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charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251122-imx95-rproc-2025-11-20-v3-2-9ae6ee619a78@nxp.com> References: <20251122-imx95-rproc-2025-11-20-v3-0-9ae6ee619a78@nxp.com> In-Reply-To: <20251122-imx95-rproc-2025-11-20-v3-0-9ae6ee619a78@nxp.com> To: Bjorn Andersson , Mathieu Poirier , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Frank Li , Daniel Baluta Cc: linux-remoteproc@vger.kernel.org, devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Peng Fan X-Mailer: b4 0.14.2 X-ClientProxiedBy: SI1PR02CA0058.apcprd02.prod.outlook.com (2603:1096:4:1f5::9) To PAXPR04MB8459.eurprd04.prod.outlook.com (2603:10a6:102:1da::15) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PAXPR04MB8459:EE_|DUZPR04MB9917:EE_ X-MS-Office365-Filtering-Correlation-Id: d2a75e0c-4467-436f-d3db-08de29624c1e X-MS-Exchange-SharedMailbox-RoutingAgent-Processed: True X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|52116014|376014|366016|7416014|19092799006|38350700014|921020; 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To preserve the const correctness of the static configuration while allowing runtime modification of ops behavior, introduce a new imx_rproc_plat_ops member in struct imx_rproc named `ops`. During initialization, dcfg->ops is assigned to priv->ops. Enable the driver to safely override ops at runtime without affecting the original const configuration. Improve flexibility for platforms that require dynamic operation switching (e.g. i.MX95 Logical Machine ops and CPU ops). Reviewed-by: Frank Li Reviewed-by: Daniel Baluta Signed-off-by: Peng Fan --- drivers/remoteproc/imx_rproc.c | 27 +++++++++++++-------------- 1 file changed, 13 insertions(+), 14 deletions(-) diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c index 02e155e967942d745de4ccd96f9008e4211f9b36..82cb8c7866ccb79061c46068d20= 39f38feebbb3c 100644 --- a/drivers/remoteproc/imx_rproc.c +++ b/drivers/remoteproc/imx_rproc.c @@ -116,6 +116,7 @@ struct imx_rproc { u32 entry; /* cpu start address */ u32 core_index; struct dev_pm_domain_list *pd_list; + const struct imx_rproc_plat_ops *ops; }; =20 static const struct imx_rproc_att imx_rproc_att_imx93[] =3D { @@ -315,7 +316,6 @@ static int imx_rproc_scu_api_start(struct rproc *rproc) static int imx_rproc_start(struct rproc *rproc) { struct imx_rproc *priv =3D rproc->priv; - const struct imx_rproc_dcfg *dcfg =3D priv->dcfg; struct device *dev =3D priv->dev; int ret; =20 @@ -323,10 +323,10 @@ static int imx_rproc_start(struct rproc *rproc) if (ret) return ret; =20 - if (!dcfg->ops || !dcfg->ops->start) + if (!priv->ops || !priv->ops->start) return -EOPNOTSUPP; =20 - ret =3D dcfg->ops->start(rproc); + ret =3D priv->ops->start(rproc); if (ret) dev_err(dev, "Failed to enable remote core!\n"); =20 @@ -372,14 +372,13 @@ static int imx_rproc_scu_api_stop(struct rproc *rproc) static int imx_rproc_stop(struct rproc *rproc) { struct imx_rproc *priv =3D rproc->priv; - const struct imx_rproc_dcfg *dcfg =3D priv->dcfg; struct device *dev =3D priv->dev; int ret; =20 - if (!dcfg->ops || !dcfg->ops->stop) + if (!priv->ops || !priv->ops->stop) return -EOPNOTSUPP; =20 - ret =3D dcfg->ops->stop(rproc); + ret =3D priv->ops->stop(rproc); if (ret) dev_err(dev, "Failed to stop remote core\n"); else @@ -590,12 +589,11 @@ static int imx_rproc_scu_api_detach(struct rproc *rpr= oc) static int imx_rproc_detach(struct rproc *rproc) { struct imx_rproc *priv =3D rproc->priv; - const struct imx_rproc_dcfg *dcfg =3D priv->dcfg; =20 - if (!dcfg->ops || !dcfg->ops->detach) + if (!priv->ops || !priv->ops->detach) return -EOPNOTSUPP; =20 - return dcfg->ops->detach(rproc); + return priv->ops->detach(rproc); } =20 static struct resource_table *imx_rproc_get_loaded_rsc_table(struct rproc = *rproc, size_t *table_sz) @@ -995,18 +993,16 @@ static int imx_rproc_scu_api_detect_mode(struct rproc= *rproc) =20 static int imx_rproc_detect_mode(struct imx_rproc *priv) { - const struct imx_rproc_dcfg *dcfg =3D priv->dcfg; - /* * To i.MX{7,8} ULP, Linux is under control of RTOS, no need - * dcfg->ops or dcfg->ops->detect_mode, it is state RPROC_DETACHED. + * priv->ops or priv->ops->detect_mode, it is state RPROC_DETACHED. */ - if (!dcfg->ops || !dcfg->ops->detect_mode) { + if (!priv->ops || !priv->ops->detect_mode) { priv->rproc->state =3D RPROC_DETACHED; return 0; } =20 - return dcfg->ops->detect_mode(priv->rproc); + return priv->ops->detect_mode(priv->rproc); } =20 static int imx_rproc_sys_off_handler(struct sys_off_data *data) @@ -1056,6 +1052,9 @@ static int imx_rproc_probe(struct platform_device *pd= ev) priv->dcfg =3D dcfg; priv->dev =3D dev; =20 + if (dcfg->ops) + priv->ops =3D dcfg->ops; + dev_set_drvdata(dev, rproc); priv->workqueue =3D create_workqueue(dev_name(dev)); if (!priv->workqueue) { --=20 2.37.1