drivers/input/rmi4/rmi_driver.h

   1 /*
   2  * Copyright (c) 2011-2016 Synaptics Incorporated
   3  * Copyright (c) 2011 Unixphere
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 as published by
   7  * the Free Software Foundation.
   8  */
   9
  10 #ifndef _RMI_DRIVER_H
  11 #define _RMI_DRIVER_H
  12
  13 #include <linux/ctype.h>
  14 #include <linux/hrtimer.h>
  15 #include <linux/ktime.h>
  16 #include <linux/input.h>
  17 #include "rmi_bus.h"
  18
  19 #define SYNAPTICS_INPUT_DEVICE_NAME "Synaptics RMI4 Touch Sensor"
  20 #define SYNAPTICS_VENDOR_ID 0x06cb
  21
  22 #define GROUP(_attrs) { \
  23         .attrs = _attrs,  \
  24 }
  25
  26 #define PDT_PROPERTIES_LOCATION 0x00EF
  27 #define BSR_LOCATION 0x00FE
  28
  29 #define RMI_PDT_PROPS_HAS_BSR 0x02
  30
  31 #define NAME_BUFFER_SIZE 256
  32
  33 #define RMI_PDT_ENTRY_SIZE 6
  34 #define RMI_PDT_FUNCTION_VERSION_MASK   0x60
  35 #define RMI_PDT_INT_SOURCE_COUNT_MASK   0x07
  36
  37 #define PDT_START_SCAN_LOCATION 0x00e9
  38 #define PDT_END_SCAN_LOCATION   0x0005
  39 #define RMI4_END_OF_PDT(id) ((id) == 0x00 || (id) == 0xff)
  40
  41 struct pdt_entry {
  42         u16 page_start;
  43         u8 query_base_addr;
  44         u8 command_base_addr;
  45         u8 control_base_addr;
  46         u8 data_base_addr;
  47         u8 interrupt_source_count;
  48         u8 function_version;
  49         u8 function_number;
  50 };
  51
  52 #define RMI_REG_DESC_PRESENSE_BITS      (32 * BITS_PER_BYTE)
  53 #define RMI_REG_DESC_SUBPACKET_BITS     (37 * BITS_PER_BYTE)
  54
  55 /* describes a single packet register */
  56 struct rmi_register_desc_item {
  57         u16 reg;
  58         unsigned long reg_size;
  59         u8 num_subpackets;
  60         unsigned long subpacket_map[BITS_TO_LONGS(
  61                                 RMI_REG_DESC_SUBPACKET_BITS)];
  62 };
  63
  64 /*
  65  * describes the packet registers for a particular type
  66  * (ie query, control, data)
  67  */
  68 struct rmi_register_descriptor {
  69         unsigned long struct_size;
  70         unsigned long presense_map[BITS_TO_LONGS(RMI_REG_DESC_PRESENSE_BITS)];
  71         u8 num_registers;
  72         struct rmi_register_desc_item *registers;
  73 };
  74
  75 int rmi_read_register_desc(struct rmi_device *d, u16 addr,
  76                                 struct rmi_register_descriptor *rdesc);
  77 const struct rmi_register_desc_item *rmi_get_register_desc_item(
  78                                 struct rmi_register_descriptor *rdesc, u16 reg);
  79
  80 /*
  81  * Calculate the total size of all of the registers described in the
  82  * descriptor.
  83  */
  84 size_t rmi_register_desc_calc_size(struct rmi_register_descriptor *rdesc);
  85 int rmi_register_desc_calc_reg_offset(
  86                         struct rmi_register_descriptor *rdesc, u16 reg);
  87 bool rmi_register_desc_has_subpacket(const struct rmi_register_desc_item *item,
  88                         u8 subpacket);
  89
  90 bool rmi_is_physical_driver(struct device_driver *);
  91 int rmi_register_physical_driver(void);
  92 void rmi_unregister_physical_driver(void);
  93 void rmi_free_function_list(struct rmi_device *rmi_dev);
  94 struct rmi_function *rmi_find_function(struct rmi_device *rmi_dev, u8 number);
  95 int rmi_enable_sensor(struct rmi_device *rmi_dev);
  96 int rmi_scan_pdt(struct rmi_device *rmi_dev, void *ctx,
  97                  int (*callback)(struct rmi_device *rmi_dev, void *ctx,
  98                  const struct pdt_entry *entry));
  99 int rmi_probe_interrupts(struct rmi_driver_data *data);
 100 void rmi_enable_irq(struct rmi_device *rmi_dev, bool clear_wake);
 101 void rmi_disable_irq(struct rmi_device *rmi_dev, bool enable_wake);
 102 int rmi_init_functions(struct rmi_driver_data *data);
 103 int rmi_initial_reset(struct rmi_device *rmi_dev, void *ctx,
 104                       const struct pdt_entry *pdt);
 105
 106 const char *rmi_f01_get_product_ID(struct rmi_function *fn);
 107
 108 #ifdef CONFIG_RMI4_F03
 109 int rmi_f03_overwrite_button(struct rmi_function *fn, unsigned int button,
 110                              int value);
 111 void rmi_f03_commit_buttons(struct rmi_function *fn);
 112 #else
 113 static inline int rmi_f03_overwrite_button(struct rmi_function *fn,
 114                                            unsigned int button, int value)
 115 {
 116         return 0;
 117 }
 118 static inline void rmi_f03_commit_buttons(struct rmi_function *fn) {}
 119 #endif
 120
 121 #ifdef CONFIG_RMI4_F34
 122 int rmi_f34_create_sysfs(struct rmi_device *rmi_dev);
 123 void rmi_f34_remove_sysfs(struct rmi_device *rmi_dev);
 124 #else
 125 static inline int rmi_f34_create_sysfs(struct rmi_device *rmi_dev)
 126 {
 127         return 0;
 128 }
 129
 130 static inline void rmi_f34_remove_sysfs(struct rmi_device *rmi_dev)
 131 {
 132 }
 133 #endif /* CONFIG_RMI_F34 */
 134
 135 extern struct rmi_function_handler rmi_f01_handler;
 136 extern struct rmi_function_handler rmi_f03_handler;
 137 extern struct rmi_function_handler rmi_f11_handler;
 138 extern struct rmi_function_handler rmi_f12_handler;
 139 extern struct rmi_function_handler rmi_f30_handler;
 140 extern struct rmi_function_handler rmi_f34_handler;
 141 extern struct rmi_function_handler rmi_f54_handler;
 142 extern struct rmi_function_handler rmi_f55_handler;
 143 #endif