summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/stm/ltdc.h
blob: 1e16d6afb0d2f6357f279fa3f5d05c650e6fc37e (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
/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright (C) STMicroelectronics SA 2017
 *
 * Authors: Philippe Cornu <philippe.cornu@st.com>
 *          Yannick Fertre <yannick.fertre@st.com>
 *          Fabien Dessenne <fabien.dessenne@st.com>
 *          Mickael Reulier <mickael.reulier@st.com>
 */

#ifndef _LTDC_H_
#define _LTDC_H_

struct ltdc_caps {
	u32 hw_version;		/* hardware version */
	u32 nb_layers;		/* number of supported layers */
	u32 reg_ofs;		/* register offset for applicable regs */
	u32 bus_width;		/* bus width (32 or 64 bits) */
	const u32 *pix_fmt_hw;	/* supported pixel formats */
	bool non_alpha_only_l1; /* non-native no-alpha formats on layer 1 */
};

#define LTDC_MAX_LAYER	4

struct fps_info {
	unsigned int counter;
	ktime_t last_timestamp;
};

struct ltdc_device {
	void __iomem *regs;
	struct clk *pixel_clk;	/* lcd pixel clock */
	struct mutex err_lock;	/* protecting error_status */
	struct ltdc_caps caps;
	u32 error_status;
	u32 irq_status;
	struct fps_info plane_fpsi[LTDC_MAX_LAYER];
};

int ltdc_load(struct drm_device *ddev);
void ltdc_unload(struct drm_device *ddev);

#endif