From patchwork Tue Feb 2 07:06:12 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Mika_Penttil=C3=A4?= X-Patchwork-Id: 8187141 Return-Path: X-Original-To: patchwork-linux-input@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 6DFCCBEEE5 for ; Tue, 2 Feb 2016 07:06:37 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C15282021F for ; Tue, 2 Feb 2016 07:06:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F40732021B for ; Tue, 2 Feb 2016 07:06:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753031AbcBBHGd (ORCPT ); Tue, 2 Feb 2016 02:06:33 -0500 Received: from mail-am1on0071.outbound.protection.outlook.com ([157.56.112.71]:28448 "EHLO emea01-am1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752378AbcBBHGc (ORCPT ); Tue, 2 Feb 2016 02:06:32 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=NextfourGroupOy.onmicrosoft.com; s=selector1-nextfour-com; h=From:To:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=XB+DYF14shgPrEkQV4ww5NUcwbro7ZkBLQMs6/2qNzg=; b=LhUWNCe5D+isDCb7FG6i7PX47pqy0c10JZJAa8slqxADiz1STGh1k4CP4mnoWis4/28LKN3XE+dtBE3RSrNH57gN589ZIqrn9Rux9QphLyMPvn2aPwoE8c6YoyRYle0WHDAtO42c+J+gKSs9wWZqoQyYX8Xoisv/khe1jfc6mOE= Authentication-Results: vger.kernel.org; dkim=none (message not signed) header.d=none;vger.kernel.org; dmarc=none action=none header.from=nextfour.com; Received: from mjp-ThinkCentre-M92p.nextfour.com (194.157.170.34) by VI1PR07MB0911.eurprd07.prod.outlook.com (10.161.109.11) with Microsoft SMTP Server (TLS) id 15.1.396.15; Tue, 2 Feb 2016 07:06:29 +0000 From: To: CC: , , =?UTF-8?q?Mika=20Penttil=C3=A4?= Subject: [PATCH v2 1/2] Input: Driver for SiS 9200 family I2C touchscreen controller. Date: Tue, 2 Feb 2016 09:06:12 +0200 Message-ID: <1454396773-29079-2-git-send-email-mika.penttila@nextfour.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1454396773-29079-1-git-send-email-mika.penttila@nextfour.com> References: <1454396773-29079-1-git-send-email-mika.penttila@nextfour.com> MIME-Version: 1.0 X-Originating-IP: [194.157.170.34] X-ClientProxiedBy: HE1PR06CA0082.eurprd06.prod.outlook.com (25.164.28.178) To VI1PR07MB0911.eurprd07.prod.outlook.com (25.161.109.11) X-Microsoft-Exchange-Diagnostics: 1; VI1PR07MB0911; 2:dwtwwzIdsfR1wRiuJKizxzr4HBwjIRW6FuxTMDu0kh01HuPnQzYZCVoJM4L7VipVuJUfukUKfpqOI6adOti21kJTAOoohLak3mNIQH8UNfA3txR9tKluhjRhqmVs+HkfUAXCf3JW3FNRgUt+qrOyDw==; 3:4YpQHU6QFU3RTwLUixkEgKXoQKFYQTB5Eiqcx4ExzR9MwVQ2blHhZyuvWPUQLVK4+X7oalDmI4V/mrTuq5tH8mPEjTPSvu7H1r7rAZc3JTajzRujIvUX8zBMRmJc/SZB; 25:kFGC4C05gkuXnFBUEaAO7QrvHUZd16dWIHBQ8A69/aHC2mCnx3psnj9gFadhOeR8cABjpZODi5ArI6jsCUHilSezKGrbsL8ZtUi6wkV9r33ZA2f/ypRc89fL7BGDd2B+zOJfgzW1dqd12MzvTF3jOjlHwFHSaVtGLjotJMnx0G5cHxUI7JPmIX/KBjVLA7QN6uBDad+11jVILCxs2WxWWUo57f5Ihvh36eNBCj2/p0jnBkNjP4wRxDf0oqDXzVz6; 