drivers/video/i810/i810_main.h

   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 */
  18 extern void round_off_xres         (u32 *xres);
  19 extern void round_off_yres         (u32 *xres, u32 *yres);
  20 extern u32 i810_get_watermark      (const struct fb_var_screeninfo *var,
  21                                     struct i810fb_par *par);
  22 extern void i810fb_encode_registers(const struct fb_var_screeninfo *var,
  23                                     struct i810fb_par *par, u32 xres, u32 yres);
  24 extern void i810fb_fill_var_timings(struct fb_var_screeninfo *var);
  25
  26 /* Accelerated Functions */
  27 extern void i810fb_fillrect (struct fb_info *p,
  28                              const struct fb_fillrect *rect);
  29 extern void i810fb_copyarea (struct fb_info *p,
  30                              const struct fb_copyarea *region);
  31 extern void i810fb_imageblit(struct fb_info *p, const struct fb_image *image);
  32 extern int  i810fb_sync     (struct fb_info *p);
  33
  34 extern void i810fb_init_ringbuffer(struct fb_info *info);
  35 extern void i810fb_load_front     (u32 offset, struct fb_info *info);
  36
  37 #ifdef CONFIG_FB_I810_I2C
  38 /* I2C */
  39 extern int i810_probe_i2c_connector(struct fb_info *info, u8 **out_edid,
  40                                     int conn);
  41 extern void i810_create_i2c_busses(struct i810fb_par *par);
  42 extern void i810_delete_i2c_busses(struct i810fb_par *par);
  43 #else
  44 static inline int i810_probe_i2c_connector(struct fb_info *info, u8 **out_edid,
  45                                     int conn)
  46 {
  47         return 1;
  48 }
  49 static inline void i810_create_i2c_busses(struct i810fb_par *par) { }
  50 static inline void i810_delete_i2c_busses(struct i810fb_par *par) { }
  51 #endif
  52
  53 /* Conditionals */
  54 #ifdef CONFIG_X86
  55 static 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
  67 static inline void __devinit 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 }
  77 static 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__ */