| /* |
| * Atmel maXTouch Touchscreen driver |
| * |
| * Copyright (C) 2010 Samsung Electronics Co.Ltd |
| * Author: Joonyoung Shim <jy0922.shim@samsung.com> |
| * Copyright (c) 2011-2012, Code Aurora Forum. All rights reserved. |
| * |
| * 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. |
| * |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/delay.h> |
| #include <linux/firmware.h> |
| #include <linux/i2c.h> |
| #include <linux/i2c/atmel_mxt_ts.h> |
| #include <linux/input.h> |
| #include <linux/interrupt.h> |
| #include <linux/slab.h> |
| #include <linux/gpio.h> |
| #include <linux/regulator/consumer.h> |
| |
| #if defined(CONFIG_HAS_EARLYSUSPEND) |
| #include <linux/earlysuspend.h> |
| /* Early-suspend level */ |
| #define MXT_SUSPEND_LEVEL 1 |
| #endif |
| |
| /* Family ID */ |
| #define MXT224_ID 0x80 |
| #define MXT224E_ID 0x81 |
| #define MXT1386_ID 0xA0 |
| |
| /* Version */ |
| #define MXT_VER_20 20 |
| #define MXT_VER_21 21 |
| #define MXT_VER_22 22 |
| |
| /* Slave addresses */ |
| #define MXT_APP_LOW 0x4a |
| #define MXT_APP_HIGH 0x4b |
| #define MXT_BOOT_LOW 0x24 |
| #define MXT_BOOT_HIGH 0x25 |
| |
| /* Firmware */ |
| #define MXT_FW_NAME "maxtouch.fw" |
| |
| /* Registers */ |
| #define MXT_FAMILY_ID 0x00 |
| #define MXT_VARIANT_ID 0x01 |
| #define MXT_VERSION 0x02 |
| #define MXT_BUILD 0x03 |
| #define MXT_MATRIX_X_SIZE 0x04 |
| #define MXT_MATRIX_Y_SIZE 0x05 |
| #define MXT_OBJECT_NUM 0x06 |
| #define MXT_OBJECT_START 0x07 |
| |
| #define MXT_OBJECT_SIZE 6 |
| |
| /* Object types */ |
| #define MXT_DEBUG_DIAGNOSTIC_T37 37 |
| #define MXT_GEN_MESSAGE_T5 5 |
| #define MXT_GEN_COMMAND_T6 6 |
| #define MXT_GEN_POWER_T7 7 |
| #define MXT_GEN_ACQUIRE_T8 8 |
| #define MXT_GEN_DATASOURCE_T53 53 |
| #define MXT_TOUCH_MULTI_T9 9 |
| #define MXT_TOUCH_KEYARRAY_T15 15 |
| #define MXT_TOUCH_PROXIMITY_T23 23 |
| #define MXT_TOUCH_PROXKEY_T52 52 |
| #define MXT_PROCI_GRIPFACE_T20 20 |
| #define MXT_PROCG_NOISE_T22 22 |
| #define MXT_PROCI_ONETOUCH_T24 24 |
| #define MXT_PROCI_TWOTOUCH_T27 27 |
| #define MXT_PROCI_GRIP_T40 40 |
| #define MXT_PROCI_PALM_T41 41 |
| #define MXT_PROCI_TOUCHSUPPRESSION_T42 42 |
| #define MXT_PROCI_STYLUS_T47 47 |
| #define MXT_PROCG_NOISESUPPRESSION_T48 48 |
| #define MXT_SPT_COMMSCONFIG_T18 18 |
| #define MXT_SPT_GPIOPWM_T19 19 |
| #define MXT_SPT_SELFTEST_T25 25 |
| #define MXT_SPT_CTECONFIG_T28 28 |
| #define MXT_SPT_USERDATA_T38 38 |
| #define MXT_SPT_DIGITIZER_T43 43 |
| #define MXT_SPT_MESSAGECOUNT_T44 44 |
| #define MXT_SPT_CTECONFIG_T46 46 |
| |
| /* MXT_GEN_COMMAND_T6 field */ |
| #define MXT_COMMAND_RESET 0 |
| #define MXT_COMMAND_BACKUPNV 1 |
| #define MXT_COMMAND_CALIBRATE 2 |
| #define MXT_COMMAND_REPORTALL 3 |
| #define MXT_COMMAND_DIAGNOSTIC 5 |
| |
| /* MXT_GEN_POWER_T7 field */ |
| #define MXT_POWER_IDLEACQINT 0 |
| #define MXT_POWER_ACTVACQINT 1 |
| #define MXT_POWER_ACTV2IDLETO 2 |
| |
| /* MXT_GEN_ACQUIRE_T8 field */ |
| #define MXT_ACQUIRE_CHRGTIME 0 |
| #define MXT_ACQUIRE_TCHDRIFT 2 |
| #define MXT_ACQUIRE_DRIFTST 3 |
| #define MXT_ACQUIRE_TCHAUTOCAL 4 |
| #define MXT_ACQUIRE_SYNC 5 |
| #define MXT_ACQUIRE_ATCHCALST 6 |
| #define MXT_ACQUIRE_ATCHCALSTHR 7 |
| |
| /* MXT_TOUCH_MULT_T9 field */ |
| #define MXT_TOUCH_CTRL 0 |
| #define MXT_TOUCH_XORIGIN 1 |
| #define MXT_TOUCH_YORIGIN 2 |
| #define MXT_TOUCH_XSIZE 3 |
| #define MXT_TOUCH_YSIZE 4 |
| #define MXT_TOUCH_BLEN 6 |
| #define MXT_TOUCH_TCHTHR 7 |
| #define MXT_TOUCH_TCHDI 8 |
| #define MXT_TOUCH_ORIENT 9 |
| #define MXT_TOUCH_MOVHYSTI 11 |
| #define MXT_TOUCH_MOVHYSTN 12 |
| #define MXT_TOUCH_NUMTOUCH 14 |
| #define MXT_TOUCH_MRGHYST 15 |
| #define MXT_TOUCH_MRGTHR 16 |
| #define MXT_TOUCH_AMPHYST 17 |
| #define MXT_TOUCH_XRANGE_LSB 18 |
| #define MXT_TOUCH_XRANGE_MSB 19 |
| #define MXT_TOUCH_YRANGE_LSB 20 |
| #define MXT_TOUCH_YRANGE_MSB 21 |
| #define MXT_TOUCH_XLOCLIP 22 |
| #define MXT_TOUCH_XHICLIP 23 |
| #define MXT_TOUCH_YLOCLIP 24 |
| #define MXT_TOUCH_YHICLIP 25 |
| #define MXT_TOUCH_XEDGECTRL 26 |
| #define MXT_TOUCH_XEDGEDIST 27 |
| #define MXT_TOUCH_YEDGECTRL 28 |
| #define MXT_TOUCH_YEDGEDIST 29 |
| #define MXT_TOUCH_JUMPLIMIT 30 |
| |
| /* MXT_PROCI_GRIPFACE_T20 field */ |
| #define MXT_GRIPFACE_CTRL 0 |
| #define MXT_GRIPFACE_XLOGRIP 1 |
| #define MXT_GRIPFACE_XHIGRIP 2 |
| #define MXT_GRIPFACE_YLOGRIP 3 |
| #define MXT_GRIPFACE_YHIGRIP 4 |
| #define MXT_GRIPFACE_MAXTCHS 5 |
| #define MXT_GRIPFACE_SZTHR1 7 |
| #define MXT_GRIPFACE_SZTHR2 8 |
| #define MXT_GRIPFACE_SHPTHR1 9 |
| #define MXT_GRIPFACE_SHPTHR2 10 |
| #define MXT_GRIPFACE_SUPEXTTO 11 |
| |
| /* MXT_PROCI_NOISE field */ |
| #define MXT_NOISE_CTRL 0 |
| #define MXT_NOISE_OUTFLEN 1 |
| #define MXT_NOISE_GCAFUL_LSB 3 |
| #define MXT_NOISE_GCAFUL_MSB 4 |
| #define MXT_NOISE_GCAFLL_LSB 5 |
| #define MXT_NOISE_GCAFLL_MSB 6 |
| #define MXT_NOISE_ACTVGCAFVALID 7 |
| #define MXT_NOISE_NOISETHR 8 |
| #define MXT_NOISE_FREQHOPSCALE 10 |
| #define MXT_NOISE_FREQ0 11 |
| #define MXT_NOISE_FREQ1 12 |
| #define MXT_NOISE_FREQ2 13 |
| #define MXT_NOISE_FREQ3 14 |
| #define MXT_NOISE_FREQ4 15 |
| #define MXT_NOISE_IDLEGCAFVALID 16 |
| |
| /* MXT_SPT_COMMSCONFIG_T18 */ |
| #define MXT_COMMS_CTRL 0 |
| #define MXT_COMMS_CMD 1 |
| |
| /* MXT_SPT_CTECONFIG_T28 field */ |
| #define MXT_CTE_CTRL 0 |
| #define MXT_CTE_CMD 1 |
| #define MXT_CTE_MODE 2 |
| #define MXT_CTE_IDLEGCAFDEPTH 3 |
| #define MXT_CTE_ACTVGCAFDEPTH 4 |
| #define MXT_CTE_VOLTAGE 5 |
| |
| #define MXT_VOLTAGE_DEFAULT 2700000 |
| #define MXT_VOLTAGE_STEP 10000 |
| |
| /* Analog voltage @2.7 V */ |
| #define MXT_VTG_MIN_UV 2700000 |
| #define MXT_VTG_MAX_UV 3300000 |
| #define MXT_ACTIVE_LOAD_UA 15000 |
| #define MXT_LPM_LOAD_UA 10 |
| /* Digital voltage @1.8 V */ |
| #define MXT_VTG_DIG_MIN_UV 1800000 |
| #define MXT_VTG_DIG_MAX_UV 1800000 |
| #define MXT_ACTIVE_LOAD_DIG_UA 10000 |
| #define MXT_LPM_LOAD_DIG_UA 10 |
| |
| #define MXT_I2C_VTG_MIN_UV 1800000 |
| #define MXT_I2C_VTG_MAX_UV 1800000 |
| #define MXT_I2C_LOAD_UA 10000 |
| #define MXT_I2C_LPM_LOAD_UA 10 |
| |
| /* Define for MXT_GEN_COMMAND_T6 */ |
| #define MXT_BOOT_VALUE 0xa5 |
| #define MXT_BACKUP_VALUE 0x55 |
| #define MXT_BACKUP_TIME 25 /* msec */ |
| #define MXT224_RESET_TIME 65 /* msec */ |
| #define MXT224E_RESET_TIME 22 /* msec */ |
| #define MXT1386_RESET_TIME 250 /* msec */ |
| #define MXT_RESET_TIME 250 /* msec */ |
| #define MXT_RESET_NOCHGREAD 400 /* msec */ |
| |
| #define MXT_FWRESET_TIME 175 /* msec */ |
| |
| #define MXT_WAKE_TIME 25 |
| |
