From: Suman Anna <s-anna@ti.com>
To: Bjorn Andersson <bjorn.andersson@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Nishanth Menon <nm@ti.com>, Lokesh Vutla <lokeshvutla@ti.com>,
<linux-remoteproc@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, Suman Anna <s-anna@ti.com>
Subject: [PATCH v5 2/6] remoteproc: Introduce rproc_of_parse_firmware() helper
Date: Tue, 21 Jul 2020 17:36:13 -0500 [thread overview]
Message-ID: <20200721223617.20312-3-s-anna@ti.com> (raw)
In-Reply-To: <20200721223617.20312-1-s-anna@ti.com>
Add a new helper function rproc_of_parse_firmware() to the remoteproc
core that can be used by various remoteproc drivers to look up the
the "firmware-name" property from a rproc device node. This property
is already being used by multiple drivers, so this helper can avoid
repeating equivalent code in remoteproc drivers.
Signed-off-by: Suman Anna <s-anna@ti.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
---
v5: No changes, patch reordered
v4: https://patchwork.kernel.org/patch/11671447/
- No changes
v3: https://patchwork.kernel.org/patch/11602327/
drivers/remoteproc/remoteproc_core.c | 23 +++++++++++++++++++++++
drivers/remoteproc/remoteproc_internal.h | 2 ++
2 files changed, 25 insertions(+)
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 9f04c30c4aaf..c458b218d524 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -1034,6 +1034,29 @@ rproc_of_resm_mem_entry_init(struct device *dev, u32 of_resm_idx, size_t len,
}
EXPORT_SYMBOL(rproc_of_resm_mem_entry_init);
+/**
+ * rproc_of_parse_firmware() - parse and return the firmware-name
+ * @dev: pointer on device struct representing a rproc
+ * @index: index to use for the firmware-name retrieval
+ * @fw_name: pointer to a character string, in which the firmware
+ * name is returned on success and unmodified otherwise.
+ *
+ * This is an OF helper function that parses a device's DT node for
+ * the "firmware-name" property and returns the firmware name pointer
+ * in @fw_name on success.
+ *
+ * Return: 0 on success, or an appropriate failure.
+ */
+int rproc_of_parse_firmware(struct device *dev, int index, const char **fw_name)
+{
+ int ret;
+
+ ret = of_property_read_string_index(dev->of_node, "firmware-name",
+ index, fw_name);
+ return ret ? ret : 0;
+}
+EXPORT_SYMBOL(rproc_of_parse_firmware);
+
/*
* A lookup table for resource handlers. The indices are defined in
* enum fw_resource_type.
diff --git a/drivers/remoteproc/remoteproc_internal.h b/drivers/remoteproc/remoteproc_internal.h
index 4ba7cb59d3e8..e5341e91d2fc 100644
--- a/drivers/remoteproc/remoteproc_internal.h
+++ b/drivers/remoteproc/remoteproc_internal.h
@@ -28,6 +28,8 @@ struct rproc_debug_trace {
void rproc_release(struct kref *kref);
irqreturn_t rproc_vq_interrupt(struct rproc *rproc, int vq_id);
void rproc_vdev_release(struct kref *ref);
+int rproc_of_parse_firmware(struct device *dev, int index,
+ const char **fw_name);
/* from remoteproc_virtio.c */
int rproc_add_virtio_dev(struct rproc_vdev *rvdev, int id);
--
2.26.0
next prev parent reply other threads:[~2020-07-21 22:36 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-21 22:36 [PATCH v5 0/6] TI K3 DSP remoteproc driver for C66x DSPs Suman Anna
2020-07-21 22:36 ` [PATCH v5 1/6] dt-bindings: arm: keystone: Add common TI SCI bindings Suman Anna
2020-07-23 17:02 ` Rob Herring
2020-07-21 22:36 ` Suman Anna [this message]
2020-07-21 22:36 ` [PATCH v5 3/6] remoteproc: k3: Add TI-SCI processor control helper functions Suman Anna
2020-07-21 22:36 ` [PATCH v5 4/6] dt-bindings: remoteproc: Add bindings for C66x DSPs on TI K3 SoCs Suman Anna
2020-07-21 22:36 ` [PATCH v5 5/6] remoteproc: k3-dsp: Add a remoteproc driver of K3 C66x DSPs Suman Anna
2020-07-21 22:36 ` [PATCH v5 6/6] remoteproc: k3-dsp: Add support for L2RAM loading on " Suman Anna
2020-07-29 0:20 ` [PATCH v5 0/6] TI K3 DSP remoteproc driver for " patchwork-bot+linux-remoteproc
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