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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by CO1NAM11FT061.mail.protection.outlook.com (10.13.175.200) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6156.12 via Frontend Transport; Fri, 3 Mar 2023 16:51:19 +0000 Received: from AUS-LX-MLIMONCI.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.34; Fri, 3 Mar 2023 10:51:17 -0600 From: Mario Limonciello To: =?UTF-8?q?Jan=20D=C4=85bro=C5=9B?= , Grzegorz Bernacki , , , , Jarkko Nikula , Andy Shevchenko , Mika Westerberg CC: Mario Limonciello , , Subject: [PATCH v3 9/9] i2c: designware: Add support for AMDI0020 ACPI ID Date: Fri, 3 Mar 2023 10:50:47 -0600 Message-ID: <20230303165050.2918-10-mario.limonciello@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230303165050.2918-1-mario.limonciello@amd.com> References: <20230303165050.2918-1-mario.limonciello@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1NAM11FT061:EE_|MN2PR12MB4143:EE_ X-MS-Office365-Filtering-Correlation-Id: d9dc94e3-e239-4442-4471-08db1c078319 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 03 Mar 2023 16:51:19.1314 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d9dc94e3-e239-4442-4471-08db1c078319 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT061.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4143 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Cezanne and Skyrim have the same PSP hardware but use a different protocol to negotiate I2C arbitration. To disambiguate this going forward introduce a new ACPI ID to represent the protocol that utilizes a doorbell. Signed-off-by: Mario Limonciello --- v2->v3: * Split from earlier patch to standalone --- drivers/i2c/busses/i2c-designware-amdpsp.c | 5 +++-- drivers/i2c/busses/i2c-designware-platdrv.c | 1 + 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/i2c/busses/i2c-designware-amdpsp.c b/drivers/i2c/busses/i2c-designware-amdpsp.c index 2c671973010d..44b8432458b0 100644 --- a/drivers/i2c/busses/i2c-designware-amdpsp.c +++ b/drivers/i2c/busses/i2c-designware-amdpsp.c @@ -101,11 +101,12 @@ static int psp_send_i2c_req_amdi0019(enum psp_i2c_req_type i2c_req_type) static int psp_send_i2c_req(enum psp_i2c_req_type i2c_req_type) { + const char *hid = acpi_device_hid(ACPI_COMPANION(psp_i2c_dev)); unsigned long start = jiffies; int ret; - /* Use doorbell for Skyrim and mailbox for Cezanne */ - if (boot_cpu_data.x86 == 25 && boot_cpu_data.x86_model == 80) + /* Use doorbell for AMDI0020 and mailbox for AMDI0019 */ + if (!strcmp(hid, "AMDI0019")) ret = psp_send_i2c_req_amdi0019(i2c_req_type); else ret = psp_ring_platform_doorbell(i2c_req_type); diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c index 89ad88c54754..5ca71bda9ac2 100644 --- a/drivers/i2c/busses/i2c-designware-platdrv.c +++ b/drivers/i2c/busses/i2c-designware-platdrv.c @@ -51,6 +51,7 @@ static const struct acpi_device_id dw_i2c_acpi_match[] = { { "AMD0010", ACCESS_INTR_MASK }, { "AMDI0010", ACCESS_INTR_MASK }, { "AMDI0019", ACCESS_INTR_MASK | ARBITRATION_SEMAPHORE }, + { "AMDI0020", ACCESS_INTR_MASK | ARBITRATION_SEMAPHORE }, { "AMDI0510", 0 }, { "APMC0D0F", 0 }, { "HISI02A1", 0 }, -- 2.34.1