| /* Command to unlock bootloader */ |
| #define MXT_UNLOCK_CMD_MSB 0xaa |
| #define MXT_UNLOCK_CMD_LSB 0xdc |
| |
| /* Bootloader mode status */ |
| #define MXT_WAITING_BOOTLOAD_CMD 0xc0 /* valid 7 6 bit only */ |
| #define MXT_WAITING_FRAME_DATA 0x80 /* valid 7 6 bit only */ |
| #define MXT_FRAME_CRC_CHECK 0x02 |
| #define MXT_FRAME_CRC_FAIL 0x03 |
| #define MXT_FRAME_CRC_PASS 0x04 |
| #define MXT_APP_CRC_FAIL 0x40 /* valid 7 8 bit only */ |
| #define MXT_BOOT_STATUS_MASK 0x3f |
| |
| /* Touch status */ |
| #define MXT_SUPPRESS (1 << 1) |
| #define MXT_AMP (1 << 2) |
| #define MXT_VECTOR (1 << 3) |
| #define MXT_MOVE (1 << 4) |
| #define MXT_RELEASE (1 << 5) |
| #define MXT_PRESS (1 << 6) |
| #define MXT_DETECT (1 << 7) |
| |
| /* Touch orient bits */ |
| #define MXT_XY_SWITCH (1 << 0) |
| #define MXT_X_INVERT (1 << 1) |
| #define MXT_Y_INVERT (1 << 2) |
| |
| /* Touchscreen absolute values */ |
| #define MXT_MAX_AREA 0xff |
| |
| #define MXT_MAX_FINGER 10 |
| |
| #define T7_DATA_SIZE 3 |
| #define MXT_MAX_RW_TRIES 3 |
| #define MXT_BLOCK_SIZE 256 |
| |
| struct mxt_info { |
| u8 family_id; |
| u8 variant_id; |
| u8 version; |
| u8 build; |
| u8 matrix_xsize; |
| u8 matrix_ysize; |
| u8 object_num; |
| }; |
| |
| struct mxt_object { |
| u8 type; |
| u16 start_address; |
| u8 size; |
| u8 instances; |
| u8 num_report_ids; |
| |
| /* to map object and message */ |
| u8 max_reportid; |
| }; |
| |
| struct mxt_message { |
| u8 reportid; |
| u8 message[7]; |
| u8 checksum; |
| }; |
| |
| struct mxt_finger { |
| int status; |
| int x; |
| int y; |
| int area; |
| int pressure; |
| }; |
| |
| /* Each client has this additional data */ |
| struct mxt_data { |
| struct i2c_client *client; |
| struct input_dev *input_dev; |
| const struct mxt_platform_data *pdata; |
| const struct mxt_config_info *config_info; |
| struct mxt_object *object_table; |
| struct mxt_info info; |
| struct mxt_finger finger[MXT_MAX_FINGER]; |
| unsigned int irq; |
| struct regulator *vcc_ana; |
| struct regulator *vcc_dig; |
| struct regulator *vcc_i2c; |
| #if defined(CONFIG_HAS_EARLYSUSPEND) |
| struct early_suspend early_suspend; |
| #endif |
| |
| u8 t7_data[T7_DATA_SIZE]; |
| u16 t7_start_addr; |
| u8 t9_ctrl; |
| u32 keyarray_old; |
| u32 keyarray_new; |
| u8 t9_max_reportid; |
| u8 t9_min_reportid; |
| u8 t15_max_reportid; |
| u8 t15_min_reportid; |
| u8 curr_cfg_version; |
| int cfg_version_idx; |
| }; |
| |
| static bool mxt_object_readable(unsigned int type) |
| { |
| switch (type) { |
| case MXT_GEN_MESSAGE_T5: |
| case MXT_GEN_COMMAND_T6: |
| case MXT_GEN_POWER_T7: |
| case MXT_GEN_ACQUIRE_T8: |
| case MXT_GEN_DATASOURCE_T53: |
| case MXT_TOUCH_MULTI_T9: |
| case MXT_TOUCH_KEYARRAY_T15: |
| case MXT_TOUCH_PROXIMITY_T23: |
| case MXT_TOUCH_PROXKEY_T52: |
| case MXT_PROCI_GRIPFACE_T20: |
| case MXT_PROCG_NOISE_T22: |
| case MXT_PROCI_ONETOUCH_T24: |
| case MXT_PROCI_TWOTOUCH_T27: |
| case MXT_PROCI_GRIP_T40: |
| case MXT_PROCI_PALM_T41: |
| case MXT_PROCI_TOUCHSUPPRESSION_T42: |
| case MXT_PROCI_STYLUS_T47: |
| case MXT_PROCG_NOISESUPPRESSION_T48: |
| case MXT_SPT_COMMSCONFIG_T18: |
| case MXT_SPT_GPIOPWM_T19: |
| case MXT_SPT_SELFTEST_T25: |
| case MXT_SPT_CTECONFIG_T28: |
| case MXT_SPT_USERDATA_T38: |
| case MXT_SPT_DIGITIZER_T43: |
| case MXT_SPT_CTECONFIG_T46: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| static bool mxt_object_writable(unsigned int type) |
| { |
| switch (type) { |
| case MXT_GEN_COMMAND_T6: |
| case MXT_GEN_POWER_T7: |
| case MXT_GEN_ACQUIRE_T8: |
| case MXT_TOUCH_MULTI_T9: |
| case MXT_TOUCH_KEYARRAY_T15: |
| case MXT_TOUCH_PROXIMITY_T23: |
| case MXT_TOUCH_PROXKEY_T52: |
| case MXT_PROCI_GRIPFACE_T20: |
| case MXT_PROCG_NOISE_T22: |
| case MXT_PROCI_ONETOUCH_T24: |
| case MXT_PROCI_TWOTOUCH_T27: |
| case MXT_PROCI_GRIP_T40: |
| case MXT_PROCI_PALM_T41: |
| case MXT_PROCI_TOUCHSUPPRESSION_T42: |
| case MXT_PROCI_STYLUS_T47: |
| case MXT_PROCG_NOISESUPPRESSION_T48: |
| case MXT_SPT_COMMSCONFIG_T18: |
| case MXT_SPT_GPIOPWM_T19: |
| case MXT_SPT_SELFTEST_T25: |
| case MXT_SPT_CTECONFIG_T28: |
| case MXT_SPT_USERDATA_T38: |
| case MXT_SPT_DIGITIZER_T43: |
| case MXT_SPT_CTECONFIG_T46: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| static void mxt_dump_message(struct device *dev, |
| struct mxt_message *message) |
| { |
| dev_dbg(dev, "reportid:\t0x%x\n", message->reportid); |
| dev_dbg(dev, "message1:\t0x%x\n", message->message[0]); |
| dev_dbg(dev, "message2:\t0x%x\n", message->message[1]); |
| dev_dbg(dev, "message3:\t0x%x\n", message->message[2]); |
| dev_dbg(dev, "message4:\t0x%x\n", message->message[3]); |
| dev_dbg(dev, "message5:\t0x%x\n", message->message[4]); |
| dev_dbg(dev, "message6:\t0x%x\n", message->message[5]); |
| dev_dbg(dev, "message7:\t0x%x\n", message->message[6]); |
| dev_dbg(dev, "checksum:\t0x%x\n", message->checksum); |
| } |
| |
| static int mxt_check_bootloader(struct i2c_client *client, |
| unsigned int state) |
| { |
| u8 val; |
| |
| recheck: |
| if (i2c_master_recv(client, &val, 1) != 1) { |
| dev_err(&client->dev, "%s: i2c recv failed\n", __func__); |
| return -EIO; |
| } |
| |
| switch (state) { |
| case MXT_WAITING_BOOTLOAD_CMD: |
| case MXT_WAITING_FRAME_DATA: |
| val &= ~MXT_BOOT_STATUS_MASK; |
| break; |
| case MXT_FRAME_CRC_PASS: |
| if (val == MXT_FRAME_CRC_CHECK) |
| goto recheck; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| if (val != state) { |
| dev_err(&client->dev, "Unvalid bootloader mode state\n"); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int mxt_unlock_bootloader(struct i2c_client *client) |
| { |
| u8 buf[2]; |
| |
| buf[0] = MXT_UNLOCK_CMD_LSB; |
| buf[1] = MXT_UNLOCK_CMD_MSB; |
| |
| if (i2c_master_send(client, buf, 2) != 2) { |
| dev_err(&client->dev, "%s: i2c send failed\n", __func__); |
| return -EIO; |
| } |
| |
| return 0; |
| } |
| |
| static int mxt_fw_write(struct i2c_client *client, |
| const u8 *data, unsigned int frame_size) |
| { |
| if (i2c_master_send(client, data, frame_size) != frame_size) { |
| dev_err(&client->dev, "%s: i2c send failed\n", __func__); |
| return -EIO; |
| } |
| |
| return 0; |
| } |
| |
| static int __mxt_read_reg(struct i2c_client *client, |
| u16 reg, u16 len, void *val) |
| { |
| struct i2c_msg xfer[2]; |
| u8 buf[2]; |
| int i = 0; |
| |
| buf[0] = reg & 0xff; |
| buf[1] = (reg >> 8) & 0xff; |
| |
| /* Write register */ |
| xfer[0].addr = client->addr; |
| xfer[0].flags = 0; |
| xfer[0].len = 2; |
| xfer[0].buf = buf; |
| |
| /* Read data */ |
