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Input: add Cypress TTSP capacitive multi-touch screen support
Cypress TrueTouch(tm) Standard Product controllers are found in a wide range of embedded devices. This driver add support for a variety of TTSP controllers. Since the hardware is capable of tracking identifiable contacts, multi-touch protocol type B (stateful) is used to report contact information. The driver is composed of a core driver that process the data sent by the contacts and a set of bus specific interface modules. This patch adds the base core TTSP driver. Signed-off-by: Javier Martinez Canillas <javier@dowhile0.org> Reviewed-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Javier Martinez Canillas
committed by
Dmitry Torokhov
Dmitry Torokhov
parent
31175a8348
commit
4065d1e7b2
@@ -139,7 +139,6 @@ config TOUCHSCREEN_CY8CTMG110
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tristate "cy8ctmg110 touchscreen"
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depends on I2C
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depends on GPIOLIB
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help
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Say Y here if you have a cy8ctmg110 capacitive touchscreen on
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an AAVA device.
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@@ -149,6 +148,37 @@ config TOUCHSCREEN_CY8CTMG110
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To compile this driver as a module, choose M here: the
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module will be called cy8ctmg110_ts.
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config TOUCHSCREEN_CYTTSP_CORE
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tristate "Cypress TTSP touchscreen"
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help
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Say Y here if you have a touchscreen using controller from
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the Cypress TrueTouch(tm) Standard Product family connected
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to your system. You will also need to select appropriate
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bus connection below.
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If unsure, say N.
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To compile this driver as a module, choose M here: the
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module will be called cyttsp_core.
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config TOUCHSCREEN_CYTTSP_I2C
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tristate "support I2C bus connection"
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depends on TOUCHSCREEN_CYTTSP_CORE && I2C
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help
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Say Y here if the touchscreen is connected via I2C bus.
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To compile this driver as a module, choose M here: the
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module will be called cyttsp_i2c.
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config TOUCHSCREEN_CYTTSP_SPI
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tristate "support SPI bus connection"
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depends on TOUCHSCREEN_CYTTSP_CORE && SPI_MASTER
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help
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Say Y here if the touchscreen is connected via SPI bus.
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To compile this driver as a module, choose M here: the
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module will be called cyttsp_spi.
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config TOUCHSCREEN_DA9034
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tristate "Touchscreen support for Dialog Semiconductor DA9034"
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depends on PMIC_DA903X
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@@ -16,8 +16,11 @@ obj-$(CONFIG_TOUCHSCREEN_ATMEL_MXT) += atmel_mxt_ts.o
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obj-$(CONFIG_TOUCHSCREEN_ATMEL_TSADCC) += atmel_tsadcc.o
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obj-$(CONFIG_TOUCHSCREEN_AUO_PIXCIR) += auo-pixcir-ts.o
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obj-$(CONFIG_TOUCHSCREEN_BITSY) += h3600_ts_input.o
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obj-$(CONFIG_TOUCHSCREEN_BU21013) += bu21013_ts.o
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obj-$(CONFIG_TOUCHSCREEN_BU21013) += bu21013_ts.o
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obj-$(CONFIG_TOUCHSCREEN_CY8CTMG110) += cy8ctmg110_ts.o
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obj-$(CONFIG_TOUCHSCREEN_CYTTSP_CORE) += cyttsp_core.o
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obj-$(CONFIG_TOUCHSCREEN_CYTTSP_I2C) += cyttsp_i2c.o
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obj-$(CONFIG_TOUCHSCREEN_CYTTSP_SPI) += cyttsp_spi.o
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obj-$(CONFIG_TOUCHSCREEN_DA9034) += da9034-ts.o
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obj-$(CONFIG_TOUCHSCREEN_DYNAPRO) += dynapro.o
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obj-$(CONFIG_TOUCHSCREEN_HAMPSHIRE) += hampshire.o
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File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,149 @@
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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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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2, and only version 2, as published by the
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* Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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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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*/
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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_cmd;
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u8 mfg_stat;
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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 cyttsp *ts,
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u8 addr, u8 length, const void *values);
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int (*read)(struct cyttsp *ts, u8 addr, u8 length, 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_platform_data *pdata;
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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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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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void cyttsp_remove(struct cyttsp *ts);
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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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@@ -0,0 +1,146 @@
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/*
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* Source for:
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* Cypress TrueTouch(TM) Standard Product (TTSP) I2C touchscreen driver.
