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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Feb 2023 14:06:22.7142 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a38e0771-9f04-49ce-9640-08db134ba5d4 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT028.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB6591 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Add new function 'of_tegra_bpmp_get()' which can be used by other drivers like MC to get BPMP data without adding any property in respective drivers DT node. Signed-off-by: Sumit Gupta --- drivers/firmware/tegra/bpmp.c | 38 +++++++++++++++++++++++++++++++++++ include/soc/tegra/bpmp.h | 5 +++++ 2 files changed, 43 insertions(+) diff --git a/drivers/firmware/tegra/bpmp.c b/drivers/firmware/tegra/bpmp.c index 042c2043929d..d825067a223a 100644 --- a/drivers/firmware/tegra/bpmp.c +++ b/drivers/firmware/tegra/bpmp.c @@ -39,6 +39,44 @@ channel_to_ops(struct tegra_bpmp_channel *channel) return bpmp->soc->ops; } +struct tegra_bpmp *of_tegra_bpmp_get(void) +{ + struct platform_device *pdev; + struct device_node *bpmp_dev; + struct tegra_bpmp *bpmp; + + /* Check for bpmp device status in DT */ + bpmp_dev = of_find_compatible_node(NULL, NULL, "nvidia,tegra186-bpmp"); + if (!bpmp_dev) { + bpmp = ERR_PTR(-ENODEV); + goto err_out; + } + if (!of_device_is_available(bpmp_dev)) { + bpmp = ERR_PTR(-ENODEV); + goto err_put; + } + + pdev = of_find_device_by_node(bpmp_dev); + if (!pdev) { + bpmp = ERR_PTR(-ENODEV); + goto err_put; + } + + bpmp = platform_get_drvdata(pdev); + if (!bpmp) { + bpmp = ERR_PTR(-EPROBE_DEFER); + put_device(&pdev->dev); + goto err_put; + } + + return bpmp; +err_put: + of_node_put(bpmp_dev); +err_out: + return bpmp; +} +EXPORT_SYMBOL_GPL(of_tegra_bpmp_get); + struct tegra_bpmp *tegra_bpmp_get(struct device *dev) { struct platform_device *pdev; diff --git a/include/soc/tegra/bpmp.h b/include/soc/tegra/bpmp.h index 5842e38bb288..9fd3aa9e69bb 100644 --- a/include/soc/tegra/bpmp.h +++ b/include/soc/tegra/bpmp.h @@ -120,6 +120,7 @@ struct tegra_bpmp_message { }; #if IS_ENABLED(CONFIG_TEGRA_BPMP) +struct tegra_bpmp *of_tegra_bpmp_get(void); struct tegra_bpmp *tegra_bpmp_get(struct device *dev); void tegra_bpmp_put(struct tegra_bpmp *bpmp); int tegra_bpmp_transfer_atomic(struct tegra_bpmp *bpmp, @@ -135,6 +136,10 @@ void tegra_bpmp_free_mrq(struct tegra_bpmp *bpmp, unsigned int mrq, void *data); bool tegra_bpmp_mrq_is_supported(struct tegra_bpmp *bpmp, unsigned int mrq); #else +static inline struct tegra_bpmp *of_tegra_bpmp_get(void) +{ + return ERR_PTR(-EOPNOTSUPP); +} static inline struct tegra_bpmp *tegra_bpmp_get(struct device *dev) { return ERR_PTR(-ENOTSUPP);