From patchwork Thu Mar 4 05:57:23 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: 12115475 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=-16.7 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,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 CA304C433E6 for ; Thu, 4 Mar 2021 05:59:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9E20F64EFE for ; Thu, 4 Mar 2021 05:59:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234488AbhCDF6t (ORCPT ); Thu, 4 Mar 2021 00:58:49 -0500 Received: from mail.ilitek.com ([60.248.80.92]:50611 "EHLO cello.ilitek.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S234454AbhCDF6b (ORCPT ); Thu, 4 Mar 2021 00:58:31 -0500 X-UUID: 45d4363202af464cbff9ac987f8b6a05-20210304 X-UUID: 45d4363202af464cbff9ac987f8b6a05-20210304 Received: from ex2.ili.com.tw [(192.168.1.132)] 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 552667110; Thu, 04 Mar 2021 13:57:21 +0800 Received: from EX1.ili.com.tw (192.168.1.131) by EX2.ili.com.tw (192.168.1.132) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Thu, 4 Mar 2021 13:57:20 +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; Thu, 4 Mar 2021 13:57:20 +0800 From: Joe Hung To: , , CC: , , Subject: [PATCH v5 1/2] dt-bindings: input: touchscreen: ilitek_ts_i2c: Add bindings Date: Thu, 4 Mar 2021 13:57:23 +0800 Message-ID: <20210304055724.63695-1-joe_hung@ilitek.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Add binding documentation for ILITEK touch devices. Signed-off-by: Joe Hung Reviewed-by: Rob Herring --- Changes in v5: - Remove tab in yaml Changes in v4: - Change IRQ flag to level interrupt - Add support for common touchscreen-related properties - Modify reset gpio to active low - Modify irq type to LEVEL_LOW - Add compatible for Lego series ICs Changes in v3: - Add include header in examples, and pass the dt binding check Changes in v2: - Convert to DT schema format - Using interrupts instead of irq-gpios .../input/touchscreen/ilitek_ts_i2c.yaml | 73 +++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/ilitek_ts_i2c.yaml -- 2.25.1 diff --git a/Documentation/devicetree/bindings/input/touchscreen/ilitek_ts_i2c.yaml b/Documentation/devicetree/bindings/input/touchscreen/ilitek_ts_i2c.yaml new file mode 100644 index 000000000000..a190e7baac31 --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/ilitek_ts_i2c.yaml @@ -0,0 +1,73 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/input/touchscreen/ilitek_ts_i2c.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Ilitek I2C Touchscreen Controller + +maintainers: + - Dmitry Torokhov + +allOf: + - $ref: touchscreen.yaml# + +properties: + compatible: + enum: + - ilitek,ili2130 + - ilitek,ili2131 + - ilitek,ili2132 + - ilitek,ili2316 + - ilitek,ili2322 + - ilitek,ili2323 + - ilitek,ili2326 + - ilitek,ili2520 + - ilitek,ili2521 + + reg: + const: 0x41 + + interrupts: + maxItems: 1 + + reset-gpios: + maxItems: 1 + + wakeup-source: + type: boolean + description: touchscreen can be used as a wakeup source. + + touchscreen-size-x: true + touchscreen-size-y: true + touchscreen-inverted-x: true + touchscreen-inverted-y: true + touchscreen-swapped-x-y: true + +additionalProperties: false + +required: + - compatible + - reg + - interrupts + - reset-gpios + +examples: + - | + #include + #include + i2c { + #address-cells = <1>; + #size-cells = <0>; + + touchscreen@41 { + compatible = "ilitek,ili2520"; + reg = <0x41>; + + interrupt-parent = <&gpio1>; + interrupts = <7 IRQ_TYPE_LEVEL_LOW>; + reset-gpios = <&gpio1 8 GPIO_ACTIVE_LOW>; + touchscreen-inverted-y; + wakeup-source; + }; + }; From patchwork Thu Mar 4 05:57:24 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: 12115477 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,URIBL_BLOCKED,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 0C6EBC43381 for ; Thu, 4 Mar 2021 05:59:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C335960234 for ; Thu, 4 Mar 2021 05:59:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234344AbhCDF6u (ORCPT ); Thu, 4 Mar 2021 00:58:50 -0500 Received: from mail.ilitek.com ([60.248.80.92]:50616 "EHLO cello.ilitek.