1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
|
/*
* Cypress APA trackpad with I2C interface
*
* Author: Dudley Du <dudl@cypress.com>
*
* Copyright (C) 2014 Cypress Semiconductor, Inc.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive for
* more details.
*/
#ifndef _CYAPA_H
#define _CYAPA_H
#include <linux/firmware.h>
/* APA trackpad firmware generation number. */
#define CYAPA_GEN_UNKNOWN 0x00 /* unknown protocol. */
#define CYAPA_GEN3 0x03 /* support MT-protocol B with tracking ID. */
#define CYAPA_GEN5 0x05 /* support TrueTouch GEN5 trackpad device. */
#define CYAPA_NAME "Cypress APA Trackpad (cyapa)"
/*
* Macros for SMBus communication
*/
#define SMBUS_READ 0x01
#define SMBUS_WRITE 0x00
#define SMBUS_ENCODE_IDX(cmd, idx) ((cmd) | (((idx) & 0x03) << 1))
#define SMBUS_ENCODE_RW(cmd, rw) ((cmd) | ((rw) & 0x01))
#define SMBUS_BYTE_BLOCK_CMD_MASK 0x80
#define SMBUS_GROUP_BLOCK_CMD_MASK 0x40
/* Commands for read/write registers of Cypress trackpad */
#define CYAPA_CMD_SOFT_RESET 0x00
#define CYAPA_CMD_POWER_MODE 0x01
#define CYAPA_CMD_DEV_STATUS 0x02
#define CYAPA_CMD_GROUP_DATA 0x03
#define CYAPA_CMD_GROUP_CMD 0x04
#define CYAPA_CMD_GROUP_QUERY 0x05
#define CYAPA_CMD_BL_STATUS 0x06
#define CYAPA_CMD_BL_HEAD 0x07
#define CYAPA_CMD_BL_CMD 0x08
#define CYAPA_CMD_BL_DATA 0x09
#define CYAPA_CMD_BL_ALL 0x0a
#define CYAPA_CMD_BLK_PRODUCT_ID 0x0b
#define CYAPA_CMD_BLK_HEAD 0x0c
#define CYAPA_CMD_MAX_BASELINE 0x0d
#define CYAPA_CMD_MIN_BASELINE 0x0e
#define BL_HEAD_OFFSET 0x00
#define BL_DATA_OFFSET 0x10
#define BL_STATUS_SIZE 3 /* Length of gen3 bootloader status registers */
#define CYAPA_REG_MAP_SIZE 256
/*
* Gen3 Operational Device Status Register
*
* bit 7: Valid interrupt source
* bit 6 - 4: Reserved
* bit 3 - 2: Power status
* bit 1 - 0: Device status
*/
#define REG_OP_STATUS 0x00
#define OP_STATUS_SRC 0x80
#define OP_STATUS_POWER 0x0c
#define OP_STATUS_DEV 0x03
#define OP_STATUS_MASK (OP_STATUS_SRC | OP_STATUS_POWER | OP_STATUS_DEV)
/*
* Operational Finger Count/Button Flags Register
*
* bit 7 - 4: Number of touched finger
* bit 3: Valid data
* bit 2: Middle Physical Button
* bit 1: Right Physical Button
* bit 0: Left physical Button
*/
#define REG_OP_DATA1 0x01
#define OP_DATA_VALID 0x08
#define OP_DATA_MIDDLE_BTN 0x04
#define OP_DATA_RIGHT_BTN 0x02
#define OP_DATA_LEFT_BTN 0x01
#define OP_DATA_BTN_MASK (OP_DATA_MIDDLE_BTN | OP_DATA_RIGHT_BTN | \
OP_DATA_LEFT_BTN)
/*
* Write-only command file register used to issue commands and
* parameters to the bootloader.
* The default value read from it is always 0x00.
