* char strbuf[256]; */ void __user *data; long err = 0; if (_IOC_DIR(cmd) & _IOC_READ) err = !access_ok(VERIFY_WRITE, (void __user *)arg, _IOC_SIZE(cmd)); else if (_IOC_DIR(cmd) & _IOC_WRITE) err = !access_ok(VERIFY_READ, (void __user *)arg, _IOC_SIZE(cmd)); if (err) { TPD_DEBUG("tpd: access error: %08X, (%2d, %2d)\n", cmd, _IOC_DIR(cmd), _IOC_SIZE(cmd)); return -EFAULT; } switch (cmd) { case TPD_GET_VELOCITY_CUSTOM_X: data = (void __user *)arg; if (data == NULL) { err = -EINVAL; break; } if (copy_to_user(data, &tpd_v_magnify_x, sizeof(tpd_v_magnify_x))) { err = -EFAULT; break; } break; case TPD_GET_VELOCITY_CUSTOM_Y: data = (void __user *)arg; if (data == NULL) { err = -EINVAL; break; } if (copy_to_user(data, &tpd_v_magnify_y, sizeof(tpd_v_magnify_y))) { err = -EFAULT; break; } break; case TPD_GET_FILTER_PARA: data = (void __user *) arg; if (data == NULL) { err = -EINVAL; TPD_ERR("GET_FILTER_PARA: data is null\n"); break; } if (copy_to_user(data, &tpd_filter, sizeof(struct tpd_filter_t))) { TPD_ERR("GET_FILTER_PARA: copy data error\n"); err = -EFAULT; break; } break; default: TPD_DEBUG("tpd: unknown IOCTL: 0x%08x\n", cmd); err = -ENOIOCTLCMD; break; } return err; } static struct work_struct touch_resume_work; static struct workqueue_struct *touch_resume_workqueue; static const struct file_operations tpd_fops = { /* .owner = THIS_MODULE, */ .open = tpd_misc_open, .release = tpd_misc_release, .unlocked_ioctl = tpd_unlocked_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl = tpd_compat_ioctl, #endif }; /*---------------------------------------------------------------------------*/ static struct miscdevice tpd_misc_device = { .minor = MISC_DYNAMIC_MINOR, .name = "touch", .fops = &tpd_fops, }; /* ********************************************** */ /* #endif */ /* function definitions */ static int __init tpd_device_init(void); static void __exit tpd_device_exit(void); static int tpd_probe(struct platform_device *pdev); static int tpd_remove(struct platform_device *pdev); static struct work_struct tpd_init_work; static struct workqueue_struct *tpd_init_workqueue; static int tpd_suspend_flag; int tpd_register_flag; /* global variable definitions */ struct tpd_device *tpd; static struct tpd_driver_t tpd_driver_list[TP_DRV_MAX_COUNT]; /* = {0}; */ struct platform_device tpd_device = { .name = TPD_DEVICE, .id = -1, }; const struct dev_pm_ops tpd_pm_ops = { .suspend = NULL, .resume = NULL, }; static struct platform_driver tpd_driver = { .remove = tpd_remove, .shutdown = NULL, .probe = tpd_probe, .driver = { .name = TPD_DEVICE, .pm = &tpd_pm_ops, .owner = THIS_MODULE, .of_match_table = touch_of_match, }, }; static struct tpd_driver_t *g_tpd_drv; /* hh: use fb_notifier */ static struct notifier_block tpd_fb_notifier; /* use fb_notifier */ static void touch_resume_workqueue_callback(struct work_struct *work) { TPD_DEBUG("GTP %s\n", __func__); g_tpd_drv->resume(NULL); tpd_suspend_flag = 0; } static int tpd_fb_notifier_callback( struct notifier_block *self, unsigned long event, void *data) { struct fb_event *evdata = NULL; int blank; int err = 0; TPD_DEBUG("%s\n", __func__); evdata = data; /* If we aren't interested in this event, skip it immediately ... */ if (event != FB_EVENT_BLANK) return 0; blank = *(int *)evdata->data; TPD_DEBUG("fb_notify(blank=%d)\n", blank); switch (blank) { case FB_BLANK_UNBLANK: TPD_DEBUG("LCD ON Notify\n"); if (g_tpd_drv && tpd_suspend_flag) { err = queue_work(touch_resume_workqueue, &touch_resume_work); if (!err) { TPD_ERR("start resume_workqueue failed\n"); return err; } } break; case FB_BLANK_POWERDOWN: TPD_DEBUG("LCD OFF Notify\n"); if (g_tpd_drv && !tpd_suspend_flag) { err = cancel_work_sync(&touch_resume_work); if (!err) TPD_ERR("cancel resume_workqueue failed\n"); g_tpd_drv->suspend(NULL); } tpd_suspend_flag = 1; break; default: break; } return 0; } /* Add driver: if find TPD_TYPE_CAPACITIVE driver successfully, loading it */ int tpd_driver_add(struct tpd_driver_t *tpd_drv) { int i; if (g_tpd_drv != NULL) { TPD_ERR("touch driver exist\n"); return -1; } /* check parameter */ if (tpd_drv == NULL) return -1; tpd_drv->tpd_have_button = tpd_dts_data.use_tpd_button; /* R-touch */ if (strcmp(tpd_drv->tpd_device_name, "generic") == 0) { tpd_driver_list[0].tpd_device_name = tpd_drv->tpd_device_name; tpd_driver_list[0].tpd_local_init = tpd_drv->tpd_local_init; tpd_driver_list[0].suspend = tpd_drv->suspend; tpd_driver_list[0].resume = tpd_drv->resume; tpd_driver_list[0].tpd_have_button = tpd_drv->tpd_have_button; return 0; } for (i = 1; i < TP_DRV_MAX_COUNT; i++) { /* add tpd driver into list */ if (tpd_driver_list[i].tpd_device_name == NULL) { tpd_driver_list[i].tpd_device_name = tpd_drv->tpd_device_name; tpd_driver_list[i].tpd_local_init = tpd_drv->tpd_local_init; tpd_driver_list[i].suspend = tpd_drv->suspend; tpd_driver_list[i].resume = tpd_drv->resume; tpd_driver_list[i].tpd_have_button = tpd_drv->tpd_have_button; tpd_driver_list[i].attrs = tpd_drv->attrs; break; } if (strcmp(tpd_driver_list[i].tpd_device_name, tpd_drv->tpd_device_name) == 0) return 1; /* driver exist */ } return 0; } int tpd_driver_remove(struct tpd_driver_t *tpd_drv) { int i = 0; /* check parameter */ if (tpd_drv == NULL) return -1; for (i = 0; i < TP_DRV_MAX_COUNT; i++) { /* find it */ if (strcmp(tpd_driver_list[i].tpd_device_name, tpd_drv->tpd_device_name) == 0) { memset(&tpd_driver_list[i], 0, sizeof(struct tpd_driver_t)); break; } } return 0; } static void tpd_create_attributes(struct device *dev, struct tpd_attrs *attrs) { int num = attrs->num; for (; num > 0;) { if (device_create_file(dev, attrs->attr[--num])) TPD_DEBUG("tpd create attributes file failed\n"); } } /* touch panel probe */ static int tpd_probe(struct platform_device *pdev) { int touch_type = 1; /* 0:R-touch, 1: Cap-touch */ int i = 0; TPD_DEBUG("enter %s, %d\n", __func__, __LINE__); tpd = kmalloc(sizeof(struct tpd_device), GFP_KERNEL); if (tpd == NULL) return -ENOMEM; memset(tpd, 0, sizeof(struct tpd_device)); /* allocate input device */ tpd->dev = input_allocate_device(); if (tpd->dev == NULL) { kfree(tpd); return -ENOMEM; } tpd_mode = TPD_MODE_NORMAL; tpd_mode_axis = 0; tpd_mode_min = tpd_dts_data.lcm_resolution[1] / 2; tpd_mode_max = tpd_dts_data.lcm_resolution[1]; tpd_mode_keypad_tolerance = tpd_dts_data.lcm_resolution[0] * tpd_dts_data.lcm_resolution[0] / 1600; /* save dev for regulator_get() before tpd_local_init() */ tpd->tpd_dev = &pdev->dev; for (i = 1; i < TP_DRV_MAX_COUNT; i++) { /* add tpd driver into list */ if (tpd_driver_list[i].tpd_device_name != NULL) { tpd_driver_list[i].tpd_local_init(); /* msleep(1); */ if (tpd_load_status == 1) { TPD_DEBUG("%s, tpd_driver_name=%s\n", __func__, tpd_driver_list[i].tpd_device_name); g_tpd_drv = &tpd_driver_list[i]; break; } } } if (g_tpd_drv == NULL) { if (tpd_driver_list[0].tpd_device_name != NULL) { g_tpd_drv = &tpd_driver_list[0]; /* touch_type:0: r-touch, 1: C-touch */ touch_type = 0; g_tpd_drv->tpd_local_init(); TPD_DEBUG("Generic touch panel driver\n"); } else { TPD_ERR("no touch driver is loaded!!