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We detect and enable the use of the PL110 variant, an earlier incarnation of PL111. The only real difference is that the control and interrupt enable registers have swapped place. The Versatile AB and Versatile PB have a variant inbetween PL110 and PL111, it is PL110 but they have already swapped the two registers so those two need a bit of special handling. Reviewed-by: Eric Anholt <eric@anholt.net> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20170908124709.4758-4-linus.walleij@linaro.org
78 lines
2.1 KiB
C
78 lines
2.1 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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#include <drm/drm_connector.h>
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#include <drm/drm_encoder.h>
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#include <drm/drm_panel.h>
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#include <drm/drm_bridge.h>
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#include <linux/clk-provider.h>
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#define CLCD_IRQ_NEXTBASE_UPDATE BIT(2)
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struct drm_minor;
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/**
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* struct pl111_variant_data - encodes IP differences
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* @name: the name of this variant
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* @is_pl110: this is the early PL110 variant
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* @formats: array of supported pixel formats on this variant
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* @nformats: the length of the array of supported pixel formats
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*/
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struct pl111_variant_data {
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const char *name;
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bool is_pl110;
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const u32 *formats;
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unsigned int nformats;
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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 drm_connector *connector;
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struct drm_panel *panel;
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struct drm_bridge *bridge;
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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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u32 ienb;
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u32 ctrl;
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/* The pixel clock (a reference to our clock divider off of CLCDCLK). */
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struct clk *clk;
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/* pl111's internal clock divider. */
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struct clk_hw clk_div;
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/* Lock to sync access to CLCD_TIM2 between the common clock
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* subsystem and pl111_display_enable().
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*/
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spinlock_t tim2_lock;
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const struct pl111_variant_data *variant;
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};
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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_debugfs_init(struct drm_minor *minor);
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#endif /* _PL111_DRM_H_ */
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