334 lines
11 KiB
C
334 lines
11 KiB
C
/*
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* Synaptics RMI4 touchscreen driver
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*
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* Copyright (C) 2012 Synaptics Incorporated
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*
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* Copyright (C) 2012 Alexandra Chin <alexandra.chin@tw.synaptics.com>
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* Copyright (C) 2012 Scott Lin <scott.lin@tw.synaptics.com>
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* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef _SYNAPTICS_DSX_RMI4_H_
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#define _SYNAPTICS_DSX_RMI4_H_
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#define SYNAPTICS_DS4 (1 << 0)
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#define SYNAPTICS_DS5 (1 << 1)
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#define SYNAPTICS_DSX_DRIVER_PRODUCT SYNAPTICS_DS4
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#define SYNAPTICS_DSX_DRIVER_VERSION 0x1005
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#include <linux/version.h>
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#ifdef CONFIG_FB
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#include <linux/notifier.h>
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#include <linux/fb.h>
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#elif defined CONFIG_HAS_EARLYSUSPEND
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#include <linux/earlysuspend.h>
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#endif
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#include <linux/debugfs.h>
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#if defined(CONFIG_SECURE_TOUCH)
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#include <linux/completion.h>
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#include <linux/atomic.h>
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#include <linux/clk.h>
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#endif
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#define PDT_PROPS (0x00EF)
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#define PDT_START (0x00E9)
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#define PDT_END (0x000A)
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#define PDT_ENTRY_SIZE (0x0006)
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#define PAGES_TO_SERVICE (10)
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#define PAGE_SELECT_LEN (2)
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#define SYNAPTICS_RMI4_F01 (0x01)
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#define SYNAPTICS_RMI4_F11 (0x11)
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#define SYNAPTICS_RMI4_F12 (0x12)
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#define SYNAPTICS_RMI4_F1A (0x1a)
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#define SYNAPTICS_RMI4_F34 (0x34)
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#define SYNAPTICS_RMI4_F54 (0x54)
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#define SYNAPTICS_RMI4_F55 (0x55)
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#define SYNAPTICS_RMI4_PRODUCT_INFO_SIZE 2
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#define SYNAPTICS_RMI4_DATE_CODE_SIZE 3
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#define SYNAPTICS_RMI4_PRODUCT_ID_SIZE 10
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#define SYNAPTICS_RMI4_BUILD_ID_SIZE 3
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#define MAX_NUMBER_OF_FINGERS 10
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#define MAX_NUMBER_OF_BUTTONS 4
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#define MAX_INTR_REGISTERS 4
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#define MASK_16BIT 0xFFFF
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#define MASK_8BIT 0xFF
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#define MASK_7BIT 0x7F
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#define MASK_6BIT 0x3F
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#define MASK_5BIT 0x1F
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#define MASK_4BIT 0x0F
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#define MASK_3BIT 0x07
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#define MASK_2BIT 0x03
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#define MASK_1BIT 0x01
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#define NAME_BUFFER_SIZE 256
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#define PINCTRL_STATE_ACTIVE "pmx_ts_active"
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#define PINCTRL_STATE_SUSPEND "pmx_ts_suspend"
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#define PINCTRL_STATE_RELEASE "pmx_ts_release"
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/*
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* struct synaptics_rmi4_fn_desc - function descriptor fields in PDT
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* @query_base_addr: base address for query registers
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* @cmd_base_addr: base address for command registers
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* @ctrl_base_addr: base address for control registers
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* @data_base_addr: base address for data registers
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* @intr_src_count: number of interrupt sources
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* @fn_number: function number
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*/
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struct synaptics_rmi4_fn_desc {
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unsigned char query_base_addr;
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unsigned char cmd_base_addr;
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unsigned char ctrl_base_addr;
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unsigned char data_base_addr;
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unsigned char intr_src_count:3;
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unsigned char reserved_b3_b4:2;
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unsigned char version:2;
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unsigned char reserved_b7:1;
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unsigned char fn_number;
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} __packed;
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/*
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* synaptics_rmi4_fn_full_addr - full 16-bit base addresses
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* @query_base: 16-bit base address for query registers
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* @cmd_base: 16-bit base address for data registers
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* @ctrl_base: 16-bit base address for command registers
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* @data_base: 16-bit base address for control registers
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*/
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struct synaptics_rmi4_fn_full_addr {
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unsigned short query_base;
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unsigned short cmd_base;
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unsigned short ctrl_base;
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unsigned short data_base;
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};
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/*
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* struct synaptics_rmi4_fn - function handler data structure
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* @fn_number: function number
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* @num_of_data_sources: number of data sources
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* @num_of_data_points: maximum number of fingers supported
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* @size_of_data_register_block: data register block size
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* @data1_offset: offset to data1 register from data base address
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* @intr_reg_num: index to associated interrupt register
