From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754566Ab0KIS0O (ORCPT ); Tue, 9 Nov 2010 13:26:14 -0500 Received: from ns2.cypress.com ([157.95.67.5]:63544 "EHLO ns2.cypress.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753025Ab0KIS0K (ORCPT ); Tue, 9 Nov 2010 13:26:10 -0500 From: Kevin McNeely To: Dmitry Torokhov Cc: David Brown , Trilok Soni , Kevin McNeely , Dmitry Torokhov , Henrik Rydberg , Samuel Ortiz , Eric Miao , Simtec Linux Team , Luotao Fu , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] touchscreen: Cypress TTSP G3 MTDEV Core Driver Date: Tue, 9 Nov 2010 10:25:17 -0800 Message-Id: <1289327120-2612-1-git-send-email-kev@cypress.com> X-Mailer: git-send-email 1.7.2.1 In-Reply-To: References: X-Brightmail-Tracker: AAAAAA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Initial release of Cypress TTSP Gen3 Core Driver. Core Driver includes platform data definition file, core driver definition file, and core touchscreen touch handling of device data. Generates multi-touch input events. Signed-off-by: Kevin McNeely --- drivers/input/touchscreen/Kconfig | 8 + drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/cyttsp_core.c | 885 +++++++++++++++++++++++++++++++ drivers/input/touchscreen/cyttsp_core.h | 55 ++ include/linux/input/cyttsp.h | 78 +++ 5 files changed, 1027 insertions(+), 0 deletions(-) create mode 100644 drivers/input/touchscreen/cyttsp_core.c create mode 100644 drivers/input/touchscreen/cyttsp_core.h create mode 100644 include/linux/input/cyttsp.h diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 06ea8da..ee5a31b 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -124,6 +124,14 @@ config TOUCHSCREEN_CY8CTMG110 To compile this driver as a module, choose M here: the module will be called cy8ctmg110_ts. +config TOUCHSCREEN_CYTTSP_CORE + bool "Cypress TTSP touchscreen core" + help + Say Y here if you have a Cypress TTSP touchscreen + connected to your system. + + If unsure, say N. + config TOUCHSCREEN_DA9034 tristate "Touchscreen support for Dialog Semiconductor DA9034" depends on PMIC_DA903X diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index 7cc1b4f..f629af9 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -16,6 +16,7 @@ obj-$(CONFIG_TOUCHSCREEN_ATMEL_TSADCC) += atmel_tsadcc.o obj-$(CONFIG_TOUCHSCREEN_BITSY) += h3600_ts_input.o obj-$(CONFIG_TOUCHSCREEN_BU21013) += bu21013_ts.o obj-$(CONFIG_TOUCHSCREEN_CY8CTMG110) += cy8ctmg110_ts.o +obj-$(CONFIG_TOUCHSCREEN_CYTTSP_CORE) += cyttsp_core.o obj-$(CONFIG_TOUCHSCREEN_DA9034) += da9034-ts.o obj-$(CONFIG_TOUCHSCREEN_DYNAPRO) += dynapro.o obj-$(CONFIG_TOUCHSCREEN_HAMPSHIRE) += hampshire.o diff --git a/drivers/input/touchscreen/cyttsp_core.c b/drivers/input/touchscreen/cyttsp_core.c new file mode 100644 index 0000000..99fd316 --- /dev/null +++ b/drivers/input/touchscreen/cyttsp_core.c @@ -0,0 +1,885 @@ +/* Core Source for: + * Cypress TrueTouch(TM) Standard Product (TTSP) touchscreen drivers. + * For use with Cypress Txx3xx parts. + * Supported parts include: + * CY8CTST341 + * CY8CTMA340 + * + * Copyright (C) 2009, 2010 Cypress Semiconductor, Inc. + * + * 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 + * + */ + +#include "cyttsp_core.h" + +#include +#include +#include +#include +#include + +/* Bootloader File 0 offset */ +#define CY_BL_FILE0 0x00 +/* Bootloader command directive */ +#define CY_BL_CMD 0xFF +/* Bootloader Exit and Verify Checksum command */ +#define CY_BL_EXIT 0xA5 +/* Bootloader number of command keys */ +#define CY_NUM_BL_KEYS 8 +/* Bootloader default command keys */ +#define CY_BL_KEY0 0 +#define CY_BL_KEY1 1 +#define CY_BL_KEY2 2 +#define CY_BL_KEY3 3 +#define CY_BL_KEY4 4 +#define CY_BL_KEY5 5 +#define CY_BL_KEY6 6 +#define CY_BL_KEY7 7 + +/* helpers */ +#define GET_NUM_TOUCHES(x) ((x) & 0x0F) +#define IS_LARGE_AREA(x) (((x) & 0x10) >> 4) +#define IS_BAD_PKT(x) ((x) & 0x20) +#define IS_VALID_APP(x) ((x) & 0x01) +#define IS_OPERATIONAL_ERR(x) ((x) & 0x3F) +#define GET_HSTMODE(reg) ((reg & 0x70) >> 4) +#define GET_BOOTLOADERMODE(reg) ((reg & 0x10) >> 4) + +/* maximum number of concurrent tracks */ +#define CY_NUM_TCH_ID 4 +/* maximum number of track IDs */ +#define CY_NUM_TRK_ID 16 + +#define CY_NTCH 0 /* lift off */ +#define CY_TCH 1 /* touch down */ +#define CY_SMALL_TOOL_WIDTH 10 +#define CY_LARGE_TOOL_WIDTH 255 +#define CY_REG_BASE 0x00 +#define CY_REG_GEST_SET 0x1E +#define CY_REG_ACT_INTRVL 0x1D +#define CY_REG_TCH_TMOUT (CY_REG_ACT_INTRVL+1) +#define CY_REG_LP_INTRVL (CY_REG_TCH_TMOUT+1) +#define CY_MAXZ 255 +#define CY_DELAY_SYSINFO 20 /* ms */ +#define CY_HNDSHK_BIT 0x80 +/* device mode bits */ +#define CY_OPERATE_MODE 0x00 +#define CY_SYSINFO_MODE 0x10 +/* power mode select bits */ +#define CY_SOFT_RESET_MODE 0x01 /* return to Bootloader mode */ +#define CY_DEEP_SLEEP_MODE 0x02 +#define CY_LOW_POWER_MODE 0x04 + +/* Touch structure */ +struct cyttsp_touch { + u16 x __attribute__ ((packed)); + u16 y __attribute__ ((packed)); + u8 z; +}; + +/* TrueTouch Standard Product Gen3 interface definition */ +struct cyttsp_xydata { + u8 hst_mode; + u8 tt_mode; + u8 tt_stat; + struct cyttsp_touch tch1; + u8 touch12_id; + struct cyttsp_touch tch2; + u8 gest_cnt; + u8 gest_id; + struct cyttsp_touch tch3; + u8 touch34_id; + struct cyttsp_touch tch4; + u8 tt_undef[3]; + u8 gest_set; + u8 tt_reserved; +}; + +/* TTSP System Information interface definition */ +struct cyttsp_sysinfo_data { + u8 hst_mode; + u8 mfg_cmd; + u8 mfg_stat; + 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_tch { + struct cyttsp_touch *tch; + u8 *id; +}; + +struct cyttsp_trk { + u8 tch; + u8 w; + u16 x; + u16 y; + u8 z; +}; + +struct cyttsp { + struct device *dev; + int irq; + struct input_dev *input; + struct mutex mutex; + char phys[32]; + struct bus_type *bus_type; + struct cyttsp_platform_data *platform_data; + struct cyttsp_xydata xy_data; + struct cyttsp_bootloader_data bl_data; + struct cyttsp_sysinfo_data sysinfo_data; + struct cyttsp_trk prv_trk[CY_NUM_TRK_ID]; + struct cyttsp_tch tch_map[CY_NUM_TCH_ID]; + struct cyttsp_bus_ops *bus_ops; + struct timer_list to_timer; + bool bl_ready; +}; + +struct cyttsp_track_data { + struct cyttsp_trk cur_trk[CY_NUM_TRK_ID]; +}; + +static const u8 bl_command[] = { + CY_BL_FILE0, CY_BL_CMD, CY_BL_EXIT, + CY_BL_KEY0, CY_BL_KEY1, CY_BL_KEY2, + CY_BL_KEY3, CY_BL_KEY4, CY_BL_KEY5, + CY_BL_KEY6, CY_BL_KEY7 +}; + +static int ttsp_read_block_data(struct cyttsp *ts, u8 command, + u8 length, void *buf) +{ + int retval; + int tries; + + if (!buf || !length) + return -EIO; + + for (tries = 0, retval = -1; + tries < CY_NUM_RETRY && (retval < 0); + tries++) + retval = ts->bus_ops->read(ts->bus_ops, command, length, buf); + + return retval; +} + +static int ttsp_write_block_data(struct cyttsp *ts, u8 command, + u8 length, void *buf) +{ + int retval; + if (!buf || !length) + return -EIO; + + retval = ts->bus_ops->write(ts->bus_ops, command, length, buf); + + return retval; +} + +static int ttsp_tch_ext(struct cyttsp *ts, void *buf) +{ + int retval; + + if (!buf) + return -EIO; + + retval = ts->bus_ops->ext(ts->bus_ops, buf); + + return retval; +} + +static irqreturn_t cyttsp_bl_ready_irq(int irq, void *handle) +{ + struct cyttsp *ts = handle; + + ts->bl_ready = true; + return IRQ_HANDLED; +} + +static int cyttsp_load_bl_regs(struct cyttsp *ts) +{ + int retval; + + memset(&(ts->bl_data), 0, sizeof(struct cyttsp_bootloader_data)); + + retval = ttsp_read_block_data(ts, CY_REG_BASE, + sizeof(ts->bl_data), &(ts->bl_data)); + + return retval; +} + +static int cyttsp_bl_app_valid(struct cyttsp *ts) +{ + int retval; + + retval = cyttsp_load_bl_regs(ts); + + if (retval < 0) + return -ENODEV; + + if (GET_BOOTLOADERMODE(ts->bl_data.bl_status)) { + if (IS_VALID_APP(ts->bl_data.bl_status)) { + dev_dbg(ts->dev, "%s: App found; normal boot\n", + __func__); + return 0; + } else { + dev_dbg(ts->dev, "%s: NO APP; load firmware!!\n", + __func__); + return -ENODEV; + } + } else if (GET_HSTMODE(ts->bl_data.bl_file) == CY_OPERATE_MODE) { + if (!(IS_OPERATIONAL_ERR(ts->bl_data.bl_status))) { + dev_dbg(ts->dev, "%s: Operational\n", + __func__); + return 1; + } else { + dev_dbg(ts->dev, "%s: Operational failure\n", + __func__); + return -ENODEV; + } + } else { + dev_dbg(ts->dev, "%s: Non-Operational failure\n", + __func__); + return -ENODEV; + } + +} + +static bool cyttsp_wait_bl_ready(struct cyttsp *ts, int loop_delay, int max_try) +{ + int tries = 0; + + ts->bl_ready = false; /* wait for interrupt to set ready flag */ + + while (!ts->bl_ready && (tries++ < max_try)) + msleep(loop_delay); + + if (tries < max_try) + return true; + else + return false; +} + +static int cyttsp_exit_bl_mode(struct cyttsp *ts) +{ + int retval; + int tries = 0; + u8 bl_cmd[sizeof(bl_command)]; + + memcpy(bl_cmd, bl_command, sizeof(bl_command)); + if (ts->platform_data->bl_keys) + memcpy(&bl_cmd[sizeof(bl_command) - CY_NUM_BL_KEYS], + ts->platform_data->bl_keys, sizeof(bl_command)); + + dev_dbg(ts->dev, + "%s: bl_cmd= " + "%02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X\n", + __func__, bl_cmd[0], bl_cmd[1], bl_cmd[2], + bl_cmd[3], bl_cmd[4], bl_cmd[5], bl_cmd[6], + bl_cmd[7], bl_cmd[8], bl_cmd[9], bl_cmd[10]); + + retval = ttsp_write_block_data(ts, CY_REG_BASE, + sizeof(bl_cmd), (void *)bl_cmd); + if (retval < 0) + return retval; + + do { + msleep(500); + retval = cyttsp_load_bl_regs(ts); + } while (GET_BOOTLOADERMODE(ts->bl_data.bl_status) && + tries++ < 10 && + !