sa1100_system3.c

来自「Linux Kernel 2.6.9 for OMAP1710」· C语言 代码 · 共 116 行

/*
 * drivers/pcmcia/sa1100_system3.c
 *
 * PT Diagital Board PCMCIA specific routines
 *
 * Copyright (C) 2001 Stefan Eletzhofer <[e-mail]>
 *
 * $Id: sa1100_system3.c,v 1.1.4.2 2002/02/25 13:56:45 seletz Exp $
 *
 * 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.
 *
 * $Log: sa1100_system3.c,v $
 * Revision 1.1.4.2  2002/02/25 13:56:45  seletz
 * - more cleanups
 * - setup interrupts for CF card only ATM
 *
 * Revision 1.1.4.1  2002/02/14 02:23:27  seletz
 * - 2.5.2-rmk6 PCMCIA changes
 *
 * Revision 1.1.2.1  2002/02/13 23:49:33  seletz
 * - added from 2.4.16-rmk2
 * - cleanups
 *
 *
 */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/ioport.h>

#include <asm/hardware.h>
#include <asm/mach-types.h>
#include <asm/irq.h>
#include <asm/hardware/sa1111.h>

#include "sa1111_generic.h"

#define DEBUG 0

#ifdef DEBUG
#	define DPRINTK( x, args... )	printk( "%s: line %d: "x, __FUNCTION__, __LINE__, ## args  );
#else
#	define DPRINTK( x, args... )	/* nix */
#endif

static int system3_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	skt->irq = skt->nr ? IRQ_S1_READY_NINT : IRQ_S0_READY_NINT;

	/* Don't need no CD and BVD* interrupts */
	return 0;
}

void system3_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
{
}

static void
system3_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
{
	unsigned long status = PCSR;

	switch (skt->nr) {
#if 0 /* PCMCIA socket not yet connected */
	case 0:
		state->detect = status & PCSR_S0_DETECT ? 0 : 1;
		state->ready  = status & PCSR_S0_READY  ? 1 : 0;
		state->bvd1   = status & PCSR_S0_BVD1   ? 1 : 0;
		state->bvd2   = 1;
		state->wrprot = status & PCSR_S0_WP     ? 1 : 0;
		state->vs_3v  = 1;
		state->vs_Xv  = 0;
		break;
#endif

	case 1:
		state->detect = status & PCSR_S1_DETECT ? 0 : 1;
		state->ready  = status & PCSR_S1_READY  ? 1 : 0;
		state->bvd1   = status & PCSR_S1_BVD1   ? 1 : 0;
		state->bvd2   = 1;
		state->wrprot = status & PCSR_S1_WP     ? 1 : 0;
		state->vs_3v  = 1;
		state->vs_Xv  = 0;
		break;
	}

	DPRINTK("Sock %d PCSR=0x%08lx, Sx_RDY_nIREQ=%d\n",
		skt->nr, status, state->ready);
}

struct pcmcia_low_level system3_pcmcia_ops = {
	.owner			= THIS_MODULE,
	.init			= system3_pcmcia_hw_init,
	.shutdown		= system3_pcmcia_hw_shutdown,
	.socket_state		= system3_pcmcia_socket_state,
	.configure_socket	= sa1111_pcmcia_configure_socket,

	.socket_init		= sa1111_pcmcia_socket_init,
	.socket_suspend		= sa1111_pcmcia_socket_suspend,
};

int __init pcmcia_system3_init(struct device *dev)
{
	int ret = -ENODEV;

	if (machine_is_pt_system3())
		/* only CF ATM */
		ret = sa11xx_drv_pcmcia_probe(dev, &system3_pcmcia_ops, 1, 1);

	return ret;
}