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* @intr_mask: interrupt mask
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* @full_addr: full 16-bit base addresses of function registers
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* @link: linked list for function handlers
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* @data_size: size of private data
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* @data: pointer to private data
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*/
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struct synaptics_rmi4_fn {
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unsigned char fn_number;
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unsigned char num_of_data_sources;
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unsigned char num_of_data_points;
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unsigned char size_of_data_register_block;
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unsigned char data1_offset;
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unsigned char intr_reg_num;
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unsigned char intr_mask;
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struct synaptics_rmi4_fn_full_addr full_addr;
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struct list_head link;
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int data_size;
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void *data;
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void *extra;
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};
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/*
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* struct synaptics_rmi4_device_info - device information
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* @version_major: rmi protocol major version number
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* @version_minor: rmi protocol minor version number
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* @manufacturer_id: manufacturer id
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* @product_props: product properties information
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* @product_info: product info array
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* @date_code: device manufacture date
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* @tester_id: tester id array
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* @serial_number: device serial number
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* @product_id_string: device product id
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* @support_fn_list: linked list for function handlers
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*/
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struct synaptics_rmi4_device_info {
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unsigned int version_major;
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unsigned int version_minor;
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unsigned char manufacturer_id;
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unsigned char product_props;
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unsigned char product_info[SYNAPTICS_RMI4_PRODUCT_INFO_SIZE];
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unsigned char date_code[SYNAPTICS_RMI4_DATE_CODE_SIZE];
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unsigned short tester_id;
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unsigned short serial_number;
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unsigned char product_id_string[SYNAPTICS_RMI4_PRODUCT_ID_SIZE + 1];
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unsigned char build_id[SYNAPTICS_RMI4_BUILD_ID_SIZE];
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unsigned char config_id[3];
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struct mutex support_fn_list_mutex;
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struct list_head support_fn_list;
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unsigned int package_id;
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unsigned int package_id_rev;
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};
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/*
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* struct synaptics_rmi4_data - rmi4 device instance data
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* @i2c_client: pointer to associated i2c client
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* @input_dev: pointer to associated input device
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* @board: constant pointer to platform data
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* @rmi4_mod_info: device information
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* @regulator: pointer to associated regulator
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* @rmi4_io_ctrl_mutex: mutex for i2c i/o control
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* @det_work: work thread instance for expansion function detection
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* @det_workqueue: pointer to work queue for work thread instance
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* @early_suspend: instance to support early suspend power management
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* @current_page: current page in sensor to access
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* @button_0d_enabled: flag for 0d button support
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* @full_pm_cycle: flag for full power management cycle in early suspend stage
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* @num_of_intr_regs: number of interrupt registers
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* @f01_query_base_addr: query base address for f01
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* @f01_cmd_base_addr: command base address for f01
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* @f01_ctrl_base_addr: control base address for f01
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* @f01_data_base_addr: data base address for f01
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* @irq: attention interrupt
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* @sensor_max_x: sensor maximum x value
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* @sensor_max_y: sensor maximum y value
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* @disp_maxx: max x value of display
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* @disp_maxy: max y value of display
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* @disp_minx: min x value of display
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* @disp_miny: min y value of display
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* @irq_enabled: flag for indicating interrupt enable status
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* @touch_stopped: flag to stop interrupt thread processing
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* @fingers_on_2d: flag to indicate presence of fingers in 2d area
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* @flip_x: set to TRUE if desired to flip direction on x-axis
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* @flip_y: set to TRUE if desired to flip direction on y-axis
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* @fw_updating: firmware is updating flag
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* @sensor_sleep: flag to indicate sleep state of sensor
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* @wait: wait queue for touch data polling in interrupt thread
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* @i2c_read: pointer to i2c read function
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* @i2c_write: pointer to i2c write function
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* @irq_enable: pointer to irq enable function
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*/
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struct synaptics_rmi4_data {
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struct i2c_client *i2c_client;
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struct input_dev *input_dev;
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const struct synaptics_rmi4_platform_data *board;
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struct synaptics_rmi4_device_info rmi4_mod_info;
