xref: /openbmc/linux/drivers/staging/sm750fb/sm750.h (revision cc59bde1)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef LYNXDRV_H_
3 #define LYNXDRV_H_
4 
5 #define FB_ACCEL_SMI 0xab
6 
7 #define MHZ(x) ((x) * 1000000)
8 
9 #define DEFAULT_SM750_CHIP_CLOCK	290
10 #define DEFAULT_SM750LE_CHIP_CLOCK	333
11 #ifndef SM750LE_REVISION_ID
12 #define SM750LE_REVISION_ID ((unsigned char)0xfe)
13 #endif
14 
15 enum sm750_pnltype {
16 	sm750_24TFT = 0,	/* 24bit tft */
17 	sm750_dualTFT = 2,	/* dual 18 bit tft */
18 	sm750_doubleTFT = 1,	/* 36 bit double pixel tft */
19 };
20 
21 /* vga channel is not concerned  */
22 enum sm750_dataflow {
23 	sm750_simul_pri,	/* primary => all head */
24 	sm750_simul_sec,	/* secondary => all head */
25 	sm750_dual_normal,	/* primary => panel head and secondary => crt */
26 	sm750_dual_swap,	/* primary => crt head and secondary => panel */
27 };
28 
29 enum sm750_channel {
30 	sm750_primary = 0,
31 	/* enum value equal to the register filed data */
32 	sm750_secondary = 1,
33 };
34 
35 enum sm750_path {
36 	sm750_panel = 1,
37 	sm750_crt = 2,
38 	sm750_pnc = 3,	/* panel and crt */
39 };
40 
41 struct init_status {
42 	ushort powerMode;
43 	/* below three clocks are in unit of MHZ*/
44 	ushort chip_clk;
45 	ushort mem_clk;
46 	ushort master_clk;
47 	ushort setAllEngOff;
48 	ushort resetMemory;
49 };
50 
51 struct lynx_accel {
52 	/* base virtual address of DPR registers */
53 	volatile unsigned char __iomem *dprBase;
54 	/* base virtual address of de data port */
55 	volatile unsigned char __iomem *dpPortBase;
56 
57 	/* function pointers */
58 	void (*de_init)(struct lynx_accel *accel);
59 
60 	int (*de_wait)(void);/* see if hardware ready to work */
61 
62 	int (*de_fillrect)(struct lynx_accel *accel,
63 			   u32 base, u32 pitch, u32 bpp,
64 			   u32 x, u32 y, u32 width, u32 height,
65 			   u32 color, u32 rop);
66 
67 	int (*de_copyarea)(struct lynx_accel *accel,
68 			   u32 s_base, u32 s_pitch,
69 			   u32 sx, u32 sy,
70 			   u32 d_base, u32 d_pitch,
71 			   u32 bpp, u32 dx, u32 dy,
72 			   u32 width, u32 height,
73 			   u32 rop2);
74 
75 	int (*de_imageblit)(struct lynx_accel *accel, const char *p_srcbuf,
76 			    u32 src_delta, u32 start_bit, u32 d_base, u32 d_pitch,
77 			    u32 byte_per_pixel, u32 dx, u32 dy, u32 width,
78 			    u32 height, u32 f_color, u32 b_color, u32 rop2);
79 
80 };
81 
82 struct sm750_dev {
83 	/* common members */
84 	u16 devid;
85 	u8 revid;
86 	struct pci_dev *pdev;
87 	struct fb_info *fbinfo[2];
88 	struct lynx_accel accel;
89 	int accel_off;
90 	int fb_count;
91 	int mtrr_off;
92 	struct{
93 		int vram;
94 	} mtrr;
95 	/* all smi graphic adaptor got below attributes */
96 	unsigned long vidmem_start;
97 	unsigned long vidreg_start;
98 	__u32 vidmem_size;
99 	__u32 vidreg_size;
100 	void __iomem *pvReg;
101 	unsigned char __iomem *pvMem;
102 	/* locks*/
103 	spinlock_t slock;
104 
105 	struct init_status initParm;
106 	enum sm750_pnltype pnltype;
107 	enum sm750_dataflow dataflow;
108 	int nocrt;
109 
110 	/*
111 	 * 0: no hardware cursor
112 	 * 1: primary crtc hw cursor enabled,
113 	 * 2: secondary crtc hw cursor enabled
114 	 * 3: both ctrc hw cursor enabled
115 	 */
116 	int hwCursor;
117 };
118 
119 struct lynx_cursor {
120 	/* cursor width ,height and size */