| xfer[1].addr = client->addr; |
| xfer[1].flags = I2C_M_RD; |
| xfer[1].len = len; |
| xfer[1].buf = val; |
| |
| do { |
| if (i2c_transfer(client->adapter, xfer, 2) == 2) |
| return 0; |
| msleep(MXT_WAKE_TIME); |
| } while (++i < MXT_MAX_RW_TRIES); |
| |
| dev_err(&client->dev, "%s: i2c transfer failed\n", __func__); |
| return -EIO; |
| } |
| |
| static int mxt_read_reg(struct i2c_client *client, u16 reg, u8 *val) |
| { |
| return __mxt_read_reg(client, reg, 1, val); |
| } |
| |
| static int __mxt_write_reg(struct i2c_client *client, |
| u16 addr, u16 length, u8 *value) |
| { |
| u8 buf[MXT_BLOCK_SIZE + 2]; |
| int i, tries = 0; |
| |
| if (length > MXT_BLOCK_SIZE) |
| return -EINVAL; |
| |
| buf[0] = addr & 0xff; |
| buf[1] = (addr >> 8) & 0xff; |
| for (i = 0; i < length; i++) |
| buf[i + 2] = *value++; |
| |
| do { |
| if (i2c_master_send(client, buf, length + 2) == (length + 2)) |
| return 0; |
| msleep(MXT_WAKE_TIME); |
| } while (++tries < MXT_MAX_RW_TRIES); |
| |
| dev_err(&client->dev, "%s: i2c send failed\n", __func__); |
| return -EIO; |
| } |
| |
| static int mxt_write_reg(struct i2c_client *client, u16 reg, u8 val) |
| { |
| return __mxt_write_reg(client, reg, 1, &val); |
| } |
| |
| static int mxt_read_object_table(struct i2c_client *client, |
| u16 reg, u8 *object_buf) |
| { |
| return __mxt_read_reg(client, reg, MXT_OBJECT_SIZE, |
| object_buf); |
| } |
| |
| static struct mxt_object * |
| mxt_get_object(struct mxt_data *data, u8 type) |
| { |
| struct mxt_object *object; |
| int i; |
| |
| for (i = 0; i < data->info.object_num; i++) { |
| object = data->object_table + i; |
| if (object->type == type) |
| return object; |
| } |
| |
| dev_err(&data->client->dev, "Invalid object type\n"); |
| return NULL; |
| } |
| |
| static int mxt_read_message(struct mxt_data *data, |
| struct mxt_message *message) |
| { |
| struct mxt_object *object; |
| u16 reg; |
| |
| object = mxt_get_object(data, MXT_GEN_MESSAGE_T5); |
| if (!object) |
| return -EINVAL; |
| |
| reg = object->start_address; |
| return __mxt_read_reg(data->client, reg, |
| sizeof(struct mxt_message), message); |
| } |
| |
| static int mxt_read_object(struct mxt_data *data, |
| u8 type, u8 offset, u8 *val) |
| { |
| struct mxt_object *object; |
| u16 reg; |
| |
| object = mxt_get_object(data, type); |
| if (!object) |
| return -EINVAL; |
| |
| reg = object->start_address; |
| return __mxt_read_reg(data->client, reg + offset, 1, val); |
| } |
| |
| static int mxt_write_object(struct mxt_data *data, |
| u8 type, u8 offset, u8 val) |
| { |
| struct mxt_object *object; |
| u16 reg; |
| |
| object = mxt_get_object(data, type); |
| if (!object) |
| return -EINVAL; |
| |
| reg = object->start_address; |
| return mxt_write_reg(data->client, reg + offset, val); |
| } |
| |
| static void mxt_input_report(struct mxt_data *data, int single_id) |
| { |
| struct mxt_finger *finger = data->finger; |
| struct input_dev *input_dev = data->input_dev; |
| int status = finger[single_id].status; |
| int finger_num = 0; |
| int id; |
| |
| for (id = 0; id < MXT_MAX_FINGER; id++) { |
| if (!finger[id].status) |
| continue; |
| |
| input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, |
| finger[id].status != MXT_RELEASE ? |
| finger[id].area : 0); |
| input_report_abs(input_dev, ABS_MT_POSITION_X, |
| finger[id].x); |
| input_report_abs(input_dev, ABS_MT_POSITION_Y, |
| finger[id].y); |
| input_report_abs(input_dev, ABS_MT_PRESSURE, |
| finger[id].status != MXT_RELEASE ? |
| finger[id].pressure : 0); |
| input_mt_sync(input_dev); |
| |
| if (finger[id].status == MXT_RELEASE) |
| finger[id].status = 0; |
| else |
| finger_num++; |
| } |
| |
| input_report_key(input_dev, BTN_TOUCH, finger_num > 0); |
| |
| if (status != MXT_RELEASE) { |
| input_report_abs(input_dev, ABS_X, finger[single_id].x); |
| input_report_abs(input_dev, ABS_Y, finger[single_id].y); |
| input_report_abs(input_dev, |
| ABS_PRESSURE, finger[single_id].pressure); |
| } |
| |
| input_sync(input_dev); |
| } |
| |
| static void mxt_input_touchevent(struct mxt_data *data, |
| struct mxt_message *message, int id) |
| { |
| struct mxt_finger *finger = data->finger; |
| struct device *dev = &data->client->dev; |
| u8 status = message->message[0]; |
| int x; |
| int y; |
| int area; |
| int pressure; |
| |
| /* Check the touch is present on the screen */ |
| if (!(status & MXT_DETECT)) { |
| if (status & MXT_RELEASE) { |
| dev_dbg(dev, "[%d] released\n", id); |
| |
| finger[id].status = MXT_RELEASE; |
| mxt_input_report(data, id); |
| } |
| return; |
| } |
| |
| /* Check only AMP detection */ |
| if (!(status & (MXT_PRESS | MXT_MOVE))) |
| return; |
| |
| x = (message->message[1] << 4) | ((message->message[3] >> 4) & 0xf); |
| y = (message->message[2] << 4) | ((message->message[3] & 0xf)); |
| if (data->pdata->x_size < 1024) |
| x = x >> 2; |
| if (data->pdata->y_size < 1024) |
| y = y >> 2; |
| |
| area = message->message[4]; |
| pressure = message->message[5]; |
| |
| dev_dbg(dev, "[%d] %s x: %d, y: %d, area: %d\n", id, |
| status & MXT_MOVE ? "moved" : "pressed", |
| x, y, area); |
| |
| finger[id].status = status & MXT_MOVE ? |
| MXT_MOVE : MXT_PRESS; |
| finger[id].x = x; |
| finger[id].y = y; |
| finger[id].area = area; |
| finger[id].pressure = pressure; |
| |
| mxt_input_report(data, id); |
| } |
| |
| static void mxt_handle_key_array(struct mxt_data *data, |
| struct mxt_message *message) |
| { |
| u32 keys_changed; |
| int i; |
| |
| if (!data->pdata->key_codes) { |
| dev_err(&data->client->dev, "keyarray is not supported\n"); |
| return; |
| } |
| |
| data->keyarray_new = message->message[1] | |
| (message->message[2] << 8) | |
| (message->message[3] << 16) | |
| (message->message[4] << 24); |
| |
| keys_changed = data->keyarray_old ^ data->keyarray_new; |
| |
| if (!keys_changed) { |
| dev_dbg(&data->client->dev, "no keys changed\n"); |
| return; |
| } |
| |
| for (i = 0; i < MXT_KEYARRAY_MAX_KEYS; i++) { |
| if (!(keys_changed & (1 << i))) |
| continue; |
| |
| input_report_key(data->input_dev, data->pdata->key_codes[i], |
| (data->keyarray_new & (1 << i))); |
| input_sync(data->input_dev); |
| } |
| |
| data->keyarray_old = data->keyarray_new; |
| } |
| |
| static irqreturn_t mxt_interrupt(int irq, void *dev_id) |
| { |
| struct mxt_data *data = dev_id; |
| struct mxt_message message; |
| struct device *dev = &data->client->dev; |
| int id; |
| u8 reportid; |
| |
| do { |
| if (mxt_read_message(data, &message)) { |
| dev_err(dev, "Failed to read message\n"); |