4:MEukpECB0LP37empicTu3jJCJ0B/8tvq1VVXDJ813CsUMbQtL4OUlV578KiTGyfBkfumtO5k2GJMCLGOoZRSYoZLOVUBS3okUIeR6YP5OIjds+C6fMRRCKs9GAvyO2rBIjosv3eQnyvx223osKraSM6Hl40a3icQ9KhwxgDoIG63IMf75jcvPWF6LLh4fqhd/pWWvdIPQryW1u9rK8TpuLuTWaCmqqHgUSUhman1WYY0U88iTLx1kWEDUUrQrqlsc7kJ9XRI9kYg+ICoi6h1Op6ABZzd52N0dpBRJIi/86e6sEewa0n+zEuiXKipU63R2XjAZyVB2vgu8FRFDLvJxrFagZY2WXgxUhlMMiyaWmn9JGlMUoYlws7ikoCvpkfL X-Microsoft-Antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:VI1PR07MB0911; X-MS-Office365-Filtering-Correlation-Id: 19a0ec5f-a83c-468d-da27-08d32b9f5fd1 X-Microsoft-Antispam-PRVS: X-Exchange-Antispam-Report-Test: UriScan:; X-Exchange-Antispam-Report-CFA-Test: BCL:0; PCL:0; RULEID:(601004)(2401047)(5005006)(8121501046)(10201501046)(3002001); SRVR:VI1PR07MB0911; BCL:0; PCL:0; RULEID:; SRVR:VI1PR07MB0911; X-Forefront-PRVS: 084080FC15 X-Forefront-Antispam-Report: SFV:NSPM; SFS:(10009020)(6009001)(2876002)(4326007)(2906002)(2870700001)(87976001)(5008740100001)(23676002)(5004730100002)(3846002)(4001430100002)(6116002)(122386002)(586003)(5820100001)(3470700001)(40100003)(110136002)(50466002)(107886002)(92566002)(1096002)(5001960100002)(33646002)(42186005)(575784001)(36756003)(2950100001)(50226001)(2351001)(77096005)(229853001)(86152002)(50986999)(19580395003)(19580405001)(189998001)(86362001)(76176999)(53416004)(66066001)(47776003); DIR:OUT; SFP:1101; SCL:1; SRVR:VI1PR07MB0911; H:mjp-ThinkCentre-M92p.nextfour.com; FPR:; SPF:None; MLV:sfv; LANG:en; X-Microsoft-Exchange-Diagnostics: =?utf-8?B?MTtWSTFQUjA3TUIwOTExOzIzOld2cHIwVmxWS0JFWVFZRW1PUGhaMmdWeGRl?= =?utf-8?B?aTlWOHRvd3IvK1M4Mk0rRUFFZ2VjQ0U2T3B5dVZNOG9OQ3VJdHFHdVBRWkY3?= =?utf-8?B?b0dPWlp3YlJFSVhBSGJjVnU1dHF4RmF4aUh4K2NPcW9xNXpITGRxQUdHOVVO?= =?utf-8?B?WFFNOUdLMy9pa0N2ZE9NcTdCZkNvTEFZRTk0U2s0cUhLUTdMbEtocTRwV0tn?= =?utf-8?B?Ynh0dnp6NWxOalM1c2JkYjBERGtHaVNaQUNNbUNQb0U1bkpwd0VQRkZFMDJO?= =?utf-8?B?ZGgrVzVPVm1tNCtmQjYyNnlQYjlXNmJIM3hDUGU5UnBTL216Y1ZOaGM2SUVH?= =?utf-8?B?QjFJT3NKVkU4UWx2OWNQQWlwYVpmZ1JubWNrMGNHUTYrcTRGd2NlQmlNMUE2?= =?utf-8?B?ZmFyclZJSDl2VWhaL040UW16QUZiSHcxLzMzQXJ5b2Z1QTk2RU5mbXRZVHpr?= =?utf-8?B?czhBQjhwVktwVkdUMVdaaDNDTjdQbU1VRTMrb0ZQU0dBNVFwcVZLcGFNcDh6?= =?utf-8?B?a0hxYzhlbW5XTDJma2VubFJQbHEwb2ZHTWZ0TXZ2OEc1OG1rd2piV0MzSkpW?= =?utf-8?B?ZzNSMS9Pb2lIbGtzajlPc0pLZFJ2Q3MvV1kzRmRXR29IZnN6bXBmM0cyVjE5?= =?utf-8?B?bmJoaGJVY29LRVI4eWt4bStqTVhlcC9mOEtHNkdzMm4wdTBEUHMzOGVzb1lt?= =?utf-8?B?bEh5YmN2L0JVclhWcmVrYjRvN2FUZm9vVkxUQWtnT3NvcVpLdkttcDFjaDV3?= =?utf-8?B?NGdpMTNuNXF4NWZSNGhFMFM5dkZNQVJzaks1Z3dFNldvV2MxN0xpNGZxakp3?= =?utf-8?B?NFBXRElXRzZiUUZ6MmExaU9VaHhONm5mWUY4c3VJaUdNOWZDcVdzSWcwTHJP?= =?utf-8?B?NTFqcXFFU3VjbTdaRHVTMjRWR3FHU3BXc2VWNS9hTVpJUzVUdXZzMXNhOUlP?