From d783b17fe2b01ca42068e43a9783e22aa53bb10d Mon Sep 17 00:00:00 2001 From: Nick Dyer Date: Wed, 6 Sep 2017 14:24:55 +0530 Subject: input: atmel_mxt_ts driver update Update mxt driver to upstream version. Signed-off-by: Bhuvanchandra DV Acked-by: Marcel Ziswiler --- drivers/input/touchscreen/Kconfig | 1 + drivers/input/touchscreen/atmel_mxt_ts.c | 3833 ++++++++++++++++++++---------- 2 files changed, 2601 insertions(+), 1233 deletions(-) (limited to 'drivers') diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 936f1e71a21f..a61169a3f72c 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -89,6 +89,7 @@ config TOUCHSCREEN_AD7879_SPI config TOUCHSCREEN_ATMEL_MXT tristate "Atmel mXT I2C Touchscreen" depends on I2C + select FW_LOADER help Say Y here if you have Atmel mXT series I2C touchscreen, such as AT42QT602240/ATMXT224, connected to your system. diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index 6721a1fd2456..4ddbced67762 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -2,8 +2,10 @@ * Atmel maXTouch Touchscreen driver * * Copyright (C) 2010 Samsung Electronics Co.Ltd - * Copyright (C) 2011 Atmel Corporation - * Copyright (C) 2011-2012 NVIDIA Corporation + * Copyright (C) 2011-2014 Atmel Corporation + * Copyright (C) 2012 Google, Inc. + * Copyright (C) 2016 Zodiac Inflight Innovations + * * Author: Joonyoung Shim * * This program is free software; you can redistribute it and/or modify it @@ -13,51 +15,35 @@ * */ +#include +#include #include #include +#include #include #include #include -#include -#include +#include +#include #include +#include #include -#if defined(CONFIG_HAS_EARLYSUSPEND) -#include -#endif -#define CREATE_TRACE_POINTS -#include - -/* Family ID */ -#define MXT224_ID 0x80 -#define MXT768E_ID 0xA1 -#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 */ +#include +#include +#include +#include +#include + +/* Firmware files */ #define MXT_FW_NAME "maxtouch.fw" +#define MXT_CFG_NAME "maxtouch.cfg" +#define MXT_CFG_MAGIC "OBP_RAW V1" /* 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 +#define MXT_INFO_CHECKSUM_SIZE 3 +#define MXT_MAX_BLOCK_WRITE 256 /* Object types */ #define MXT_DEBUG_DIAGNOSTIC_T37 37 @@ -87,6 +73,10 @@ #define MXT_SPT_DIGITIZER_T43 43 #define MXT_SPT_MESSAGECOUNT_T44 44 #define MXT_SPT_CTECONFIG_T46 46 +#define MXT_TOUCH_MULTITOUCHSCREEN_T100 100 + +/* MXT_GEN_MESSAGE_T5 object */ +#define MXT_RPTID_NOMSG 0xff /* MXT_GEN_COMMAND_T6 field */ #define MXT_COMMAND_RESET 0 @@ -95,125 +85,118 @@ #define MXT_COMMAND_REPORTALL 3 #define MXT_COMMAND_DIAGNOSTIC 5 +/* Define for T6 status byte */ +#define MXT_T6_STATUS_RESET (1 << 7) +#define MXT_T6_STATUS_OFL (1 << 6) +#define MXT_T6_STATUS_SIGERR (1 << 5) +#define MXT_T6_STATUS_CAL (1 << 4) +#define MXT_T6_STATUS_CFGERR (1 << 3) +#define MXT_T6_STATUS_COMSERR (1 << 2) + /* 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 +struct t7_config { + u8 idle; + u8 active; +} __packed; + +#define MXT_POWER_CFG_RUN 0 +#define MXT_POWER_CFG_DEEPSLEEP 1 /* MXT_TOUCH_MULTI_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 +#define MXT_T9_CTRL 0 +#define MXT_T9_XSIZE 3 +#define MXT_T9_YSIZE 4 +#define MXT_T9_ORIENT 9 +#define MXT_T9_RANGE 18 + +/* MXT_TOUCH_MULTI_T9 status */ +#define MXT_T9_UNGRIP (1 << 0) +#define MXT_T9_SUPPRESS (1 << 1) +#define MXT_T9_AMP (1 << 2) +#define MXT_T9_VECTOR (1 << 3) +#define MXT_T9_MOVE (1 << 4) +#define MXT_T9_RELEASE (1 << 5) +#define MXT_T9_PRESS (1 << 6) +#define MXT_T9_DETECT (1 << 7) + +struct t9_range { + __le16 x; + __le16 y; +} __packed; + +/* MXT_TOUCH_MULTI_T9 orient */ +#define MXT_T9_ORIENT_SWITCH (1 << 0) +#define MXT_T9_ORIENT_INVERTX (1 << 1) +#define MXT_T9_ORIENT_INVERTY (1 << 2) /* 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 - -/* Defines for Suspend/Resume */ -#define MXT_SUSPEND_STATIC 0 -#define MXT_SUSPEND_DYNAMIC 1 -#define MXT_T7_IDLEACQ_DISABLE 0 -#define MXT_T7_ACTVACQ_DISABLE 0 -#define MXT_T7_ACTV2IDLE_DISABLE 0 -#define MXT_T9_DISABLE 0 -#define MXT_T9_ENABLE 0x83 -#define MXT_T22_DISABLE 0 +/* MXT_DEBUG_DIAGNOSTIC_T37 */ +#define MXT_DIAGNOSTIC_PAGEUP 0x01 +#define MXT_DIAGNOSTIC_DELTAS 0x10 +#define MXT_DIAGNOSTIC_REFS 0x11 +#define MXT_DIAGNOSTIC_SIZE 128 + +#define MXT_FAMILY_1386 160 +#define MXT1386_COLUMNS 3 +#define MXT1386_PAGES_PER_COLUMN 8 + +struct t37_debug { +#ifdef CONFIG_TOUCHSCREEN_ATMEL_MXT_T37 + u8 mode; + u8 page; + u8 data[MXT_DIAGNOSTIC_SIZE]; +#endif +}; /* Define for MXT_GEN_COMMAND_T6 */ #define MXT_BOOT_VALUE 0xa5 +#define MXT_RESET_VALUE 0x01 #define MXT_BACKUP_VALUE 0x55 -#define MXT_BACKUP_TIME 200 /* msec */ -#define MXT224_RESET_TIME 65 /* msec */ -#define MXT768E_RESET_TIME 250 /* msec */ -#define MXT1386_RESET_TIME 200 /* msec */ -#define MXT_RESET_TIME 200 /* msec */ -#define MXT_RESET_NOCHGREAD 400 /* msec */ -#define MXT_WAKEUP_TIME 25 /* msec */ +/* T100 Multiple Touch Touchscreen */ +#define MXT_T100_CTRL 0 +#define MXT_T100_CFG1 1 +#define MXT_T100_TCHAUX 3 +#define MXT_T100_XSIZE 9 +#define MXT_T100_XRANGE 13 +#define MXT_T100_YSIZE 20 +#define MXT_T100_YRANGE 24 + +#define MXT_T100_CFG_SWITCHXY BIT(5) +#define MXT_T100_CFG_INVERTY BIT(6) +#define MXT_T100_CFG_INVERTX BIT(7) + +#define MXT_T100_TCHAUX_VECT BIT(0) +#define MXT_T100_TCHAUX_AMPL BIT(1) +#define MXT_T100_TCHAUX_AREA BIT(2) + +#define MXT_T100_DETECT BIT(7) +#define MXT_T100_TYPE_MASK 0x70 + +enum t100_type { + MXT_T100_TYPE_FINGER = 1, + MXT_T100_TYPE_PASSIVE_STYLUS = 2, + MXT_T100_TYPE_HOVERING_FINGER = 4, + MXT_T100_TYPE_GLOVE = 5, + MXT_T100_TYPE_LARGE_TOUCH = 6, +}; + +#define MXT_DISTANCE_ACTIVE_TOUCH 0 +#define MXT_DISTANCE_HOVERING 1 -#define MXT_FWRESET_TIME 175 /* msec */ +#define MXT_TOUCH_MAJOR_DEFAULT 1 +#define MXT_PRESSURE_DEFAULT 1 -/* Defines for MXT_SLOWSCAN_EXTENSIONS */ -#define SLOSCAN_DISABLE 0 /* Disable slow scan */ -#define SLOSCAN_ENABLE 1 /* Enable slow scan */ -#define SLOSCAN_SET_ACTVACQINT 2 /* Set ACTV scan rate */ -#define SLOSCAN_SET_IDLEACQINT 3 /* Set IDLE scan rate */ -#define SLOSCAN_SET_ACTV2IDLETO 4 /* Set the ACTIVE to IDLE TimeOut */ +/* Delay times */ +#define MXT_BACKUP_TIME 50 /* msec */ +#define MXT_RESET_TIME 200 /* msec */ +#define MXT_RESET_TIMEOUT 3000 /* msec */ +#define MXT_CRC_TIMEOUT 1000 /* msec */ +#define MXT_FW_RESET_TIME 3000 /* msec */ +#define MXT_FW_CHG_TIMEOUT 300 /* msec */ /* Command to unlock bootloader */ #define MXT_UNLOCK_CMD_MSB 0xaa @@ -227,32 +210,13 @@ #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) +#define MXT_BOOT_EXTENDED_ID (1 << 5) +#define MXT_BOOT_ID_MASK 0x1f /* Touchscreen absolute values */ #define MXT_MAX_AREA 0xff -/* Fixed Report ID values */ -#define MXT_RPTID_NOMSG 0xFF /* No messages available to read */ - -#define MXT_MAX_FINGER 10 - -#define RESUME_READS 100 - -#define MXT_DEFAULT_PRESSURE 100 +#define MXT_PIXELS_PER_MM 20 struct mxt_info { u8 family_id; @@ -267,89 +231,118 @@ struct mxt_info { struct mxt_object { u8 type; u16 start_address; - u16 size; - u16 instances; + u8 size_minus_one; + u8 instances_minus_one; u8 num_report_ids; - - /* to map object and message */ - u8 min_reportid; - u8 max_reportid; +} __packed; + +struct mxt_dbg { + u16 t37_address; + u16 diag_cmd_address; + struct t37_debug *t37_buf; + unsigned int t37_pages; + unsigned int t37_nodes; + + struct v4l2_device v4l2; + struct v4l2_pix_format format; + struct video_device vdev; + struct vb2_queue queue; + struct mutex lock; + int input; }; -struct mxt_message { - u8 reportid; - u8 message[7]; - u8 checksum; +enum v4l_dbg_inputs { + MXT_V4L_INPUT_DELTAS, + MXT_V4L_INPUT_REFS, + MXT_V4L_INPUT_MAX, }; -struct mxt_finger { - int status; - int x; - int y; - int area; - int pressure; -}; +static inline void reinit_completion(struct completion *x) +{ + x->done = 0; +} -/* This structure is used to save/restore values during suspend/resume */ -struct mxt_suspend { - u8 suspend_obj; - u8 suspend_reg; - u8 suspend_val; - u8 suspend_flags; - u8 restore_val; +static const struct v4l2_file_operations mxt_video_fops = { + .owner = THIS_MODULE, + .open = v4l2_fh_open, + .unlocked_ioctl = video_ioctl2, }; /* Each client has this additional data */ struct mxt_data { struct i2c_client *client; struct input_dev *input_dev; + char phys[64]; /* device physical location */ const struct mxt_platform_data *pdata; struct mxt_object *object_table; struct mxt_info info; - struct mxt_finger finger[MXT_MAX_FINGER]; unsigned int irq; unsigned int max_x; unsigned int max_y; - u8(*read_chg) (void); - u16 msg_address; - u16 last_address; - u8 actv_cycle_time; - u8 idle_cycle_time; - u8 actv2idle_timeout; - u8 is_stopped; - struct mutex access_mutex; -#if defined(CONFIG_HAS_EARLYSUSPEND) - struct early_suspend early_suspend; -#endif - unsigned int driver_paused; - struct bin_attribute mem_access_attr; - int debug_enabled; - int slowscan_enabled; - u8 slowscan_actv_cycle_time; - u8 slowscan_idle_cycle_time; - u8 slowscan_actv2idle_timeout; - u8 slowscan_shad_actv_cycle_time; - u8 slowscan_shad_idle_cycle_time; - u8 slowscan_shad_actv2idle_timeout; + bool invertx; + bool inverty; + bool xy_switch; + u8 xsize; + u8 ysize; + bool in_bootloader; + u16 mem_size; + u8 t100_aux_ampl; + u8 t100_aux_area; + u8 t100_aux_vect; + u8 max_reportid; + u32 config_crc; + u32 info_crc; + u8 bootloader_addr; + u8 *msg_buf; + u8 t6_status; + bool update_input; + u8 last_message_count; + u8 num_touchids; + u8 multitouch; + struct t7_config t7_cfg; + struct mxt_dbg dbg; + + /* Cached parameters from object table */ + u16 T5_address; + u8 T5_msg_size; + u8 T6_reportid; + u16 T6_address; + u16 T7_address; + u8 T9_reportid_min; + u8 T9_reportid_max; + u8 T19_reportid; + u16 T44_address; + u8 T100_reportid_min; + u8 T100_reportid_max; + + /* for fw update in bootloader */ + struct completion bl_completion; + + /* for reset handling */ + struct completion reset_completion; + + /* for config update handling */ + struct completion crc_completion; }; -static struct mxt_suspend mxt_save[] = { - {MXT_TOUCH_MULTI_T9, MXT_TOUCH_CTRL, MXT_T9_DISABLE, MXT_SUSPEND_DYNAMIC, 0}, - {MXT_PROCG_NOISE_T22, MXT_NOISE_CTRL, MXT_T22_DISABLE, MXT_SUSPEND_DYNAMIC, 0}, - {MXT_GEN_POWER_T7, MXT_POWER_IDLEACQINT, MXT_T7_IDLEACQ_DISABLE, MXT_SUSPEND_DYNAMIC, 0}, - {MXT_GEN_POWER_T7, MXT_POWER_ACTVACQINT, MXT_T7_ACTVACQ_DISABLE, MXT_SUSPEND_DYNAMIC, 0}, - {MXT_GEN_POWER_T7, MXT_POWER_ACTV2IDLETO, MXT_T7_ACTV2IDLE_DISABLE, MXT_SUSPEND_DYNAMIC, 0} +struct mxt_vb2_buffer { + struct vb2_buffer vb; + struct list_head list; }; -#if defined(CONFIG_HAS_EARLYSUSPEND) -static void mxt_early_suspend(struct early_suspend *es); -static void mxt_early_resume(struct early_suspend *es); -#endif +static size_t mxt_obj_size(const struct mxt_object *obj) +{ + return obj->size_minus_one + 1; +} + +static size_t mxt_obj_instances(const struct mxt_object *obj) +{ + return obj->instances_minus_one + 1; +} 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: @@ -380,105 +373,233 @@ static bool mxt_object_readable(unsigned int type) } } -static bool mxt_object_writable(unsigned int type) +static void mxt_dump_message(struct mxt_data *data, u8 *message) { - 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_DIGITIZER_T43: - case MXT_SPT_CTECONFIG_T46: - return true; + dev_dbg(&data->client->dev, "message: %*ph\n", + data->T5_msg_size, message); +} + +static int mxt_wait_for_completion(struct mxt_data *data, + struct completion *comp, + unsigned int timeout_ms) +{ + struct device *dev = &data->client->dev; + unsigned long timeout = msecs_to_jiffies(timeout_ms); + long ret; + + ret = wait_for_completion_interruptible_timeout(comp, timeout); + if (ret < 0) { + return ret; + } else if (ret == 0) { + dev_err(dev, "Wait for completion timed out.