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 <linux/delay.h>
  31
  32 #include <plat/i2c.h>
  33
  34 struct sys_timer;
  35
  36 extern void omap_map_common_io(void);
  37 extern struct sys_timer omap1_timer;
  38 extern struct sys_timer omap2_timer;
  39 extern struct sys_timer omap3_timer;
  40 extern struct sys_timer omap3_secure_timer;
  41 extern struct sys_timer omap4_timer;
  42 extern bool omap_32k_timer_init(void);
  43 extern int __init omap_init_clocksource_32k(void);
  44 extern unsigned long long notrace omap_32k_sched_clock(void);
  45
  46 extern void omap_reserve(void);
  47
  48 /*
  49  * IO bases for various OMAP processors
  50  * Except the tap base, rest all the io bases
  51  * listed are physical addresses.
  52  */
  53 struct omap_globals {
  54         u32             class;          /* OMAP class to detect */
  55         void __iomem    *tap;           /* Control module ID code */
  56         unsigned long   sdrc;           /* SDRAM Controller */
  57         unsigned long   sms;            /* SDRAM Memory Scheduler */
  58         unsigned long   ctrl;           /* System Control Module */
  59         unsigned long   ctrl_pad;       /* PAD Control Module */
  60         unsigned long   prm;            /* Power and Reset Management */
  61         unsigned long   cm;             /* Clock Management */
  62         unsigned long   cm2;
  63 };
  64
  65 void omap2_set_globals_242x(void);
  66 void omap2_set_globals_243x(void);
  67 void omap2_set_globals_3xxx(void);
  68 void omap2_set_globals_443x(void);
  69 void omap2_set_globals_ti816x(void);
  70
  71 /* These get called from omap2_set_globals_xxxx(), do not call these */
  72 void omap2_set_globals_tap(struct omap_globals *);
  73 void omap2_set_globals_sdrc(struct omap_globals *);
  74 void omap2_set_globals_control(struct omap_globals *);
  75 void omap2_set_globals_prcm(struct omap_globals *);
  76
  77 void omap3_map_io(void);
  78
  79 /**
  80  * omap_test_timeout - busy-loop, testing a condition
  81  * @cond: condition to test until it evaluates to true
  82  * @timeout: maximum number of microseconds in the timeout
  83  * @index: loop index (integer)
  84  *
  85  * Loop waiting for @cond to become true or until at least @timeout
  86  * microseconds have passed.  To use, define some integer @index in the
  87  * calling code.  After running, if @index == @timeout, then the loop has
  88  * timed out.
  89  */
  90 #define omap_test_timeout(cond, timeout, index)                 \
  91 ({                                                              \
  92         for (index = 0; index < timeout; index++) {             \
  93                 if (cond)                                       \
  94                         break;                                  \
  95                 udelay(1);                                      \
  96         }                                                       \
  97 })
  98
  99 extern struct device *omap2_get_mpuss_device(void);
 100 extern struct device *omap2_get_iva_device(void);
 101 extern struct device *omap2_get_l3_device(void);
 102 extern struct device *omap4_get_dsp_device(void);
 103
 104 #endif /* __ARCH_ARM_MACH_OMAP_COMMON_H */