forked from Minki/linux
46cce6dac3
The tcon provides part of the functionality of the crtc, and also provides the device node for the output port of the crtc. To be able to use drm_of_find_possible_crtcs(), all crtc must be initialized before any downstream encoders. The other part of the crtc is the display backend. The Rockchip DRM driver does this by first binding all vops, which is their crtc, and this step also creates the crtc objects. Then all remaining hardware components are bound. With the Allwinner display pipeline, we have multiple components comprising the crtc, and varying depths of the display pipeline. Since components are added with a depth first search of the of_graph, we can initialize the crtc object within the tcon bind function. Since the backend precedes the tcon, and the backends cannot be muxed or switched around, we can be sure that the associated backend is already initialized. This patch also moves the crtc pointer from the main drm_device data to the tcon device data. Besides the crtc callbacks, the crtc structure is only used within the tcon driver to signal vblank events from its interrupt handler. As the crtc and layer bits are now called from the tcon bits, we must move them from the sun4i-drm module to the sun4i-tcon module to avoid circular dependencies between the two modules. This is because sun4i-drm also calls into sun4i-tcon. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> |
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| .. | ||
| Kconfig | ||
| Makefile | ||
| sun4i_backend.c | ||
| sun4i_backend.h | ||
| sun4i_crtc.c | ||
| sun4i_crtc.h | ||
| sun4i_dotclock.c | ||
| sun4i_dotclock.h | ||
| sun4i_drv.c | ||
| sun4i_drv.h | ||
| sun4i_framebuffer.c | ||
| sun4i_framebuffer.h | ||
| sun4i_layer.c | ||
| sun4i_layer.h | ||
| sun4i_rgb.c | ||
| sun4i_rgb.h | ||
| sun4i_tcon.c | ||
| sun4i_tcon.h | ||
| sun4i_tv.c | ||
| sun6i_drc.c | ||