/* * Synaptics DSX touchscreen driver * * Copyright (C) 2012 Synaptics Incorporated * * Copyright (C) 2012 Alexandra Chin * Copyright (C) 2012 Scott Lin * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #define DEBUG 1 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "cust_gpio_usage.h" #include "tpd.h" #include "synaptics_dsx_i2c.h" #include "synaptics_dsx.h" #include "tpd_custom_synaptics.h" #ifdef KERNEL_ABOVE_2_6_38 #include #endif #define DRIVER_NAME "synaptics_dsx_i2c" #define INPUT_PHYS_NAME "synaptics_dsx_i2c/input0" #define TPD_POWER_SOURCE MT6323_POWER_LDO_VGP1 #define TPD_I2C_NUMBER 0 #define TPD_I2C_ADDR 0x38 #ifdef KERNEL_ABOVE_2_6_38 #define TYPE_B_PROTOCOL #endif #define NO_0D_WHILE_2D /* #define REPORT_2D_Z */ #define REPORT_2D_W #define F12_DATA_15_WORKAROUND /* #define IGNORE_FN_INIT_FAILURE */ #define RPT_TYPE (1 << 0) #define RPT_X_LSB (1 << 1) #define RPT_X_MSB (1 << 2) #define RPT_Y_LSB (1 << 3) #define RPT_Y_MSB (1 << 4) #define RPT_Z (1 << 5) #define RPT_WX (1 << 6) #define RPT_WY (1 << 7) #define RPT_DEFAULT (RPT_TYPE | RPT_X_LSB | RPT_X_MSB | RPT_Y_LSB | RPT_Y_MSB) #define EXP_FN_WORK_DELAY_MS 1000 /* ms */ #define SYN_I2C_RETRY_TIMES 10 #define MAX_F11_TOUCH_WIDTH 15 #define CHECK_STATUS_TIMEOUT_MS 100 #define DELAY_S7300_BOOT_READY 160 #define DELAY_S7300_RESET 20 #define DELAY_S7300_RESET_READY 90 #define I2C_DMA_LIMIT 252 #define F01_STD_QUERY_LEN 21 #define F01_BUID_ID_OFFSET 18 #define F11_STD_QUERY_LEN 9 #define F11_STD_CTRL_LEN 10 #define F11_STD_DATA_LEN 12 #define STATUS_NO_ERROR 0x00 #define STATUS_RESET_OCCURRED 0x01 #define STATUS_INVALID_CONFIG 0x02 #define STATUS_DEVICE_FAILURE 0x03 #define STATUS_CONFIG_CRC_FAILURE 0x04 #define STATUS_FIRMWARE_CRC_FAILURE 0x05 #define STATUS_CRC_IN_PROGRESS 0x06 #define NORMAL_OPERATION (0 << 0) #define SENSOR_SLEEP (1 << 0) #define NO_SLEEP_OFF (0 << 2) #define NO_SLEEP_ON (1 << 2) #define CONFIGURED (1 << 7) // for MTK static struct task_struct *thread = NULL; static DECLARE_WAIT_QUEUE_HEAD(waiter); static int tpd_halt = 0; static int tpd_flag = 0; #ifdef TPD_HAVE_BUTTON static int tpd_keys_local[TPD_KEY_COUNT] = TPD_KEYS; static int tpd_keys_dim_local[TPD_KEY_COUNT][4] = TPD_KEYS_DIM; #endif static u8 boot_mode; // for DMA accessing static u8 *gpwDMABuf_va = NULL; static u32 gpwDMABuf_pa = NULL; static u8 *gprDMABuf_va = NULL; static u32 gprDMABuf_pa = NULL; struct i2c_msg *read_msg; // extern function extern void mt_eint_unmask(unsigned int line); extern void mt_eint_mask(unsigned int line); extern void mt_eint_set_hw_debounce(unsigned int eintno, unsigned int ms); extern unsigned int mt_eint_set_sens(unsigned int eintno, unsigned int sens); extern void mt_eint_registration(unsigned int eint_num, unsigned int flag, void (EINT_FUNC_PTR) (void), unsigned int is_auto_umask); static void tpd_eint_handler(void); static int touch_event_handler(void *data); static int synaptics_rmi4_i2c_read(struct synaptics_rmi4_data *rmi4_data, unsigned short addr, unsigned char *data, unsigned short length); static int synaptics_rmi4_i2c_write(struct synaptics_rmi4_data *rmi4_data, unsigned short addr, unsigned char *data, unsigned short length); static int synaptics_rmi4_f12_set_enables(struct synaptics_rmi4_data *rmi4_data, unsigned short ctrl28); static int synaptics_rmi4_free_fingers(struct synaptics_rmi4_data *rmi4_data); static int synaptics_rmi4_reinit_device(struct synaptics_rmi4_data *rmi4_data); static int synaptics_rmi4_reset_device(struct synaptics_rmi4_data *rmi4_data); #ifdef CONFIG_HAS_EARLYSUSPEND static ssize_t synaptics_rmi4_full_pm_cycle_show(struct device *dev, struct device_attribute *attr, char *buf); static ssize_t synaptics_rmi4_full_pm_cycle_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count); static void synaptics_rmi4_early_suspend(struct early_suspend *h); static void synaptics_rmi4_late_resume(struct early_suspend *h); #endif static int synaptics_rmi4_suspend(struct device *dev); static int synaptics_rmi4_resume(struct device *dev); static ssize_t synaptics_rmi4_f01_reset_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count); static ssize_t synaptics_rmi4_f01_productinfo_show(struct device *dev, struct device_attribute *attr, char *buf); static ssize_t synaptics_rmi4_f01_buildid_show(struct device *dev, struct device_attribute *attr, char *buf); static ssize_t synaptics_rmi4_f01_flashprog_show(struct device *dev, struct device_attribute *attr, char *buf); static ssize_t synaptics_rmi4_0dbutton_show(struct device *dev, struct device_attribute *attr, char *buf); static ssize_t synaptics_rmi4_0dbutton_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count); static ssize_t synaptics_rmi4_suspend_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count); struct synaptics_rmi4_f01_device_status { union { struct { unsigned char status_code:4; unsigned char reserved:2; unsigned char flash_prog:1; unsigned char unconfigured:1; } __packed; unsigned char data[1]; }; }; struct synaptics_rmi4_f12_query_5 { union { struct { unsigned char size_of_query6; struct { unsigned char ctrl0_is_present:1; unsigned char ctrl1_is_present:1; unsigned char ctrl2_is_present:1; unsigned char ctrl3_is_present:1; unsigned char ctrl4_is_present:1; unsigned char ctrl5_is_present:1; unsigned char ctrl6_is_present:1; unsigned char ctrl7_is_present:1; } __packed; struct { unsigned char ctrl8_is_present:1; unsigned char ctrl9_is_present:1; unsigned char ctrl10_is_present:1; unsigned char ctrl11_is_present:1; unsigned char ctrl12_is_present:1; unsigned char ctrl13_is_present:1; unsigned char ctrl14_is_present:1; unsigned char ctrl15_is_present:1; } __packed; struct { unsigned char ctrl16_is_present:1; unsigned char ctrl17_is_present:1; unsigned char ctrl18_is_present:1; unsigned char ctrl19_is_present:1; unsigned char ctrl20_is_present:1; unsigned char ctrl21_is_present:1; unsigned char ctrl22_is_present:1; unsigned char ctrl23_is_present:1; } __packed; struct { unsigned char ctrl24_is_present:1; unsigned char ctrl25_is_present:1; unsigned char ctrl26_is_present:1; unsigned char ctrl27_is_present:1; unsigned char ctrl28_is_present:1; unsigned char ctrl29_is_present:1; unsigned char ctrl30_is_present:1; unsigned char ctrl31_is_present:1; } __packed; }; unsigned char data[5]; }; }; struct synaptics_rmi4_f12_query_8 { union { struct { unsigned char size_of_query9; struct { unsigned char data0_is_present:1; unsigned char data1_is_present:1; unsigned char data2_is_present:1; unsigned char data3_is_present:1; unsigned char data4_is_present:1; unsigned char data5_is_present:1; unsigned char data6_is_present:1; unsigned char data7_is_present:1; } __packed; struct { unsigned char data8_is_present:1; unsigned char data9_is_present:1; unsigned char data10_is_present:1; unsigned char data11_is_present:1; unsigned char data12_is_present:1; unsigned char data13_is_present:1; unsigned char data14_is_present:1; unsigned char data15_is_present:1; } __packed; }; unsigned char data[3]; }; }; struct synaptics_rmi4_f12_ctrl_8 { union { struct { unsigned char max_x_coord_lsb; unsigned char max_x_coord_msb; unsigned char max_y_coord_lsb; unsigned char max_y_coord_msb; unsigned char rx_pitch_lsb; unsigned char rx_pitch_msb; unsigned char tx_pitch_lsb; unsigned char tx_pitch_msb; unsigned char low_rx_clip; unsigned char high_rx_clip; unsigned char low_tx_clip; unsigned char high_tx_clip; unsigned char num_of_rx; unsigned char num_of_tx; }; unsigned char data[14]; }; }; struct synaptics_rmi4_f12_ctrl_23 { union { struct { unsigned char obj_type_enable; unsigned char max_reported_objects; }; unsigned char data[2]; }; }; struct synaptics_rmi4_f12_finger_data { unsigned char object_type_and_status; unsigned char x_lsb; unsigned char x_msb; unsigned char y_lsb; unsigned char y_msb; #ifdef REPORT_2D_Z unsigned char z; #endif #ifdef REPORT_2D_W unsigned char wx; unsigned char wy; #endif }; struct synaptics_rmi4_f1a_query { union { struct { unsigned char max_button_count:3; unsigned char reserved:5; unsigned char has_general_control:1; unsigned char has_interrupt_enable:1; unsigned char has_multibutton_select:1; unsigned char has_tx_rx_map:1; unsigned char has_perbutton_threshold:1; unsigned char has_release_threshold:1; unsigned char has_strongestbtn_hysteresis:1; unsigned char has_filter_strength:1; } __packed; unsigned char data[2]; }; }; struct synaptics_rmi4_f1a_control_0 { union { struct { unsigned char multibutton_report:2; unsigned char filter_mode:2; unsigned char reserved:4; } __packed; unsigned char data[1]; }; }; struct synaptics_rmi4_f1a_control { struct synaptics_rmi4_f1a_control_0 general_control; unsigned char button_int_enable; unsigned char multi_button; unsigned char *txrx_map; unsigned char *button_threshold; unsigned char button_release_threshold; unsigned char strongest_button_hysteresis; unsigned char filter_strength; }; struct synaptics_rmi4_f1a_handle { int button_bitmask_size; unsigned char max_count; unsigned char valid_button_count; unsigned char *button_data_buffer; unsigned char *button_map; struct synaptics_rmi4_f1a_query button_query; struct synaptics_rmi4_f1a_control button_control; }; struct synaptics_rmi4_exp_fhandler { struct synaptics_rmi4_exp_fn *exp_fn; bool insert; bool remove; struct list_head link; }; struct synaptics_rmi4_exp_fn_data { bool initialized; bool queue_work; struct mutex mutex; struct list_head list; struct delayed_work work; struct workqueue_struct *workqueue; struct synaptics_rmi4_data *rmi4_data; }; static struct synaptics_rmi4_exp_fn_data exp_data; static struct device_attribute attrs[] = { #ifdef CONFIG_HAS_EARLYSUSPEND __ATTR(full_pm_cycle, (S_IRUGO | S_IWUGO), synaptics_rmi4_full_pm_cycle_show, synaptics_rmi4_full_pm_cycle_store), #endif __ATTR(reset, S_IWUGO, synaptics_rmi4_show_error, synaptics_rmi4_f01_reset_store), __ATTR(productinfo, S_IRUGO, synaptics_rmi4_f01_productinfo_show, synaptics_rmi4_store_error), __ATTR(buildid, S_IRUGO, synaptics_rmi4_f01_buildid_show, synaptics_rmi4_store_error), __ATTR(flashprog, S_IRUGO, synaptics_rmi4_f01_flashprog_show, synaptics_rmi4_store_error), __ATTR(0dbutton, (S_IRUGO | S_IWUGO), synaptics_rmi4_0dbutton_show, synaptics_rmi4_0dbutton_store), __ATTR(suspend, S_IWUGO, synaptics_rmi4_show_error, synaptics_rmi4_suspend_store), }; #ifdef CONFIG_HAS_EARLYSUSPEND static ssize_t synaptics_rmi4_full_pm_cycle_show(struct device *dev, struct device_attribute *attr, char *buf) { struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev); return snprintf(buf, PAGE_SIZE, "%u\n", rmi4_data->full_pm_cycle); } static ssize_t synaptics_rmi4_full_pm_cycle_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned int input; struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev); if (sscanf(buf, "%u", &input) != 1) return -EINVAL; rmi4_data->full_pm_cycle = input > 0 ? 