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S234457AbhCDF6c (ORCPT ); Thu, 4 Mar 2021 00:58:32 -0500 X-UUID: 972ce59d23da425a93a860b4b6974a4a-20210304 X-UUID: 972ce59d23da425a93a860b4b6974a4a-20210304 Received: from ex2.ili.com.tw [(192.168.1.132)] 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 1937865789; Thu, 04 Mar 2021 13:57:23 +0800 Received: from EX1.ili.com.tw (192.168.1.131) by EX2.ili.com.tw (192.168.1.132) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Thu, 4 Mar 2021 13:57:21 +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; Thu, 4 Mar 2021 13:57:21 +0800 From: Joe Hung To: , , CC: , , Subject: [PATCH v5 2/2] input: touchscreen: Add support for ILITEK Lego Series Date: Thu, 4 Mar 2021 13:57:24 +0800 Message-ID: <20210304055724.63695-2-joe_hung@ilitek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210304055724.63695-1-joe_hung@ilitek.com> References: <20210304055724.63695-1-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/23XX/25XX. Tested and passed with evaluation board with ILI2520 IC. Signed-off-by: Joe Hung --- Changes in v5: - None Changes in v4: - Remove unused inlcude header file - Remove parenthesis for scalar values - Place to use standard macro DIV_ROUND_UP - Remove unused/unrequired member of struct - Remove retries when I2C transfer - Remove irq_disable/enable wrapper - Remove key handler - Adjust to use get_unaligned_le16/be16 - Modify ilitek_reset() to leave reset gpio in-active finally - Remove null check for input argument that should not happen - Modify return value for read_tp_info() - Modify to use common touchscreen_* api - Add error handling for input_mt_init_slots - Modify input flag for irq request, and parse it from ACPI/DTS - Return stored value instead of querying via I2C in *_show api - Modify to use devm_* APIs and get rid of remove api - Add PM (suspend/resume) handling Changes in v3: - None 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 | 761 ++++++++++++++++++++++ 3 files changed, 774 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..03a16852d4bc 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 213X/23XX/25XX/Lego Series Touch ICs" + depends on I2C + help + Say Y here if you have touchscreen with ILITEK touch IC, + it supports 213X/23XX/25XX and 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..1622e66c4eaa 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..54c95a090b62 --- /dev/null +++ b/drivers/input/touchscreen/ilitek_ts_i2c.c @@ -0,0 +1,761 @@ +// 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 + + +#define ILITEK_TS_NAME "ilitek_ts" +#define BL_V1_8 0x108 +#define BL_V1_7 0x107 +#define BL_V1_6 0x106 + +#define ILITEK_TP_CMD_GET_TP_RES 0x20 +#define ILITEK_TP_CMD_GET_SCRN_RES 0x21 +#define ILITEK_TP_CMD_SET_IC_SLEEP 0x30 +#define ILITEK_TP_CMD_SET_IC_WAKE 0x31 +#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 PTL_V3 0x03 +#define PTL_V6 0x06 + +#define MOD_AP 0x5A +#define MOD_BL 0x55 + + +struct ilitek_protocol_info { + u16 ver; + u8 ver_major; + u8 flag; +}; + +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 touchscreen_properties prop; + + int (*process_and_report)(struct ilitek_ts_data *ilitek_data); + + struct PROTOCOL_MAP *ptl_cb_func; + struct ilitek_protocol_info ptl; + + struct ilitek_touch_info