| goto end; |
| } |
| reportid = message.reportid; |
| |
| if (!reportid) { |
| dev_dbg(dev, "Report id 0 is reserved\n"); |
| continue; |
| } |
| |
| /* check whether report id is part of T9 or T15 */ |
| id = reportid - data->t9_min_reportid; |
| |
| if (reportid >= data->t9_min_reportid && |
| reportid <= data->t9_max_reportid) |
| mxt_input_touchevent(data, &message, id); |
| else if (reportid >= data->t15_min_reportid && |
| reportid <= data->t15_max_reportid) |
| mxt_handle_key_array(data, &message); |
| else |
| mxt_dump_message(dev, &message); |
| } while (reportid != 0xff); |
| |
| end: |
| return IRQ_HANDLED; |
| } |
| |
| static int mxt_check_reg_init(struct mxt_data *data) |
| { |
| const struct mxt_config_info *config_info = data->config_info; |
| struct mxt_object *object; |
| struct device *dev = &data->client->dev; |
| int index = 0; |
| int i, j, config_offset; |
| |
| if (!config_info) { |
| dev_dbg(dev, "No cfg data defined, skipping reg init\n"); |
| return 0; |
| } |
| |
| for (i = 0; i < data->info.object_num; i++) { |
| object = data->object_table + i; |
| |
| if (!mxt_object_writable(object->type)) |
| continue; |
| |
| for (j = 0; j < object->size + 1; j++) { |
| config_offset = index + j; |
| if (config_offset > config_info->config_length) { |
| dev_err(dev, "Not enough config data!\n"); |
| return -EINVAL; |
| } |
| mxt_write_object(data, object->type, j, |
| config_info->config[config_offset]); |
| } |
| index += object->size + 1; |
| } |
| |
| return 0; |
| } |
| |
| static int mxt_make_highchg(struct mxt_data *data) |
| { |
| struct device *dev = &data->client->dev; |
| struct mxt_message message; |
| int count = 10; |
| int error; |
| |
| /* Read dummy message to make high CHG pin */ |
| do { |
| error = mxt_read_message(data, &message); |
| if (error) |
| return error; |
| } while (message.reportid != 0xff && --count); |
| |
| if (!count) { |
| dev_err(dev, "CHG pin isn't cleared\n"); |
| return -EBUSY; |
| } |
| |
| return 0; |
| } |
| |
| static int mxt_get_info(struct mxt_data *data) |
| { |
| struct i2c_client *client = data->client; |
| struct mxt_info *info = &data->info; |
| int error; |
| u8 val; |
| |
| error = mxt_read_reg(client, MXT_FAMILY_ID, &val); |
| if (error) |
| return error; |
| info->family_id = val; |
| |
| error = mxt_read_reg(client, MXT_VARIANT_ID, &val); |
| if (error) |
| return error; |
| info->variant_id = val; |
| |
| error = mxt_read_reg(client, MXT_VERSION, &val); |
| if (error) |
| return error; |
| info->version = val; |
| |
| error = mxt_read_reg(client, MXT_BUILD, &val); |
| if (error) |
| return error; |
| info->build = val; |
| |
| error = mxt_read_reg(client, MXT_OBJECT_NUM, &val); |
| if (error) |
| return error; |
| info->object_num = val; |
| |
| return 0; |
| } |
| |
| static int mxt_get_object_table(struct mxt_data *data) |
| { |
| int error; |
| int i; |
| u16 reg; |
| u8 reportid = 0; |
| u8 buf[MXT_OBJECT_SIZE]; |
| bool found_t38 = false; |
| |
| for (i = 0; i < data->info.object_num; i++) { |
| struct mxt_object *object = data->object_table + i; |
| |
| reg = MXT_OBJECT_START + MXT_OBJECT_SIZE * i; |
| error = mxt_read_object_table(data->client, reg, buf); |
| if (error) |
| return error; |
| |
| object->type = buf[0]; |
| object->start_address = (buf[2] << 8) | buf[1]; |
| object->size = buf[3]; |
| object->instances = buf[4]; |
| object->num_report_ids = buf[5]; |
| |
| if (object->num_report_ids) { |
| reportid += object->num_report_ids * |
| (object->instances + 1); |
| object->max_reportid = reportid; |
| } |
| |
| /* Calculate index for config major version in config array. |
| * Major version is the first byte in object T38. |
| */ |
| if (object->type == MXT_SPT_USERDATA_T38) |
| found_t38 = true; |
| if (!found_t38 && mxt_object_writable(object->type)) |
| data->cfg_version_idx += object->size + 1; |
| } |
| |
| return 0; |
| } |
| |
| static int mxt_search_config_array(struct mxt_data *data, bool version_match) |
| { |
| |
| const struct mxt_platform_data *pdata = data->pdata; |
| const struct mxt_config_info *cfg_info; |
| struct mxt_info *info = &data->info; |
| int i; |
| u8 cfg_version; |
| |
| for (i = 0; i < pdata->config_array_size; i++) { |
| |
| cfg_info = &pdata->config_array[i]; |
| |
| if (!cfg_info->config || !cfg_info->config_length) |
| continue; |
| |
| if (info->family_id == cfg_info->family_id && |
| info->variant_id == cfg_info->variant_id && |
| info->version == cfg_info->version && |
| info->build == cfg_info->build) { |
| |
| cfg_version = cfg_info->config[data->cfg_version_idx]; |
| if (data->curr_cfg_version == cfg_version || |
| !version_match) { |
| data->config_info = cfg_info; |
| return 0; |
| } |
| } |
| } |
| |
| dev_info(&data->client->dev, |
| "Config not found: F: %d, V: %d, FW: %d.%d.%d, CFG: %d\n", |
| info->family_id, info->variant_id, |
| info->version >> 4, info->version & 0xF, info->build, |
| data->curr_cfg_version); |
| return -EINVAL; |
| } |
| |
| static int mxt_get_config(struct mxt_data *data) |
| { |
| const struct mxt_platform_data *pdata = data->pdata; |
| struct device *dev = &data->client->dev; |
| struct mxt_object *object; |
| int error; |
| |
| if (!pdata->config_array || !pdata->config_array_size) { |
| dev_dbg(dev, "No cfg data provided by platform data\n"); |
| return 0; |
| } |
| |
| /* Get current config version */ |
| object = mxt_get_object(data, MXT_SPT_USERDATA_T38); |
| if (!object) { |
| dev_err(dev, "Unable to obtain USERDATA object\n"); |
| return -EINVAL; |
| } |
| |
| error = mxt_read_reg(data->client, object->start_address, |
| &data->curr_cfg_version); |
| if (error) { |
| dev_err(dev, "Unable to read config version\n"); |
| return error; |
| } |
| |
| /* It is possible that the config data on the controller is not |
| * versioned and the version number returns 0. In this case, |
| * find a match without the config version checking. |
| */ |
| error = mxt_search_config_array(data, |
| data->curr_cfg_version != 0 ? true : false); |
| if (error) |
| return error; |
| |
| return 0; |
| } |
| static void mxt_reset_delay(struct mxt_data *data) |
| { |
| struct mxt_info *info = &data->info; |
| |
| switch (info->family_id) { |
| case MXT224_ID: |
| msleep(MXT224_RESET_TIME); |
| break; |
| case MXT224E_ID: |
| msleep(MXT224E_RESET_TIME); |
| break; |
| case MXT1386_ID: |
| msleep(MXT1386_RESET_TIME); |
| break; |
| default: |
| msleep(MXT_RESET_TIME); |
| } |
| } |
| |
| static int mxt_initialize(struct mxt_data *data) |