*/
#define REG_BL_FILE 0x00
#define BL_FILE 0x00
/*
* Bootloader Status Register
*
* bit 7: Busy
* bit 6 - 5: Reserved
* bit 4: Bootloader running
* bit 3 - 2: Reserved
* bit 1: Watchdog Reset
* bit 0: Checksum valid
*/
#define REG_BL_STATUS 0x01
#define BL_STATUS_REV_6_5 0x60
#define BL_STATUS_BUSY 0x80
#define BL_STATUS_RUNNING 0x10
#define BL_STATUS_REV_3_2 0x0c
#define BL_STATUS_WATCHDOG 0x02
#define BL_STATUS_CSUM_VALID 0x01
#define BL_STATUS_REV_MASK (BL_STATUS_WATCHDOG | BL_STATUS_REV_3_2 | \
BL_STATUS_REV_6_5)
/*
* Bootloader Error Register
*
* bit 7: Invalid
* bit 6: Invalid security key
* bit 5: Bootloading
* bit 4: Command checksum
* bit 3: Flash protection error
* bit 2: Flash checksum error
* bit 1 - 0: Reserved
*/
#define REG_BL_ERROR 0x02
#define BL_ERROR_INVALID 0x80
#define BL_ERROR_INVALID_KEY 0x40
#define BL_ERROR_BOOTLOADING 0x20
#define BL_ERROR_CMD_CSUM 0x10
#define BL_ERROR_FLASH_PROT 0x08
#define BL_ERROR_FLASH_CSUM 0x04
#define BL_ERROR_RESERVED 0x03
#define BL_ERROR_NO_ERR_IDLE 0x00
#define BL_ERROR_NO_ERR_ACTIVE (BL_ERROR_BOOTLOADING)
#define CAPABILITY_BTN_SHIFT 3
#define CAPABILITY_LEFT_BTN_MASK (0x01 << 3)
#define CAPABILITY_RIGHT_BTN_MASK (0x01 << 4)
#define CAPABILITY_MIDDLE_BTN_MASK (0x01 << 5)
#define CAPABILITY_BTN_MASK (CAPABILITY_LEFT_BTN_MASK | \
CAPABILITY_RIGHT_BTN_MASK | \
CAPABILITY_MIDDLE_BTN_MASK)
#define PWR_MODE_MASK 0xfc
#define PWR_MODE_FULL_ACTIVE (0x3f << 2)
#define PWR_MODE_IDLE (0x03 << 2) /* Default rt suspend scanrate: 30ms */
#define PWR_MODE_SLEEP (0x05 << 2) /* Default suspend scanrate: 50ms */
#define PWR_MODE_BTN_ONLY (0x01 << 2)
#define PWR_MODE_OFF (0x00 << 2)
#define PWR_STATUS_MASK 0x0c
#define PWR_STATUS_ACTIVE (0x03 << 2)
#define PWR_STATUS_IDLE (0x02 << 2)
#define PWR_STATUS_BTN_ONLY (0x01 << 2)
#define PWR_STATUS_OFF (0x00 << 2)
#define AUTOSUSPEND_DELAY 2000 /* unit : ms */
#define UNINIT_SLEEP_TIME 0xFFFF
#define UNINIT_PWR_MODE 0xFF
#define BTN_ONLY_MODE_NAME "buttononly"
#define OFF_MODE_NAME "off"
/* The touch.id is used as the MT slot id, thus max MT slot is 15 */
#define CYAPA_MAX_MT_SLOTS 15
struct cyapa;
typedef bool (*cb_sort)(struct cyapa *, u8 *, int);
struct cyapa_dev_ops {
int (*check_fw)(struct cyapa *, const struct firmware *);
int (*bl_enter)(struct cyapa *);
int (*bl_activate)(struct cyapa *);
int (*bl_initiate)(struct cyapa *, const struct firmware *);
int (*update_fw)(struct cyapa *, const struct firmware *);
int (*bl_deactivate)(struct cyapa *);
ssize_t (*show_baseline)(struct device *,
struct device_attribute *, char *);
ssize_t (*calibrate_store)(struct device *,
struct device_attribute *, const char *, size_t);
int (*initialize)(struct cyapa *cyapa);