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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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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2, and only version 2, as published by the
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* Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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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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*/
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#include "cyttsp_core.h"
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#include <linux/i2c.h>
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#include <linux/input.h>
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#define CY_I2C_DATA_SIZE 128
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static int cyttsp_i2c_read_block_data(struct cyttsp *ts,
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u8 addr, u8 length, void *values)
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{
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struct i2c_client *client = to_i2c_client(ts->dev);
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struct i2c_msg msgs[] = {
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{
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.addr = client->addr,
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.flags = 0,
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.len = 1,
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.buf = &addr,
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},
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{
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.addr = client->addr,
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.flags = I2C_M_RD,
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.len = length,
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.buf = values,
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},
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};
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int retval;
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retval = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
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if (retval < 0)
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return retval;
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return retval != ARRAY_SIZE(msgs) ? -EIO : 0;
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}
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static int cyttsp_i2c_write_block_data(struct cyttsp *ts,
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u8 addr, u8 length, const void *values)
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{
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struct i2c_client *client = to_i2c_client(ts->dev);
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int retval;
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ts->xfer_buf[0] = addr;
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memcpy(&ts->xfer_buf[1], values, length);
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retval = i2c_master_send(client, ts->xfer_buf, length + 1);
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return retval < 0 ? retval : 0;
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}
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static const struct cyttsp_bus_ops cyttsp_i2c_bus_ops = {
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.bustype = BUS_I2C,
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.write = cyttsp_i2c_write_block_data,
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.read = cyttsp_i2c_read_block_data,
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};
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static int __devinit cyttsp_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct cyttsp *ts;
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if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
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dev_err(&client->dev, "I2C functionality not Supported\n");
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return -EIO;
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}
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ts = cyttsp_probe(&cyttsp_i2c_bus_ops, &client->dev, client->irq,
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CY_I2C_DATA_SIZE);
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if (IS_ERR(ts))
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return PTR_ERR(ts);
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i2c_set_clientdata(client, ts);
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return 0;
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}
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static int __devexit cyttsp_i2c_remove(struct i2c_client *client)
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{
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struct cyttsp *ts = i2c_get_clientdata(client);
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cyttsp_remove(ts);
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return 0;
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}
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static const struct i2c_device_id cyttsp_i2c_id[] = {
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{ CY_I2C_NAME, 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, cyttsp_i2c_id);
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static struct i2c_driver cyttsp_i2c_driver = {
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.driver = {
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.name = CY_I2C_NAME,
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.owner = THIS_MODULE,
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.pm = &cyttsp_pm_ops,
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},
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.probe = cyttsp_i2c_probe,
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.remove = __devexit_p(cyttsp_i2c_remove),
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.id_table = cyttsp_i2c_id,
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};
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static int __init cyttsp_i2c_init(void)
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{
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return i2c_add_driver(&cyttsp_i2c_driver);
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}
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module_init(cyttsp_i2c_init);
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static void __exit cyttsp_i2c_exit(void)
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{
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return i2c_del_driver(&cyttsp_i2c_driver);
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}
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module_exit(cyttsp_i2c_exit);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard Product (TTSP) I2C driver");
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MODULE_AUTHOR("Cypress");
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MODULE_ALIAS("i2c:cyttsp");
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@@ -0,0 +1,210 @@
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/*
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* Source for:
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* Cypress TrueTouch(TM) Standard Product (TTSP) SPI touchscreen driver.
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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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* 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.
|
||||
*
|
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* 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.
