25162a4f64
The cyttsp4 touchscreen driver was contributed in 2013 and since then has seen no updates. The driver uses platform data (no device tree support) and there are no users of it in the mainline kernel. There were occasional fixes to it for issues either found by static code analysis tools or via visual inspection, but otherwise the driver is completely untested. Remove the driver. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Link: https://lore.kernel.org/r/ZrAZ2cUow_z838tp@google.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
142 lines
2.7 KiB
C
142 lines
2.7 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/regulator/consumer.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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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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extern const struct dev_pm_ops cyttsp_pm_ops;
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#endif /* __CYTTSP_CORE_H__ */
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