(retval < 0)); + + if (retval < 0) + return retval; + else if (GET_BOOTLOADERMODE(ts->bl_data.bl_status)) + return -ENODEV; + else + return 0; +} + +static int cyttsp_set_operational_mode(struct cyttsp *ts) +{ + int retval; + u8 cmd = CY_OPERATE_MODE; + + retval = ttsp_write_block_data(ts, CY_REG_BASE, sizeof(cmd), &cmd); + + if (retval < 0) + return retval; + + /* wait for TTSP Device to complete switch to Operational mode */ + msleep(500); + + return retval; +} + +static int cyttsp_set_sysinfo_mode(struct cyttsp *ts) +{ + int retval; + u8 cmd = CY_SYSINFO_MODE; + + memset(&(ts->sysinfo_data), 0, sizeof(struct cyttsp_sysinfo_data)); + + /* switch to sysinfo mode */ + retval = ttsp_write_block_data(ts, CY_REG_BASE, sizeof(cmd), &cmd); + if (retval < 0) + return retval; + + msleep(500); + + /* read sysinfo registers */ + retval = ttsp_read_block_data(ts, CY_REG_BASE, + sizeof(ts->sysinfo_data), &(ts->sysinfo_data)); + + dev_info(ts->dev, "%s: tv=%02X%02X ai=0x%02X%02X " + "av=0x%02X%02X ci=0x%02X%02X%02X\n", "cyttsp", + ts->sysinfo_data.tts_verh, ts->sysinfo_data.tts_verl, + ts->sysinfo_data.app_idh, ts->sysinfo_data.app_idl, + ts->sysinfo_data.app_verh, ts->sysinfo_data.app_verl, + ts->sysinfo_data.cid[0], ts->sysinfo_data.cid[1], + ts->sysinfo_data.cid[2]); + + return retval; +} + +static int cyttsp_set_sysinfo_regs(struct cyttsp *ts) +{ + int retval = 0; + + if ((ts->platform_data->act_intrvl != CY_ACT_INTRVL_DFLT) || + (ts->platform_data->tch_tmout != CY_TCH_TMOUT_DFLT) || + (ts->platform_data->lp_intrvl != CY_LP_INTRVL_DFLT)) { + + u8 intrvl_ray[3]; + + intrvl_ray[0] = ts->platform_data->act_intrvl; + intrvl_ray[1] = ts->platform_data->tch_tmout; + intrvl_ray[2] = ts->platform_data->lp_intrvl; + + /* set intrvl registers */ + retval = ttsp_write_block_data(ts, + CY_REG_ACT_INTRVL, + sizeof(intrvl_ray), intrvl_ray); + + msleep(CY_DELAY_SYSINFO); + } + + return retval; +} + +static int cyttsp_soft_reset(struct cyttsp *ts) +{ + int retval; + u8 cmd = CY_SOFT_RESET_MODE; + + /* enable bootloader interrupts */ + retval = request_irq(ts->irq, cyttsp_bl_ready_irq, + IRQF_TRIGGER_FALLING, ts->platform_data->name, ts); + if (retval) + return retval; + + retval = ttsp_write_block_data(ts, CY_REG_BASE, sizeof(cmd), &cmd); + if (!retval) { + if (!cyttsp_wait_bl_ready(ts, 20, 100)) + retval = -ENODEV; + else + retval = 0; + } + + free_irq(ts->irq, ts); + return retval; +} + +static int cyttsp_gesture_setup(struct cyttsp *ts) +{ + int retval; + u8 gesture_setup; + + /* Init gesture; active distance setup */ + gesture_setup = ts->platform_data->gest_set; + retval = ttsp_write_block_data(ts, CY_REG_GEST_SET, + sizeof(gesture_setup), &gesture_setup); + + return retval; +} + +static void cyttsp_init_tch_map(struct cyttsp *ts) +{ + ts->tch_map[0].tch = &ts->xy_data.tch1; + ts->tch_map[0].id = &ts->xy_data.touch12_id; + ts->tch_map[1].tch = &ts->xy_data.tch2; + ts->tch_map[1].id = &ts->xy_data.touch12_id; + ts->tch_map[2].tch = &ts->xy_data.tch3; + ts->tch_map[2].id = &ts->xy_data.touch34_id; + ts->tch_map[3].tch = &ts->xy_data.tch4; + ts->tch_map[3].id = &ts->xy_data.touch34_id; +} + +static void cyttsp_init_prv_trks(struct cyttsp *ts) +{ + /* init the touch structures */ + memset(ts->prv_trk, CY_NTCH, sizeof(ts->prv_trk)); +} + +static void cyttsp_init_cur_trks(struct cyttsp_track_data *t) +{ + memset(t->cur_trk, CY_NTCH, sizeof(t->cur_trk)); +} + +static int cyttsp_hndshk(struct cyttsp *ts, u8 hst_mode) +{ + int retval; + u8 cmd; + + cmd = hst_mode & CY_HNDSHK_BIT ? + hst_mode & ~CY_HNDSHK_BIT : + hst_mode | CY_HNDSHK_BIT; + + retval = ttsp_write_block_data(ts, CY_REG_BASE, + sizeof(cmd), (u8 *)&cmd); + + return retval; +} + +static void handle_multi_touch(struct cyttsp_track_data *t, struct cyttsp *ts) +{ + u8 id; + u8 cnt = 0; + + /* terminate any previous touch where the track + * is missing from the current event + */ + for (id = 0; id < CY_NUM_TRK_ID; id++) { + if (t->cur_trk[id].tch) { + /* put active current track data */ + input_report_abs(ts->input, + ABS_MT_TRACKING_ID, id); + input_report_abs(ts->input, + ABS_MT_WIDTH_MAJOR, t->cur_trk[id].w); + input_report_abs(ts->input, + ABS_MT_POSITION_X, t->cur_trk[id].x); + input_report_abs(ts->input, + ABS_MT_POSITION_Y, t->cur_trk[id].y); + input_report_abs(ts->input, + ABS_MT_TOUCH_MAJOR, t->cur_trk[id].z); + input_mt_sync(ts->input); + + dev_dbg(ts->dev, "%s: MT1: X=%d Y=%d Z=%d\n", + __func__, + t->cur_trk[id].x, + t->cur_trk[id].y, + t->cur_trk[id].z); + /* save current track data into previous track data */ + ts->prv_trk[id] = t->cur_trk[id]; + cnt++; + } else if (ts->prv_trk[id].tch) { + /* put lift-off previous track data */ + input_report_abs(ts->input, + ABS_MT_TRACKING_ID, id); + input_report_abs(ts->input, + ABS_MT_WIDTH_MAJOR, ts->prv_trk[id].w); + input_report_abs(ts->input, + ABS_MT_POSITION_X, ts->prv_trk[id].x); + input_report_abs(ts->input, + ABS_MT_POSITION_Y, ts->prv_trk[id].y); + input_report_abs(ts->input, + ABS_MT_TOUCH_MAJOR, CY_NTCH); + input_mt_sync(ts->input); + + dev_dbg(ts->dev, "%s: MT1: X=%d Y=%d Z=%d lift-off\n", + __func__, + ts->prv_trk[id].x, + ts->prv_trk[id].y, + CY_NTCH); + ts->prv_trk[id].tch = CY_NTCH; + cnt++; + } + } + + /* signal the view motion event */ + if (cnt) + input_sync(ts->input); +} + +static void cyttsp_get_xydata(struct cyttsp *ts, + struct cyttsp_track_data *t, + u8 id, u8 w, u16 x, u16 y, u8 z) +{ + struct cyttsp_trk *trk; + + trk = &(t->cur_trk[id]); + trk->tch = CY_TCH; + trk->w = w; + trk->x = x; + trk->y = y; + trk->z = z; +} + +static int cyttsp_xy_worker(struct cyttsp *ts) +{ + u8 cur_tch = 0; + u8 tch; + struct cyttsp_track_data trk; + + /* get event data from CYTTSP device */ + if (ttsp_read_block_data(ts, + CY_REG_BASE, sizeof(struct cyttsp_xydata), &ts->xy_data)) + return 0; + + /* touch extension handling */ + if (ttsp_tch_ext(ts, &ts->xy_data)) + return 0; + + /* provide flow control handshake */ + if (ts->platform_data->use_hndshk) + if (cyttsp_hndshk(ts, ts->xy_data.hst_mode)) + return 0; + + cur_tch = GET_NUM_TOUCHES(ts->xy_data.tt_stat); + + if (ts->bus_ops->power_state == CY_IDLE_STATE) + return 0; + else if (GET_BOOTLOADERMODE(ts->xy_data.tt_mode)) { + return -1; + } else if (IS_LARGE_AREA(ts->xy_data.tt_stat) == 1) { + /* terminate all active tracks */ + cur_tch = CY_NTCH; + dev_dbg(ts->dev, "%s: Large area detected\n", __func__); + } else if (cur_tch > CY_NUM_TCH_ID) { + /* terminate