1 : 0; return count; } #endif static ssize_t synaptics_rmi4_f01_reset_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { int retval; unsigned int reset; struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev); if (sscanf(buf, "%u", &reset) != 1) return -EINVAL; if (reset != 1) return -EINVAL; retval = synaptics_rmi4_reset_device(rmi4_data); if (retval < 0) { dev_err(dev, "%s: Failed to issue reset command, error = %d\n", __func__, retval); return retval; } return count; } static ssize_t synaptics_rmi4_f01_productinfo_show(struct device *dev, struct device_attribute *attr, char *buf) { struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev); return snprintf(buf, PAGE_SIZE, "0x%02x 0x%02x\n", (rmi4_data->rmi4_mod_info.product_info[0]), (rmi4_data->rmi4_mod_info.product_info[1])); } static ssize_t synaptics_rmi4_f01_buildid_show(struct device *dev, struct device_attribute *attr, char *buf) { struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev); return snprintf(buf, PAGE_SIZE, "%u\n", rmi4_data->firmware_id); } static ssize_t synaptics_rmi4_f01_flashprog_show(struct device *dev, struct device_attribute *attr, char *buf) { int retval; struct synaptics_rmi4_f01_device_status device_status; struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev); retval = synaptics_rmi4_i2c_read(rmi4_data, rmi4_data->f01_data_base_addr, device_status.data, sizeof(device_status.data)); if (retval < 0) { dev_err(dev, "%s: Failed to read device status, error = %d\n", __func__, retval); return retval; } return snprintf(buf, PAGE_SIZE, "%u\n", device_status.flash_prog); } static ssize_t synaptics_rmi4_0dbutton_show(struct device *dev, struct device_attribute *attr, char *buf) { struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev); return snprintf(buf, PAGE_SIZE, "%u\n", rmi4_data->button_0d_enabled); } static ssize_t synaptics_rmi4_0dbutton_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { int retval; unsigned int input; unsigned char ii; unsigned char intr_enable; struct synaptics_rmi4_fn *fhandler; struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev); struct synaptics_rmi4_device_info *rmi; rmi = &(rmi4_data->rmi4_mod_info); if (sscanf(buf, "%u", &input) != 1) return -EINVAL; input = input > 0 ? 1 : 0; if (rmi4_data->button_0d_enabled == input) return count; if (list_empty(&rmi->support_fn_list)) return -ENODEV; list_for_each_entry(fhandler, &rmi->support_fn_list, link) { if (fhandler->fn_number == SYNAPTICS_RMI4_F1A) { ii = fhandler->intr_reg_num; retval = synaptics_rmi4_i2c_read(rmi4_data, rmi4_data->f01_ctrl_base_addr + 1 + ii, &intr_enable, sizeof(intr_enable)); if (retval < 0) return retval; if (input == 1) intr_enable |= fhandler->intr_mask; else intr_enable &= ~fhandler->intr_mask; retval = synaptics_rmi4_i2c_write(rmi4_data, rmi4_data->f01_ctrl_base_addr + 1 + ii, &intr_enable, sizeof(intr_enable)); if (retval < 0) return retval; } } rmi4_data->button_0d_enabled = input; return count; } static ssize_t synaptics_rmi4_suspend_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned int input; if (sscanf(buf, "%u", &input) != 1) return -EINVAL; if (input == 1) synaptics_rmi4_suspend(dev); else if (input == 0) synaptics_rmi4_resume(dev); else return -EINVAL; return count; } /** * synaptics_rmi4_set_page() * * Called by synaptics_rmi4_i2c_read() and synaptics_rmi4_i2c_write(). * * This function writes to the page select register to switch to the * assigned page. */ static int synaptics_rmi4_set_page(struct synaptics_rmi4_data *rmi4_data, unsigned int address) { int retval = 0; unsigned char retry; unsigned char buf[PAGE_SELECT_LEN]; unsigned char page; struct i2c_client *i2c = rmi4_data->i2c_client; page = ((address >> 8) & MASK_8BIT); if (page != rmi4_data->current_page) { buf[0] = MASK_8BIT; buf[1] = page; for (retry = 0; retry < SYN_I2C_RETRY_TIMES; retry++) { retval = i2c_master_send(i2c, buf, PAGE_SELECT_LEN); if (retval != PAGE_SELECT_LEN) { dev_err(&i2c->dev, "%s: I2C retry %d\n", __func__, retry + 1); msleep(20); } else { rmi4_data->current_page = page; break; } } } else { retval = PAGE_SELECT_LEN; } return (retval == PAGE_SELECT_LEN) ? retval : -EIO; } /** * synaptics_rmi4_i2c_read() * * Called by various functions in this driver, and also exported to * other expansion Function modules such as rmi_dev. * * This function reads data of an arbitrary length from the sensor, * starting from an assigned register address of the sensor, via I2C * with a retry mechanism. */ static int synaptics_rmi4_i2c_read(struct synaptics_rmi4_data *rmi4_data, unsigned short addr, unsigned char *data, unsigned short length) { int retval; unsigned char retry; unsigned char buf; unsigned char *buf_va = NULL; int full = length / I2C_DMA_LIMIT; int partial = length % I2C_DMA_LIMIT; int total; int last; int ii; static int msg_length; mutex_lock(&(rmi4_data->rmi4_io_ctrl_mutex)); if(!gprDMABuf_va){ gprDMABuf_va = (u8 *)dma_alloc_coherent(NULL, 4096, &gprDMABuf_pa, GFP_KERNEL); if(!gprDMABuf_va){ printk("[Error] Allocate DMA I2C Buffer failed!\n"); } } buf_va = gprDMABuf_va; if ((full + 2) > msg_length) { kfree(read_msg); msg_length = full + 2; read_msg = kcalloc(msg_length, sizeof(struct i2c_msg), GFP_KERNEL); } read_msg[0].addr = rmi4_data->i2c_client->addr; read_msg[0].flags = 0; read_msg[0].len = 1; read_msg[0].buf = &buf; read_msg[0].timing = 400; if (partial) { total = full + 1; last = partial; } else { total = full; last = I2C_DMA_LIMIT; } for (ii = 1; ii <= total; ii++) { read_msg[ii].addr = rmi4_data->i2c_client->addr; read_msg[ii].flags = I2C_M_RD; read_msg[ii].len = (ii == total) ? last : I2C_DMA_LIMIT; read_msg[ii].buf = gprDMABuf_pa + I2C_DMA_LIMIT * (ii - 1); read_msg[ii].ext_flag = (rmi4_data->i2c_client->ext_flag | I2C_ENEXT_FLAG | I2C_DMA_FLAG); read_msg[ii].timing = 400; } buf = addr & MASK_8BIT; retval = synaptics_rmi4_set_page(rmi4_data, addr); if (retval != PAGE_SELECT_LEN) goto exit; for (retry = 0; retry < SYN_I2C_RETRY_TIMES; retry++) { if (i2c_transfer(rmi4_data->i2c_client->adapter, read_msg, (total + 1)) == (total + 1)) { retval = length; break; } dev_err(&rmi4_data->i2c_client->dev, "%s: I2C retry %d\n", __func__, retry + 1); msleep(20); } if (retry == SYN_I2C_RETRY_TIMES) { dev_err(&rmi4_data->i2c_client->dev, "%s: I2C read over retry limit\n", __func__); retval = -EIO; } memcpy(data, buf_va, length); exit: /* if(gprDMABuf_va){ */ /* dma_free_coherent(NULL, 4096, gprDMABuf_va, gprDMABuf_pa); */ /* gprDMABuf_va = NULL; */ /* gprDMABuf_pa = NULL; */ /* } */ mutex_unlock(&(rmi4_data->rmi4_io_ctrl_mutex)); return retval; } /** * synaptics_rmi4_i2c_write() * * Called by various functions in this driver, and also exported to * other expansion Function modules such as rmi_dev. * * This function writes data of an arbitrary length to the sensor, * starting from an assigned register address of the sensor, via I2C with * a retry mechanism. */ static int synaptics_rmi4_i2c_write(struct synaptics_rmi4_data *rmi4_data, unsigned short addr, unsigned char *data, unsigned short length) { int retval; unsigned char retry; unsigned char buf[length + 1]; unsigned char *buf_va = NULL; mutex_lock(&(rmi4_data->rmi4_io_ctrl_mutex)); if(!gpwDMABuf_va){ gpwDMABuf_va = (u8 *)dma_alloc_coherent(NULL, 1024, &gpwDMABuf_pa, GFP_KERNEL); if(!gpwDMABuf_va){ printk("[Error] Allocate DMA I2C Buffer failed!