\n"); + return -ETIMEDOUT; + } + return 0; +} + +static int mxt_bootloader_read(struct mxt_data *data, + u8 *val, unsigned int count) +{ + int ret; + struct i2c_msg msg; + + msg.addr = data->bootloader_addr; + msg.flags = data->client->flags & I2C_M_TEN; + msg.flags |= I2C_M_RD; + msg.len = count; + msg.buf = val; + + ret = i2c_transfer(data->client->adapter, &msg, 1); + if (ret == 1) { + ret = 0; + } else { + ret = ret < 0 ? ret : -EIO; + dev_err(&data->client->dev, "%s: i2c recv failed (%d)\n", + __func__, ret); + } + + return ret; +} + +static int mxt_bootloader_write(struct mxt_data *data, + const u8 * const val, unsigned int count) +{ + int ret; + struct i2c_msg msg; + + msg.addr = data->bootloader_addr; + msg.flags = data->client->flags & I2C_M_TEN; + msg.len = count; + msg.buf = (u8 *)val; + + ret = i2c_transfer(data->client->adapter, &msg, 1); + if (ret == 1) { + ret = 0; + } else { + ret = ret < 0 ? ret : -EIO; + dev_err(&data->client->dev, "%s: i2c send failed (%d)\n", + __func__, ret); + } + + return ret; +} + +static int mxt_lookup_bootloader_address(struct mxt_data *data, bool retry) +{ + u8 appmode = data->client->addr; + u8 bootloader; + + switch (appmode) { + case 0x4a: + case 0x4b: + /* Chips after 1664S use different scheme */ + if (retry || data->info.family_id >= 0xa2) { + bootloader = appmode - 0x24; + break; + } + /* Fall through for normal case */ + case 0x4c: + case 0x4d: + case 0x5a: + case 0x5b: + bootloader = appmode - 0x26; + break; + default: - return false; + dev_err(&data->client->dev, + "Appmode i2c address 0x%02x not found\n", + appmode); + return -EINVAL; } + + data->bootloader_addr = bootloader; + return 0; +} + +static int mxt_probe_bootloader(struct mxt_data *data, bool alt_address) +{ + struct device *dev = &data->client->dev; + int error; + u8 val; + bool crc_failure; + + error = mxt_lookup_bootloader_address(data, alt_address); + if (error) + return error; + + error = mxt_bootloader_read(data, &val, 1); + if (error) + return error; + + /* Check app crc fail mode */ + crc_failure = (val & ~MXT_BOOT_STATUS_MASK) == MXT_APP_CRC_FAIL; + + dev_err(dev, "Detected bootloader, status:%02X%s\n", + val, crc_failure ? ", APP_CRC_FAIL" : ""); + + return 0; } -static void mxt_dump_message(struct device *dev, - struct mxt_message *message) +static u8 mxt_get_bootloader_version(struct mxt_data *data, u8 val) { - 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); + struct device *dev = &data->client->dev; + u8 buf[3]; + + if (val & MXT_BOOT_EXTENDED_ID) { + if (mxt_bootloader_read(data, &buf[0], 3) != 0) { + dev_err(dev, "%s: i2c failure\n", __func__); + return val; + } + + dev_dbg(dev, "Bootloader ID:%d Version:%d\n", buf[1], buf[2]); + + return buf[0]; + } else { + dev_dbg(dev, "Bootloader ID:%d\n", val & MXT_BOOT_ID_MASK); + + return val; + } } -static int mxt_check_bootloader(struct i2c_client *client, - unsigned int state) +static int mxt_check_bootloader(struct mxt_data *data, unsigned int state, + bool wait) { + struct device *dev = &data->client->dev; u8 val; + int ret; recheck: - if (i2c_master_recv(client, &val, 1) != 1) { - dev_err(&client->dev, "%s: i2c recv failed\n", __func__); - return -EIO; + if (wait) { + /* + * In application update mode, the interrupt + * line signals state transitions. We must wait for the + * CHG assertion before reading the status byte. + * Once the status byte has been read, the line is deasserted. + */ + ret = mxt_wait_for_completion(data, &data->bl_completion, + MXT_FW_CHG_TIMEOUT); + if (ret) { + /* + * TODO: handle -ERESTARTSYS better by terminating + * fw update process before returning to userspace + * by writing length 0x000 to device (iff we are in + * WAITING_FRAME_DATA state). + */ + dev_err(dev, "Update wait error %d\n", ret); + return ret; + } } + ret = mxt_bootloader_read(data, &val, 1); + if (ret) + return ret; + + if (state == MXT_WAITING_BOOTLOAD_CMD) + val = mxt_get_bootloader_version(data, val); + switch (state) { case MXT_WAITING_BOOTLOAD_CMD: 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) + if (val == MXT_FRAME_CRC_CHECK) { goto recheck; + } else if (val == MXT_FRAME_CRC_FAIL) { + dev_err(dev, "Bootloader CRC fail\n"); + return -EINVAL; + } break; default: return -EINVAL; } if (val != state) { - dev_err(&client->dev, "Unvalid bootloader mode state\n"); + dev_err(dev, "Invalid bootloader state %02X != %02X\n", + val, state); return -EINVAL; } return 0; } -static int mxt_unlock_bootloader(struct i2c_client *client) +static int mxt_send_bootloader_cmd(struct mxt_data *data, bool unlock) { + int ret; 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; + if (unlock) { + buf[0] = MXT_UNLOCK_CMD_LSB; + buf[1] = MXT_UNLOCK_CMD_MSB; + } else { + buf[0] = 0x01; + buf[1] = 0x01; } - 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; - } + ret = mxt_bootloader_write(data, buf, 2); + if (ret) + return ret; return 0; } @@ -486,86 +607,70 @@ static int mxt_fw_write(struct i2c_client *client, static int __mxt_read_reg(struct i2c_client *client, u16 reg, u16 len, void *val) { + struct i2c_msg xfer[2]; u8 buf[2]; - int retval = 0; - struct mxt_data *data = i2c_get_clientdata(client); + int ret; buf[0] = reg & 0xff; buf[1] = (reg >> 8) & 0xff; - mutex_lock(&data->access_mutex); - - if ((data->last_address != reg) || (reg != data->msg_address)) { - if (i2c_master_send(client, (u8 *)buf, 2) != 2) { - dev_dbg(&client->dev, "i2c retry\n"); - msleep(MXT_WAKEUP_TIME); - - if (i2c_master_send(client, (u8 *)buf, 2) != 2) { - dev_err(&client->dev, "%s: i2c send failed\n", - __func__); - retval = -EIO; - goto mxt_read_exit; - } - } - } - - if (i2c_master_recv(client, (u8 *)val, len) != len) { - dev_dbg(&client->dev, "i2c retry\n"); - msleep(MXT_WAKEUP_TIME); - - if (i2c_master_recv(client, (u8 *)val, len) != len) { - dev_err(&client->dev, "%s: i2c recv failed\n", - __func__); - retval = -EIO; - goto mxt_read_exit; - } + /* 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; + ret = i2c_transfer(client->adapter, xfer, 2); + if (ret == 2) { + ret = 0; + } else { + if (ret >= 0) + ret = -EIO; + dev_err(&client->dev, "%s: i2c transfer failed (%d)\n", + __func__, ret); } - data->last_address = reg; - -mxt_read_exit: - mutex_unlock(&data->access_mutex); - return retval; + return ret; } -static int mxt_read_reg(struct i2c_client *client, u16 reg, u8 *val) +static int __mxt_write_reg(struct i2c_client *client, u16 reg, u16 len, + const void *val) { - return __mxt_read_reg(client, reg, 1, val); -} + u8 *buf; + size_t count; + int ret; -static int mxt_write_reg(struct i2c_client *client, u16 reg, u8 val) -{ - u8 buf[3]; - int retval = 0; - struct mxt_data *data = i2c_get_clientdata(client); + count = len + 2; + buf = kmalloc(count, GFP_KERNEL); + if (!buf) + return -ENOMEM; buf[0] = reg & 0xff; buf[1] = (reg >> 8) & 0xff; - buf[2] = val; - - mutex_lock(&data->access_mutex); - if (i2c_master_send(client, buf, 3) != 3) { - dev_dbg(&client->dev, "i2c retry\n"); - msleep(MXT_WAKEUP_TIME); + memcpy(&buf[2], val, len); - if (i2c_master_send(client, buf, 3) != 3) { - dev_err(&client->dev, "%s: i2c send failed\n", __func__); - retval = -EIO; - goto mxt_write_exit; - } + ret = i2c_master_send(client, buf, count); + if (ret == count) { + ret = 0; + } else { + if (ret >= 0) + ret = -EIO; + dev_err(&client->dev, "%s: i2c send failed (%d)\n", + __func__, ret); } - data->last_address = reg + 1; -mxt_write_exit: - mutex_unlock(&data->access_mutex); - return retval; + kfree(buf); + return ret; } -static int mxt_read_object_table(struct i2c_client *client, - u16 reg, u8 *object_buf) +static int mxt_write_reg(struct i2c_client *client, u16 reg, u8 val) { - return __mxt_read_reg(client, reg, MXT_OBJECT_SIZE, - object_buf); + return __mxt_write_reg(client, reg, 1, &val); } static struct mxt_object * @@ -580,37 +685,41 @@ mxt_get_object(struct mxt_data *data, u8 type) return object; } - dev_err(&data->client->dev, "Invalid object type T%d\n", type); + dev_warn(&data->client->dev, "Invalid object type T%u\n", type); return NULL; } -static int mxt_read_message(struct mxt_data *data, - struct mxt_message *message) +static void mxt_proc_t6_messages(struct mxt_data *data, u8 *msg) { - 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); -} + struct device *dev = &data->client->dev; + u8 status = msg[1]; + u32 crc = msg[2] | (msg[3] << 8) | (msg[4] << 16); -static int mxt_read_object(struct mxt_data *data, - u8 type, u8 offset, u8 *val) -{ - struct mxt_object *object; - u16 reg; + complete(&data->crc_completion); - object = mxt_get_object(data, type); - if (!object) - return -EINVAL; + if (crc != data->config_crc) { + data->config_crc = crc; + dev_dbg(dev, "T6 Config Checksum: 0x%06X\n", crc); + } - reg = object->start_address; - return __mxt_read_reg(data->client, reg + offset, 1, val); + /* Detect reset */ + if (status & MXT_T6_STATUS_RESET) + complete(&data->reset_completion); + + /* Output debug if status has changed */ + if (status != data->t6_status) + dev_dbg(dev, "T6 Status 0x%02X%s%s%s%s%s%s%s\n", + status, + status == 0 ? " OK" : "", + status & MXT_T6_STATUS_RESET ? " RESET" : "", + status & MXT_T6_STATUS_OFL ? " OFL" : "", + status & MXT_T6_STATUS_SIGERR ? " SIGERR" : "", + status & MXT_T6_STATUS_CAL ? " CAL" : "", + status & MXT_T6_STATUS_CFGERR ? " CFGERR" : "", + status & MXT_T6_STATUS_COMSERR ? " COMSERR" : ""); + + /* Save current status */ + data->t6_status = status; } static int mxt_write_object(struct mxt_data *data, @@ -620,549 +729,1898 @@ static int mxt_write_object(struct mxt_data *data, u16 reg; object = mxt_get_object(data, type); - if (!object) + if (!object || offset >= mxt_obj_size(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) +static void mxt_input_button(struct mxt_data *data, u8 *message) { - 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; + struct input_dev *input = data->input_dev; + const struct mxt_platform_data *pdata = data->pdata; + int i; - for (id = 0; id < MXT_MAX_FINGER; id++) { - if (!finger[id].status) + for (i = 0; i < pdata->t19_num_keys; i++) { + if (pdata->t19_keymap[i] == KEY_RESERVED) 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].pressure); - 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); + /* Active-low switch */ + input_report_key(input, pdata->t19_keymap[i], + !(message[1] & BIT(i))); } +} - input_sync(input_dev); +static void mxt_input_sync(struct mxt_data *data) +{ + input_mt_report_pointer_emulation(data->input_dev, + data->pdata->t19_num_keys); + input_sync(data->input_dev); } -static void mxt_input_touchevent(struct mxt_data *data, - struct mxt_message *message, int id) +static void mxt_proc_t9_message(struct mxt_data *data, u8 *message) { - struct mxt_finger *finger = data->finger; struct device *dev = &data->client->dev; - u8 status = message->message[0]; + struct input_dev *input_dev = data->input_dev; + int id; + u8 status; int x; int y; int area; - int pressure; + int amplitude; - /* Check the touch is present on the screen */ - if (!(status & MXT_DETECT)) { - if (status & MXT_RELEASE) { - dev_dbg(dev, "[%d] released\n", id); + id = message[0] - data->T9_reportid_min; + status = message[1]; + x = (message[2] << 4) | ((message[4] >> 4) & 0xf); + y = (message[3] << 4) | ((message[4] & 0xf)); - finger[id].status = MXT_RELEASE; - finger[id].pressure = 0; - mxt_input_report(data, id); + /* Handle 10/12 bit switching */ + if (data->max_x < 1024) + x >>= 2; + if (data->max_y < 1024) + y >>= 2; + + area = message[5]; + amplitude = message[6]; + + dev_dbg(dev, + "[%u] %c%c%c%c%c%c%c%c x: %5u y: %5u area: %3u amp: %3u\n", + id, + (status & MXT_T9_DETECT) ? 'D' : '.', + (status & MXT_T9_PRESS) ? 'P' : '.', + (status & MXT_T9_RELEASE) ? 'R' : '.', + (status & MXT_T9_MOVE) ? 'M' : '.', + (status & MXT_T9_VECTOR) ? 'V' : '.', + (status & MXT_T9_AMP) ? 'A' : '.', + (status & MXT_T9_SUPPRESS) ? 'S' : '.', + (status & MXT_T9_UNGRIP) ? 'U' : '.', + x, y, area, amplitude); + + input_mt_slot(input_dev, id); + + if (status & MXT_T9_DETECT) { + /* + * Multiple bits may be set if the host is slow to read + * the status messages, indicating all the events that + * have happened. + */ + if (status & MXT_T9_RELEASE) { + input_mt_report_slot_state(input_dev, + MT_TOOL_FINGER, 0); + mxt_input_sync(data); } - return; + + /* Touch active */ + input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 1); + input_report_abs(input_dev, ABS_MT_POSITION_X, x); + input_report_abs(input_dev, ABS_MT_POSITION_Y, y); + input_report_abs(input_dev, ABS_MT_PRESSURE, amplitude); + input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, area); + } else { + /* Touch no longer active, close out slot */ + input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 0); } - /* Check only AMP detection */ - if (!