From patchwork Thu Nov 14 05:34:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Xu, Even" X-Patchwork-Id: 13874567 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2ECE11F891B; Thu, 14 Nov 2024 05:35:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.18 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731562522; cv=none; b=O43TXL+CQOgQMOGZY5smTw2re7mPVL6uRZuJvZBOE6KzrRC7671vy5czdGAWklC/7tTuFE+ppr+vI7AzeiYsODx2U3LblYa1gP1CCHHEjAujXEFmnI+70OQ3amycuS9qGLcfV5s6cCm8WQBTEwubBwd1B6iSqcz/CejmxfW99sQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731562522; c=relaxed/simple; bh=S2VGnoN8x+4uuiFuz+X+fHxqFUmuiVGq32WOlZ7OJdM=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=opWL4M6Qt9JIW7Iu2W8LiXFTpE11k4V4j7a2rhy9q0KrCGMFt2Rkz1DkzuP4k/JMKDuIDKk9ruMn5dwFpIsEcG6Tlh/PSvzFnxB41P4vH/MWHRV67GPYhuDpQ0AHbl0uIIApzPlY07UCPbSMV6wSZUoDwHt87FbmRXQs2fBtVTU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=cfvlrZVk; arc=none smtp.client-ip=192.198.163.18 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="cfvlrZVk" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1731562521; x=1763098521; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=S2VGnoN8x+4uuiFuz+X+fHxqFUmuiVGq32WOlZ7OJdM=; b=cfvlrZVk6joNktrRrFEL+b20TT+/6SK5cO2HYNf6NRYeXMcRn7yIqiPe BKA5eVRMoBLUUT2OGb/h3Q30XaDvkoexzicINni3Rj0TmeZXing9H0Vo7 ftVQwJbak2d5yOPdPBjnWfHgcXBTmvLFPvZEZNArdat/17Dedh5Lip4se pDpBNG/dOKpLD+U5SWYcvbZjaoUAtInWpJHyXGjo1qaKMZLj94fWQgeL8 dyqAn8A/0oIOelPILDQ+up8Ukm0xcnYvT8YvzsApKW1oEyVbI0LnCo4jy pZASnr8P5Hfigf5eR1tTER3PQMUzZn9Dy9YmZ68ZvBINMXX1KFrfhTgva w==; X-CSE-ConnectionGUID: ja5ifZqfTnKkXQ6R670Nhg== X-CSE-MsgGUID: jwuEwoeuTNeVv/74rrvJ9Q== X-IronPort-AV: E=McAfee;i="6700,10204,11255"; a="30869139" X-IronPort-AV: E=Sophos;i="6.12,153,1728975600"; d="scan'208";a="30869139" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by fmvoesa112.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Nov 2024 21:35:21 -0800 X-CSE-ConnectionGUID: /8JyXSwnQ+S0LrgSCtDY+A== X-CSE-MsgGUID: js82RsSxSvGLB+Rg+TGMWw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,153,1728975600"; d="scan'208";a="92891711" Received: from shsensorbuild.sh.intel.com ([10.239.133.18]) by fmviesa004.fm.intel.com with ESMTP; 13 Nov 2024 21:35:18 -0800 From: Even Xu To: jikos@kernel.org, bentiss@kernel.org, corbet@lwn.net, bagasdotme@gmail.com, aaron.ma@canonical.com Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, Even Xu , Xinpeng Sun , Rui Zhang , Srinivas Pandruvada Subject: [PATCH v2 18/22] HID: intel-thc-hid: intel-quicki2c: Add THC QuickI2C driver hid layer Date: Thu, 14 Nov 2024 13:34:12 +0800 Message-Id: <20241114053416.4085715-19-even.xu@intel.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20241114053416.4085715-1-even.xu@intel.com> References: <20241114053416.4085715-1-even.xu@intel.com> Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add HID Low level driver callbacks and hid probe function to register QucikI2C as a HID driver, and external touch device as a HID device. Co-developed-by: Xinpeng Sun Signed-off-by: Xinpeng Sun Signed-off-by: Even Xu Tested-by: Rui Zhang Reviewed-by: Srinivas Pandruvada --- drivers/hid/intel-thc-hid/Makefile | 1 + .../intel-quicki2c/quicki2c-dev.h | 11 ++ .../intel-quicki2c/quicki2c-hid.c | 142 ++++++++++++++++++ .../intel-quicki2c/quicki2c-hid.h | 14 ++ include/linux/hid-over-i2c.h | 44 ++++++ 5 files changed, 212 insertions(+) create mode 100644 drivers/hid/intel-thc-hid/intel-quicki2c/quicki2c-hid.c create mode 100644 drivers/hid/intel-thc-hid/intel-quicki2c/quicki2c-hid.h create mode 100644 include/linux/hid-over-i2c.h diff --git a/drivers/hid/intel-thc-hid/Makefile b/drivers/hid/intel-thc-hid/Makefile index 4d4f02e1c415..91bde6d6aa14 100644 --- a/drivers/hid/intel-thc-hid/Makefile +++ b/drivers/hid/intel-thc-hid/Makefile @@ -16,5 +16,6 @@ intel-quickspi-objs += intel-quickspi/quickspi-protocol.o obj-$(CONFIG_INTEL_QUICKI2C) += intel-quicki2c.o intel-quicki2c-objs += intel-quicki2c/pci-quicki2c.o +intel-quicki2c-objs += intel-quicki2c/quicki2c-hid.o ccflags-y += -I $(src)/intel-thc diff --git a/drivers/hid/intel-thc-hid/intel-quicki2c/quicki2c-dev.h b/drivers/hid/intel-thc-hid/intel-quicki2c/quicki2c-dev.h index 90c4ffe5ccfa..9e2a863d8135 100644 --- a/drivers/hid/intel-thc-hid/intel-quicki2c/quicki2c-dev.h +++ b/drivers/hid/intel-thc-hid/intel-quicki2c/quicki2c-dev.h @@ -4,6 +4,8 @@ #ifndef _QUICKI2C_DEV_H_ #define _QUICKI2C_DEV_H_ +#include + #define THC_LNL_DEVICE_ID_I2C_PORT1 0xA848 #define THC_LNL_DEVICE_ID_I2C_PORT2 0xA84A #define THC_PTL_H_DEVICE_ID_I2C_PORT1 0xE348 @@ -26,23 +28,32 @@ enum quicki2c_dev_state { struct device; struct pci_dev; struct thc_device; +struct hid_device; /** * struct quicki2c_device - THC QuickI2C device struct * @dev: point to kernel device * @pdev: point to PCI device * @thc_hw: point to THC device + * @hid_dev: point to hid device * @driver_data: point to quicki2c specific driver data * @state: THC I2C device state * @mem_addr: MMIO memory address + * @dev_desc: device descriptor for HIDI2C protocol + * @report_descriptor: store a copy of device report descriptor */ struct quicki2c_device { struct device *dev; struct pci_dev *pdev; struct thc_device *thc_hw; + struct hid_device *hid_dev; enum quicki2c_dev_state state; void __iomem *mem_addr; + + struct hidi2c_dev_descriptor dev_desc; + + u8 *report_descriptor; }; #endif /* _QUICKI2C_DEV_H_ */ diff --git a/drivers/hid/intel-thc-hid/intel-quicki2c/quicki2c-hid.c b/drivers/hid/intel-thc-hid/intel-quicki2c/quicki2c-hid.c new file mode 100644 index 000000000000..4236603f3f76 --- /dev/null +++ b/drivers/hid/intel-thc-hid/intel-quicki2c/quicki2c-hid.c @@ -0,0 +1,142 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) 2024 Intel Corporation */ + +#include +#include + +#include "quicki2c-dev.h" +#include "quicki2c-hid.h" + +/** + * quicki2c_hid_parse() - HID core parse() callback + * + * @hid: HID device instance + * + * This function gets called during call to hid_add_device + * + * Return: 0 on success and non zero on error. + */ +static int quicki2c_hid_parse(struct hid_device *hid) +{ + struct quicki2c_device *qcdev = hid->driver_data; + + if (qcdev->report_descriptor) + return hid_parse_report(hid, qcdev->report_descriptor, + le16_to_cpu(qcdev->dev_desc.report_desc_len)); + + dev_err_once(qcdev->dev, "invalid report descriptor\n"); + return -EINVAL; +} + +static int quicki2c_hid_start(struct hid_device *hid) +{ + return 0; +} + +static void quicki2c_hid_stop(struct hid_device *hid) +{ +} + +static int quicki2c_hid_open(struct hid_device *hid) +{ + return 0; +} + +static void quicki2c_hid_close(struct hid_device *hid) +{ +} + +static int quicki2c_hid_raw_request(struct hid_device *hid, + unsigned char reportnum, + __u8 *buf, size_t len, + unsigned char rtype, int reqtype) +{ + return 0; +} + +static int quicki2c_hid_power(struct hid_device *hid, int lvl) +{ + return 0; +} + +static struct hid_ll_driver quicki2c_hid_ll_driver = { + .parse = quicki2c_hid_parse, + .start = quicki2c_hid_start, + .stop = quicki2c_hid_stop, + .open = quicki2c_hid_open, + .close = quicki2c_hid_close, + .power = quicki2c_hid_power, + .raw_request = quicki2c_hid_raw_request, +}; + +/** + * quicki2c_hid_probe() - Register HID low level driver + * + * @qcdev: point to quicki2c device + * + * This function is used to allocate and add HID device. + * + * Return: 0 on success, non zero on error. + */ +int quicki2c_hid_probe(struct quicki2c_device *qcdev) +{ + struct hid_device *hid; + int ret; + + hid = hid_allocate_device(); + if (IS_ERR(hid)) + return