= =?utf-8?B?eEVqSWgwRTBkTDAxM2pJaTFXaFR0QjYyUXRDWHhoSlBBRWUvUUt2VStLajcz?= =?utf-8?B?VC9GWnBMT2RXMGQ1WWNvd2hHNVRUWVRSTjdOTEl5MWNwREVNbUV1czMyVlQy?= =?utf-8?B?ckRUY0JiejNqUDZDTzNCV2pHVlBYbzMvYXJZOE1wQnZpR0Y3Q2diTUlzZG14?= =?utf-8?B?TjFLTE9vd3pYM3ZabC9RQzdSZnZJSzNtVHptajcyQklQYW5ZNGRyYkduQTVP?= =?utf-8?B?cjdKVEpKZG5XK0VmQ1JvUmcyWWxlcmh1aTBSczVreTc0SXpqR2lmUHNieEtR?= =?utf-8?B?M2J1ampEL2wvOXcvc3pFMlJVSmxhMDdlV2cyYXdsMW9pM0hZTXZXZk1Wd010?= =?utf-8?B?ZDlsTG93cWtOWUJXRjMreXM2K2swRTJHS3V0NTBFVVhyY0lmSmg2SzI5TDJs?= =?utf-8?B?V3FqU0U2V1hFeHBHNnRSMzFncFVFMHlVM2E2Q3k5Z2pLSHprZlJ1eGxmZW1Z?= =?utf-8?B?R1N6TUxTcDY1U1pHWnMvZ29jSm8wQzRnNVBkNE5kUGpITXptT2I5djNTSWJC?= =?utf-8?Q?mZniD41zgodyg3kOW+XN2qMkM=3D?= X-Microsoft-Exchange-Diagnostics: 1; VI1PR07MB0911; 5:Y9+safvo2Wb6yRcvmfuEh8i80tVC9DJippLtOETmzsXmk9MZVBKxvXu9TGH9OechoReR1vRWqRAdtCqAaUprYfNk8Tx4mxJlCNiKHPEYQaBEhM+vgDrG3kb6+oEBftqHjPaZfcbsFkJz7C0l5pWW6Q==; 24:S9QC2UZq/yY6F8BVaspwB7y46fzQYqIBSzjXe2eFDsRtaT0lu42k9KrP5rCNxv41iRW83IgggjfY5mVmEd0+loss1F40gYoJcfHkazUjKZA= SpamDiagnosticOutput: 1:23 SpamDiagnosticMetadata: NSPM X-OriginatorOrg: nextfour.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Feb 2016 07:06:29.3160 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR07MB0911 Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Spam-Status: No, score=-7.2 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,RP_MATCHES_RCVD,T_DKIM_INVALID,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Mika Penttilä Multitouch protocol B support. v2: - use gpio descriptor api - probe cleanups - error handling cleanups Cc: Tammy Tseng Cc: Yuger Yu Signed-off-by: Mika Penttilä --- drivers/input/touchscreen/Kconfig | 11 + drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/sis_i2c.c | 537 ++++++++++++++++++++++++++++++++++++ 3 files changed, 549 insertions(+) create mode 100644 drivers/input/touchscreen/sis_i2c.c diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 3370a1a..577ef0b 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -1133,5 +1133,16 @@ config TOUCHSCREEN_ROHM_BU21023 To compile this driver as a module, choose M here: the module will be called bu21023_ts. +config TOUCHSCREEN_SIS_I2C + tristate "SiS 9200 family I2C touchscreen driver" + depends on I2C + depends on GPIOLIB + help + This enables support for SiS 9200 family over I2C based touchscreens. + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called sis_i2c. endif diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index fa6bc56..03b065e 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -61,6 +61,7 @@ obj-$(CONFIG_TOUCHSCREEN_PCAP) += pcap_ts.o obj-$(CONFIG_TOUCHSCREEN_PENMOUNT) += penmount.o