int (*state_parse)(struct cyapa *cyapa, u8 *reg_status, int len);
int (*operational_check)(struct cyapa *cyapa);
int (*irq_handler)(struct cyapa *);
bool (*irq_cmd_handler)(struct cyapa *);
int (*sort_empty_output_data)(struct cyapa *,
u8 *, int *, cb_sort);
int (*set_power_mode)(struct cyapa *, u8, u16);
};
struct cyapa_gen5_cmd_states {
struct mutex cmd_lock;
struct completion cmd_ready;
atomic_t cmd_issued;
u8 in_progress_cmd;
bool is_irq_mode;
cb_sort resp_sort_func;
u8 *resp_data;
int *resp_len;
u8 irq_cmd_buf[CYAPA_REG_MAP_SIZE];
u8 empty_buf[CYAPA_REG_MAP_SIZE];
};
union cyapa_cmd_states {
struct cyapa_gen5_cmd_states gen5;
};
enum cyapa_state {
CYAPA_STATE_NO_DEVICE,
CYAPA_STATE_BL_BUSY,
CYAPA_STATE_BL_IDLE,
CYAPA_STATE_BL_ACTIVE,
CYAPA_STATE_OP,
CYAPA_STATE_GEN5_BL,
CYAPA_STATE_GEN5_APP,
};
/* The main device structure */
struct cyapa {
enum cyapa_state state;
u8 status[BL_STATUS_SIZE];
bool operational; /* true: ready for data reporting; false: not. */
struct i2c_client *client;
struct input_dev *input;
char phys[32]; /* Device physical location */
bool irq_wake; /* Irq wake is enabled */
bool smbus;
/* power mode settings */
u8 suspend_power_mode;
u16 suspend_sleep_time;
u8 dev_pwr_mode;
u16 dev_sleep_time;
/* Read from query data region. */
char product_id[16];
u8 fw_maj_ver; /* Firmware major version. */
u8 fw_min_ver; /* Firmware minor version. */
u8 btn_capability;
u8 gen;
int max_abs_x;
int max_abs_y;
int physical_size_x;
int physical_size_y;
/* Used in ttsp and truetouch based trackpad devices. */
u8 x_origin; /* X Axis Origin: 0 = left side; 1 = rigth side. */
u8 y_origin; /* Y Axis Origin: 0 = top; 1 = bottom. */
int electrodes_x; /* Number of electrodes on the X Axis*/
int electrodes_y; /* Number of electrodes on the Y Axis*/
int max_z;
/*
* Used to synchronize the access or update the device state.
* And since update firmware and read firmware image process will take
* quite long time, maybe more than 10 seconds, so use mutex_lock
* to sync and wait other interface and detecting are done or ready.
*/
struct mutex state_sync_lock;
const struct cyapa_dev_ops *ops;
union cyapa_cmd_states cmd_states;
};
ssize_t cyapa_i2c_reg_read_block(struct cyapa *cyapa, u8 reg, size_t len,
u8 *values);
ssize_t cyapa_smbus_read_block(struct cyapa *cyapa, u8 cmd, size_t len,
u8 *values);
ssize_t cyapa_read_block(struct cyapa *cyapa, u8 cmd_idx, u8 *values);
int cyapa_poll_state(struct cyapa *cyapa, unsigned int timeout);
u8 cyapa_sleep_time_to_pwr_cmd(u16 sleep_time);
u16 cyapa_pwr_cmd_to_sleep_time(u8 pwr_mode);
extern const char product_id[];
extern const struct cyapa_dev_ops cyapa_gen3_ops;
extern const struct cyapa_dev_ops cyapa_gen5_ops;
#endif
|
