The code already has a post_stop callback, add a matching pre_stop
callback to the client_ops that is called before execution is stopped.
This callback provides a convenient place for the client code to
communicate with the DSP before it is stopped.
Signed-off-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx>
---
drivers/firmware/cirrus/cs_dsp.c | 3 +++
include/linux/firmware/cirrus/cs_dsp.h | 4 +++-
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/firmware/cirrus/cs_dsp.c b/drivers/firmware/cirrus/cs_dsp.c
index 7dad6f57d9704..b402f841d72cf 100644
--- a/drivers/firmware/cirrus/cs_dsp.c
+++ b/drivers/firmware/cirrus/cs_dsp.c
@@ -2725,6 +2725,9 @@ void cs_dsp_stop(struct cs_dsp *dsp)
mutex_lock(&dsp->pwr_lock);
+ if (dsp->client_ops->pre_stop)
+ dsp->client_ops->pre_stop(dsp);
+
dsp->running = false;
if (dsp->ops->stop_core)
diff --git a/include/linux/firmware/cirrus/cs_dsp.h b/include/linux/firmware/cirrus/cs_dsp.h
index 30055706cce21..6ab230218df0e 100644
--- a/include/linux/firmware/cirrus/cs_dsp.h
+++ b/include/linux/firmware/cirrus/cs_dsp.h
@@ -189,7 +189,8 @@ struct cs_dsp {
* @control_remove: Called under the pwr_lock when a control is destroyed
* @pre_run: Called under the pwr_lock by cs_dsp_run() before the core is started
* @post_run: Called under the pwr_lock by cs_dsp_run() after the core is started
- * @post_stop: Called under the pwr_lock by cs_dsp_stop()
+ * @pre_stop: Called under the pwr_lock by cs_dsp_stop() before the core is stopped
+ * @post_stop: Called under the pwr_lock by cs_dsp_stop() after the core is stopped
* @watchdog_expired: Called when a watchdog expiry is detected
*
* These callbacks give the cs_dsp client an opportunity to respond to events
@@ -200,6 +201,7 @@ struct cs_dsp_client_ops {
void (*control_remove)(struct cs_dsp_coeff_ctl *ctl);
int (*pre_run)(struct cs_dsp *dsp);
int (*post_run)(struct cs_dsp *dsp);
+ void (*pre_stop)(struct cs_dsp *dsp);
void (*post_stop)(struct cs_dsp *dsp);
void (*watchdog_expired)(struct cs_dsp *dsp);
};
--
2.30.2
