| /* |
| * Atmel maXTouch Touchscreen driver |
| * |
| * Copyright (C) 2010 Samsung Electronics Co.Ltd |
| * Author: Joonyoung Shim <jy0922.shim@samsung.com> |
| * Copyright (c) 2011-2014, The Linux Foundation. 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/mt.h> |
| #include <linux/interrupt.h> |
| #include <linux/slab.h> |
| #include <linux/gpio.h> |
| #include <linux/debugfs.h> |
| #include <linux/seq_file.h> |
| #include <linux/regulator/consumer.h> |
| #include <linux/string.h> |
| #include <linux/of_gpio.h> |
| |
| #if defined(CONFIG_FB) |
| #include <linux/notifier.h> |
| #include <linux/fb.h> |
| |
| #elif defined(CONFIG_HAS_EARLYSUSPEND) |
| #include <linux/earlysuspend.h> |
| /* Early-suspend level */ |
| #define MXT_SUSPEND_LEVEL 1 |
| #endif |
| |
| #if defined(CONFIG_SECURE_TOUCH) |
| #include <linux/completion.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/errno.h> |
| #include <asm/system.h> |
| #include <linux/atomic.h> |
| #endif |
| |
| /* Family ID */ |
| #define MXT224_ID 0x80 |
| #define MXT224E_ID 0x81 |
| #define MXT336S_ID 0x82 |
| #define MXT1386_ID 0xA0 |
| #define MXT1664S_ID 0xA2 |
| |
| /* Version */ |
| #define MXT_VER_20 20 |
| #define MXT_VER_21 21 |
| #define MXT_VER_22 22 |
| |
| /* I2C slave address pairs */ |
| struct mxt_address_pair { |
| int bootloader; |
| int application; |
| }; |
| |
| static const struct mxt_address_pair mxt_slave_addresses[] = { |
| { 0x24, 0x4a }, |
| { 0x25, 0x4b }, |
| { 0x25, 0x4b }, |
| { 0x26, 0x4c }, |
| { 0x27, 0x4d }, |
| { 0x34, 0x5a }, |
| { 0x35, 0x5b }, |
| { 0 }, |
| }; |
| |
| enum mxt_device_state { INIT, APPMODE, BOOTLOADER }; |
| |
| /* Firmware */ |
| #define MXT_FW_NAME "maxtouch.fw" |
| |
| /* Firmware frame size including frame data and CRC */ |
| #define MXT_SINGLE_FW_MAX_FRAME_SIZE 278 |
| #define MXT_CHIPSET_FW_MAX_FRAME_SIZE 534 |
| |
| /* 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_PROCG_NOISE_T62 62 |
| #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_PROCI_ADAPTIVETHRESHOLD_T55 55 |
| #define MXT_PROCI_SHIELDLESS_T56 56 |
| #define MXT_PROCI_EXTRATSDATA_T57 57 |
| #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 |
| #define MXT_SPT_EXTRANOISESUPCTRLS_T58 58 |
| #define MXT_SPT_TIMER_T61 61 |
| |
| /* 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 */ |
| |
| /* Software reset delay */ |
| #define MXT224_RESET_TIME 64 /* msec */ |
| #define MXT224E_RESET_TIME 21 /* msec */ |
| #define MXT336S_RESET_TIME 25 /* msec */ |
| #define MXT1386_RESET_TIME 250 /* msec */ |
| #define MXT1386E_RESET_TIME 229 /* msec */ |
| #define MXT1664S_RESET_TIME 280 /* msec */ |
| #define MXT_RESET_TIME 250 /* msec */ |
| #define MXT_RESET_NOCHGREAD 400 /* msec */ |
| |
| /* Power on delay */ |
| #define MXT224_POWER_ON_TIME 40 /* msec */ |
| #define MXT224E_POWER_ON_TIME 21 /* msec */ |
| #define MXT336S_POWER_ON_TIME 25 /* msec */ |
| #define MXT1386_POWER_ON_TIME 90 /* msec */ |
| #define MXT1386E_POWER_ON_TIME 81 /* msec */ |
| #define MXT1664S_POWER_ON_TIME 65 /* msec */ |
| #define MXT_POWER_ON_TIME 100 /* msec */ |
| |
| #define MXT_FWRESET_TIME 1000 /* 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 |
| #define MXT_BOOT_EXTENDED_ID (1 << 5) |
| #define MXT_BOOT_ID_MASK 0x1f |
| |
| /* 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) |
| |
| /* Touch suppression */ |
| #define MXT_TCHSUP_ACTIVE (1 << 0) |
| |
| /* 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 |
| #define MXT_CFG_VERSION_LEN 3 |
| #define MXT_CFG_VERSION_EQUAL 0 |
| #define MXT_CFG_VERSION_LESS 1 |
| #define MXT_CFG_VERSION_GREATER 2 |
| |
| #define MXT_COORDS_ARR_SIZE 4 |
| |
| #define MXT_DEBUGFS_DIR "atmel_mxt_ts" |
| #define MXT_DEBUGFS_FILE "object" |
| |
| 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; |
| enum mxt_device_state state; |
| 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; |
| struct mxt_address_pair addr_pair; |
| #if defined(CONFIG_FB) |
| struct notifier_block fb_notif; |
| #elif defined(CONFIG_HAS_EARLYSUSPEND) |
| struct early_suspend early_suspend; |
| #endif |
| |
| u8 t7_data[T7_DATA_SIZE]; |
| u16 t7_start_addr; |
| u32 keyarray_old; |
| u32 keyarray_new; |
| u8 t9_max_reportid; |
| u8 t9_min_reportid; |
| u8 t15_max_reportid; |
| u8 t15_min_reportid; |
| u8 t42_max_reportid; |
| u8 t42_min_reportid; |
| u8 cfg_version[MXT_CFG_VERSION_LEN]; |
| int cfg_version_idx; |
| int t38_start_addr; |
| bool update_cfg; |
| const char *fw_name; |
| bool no_force_update; |
| bool lpm_support; |
| bool dev_sleep; |
| |
| #if defined(CONFIG_SECURE_TOUCH) |
| atomic_t st_enabled; |
| atomic_t st_pending_irqs; |
| struct completion st_powerdown; |
| #endif |
| }; |
| |
| static struct dentry *debug_base; |
| |
| 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_PROCG_NOISE_T62: |
| 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_PROCI_SHIELDLESS_T56: |
| case MXT_PROCI_EXTRATSDATA_T57: |
| 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: |
| case MXT_SPT_EXTRANOISESUPCTRLS_T58: |
| case MXT_SPT_TIMER_T61: |
| case MXT_PROCI_ADAPTIVETHRESHOLD_T55: |
| 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_PROCG_NOISE_T62: |
| 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_PROCI_SHIELDLESS_T56: |
| case MXT_PROCI_EXTRATSDATA_T57: |
| 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: |
| case MXT_SPT_EXTRANOISESUPCTRLS_T58: |
| case MXT_SPT_TIMER_T61: |
| case MXT_PROCI_ADAPTIVETHRESHOLD_T55: |
| 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_lookup_bootloader_address(struct mxt_data *data) |
| { |
| int i; |
| |
| for (i = 0; mxt_slave_addresses[i].application != 0; i++) { |
| if (mxt_slave_addresses[i].application == |
| data->client->addr) { |
| data->addr_pair.bootloader = |
| mxt_slave_addresses[i].bootloader; |
| return 0; |
| } |
| } |
| |
| dev_err(&data->client->dev, "Address 0x%02x not found in address table", |
| data->client->addr); |
| return -EINVAL; |
| |
| }; |
| |
| static int mxt_switch_to_bootloader_address(struct mxt_data *data) |
| { |
| struct i2c_client *client = data->client; |
| |
| if (data->state == BOOTLOADER) { |
| dev_err(&client->dev, "Already in BOOTLOADER state\n"); |
| return -EINVAL; |
| } |
| |
| dev_info(&client->dev, "Changing to bootloader address: 0x%02x -> 0x%02x", |
| client->addr, data->addr_pair.bootloader); |
| |
| client->addr = data->addr_pair.bootloader; |
| data->state = BOOTLOADER; |
| return 0; |
| } |
| |
| static int mxt_switch_to_appmode_address(struct mxt_data *data) |
