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| author | Chiawen Huang | 2019-01-18 07:07:54 +0100 |
|---|---|---|
| committer | Alex Deucher | 2019-02-06 03:16:23 +0100 |
| commit | ac627caf6b9275a3df4730be3b8637c3bc232979 (patch) | |
| tree | 6d4375f0f5c3f072a597dec186327ac4bcc5a6c2 /drivers/gpu/drm/amd/display/dc/gpio/gpio_service.h | |
| parent | drm/amd/display: 3.2.16 (diff) | |
| download | kernel-qcow2-linux-ac627caf6b9275a3df4730be3b8637c3bc232979.tar.gz kernel-qcow2-linux-ac627caf6b9275a3df4730be3b8637c3bc232979.tar.xz kernel-qcow2-linux-ac627caf6b9275a3df4730be3b8637c3bc232979.zip | |
drm/amd/display: add gpio lock/unlock
[Why]
When querying HPD via GPIO flow,
it will create a new gpio object then free in the end of query.
There is a irql issue for HPD querying at ISR level.
[How]
Therefore, creating the HPD gpio object in dc_link and set it as unlcok in default.
1. reducing unnecessary malloc/free when HPD querying.
2. reducing init GPIO flow.
3. add lock/unlock to prevent multi gpio service running.
Signed-off-by: Chiawen Huang <chiawen.huang@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/gpio/gpio_service.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/gpio/gpio_service.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.h b/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.h index 1d501a43d13b..0c678af75331 100644 --- a/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.h +++ b/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.h @@ -52,4 +52,14 @@ void dal_gpio_service_close( struct gpio_service *service, struct hw_gpio_pin **ptr); +enum gpio_result dal_gpio_service_lock( + struct gpio_service *service, + enum gpio_id id, + uint32_t en); + +enum gpio_result dal_gpio_service_unlock( + struct gpio_service *service, + enum gpio_id id, + uint32_t en); + #endif |