tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/* SPDX-License-Identifier: GPL-2.0-only
2 *
3 * Copyright © 2018-2020 Intel Corporation
4 */
5
6#ifndef __KMB_DRV_H__
7#define __KMB_DRV_H__
8
9#include <drm/drm_device.h>
10
11#include "kmb_plane.h"
12#include "kmb_regs.h"
13
14#define KMB_MAX_WIDTH 1920 /*Max width in pixels */
15#define KMB_MAX_HEIGHT 1080 /*Max height in pixels */
16#define KMB_MIN_WIDTH 1920 /*Max width in pixels */
17#define KMB_MIN_HEIGHT 1080 /*Max height in pixels */
18
19#define DRIVER_MAJOR 1
20#define DRIVER_MINOR 1
21
22/* Platform definitions */
23#define KMB_CRTC_MIN_VFP 4
24#define KMB_CRTC_MAX_WIDTH 1920 /* max width in pixels */
25#define KMB_CRTC_MAX_HEIGHT 1080 /* max height in pixels */
26#define KMB_CRTC_MIN_WIDTH 1920
27#define KMB_CRTC_MIN_HEIGHT 1080
28#define KMB_FB_MAX_WIDTH 1920
29#define KMB_FB_MAX_HEIGHT 1080
30#define KMB_FB_MIN_WIDTH 1
31#define KMB_FB_MIN_HEIGHT 1
32#define KMB_MIN_VREFRESH 59 /*vertical refresh in Hz */
33#define KMB_MAX_VREFRESH 60 /*vertical refresh in Hz */
34#define KMB_LCD_DEFAULT_CLK 200000000
35#define KMB_SYS_CLK_MHZ 500
36
37#define ICAM_MMIO 0x3b100000
38#define ICAM_LCD_OFFSET 0x1080
39#define ICAM_MMIO_SIZE 0x2000
40
41struct kmb_dsi;
42
43struct kmb_clock {
44 struct clk *clk_lcd;
45 struct clk *clk_pll0;
46};
47
48struct kmb_drm_private {
49 struct drm_device drm;
50 struct kmb_dsi *kmb_dsi;
51 void __iomem *lcd_mmio;
52 struct kmb_clock kmb_clk;
53 struct drm_crtc crtc;
54 struct kmb_plane *plane;
55 struct drm_atomic_state *state;
56 spinlock_t irq_lock;
57 int irq_lcd;
58 int sys_clk_mhz;
59 struct disp_cfg init_disp_cfg[KMB_MAX_PLANES];
60 struct layer_status plane_status[KMB_MAX_PLANES];
61 int kmb_under_flow;
62 int kmb_flush_done;
63 int layer_no;
64};
65
66static inline struct kmb_drm_private *to_kmb(const struct drm_device *dev)
67{
68 return container_of(dev, struct kmb_drm_private, drm);
69}
70
71static inline struct kmb_drm_private *crtc_to_kmb_priv(const struct drm_crtc *x)
72{
73 return container_of(x, struct kmb_drm_private, crtc);
74}
75
76static inline void kmb_write_lcd(struct kmb_drm_private *dev_p,
77 unsigned int reg, u32 value)
78{
79 writel(value, (dev_p->lcd_mmio + reg));
80}
81
82static inline u32 kmb_read_lcd(struct kmb_drm_private *dev_p, unsigned int reg)
83{
84 return readl(dev_p->lcd_mmio + reg);
85}
86
87static inline void kmb_set_bitmask_lcd(struct kmb_drm_private *dev_p,
88 unsigned int reg, u32 mask)
89{
90 u32 reg_val = kmb_read_lcd(dev_p, reg);
91
92 kmb_write_lcd(dev_p, reg, (reg_val | mask));
93}
94
95static inline void kmb_clr_bitmask_lcd(struct kmb_drm_private *dev_p,
96 unsigned int reg, u32 mask)
97{
98 u32 reg_val = kmb_read_lcd(dev_p, reg);
99
100 kmb_write_lcd(dev_p, reg, (reg_val & (~mask)));
101}
102
103int kmb_setup_crtc(struct drm_device *dev);
104void kmb_set_scanout(struct kmb_drm_private *lcd);
105#endif /* __KMB_DRV_H__ */