| { |
| struct i2c_client *client = data->client; |
| |
| if (data->state == APPMODE) { |
| dev_err(&client->dev, "Already in APPMODE state\n"); |
| return -EINVAL; |
| } |
| |
| dev_info(&client->dev, "Changing to application mode address: " \ |
| "0x%02x -> 0x%02x", client->addr, |
| data->addr_pair.application); |
| |
| client->addr = data->addr_pair.application; |
| data->state = APPMODE; |
| return 0; |
| } |
| |
| static int mxt_get_bootloader_version(struct i2c_client *client, u8 val) |
| { |
| u8 buf[3]; |
| |
| if (val | MXT_BOOT_EXTENDED_ID) { |
| dev_dbg(&client->dev, |
| "Retrieving extended mode ID information"); |
| |
| if (i2c_master_recv(client, &buf[0], 3) != 3) { |
| dev_err(&client->dev, "%s: i2c recv failed\n", |
| __func__); |
| return -EIO; |
| } |
| |
| dev_info(&client->dev, "Bootloader ID:%d Version:%d", |
| buf[1], buf[2]); |
| |
| return buf[0]; |
| } else { |
| dev_info(&client->dev, "Bootloader ID:%d", |
| val & MXT_BOOT_ID_MASK); |
| |
| return val; |
| } |
| } |
| |
| static int mxt_get_bootloader_id(struct i2c_client *client) |
| { |
| u8 val; |
| u8 buf[3]; |
| |
| if (i2c_master_recv(client, &val, 1) != 1) { |
| dev_err(&client->dev, "%s: i2c recv failed\n", __func__); |
| return -EIO; |
| } |
| |
| if (val | MXT_BOOT_EXTENDED_ID) { |
| if (i2c_master_recv(client, &buf[0], 3) != 3) { |
| dev_err(&client->dev, "%s: i2c recv failed\n", |
| __func__); |
| return -EIO; |
| } |
| return buf[1]; |
| } else { |
| dev_info(&client->dev, "Bootloader ID:%d", |
| val & MXT_BOOT_ID_MASK); |
| |
| return val & MXT_BOOT_ID_MASK; |
| } |
| } |
| |
| 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: |
| val = mxt_get_bootloader_version(client, val); |
| val &= ~MXT_BOOT_STATUS_MASK; |
| break; |
| case MXT_WAITING_FRAME_DATA: |
| case MXT_APP_CRC_FAIL: |
| val &= ~MXT_BOOT_STATUS_MASK; |
| break; |
| case MXT_FRAME_CRC_PASS: |
| if (val == MXT_FRAME_CRC_CHECK) |
| goto recheck; |
| if (val == MXT_FRAME_CRC_FAIL) { |
| dev_err(&client->dev, "Bootloader CRC fail\n"); |
| return -EINVAL; |
| } |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| if (val != state) { |
| dev_err(&client->dev, "Invalid bootloader mode state %X\n", |
| val); |
| 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_get_object_address(struct device *dev, u8 type) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| u8 obj_num, obj_buf[MXT_OBJECT_SIZE]; |
| u16 reg; |
| int i, error; |
| |
| error = mxt_read_reg(data->client, MXT_OBJECT_NUM, &obj_num); |
| |
| if (error) { |
| dev_err(dev, "reading number of objects failed\n"); |
| return -EINVAL; |
| } |
| |
| for (i = 0; i < obj_num; i++) { |
| reg = MXT_OBJECT_START + MXT_OBJECT_SIZE * i; |
| error = mxt_read_object_table(data->client, |
| reg, obj_buf); |
| if (error) |
| return error; |
| |
| if (obj_buf[0] == type) |
| return obj_buf[2] << 8 | obj_buf[1]; |
| } |
| /* If control reaches here, i = obj_num and object not found */ |
| dev_err(dev, "Requested object %d not found.\n", type); |
| return -EINVAL; |
| |
| } |
| |
| 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_mt_slot(input_dev, id); |
| /* Firmware reports min/max values when the touch is |
| * outside screen area. Send a release event in |
| * such cases to avoid unwanted touches. |
| */ |
| if (finger[id].x <= data->pdata->panel_minx || |
| finger[id].x >= data->pdata->panel_maxx || |
| finger[id].y <= data->pdata->panel_miny || |
| finger[id].y >= data->pdata->panel_maxy) { |
| finger[id].status = MXT_RELEASE; |
| } |
| |
| input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, |
| finger[id].status != MXT_RELEASE); |
| |
| if (finger[id].status != MXT_RELEASE) { |
| finger_num++; |
| input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, |
| finger[id].area); |
| 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].pressure); |
| } else { |
| finger[id].status = 0; |
| } |
| } |
| |
| input_report_key(input_dev, BTN_TOUCH, finger_num > 0); |
| |
| if (finger[single_id].x <= data->pdata->panel_minx || |
| finger[single_id].x >= data->pdata->panel_maxx || |
| finger[single_id].y <= data->pdata->panel_miny || |
| finger[single_id].y >= data->pdata->panel_maxy) { |
| status = MXT_RELEASE; |
| } |
| |
| if ((status != MXT_RELEASE) && status) { |
| 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_release_all(struct mxt_data *data) |
| { |
| int id; |
| |
| for (id = 0; id < MXT_MAX_FINGER; id++) |
| if (data->finger[id].status) |
| data->finger[id].status = MXT_RELEASE; |
| |
| mxt_input_report(data, 0); |
| } |
| |
| 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; |
| |
| if (status & MXT_SUPPRESS) { |
| mxt_release_all(data); |
| return; |
| } |
| /* 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->panel_maxx < 1024) |
| x = x >> 2; |
| if (data->pdata->panel_maxy < 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 void mxt_handle_touch_suppression(struct mxt_data *data, u8 status) |
| { |
| dev_dbg(&data->client->dev, "touch suppression\n"); |
| /* release all touches */ |
| if (status & MXT_TCHSUP_ACTIVE) |
| mxt_release_all(data); |
| } |
| |
| #if defined(CONFIG_SECURE_TOUCH) |
| static void mxt_secure_touch_notify(struct mxt_data *data) |
| { |
| sysfs_notify(&data->client->dev.kobj, NULL, "secure_touch"); |
| } |
| |
| static irqreturn_t mxt_filter_interrupt(struct mxt_data *data) |
| { |
| if (atomic_read(&data->st_enabled)) { |
| if (atomic_cmpxchg(&data->st_pending_irqs, 0, 1) == 0) |
| mxt_secure_touch_notify(data); |
| return IRQ_HANDLED; |
| } |
| return IRQ_NONE; |
| } |
| #else |
| static irqreturn_t mxt_filter_interrupt(struct mxt_data *data) |
| { |
| return IRQ_NONE; |
| } |
| #endif |
| |
| 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; |
| |
| if (data->state != APPMODE) { |
| dev_err(dev, "Ignoring IRQ - not in APPMODE state\n"); |
| return IRQ_HANDLED; |
| } |
| |
| if (IRQ_HANDLED == mxt_filter_interrupt(data)) |
| goto end; |
| |
| 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; |
| } |
| |
| id = reportid - data->t9_min_reportid; |
| |
| /* check whether report id is part of T9, T15 or T42 */ |
| 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 if (reportid >= data->t42_min_reportid && |
| reportid <= data->t42_max_reportid) |
| mxt_handle_touch_suppression(data, |
| message.message[0]); |
| 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) { |
| data->t38_start_addr = object->start_address; |
| found_t38 = true; |
