drivers/libglamo/glamo.h

   1 /*
   2  * Glamo chip access library (for graphics).
   3  *
   4  * Copyright (C) 2007 OpenMoko, Inc.
   5  * Author: Chia-I Wu <olv@openmoko.org>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 or
  10  * (at your option) version 3 of the License.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  20  * MA 02111-1307 USA
  21  */
  22 #ifndef _GLAMO_H_
  23 #define _GLAMO_H_
  24
  25 #define GLAMO_OUT_REG(reg, val) (*((volatile unsigned short *) ((glamo_mmio) + (reg))) = (val))
  26 #define GLAMO_IN_REG(reg) (*((volatile unsigned short *) ((glamo_mmio) + (reg))))
  27
  28 extern volatile unsigned char *glamo_fb;
  29 extern volatile unsigned char *glamo_mmio;
  30 extern int glamo_pitch;
  31
  32 extern int mydiv(int n, int d);
  33 extern int myrem(int n, int d);
  34
  35 inline static void glamo_set_bit_mask(int reg, int mask, int val)
  36 {
  37         int old;
  38
  39         old = GLAMO_IN_REG(reg);
  40         old &= ~mask;
  41         old |= val & mask;
  42         GLAMO_OUT_REG(reg, old);
  43 }
  44
  45 int glamo_os_init(const char *fb_path);
  46 void glamo_os_finish(void);
  47
  48 #endif /* _GLAMO_H_ */