From patchwork Wed Feb 17 06:41:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?Sm9lIEh1bmcgKOa0qumKmOmZvSk=?= X-Patchwork-Id: 12091009 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.9 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, UNWANTED_LANGUAGE_BODY,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1780EC433DB for ; Wed, 17 Feb 2021 06:49:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A37E964E4A for ; Wed, 17 Feb 2021 06:49:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230179AbhBQGt0 (ORCPT ); Wed, 17 Feb 2021 01:49:26 -0500 Received: from mail.ilitek.com.tw ([60.248.80.92]:58566 "EHLO cello.ilitek.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S229683AbhBQGtX (ORCPT ); Wed, 17 Feb 2021 01:49:23 -0500 X-UUID: 950a3f5a7cbc475195b5de2de3e585c5-20210217 X-UUID: 950a3f5a7cbc475195b5de2de3e585c5-20210217 Received: from ex1.ili.com.tw [(192.168.1.131)] by cello.ilitek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.12 Build 0701 with TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256 128/128) with ESMTP id 1570440455; Wed, 17 Feb 2021 14:42:01 +0800 Received: from EX1.ili.com.tw (192.168.1.131) by EX1.ili.com.tw (192.168.1.131) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Wed, 17 Feb 2021 14:42:00 +0800 Received: from joehung-Ilitek.ili.com.tw (192.168.18.73) by EX1.ili.com.tw (192.168.1.133) with Microsoft SMTP Server id 15.1.2176.2 via Frontend Transport; Wed, 17 Feb 2021 14:41:59 +0800 From: Joe Hung To: , , CC: , , Subject: [PATCH v2 2/2] input: touchscreen: Add support for ILITEK Lego Series Date: Wed, 17 Feb 2021 14:41:55 +0800 Message-ID: <20210217064155.126173-2-joe_hung@ilitek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210217064155.126173-1-joe_hung@ilitek.com> References: <20210217064155.126173-1-joe_hung@ilitek.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Add support for ILITEK Lego series of touch devices. Lego series includes ILITEK 213X/2316/232X/252X. Designed in compatible way for ILITEK 23XX/251X ICs. Tested and passed with evaluation board with ILI2520 IC. Signed-off-by: Joe Hung --- Changes in v2: - Remove irq-gpio and related flow drivers/input/touchscreen/Kconfig | 12 + drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/ilitek_ts_i2c.c | 1010 +++++++++++++++++++++ 3 files changed, 1023 insertions(+) create mode 100644 drivers/input/touchscreen/ilitek_ts_i2c.c -- 2.25.1 diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index f012fe746df0..9dea7fd0d94f 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -1334,4 +1334,16 @@ config TOUCHSCREEN_ZINITIX To compile this driver as a module, choose M here: the module will be called zinitix. +config TOUCHSCREEN_ILITEK + tristate "Ilitek I2C 23XX/25XX/Lego Series Touch ICs" + depends on I2C + help + Say Y here if you have touchscreen with ILITEK touch IC, + it supports 23XX/25XX/other Lego series. + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called ilitek_ts_i2c. + endif diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index 6233541e9173..6749bdc42f41 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -112,3 +112,4 @@ obj-$(CONFIG_TOUCHSCREEN_ROHM_BU21023) += rohm_bu21023.o obj-$(CONFIG_TOUCHSCREEN_RASPBERRYPI_FW) += raspberrypi-ts.o obj-$(CONFIG_TOUCHSCREEN_IQS5XX) += iqs5xx.o obj-$(CONFIG_TOUCHSCREEN_ZINITIX) += zinitix.o +obj-$(CONFIG_TOUCHSCREEN_ILITEK) += ilitek_ts_i2c.o diff --git a/drivers/input/touchscreen/ilitek_ts_i2c.c b/drivers/input/touchscreen/ilitek_ts_i2c.c new file mode 100644 index 000000000000..382d32395162 --- /dev/null +++ b/drivers/input/touchscreen/ilitek_ts_i2c.c @@ -0,0 +1,1010 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * ILITEK Touch IC driver for 23XX, 25XX and Lego series + * + * Copyright (C) 2011 ILI Technology Corporation. + * Copyright (C) 2020 Luca Hsu + * Copyright (C) 2021 Joe Hung + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define ILITEK_TS_NAME "ilitek_ts" +#define BL_V1_8 (0x10800) +#define BL_V1_7 (0x10700) +#define BL_V1_6 (0x10600) + +#define ILITEK_TP_CMD_GET_TP_RES (0x20) +#define ILITEK_TP_CMD_GET_SCRN_RES (0x21) +#define ILITEK_TP_CMD_GET_KEY_INFO (0x22) +#define ILITEK_TP_CMD_GET_FW_VER (0x40) +#define ILITEK_TP_CMD_GET_PRL_VER (0x42) +#define ILITEK_TP_CMD_GET_MCU_VER (0x61) +#define ILITEK_TP_CMD_GET_IC_MODE (0xC0) + +#define REPORT_ADDRESS_COUNT (61) +#define ILITEK_SUPPORT_MAX_POINT (40) +#define ILITEK_SUPPORT_MAX_KEY_CNT (50) + +#define CEIL(n, d) (((n) % (d)) ? ((n) / (d) + 1) : ((n) / (d))) + +struct ilitek_protocol_info { + s32 ver; + u8 ver_major; + u8 ver_mid; + u8 ver_minor; +}; + +struct ilitek_key_info { + s32 id; + s32 x; + s32 y; + s32 status; +}; + +struct ilitek_touch_info { + u16 id; + u16 x; + u16 y; + u16 p; + u16 w; + u16 h; + u16 status; +}; + +struct ilitek_ts_data { + struct i2c_client *client; + struct gpio_desc *reset_gpio; + struct input_dev *input_dev; + + struct mutex ilitek_mutex; + spinlock_t irq_lock; + bool irq_status; + int (*process_and_report)(struct ilitek_ts_data *ilitek_data); + + struct PROTOCOL_MAP *ptl_cb_func; + struct ilitek_protocol_info ptl; + + + struct ilitek_key_info keyinfo[ILITEK_SUPPORT_MAX_KEY_CNT]; + struct ilitek_touch_info tpinfo[ILITEK_SUPPORT_MAX_POINT]; + + bool is_touched; + bool touch_key_hold_press; + + bool ilitek_repeat_start; + + char product_id[30]; + u8 mcu_ver[2]; + u8 ic_mode; + u8 firmware_ver[8]; + + s32 reset_time; + s32 tp_max_x; + s32 tp_max_y; + s32 screen_max_x; + s32 screen_max_y; + s32 screen_min_x; + s32 screen_min_y; + s32 max_tp; + s32 x_ch; + s32 y_ch; + s32 slave_count; + s32 format; + s32 keycount; + s32 key_xlen; + s32 key_ylen; +}; + +enum ilitek_cmds_v6 { + GET_PTL_VER = 0, + GET_FW_VER, + GET_SCRN_RES, + GET_TP_RES, + GET_IC_MODE, + GET_MCU_VER, + GET_KEY_INFO, + + MAX_CMD_CNT /* ALWAYS keep at the end */ +}; + +typedef int protocol_func(struct ilitek_ts_data *ilitek_data, + u16 cmd, uint8_t *inbuf, uint8_t *outbuf); + +struct PROTOCOL_MAP { + u16 cmd; + const char *name; + protocol_func *func; +}; + +/* ILITEK I2C R/W APIs */ +static int ilitek_i2c_transfer(struct i2c_client *client, + struct i2c_msg *msgs, int cnt) +{ + int ret = 0, retry = 4; + + while (retry--) { + ret = i2c_transfer(client->adapter, msgs, cnt); + if (ret >= 0) + break; + mdelay(20); + } + + return ret; +} + +static int ilitek_i2c_write_and_read(struct ilitek_ts_data *ilitek_data, + u8 *cmd, int write_len, int delay, + u8 *data, int read_len) +{ + int ret = 0; + struct i2c_client *client = ilitek_data->client; + struct i2c_msg msgs[2] = { + {.addr = client->addr, .flags = 0, + .len = write_len, .buf = cmd,}, + {.addr = client->addr, .flags = I2C_M_RD, + .len = read_len, .buf = data,} + }; + + if (ilitek_data->ilitek_repeat_start && delay == 0 && + write_len > 0 && read_len > 0) { + ret = ilitek_i2c_transfer(client, msgs, 2); + if (ret < 0) + return ret; + } else { + if (write_len > 0) { + ret = ilitek_i2c_transfer(client, msgs, 1); + if (ret < 0) + return ret; + } + if (delay > 0) + mdelay(delay); + if (read_len > 0) { + ret = ilitek_i2c_transfer(client, msgs + 1, 