tpinfo[ILITEK_SUPPORT_MAX_POINT]; + + char product_id[30]; + u16 mcu_ver; + u8 ic_mode; + u8 firmware_ver[8]; + + s32 reset_time; + s32 screen_max_x; + s32 screen_max_y; + s32 screen_min_x; + s32 screen_min_y; + s32 max_tp; +}; + +enum ilitek_cmds { + /* common cmds */ + GET_PTL_VER = 0, + GET_FW_VER, + GET_SCRN_RES, + GET_TP_RES, + GET_IC_MODE, + GET_MCU_VER, + SET_IC_SLEEP, + SET_IC_WAKE, + + /* ALWAYS keep at the end */ + MAX_CMD_CNT +}; + +typedef int protocol_func(struct ilitek_ts_data *ilitek_data, + u16 cmd, u8 *inbuf, u8 *outbuf); + +struct PROTOCOL_MAP { + u16 cmd; + const char *name; + protocol_func *func; + u8 flag; +}; + +/* ILITEK I2C R/W APIs */ +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 (delay == 0 && write_len > 0 && read_len > 0) { + ret = i2c_transfer(client->adapter, msgs, 2); + if (ret < 0) + return ret; + } else { + if (write_len > 0) { + ret = i2c_transfer(client->adapter, msgs, 1); + if (ret < 0) + return ret; + } + if (delay > 0) + mdelay(delay); + if (read_len > 0) { + ret = i2c_transfer(client->adapter, msgs + 1, 1); + if (ret < 0) + return ret; + } + } + + return 0; +} + +/* ILITEK ISR APIs */ +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); + + touchscreen_report_pos(input, &ilitek_data->prop, x, y, true); + + 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; +} + +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); +} + +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); + ret = -EINVAL; + goto err_release_touch_and_key; + } + + count = DIV_ROUND_UP(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 = get_unaligned_le16(buf + i * packet_len + 2); + y = get_unaligned_le16(buf + i * packet_len + 4); + + 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); + } + + if (release_point == report_max_point) + ilitek_touch_release_all(ilitek_data); + + input_sync(input); + return 0; + +err_release_touch_and_key: + ilitek_touch_release_all(ilitek_data); + 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 (idx >= MAX_CMD_CNT) + return -EINVAL; + + /* check if cmd is supported by its protocol version */ + if (!(ilitek_data->ptl.flag & ilitek_data->ptl_cb_func[idx].flag)) + 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}; + + 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 = get_unaligned_be16(outbuf); + ilitek_data->ptl.ver_major = outbuf[0]; + + 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}; + + buf[0] = cmd; + ret = ilitek_i2c_write_and_read(ilitek_data, buf, 1, 5, outbuf, 32); + if (ret < 0) + return ret; + + ilitek_data->mcu_ver = get_unaligned_le16(outbuf); + 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}; + + buf[0] = cmd; + 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}; + + buf[0] = cmd; + ret = ilitek_i2c_write_and_read(ilitek_data, buf, 1, 5, outbuf, 8); + if (ret < 0) + return ret; + + ilitek_data->screen_min_x = get_unaligned_le16(outbuf); + ilitek_data->screen_min_y = get_unaligned_le16(outbuf + 2); + ilitek_data->screen_max_x = get_unaligned_le16(outbuf + 4); + ilitek_data->screen_max_y = get_unaligned_le16(outbuf + 6); + + return ret; +} + +static int api_protocol_get_tp_res(struct ilitek_ts_data *ilitek_data, + u16 cmd, u8 *inbuf, u8 *outbuf) +{ + int ret = 0; + u8 buf[64] = {0}; + + buf[0] = cmd; + ret = ilitek_i2c_write_and_read(ilitek_data, buf, 1, 5, outbuf, 15); + if (ret < 0) + return ret; + + ilitek_data->max_tp = outbuf[8]; + + 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}; + + buf[0] = cmd; + 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; +} + +static int api_protocol_set_ic_sleep(struct ilitek_ts_data *ilitek_data, + u16 cmd, u8 *inbuf, u8 *outbuf) +{ + u8 buf[64] = {0}; + + buf[0] = cmd; + return