all active tracks */ + cur_tch = CY_NTCH; + dev_dbg(ts->dev, "%s: Num touch error detected\n", __func__); + } else if (IS_BAD_PKT(ts->xy_data.tt_mode)) { + /* terminate all active tracks */ + cur_tch = CY_NTCH; + dev_dbg(ts->dev, "%s: Invalid buffer detected\n", __func__); + } + + /* process the touches */ + cyttsp_init_cur_trks(&trk); + + for (tch = 0; tch < cur_tch; tch++) { + cyttsp_get_xydata(ts, &trk, + tch & 0x01 ? + (*(ts->tch_map[tch].id) & 0x0F) : + (*(ts->tch_map[tch].id) & 0xF0) >> 4, + CY_SMALL_TOOL_WIDTH, + be16_to_cpu((ts->tch_map[tch].tch)->x), + be16_to_cpu((ts->tch_map[tch].tch)->y), + (ts->tch_map[tch].tch)->z); + } + + handle_multi_touch(&trk, ts); + + return 0; +} + +static irqreturn_t cyttsp_irq(int irq, void *handle) +{ + struct cyttsp *ts = handle; + int retval; + + retval = cyttsp_xy_worker(ts); + + if (retval < 0) { + /* TTSP device has reset back to bootloader mode + * Reset driver touch history and restore operational mode + */ + cyttsp_init_prv_trks(ts); + retval = cyttsp_exit_bl_mode(ts); + if (retval) + ts->bus_ops->power_state = CY_IDLE_STATE; + dev_info(ts->dev, "%s: %s\n", + __func__, + (ts->bus_ops->power_state == CY_ACTIVE_STATE) ? + "ACTIVE" : "IDLE"); + } + return IRQ_HANDLED; +} + +static int cyttsp_power_on(struct cyttsp *ts) +{ + int retval = 0; + + ts->bus_ops->power_state = CY_IDLE_STATE; + + retval = cyttsp_bl_app_valid(ts); + if (retval < 0) + goto bypass; + else if (retval > 0) { + retval = cyttsp_soft_reset(ts); + if (retval < 0) + goto bypass; + } + + retval = cyttsp_exit_bl_mode(ts); + if (retval < 0) + goto bypass; + + retval = cyttsp_set_sysinfo_mode(ts); + if (retval < 0) + goto bypass; + + retval = cyttsp_set_sysinfo_regs(ts); + if (retval < 0) + goto bypass; + + retval = cyttsp_set_operational_mode(ts); + if (retval < 0) + goto bypass; + + /* enable touch interrupts */ + retval = request_threaded_irq(ts->irq, NULL, cyttsp_irq, + IRQF_TRIGGER_FALLING | IRQF_ONESHOT, + ts->platform_data->name, ts); + if (retval < 0) + goto bypass; + + /* init gesture setup; required for active distance */ + retval = cyttsp_gesture_setup(ts); + +bypass: + if (!retval) + ts->bus_ops->power_state = CY_ACTIVE_STATE; + + dev_info(ts->dev, "%s: %s\n", + __func__, + (ts->bus_ops->power_state == CY_ACTIVE_STATE) ? + "ACTIVE" : "IDLE"); + return retval; +} + +#ifdef CONFIG_PM +int cyttsp_resume(void *handle) +{ + struct cyttsp *ts = handle; + int retval = 0; + struct cyttsp_xydata xydata; + + if (ts->platform_data->use_sleep && (ts->bus_ops->power_state != + CY_ACTIVE_STATE)) { + if (ts->platform_data->wakeup) { + retval = ts->platform_data->wakeup(); + if (retval < 0) + dev_dbg(ts->dev, "%s: Error, wakeup failed!\n", + __func__); + } else { + dev_dbg(ts->dev, "%s: Error, wakeup not implemented " + "(check board file).\n", __func__); + retval = -ENOSYS; + } + if (!(retval < 0)) { + retval = ttsp_read_block_data(ts, CY_REG_BASE, + sizeof(xydata), &xydata); + if (!