| { |
| struct i2c_client *client = data->client; |
| struct mxt_info *info = &data->info; |
| int error; |
| int timeout_counter = 0; |
| u8 val; |
| u8 command_register; |
| struct mxt_object *t7_object; |
| struct mxt_object *t9_object; |
| struct mxt_object *t15_object; |
| |
| error = mxt_get_info(data); |
| if (error) |
| return error; |
| |
| data->object_table = kcalloc(info->object_num, |
| sizeof(struct mxt_object), |
| GFP_KERNEL); |
| if (!data->object_table) { |
| dev_err(&client->dev, "Failed to allocate memory\n"); |
| return -ENOMEM; |
| } |
| |
| /* Get object table information */ |
| error = mxt_get_object_table(data); |
| if (error) |
| goto free_object_table; |
| |
| /* Get config data from platform data */ |
| error = mxt_get_config(data); |
| if (error) |
| dev_dbg(&client->dev, "Config info not found.\n"); |
| |
| /* Check register init values */ |
| error = mxt_check_reg_init(data); |
| if (error) |
| goto free_object_table; |
| |
| /* Store T7 and T9 locally, used in suspend/resume operations */ |
| t7_object = mxt_get_object(data, MXT_GEN_POWER_T7); |
| if (!t7_object) { |
| dev_err(&client->dev, "Failed to get T7 object\n"); |
| error = -EINVAL; |
| goto free_object_table; |
| } |
| |
| data->t7_start_addr = t7_object->start_address; |
| error = __mxt_read_reg(client, data->t7_start_addr, |
| T7_DATA_SIZE, data->t7_data); |
| if (error < 0) { |
| dev_err(&client->dev, |
| "Failed to save current power state\n"); |
| goto free_object_table; |
| } |
| error = mxt_read_object(data, MXT_TOUCH_MULTI_T9, MXT_TOUCH_CTRL, |
| &data->t9_ctrl); |
| if (error < 0) { |
| dev_err(&client->dev, "Failed to save current touch object\n"); |
| goto free_object_table; |
| } |
| |
| /* Store T9, T15's min and max report ids */ |
| t9_object = mxt_get_object(data, MXT_TOUCH_MULTI_T9); |
| if (!t9_object) { |
| dev_err(&client->dev, "Failed to get T9 object\n"); |
| error = -EINVAL; |
| goto free_object_table; |
| } |
| data->t9_max_reportid = t9_object->max_reportid; |
| data->t9_min_reportid = t9_object->max_reportid - |
| t9_object->num_report_ids + 1; |
| |
| if (data->pdata->key_codes) { |
| t15_object = mxt_get_object(data, MXT_TOUCH_KEYARRAY_T15); |
| if (!t15_object) |
| dev_dbg(&client->dev, "T15 object is not available\n"); |
| else { |
| data->t15_max_reportid = t15_object->max_reportid; |
| data->t15_min_reportid = t15_object->max_reportid - |
| t15_object->num_report_ids + 1; |
| } |
| } |
| |
| /* Backup to memory */ |
| mxt_write_object(data, MXT_GEN_COMMAND_T6, |
| MXT_COMMAND_BACKUPNV, |
| MXT_BACKUP_VALUE); |
| msleep(MXT_BACKUP_TIME); |
| do { |
| error = mxt_read_object(data, MXT_GEN_COMMAND_T6, |
| MXT_COMMAND_BACKUPNV, |
| &command_register); |
| if (error) |
| goto free_object_table; |
| usleep_range(1000, 2000); |
| } while ((command_register != 0) && (++timeout_counter <= 100)); |
| if (timeout_counter > 100) { |
| dev_err(&client->dev, "No response after backup!\n"); |
| error = -EIO; |
| goto free_object_table; |
| } |
| |
| |
| /* Soft reset */ |
| mxt_write_object(data, MXT_GEN_COMMAND_T6, |
| MXT_COMMAND_RESET, 1); |
| |
| mxt_reset_delay(data); |
| |
| /* Update matrix size at info struct */ |
| error = mxt_read_reg(client, MXT_MATRIX_X_SIZE, &val); |
| if (error) |
| goto free_object_table; |
| info->matrix_xsize = val; |
| |
| error = mxt_read_reg(client, MXT_MATRIX_Y_SIZE, &val); |
| if (error) |
| goto free_object_table; |
| info->matrix_ysize = val; |
| |
| dev_info(&client->dev, |
| "Family ID: %d Variant ID: %d Version: %d Build: %d\n", |
| info->family_id, info->variant_id, info->version, |
| info->build); |
| |
| dev_info(&client->dev, |
| "Matrix X Size: %d Matrix Y Size: %d Object Num: %d\n", |
| info->matrix_xsize, info->matrix_ysize, |
| info->object_num); |
| |
| return 0; |
| |
| free_object_table: |
| kfree(data->object_table); |
| return error; |
| } |
| |
| static ssize_t mxt_object_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| struct mxt_object *object; |
| int count = 0; |
| int i, j; |
| int error; |
| u8 val; |
| |
| for (i = 0; i < data->info.object_num; i++) { |
| object = data->object_table + i; |
| |
| count += snprintf(buf + count, PAGE_SIZE - count, |
| "Object[%d] (Type %d)\n", |
| i + 1, object->type); |
| if (count >= PAGE_SIZE) |
| return PAGE_SIZE - 1; |
| |
| if (!mxt_object_readable(object->type)) { |
| count += snprintf(buf + count, PAGE_SIZE - count, |
| "\n"); |
| if (count >= PAGE_SIZE) |
| return PAGE_SIZE - 1; |
| continue; |
| } |
| |
| for (j = 0; j < object->size + 1; j++) { |
| error = mxt_read_object(data, |
| object->type, j, &val); |
| if (error) |
| return error; |
| |
| count += snprintf(buf + count, PAGE_SIZE - count, |
| "\t[%2d]: %02x (%d)\n", j, val, val); |
| if (count >= PAGE_SIZE) |
| return PAGE_SIZE - 1; |
| } |
| |
| count += snprintf(buf + count, PAGE_SIZE - count, "\n"); |
| if (count >= PAGE_SIZE) |
| return PAGE_SIZE - 1; |
| } |
| |
| return count; |
| } |
| |
| static int mxt_load_fw(struct device *dev, const char *fn) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| struct i2c_client *client = data->client; |
| const struct firmware *fw = NULL; |
| unsigned int frame_size; |
| unsigned int pos = 0; |
| int ret; |
| |
| ret = request_firmware(&fw, fn, dev); |
| if (ret) { |
| dev_err(dev, "Unable to open firmware %s\n", fn); |
| return ret; |
| } |
| |
| /* Change to the bootloader mode */ |
| mxt_write_object(data, MXT_GEN_COMMAND_T6, |
| MXT_COMMAND_RESET, MXT_BOOT_VALUE); |
| |
| mxt_reset_delay(data); |
| |
| /* Change to slave address of bootloader */ |
| if (client->addr == MXT_APP_LOW) |
| client->addr = MXT_BOOT_LOW; |
| else |
| client->addr = MXT_BOOT_HIGH; |
| |
| ret = mxt_check_bootloader(client, MXT_WAITING_BOOTLOAD_CMD); |
| if (ret) |
| goto out; |
| |
| /* Unlock bootloader */ |
| mxt_unlock_bootloader(client); |
| |
| while (pos < fw->size) { |
| ret = mxt_check_bootloader(client, |
| MXT_WAITING_FRAME_DATA); |
| if (ret) |
| goto out; |
| |
| frame_size = ((*(fw->data + pos) << 8) | *(fw->data + pos + 1)); |
| |
| /* We should add 2 at frame size as the the firmware data is not |
| * included the CRC bytes. |
| */ |
| frame_size += 2; |
| |
| /* Write one frame to device */ |
| mxt_fw_write(client, fw->data + pos, frame_size); |
| |
| ret = mxt_check_bootloader(client, |
| MXT_FRAME_CRC_PASS); |
| if (ret) |
| goto out; |
| |
| pos += frame_size; |
| |
| dev_dbg(dev, "Updated %d bytes / %zd bytes\n", pos, fw->size); |
| } |
| |
