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Commit 2d484f10 authored by chenx's avatar chenx Committed by Fei Mao
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input: touchscreen: synaptics_tcm: add new touch driver 



This is the reference driver source code for Synaptics touch.

Change-Id: I6ad3cd7d3b4d1f0f38d788cdbebc1bbcd6500c93
Signed-off-by: default avatarchenx <chenxiang0527@thundersoft.com>
Git-commit: 9397899342e9aed76898cd7f1377a798d8ae3243
Git-repo: https://source.codeaurora.org/external/thundersoft/ihvjointlab/sensor-driver/log/?h=Synaptics_tcm_v1.3


Signed-off-by: default avatarFei Mao <feim1@codeaurora.org>
parent b318a6e0

drivers/input/touchscreen/synaptics_tcm/Kconfig

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#

# Synaptics TCM touchscreen driver configuration

#

menuconfig TOUCHSCREEN_SYNAPTICS_TCM

	bool "Synaptics TCM touchscreen"

	help

	  Say Y here if you have a Synaptics TCM touchscreen connected

	  to your system.



	  If unsure, say N.



if TOUCHSCREEN_SYNAPTICS_TCM



choice

	default TOUCHSCREEN_SYNAPTICS_TCM_I2C

	prompt "Synaptics TCM bus module"

config TOUCHSCREEN_SYNAPTICS_TCM_I2C

	bool "I2C"

	depends on I2C

	help

	  Say Y here to use I2C bus for communication.



	  Else, say N.



	  This will configure I2C bus for communicating

	  with touch controller.



config TOUCHSCREEN_SYNAPTICS_TCM_SPI

	bool "SPI"

	depends on SPI_MASTER

	help

	  Say Y here to use SPI bus for communication.



	  Else, say N.



	  This will configure SPI bus for communicating

	  with touch controller.



endchoice



config TOUCHSCREEN_SYNAPTICS_TCM_CORE

	tristate "Synaptics TCM core module"

	depends on I2C || SPI_MASTER

	help

	  Say Y here to enable core functionality.



	  If unsure, say N.



	  To compile this driver as a module, choose M here: the

	  module will be called synaptics_tcm_core.



config TOUCHSCREEN_SYNAPTICS_TCM_TOUCH

	tristate "Synaptics TCM touch module"

	depends on TOUCHSCREEN_SYNAPTICS_TCM_CORE

	help

	  Say Y here to enable support for touch reporting.



	  If unsure, say N.



	  To compile this driver as a module, choose M here: the

	  module will be called synaptics_tcm_touch.



config TOUCHSCREEN_SYNAPTICS_TCM_DEVICE

	tristate "Synaptics TCM device module"

	depends on TOUCHSCREEN_SYNAPTICS_TCM_CORE

	help

	  Say Y here to enable support for TCM device functionality.



	  If unsure, say N.



	  To compile this driver as a module, choose M here: the

	  module will be called synaptics_tcm_device.



config TOUCHSCREEN_SYNAPTICS_TCM_TESTING

	tristate "Synaptics TCM testing module"

	depends on TOUCHSCREEN_SYNAPTICS_TCM_CORE

	help

	  Say Y here to enable support for testing functionality.



	  If unsure, say N.



	  To compile this driver as a module, choose M here: the

	  module will be called synaptics_tcm_testing.



config TOUCHSCREEN_SYNAPTICS_TCM_REFLASH

	tristate "Synaptics TCM reflash module"

	depends on TOUCHSCREEN_SYNAPTICS_TCM_CORE

	help

	  Say Y here to enable support for reflash functionality.



	  If unsure, say N.



	  To compile this driver as a module, choose M here: the

	  module will be called synaptics_tcm_reflash.



config TOUCHSCREEN_SYNAPTICS_TCM_RECOVERY

	tristate "Synaptics TCM recovery module"

	depends on TOUCHSCREEN_SYNAPTICS_TCM_CORE

	help

	  Say Y here to enable support for recovery functionality.



	  If unsure, say N.



