summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/rcar-du/rcar_du_drv.h
blob: e31b735d3f258b69b65ab97320ddfe7440d7d6b9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
/*
 * rcar_du_drv.h  --  R-Car Display Unit DRM driver
 *
 * Copyright (C) 2013 Renesas Corporation
 *
 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#ifndef __RCAR_DU_DRV_H__
#define __RCAR_DU_DRV_H__

#include <linux/kernel.h>
#include <linux/platform_data/rcar-du.h>

#include "rcar_du_crtc.h"
#include "rcar_du_group.h"

struct clk;
struct device;
struct drm_device;
struct drm_fbdev_cma;
struct rcar_du_device;
struct rcar_du_lvdsenc;

#define RCAR_DU_FEATURE_CRTC_IRQ_CLOCK	(1 << 0)	/* Per-CRTC IRQ and clock */
#define RCAR_DU_FEATURE_DEFR8		(1 << 1)	/* Has DEFR8 register */

#define RCAR_DU_QUIRK_ALIGN_128B	(1 << 0)	/* Align pitches to 128 bytes */
#define RCAR_DU_QUIRK_LVDS_LANES	(1 << 1)	/* LVDS lanes 1 and 3 inverted */

/*
 * struct rcar_du_output_routing - Output routing specification
 * @possible_crtcs: bitmask of possible CRTCs for the output
 * @encoder_type: DRM type of the internal encoder associated with the output
 *
 * The DU has 5 possible outputs (DPAD0/1, LVDS0/1, TCON). Output routing data
 * specify the valid SoC outputs, which CRTCs can drive the output, and the type
 * of in-SoC encoder for the output.
 */
struct rcar_du_output_routing {
	unsigned int possible_crtcs;
	unsigned int encoder_type;
};

/*
 * struct rcar_du_device_info - DU model-specific information
 * @features: device features (RCAR_DU_FEATURE_*)
 * @quirks: device quirks (RCAR_DU_QUIRK_*)
 * @num_crtcs: total number of CRTCs
 * @routes: array of CRTC to output routes, indexed by output (RCAR_DU_OUTPUT_*)
 * @num_lvds: number of internal LVDS encoders
 */
struct rcar_du_device_info {
	unsigned int features;
	unsigned int quirks;
	unsigned int num_crtcs;
	struct rcar_du_output_routing routes[RCAR_DU_OUTPUT_MAX];
	unsigned int num_lvds;
};

struct rcar_du_device {
	struct device *dev;
	const struct rcar_du_platform_data *pdata;
	const struct rcar_du_device_info *info;

	void __iomem *mmio;

	struct drm_device *ddev;
	struct drm_fbdev_cma *fbdev;

	struct rcar_du_crtc crtcs[3];
	unsigned int num_crtcs;

	struct rcar_du_group groups[2];

	unsigned int dpad0_source;
	struct rcar_du_lvdsenc *lvds[2];
};

static inline bool rcar_du_has(struct rcar_du_device *rcdu,
			       unsigned int feature)
{
	return rcdu->info->features & feature;
}

static inline bool rcar_du_needs(struct rcar_du_device *rcdu,
				 unsigned int quirk)
{
	return rcdu->info->quirks & quirk;
}

static inline u32 rcar_du_read(struct rcar_du_device *rcdu, u32 reg)
{
	return ioread32(rcdu->mmio + reg);
}

static inline void rcar_du_write(struct rcar_du_device *rcdu, u32 reg, u32 data)
{
	iowrite32(data, rcdu->mmio + reg);
}

#endif /* __RCAR_DU_DRV_H__ */
OpenPOWER on IntegriCloud