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Sun, 9 Aug 2020 10:25:50 +0000 From: Sandeep Singh To: jikos@kernel.org, benjamin.tissoires@redhat.com, linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, srinivas.pandruvada@linux.intel.com, jic23@kernel.org, linux-iio@vger.kernel.org, hdegoede@redhat.com, Nehal-bakulchandra.Shah@amd.com, andy.shevchenko@gmail.com, mail@richard-neumann.de, m.felsch@pengutronix.de Cc: Shyam-sundar.S-k@amd.com, Sandeep Singh Subject: [PATCH v6 2/4] SFH: PCIe driver to add support of AMD sensor fusion Date: Sun, 9 Aug 2020 10:25:09 +0000 Message-Id: <20200809102511.2657644-3-Sandeep.Singh@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200809102511.2657644-1-Sandeep.Singh@amd.com> References: <20200809102511.2657644-1-Sandeep.Singh@amd.com> X-ClientProxiedBy: MA1PR0101CA0044.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a00:22::30) To BYAPR12MB2726.namprd12.prod.outlook.com (2603:10b6:a03:66::17) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from jatayu.amd.com (165.204.156.251) by MA1PR0101CA0044.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a00:22::30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3261.19 via Frontend Transport; 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PTR:; CAT:NONE; SFTY:; SFS:(4636009)(396003)(346002)(376002)(136003)(366004)(39850400004)(1076003)(7416002)(956004)(5660300002)(83380400001)(2616005)(66556008)(66476007)(16526019)(6486002)(66946007)(26005)(186003)(7696005)(8676002)(8936002)(36756003)(316002)(2906002)(6666004)(86362001)(478600001)(4326008)(52116002)(921003); DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: 9e747ddb-02a8-459e-d749-08d83c4e9640 X-MS-Exchange-CrossTenant-AuthSource: BYAPR12MB2726.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Aug 2020 10:25:50.0591 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: afyuB1peSueVvD/oiK/KPzzxt15rmwKIc548cjx0evEGAXCbRNkh4L7BWPeH7cCE X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR12MB3778 Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org From: Sandeep Singh AMD SFH uses HID over PCIe bus.SFH fw is part of MP2 processor (MP2 which is an ARM® Cortex-M4 core based co-processor to x86) and it runs on MP2 where in driver resides on X86. This part of module will communicate with MP2 FW and provide that data into DRAM Signed-off-by: Nehal Shah Signed-off-by: Sandeep Singh --- drivers/hid/Kconfig | 2 + drivers/hid/Makefile | 2 + drivers/hid/amd-sfh-hid/Kconfig | 21 ++++ drivers/hid/amd-sfh-hid/Makefile | 15 +++ drivers/hid/amd-sfh-hid/amd_mp2_pcie.c | 162 +++++++++++++++++++++++++ drivers/hid/amd-sfh-hid/amd_mp2_pcie.h | 83 +++++++++++++ 6 files changed, 285 insertions(+) create mode 100644 drivers/hid/amd-sfh-hid/Kconfig create mode 100644 drivers/hid/amd-sfh-hid/Makefile create mode 100644 drivers/hid/amd-sfh-hid/amd_mp2_pcie.c create mode 100644 drivers/hid/amd-sfh-hid/amd_mp2_pcie.h diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig index 45e87dc59d4e..c0a1c07ed6b1 100644 --- a/drivers/hid/Kconfig +++ b/drivers/hid/Kconfig @@ -1174,4 +1174,6 @@ source "drivers/hid/i2c-hid/Kconfig" source "drivers/hid/intel-ish-hid/Kconfig" +source "drivers/hid/amd-sfh-hid/Kconfig" + endmenu diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile index d8ea4b8c95af..7d8ca4e34572 100644 --- a/drivers/hid/Makefile +++ b/drivers/hid/Makefile @@ -141,3 +141,5 @@ obj-$(CONFIG_I2C_HID) += i2c-hid/ obj-$(CONFIG_INTEL_ISH_HID) += intel-ish-hid/ obj-$(INTEL_ISH_FIRMWARE_DOWNLOADER) += intel-ish-hid/ + +obj-$(CONFIG_AMD_SFH_HID) += amd-sfh-hid/ diff --git a/drivers/hid/amd-sfh-hid/Kconfig b/drivers/hid/amd-sfh-hid/Kconfig new file mode 100644 index 000000000000..e73cf9fe1324 --- /dev/null +++ b/drivers/hid/amd-sfh-hid/Kconfig @@ -0,0 +1,21 @@ +# SPDX-License-Identifier: GPL-2.0-or-later +menu "AMD SFH HID support" + depends on X86_64 || COMPILE_TEST + depends on PCI + +config AMD_SFH_HID + tristate "AMD Sensor Fusion Hub" + select HID + help + If you say yes to this option, support will be included for the AMD + Sensor Fusion Hub. + This driver will enable sensors functionality to user through HID + framework. Basically this driver will get data from MP2 FW + and provide that data to HID framework. + MP2 which is an ARM® Cortex-M4 core based co-processor to x86. + + This driver can also be built as modules. If so, the modules will + be called amd-sfhtp-hid. + Say Y or M here if you want to support AMD SFH. If unsure, say N. + +endmenu diff --git a/drivers/hid/amd-sfh-hid/Makefile b/drivers/hid/amd-sfh-hid/Makefile new file mode 100644 index 000000000000..a163c7f62b32 --- /dev/null +++ b/drivers/hid/amd-sfh-hid/Makefile @@ -0,0 +1,15 @@ +# SPDX-License-Identifier: GPL-2.0-or-later +# +# Makefile - AMD SFH HID drivers +# Copyright (c) 2019-2020, Advanced Micro Devices, Inc. +# +# + +ccflags-m := -Werror + obj-$(CONFIG_AMD_SFH_HID) +=amd-sfhtp-hid.o + amd-sfhtp-hid-objs := amdsfh_hid.o + amd-sfhtp-hid-objs+= amdsfh_hid_client.o + amd-sfhtp-hid-objs+= amd_mp2_pcie.o + amd-sfhtp-hid-objs+= hid_descriptor/amd_sfh_hid_descriptor.o + +ccflags-y += -I$(srctree)/$(src)/ diff --git a/drivers/hid/amd-sfh-hid/amd_mp2_pcie.c b/drivers/hid/amd-sfh-hid/amd_mp2_pcie.c new file mode 100644 index 000000000000..cdd480c287db --- /dev/null +++ b/drivers/hid/amd-sfh-hid/amd_mp2_pcie.c @@ -0,0 +1,162 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * AMD MP2 PCIe communication driver + * Copyright 2020 Advanced Micro Devices, Inc. + * + * Authors: Shyam Sundar S K + * Sandeep Singh + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "amd_mp2_pcie.h" + +#define DRIVER_NAME "pcie_mp2_amd" +#define DRIVER_DESC "AMD(R) PCIe MP2 Communication Driver" + +#define ACEL_EN BIT(accel_idx) +#define GYRO_EN BIT(gyro_idx) +#define MAGNO_EN BIT(mag_idx) +#define ALS_EN BIT(als_idx) + +void amd_start_sensor(struct amd_mp2_dev *privdata, struct amd_mp2_sensor_info info) +{ + union sfh_cmd_param cmd_param; + union sfh_cmd_base cmd_base; + + /* fill up command register */ + cmd_base.ul = 0; + cmd_base.s.cmd_id = enable_sensor; + cmd_base.s.period = info.period; + cmd_base.s.sensor_id = info.sensor_idx; + + /* fill up command param register */ + cmd_param.ul = 0; + cmd_param.s.buf_layout = 1; + cmd_param.s.buf_length = 16; + + writeq(info.phys_address, privdata->mmio + AMD_C2P_MSG2); + writel(cmd_param.ul, privdata->mmio + AMD_C2P_MSG1); + writel(cmd_base.ul, privdata->mmio + AMD_C2P_MSG0); +} + +void amd_stop_sensor(struct amd_mp2_dev *privdata, u16 sensor_idx) +{ + union sfh_cmd_base cmd_base; + + /* fill up command register */ + cmd_base.ul = 0; + cmd_base.s.cmd_id = disable_sensor; + cmd_base.s.period = 0; + cmd_base.s.sensor_id = sensor_idx; + + writeq(0x0, privdata->mmio + AMD_C2P_MSG2); + writel(cmd_base.ul, privdata->mmio + AMD_C2P_MSG0); +} + +void amd_stop_all_sensors(struct amd_mp2_dev *privdata) +{ + union sfh_cmd_base cmd_base; + + /* fill up command register */ + cmd_base.ul = 0; + cmd_base.s.cmd_id = stop_all_sensors; + cmd_base.s.period = 0; + cmd_base.s.sensor_id = 0; + + writel(cmd_base.ul, privdata->mmio + AMD_C2P_MSG0); +} + +int amd_mp2_get_sensor_num(struct amd_mp2_dev *privdata, u8 *sensor_id) +{ + int activestatus, num_of_sensors = 0; + + if (!sensor_id) + return -EINVAL; + + privdata->activecontrolstatus = readl(privdata->mmio + AMD_P2C_MSG3); + activestatus = privdata->activecontrolstatus >> 4; + if (ACEL_EN & activestatus) + sensor_id[num_of_sensors++] = accel_idx; + + if (GYRO_EN & activestatus) + sensor_id[num_of_sensors++] = gyro_idx; + + if (MAGNO_EN & activestatus) + sensor_id[num_of_sensors++] = mag_idx; + + if (ALS_EN & activestatus) + sensor_id[num_of_sensors++] = als_idx; + + return num_of_sensors; +} + +static int amd_mp2_pci_init(struct amd_mp2_dev *privdata, struct pci_dev *pdev) +{ + int rc; + + pci_set_drvdata(pdev, privdata); + pcim_enable_device(pdev); + pcim_iomap_regions(pdev, BIT(2), DRIVER_NAME); + + privdata->mmio = pcim_iomap_table(pdev)[2]; + pci_set_master(pdev); + + rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); + if (rc) + rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); + return rc; +} + +static int amd_mp2_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) +{ + struct amd_mp2_dev *privdata; + int rc; + + privdata = devm_kzalloc(&pdev->dev, sizeof(*privdata), GFP_KERNEL); + if (!privdata) + return -ENOMEM; + privdata->pdev = pdev; + rc = amd_mp2_pci_init(privdata, pdev); + if (rc) + return rc; + rc = amd_sfh_hid_client_init(privdata); + if (rc) + return rc; + return 0; +} + +static void amd_mp2_pci_remove(struct pci_dev *pdev) +{ + struct amd_mp2_dev *privdata = pci_get_drvdata(pdev); + + amd_sfh_hid_client_deinit(privdata); + amd_stop_all_sensors(privdata); +} + +static const struct pci_device_id amd_mp2_pci_tbl[] = { + { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_MP2) }, + {}, +}; +MODULE_DEVICE_TABLE(pci, amd_mp2_pci_tbl); + +static struct pci_driver amd_mp2_pci_driver = { + .name = DRIVER_NAME, + .id_table = amd_mp2_pci_tbl, + .probe = amd_mp2_pci_probe, + .remove = amd_mp2_pci_remove, +}; +module_pci_driver(amd_mp2_pci_driver); + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_AUTHOR("Shyam Sundar S K "); +MODULE_AUTHOR("Sandeep Singh "); diff --git a/drivers/hid/amd-sfh-hid/amd_mp2_pcie.h b/drivers/hid/amd-sfh-hid/amd_mp2_pcie.h new file mode 100644 index 000000000000..a4ef604c4fe8 --- /dev/null +++ b/drivers/hid/amd-sfh-hid/amd_mp2_pcie.h @@ -0,0 +1,83 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * AMD MP2 PCIe communication driver + * Copyright 2020 Advanced Micro Devices, Inc. + * Authors: Shyam Sundar S K + * Sandeep Singh + */ + +#ifndef PCIE_MP2_AMD_H +#define PCIE_MP2_AMD_H + +#include +#include + +#define PCI_DEVICE_ID_AMD_MP2 0x15E4 + +/* MP2 C2P Message Registers */ +#define AMD_C2P_MSG0 0x10500 +#define AMD_C2P_MSG1 0x10504 +#define AMD_C2P_MSG2 0x10508 + +/* MP2 P2C Message Registers */ +#define AMD_P2C_MSG3 0x1068C /* Supported Sensors info */ + +/* SFH Command register */ +union sfh_cmd_base { + u32 ul; + struct { + u32 cmd_id : 8; + u32 sensor_id : 8; + u32 period : 16; + } s; +}; + +union sfh_cmd_param { + u32 ul; + struct { + u32 buf_layout : 2; + u32 buf_length : 6; + u32 rsvd : 24; + } s; +}; + +struct sfh_cmd_reg { + union sfh_cmd_base cmd_base; + union sfh_cmd_param cmd_param; + phys_addr_t phys_addr; +}; + +enum command_id { + enable_sensor = 1, + disable_sensor = 2, + stop_all_sensors = 8, + invalid_cmd = 0xf +}; + +enum sensor_idx { + accel_idx = 0, + gyro_idx = 1, + mag_idx = 2, + als_idx = 19 +}; + +struct amd_mp2_dev { + struct pci_dev *pdev; + struct amdtp_cl_data *cl_data; + void __iomem *mmio; + u32 activecontrolstatus; +}; + +struct amd_mp2_sensor_info { + u8 sensor_idx; + u32 period; + phys_addr_t phys_address; +}; + +void amd_start_sensor(struct amd_mp2_dev *privdata, struct amd_mp2_sensor_info info); +void amd_stop_sensor(struct amd_mp2_dev *privdata, u16 sensor_idx); +void amd_stop_all_sensors(struct amd_mp2_dev *privdata); +int amd_mp2_get_sensor_num(struct amd_mp2_dev *privdata, u8 *sensor_id); +int amd_sfh_hid_client_init(struct amd_mp2_dev *privdata); +int amd_sfh_hid_client_deinit(struct amd_mp2_dev *privdata); +#endif