	  To compile this driver as a module, choose M here: the

	  module will be called synaptics_tcm_recovery.



config TOUCHSCREEN_SYNAPTICS_TCM_ZEROFLASH

	tristate "Synaptics TCM zeroflash module"

	depends on TOUCHSCREEN_SYNAPTICS_TCM_CORE

	help

	  Say Y here to enable support for ZeroFlash functionality.



	  If unsure, say N.



	  To compile this driver as a module, choose M here: the

	  module will be called synaptics_tcm_zeroflash.



config TOUCHSCREEN_SYNAPTICS_TCM_DIAGNOSTICS

	tristate "Synaptics TCM diagnostics module"

	depends on TOUCHSCREEN_SYNAPTICS_TCM_CORE

	help

	  Say Y here to enable support for diagnostics functionality.



	  If unsure, say N.



	  To compile this driver as a module, choose M here: the

	  module will be called synaptics_tcm_diagnostics.

endif

drivers/input/touchscreen/synaptics_tcm/Makefile

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#

# Makefile for the Synaptics TCM touchscreen driver.

#



# Each configuration option enables a list of files.



obj-$(CONFIG_TOUCHSCREEN_SYNAPTICS_TCM_SPI) += synaptics_tcm_spi.o

obj-$(CONFIG_TOUCHSCREEN_SYNAPTICS_TCM_I2C) += synaptics_tcm_i2c.o

obj-$(CONFIG_TOUCHSCREEN_SYNAPTICS_TCM_CORE) += synaptics_tcm_core.o

obj-$(CONFIG_TOUCHSCREEN_SYNAPTICS_TCM_TOUCH) += synaptics_tcm_touch.o

obj-$(CONFIG_TOUCHSCREEN_SYNAPTICS_TCM_DEVICE) += synaptics_tcm_device.o

obj-$(CONFIG_TOUCHSCREEN_SYNAPTICS_TCM_TESTING) += synaptics_tcm_testing.o

obj-$(CONFIG_TOUCHSCREEN_SYNAPTICS_TCM_REFLASH) += synaptics_tcm_reflash.o

obj-$(CONFIG_TOUCHSCREEN_SYNAPTICS_TCM_RECOVERY) += synaptics_tcm_recovery.o

obj-$(CONFIG_TOUCHSCREEN_SYNAPTICS_TCM_ZEROFLASH) += synaptics_tcm_zeroflash.o

obj-$(CONFIG_TOUCHSCREEN_SYNAPTICS_TCM_DIAGNOSTICS) += synaptics_tcm_diagnostics.o

drivers/input/touchscreen/synaptics_tcm/synaptics_tcm_core.c

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File added.

Preview size limit exceeded, changes collapsed.

drivers/input/touchscreen/synaptics_tcm/synaptics_tcm_core.h

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/*

 * Synaptics TCM touchscreen driver

 *

 * Copyright (C) 2017-2019 Synaptics Incorporated. All rights reserved.

 *

 * Copyright (C) 2017-2019 Scott Lin <scott.lin@tw.synaptics.com>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

 * GNU General Public License for more details.

 *

 * INFORMATION CONTAINED IN THIS DOCUMENT IS PROVIDED "AS-IS," AND SYNAPTICS

 * EXPRESSLY DISCLAIMS ALL EXPRESS AND IMPLIED WARRANTIES, INCLUDING ANY

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE,

 * AND ANY WARRANTIES OF NON-INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHTS.

 * IN NO EVENT SHALL SYNAPTICS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES ARISING OUT OF OR IN CONNECTION

 * WITH THE USE OF THE INFORMATION CONTAINED IN THIS DOCUMENT, HOWEVER CAUSED

 * AND BASED ON ANY THEORY OF LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

 * NEGLIGENCE OR OTHER TORTIOUS ACTION, AND EVEN IF SYNAPTICS WAS ADVISED OF

 * THE POSSIBILITY OF SUCH DAMAGE. IF A TRIBUNAL OF COMPETENT JURISDICTION DOES

 * NOT PERMIT THE DISCLAIMER OF DIRECT DAMAGES OR ANY OTHER DAMAGES, SYNAPTICS'

 * TOTAL CUMULATIVE LIABILITY TO ANY PARTY SHALL NOT EXCEED ONE HUNDRED U.S.

