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cyttsp_core.h
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1 /*
2  * Header file for:
3  * Cypress TrueTouch(TM) Standard Product (TTSP) touchscreen drivers.
4  * For use with Cypress Txx3xx parts.
5  * Supported parts include:
6  * CY8CTST341
7  * CY8CTMA340
8  *
9  * Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc.
10  * Copyright (C) 2012 Javier Martinez Canillas <[email protected]>
11  *
12  * This program is free software; you can redistribute it and/or
13  * modify it under the terms of the GNU General Public License
14  * version 2, and only version 2, as published by the
15  * Free Software Foundation.
16  *
17  * This program is distributed in the hope that it will be useful,
18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20  * GNU General Public License for more details.
21  *
22  * You should have received a copy of the GNU General Public License along
23  * with this program; if not, write to the Free Software Foundation, Inc.,
24  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
25  *
26  * Contact Cypress Semiconductor at www.cypress.com <[email protected]>
27  *
28  */
29 
30 
31 #ifndef __CYTTSP_CORE_H__
32 #define __CYTTSP_CORE_H__
33 
34 #include <linux/kernel.h>
35 #include <linux/err.h>
36 #include <linux/module.h>
37 #include <linux/types.h>
38 #include <linux/device.h>
39 #include <linux/input/cyttsp.h>
40 
41 #define CY_NUM_RETRY 16 /* max number of retries for read ops */
42 
43 struct cyttsp_tch {
44  __be16 x, y;
45  u8 z;
46 } __packed;
47 
48 /* TrueTouch Standard Product Gen3 interface definition */
49 struct cyttsp_xydata {
50  u8 hst_mode;
51  u8 tt_mode;
52  u8 tt_stat;
53  struct cyttsp_tch tch1;
54  u8 touch12_id;
55  struct cyttsp_tch tch2;
56  u8 gest_cnt;
57  u8 gest_id;
58  struct cyttsp_tch tch3;
59  u8 touch34_id;
60  struct cyttsp_tch tch4;
61  u8 tt_undef[3];
62  u8 act_dist;
63  u8 tt_reserved;
64 } __packed;
65 
66 
67 /* TTSP System Information interface definition */
68 struct cyttsp_sysinfo_data {
69  u8 hst_mode;
70  u8 mfg_cmd;
71  u8 mfg_stat;
72  u8 cid[3];
73  u8 tt_undef1;
74  u8 uid[8];
75  u8 bl_verh;
76  u8 bl_verl;
77  u8 tts_verh;
78  u8 tts_verl;
79  u8 app_idh;
80  u8 app_idl;
81  u8 app_verh;
82  u8 app_verl;
83  u8 tt_undef[5];
84  u8 scn_typ;
85  u8 act_intrvl;
86  u8 tch_tmout;
87  u8 lp_intrvl;
88 };
89 
90 /* TTSP Bootloader Register Map interface definition */
91 #define CY_BL_CHKSUM_OK 0x01
92 struct cyttsp_bootloader_data {
93  u8 bl_file;
94  u8 bl_status;
95  u8 bl_error;
96  u8 blver_hi;
97  u8 blver_lo;
98  u8 bld_blver_hi;
99  u8 bld_blver_lo;
100  u8 ttspver_hi;
101  u8 ttspver_lo;
102  u8 appid_hi;
103  u8 appid_lo;
104  u8 appver_hi;
105  u8 appver_lo;
106  u8 cid_0;
107  u8 cid_1;
108  u8 cid_2;
109 };
110 
111 struct cyttsp;
112 
113 struct cyttsp_bus_ops {
114  u16 bustype;
115  int (*write)(struct cyttsp *ts,
116  u8 addr, u8 length, const void *values);
117  int (*read)(struct cyttsp *ts, u8 addr, u8 length, void *values);
118 };
119 
120 enum cyttsp_state {
121  CY_IDLE_STATE,
122  CY_ACTIVE_STATE,
123  CY_BL_STATE,
124 };
125 
126 struct cyttsp {
127  struct device *dev;
128  int irq;
129  struct input_dev *input;
130  char phys[32];
131  const struct cyttsp_platform_data *pdata;
132  const struct cyttsp_bus_ops *bus_ops;
133  struct cyttsp_bootloader_data bl_data;
134  struct cyttsp_sysinfo_data sysinfo_data;
135  struct cyttsp_xydata xy_data;
136  struct completion bl_ready;
137  enum cyttsp_state state;
138  bool suspended;
139 
140  u8 xfer_buf[] ____cacheline_aligned;
141 };
142 
143 struct cyttsp *cyttsp_probe(const struct cyttsp_bus_ops *bus_ops,
144  struct device *dev, int irq, size_t xfer_buf_size);
145 void cyttsp_remove(struct cyttsp *ts);
146 
147 extern const struct dev_pm_ops cyttsp_pm_ops;
148 
149 #endif /* __CYTTSP_CORE_H__ */
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