obj-$(CONFIG_TOUCHSCREEN_PIXCIR) += pixcir_i2c_ts.o obj-$(CONFIG_TOUCHSCREEN_S3C2410) += s3c2410_ts.o +obj-$(CONFIG_TOUCHSCREEN_SIS_I2C) += sis_i2c.o obj-$(CONFIG_TOUCHSCREEN_ST1232) += st1232.o obj-$(CONFIG_TOUCHSCREEN_STMPE) += stmpe-ts.o obj-$(CONFIG_TOUCHSCREEN_SUN4I) += sun4i-ts.o diff --git a/drivers/input/touchscreen/sis_i2c.c b/drivers/input/touchscreen/sis_i2c.c new file mode 100644 index 0000000..67ed7d1 --- /dev/null +++ b/drivers/input/touchscreen/sis_i2c.c @@ -0,0 +1,537 @@ +/* drivers/input/touchscreen/sis_i2c.c + * - I2C Touch panel driver for SiS 9200 family + * + * Copyright (C) 2011 SiS, Inc. + * Copyright (C) 2015 Nextfour Group + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * 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. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define SIS_I2C_NAME "sis_i2c_ts" +#define MAX_FINGERS 10 + +#define SIS_MAX_X 4095 +#define SIS_MAX_Y 4095 + +#define ONE_BYTE 1 +#define FIVE_BYTE 5 +#define EIGHT_BYTE 8 +#define SIXTEEN_BYTE 16 +#define PACKET_BUFFER_SIZE 128 + +#define SIS_CMD_NORMAL 0x0 +#define SIS_CMD_SOFTRESET 0x82 +#define SIS_CMD_RECALIBRATE 0x87 +#define SIS_CMD_POWERMODE 0x90 +#define MSK_TOUCHNUM 0x0f +#define MSK_HAS_CRC 0x10 +#define MSK_DATAFMT 0xe0 +#define MSK_PSTATE 0x0f +#define MSK_PID 0xf0 +#define RES_FMT 0x00 +#define FIX_FMT 0x40 + +/* for new i2c format */ +#define TOUCHDOWN 0x3 +#define TOUCHUP 0x0 +#define MAX_BYTE 64 +#define PRESSURE_MAX 255 + +/* Resolution diagonal */ +#define AREA_LENGTH_LONGER 5792 +/*((SIS_MAX_X^2) + (SIS_MAX_Y^2))^0.5*/ +#define AREA_LENGTH_SHORT 5792 +#define AREA_UNIT (5792/32) + +#define FORMAT_MODE 1 + +#define MSK_NOBTN 0 +#define MSK_COMP 1 +#define MSK_BACK 2 +#define MSK_MENU 4 +#define MSK_HOME 8 + +#define P_BYTECOUNT 0 +#define ALL_IN_ONE_PACKAGE 0x10 +#define IS_TOUCH(x) (x & 0x1) +#define IS_HIDI2C(x) ((x & 0xF) == 0x06) +#define IS_AREA(x) ((x >> 4) & 0x1) +#define IS_PRESSURE(x) ((x >> 5) & 0x1) +#define IS_SCANTIME(x) ((x >> 6) & 0x1) + +#define NORMAL_LEN_PER_POINT 6 +#define AREA_LEN_PER_POINT 2 +#define PRESSURE_LEN_PER_POINT 1 + +#define TOUCH_FORMAT 0x1 +#define BUTTON_FORMAT 0x4 +#define HIDI2C_FORMAT 0x6 +#define P_REPORT_ID 2 +#define BUTTON_STATE 3 +#define BUTTON_KEY_COUNT 16 +#define BYTE_BYTECOUNT 2 +#define BYTE_COUNT 1 +#define BYTE_REPORTID 1 +#define BYTE_CRC_HIDI2C 0 +#define BYTE_CRC_I2C 2 +#define BYTE_SCANTIME 2 +#define NO_TOUCH_BYTECOUNT 0x3 + +/* CMD Define */ +#define BUF_ACK_PLACE_L 4 +#define BUF_ACK_PLACE_H 5 +#define BUF_ACK_L 0xEF +#define BUF_ACK_H 0xBE +#define BUF_NACK_L 0xAD +#define BUF_NACK_H 0xDE +#define BUF_CRC_PLACE 7 + +/* SiS i2c error code */ +#define SIS_ERR -1 +#define SIS_ERR_ACCESS_USER_MEM -11 /* Access user memory fail */ +#define SIS_ERR_ALLOCATE_KERNEL_MEM -12 /* Allocate memory fail */ +#define SIS_ERR_CLIENT -13 /* Client not created */ +#define SIS_ERR_COPY_FROM_USER -14 /* Copy data from user fail */ +#define SIS_ERR_COPY_FROM_KERNEL -19 /* Copy data from kernel fail */ +#define SIS_ERR_TRANSMIT_I2C -21 /* Transmit error in I2C */ + +struct _touchpoint { + int id; + unsigned short x, y; + uint16_t pressure; + uint16_t width; + uint16_t height; +}; + +struct sistp_driver_data { + int id; + int fingers; + uint8_t pre_keybit_state; + struct _touchpoint pt[MAX_FINGERS]; +}; + +struct sis_ts_data { + struct gpio_desc *irq_gpiod; + struct gpio_desc *reset_gpiod; + struct i2c_client *client; + struct input_dev *input_dev; +struct sistp_driver_data tpinfo; +}; + +static void sis_tpinfo_clear(struct sistp_driver_data *tpinfo, int max); + +static int sis_cul_unit(uint8_t report_id) +{ + int ret = NORMAL_LEN_PER_POINT; + + if (report_id != ALL_IN_ONE_PACKAGE) { + + if (IS_AREA(report_id) /*&& IS_TOUCH(report_id)*/) + ret += AREA_LEN_PER_POINT; + + if (IS_PRESSURE(report_id)) + ret += PRESSURE_LEN_PER_POINT; + } + + return ret; +} + +static int sis_readpacket(struct i2c_client *client, uint8_t cmd, uint8_t *buf) +{ + uint8_t tmpbuf[MAX_BYTE] = {0}; + int ret = SIS_ERR; + int touchnum = 0; + int p_count = 0; + int touch_format_id = 0; + int location = 0; + bool read_first = true; + +/* + * I2C touch report format + * + * buf[0] = Low 8 bits of byte count value + * buf[1] = High 8 bits of byte counte value + * buf[2] = Report ID + * buf[touch num * 6 + 2 ] = Touch information + * 1 touch point has 6 bytes, it could be none if no touch + * buf[touch num * 6 + 3] = Touch numbers + * + * One touch point information include 6 bytes, the order is + * + * 1. status = touch down or touch up + * 2. id = finger id + * 3. x axis low 8 bits + * 4. x axis high 8 bits + * 5. y axis low 8 bits + * 6. y axis high 8 bits + */ + do { + if (location >= PACKET_BUFFER_SIZE) { + dev_err(&client->dev, "sis_readpacket: Buf Overflow\n"); + return SIS_ERR; + } + + ret = i2c_master_recv(client, tmpbuf, MAX_BYTE); + + if (ret <= 0) { + return touchnum; + } else if (tmpbuf[P_BYTECOUNT] > MAX_BYTE) { + dev_err(&client->dev, "sis_readpacket: invalid bytecout\n"); + return SIS_ERR; + } + + if (tmpbuf[P_BYTECOUNT] < 10) + return touchnum; + + if (read_first) + if (tmpbuf[P_BYTECOUNT] == 0) + return 0; /* touchnum is 0 */ + + touch_format_id = tmpbuf[P_REPORT_ID] & 0xf; + + if ((touch_format_id != TOUCH_FORMAT) + && (touch_format_id != HIDI2C_FORMAT) + && (tmpbuf[P_REPORT_ID] != ALL_IN_ONE_PACKAGE)) { + dev_err(&client->dev, "sis_readpacket: invalid reportid\n"); + return