From: Peter Hilber <peter.hilber@opensynergy.com>
To: <linux-arm-kernel@lists.infradead.org>, <devicetree@vger.kernel.org>
Cc: Peter Hilber <peter.hilber@opensynergy.com>,
Rob Herring <robh+dt@kernel.org>, <linux-kernel@vger.kernel.org>,
<sudeep.holla@arm.com>, <souvik.chakravarty@arm.com>,
<alex.bennee@linaro.org>, <jean-philippe@linaro.org>,
<igor.skalkin@opensynergy.com>, <mikhail.golubev@opensynergy.com>,
<anton.yakovlev@opensynergy.com>,
Vasyl Vavrychuk <Vasyl.Vavrychuk@opensynergy.com>,
Andriy Tryshnivskyy <Andriy.Tryshnivskyy@opensynergy.com>,
Cristian Marussi <cristian.marussi@arm.com>
Subject: [RFC PATCH v3 04/12] firmware: arm_scmi: Add optional link_supplier() transport op
Date: Tue, 11 May 2021 02:20:32 +0200 [thread overview]
Message-ID: <20210511002040.802226-5-peter.hilber@opensynergy.com> (raw)
In-Reply-To: <20210511002040.802226-1-peter.hilber@opensynergy.com>
For the scmi-virtio transport, it might not be possible to refer to the
proper virtio device at device tree build time. Therefore, add an op
which will allow scmi-virtio to dynamically link to the proper virtio
device during probe.
Signed-off-by: Peter Hilber <peter.hilber@opensynergy.com>
---
drivers/firmware/arm_scmi/common.h | 2 ++
drivers/firmware/arm_scmi/driver.c | 6 ++++++
2 files changed, 8 insertions(+)
diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h
index 13be8dedcd6b..d60e3c26821d 100644
--- a/drivers/firmware/arm_scmi/common.h
+++ b/drivers/firmware/arm_scmi/common.h
@@ -283,6 +283,7 @@ struct scmi_chan_info {
/**
* struct scmi_transport_ops - Structure representing a SCMI transport ops
*
+ * @link_supplier: Optional callback to add link to a supplier device
* @chan_available: Callback to check if channel is available or not
* @chan_setup: Callback to allocate and setup a channel
* @chan_free: Callback to free a channel
@@ -297,6 +298,7 @@ struct scmi_chan_info {
* @poll_done: Callback to poll transfer status
*/
struct scmi_transport_ops {
+ int (*link_supplier)(struct device *dev);
bool (*chan_available)(struct device *dev, int idx);
int (*chan_setup)(struct scmi_chan_info *cinfo, struct device *dev,
bool tx);
diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index b7271f8fd1c7..df526ff37c6d 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -1434,6 +1434,12 @@ static int scmi_probe(struct platform_device *pdev)
handle->devm_protocol_get = scmi_devm_protocol_get;
handle->devm_protocol_put = scmi_devm_protocol_put;
+ if (desc->ops->link_supplier) {
+ ret = desc->ops->link_supplier(dev);
+ if (ret)
+ return ret;
+ }
+
ret = scmi_txrx_setup(info, dev, SCMI_PROTOCOL_BASE);
if (ret)
return ret;
--
2.25.1
next prev parent reply other threads:[~2021-05-11 0:28 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-11 0:20 [RFC PATCH v3 00/12] firmware: arm_scmi: Add virtio transport Peter Hilber
2021-05-11 0:20 ` [RFC PATCH v3 01/12] firmware: arm_scmi, smccc, mailbox: Make shmem based transports optional Peter Hilber
2021-06-21 4:09 ` Jassi Brar
2021-06-21 8:54 ` Sudeep Holla
2021-06-21 9:01 ` Cristian Marussi
2021-05-11 0:20 ` [RFC PATCH v3 02/12] firmware: arm_scmi: Add transport init/deinit Peter Hilber
2021-05-11 0:20 ` [RFC PATCH v3 03/12] firmware: arm_scmi: Add op to override max message # Peter Hilber
2021-05-11 0:20 ` Peter Hilber [this message]
2021-05-11 0:20 ` [RFC PATCH v3 05/12] firmware: arm_scmi: Add per-device transport private info Peter Hilber
2021-05-11 0:20 ` [RFC PATCH v3 06/12] firmware: arm_scmi: Add is_scmi_protocol_device() Peter Hilber
2021-05-11 0:20 ` [RFC PATCH v3 07/12] firmware: arm_scmi: Add msg_handle to some transport ops Peter Hilber
2021-05-11 0:20 ` [RFC PATCH v3 08/12] firmware: arm_scmi: Add optional drop_message() transport op Peter Hilber
2021-05-11 0:20 ` [RFC PATCH v3 09/12] firmware: arm_scmi: Add message passing abstractions for transports Peter Hilber
2021-05-11 0:20 ` [RFC PATCH v3 10/12] dt-bindings: arm: Add virtio transport for SCMI Peter Hilber
2021-05-17 21:39 ` Rob Herring
2021-05-11 0:20 ` [RFC PATCH v3 11/12] firmware: arm_scmi: Add virtio transport Peter Hilber
2021-05-18 8:08 ` Cristian Marussi
2021-05-26 14:40 ` Cristian Marussi
2021-06-04 9:19 ` Peter Hilber
2021-06-04 11:56 ` Cristian Marussi
2021-06-01 14:53 ` Vincent Guittot
2021-06-02 8:25 ` Peter Hilber
2021-06-02 8:33 ` Cristian Marussi
2021-06-02 8:34 ` Vincent Guittot
2021-05-11 0:20 ` [RFC PATCH v3 12/12] firmware: arm_scmi: Handle races between core and transport Peter Hilber
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