| } |
| if (!found_t38 && mxt_object_writable(object->type)) |
| data->cfg_version_idx += object->size + 1; |
| } |
| |
| return 0; |
| } |
| |
| static int compare_versions(const u8 *v1, const u8 *v2) |
| { |
| int i; |
| |
| if (!v1 || !v2) |
| return -EINVAL; |
| |
| /* The major version number stays the same across different versions for |
| * a particular controller on a target. The minor and sub-minor version |
| * numbers indicate which version is newer. |
| */ |
| if (v1[0] != v2[0]) |
| return -EINVAL; |
| |
| for (i = 1; i < MXT_CFG_VERSION_LEN; i++) { |
| if (v1[i] > v2[i]) |
| return MXT_CFG_VERSION_LESS; /* v2 is older */ |
| |
| if (v1[i] < v2[i]) |
| return MXT_CFG_VERSION_GREATER; /* v2 is newer */ |
| } |
| |
| return MXT_CFG_VERSION_EQUAL; /* v1 and v2 are equal */ |
| } |
| |
| static void mxt_check_config_version(struct mxt_data *data, |
| const struct mxt_config_info *cfg_info, |
| bool match_major, |
| const u8 **cfg_version_found, |
| bool *found_cfg_major_match) |
| { |
| const u8 *cfg_version; |
| int result = -EINVAL; |
| |
| cfg_version = cfg_info->config + data->cfg_version_idx; |
| |
| if (*cfg_version_found) |
| result = compare_versions(*cfg_version_found, cfg_version); |
| |
| if (match_major) { |
| if (result >= MXT_CFG_VERSION_EQUAL) |
| *found_cfg_major_match = true; |
| |
| if (result == MXT_CFG_VERSION_EQUAL || |
| result == MXT_CFG_VERSION_GREATER) { |
| data->config_info = cfg_info; |
| data->fw_name = cfg_info->fw_name; |
| *cfg_version_found = cfg_version; |
| } |
| |
| if (result == MXT_CFG_VERSION_GREATER) |
| data->update_cfg = true; |
| } else if (!*cfg_version_found || result == MXT_CFG_VERSION_GREATER) { |
| data->config_info = cfg_info; |
| data->fw_name = cfg_info->fw_name; |
| data->update_cfg = true; |
| *cfg_version_found = cfg_version; |
| } |
| } |
| |
| /* If the controller's config version has a non-zero major number, call this |
| * function with match_major = true to look for the latest config present in |
| * the pdata based on matching family id, variant id, f/w version, build, and |
| * config major number. If the controller is programmed with wrong config data |
| * previously, call this function with match_major = false to look for latest |
| * config based on based on matching family id, variant id, f/w version and |
| * build only. |
| */ |
| static int mxt_search_config_array(struct mxt_data *data, bool match_major) |
| { |
| |
| const struct mxt_platform_data *pdata = data->pdata; |
| const struct mxt_config_info *cfg_info; |
| const struct mxt_info *info = &data->info; |
| const u8 *cfg_version_found; |
| bool found_cfg_major_match = false; |
| int i; |
| |
| cfg_version_found = match_major ? data->cfg_version : NULL; |
| |
| 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) { |
| |
| mxt_check_config_version(data, cfg_info, match_major, |
| &cfg_version_found, &found_cfg_major_match); |
| } |
| } |
| |
| if (data->config_info || found_cfg_major_match) |
| return 0; |
| |
| data->config_info = NULL; |
| data->fw_name = NULL; |
| |
| 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, |
| sizeof(data->cfg_version), data->cfg_version); |
| if (error) { |
| dev_err(dev, "Unable to read config version\n"); |
| return error; |
| } |
| dev_info(dev, "Current config version on the controller is %d.%d.%d\n", |
| data->cfg_version[0], data->cfg_version[1], |
| data->cfg_version[2]); |
| |
| /* configuration update requires major match */ |
| error = mxt_search_config_array(data, true); |
| |
| /* if no_force_update is false , try again with false |
| as the second parameter to mxt_search_config_array */ |
| if (error && (data->no_force_update == false)) |
| error = mxt_search_config_array(data, false); |
| |
| if (error) { |
| dev_err(dev, |
| "Unable to find matching config in pdata\n"); |
| return error; |
| } |
| |
| return 0; |
| } |
| |
| static void mxt_power_on_delay(struct mxt_data *data) |
| { |
| const struct mxt_platform_data *pdata = data->pdata; |
| const struct mxt_config_info *cfg_info; |
| u32 delay = 0; |
| int i; |
| |
| for (i = 0; i < pdata->config_array_size; i++) { |
| cfg_info = &pdata->config_array[i]; |
| |
| switch (cfg_info->family_id) { |
| case MXT224_ID: |
| delay = max_t(u32, delay, MXT224_POWER_ON_TIME); |
| break; |
| case MXT224E_ID: |
| delay = max_t(u32, delay, MXT224E_POWER_ON_TIME); |
| break; |
| case MXT336S_ID: |
| delay = max_t(u32, delay, MXT336S_POWER_ON_TIME); |
| break; |
| case MXT1386_ID: |
| delay = max_t(u32, delay, |
| max_t(u32, MXT1386_POWER_ON_TIME, |
| MXT1386E_POWER_ON_TIME)); |
| break; |
| case MXT1664S_ID: |
| delay = max_t(u32, delay, MXT1664S_POWER_ON_TIME); |
| break; |
| default: |
| delay = max_t(u32, delay, MXT_POWER_ON_TIME); |
| } |
| } |
| |
| msleep(delay); |
| } |
| |
| 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 MXT336S_ID: |
| msleep(MXT336S_RESET_TIME); |
| break; |
| case MXT1386_ID: |
| msleep(max_t(u32, MXT1386_RESET_TIME, MXT1386E_RESET_TIME)); |
| break; |
| case MXT1664S_ID: |
| msleep(MXT1664S_RESET_TIME); |
| break; |
| default: |
| msleep(MXT_RESET_TIME); |
| } |
| } |
| |
| static int mxt_backup_nv(struct mxt_data *data) |
| { |
| int error; |
| u8 command_register; |
| int timeout_counter = 0; |
| |
| /* 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) |
| return error; |
| |
| usleep_range(1000, 2000); |
| |
| } while ((command_register != 0) && (++timeout_counter <= 100)); |
| |
| if (timeout_counter > 100) { |
| dev_err(&data->client->dev, "No response after backup!\n"); |
| return -EIO; |
| } |
| |
| /* Soft reset */ |
| mxt_write_object(data, MXT_GEN_COMMAND_T6, MXT_COMMAND_RESET, 1); |
| |
| mxt_reset_delay(data); |
| |
| return 0; |
| } |
| |
| static int mxt_save_objects(struct mxt_data *data) |
| { |
| struct i2c_client *client = data->client; |
| struct mxt_object *t7_object; |
| struct mxt_object *t9_object; |
| struct mxt_object *t15_object; |
| struct mxt_object *t42_object; |
| int error; |
| |
| /* 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"); |
| return -EINVAL; |
| } |
| |
| 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"); |
| return error; |
| } |
| |
| /* 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"); |
| return -EINVAL; |
| } |
| data->t9_max_reportid = t9_object->max_reportid; |
| data->t9_min_reportid = t9_object->max_reportid - |
| (t9_object->num_report_ids * |
| (t9_object->instances + 1)) + 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 * |
