tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/*
2 *
3 * (C) COPYRIGHT 2012-2013 ARM Limited. All rights reserved.
4 *
5 *
6 * Parts of this file were based on sources as follows:
7 *
8 * Copyright (c) 2006-2008 Intel Corporation
9 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
10 * Copyright (C) 2011 Texas Instruments
11 *
12 * This program is free software and is provided to you under the terms of the
13 * GNU General Public License version 2 as published by the Free Software
14 * Foundation, and any use by you of this program is subject to the terms of
15 * such GNU licence.
16 *
17 */
18
19#ifndef _PL111_DRM_H_
20#define _PL111_DRM_H_
21
22#include <drm/drm_gem.h>
23#include <drm/drm_simple_kms_helper.h>
24#include <drm/drm_connector.h>
25#include <drm/drm_encoder.h>
26#include <drm/drm_panel.h>
27#include <drm/drm_bridge.h>
28#include <linux/clk-provider.h>
29#include <linux/interrupt.h>
30
31#define CLCD_IRQ_NEXTBASE_UPDATE BIT(2)
32
33struct drm_minor;
34
35/**
36 * struct pl111_variant_data - encodes IP differences
37 * @name: the name of this variant
38 * @is_pl110: this is the early PL110 variant
39 * @is_lcdc: this is the ST Microelectronics Nomadik LCDC variant
40 * @external_bgr: this is the Versatile Pl110 variant with external
41 * BGR/RGB routing
42 * @broken_clockdivider: the clock divider is broken and we need to
43 * use the supplied clock directly
44 * @broken_vblank: the vblank IRQ is broken on this variant
45 * @st_bitmux_control: this variant is using the ST Micro bitmux
46 * extensions to the control register
47 * @formats: array of supported pixel formats on this variant
48 * @nformats: the length of the array of supported pixel formats
49 * @fb_bpp: desired bits per pixel on the default framebuffer
50 */
51struct pl111_variant_data {
52 const char *name;
53 bool is_pl110;
54 bool is_lcdc;
55 bool external_bgr;
56 bool broken_clockdivider;
57 bool broken_vblank;
58 bool st_bitmux_control;
59 const u32 *formats;
60 unsigned int nformats;
61 unsigned int fb_bpp;
62};
63
64struct pl111_drm_dev_private {
65 struct drm_device *drm;
66
67 struct drm_connector *connector;
68 struct drm_panel *panel;
69 struct drm_bridge *bridge;
70 struct drm_simple_display_pipe pipe;
71
72 void *regs;
73 u32 memory_bw;
74 u32 ienb;
75 u32 ctrl;
76 /* The pixel clock (a reference to our clock divider off of CLCDCLK). */
77 struct clk *clk;
78 /* pl111's internal clock divider. */
79 struct clk_hw clk_div;
80 /* Lock to sync access to CLCD_TIM2 between the common clock
81 * subsystem and pl111_display_enable().
82 */
83 spinlock_t tim2_lock;
84 const struct pl111_variant_data *variant;
85 void (*variant_display_enable) (struct drm_device *drm, u32 format);
86 void (*variant_display_disable) (struct drm_device *drm);
87 bool use_device_memory;
88};
89
90int pl111_display_init(struct drm_device *dev);
91irqreturn_t pl111_irq(int irq, void *data);
92int pl111_debugfs_init(struct drm_minor *minor);
93
94#endif /* _PL111_DRM_H_ */