kernel/linux.git/drivers/gpu/drm/sun4i, branch v4.12.9

Merge tag 'sunxi-drm-for-4.12' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into drm-next

2017-04-20T03:19:34+00:00

Allwinner DRM changes for 4.12 Not any functional changes, but a lot of preliminary rework in order to support multiple display pipelines. * tag 'sunxi-drm-for-4.12' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux: (26 commits) MAINTAINERS: Add sun4i-drm git repo drm/sun4i: Pass pointer for underlying backend into layer init drm/sun4i: Pass pointers for associated backend and tcon into crtc init drm/sun4i: tv: Get tcon and backend pointers from associated crtc drm/sun4i: Use embedded tcon pointer to get the tcon's output port node drm/sun4i: Fix tcon channel 0 comment about backporch = backporch + hsync drm/sun4i: Fix TCON clock and regmap initialization sequence drm/sun4i: Grab reserved memory region drm/sun4i: Add backend and tcon pointers to sun4i_crtc drm/sun4i: Add backend pointer to sun4i_layer drm/sun4i: rgb: Pass tcon pointer when initializing RGB encoder drm/sun4i: tv: Switch to drm_of_find_possible_crtcs drm/sun4i: Drop hardcoded .possible_crtcs values from layers drm/sun4i: Drop primary layer pointer from sun4i_drv drm/sun4i: Initialize crtc from tcon bind function drm/sun4i: Move layers from sun4i_drv to sun4i_crtc drm/sun4i: Add end of list element for sun4i_layers_init's returned list drm/sun4i: Set drm_crtc.port to the underlying TCON's output port node drm/sun4i: Make sunxi_rgb2yuv_coef constant drm/sun4i: Make sun4i_crtc_init return ERR_PTR style error codes ...

drm: convert drivers to use drm_of_find_panel_or_bridge

2017-04-06T21:00:27+00:00

Similar to the previous commit, convert drivers open coding OF graph parsing to use drm_of_find_panel_or_bridge instead. This changes some error messages to debug messages (in the graph core). Graph connections are often "no connects" depending on the particular board, so we want to avoid spurious messages. Plus the kernel is not a DT validator. Signed-off-by: Rob Herring Reviewed-by: Archit Taneja Tested-by: Philipp Zabel Acked-by: Maxime Ripard [seanpaul dropped rockchip changes since they're now obsolete] Signed-off-by: Sean Paul

drm: Create DEFINE_DRM_GEM_CMA_FOPS and roll it out to drivers

2017-03-14T13:38:34+00:00

Less code ftw. This converts all drivers except the tinydrm helper module. That one needs more work, since it gets the THIS_MODULE reference from tinydrm.ko instead of the actual driver module like it should. Probably needs a similar trick like I used here with generating the entire struct with a macro. Cc: Noralf Trønnes Reviewed-by: Sean Paul Reviewed-by: Liviu Dudau Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/20170308141257.12119-24-daniel.vetter@ffwll.ch

drm/sun4i: Pass pointer for underlying backend into layer init

2017-03-09T10:22:22+00:00

sun4i_layer only controls the backend hardware block of the display pipeline. Pass pointers to the underlying backend in the layer init function, instead of trying to fetch it from the drm_device structure. This avoids the headache of trying to figure out which device the layers actually belong to. Signed-off-by: Chen-Yu Tsai Signed-off-by: Maxime Ripard

drm/sun4i: Pass pointers for associated backend and tcon into crtc init

2017-03-09T10:21:52+00:00

sun4i_crtc controls the backend and tcon hardware blocks of the display pipeline. Pass pointers to the underlying devices into the crtc init function, instead of trying to fetch them from the drm_device structure. This avoids the headache of trying to figure out which devices the crtc is actually associated with. Signed-off-by: Chen-Yu Tsai Signed-off-by: Maxime Ripard

drm/sun4i: tv: Get tcon and backend pointers from associated crtc

2017-03-09T10:19:59+00:00

The drm_encoder structure provides us with a pointer to the crtc currently tied to the encoder. Subsequently we can extract the tcon and backend pointers from our crtc structure, instead of getting it directly from the sun4i_drv structure. Signed-off-by: Chen-Yu Tsai Signed-off-by: Maxime Ripard

drm/sun4i: Use embedded tcon pointer to get the tcon's output port node

2017-03-09T10:19:45+00:00

A pointer to the underlying tcon of the crtc was added to the sun4i_crtc structure in "drm/sun4i: Add backend and tcon pointers to sun4i_crtc". However the crtc init function was still using the copy from sun4i_drv to set drm_crtc.port. This was an oversight when the patches were reordered. Switch to using the embedded tcon pointer to get the tcon's ouptut port and assign it to drm_crtc.port. This makes it possible to remove the usage of sun4i_drv completely in subsequent patches. Signed-off-by: Chen-Yu Tsai Signed-off-by: Maxime Ripard

drm/sun4i: Fix tcon channel 0 comment about backporch = backporch + hsync

2017-03-09T10:19:05+00:00

The backporch programmed into the tcon registers is actually the backporch + hsync length from the display timings, as indicated in the interface timing diagrams found in the user manual of the A31 and A33 SoCs. The comments for channel 0 mistakenly describe the discrepancy as TCON backporch = frontporch + hsync. Signed-off-by: Chen-Yu Tsai Signed-off-by: Maxime Ripard

drm/sun4i: Fix TCON clock and regmap initialization sequence

2017-03-09T10:15:53+00:00

The TCON driver calls sun4i_tcon_init_regmap and sun4i_tcon_init_clocks in its bind function. The former creates a regmap and writes to several register to clear its configuration to a known default. The latter initializes various clocks. This includes enabling the bus clock for register access and creating the dotclock. In order for the first step's writes to work, the bus clock must be enabled which is done in the second step. but the dotclock's ops use the regmap created in the first step. Rearrange the function calls such that the clocks are initialized before the regmap, and split out the dot clock creation to after the regmap is initialized. Fixes: 9026e0d122ac ("drm: Add Allwinner A10 Display Engine support") Signed-off-by: Chen-Yu Tsai Signed-off-by: Maxime Ripard

drm/sun4i: Grab reserved memory region

2017-03-07T21:24:02+00:00

Allow to provide an optional memory region to allocate from for our DRM driver. Signed-off-by: Maxime Ripard