| (t15_object->instances + 1)) + 1; |
| } |
| } |
| |
| /* Store T42 min and max report ids */ |
| t42_object = mxt_get_object(data, MXT_PROCI_TOUCHSUPPRESSION_T42); |
| if (!t42_object) |
| dev_dbg(&client->dev, "T42 object is not available\n"); |
| else { |
| data->t42_max_reportid = t42_object->max_reportid; |
| data->t42_min_reportid = t42_object->max_reportid - |
| (t42_object->num_report_ids * |
| (t42_object->instances + 1)) + 1; |
| } |
| |
| return 0; |
| } |
| |
| static int mxt_update_cfg(struct mxt_data *data) |
| { |
| int error; |
| const u8 *cfg_ver; |
| |
| /* Get config data from platform data */ |
| error = mxt_get_config(data); |
| if (error) |
| dev_dbg(&data->client->dev, "Config info not found.\n"); |
| |
| /* Check register init values */ |
| if (data->config_info && data->config_info->config) { |
| if (data->update_cfg) { |
| error = mxt_check_reg_init(data); |
| if (error) { |
| dev_err(&data->client->dev, |
| "Failed to check reg init value\n"); |
| return error; |
| } |
| |
| error = mxt_backup_nv(data); |
| if (error) { |
| dev_err(&data->client->dev, "Failed to back up NV\n"); |
| return error; |
| } |
| |
| cfg_ver = data->config_info->config + |
| data->cfg_version_idx; |
| dev_info(&data->client->dev, |
| "Config updated from %d.%d.%d to %d.%d.%d\n", |
| data->cfg_version[0], data->cfg_version[1], |
| data->cfg_version[2], |
| cfg_ver[0], cfg_ver[1], cfg_ver[2]); |
| |
| memcpy(data->cfg_version, cfg_ver, MXT_CFG_VERSION_LEN); |
| } |
| } else { |
| dev_info(&data->client->dev, |
| "No cfg data defined, skipping check reg init\n"); |
| } |
| |
| error = mxt_save_objects(data); |
| if (error) |
| return error; |
| |
| return 0; |
| } |
| |
| |
| |
| static int mxt_initialize(struct mxt_data *data) |
| { |
| struct i2c_client *client = data->client; |
| struct mxt_info *info = &data->info; |
| int error; |
| u8 val; |
| |
| error = mxt_get_info(data); |
| if (error) { |
| /* Try bootloader mode */ |
| error = mxt_switch_to_bootloader_address(data); |
| if (error) |
| return error; |
| |
| error = mxt_check_bootloader(client, MXT_APP_CRC_FAIL); |
| if (error) |
| return error; |
| |
| dev_err(&client->dev, "Application CRC failure\n"); |
| data->state = BOOTLOADER; |
| |
| return 0; |
| } |
| |
| dev_info(&client->dev, |
| "Family ID: %d Variant ID: %d Version: %d.%d " |
| "Build: 0x%02X Object Num: %d\n", |
| info->family_id, info->variant_id, |
| info->version >> 4, info->version & 0xf, |
| info->build, info->object_num); |
| |
| data->state = APPMODE; |
| |
| 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; |
| |
| error = mxt_update_cfg(data); |
| if (error) |
| goto free_object_table; |
| /* 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, |
| "Matrix X Size: %d Matrix Y Size: %d\n", |
| info->matrix_xsize, info->matrix_ysize); |
| |
| 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 strtobyte(const char *data, u8 *value) |
| { |
| char str[3]; |
| |
| str[0] = data[0]; |
| str[1] = data[1]; |
| str[2] = '\0'; |
| |
| return kstrtou8(str, 16, value); |
| } |
| |
| 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 retry = 0; |
| unsigned int pos = 0; |
| int ret, i, max_frame_size; |
| u8 *frame; |
| |
| switch (data->info.family_id) { |
| case MXT224_ID: |
| case MXT224E_ID: |
| case MXT336S_ID: |
| max_frame_size = MXT_SINGLE_FW_MAX_FRAME_SIZE; |
| break; |
| case MXT1386_ID: |
| case MXT1664S_ID: |
| max_frame_size = MXT_CHIPSET_FW_MAX_FRAME_SIZE; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| frame = kmalloc(max_frame_size, GFP_KERNEL); |
| if (!frame) { |
| dev_err(dev, "Unable to allocate memory for frame data\n"); |
| return -ENOMEM; |
| } |
| |
| ret = request_firmware(&fw, fn, dev); |
| if (ret < 0 || !fw) { |
| dev_err(dev, "Unable to open firmware %s\n", fn); |
| goto free_frame; |
| } |
| |
| if (data->state != BOOTLOADER) { |
| /* Change to the bootloader mode */ |
| mxt_write_object(data, MXT_GEN_COMMAND_T6, |
| MXT_COMMAND_RESET, MXT_BOOT_VALUE); |
| mxt_reset_delay(data); |
| |
| ret = mxt_switch_to_bootloader_address(data); |
| if (ret) |
| goto release_firmware; |
| } |
| |
| ret = mxt_check_bootloader(client, MXT_WAITING_BOOTLOAD_CMD); |
| if (ret) { |
| /* Bootloader may still be unlocked from previous update |
| * attempt */ |
| ret = mxt_check_bootloader(client, |
| MXT_WAITING_FRAME_DATA); |
| |
| if (ret) |
| goto return_to_app_mode; |
| } else { |
| dev_info(dev, "Unlocking bootloader\n"); |
| /* Unlock bootloader */ |
| mxt_unlock_bootloader(client); |
| } |
| |
| while (pos < fw->size) { |
| ret = mxt_check_bootloader(client, |
| MXT_WAITING_FRAME_DATA); |
| if (ret) |
| goto release_firmware; |
| |
| /* Get frame length MSB */ |
| ret = strtobyte(fw->data + pos, frame); |
| if (ret) |
| goto release_firmware; |
| |
| /* Get frame length LSB */ |
| ret = strtobyte(fw->data + pos + 2, frame + 1); |
| if (ret) |
| goto release_firmware; |
| |
| frame_size = ((*frame << 8) | *(frame + 1)); |
| |
| /* We should add 2 at frame size as the the firmware data is not |
| * included the CRC bytes. |
| */ |
| frame_size += 2; |
| |
| if (frame_size > max_frame_size) { |
| dev_err(dev, "Invalid frame size - %d\n", frame_size); |
| ret = -EINVAL; |
| goto release_firmware; |
| } |
| |
| /* Convert frame data and CRC from hex to binary */ |
| for (i = 2; i < frame_size; i++) { |
| ret = strtobyte(fw->data + pos + i * 2, frame + i); |
| if (ret) |
| goto release_firmware; |
| } |
| |
| /* Write one frame to device */ |
| mxt_fw_write(client, frame, frame_size); |
| |
| ret = mxt_check_bootloader(client, |
| MXT_FRAME_CRC_PASS); |
| if (ret) { |
| retry++; |
| |
| /* Back off by 20ms per retry */ |
| msleep(retry * 20); |
| |
| if (retry > 20) |
| goto release_firmware; |
| } else { |
| retry = 0; |
| pos += frame_size * 2; |
| dev_dbg(dev, "Updated %d/%zd bytes\n", pos, fw->size); |
| } |
| } |
| |
| return_to_app_mode: |
| mxt_switch_to_appmode_address(data); |
| release_firmware: |
| release_firmware(fw); |
| free_frame: |
| kfree(frame); |
| |
| return ret; |
| } |
| |
| static const char * |
| mxt_search_fw_name(struct mxt_data *data, u8 bootldr_id) |
| { |
| const struct mxt_platform_data *pdata = data->pdata; |
| const struct mxt_config_info *cfg_info; |
| const char *fw_name = NULL; |
| int i; |
| |
| for (i = 0; i < pdata->config_array_size; i++) { |
| cfg_info = &pdata->config_array[i]; |
| if (bootldr_id == cfg_info->bootldr_id && cfg_info->fw_name) { |