 * DOLLARS.

 */



#ifndef _SYNAPTICS_TCM_CORE_H_

#define _SYNAPTICS_TCM_CORE_H_



#include <linux/version.h>

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/input.h>

#include <linux/delay.h>

#include <linux/platform_device.h>

#include <linux/slab.h>

#include <linux/input/synaptics_tcm.h>

#ifdef CONFIG_DRM

#include <linux/msm_drm_notify.h>

#elif CONFIG_FB

#include <linux/fb.h>

#include <linux/notifier.h>

#endif

#include <uapi/linux/sched/types.h>



#define SYNAPTICS_TCM_ID_PRODUCT (1 << 0)

#define SYNAPTICS_TCM_ID_VERSION 0x0101

#define SYNAPTICS_TCM_ID_SUBVERSION 0



#define PLATFORM_DRIVER_NAME "synaptics_tcm"



#define TOUCH_INPUT_NAME "synaptics_tcm_touch"

#define TOUCH_INPUT_PHYS_PATH "synaptics_tcm/touch_input"



/* #define WAKEUP_GESTURE */



#define RD_CHUNK_SIZE 0 /* read length limit in bytes, 0 = unlimited */

#define WR_CHUNK_SIZE 0 /* write length limit in bytes, 0 = unlimited */



#define MESSAGE_HEADER_SIZE 4

#define MESSAGE_MARKER 0xa5

#define MESSAGE_PADDING 0x5a



#define LOGx(func, dev, log, ...) \

	func(dev, "%s: " log, __func__, ##__VA_ARGS__)



#define LOGy(func, dev, log, ...) \

	func(dev, "%s (line %d): " log, __func__, __LINE__, ##__VA_ARGS__)



#define LOGD(dev, log, ...) LOGx(dev_dbg, dev, log, ##__VA_ARGS__)

#define LOGI(dev, log, ...) LOGx(dev_info, dev, log, ##__VA_ARGS__)

#define LOGN(dev, log, ...) LOGx(dev_notice, dev, log, ##__VA_ARGS__)

#define LOGW(dev, log, ...) LOGy(dev_warn, dev, log, ##__VA_ARGS__)

#define LOGE(dev, log, ...) LOGy(dev_err, dev, log, ##__VA_ARGS__)



#define INIT_BUFFER(buffer, is_clone) \

	mutex_init(&buffer.buf_mutex); \

	buffer.clone = is_clone



#define LOCK_BUFFER(buffer) \

	mutex_lock(&buffer.buf_mutex)



#define UNLOCK_BUFFER(buffer) \

	mutex_unlock(&buffer.buf_mutex)



#define RELEASE_BUFFER(buffer) \

	do { \

		if (buffer.clone == false) { \

			kfree(buffer.buf); \

			buffer.buf_size = 0; \

			buffer.data_length = 0; \

		} \

	} while (0)



#define MAX(a, b) \

	({__typeof__(a) _a = (a); \

	__typeof__(b) _b = (b); \

	_a > _b ? _a : _b; })



#define MIN(a, b) \

	({__typeof__(a) _a = (a); \

	__typeof__(b) _b = (b); \

	_a < _b ? _a : _b; })



#define STR(x) #x



#define CONCAT(a, b) a##b



#define SHOW_PROTOTYPE(m_name, a_name) \

static ssize_t CONCAT(m_name##_sysfs, _##a_name##_show)(struct device *dev, \

		struct device_attribute *attr, char *buf); \

\

static struct device_attribute dev_attr_##a_name = \

		__ATTR(a_name, 0444, \

		CONCAT(m_name##_sysfs, _##a_name##_show), \

		syna_tcm_store_error)



#define STORE_PROTOTYPE(m_name, a_name) \

static ssize_t CONCAT(m_name##_sysfs, _##a_name##_store)(struct device *dev, \

		struct device_attribute *attr, const char *buf, size_t count); \

\

static struct device_attribute dev_attr_##a_name = \

		__ATTR(a_name, 0220, \

		syna_tcm_show_error, \

		CONCAT(m_name##_sysfs, _##a_name##_store))