PTR_ERR(hid); + + hid->ll_driver = &quicki2c_hid_ll_driver; + hid->bus = BUS_PCI; + hid->dev.parent = qcdev->dev; + hid->driver_data = qcdev; + hid->version = le16_to_cpu(qcdev->dev_desc.version_id); + hid->vendor = le16_to_cpu(qcdev->dev_desc.vendor_id); + hid->product = le16_to_cpu(qcdev->dev_desc.product_id); + snprintf(hid->name, sizeof(hid->name), "%s %04X:%04X", "quicki2c-hid", + hid->vendor, hid->product); + + ret = hid_add_device(hid); + if (ret) { + hid_destroy_device(hid); + return ret; + } + + qcdev->hid_dev = hid; + + return 0; +} + +/** + * quicki2c_hid_remove() - Destroy HID device + * + * @qcdev: point to quicki2c device + * + * Return: 0 on success, non zero on error. + */ +void quicki2c_hid_remove(struct quicki2c_device *qcdev) +{ + hid_destroy_device(qcdev->hid_dev); +} + +/** + * quicki2c_hid_send_report() - Send HID input report data to HID core + * + * @qcdev: point to quicki2c device + * @data: point to input report data buffer + * @data_len: the length of input report data + * + * Return: 0 on success, non zero on error. + */ +int quicki2c_hid_send_report(struct quicki2c_device *qcdev, + void *data, size_t data_len) +{ + int ret; + + ret = hid_input_report(qcdev->hid_dev, HID_INPUT_REPORT, data, data_len, 1); + if (ret) + dev_err(qcdev->dev, "Failed to send HID input report, ret = %d.\n", ret); + + return ret; +} diff --git a/drivers/hid/intel-thc-hid/intel-quicki2c/quicki2c-hid.h b/drivers/hid/intel-thc-hid/intel-quicki2c/quicki2c-hid.h new file mode 100644 index 000000000000..e80df5f339fe --- /dev/null +++ b/drivers/hid/intel-thc-hid/intel-quicki2c/quicki2c-hid.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) 2024 Intel Corporation */ + +#ifndef _QUICKI2C_HID_H_ +#define _QUICKI2C_HID_H_ + +struct quicki2c_device; + +int quicki2c_hid_send_report(struct quicki2c_device *qcdev, + void *data, size_t data_size); +int quicki2c_hid_probe(struct quicki2c_device *qcdev); +void quicki2c_hid_remove(struct quicki2c_device *qcdev); + +#endif /* _QUICKI2C_HID_H_ */ diff --git a/include/linux/hid-over-i2c.h b/include/linux/hid-over-i2c.h new file mode 100644 index 000000000000..b70626723a38 --- /dev/null +++ b/include/linux/hid-over-i2c.h @@ -0,0 +1,44 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright 2024 Intel Corporation */ + +#ifndef _HID_OVER_I2C_H_ +#define _HID_OVER_I2C_H_ + +/** + * struct hidi2c_dev_descriptor - HIDI2C device descriptor definition + * @dev_desc_len: The length of the complete device descriptor, fixed to 0x1E (30). + * @bcd_ver: The version number of the HIDI2C protocol supported. + * In binary coded decimal (BCD) format. + * @report_desc_len: The length of the report descriptor + * @report_desc_reg: The register address to retrieve report descriptor + * @input_reg: the register address to retrieve input report + * @max_input_len: The length of the largest possible HID input (or feature) report + * @output_reg: the register address to send output report + * @max_output_len: The length of the largest output (or feature) report + * @cmd_reg: the register address to send command + * @data_reg: the register address to send command data + * @vendor_id: Device manufacturers vendor ID + * @product_id: Device unique model/product ID + * @version_id: Device’s unique version + * @reserved0: Reserved and should be 0 + * @reserved1: Reserved and should be 0 + */ +struct hidi2c_dev_descriptor { + __le16 dev_desc_len; + __le16 bcd_ver; + __le16 report_desc_len; + __le16 report_desc_reg; + __le16 input_reg; + __le16 max_input_len; + __le16 output_reg; + __le16 max_output_len; + __le16 cmd_reg; + __le16 data_reg; + __le16 vendor_id; + __le16 product_id; + __le16 version_id; + __le16 reserved0; + __le16 reserved1; +} __packed; + +#endif /* _HID_OVER_I2C_H_ */