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| author | Rishabh Bhatnagar <rishabhb@codeaurora.org> | 2020-06-24 04:23:28 +0200 |
|---|---|---|
| committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2020-07-09 06:45:17 +0200 |
| commit | 62495d778439a4e47571293511a785cba754874c (patch) | |
| tree | 5def48ebf9d91f001083eff61e6f3195b1e8538e /drivers/remoteproc | |
| parent | remoteproc: qcom: Add per subsystem SSR notification (diff) | |
| download | linux-62495d778439a4e47571293511a785cba754874c.tar.xz linux-62495d778439a4e47571293511a785cba754874c.zip | |
remoteproc: qcom: Add notification types to SSR
The SSR subdevice only adds callback for the unprepare event. Add callbacks
for prepare, start and prepare events. The client driver for a particular
remoteproc might be interested in knowing the status of the remoteproc
while undergoing SSR, not just when the remoteproc has finished shutting
down.
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Siddharth Gupta <sidgup@codeaurora.org>
Signed-off-by: Rishabh Bhatnagar <rishabhb@codeaurora.org>
Link: https://lore.kernel.org/r/1592965408-16908-3-git-send-email-rishabhb@codeaurora.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'drivers/remoteproc')
| -rw-r--r-- | drivers/remoteproc/qcom_common.c | 44 |
1 files changed, 43 insertions, 1 deletions
diff --git a/drivers/remoteproc/qcom_common.c b/drivers/remoteproc/qcom_common.c index 48b399af9c83..2f45f0c79914 100644 --- a/drivers/remoteproc/qcom_common.c +++ b/drivers/remoteproc/qcom_common.c @@ -265,6 +265,44 @@ int qcom_unregister_ssr_notifier(void *notify, struct notifier_block *nb) } EXPORT_SYMBOL_GPL(qcom_unregister_ssr_notifier); +static int ssr_notify_prepare(struct rproc_subdev *subdev) +{ + struct qcom_rproc_ssr *ssr = to_ssr_subdev(subdev); + struct qcom_ssr_notify_data data = { + .name = ssr->info->name, + .crashed = false, + }; + + srcu_notifier_call_chain(&ssr->info->notifier_list, + QCOM_SSR_BEFORE_POWERUP, &data); + return 0; +} + +static int ssr_notify_start(struct rproc_subdev *subdev) +{ + struct qcom_rproc_ssr *ssr = to_ssr_subdev(subdev); + struct qcom_ssr_notify_data data = { + .name = ssr->info->name, + .crashed = false, + }; + + srcu_notifier_call_chain(&ssr->info->notifier_list, + QCOM_SSR_AFTER_POWERUP, &data); + return 0; +} + +static void ssr_notify_stop(struct rproc_subdev *subdev, bool crashed) +{ + struct qcom_rproc_ssr *ssr = to_ssr_subdev(subdev); + struct qcom_ssr_notify_data data = { + .name = ssr->info->name, + .crashed = crashed, + }; + + srcu_notifier_call_chain(&ssr->info->notifier_list, + QCOM_SSR_BEFORE_SHUTDOWN, &data); +} + static void ssr_notify_unprepare(struct rproc_subdev *subdev) { struct qcom_rproc_ssr *ssr = to_ssr_subdev(subdev); @@ -273,7 +311,8 @@ static void ssr_notify_unprepare(struct rproc_subdev *subdev) .crashed = false, }; - srcu_notifier_call_chain(&ssr->info->notifier_list, 0, &data); + srcu_notifier_call_chain(&ssr->info->notifier_list, + QCOM_SSR_AFTER_SHUTDOWN, &data); } /** @@ -298,6 +337,9 @@ void qcom_add_ssr_subdev(struct rproc *rproc, struct qcom_rproc_ssr *ssr, } ssr->info = info; + ssr->subdev.prepare = ssr_notify_prepare; + ssr->subdev.start = ssr_notify_start; + ssr->subdev.stop = ssr_notify_stop; ssr->subdev.unprepare = ssr_notify_unprepare; rproc_add_subdev(rproc, &ssr->subdev); |