#define SHOW_STORE_PROTOTYPE(m_name, a_name) \

static ssize_t CONCAT(m_name##_sysfs, _##a_name##_show)(struct device *dev, \

		struct device_attribute *attr, char *buf); \

\

static ssize_t CONCAT(m_name##_sysfs, _##a_name##_store)(struct device *dev, \

		struct device_attribute *attr, const char *buf, size_t count); \

\

static struct device_attribute dev_attr_##a_name = \

		__ATTR(a_name, 0664, \

		CONCAT(m_name##_sysfs, _##a_name##_show), \

		CONCAT(m_name##_sysfs, _##a_name##_store))



#define ATTRIFY(a_name) (&dev_attr_##a_name)



#define PINCTRL_STATE_ACTIVE    "pmx_ts_active"

#define PINCTRL_STATE_SUSPEND   "pmx_ts_suspend"

#define PINCTRL_STATE_RELEASE   "pmx_ts_release"



enum module_type {

	TCM_TOUCH = 0,

	TCM_DEVICE = 1,

	TCM_TESTING = 2,

	TCM_REFLASH = 3,

	TCM_RECOVERY = 4,

	TCM_ZEROFLASH = 5,

	TCM_DIAGNOSTICS = 6,

	TCM_LAST,

};



enum boot_mode {

	MODE_APPLICATION = 0x01,

	MODE_HOST_DOWNLOAD = 0x02,

	MODE_BOOTLOADER = 0x0b,

	MODE_TDDI_BOOTLOADER = 0x0c,

	MODE_PRODUCTION_TEST = 0x0e,

};



enum boot_status {

	BOOT_STATUS_OK = 0x00,

	BOOT_STATUS_BOOTING = 0x01,

	BOOT_STATUS_APP_BAD_DISPLAY_CRC = 0xfc,

	BOOT_STATUS_BAD_DISPLAY_CONFIG = 0xfd,

	BOOT_STATUS_BAD_APP_FIRMWARE = 0xfe,

	BOOT_STATUS_WARM_BOOT = 0xff,

};



enum app_status {

	APP_STATUS_OK = 0x00,

	APP_STATUS_BOOTING = 0x01,

	APP_STATUS_UPDATING = 0x02,

	APP_STATUS_BAD_APP_CONFIG = 0xff,

};



enum firmware_mode {

	FW_MODE_BOOTLOADER = 0,

	FW_MODE_APPLICATION = 1,

	FW_MODE_PRODUCTION_TEST = 2,

};



enum dynamic_config_id {

	DC_UNKNOWN = 0x00,

	DC_NO_DOZE,

	DC_DISABLE_NOISE_MITIGATION,

	DC_INHIBIT_FREQUENCY_SHIFT,

	DC_REQUESTED_FREQUENCY,

	DC_DISABLE_HSYNC,

	DC_REZERO_ON_EXIT_DEEP_SLEEP,

	DC_CHARGER_CONNECTED,

	DC_NO_BASELINE_RELAXATION,

	DC_IN_WAKEUP_GESTURE_MODE,

	DC_STIMULUS_FINGERS,

	DC_GRIP_SUPPRESSION_ENABLED,

	DC_ENABLE_THICK_GLOVE,

	DC_ENABLE_GLOVE,

};



