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From: Mathieu Poirier <mathieu.poirier@linaro.org>
To: ohad@wizery.com, bjorn.andersson@linaro.org, robh+dt@kernel.org
Cc: arnaud.pouliquen@st.com, linux-remoteproc@vger.kernel.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v4 10/17] remoteproc: Add new detach() remoteproc operation
Date: Fri, 18 Dec 2020 10:32:21 -0700	[thread overview]
Message-ID: <20201218173228.2277032-11-mathieu.poirier@linaro.org> (raw)
In-Reply-To: <20201218173228.2277032-1-mathieu.poirier@linaro.org>

Add an new detach() operation in order to support scenarios where
the remoteproc core is going away but the remote processor is
kept operating.  This could be the case when the system is
rebooted or when the platform driver is removed.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
---
 include/linux/remoteproc.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
index 257a5005f93e..9bb34c3eb847 100644
--- a/include/linux/remoteproc.h
+++ b/include/linux/remoteproc.h
@@ -361,6 +361,7 @@ enum rsc_handling_status {
  * @start:	power on the device and boot it
  * @stop:	power off the device
  * @attach:	attach to a device that his already powered up
+ * @detach:	detach from a device, leaving it powered up
  * @kick:	kick a virtqueue (virtqueue id given as a parameter)
  * @da_to_va:	optional platform hook to perform address translations
  * @parse_fw:	parse firmware to extract information (e.g. resource table)
@@ -384,6 +385,7 @@ struct rproc_ops {
 	int (*start)(struct rproc *rproc);
 	int (*stop)(struct rproc *rproc);
 	int (*attach)(struct rproc *rproc);
+	int (*detach)(struct rproc *rproc);
 	void (*kick)(struct rproc *rproc, int vqid);
 	void * (*da_to_va)(struct rproc *rproc, u64 da, size_t len);
 	int (*parse_fw)(struct rproc *rproc, const struct firmware *fw);
-- 
2.25.1


  parent reply	other threads:[~2020-12-18 17:34 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-18 17:32 [PATCH v4 00/17] remoteproc: Add support for detaching a rproc Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 01/17] dt-bindings: remoteproc: Add bindind to support autonomous processors Mathieu Poirier
2021-01-20 15:53   ` Rob Herring
2020-12-18 17:32 ` [PATCH v4 02/17] remoteproc: Re-check state in rproc_shutdown() Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 03/17] remoteproc: Remove useless check in rproc_del() Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 04/17] remoteproc: Rename function rproc_actuate() Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 05/17] remoteproc: Add new get_loaded_rsc_table() remoteproc operation Mathieu Poirier
2021-01-27  8:44   ` Arnaud POULIQUEN
2021-01-29 21:37     ` Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 06/17] remoteproc: stm32: Move resource table setup to rproc_ops Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 07/17] remoteproc: Add new RPROC_ATTACHED state Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 08/17] remoteproc: Properly represent the attached state Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 09/17] remoteproc: Properly deal with a kernel panic when attached Mathieu Poirier
2020-12-18 17:32 ` Mathieu Poirier [this message]
2020-12-18 17:32 ` [PATCH v4 11/17] remoteproc: Introduce function __rproc_detach() Mathieu Poirier
2021-01-27  8:46   ` Arnaud POULIQUEN
2021-01-29 22:17     ` Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 12/17] remoteproc: Introduce function rproc_detach() Mathieu Poirier
2021-01-27  8:50   ` Arnaud POULIQUEN
2021-01-29 22:31     ` Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 13/17] remoteproc: Add return value to function rproc_shutdown() Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 14/17] remoteproc: Properly deal with a stop request when attached Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 15/17] remoteproc: Properly deal with a start " Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 16/17] remoteproc: Properly deal with detach request Mathieu Poirier
2020-12-18 17:32 ` [PATCH v4 17/17] remoteproc: Refactor rproc delete and cdev release path Mathieu Poirier
2021-01-27  8:56   ` Arnaud POULIQUEN
2021-01-27  9:21 ` [PATCH v4 00/17] remoteproc: Add support for detaching a rproc Arnaud POULIQUEN
2021-02-02  0:49   ` Mathieu Poirier
2021-02-02  8:54     ` Arnaud POULIQUEN
2021-02-02 22:42       ` Mathieu Poirier
2021-02-03  7:58         ` Arnaud POULIQUEN
2021-02-08 23:43           ` Mathieu Poirier

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