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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,
        loic.pallardy@st.com, arnaud.pouliquen@st.com, s-anna@ti.com
Subject: [PATCH v4 1/9] remoteproc: Add new RPROC_DETACHED state
Date:   Mon,  1 Jun 2020 11:51:31 -0600
Message-Id: <20200601175139.22097-2-mathieu.poirier@linaro.org>
In-Reply-To: <20200601175139.22097-1-mathieu.poirier@linaro.org>
References: <20200601175139.22097-1-mathieu.poirier@linaro.org>
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Add a new RPROC_DETACHED 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            | 5 ++++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/remoteproc/remoteproc_sysfs.c b/drivers/remoteproc/remoteproc_sysfs.c
index 7f8536b73295..8b462c501465 100644
--- a/drivers/remoteproc/remoteproc_sysfs.c
+++ b/drivers/remoteproc/remoteproc_sysfs.c
@@ -71,6 +71,7 @@ static const char * const rproc_state_string[] = {
 	[RPROC_RUNNING]		= "running",
 	[RPROC_CRASHED]		= "crashed",
 	[RPROC_DELETED]		= "deleted",
+	[RPROC_DETACHED]	= "detached",
 	[RPROC_LAST]		= "invalid",
 };
 
diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
index e7b7bab8b235..21182ad2d059 100644
--- a/include/linux/remoteproc.h
+++ b/include/linux/remoteproc.h
@@ -400,6 +400,8 @@ 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_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
  *
  * Please note that the values of these states are used as indices
@@ -414,7 +416,8 @@ enum rproc_state {
 	RPROC_RUNNING	= 2,
 	RPROC_CRASHED	= 3,
 	RPROC_DELETED	= 4,
-	RPROC_LAST	= 5,
+	RPROC_DETACHED	= 5,
+	RPROC_LAST	= 6,
 };
 
 /**
-- 
2.20.1