\n"); return 0; } } touch_resume_workqueue = create_singlethread_workqueue("touch_resume"); INIT_WORK(&touch_resume_work, touch_resume_workqueue_callback); /* use fb_notifier */ tpd_fb_notifier.notifier_call = tpd_fb_notifier_callback; if (fb_register_client(&tpd_fb_notifier)) TPD_ERR("register fb_notifier fail!\n"); /* TPD_TYPE_CAPACITIVE handle */ if (touch_type == 1) { /* struct input_dev dev initialization and registration */ tpd->dev->name = TPD_INPUT_DEVICE; set_bit(EV_SYN, tpd->dev->evbit); set_bit(EV_ABS, tpd->dev->evbit); set_bit(EV_KEY, tpd->dev->evbit); set_bit(BTN_TOUCH, tpd->dev->keybit); set_bit(BTN_TOOL_FINGER, tpd->dev->keybit); set_bit(ABS_MT_TRACKING_ID, tpd->dev->absbit); set_bit(ABS_MT_TOUCH_MAJOR, tpd->dev->absbit); set_bit(ABS_MT_TOUCH_MINOR, tpd->dev->absbit); set_bit(ABS_MT_POSITION_X, tpd->dev->absbit); set_bit(ABS_MT_POSITION_Y, tpd->dev->absbit); set_bit(INPUT_PROP_DIRECT, tpd->dev->propbit); input_set_abs_params(tpd->dev, ABS_MT_POSITION_X, 0, tpd_dts_data.lcm_resolution[0], 0, 0); input_set_abs_params(tpd->dev, ABS_MT_POSITION_Y, 0, tpd_dts_data.lcm_resolution[1], 0, 0); input_set_abs_params(tpd->dev, ABS_MT_TOUCH_MAJOR, 0, 100, 0, 0); input_set_abs_params(tpd->dev, ABS_MT_TOUCH_MINOR, 0, 100, 0, 0); TPD_DEBUG("Cap touch panel driver\n"); } if (input_register_device(tpd->dev)) TPD_ERR("input_register_device failed.(tpd)\n"); else tpd_register_flag = 1; if (g_tpd_drv->tpd_have_button) tpd_button_init(); if (g_tpd_drv->attrs.num) tpd_create_attributes(&pdev->dev, &g_tpd_drv->attrs); if (misc_register(&tpd_misc_device)) TPD_ERR("mtk_tpd: tpd_misc_device register failed\n"); return 0; } static int tpd_remove(struct platform_device *pdev) { input_unregister_device(tpd->dev); return 0; } /* called when loaded into kernel */ static void tpd_init_work_callback(struct work_struct *work) { TPD_DEBUG("MediaTek touch panel driver init\n"); if (platform_driver_register(&tpd_driver) != 0) TPD_ERR("unable to register touch panel driver.\n"); } static int __init tpd_device_init(void) { int res = 0; /* load touch driver first */ gt1x_driver_init(); tpd_log_init(); tpd_init_workqueue = create_singlethread_workqueue("mtk-tpd"); INIT_WORK(&tpd_init_work, tpd_init_work_callback); res = queue_work(tpd_init_workqueue, &tpd_init_work); if (!res) TPD_ERR("tpd : touch device init failed res:%d\n", res); return 0; } static void __exit tpd_device_exit(void) { tpd_log_exit(); gt1x_generic_exit(); misc_deregister(&tpd_misc_device); fb_unregister_client(&tpd_fb_notifier); gt1x_driver_exit(); cancel_work_sync(&tpd_init_work); destroy_workqueue(tpd_init_workqueue); platform_driver_unregister(&tpd_driver); TPD_DEBUG("Touch exit done\n"); } late_initcall(tpd_device_init); module_exit(tpd_device_exit); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("MediaTek touch panel driver");