cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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cyttsp_core.h (3057B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * Header file for:
      4 * Cypress TrueTouch(TM) Standard Product (TTSP) touchscreen drivers.
      5 * For use with Cypress Txx3xx parts.
      6 * Supported parts include:
      7 * CY8CTST341
      8 * CY8CTMA340
      9 *
     10 * Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc.
     11 * Copyright (C) 2012 Javier Martinez Canillas <javier@dowhile0.org>
     12 *
     13 * Contact Cypress Semiconductor at www.cypress.com <kev@cypress.com>
     14 */
     15
     16
     17#ifndef __CYTTSP_CORE_H__
     18#define __CYTTSP_CORE_H__
     19
     20#include <linux/kernel.h>
     21#include <linux/err.h>
     22#include <linux/module.h>
     23#include <linux/types.h>
     24#include <linux/device.h>
     25#include <linux/regulator/consumer.h>
     26
     27#define CY_NUM_RETRY		16 /* max number of retries for read ops */
     28
     29struct cyttsp_tch {
     30	__be16 x, y;
     31	u8 z;
     32} __packed;
     33
     34/* TrueTouch Standard Product Gen3 interface definition */
     35struct cyttsp_xydata {
     36	u8 hst_mode;
     37	u8 tt_mode;
     38	u8 tt_stat;
     39	struct cyttsp_tch tch1;
     40	u8 touch12_id;
     41	struct cyttsp_tch tch2;
     42	u8 gest_cnt;
     43	u8 gest_id;
     44	struct cyttsp_tch tch3;
     45	u8 touch34_id;
     46	struct cyttsp_tch tch4;
     47	u8 tt_undef[3];
     48	u8 act_dist;
     49	u8 tt_reserved;
     50} __packed;
     51
     52
     53/* TTSP System Information interface definition */
     54struct cyttsp_sysinfo_data {
     55	u8 hst_mode;
     56	u8 mfg_stat;
     57	u8 mfg_cmd;
     58	u8 cid[3];
     59	u8 tt_undef1;
     60	u8 uid[8];
     61	u8 bl_verh;
     62	u8 bl_verl;
     63	u8 tts_verh;
     64	u8 tts_verl;
     65	u8 app_idh;
     66	u8 app_idl;
     67	u8 app_verh;
     68	u8 app_verl;
     69	u8 tt_undef[5];
     70	u8 scn_typ;
     71	u8 act_intrvl;
     72	u8 tch_tmout;
     73	u8 lp_intrvl;
     74};
     75
     76/* TTSP Bootloader Register Map interface definition */
     77#define CY_BL_CHKSUM_OK 0x01
     78struct cyttsp_bootloader_data {
     79	u8 bl_file;
     80	u8 bl_status;
     81	u8 bl_error;
     82	u8 blver_hi;
     83	u8 blver_lo;
     84	u8 bld_blver_hi;
     85	u8 bld_blver_lo;
     86	u8 ttspver_hi;
     87	u8 ttspver_lo;
     88	u8 appid_hi;
     89	u8 appid_lo;
     90	u8 appver_hi;
     91	u8 appver_lo;
     92	u8 cid_0;
     93	u8 cid_1;
     94	u8 cid_2;
     95};
     96
     97struct cyttsp;
     98
     99struct cyttsp_bus_ops {
    100	u16 bustype;
    101	int (*write)(struct device *dev, u8 *xfer_buf, u16 addr, u8 length,
    102			const void *values);
    103	int (*read)(struct device *dev, u8 *xfer_buf, u16 addr, u8 length,
    104			void *values);
    105};
    106
    107enum cyttsp_state {
    108	CY_IDLE_STATE,
    109	CY_ACTIVE_STATE,
    110	CY_BL_STATE,
    111};
    112
    113struct cyttsp {
    114	struct device *dev;
    115	int irq;
    116	struct input_dev *input;
    117	const struct cyttsp_bus_ops *bus_ops;
    118	struct cyttsp_bootloader_data bl_data;
    119	struct cyttsp_sysinfo_data sysinfo_data;
    120	struct cyttsp_xydata xy_data;
    121	struct completion bl_ready;
    122	enum cyttsp_state state;
    123	bool suspended;
    124
    125	struct regulator_bulk_data regulators[2];
    126	struct gpio_desc *reset_gpio;
    127	bool use_hndshk;
    128	u8 act_dist;
    129	u8 act_intrvl;
    130	u8 tch_tmout;
    131	u8 lp_intrvl;
    132	u8 *bl_keys;
    133
    134	u8 xfer_buf[] ____cacheline_aligned;
    135};
    136
    137struct cyttsp *cyttsp_probe(const struct cyttsp_bus_ops *bus_ops,
    138			    struct device *dev, int irq, size_t xfer_buf_size);
    139
    140int cyttsp_i2c_write_block_data(struct device *dev, u8 *xfer_buf, u16 addr,
    141		u8 length, const void *values);
    142int cyttsp_i2c_read_block_data(struct device *dev, u8 *xfer_buf, u16 addr,
    143		u8 length, void *values);
    144extern const struct dev_pm_ops cyttsp_pm_ops;
    145
    146#endif /* __CYTTSP_CORE_H__ */