1); + if (ret < 0) + return ret; + } + } + + return 0; +} + +static void ilitek_irq_enable(struct ilitek_ts_data *ilitek_data) +{ + unsigned long irqflag = 0; + + spin_lock_irqsave(&ilitek_data->irq_lock, irqflag); + if (!ilitek_data->irq_status) { + enable_irq(ilitek_data->client->irq); + ilitek_data->irq_status = true; + } + spin_unlock_irqrestore(&ilitek_data->irq_lock, irqflag); +} + +static void ilitek_irq_disable(struct ilitek_ts_data *ilitek_data) +{ + unsigned long irqflag = 0; + + spin_lock_irqsave(&ilitek_data->irq_lock, irqflag); + if (ilitek_data->irq_status) { + disable_irq_nosync(ilitek_data->client->irq); + ilitek_data->irq_status = false; + } + spin_unlock_irqrestore(&ilitek_data->irq_lock, irqflag); +} + +/* ILITEK ISR APIs */ +static void ilitek_key_down(struct ilitek_ts_data *ilitek_data, + int x, int y) +{ + int j = 0; + int x_min; + int x_max; + int y_min; + int y_max; + + for (j = 0; j < ilitek_data->keycount; j++) { + x_min = ilitek_data->keyinfo[j].x; + x_max = ilitek_data->keyinfo[j].x + ilitek_data->key_xlen; + y_min = ilitek_data->keyinfo[j].y; + y_max = ilitek_data->keyinfo[j].y + ilitek_data->key_ylen; + + if (x >= x_min && x <= x_max && y >= y_min && y <= y_max) { + input_report_key(ilitek_data->input_dev, + ilitek_data->keyinfo[j].id, 1); + + ilitek_data->keyinfo[j].status = 1; + ilitek_data->touch_key_hold_press = true; + ilitek_data->is_touched = true; + break; + } + } +} + +static int ilitek_key_release(struct ilitek_ts_data *ilitek_data, + int x, int y, bool check_point) +{ + int j = 0; + int x_min; + int x_max; + int y_min; + int y_max; + + for (j = 0; j < ilitek_data->keycount; j++) { + x_min = ilitek_data->keyinfo[j].x; + x_max = ilitek_data->keyinfo[j].x + ilitek_data->key_xlen; + y_min = ilitek_data->keyinfo[j].y; + y_max = ilitek_data->keyinfo[j].y + ilitek_data->key_ylen; + + if (ilitek_data->keyinfo[j].status == 1) { + if (!check_point || + (x < x_min || x > x_max || + y < y_min || y > y_max)) { + input_report_key(ilitek_data->input_dev, + ilitek_data->keyinfo[j].id, 0); + ilitek_data->keyinfo[j].status = 0; + ilitek_data->touch_key_hold_press = false; + } + } + } + return 0; +} + +static void ilitek_touch_down(struct ilitek_ts_data *ilitek_data, + int id, int x, int y, int p, int h, int w) +{ + struct input_dev *input = ilitek_data->input_dev; + + input_report_key(input, BTN_TOUCH, 1); + + input_mt_slot(input, id); + input_mt_report_slot_state(input, MT_TOOL_FINGER, true); + + input_event(input, EV_ABS, ABS_MT_POSITION_X, x); + input_event(input, EV_ABS, ABS_MT_POSITION_Y, y); + + input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, h); + input_event(input, EV_ABS, ABS_MT_WIDTH_MAJOR, w); + + ilitek_data->tpinfo[id].status = 1; + ilitek_data->tpinfo[id].id = id; + ilitek_data->tpinfo[id].x = x; + ilitek_data->tpinfo[id].y = y; + ilitek_data->tpinfo[id].p = p; + ilitek_data->tpinfo[id].h = h; + ilitek_data->tpinfo[id].w = w; + ilitek_data->is_touched = true; +} + +static void ilitek_touch_release(struct ilitek_ts_data *ilitek_data, int id) +{ + struct input_dev *input = ilitek_data->input_dev; + + if (ilitek_data->tpinfo[id].status == 1) { + input_mt_slot(input, id); + input_mt_report_slot_state(input, MT_TOOL_FINGER, false); + ilitek_data->tpinfo[id].status = 0; + } +} + +static void ilitek_touch_release_all(struct ilitek_ts_data *ilitek_data) +{ + struct input_dev *input = ilitek_data->input_dev; + int i = 0; + + for (i = 0; i < ilitek_data->max_tp; i++) + ilitek_touch_release(ilitek_data, i); + input_report_key(input, BTN_TOUCH, 