| out: |
| release_firmware(fw); |
| |
| /* Change to slave address of application */ |
| if (client->addr == MXT_BOOT_LOW) |
| client->addr = MXT_APP_LOW; |
| else |
| client->addr = MXT_APP_HIGH; |
| |
| return ret; |
| } |
| |
| static ssize_t mxt_update_fw_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| int error; |
| |
| disable_irq(data->irq); |
| |
| error = mxt_load_fw(dev, MXT_FW_NAME); |
| if (error) { |
| dev_err(dev, "The firmware update failed(%d)\n", error); |
| count = error; |
| } else { |
| dev_dbg(dev, "The firmware update succeeded\n"); |
| |
| /* Wait for reset */ |
| msleep(MXT_FWRESET_TIME); |
| |
| kfree(data->object_table); |
| data->object_table = NULL; |
| |
| mxt_initialize(data); |
| } |
| |
| enable_irq(data->irq); |
| |
| error = mxt_make_highchg(data); |
| if (error) |
| return error; |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(object, 0444, mxt_object_show, NULL); |
| static DEVICE_ATTR(update_fw, 0664, NULL, mxt_update_fw_store); |
| |
| static struct attribute *mxt_attrs[] = { |
| &dev_attr_object.attr, |
| &dev_attr_update_fw.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group mxt_attr_group = { |
| .attrs = mxt_attrs, |
| }; |
| |
| static int mxt_start(struct mxt_data *data) |
| { |
| int error; |
| |
| /* restore the old power state values and reenable touch */ |
| error = __mxt_write_reg(data->client, data->t7_start_addr, |
| T7_DATA_SIZE, data->t7_data); |
| if (error < 0) { |
| dev_err(&data->client->dev, |
| "failed to restore old power state\n"); |
| return error; |
| } |
| |
| error = mxt_write_object(data, |
| MXT_TOUCH_MULTI_T9, MXT_TOUCH_CTRL, data->t9_ctrl); |
| if (error < 0) { |
| dev_err(&data->client->dev, "failed to restore touch\n"); |
| return error; |
| } |
| |
| return 0; |
| } |
| |
| static int mxt_stop(struct mxt_data *data) |
| { |
| int error; |
| u8 t7_data[T7_DATA_SIZE] = {0}; |
| |
| /* disable touch and configure deep sleep mode */ |
| error = mxt_write_object(data, MXT_TOUCH_MULTI_T9, MXT_TOUCH_CTRL, 0); |
| if (error < 0) { |
| dev_err(&data->client->dev, "failed to disable touch\n"); |
| return error; |
| } |
| |
| error = __mxt_write_reg(data->client, data->t7_start_addr, |
| T7_DATA_SIZE, t7_data); |
| if (error < 0) { |
| dev_err(&data->client->dev, |
| "failed to configure deep sleep mode\n"); |
| return error; |
| } |
| |
| return 0; |
| } |
| |
| static int mxt_input_open(struct input_dev *dev) |
| { |
| struct mxt_data *data = input_get_drvdata(dev); |
| int error; |
| |
| error = mxt_start(data); |
| if (error < 0) { |
| dev_err(&data->client->dev, "mxt_start failed in input_open\n"); |
| return error; |
| } |
| |
| return 0; |
| } |
| |
| static void mxt_input_close(struct input_dev *dev) |
| { |
| struct mxt_data *data = input_get_drvdata(dev); |
| int error; |
| |
| error = mxt_stop(data); |
| if (error < 0) |
| dev_err(&data->client->dev, "mxt_stop failed in input_close\n"); |
| |
| } |
| |
| static int mxt_power_on(struct mxt_data *data, bool on) |
| { |
| int rc; |
| |
| if (on == false) |
| goto power_off; |
| |
| rc = regulator_set_optimum_mode(data->vcc_ana, MXT_ACTIVE_LOAD_UA); |
| if (rc < 0) { |
| dev_err(&data->client->dev, |
| "Regulator vcc_ana set_opt failed rc=%d\n", rc); |
| return rc; |
| } |
| |
| rc = regulator_enable(data->vcc_ana); |
| if (rc) { |
| dev_err(&data->client->dev, |
| "Regulator vcc_ana enable failed rc=%d\n", rc); |
| goto error_reg_en_vcc_ana; |
| } |
| |
| if (data->pdata->digital_pwr_regulator) { |
| rc = regulator_set_optimum_mode(data->vcc_dig, |
| MXT_ACTIVE_LOAD_DIG_UA); |
| if (rc < 0) { |
| dev_err(&data->client->dev, |
| "Regulator vcc_dig set_opt failed rc=%d\n", |
| rc); |
| goto error_reg_opt_vcc_dig; |
| } |
| |
| rc = regulator_enable(data->vcc_dig); |
| if (rc) { |
| dev_err(&data->client->dev, |
| "Regulator vcc_dig enable failed rc=%d\n", rc); |
| goto error_reg_en_vcc_dig; |
| } |
| } |
| |
| if (data->pdata->i2c_pull_up) { |
| rc = regulator_set_optimum_mode(data->vcc_i2c, MXT_I2C_LOAD_UA); |
| if (rc < 0) { |
| dev_err(&data->client->dev, |
| "Regulator vcc_i2c set_opt failed rc=%d\n", rc); |
| goto error_reg_opt_i2c; |
| } |
| |
| rc = regulator_enable(data->vcc_i2c); |
| if (rc) { |
| dev_err(&data->client->dev, |
| "Regulator vcc_i2c enable failed rc=%d\n", rc); |
| goto error_reg_en_vcc_i2c; |
| } |
| } |
| |
| msleep(130); |
| |
| return 0; |
| |
| error_reg_en_vcc_i2c: |
| if (data->pdata->i2c_pull_up) |
| regulator_set_optimum_mode(data->vcc_i2c, 0); |
| error_reg_opt_i2c: |
| if (data->pdata->digital_pwr_regulator) |
| regulator_disable(data->vcc_dig); |
| error_reg_en_vcc_dig: |
| if (data->pdata->digital_pwr_regulator) |
| regulator_set_optimum_mode(data->vcc_dig, 0); |
| error_reg_opt_vcc_dig: |
| regulator_disable(data->vcc_ana); |
| error_reg_en_vcc_ana: |
| regulator_set_optimum_mode(data->vcc_ana, 0); |
| return rc; |
| |
| power_off: |
| regulator_set_optimum_mode(data->vcc_ana, 0); |
| regulator_disable(data->vcc_ana); |
| if (data->pdata->digital_pwr_regulator) { |
| regulator_set_optimum_mode(data->vcc_dig, 0); |
| regulator_disable(data->vcc_dig); |
| } |
| if (data->pdata->i2c_pull_up) { |
| regulator_set_optimum_mode(data->vcc_i2c, 0); |
| regulator_disable(data->vcc_i2c); |
| } |
| msleep(50); |
| return 0; |
| } |
| |
| static int mxt_regulator_configure(struct mxt_data *data, bool on) |
| { |
| int rc; |
| |
| if (on == false) |
| goto hw_shutdown; |
| |
| data->vcc_ana = regulator_get(&data->client->dev, "vdd_ana"); |
| if (IS_ERR(data->vcc_ana)) { |
| rc = PTR_ERR(data->vcc_ana); |
| dev_err(&data->client->dev, |
| "Regulator get failed vcc_ana rc=%d\n", rc); |
| return rc; |
| } |
| |
| if (regulator_count_voltages(data->vcc_ana) > 0) { |
| rc = regulator_set_voltage(data->vcc_ana, MXT_VTG_MIN_UV, |
| MXT_VTG_MAX_UV); |
| if (rc) { |
| dev_err(&data->client->dev, |
| "regulator set_vtg failed rc=%d\n", rc); |
| goto error_set_vtg_vcc_ana; |
| } |
| } |
| if (data->pdata->digital_pwr_regulator) { |
| data->vcc_dig = regulator_get(&data->client->dev, "vdd_dig"); |
| if (IS_ERR(data->vcc_dig)) { |
| rc = PTR_ERR(data->vcc_dig); |
| dev_err(&data->client->dev, |
| "Regulator get dig failed rc=%d\n", rc); |
| goto error_get_vtg_vcc_dig; |
| } |
| |
| if (regulator_count_voltages(data->vcc_dig) > 0) { |
| rc = regulator_set_voltage(data->vcc_dig, |
| MXT_VTG_DIG_MIN_UV, MXT_VTG_DIG_MAX_UV); |
| if (rc) { |
| dev_err(&data->client->dev, |
| "regulator set_vtg failed rc=%d\n", rc); |