121 	int w;
122 	int h;
123 	int size;
124 	/* hardware limitation */
125 	int max_w;
126 	int max_h;
127 	/* base virtual address and offset  of cursor image */
128 	char __iomem *vstart;
129 	int offset;
130 	/* mmio addr of hw cursor */
131 	volatile char __iomem *mmio;
132 };
133 
134 struct lynxfb_crtc {
135 	unsigned char __iomem *v_cursor; /* virtual address of cursor */
136 	unsigned char __iomem *v_screen; /* virtual address of on_screen */
137 	int o_cursor; /* cursor address offset in vidmem */
138 	int o_screen; /* onscreen address offset in vidmem */
139 	int channel;/* which channel this crtc stands for*/
140 	resource_size_t vidmem_size;/* this view's video memory max size */
141 
142 	/* below attributes belong to info->fix, their value depends on specific adaptor*/
143 	u16 line_pad;/* padding information:0,1,2,4,8,16,... */
144 	u16 xpanstep;
145 	u16 ypanstep;
146 	u16 ywrapstep;
147 
148 	void *priv;
149 
150 	/* cursor information */
151 	struct lynx_cursor cursor;
152 };
153 
154 struct lynxfb_output {
155 	int dpms;
156 	int paths;
157 	/*
158 	 * which paths(s) this output stands for,for sm750:
159 	 * paths=1:means output for panel paths
160 	 * paths=2:means output for crt paths
161 	 * paths=3:means output for both panel and crt paths
162 	 */
163 
164 	int *channel;
165 	/*
166 	 * which channel these outputs linked with,for sm750:
167 	 * *channel=0 means primary channel
168 	 * *channel=1 means secondary channel
169 	 * output->channel ==> &crtc->channel
170 	 */
171 	void *priv;
172 
173 	int (*proc_setBLANK)(struct lynxfb_output *output, int blank);
174 };
175 
176 struct lynxfb_par {
177 	/* either 0 or 1 for dual head adaptor,0 is the older one registered */
178 	int index;
179 	unsigned int pseudo_palette[256];
180 	struct lynxfb_crtc crtc;
181 	struct lynxfb_output output;
182 	struct fb_info *info;
183 	struct sm750_dev *dev;
184 };
185 
ps_to_hz(unsigned int psvalue)186 static inline unsigned long ps_to_hz(unsigned int psvalue)
187 {
188 	unsigned long long numerator = 1000 * 1000 * 1000 * 1000ULL;
189 	/* 10^12 / picosecond period gives frequency in Hz */
190 	do_div(numerator, psvalue);
191 	return (unsigned long)numerator;
192 }
193 
194 int hw_sm750_map(struct sm750_dev *sm750_dev, struct pci_dev *pdev);
195 int hw_sm750_inithw(struct sm750_dev *sm750_dev, struct pci_dev *pdev);
196 void hw_sm750_initAccel(struct sm750_dev *sm750_dev);
197 int hw_sm750_deWait(void);
198 int hw_sm750le_deWait(void);
199 
200 int hw_sm750_output_setMode(struct lynxfb_output *output,
201 			    struct fb_var_screeninfo *var,
202 			    struct fb_fix_screeninfo *fix);
203 
204 int hw_sm750_crtc_checkMode(struct lynxfb_crtc *crtc,
205 			    struct fb_var_screeninfo *var);
206 
207 int hw_sm750_crtc_setMode(struct lynxfb_crtc *crtc,
208 			  struct fb_var_screeninfo *var,
209 			  struct fb_fix_screeninfo *fix);
210 
211 int hw_sm750_setColReg(struct lynxfb_crtc *crtc, ushort index,
212 		       ushort red, ushort green, ushort blue);
213 
214 int hw_sm750_setBLANK(struct lynxfb_output *output, int blank);
215 int hw_sm750le_setBLANK(struct lynxfb_output *output, int blank);
216 int hw_sm750_pan_display(struct lynxfb_crtc *crtc,
217 			 const struct fb_var_screeninfo *var,
218 			 const struct fb_info *info);
219 
220 #endif
221