1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef SH_MOBILE_LCDCFB_H
3 #define SH_MOBILE_LCDCFB_H
4 
5 #include <linux/completion.h>
6 #include <linux/fb.h>
7 #include <linux/mutex.h>
8 #include <linux/wait.h>
9 
10 /* per-channel registers */
11 enum { LDDCKPAT1R, LDDCKPAT2R, LDMT1R, LDMT2R, LDMT3R, LDDFR, LDSM1R,
12        LDSM2R, LDSA1R, LDSA2R, LDMLSR, LDHCNR, LDHSYNR, LDVLNR, LDVSYNR, LDPMR,
13        LDHAJR,
14        NR_CH_REGS };
15 
16 #define PALETTE_NR 16
17 
18 struct backlight_device;
19 struct fb_info;
20 struct module;
21 struct sh_mobile_lcdc_chan;
22 struct sh_mobile_lcdc_entity;
23 struct sh_mobile_lcdc_format_info;
24 struct sh_mobile_lcdc_priv;
25 
26 #define SH_MOBILE_LCDC_DISPLAY_DISCONNECTED	0
27 #define SH_MOBILE_LCDC_DISPLAY_CONNECTED	1
28 
29 struct sh_mobile_lcdc_entity_ops {
30 	/* Display */
31 	int (*display_on)(struct sh_mobile_lcdc_entity *entity);
32 	void (*display_off)(struct sh_mobile_lcdc_entity *entity);
33 };
34 
35 enum sh_mobile_lcdc_entity_event {
36 	SH_MOBILE_LCDC_EVENT_DISPLAY_CONNECT,
37 	SH_MOBILE_LCDC_EVENT_DISPLAY_DISCONNECT,
38 	SH_MOBILE_LCDC_EVENT_DISPLAY_MODE,
39 };
40 
41 struct sh_mobile_lcdc_entity {
42 	struct module *owner;
43 	const struct sh_mobile_lcdc_entity_ops *ops;
44 	struct sh_mobile_lcdc_chan *lcdc;
45 	struct fb_videomode def_mode;
46 };
47 
48 /*
49  * struct sh_mobile_lcdc_chan - LCDC display channel
50  *
51  * @pan_y_offset: Panning linear offset in bytes (luma component)
52  * @base_addr_y: Frame buffer viewport base address (luma component)
53  * @base_addr_c: Frame buffer viewport base address (chroma component)
54  * @pitch: Frame buffer line pitch
55  */
56 struct sh_mobile_lcdc_chan {
57 	struct sh_mobile_lcdc_priv *lcdc;
58 	struct sh_mobile_lcdc_entity *tx_dev;
59 	const struct sh_mobile_lcdc_chan_cfg *cfg;
60 
61 	unsigned long *reg_offs;
62 	unsigned long ldmt1r_value;
63 	unsigned long enabled; /* ME and SE in LDCNT2R */
64 
65 	struct mutex open_lock;		/* protects the use counter */
66 	int use_count;
67 
68 	void *fb_mem;
69 	unsigned long fb_size;
70 
71 	dma_addr_t dma_handle;
72 	unsigned long pan_y_offset;
73 
74 	unsigned long frame_end;
75 	wait_queue_head_t frame_end_wait;
76 	struct completion vsync_completion;
77 
78 	const struct sh_mobile_lcdc_format_info *format;
79 	u32 colorspace;
80 	unsigned int xres;
81 	unsigned int xres_virtual;
82 	unsigned int yres;
83 	unsigned int yres_virtual;
84 	unsigned int pitch;
85 
86 	unsigned long base_addr_y;
87 	unsigned long base_addr_c;
88 	unsigned int line_size;
89 
90 	int (*notify)(struct sh_mobile_lcdc_chan *ch,
91 		      enum sh_mobile_lcdc_entity_event event,
92 		      const struct fb_videomode *mode,
93 		      const struct fb_monspecs *monspec);
94 
95 	/* Backlight */
96 	struct backlight_device *bl;
97 	unsigned int bl_brightness;
98 
99 	/* FB */
100 	struct fb_info *info;
101 	u32 pseudo_palette[PALETTE_NR];
102 	struct {
103 		unsigned int width;
104 		unsigned int height;
105 		struct fb_videomode mode;
106 	} display;
107 	struct fb_deferred_io defio;
108 	struct scatterlist *sglist;
109 	int blank_status;
110 };
111 
112 #endif
113