0); + input_sync(input); + + ilitek_data->is_touched = false; +} + +static int ilitek_process_and_report_v6(struct ilitek_ts_data *ilitek_data) +{ + int ret = 0; + u8 buf[512] = {0}; + int packet_len = 5; + int packet_max_point = 10; + int report_max_point = 6; + int release_point = 0; + int i = 0, count = 0; + struct input_dev *input = ilitek_data->input_dev; + struct device *dev = &ilitek_data->client->dev; + u16 x, y, p = 10, w = 10, h = 10, status, id; + + ret = ilitek_i2c_write_and_read(ilitek_data, NULL, 0, 0, buf, 64); + if (ret < 0) { + dev_err(dev, "get touch info failed, err:%d\n", ret); + goto err_release_touch_and_key; + } + + report_max_point = buf[REPORT_ADDRESS_COUNT]; + if (report_max_point > ilitek_data->max_tp) { + dev_err(dev, "FW report max point:%d > panel info. max:%d\n", + report_max_point, ilitek_data->max_tp); + return -EINVAL; + } + + count = CEIL(report_max_point, packet_max_point); + for (i = 1; i < count; i++) { + ret = ilitek_i2c_write_and_read(ilitek_data, NULL, 0, 0, + buf + i * 64, 64); + if (ret < 0) { + dev_err(dev, "get touch info. err, count=%d\n", count); + goto err_release_touch_and_key; + } + } + + for (i = 0; i < report_max_point; i++) { + status = buf[i * packet_len + 1] & 0x40; + id = buf[i * packet_len + 1] & 0x3F; + + if (!status) { + release_point++; + ilitek_touch_release(ilitek_data, id); + continue; + } + + x = (buf[i * packet_len + 3] << 8) + buf[i * packet_len + 2]; + y = (buf[i * packet_len + 5] << 8) + buf[i * packet_len + 4]; + + if (!ilitek_data->is_touched) + ilitek_key_down(ilitek_data, x, y); + + if (!ilitek_data->touch_key_hold_press) { + if (x > ilitek_data->screen_max_x || + y > ilitek_data->screen_max_y || + x < ilitek_data->screen_min_x || + y < ilitek_data->screen_min_y) + continue; + + ilitek_touch_down(ilitek_data, id, x, y, p, h, w); + } else { + ilitek_key_release(ilitek_data, x, y, 1); + } + } + + if (release_point == report_max_point) { + ilitek_touch_release_all(ilitek_data); + ilitek_key_release(ilitek_data, 0, 0, 0); + ilitek_data->is_touched = false; + } + input_sync(input); + return 0; + +err_release_touch_and_key: + ilitek_touch_release_all(ilitek_data); + ilitek_key_release(ilitek_data, 0, 0, 0); + ilitek_data->is_touched = false; + input_sync(input); + return ret; +} + + +/* APIs of cmds for ILITEK Touch IC */ +static int api_protocol_set_cmd(struct ilitek_ts_data *ilitek_data, + u16 idx, u8 *inbuf, u8 *outbuf) +{ + u16 cmd; + int ret = 0; + + if (!ilitek_data || !ilitek_data->ptl_cb_func) + return -EINVAL; + + if (idx >= MAX_CMD_CNT) + return -EINVAL; + + cmd = ilitek_data->ptl_cb_func[idx].cmd; + ret = ilitek_data->ptl_cb_func[idx].func(ilitek_data, cmd, + inbuf, outbuf); + if (ret < 0) + return ret; + + return 0; +} + +static int api_protocol_get_ptl_ver(struct ilitek_ts_data *ilitek_data, + u16 cmd, u8 *inbuf, u8 *outbuf) +{ + int ret = 0; + u8 buf[64] = {0}; + + if (!ilitek_data) + return -EINVAL; + + buf[0] = cmd; + ret = ilitek_i2c_write_and_read(ilitek_data, buf, 1, 5, outbuf, 3); + if (ret < 0) + return ret; + + ilitek_data->ptl.ver = (outbuf[0] << 16) + (outbuf[1] << 8); + ilitek_data->ptl.ver_major = outbuf[0]; + ilitek_data->ptl.ver_mid = outbuf[1]; + ilitek_data->ptl.ver_minor = outbuf[2]; + + return ret; +} + +static int api_protocol_get_mcu_ver(struct ilitek_ts_data *ilitek_data, + u16 cmd, u8 *inbuf, u8 *outbuf) +{ + int ret = 0; + u8 buf[64] = {0}; + + if (!ilitek_data) + return -EINVAL; + + buf[0] = ILITEK_TP_CMD_GET_MCU_VER; + ret = ilitek_i2c_write_and_read(ilitek_data, buf, 1, 