enum command {

	CMD_NONE = 0x00,

	CMD_CONTINUE_WRITE = 0x01,

	CMD_IDENTIFY = 0x02,

	CMD_RESET = 0x04,

	CMD_ENABLE_REPORT = 0x05,

	CMD_DISABLE_REPORT = 0x06,

	CMD_GET_BOOT_INFO = 0x10,

	CMD_ERASE_FLASH = 0x11,

	CMD_WRITE_FLASH = 0x12,

	CMD_READ_FLASH = 0x13,

	CMD_RUN_APPLICATION_FIRMWARE = 0x14,

	CMD_SPI_MASTER_WRITE_THEN_READ = 0x15,

	CMD_REBOOT_TO_ROM_BOOTLOADER = 0x16,

	CMD_RUN_BOOTLOADER_FIRMWARE = 0x1f,

	CMD_GET_APPLICATION_INFO = 0x20,

	CMD_GET_STATIC_CONFIG = 0x21,

	CMD_SET_STATIC_CONFIG = 0x22,

	CMD_GET_DYNAMIC_CONFIG = 0x23,

	CMD_SET_DYNAMIC_CONFIG = 0x24,

	CMD_GET_TOUCH_REPORT_CONFIG = 0x25,

	CMD_SET_TOUCH_REPORT_CONFIG = 0x26,

	CMD_REZERO = 0x27,

	CMD_COMMIT_CONFIG = 0x28,

	CMD_DESCRIBE_DYNAMIC_CONFIG = 0x29,

	CMD_PRODUCTION_TEST = 0x2a,

	CMD_SET_CONFIG_ID = 0x2b,

	CMD_ENTER_DEEP_SLEEP = 0x2c,

	CMD_EXIT_DEEP_SLEEP = 0x2d,

	CMD_GET_TOUCH_INFO = 0x2e,

	CMD_GET_DATA_LOCATION = 0x2f,

	CMD_DOWNLOAD_CONFIG = 0x30,

	CMD_ENTER_PRODUCTION_TEST_MODE = 0x31,

	CMD_GET_FEATURES = 0x32,

};



enum status_code {

	STATUS_IDLE = 0x00,

	STATUS_OK = 0x01,

	STATUS_BUSY = 0x02,

	STATUS_CONTINUED_READ = 0x03,

	STATUS_NOT_EXECUTED_IN_DEEP_SLEEP = 0x0b,

	STATUS_RECEIVE_BUFFER_OVERFLOW = 0x0c,

	STATUS_PREVIOUS_COMMAND_PENDING = 0x0d,

	STATUS_NOT_IMPLEMENTED = 0x0e,

	STATUS_ERROR = 0x0f,

	STATUS_INVALID = 0xff,

};



enum report_type {

	REPORT_IDENTIFY = 0x10,

	REPORT_TOUCH = 0x11,

	REPORT_DELTA = 0x12,

	REPORT_RAW = 0x13,

	REPORT_STATUS = 0x1b,

	REPORT_PRINTF = 0x82,

	REPORT_HDL = 0xfe,

};



enum command_status {

	CMD_IDLE = 0,

	CMD_BUSY = 1,

	CMD_ERROR = -1,

};



enum flash_area {

	BOOTLOADER = 0,

	BOOT_CONFIG,

	APP_FIRMWARE,

	APP_CONFIG,

	DISP_CONFIG,

	CUSTOM_OTP,

	CUSTOM_LCM,

	CUSTOM_OEM,

	PPDT,

};



enum flash_data {

	LCM_DATA = 1,

	OEM_DATA,

	PPDT_DATA,

};



enum helper_task {

	HELP_NONE = 0,

	HELP_RUN_APPLICATION_FIRMWARE,

	HELP_SEND_RESET_NOTIFICATION,

};



struct syna_tcm_helper {

	atomic_t task;

	struct work_struct work;

	struct workqueue_struct *workqueue;

};



struct syna_tcm_watchdog {

	bool run;

	unsigned char count;

	struct delayed_work work;

	struct workqueue_struct *workqueue;

};



struct syna_tcm_buffer {

	bool clone;

	unsigned char *buf;

	unsigned int buf_size;

	unsigned int data_length;

	struct mutex buf_mutex;

};



struct syna_tcm_report {

	unsigned char id;

	struct syna_tcm_buffer buffer;

};



struct syna_tcm_identification {

	unsigned char version;

	unsigned char mode;

	unsigned char part_number[16];

	unsigned char build_id[4];

	unsigned char max_write_size[2];

