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| author | Maxime Ripard <maxime@cerno.tech> | 2020-09-03 10:01:05 +0200 |
|---|---|---|
| committer | Maxime Ripard <maxime@cerno.tech> | 2020-09-07 18:04:26 +0200 |
| commit | 29bbb93080a964db806e18acde3540278581f68d (patch) | |
| tree | 6e9abe63f8b876caa42a25ad485e1fe2035226ca /drivers/gpu/drm/vc4/vc4_drv.h | |
| parent | 50e9d6cb5dbfec87b39f7d6f270841328f9ba555 (diff) | |
| download | lwn-29bbb93080a964db806e18acde3540278581f68d.tar.gz lwn-29bbb93080a964db806e18acde3540278581f68d.zip | |
drm/vc4: hvs: Introduce a function to get the assigned FIFO
At boot time, if we detect that a pixelvalve has been enabled, we need to
be able to retrieve the HVS channel it has been assigned to so that we can
disable that channel too. Let's create that function that returns the FIFO
or an error from a given output.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Tested-by: Chanwoo Choi <cw00.choi@samsung.com>
Tested-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/178192d90874559b8386139f2226e773347729fc.1599120059.git-series.maxime@cerno.tech
Diffstat (limited to 'drivers/gpu/drm/vc4/vc4_drv.h')
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_drv.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h index 554c2e29b23d..860be019d8e3 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.h +++ b/drivers/gpu/drm/vc4/vc4_drv.h @@ -908,6 +908,7 @@ void vc4_irq_reset(struct drm_device *dev); /* vc4_hvs.c */ extern struct platform_driver vc4_hvs_driver; void vc4_hvs_stop_channel(struct drm_device *dev, unsigned int output); +int vc4_hvs_get_fifo_from_output(struct drm_device *dev, unsigned int output); int vc4_hvs_atomic_check(struct drm_crtc *crtc, struct drm_crtc_state *state); void vc4_hvs_atomic_enable(struct drm_crtc *crtc, struct drm_crtc_state *old_state); void vc4_hvs_atomic_disable(struct drm_crtc *crtc, struct drm_crtc_state *old_state); |