| data->config_info = cfg_info; |
| data->info.family_id = cfg_info->family_id; |
| fw_name = cfg_info->fw_name; |
| } |
| } |
| |
| return fw_name; |
| } |
| |
| static ssize_t mxt_force_cfg_update_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| int flag = buf[0]-'0'; |
| int error; |
| data->no_force_update = !flag; |
| |
| if (data->state == APPMODE) { |
| disable_irq(data->irq); |
| error = mxt_update_cfg(data); |
| enable_irq(data->irq); |
| if (error) |
| return error; |
| } else { |
| dev_err(dev, |
| "Not in APPMODE, Unable to force cfg update\n"); |
| return -EINVAL; |
| } |
| |
| return count; |
| } |
| |
| 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, address; |
| const char *fw_name; |
| u8 bootldr_id; |
| u8 cfg_version[MXT_CFG_VERSION_LEN] = {0}; |
| |
| data->no_force_update = false; |
| /* If fw_name is set, then the existing firmware has an upgrade */ |
| if (!data->fw_name) { |
| /* |
| * If the device boots up in the bootloader mode, check if |
| * there is a firmware to upgrade. |
| */ |
| if (data->state == BOOTLOADER) { |
| bootldr_id = mxt_get_bootloader_id(data->client); |
| if (bootldr_id <= 0) { |
| dev_err(dev, |
| "Unable to retrieve bootloader id\n"); |
| return -EINVAL; |
| } |
| fw_name = mxt_search_fw_name(data, bootldr_id); |
| if (fw_name == NULL) { |
| dev_err(dev, |
| "Unable to find fw from bootloader id\n"); |
| return -EINVAL; |
| } |
| } else { |
| /* In APPMODE, if the f/w name does not exist, quit */ |
| dev_err(dev, |
| "Firmware name not specified in platform data\n"); |
| return -EINVAL; |
| } |
| } else { |
| fw_name = data->fw_name; |
| } |
| |
| dev_info(dev, "Upgrading the firmware file to %s\n", fw_name); |
| |
| disable_irq(data->irq); |
| |
| error = mxt_load_fw(dev, fw_name); |
| if (error) { |
| dev_err(dev, "The firmware update failed(%d)\n", error); |
| count = error; |
| } else { |
| dev_info(dev, "The firmware update succeeded\n"); |
| |
| /* Wait for reset */ |
| msleep(MXT_FWRESET_TIME); |
| |
| data->state = INIT; |
| kfree(data->object_table); |
| data->object_table = NULL; |
| data->cfg_version_idx = 0; |
| data->config_info = NULL; |
| data->update_cfg = false; |
| |
| /* T38 object address might have changed, read it from |
| touch controller */ |
| address = mxt_get_object_address(dev, MXT_SPT_USERDATA_T38); |
| if (address < 0) { |
| dev_err(dev, "T38 required for touch operation\n"); |
| return -EINVAL; |
| } |
| |
| data->t38_start_addr = address; |
| |
| error = __mxt_write_reg(data->client, data->t38_start_addr, |
| sizeof(cfg_version), cfg_version); |
| if (error) |
| dev_err(dev, |
| "Unable to zero out config version after fw upgrade\n"); |
| |
| mxt_initialize(data); |
| } |
| |
| if (data->state == APPMODE) { |
| enable_irq(data->irq); |
| |
| error = mxt_make_highchg(data); |
| if (error) |
| return error; |
| } |
| |
| return count; |
| } |
| |
| #if defined(CONFIG_SECURE_TOUCH) |
| |
| static ssize_t mxt_secure_touch_enable_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| return scnprintf(buf, PAGE_SIZE, "%d", atomic_read(&data->st_enabled)); |
| } |
| /* |
| * Accept only "0" and "1" valid values. |
| * "0" will reset the st_enabled flag, then wake up the reading process. |
| * The bus driver is notified via pm_runtime that it is not required to stay |
| * awake anymore. |
| * It will also make sure the queue of events is emptied in the controller, |
| * in case a touch happened in between the secure touch being disabled and |
| * the local ISR being ungated. |
| * "1" will set the st_enabled flag and clear the st_pending_irqs flag. |
| * The bus driver is requested via pm_runtime to stay awake. |
| */ |
| static ssize_t mxt_secure_touch_enable_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| struct device *adapter = data->client->adapter->dev.parent; |
| unsigned long value; |
| int err = 0; |
| |
| if (count > 2) |
| return -EINVAL; |
| |
| err = kstrtoul(buf, 10, &value); |
| if (err != 0) |
| return err; |
| |
| err = count; |
| |
| switch (value) { |
| case 0: |
| if (atomic_read(&data->st_enabled) == 0) |
| break; |
| |
| pm_runtime_put(adapter); |
| atomic_set(&data->st_enabled, 0); |
| mxt_secure_touch_notify(data); |
| mxt_interrupt(data->client->irq, data); |
| complete(&data->st_powerdown); |
| break; |
| case 1: |
| if (atomic_read(&data->st_enabled)) { |
| err = -EBUSY; |
| break; |
| } |
| |
| if (pm_runtime_get_sync(adapter) < 0) { |
| dev_err(&data->client->dev, "pm_runtime_get failed\n"); |
| err = -EIO; |
| break; |
| } |
| INIT_COMPLETION(data->st_powerdown); |
| atomic_set(&data->st_enabled, 1); |
| synchronize_irq(data->client->irq); |
| atomic_set(&data->st_pending_irqs, 0); |
| break; |
| default: |
| dev_err(&data->client->dev, "unsupported value: %lu\n", value); |
| err = -EINVAL; |
| break; |
| } |
| |
| return err; |
| } |
| |
| static ssize_t mxt_secure_touch_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct mxt_data *data = dev_get_drvdata(dev); |
| int val = 0; |
| |
| if (atomic_read(&data->st_enabled) == 0) |
| return -EBADF; |
| |
| if (atomic_cmpxchg(&data->st_pending_irqs, -1, 0) == -1) |
| return -EINVAL; |
| |
| if (atomic_cmpxchg(&data->st_pending_irqs, 1, 0) == 1) |
| val = 1; |
| |
| return scnprintf(buf, PAGE_SIZE, "%u", val); |
| } |
| |
| static DEVICE_ATTR(secure_touch_enable, S_IRUGO | S_IWUSR | S_IWGRP , |
| mxt_secure_touch_enable_show, |
| mxt_secure_touch_enable_store); |
| static DEVICE_ATTR(secure_touch, S_IRUGO, mxt_secure_touch_show, NULL); |
| #endif |
| |
| static DEVICE_ATTR(object, S_IRUGO, mxt_object_show, NULL); |
| static DEVICE_ATTR(update_fw, S_IWUSR | S_IWGRP , NULL, mxt_update_fw_store); |
| static DEVICE_ATTR(force_cfg_update, S_IWUSR | S_IWGRP , |
| NULL, |
| mxt_force_cfg_update_store); |
| |
| static struct attribute *mxt_attrs[] = { |
| &dev_attr_object.attr, |
| &dev_attr_update_fw.attr, |
| &dev_attr_force_cfg_update.attr, |
| #if defined(CONFIG_SECURE_TOUCH) |
| &dev_attr_secure_touch_enable.attr, |
| &dev_attr_secure_touch.attr, |
| #endif |
| NULL |
| }; |
| |
| static const struct attribute_group mxt_attr_group = { |
| .attrs = mxt_attrs, |
| }; |
| |
| |
| #if defined(CONFIG_SECURE_TOUCH) |
| static void mxt_secure_touch_stop(struct mxt_data *data, int blocking) |
| { |
| if (atomic_read(&data->st_enabled)) { |
| atomic_set(&data->st_pending_irqs, -1); |
| mxt_secure_touch_notify(data); |
| if (blocking) |
| wait_for_completion_interruptible(&data->st_powerdown); |
