kernel/drivers/gpu/drm/armada/armada_fbdev.c, branch linux-4.1.y

drm: Introduce drm_fb_helper_prepare()

2014-07-08T01:31:28Z

To implement hotplug detection in a race-free manner, drivers must call drm_kms_helper_poll_init() before hotplug events can be triggered. Such events can be triggered right after any of the encoders or connectors are initialized. At the same time, if the drm_fb_helper_hotplug_event() helper is used by a driver, then the poll helper requires some parts of the FB helper to be initialized to prevent a crash. At the same time, drm_fb_helper_init() requires information that is not necessarily available at such an early stage (number of CRTCs and connectors), so it cannot be used yet. Add a new helper, drm_fb_helper_prepare(), that initializes the bare minimum needed to allow drm_kms_helper_poll_init() to execute and any subsequent hotplug events to be processed properly. Reviewed-by: Daniel Vetter Signed-off-by: Thierry Reding Signed-off-by: Dave Airlie

drm: Constify struct drm_fb_helper_funcs

2014-07-08T01:31:15Z

There's no need for this to be modifiable. Make it const so that it can be put into the .rodata section. Reviewed-by: Daniel Vetter Signed-off-by: Thierry Reding Acked-by: Russell King Signed-off-by: Dave Airlie

drm: add drm_fb_helper_restore_fbdev_mode_unlocked()

2014-06-05T00:02:40Z

All drm_fb_helper_restore_fbdev_mode() call sites, save one, do the same locking. Simplify this into drm_fb_helper_restore_fbdev_mode_unlocked(). Signed-off-by: Rob Clark Reviewed-by: Daniel Vetter Signed-off-by: Dave Airlie

DRM: Armada: fix printing of phys_addr_t/dma_addr_t

2013-12-10T20:25:15Z

These can be 64-bit quantities, so fix them up appropriately. Reviewed-by: Rob Clark Reviewed-by: Thierry Reding Signed-off-by: Russell King

DRM: Armada: destroy framebuffer after helper

2013-12-10T20:25:12Z

Destroy the framebuffer only after the helper, since the helper may still be referencing the framebufer at this point. Reviewed-by: Rob Clark Reviewed-by: Thierry Reding Signed-off-by: Russell King

DRM: Armada: implement lastclose() for fbhelper

2013-12-10T20:24:02Z

Call drm_fb_helper_restore_fbdev_mode() upon last close so that in the event of the X server crashing, we have some kind of mode restored. Reviewed-by: Rob Clark Reviewed-by: Thierry Reding Signed-off-by: Russell King

DRM: Armada: Add Armada DRM driver

2013-10-12T09:13:40Z

This patch adds support for the pair of LCD controllers on the Marvell Armada 510 SoCs. This driver supports: - multiple contiguous scanout buffers for video and graphics - shm backed cacheable buffer objects for X pixmaps for Vivante GPU acceleration - dual lcd0 and lcd1 crt operation - video overlay on each LCD crt via DRM planes - page flipping of the main scanout buffers - DRM prime for buffer export/import This driver is trivial to extend to other Armada SoCs. Included in this commit is the core driver with no output support; output support is platform and encoder driver dependent. Tested-by: Sebastian Hesselbarth Reviewed-by: Rob Clark Signed-off-by: Russell King