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 <javier@dowhile0.org> 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 <kev@cypress.com> 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_stat; 71 u8 mfg_cmd; 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 device *dev, u8 *xfer_buf, u16 addr, u8 length, 116 const void *values); 117 int (*read)(struct device *dev, u8 *xfer_buf, u16 addr, u8 length, 118 void *values); 119 }; 120 121 enum cyttsp_state { 122 CY_IDLE_STATE, 123 CY_ACTIVE_STATE, 124 CY_BL_STATE, 125 }; 126 127 struct cyttsp { 128 struct device *dev; 129 int irq; 130 struct input_dev *input; 131 char phys[32]; 132 const struct cyttsp_platform_data *pdata; 133 const struct cyttsp_bus_ops *bus_ops; 134 struct cyttsp_bootloader_data bl_data; 135 struct cyttsp_sysinfo_data sysinfo_data; 136 struct cyttsp_xydata xy_data; 137 struct completion bl_ready; 138 enum cyttsp_state state; 139 bool suspended; 140 141 u8 xfer_buf[] ____cacheline_aligned; 142 }; 143 144 struct cyttsp *cyttsp_probe(const struct cyttsp_bus_ops *bus_ops, 145 struct device *dev, int irq, size_t xfer_buf_size); 146 void cyttsp_remove(struct cyttsp *ts); 147 148 int cyttsp_i2c_write_block_data(struct device *dev, u8 *xfer_buf, u16 addr, 149 u8 length, const void *values); 150 int cyttsp_i2c_read_block_data(struct device *dev, u8 *xfer_buf, u16 addr, 151 u8 length, void *values); 152 extern const struct dev_pm_ops cyttsp_pm_ops; 153 154 #endif /* __CYTTSP_CORE_H__ */ 155