linux-imx

/*======================================================================

​

  Device driver for the PCMCIA control functionality of PXA2xx

  microprocessors.

​

    The contents of this file may be used under the

    terms of the GNU Public License version 2 (the "GPL")

​

    (c) Ian Molton (spyro@f2s.com) 2003

    (c) Stefan Eletzhofer (stefan.eletzhofer@inquant.de) 2003,4

​

    derived from sa11xx_base.c

​

     Portions created by John G. Dorsey are

     Copyright (C) 1999 John G. Dorsey.

​

  ======================================================================*/

​

#include <linux/module.h>

#include <linux/slab.h>

#include <linux/init.h>

#include <linux/cpufreq.h>

#include <linux/ioport.h>

#include <linux/kernel.h>

#include <linux/spinlock.h>

#include <linux/platform_device.h>

​

#include <mach/hardware.h>

#include <mach/smemc.h>

#include <asm/io.h>

#include <asm/irq.h>

#include <mach/pxa2xx-regs.h>

#include <asm/mach-types.h>

​

#include <pcmcia/ss.h>

#include <pcmcia/cistpl.h>

​

#include "soc_common.h"

#include "pxa2xx_base.h"

​

/*

 * Personal Computer Memory Card International Association (PCMCIA) sockets

 */

​

#define PCMCIAPrtSp 0x04000000  /* PCMCIA Partition Space [byte]   */

#define PCMCIASp    (4*PCMCIAPrtSp) /* PCMCIA Space [byte]             */

#define PCMCIAIOSp  PCMCIAPrtSp /* PCMCIA I/O Space [byte]         */

#define PCMCIAAttrSp    PCMCIAPrtSp /* PCMCIA Attribute Space [byte]   */

#define PCMCIAMemSp PCMCIAPrtSp /* PCMCIA Memory Space [byte]      */

​

#define PCMCIA0Sp   PCMCIASp    /* PCMCIA 0 Space [byte]           */

#define PCMCIA0IOSp PCMCIAIOSp  /* PCMCIA 0 I/O Space [byte]       */

#define PCMCIA0AttrSp   PCMCIAAttrSp    /* PCMCIA 0 Attribute Space [byte] */

#define PCMCIA0MemSp    PCMCIAMemSp /* PCMCIA 0 Memory Space [byte]    */

​

#define PCMCIA1Sp   PCMCIASp    /* PCMCIA 1 Space [byte]           */

#define PCMCIA1IOSp PCMCIAIOSp  /* PCMCIA 1 I/O Space [byte]       */

#define PCMCIA1AttrSp   PCMCIAAttrSp    /* PCMCIA 1 Attribute Space [byte] */

#define PCMCIA1MemSp    PCMCIAMemSp /* PCMCIA 1 Memory Space [byte]    */

​

#define _PCMCIA(Nb)         /* PCMCIA [0..1]                   */ \

            (0x20000000 + (Nb) * PCMCIASp)

#define _PCMCIAIO(Nb)   _PCMCIA(Nb) /* PCMCIA I/O [0..1]               */

#define _PCMCIAAttr(Nb)         /* PCMCIA Attribute [0..1]         */ \

            (_PCMCIA(Nb) + 2 * PCMCIAPrtSp)

#define _PCMCIAMem(Nb)          /* PCMCIA Memory [0..1]            */ \

            (_PCMCIA(Nb) + 3 * PCMCIAPrtSp)

​

#define _PCMCIA0    _PCMCIA(0)  /* PCMCIA 0                        */

#define _PCMCIA0IO  _PCMCIAIO(0)    /* PCMCIA 0 I/O                    */

#define _PCMCIA0Attr    _PCMCIAAttr(0)  /* PCMCIA 0 Attribute              */

#define _PCMCIA0Mem _PCMCIAMem(0)   /* PCMCIA 0 Memory                 */

​

#define _PCMCIA1    _PCMCIA(1)  /* PCMCIA 1                        */

#define _PCMCIA1IO  _PCMCIAIO(1)    /* PCMCIA 1 I/O                    */

#define _PCMCIA1Attr    _PCMCIAAttr(1)  /* PCMCIA 1 Attribute              */

#define _PCMCIA1Mem _PCMCIAMem(1)   /* PCMCIA 1 Memory                 */

​

​

#define MCXX_SETUP_MASK     (0x7f)

#define MCXX_ASST_MASK      (0x1f)

#define MCXX_HOLD_MASK      (0x3f)

#define MCXX_SETUP_SHIFT    (0)

#define MCXX_ASST_SHIFT     (7)

#define MCXX_HOLD_SHIFT     (14)

​

static inline u_int pxa2xx_mcxx_hold(u_int pcmcia_cycle_ns,

                     u_int mem_clk_10khz)

{

    u_int code = pcmcia_cycle_ns * mem_clk_10khz;

    return (code / 300000) + ((code % 300000) ? 1 : 0) - 1;

}