| } |
| } |
| #else |
| static void mxt_secure_touch_stop(struct mxt_data *data, int blocking) |
| { |
| } |
| #endif |
| |
| static int mxt_start(struct mxt_data *data) |
| { |
| int error; |
| mxt_secure_touch_stop(data, 1); |
| |
| /* 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; |
| } |
| |
| return 0; |
| } |
| |
| static int mxt_stop(struct mxt_data *data) |
| { |
| int error; |
| u8 t7_data[T7_DATA_SIZE] = {0}; |
| mxt_secure_touch_stop(data, 1); |
| |
| 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; |
| |
| if (data->state == APPMODE) { |
| 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; |
| |
| if (data->state == APPMODE) { |
| error = mxt_stop(data); |
| if (error < 0) |
| dev_err(&data->client->dev, "mxt_stop failed in input_close\n"); |
| } |
| } |
| |
| static int reg_set_optimum_mode_check(struct regulator *reg, int load_uA) |
| { |
| return (regulator_count_voltages(reg) > 0) ? |
| regulator_set_optimum_mode(reg, load_uA) : 0; |
| } |
| |
| static int mxt_power_on(struct mxt_data *data, bool on) |
| { |
| int rc; |
| |
| if (on == false) |
| goto power_off; |
| |
| rc = reg_set_optimum_mode_check(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 = reg_set_optimum_mode_check(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 = reg_set_optimum_mode_check(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) |
| reg_set_optimum_mode_check(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) |
| reg_set_optimum_mode_check(data->vcc_dig, 0); |
| error_reg_opt_vcc_dig: |
| regulator_disable(data->vcc_ana); |
| error_reg_en_vcc_ana: |
| reg_set_optimum_mode_check(data->vcc_ana, 0); |
| return rc; |
| |
| power_off: |
| reg_set_optimum_mode_check(data->vcc_ana, 0); |
| regulator_disable(data->vcc_ana); |
| if (data->pdata->digital_pwr_regulator) { |
| reg_set_optimum_mode_check(data->vcc_dig, 0); |
| regulator_disable(data->vcc_dig); |
| } |
| if (data->pdata->i2c_pull_up) { |
| reg_set_optimum_mode_check(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 = reg_set_optimum_mode_check(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 = reg_set_optimum_mode_check(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 = reg_set_optimum_mode_check(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 = reg_set_optimum_mode_check(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 = reg_set_optimum_mode_check(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 = reg_set_optimum_mode_check(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: |
| reg_set_optimum_mode_check(data->vcc_ana, MXT_ACTIVE_LOAD_UA); |
| if (data->pdata->digital_pwr_regulator) |
| reg_set_optimum_mode_check(data->vcc_dig, |
| MXT_ACTIVE_LOAD_DIG_UA); |
| if (data->pdata->i2c_pull_up) |
| reg_set_optimum_mode_check(data->vcc_i2c, MXT_I2C_LOAD_UA); |
| |
| return rc; |
| |
| fail_regulator_hpm: |
| reg_set_optimum_mode_check(data->vcc_ana, MXT_LPM_LOAD_UA); |
| if (data->pdata->digital_pwr_regulator) |
| reg_set_optimum_mode_check(data->vcc_dig, MXT_LPM_LOAD_DIG_UA); |
| if (data->pdata->i2c_pull_up) |
| reg_set_optimum_mode_check(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; |
| |
| if (data->dev_sleep) { |
| dev_dbg(dev, "Device already in sleep\n"); |
| return 0; |
| } |
| |
| disable_irq(data->irq); |
| |
| 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); |
| mxt_release_all(data); |
| |
| /* put regulators in low power mode */ |
| if (data->lpm_support) { |
| error = mxt_regulator_lpm(data, true); |
| if (error < 0) { |
| dev_err(dev, "failed to enter low power mode\n"); |
| return error; |
| } |
| } else { |
| error = mxt_power_on(data, false); |
| if (error < 0) { |
| dev_err(dev, "failed to disable regulators\n"); |
| return error; |
| } |
| } |
| |
| data->dev_sleep = true; |
| 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; |
| |
| if (!data->dev_sleep) { |
| dev_dbg(dev, "Device already in resume\n"); |
| return 0; |
| } |
| |
| /* put regulators back in active power mode */ |
| if (data->lpm_support) { |
| error = mxt_regulator_lpm(data, false); |
| if (error < 0) { |
| dev_err(dev, "failed to enter high power mode\n"); |
| return error; |
| } |
| } else { |
| error = mxt_power_on(data, true); |
| if (error < 0) { |
| dev_err(dev, "failed to enable regulators\n"); |
| return error; |
| } |
| mxt_power_on_delay(data); |
| } |
| |
| mxt_write_object(data, MXT_GEN_COMMAND_T6, MXT_COMMAND_RESET, 1); |
| mxt_reset_delay(data); |
| |
| 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; |
| } |
| } |
| |
| /* calibrate */ |
| if (data->pdata->need_calibration) { |
| mxt_secure_touch_stop(data, 1); |
| error = mxt_write_object(data, MXT_GEN_COMMAND_T6, |
| MXT_COMMAND_CALIBRATE, 1); |
| if (error < 0) |
| dev_dbg(dev, "sending calibration command failed\n"); |
| } |
| |
| mutex_unlock(&input_dev->mutex); |
| |
| enable_irq(data->irq); |
| |
| data->dev_sleep = false; |
| return 0; |
| } |
| |
| static const struct dev_pm_ops mxt_pm_ops = { |
| #if (!defined(CONFIG_FB) && !defined(CONFIG_HAS_EARLYSUSPEND)) |
| .suspend = mxt_suspend, |
| .resume = mxt_resume, |
| #endif |
| }; |
| #else |
| static int mxt_suspend(struct device *dev) |
| { |
| return 0; |
| }; |
| static int mxt_resume(struct device *dev) |
| { |
| return 0; |
| }; |
| #endif |
| |
| static int mxt_debugfs_object_show(struct seq_file *m, void *v) |
| { |
| struct mxt_data *data = m->private; |
| struct mxt_object *object; |
| struct device *dev = &data->client->dev; |
| int i, j, k; |
| int error; |
| int obj_size; |
| u8 val; |
| |
| for (i = 0; i < data->info.object_num; i++) { |
| object = data->object_table + i; |
| obj_size = object->size + 1; |
| |
| seq_printf(m, "Object[%d] (Type %d)\n", i + 1, object->type); |
| |
| for (j = 0; j < object->instances + 1; j++) { |
| seq_printf(m, "[Instance %d]\n", j); |
| |
| for (k = 0; k < obj_size; k++) { |
| error = mxt_read_object(data, object->type, |
| j * obj_size + k, &val); |
| if (error) { |
| dev_err(dev, |
| "Failed to read object %d " |
| "instance %d at offset %d\n", |
| object->type, j, k); |
| return error; |
| } |
| |
| seq_printf(m, "Byte %d: 0x%02x (%d)\n", |
| k, val, val); |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int mxt_debugfs_object_open(struct inode *inode, struct file *file) |
| { |
| return single_open(file, mxt_debugfs_object_show, inode->i_private); |
| } |
| |
| static const struct file_operations mxt_object_fops = { |
