3f8df892b2
When testing Lubbock, it was noticed that the sa1111 pcmcia driver bound but was not functional due to no sockets being registered. This is because the return code from the lowlevel board initialisation was not being propagated out of the probe function. Fix this. Tested-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
160 lines
3.9 KiB
C
160 lines
3.9 KiB
C
/*
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* linux/drivers/pcmcia/sa1100_badge4.c
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*
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* BadgePAD 4 PCMCIA specific routines
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*
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* Christopher Hoover <ch@hpl.hp.com>
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*
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* Copyright (C) 2002 Hewlett-Packard Company
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <mach/hardware.h>
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#include <asm/mach-types.h>
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#include <mach/badge4.h>
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#include <asm/hardware/sa1111.h>
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#include "sa1111_generic.h"
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/*
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* BadgePAD 4 Details
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*
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* PCM Vcc:
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*
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* PCM Vcc on BadgePAD 4 can be jumpered for 3v3 (short pins 1 and 3
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* on JP6) or 5v0 (short pins 3 and 5 on JP6).
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*
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* PCM Vpp:
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*
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* PCM Vpp on BadgePAD 4 can be jumpered for 12v0 (short pins 4 and 6
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* on JP6) or tied to PCM Vcc (short pins 2 and 4 on JP6). N.B.,
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* 12v0 operation requires that the power supply actually supply 12v0
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* via pin 7 of JP7.
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*
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* CF Vcc:
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*
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* CF Vcc on BadgePAD 4 can be jumpered either for 3v3 (short pins 1
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* and 2 on JP10) or 5v0 (short pins 2 and 3 on JP10).
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*
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* Unfortunately there's no way programmatically to determine how a
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* given board is jumpered. This code assumes a default jumpering
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* as described below.
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*
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* If the defaults aren't correct, you may override them with a pcmv
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* setup argument: pcmv=<pcm vcc>,<pcm vpp>,<cf vcc>. The units are
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* tenths of volts; e.g. pcmv=33,120,50 indicates 3v3 PCM Vcc, 12v0
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* PCM Vpp, and 5v0 CF Vcc.
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*
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*/
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static int badge4_pcmvcc = 50; /* pins 3 and 5 jumpered on JP6 */
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static int badge4_pcmvpp = 50; /* pins 2 and 4 jumpered on JP6 */
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static int badge4_cfvcc = 33; /* pins 1 and 2 jumpered on JP10 */
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static void complain_about_jumpering(const char *whom,
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const char *supply,
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int given, int wanted)
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{
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printk(KERN_ERR
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"%s: %s %d.%dV wanted but board is jumpered for %s %d.%dV operation"
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"; re-jumper the board and/or use pcmv=xx,xx,xx\n",
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whom, supply,
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wanted / 10, wanted % 10,
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supply,
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given / 10, given % 10);
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}
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static int
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badge4_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
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{
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int ret;
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switch (skt->nr) {
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case 0:
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if ((state->Vcc != 0) &&
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(state->Vcc != badge4_pcmvcc)) {
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complain_about_jumpering(__func__, "pcmvcc",
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badge4_pcmvcc, state->Vcc);
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// Apply power regardless of the jumpering.
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// return -1;
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}
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if ((state->Vpp != 0) &&
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(state->Vpp != badge4_pcmvpp)) {
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complain_about_jumpering(__func__, "pcmvpp",
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badge4_pcmvpp, state->Vpp);
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return -1;
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}
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break;
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case 1:
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if ((state->Vcc != 0) &&
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(state->Vcc != badge4_cfvcc)) {
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complain_about_jumpering(__func__, "cfvcc",
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badge4_cfvcc, state->Vcc);
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return -1;
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}
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break;
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default:
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return -1;
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}
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ret = sa1111_pcmcia_configure_socket(skt, state);
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if (ret == 0) {
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unsigned long flags;
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int need5V;
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local_irq_save(flags);
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need5V = ((state->Vcc == 50) || (state->Vpp == 50));
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badge4_set_5V(BADGE4_5V_PCMCIA_SOCK(skt->nr), need5V);
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local_irq_restore(flags);
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}
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return ret;
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}
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static struct pcmcia_low_level badge4_pcmcia_ops = {
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.owner = THIS_MODULE,
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.configure_socket = badge4_pcmcia_configure_socket,
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.first = 0,
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.nr = 2,
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};
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int pcmcia_badge4_init(struct sa1111_dev *dev)
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{
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printk(KERN_INFO
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"%s: badge4_pcmvcc=%d, badge4_pcmvpp=%d, badge4_cfvcc=%d\n",
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__func__,
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badge4_pcmvcc, badge4_pcmvpp, badge4_cfvcc);
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sa11xx_drv_pcmcia_ops(&badge4_pcmcia_ops);
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return sa1111_pcmcia_add(dev, &badge4_pcmcia_ops,
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sa11xx_drv_pcmcia_add_one);
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}
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static int __init pcmv_setup(char *s)
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{
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int v[4];
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s = get_options(s, ARRAY_SIZE(v), v);
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if (v[0] >= 1) badge4_pcmvcc = v[1];
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if (v[0] >= 2) badge4_pcmvpp = v[2];
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if (v[0] >= 3) badge4_cfvcc = v[3];
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return 1;
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}
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__setup("pcmv=", pcmv_setup);
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