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remoteproc: Add prepare and unprepare ops

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On some SoC architecture, it is needed to enable HW like
clock, bus, regulator, memory region... before loading
co-processor firmware.

This patch introduces prepare and unprepare ops to execute
platform specific function before firmware loading and after
stop execution.

Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
Signed-off-by: Suman Anna <s-anna@ti.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20200417002036.24359-2-s-anna@ti.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Loic Pallardy 2020-04-16 19:20:35 -05:00 • committed by Bjorn Andersson
parent e29ff72b77
commit 33467ac3c8
3 changed files with 34 additions and 1 deletions
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4
include/linux/remoteproc.h
View file

@ -355,6 +355,8 @@ enum rsc_handling_status {
/**
* struct rproc_ops - platform-specific device handlers
* @prepare: prepare device for code loading
* @unprepare: unprepare device after stop
* @start: power on the device and boot it
* @stop: power off the device
* @kick: kick a virtqueue (virtqueue id given as a parameter)
@ -373,6 +375,8 @@ enum rsc_handling_status {
* panic at least the returned number of milliseconds
*/
struct rproc_ops {
int (*prepare)(struct rproc *rproc);
int (*unprepare)(struct rproc *rproc);
int (*start)(struct rproc *rproc);
int (*stop)(struct rproc *rproc);
void (*kick)(struct rproc *rproc, int vqid);