| goto error_set_vtg_vcc_dig; |
| } |
| } |
| } |
| if (data->pdata->i2c_pull_up) { |
| data->vcc_i2c = regulator_get(&data->client->dev, "vcc_i2c"); |
| if (IS_ERR(data->vcc_i2c)) { |
| rc = PTR_ERR(data->vcc_i2c); |
| dev_err(&data->client->dev, |
| "Regulator get failed rc=%d\n", rc); |
| goto error_get_vtg_i2c; |
| } |
| if (regulator_count_voltages(data->vcc_i2c) > 0) { |
| rc = regulator_set_voltage(data->vcc_i2c, |
| MXT_I2C_VTG_MIN_UV, MXT_I2C_VTG_MAX_UV); |
| if (rc) { |
| dev_err(&data->client->dev, |
| "regulator set_vtg failed rc=%d\n", rc); |
| goto error_set_vtg_i2c; |
| } |
| } |
| } |
| |
| return 0; |
| |
| error_set_vtg_i2c: |
| regulator_put(data->vcc_i2c); |
| error_get_vtg_i2c: |
| if (data->pdata->digital_pwr_regulator) |
| if (regulator_count_voltages(data->vcc_dig) > 0) |
| regulator_set_voltage(data->vcc_dig, 0, |
| MXT_VTG_DIG_MAX_UV); |
| error_set_vtg_vcc_dig: |
| if (data->pdata->digital_pwr_regulator) |
| regulator_put(data->vcc_dig); |
| error_get_vtg_vcc_dig: |
| if (regulator_count_voltages(data->vcc_ana) > 0) |
| regulator_set_voltage(data->vcc_ana, 0, MXT_VTG_MAX_UV); |
| error_set_vtg_vcc_ana: |
| regulator_put(data->vcc_ana); |
| return rc; |
| |
| hw_shutdown: |
| if (regulator_count_voltages(data->vcc_ana) > 0) |
| regulator_set_voltage(data->vcc_ana, 0, MXT_VTG_MAX_UV); |
| regulator_put(data->vcc_ana); |
| if (data->pdata->digital_pwr_regulator) { |
| if (regulator_count_voltages(data->vcc_dig) > 0) |
| regulator_set_voltage(data->vcc_dig, 0, |
| MXT_VTG_DIG_MAX_UV); |
| regulator_put(data->vcc_dig); |
| } |
| if (data->pdata->i2c_pull_up) { |
| if (regulator_count_voltages(data->vcc_i2c) > 0) |
| regulator_set_voltage(data->vcc_i2c, 0, |
| MXT_I2C_VTG_MAX_UV); |
| regulator_put(data->vcc_i2c); |
| } |
| return 0; |
| } |
| |
| #ifdef CONFIG_PM |
| static int mxt_regulator_lpm(struct mxt_data *data, bool on) |
| { |
| |
| int rc; |
| |
| if (on == false) |
| goto regulator_hpm; |
| |
| rc = regulator_set_optimum_mode(data->vcc_ana, MXT_LPM_LOAD_UA); |
| if (rc < 0) { |
| dev_err(&data->client->dev, |
| "Regulator vcc_ana set_opt failed rc=%d\n", rc); |
| goto fail_regulator_lpm; |
| } |
| |
| if (data->pdata->digital_pwr_regulator) { |
| rc = regulator_set_optimum_mode(data->vcc_dig, |
| MXT_LPM_LOAD_DIG_UA); |
| if (rc < 0) { |
| dev_err(&data->client->dev, |
| "Regulator vcc_dig set_opt failed rc=%d\n", rc); |
| goto fail_regulator_lpm; |
| } |
| } |
| |
| if (data->pdata->i2c_pull_up) { |
| rc = regulator_set_optimum_mode(data->vcc_i2c, |
| MXT_I2C_LPM_LOAD_UA); |
| if (rc < 0) { |
| dev_err(&data->client->dev, |
| "Regulator vcc_i2c set_opt failed rc=%d\n", rc); |
| goto fail_regulator_lpm; |
| } |
| } |
| |
| return 0; |
| |
| regulator_hpm: |
| |
| rc = regulator_set_optimum_mode(data->vcc_ana, MXT_ACTIVE_LOAD_UA); |
| if (rc < 0) { |
| dev_err(&data->client->dev, |
| "Regulator vcc_ana set_opt failed rc=%d\n", rc); |
| goto fail_regulator_hpm; |
| } |
| |
| if (data->pdata->digital_pwr_regulator) { |
| rc = regulator_set_optimum_mode(data->vcc_dig, |
| MXT_ACTIVE_LOAD_DIG_UA); |
| if (rc < 0) { |
| dev_err(&data->client->dev, |
| "Regulator vcc_dig set_opt failed rc=%d\n", rc); |
| goto fail_regulator_hpm; |
| } |
| } |
| |
| if (data->pdata->i2c_pull_up) { |
| rc = regulator_set_optimum_mode(data->vcc_i2c, MXT_I2C_LOAD_UA); |
| if (rc < 0) { |
| dev_err(&data->client->dev, |
| "Regulator vcc_i2c set_opt failed rc=%d\n", rc); |
| goto fail_regulator_hpm; |
| } |
| } |
| |
| return 0; |
| |
| fail_regulator_lpm: |
| regulator_set_optimum_mode(data->vcc_ana, MXT_ACTIVE_LOAD_UA); |
| if (data->pdata->digital_pwr_regulator) |
| regulator_set_optimum_mode(data->vcc_dig, |
| MXT_ACTIVE_LOAD_DIG_UA); |
| if (data->pdata->i2c_pull_up) |
| regulator_set_optimum_mode(data->vcc_i2c, MXT_I2C_LOAD_UA); |
| |
| return rc; |
| |
| fail_regulator_hpm: |
| regulator_set_optimum_mode(data->vcc_ana, MXT_LPM_LOAD_UA); |
| if (data->pdata->digital_pwr_regulator) |
| regulator_set_optimum_mode(data->vcc_dig, MXT_LPM_LOAD_DIG_UA); |
| if (data->pdata->i2c_pull_up) |
| regulator_set_optimum_mode(data->vcc_i2c, MXT_I2C_LPM_LOAD_UA); |
| |
| return rc; |
| } |
| |
| static int mxt_suspend(struct device *dev) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct mxt_data *data = i2c_get_clientdata(client); |
| struct input_dev *input_dev = data->input_dev; |
| int error; |
| |
| mutex_lock(&input_dev->mutex); |
| |
| if (input_dev->users) { |
| error = mxt_stop(data); |
| if (error < 0) { |
| dev_err(dev, "mxt_stop failed in suspend\n"); |
| mutex_unlock(&input_dev->mutex); |
| return error; |
| } |
| |
| } |
| |
| mutex_unlock(&input_dev->mutex); |
| |
| /* put regulators in low power mode */ |
| error = mxt_regulator_lpm(data, true); |
| if (error < 0) { |
| dev_err(dev, "failed to enter low power mode\n"); |
| return error; |
| } |
| |
| return 0; |
| } |
| |
| static int mxt_resume(struct device *dev) |
| { |
| struct i2c_client *client = to_i2c_client(dev); |
| struct mxt_data *data = i2c_get_clientdata(client); |
| struct input_dev *input_dev = data->input_dev; |
| int error; |
| |
| /* put regulators in high power mode */ |
| error = mxt_regulator_lpm(data, false); |
| if (error < 0) { |
| dev_err(dev, "failed to enter high power mode\n"); |
| return error; |
| } |
| |
| mutex_lock(&input_dev->mutex); |
| |
| if (input_dev->users) { |
| error = mxt_start(data); |
| if (error < 0) { |
| dev_err(dev, "mxt_start failed in resume\n"); |
| mutex_unlock(&input_dev->mutex); |
| return error; |
| } |
| } |
| |
| mutex_unlock(&input_dev->mutex); |
| |
| return 0; |
| } |
| |
| #if defined(CONFIG_HAS_EARLYSUSPEND) |
| static void mxt_early_suspend(struct early_suspend *h) |
| { |
| struct mxt_data *data = container_of(h, struct mxt_data, early_suspend); |
| |
| mxt_suspend(&data->client->dev); |
| } |
| |
| static void mxt_late_resume(struct early_suspend *h) |
| { |
| struct mxt_data *data = container_of(h, struct mxt_data, early_suspend); |
| |
| mxt_resume(&data->client->dev); |
| } |
| #endif |
| |
| static const struct dev_pm_ops mxt_pm_ops = { |
| #ifndef CONFIG_HAS_EARLYSUSPEND |
| .suspend = mxt_suspend, |
| .resume = mxt_resume, |
| #endif |
| }; |
| #endif |
| |
| static int __devinit mxt_probe(struct i2c_client *client, |
| const struct i2c_device_id *id) |
| { |
| const struct mxt_platform_data *pdata = client->dev.platform_data; |
| struct mxt_data *data; |
| struct input_dev *input_dev; |
| int error, i; |
| |
| if (!pdata) |
| return -EINVAL; |