(status & (MXT_PRESS | MXT_MOVE))) + data->update_input = true; +} + +static void mxt_proc_t100_message(struct mxt_data *data, u8 *message) +{ + struct device *dev = &data->client->dev; + struct input_dev *input_dev = data->input_dev; + int id; + u8 status; + u8 type = 0; + u16 x; + u16 y; + int distance = 0; + int tool = 0; + u8 major = 0; + u8 pressure = 0; + u8 orientation = 0; + + id = message[0] - data->T100_reportid_min - 2; + + /* ignore SCRSTATUS events */ + if (id < 0) return; - x = (message->message[1] << 4) | ((message->message[3] >> 4) & 0xf); - y = (message->message[2] << 4) | ((message->message[3] & 0xf)); - if (data->max_x < 1024) - x = x >> 2; - if (data->max_y < 1024) - y = y >> 2; + status = message[1]; + x = get_unaligned_le16(&message[2]); + y = get_unaligned_le16(&message[4]); - area = message->message[4]; - pressure = message->message[5]; + if (status & MXT_T100_DETECT) { + type = (status & MXT_T100_TYPE_MASK) >> 4; - if ((pressure <= 0) || (pressure > 255)) - pressure = MXT_DEFAULT_PRESSURE; + switch (type) { + case MXT_T100_TYPE_HOVERING_FINGER: + tool = MT_TOOL_FINGER; + distance = MXT_DISTANCE_HOVERING; - dev_dbg(dev, "[%d] %s x: %d, y: %d, area: %d\n", id, - status & MXT_MOVE ? "moved" : "pressed", - x, y, area); + if (data->t100_aux_vect) + orientation = message[data->t100_aux_vect]; - 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; + break; - trace_nvevent_irq_data_submit("mxt_input_touchevent"); - mxt_input_report(data, id); -} + case MXT_T100_TYPE_FINGER: + case MXT_T100_TYPE_GLOVE: + tool = MT_TOOL_FINGER; + distance = MXT_DISTANCE_ACTIVE_TOUCH; -static irqreturn_t mxt_interrupt(int irq, void *dev_id) -{ - struct mxt_data *data = dev_id; - struct mxt_message message; - struct mxt_object *touch_object; - struct device *dev = &data->client->dev; - int touchid; - u8 reportid; + if (data->t100_aux_area) + major = message[data->t100_aux_area]; - trace_nvevent_irq_data_read_start_series("mxt_input_interrupt"); - do { - trace_nvevent_irq_data_read_start_single("mxt_input_interrupt"); - if (mxt_read_message(data, &message)) { - dev_err(dev, "Failed to read message\n"); - goto end; - } - trace_nvevent_irq_data_read_finish_single( - "mxt_input_interrupt"); + if (data->t100_aux_ampl) + pressure = message[data->t100_aux_ampl]; - reportid = message.reportid; + if (data->t100_aux_vect) + orientation = message[data->t100_aux_vect]; - touch_object = mxt_get_object(data, MXT_TOUCH_MULTI_T9); - if (!touch_object) - goto end; + break; - if (data->debug_enabled) - print_hex_dump(KERN_DEBUG, "MXT MSG:", DUMP_PREFIX_NONE, - 16, 1, &message, sizeof(struct mxt_message), false); + case MXT_T100_TYPE_PASSIVE_STYLUS: + tool = MT_TOOL_PEN; - if (reportid >= touch_object->min_reportid - && reportid <= touch_object->max_reportid) { - touchid = reportid - touch_object->min_reportid; - mxt_input_touchevent(data, &message, touchid); - } else if (reportid != MXT_RPTID_NOMSG) - mxt_dump_message(dev, &message); - } while (reportid != MXT_RPTID_NOMSG); - trace_nvevent_irq_data_read_finish_series("mxt_input_interrupt"); + /* + * Passive stylus is reported with size zero so + * hardcode. + */ + major = MXT_TOUCH_MAJOR_DEFAULT; -end: - return IRQ_HANDLED; -} + if (data->t100_aux_ampl) + pressure = message[data->t100_aux_ampl]; -static int mxt_make_highchg(struct mxt_data *data) -{ - struct device *dev = &data->client->dev; - struct mxt_message message; - int count = 30; - int error; + break; - /* Read dummy message to make high CHG pin */ - do { - error = mxt_read_message(data, &message); - if (error) - return error; - } while (message.reportid != MXT_RPTID_NOMSG && --count); + case MXT_T100_TYPE_LARGE_TOUCH: + /* Ignore suppressed touch */ + break; + + default: + dev_dbg(dev, "Unexpected T100 type\n"); + return; + } + } - if (!count) { - dev_err(dev, "CHG pin isn't cleared\n"); - return -EBUSY; + /* + * Values reported should be non-zero if tool is touching the + * device + */ + if (!pressure && type != MXT_T100_TYPE_HOVERING_FINGER) + pressure = MXT_PRESSURE_DEFAULT; + + input_mt_slot(input_dev, id); + + if (status & MXT_T100_DETECT) { + dev_dbg(dev, "test[%u] type:%u x:%u y:%u a:%02X p:%02X v:%02X\n", + id, type, x, y, major, pressure, orientation); + input_mt_report_slot_state(input_dev, tool, 1); + input_report_abs(input_dev, ABS_MT_POSITION_X, x); + input_report_abs(input_dev, ABS_MT_POSITION_Y, y); + input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, major); + input_report_abs(input_dev, ABS_MT_PRESSURE, pressure); + } else { + dev_dbg(dev, "[%u] release\n", id); + /* close out slot */ + input_mt_report_slot_state(input_dev, 0, 0); } - return 0; + input_sync(input_dev); + + data->update_input = true; } -static int mxt_check_reg_init(struct mxt_data *data) +static int mxt_proc_message(struct mxt_data *data, u8 *message) { - struct i2c_client *client = data->client; - const struct mxt_platform_data *pdata = data->pdata; - struct mxt_object *object; - struct mxt_message message; - struct device *dev = &data->client->dev; - int index = 0; - int timeout_counter = 0; - int i, j, config_offset; - int error; - unsigned long current_crc; - u8 command_register; + u8 report_id = message[0]; - if (!pdata->config) { - dev_dbg(dev, "No cfg data defined, skipping reg init\n"); + if (report_id == MXT_RPTID_NOMSG) return 0; + + if (report_id == data->T6_reportid) { + mxt_proc_t6_messages(data, message); + } else if (!data->input_dev) { + /* + * Do not report events if input device + * is not yet registered. + */ + mxt_dump_message(data, message); + } else if (report_id >= data->T9_reportid_min && + report_id <= data->T9_reportid_max) { + mxt_proc_t9_message(data, message); + } else if (report_id >= data->T100_reportid_min && + report_id <= data->T100_reportid_max) { + mxt_proc_t100_message(data, message); + } else if (report_id == data->T19_reportid) { + mxt_input_button(data, message); + data->update_input = true; + } else { + mxt_dump_message(data, message); } - /* Try to read the config checksum of the existing cfg */ - mxt_write_object(data, MXT_GEN_COMMAND_T6, - MXT_COMMAND_REPORTALL, 1); - msleep(30); + return 1; +} + +static int mxt_read_and_process_messages(struct mxt_data *data, u8 count) +{ + struct device *dev = &data->client->dev; + int ret; + int i; + u8 num_valid = 0; + + /* Safety check for msg_buf */ + if (count > data->max_reportid) + return -EINVAL; + + /* Process remaining messages if necessary */ + ret = __mxt_read_reg(data->client, data->T5_address, + data->T5_msg_size * count, data->msg_buf); + if (ret) { + dev_err(dev, "Failed to read %u messages (%d)\n", count, ret); + return ret; + } + + for (i = 0; i < count; i++) { + ret = mxt_proc_message(data, + data->msg_buf + data->T5_msg_size * i); + + if (ret == 1) + num_valid++; + } + + /* return number of messages read */ + return num_valid; +} + +static irqreturn_t mxt_process_messages_t44(struct mxt_data *data) +{ + struct device *dev = &data->client->dev; + int ret; + u8 count, num_left; + + /* Read T44 and T5 together */ + ret = __mxt_read_reg(data->client, data->T44_address, + data->T5_msg_size + 1, data->msg_buf); + if (ret) { + dev_err(dev, "Failed to read T44 and T5 (%d)\n", ret); + return IRQ_NONE; + } + + count = data->msg_buf[0]; + + /* + * This condition may be caused by the CHG line being configured in + * Mode 0. It results in unnecessary I2C operations but it is benign. + */ + if (count == 0) + return IRQ_NONE; + + if (count > data->max_reportid) { + dev_warn(dev, "T44 count %d exceeded max report id\n", count); + count = data->max_reportid; + } + + /* Process first message */ + ret = mxt_proc_message(data, data->msg_buf + 1); + if (ret < 0) { + dev_warn(dev, "Unexpected invalid message\n"); + return IRQ_NONE; + } + + num_left = count - 1; + + /* Process remaining messages if necessary */ + if (num_left) { + ret = mxt_read_and_process_messages(data, num_left); + if (ret < 0) + goto end; + else if (ret != num_left) + dev_warn(dev, "Unexpected invalid message\n"); + } + +end: + if (data->update_input) { + mxt_input_sync(data); + data->update_input = false; + } + + return IRQ_HANDLED; +} + +static int mxt_process_messages_until_invalid(struct mxt_data *data) +{ + struct device *dev = &data->client->dev; + int count, read; + u8 tries = 2; + + count = data->max_reportid; + + /* Read messages until we force an invalid */ + do { + read = mxt_read_and_process_messages(data, count); + if (read < count) + return 0; + } while (--tries); + + if (data->update_input) { + mxt_input_sync(data); + data->update_input = false; + } + + dev_err(dev, "CHG pin isn't cleared\n"); + return -EBUSY; +} + +static irqreturn_t mxt_process_messages(struct mxt_data *data) +{ + int total_handled, num_handled; + u8 count = data->last_message_count; + + if (count < 1 || count > data->max_reportid) + count = 1; + + /* include final invalid message */ + total_handled = mxt_read_and_process_messages(data, count + 1); + if (total_handled < 0) + return IRQ_NONE; + /* if there were invalid messages, then we are done */ + else if (total_handled <= count) + goto update_count; + + /* keep reading two msgs until one is invalid or reportid limit */ + do { + num_handled = mxt_read_and_process_messages(data, 2); + if (num_handled < 0) + return IRQ_NONE; + + total_handled += num_handled; + + if (num_handled < 2) + break; + } while (total_handled < data->num_touchids); + +update_count: + data->last_message_count = total_handled; + + if (data->update_input) { + mxt_input_sync(data); + data->update_input = false; + } + + return IRQ_HANDLED; +} + +static irqreturn_t mxt_interrupt(int irq, void *dev_id) +{ + struct mxt_data *data = dev_id; + + if (data->in_bootloader) { + /* bootloader state transition completion */ + complete(&data->bl_completion); + return IRQ_HANDLED; + } + + if (!data->object_table) + return IRQ_HANDLED; + + if (data->T44_address) { + return mxt_process_messages_t44(data); + } else { + return mxt_process_messages(data); + } +} + +static int mxt_t6_command(struct mxt_data *data, u16 cmd_offset, + u8 value, bool wait) +{ + u16 reg; + u8 command_register; + int timeout_counter = 0; + int ret; + + reg = data->T6_address + cmd_offset; + + ret = mxt_write_reg(data->client, reg, value); + if (ret) + return ret; + + if (!wait) + return 0; + + do { + msleep(20); + ret = __mxt_read_reg(data->client, reg, 1, &command_register); + if (ret) + return ret; + } while (command_register != 0 && timeout_counter++ <= 100); + + if (timeout_counter > 100) { + dev_err(&data->client->dev, "Command failed!\n"); + return -EIO; + } + + return 0; +} + +static int mxt_acquire_irq(struct mxt_data *data) +{ + int error; + + enable_irq(data->irq); + + error = mxt_process_messages_until_invalid(data); + if (error) + return error; + + return 0; +} + +static int mxt_soft_reset(struct mxt_data *data) +{ + struct device *dev = &data->client->dev; + int ret = 0; + + dev_info(dev, "Resetting device\n"); + + disable_irq(data->irq); + + reinit_completion(&data->reset_completion); + + ret = mxt_t6_command(data, MXT_COMMAND_RESET, MXT_RESET_VALUE, false); + if (ret) + return ret; + + /* Ignore CHG line for 100ms after reset */ + msleep(100); + + mxt_acquire_irq(data); + + ret = mxt_wait_for_completion(data, &data->reset_completion, + MXT_RESET_TIMEOUT); + if (ret) + return ret; + + return 0; +} + +static void mxt_update_crc(struct mxt_data *data, u8 cmd, u8 value) +{ + /* + * On failure, CRC is set to 0 and config will always be + * downloaded. + */ + data->config_crc = 0; + reinit_completion(&data->crc_completion); + + mxt_t6_command(data, cmd, value, true); + + /* + * Wait for crc message. On failure, CRC is set to 0 and config will + * always be downloaded. + */ + mxt_wait_for_completion(data, &data->crc_completion, MXT_CRC_TIMEOUT); +} + +static void mxt_calc_crc24(u32 *crc, u8 firstbyte, u8 secondbyte) +{ + static const unsigned int crcpoly = 0x80001B; + u32 result; + u32 data_word; + + data_word = (secondbyte << 8) | firstbyte; + result = ((*crc << 1) ^ data_word); + + if (result & 0x1000000) + result ^= crcpoly; + + *crc = result; +} + +static u32 mxt_calculate_crc(u8 *base, off_t start_off, off_t end_off) +{ + u32 crc = 0; + u8 *ptr = base + start_off; + u8 *last_val = base + end_off - 1; + + if (end_off < start_off) + return -EINVAL; + + while (ptr < last_val) { + mxt_calc_crc24(&crc, *ptr, *(ptr + 1)); + ptr += 2; + } + + /* if len is odd, fill the last byte with 0 */ + if (ptr == last_val) + mxt_calc_crc24(&crc, *ptr, 0); + + /* Mask to 24-bit */ + crc &= 0x00FFFFFF; + + return crc; +} + +static int mxt_prepare_cfg_mem(struct mxt_data *data, + const struct firmware *cfg, + unsigned int data_pos, + unsigned int cfg_start_ofs, + u8 *config_mem, + size_t config_mem_size) +{ + struct device *dev = &data->client->dev; + struct mxt_object *object; + unsigned int type, instance, size, byte_offset; + int offset; + int ret; + int i; + u16 reg; + u8 val; + + while (data_pos < cfg->size) { + /* Read type, instance, length */ + ret = sscanf(cfg->data + data_pos, "%x %x %x%n", + &type, &instance, &size, &offset); + if (ret == 0) { + /* EOF */ + break; + } else if (ret != 3) { + dev_err(dev, "Bad format: failed to parse object\n"); + return -EINVAL; + } + data_pos += offset; + + object = mxt_get_object(data, type); + if (!object) { + /* Skip object */ + for (i = 0; i < size; i++) { + ret = sscanf(cfg->data + data_pos, "%hhx%n", + &val, &offset); + if (ret != 1) { + dev_err(dev, "Bad format in T%d at %d\n", + type, i); + return -EINVAL; + } + data_pos += offset; + } + continue; + } + + if (size > mxt_obj_size(object)) { + /* + * Either we are in fallback mode due to wrong + * config or config from a later fw version, + * or the file is corrupt or hand-edited. + */ + dev_warn(dev, "Discarding %zu byte(s) in T%u\n", + size - mxt_obj_size(object), type); + } else if (mxt_obj_size(object) > size) { + /* + * If firmware is upgraded, new bytes may be added to + * end of objects. It is generally forward compatible + * to zero these bytes - previous behaviour will be + * retained. However this does invalidate the CRC and + * will force fallback mode until the configuration is + * updated. We warn here but do nothing else - the + * malloc has zeroed the entire configuration. + */ + dev_warn(dev, "Zeroing %zu byte(s) in T%d\n", + mxt_obj_size(object) - size, type); + } + + if (instance >= mxt_obj_instances(object)) { + dev_err(dev, "Object instances exceeded!