(retval < 0) && !GET_HSTMODE(xydata.hst_mode)) + ts->bus_ops->power_state = CY_ACTIVE_STATE; + } + } + dev_dbg(ts->dev, "%s: Wake Up %s\n", __func__, + (retval < 0) ? "FAIL" : "PASS"); + return retval; +} +EXPORT_SYMBOL_GPL(cyttsp_resume); + +int cyttsp_suspend(void *handle) +{ + struct cyttsp *ts = handle; + u8 sleep_mode = 0; + int retval = 0; + + if (ts->platform_data->use_sleep && + (ts->bus_ops->power_state == CY_ACTIVE_STATE)) { + sleep_mode = CY_DEEP_SLEEP_MODE; + retval = ttsp_write_block_data(ts, + CY_REG_BASE, sizeof(sleep_mode), &sleep_mode); + if (!(retval < 0)) + ts->bus_ops->power_state = CY_SLEEP_STATE; + } + dev_dbg(ts->dev, "%s: Sleep Power state is %s\n", __func__, + (ts->bus_ops->power_state == CY_ACTIVE_STATE) ? + "ACTIVE" : + ((ts->bus_ops->power_state == CY_SLEEP_STATE) ? + "SLEEP" : "LOW POWER")); + return retval; +} +EXPORT_SYMBOL_GPL(cyttsp_suspend); +#endif + +int cyttsp_core_init(struct cyttsp_bus_ops *bus_ops, + struct device *dev, void *handle) +{ + struct input_dev *input_device; + struct cyttsp *ts; + int retval = 0; + + if ((dev == NULL) || (bus_ops == NULL)) + goto error_alloc_data; + + ts = kzalloc(sizeof(*ts), GFP_KERNEL); + if (ts == NULL) { + dev_dbg(ts->dev, "%s: Error, kzalloc\n", __func__); + retval = -ENOMEM; + goto error_alloc_data; + } + mutex_init(&ts->mutex); + ts->dev = dev; + ts->platform_data = dev->platform_data; + ts->bus_ops = bus_ops; + ts->platform_data->dev = ts->dev; + + if (ts->platform_data->init) { + retval = ts->platform_data->init(ts->platform_data, 1); + if (retval) { + dev_dbg(ts->dev, "%s: Error, platform init failed!\n", + __func__); + retval = -EIO; + goto error_init; + } + } + + ts->irq = gpio_to_irq(ts->platform_data->irq_gpio); + if (ts->irq <= 0) { + dev_dbg(ts->dev, "%s: Error, failed to allocate irq\n", + __func__); + retval = -EIO; + goto error_init; + } + + /* Create the input device and register it. */ + input_device = input_allocate_device(); + if (!input_device) { + retval = -ENOMEM; + dev_dbg(ts->dev, "%s: Error, failed to allocate input device\n", + __func__); + retval = -ENODEV; + goto error_input_allocate_device; + } + + ts->input = input_device; + input_device->name = ts->platform_data->name; + input_device->phys = ts->phys; + input_device->dev.parent = ts->dev; + ts->bus_type = bus_ops->dev->bus; + + cyttsp_init_tch_map(ts); + cyttsp_init_prv_trks(ts); + + __set_bit(EV_SYN, input_device->evbit); + __set_bit(EV_KEY, input_device->evbit); + __set_bit(EV_ABS, input_device->evbit); + + input_set_abs_params(input_device, ABS_MT_POSITION_X, + 0, ts->platform_data->maxx, 0, 0); + input_set_abs_params(input_device, ABS_MT_POSITION_Y, + 0, ts->platform_data->maxy, 0, 0); + input_set_abs_params(input_device, ABS_MT_TOUCH_MAJOR, + 0, CY_MAXZ, 0, 0); + input_set_abs_params(input_device, ABS_MT_WIDTH_MAJOR, + 0, CY_LARGE_TOOL_WIDTH, 0, 0); + input_set_abs_params(input_device, ABS_MT_TRACKING_ID, + 0, CY_NUM_TRK_ID, 0, 0); + + retval = input_register_device(input_device); + if (retval) { + dev_dbg(ts->dev, "%s: Error, failed to register input device\n", + __func__); + retval = -ENODEV; + goto error_input_register_device; + } + + retval = cyttsp_power_on(ts); + + if (retval < 0) { + dev_dbg(ts->dev, "%s: Error, power on failed!