SIS_ERR; + } + + p_count = (int) tmpbuf[P_BYTECOUNT] - 1; /* start from 0 */ + if (tmpbuf[P_REPORT_ID] != ALL_IN_ONE_PACKAGE) { + if (IS_TOUCH(tmpbuf[P_REPORT_ID])) { + p_count -= BYTE_CRC_I2C; /* delete 2 byte crc */ + } else if (IS_HIDI2C(tmpbuf[P_REPORT_ID])) { + p_count -= BYTE_CRC_HIDI2C; + } else { + dev_err(&client->dev, "sis_readpacket: delete crc error\n"); + return SIS_ERR; + } + if (IS_SCANTIME(tmpbuf[P_REPORT_ID])) + p_count -= BYTE_SCANTIME; + } + + if (read_first) + touchnum = tmpbuf[p_count]; + else { + if (tmpbuf[p_count] != 0) { + dev_err(&client->dev, "sis_readpacket: nonzero point count in tail packet\n"); + return SIS_ERR; + } + } + + if ((touch_format_id != HIDI2C_FORMAT) && + (tmpbuf[P_BYTECOUNT] > 3)) { + int crc_end = p_count + + (IS_SCANTIME(tmpbuf[P_REPORT_ID]) * 2); + u16 buf_crc = + crc_itu_t(0, tmpbuf + 2, crc_end - 1); + int l_package_crc = + (IS_SCANTIME(tmpbuf[P_REPORT_ID]) * 2) + + p_count + 1; + u16 package_crc = + get_unaligned_le16(&tmpbuf[l_package_crc]); + if (buf_crc != package_crc) { + dev_err(&client->dev, "sis_readpacket: CRC Error\n"); + return SIS_ERR; + } + } + + memcpy(&buf[location], &tmpbuf[0], 64); + /* Buf_Data [0~63] [64~128] */ + location += MAX_BYTE; + read_first = false; + } while (tmpbuf[P_REPORT_ID] != ALL_IN_ONE_PACKAGE && + tmpbuf[p_count] > 5); + + return touchnum; +} + +static irqreturn_t sis_ts_irq_handler(int irq, void *dev_id) +{ + struct sis_ts_data *ts = dev_id; + struct sistp_driver_data *tpinfo = &ts->tpinfo; + + int ret = SIS_ERR; + int point_unit; + uint8_t buf[PACKET_BUFFER_SIZE] = {0}; + uint8_t i = 0, fingers = 0; + uint8_t px = 0, py = 0, pstatus = 0; + uint8_t p_area = 0; + uint8_t p_preasure = 0; + +redo: + /* I2C or SMBUS block data read */ + ret = sis_readpacket(ts->client, SIS_CMD_NORMAL, buf); + + if (ret < 0) + goto recheck_irq; + + else if (ret == 0) { + fingers = 0; + sis_tpinfo_clear(tpinfo, MAX_FINGERS); + goto label_send_report; + /*need to report input_mt_sync()*/ + } + sis_tpinfo_clear(tpinfo, MAX_FINGERS); + + point_unit = sis_cul_unit(buf[P_REPORT_ID]); + fingers = ret; + + tpinfo->fingers = fingers = (fingers > MAX_FINGERS ? 0 : fingers); + + for (i = 0; i < fingers; i++) { + if ((buf[P_REPORT_ID] != ALL_IN_ONE_PACKAGE) && (i >= 5)) { + pstatus = BYTE_BYTECOUNT + BYTE_REPORTID + + ((i - 5) * point_unit); + pstatus += 64; + } else { + pstatus = BYTE_BYTECOUNT + BYTE_REPORTID + + (i * point_unit); + } + /* X and Y coordinate locations */ + px = pstatus + 2; + py = px + 2; + + if ((buf[pstatus]) == TOUCHUP) { + tpinfo->pt[i].width = 0; + tpinfo->pt[i].height = 0; + tpinfo->pt[i].pressure = 0; + } else if (buf[P_REPORT_ID] == ALL_IN_ONE_PACKAGE + && (buf[pstatus]) == TOUCHDOWN) { + tpinfo->pt[i].width = 1; + tpinfo->pt[i].height = 1; + tpinfo->pt[i].pressure = 1; + } else if ((buf[pstatus]) == TOUCHDOWN) { + p_area = py + 2; + p_preasure = py + 2 + (IS_AREA(buf[P_REPORT_ID]) * 2); + + if (IS_AREA(buf[P_REPORT_ID])) { + tpinfo->pt[i].width = buf[p_area]; + tpinfo->pt[i].height = buf[p_area + 1]; + } else { + tpinfo->pt[i].width = 1; + tpinfo->pt[i].height = 1; + } + + if (IS_PRESSURE(buf[P_REPORT_ID])) + tpinfo->pt[i].pressure = (buf[p_preasure]); + else + tpinfo->pt[i].pressure = 1; + } else { + dev_err(&ts->client->dev, "Touch status error\n"); + goto recheck_irq; + } + tpinfo->pt[i].id = (buf[pstatus + 1]); + tpinfo->pt[i].x = le16_to_cpu(get_unaligned_le16(&buf[px])); + tpinfo->pt[i].y = le16_to_cpu(get_unaligned_le16(&buf[py])); + } + +label_send_report: + + for (i = 0; i < tpinfo->fingers; i++) { + + int slot = input_mt_get_slot_by_key( + ts->input_dev, tpinfo->pt[i].id); + + if (slot < 0) + continue; + + input_mt_slot(ts->input_dev, slot); + input_mt_report_slot_state(ts->input_dev, + MT_TOOL_FINGER, tpinfo->pt[i].pressure); + + if (tpinfo->pt[i].pressure) { + + tpinfo->pt[i].width *= AREA_UNIT; + input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, + tpinfo->pt[i].width); + tpinfo->pt[i].height *= AREA_UNIT; + input_report_abs(ts->input_dev, ABS_MT_TOUCH_MINOR, + tpinfo->pt[i].height); + input_report_abs(ts->input_dev, ABS_MT_PRESSURE, + tpinfo->pt[i].pressure); + input_report_abs(ts->input_dev, ABS_MT_POSITION_X, + tpinfo->pt[i].x); + input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, + tpinfo->pt[i].y); + + } + } + + input_mt_sync_frame(ts->input_dev); + input_sync(ts->input_dev); + +recheck_irq: + + ret = gpiod_get_value(ts->irq_gpiod); + /* + * If interrupt pin is still LOW, + * read data until interrupt pin is released. + * + */ + if (!ret) + goto redo; + + return IRQ_HANDLED; +} + +static void sis_tpinfo_clear(struct sistp_driver_data *tpinfo, int max) +{ + int i = 0; + + for (i = 0; i < max; i++) { + tpinfo->pt[i].id = -1; + tpinfo->pt[i].x = 0; + tpinfo->pt[i].y = 0; + tpinfo->pt[i].pressure = 0; + tpinfo->pt[i].width = 0; + } + tpinfo->id = 0x0; + tpinfo->fingers = 0; +} + +static int sis_ts_configure(struct i2c_client *client, struct sis_ts_data *ts) +{ + struct device_node *np = client->dev.of_node; + + if (!np) + return -ENODEV; + + ts->irq_gpiod = devm_gpiod_get(&client->dev, "irq", GPIOD_IN); + ts->reset_gpiod = devm_gpiod_get(&client->dev, "reset", GPIOD_OUT_HIGH); + + if (IS_ERR(ts->irq_gpiod) || IS_ERR(ts->reset_gpiod)) + return -ENODEV; + + /* Get out of reset */ + msleep(1); + gpiod_set_value(ts->reset_gpiod, 0); + msleep(1); + gpiod_set_value(ts->reset_gpiod, 