| |
| data = kzalloc(sizeof(struct mxt_data), GFP_KERNEL); |
| input_dev = input_allocate_device(); |
| if (!data || !input_dev) { |
| dev_err(&client->dev, "Failed to allocate memory\n"); |
| error = -ENOMEM; |
| goto err_free_mem; |
| } |
| |
| input_dev->name = "Atmel maXTouch Touchscreen"; |
| input_dev->id.bustype = BUS_I2C; |
| input_dev->dev.parent = &client->dev; |
| input_dev->open = mxt_input_open; |
| input_dev->close = mxt_input_close; |
| |
| data->client = client; |
| data->input_dev = input_dev; |
| data->pdata = pdata; |
| data->irq = client->irq; |
| |
| __set_bit(EV_ABS, input_dev->evbit); |
| __set_bit(EV_KEY, input_dev->evbit); |
| __set_bit(BTN_TOUCH, input_dev->keybit); |
| |
| /* For single touch */ |
| input_set_abs_params(input_dev, ABS_X, |
| 0, data->pdata->x_size, 0, 0); |
| input_set_abs_params(input_dev, ABS_Y, |
| 0, data->pdata->y_size, 0, 0); |
| input_set_abs_params(input_dev, ABS_PRESSURE, |
| 0, 255, 0, 0); |
| |
| /* For multi touch */ |
| input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, |
| 0, MXT_MAX_AREA, 0, 0); |
| input_set_abs_params(input_dev, ABS_MT_POSITION_X, |
| 0, data->pdata->x_size, 0, 0); |
| input_set_abs_params(input_dev, ABS_MT_POSITION_Y, |
| 0, data->pdata->y_size, 0, 0); |
| input_set_abs_params(input_dev, ABS_MT_PRESSURE, |
| 0, 255, 0, 0); |
| |
| /* set key array supported keys */ |
| if (pdata->key_codes) { |
| for (i = 0; i < MXT_KEYARRAY_MAX_KEYS; i++) { |
| if (pdata->key_codes[i]) |
| input_set_capability(input_dev, EV_KEY, |
| pdata->key_codes[i]); |
| } |
| } |
| |
| input_set_drvdata(input_dev, data); |
| i2c_set_clientdata(client, data); |
| |
| if (pdata->init_hw) |
| error = pdata->init_hw(true); |
| else |
| error = mxt_regulator_configure(data, true); |
| if (error) { |
| dev_err(&client->dev, "Failed to intialize hardware\n"); |
| goto err_free_mem; |
| } |
| |
| if (pdata->power_on) |
| error = pdata->power_on(true); |
| else |
| error = mxt_power_on(data, true); |
| if (error) { |
| dev_err(&client->dev, "Failed to power on hardware\n"); |
| goto err_regulator_on; |
| } |
| |
| if (gpio_is_valid(pdata->irq_gpio)) { |
| /* configure touchscreen irq gpio */ |
| error = gpio_request(pdata->irq_gpio, |
| "mxt_irq_gpio"); |
| if (error) { |
| pr_err("%s: unable to request gpio [%d]\n", __func__, |
| pdata->irq_gpio); |
| goto err_power_on; |
| } |
| error = gpio_direction_input(pdata->irq_gpio); |
| if (error) { |
| pr_err("%s: unable to set_direction for gpio [%d]\n", |
| __func__, pdata->irq_gpio); |
| goto err_irq_gpio_req; |
| } |
| } |
| |
| if (gpio_is_valid(pdata->reset_gpio)) { |
| /* configure touchscreen reset out gpio */ |
| error = gpio_request(pdata->reset_gpio, |
| "mxt_reset_gpio"); |
| if (error) { |
| pr_err("%s: unable to request reset gpio %d\n", |
| __func__, pdata->reset_gpio); |
| goto err_irq_gpio_req; |
| } |
| |
| error = gpio_direction_output( |
| pdata->reset_gpio, 1); |
| if (error) { |
| pr_err("%s: unable to set direction for gpio %d\n", |
| __func__, pdata->reset_gpio); |
| goto err_reset_gpio_req; |
| } |
| } |
| |
| mxt_reset_delay(data); |
| |
| error = mxt_initialize(data); |
| if (error) |
| goto err_reset_gpio_req; |
| |
| error = request_threaded_irq(client->irq, NULL, mxt_interrupt, |
| pdata->irqflags, client->dev.driver->name, data); |
| if (error) { |
| dev_err(&client->dev, "Failed to register interrupt\n"); |
| goto err_free_object; |
| } |
| |
| error = mxt_make_highchg(data); |
| if (error) |
| goto err_free_irq; |
| |
| error = input_register_device(input_dev); |
| if (error) |
| goto err_free_irq; |
| |
| error = sysfs_create_group(&client->dev.kobj, &mxt_attr_group); |
| if (error) |
| goto err_unregister_device; |
| |
| #if defined(CONFIG_HAS_EARLYSUSPEND) |
| data->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + |
| MXT_SUSPEND_LEVEL; |
| data->early_suspend.suspend = mxt_early_suspend; |
| data->early_suspend.resume = mxt_late_resume; |
| register_early_suspend(&data->early_suspend); |
| #endif |
| |
| return 0; |
| |
| err_unregister_device: |
| input_unregister_device(input_dev); |
| input_dev = NULL; |
| err_free_irq: |
| free_irq(client->irq, data); |
| err_free_object: |
| kfree(data->object_table); |
| err_reset_gpio_req: |
| if (gpio_is_valid(pdata->reset_gpio)) |
| gpio_free(pdata->reset_gpio); |
| err_irq_gpio_req: |
| if (gpio_is_valid(pdata->irq_gpio)) |
| gpio_free(pdata->irq_gpio); |
| err_power_on: |
| if (pdata->power_on) |
| pdata->power_on(false); |
| else |
| mxt_power_on(data, false); |
| err_regulator_on: |
| if (pdata->init_hw) |
| pdata->init_hw(false); |
| else |
| mxt_regulator_configure(data, false); |
| err_free_mem: |
| input_free_device(input_dev); |
| kfree(data); |
| return error; |
| } |
| |
| static int __devexit mxt_remove(struct i2c_client *client) |
| { |
| struct mxt_data *data = i2c_get_clientdata(client); |
| |
| sysfs_remove_group(&client->dev.kobj, &mxt_attr_group); |
| free_irq(data->irq, data); |
| input_unregister_device(data->input_dev); |
| #if defined(CONFIG_HAS_EARLYSUSPEND) |
| unregister_early_suspend(&data->early_suspend); |
| #endif |
| |
| if (data->pdata->power_on) |
| data->pdata->power_on(false); |
| else |
| mxt_power_on(data, false); |
| |
| if (data->pdata->init_hw) |
| data->pdata->init_hw(false); |
| else |
| mxt_regulator_configure(data, false); |
| |
| if (gpio_is_valid(data->pdata->reset_gpio)) |
| gpio_free(data->pdata->reset_gpio); |
| |
| if (gpio_is_valid(data->pdata->irq_gpio)) |
| gpio_free(data->pdata->irq_gpio); |
| |
| kfree(data->object_table); |
| kfree(data); |
| |
| return 0; |
| } |
| |
| static const struct i2c_device_id mxt_id[] = { |
| { "qt602240_ts", 0 }, |
| { "atmel_mxt_ts", 0 }, |
| { "mXT224", 0 }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(i2c, mxt_id); |
| |
| static struct i2c_driver mxt_driver = { |
| .driver = { |
| .name = "atmel_mxt_ts", |
| .owner = THIS_MODULE, |
| #ifdef CONFIG_PM |
| .pm = &mxt_pm_ops, |
| #endif |
| }, |
| .probe = mxt_probe, |
| .remove = __devexit_p(mxt_remove), |
| .id_table = mxt_id, |
| }; |
| |
| static int __init mxt_init(void) |
| { |
| return i2c_add_driver(&mxt_driver); |
| } |
| |
| static void __exit mxt_exit(void) |
| { |
| i2c_del_driver(&mxt_driver); |
| } |
| |
| module_init(mxt_init); |
| module_exit(mxt_exit); |
| |
| /* Module information */ |
| MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); |
| MODULE_DESCRIPTION("Atmel maXTouch Touchscreen driver"); |
| MODULE_LICENSE("GPL"); |