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| author |   Maxime Ripard <maxime.ripard@free-electrons.com> | 2018-01-22 10:25:23 +0100 |
|---|---|---|
| committer | Maxime Ripard <maxime.ripard@free-electrons.com> | 2018-01-22 15:17:04 +0100 |
| commit | ca07b210bc5c124cc194d0c7b91354c636e36394 (patch) | |
| tree | 500069f174dfd32e386b92a6298aa251f029f9ef /drivers/gpu/drm/sun4i/sun4i_backend.h | |
| parent | drm/sun4i: Add a driver for the display frontend (diff) | |
| download | linux-dev-ca07b210bc5c124cc194d0c7b91354c636e36394.tar.xz linux-dev-ca07b210bc5c124cc194d0c7b91354c636e36394.zip | |
drm/sun4i: backend: Wire in the frontend
Now that we have a driver, we can make use of it. This is done by
adding a flag to our custom plane state that will trigger whether we should
use the frontend on that particular plane or not.
The rest is just plumbing to set up the backend to not perform the DMA but
receive its data from the frontend.
Note that we're still not making any use of the frontend itself, as no one
is setting the flag yet.
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/cdffc25eab2d817820cc78cbd24f1f4b99902014.1516613040.git-series.maxime.ripard@free-electrons.com
Diffstat (limited to 'drivers/gpu/drm/sun4i/sun4i_backend.h')
| -rw-r--r-- | drivers/gpu/drm/sun4i/sun4i_backend.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/sun4i/sun4i_backend.h b/drivers/gpu/drm/sun4i/sun4i_backend.h index ac3cc029f5cd..350a2dbde31a 100644 --- a/drivers/gpu/drm/sun4i/sun4i_backend.h +++ b/drivers/gpu/drm/sun4i/sun4i_backend.h @@ -72,6 +72,7 @@ #define SUN4I_BACKEND_ATTCTL_REG0_LAY_PIPESEL(x) ((x) << 15) #define SUN4I_BACKEND_ATTCTL_REG0_LAY_PRISEL_MASK GENMASK(11, 10) #define SUN4I_BACKEND_ATTCTL_REG0_LAY_PRISEL(x) ((x) << 10) +#define SUN4I_BACKEND_ATTCTL_REG0_LAY_VDOEN BIT(1) #define SUN4I_BACKEND_ATTCTL_REG1(l) (0x8a0 + (0x4 * (l))) #define SUN4I_BACKEND_ATTCTL_REG1_LAY_HSCAFCT GENMASK(15, 14) @@ -145,6 +146,7 @@ struct sun4i_backend { struct sunxi_engine engine; + struct sun4i_frontend *frontend; struct reset_control *reset; @@ -154,6 +156,10 @@ struct sun4i_backend { struct clk *sat_clk; struct reset_control *sat_reset; + + /* Protects against races in the frontend teardown */ + spinlock_t frontend_lock; + bool frontend_teardown; }; static inline struct sun4i_backend * @@ -170,5 +176,7 @@ int sun4i_backend_update_layer_formats(struct sun4i_backend *backend, int layer, struct drm_plane *plane); int sun4i_backend_update_layer_buffer(struct sun4i_backend *backend, int layer, struct drm_plane *plane); +int sun4i_backend_update_layer_frontend(struct sun4i_backend *backend, + int layer, uint32_t in_fmt); #endif /* _SUN4I_BACKEND_H_ */ |