ilitek_i2c_write_and_read(ilitek_data, buf, 1, 0, NULL, 0); +} + +static int api_protocol_set_ic_wake(struct ilitek_ts_data *ilitek_data, + u16 cmd, u8 *inbuf, u8 *outbuf) +{ + u8 buf[64] = {0}; + + buf[0] = cmd; + return ilitek_i2c_write_and_read(ilitek_data, buf, 1, 0, NULL, 0); +} + +struct PROTOCOL_MAP ptl_func_map[] = { + /* common cmds */ + [GET_PTL_VER] = {ILITEK_TP_CMD_GET_PRL_VER, "GET_PTL_VER", + api_protocol_get_ptl_ver, PTL_V3 | PTL_V6}, + [GET_FW_VER] = {ILITEK_TP_CMD_GET_FW_VER, "GET_FW_VER", + api_protocol_get_fw_ver, PTL_V3 | PTL_V6}, + [GET_SCRN_RES] = {ILITEK_TP_CMD_GET_SCRN_RES, "GET_SCRN_RES", + api_protocol_get_scrn_res, PTL_V3 | PTL_V6}, + [GET_TP_RES] = {ILITEK_TP_CMD_GET_TP_RES, "GET_TP_RES", + api_protocol_get_tp_res, PTL_V3 | PTL_V6}, + [GET_IC_MODE] = {ILITEK_TP_CMD_GET_IC_MODE, "GET_IC_MODE", + api_protocol_get_ic_mode, PTL_V3 | PTL_V6}, + [GET_MCU_VER] = {ILITEK_TP_CMD_GET_MCU_VER, "GET_MOD_VER", + api_protocol_get_mcu_ver, PTL_V3 | PTL_V6}, + [SET_IC_SLEEP] = {ILITEK_TP_CMD_SET_IC_SLEEP, "SET_IC_SLEEP", + api_protocol_set_ic_sleep, PTL_V3 | PTL_V6}, + [SET_IC_WAKE] = {ILITEK_TP_CMD_SET_IC_WAKE, "SET_IC_WAKE", + api_protocol_set_ic_wake, PTL_V3 | PTL_V6}, +}; + +/* Probe APIs */ +static void ilitek_reset(struct ilitek_ts_data *ilitek_data, + int delay, bool boot) +{ + if (!boot) + disable_irq_nosync(ilitek_data->client->irq); + + if (ilitek_data->reset_gpio) { + gpiod_set_value(ilitek_data->reset_gpio, 1); + mdelay(10); + + gpiod_set_value(ilitek_data->reset_gpio, 0); + mdelay(delay); + } + + if (!boot) + enable_irq(ilitek_data->client->irq); +} + +static int ilitek_protocol_init(struct ilitek_ts_data *ilitek_data) +{ + int ret = 0; + u8 outbuf[64] = {0}; + + ilitek_data->ptl.flag = PTL_V6; + ilitek_data->ptl_cb_func = ptl_func_map; + ilitek_data->process_and_report = ilitek_process_and_report_v6; + ilitek_data->reset_time = 600; + + ret = api_protocol_set_cmd(ilitek_data, GET_PTL_VER, NULL, outbuf); + if (ret < 0) + return ret; + + /* Protocol v3 is not support currently */ + if (ilitek_data->ptl.ver_major == 0x3 || + ilitek_data->ptl.ver == BL_V1_6 || + ilitek_data->ptl.ver == BL_V1_7) + return -EINVAL; + + return 0; +} + +static int ilitek_read_tp_info(struct ilitek_ts_data *ilitek_data, bool boot) +{ + u8 outbuf[256] = {0}; + int error = 0; + + error = api_protocol_set_cmd(ilitek_data, GET_PTL_VER, NULL, outbuf); + if (error < 0) + return error; + + error = api_protocol_set_cmd(ilitek_data, GET_MCU_VER, NULL, outbuf); + if (error < 0) + return error; + + error = api_protocol_set_cmd(ilitek_data, GET_FW_VER, NULL, outbuf); + if (error < 0) + return error; + + if (boot) { + error = api_protocol_set_cmd(ilitek_data, GET_SCRN_RES, NULL, + outbuf); + if (error < 0) + return error; + } + + error = api_protocol_set_cmd(ilitek_data, GET_TP_RES, NULL, outbuf); + if (error < 0) + return error; + + error = api_protocol_set_cmd(ilitek_data, GET_IC_MODE, NULL, outbuf); + if (error < 0) + return error; + + return 0; +} + +static int ilitek_input_dev_init(struct device *dev, + struct ilitek_ts_data *ilitek_data) +{ + int ret = 0; + struct input_dev *input = NULL; + + input = devm_input_allocate_device(dev); + if (!input) + return -ENOMEM; + + ilitek_data->input_dev = input; + 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); + + touchscreen_parse_properties(input, true, &ilitek_data->prop); + + ret = input_mt_init_slots(input, ilitek_data->max_tp, INPUT_MT_DIRECT); + if (ret) { + dev_err(dev, "failed to initialize MT slots, err:%d\n", ret); + return ret; + } + + ret = input_register_device(input); + if (ret) { + dev_err(dev, "failed to register input device, err:%d\n", ret); + return ret; + } + + return 0; +} + +static