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bed41005e6
This is a modesetting driver for the pl111 CLCD display controller
found on various ARM platforms such as the Versatile Express. The
driver has only been tested on the bcm911360_entphn platform so far,
with PRIME-based buffer sharing between vc4 and clcd.
It reuses the existing devicetree binding, while not using quite as
many of its properties as the fbdev driver does (those are left for
future work).
v2: Nearly complete rewrite by anholt, cutting 2/3 of the code thanks
to DRM core's excellent new helpers.
v3: Don't match pl110 any more, don't attach if we don't have a DRM
panel, use DRM_GEM_CMA_FOPS, update MAINTAINERS, use the simple
display helper, use drm_gem_cma_dumb_create (same as our wrapper).
v4: Change the driver's .name to not clash with fbdev in sysfs, drop
platform alias, drop redundant "drm" in DRM driver name, hook up
.prepare_fb to the CMA helper so that DMA fences should work.
v5: Move register definitions inside the driver directory, fix build
in COMPILE_TEST and !AMBA mode.
v6: Drop TIM2_CLKSEL for now to be consistent with existing DT
bindings, switch back to external register definitions.
Signed-off-by: Tom Cooksey <tom.cooksey@arm.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org> (v5)
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170413031746.12921-2-eric@anholt.net
57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
/*
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*
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* (C) COPYRIGHT 2012-2013 ARM Limited. All rights reserved.
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*
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*
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* Parts of this file were based on sources as follows:
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*
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* Copyright (c) 2006-2008 Intel Corporation
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* Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
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* Copyright (C) 2011 Texas Instruments
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*
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* This program is free software and is provided to you under the terms of the
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* GNU General Public License version 2 as published by the Free Software
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* Foundation, and any use by you of this program is subject to the terms of
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* such GNU licence.
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*
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*/
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#ifndef _PL111_DRM_H_
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#define _PL111_DRM_H_
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#include <drm/drm_gem.h>
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#include <drm/drm_simple_kms_helper.h>
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#define CLCD_IRQ_NEXTBASE_UPDATE BIT(2)
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struct pl111_drm_connector {
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struct drm_connector connector;
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struct drm_panel *panel;
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};
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struct pl111_drm_dev_private {
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struct drm_device *drm;
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struct pl111_drm_connector connector;
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struct drm_simple_display_pipe pipe;
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struct drm_fbdev_cma *fbdev;
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void *regs;
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struct clk *clk;
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};
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#define to_pl111_connector(x) \
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container_of(x, struct pl111_drm_connector, connector)
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int pl111_display_init(struct drm_device *dev);
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int pl111_enable_vblank(struct drm_device *drm, unsigned int crtc);
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void pl111_disable_vblank(struct drm_device *drm, unsigned int crtc);
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irqreturn_t pl111_irq(int irq, void *data);
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int pl111_connector_init(struct drm_device *dev);
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int pl111_encoder_init(struct drm_device *dev);
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int pl111_dumb_create(struct drm_file *file_priv,
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struct drm_device *dev,
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struct drm_mode_create_dumb *args);
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#endif /* _PL111_DRM_H_ */
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