5, outbuf, 32); + if (ret < 0) + return ret; + + memcpy(ilitek_data->mcu_ver, outbuf, 2); + memset(ilitek_data->product_id, 0, sizeof(ilitek_data->product_id)); + memcpy(ilitek_data->product_id, outbuf+6, 26); + + return ret; +} + +static int api_protocol_get_fw_ver(struct ilitek_ts_data *ilitek_data, + u16 cmd, u8 *inbuf, u8 *outbuf) +{ + int ret = 0; + u8 buf[64] = {0}; + + if (!ilitek_data) + return -EINVAL; + + buf[0] = ILITEK_TP_CMD_GET_FW_VER; + ret = ilitek_i2c_write_and_read(ilitek_data, buf, 1, 5, outbuf, 8); + if (ret < 0) + return ret; + + memcpy(ilitek_data->firmware_ver, outbuf, 8); + + return ret; +} + +static int api_protocol_get_scrn_res(struct ilitek_ts_data *ilitek_data, + u16 cmd, u8 *inbuf, u8 *outbuf) +{ + int ret = 0; + u8 buf[64] = {0}; + + if (!ilitek_data) + return -EINVAL; + + buf[0] = ILITEK_TP_CMD_GET_SCRN_RES; + ret = ilitek_i2c_write_and_read(ilitek_data, buf, 1, 5, outbuf, 8); + if (ret < 0) + return ret; + + ilitek_data->screen_min_x = (outbuf[1] << 8) + outbuf[0]; + ilitek_data->screen_min_y = (outbuf[3] << 8) + outbuf[2]; + ilitek_data->screen_max_x = (outbuf[5] << 8) + outbuf[4]; + ilitek_data->screen_max_y = (outbuf[7] << 8) + outbuf[6]; + + return ret; +} + +static int api_protocol_get_key_info_v6(struct ilitek_ts_data *ilitek_data, + u16 cmd, u8 *inbuf, u8 *outbuf) +{ + int ret = 0, i = 0; + u8 buf[64] = {0}; + + if (!ilitek_data) + return -EINVAL; + + if (ilitek_data->keycount > ILITEK_SUPPORT_MAX_KEY_CNT) + return -EINVAL; + + buf[0] = ILITEK_TP_CMD_GET_KEY_INFO; + ret = ilitek_i2c_write_and_read(ilitek_data, buf, 1, 10, + outbuf, ilitek_data->keycount * 5 + 5); + if (ret < 0) + return ret; + + ilitek_data->key_xlen = (outbuf[2] << 8) + outbuf[1]; + ilitek_data->key_ylen = (outbuf[4] << 8) + outbuf[3]; + + for (i = 0; i < ilitek_data->keycount; i++) { + ilitek_data->keyinfo[i].id = outbuf[i * 5 + 5]; + ilitek_data->keyinfo[i].x = (outbuf[i * 5 + 7] << 8) + + outbuf[i * 5 + 6]; + ilitek_data->keyinfo[i].y = (outbuf[i * 5 + 9] << 8) + + outbuf[i * 5 + 8]; + ilitek_data->keyinfo[i].status = 0; + } + + return ret; +} + +static int api_protocol_get_tp_res_v6(struct ilitek_ts_data *ilitek_data, + u16 cmd, u8 *inbuf, u8 *outbuf) +{ + int ret = 0; + u8 buf[64] = {0}; + + if (!ilitek_data) + return -EINVAL; + + buf[0] = ILITEK_TP_CMD_GET_TP_RES; + ret = ilitek_i2c_write_and_read(ilitek_data, buf, 1, 5, outbuf, 15); + if (ret < 0) + return ret; + + ilitek_data->tp_max_x = (outbuf[1] << 8) + outbuf[0]; + ilitek_data->tp_max_y = (outbuf[3] << 8) + outbuf[2]; + ilitek_data->x_ch = (outbuf[5] << 8) + outbuf[4]; + ilitek_data->y_ch = (outbuf[7] << 8) + outbuf[6]; + ilitek_data->max_tp = outbuf[8]; + ilitek_data->keycount = outbuf[9]; + ilitek_data->slave_count = outbuf[10]; + ilitek_data->format = outbuf[12]; + + if (ilitek_data->keycount > ILITEK_SUPPORT_MAX_KEY_CNT) { + dev_err(&ilitek_data->client->dev, "Invalid KEY count:%d from FW\n", + ilitek_data->keycount); + return -EINVAL; + } + + if (ilitek_data->keycount > 0) { + ret = api_protocol_set_cmd(ilitek_data, GET_KEY_INFO, + NULL, outbuf); + if (ret < 0) + return ret; + } + + if (ilitek_data->max_tp > ILITEK_SUPPORT_MAX_POINT) { + dev_err(&ilitek_data->client->dev, "Invalid MAX_TP:%d from FW\n", + ilitek_data->max_tp); + return -EINVAL; + } + + return ret; +} + +static int api_protocol_get_ic_mode(struct ilitek_ts_data *ilitek_data, + u16 cmd, u8 *inbuf, u8 *outbuf) +{ + int ret = 0; + u8 buf[64] = {0}; + + if (!ilitek_data) + return -EINVAL; + + buf[0] = ILITEK_TP_CMD_GET_IC_MODE; + ret = ilitek_i2c_write_and_read(ilitek_data, buf, 1, 5, outbuf, 2); + if (ret < 0) + return ret; + + ilitek_data->ic_mode = outbuf[0]; + return ret; +} + +struct PROTOCOL_MAP ptl_func_map_v3[] = { + { /* V3 cmds */}, +}; + +struct PROTOCOL_MAP ptl_func_map_v6[] = { + [GET_PTL_VER] = {ILITEK_TP_CMD_GET_PRL_VER, "GET_PTL_VER", + api_protocol_get_ptl_ver}, + [GET_FW_VER] = {ILITEK_TP_CMD_GET_FW_VER, "GET_FW_VER", + api_protocol_get_fw_ver}, + [GET_SCRN_RES] = {ILITEK_TP_CMD_GET_SCRN_RES, "GET_SCRN_RES", + api_protocol_get_scrn_res}, + [GET_TP_RES] = {ILITEK_TP_CMD_GET_TP_RES, "GET_TP_RES", + api_protocol_get_tp_res_v6}, + [GET_IC_MODE] = {ILITEK_TP_CMD_GET_IC_MODE, "GET_IC_MODE", + api_protocol_get_ic_mode}, + [GET_MCU_VER] = {ILITEK_TP_CMD_GET_MCU_VER, "GET_MOD_NAME", + api_protocol_get_mcu_ver}, + [GET_KEY_INFO] = {ILITEK_TP_CMD_GET_KEY_INFO, "GET_KEY_INFO", + api_protocol_get_key_info_v6}, +}; + +/* Probe APIs */ +static int ilitek_request_gpio(struct device *dev, + struct ilitek_ts_data *ilitek_data) +{ + int ret = 0; + + if (!dev || !ilitek_data) + return -EINVAL; + + ilitek_data->reset_gpio = gpiod_get(dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR(ilitek_data->reset_gpio)) { + ret = PTR_ERR(ilitek_data->reset_gpio); + return ret; + } + + return 0; +} + +static void ilitek_reset(struct ilitek_ts_data *ilitek_data, + int delay, bool boot) +{ + bool init_stats = ilitek_data->irq_status; + + if (!boot) + ilitek_irq_disable(ilitek_data); + + if (ilitek_data->reset_gpio) { + gpiod_set_value(ilitek_data->reset_gpio, 1); + mdelay(10); + + gpiod_set_value(ilitek_data->reset_gpio, 0); + mdelay(10); + + gpiod_set_value(ilitek_data->reset_gpio, 1); + mdelay(delay); + } + + if (!boot && init_stats) + ilitek_irq_enable(ilitek_data); +} + +static int ilitek_protocol_init(struct ilitek_ts_data *ilitek_data) +{ + int ret = 0; + u8 outbuf[64] = {0}; + + if (!ilitek_data) + return -EINVAL; + + ilitek_data->ptl_cb_func = ptl_func_map_v6; + + ret = api_protocol_set_cmd(ilitek_data, GET_PTL_VER, NULL, outbuf); + if (ret < 0) + return ret; + + if (ilitek_data->ptl.ver_major == 0x3 || + ilitek_data->ptl.ver == BL_V1_6 || + ilitek_data->ptl.ver == BL_V1_7) { + ilitek_data->process_and_report = NULL; + ilitek_data->ptl_cb_func = NULL; + ilitek_data->reset_time = 200; + } else { + ilitek_data->process_and_report = ilitek_process_and_report_v6; + ilitek_data->ptl_cb_func = ptl_func_map_v6; + ilitek_data->reset_time = 600; + } + + return 0; +} + +static int ilitek_read_tp_info(struct ilitek_ts_data *ilitek_data, bool boot) +{ + u8 outbuf[256] = {0}; + + if (api_protocol_set_cmd(ilitek_data, GET_PTL_VER, NULL, outbuf) < 0) + return -EFAULT; + if (api_protocol_set_cmd(ilitek_data, GET_MCU_VER, NULL, outbuf) < 0) + return -EFAULT; + if (api_protocol_set_cmd(ilitek_data, GET_FW_VER, NULL, outbuf) < 0) + return -EFAULT; + if (boot && api_protocol_set_cmd(ilitek_data, GET_SCRN_RES, NULL, + outbuf) < 0) + return -EFAULT; + if (api_protocol_set_cmd(ilitek_data, GET_TP_RES, NULL, outbuf) < 0) + return -EFAULT; + if (api_protocol_set_cmd(ilitek_data, GET_IC_MODE, NULL, outbuf) < 0) + return -EFAULT; + + return 0; +} + +static int ilitek_input_dev_init(struct device *dev, + struct ilitek_ts_data *ilitek_data) +{ + int ret = 0, i = 0; + struct input_dev *input = NULL; + + if (!dev || !ilitek_data) + return -EINVAL; + + input = input_allocate_device(); + if (!input) + return -ENOMEM; + + input->name = ILITEK_TS_NAME; + input->id.bustype = BUS_I2C; + + __set_bit(INPUT_PROP_DIRECT, input->propbit); + input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); + input->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); + + input_set_abs_params(input, ABS_MT_POSITION_X, + ilitek_data->screen_min_x, + ilitek_data->screen_max_x, 0, 0); + input_set_abs_params(input, ABS_MT_POSITION_Y, + ilitek_data->screen_min_y, + ilitek_data->screen_max_y, 0, 0); + input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0); + input_set_abs_params(input, ABS_MT_WIDTH_MAJOR, 0, 255, 0, 0); + + input_mt_init_slots(input, ilitek_data->max_tp, INPUT_MT_DIRECT); + + for (i = 0; i < ilitek_data->keycount; i++) + set_bit(ilitek_data->keyinfo[i].id & KEY_MAX, input->keybit); + + ret = input_register_device(input); + if (ret) + dev_err(dev, "failed to register input device, err:%d\n", ret); + + ilitek_data->input_dev = input; + return ret; +} + +static irqreturn_t ilitek_i2c_isr(int irq, void *dev_id) +{ + struct ilitek_ts_data *ilitek_data = dev_id; + int ret = 0; + + if (!ilitek_data->process_and_report) { + dev_err(&ilitek_data->client->dev, "report touch cb is NULL\n"); + return IRQ_NONE; + } + + ilitek_irq_disable(ilitek_data); + mutex_lock(&ilitek_data->ilitek_mutex); + ret = ilitek_data->process_and_report(ilitek_data); + mutex_unlock(&ilitek_data->ilitek_mutex); + ilitek_irq_enable(ilitek_data); + + if (ret < 0) { + dev_err(&ilitek_data->client->dev, "process and report point failed, err:%d\n", + ret); + return IRQ_NONE; + } + + return IRQ_HANDLED; +} + +static int ilitek_request_irq(struct device *dev, + struct ilitek_ts_data *ilitek_data) +{ + int ret = 0; + + spin_lock_init(&ilitek_data->irq_lock); + ilitek_data->irq_status = true; + + ret = request_threaded_irq(ilitek_data->client->irq, NULL, + ilitek_i2c_isr, + IRQF_TRIGGER_FALLING | IRQF_ONESHOT, + "ilitek_touch_irq", ilitek_data); + if (ret) + dev_err(dev, "request threaded irq failed, err:%d\n", ret); + + return ret; +} + +static ssize_t firmware_version_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct i2c_client *client = to_i2c_client(dev); + struct ilitek_ts_data *ilitek_data = i2c_get_clientdata(client); + int ret = 0; + u8 outbuf[64] = {0}; + + ilitek_irq_disable(ilitek_data); + mutex_lock(&ilitek_data->ilitek_mutex); + ret = api_protocol_set_cmd(ilitek_data, GET_FW_VER, NULL, outbuf); + mutex_unlock(&ilitek_data->ilitek_mutex); + ilitek_irq_enable(ilitek_data); + + if (ret < 0) { + dev_err(dev, "api set cmd failed, err:%d\n", ret); + return ret; + } + + return scnprintf(buf, PAGE_SIZE, + "ILITEK FW ver: %d.%d.%d.%d.%d.%d.%d.%d\n", + ilitek_data->firmware_ver[0], + ilitek_data->firmware_ver[1], + ilitek_data->firmware_ver[2], + ilitek_data->firmware_ver[3], + ilitek_data->firmware_ver[4], + ilitek_data->firmware_ver[5], + ilitek_data->firmware_ver[6], + ilitek_data->firmware_ver[7]); +} +static DEVICE_ATTR_RO(firmware_version); + +static ssize_t product_id_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct i2c_client *client = to_i2c_client(dev); + struct ilitek_ts_data *ilitek_data = i2c_get_clientdata(client); + int ret = 0; + u8 outbuf[64] = {0}; + + ilitek_irq_disable(ilitek_data); + mutex_lock(&ilitek_data->ilitek_mutex); + ret = api_protocol_set_cmd(ilitek_data, GET_MCU_VER, NULL, outbuf); + mutex_unlock(&ilitek_data->ilitek_mutex); + ilitek_irq_enable(ilitek_data); + + if (ret < 0) { + dev_err(dev, "api set cmd failed, err:%d\n", ret); + return ret; + } + + return scnprintf(buf, PAGE_SIZE, "MCU: %s\n", ilitek_data->product_id); +} +static DEVICE_ATTR_RO(product_id); + +static struct attribute *ilitek_sysfs_attrs[] = { + &dev_attr_firmware_version.attr, + &dev_attr_product_id.attr, + NULL +}; + +static struct attribute_group ilitek_attrs_group[] = { + {.attrs = ilitek_sysfs_attrs}, +}; + +static int ilitek_create_sysfsnode(struct device *dev) +{ + int ret = 0; + + ret = sysfs_create_group(&dev->kobj, ilitek_attrs_group); + if (ret) + dev_err(dev, "sysfs create group failed, err:%d\n", ret); + + return ret; +} + +static int ilitek_ts_i2c_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct ilitek_ts_data *ilitek_data = NULL; + struct device *dev = &client->dev; + int ret = 0; + + ilitek_data = kzalloc(sizeof(*ilitek_data), GFP_KERNEL); + if (!ilitek_data) + return -ENOMEM; + + ilitek_data->client = client; + i2c_set_clientdata(client, ilitek_data); + + mutex_init(&ilitek_data->ilitek_mutex); + + ret = ilitek_request_gpio(dev, ilitek_data); + if (ret < 0) { + dev_err(dev, "request gpio failed, err:%d", ret); + goto err_put_gpiod; + } + + ilitek_reset(ilitek_data, 1000, true); + ret = ilitek_protocol_init(ilitek_data); + if (ret < 0) { + dev_err(dev, "protocol init failed, err:%d", ret); + goto err_put_gpiod; + } + + ret = ilitek_read_tp_info(ilitek_data, true); + if (ret < 0) { + dev_err(dev, "read tp info failed, err:%d", ret); + goto err_put_gpiod; + } + + ret = ilitek_input_dev_init(dev, ilitek_data); + if (ret < 0) { + dev_err(dev, "input dev init failed, err:%d", ret); + goto err_free_input_dev; + } + + ret = ilitek_request_irq(dev, ilitek_data); + if (ret < 0) { + dev_err(dev, "request irq failed, err:%d", ret); + goto err_free_input_dev; + } + + ret = ilitek_create_sysfsnode(dev); + if (ret < 0) { + dev_err(dev, "create sysfs node failed, err:%d", ret); + goto err_free_irq; + } + + return 0; + +err_free_irq: + free_irq(ilitek_data->client->irq, ilitek_data); + + input_unregister_device(ilitek_data->input_dev); +err_free_input_dev: + if (ilitek_data->input_dev) + input_free_device(ilitek_data->input_dev); +err_put_gpiod: + if (!IS_ERR(ilitek_data->reset_gpio)) + gpiod_put(ilitek_data->reset_gpio); + kfree(ilitek_data); + return ret; +} + +static int ilitek_ts_i2c_remove(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct ilitek_ts_data *ilitek_data = i2c_get_clientdata(client); + + sysfs_remove_group(&dev->kobj, ilitek_attrs_group); + + free_irq(ilitek_data->client->irq, ilitek_data); + + input_unregister_device(ilitek_data->input_dev); + + if (!IS_ERR(ilitek_data->reset_gpio)) + gpiod_put(ilitek_data->reset_gpio); + + kfree(ilitek_data); + + return 0; +} + +static const struct i2c_device_id ilitek_ts_i2c_id[] = { + {ILITEK_TS_NAME, 0}, + { /* not omitted */ }, +}; +MODULE_DEVICE_TABLE(i2c, ilitek_ts_i2c_id); + +#ifdef CONFIG_ACPI +static const struct acpi_device_id ilitekts_acpi_id[] = { + { "ILTK0001", 0 }, + { /* not omitted */ }, +}; +MODULE_DEVICE_TABLE(acpi, ilitekts_acpi_id); +#endif + +#ifdef CONFIG_OF +static const struct of_device_id ilitek_ts_i2c_match[] = { + {.compatible = "ilitek,ili2520",}, + {.compatible = "ilitek,ili2510",}, + { /* not omitted */ }, +}; +MODULE_DEVICE_TABLE(of, ilitek_ts_i2c_match); +#endif + +static struct i2c_driver ilitek_ts_i2c_driver = { + .driver = { + .name = ILITEK_TS_NAME, + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(ilitek_ts_i2c_match), + .acpi_match_table = ACPI_PTR(ilitekts_acpi_id), + }, + .probe = ilitek_ts_i2c_probe, + .remove = ilitek_ts_i2c_remove, + .id_table = ilitek_ts_i2c_id, +}; + +module_i2c_driver(ilitek_ts_i2c_driver); + +MODULE_AUTHOR("ILITEK"); +MODULE_DESCRIPTION("ILITEK I2C Touchscreen Driver"); +MODULE_LICENSE("GPL");