1/*-*- linux-c -*-
2 *  linux/drivers/video/i810fb_main.h -- Intel 810 frame buffer device
3 *                                       main header file
4 *
5 *      Copyright (C) 2001 Antonino Daplas<adaplas@pol.net>
6 *      All Rights Reserved
7 *
8 *
9 *  This file is subject to the terms and conditions of the GNU General Public
10 *  License. See the file COPYING in the main directory of this archive for
11 *  more details.
12 */
13
14#ifndef __I810_MAIN_H__
15#define __I810_MAIN_H__
16
17/* Video Timings */
18extern void round_off_xres         (u32 *xres);
19extern void round_off_yres         (u32 *xres, u32 *yres);
20extern u32 i810_get_watermark      (const struct fb_var_screeninfo *var,
21			            struct i810fb_par *par);
22extern void i810fb_encode_registers(const struct fb_var_screeninfo *var,
23				    struct i810fb_par *par, u32 xres, u32 yres);
24extern void i810fb_fill_var_timings(struct fb_var_screeninfo *var);
25
26/* Accelerated Functions */
27extern void i810fb_fillrect (struct fb_info *p,
28			     const struct fb_fillrect *rect);
29extern void i810fb_copyarea (struct fb_info *p,
30			     const struct fb_copyarea *region);
31extern void i810fb_imageblit(struct fb_info *p, const struct fb_image *image);
32extern int  i810fb_sync     (struct fb_info *p);
33
34extern void i810fb_init_ringbuffer(struct fb_info *info);
35extern void i810fb_load_front     (u32 offset, struct fb_info *info);
36
37#ifdef CONFIG_FB_I810_I2C
38/* I2C */
39extern int i810_probe_i2c_connector(struct fb_info *info, u8 **out_edid,
40				    int conn);
41extern void i810_create_i2c_busses(struct i810fb_par *par);
42extern void i810_delete_i2c_busses(struct i810fb_par *par);
43#else
44static inline int i810_probe_i2c_connector(struct fb_info *info, u8 **out_edid,
45				    int conn)
46{
47	return 1;
48}
49static inline void i810_create_i2c_busses(struct i810fb_par *par) { }
50static inline void i810_delete_i2c_busses(struct i810fb_par *par) { }
51#endif
52
53/* Conditionals */
54#ifdef CONFIG_X86
55static inline void flush_cache(void)
56{
57	asm volatile ("wbinvd":::"memory");
58}
59#else
60#define flush_cache() do { } while(0)
61#endif
62
63#ifdef CONFIG_MTRR
64
65#include <asm/mtrr.h>
66
67static inline void set_mtrr(struct i810fb_par *par)
68{
69	par->mtrr_reg = mtrr_add((u32) par->aperture.physical,
70		 par->aperture.size, MTRR_TYPE_WRCOMB, 1);
71	if (par->mtrr_reg < 0) {
72		printk(KERN_ERR "set_mtrr: unable to set MTRR\n");
73		return;
74	}
75	par->dev_flags |= HAS_MTRR;
76}
77static inline void unset_mtrr(struct i810fb_par *par)
78{
79  	if (par->dev_flags & HAS_MTRR)
80  		mtrr_del(par->mtrr_reg, (u32) par->aperture.physical,
81			 par->aperture.size);
82}
83#else
84#define set_mtrr(x) printk("set_mtrr: MTRR is disabled in the kernel\n")
85
86#define unset_mtrr(x) do { } while (0)
87#endif /* CONFIG_MTRR */
88
89#ifdef CONFIG_FB_I810_GTF
90#define IS_DVT (0)
91#else
92#define IS_DVT (1)
93#endif
94
95#endif /* __I810_MAIN_H__ */
96