|
||||
*
|
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* Contact Cypress Semiconductor at www.cypress.com <kev@cypress.com>
|
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*
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*/
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#include "cyttsp_core.h"
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#include <linux/delay.h>
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#include <linux/input.h>
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#include <linux/spi/spi.h>
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#define CY_SPI_WR_OP 0x00 /* r/~w */
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#define CY_SPI_RD_OP 0x01
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#define CY_SPI_CMD_BYTES 4
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#define CY_SPI_SYNC_BYTE 2
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#define CY_SPI_SYNC_ACK1 0x62 /* from protocol v.2 */
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#define CY_SPI_SYNC_ACK2 0x9D /* from protocol v.2 */
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#define CY_SPI_DATA_SIZE 128
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#define CY_SPI_DATA_BUF_SIZE (CY_SPI_CMD_BYTES + CY_SPI_DATA_SIZE)
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#define CY_SPI_BITS_PER_WORD 8
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static int cyttsp_spi_xfer(struct cyttsp *ts,
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u8 op, u8 reg, u8 *buf, int length)
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{
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struct spi_device *spi = to_spi_device(ts->dev);
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struct spi_message msg;
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struct spi_transfer xfer[2];
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u8 *wr_buf = &ts->xfer_buf[0];
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u8 *rd_buf = &ts->xfer_buf[CY_SPI_DATA_BUF_SIZE];
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int retval;
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int i;
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if (length > CY_SPI_DATA_SIZE) {
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dev_err(ts->dev, "%s: length %d is too big.\n",
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__func__, length);
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return -EINVAL;
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}
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memset(wr_buf, 0, CY_SPI_DATA_BUF_SIZE);
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memset(rd_buf, 0, CY_SPI_DATA_BUF_SIZE);
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wr_buf[0] = 0x00; /* header byte 0 */
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wr_buf[1] = 0xFF; /* header byte 1 */
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wr_buf[2] = reg; /* reg index */
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wr_buf[3] = op; /* r/~w */
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if (op == CY_SPI_WR_OP)
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memcpy(wr_buf + CY_SPI_CMD_BYTES, buf, length);
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memset(xfer, 0, sizeof(xfer));
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spi_message_init(&msg);
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/*
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We set both TX and RX buffers because Cypress TTSP
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requires full duplex operation.
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*/
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xfer[0].tx_buf = wr_buf;
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xfer[0].rx_buf = rd_buf;
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switch (op) {
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case CY_SPI_WR_OP:
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xfer[0].len = length + CY_SPI_CMD_BYTES;
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spi_message_add_tail(&xfer[0], &msg);
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break;
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|
||||
case CY_SPI_RD_OP:
|
||||
xfer[0].len = CY_SPI_CMD_BYTES;
|
||||
spi_message_add_tail(&xfer[0], &msg);
|
||||
|
||||