};



struct syna_tcm_boot_info {

	unsigned char version;

	unsigned char status;

	unsigned char asic_id[2];

	unsigned char write_block_size_words;

	unsigned char erase_page_size_words[2];

	unsigned char max_write_payload_size[2];

	unsigned char last_reset_reason;

	unsigned char pc_at_time_of_last_reset[2];

	unsigned char boot_config_start_block[2];

	unsigned char boot_config_size_blocks[2];

	unsigned char display_config_start_block[4];

	unsigned char display_config_length_blocks[2];

	unsigned char backup_display_config_start_block[4];

	unsigned char backup_display_config_length_blocks[2];

	unsigned char custom_otp_start_block[2];

	unsigned char custom_otp_length_blocks[2];

};



struct syna_tcm_app_info {

	unsigned char version[2];

	unsigned char status[2];

	unsigned char static_config_size[2];

	unsigned char dynamic_config_size[2];

	unsigned char app_config_start_write_block[2];

	unsigned char app_config_size[2];

	unsigned char max_touch_report_config_size[2];

	unsigned char max_touch_report_payload_size[2];

	unsigned char customer_config_id[16];

	unsigned char max_x[2];

	unsigned char max_y[2];

	unsigned char max_objects[2];

	unsigned char num_of_buttons[2];

	unsigned char num_of_image_rows[2];

	unsigned char num_of_image_cols[2];

	unsigned char has_hybrid_data[2];

};



struct syna_tcm_touch_info {

	unsigned char image_2d_scale_factor[4];

	unsigned char image_0d_scale_factor[4];

	unsigned char hybrid_x_scale_factor[4];

	unsigned char hybrid_y_scale_factor[4];

};



struct syna_tcm_message_header {

	unsigned char marker;

	unsigned char code;

	unsigned char length[2];

};



struct syna_tcm_features {

	unsigned char byte_0_reserved;

	unsigned char byte_1_reserved;

	unsigned char dual_firmware:1;

	unsigned char byte_2_reserved:7;

} __packed;



struct syna_tcm_hcd {

	pid_t isr_pid;

	atomic_t command_status;

	atomic_t host_downloading;

	atomic_t firmware_flashing;

	wait_queue_head_t hdl_wq;

	wait_queue_head_t reflash_wq;

	int irq;

	bool init_okay;

	bool do_polling;

	bool in_suspend;

	bool irq_enabled;

	bool host_download_mode;

	unsigned char marker;

	unsigned char fb_ready;

	unsigned char command;

	unsigned char async_report_id;

	unsigned char status_report_code;

	unsigned char response_code;

	unsigned int read_length;

	unsigned int payload_length;

	unsigned int packrat_number;

	unsigned int rd_chunk_size;

	unsigned int wr_chunk_size;

	unsigned int app_status;

	struct platform_device *pdev;

	struct regulator *pwr_reg;

	struct regulator *bus_reg;

	struct kobject *sysfs_dir;

	struct kobject *dynamnic_config_sysfs_dir;

	struct mutex extif_mutex;

	struct mutex reset_mutex;

	struct mutex irq_en_mutex;

	struct mutex io_ctrl_mutex;

	struct mutex rw_ctrl_mutex;

	struct mutex command_mutex;

	struct mutex identify_mutex;

	struct delayed_work polling_work;

	struct workqueue_struct *polling_workqueue;

	struct task_struct *notifier_thread;

	struct pinctrl *ts_pinctrl;

	struct pinctrl_state *pinctrl_state_active;

	struct pinctrl_state *pinctrl_state_suspend;

	struct pinctrl_state *pinctrl_state_release;

#if defined(CONFIG_DRM) || defined(CONFIG_FB)

	struct notifier_block fb_notifier;

#endif

	struct syna_tcm_buffer in;

	struct syna_tcm_buffer out;

	struct syna_tcm_buffer resp;

	struct syna_tcm_buffer temp;

	struct syna_tcm_buffer config;

	struct syna_tcm_report report;

	struct syna_tcm_app_info app_info;

	struct syna_tcm_boot_info boot_info;

	struct syna_tcm_touch_info touch_info;

	struct syna_tcm_identification id_info;

	struct syna_tcm_helper helper;

	struct syna_tcm_watchdog watchdog;

	struct syna_tcm_features features;

	const struct syna_tcm_hw_interface *hw_if;

	int (*reset)(struct syna_tcm_hcd *tcm_hcd, bool hw, bool update_wd);

