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Tue, 21 Jul 2020 15:20:39 +0000 From: franck.lenormand@oss.nxp.com To: shawnguo@kernel.org, s.hauer@pengutronix.de, festevam@gmail.com Cc: franck.lenormand@oss.nxp.com, kernel@pengutronix.de, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-imx@nxp.com, aisheng.dong@nxp.com, abel.vesa@nxp.com, Anson.Huang@nxp.com, linux@rempel-privat.de, leonard.crestez@nxp.com, daniel.baluta@nxp.com, qiangqing.zhang@nxp.com, peng.fan@nxp.com Subject: [PATCH v2 2/5] firmware: imx: scu-irq: Add API to retrieve status of IRQ Date: Tue, 21 Jul 2020 17:20:32 +0200 Message-Id: <1595344835-67746-3-git-send-email-franck.lenormand@oss.nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1595344835-67746-1-git-send-email-franck.lenormand@oss.nxp.com> References: <1595344835-67746-1-git-send-email-franck.lenormand@oss.nxp.com> Content-Type: text/plain X-ClientProxiedBy: AM0PR10CA0100.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:208:e6::17) To AM4PR0401MB2401.eurprd04.prod.outlook.com (2603:10a6:200:47::26) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from SOPDPUATS05.ea.freescale.net (81.1.10.98) by AM0PR10CA0100.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:208:e6::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.3216.21 via Frontend Transport; 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X-MS-Exchange-AntiSpam-MessageData: PzY/h5EZjQS8TFX4SxQR1SoUhOsVGbrq6ubY+SWG9mGHIgB2HRA2MtPlGuHJS1ksosecGqmeyjdEj7O/9NYAf+qW4aRi+8F5gEaCROSnzxbD2E7VV/NGEzT6JQ/xe7SIK1w2BzIzK7FJrov+i+csIJw3/LMpTVC6Dh4S/qWcV9I0SE4hCm7PL6uwo94k3/BOsV1qhmuiOz4TA96dXt47kPq+wlWh83QSEpy21zVL8KpTA1LqlqI1lHnXj8T/db6rYTX6yYgQddxBJpaGCzEmIqDvu0N0bQHmvge+fWX/H34kcJbDNHcMbFe5lWc9iuw+ZnV96hzUv1zat0idIEYRa4Ud7sADinpcYYp6d5e7++N/k2FOV7GgUVSo2BD6XrjYErHnEKTcgcKEYGZETF6kL2GXDFxXIPiEXGhOmLgAhgZYkAxnrSjsVxugCxwgTwEssZP9rr6PB4HFOwvHbYvsTkMWza5FfrKJB9BYIJce4X4= X-OriginatorOrg: oss.nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: affcb39f-3f6d-4aae-65f8-08d82d89a029 X-MS-Exchange-CrossTenant-AuthSource: AM4PR0401MB2401.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Jul 2020 15:20:39.5871 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: UeguVWufMgbJa3wKl3CSeJwZQgKu8ZhQKiK0okKne65HwdmkC16vFmdESJkS33vz9IDHEuNfzyVaybqcSHSgA7IojKlaJBAgEVR99frihrA= X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB6212 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Franck LENORMAND This patch adds the API to retrieve the status of an IRQ. It also adds values used to process SECVIO IRQ from the SCU. Signed-off-by: Franck LENORMAND --- drivers/firmware/imx/imx-scu-irq.c | 37 ++++++++++++++++++++++++++++++++++++- include/linux/firmware/imx/sci.h | 4 ++++ 2 files changed, 40 insertions(+), 1 deletion(-) diff --git a/drivers/firmware/imx/imx-scu-irq.c b/drivers/firmware/imx/imx-scu-irq.c index d9dcc20..d31d600 100644 --- a/drivers/firmware/imx/imx-scu-irq.c +++ b/drivers/firmware/imx/imx-scu-irq.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0+ /* - * Copyright 2019 NXP + * Copyright 2019-2020 NXP * * Implementation of the SCU IRQ functions using MU. * @@ -97,6 +97,41 @@ static void imx_scu_irq_work_handler(struct work_struct *work) } } +/** + * imx_scu_irq_get_status() - Get the status of the IRQs of a group + * + * @group: The group of IRQ to retrieve status + * @irq_status: Status of the IRQs retrieved + * + * Return: + * 0 - OK + * < 0 - error. + */ +int imx_scu_irq_get_status(u8 group, u32 *irq_status) +{ + struct imx_sc_msg_irq_get_status msg; + struct imx_sc_rpc_msg *hdr = &msg.hdr; + int ret; + + hdr->ver = IMX_SC_RPC_VERSION; + hdr->svc = IMX_SC_RPC_SVC_IRQ; + hdr->func = IMX_SC_IRQ_FUNC_STATUS; + hdr->size = 2; + + msg.data.req.resource = mu_resource_id; + msg.data.req.group = group; + + ret = imx_scu_call_rpc(imx_sc_irq_ipc_handle, &msg, true); + if (ret) + return ret; + + if (irq_status) + *irq_status = msg.data.resp.status; + + return 0; +} +EXPORT_SYMBOL(imx_scu_irq_get_status); + int imx_scu_irq_group_enable(u8 group, u32 mask, u8 enable) { struct imx_sc_msg_irq_enable msg; diff --git a/include/linux/firmware/imx/sci.h b/include/linux/firmware/imx/sci.h index 914dce1..20a16a7 100644 --- a/include/linux/firmware/imx/sci.h +++ b/include/linux/firmware/imx/sci.h @@ -17,9 +17,13 @@ #include #include +#define IMX_SC_IRQ_GROUP_WAKE 3U /* Wakeup interrupts */ +#define IMX_SC_IRQ_SECVIO BIT(6) /* Security violation */ + int imx_scu_enable_general_irq_channel(struct device *dev); int imx_scu_irq_register_notifier(struct notifier_block *nb); int imx_scu_irq_unregister_notifier(struct notifier_block *nb); int imx_scu_irq_group_enable(u8 group, u32 mask, u8 enable); int imx_scu_soc_init(struct device *dev); +int imx_scu_irq_get_status(u8 group, u32 *irq_status); #endif /* _SC_SCI_H */ -- 2.7.4