1); + msleep(100); + return 0; + +} + +static int sis_ts_probe( + struct i2c_client *client, const struct i2c_device_id *id) +{ + int ret = 0; + struct sis_ts_data *ts = NULL; + + ts = devm_kzalloc(&client->dev, sizeof(struct sis_ts_data), GFP_KERNEL); + if (ts == NULL) + return -ENOMEM; + + if (sis_ts_configure(client, ts)) + return -ENODEV; + + ts->client = client; + i2c_set_clientdata(client, ts); + + ts->input_dev = devm_input_allocate_device(&client->dev); + if (!ts->input_dev) { + dev_err(&client->dev, "sis_ts_probe: Failed to allocate input device\n"); + return -ENOMEM; + } + + ts->input_dev->name = "sis_touch"; + ts->input_dev->id.bustype = BUS_I2C; + + set_bit(EV_ABS, ts->input_dev->evbit); + set_bit(EV_KEY, ts->input_dev->evbit); + set_bit(BTN_TOUCH, ts->input_dev->keybit); + + set_bit(ABS_MT_POSITION_X, ts->input_dev->absbit); + set_bit(ABS_MT_POSITION_Y, ts->input_dev->absbit); + + set_bit(ABS_MT_PRESSURE, ts->input_dev->absbit); + set_bit(ABS_MT_TOUCH_MAJOR, ts->input_dev->absbit); + set_bit(ABS_MT_TOUCH_MINOR, ts->input_dev->absbit); + input_set_abs_params(ts->input_dev, ABS_MT_PRESSURE, + 0, PRESSURE_MAX, 0, 0); + input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, + 0, AREA_LENGTH_LONGER, 0, 0); + input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MINOR, + 0, AREA_LENGTH_SHORT, 0, 0); + input_set_abs_params(ts->input_dev, ABS_MT_POSITION_X, + 0, SIS_MAX_X, 0, 0); + input_set_abs_params(ts->input_dev, ABS_MT_POSITION_Y, + 0, SIS_MAX_Y, 0, 0); + + input_mt_init_slots(ts->input_dev, MAX_FINGERS, + INPUT_MT_DROP_UNUSED | INPUT_MT_DIRECT); + + ret = input_register_device(ts->input_dev); + if (ret) { + dev_err(&client->dev, + "Unable to register %s input device\n", + ts->input_dev->name); + return ret; + } + + ret = devm_request_threaded_irq(&client->dev, client->irq, NULL, + sis_ts_irq_handler, + IRQF_TRIGGER_FALLING | IRQF_ONESHOT, + client->name, ts); + + if (ret) { + dev_err(&client->dev, "request irq failed\n"); + return ret; + } + + dev_info(&client->dev, "sis_ts_probe: Started touchscreen %s\n", + ts->input_dev->name); + return 0; + +} + +static const struct i2c_device_id sis_ts_id[] = { + { SIS_I2C_NAME, 0 }, + { } +}; + +MODULE_DEVICE_TABLE(i2c, sis_ts_id); + +static const struct of_device_id sis_ts_dt_ids[] = { + { .compatible = "sis,9200_ts" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, sis_ts_dt_ids); + +static struct i2c_driver sis_ts_driver = { + .probe = sis_ts_probe, + .id_table = sis_ts_id, + .driver = { + .name = SIS_I2C_NAME, + .of_match_table = sis_ts_dt_ids, + }, +}; + +module_i2c_driver(sis_ts_driver); +MODULE_DESCRIPTION("SiS 9200 Family Touchscreen Driver"); +MODULE_LICENSE("GPL v2");