\n"); + return -EINVAL; + } + + reg = object->start_address + mxt_obj_size(object) * instance; + + for (i = 0; i < size; i++) { + ret = sscanf(cfg->data + data_pos, "%hhx%n", + &val, + &offset); + if (ret != 1) { + dev_err(dev, "Bad format in T%d at %d\n", + type, i); + return -EINVAL; + } + data_pos += offset; + + if (i > mxt_obj_size(object)) + continue; + + byte_offset = reg + i - cfg_start_ofs; + + if (byte_offset >= 0 && byte_offset < config_mem_size) { + *(config_mem + byte_offset) = val; + } else { + dev_err(dev, "Bad object: reg:%d, T%d, ofs=%d\n", + reg, object->type, byte_offset); + return -EINVAL; + } + } + } + + return 0; +} + +static int mxt_upload_cfg_mem(struct mxt_data *data, unsigned int cfg_start, + u8 *config_mem, size_t config_mem_size) +{ + unsigned int byte_offset = 0; + int error; + + /* Write configuration as blocks */ + while (byte_offset < config_mem_size) { + unsigned int size = config_mem_size - byte_offset; + + if (size > MXT_MAX_BLOCK_WRITE) + size = MXT_MAX_BLOCK_WRITE; + + error = __mxt_write_reg(data->client, + cfg_start + byte_offset, + size, config_mem + byte_offset); + if (error) { + dev_err(&data->client->dev, + "Config write error, ret=%d\n", error); + return error; + } + + byte_offset += size; + } + + return 0; +} + +static int mxt_init_t7_power_cfg(struct mxt_data *data); + +/* + * mxt_update_cfg - download configuration to chip + * + * Atmel Raw Config File Format + * + * The first four lines of the raw config file contain: + * 1) Version + * 2) Chip ID Information (first 7 bytes of device memory) + * 3) Chip Information Block 24-bit CRC Checksum + * 4) Chip Configuration 24-bit CRC Checksum + * + * The rest of the file consists of one line per object instance: + * + * + * - 2-byte object type as hex + * - 2-byte object instance number as hex + * - 2-byte object size as hex + * - array of 1-byte hex values + */ +static int mxt_update_cfg(struct mxt_data *data, const struct firmware *cfg) +{ + struct device *dev = &data->client->dev; + struct mxt_info cfg_info; + int ret; + int offset; + int data_pos; + int i; + int cfg_start_ofs; + u32 info_crc, config_crc, calculated_crc; + u8 *config_mem; + size_t config_mem_size; + + mxt_update_crc(data, MXT_COMMAND_REPORTALL, 1); + + if (strncmp(cfg->data, MXT_CFG_MAGIC, strlen(MXT_CFG_MAGIC))) { + dev_err(dev, "Unrecognised config file\n"); + return -EINVAL; + } + + data_pos = strlen(MXT_CFG_MAGIC); + + /* Load information block and check */ + for (i = 0; i < sizeof(struct mxt_info); i++) { + ret = sscanf(cfg->data + data_pos, "%hhx%n", + (unsigned char *)&cfg_info + i, + &offset); + if (ret != 1) { + dev_err(dev, "Bad format\n"); + return -EINVAL; + } + + data_pos += offset; + } + + if (cfg_info.family_id != data->info.family_id) { + dev_err(dev, "Family ID mismatch!\n"); + return -EINVAL; + } + + if (cfg_info.variant_id != data->info.variant_id) { + dev_err(dev, "Variant ID mismatch!\n"); + return -EINVAL; + } + + /* Read CRCs */ + ret = sscanf(cfg->data + data_pos, "%x%n", &info_crc, &offset); + if (ret != 1) { + dev_err(dev, "Bad format: failed to parse Info CRC\n"); + return -EINVAL; + } + data_pos += offset; + + ret = sscanf(cfg->data + data_pos, "%x%n", &config_crc, &offset); + if (ret != 1) { + dev_err(dev, "Bad format: failed to parse Config CRC\n"); + return -EINVAL; + } + data_pos += offset; + + /* + * The Info Block CRC is calculated over mxt_info and the object + * table. If it does not match then we are trying to load the + * configuration from a different chip or firmware version, so + * the configuration CRC is invalid anyway. + */ + if (info_crc == data->info_crc) { + if (config_crc == 0 || data->config_crc == 0) { + dev_info(dev, "CRC zero, attempting to apply config\n"); + } else if (config_crc == data->config_crc) { + dev_dbg(dev, "Config CRC 0x%06X: OK\n", + data->config_crc); + return 0; + } else { + dev_info(dev, "Config CRC 0x%06X: does not match file 0x%06X\n", + data->config_crc, config_crc); + } + } else { + dev_warn(dev, + "Warning: Info CRC error - device=0x%06X file=0x%06X\n", + data->info_crc, info_crc); + } + + /* Malloc memory to store configuration */ + cfg_start_ofs = MXT_OBJECT_START + + data->info.object_num * sizeof(struct mxt_object) + + MXT_INFO_CHECKSUM_SIZE; + config_mem_size = data->mem_size - cfg_start_ofs; + config_mem = kzalloc(config_mem_size, GFP_KERNEL); + if (!config_mem) { + dev_err(dev, "Failed to allocate memory\n"); + return -ENOMEM; + } + + ret = mxt_prepare_cfg_mem(data, cfg, data_pos, cfg_start_ofs, + config_mem, config_mem_size); + if (ret) + goto release_mem; + + /* Calculate crc of the received configs (not the raw config file) */ + if (data->T7_address < cfg_start_ofs) { + dev_err(dev, "Bad T7 address, T7addr = %x, config offset %x\n", + data->T7_address, cfg_start_ofs); + ret = 0; + goto release_mem; + } + + calculated_crc = mxt_calculate_crc(config_mem, + data->T7_address - cfg_start_ofs, + config_mem_size); + + if (config_crc > 0 && config_crc != calculated_crc) + dev_warn(dev, "Config CRC error, calculated=%06X, file=%06X\n", + calculated_crc, config_crc); + + ret = mxt_upload_cfg_mem(data, cfg_start_ofs, + config_mem, config_mem_size); + if (ret) + goto release_mem; + + mxt_update_crc(data, MXT_COMMAND_BACKUPNV, MXT_BACKUP_VALUE); + + ret = mxt_soft_reset(data); + if (ret) + goto release_mem; + + dev_info(dev, "Config successfully updated\n"); + + /* T7 config may have changed */ + mxt_init_t7_power_cfg(data); + +release_mem: + kfree(config_mem); + return ret; +} + +static int mxt_get_info(struct mxt_data *data) +{ + struct i2c_client *client = data->client; + struct mxt_info *info = &data->info; + int error; + + /* Read 7-byte info block starting at address 0 */ + error = __mxt_read_reg(client, 0, sizeof(*info), info); + + if (error) + return error; + + return 0; +} + +static void mxt_free_input_device(struct mxt_data *data) +{ + if (data->input_dev) { + input_unregister_device(data->input_dev); + data->input_dev = NULL; + } +} + +static void mxt_free_object_table(struct mxt_data *data) +{ +#ifdef CONFIG_TOUCHSCREEN_ATMEL_MXT_T37 + video_unregister_device(&data->dbg.vdev); + v4l2_device_unregister(&data->dbg.v4l2); +#endif + + kfree(data->object_table); + data->object_table = NULL; + kfree(data->msg_buf); + data->msg_buf = NULL; + data->T5_address = 0; + data->T5_msg_size = 0; + data->T6_reportid = 0; + data->T7_address = 0; + data->T9_reportid_min = 0; + data->T9_reportid_max = 0; + data->T19_reportid = 0; + data->T44_address = 0; + data->T100_reportid_min = 0; + data->T100_reportid_max = 0; + data->max_reportid = 0; +} + +static int mxt_get_object_table(struct mxt_data *data) +{ + struct i2c_client *client = data->client; + size_t table_size; + struct mxt_object *object_table; + int error; + int i; + u8 reportid; + u16 end_address; + + table_size = data->info.object_num * sizeof(struct mxt_object); + object_table = kzalloc(table_size, GFP_KERNEL); + if (!object_table) { + dev_err(&data->client->dev, "Failed to allocate memory\n"); + return -ENOMEM; + } + + error = __mxt_read_reg(client, MXT_OBJECT_START, table_size, + object_table); + if (error) { + kfree(object_table); + return error; + } + + /* Valid Report IDs start counting from 1 */ + reportid = 1; + data->mem_size = 0; + for (i = 0; i < data->info.object_num; i++) { + struct mxt_object *object = object_table + i; + u8 min_id, max_id; + + le16_to_cpus(&object->start_address); + + if (object->num_report_ids) { + min_id = reportid; + reportid += object->num_report_ids * + mxt_obj_instances(object); + max_id = reportid - 1; + } else { + min_id = 0; + max_id = 0; + } + + dev_dbg(&data->client->dev, + "T%u Start:%u Size:%zu Instances:%zu Report IDs:%u-%u\n", + object->type, object->start_address, + mxt_obj_size(object), mxt_obj_instances(object), + min_id, max_id); + + switch (object->type) { + case MXT_GEN_MESSAGE_T5: + if (data->info.family_id == 0x80 && + data->info.version < 0x20) { + /* + * On mXT224 firmware versions prior to V2.0 + * read and discard unused CRC byte otherwise + * DMA reads are misaligned. + */ + data->T5_msg_size = mxt_obj_size(object); + } else { + /* CRC not enabled, so skip last byte */ + data->T5_msg_size = mxt_obj_size(object) - 1; + } + data->T5_address = object->start_address; + break; + case MXT_GEN_COMMAND_T6: + data->T6_reportid = min_id; + data->T6_address = object->start_address; + break; + case MXT_GEN_POWER_T7: + data->T7_address = object->start_address; + break; + case MXT_TOUCH_MULTI_T9: + data->multitouch = MXT_TOUCH_MULTI_T9; + data->T9_reportid_min = min_id; + data->T9_reportid_max = max_id; + data->num_touchids = object->num_report_ids + * mxt_obj_instances(object); + break; + case MXT_SPT_MESSAGECOUNT_T44: + data->T44_address = object->start_address; + break; + case MXT_SPT_GPIOPWM_T19: + data->T19_reportid = min_id; + break; + case MXT_TOUCH_MULTITOUCHSCREEN_T100: + data->multitouch = MXT_TOUCH_MULTITOUCHSCREEN_T100; + data->T100_reportid_min = min_id; + data->T100_reportid_max = max_id; + /* first two report IDs reserved */ + data->num_touchids = object->num_report_ids - 2; + break; + } + + end_address = object->start_address + + mxt_obj_size(object) * mxt_obj_instances(object) - 1; + + if (end_address >= data->mem_size) + data->mem_size = end_address + 1; + } + + /* Store maximum reportid */ + data->max_reportid = reportid; + + /* If T44 exists, T5 position has to be directly after */ + if (data->T44_address && (data->T5_address != data->T44_address + 1)) { + dev_err(&client->dev, "Invalid T44 position\n"); + error = -EINVAL; + goto free_object_table; + } + + data->msg_buf = kcalloc(data->max_reportid, + data->T5_msg_size, GFP_KERNEL); + if (!data->msg_buf) { + dev_err(&client->dev, "Failed to allocate message buffer\n"); + error = -ENOMEM; + goto free_object_table; + } + + data->object_table = object_table; + + return 0; + +free_object_table: + mxt_free_object_table(data); + return error; +} + +static int mxt_read_t9_resolution(struct mxt_data *data) +{ + struct i2c_client *client = data->client; + int error; + struct t9_range range; + unsigned char orient; + struct mxt_object *object; + + object = mxt_get_object(data, MXT_TOUCH_MULTI_T9); + if (!object) + return -EINVAL; + + error = __mxt_read_reg(client, + object->start_address + MXT_T9_XSIZE, + sizeof(data->xsize), &data->xsize); + if (error) + return error; + + error = __mxt_read_reg(client, + object->start_address + MXT_T9_YSIZE, + sizeof(data->ysize), &data->ysize); + if (error) + return error; + + error = __mxt_read_reg(client, + object->start_address + MXT_T9_RANGE, + sizeof(range), &range); + if (error) + return error; + + data->max_x = get_unaligned_le16(&range.x); + data->max_y = get_unaligned_le16(&range.y); + + error = __mxt_read_reg(client, + object->start_address + MXT_T9_ORIENT, + 1, &orient); + if (error) + return error; + + data->xy_switch = orient & MXT_T9_ORIENT_SWITCH; + data->invertx = orient & MXT_T9_ORIENT_INVERTX; + data->inverty = orient & MXT_T9_ORIENT_INVERTY; + + return 0; +} + +static int mxt_read_t100_config(struct mxt_data *data) +{ + struct i2c_client *client = data->client; + int error; + struct mxt_object *object; + u16 range_x, range_y; + u8 cfg, tchaux; + u8 aux; + + object = mxt_get_object(data, MXT_TOUCH_MULTITOUCHSCREEN_T100); + if (!object) + return -EINVAL; + + /* read touchscreen dimensions */ + error = __mxt_read_reg(client, + object->start_address + MXT_T100_XRANGE, + sizeof(range_x), &range_x); + if (error) + return error; + + data->max_x = get_unaligned_le16(&range_x); + + error = __mxt_read_reg(client, + object->start_address + MXT_T100_YRANGE, + sizeof(range_y), &range_y); + if (error) + return error; + + data->max_y = get_unaligned_le16(&range_y); + + error = __mxt_read_reg(client, + object->start_address + MXT_T100_XSIZE, + sizeof(data->xsize), &data->xsize); + if (error) + return error; + + error = __mxt_read_reg(client, + object->start_address + MXT_T100_YSIZE, + sizeof(data->ysize), &data->ysize); + if (error) + return error; + + /* read orientation config */ + error = __mxt_read_reg(client, + object->start_address + MXT_T100_CFG1, + 1, &cfg); + if (error) + return error; + + data->xy_switch = cfg & MXT_T100_CFG_SWITCHXY; + data->invertx = cfg & MXT_T100_CFG_INVERTX; + data->inverty = cfg & MXT_T100_CFG_INVERTY; + + /* allocate aux bytes */ + error = __mxt_read_reg(client, + object->start_address + MXT_T100_TCHAUX, + 1, &tchaux); + if (error) + return error; + + aux = 6; + + if (tchaux & MXT_T100_TCHAUX_VECT) + data->t100_aux_vect = aux++; + + if (tchaux & MXT_T100_TCHAUX_AMPL) + data->t100_aux_ampl = aux++; + + if (tchaux & MXT_T100_TCHAUX_AREA) + data->t100_aux_area = aux++; + + dev_dbg(&client->dev, + "T100 aux mappings vect:%u ampl:%u area:%u\n", + data->t100_aux_vect, data->t100_aux_ampl, data->t100_aux_area); + + return 0; +} + +static int mxt_input_open(struct input_dev *dev); +static void mxt_input_close(struct input_dev *dev); + +static void mxt_set_up_as_touchpad(struct input_dev *input_dev, + struct mxt_data *data) +{ + const struct mxt_platform_data *pdata = data->pdata; + int i; + + input_dev->name = "Atmel maXTouch