| .owner = THIS_MODULE, |
| .open = mxt_debugfs_object_open, |
| .read = seq_read, |
| .release = single_release, |
| }; |
| |
| static void __devinit mxt_debugfs_init(struct mxt_data *data) |
| { |
| debug_base = debugfs_create_dir(MXT_DEBUGFS_DIR, NULL); |
| if (IS_ERR_OR_NULL(debug_base)) |
| pr_err("atmel_mxt_ts: Failed to create debugfs dir\n"); |
| if (IS_ERR_OR_NULL(debugfs_create_file(MXT_DEBUGFS_FILE, |
| 0444, |
| debug_base, |
| data, |
| &mxt_object_fops))) { |
| pr_err("atmel_mxt_ts: Failed to create object file\n"); |
| debugfs_remove_recursive(debug_base); |
| } |
| } |
| |
| #ifdef CONFIG_OF |
| static int mxt_get_dt_coords(struct device *dev, char *name, |
| struct mxt_platform_data *pdata) |
| { |
| u32 coords[MXT_COORDS_ARR_SIZE]; |
| struct property *prop; |
| struct device_node *np = dev->of_node; |
| int coords_size, rc; |
| |
| prop = of_find_property(np, name, NULL); |
| if (!prop) |
| return -EINVAL; |
| if (!prop->value) |
| return -ENODATA; |
| |
| coords_size = prop->length / sizeof(u32); |
| if (coords_size != MXT_COORDS_ARR_SIZE) { |
| dev_err(dev, "invalid %s\n", name); |
| return -EINVAL; |
| } |
| |
| rc = of_property_read_u32_array(np, name, coords, coords_size); |
| if (rc && (rc != -EINVAL)) { |
| dev_err(dev, "Unable to read %s\n", name); |
| return rc; |
| } |
| |
| if (strncmp(name, "atmel,panel-coords", |
| sizeof("atmel,panel-coords")) == 0) { |
| pdata->panel_minx = coords[0]; |
| pdata->panel_miny = coords[1]; |
| pdata->panel_maxx = coords[2]; |
| pdata->panel_maxy = coords[3]; |
| } else if (strncmp(name, "atmel,display-coords", |
| sizeof("atmel,display-coords")) == 0) { |
| pdata->disp_minx = coords[0]; |
| pdata->disp_miny = coords[1]; |
| pdata->disp_maxx = coords[2]; |
| pdata->disp_maxy = coords[3]; |
| } else { |
| dev_err(dev, "unsupported property %s\n", name); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int mxt_parse_config(struct device *dev, struct device_node *np, |
| struct mxt_config_info *info) |
| { |
| struct property *prop; |
| u8 *temp_cfg; |
| |
| prop = of_find_property(np, "atmel,config", &info->config_length); |
| if (!prop) { |
| dev_err(dev, "Looking up %s property in node %s failed", |
| "atmel,config", np->full_name); |
| return -ENODEV; |
| } else if (!info->config_length) { |
| dev_err(dev, "Invalid length of configuration data\n"); |
| return -EINVAL; |
| } |
| |
| temp_cfg = devm_kzalloc(dev, |
| info->config_length * sizeof(u8), GFP_KERNEL); |
| if (!temp_cfg) { |
| dev_err(dev, "Unable to allocate memory to store cfg\n"); |
| return -ENOMEM; |
| } |
| |
| memcpy(temp_cfg, prop->value, info->config_length); |
| info->config = temp_cfg; |
| |
| return 0; |
| } |
| |
| static int mxt_parse_dt(struct device *dev, struct mxt_platform_data *pdata) |
| { |
| int rc; |
| struct mxt_config_info *info; |
| struct device_node *temp, *np = dev->of_node; |
| struct property *prop; |
| u32 temp_val; |
| |
| rc = mxt_get_dt_coords(dev, "atmel,panel-coords", pdata); |
| if (rc) |
| return rc; |
| |
| rc = mxt_get_dt_coords(dev, "atmel,display-coords", pdata); |
| if (rc) |
| return rc; |
| |
| /* regulator info */ |
| pdata->i2c_pull_up = of_property_read_bool(np, "atmel,i2c-pull-up"); |
| pdata->digital_pwr_regulator = of_property_read_bool(np, |
| "atmel,dig-reg-support"); |
| |
| pdata->no_force_update = of_property_read_bool(np, |
| "atmel,no-force-update"); |
| |
| pdata->no_lpm_support = of_property_read_bool(np, |
| "atmel,no-lpm-support"); |
| |
| /* reset, irq gpio info */ |
| pdata->reset_gpio = of_get_named_gpio_flags(np, "atmel,reset-gpio", |
| 0, &pdata->reset_gpio_flags); |
| pdata->irq_gpio = of_get_named_gpio_flags(np, "atmel,irq-gpio", |
| 0, &pdata->irq_gpio_flags); |
| |
| /* keycodes for keyarray object*/ |
| prop = of_find_property(np, "atmel,key-codes", NULL); |
| if (prop) { |
| pdata->key_codes = devm_kzalloc(dev, |
| sizeof(int) * MXT_KEYARRAY_MAX_KEYS, |
| GFP_KERNEL); |
| if (!pdata->key_codes) |
| return -ENOMEM; |
| if ((prop->length/sizeof(u32)) == MXT_KEYARRAY_MAX_KEYS) { |
| rc = of_property_read_u32_array(np, "atmel,key-codes", |
| pdata->key_codes, MXT_KEYARRAY_MAX_KEYS); |
| if (rc) { |
| dev_err(dev, "Unable to read key codes\n"); |
| return rc; |
| } |
| } else |
| return -EINVAL; |
| } |
| |
| /* need calibration during wakeup? */ |
| pdata->need_calibration = of_property_read_bool(np, |
| "atmel,need-calibration"); |
| /* config array size */ |
| pdata->config_array_size = 0; |
| temp = NULL; |
| while ((temp = of_get_next_child(np, temp))) |
| pdata->config_array_size++; |
| |
| if (!pdata->config_array_size) |
| return 0; |
| |
| info = devm_kzalloc(dev, pdata->config_array_size * |
| sizeof(struct mxt_config_info), GFP_KERNEL); |
| if (!info) { |
| dev_err(dev, "Unable to allocate memory\n"); |
| return -ENOMEM; |
| } |
| |
| rc = of_property_read_u32(np, "atmel,bl-addr", &temp_val); |
| if (rc && (rc != -EINVAL)) |
| dev_err(dev, "Unable to read bootloader address\n"); |
| else if (rc != -EINVAL) |
| pdata->bl_addr = (u8) temp_val; |
| |
| pdata->config_array = info; |
| |
| for_each_child_of_node(np, temp) { |
| rc = of_property_read_string(temp, "atmel,fw-name", |
| &info->fw_name); |
| if (rc && (rc != -EINVAL)) { |
| dev_err(dev, "Unable to read fw name\n"); |
| return rc; |
| } |
| |
| rc = of_property_read_u32(temp, "atmel,family-id", &temp_val); |
| if (rc) { |
| dev_err(dev, "Unable to read family id\n"); |
| return rc; |
| } else |
| info->family_id = (u8) temp_val; |
| |
| rc = of_property_read_u32(temp, "atmel,variant-id", &temp_val); |
| if (rc) { |
| dev_err(dev, "Unable to read variant id\n"); |
| return rc; |
| } else |
| info->variant_id = (u8) temp_val; |
| |
| rc = of_property_read_u32(temp, "atmel,version", &temp_val); |
| if (rc) { |
| dev_err(dev, "Unable to read controller version\n"); |
| return rc; |
| } else |
| info->version = (u8) temp_val; |
| |
| rc = of_property_read_u32(temp, "atmel,build", &temp_val); |
| if (rc) { |
| dev_err(dev, "Unable to read build id\n"); |
| return rc; |
| } else |
| info->build = (u8) temp_val; |
| |
| rc = of_property_read_u32(temp, |
| "atmel,bootldr-id", &temp_val); |
| if (rc && (rc != -EINVAL)) |
| dev_err(dev, "Unable to read bootldr-id\n"); |
| else if (rc != -EINVAL) |
| info->bootldr_id = (u8) temp_val; |
| |
| rc = mxt_parse_config(dev, temp, info); |
| if (rc) { |
| dev_err(dev, "Unable to parse config data\n"); |
| return rc; |
| } |
| info++; |
| } |
| |
| return 0; |
