linux/drivers/input/touchscreen/cyttsp_core.h
Ferruh Yigit 62f548d0c2 Input: cyttsp4 - use 16bit address for I2C/SPI communication
In TSG4, register map is 512bytes long and to access all of it,
one bit from address byte is used (which bit to use differs for
I2C and SPI);

Since common code used for TSG3 and TSG4 for I2C, this parameter
wrongly used as u8. TSG3 does not access beyond 255 bytes
but TSG4 may.

Tested-on:TMA3XX DVB && TMA4XX DVB

Signed-off-by: Ferruh Yigit <fery@cypress.com>
Acked-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2013-07-06 21:57:06 -07:00

155 lines
3.5 KiB
C

/*
* Header file for:
* Cypress TrueTouch(TM) Standard Product (TTSP) touchscreen drivers.
* For use with Cypress Txx3xx parts.
* Supported parts include:
* CY8CTST341
* CY8CTMA340
*
* Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc.
* Copyright (C) 2012 Javier Martinez Canillas <javier@dowhile0.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2, and only version 2, as published by the
* Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Contact Cypress Semiconductor at www.cypress.com <kev@cypress.com>
*
*/
#ifndef __CYTTSP_CORE_H__
#define __CYTTSP_CORE_H__
#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/device.h>
#include <linux/input/cyttsp.h>
#define CY_NUM_RETRY 16 /* max number of retries for read ops */
struct cyttsp_tch {
__be16 x, y;
u8 z;
} __packed;
/* TrueTouch Standard Product Gen3 interface definition */
struct cyttsp_xydata {
u8 hst_mode;
u8 tt_mode;
u8 tt_stat;
struct cyttsp_tch tch1;
u8 touch12_id;
struct cyttsp_tch tch2;
u8 gest_cnt;
u8 gest_id;
struct cyttsp_tch tch3;
u8 touch34_id;
struct cyttsp_tch tch4;
u8 tt_undef[3];
u8 act_dist;
u8 tt_reserved;
} __packed;
/* TTSP System Information interface definition */
struct cyttsp_sysinfo_data {
u8 hst_mode;
u8 mfg_stat;
u8 mfg_cmd;
u8 cid[3];
u8 tt_undef1;
u8 uid[8];
u8 bl_verh;
u8 bl_verl;
u8 tts_verh;
u8 tts_verl;
u8 app_idh;
u8 app_idl;
u8 app_verh;
u8 app_verl;
u8 tt_undef[5];
u8 scn_typ;
u8 act_intrvl;
u8 tch_tmout;
u8 lp_intrvl;
};
/* TTSP Bootloader Register Map interface definition */
#define CY_BL_CHKSUM_OK 0x01
struct cyttsp_bootloader_data {
u8 bl_file;
u8 bl_status;
u8 bl_error;
u8 blver_hi;
u8 blver_lo;
u8 bld_blver_hi;
u8 bld_blver_lo;
u8 ttspver_hi;
u8 ttspver_lo;
u8 appid_hi;
u8 appid_lo;
u8 appver_hi;
u8 appver_lo;
u8 cid_0;
u8 cid_1;
u8 cid_2;
};
struct cyttsp;
struct cyttsp_bus_ops {
u16 bustype;
int (*write)(struct device *dev, u8 *xfer_buf, u16 addr, u8 length,
const void *values);
int (*read)(struct device *dev, u8 *xfer_buf, u16 addr, u8 length,
void *values);
};
enum cyttsp_state {
CY_IDLE_STATE,
CY_ACTIVE_STATE,
CY_BL_STATE,
};
struct cyttsp {
struct device *dev;
int irq;
struct input_dev *input;
char phys[32];
const struct cyttsp_platform_data *pdata;
const struct cyttsp_bus_ops *bus_ops;
struct cyttsp_bootloader_data bl_data;
struct cyttsp_sysinfo_data sysinfo_data;
struct cyttsp_xydata xy_data;
struct completion bl_ready;
enum cyttsp_state state;
bool suspended;
u8 xfer_buf[] ____cacheline_aligned;
};
struct cyttsp *cyttsp_probe(const struct cyttsp_bus_ops *bus_ops,
struct device *dev, int irq, size_t xfer_buf_size);
void cyttsp_remove(struct cyttsp *ts);
int cyttsp_i2c_write_block_data(struct device *dev, u8 *xfer_buf, u16 addr,
u8 length, const void *values);
int cyttsp_i2c_read_block_data(struct device *dev, u8 *xfer_buf, u16 addr,
u8 length, void *values);
extern const struct dev_pm_ops cyttsp_pm_ops;
#endif /* __CYTTSP_CORE_H__ */