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firmware: cs_dsp: Add pre_stop callback 

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@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220722094851.92521-1-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
pull/31/merge
Charles Keepax 2022-07-22 10:48:50 +01:00 committed by Mark Brown
parent 90023c6ede
commit dea9977335
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 6 additions and 1 deletions
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3
drivers/firmware/cirrus/cs_dsp.c
View File

@ -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)

4
include/linux/firmware/cirrus/cs_dsp.h
View File

@ -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);
};