media: amphion: support for reloading module

As there is no interface to power off vpu core.
So it need to boot from cold on first load.
but on the second load, driver need to restore the status
instead of booting.

Signed-off-by: Ming Qian <ming.qian@nxp.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

diff --git a/drivers/media/platform/amphion/vpu_core.c b/drivers/media/platform/amphion/vpu_core.c
index 68ad183..3cca7ae 100644 (file)
--- a/drivers/media/platform/amphion/vpu_core.c
+++ b/drivers/media/platform/amphion/vpu_core.c
@@ -257,14 +257,8 @@ static int vpu_core_register(struct device *dev, struct vpu_core *core)
        }
 
        list_add_tail(&core->list, &vpu->cores);
-
        vpu_core_get_vpu(core);
 
-       if (vpu_iface_get_power_state(core))
-               ret = vpu_core_restore(core);
-       if (ret)
-               goto error;
-
        return 0;
 error:
        if (core->msg_buffer) {
@@ -362,7 +356,10 @@ struct vpu_core *vpu_request_core(struct vpu_dev *vpu, enum vpu_core_type type)
        pm_runtime_resume_and_get(core->dev);
 
        if (core->state == VPU_CORE_DEINIT) {
-               ret = vpu_core_boot(core, true);
+               if (vpu_iface_get_power_state(core))
+                       ret = vpu_core_restore(core);
+               else
+                       ret = vpu_core_boot(core, true);
                if (ret) {
                        pm_runtime_put_sync(core->dev);
                        mutex_unlock(&core->lock);