\n", __func__); + retval = -ENODEV; + goto error_power_on; + } + + handle = ts; + goto no_error; + +error_power_on: + free_irq(ts->irq, ts); +error_input_register_device: + input_unregister_device(input_device); +error_input_allocate_device: + if (ts->platform_data->init) + ts->platform_data->init(ts->platform_data, 0); +error_init: + mutex_destroy(&ts->mutex); + kfree(ts); +error_alloc_data: + handle = NULL; +no_error: + return retval; +} +EXPORT_SYMBOL_GPL(cyttsp_core_init); + +/* registered in driver struct */ +void cyttsp_core_release(void *handle) +{ + struct cyttsp *ts = handle; + + mutex_destroy(&ts->mutex); + free_irq(ts->irq, ts); + input_unregister_device(ts->input); + if (ts->platform_data->init) + ts->platform_data->init(ts->platform_data, 0); + kfree(ts); +} +EXPORT_SYMBOL_GPL(cyttsp_core_release); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard touchscreen driver core"); +MODULE_AUTHOR("Cypress"); + diff --git a/drivers/input/touchscreen/cyttsp_core.h b/drivers/input/touchscreen/cyttsp_core.h new file mode 100644 index 0000000..43fe438 --- /dev/null +++ b/drivers/input/touchscreen/cyttsp_core.h @@ -0,0 +1,55 @@ +/* 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 Cypress Semiconductor, Inc. + * + * 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 + * + */ + + +#ifndef __CYTTSP_CORE_H__ +#define __CYTTSP_CORE_H__ + +#include +#include + +#define CY_NUM_RETRY 4 /* max number of retries for read ops */ + + +struct cyttsp_bus_ops { + s32 (*write)(void *handle, u8 addr, u8 length, const void *values); + s32 (*read)(void *handle, u8 addr, u8 length, void *values); + s32 (*ext)(void *handle, void *values); + struct device *dev; + enum cyttsp_powerstate power_state; +}; + +int cyttsp_core_init(struct cyttsp_bus_ops *bus_ops, + struct device *dev, void *handle); + +void cyttsp_core_release(void *handle); +#ifdef CONFIG_PM +int cyttsp_resume(void *handle); +int cyttsp_suspend(void *handle); +#endif + +#endif /* __CYTTSP_CORE_H__ */ diff --git a/include/linux/input/cyttsp.h b/include/linux/input/cyttsp.h new file mode 100644 index 0000000..5280252 --- /dev/null +++ b/include/linux/input/cyttsp.h @@ -0,0 +1,78 @@ +/* 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 Cypress Semiconductor, Inc. + * + * 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 +/* touch timeout for the Active power */ +#define CY_TCH_TMOUT_DFLT 0xFF +/* Low Power state scanning/processing refresh interval */ +#define CY_LP_INTRVL_DFLT 0x0A +/* + * Active distance in pixels for a gesture to be reported + * if set to 0, then all gesture movements are reported + * Valid range is 0 - 15 + */ +#define CY_ACT_DIST_DFLT 8 +#define CY_ACT_DIST CY_ACT_DIST_DFLT + +enum cyttsp_gest { + CY_GEST_GRP_NONE = 0, + CY_GEST_GRP1 = 0x10, + CY_GEST_GRP2 = 0x20, + CY_GEST_GRP3 = 0x40, + CY_GEST_GRP4 = 0x80, +}; + +enum cyttsp_powerstate { + CY_IDLE_STATE, + CY_ACTIVE_STATE, + CY_LOW_PWR_STATE, + CY_SLEEP_STATE, +}; + +struct cyttsp_platform_data { + struct device *dev; + u32 maxx; + u32 maxy; + unsigned use_hndshk:1; + unsigned use_sleep:1; + u8 gest_set; /* 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 (*wakeup)(void); + int (*init)(struct cyttsp_platform_data *, int on_off); + char *name; + s16 irq_gpio; + u8 *bl_keys; +}; + +#endif /* _CYTTSP_H_ */ -- 1.7.2.1