	int (*sleep)(struct syna_tcm_hcd *tcm_hcd, bool en);

	int (*identify)(struct syna_tcm_hcd *tcm_hcd, bool id);

	int (*enable_irq)(struct syna_tcm_hcd *tcm_hcd, bool en, bool ns);

	int (*switch_mode)(struct syna_tcm_hcd *tcm_hcd,

			enum firmware_mode mode);

	int (*read_message)(struct syna_tcm_hcd *tcm_hcd,

			unsigned char *in_buf, unsigned int length);

	int (*write_message)(struct syna_tcm_hcd *tcm_hcd,

			unsigned char command, unsigned char *payload,

			unsigned int length, unsigned char **resp_buf,

			unsigned int *resp_buf_size, unsigned int *resp_length,

			unsigned char *response_code,

			unsigned int polling_delay_ms);

	int (*get_dynamic_config)(struct syna_tcm_hcd *tcm_hcd,

			enum dynamic_config_id id, unsigned short *value);

	int (*set_dynamic_config)(struct syna_tcm_hcd *tcm_hcd,

			enum dynamic_config_id id, unsigned short value);

	int (*get_data_location)(struct syna_tcm_hcd *tcm_hcd,

			enum flash_area area, unsigned int *addr,

			unsigned int *length);

	int (*read_flash_data)(enum flash_area area, bool run_app_firmware,

			struct syna_tcm_buffer *output);

	void (*report_touch)(void);

	void (*update_watchdog)(struct syna_tcm_hcd *tcm_hcd, bool en);

};



struct syna_tcm_module_cb {

	enum module_type type;

	int (*init)(struct syna_tcm_hcd *tcm_hcd);

	int (*remove)(struct syna_tcm_hcd *tcm_hcd);

	int (*syncbox)(struct syna_tcm_hcd *tcm_hcd);

	int (*asyncbox)(struct syna_tcm_hcd *tcm_hcd);

	int (*reset)(struct syna_tcm_hcd *tcm_hcd);

	int (*suspend)(struct syna_tcm_hcd *tcm_hcd);

	int (*resume)(struct syna_tcm_hcd *tcm_hcd);

	int (*early_suspend)(struct syna_tcm_hcd *tcm_hcd);

};



struct syna_tcm_module_handler {

	bool insert;

	bool detach;

	struct list_head link;

	struct syna_tcm_module_cb *mod_cb;

};



struct syna_tcm_module_pool {

	bool initialized;

	bool queue_work;

	bool reconstructing;

	struct mutex mutex;

	struct list_head list;

	struct work_struct work;

	struct workqueue_struct *workqueue;

	struct syna_tcm_hcd *tcm_hcd;

};



struct syna_tcm_bus_io {

	unsigned char type;

	int (*rmi_read)(struct syna_tcm_hcd *tcm_hcd, unsigned short addr,

			unsigned char *data, unsigned int length);

	int (*rmi_write)(struct syna_tcm_hcd *tcm_hcd, unsigned short addr,

			unsigned char *data, unsigned int length);

	int (*read)(struct syna_tcm_hcd *tcm_hcd, unsigned char *data,

			unsigned int length);

	int (*write)(struct syna_tcm_hcd *tcm_hcd, unsigned char *data,

			unsigned int length);

};



struct syna_tcm_hw_interface {

	struct syna_tcm_board_data *bdata;

	const struct syna_tcm_bus_io *bus_io;

};



int syna_tcm_bus_init(void);



void syna_tcm_bus_exit(void);



int syna_tcm_add_module(struct syna_tcm_module_cb *mod_cb, bool insert);



static inline int syna_tcm_rmi_read(struct syna_tcm_hcd *tcm_hcd,

		unsigned short addr, unsigned char *data, unsigned int length)

{

	return tcm_hcd->hw_if->bus_io->rmi_read(tcm_hcd, addr, data, length);

}



static inline int syna_tcm_rmi_write(struct syna_tcm_hcd *tcm_hcd,

		unsigned short addr, unsigned char *data, unsigned int length)