\n"); } } buf_va = gpwDMABuf_va; struct i2c_msg msg[] = { { .addr = rmi4_data->i2c_client->addr, .flags = 0, .len = length + 1, .buf = gpwDMABuf_pa, .ext_flag=(rmi4_data->i2c_client->ext_flag|I2C_ENEXT_FLAG|I2C_DMA_FLAG), .timing = 400, } }; retval = synaptics_rmi4_set_page(rmi4_data, addr); if (retval != PAGE_SELECT_LEN) goto exit; buf_va[0] = addr & MASK_8BIT; memcpy(&buf_va[1],&data[0] , length); for (retry = 0; retry < SYN_I2C_RETRY_TIMES; retry++) { if (i2c_transfer(rmi4_data->i2c_client->adapter, msg, 1) == 1) { retval = length; break; } dev_err(&rmi4_data->i2c_client->dev, "%s: I2C retry %d\n", __func__, retry + 1); msleep(20); } if (retry == SYN_I2C_RETRY_TIMES) { dev_err(&rmi4_data->i2c_client->dev, "%s: I2C write over retry limit\n", __func__); retval = -EIO; } exit: /* if(gpwDMABuf_va){ */ /* dma_free_coherent(NULL, 1024, gpwDMABuf_va, gpwDMABuf_pa); */ /* gpwDMABuf_va = NULL; */ /* gpwDMABuf_pa = NULL; */ /* } */ mutex_unlock(&(rmi4_data->rmi4_io_ctrl_mutex)); return retval; } /** * synaptics_rmi4_f11_abs_report() * * Called by synaptics_rmi4_report_touch() when valid Function $11 * finger data has been detected. * * This function reads the Function $11 data registers, determines the * status of each finger supported by the Function, processes any * necessary coordinate manipulation, reports the finger data to * the input subsystem, and returns the number of fingers detected. */ static int synaptics_rmi4_f11_abs_report(struct synaptics_rmi4_data *rmi4_data, struct synaptics_rmi4_fn *fhandler) { int retval; unsigned char touch_count = 0; /* number of touch points */ unsigned char reg_index; unsigned char finger; unsigned char fingers_supported; unsigned char num_of_finger_status_regs; unsigned char finger_shift; unsigned char finger_status; unsigned char data_reg_blk_size; unsigned char finger_status_reg[3]; unsigned char data[F11_STD_DATA_LEN]; unsigned short data_addr; unsigned short data_offset; int x; int y; int wx; int wy; int temp; /* * The number of finger status registers is determined by the * maximum number of fingers supported - 2 bits per finger. So * the number of finger status registers to read is: * register_count = ceil(max_num_of_fingers / 4) */ fingers_supported = fhandler->num_of_data_points; num_of_finger_status_regs = (fingers_supported + 3) / 4; data_addr = fhandler->full_addr.data_base; data_reg_blk_size = fhandler->size_of_data_register_block; retval = synaptics_rmi4_i2c_read(rmi4_data, data_addr, finger_status_reg, num_of_finger_status_regs); if (retval < 0) return 0; for (finger = 0; finger < fingers_supported; finger++) { reg_index = finger / 4; finger_shift = (finger % 4) * 2; finger_status = (finger_status_reg[reg_index] >> finger_shift) & MASK_2BIT; /* * Each 2-bit finger status field represents the following: * 00 = finger not present * 01 = finger present and data accurate * 10 = finger present but data may be inaccurate * 11 = reserved */ #ifdef TYPE_B_PROTOCOL input_mt_slot(rmi4_data->input_dev, finger); input_mt_report_slot_state(rmi4_data->input_dev, MT_TOOL_FINGER, finger_status); #endif if (finger_status) { data_offset = data_addr + num_of_finger_status_regs + (finger * data_reg_blk_size); retval = synaptics_rmi4_i2c_read(rmi4_data, data_offset, data, data_reg_blk_size); if (retval < 0) return 0; x = (data[0] << 4) | (data[2] & MASK_4BIT); y = (data[1] << 4) | ((data[2] >> 4) & MASK_4BIT); wx = (data[3] & MASK_4BIT); wy = (data[3] >> 4) & MASK_4BIT; input_report_key(rmi4_data->input_dev, BTN_TOUCH, 1); input_report_key(rmi4_data->input_dev, BTN_TOOL_FINGER, 1); input_report_abs(rmi4_data->input_dev, ABS_MT_POSITION_X, x); input_report_abs(rmi4_data->input_dev, ABS_MT_POSITION_Y, y); #ifdef REPORT_2D_W input_report_abs(rmi4_data->input_dev, ABS_MT_TOUCH_MAJOR, max(wx, wy)); input_report_abs(rmi4_data->input_dev, ABS_MT_TOUCH_MINOR, min(wx, wy)); #endif #ifndef TYPE_B_PROTOCOL input_mt_sync(rmi4_data->input_dev); #endif #ifdef TPD_HAVE_BUTTON if (NORMAL_BOOT != boot_mode) { tpd_button(x, y, 1); } #endif dev_dbg(&rmi4_data->i2c_client->dev, "%s: SynFinger %d: status = 0x%02x [%4d %4d] [%4d %4d]\n", __func__, finger, finger_status, x, y, wx, wy); touch_count++; } } if (touch_count == 0) { input_report_key(rmi4_data->input_dev, BTN_TOUCH, 0); input_report_key(rmi4_data->input_dev, BTN_TOOL_FINGER, 0); #ifndef TYPE_B_PROTOCOL input_mt_sync(rmi4_data->input_dev); #endif #ifdef TPD_HAVE_BUTTON if (NORMAL_BOOT != boot_mode) { tpd_button(x, y, 0); } #endif } input_sync(rmi4_data->input_dev); return touch_count; } /** * synaptics_rmi4_f12_abs_report() * * Called by synaptics_rmi4_report_touch() when valid Function $12 * finger data has been detected. * * This function reads the Function $12 data registers, determines the * status of each finger supported by the Function, processes any * necessary coordinate manipulation, reports the finger data to * the input subsystem, and returns the number of fingers detected. */ static int synaptics_rmi4_f12_abs_report(struct synaptics_rmi4_data *rmi4_data, struct synaptics_rmi4_fn *fhandler) { int retval; unsigned char touch_count = 0; /* number of touch points */ unsigned char finger; unsigned char fingers_to_process; unsigned char finger_status; unsigned char size_of_2d_data; unsigned short data_addr; int x; int y; int wx; int wy; int temp; struct synaptics_rmi4_f12_extra_data *extra_data; struct synaptics_rmi4_f12_finger_data *data; struct synaptics_rmi4_f12_finger_data *finger_data; #ifdef F12_DATA_15_WORKAROUND static unsigned char fingers_already_present; #endif fingers_to_process = fhandler->num_of_data_points; data_addr = fhandler->full_addr.data_base; extra_data = (struct synaptics_rmi4_f12_extra_data *)fhandler->extra; size_of_2d_data = sizeof(struct synaptics_rmi4_f12_finger_data); /* Determine the total number of fingers to process */ if (extra_data->data15_size) { retval = synaptics_rmi4_i2c_read(rmi4_data, data_addr + extra_data->data15_offset, extra_data->data15_data, extra_data->data15_size); if (retval < 0) return 0; /* Start checking from the highest bit */ temp = extra_data->data15_size - 1; /* Highest byte */ finger = (fingers_to_process - 1) % 8; /* Highest bit */ do { if (extra_data->data15_data[temp] & (1 << finger)) break; if (finger) { finger--; } else { temp--; /* Move to the next lower byte */ finger = 7; } fingers_to_process--; } while (fingers_to_process); dev_dbg(&rmi4_data->i2c_client->dev, "%s: Number of fingers to process = %d\n", __func__, fingers_to_process); } #ifdef F12_DATA_15_WORKAROUND fingers_to_process = max(fingers_to_process, fingers_already_present); #endif if (!fingers_to_process) { synaptics_rmi4_free_fingers(rmi4_data); return 0; } retval = synaptics_rmi4_i2c_read(rmi4_data, data_addr + extra_data->data1_offset, (unsigned char *)fhandler->data, fingers_to_process * size_of_2d_data); if (retval < 0) return 0; data = (struct synaptics_rmi4_f12_finger_data *)fhandler->data; for (finger = 0; finger < fingers_to_process; finger++) { finger_data = data + finger; finger_status = finger_data->object_type_and_status & MASK_1BIT; #ifdef TYPE_B_PROTOCOL input_mt_slot(rmi4_data->input_dev, finger); input_mt_report_slot_state(rmi4_data->input_dev, MT_TOOL_FINGER, finger_status); #endif if (finger_status) { #ifdef F12_DATA_15_WORKAROUND fingers_already_present = finger + 1; #endif x = (finger_data->x_msb << 8) | (finger_data->x_lsb); y = (finger_data->y_msb << 8) | (finger_data->y_lsb); #ifdef REPORT_2D_W wx = finger_data->wx; wy = finger_data->wy; #endif input_report_key(rmi4_data->input_dev, BTN_TOUCH, 1); input_report_key(rmi4_data->input_dev, BTN_TOOL_FINGER, 1); input_report_abs(rmi4_data->input_dev, ABS_MT_POSITION_X, x); input_report_abs(rmi4_data->input_dev, ABS_MT_POSITION_Y, y); #ifdef REPORT_2D_W input_report_abs(rmi4_data->input_dev, ABS_MT_TOUCH_MAJOR, max(wx, wy)); input_report_abs(rmi4_data->input_dev, ABS_MT_TOUCH_MINOR, min(wx, wy)); #endif #ifndef TYPE_B_PROTOCOL input_mt_sync(rmi4_data->input_dev); #endif dev_dbg(&rmi4_data->i2c_client->dev, "%s: SynFinger %d: status = 0x%02x [%4d %4d] [%4d %4d]\n", __func__, finger, finger_status, x, y, wx, wy); touch_count++; } } if (touch_count == 0) { input_report_key(rmi4_data->input_dev, BTN_TOUCH, 0); input_report_key(rmi4_data->input_dev, BTN_TOOL_FINGER, 0); #ifndef TYPE_B_PROTOCOL input_mt_sync(rmi4_data->input_dev); #endif } input_sync(rmi4_data->input_dev); return touch_count; } static void synaptics_rmi4_f1a_report(struct synaptics_rmi4_data *rmi4_data, struct synaptics_rmi4_fn *fhandler) { int retval; unsigned char touch_count = 0; unsigned char button; unsigned char index; unsigned char shift; unsigned char status; unsigned char *data; unsigned short data_addr = fhandler->full_addr.data_base; struct synaptics_rmi4_f1a_handle *f1a = fhandler->data; static unsigned char do_once = 1; static bool current_status[MAX_NUMBER_OF_BUTTONS]; #ifdef NO_0D_WHILE_2D static bool before_2d_status[MAX_NUMBER_OF_BUTTONS]; static bool while_2d_status[MAX_NUMBER_OF_BUTTONS]; #endif if (do_once) { memset(current_status, 0, sizeof(current_status)); #ifdef NO_0D_WHILE_2D memset(before_2d_status, 0, sizeof(before_2d_status)); memset(while_2d_status, 0, sizeof(while_2d_status)); #endif do_once = 0; } retval = synaptics_rmi4_i2c_read(rmi4_data, data_addr, f1a->button_data_buffer, f1a->button_bitmask_size); if (retval < 0) { dev_err(&rmi4_data->i2c_client->dev, "%s: Failed to read button data registers\n", __func__); return; } data = f1a->button_data_buffer; for (button = 0; button < f1a->valid_button_count; button++) { index = button / 8; shift = button % 8; status = ((data[index] >> shift) & MASK_1BIT); if (current_status[button] == status) continue; else current_status[button] = status; dev_dbg(&rmi4_data->i2c_client->dev, "%s: Button %d (code %d) ->%d\n", __func__, button, f1a->button_map[button], status); #ifdef NO_0D_WHILE_2D if (rmi4_data->fingers_on_2d == false) { if (status == 1) { before_2d_status[button] = 1; } else { if (while_2d_status[button] == 1) { while_2d_status[button] = 0; continue; } else { before_2d_status[button] = 0; } } touch_count++; input_report_key(rmi4_data->input_dev, f1a->button_map[button], status); } else { if (before_2d_status[button] == 1) { before_2d_status[button] = 0; touch_count++; input_report_key(rmi4_data->input_dev, f1a->button_map[button], status); } else { if (status == 1) while_2d_status[button] = 1; else while_2d_status[button] = 0; } } #else touch_count++; input_report_key(rmi4_data->input_dev, f1a->button_map[button], status); #endif } if (touch_count) input_sync(rmi4_data->input_dev); return; } /** * synaptics_rmi4_report_touch() * * Called by synaptics_rmi4_sensor_report(). * * This function calls the appropriate finger data reporting function * based on the function handler it receives and returns the number of * fingers detected. */ static void synaptics_rmi4_report_touch(struct synaptics_rmi4_data *rmi4_data, struct synaptics_rmi4_fn *fhandler) { unsigned char touch_count_2d; dev_dbg(&rmi4_data->i2c_client->dev, "%s: Function %02x reporting\n", __func__, fhandler->fn_number); switch (fhandler->fn_number) { case SYNAPTICS_RMI4_F11: touch_count_2d = synaptics_rmi4_f11_abs_report(rmi4_data, fhandler); if (touch_count_2d) rmi4_data->fingers_on_2d = true; else rmi4_data->fingers_on_2d = false; break; case SYNAPTICS_RMI4_F12: touch_count_2d = synaptics_rmi4_f12_abs_report(rmi4_data, fhandler); if (touch_count_2d) rmi4_data->fingers_on_2d = true; else rmi4_data->fingers_on_2d = false; break; case SYNAPTICS_RMI4_F1A: synaptics_rmi4_f1a_report(rmi4_data, fhandler); break; default: break; } return; } /** * synaptics_rmi4_sensor_report() * * Called by synaptics_rmi4_irq(). * * This function determines the interrupt source(s) from the sensor * and calls synaptics_rmi4_report_touch() with the appropriate * function handler for each function with valid data inputs. */ static void synaptics_rmi4_sensor_report(struct synaptics_rmi4_data *rmi4_data) { int retval; unsigned char data[MAX_INTR_REGISTERS + 1]; unsigned char *intr = &data[1]; struct synaptics_rmi4_f01_device_status status; struct synaptics_rmi4_fn *fhandler; struct synaptics_rmi4_exp_fhandler *exp_fhandler; struct synaptics_rmi4_device_info *rmi; rmi = &(rmi4_data->rmi4_mod_info); /* * Get interrupt status information from F01 Data1 register to * determine the source(s) that are flagging the interrupt. */ retval = synaptics_rmi4_i2c_read(rmi4_data, rmi4_data->f01_data_base_addr, data, rmi4_data->num_of_intr_regs + 1); if (retval < 0) { dev_err(&rmi4_data->i2c_client->dev, "%s: Failed to read interrupt status\n", __func__); return; } status.data[0] = data[0]; if (status.unconfigured && !status.flash_prog) { pr_notice("%s: spontaneous reset detected\n", __func__); retval = synaptics_rmi4_reinit_device(rmi4_data); if (retval < 0) { dev_err(&rmi4_data->i2c_client->dev, "%s: Failed to reinit device\n", __func__); } return; } /* * Traverse the function handler list and service the source(s) * of the interrupt accordingly. */ if (!list_empty(&rmi->support_fn_list)) { list_for_each_entry(fhandler, &rmi->support_fn_list, link) { if (fhandler->num_of_data_sources) { if (fhandler->intr_mask & intr[fhandler->intr_reg_num]) { synaptics_rmi4_report_touch(rmi4_data, fhandler); } } } } mutex_lock(&exp_data.mutex); if (!list_empty(&exp_data.list)) { list_for_each_entry(exp_fhandler, &exp_data.list, link) { if (!exp_fhandler->insert && !exp_fhandler->remove && (exp_fhandler->exp_fn->attn != NULL)) exp_fhandler->exp_fn->attn(rmi4_data, intr[0]); } } mutex_unlock(&exp_data.mutex); return; } /** * synaptics_rmi4_irq() * * Called by the kernel when an interrupt occurs (when the sensor * asserts the attention irq). * * This function is the ISR thread and handles the acquisition * and the reporting of finger data when the presence of fingers * is detected. */ static void tpd_eint_handler(void) { TPD_DEBUG_PRINT_INT; tpd_flag=1; wake_up_interruptible(&waiter); } static int touch_event_handler(void *data) { struct synaptics_rmi4_data *rmi4_data = data; struct sched_param param = { .sched_priority = RTPM_PRIO_TPD }; sched_setscheduler(current, SCHED_RR, ¶m); do{ set_current_state(TASK_INTERRUPTIBLE); while (tpd_halt) { tpd_flag = 0; msleep(20); } wait_event_interruptible(waiter, tpd_flag != 0); tpd_flag = 0; TPD_DEBUG_SET_TIME; set_current_state(TASK_RUNNING); if (!rmi4_data->touch_stopped) synaptics_rmi4_sensor_report(rmi4_data); mt_eint_unmask(CUST_EINT_TOUCH_PANEL_NUM); }while(1); return 0; } /** * synaptics_rmi4_irq_enable() * * Called by synaptics_rmi4_probe() and the power management functions * in this driver and also exported to other expansion Function modules * such as rmi_dev. * * This function handles the enabling and disabling of the attention * irq including the setting up of the ISR thread. */ static int synaptics_rmi4_irq_enable(struct synaptics_rmi4_data *rmi4_data, bool enable) { int retval = 0; unsigned char intr_status[MAX_INTR_REGISTERS]; if (enable) { /* Clear interrupts first */ retval = synaptics_rmi4_i2c_read(rmi4_data, rmi4_data->f01_data_base_addr + 1, intr_status, rmi4_data->num_of_intr_regs); if (retval < 0) return retval; // set up irq if (!rmi4_data->irq_enabled) { mt_eint_set_sens(CUST_EINT_TOUCH_PANEL_NUM, CUST_EINT_TOUCH_PANEL_SENSITIVE); mt_eint_set_hw_debounce(CUST_EINT_TOUCH_PANEL_NUM, CUST_EINT_TOUCH_PANEL_DEBOUNCE_CN); //mt_eint_registration(CUST_EINT_TOUCH_PANEL_NUM, CUST_EINT_TOUCH_PANEL_DEBOUNCE_EN, CUST_EINT_POLARITY_LOW, , 1); mt_eint_registration(CUST_EINT_TOUCH_PANEL_NUM, EINTF_TRIGGER_FALLING, tpd_eint_handler, 1); } mt_eint_unmask(CUST_EINT_TOUCH_PANEL_NUM); rmi4_data->irq_enabled = true; } else { if (rmi4_data->irq_enabled) { mt_eint_mask(CUST_EINT_TOUCH_PANEL_NUM); rmi4_data->irq_enabled = false; } } return retval; } static void synaptics_rmi4_set_intr_mask(struct synaptics_rmi4_fn *fhandler, struct synaptics_rmi4_fn_desc *fd, unsigned int intr_count) { unsigned char ii; unsigned char intr_offset; fhandler->intr_reg_num = (intr_count + 7) / 8; if (fhandler->intr_reg_num != 0) fhandler->intr_reg_num -= 1; /* Set an enable bit for each data source */ intr_offset = intr_count % 8; fhandler->intr_mask = 0; for (ii = intr_offset; ii < ((fd->intr_src_count & MASK_3BIT) + intr_offset); ii++) fhandler->intr_mask |= 1 << ii; return; } static int synaptics_rmi4_f01_init(struct synaptics_rmi4_data *rmi4_data, struct synaptics_rmi4_fn *fhandler, struct synaptics_rmi4_fn_desc *fd, unsigned int intr_count) { fhandler->fn_number = fd->fn_number; fhandler->num_of_data_sources = fd->intr_src_count; fhandler->data = NULL; fhandler->extra = NULL; synaptics_rmi4_set_intr_mask(fhandler, fd, intr_count); rmi4_data->f01_query_base_addr = fd->query_base_addr; rmi4_data->f01_ctrl_base_addr = fd->ctrl_base_addr; rmi4_data->f01_data_base_addr = fd->data_base_addr; rmi4_data->f01_cmd_base_addr = fd->cmd_base_addr; return 0; } /** * synaptics_rmi4_f11_init() * * Called by synaptics_rmi4_query_device(). * * This funtion parses information from the Function 11 registers * and determines the number of fingers supported, x and y data ranges, * offset to the associated interrupt status register, interrupt bit * mask, and gathers finger data acquisition capabilities from the query * registers. */ static int synaptics_rmi4_f11_init(struct synaptics_rmi4_data *rmi4_data, struct synaptics_rmi4_fn *fhandler, struct synaptics_rmi4_fn_desc *fd, unsigned int intr_count) { int retval; unsigned char abs_data_size; unsigned char abs_data_blk_size; unsigned char query[F11_STD_QUERY_LEN]; unsigned char control[F11_STD_CTRL_LEN]; fhandler->fn_number = fd->fn_number; fhandler->num_of_data_sources = fd->intr_src_count; retval = synaptics_rmi4_i2c_read(rmi4_data, fhandler->full_addr.query_base, query, sizeof(query)); if (retval < 0) return retval; /* Maximum number of fingers supported */ if ((query[1] & MASK_3BIT) <= 4) fhandler->num_of_data_points = (query[1] & MASK_3BIT) + 1; else if ((query[1] & MASK_3BIT) == 5) fhandler->num_of_data_points = 10; rmi4_data->num_of_fingers = fhandler->num_of_data_points; retval = synaptics_rmi4_i2c_read(rmi4_data, fhandler->full_addr.ctrl_base, control, sizeof(control)); if (retval < 0) return retval; /* Maximum x and y */ rmi4_data->sensor_max_x = ((control[6] & MASK_8BIT) << 0) | ((control[7] & MASK_4BIT) << 8); rmi4_data->sensor_max_y = ((control[8] & MASK_8BIT) << 0) | ((control[9] & MASK_4BIT) << 8); #ifdef TPD_HAVE_BUTTON rmi4_data->sensor_max_y = rmi4_data->sensor_max_y * TPD_DISPLAY_HEIGH_RATIO / TPD_TOUCH_HEIGH_RATIO; #endif dev_dbg(&rmi4_data->i2c_client->dev, "%s: Function %02x max x = %d max y = %d\n", __func__, fhandler->fn_number, rmi4_data->sensor_max_x, rmi4_data->sensor_max_y); rmi4_data->max_touch_width = MAX_F11_TOUCH_WIDTH; synaptics_rmi4_set_intr_mask(fhandler, fd, intr_count); abs_data_size = query[5] & MASK_2BIT; abs_data_blk_size = 3 + (2 * (abs_data_size == 0 ? 1 : 0)); fhandler->size_of_data_register_block = abs_data_blk_size; fhandler->data = NULL; fhandler->extra = NULL; return retval; } static int synaptics_rmi4_f12_set_enables(struct synaptics_rmi4_data *rmi4_data, unsigned short ctrl28) { int retval; static unsigned short ctrl_28_address; if (ctrl28) ctrl_28_address = ctrl28; retval = synaptics_rmi4_i2c_write(rmi4_data, ctrl_28_address, &rmi4_data->report_enable, sizeof(rmi4_data->report_enable)); if (retval < 0) return retval; return retval; } /** * synaptics_rmi4_f12_init() * * Called by synaptics_rmi4_query_device(). * * This funtion parses information from the Function 12 registers and * determines the number of fingers supported, offset to the data1 * register, x and y data ranges, offset to the associated interrupt * status register, interrupt bit mask, and allocates memory resources * for finger data acquisition. */ static int synaptics_rmi4_f12_init(struct synaptics_rmi4_data *rmi4_data, struct synaptics_rmi4_fn *fhandler, struct synaptics_rmi4_fn_desc *fd, unsigned int intr_count) { int retval; unsigned char size_of_2d_data; unsigned char size_of_query8; unsigned char ctrl_8_offset; unsigned char ctrl_23_offset; unsigned char ctrl_28_offset; unsigned char num_of_fingers; struct synaptics_rmi4_f12_extra_data *extra_data; struct synaptics_rmi4_f12_query_5 query_5; struct synaptics_rmi4_f12_query_8 query_8; struct synaptics_rmi4_f12_ctrl_8 ctrl_8; struct synaptics_rmi4_f12_ctrl_23 ctrl_23; fhandler->fn_number = fd->fn_number; fhandler->num_of_data_sources = fd->intr_src_count; fhandler->extra = kmalloc(sizeof(*extra_data), GFP_KERNEL); extra_data = (struct synaptics_rmi4_f12_extra_data *)fhandler->extra; size_of_2d_data = sizeof(struct synaptics_rmi4_f12_finger_data); retval = synaptics_rmi4_i2c_read(rmi4_data, fhandler->full_addr.query_base + 5, query_5.data, sizeof(query_5.data)); if (retval < 0) return retval; ctrl_8_offset = query_5.ctrl0_is_present + query_5.ctrl1_is_present + query_5.ctrl2_is_present + query_5.ctrl3_is_present + query_5.ctrl4_is_present + query_5.ctrl5_is_present + query_5.ctrl6_is_present + query_5.ctrl7_is_present; ctrl_23_offset = ctrl_8_offset + query_5.ctrl8_is_present + query_5.ctrl9_is_present + query_5.ctrl10_is_present + query_5.ctrl11_is_present + query_5.ctrl12_is_present + query_5.ctrl13_is_present + query_5.ctrl14_is_present + query_5.ctrl15_is_present + query_5.ctrl16_is_present + query_5.ctrl17_is_present + query_5.ctrl18_is_present + query_5.ctrl19_is_present + query_5.ctrl20_is_present + query_5.ctrl21_is_present + query_5.ctrl22_is_present; ctrl_28_offset = ctrl_23_offset + query_5.ctrl23_is_present + query_5.ctrl24_is_present + query_5.ctrl25_is_present + query_5.ctrl26_is_present + query_5.ctrl27_is_present; retval = synaptics_rmi4_i2c_read(rmi4_data, fhandler->full_addr.ctrl_base + ctrl_23_offset, ctrl_23.data, sizeof(ctrl_23.data)); if (retval < 0) return retval; /* Maximum number of fingers supported */ fhandler->num_of_data_points = min(ctrl_23.max_reported_objects, (unsigned char)F12_FINGERS_TO_SUPPORT); num_of_fingers = fhandler->num_of_data_points; rmi4_data->num_of_fingers = num_of_fingers; retval = synaptics_rmi4_i2c_read(rmi4_data, fhandler->full_addr.query_base + 7, &size_of_query8, sizeof(size_of_query8)); if (retval < 0) return retval; retval = synaptics_rmi4_i2c_read(rmi4_data, fhandler->full_addr.query_base + 8, query_8.data, size_of_query8); if (retval < 0) return retval; /* Determine the presence of the Data0 register */ extra_data->data1_offset = query_8.data0_is_present; if ((size_of_query8 >= 3) && (query_8.data15_is_present)) { extra_data->data15_offset = query_8.data0_is_present + query_8.data1_is_present + query_8.data2_is_present + query_8.data3_is_present + query_8.data4_is_present + query_8.data5_is_present + query_8.data6_is_present + query_8.data7_is_present + query_8.data8_is_present + query_8.data9_is_present + query_8.data10_is_present + query_8.data11_is_present + query_8.data12_is_present + query_8.data13_is_present + query_8.data14_is_present; extra_data->data15_size = (num_of_fingers + 7) / 8; } else { extra_data->data15_size = 0; } rmi4_data->report_enable = RPT_DEFAULT; #ifdef REPORT_2D_Z rmi4_data->report_enable |= RPT_Z; #endif #ifdef REPORT_2D_W rmi4_data->report_enable |= (RPT_WX | RPT_WY); #endif retval = synaptics_rmi4_f12_set_enables(rmi4_data, fhandler->full_addr.ctrl_base + ctrl_28_offset); if (retval < 0) return retval; retval = synaptics_rmi4_i2c_read(rmi4_data, fhandler->full_addr.ctrl_base + ctrl_8_offset, ctrl_8.data, sizeof(ctrl_8.data)); if (retval < 0) return retval; /* Maximum x and y */ rmi4_data->sensor_max_x = ((unsigned short)ctrl_8.max_x_coord_lsb << 0) | ((unsigned short)ctrl_8.max_x_coord_msb << 8); rmi4_data->sensor_max_y = ((unsigned short)ctrl_8.max_y_coord_lsb << 0) | ((unsigned short)ctrl_8.max_y_coord_msb << 8); #ifdef TPD_HAVE_BUTTON rmi4_data->sensor_max_y = rmi4_data->sensor_max_y * TPD_DISPLAY_HEIGH_RATIO / TPD_TOUCH_HEIGH_RATIO; #endif dev_dbg(&rmi4_data->i2c_client->dev, "%s: Function %02x max x = %d max y = %d\n", __func__, fhandler->fn_number, rmi4_data->sensor_max_x, rmi4_data->sensor_max_y); rmi4_data->num_of_rx = ctrl_8.num_of_rx; rmi4_data->num_of_tx = ctrl_8.num_of_tx; rmi4_data->max_touch_width = max(rmi4_data->num_of_rx, rmi4_data->num_of_tx); synaptics_rmi4_set_intr_mask(fhandler, fd, intr_count); /* Allocate memory for finger data storage space */ fhandler->data_size = num_of_fingers * size_of_2d_data; fhandler->data = kmalloc(fhandler->data_size, GFP_KERNEL); return retval; } static int synaptics_rmi4_f1a_alloc_mem(struct synaptics_rmi4_data *rmi4_data, struct synaptics_rmi4_fn *fhandler) { int retval; struct synaptics_rmi4_f1a_handle *f1a; f1a = kzalloc(sizeof(*f1a), GFP_KERNEL); if (!f1a) { dev_err(&rmi4_data->i2c_client->dev, "%s: Failed to alloc mem for function handle\n", __func__); return -ENOMEM; } fhandler->data = (void *)f1a; fhandler->extra = NULL; retval = synaptics_rmi4_i2c_read(rmi4_data, fhandler->full_addr.query_base, f1a->button_query.data, sizeof(f1a->button_query.data)); if (retval < 0) { dev_err(&rmi4_data->i2c_client->dev, "%s: Failed to read query registers\n", __func__); return retval; } f1a->max_count = f1a->button_query.max_button_count + 1; f1a->button_control.txrx_map = kzalloc(f1a->max_count * 2, GFP_KERNEL); if (!f1a->button_control.txrx_map) { dev_err(&rmi4_data->i2c_client->dev, "%s: Failed to alloc mem for tx rx mapping\n", __func__); return -ENOMEM; } f1a->button_bitmask_size = (f1a->max_count + 7) / 8; f1a->button_data_buffer = kcalloc(f1a->button_bitmask_size, sizeof(*(f1a->button_data_buffer)), GFP_KERNEL); if (!f1a->button_data_buffer) { dev_err(&rmi4_data->i2c_client->dev, "%s: Failed to alloc mem for data buffer\n", __func__); return -ENOMEM; } f1a->button_map = kcalloc(f1a->max_count, sizeof(*(f1a->button_map)), GFP_KERNEL); if (!f1a->button_map) { dev_err(&rmi4_data->i2c_client->dev, "%s: Failed to alloc mem for button map\n", __func__); return -ENOMEM; } return 0; } static int synaptics_rmi4_f1a_button_map(struct synaptics_rmi4_data *rmi4_data, struct synaptics_rmi4_fn *fhandler) { int retval; unsigned char ii; unsigned char mapping_offset = 0; struct synaptics_rmi4_f1a_handle *f1a = fhandler->data; mapping_offset = f1a->button_query.has_general_control + f1a->button_query.has_interrupt_enable + f1a->button_query.has_multibutton_select; if (f1a->button_query.has_tx_rx_map) { retval = synaptics_rmi4_i2c_read(rmi4_data, fhandler->full_addr.ctrl_base + mapping_offset, f1a->button_control.txrx_map, sizeof(f1a->button_control.txrx_map)); if (retval < 0) { dev_err(&rmi4_data->i2c_client->dev, "%s: Failed to read tx rx mapping\n", __func__); return retval; } rmi4_data->button_txrx_mapping = f1a->button_control.txrx_map; } return 0; } static void synaptics_rmi4_f1a_kfree(struct synaptics_rmi4_fn *fhandler) { struct synaptics_rmi4_f1a_handle *f1a = fhandler->data; if (f1a) { kfree(f1a->button_control.txrx_map); kfree(f1a->button_data_buffer); kfree(f1a->button_map); kfree(f1a); fhandler->data = NULL; } return; } static int synaptics_rmi4_f1a_init(struct synaptics_rmi4_data *rmi4_data, struct synaptics_rmi4_fn *fhandler, struct synaptics_rmi4_fn_desc *fd, unsigned int intr_count) { int retval; fhandler->fn_number = fd->fn_number; fhandler->num_of_data_sources = fd->intr_src_count; synaptics_rmi4_set_intr_mask(fhandler, fd, intr_count); retval = synaptics_rmi4_f1a_alloc_mem(rmi4_data, fhandler); if (retval < 0) goto error_exit; retval = synaptics_rmi4_f1a_button_map(rmi4_data, fhandler); if (retval < 0) goto error_exit; rmi4_data->button_0d_enabled = 0; return 0; error_exit: synaptics_rmi4_f1a_kfree(fhandler); return retval; } static void synaptics_rmi4_empty_fn_list(struct synaptics_rmi4_data *rmi4_data) { struct synaptics_rmi4_fn *fhandler; struct synaptics_rmi4_fn *fhandler_temp; struct synaptics_rmi4_device_info *rmi; rmi = &(rmi4_data->rmi4_mod_info); if (!list_empty(&rmi->support_fn_list)) { list_for_each_entry_safe(fhandler, fhandler_temp, &rmi->support_fn_list, link) { if (fhandler->fn_number == SYNAPTICS_RMI4_F1A) { synaptics_rmi4_f1a_kfree(fhandler); } else { kfree(fhandler->extra); kfree(fhandler->data); } list_del(&fhandler->link); kfree(fhandler); } } INIT_LIST_HEAD(&rmi->support_fn_list); return; } static int synaptics_rmi4_check_status(struct synaptics_rmi4_data *rmi4_data, bool *was_in_bl_mode) { int retval; int timeout = CHECK_STATUS_TIMEOUT_MS; unsigned char command = 0x01; unsigned char intr_status; struct synaptics_rmi4_f01_device_status status; /* Do a device reset first */ retval = synaptics_rmi4_i2c_write(rmi4_data, rmi4_data->f01_cmd_base_addr, &command, sizeof(command)); if (retval < 0) return retval; msleep(DELAY_S7300_RESET_READY); retval = synaptics_rmi4_i2c_read(rmi4_data, rmi4_data->f01_data_base_addr, status.data, sizeof(status.data)); if (retval < 0) return retval; while (status.status_code == STATUS_CRC_IN_PROGRESS) { if (timeout > 0) msleep(20); else return -1; retval = synaptics_rmi4_i2c_read(rmi4_data, rmi4_data->f01_data_base_addr, status.data, sizeof(status.data)); if (retval < 0) return retval; timeout -= 20; } if (timeout != CHECK_STATUS_TIMEOUT_MS) *was_in_bl_mode = true; if (status.flash_prog == 1) { rmi4_data->flash_prog_mode = true; pr_notice("%s: In flash prog mode, status = 0x%02x\n", __func__, status.status_code); } else { rmi4_data->flash_prog_mode = false; } retval = synaptics_rmi4_i2c_read(rmi4_data, rmi4_data->f01_data_base_addr + 1, &intr_status, sizeof(intr_status)); if (retval < 0) { dev_err(&rmi4_data->i2c_client->dev, "%s: Failed to read interrupt status\n", __func__); return retval; } return 0; } static void synaptics_rmi4_set_configured(struct synaptics_rmi4_data *rmi4_data) { int retval; unsigned char device_ctrl; retval = synaptics_rmi4_i2c_read(rmi4_data, rmi4_data->f01_ctrl_base_addr, &device_ctrl, sizeof(device_ctrl)); if (retval < 0) { dev_err(&(rmi4_data->input_dev->dev), "%s: Failed to set configured\n", __func__); return; } rmi4_data->no_sleep_setting = device_ctrl & NO_SLEEP_ON; device_ctrl |= CONFIGURED; retval = synaptics_rmi4_i2c_write(rmi4_data, rmi4_data->f01_ctrl_base_addr, &device_ctrl, sizeof(device_ctrl)); if (retval < 0) { dev_err(&(rmi4_data->input_dev->dev), "%s: Failed to set configured\n", __func__); } return; } static int synaptics_rmi4_alloc_fh(struct synaptics_rmi4_fn **fhandler, struct synaptics_rmi4_fn_desc *rmi_fd, int page_number) { *fhandler = kmalloc(sizeof(**fhandler), GFP_KERNEL); if (!