| } |
| #else |
| static int mxt_parse_dt(struct device *dev, struct mxt_platform_data *pdata) |
| { |
| return -ENODEV; |
| } |
| #endif |
| |
| #if defined(CONFIG_FB) |
| static int fb_notifier_callback(struct notifier_block *self, |
| unsigned long event, void *data) |
| { |
| struct fb_event *evdata = data; |
| int *blank; |
| struct mxt_data *mxt_dev_data = |
| container_of(self, struct mxt_data, fb_notif); |
| |
| if (evdata && evdata->data && mxt_dev_data && mxt_dev_data->client) { |
| if (event == FB_EVENT_BLANK) { |
| blank = evdata->data; |
| if (*blank == FB_BLANK_UNBLANK) |
| mxt_resume(&mxt_dev_data->client->dev); |
| else if (*blank == FB_BLANK_POWERDOWN) |
| mxt_suspend(&mxt_dev_data->client->dev); |
| } |
| } |
| |
| return 0; |
| } |
| #elif 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 |
| |
| #if defined(CONFIG_SECURE_TOUCH) |
| static void __devinit mxt_secure_touch_init(struct mxt_data *data) |
| { |
| init_completion(&data->st_powerdown); |
| } |
| #else |
| static void __devinit mxt_secure_touch_init(struct mxt_data *data) |
| { |
| } |
| #endif |
| |
| static int __devinit mxt_probe(struct i2c_client *client, |
| const struct i2c_device_id *id) |
| { |
| struct mxt_platform_data *pdata; |
| struct mxt_data *data; |
| struct input_dev *input_dev; |
| int error, i; |
| |
| if (client->dev.of_node) { |
| pdata = devm_kzalloc(&client->dev, |
| sizeof(struct mxt_platform_data), GFP_KERNEL); |
| if (!pdata) { |
| dev_err(&client->dev, "Failed to allocate memory\n"); |
| return -ENOMEM; |
| } |
| |
| error = mxt_parse_dt(&client->dev, pdata); |
| if (error) |
| return error; |
| } else |
| pdata = client->dev.platform_data; |
| |
| 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; |
| } |
| |
| data->state = INIT; |
| input_dev->name = "atmel_mxt_ts"; |
| 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->no_force_update = pdata->no_force_update; |
| data->lpm_support = !pdata->no_lpm_support; |
| data->dev_sleep = false; |
| |
| __set_bit(EV_ABS, input_dev->evbit); |
| __set_bit(EV_KEY, input_dev->evbit); |
| __set_bit(BTN_TOUCH, input_dev->keybit); |
| __set_bit(INPUT_PROP_DIRECT, input_dev->propbit); |
| |
| /* For single touch */ |
| input_set_abs_params(input_dev, ABS_X, |
| pdata->disp_minx, pdata->disp_maxx, 0, 0); |
| input_set_abs_params(input_dev, ABS_Y, |
| pdata->disp_miny, pdata->disp_maxy, 0, 0); |
| input_set_abs_params(input_dev, ABS_PRESSURE, |
| 0, 255, 0, 0); |
| |
| /* For multi touch */ |
| input_mt_init_slots(input_dev, MXT_MAX_FINGER); |
| 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, |
| pdata->disp_minx, pdata->disp_maxx, 0, 0); |
| input_set_abs_params(input_dev, ABS_MT_POSITION_Y, |
| pdata->disp_miny, pdata->disp_maxy, 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 (gpio_is_valid(pdata->reset_gpio)) { |
| /* configure touchscreen reset out gpio */ |
| error = gpio_request(pdata->reset_gpio, "mxt_reset_gpio"); |
| if (error) { |
| dev_err(&client->dev, "unable to request gpio [%d]\n", |
| pdata->reset_gpio); |
| goto err_regulator_on; |
| } |
| |
| error = gpio_direction_output(pdata->reset_gpio, 0); |
| if (error) { |
| dev_err(&client->dev, |
| "unable to set direction for gpio [%d]\n", |
| pdata->reset_gpio); |
| goto err_reset_gpio_req; |
| } |
| mxt_reset_delay(data); |
| } |
| |
| 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_reset_gpio_req; |
| } |
| |
| if (gpio_is_valid(pdata->irq_gpio)) { |
| /* configure touchscreen irq gpio */ |
| error = gpio_request(pdata->irq_gpio, "mxt_irq_gpio"); |
| if (error) { |
| dev_err(&client->dev, "unable to request gpio [%d]\n", |
| pdata->irq_gpio); |
| goto err_power_on; |
| } |
| error = gpio_direction_input(pdata->irq_gpio); |
| if (error) { |
| dev_err(&client->dev, |
| "unable to set direction for gpio [%d]\n", |
| pdata->irq_gpio); |
| goto err_irq_gpio_req; |
| } |
| data->irq = client->irq = gpio_to_irq(pdata->irq_gpio); |
| } else { |
| dev_err(&client->dev, "irq gpio not provided\n"); |
| goto err_power_on; |
| } |
| |
| if (gpio_is_valid(pdata->reset_gpio)) { |
| error = gpio_direction_output(pdata->reset_gpio, 1); |
| if (error) { |
| dev_err(&client->dev, |
| "unable to set direction for gpio [%d]\n", |
| pdata->reset_gpio); |
| goto err_irq_gpio_req; |
| } |
| } |
| |
| mxt_power_on_delay(data); |
| |
| data->addr_pair.application = data->client->addr; |
| |
| if (pdata->bl_addr) |
| data->addr_pair.bootloader = pdata->bl_addr; |
| else |
| mxt_lookup_bootloader_address(data); |
| |
| error = mxt_initialize(data); |
| if (error) |
| goto err_irq_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; |
| } |
| |
| if (data->state == APPMODE) { |
| error = mxt_make_highchg(data); |
| if (error) { |
| dev_err(&client->dev, "Failed to make high CHG\n"); |
| 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_FB) |
| data->fb_notif.notifier_call = fb_notifier_callback; |
| |
| error = fb_register_client(&data->fb_notif); |
| |
| if (error) |
| dev_err(&client->dev, "Unable to register fb_notifier: %d\n", |
| error); |
| #elif 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 |
| |
| mxt_debugfs_init(data); |
| |
| mxt_secure_touch_init(data); |
| |
| 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_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_reset_gpio_req: |
| if (gpio_is_valid(pdata->reset_gpio)) |
| gpio_free(pdata->reset_gpio); |
| 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_FB) |
| if (fb_unregister_client(&data->fb_notif)) |
| dev_err(&client->dev, "Error occurred while unregistering fb_notifier.\n"); |
| #elif 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); |
| |
| debugfs_remove_recursive(debug_base); |
| |
| 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); |
| #ifdef CONFIG_OF |
| static struct of_device_id mxt_match_table[] = { |
| { .compatible = "atmel,mxt-ts",}, |
| { }, |
| }; |
| #else |
| #define mxt_match_table NULL |
| #endif |
| |
| static struct i2c_driver mxt_driver = { |
| .driver = { |
| .name = "atmel_mxt_ts", |
| .owner = THIS_MODULE, |
| .of_match_table = mxt_match_table, |
| #ifdef CONFIG_PM |
| .pm = &mxt_pm_ops, |
| #endif |
| }, |
| .probe = mxt_probe, |
| .remove = __devexit_p(mxt_remove), |
| .id_table = mxt_id, |
| }; |
| |
| module_i2c_driver(mxt_driver); |
| |
| /* Module information */ |
| MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); |
| MODULE_DESCRIPTION("Atmel maXTouch Touchscreen driver"); |
| MODULE_LICENSE("GPL"); |