147 lines
3.0 KiB
C
147 lines
3.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Header file for:
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* Cypress TrueTouch(TM) Standard Product (TTSP) touchscreen drivers.
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* For use with Cypress Txx3xx parts.
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* Supported parts include:
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* CY8CTST341
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* CY8CTMA340
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*
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* Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc.
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* Copyright (C) 2012 Javier Martinez Canillas <javier@dowhile0.org>
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*
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* Contact Cypress Semiconductor at www.cypress.com <kev@cypress.com>
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*/
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#ifndef __CYTTSP_CORE_H__
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#define __CYTTSP_CORE_H__
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#include <linux/kernel.h>
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#include <linux/err.h>
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/device.h>
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#include <linux/input/cyttsp.h>
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#define CY_NUM_RETRY 16 /* max number of retries for read ops */
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struct cyttsp_tch {
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__be16 x, y;
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u8 z;
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} __packed;
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/* TrueTouch Standard Product Gen3 interface definition */
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struct cyttsp_xydata {
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u8 hst_mode;
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u8 tt_mode;
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u8 tt_stat;
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struct cyttsp_tch tch1;
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u8 touch12_id;
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struct cyttsp_tch tch2;
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u8 gest_cnt;
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u8 gest_id;
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struct cyttsp_tch tch3;
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u8 touch34_id;
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struct cyttsp_tch tch4;
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u8 tt_undef[3];
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u8 act_dist;
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u8 tt_reserved;
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} __packed;
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/* TTSP System Information interface definition */
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struct cyttsp_sysinfo_data {
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u8 hst_mode;
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u8 mfg_stat;
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u8 mfg_cmd;
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u8 cid[3];
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u8 tt_undef1;
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u8 uid[8];
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u8 bl_verh;
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u8 bl_verl;
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u8 tts_verh;
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u8 tts_verl;
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u8 app_idh;
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u8 app_idl;
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u8 app_verh;
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u8 app_verl;
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u8 tt_undef[5];
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u8 scn_typ;
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u8 act_intrvl;
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u8 tch_tmout;
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u8 lp_intrvl;
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};
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/* TTSP Bootloader Register Map interface definition */
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#define CY_BL_CHKSUM_OK 0x01
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struct cyttsp_bootloader_data {
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u8 bl_file;
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u8 bl_status;
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u8 bl_error;
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u8 blver_hi;
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u8 blver_lo;
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u8 bld_blver_hi;
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u8 bld_blver_lo;
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u8 ttspver_hi;
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u8 ttspver_lo;
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u8 appid_hi;
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u8 appid_lo;
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u8 appver_hi;
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u8 appver_lo;
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u8 cid_0;
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u8 cid_1;
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u8 cid_2;
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};
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struct cyttsp;
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struct cyttsp_bus_ops {
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u16 bustype;
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int (*write)(struct device *dev, u8 *xfer_buf, u16 addr, u8 length,
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const void *values);
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int (*read)(struct device *dev, u8 *xfer_buf, u16 addr, u8 length,
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void *values);
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};
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enum cyttsp_state {
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CY_IDLE_STATE,
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CY_ACTIVE_STATE,
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CY_BL_STATE,
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};
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struct cyttsp {
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struct device *dev;
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int irq;
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struct input_dev *input;
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char phys[32];
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const struct cyttsp_bus_ops *bus_ops;
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struct cyttsp_bootloader_data bl_data;
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struct cyttsp_sysinfo_data sysinfo_data;
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struct cyttsp_xydata xy_data;
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struct completion bl_ready;
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enum cyttsp_state state;
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bool suspended;
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struct gpio_desc *reset_gpio;
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bool use_hndshk;
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u8 act_dist;
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u8 act_intrvl;
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u8 tch_tmout;
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u8 lp_intrvl;
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u8 *bl_keys;
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u8 xfer_buf[] ____cacheline_aligned;
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};
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struct cyttsp *cyttsp_probe(const struct cyttsp_bus_ops *bus_ops,
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struct device *dev, int irq, size_t xfer_buf_size);
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int cyttsp_i2c_write_block_data(struct device *dev, u8 *xfer_buf, u16 addr,
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u8 length, const void *values);
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int cyttsp_i2c_read_block_data(struct device *dev, u8 *xfer_buf, u16 addr,
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u8 length, void *values);
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extern const struct dev_pm_ops cyttsp_pm_ops;
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#endif /* __CYTTSP_CORE_H__ */
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