Touchpad"; + + __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); + + input_abs_set_res(input_dev, ABS_X, MXT_PIXELS_PER_MM); + input_abs_set_res(input_dev, ABS_Y, MXT_PIXELS_PER_MM); + input_abs_set_res(input_dev, ABS_MT_POSITION_X, + MXT_PIXELS_PER_MM); + input_abs_set_res(input_dev, ABS_MT_POSITION_Y, + MXT_PIXELS_PER_MM); + + for (i = 0; i < pdata->t19_num_keys; i++) + if (pdata->t19_keymap[i] != KEY_RESERVED) + input_set_capability(input_dev, EV_KEY, + pdata->t19_keymap[i]); +} + +static int mxt_initialize_input_device(struct mxt_data *data) +{ + const struct mxt_platform_data *pdata = data->pdata; + struct device *dev = &data->client->dev; + struct input_dev *input_dev; + int error; + unsigned int num_mt_slots; + + switch (data->multitouch) { + case MXT_TOUCH_MULTI_T9: + num_mt_slots = data->T9_reportid_max - data->T9_reportid_min + 1; + error = mxt_read_t9_resolution(data); + if (error) + dev_warn(dev, "Failed to initialize T9 resolution\n"); + break; + + case MXT_TOUCH_MULTITOUCHSCREEN_T100: + num_mt_slots = data->num_touchids; + error = mxt_read_t100_config(data); + if (error) + dev_warn(dev, "Failed to read T100 config\n"); + break; + + default: + dev_err(dev, "Invalid multitouch object\n"); + return -EINVAL; + } + + /* Handle default values and orientation switch */ + if (data->max_x == 0) + data->max_x = 1023; + + if (data->max_y == 0) + data->max_y = 1023; + + if (data->xy_switch) + swap(data->max_x, data->max_y); + + dev_info(dev, "Touchscreen size X%uY%u\n", data->max_x, data->max_y); + + /* Register input device */ + input_dev = input_allocate_device(); + if (!input_dev) { + dev_err(dev, "Failed to allocate memory\n"); + return -ENOMEM; + } + + input_dev->name = "Atmel maXTouch Touchscreen"; + input_dev->phys = data->phys; + input_dev->id.bustype = BUS_I2C; + input_dev->dev.parent = dev; + input_dev->open = mxt_input_open; + input_dev->close = mxt_input_close; + __set_bit(EV_ABS, input_dev->evbit); + __set_bit(EV_KEY, input_dev->evbit); + __set_bit(BTN_TOUCH, input_dev->keybit); + //input_set_capability(input_dev, EV_KEY, BTN_TOUCH); + + /* For single touch */ + input_set_abs_params(input_dev, ABS_X, 0, data->max_x, 0, 0); + input_set_abs_params(input_dev, ABS_Y, 0, data->max_y, 0, 0); + + if (data->multitouch == MXT_TOUCH_MULTI_T9 || + (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && + data->t100_aux_ampl)) { + input_set_abs_params(input_dev, ABS_PRESSURE, 0, 255, 0, 0); + } + + /* For multi touch */ + error = input_mt_init_slots(input_dev, num_mt_slots); + if (error) { + dev_err(dev, "Error %d initialising slots\n", error); + goto err_free_mem; + } + + if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100) { + input_set_abs_params(input_dev, ABS_MT_TOOL_TYPE, + 0, MT_TOOL_MAX, 0, 0); + input_set_abs_params(input_dev, ABS_MT_DISTANCE, + MXT_DISTANCE_ACTIVE_TOUCH, + MXT_DISTANCE_HOVERING, + 0, 0); + } + + input_set_abs_params(input_dev, ABS_MT_POSITION_X, + 0, data->max_x, 0, 0); + input_set_abs_params(input_dev, ABS_MT_POSITION_Y, + 0, data->max_y, 0, 0); + + if (data->multitouch == MXT_TOUCH_MULTI_T9 || + (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && + data->t100_aux_area)) { + input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, + 0, MXT_MAX_AREA, 0, 0); + } + + if (data->multitouch == MXT_TOUCH_MULTI_T9 || + (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && + data->t100_aux_ampl)) { + input_set_abs_params(input_dev, ABS_MT_PRESSURE, + 0, 255, 0, 0); + } + + if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && + data->t100_aux_vect) { + input_set_abs_params(input_dev, ABS_MT_ORIENTATION, + 0, 255, 0, 0); + } + + if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && + data->t100_aux_ampl) { + input_set_abs_params(input_dev, ABS_MT_PRESSURE, + 0, 255, 0, 0); + } + + if (data->multitouch == MXT_TOUCH_MULTITOUCHSCREEN_T100 && + data->t100_aux_vect) { + input_set_abs_params(input_dev, ABS_MT_ORIENTATION, + 0, 255, 0, 0); + } + + input_set_drvdata(input_dev, data); + + error = input_register_device(input_dev); + if (error) { + dev_err(dev, "Error %d registering input device\n", error); + goto err_free_mem; + } + + data->input_dev = input_dev; + + return 0; + +err_free_mem: + input_free_device(input_dev); + return error; +} + +static int mxt_configure_objects(struct mxt_data *data, + const struct firmware *cfg); + +static void mxt_config_cb(const struct firmware *cfg, void *ctx) +{ + mxt_configure_objects(ctx, cfg); + release_firmware(cfg); +} + +static int mxt_initialize(struct mxt_data *data) +{ + struct i2c_client *client = data->client; + int recovery_attempts = 0; + int error; + while (1) { + error = mxt_get_info(data); + if (!error) + break; + /* Check bootloader state */ + error = mxt_probe_bootloader(data, false); + if (error) { + dev_info(&client->dev, "Trying alternate bootloader address\n"); + error = mxt_probe_bootloader(data, true); + if (error) { + /* Chip is not in appmode or bootloader mode */ + return error; + } + } + /* OK, we are in bootloader, see if we can recover */ + if (++recovery_attempts > 1) { + dev_err(&client->dev, "Could not recover from bootloader mode\n"); + /* + * We can reflash from this state, so do not + * abort initialization. + */ + data->in_bootloader = true; + return 0; + } + + /* Attempt to exit bootloader into app mode */ + mxt_send_bootloader_cmd(data, false); + msleep(MXT_FW_RESET_TIME); + } + /* Get object table information */ + error = mxt_get_object_table(data); + if (error) { + dev_err(&client->dev, "Error %d reading object table\n", error); + return error; + } + error = mxt_acquire_irq(data); + if (error) + goto err_free_object_table; + + error = request_firmware_nowait(THIS_MODULE, true, MXT_CFG_NAME, + &client->dev, GFP_KERNEL, data, + mxt_config_cb); + if (error) { + dev_err(&client->dev, "Failed to invoke firmware loader: %d\n", + error); + goto err_free_object_table; + } + return 0; + +err_free_object_table: + mxt_free_object_table(data); + return error; +} - error = mxt_read_message(data, &message); +static int mxt_set_t7_power_cfg(struct mxt_data *data, u8 sleep) +{ + struct device *dev = &data->client->dev; + int error; + struct t7_config *new_config; + struct t7_config deepsleep = { .active = 0, .idle = 0 }; + + if (sleep == MXT_POWER_CFG_DEEPSLEEP) + new_config = &deepsleep; + else + new_config = &data->t7_cfg; + + error = __mxt_write_reg(data->client, data->T7_address, + sizeof(data->t7_cfg), new_config); if (error) return error; - object = mxt_get_object(data, MXT_GEN_COMMAND_T6); - if (!object) - return -EIO; + dev_dbg(dev, "Set T7 ACTV:%d IDLE:%d\n", + new_config->active, new_config->idle); - /* Check if this message is from command processor (which has - only one reporting ID), if so, bytes 1-3 are the checksum. */ - if (message.reportid == object->max_reportid) { - current_crc = message.message[1] | (message.message[2] << 8) | - (message.message[3] << 16); - } else { - dev_info(dev, "Couldn't retrieve the current cfg checksum, " - "forcing load\n"); - current_crc = 0xFFFFFFFF; + return 0; +} + +static int mxt_init_t7_power_cfg(struct mxt_data *data) +{ + struct device *dev = &data->client->dev; + int error; + bool retry = false; + +recheck: + error = __mxt_read_reg(data->client, data->T7_address, + sizeof(data->t7_cfg), &data->t7_cfg); + if (error) + return error; + + if (data->t7_cfg.active == 0 || data->t7_cfg.idle == 0) { + if (!retry) { + dev_dbg(dev, "T7 cfg zero, resetting\n"); + mxt_soft_reset(data); + retry = true; + goto recheck; + } else { + dev_dbg(dev, "T7 cfg zero after reset, overriding\n"); + data->t7_cfg.active = 20; + data->t7_cfg.idle = 100; + return mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN); + } } - dev_info(dev, - "Config CRC read from the mXT: %X\n", - (unsigned int) current_crc); - if (current_crc == pdata->config_crc) { - dev_info(dev, - "Matching CRC's, skipping CFG load.\n"); - return 0; + dev_dbg(dev, "Initialized power cfg: ACTV %d, IDLE %d\n", + data->t7_cfg.active, data->t7_cfg.idle); + return 0; +} + +#ifdef CONFIG_TOUCHSCREEN_ATMEL_MXT_T37 +static u16 mxt_get_debug_value(struct mxt_data *data, unsigned int x, + unsigned int y) +{ + struct mxt_info *info = &data->info; + struct mxt_dbg *dbg = &data->dbg; + unsigned int ofs, page; + unsigned int col = 0; + unsigned int col_width; + + if (info->family_id == MXT_FAMILY_1386) { + col_width = info->matrix_ysize / MXT1386_COLUMNS; + col = y / col_width; + y = y % col_width; } else { - dev_info(dev, "Doesn't match platform data config CRC (%X), " - "writing config from platform data...\n", - (unsigned int) pdata->config_crc); + col_width = info->matrix_ysize; } - for (i = 0; i < data->info.object_num; i++) { - object = data->object_table + i; + ofs = (y + (x * col_width)) * sizeof(u16); + page = ofs / MXT_DIAGNOSTIC_SIZE; + ofs %= MXT_DIAGNOSTIC_SIZE; - if (!mxt_object_writable(object->type)) - continue; - dev_info(dev, "Writing object type %d, config offset %d", data->object_table[i].type, index); - for (j = 0; - j < object->size * object->instances; - j++) { - config_offset = index + j; - if (config_offset > pdata->config_length) { - dev_err(dev, "Not enough config data!\n"); - dev_err(dev, "config base is %d, offset is %d\n", index, config_offset); - return -EINVAL; - } - mxt_write_object(data, object->type, j, - pdata->config[config_offset]); + if (info->family_id == MXT_FAMILY_1386) + page += col * MXT1386_PAGES_PER_COLUMN; + + return get_unaligned_le16(&dbg->t37_buf[page].data[ofs]); +} + +static int mxt_convert_debug_pages(struct mxt_data *data, u16 *outbuf) +{ + struct mxt_dbg *dbg = &data->dbg; + unsigned int x = 0; + unsigned int y = 0; + unsigned int i, rx, ry; + + for (i = 0; i < dbg->t37_nodes; i++) { + /* Handle orientation */ + rx = data->xy_switch ? y : x; + ry = data->xy_switch ? x : y; + rx = data->invertx ? (data->xsize - 1 - rx) : rx; + ry = data->inverty ? (data->ysize - 1 - ry) : ry; + + outbuf[i] = mxt_get_debug_value(data, rx, ry); + + /* Next value */ + if (++x >= (data->xy_switch ? data->ysize : data->xsize)) { + x = 0; + y++; } - index += object->size * object->instances; } - dev_info(dev, "Config written!"); - error = mxt_make_highchg(data); - if (error) - return error; + return 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; - msleep(10); - } while ((command_register != 0) && (timeout_counter++ <= 100)); - if (timeout_counter > 100) { - dev_err(&client->dev, "No response after backup!\n"); - return -EIO; - } +static int mxt_read_diagnostic_debug(struct mxt_data *data, u8 mode, + u16 *outbuf) +{ + struct mxt_dbg *dbg = &data->dbg; + int retries = 0; + int page; + int ret; + u8 cmd = mode; + struct t37_debug *p; + u8 cmd_poll; - /* Clear the interrupt line */ - error = mxt_make_highchg(data); - if (error) - return error; + for (page = 0; page < dbg->t37_pages; page++) { + p = dbg->t37_buf + page; - /* Soft reset */ - mxt_write_object(data, MXT_GEN_COMMAND_T6, - MXT_COMMAND_RESET, 1); - if (data->pdata->read_chg == NULL) { - msleep(MXT_RESET_NOCHGREAD); - } else { - switch (data->info.family_id) { - case MXT224_ID: - msleep(MXT224_RESET_TIME); - break; - case MXT768E_ID: - msleep(MXT768E_RESET_TIME); - break; - case MXT1386_ID: - msleep(MXT1386_RESET_TIME); - break; - default: - msleep(MXT_RESET_TIME); + ret = mxt_write_reg(data->client, dbg->diag_cmd_address, + cmd); + if (ret) + return ret; + + retries = 0; + msleep(20); +wait_cmd: + /* Read back command byte */ + ret = __mxt_read_reg(data->client, dbg->diag_cmd_address, + sizeof(cmd_poll), &cmd_poll); + if (ret) + return ret; + + /* Field is cleared once the command has been processed */ + if (cmd_poll) { + if (retries++ > 100) + return -EINVAL; + + msleep(20); + goto wait_cmd; } - timeout_counter = 0; - while ((timeout_counter++ <= 100) && data->pdata->read_chg()) - msleep(10); - if (timeout_counter > 100) { - dev_err(&client->dev, "No response after reset!