arch/arm/plat-omap/include/plat/common.h

   1 /*
   2  * arch/arm/plat-omap/include/mach/common.h
   3  *
   4  * Header for code common to all OMAP machines.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2 of the License, or (at your
   9  * option) any later version.
  10  *
  11  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
  12  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  13  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
  14  * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  15  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  16  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  17  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  18  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  19  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  20  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  21  *
  22  * You should have received a copy of the  GNU General Public License along
  23  * with this program; if not, write  to the Free Software Foundation, Inc.,
  24  * 675 Mass Ave, Cambridge, MA 02139, USA.
  25  */
  26
  27 #ifndef __ARCH_ARM_MACH_OMAP_COMMON_H
  28 #define __ARCH_ARM_MACH_OMAP_COMMON_H
  29
  30 #include <plat/i2c.h>
  31
  32 struct sys_timer;
  33
  34 /* used by omap-smp.c and board-4430sdp.c */
  35 extern void __iomem *gic_cpu_base_addr;
  36
  37 extern void omap_map_common_io(void);
  38 extern struct sys_timer omap_timer;
  39
  40 /* IO bases for various OMAP processors */
  41 struct omap_globals {
  42         u32             class;          /* OMAP class to detect */
  43         void __iomem    *tap;           /* Control module ID code */
  44         void __iomem    *sdrc;          /* SDRAM Controller */
  45         void __iomem    *sms;           /* SDRAM Memory Scheduler */
  46         void __iomem    *ctrl;          /* System Control Module */
  47         void __iomem    *prm;           /* Power and Reset Management */
  48         void __iomem    *cm;            /* Clock Management */
  49         void __iomem    *cm2;
  50 };
  51
  52 void omap2_set_globals_242x(void);
  53 void omap2_set_globals_243x(void);
  54 void omap2_set_globals_343x(void);
  55 void omap2_set_globals_443x(void);
  56
  57 /* These get called from omap2_set_globals_xxxx(), do not call these */
  58 void omap2_set_globals_tap(struct omap_globals *);
  59 void omap2_set_globals_sdrc(struct omap_globals *);
  60 void omap2_set_globals_control(struct omap_globals *);
  61 void omap2_set_globals_prcm(struct omap_globals *);
  62
  63 /**
  64  * omap_test_timeout - busy-loop, testing a condition
  65  * @cond: condition to test until it evaluates to true
  66  * @timeout: maximum number of microseconds in the timeout
  67  * @index: loop index (integer)
  68  *
  69  * Loop waiting for @cond to become true or until at least @timeout
  70  * microseconds have passed.  To use, define some integer @index in the
  71  * calling code.  After running, if @index == @timeout, then the loop has
  72  * timed out.
  73  */
  74 #define omap_test_timeout(cond, timeout, index)                 \
  75 ({                                                              \
  76         for (index = 0; index < timeout; index++) {             \
  77                 if (cond)                                       \
  78                         break;                                  \
  79                 udelay(1);                                      \
  80         }                                                       \
  81 })
  82
  83 #endif /* __ARCH_ARM_MACH_OMAP_COMMON_H */