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/*

 * linux/drivers/pcmcia/sa1100_badge4.c

 *

 * BadgePAD 4 PCMCIA specific routines

 *

 *   Christopher Hoover <ch@hpl.hp.com>

 *

 * Copyright (C) 2002 Hewlett-Packard Company

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 *

 */

#include <linux/kernel.h>

#include <linux/sched.h>

#include <linux/init.h>

#include <asm/hardware.h>

#include <asm/arch/badge4.h>

#include <asm/hardware/sa1111.h>

#include "sa1100_generic.h"

#include "sa1111_generic.h"

/*

 * BadgePAD 4 Details

 *

 * PCM Vcc:

 *

 *  PCM Vcc on BadgePAD 4 can be jumpered for 3.3V (short pins 1 and 3

 *  on JP6) or 5V (short pins 3 and 5 on JP6).  N.B., 5V supply rail

 *  is enabled by the SA-1110's BADGE4_GPIO_PCMEN5V (GPIO 24).

 *

 * PCM Vpp:

 *

 *  PCM Vpp on BadgePAD 4 can be jumpered for 12V (short pins 2 and 4

 *  on JP6) or tied to PCM Vcc (short pins 4 and 6 on JP6).  N.B., 12V

 *  operation requires that the power supply actually supply 12V.

 *

 * CF Vcc:

 *

 *  CF Vcc on BadgePAD 4 can be jumpered either for 3.3V (short pins 1

 *  and 2 on JP10) or 5V (short pins 2 and 3 on JP10).  The note above

 *  about the 5V supply rail applies.

 *

 * There's no way programmatically to determine how a given board is

 * jumpered.  This code assumes a default jumpering: 5V PCM Vcc (pins

 * 3 and 5 shorted) and PCM Vpp = PCM Vcc (pins 4 and 6 shorted) and

 * no jumpering for CF Vcc.  If this isn't correct, Override these

 * defaults with a pcmv setup argument: pcmv=<pcm vcc>,<pcm vpp>,<cf

 * vcc>.  E.g. pcmv=33,120,50 indicates 3.3V PCM Vcc, 12.0V PCM Vpp,

 * and 5.0V CF Vcc.

 *

 */

static int badge4_pcmvcc = 50;

static int badge4_pcmvpp = 50;

static int badge4_cfvcc = 0;

static int badge4_pcmcia_init(struct pcmcia_init *init)

{

        printk(KERN_INFO __FUNCTION__

               ": badge4_pcmvcc=%d, badge4_pcmvpp=%d, badge4_cfvcc=%d\n",

               badge4_pcmvcc, badge4_pcmvpp, badge4_cfvcc);

        return sa1111_pcmcia_init(init);

}

static int badge4_pcmcia_shutdown(void)

{

        int rc = sa1111_pcmcia_shutdown();

        /* be sure to disable 5V use */

        badge4_set_5V(BADGE4_5V_PCMCIA_SOCK0, 0);

        badge4_set_5V(BADGE4_5V_PCMCIA_SOCK1, 0);

        return rc;

}

static void complain_about_jumpering(const char *whom,

                                     const char *supply,

                                     int given, int wanted)

{

        printk(KERN_ERR

         "%s: %s %d.%dV wanted but board is jumpered for %s %d.%dV operation"

         "; re-jumper the board and/or use pcmv=xx,xx,xx\n",

               whom, supply,

               wanted / 10, wanted % 10,

               supply,

               given / 10, given % 10);

}

static unsigned badge4_need_5V_bitmap = 0;

static int

badge4_pcmcia_configure_socket(const struct pcmcia_configure *conf)

{

        int ret;

        switch (conf->sock) {

        case 0:

                if ((conf->vcc != 0) &&

                    (conf->vcc != badge4_pcmvcc)) {

                        complain_about_jumpering(__FUNCTION__, "pcmvcc",

                                                 badge4_pcmvcc, conf->vcc);

                        return -1;

                }

                if ((conf->vpp != 0) &&

                    (conf->vpp != badge4_pcmvpp)) {

                        complain_about_jumpering(__FUNCTION__, "pcmvpp",

                                                 badge4_pcmvpp, conf->vpp);

                        return -1;

                }

                break;

        case 1:

                if ((conf->vcc != 0) &&

                    (conf->vcc != badge4_cfvcc)) {

                        complain_about_jumpering(__FUNCTION__, "cfvcc",

                                                 badge4_cfvcc, conf->vcc);

                        return -1;

                }

                break;

        default:

                return -1;

        }

        ret = sa1111_pcmcia_configure_socket(conf);

        if (ret == 0) {

                unsigned long flags;

                int need5V;

                local_irq_save(flags);

                need5V = ((conf->vcc == 50) || (conf->vpp == 50));

                badge4_set_5V(BADGE4_5V_PCMCIA_SOCK(conf->sock), need5V);

                local_irq_restore(flags);

        }

        return 0;

}

struct pcmcia_low_level badge4_pcmcia_ops = {

        init:                   badge4_pcmcia_init,

        shutdown:               badge4_pcmcia_shutdown,

        socket_state:           sa1111_pcmcia_socket_state,

        get_irq_info:           sa1111_pcmcia_get_irq_info,

        configure_socket:       badge4_pcmcia_configure_socket,

        socket_init:            sa1111_pcmcia_socket_init,

        socket_suspend:         sa1111_pcmcia_socket_suspend,

};

static int __init pcmv_setup(char *s)

{

        int v[4];

        s = get_options(s, ARRAY_SIZE(v), v);

        if (v[0] >= 1) badge4_pcmvcc = v[1];

        if (v[0] >= 2) badge4_pcmvpp = v[2];

        if (v[0] >= 3) badge4_cfvcc = v[3];

        return 1;

}

__setup("pcmv=", pcmv_setup);