\n"); - return -EIO; + + /* Read T37 page */ + ret = __mxt_read_reg(data->client, dbg->t37_address, + sizeof(struct t37_debug), p); + if (ret) + return ret; + + if (p->mode != mode || p->page != page) { + dev_err(&data->client->dev, "T37 page mismatch\n"); + return -EINVAL; } + + dev_dbg(&data->client->dev, "%s page:%d retries:%d\n", + __func__, page, retries); + + /* For remaining pages, write PAGEUP rather than mode */ + cmd = MXT_DIAGNOSTIC_PAGEUP; } - return 0; + return mxt_convert_debug_pages(data, outbuf); } - -static void mxt_handle_pdata(struct mxt_data *data) +static int mxt_queue_setup(struct vb2_queue *q, + unsigned int *nbuffers, unsigned int *nplanes, + unsigned int sizes[], struct device *alloc_devs[]) { - const struct mxt_platform_data *pdata = data->pdata; + struct mxt_data *data = q->drv_priv; + size_t size = data->dbg.t37_nodes * sizeof(u16); + + if (*nplanes) + return sizes[0] < size ? -EINVAL : 0; - if (pdata->read_chg != NULL) - data->read_chg = pdata->read_chg; + *nplanes = 1; + sizes[0] = size; + + return 0; } -static int mxt_set_power_cfg(struct mxt_data *data, u8 sleep) +static void mxt_buffer_queue(struct vb2_buffer *vb) { - struct device *dev = &data->client->dev; - int error; - u8 actv_cycle_time = 0; - u8 idle_cycle_time = 0; - u8 actv2idle_timeout = data->actv2idle_timeout; + struct mxt_data *data = vb2_get_drv_priv(vb->vb2_queue); + u16 *ptr; + int ret; + u8 mode; - if (!sleep) { - actv_cycle_time = data->actv_cycle_time; - idle_cycle_time = data->idle_cycle_time; + ptr = vb2_plane_vaddr(vb, 0); + if (!ptr) { + dev_err(&data->client->dev, "Error acquiring frame ptr\n"); + goto fault; } - error = mxt_write_object(data, MXT_GEN_POWER_T7, MXT_POWER_ACTVACQINT, - actv_cycle_time); - if (error) - goto i2c_error; + switch (data->dbg.input) { + case MXT_V4L_INPUT_DELTAS: + default: + mode = MXT_DIAGNOSTIC_DELTAS; + break; - error = mxt_write_object(data, MXT_GEN_POWER_T7, MXT_POWER_IDLEACQINT, - idle_cycle_time); - if (error) - goto i2c_error; + case MXT_V4L_INPUT_REFS: + mode = MXT_DIAGNOSTIC_REFS; + break; + } - error = mxt_write_object(data, MXT_GEN_POWER_T7, MXT_POWER_ACTV2IDLETO, - actv2idle_timeout); - if (error) - goto i2c_error; + ret = mxt_read_diagnostic_debug(data, mode, ptr); + if (ret) + goto fault; + + vb2_set_plane_payload(vb, 0, data->dbg.t37_nodes * sizeof(u16)); + vb2_buffer_done(vb, VB2_BUF_STATE_DONE); + return; + +fault: + vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); +} - dev_dbg(dev, "%s: Set ACTV %d, IDLE %d", __func__, - actv_cycle_time, idle_cycle_time); +/* V4L2 structures */ +static const struct vb2_ops mxt_queue_ops = { + .queue_setup = mxt_queue_setup, + .buf_queue = mxt_buffer_queue, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish, +}; + +static const struct vb2_queue mxt_queue = { + .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, + .io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF | VB2_READ, + .buf_struct_size = sizeof(struct mxt_vb2_buffer), + .ops = &mxt_queue_ops, + .mem_ops = &vb2_vmalloc_memops, + .timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC, + .min_buffers_needed = 1, +}; + +static int mxt_vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + struct mxt_data *data = video_drvdata(file); + strlcpy(cap->driver, "atmel_mxt_ts", sizeof(cap->driver)); + strlcpy(cap->card, "atmel_mxt_ts touch", sizeof(cap->card)); + snprintf(cap->bus_info, sizeof(cap->bus_info), + "I2C:%s", dev_name(&data->client->dev)); return 0; +} -i2c_error: - dev_err(dev, "Failed to set power cfg"); - return error; +static int mxt_vidioc_enum_input(struct file *file, void *priv, + struct v4l2_input *i) +{ + if (i->index >= MXT_V4L_INPUT_MAX) + return -EINVAL; + + i->type = V4L2_INPUT_TYPE_TOUCH; + + switch (i->index) { + case MXT_V4L_INPUT_REFS: + strlcpy(i->name, "Mutual Capacitance References", + sizeof(i->name)); + break; + case MXT_V4L_INPUT_DELTAS: + strlcpy(i->name, "Mutual Capacitance Deltas", sizeof(i->name)); + break; + } + + return 0; } -static int mxt_init_power_cfg(struct mxt_data *data) +static int mxt_set_input(struct mxt_data *data, unsigned int i) { - const struct mxt_platform_data *pdata = data->pdata; - struct device *dev = &data->client->dev; - int error; + struct v4l2_pix_format *f = &data->dbg.format; - data->slowscan_actv_cycle_time = 120; /* 120mS */ - data->slowscan_idle_cycle_time = 10; /* 10mS */ - data->slowscan_actv2idle_timeout = 100; /* 10 seconds */ - if (pdata->actv_cycle_time > 0 && pdata->idle_cycle_time > 0) { - data->actv_cycle_time = pdata->actv_cycle_time; - data->idle_cycle_time = pdata->idle_cycle_time; - } else { - error = mxt_read_object(data, MXT_GEN_POWER_T7, - MXT_POWER_ACTVACQINT, - &data->actv_cycle_time); + if (i >= MXT_V4L_INPUT_MAX) + return -EINVAL; - if (error) - return error; + if (i == MXT_V4L_INPUT_DELTAS) + f->pixelformat = V4L2_TCH_FMT_DELTA_TD16; + else + f->pixelformat = V4L2_TCH_FMT_TU16; - error = mxt_read_object(data, MXT_GEN_POWER_T7, - MXT_POWER_IDLEACQINT, - &data->idle_cycle_time); + f->width = data->xy_switch ? data->ysize : data->xsize; + f->height = data->xy_switch ? data->xsize : data->ysize; + f->field = V4L2_FIELD_NONE; + f->colorspace = V4L2_COLORSPACE_RAW; + f->bytesperline = f->width * sizeof(u16); + f->sizeimage = f->width * f->height * sizeof(u16); - if (error) - return error; - } + data->dbg.input = i; - error = mxt_read_object(data, MXT_GEN_POWER_T7, - MXT_POWER_ACTV2IDLETO, - &data->actv2idle_timeout); + return 0; +} - if (error) - return error; +static int mxt_vidioc_s_input(struct file *file, void *priv, unsigned int i) +{ + return mxt_set_input(video_drvdata(file), i); +} - /* On init, power up */ - error = mxt_set_power_cfg(data, 0); - if (error) - return error; +static int mxt_vidioc_g_input(struct file *file, void *priv, unsigned int *i) +{ + struct mxt_data *data = video_drvdata(file); - dev_info(dev, "Initialised power cfg: ACTV %d, IDLE %d", - data->actv_cycle_time, data->idle_cycle_time); + *i = data->dbg.input; return 0; } -static int mxt_get_info(struct mxt_data *data) +static int mxt_vidioc_fmt(struct file *file, void *priv, struct v4l2_format *f) { - struct i2c_client *client = data->client; - struct mxt_info *info = &data->info; - int error; - u8 val; + struct mxt_data *data = video_drvdata(file); - /* force send of address pointer on first read during probe */ - data->last_address = -1; + f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + f->fmt.pix = data->dbg.format; - error = mxt_read_reg(client, MXT_FAMILY_ID, &val); - if (error) - return error; - info->family_id = val; + return 0; +} - error = mxt_read_reg(client, MXT_VARIANT_ID, &val); - if (error) - return error; - info->variant_id = val; +static int mxt_vidioc_enum_fmt(struct file *file, void *priv, + struct v4l2_fmtdesc *fmt) +{ + if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; - error = mxt_read_reg(client, MXT_VERSION, &val); - if (error) - return error; - info->version = val; + switch (fmt->index) { + case 0: + fmt->pixelformat = V4L2_TCH_FMT_TU16; + break; - error = mxt_read_reg(client, MXT_BUILD, &val); - if (error) - return error; - info->build = val; + case 1: + fmt->pixelformat = V4L2_TCH_FMT_DELTA_TD16; + break; - error = mxt_read_reg(client, MXT_OBJECT_NUM, &val); - if (error) - return error; - info->object_num = val; + default: + return -EINVAL; + } return 0; } -static int mxt_get_object_table(struct mxt_data *data) +static int mxt_vidioc_g_parm(struct file *file, void *fh, + struct v4l2_streamparm *a) { - struct device *dev = &data->client->dev; - int error; - int i; - u16 reg; - u8 reportid = 0; - u8 buf[MXT_OBJECT_SIZE]; + if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; - for (i = 0; i < data->info.object_num; i++) { - struct mxt_object *object = data->object_table + i; + a->parm.capture.readbuffers = 1; + a->parm.capture.timeperframe.numerator = 1; + a->parm.capture.timeperframe.denominator = 10; + return 0; +} - reg = MXT_OBJECT_START + MXT_OBJECT_SIZE * i; - error = mxt_read_object_table(data->client, reg, buf); - if (error) - return error; +static const struct v4l2_ioctl_ops mxt_video_ioctl_ops = { + .vidioc_querycap = mxt_vidioc_querycap, - object->type = buf[0]; - object->start_address = (buf[2] << 8) | buf[1]; - object->size = buf[3] + 1; - object->instances = buf[4] + 1; - object->num_report_ids = buf[5]; + .vidioc_enum_fmt_vid_cap = mxt_vidioc_enum_fmt, + .vidioc_s_fmt_vid_cap = mxt_vidioc_fmt, + .vidioc_g_fmt_vid_cap = mxt_vidioc_fmt, + .vidioc_try_fmt_vid_cap = mxt_vidioc_fmt, + .vidioc_g_parm = mxt_vidioc_g_parm, - if (object->num_report_ids) { - reportid += object->num_report_ids * object->instances; - object->max_reportid = reportid; - object->min_reportid = object->max_reportid - - object->instances * object->num_report_ids + 1; - } + .vidioc_enum_input = mxt_vidioc_enum_input, + .vidioc_g_input = mxt_vidioc_g_input, + .vidioc_s_input = mxt_vidioc_s_input, - /* Store message window address so we don't have to - search the object table every time we read message */ - if (object->type == MXT_GEN_MESSAGE_T5) - data->msg_address = object->start_address; + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_expbuf = vb2_ioctl_expbuf, - dev_dbg(dev, "T%d, start:%d size:%d instances:%d " - "min_reportid:%d max_reportid:%d\n", - object->type, object->start_address, object->size, - object->instances, - object->min_reportid, object->max_reportid); - } + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, +}; - return 0; -} +static const struct video_device mxt_video_device = { + .name = "Atmel maxTouch", + .fops = &mxt_video_fops, + .ioctl_ops = &mxt_video_ioctl_ops, + .release = video_device_release_empty, + .device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TOUCH | + V4L2_CAP_READWRITE | V4L2_CAP_STREAMING, +}; -static int mxt_initialize(struct mxt_data *data) +static void mxt_debug_init(struct mxt_data *data) { - struct i2c_client *client = data->client; struct mxt_info *info = &data->info; + struct mxt_dbg *dbg = &data->dbg; + struct mxt_object *object; int error; - error = mxt_get_info(data); - if (error) - return error; + object = mxt_get_object(data, MXT_GEN_COMMAND_T6); + if (!object) + goto 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; - } + dbg->diag_cmd_address = object->start_address + MXT_COMMAND_DIAGNOSTIC; - /* Get object table information */ - error = mxt_get_object_table(data); - if (error) { - dev_err(&client->dev, "Failed to read object table\n"); - return error; + object = mxt_get_object(data, MXT_DEBUG_DIAGNOSTIC_T37); + if (!object) + goto error; + + if (mxt_obj_size(object) != sizeof(struct t37_debug)) { + dev_warn(&data->client->dev, "Bad T37 size"); + goto error; } - /* Load initial touch chip configuration */ - error = mxt_check_reg_init(data); + dbg->t37_address = object->start_address; + + /* Calculate size of data and allocate buffer */ + dbg->t37_nodes = data->xsize * data->ysize; + + if (info->family_id == MXT_FAMILY_1386) + dbg->t37_pages = MXT1386_COLUMNS * MXT1386_PAGES_PER_COLUMN; + else + dbg->t37_pages = DIV_ROUND_UP(data->xsize * + data->info.matrix_ysize * + sizeof(u16), + sizeof(dbg->t37_buf->data)); + + dbg->t37_buf = devm_kmalloc_array(&data->client->dev, dbg->t37_pages, + sizeof(struct t37_debug), GFP_KERNEL); + if (!dbg->t37_buf) + goto error; + + /* init channel to zero */ + mxt_set_input(data, 0); + + /* register video device */ + snprintf(dbg->v4l2.name, sizeof(dbg->v4l2.name), "%s", "atmel_mxt_ts"); + error = v4l2_device_register(&data->client->dev, &dbg->v4l2); + if (error) + goto error; + + /* initialize the queue */ + mutex_init(&dbg->lock); + dbg->queue = mxt_queue; + dbg->queue.drv_priv = data; + dbg->queue.lock = &dbg->lock; + dbg->queue.dev = &data->client->dev; + + error = vb2_queue_init(&dbg->queue); + if (error) + goto error_unreg_v4l2; + + dbg->vdev = mxt_video_device; + dbg->vdev.v4l2_dev = &dbg->v4l2; + dbg->vdev.lock = &dbg->lock; + dbg->vdev.vfl_dir = VFL_DIR_RX; + dbg->vdev.queue = &dbg->queue; + video_set_drvdata(&dbg->vdev, data); + + error = video_register_device(&dbg->vdev, VFL_TYPE_TOUCH, -1); + if (error) + goto error_unreg_v4l2; + + return; + +error_unreg_v4l2: + v4l2_device_unregister(&dbg->v4l2); +error: + dev_warn(&data->client->dev, "Error initializing T37\n"); +} +#else +static void mxt_debug_init(struct mxt_data *data) +{ +} +#endif + +static int mxt_configure_objects(struct mxt_data *data, + const struct firmware *cfg) +{ + struct device *dev = &data->client->dev; + struct mxt_info *info = &data->info; + int error; + + error = mxt_init_t7_power_cfg(data); if (error) { - dev_err(&client->dev, "Failed to initialize configuration\n"); + dev_err(dev, "Failed to initialize power cfg\n"); return error; } - mxt_handle_pdata(data); + if (cfg) { + error = mxt_update_cfg(data, cfg); + if (error) + dev_warn(dev, "Error %d updating config\n", error); + } - error = mxt_init_power_cfg(data); - if (error) { - dev_err(&client->dev, "Failed to initialize power cfg\n"); - return error; + if (data->multitouch) { + error = mxt_initialize_input_device(data); + if (error) + return error; + } else { + dev_warn(dev, "No touch object detected\n"); } - 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); + mxt_debug_init(data); - 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); + dev_info(dev, + "Family: %u Variant: %u Firmware V%u.%u.%02X Objects: %u\n", + info->family_id, info->variant_id, info->version >> 4, + info->version & 0xf, info->build, info->object_num); return 0; } -static void mxt_calc_resolution(struct mxt_data *data) +/* Firmware Version is returned as Major.Minor.Build */ +static ssize_t mxt_fw_version_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mxt_data *data = dev_get_drvdata(dev); + struct mxt_info *info = &data->info; + return scnprintf(buf, PAGE_SIZE, "%u.%u.%02X\n", + info->version >> 4, info->version & 0xf, info->build); +} + +/* Hardware Version is returned as FamilyID.VariantID */ +static ssize_t mxt_hw_version_show(struct device *dev, + struct device_attribute *attr, char *buf) { - unsigned int max_x = data->pdata->x_size - 1; - unsigned int max_y = data->pdata->y_size - 1; + struct mxt_data *data = dev_get_drvdata(dev); + struct mxt_info *info = &data->info; + return scnprintf(buf, PAGE_SIZE, "%u.