irqreturn_t ilitek_i2c_isr(int irq, void *dev_id) +{ + struct ilitek_ts_data *ilitek_data = dev_id; + int ret = 0; + + ret = ilitek_data->process_and_report(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 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); + + 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); + + 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_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 = devm_kzalloc(dev, sizeof(*ilitek_data), GFP_KERNEL); + if (!ilitek_data) + return -ENOMEM; + + ilitek_data->client = client; + i2c_set_clientdata(client, ilitek_data); + + ilitek_data->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR(ilitek_data->reset_gpio)) { + ret = PTR_ERR(ilitek_data->reset_gpio); + dev_err(dev, "request gpiod failed, err:%d", ret); + return ret; + } + + ilitek_reset(ilitek_data, 1000, true); + ret = ilitek_protocol_init(ilitek_data); + if (ret < 0) { + dev_err(dev, "protocol init failed, err:%d", ret); + return ret; + } + + ret = ilitek_read_tp_info(ilitek_data, true); + if (ret < 0) { + dev_err(dev, "read tp info failed, err:%d", ret); + return ret; + } + + ret = ilitek_input_dev_init(dev, ilitek_data); + if (ret < 0) { + dev_err(dev, "input dev init failed, err:%d", ret); + return ret; + } + + ret = devm_request_threaded_irq(dev, ilitek_data->client->irq, NULL, + ilitek_i2c_isr, IRQF_ONESHOT, + "ilitek_touch_irq", ilitek_data); + if (ret) { + dev_err(dev, "request threaded irq failed, err:%d\n", ret); + return ret; + } + + ret = devm_device_add_group(dev, ilitek_attrs_group); + if (ret) { + dev_err(dev, "sysfs create group failed, err:%d\n", ret); + return ret; + } + + return 0; +} + +static int __maybe_unused ilitek_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct ilitek_ts_data *ilitek_data = i2c_get_clientdata(client); + int error = 0; + + disable_irq(client->irq); + + if (device_may_wakeup(dev)) { + enable_irq_wake(client->irq); + } else { + error = api_protocol_set_cmd(ilitek_data, SET_IC_SLEEP, + NULL, NULL); + if (error < 0) + return error; + } + + return 0; +} + +static int __maybe_unused ilitek_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct ilitek_ts_data *ilitek_data = i2c_get_clientdata(client); + int error = 0; + + if (device_may_wakeup(dev)) { + disable_irq_wake(client->irq); + } else { + error = api_protocol_set_cmd(ilitek_data, SET_IC_WAKE, + NULL, NULL); + if (error < 0) + return error; + } + + ilitek_reset(ilitek_data, ilitek_data->reset_time, false); + enable_irq(client->irq); + + return 0; +} + +static SIMPLE_DEV_PM_OPS(ilitek_pm_ops, ilitek_suspend, ilitek_resume); + +static const struct i2c_device_id ilitek_ts_i2c_id[] = { + {ILITEK_TS_NAME, 0}, + { }, +}; +MODULE_DEVICE_TABLE(i2c, ilitek_ts_i2c_id); + +#ifdef CONFIG_ACPI +static const struct acpi_device_id ilitekts_acpi_id[] = { + { "ILTK0001", 0 }, + { }, +}; +MODULE_DEVICE_TABLE(acpi, ilitekts_acpi_id); +#endif + +#ifdef CONFIG_OF +static const struct of_device_id ilitek_ts_i2c_match[] = { + {.compatible = "ilitek,ili2130",}, + {.compatible = "ilitek,ili2131",}, + {.compatible = "ilitek,ili2132",}, + {.compatible = "ilitek,ili2316",}, + {.compatible = "ilitek,ili2322",}, + {.compatible = "ilitek,ili2323",}, + {.compatible = "ilitek,ili2326",}, + {.compatible = "ilitek,ili2520",}, + {.compatible = "ilitek,ili2521",}, + { }, +}; +MODULE_DEVICE_TABLE(of, ilitek_ts_i2c_match); +#endif + +static struct i2c_driver ilitek_ts_i2c_driver = { + .driver = { + .name = ILITEK_TS_NAME, + .pm = &ilitek_pm_ops, + .of_match_table = of_match_ptr(ilitek_ts_i2c_match), + .acpi_match_table = ACPI_PTR(ilitekts_acpi_id), + }, + .probe = ilitek_ts_i2c_probe, + .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");