{

	return tcm_hcd->hw_if->bus_io->rmi_write(tcm_hcd, addr, data, length);

}



static inline int syna_tcm_read(struct syna_tcm_hcd *tcm_hcd,

		unsigned char *data, unsigned int length)

{

	return tcm_hcd->hw_if->bus_io->read(tcm_hcd, data, length);

}



static inline int syna_tcm_write(struct syna_tcm_hcd *tcm_hcd,

		unsigned char *data, unsigned int length)

{

	return tcm_hcd->hw_if->bus_io->write(tcm_hcd, data, length);

}



static inline ssize_t syna_tcm_show_error(struct device *dev,

		struct device_attribute *attr, char *buf)

{

	pr_err("%s: Attribute not readable\n",

			__func__);



	return -EPERM;

}



static inline ssize_t syna_tcm_store_error(struct device *dev,

		struct device_attribute *attr, const char *buf, size_t count)

{

	pr_err("%s: Attribute not writable\n",

			__func__);



	return -EPERM;

}



static inline int secure_memcpy(unsigned char *dest, unsigned int dest_size,

		const unsigned char *src, unsigned int src_size,

		unsigned int count)

{

	if (dest == NULL || src == NULL)

		return -EINVAL;



	if (count > dest_size || count > src_size) {

		pr_err("%s: src_size = %d, dest_size = %d, count = %d\n",

				__func__, src_size, dest_size, count);

		return -EINVAL;

	}



	memcpy((void *)dest, (const void *)src, count);



	return 0;

}



static inline int syna_tcm_realloc_mem(struct syna_tcm_hcd *tcm_hcd,

		struct syna_tcm_buffer *buffer, unsigned int size)

{

	int retval;

	unsigned char *temp;



	if (size > buffer->buf_size) {

		temp = buffer->buf;



		buffer->buf = kmalloc(size, GFP_KERNEL);

		if (!(buffer->buf)) {

			dev_err(tcm_hcd->pdev->dev.parent,

					"%s: Failed to allocate memory\n",

					__func__);

			kfree(temp);

			buffer->buf_size = 0;

			return -ENOMEM;

		}



		retval = secure_memcpy(buffer->buf,

				size,

				temp,

				buffer->buf_size,

				buffer->buf_size);

		if (retval < 0) {

			dev_err(tcm_hcd->pdev->dev.parent,

					"%s: Failed to copy data\n",

					__func__);

			kfree(temp);

			kfree(buffer->buf);

			buffer->buf_size = 0;

			return retval;

		}



		kfree(temp);

		buffer->buf_size = size;

	}



	return 0;

}



static inline int syna_tcm_alloc_mem(struct syna_tcm_hcd *tcm_hcd,

		struct syna_tcm_buffer *buffer, unsigned int size)

{

	if (size > buffer->buf_size) {

		kfree(buffer->buf);

		buffer->buf = kmalloc(size, GFP_KERNEL);

		if (!(buffer->buf)) {

			dev_err(tcm_hcd->pdev->dev.parent,

					"%s: Failed to allocate memory\n",

					__func__);

			dev_err(tcm_hcd->pdev->dev.parent,

					"%s: Allocation size = %d\n",

					__func__, size);

			buffer->buf_size = 0;

			buffer->data_length = 0;

			return -ENOMEM;

		}

		buffer->buf_size = size;

	}



	memset(buffer->buf, 0x00, buffer->buf_size);

	buffer->data_length = 0;



	return 0;

}



static inline unsigned int le2_to_uint(const unsigned char *src)

{

	return (unsigned int)src[0] +

			(unsigned int)src[1] * 0x100;

}



static inline unsigned int le4_to_uint(const unsigned char *src)

{

	return (unsigned int)src[0] +

			(unsigned int)src[1] * 0x100 +

			(unsigned int)src[2] * 0x10000 +

			(unsigned int)src[3] * 0x1000000;

}



static inline unsigned int ceil_div(unsigned int dividend,

		unsigned int divisor)

{

	return (dividend + divisor - 1) / divisor;

}



#endif

drivers/input/touchscreen/synaptics_tcm/synaptics_tcm_device.c

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