From: Sumit Gupta <sumitg@nvidia.com>
To: <treding@nvidia.com>, <krzysztof.kozlowski@linaro.org>,
<dmitry.osipenko@collabora.com>, <viresh.kumar@linaro.org>,
<rafael@kernel.org>, <jonathanh@nvidia.com>, <robh+dt@kernel.org>,
<lpieralisi@kernel.org>
Cc: <linux-kernel@vger.kernel.org>, <linux-tegra@vger.kernel.org>,
<linux-pm@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-pci@vger.kernel.org>, <mmaddireddy@nvidia.com>,
<kw@linux.com>, <bhelgaas@google.com>, <vidyas@nvidia.com>,
<sanjayc@nvidia.com>, <ksitaraman@nvidia.com>, <ishah@nvidia.com>,
<bbasu@nvidia.com>, <sumitg@nvidia.com>
Subject: [Patch v3 01/11] firmware: tegra: add function to get BPMP data
Date: Mon, 20 Mar 2023 23:54:31 +0530 [thread overview]
Message-ID: <20230320182441.11904-2-sumitg@nvidia.com> (raw)
In-Reply-To: <20230320182441.11904-1-sumitg@nvidia.com>
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 <sumitg@nvidia.com>
---
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);
--
2.17.1
next prev parent reply other threads:[~2023-03-20 18:34 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-20 18:24 [Patch v3 00/11] Tegra234 Memory interconnect support Sumit Gupta
2023-03-20 18:24 ` Sumit Gupta [this message]
2023-03-23 10:08 ` [Patch v3 01/11] firmware: tegra: add function to get BPMP data Thierry Reding
2023-03-23 12:59 ` Sumit Gupta
2023-03-20 18:24 ` [Patch v3 02/11] memory: tegra: add interconnect support for DRAM scaling in Tegra234 Sumit Gupta
2023-03-23 10:14 ` Thierry Reding
2023-03-20 18:24 ` [Patch v3 03/11] memory: tegra: add mc clients for Tegra234 Sumit Gupta
2023-03-20 18:24 ` [Patch v3 04/11] memory: tegra: add software mc clients in Tegra234 Sumit Gupta
2023-03-20 18:24 ` [Patch v3 05/11] dt-bindings: tegra: add icc ids for dummy MC clients Sumit Gupta
2023-03-20 18:24 ` [Patch v3 06/11] arm64: tegra: Add cpu OPP tables and interconnects property Sumit Gupta
2023-03-20 18:24 ` [Patch v3 07/11] cpufreq: tegra194: add OPP support and set bandwidth Sumit Gupta
2023-03-21 7:36 ` kernel test robot
2023-03-21 11:49 ` Sumit Gupta
2023-03-22 17:51 ` Krzysztof Kozlowski
2023-03-23 12:50 ` Sumit Gupta
2023-03-20 18:24 ` [Patch v3 08/11] memory: tegra: make cpu cluster bw request a multiple of mc channels Sumit Gupta
2023-03-20 18:24 ` [Patch v3 09/11] PCI: tegra194: add interconnect support in Tegra234 Sumit Gupta
2023-03-20 18:24 ` [Patch v3 10/11] memory: tegra: handle no BWMGR MRQ support in BPMP Sumit Gupta
2023-03-22 17:50 ` Krzysztof Kozlowski
2023-03-23 9:55 ` Thierry Reding
2023-03-23 9:58 ` Krzysztof Kozlowski
2023-03-23 10:02 ` Thierry Reding
2023-03-23 12:46 ` Sumit Gupta
2023-03-20 18:24 ` [Patch v3 11/11] memory: tegra186-emc: fix interconnect registration race Sumit Gupta
2023-03-22 17:50 ` Krzysztof Kozlowski
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