(*fhandler)) return -ENOMEM; (*fhandler)->full_addr.data_base = (rmi_fd->data_base_addr | (page_number << 8)); (*fhandler)->full_addr.ctrl_base = (rmi_fd->ctrl_base_addr | (page_number << 8)); (*fhandler)->full_addr.cmd_base = (rmi_fd->cmd_base_addr | (page_number << 8)); (*fhandler)->full_addr.query_base = (rmi_fd->query_base_addr | (page_number << 8)); return 0; } /** * synaptics_rmi4_query_device() * * Called by synaptics_rmi4_probe(). * * This funtion scans the page description table, records the offsets * to the register types of Function $01, sets up the function handlers * for Function $11 and Function $12, determines the number of interrupt * sources from the sensor, adds valid Functions with data inputs to the * Function linked list, parses information from the query registers of * Function $01, and enables the interrupt sources from the valid Functions * with data inputs. */ static int synaptics_rmi4_query_device(struct synaptics_rmi4_data *rmi4_data) { int retval; unsigned char ii; unsigned char page_number; unsigned char intr_count; unsigned char f01_query[F01_STD_QUERY_LEN]; unsigned short pdt_entry_addr; unsigned short intr_addr; bool was_in_bl_mode; struct synaptics_rmi4_fn_desc rmi_fd; struct synaptics_rmi4_fn *fhandler; struct synaptics_rmi4_device_info *rmi; rmi = &(rmi4_data->rmi4_mod_info); rescan_pdt: was_in_bl_mode = false; intr_count = 0; INIT_LIST_HEAD(&rmi->support_fn_list); /* Scan the page description tables of the pages to service */ for (page_number = 0; page_number < PAGES_TO_SERVICE; page_number++) { for (pdt_entry_addr = PDT_START; pdt_entry_addr > PDT_END; pdt_entry_addr -= PDT_ENTRY_SIZE) { pdt_entry_addr |= (page_number << 8); retval = synaptics_rmi4_i2c_read(rmi4_data, pdt_entry_addr, (unsigned char *)&rmi_fd, sizeof(rmi_fd)); if (retval < 0) return retval; fhandler = NULL; if (rmi_fd.fn_number == 0) { dev_dbg(&rmi4_data->i2c_client->dev, "%s: Reached end of PDT\n", __func__); break; } dev_dbg(&rmi4_data->i2c_client->dev, "%s: F%02x found (page %d)\n", __func__, rmi_fd.fn_number, page_number); switch (rmi_fd.fn_number) { case SYNAPTICS_RMI4_F01: if (rmi_fd.intr_src_count == 0) break; retval = synaptics_rmi4_alloc_fh(&fhandler, &rmi_fd, page_number); if (retval < 0) { dev_err(&rmi4_data->i2c_client->dev, "%s: Failed to alloc for F%d\n", __func__, rmi_fd.fn_number); return retval; } retval = synaptics_rmi4_f01_init(rmi4_data, fhandler, &rmi_fd, intr_count); if (retval < 0) return retval; retval = synaptics_rmi4_check_status(rmi4_data, &was_in_bl_mode); if (retval < 0) { dev_err(&rmi4_data->i2c_client->dev, "%s: Failed to check status\n", __func__); return retval; } if (was_in_bl_mode) { kfree(fhandler); fhandler = NULL; goto rescan_pdt; } if (rmi4_data->flash_prog_mode) goto flash_prog_mode; break; case SYNAPTICS_RMI4_F11: if (rmi_fd.intr_src_count == 0) break; retval = synaptics_rmi4_alloc_fh(&fhandler, &rmi_fd, page_number); if (retval < 0) { dev_err(&rmi4_data->i2c_client->dev, "%s: Failed to alloc for F%d\n", __func__, rmi_fd.fn_number); return retval; } retval = synaptics_rmi4_f11_init(rmi4_data, fhandler, &rmi_fd, intr_count); if (retval < 0) return retval; break; case SYNAPTICS_RMI4_F12: if (rmi_fd.intr_src_count == 0) break; retval = synaptics_rmi4_alloc_fh(&fhandler, &rmi_fd, page_number); if (retval < 0) { dev_err(&rmi4_data->i2c_client->dev, "%s: Failed to alloc for F%d\n", __func__, rmi_fd.fn_number); return retval; } retval = synaptics_rmi4_f12_init(rmi4_data, fhandler, &rmi_fd, intr_count); if (retval < 0) return retval; break; case SYNAPTICS_RMI4_F1A: if (rmi_fd.intr_src_count == 0) break; retval = synaptics_rmi4_alloc_fh(&fhandler, &rmi_fd, page_number); if (retval < 0) { dev_err(&rmi4_data->i2c_client->dev, "%s: Failed to alloc for F%d\n", __func__, rmi_fd.fn_number); return retval; } retval = synaptics_rmi4_f1a_init(rmi4_data, fhandler, &rmi_fd, intr_count); if (retval < 0) { #ifdef IGNORE_FN_INIT_FAILURE kfree(fhandler); fhandler = NULL; #else return retval; #endif } break; } /* Accumulate the interrupt count */ intr_count += (rmi_fd.intr_src_count & MASK_3BIT); if (fhandler && rmi_fd.intr_src_count) { list_add_tail(&fhandler->link, &rmi->support_fn_list); } } } flash_prog_mode: rmi4_data->num_of_intr_regs = (intr_count + 7) / 8; dev_dbg(&rmi4_data->i2c_client->dev, "%s: Number of interrupt registers = %d\n", __func__, rmi4_data->num_of_intr_regs); retval = synaptics_rmi4_i2c_read(rmi4_data, rmi4_data->f01_query_base_addr, f01_query, sizeof(f01_query)); if (retval < 0) return retval; /* RMI Version 4.0 currently supported */ rmi->version_major = 4; rmi->version_minor = 0; rmi->manufacturer_id = f01_query[0]; rmi->product_props = f01_query[1]; rmi->product_info[0] = f01_query[2] & MASK_7BIT; rmi->product_info[1] = f01_query[3] & MASK_7BIT; rmi->date_code[0] = f01_query[4] & MASK_5BIT; rmi->date_code[1] = f01_query[5] & MASK_4BIT; rmi->date_code[2] = f01_query[6] & MASK_5BIT; rmi->tester_id = ((f01_query[7] & MASK_7BIT) << 8) | (f01_query[8] & MASK_7BIT); rmi->serial_number = ((f01_query[9] & MASK_7BIT) << 8) | (f01_query[10] & MASK_7BIT); memcpy(rmi->product_id_string, &f01_query[11], 10); if (rmi->manufacturer_id != 1) { dev_err(&rmi4_data->i2c_client->dev, "%s: Non-Synaptics device found, manufacturer ID = %d\n", __func__, rmi->manufacturer_id); } retval = synaptics_rmi4_i2c_read(rmi4_data, rmi4_data->f01_query_base_addr + F01_BUID_ID_OFFSET, rmi->build_id, sizeof(rmi->build_id)); if (retval < 0) return retval; rmi4_data->firmware_id = (unsigned int)rmi->build_id[0] + (unsigned int)rmi->build_id[1] * 0x100 + (unsigned int)rmi->build_id[2] * 0x10000; memset(rmi4_data->intr_mask, 0x00, sizeof(rmi4_data->intr_mask)); /* * Map out the interrupt bit masks for the interrupt sources * from the registered function handlers. */ if (!list_empty(&rmi->support_fn_list)) { list_for_each_entry(fhandler, &rmi->support_fn_list, link) { if (fhandler->num_of_data_sources) { rmi4_data->intr_mask[fhandler->intr_reg_num] |= fhandler->intr_mask; } } } /* Enable the interrupt sources */ for (ii = 0; ii < rmi4_data->num_of_intr_regs; ii++) { if (rmi4_data->intr_mask[ii] != 0x00) { dev_dbg(&rmi4_data->i2c_client->dev, "%s: Interrupt enable mask %d = 0x%02x\n", __func__, ii, rmi4_data->intr_mask[ii]); intr_addr = rmi4_data->f01_ctrl_base_addr + 1 + ii; retval = synaptics_rmi4_i2c_write(rmi4_data, intr_addr, &(rmi4_data->intr_mask[ii]), sizeof(rmi4_data->intr_mask[ii])); if (retval < 0) return retval; } } synaptics_rmi4_set_configured(rmi4_data); return 0; } static void synaptics_rmi4_set_params(struct synaptics_rmi4_data *rmi4_data) { unsigned char ii; struct synaptics_rmi4_f1a_handle *f1a; struct synaptics_rmi4_fn *fhandler; struct synaptics_rmi4_device_info *rmi; rmi = &(rmi4_data->rmi4_mod_info); input_set_abs_params(rmi4_data->input_dev, ABS_MT_POSITION_X, 0, rmi4_data->sensor_max_x, 0, 0); input_set_abs_params(rmi4_data->input_dev, ABS_MT_POSITION_Y, 0, rmi4_data->sensor_max_y, 0, 0); #ifdef REPORT_2D_W input_set_abs_params(rmi4_data->input_dev, ABS_MT_TOUCH_MAJOR, 0, rmi4_data->max_touch_width, 0, 0); input_set_abs_params(rmi4_data->input_dev, ABS_MT_TOUCH_MINOR, 0, rmi4_data->max_touch_width, 0, 0); #endif #ifdef TYPE_B_PROTOCOL input_mt_init_slots(rmi4_data->input_dev, rmi4_data->num_of_fingers); #endif f1a = NULL; if (!list_empty(&rmi->support_fn_list)) { list_for_each_entry(fhandler, &rmi->support_fn_list, link) { if (fhandler->fn_number == SYNAPTICS_RMI4_F1A) f1a = fhandler->data; } } if (f1a) { for (ii = 0; ii < f1a->valid_button_count; ii++) { set_bit(f1a->button_map[ii], rmi4_data->input_dev->keybit); input_set_capability(rmi4_data->input_dev, EV_KEY, f1a->button_map[ii]); } } return; } static int synaptics_rmi4_set_input_dev(struct synaptics_rmi4_data *rmi4_data) { int retval; int temp; rmi4_data->input_dev = input_allocate_device(); if (rmi4_data->input_dev == NULL) { dev_err(&rmi4_data->i2c_client->dev, "%s: Failed to allocate input device\n", __func__); retval = -ENOMEM; goto err_input_device; } retval = synaptics_rmi4_query_device(rmi4_data); if (retval < 0) { dev_err(&rmi4_data->i2c_client->dev, "%s: Failed to query device\n", __func__); goto err_query_device; } rmi4_data->input_dev->name = DRIVER_NAME; rmi4_data->input_dev->phys = INPUT_PHYS_NAME; rmi4_data->input_dev->id.product = SYNAPTICS_DSX_DRIVER_PRODUCT; rmi4_data->input_dev->id.version = SYNAPTICS_DSX_DRIVER_VERSION; rmi4_data->input_dev->id.bustype = BUS_I2C; rmi4_data->input_dev->dev.parent = &rmi4_data->i2c_client->dev; input_set_drvdata(rmi4_data->input_dev, rmi4_data); set_bit(EV_SYN, rmi4_data->input_dev->evbit); set_bit(EV_KEY, rmi4_data->input_dev->evbit); set_bit(EV_ABS, rmi4_data->input_dev->evbit); set_bit(BTN_TOUCH, rmi4_data->input_dev->keybit); set_bit(BTN_TOOL_FINGER, rmi4_data->input_dev->keybit); #ifdef INPUT_PROP_DIRECT set_bit(INPUT_PROP_DIRECT, rmi4_data->input_dev->propbit); #endif synaptics_rmi4_set_params(rmi4_data); retval = input_register_device(rmi4_data->input_dev); if (retval) { dev_err(&rmi4_data->i2c_client->dev, "%s: Failed to register input device\n", __func__); goto err_register_input; } return 0; err_register_input: err_query_device: synaptics_rmi4_empty_fn_list(rmi4_data); input_free_device(rmi4_data->input_dev); err_input_device: return retval; } static int synaptics_rmi4_free_fingers(struct synaptics_rmi4_data *rmi4_data) { unsigned char ii; #ifdef TYPE_B_PROTOCOL for (ii = 0; ii < rmi4_data->num_of_fingers; ii++) { input_mt_slot(rmi4_data->input_dev, ii); input_mt_report_slot_state(rmi4_data->input_dev, MT_TOOL_FINGER, 0); } #endif input_report_key(rmi4_data->input_dev, BTN_TOUCH, 0); input_report_key(rmi4_data->input_dev, BTN_TOOL_FINGER, 0); #ifndef TYPE_B_PROTOCOL input_mt_sync(rmi4_data->input_dev); #endif input_sync(rmi4_data->input_dev); rmi4_data->fingers_on_2d = false; return 0; } static int synaptics_rmi4_reinit_device(struct synaptics_rmi4_data *rmi4_data) { int retval; unsigned char ii; unsigned short intr_addr; struct synaptics_rmi4_fn *fhandler; struct synaptics_rmi4_exp_fhandler *exp_fhandler; struct synaptics_rmi4_device_info *rmi; rmi = &(rmi4_data->rmi4_mod_info); mutex_lock(&(rmi4_data->rmi4_reset_mutex)); synaptics_rmi4_free_fingers(rmi4_data); if (!list_empty(&rmi->support_fn_list)) { list_for_each_entry(fhandler, &rmi->support_fn_list, link) { if (fhandler->fn_number == SYNAPTICS_RMI4_F12) { synaptics_rmi4_f12_set_enables(rmi4_data, 0); break; } } } for (ii = 0; ii < rmi4_data->num_of_intr_regs; ii++) { if (rmi4_data->intr_mask[ii] != 0x00) { dev_dbg(&rmi4_data->i2c_client->dev, "%s: Interrupt enable mask %d = 0x%02x\n", __func__, ii, rmi4_data->intr_mask[ii]); intr_addr = rmi4_data->f01_ctrl_base_addr + 1 + ii; retval = synaptics_rmi4_i2c_write(rmi4_data, intr_addr, &(rmi4_data->intr_mask[ii]), sizeof(rmi4_data->intr_mask[ii])); if (retval < 0) goto exit; } } mutex_lock(&exp_data.mutex); if (!list_empty(&exp_data.list)) { list_for_each_entry(exp_fhandler, &exp_data.list, link) if (exp_fhandler->exp_fn->reinit != NULL) exp_fhandler->exp_fn->reinit(rmi4_data); } mutex_unlock(&exp_data.mutex); synaptics_rmi4_set_configured(rmi4_data); retval = 0; exit: mutex_unlock(&(rmi4_data->rmi4_reset_mutex)); return retval; } static int synaptics_rmi4_reset_device(struct synaptics_rmi4_data *rmi4_data) { int retval; int temp; unsigned char command = 0x01; struct synaptics_rmi4_exp_fhandler *exp_fhandler; mutex_lock(&(rmi4_data->rmi4_reset_mutex)); rmi4_data->touch_stopped = true; retval = synaptics_rmi4_i2c_write(rmi4_data, rmi4_data->f01_cmd_base_addr, &command, sizeof(command)); if (retval < 0) { dev_err(&rmi4_data->i2c_client->dev, "%s: Failed to issue reset command, error = %d\n", __func__, retval); mutex_unlock(&(rmi4_data->rmi4_reset_mutex)); return retval; } msleep(DELAY_S7300_RESET_READY); synaptics_rmi4_free_fingers(rmi4_data); synaptics_rmi4_empty_fn_list(rmi4_data); retval = synaptics_rmi4_query_device(rmi4_data); if (retval < 0) { dev_err(&rmi4_data->i2c_client->dev, "%s: Failed to query device\n", __func__); mutex_unlock(&(rmi4_data->rmi4_reset_mutex)); return retval; } synaptics_rmi4_set_params(rmi4_data); mutex_lock(&exp_data.mutex); if (!list_empty(&exp_data.list)) { list_for_each_entry(exp_fhandler, &exp_data.list, link) if (exp_fhandler->exp_fn->reset != NULL) exp_fhandler->exp_fn->reset(rmi4_data); } mutex_unlock(&exp_data.mutex); rmi4_data->touch_stopped = false; mutex_unlock(&(rmi4_data->rmi4_reset_mutex)); return 0; } /** * synaptics_rmi4_exp_fn_work() * * Called by the kernel at the scheduled time. * * This function is a work thread that checks for the insertion and * removal of other expansion Function modules such as rmi_dev and calls * their initialization and removal callback functions accordingly. */ static void synaptics_rmi4_exp_fn_work(struct work_struct *work) { int retval; struct synaptics_rmi4_exp_fhandler *exp_fhandler; struct synaptics_rmi4_exp_fhandler *exp_fhandler_temp; struct synaptics_rmi4_data *rmi4_data = exp_data.rmi4_data; mutex_lock(&exp_data.mutex); if (!list_empty(&exp_data.list)) { list_for_each_entry_safe(exp_fhandler, exp_fhandler_temp, &exp_data.list, link) { if ((exp_fhandler->exp_fn->init != NULL) && exp_fhandler->insert) { retval = exp_fhandler->exp_fn->init(rmi4_data); if (retval < 0) { list_del(&exp_fhandler->link); kfree(exp_fhandler); } else { exp_fhandler->insert = false; } } else if ((exp_fhandler->exp_fn->remove != NULL) && exp_fhandler->remove) { exp_fhandler->exp_fn->remove(rmi4_data); list_del(&exp_fhandler->link); kfree(exp_fhandler); } } } mutex_unlock(&exp_data.mutex); return; } /** * synaptics_rmi4_new_function() * * Called by other expansion Function modules in their module init and * module exit functions. * * This function is used by other expansion Function modules such as * rmi_dev to register themselves with the driver by providing their * initialization and removal callback function pointers so that they * can be inserted or removed dynamically at module init and exit times, * respectively. */ void synaptics_rmi4_new_function(struct synaptics_rmi4_exp_fn *exp_fn, bool insert) { struct synaptics_rmi4_exp_fhandler *exp_fhandler; if (!exp_data.initialized) { mutex_init(&exp_data.mutex); INIT_LIST_HEAD(&exp_data.list); exp_data.initialized = true; } mutex_lock(&exp_data.mutex); if (insert) { exp_fhandler = kzalloc(sizeof(*exp_fhandler), GFP_KERNEL); if (!exp_fhandler) { pr_err("%s: Failed to alloc mem for expansion function\n", __func__); goto exit; } exp_fhandler->exp_fn = exp_fn; exp_fhandler->insert = true; exp_fhandler->remove = false; list_add_tail(&exp_fhandler->link, &exp_data.list); } else if (!list_empty(&exp_data.list)) { list_for_each_entry(exp_fhandler, &exp_data.list, link) { if (exp_fhandler->exp_fn->fn_type == exp_fn->fn_type) { exp_fhandler->insert = false; exp_fhandler->remove = true; goto exit; } } } exit: mutex_unlock(&exp_data.mutex); if (exp_data.queue_work) { queue_delayed_work(exp_data.workqueue, &exp_data.work, msecs_to_jiffies(EXP_FN_WORK_DELAY_MS)); } return; } EXPORT_SYMBOL(synaptics_rmi4_new_function); /** * synaptics_rmi4_probe() * * Called by the kernel when an association with an I2C device of the * same name is made (after doing i2c_add_driver). * * This funtion allocates and initializes the resources for the driver * as an input driver, turns on the power to the sensor, queries the * sensor for its supported Functions and characteristics, registers * the driver to the input subsystem, sets up the interrupt, handles * the registration of the early_suspend and late_resume functions, * and creates a work queue for detection of other expansion Function * modules. */ static int __devinit synaptics_rmi4_probe(struct i2c_client *client, const struct i2c_device_id *dev_id) { int retval; unsigned char attr_count; struct synaptics_rmi4_data *rmi4_data; if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { dev_err(&client->dev, "%s: SMBus byte data not supported\n", __func__); return -EIO; } // gpio setting mt_set_gpio_mode(GPIO_CTP_EINT_PIN, GPIO_CTP_EINT_PIN_M_EINT); mt_set_gpio_dir(GPIO_CTP_EINT_PIN, GPIO_DIR_IN); mt_set_gpio_pull_enable(GPIO_CTP_EINT_PIN, GPIO_PULL_ENABLE); mt_set_gpio_pull_select(GPIO_CTP_EINT_PIN, GPIO_PULL_UP); mt_set_gpio_mode(GPIO_CTP_RST_PIN, GPIO_CTP_RST_PIN_M_GPIO); mt_set_gpio_dir(GPIO_CTP_RST_PIN, GPIO_DIR_OUT); mt_set_gpio_out(GPIO_CTP_RST_PIN, GPIO_OUT_ONE); // power up sequence hwPowerOn(TPD_POWER_SOURCE, VOL_2800, "TP"); msleep(DELAY_S7300_BOOT_READY); mt_set_gpio_out(GPIO_CTP_RST_PIN, GPIO_OUT_ZERO); msleep(DELAY_S7300_RESET); mt_set_gpio_out(GPIO_CTP_RST_PIN, GPIO_OUT_ONE); msleep(DELAY_S7300_RESET_READY); rmi4_data = kzalloc(sizeof(*rmi4_data), GFP_KERNEL); if (!rmi4_data) { dev_err(&client->dev, "%s: Failed to alloc mem for rmi4_data\n", __func__); return -ENOMEM; } rmi4_data->i2c_client = client; rmi4_data->current_page = MASK_8BIT; rmi4_data->touch_stopped = false; rmi4_data->sensor_sleep = false; rmi4_data->irq_enabled = false; rmi4_data->fingers_on_2d = false; rmi4_data->i2c_read = synaptics_rmi4_i2c_read; rmi4_data->i2c_write = synaptics_rmi4_i2c_write; rmi4_data->irq_enable = synaptics_rmi4_irq_enable; rmi4_data->reset_device = synaptics_rmi4_reset_device; mutex_init(&(rmi4_data->rmi4_io_ctrl_mutex)); mutex_init(&(rmi4_data->rmi4_reset_mutex)); i2c_set_clientdata(client, rmi4_data); retval = synaptics_rmi4_set_input_dev(rmi4_data); if (retval < 0) { dev_err(&client->dev, "%s: Failed to set up input device\n", __func__); goto err_set_input_dev; } #ifdef CONFIG_HAS_EARLYSUSPEND rmi4_data->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1; rmi4_data->early_suspend.suspend = synaptics_rmi4_early_suspend; rmi4_data->early_suspend.resume = synaptics_rmi4_late_resume; register_early_suspend(&rmi4_data->early_suspend); #endif thread = kthread_run(touch_event_handler, rmi4_data, "synaptics-tpd"); if ( IS_ERR(thread) ) { retval = PTR_ERR(thread); pr_err(" %s: failed to create kernel thread: %d\n",__func__, retval); } retval = synaptics_rmi4_irq_enable(rmi4_data, true); if (retval < 0) { dev_err(&client->dev, "%s: Failed to enable attention interrupt\n", __func__); goto err_enable_irq; } if (!exp_data.initialized) { mutex_init(&exp_data.mutex); INIT_LIST_HEAD(&exp_data.list); exp_data.initialized = true; } exp_data.workqueue = create_singlethread_workqueue("dsx_exp_workqueue"); INIT_DELAYED_WORK(&exp_data.work, synaptics_rmi4_exp_fn_work); exp_data.rmi4_data = rmi4_data; exp_data.queue_work = true; queue_delayed_work(exp_data.workqueue, &exp_data.work, msecs_to_jiffies(EXP_FN_WORK_DELAY_MS)); for (attr_count = 0; attr_count < ARRAY_SIZE(attrs); attr_count++) { retval = sysfs_create_file(&rmi4_data->input_dev->dev.kobj, &attrs[attr_count].attr); if (retval < 0) { dev_err(&client->dev, "%s: Failed to create sysfs attributes\n", __func__); goto err_sysfs; } } tpd_load_status = 1; return retval; err_sysfs: for (attr_count--; attr_count >= 0; attr_count--) { sysfs_remove_file(&rmi4_data->input_dev->dev.kobj, &attrs[attr_count].attr); } cancel_delayed_work_sync(&exp_data.work); flush_workqueue(exp_data.workqueue); destroy_workqueue(exp_data.workqueue); synaptics_rmi4_irq_enable(rmi4_data, false); err_enable_irq: #ifdef CONFIG_HAS_EARLYSUSPEND unregister_early_suspend(&rmi4_data->early_suspend); #endif synaptics_rmi4_empty_fn_list(rmi4_data); input_unregister_device(rmi4_data->input_dev); rmi4_data->input_dev = NULL; err_set_input_dev: kfree(rmi4_data); return retval; } /** * synaptics_rmi4_remove() * * Called by the kernel when the association with an I2C device of the * same