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From:   Mathieu Poirier <mathieu.poirier@linaro.org>
To:     bjorn.andersson@linaro.org, ohad@wizery.com
Cc:     linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 03/13] remoteproc: Add new RPROC_ATTACHED state
Date:   Wed, 26 Aug 2020 10:45:19 -0600
Message-Id: <20200826164529.224476-4-mathieu.poirier@linaro.org>
In-Reply-To: <20200826164529.224476-1-mathieu.poirier@linaro.org>
References: <20200826164529.224476-1-mathieu.poirier@linaro.org>
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Add a new RPROC_ATTACHED state to take into account scenarios
where the remoteproc core needs to attach to a remote processor
that is booted by another entity.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
---
 drivers/remoteproc/remoteproc_sysfs.c | 1 +
 include/linux/remoteproc.h            | 7 +++++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/remoteproc/remoteproc_sysfs.c b/drivers/remoteproc/remoteproc_sysfs.c
index eea514cec50e..2d575e6c9eb8 100644
--- a/drivers/remoteproc/remoteproc_sysfs.c
+++ b/drivers/remoteproc/remoteproc_sysfs.c
@@ -84,6 +84,7 @@ static const char * const rproc_state_string[] = {
 	[RPROC_RUNNING]		= "running",
 	[RPROC_CRASHED]		= "crashed",
 	[RPROC_DELETED]		= "deleted",
+	[RPROC_ATTACHED]	= "attached",
 	[RPROC_DETACHED]	= "detached",
 	[RPROC_LAST]		= "invalid",
 };
diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
index 2fa68bf5aa4f..4e107615121a 100644
--- a/include/linux/remoteproc.h
+++ b/include/linux/remoteproc.h
@@ -403,6 +403,8 @@ struct rproc_ops {
  * @RPROC_RUNNING:	device is up and running
  * @RPROC_CRASHED:	device has crashed; need to start recovery
  * @RPROC_DELETED:	device is deleted
+ * @RPROC_ATTACHED:	device has been booted by another entity and the core
+ *			has attached to it
  * @RPROC_DETACHED:	device has been booted by another entity and waiting
  *			for the core to attach to it
  * @RPROC_LAST:		just keep this one at the end
@@ -419,8 +421,9 @@ enum rproc_state {
 	RPROC_RUNNING	= 2,
 	RPROC_CRASHED	= 3,
 	RPROC_DELETED	= 4,
-	RPROC_DETACHED	= 5,
-	RPROC_LAST	= 6,
+	RPROC_ATTACHED	= 5,
+	RPROC_DETACHED	= 6,
+	RPROC_LAST	= 7,
 };
 
 /**
-- 
2.25.1