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struct regulator *vdd;
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struct regulator *vcc_i2c;
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struct mutex rmi4_io_ctrl_mutex;
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struct delayed_work det_work;
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struct workqueue_struct *det_workqueue;
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#ifdef CONFIG_HAS_EARLYSUSPEND
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struct early_suspend early_suspend;
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#endif
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struct dentry *dir;
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char fw_image_name[NAME_BUFFER_SIZE];
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unsigned char current_page;
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unsigned char button_0d_enabled;
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unsigned char full_pm_cycle;
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unsigned char num_of_rx;
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unsigned char num_of_tx;
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unsigned char num_of_fingers;
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unsigned char max_touch_width;
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unsigned char report_enable;
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unsigned char intr_mask[MAX_INTR_REGISTERS];
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unsigned short num_of_intr_regs;
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unsigned short f01_query_base_addr;
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unsigned short f01_cmd_base_addr;
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unsigned short f01_ctrl_base_addr;
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unsigned short f01_data_base_addr;
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int irq;
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int sensor_max_x;
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int sensor_max_y;
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int disp_maxx;
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int disp_maxy;
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int disp_minx;
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int disp_miny;
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bool irq_enabled;
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bool touch_stopped;
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bool fingers_on_2d;
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bool sensor_sleep;
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bool flip_x;
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bool flip_y;
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bool fw_updating;
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bool suspended;
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wait_queue_head_t wait;
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bool stay_awake;
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bool staying_awake;
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int (*i2c_read)(struct synaptics_rmi4_data *pdata, unsigned short addr,
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unsigned char *data, unsigned short length);
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int (*i2c_write)(struct synaptics_rmi4_data *pdata, unsigned short addr,
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unsigned char *data, unsigned short length);
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int (*irq_enable)(struct synaptics_rmi4_data *rmi4_data, bool enable);
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int (*reset_device)(struct synaptics_rmi4_data *rmi4_data);
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#ifdef CONFIG_FB
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struct notifier_block fb_notif;
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#else
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#ifdef CONFIG_HAS_EARLYSUSPEND
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struct early_suspend early_suspend;
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#endif
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#endif
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struct pinctrl *ts_pinctrl;
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struct pinctrl_state *pinctrl_state_active;
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struct pinctrl_state *pinctrl_state_suspend;
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struct pinctrl_state *pinctrl_state_release;
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#if defined(CONFIG_SECURE_TOUCH)
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atomic_t st_enabled;
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atomic_t st_pending_irqs;
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bool st_initialized;
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struct completion st_powerdown;
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struct completion st_irq_processed;
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struct clk *core_clk;
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struct clk *iface_clk;
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#endif
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};
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enum exp_fn {
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RMI_DEV = 0,
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RMI_F34,
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RMI_F54,
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RMI_FW_UPDATER,
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RMI_LAST,
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};
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struct synaptics_rmi4_exp_fn_ptr {
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int (*read)(struct synaptics_rmi4_data *rmi4_data, unsigned short addr,
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unsigned char *data, unsigned short length);
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int (*write)(struct synaptics_rmi4_data *rmi4_data, unsigned short addr,
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unsigned char *data, unsigned short length);
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int (*enable)(struct synaptics_rmi4_data *rmi4_data, bool enable);
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};
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void synaptics_rmi4_new_function(enum exp_fn fn_type, bool insert,
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int (*func_init)(struct synaptics_rmi4_data *rmi4_data),
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void (*func_remove)(struct synaptics_rmi4_data *rmi4_data),
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void (*func_attn)(struct synaptics_rmi4_data *rmi4_data,
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unsigned char intr_mask));
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static inline ssize_t synaptics_rmi4_store_error(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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dev_warn(dev, "%s Attempted to write to read-only attribute %s\n",
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__func__, attr->attr.name);
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return -EPERM;
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}
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static inline void batohs(unsigned short *dest, unsigned char *src)
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{
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*dest = src[1] * 0x100 + src[0];
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}
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static inline void hstoba(unsigned char *dest, unsigned short src)
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{
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dest[0] = src % 0x100;
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dest[1] = src / 0x100;
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}
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#endif
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