name is broken (when the driver is unloaded). * * This funtion terminates the work queue, stops sensor data acquisition, * frees the interrupt, unregisters the driver from the input subsystem, * turns off the power to the sensor, and frees other allocated resources. */ static int __devexit synaptics_rmi4_remove(struct i2c_client *client) { unsigned char attr_count; struct synaptics_rmi4_data *rmi4_data = i2c_get_clientdata(client); for (attr_count = 0; attr_count < ARRAY_SIZE(attrs); attr_count++) { sysfs_remove_file(&rmi4_data->input_dev->dev.kobj, &attrs[attr_count].attr); } cancel_delayed_work_sync(&exp_data.work); flush_workqueue(exp_data.workqueue); destroy_workqueue(exp_data.workqueue); synaptics_rmi4_irq_enable(rmi4_data, false); #ifdef CONFIG_HAS_EARLYSUSPEND unregister_early_suspend(&rmi4_data->early_suspend); #endif synaptics_rmi4_empty_fn_list(rmi4_data); input_unregister_device(rmi4_data->input_dev); rmi4_data->input_dev = NULL; kfree(rmi4_data); return 0; } #ifdef CONFIG_PM /** * synaptics_rmi4_sensor_sleep() * * Called by synaptics_rmi4_early_suspend() and synaptics_rmi4_suspend(). * * This function stops finger data acquisition and puts the sensor to sleep. */ static void synaptics_rmi4_sensor_sleep(struct synaptics_rmi4_data *rmi4_data) { int retval; unsigned char device_ctrl; retval = synaptics_rmi4_i2c_read(rmi4_data, rmi4_data->f01_ctrl_base_addr, &device_ctrl, sizeof(device_ctrl)); if (retval < 0) { dev_err(&(rmi4_data->input_dev->dev), "%s: Failed to enter sleep mode\n", __func__); rmi4_data->sensor_sleep = false; return; } device_ctrl = (device_ctrl & ~MASK_3BIT); device_ctrl = (device_ctrl | NO_SLEEP_OFF | SENSOR_SLEEP); retval = synaptics_rmi4_i2c_write(rmi4_data, rmi4_data->f01_ctrl_base_addr, &device_ctrl, sizeof(device_ctrl)); if (retval < 0) { dev_err(&(rmi4_data->input_dev->dev), "%s: Failed to enter sleep mode\n", __func__); rmi4_data->sensor_sleep = false; return; } else { rmi4_data->sensor_sleep = true; } return; } /** * synaptics_rmi4_sensor_wake() * * Called by synaptics_rmi4_resume() and synaptics_rmi4_late_resume(). * * This function wakes the sensor from sleep. */ static void synaptics_rmi4_sensor_wake(struct synaptics_rmi4_data *rmi4_data) { int retval; unsigned char device_ctrl; unsigned char no_sleep_setting = rmi4_data->no_sleep_setting; retval = synaptics_rmi4_i2c_read(rmi4_data, rmi4_data->f01_ctrl_base_addr, &device_ctrl, sizeof(device_ctrl)); if (retval < 0) { dev_err(&(rmi4_data->input_dev->dev), "%s: Failed to wake from sleep mode\n", __func__); rmi4_data->sensor_sleep = true; return; } device_ctrl = (device_ctrl & ~MASK_3BIT); device_ctrl = (device_ctrl | no_sleep_setting | NORMAL_OPERATION); retval = synaptics_rmi4_i2c_write(rmi4_data, rmi4_data->f01_ctrl_base_addr, &device_ctrl, sizeof(device_ctrl)); if (retval < 0) { dev_err(&(rmi4_data->input_dev->dev), "%s: Failed to wake from sleep mode\n", __func__); rmi4_data->sensor_sleep = true; return; } else { rmi4_data->sensor_sleep = false; } return; } #ifdef CONFIG_HAS_EARLYSUSPEND /** * synaptics_rmi4_early_suspend() * * Called by the kernel during the early suspend phase when the system * enters suspend. * * This function calls synaptics_rmi4_sensor_sleep() to stop finger * data acquisition and put the sensor to sleep. */ static void synaptics_rmi4_early_suspend(struct early_suspend *h) { struct synaptics_rmi4_exp_fhandler *exp_fhandler; struct synaptics_rmi4_data *rmi4_data = container_of(h, struct synaptics_rmi4_data, early_suspend); if (rmi4_data->stay_awake) { rmi4_data->staying_awake = true; return; } else { rmi4_data->staying_awake = false; } rmi4_data->touch_stopped = true; synaptics_rmi4_irq_enable(rmi4_data, false); synaptics_rmi4_sensor_sleep(rmi4_data); synaptics_rmi4_free_fingers(rmi4_data); mutex_lock(&exp_data.mutex); if (!list_empty(&exp_data.list)) { list_for_each_entry(exp_fhandler, &exp_data.list, link) if (exp_fhandler->exp_fn->early_suspend != NULL) exp_fhandler->exp_fn->early_suspend(rmi4_data); } mutex_unlock(&exp_data.mutex); if (rmi4_data->full_pm_cycle) synaptics_rmi4_suspend(&(rmi4_data->input_dev->dev)); return; } /** * synaptics_rmi4_late_resume() * * Called by the kernel during the late resume phase when the system * wakes up from suspend. * * This function goes through the sensor wake process if the system wakes * up from early suspend (without going into suspend). */ static void synaptics_rmi4_late_resume(struct early_suspend *h) { int retval; struct synaptics_rmi4_exp_fhandler *exp_fhandler; struct synaptics_rmi4_data *rmi4_data = container_of(h, struct synaptics_rmi4_data, early_suspend); if (rmi4_data->staying_awake) return; if (rmi4_data->full_pm_cycle) synaptics_rmi4_resume(&(rmi4_data->input_dev->dev)); if (rmi4_data->sensor_sleep == true) { synaptics_rmi4_sensor_wake(rmi4_data); synaptics_rmi4_irq_enable(rmi4_data, true); retval = synaptics_rmi4_reinit_device(rmi4_data); if (retval < 0) { dev_err(&rmi4_data->i2c_client->dev, "%s: Failed to reinit device\n", __func__); } } mutex_lock(&exp_data.mutex); if (!list_empty(&exp_data.list)) { list_for_each_entry(exp_fhandler, &exp_data.list, link) if (exp_fhandler->exp_fn->late_resume != NULL) exp_fhandler->exp_fn->late_resume(rmi4_data); } mutex_unlock(&exp_data.mutex); rmi4_data->touch_stopped = false; return; } #endif /** * synaptics_rmi4_suspend() * * Called by the kernel during the suspend phase when the system * enters suspend. * * This function stops finger data acquisition and puts the sensor to * sleep (if not already done so during the early suspend phase), * disables the interrupt, and turns off the power to the sensor. */ static int synaptics_rmi4_suspend(struct device *dev) { struct synaptics_rmi4_exp_fhandler *exp_fhandler; struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev); if (rmi4_data->staying_awake) return 0; if (!rmi4_data->sensor_sleep) { rmi4_data->touch_stopped = true; synaptics_rmi4_irq_enable(rmi4_data, false); synaptics_rmi4_sensor_sleep(rmi4_data); synaptics_rmi4_free_fingers(rmi4_data); } mutex_lock(&exp_data.mutex); if (!list_empty(&exp_data.list)) { list_for_each_entry(exp_fhandler, &exp_data.list, link) if (exp_fhandler->exp_fn->suspend != NULL) exp_fhandler->exp_fn->suspend(rmi4_data); } mutex_unlock(&exp_data.mutex); tpd_halt = 1; return 0; } /** * synaptics_rmi4_resume() * * Called by the kernel during the resume phase when the system * wakes up from suspend. * * This function turns on the power to the sensor, wakes the sensor * from sleep, enables the interrupt, and starts finger data * acquisition. */ static int synaptics_rmi4_resume(struct device *dev) { int retval; struct synaptics_rmi4_exp_fhandler *exp_fhandler; struct synaptics_rmi4_data *rmi4_data = dev_get_drvdata(dev); if (rmi4_data->staying_awake) return 0; synaptics_rmi4_sensor_wake(rmi4_data); synaptics_rmi4_irq_enable(rmi4_data, true); retval = synaptics_rmi4_reinit_device(rmi4_data); if (retval < 0) { dev_err(&rmi4_data->i2c_client->dev, "%s: Failed to reinit device\n", __func__); return retval; } mutex_lock(&exp_data.mutex); if (!list_empty(&exp_data.list)) { list_for_each_entry(exp_fhandler, &exp_data.list, link) if (exp_fhandler->exp_fn->resume != NULL) exp_fhandler->exp_fn->resume(rmi4_data); } mutex_unlock(&exp_data.mutex); rmi4_data->touch_stopped = false; tpd_halt = 0; return 0; } static const struct dev_pm_ops synaptics_rmi4_dev_pm_ops = { .suspend = synaptics_rmi4_suspend, .resume = synaptics_rmi4_resume, }; #endif static const struct i2c_device_id synaptics_rmi4_id_table[] = { {"synaptics-tpd", 0}, {}, }; unsigned short force[] = {0,TPD_I2C_ADDR,I2C_CLIENT_END,I2C_CLIENT_END}; static const unsigned short * const forces[] = { force, NULL }; //static int tpd_detect(struct i2c_client *client, struct i2c_board_info *info); MODULE_DEVICE_TABLE(i2c, synaptics_rmi4_id_table); static struct i2c_driver tpd_i2c_driver = { .probe = synaptics_rmi4_probe, .remove = __devexit_p(synaptics_rmi4_remove), //.detect = tpd_detect, .driver.name = "synaptics-tpd", .id_table = synaptics_rmi4_id_table, .address_list = (const unsigned short*) forces, }; static int tpd_local_init(void) { TPD_DMESG("synaptics I2C Touchscreen Driver (Built %s @ %s)\n", __DATE__, __TIME__); if(i2c_add_driver(&tpd_i2c_driver)!=0) { TPD_DMESG("tangjie Error unable to add i2c driver.\n"); return -1; } #ifdef TPD_HAVE_BUTTON tpd_button_setting(TPD_KEY_COUNT, tpd_keys_local, tpd_keys_dim_local);// initialize tpd button data #endif boot_mode = get_boot_mode(); if (boot_mode == 3) { boot_mode = NORMAL_BOOT; } return 0; } static struct tpd_driver_t synaptics_rmi4_driver = { .tpd_device_name = "synaptics_tpd", .tpd_local_init = tpd_local_init, .suspend = synaptics_rmi4_suspend, .resume = synaptics_rmi4_resume, #ifdef TPD_HAVE_BUTTON .tpd_have_button = 1, #else .tpd_have_button = 0, #endif }; struct i2c_board_info __initdata i2c_tpd={ I2C_BOARD_INFO("synaptics-tpd", TPD_I2C_ADDR)}; /** * synaptics_rmi4_init() * * Called by the kernel during do_initcalls (if built-in) * or when the driver is loaded (if a module). * * This function registers the driver to the I2C subsystem. * */ static int __init synaptics_rmi4_init(void) { i2c_register_board_info(TPD_I2C_NUMBER, &i2c_tpd, 1); if(tpd_driver_add(&synaptics_rmi4_driver) < 0){ pr_err("Fail to add tpd driver\n"); return -1; } return 0; } /** * synaptics_rmi4_exit() * * Called by the kernel when the driver is unloaded. * * This funtion unregisters the driver from the I2C subsystem. * */ static void __exit synaptics_rmi4_exit(void) { i2c_del_driver(&synaptics_rmi4_driver); return; } module_init(synaptics_rmi4_init); module_exit(synaptics_rmi4_exit); MODULE_AUTHOR("Synaptics, Inc."); MODULE_DESCRIPTION("Synaptics DSX I2C Touch Driver"); MODULE_LICENSE("GPL v2");