xfer[1].rx_buf = buf;
|
||||
xfer[1].len = length;
|
||||
spi_message_add_tail(&xfer[1], &msg);
|
||||
break;
|
||||
|
||||
default:
|
||||
dev_err(ts->dev, "%s: bad operation code=%d\n", __func__, op);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
retval = spi_sync(spi, &msg);
|
||||
if (retval < 0) {
|
||||
dev_dbg(ts->dev, "%s: spi_sync() error %d, len=%d, op=%d\n",
|
||||
__func__, retval, xfer[1].len, op);
|
||||
|
||||
/*
|
||||
* do not return here since was a bad ACK sequence
|
||||
* let the following ACK check handle any errors and
|
||||
* allow silent retries
|
||||
*/
|
||||
}
|
||||
|
||||
if (rd_buf[CY_SPI_SYNC_BYTE] != CY_SPI_SYNC_ACK1 ||
|
||||
rd_buf[CY_SPI_SYNC_BYTE + 1] != CY_SPI_SYNC_ACK2) {
|
||||
|
||||
dev_dbg(ts->dev, "%s: operation %d failed\n", __func__, op);
|
||||
|
||||
for (i = 0; i < CY_SPI_CMD_BYTES; i++)
|
||||
dev_dbg(ts->dev, "%s: test rd_buf[%d]:0x%02x\n",
|
||||
__func__, i, rd_buf[i]);
|
||||
for (i = 0; i < length; i++)
|
||||
dev_dbg(ts->dev, "%s: test buf[%d]:0x%02x\n",
|
||||
__func__, i, buf[i]);
|
||||
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int cyttsp_spi_read_block_data(struct cyttsp *ts,
|
||||
u8 addr, u8 length, void *data)
|
||||
{
|
||||
return cyttsp_spi_xfer(ts, CY_SPI_RD_OP, addr, data, length);
|
||||
}
|
||||
|
||||
static int cyttsp_spi_write_block_data(struct cyttsp *ts,
|
||||
u8 addr, u8 length, const void *data)
|
||||
{
|
||||
return cyttsp_spi_xfer(ts, CY_SPI_WR_OP, addr, (void *)data, length);
|
||||
}
|
||||
|
||||
static const struct cyttsp_bus_ops cyttsp_spi_bus_ops = {
|
||||
.bustype = BUS_SPI,
|
||||
.write = cyttsp_spi_write_block_data,
|
||||
.read = cyttsp_spi_read_block_data,
|
||||
};
|
||||
|
||||
static int __devinit cyttsp_spi_probe(struct spi_device *spi)
|
||||
{
|
||||
struct cyttsp *ts;
|
||||
int error;
|
||||
|
||||
/* Set up SPI*/
|
||||
spi->bits_per_word = CY_SPI_BITS_PER_WORD;
|
||||
spi->mode = SPI_MODE_0;
|
||||
error = spi_setup(spi);
|
||||
if (error < 0) {
|
||||
dev_err(&spi->dev, "%s: SPI setup error %d\n",
|
||||
__func__, error);
|
||||
return error;
|
||||
}
|
||||
|
||||
ts = cyttsp_probe(&cyttsp_spi_bus_ops, &spi->dev, spi->irq,
|
||||
CY_SPI_DATA_BUF_SIZE * 2);
|
||||
if (IS_ERR(ts))
|
||||
return PTR_ERR(ts);
|
||||
|
||||
spi_set_drvdata(spi, ts);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __devexit cyttsp_spi_remove(struct spi_device *spi)
|
||||
{
|
||||
struct cyttsp *ts = spi_get_drvdata(spi);
|
||||
|
||||
cyttsp_remove(ts);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct spi_driver cyttsp_spi_driver = {
|
||||
.driver = {
|
||||
.name = CY_SPI_NAME,
|
||||
.owner = THIS_MODULE,
|
||||
.pm = &cyttsp_pm_ops,
|
||||
},
|
||||
.probe = cyttsp_spi_probe,
|
||||
.remove = __devexit_p(cyttsp_spi_remove),
|
||||
};
|
||||
|
||||
static int __init cyttsp_spi_init(void)
|
||||
{
|
||||
return spi_register_driver(&cyttsp_spi_driver);
|
||||
}
|
||||
module_init(cyttsp_spi_init);
|
||||
|
||||
static void __exit cyttsp_spi_exit(void)
|
||||
{
|
||||
spi_unregister_driver(&cyttsp_spi_driver);
|
||||
}
|
||||
module_exit(cyttsp_spi_exit);
|
||||
|
||||
MODULE_ALIAS("spi:cyttsp");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard Product (TTSP) SPI driver");
|
||||
MODULE_AUTHOR("Cypress");
|
||||
MODULE_ALIAS("spi:cyttsp");
|
||||
@@ -0,0 +1,58 @@
|
||||
/*
|
||||
* 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_H_
|
||||
#define _CYTTSP_H_
|
||||
|
||||
#define CY_SPI_NAME "cyttsp-spi"
|
||||
#define CY_I2C_NAME "cyttsp-i2c"
|
||||
/* Active Power state scanning/processing refresh interval */
|
||||
#define CY_ACT_INTRVL_DFLT 0x00 /* ms */
|
||||
/* touch timeout for the Active power */
|
||||
#define CY_TCH_TMOUT_DFLT 0xFF /* ms */
|
||||
/* Low Power state scanning/processing refresh interval */
|
||||
#define CY_LP_INTRVL_DFLT 0x0A /* ms */
|
||||
/* Active distance in pixels for a gesture to be reported */
|
||||
#define CY_ACT_DIST_DFLT 0xF8 /* pixels */
|
||||
|
||||
struct cyttsp_platform_data {
|
||||
u32 maxx;
|
||||
u32 maxy;
|
||||
bool use_hndshk;
|
||||
u8 act_dist; /* Active distance */
|
||||
u8 act_intrvl; /* Active refresh interval; ms */
|
||||
u8 tch_tmout; /* Active touch timeout; ms */
|
||||
u8 lp_intrvl; /* Low power refresh interval; ms */
|
||||
int (*init)(void);
|
||||
void (*exit)(void);
|
||||
char *name;
|
||||
s16 irq_gpio;
|
||||
u8 *bl_keys;
|
||||
};
|
||||
|
||||
#endif /* _CYTTSP_H_ */
|
||||
Reference in New Issue
Block a user