%u\n", + info->family_id, info->variant_id); +} - if (data->pdata->orient & MXT_XY_SWITCH) { - data->max_x = max_y; - data->max_y = max_x; - } else { - data->max_x = max_x; - data->max_y = max_y; - } +static ssize_t mxt_show_instance(char *buf, int count, + struct mxt_object *object, int instance, + const u8 *val) +{ + int i; + + if (mxt_obj_instances(object) > 1) + count += scnprintf(buf + count, PAGE_SIZE - count, + "Instance %u\n", instance); + + for (i = 0; i < mxt_obj_size(object); i++) + count += scnprintf(buf + count, PAGE_SIZE - count, + "\t[%2u]: %02x (%d)\n", i, val[i], val[i]); + count += scnprintf(buf + count, PAGE_SIZE - count, "\n"); + + return count; } static ssize_t mxt_object_show(struct device *dev, @@ -1173,52 +2631,72 @@ static ssize_t mxt_object_show(struct device *dev, int count = 0; int i, j; int error; - u8 val; + u8 *obuf; + + /* Pre-allocate buffer large enough to hold max sized object. */ + obuf = kmalloc(256, GFP_KERNEL); + if (!obuf) + return -ENOMEM; + error = 0; 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; + if (!mxt_object_readable(object->type)) continue; - } - for (j = 0; j < object->size; j++) { - error = mxt_read_object(data, - object->type, j, &val); + count += scnprintf(buf + count, PAGE_SIZE - count, + "T%u:\n", object->type); + + for (j = 0; j < mxt_obj_instances(object); j++) { + u16 size = mxt_obj_size(object); + u16 addr = object->start_address + j * size; + + error = __mxt_read_reg(data->client, addr, size, obuf); if (error) - return error; + goto done; - count += snprintf(buf + count, PAGE_SIZE - count, - "\t[%2d]: %02x (%d)\n", j, val, val); - if (count >= PAGE_SIZE) - return PAGE_SIZE - 1; + count = mxt_show_instance(buf, count, object, j, obuf); } + } + +done: + kfree(obuf); + return error ?: count; +} + +static int mxt_check_firmware_format(struct device *dev, + const struct firmware *fw) +{ + unsigned int pos = 0; + char c; + + while (pos < fw->size) { + c = *(fw->data + pos); - count += snprintf(buf + count, PAGE_SIZE - count, "\n"); - if (count >= PAGE_SIZE) - return PAGE_SIZE - 1; + if (c < '0' || (c > '9' && c < 'A') || c > 'F') + return 0; + + pos++; } - return count; + /* + * To convert file try: + * xxd -r -p mXTXXX__APP_VX-X-XX.enc > maxtouch.fw + */ + dev_err(dev, "Aborting: firmware file must be in binary format\n"); + + return -EINVAL; } 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; + unsigned int retry = 0; + unsigned int frame = 0; int ret; ret = request_firmware(&fw, fn, dev); @@ -1227,59 +2705,108 @@ static int mxt_load_fw(struct device *dev, const char *fn) return ret; } - /* Change to the bootloader mode */ - mxt_write_object(data, MXT_GEN_COMMAND_T6, - MXT_COMMAND_RESET, MXT_BOOT_VALUE); - msleep(MXT_RESET_TIME); + /* Check for incorrect enc file */ + ret = mxt_check_firmware_format(dev, fw); + if (ret) + goto release_firmware; + + if (!data->in_bootloader) { + /* Change to the bootloader mode */ + data->in_bootloader = true; + + ret = mxt_t6_command(data, MXT_COMMAND_RESET, + MXT_BOOT_VALUE, false); + if (ret) + goto release_firmware; + + msleep(MXT_RESET_TIME); + + /* Do not need to scan since we know family ID */ + ret = mxt_lookup_bootloader_address(data, 0); + if (ret) + goto release_firmware; + + mxt_free_input_device(data); + mxt_free_object_table(data); + } else { + enable_irq(data->irq); + } - /* Change to slave address of bootloader */ - if (client->addr == MXT_APP_LOW) - client->addr = MXT_BOOT_LOW; - else - client->addr = MXT_BOOT_HIGH; + reinit_completion(&data->bl_completion); - ret = mxt_check_bootloader(client, MXT_WAITING_BOOTLOAD_CMD); - if (ret) - goto out; + ret = mxt_check_bootloader(data, MXT_WAITING_BOOTLOAD_CMD, false); + if (ret) { + /* Bootloader may still be unlocked from previous attempt */ + ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, false); + if (ret) + goto disable_irq; + } else { + dev_info(dev, "Unlocking bootloader\n"); - /* Unlock bootloader */ - mxt_unlock_bootloader(client); + /* Unlock bootloader */ + ret = mxt_send_bootloader_cmd(data, true); + if (ret) + goto disable_irq; + } while (pos < fw->size) { - ret = mxt_check_bootloader(client, - MXT_WAITING_FRAME_DATA); + ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, true); if (ret) - goto out; + goto disable_irq; 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. - */ + /* Take account of 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); + ret = mxt_bootloader_write(data, fw->data + pos, frame_size); if (ret) - goto out; + goto disable_irq; + + ret = mxt_check_bootloader(data, MXT_FRAME_CRC_PASS, true); + if (ret) { + retry++; - pos += frame_size; + /* Back off by 20ms per retry */ + msleep(retry * 20); - dev_dbg(dev, "Updated %d bytes / %zd bytes\n", pos, fw->size); + if (retry > 20) { + dev_err(dev, "Retry count exceeded\n"); + goto disable_irq; + } + } else { + retry = 0; + pos += frame_size; + frame++; + } + + if (frame % 50 == 0) + dev_dbg(dev, "Sent %d frames, %d/%zd bytes\n", + frame, pos, fw->size); } -out: - release_firmware(fw); + /* Wait for flash. */ + ret = mxt_wait_for_completion(data, &data->bl_completion, + MXT_FW_RESET_TIME); + if (ret) + goto disable_irq; - /* Change to slave address of application */ - if (client->addr == MXT_BOOT_LOW) - client->addr = MXT_APP_LOW; - else - client->addr = MXT_APP_HIGH; + dev_dbg(dev, "Sent %d frames, %d bytes\n", frame, pos); + + /* + * Wait for device to reset. Some bootloader versions do not assert + * the CHG line after bootloading has finished, so ignore potential + * errors. + */ + mxt_wait_for_completion(data, &data->bl_completion, MXT_FW_RESET_TIME); + + data->in_bootloader = false; +disable_irq: + disable_irq(data->irq); +release_firmware: + release_firmware(fw); return ret; } @@ -1290,486 +2817,365 @@ static ssize_t mxt_update_fw_store(struct device *dev, 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"); + dev_info(dev, "The firmware update succeeded\n"); - /* Wait for reset */ - msleep(MXT_FWRESET_TIME); - - kfree(data->object_table); - data->object_table = NULL; - - mxt_initialize(data); + error = mxt_initialize(data); + if (error) + return error; } - enable_irq(data->irq); - - error = mxt_make_highchg(data); - if (error) - return error; - return count; } -static ssize_t mxt_pause_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct mxt_data *data = dev_get_drvdata(dev); - int count = 0; +static DEVICE_ATTR(fw_version, S_IRUGO, mxt_fw_version_show, NULL); +static DEVICE_ATTR(hw_version, S_IRUGO, mxt_hw_version_show, NULL); +static DEVICE_ATTR(object, S_IRUGO, mxt_object_show, NULL); +static DEVICE_ATTR(update_fw, S_IWUSR, NULL, mxt_update_fw_store); - count += sprintf(buf + count, "%d", data->driver_paused); - count += sprintf(buf + count, "\n"); +static struct attribute *mxt_attrs[] = { + &dev_attr_fw_version.attr, + &dev_attr_hw_version.attr, + &dev_attr_object.attr, + &dev_attr_update_fw.attr, + NULL +}; - return count; -} +static const struct attribute_group mxt_attr_group = { + .attrs = mxt_attrs, +}; -static ssize_t mxt_pause_store(struct device *dev, - struct device_attribute *attr, const char *buf, size_t count) +static void mxt_start(struct mxt_data *data) { - struct mxt_data *data = dev_get_drvdata(dev); - int i; + switch (data->pdata->suspend_mode) { + case MXT_SUSPEND_T9_CTRL: + mxt_soft_reset(data); + + /* Touch enable */ + /* 0x83 = SCANEN | RPTEN | ENABLE */ + mxt_write_object(data, + MXT_TOUCH_MULTI_T9, MXT_T9_CTRL, 0x83); + break; - if (sscanf(buf, "%u", &i) == 1 && i < 2) { - data->driver_paused = i; + case MXT_SUSPEND_DEEP_SLEEP: + default: + mxt_set_t7_power_cfg(data, MXT_POWER_CFG_RUN); - dev_dbg(dev, "%s\n", i ? "paused" : "unpaused"); - } else { - dev_dbg(dev, "pause_driver write error\n"); + /* Recalibrate since chip has been in deep sleep */ + mxt_t6_command(data, MXT_COMMAND_CALIBRATE, 1, false); + break; } - return count; -} - -static ssize_t mxt_debug_enable_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct mxt_data *data = dev_get_drvdata(dev); - int count = 0; - - count += sprintf(buf + count, "%d", data->debug_enabled); - count += sprintf(buf + count, "\n"); - return count; } -static ssize_t mxt_debug_enable_store(struct device *dev, - struct device_attribute *attr, const char *buf, size_t count) +static void mxt_stop(struct mxt_data *data) { - struct mxt_data *data = dev_get_drvdata(dev); - int i; - - if (sscanf(buf, "%u", &i) == 1 && i < 2) { - data->debug_enabled = i; + switch (data->pdata->suspend_mode) { + case MXT_SUSPEND_T9_CTRL: + /* Touch disable */ + mxt_write_object(data, + MXT_TOUCH_MULTI_T9, MXT_T9_CTRL, 0); + break; - dev_dbg(dev, "%s\n", i ? "debug enabled" : "debug disabled"); - } else { - dev_dbg(dev, "debug_enabled write error\n"); + case MXT_SUSPEND_DEEP_SLEEP: + default: + mxt_set_t7_power_cfg(data, MXT_POWER_CFG_DEEPSLEEP); + break; } - return count; } -static ssize_t mxt_slowscan_show(struct device *dev, - struct device_attribute *attr, char *buf) +static int mxt_input_open(struct input_dev *dev) { - struct mxt_data *data = dev_get_drvdata(dev); - int count = 0; - int error; - u8 actv_cycle_time; - u8 idle_cycle_time; - u8 actv2idle_timeout; - dev_info(dev, "Calling mxt_slowscan_show()\n"); - - error = mxt_read_object(data, MXT_GEN_POWER_T7, - MXT_POWER_ACTVACQINT, - &actv_cycle_time); - - if (error) - return error; - - error = mxt_read_object(data, MXT_GEN_POWER_T7, - MXT_POWER_IDLEACQINT, - &idle_cycle_time); - - if (error) - return error; - - error = mxt_read_object(data, MXT_GEN_POWER_T7, - MXT_POWER_ACTV2IDLETO, - &actv2idle_timeout); - - if (error) - return error; + struct mxt_data *data = input_get_drvdata(dev); - count += sprintf(buf + count, "SLOW SCAN (enable/disable) = %s.\n", data->slowscan_enabled ? "enabled" : "disabled"); - count += sprintf(buf + count, "SLOW SCAN (actv_cycle_time) = %umS.\n", data->slowscan_actv_cycle_time); - count += sprintf(buf + count, "SLOW SCAN (idle_cycle_time) = %umS.\n", data->slowscan_idle_cycle_time); - count += sprintf(buf + count, "SLOW SCAN (actv2idle_timeout) = %u.%0uS.\n", data->slowscan_actv2idle_timeout / 10, \ - data->slowscan_actv2idle_timeout % 10); - count += sprintf(buf + count, "CURRENT (actv_cycle_time) = %umS.\n", actv_cycle_time); - count += sprintf(buf + count, "CURRENT (idle_cycle_time) = %umS.\n", idle_cycle_time); - count += sprintf(buf + count, "CURRENT (actv2idle_timeout) = %u.%0uS.\n", actv2idle_timeout / 10, \ - actv2idle_timeout % 10); + mxt_start(data); - return count; + return 0; } -static ssize_t mxt_slowscan_store(struct device *dev, - struct device_attribute *attr, const char *buf, size_t count) +static void mxt_input_close(struct input_dev *dev) { - struct mxt_data *data = dev_get_drvdata(dev); - int fn; - int val; - int ret; - - dev_info(dev, "Calling mxt_slowscan_store()\n"); - ret = sscanf(buf, "%u %u", &fn, &val); - if ((ret == 1) || (ret == 2)) { - switch (fn) { - case SLOSCAN_DISABLE: - if (data->slowscan_enabled) { - data->actv_cycle_time = data->slowscan_shad_actv_cycle_time; - data->idle_cycle_time = data->slowscan_shad_idle_cycle_time; - data->actv2idle_timeout = data->slowscan_shad_actv2idle_timeout; - data->slowscan_enabled = 0; - mxt_set_power_cfg(data, 0); - } - break; - - case SLOSCAN_ENABLE: - if (!data->slowscan_enabled) { - data->slowscan_shad_actv_cycle_time = data->actv_cycle_time; - data->slowscan_shad_idle_cycle_time = data->idle_cycle_time; - data->slowscan_shad_actv2idle_timeout = data->actv2idle_timeout; - data->actv_cycle_time = data->slowscan_actv_cycle_time; - data->idle_cycle_time = data->slowscan_idle_cycle_time; - data->actv2idle_timeout = data->slowscan_actv2idle_timeout; - data->slowscan_enabled = 1; - mxt_set_power_cfg(data, 0); - } - break; - - case SLOSCAN_SET_ACTVACQINT: - data->slowscan_actv_cycle_time = val; - break; - - case SLOSCAN_SET_IDLEACQINT: - data->slowscan_idle_cycle_time = val; - break; + struct mxt_data *data = input_get_drvdata(dev); - case SLOSCAN_SET_ACTV2IDLETO: - data->slowscan_actv2idle_timeout = val; - break; - } - } - return count; + mxt_stop(data); } -static ssize_t mxt_mem_access_read(struct file *filp, struct kobject *kobj, - struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count) +#ifdef CONFIG_OF +static const struct mxt_platform_data *mxt_parse_dt(struct i2c_client *client) { - struct device *dev = container_of(kobj, struct device, kobj); - struct mxt_data *data = dev_get_drvdata(dev); - int ret = 0; - - if (off >= 32768) - return -EIO; - - if (off + count > 32768) - count = 32768 - off; - - if (count > 256) - count = 256; - - if (count > 0) - ret = __mxt_read_reg(data->client, off, count, buf); + struct mxt_platform_data *pdata; + struct device_node *np = client->dev.of_node; + u32 *keymap; + int proplen, ret; - return ret == 0 ? count : ret; -} + if (!np) + return ERR_PTR(-ENOENT); -int mxt_write_block(struct i2c_client *client, u16 addr, u16 length, u8 *value) -{ - int i; - struct { - __le16 le_addr; - u8 data[256]; - } i2c_block_transfer; + pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return ERR_PTR(-ENOMEM); - if (length > 256) - return -EINVAL; + if (of_find_property(np, "linux,gpio-keymap", &proplen)) { + pdata->t19_num_keys = proplen / sizeof(u32); - i2c_get_clientdata(client); + keymap = devm_kzalloc(&client->dev, + pdata->t19_num_keys * sizeof(keymap[0]), + GFP_KERNEL); + if (!keymap) + return ERR_PTR(-ENOMEM); - for (i = 0; i < length; i++) - i2c_block_transfer.data[i] = *value++; + ret = of_property_read_u32_array(np, "linux,gpio-keymap", + keymap, pdata->t19_num_keys); + if (ret) + dev_warn(&client->dev, + "Couldn't read linux,gpio-keymap: %d\n", ret); - i2c_block_transfer.le_addr = cpu_to_le16(addr); + pdata->t19_keymap = keymap; + } - i = i2c_master_send(client, (u8 *) &i2c_block_transfer, length + 2); + pdata->suspend_mode = MXT_SUSPEND_DEEP_SLEEP; - if (i == (length + 2)) - return 0; - else - return -EIO; + return pdata; } - -static ssize_t mxt_mem_access_write(struct file *filp, struct kobject *kobj, - struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count) +#else +static const struct mxt_platform_data *mxt_parse_dt(struct i2c_client *client) { - struct device *dev = container_of(kobj, struct device, kobj); - struct mxt_data *data = dev_get_drvdata(dev); - int ret = 0; - - if (off >= 32768) - return -EIO; - - if (off + count > 32768) - count = 32768 - off; - - if (count > 256) - count = 256; - - if (count > 0) - ret = mxt_write_block(data->client, off, count, buf); - - return ret == 0 ? count : 0; + return ERR_PTR(-ENOENT); } +#endif -static DEVICE_ATTR(object, 0444, mxt_object_show, NULL); -static DEVICE_ATTR(update_fw, 0664, NULL, mxt_update_fw_store); -static DEVICE_ATTR(pause_driver, 0664, mxt_pause_show, mxt_pause_store); -static DEVICE_ATTR(debug_enable, 0664, mxt_debug_enable_show, mxt_debug_enable_store); -static DEVICE_ATTR(slowscan_enable, 0664, mxt_slowscan_show, mxt_slowscan_store); +#ifdef CONFIG_ACPI -static struct attribute *mxt_attrs[] = { - &dev_attr_object.attr, - &dev_attr_update_fw.attr, - &dev_attr_pause_driver.attr, - &dev_attr_debug_enable.attr, - &dev_attr_slowscan_enable.attr, - NULL +struct mxt_acpi_platform_data { + const char *hid; + struct mxt_platform_data pdata; }; -static const struct attribute_group mxt_attr_group = { - .attrs = mxt_attrs, +static unsigned int samus_touchpad_buttons[] = { + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + BTN_LEFT }; -static void mxt_start(struct mxt_data *data) -{ - int error = 0; - int cnt; - struct device *dev = &data->client->dev; - - dev_info(dev, "mxt_start: is_stopped = %d\n", data->is_stopped); - if (data->is_stopped == 0) - return; +static struct mxt_acpi_platform_data samus_platform_data[] = { + { + /* Touchpad */ + .hid = "ATML0000", + .pdata = { + .t19_num_keys = ARRAY_SIZE(samus_touchpad_buttons), + .t19_keymap = samus_touchpad_buttons, + }, + }, + { + /* Touchscreen */ + .hid = "ATML0001", + }, + { } +}; - /* Touch enable */ - cnt = ARRAY_SIZE(mxt_save); - while (cnt--) - error |= mxt_write_object(data, mxt_save[cnt].suspend_obj, - mxt_save[cnt].suspend_reg, - mxt_save[cnt].restore_val); +static unsigned int chromebook_tp_buttons[] = { + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + BTN_LEFT +}; - if (!error) - dev_info(dev, "MXT started\n"); +static struct mxt_acpi_platform_data chromebook_platform_data[] = { + { + /* Touchpad */ + .hid = "ATML0000", + .pdata = { + .t19_num_keys = ARRAY_SIZE(chromebook_tp_buttons), + .t19_keymap = chromebook_tp_buttons, + }, + }, + { + /* Touchscreen */ + .hid = "ATML0001", + }, + { } +}; - data->is_stopped = 0; -} +static const struct dmi_system_id mxt_dmi_table[] = { + { + /* 2015 Google Pixel */ + .ident = "Chromebook Pixel 2", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"), + DMI_MATCH(DMI_PRODUCT_NAME, "Samus"), + }, + .driver_data = samus_platform_data, + }, + { + /* Other Google Chromebooks */ + .ident = "Chromebook", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"), + }, + .driver_data = chromebook_platform_data, + }, + { } +}; -static void mxt_stop(struct mxt_data *data) +static const struct mxt_platform_data *mxt_parse_acpi(struct i2c_client *client) { - int error = 0; - int i, cnt; - struct device *dev = &data->client->dev; - - dev_info(dev, "mxt_stop: is_stopped = %d\n", data->is_stopped); - if (data->is_stopped) - return; - - /* Touch disable */ - cnt = ARRAY_SIZE(mxt_save); - for (i = 0; i < cnt; i++) { - if (mxt_save[i].suspend_flags == MXT_SUSPEND_DYNAMIC) - error |= mxt_read_object(data, - mxt_save[i].suspend_obj, - mxt_save[i].suspend_reg, - &mxt_save[i].restore_val); - error |= mxt_write_object(data, mxt_save[i].suspend_obj, - mxt_save[i].suspend_reg, - mxt_save[i].suspend_val); + struct acpi_device *adev; + const struct dmi_system_id *system_id; + const struct mxt_acpi_platform_data *acpi_pdata; + + /* + * Ignore ACPI devices representing bootloader mode. + * + * This is a bit of a hack: Google Chromebook BIOS creates ACPI + * devices for both application and bootloader modes, but we are + * interested in application mode only (if device is in bootloader + * mode we'll end up switching into application anyway). So far + * application mode addresses were all above 0x40, so we'll use it + * as a threshold. + */ + if (client->addr < 0x40) + return ERR_PTR(-ENXIO); + + adev = ACPI_COMPANION(&client->dev); + if (!adev) + return ERR_PTR(-ENOENT); + + system_id = dmi_first_match(mxt_dmi_table); + if (!system_id) + return ERR_PTR(-ENOENT); + + acpi_pdata = system_id->driver_data; + if (!acpi_pdata) + return ERR_PTR(-ENOENT); + + while (acpi_pdata->hid) { + if (!strcmp(acpi_device_hid(adev), acpi_pdata->hid)) + return &acpi_pdata->pdata; + + acpi_pdata++; } - if (!error) - dev_info(dev, "MXT suspended\n"); - - data->is_stopped = 1; + return ERR_PTR(-ENOENT); } +#else +static const struct mxt_platform_data *mxt_parse_acpi(struct i2c_client *client) +{ + return ERR_PTR(-ENOENT); +} +#endif -static int mxt_input_open(struct input_dev *dev) +static const struct mxt_platform_data * +mxt_get_platform_data(struct i2c_client *client) { - struct mxt_data *data = input_get_drvdata(dev); + const struct mxt_platform_data *pdata; - mxt_start(data); + pdata = dev_get_platdata(&client->dev); + if (pdata) + return pdata; - return 0; -} + pdata = mxt_parse_dt(client); + if (!IS_ERR(pdata) || PTR_ERR(pdata) != -ENOENT) + return pdata; -static void mxt_input_close(struct input_dev *dev) -{ - struct mxt_data *data = input_get_drvdata(dev); + pdata = mxt_parse_acpi(client); + if (!IS_ERR(pdata) || PTR_ERR(pdata) != -ENOENT) + return pdata; - mxt_stop(data); + dev_err(&client->dev, "No platform data specified\n"); + return ERR_PTR(-EINVAL); } -static int __devinit mxt_probe(struct i2c_client *client, - const struct i2c_device_id *id) +static int 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; + const struct mxt_platform_data *pdata; int error; - if (!pdata) - return -EINVAL; - + pdata = mxt_get_platform_data(client); + if (IS_ERR(pdata)) + return PTR_ERR(pdata); data = kzalloc(sizeof(struct mxt_data), GFP_KERNEL); - input_dev = input_allocate_device(); - if (!data || !input_dev) { + if (!data) { dev_err(&client->dev, "Failed to allocate memory\n"); - error = -ENOMEM; - goto err_free_mem; + return -ENOMEM; } - input_dev->name = "atmel-maxtouch"; - input_dev->id.bustype = BUS_I2C; - input_dev->dev.parent = &client->dev; - input_dev->open = mxt_input_open; - input_dev->close = mxt_input_close; + snprintf(data->phys, sizeof(data->phys), "i2c-%u-%04x/input0", + client->adapter->nr, client->addr); data->client = client; - data->input_dev = input_dev; data->pdata = pdata; data->irq = client->irq; - data->is_stopped = 0; - - mxt_calc_resolution(data); - - __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->max_x, 0, 0); - input_set_abs_params(input_dev, ABS_Y, - 0, data->max_y, 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->max_x, 0, 0); - input_set_abs_params(input_dev, ABS_MT_POSITION_Y, - 0, data->max_y, 0, 0); - input_set_abs_params(input_dev, ABS_MT_PRESSURE, - 0, 255, 0, 0); - - input_set_drvdata(input_dev, data); i2c_set_clientdata(client, data); - mutex_init(&data->access_mutex); - - error = mxt_initialize(data); - if (error) - goto err_free_object; + init_completion(&data->bl_completion); + init_completion(&data->reset_completion); + init_completion(&data->crc_completion); +#if 1 error = request_threaded_irq(client->irq, NULL, mxt_interrupt, - pdata->irqflags, client->dev.driver->name, data); + pdata->irqflags | IRQF_ONESHOT, + client->name, data); if (error) { dev_err(&client->dev, "Failed to register interrupt\n"); - goto err_free_object; + goto err_free_mem; } -#if defined(CONFIG_HAS_EARLYSUSPEND) - data->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1; - data->early_suspend.suspend = mxt_early_suspend; - data->early_suspend.resume = mxt_early_resume; - register_early_suspend(&data->early_suspend); + disable_irq(client->irq); #endif - 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) { - dev_err(&client->dev, "Failed to register input device\n"); + error = mxt_initialize(data); + if (error) goto err_free_irq; - } error = sysfs_create_group(&client->dev.kobj, &mxt_attr_group); if (error) { - dev_err(&client->dev, "Failed to create sysfs group\n"); - goto err_unregister_device; - } - - sysfs_bin_attr_init(&data->mem_access_attr); - data->mem_access_attr.attr.name = "mem_access"; - data->mem_access_attr.attr.mode = S_IRUGO | S_IWUSR | S_IWGRP; - data->mem_access_attr.read = mxt_mem_access_read; - data->mem_access_attr.write = mxt_mem_access_write; - data->mem_access_attr.size = 65535; - - if (sysfs_create_bin_file(&client->dev.kobj, &data->mem_access_attr) < 0) { - dev_err(&client->dev, "Failed to create %s\n", data->mem_access_attr.attr.name); - goto err_unregister_device; + dev_err(&client->dev, "Failure %d creating sysfs group\n", + error); + goto err_free_object; } return 0; -err_unregister_device: - input_unregister_device(input_dev); - input_dev = NULL; +err_free_object: + mxt_free_input_device(data); + mxt_free_object_table(data); err_free_irq: free_irq(client->irq, data); -err_free_object: - kfree(data->object_table); err_free_mem: - input_free_device(input_dev); kfree(data); return error; } -static int __devexit mxt_remove(struct i2c_client *client) +static int mxt_remove(struct i2c_client *client) { struct mxt_data *data = i2c_get_clientdata(client); - sysfs_remove_bin_file(&client->dev.kobj, &data->mem_access_attr); sysfs_remove_group(&client->dev.kobj, &mxt_attr_group); free_irq(data->irq, data); - input_unregister_device(data->input_dev); - kfree(data->object_table); + mxt_free_input_device(data); + mxt_free_object_table(data); kfree(data); return 0; } -#ifdef CONFIG_PM -static int mxt_suspend(struct device *dev) +static int __maybe_unused 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; + if (!input_dev) + return 0; + mutex_lock(&input_dev->mutex); if (input_dev->users) @@ -1780,16 +3186,14 @@ static int mxt_suspend(struct device *dev) return 0; } -static int mxt_resume(struct device *dev) +static int __maybe_unused 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; - /* Soft reset */ - mxt_write_object(data, MXT_GEN_COMMAND_T6, MXT_COMMAND_RESET, 1); - - msleep(MXT_RESET_TIME); + if (!input_dev) + return 0; mutex_lock(&input_dev->mutex); @@ -1801,43 +3205,19 @@ static int mxt_resume(struct device *dev) return 0; } -#if defined(CONFIG_HAS_EARLYSUSPEND) -static void mxt_early_suspend(struct early_suspend *es) -{ - struct mxt_data *mxt; - struct device *dev; - mxt = container_of(es, struct mxt_data, early_suspend); - dev = &mxt->client->dev; - dev_info(dev, "MXT Early Suspend entered\n"); - - if (mxt_suspend(&mxt->client->dev) != 0) - dev_err(&mxt->client->dev, "%s: failed\n", __func__); - dev_info(dev, "MXT Early Suspended\n"); -} - -static void mxt_early_resume(struct early_suspend *es) -{ - struct mxt_data *mxt; - struct device *dev; - mxt = container_of(es, struct mxt_data, early_suspend); - dev = &mxt->client->dev; - dev_info(dev, "MXT Early Resume entered\n"); +static SIMPLE_DEV_PM_OPS(mxt_pm_ops, mxt_suspend, mxt_resume); - if (mxt_resume(&mxt->client->dev) != 0) - dev_err(&mxt->client->dev, "%s: failed\n", __func__); - dev_info(dev, "MXT Early Resumed\n"); -} -#else -static const struct dev_pm_ops mxt_pm_ops = { - .suspend = mxt_suspend, - .resume = mxt_resume, +static const struct of_device_id mxt_of_match[] = { + { .compatible = "atmel,maxtouch", }, + {}, }; -#endif -#endif +MODULE_DEVICE_TABLE(of, mxt_of_match); static const struct i2c_device_id mxt_id[] = { { "qt602240_ts", 0 }, { "atmel_mxt_ts", 0 }, + { "atmel_mxt_tp", 0 }, + { "maxtouch", 0 }, { "mXT224", 0 }, { } }; @@ -1846,28 +3226,15 @@ MODULE_DEVICE_TABLE(i2c, mxt_id); static struct i2c_driver mxt_driver = { .driver = { .name = "atmel_mxt_ts", - .owner = THIS_MODULE, -#if defined(CONFIG_PM) && !defined(CONFIG_HAS_EARLYSUSPEND) + .of_match_table = of_match_ptr(mxt_of_match), .pm = &mxt_pm_ops, -#endif }, .probe = mxt_probe, - .remove = __devexit_p(mxt_remove), + .remove = 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_i2c_driver(mxt_driver); /* Module information */ MODULE_AUTHOR("Joonyoung Shim "); -- cgit v1.2.3