2 * linux/drivers/pcmcia/sa1100_badge4.c
4 * BadgePAD 4 PCMCIA specific routines
6 * Christopher Hoover <ch@hpl.hp.com>
8 * Copyright (C) 2002 Hewlett-Packard Company
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
15 #include <linux/module.h>
16 #include <linux/kernel.h>
17 #include <linux/device.h>
18 #include <linux/errno.h>
19 #include <linux/init.h>
21 #include <mach/hardware.h>
22 #include <asm/mach-types.h>
23 #include <mach/badge4.h>
24 #include <asm/hardware/sa1111.h>
26 #include "sa1111_generic.h"
33 * PCM Vcc on BadgePAD 4 can be jumpered for 3v3 (short pins 1 and 3
34 * on JP6) or 5v0 (short pins 3 and 5 on JP6).
38 * PCM Vpp on BadgePAD 4 can be jumpered for 12v0 (short pins 4 and 6
39 * on JP6) or tied to PCM Vcc (short pins 2 and 4 on JP6). N.B.,
40 * 12v0 operation requires that the power supply actually supply 12v0
45 * CF Vcc on BadgePAD 4 can be jumpered either for 3v3 (short pins 1
46 * and 2 on JP10) or 5v0 (short pins 2 and 3 on JP10).
48 * Unfortunately there's no way programmatically to determine how a
49 * given board is jumpered. This code assumes a default jumpering
52 * If the defaults aren't correct, you may override them with a pcmv
53 * setup argument: pcmv=<pcm vcc>,<pcm vpp>,<cf vcc>. The units are
54 * tenths of volts; e.g. pcmv=33,120,50 indicates 3v3 PCM Vcc, 12v0
55 * PCM Vpp, and 5v0 CF Vcc.
59 static int badge4_pcmvcc
= 50; /* pins 3 and 5 jumpered on JP6 */
60 static int badge4_pcmvpp
= 50; /* pins 2 and 4 jumpered on JP6 */
61 static int badge4_cfvcc
= 33; /* pins 1 and 2 jumpered on JP10 */
63 static void complain_about_jumpering(const char *whom
,
65 int given
, int wanted
)
68 "%s: %s %d.%dV wanted but board is jumpered for %s %d.%dV operation"
69 "; re-jumper the board and/or use pcmv=xx,xx,xx\n",
71 wanted
/ 10, wanted
% 10,
73 given
/ 10, given
% 10);
77 badge4_pcmcia_configure_socket(struct soc_pcmcia_socket
*skt
, const socket_state_t
*state
)
83 if ((state
->Vcc
!= 0) &&
84 (state
->Vcc
!= badge4_pcmvcc
)) {
85 complain_about_jumpering(__func__
, "pcmvcc",
86 badge4_pcmvcc
, state
->Vcc
);
87 // Apply power regardless of the jumpering.
90 if ((state
->Vpp
!= 0) &&
91 (state
->Vpp
!= badge4_pcmvpp
)) {
92 complain_about_jumpering(__func__
, "pcmvpp",
93 badge4_pcmvpp
, state
->Vpp
);
99 if ((state
->Vcc
!= 0) &&
100 (state
->Vcc
!= badge4_cfvcc
)) {
101 complain_about_jumpering(__func__
, "cfvcc",
102 badge4_cfvcc
, state
->Vcc
);
111 ret
= sa1111_pcmcia_configure_socket(skt
, state
);
116 local_irq_save(flags
);
118 need5V
= ((state
->Vcc
== 50) || (state
->Vpp
== 50));
120 badge4_set_5V(BADGE4_5V_PCMCIA_SOCK(skt
->nr
), need5V
);
122 local_irq_restore(flags
);
128 static struct pcmcia_low_level badge4_pcmcia_ops
= {
129 .owner
= THIS_MODULE
,
130 .configure_socket
= badge4_pcmcia_configure_socket
,
135 int pcmcia_badge4_init(struct sa1111_dev
*dev
)
138 "%s: badge4_pcmvcc=%d, badge4_pcmvpp=%d, badge4_cfvcc=%d\n",
140 badge4_pcmvcc
, badge4_pcmvpp
, badge4_cfvcc
);
142 sa11xx_drv_pcmcia_ops(&badge4_pcmcia_ops
);
143 return sa1111_pcmcia_add(dev
, &badge4_pcmcia_ops
,
144 sa11xx_drv_pcmcia_add_one
);
147 static int __init
pcmv_setup(char *s
)
151 s
= get_options(s
, ARRAY_SIZE(v
), v
);
153 if (v
[0] >= 1) badge4_pcmvcc
= v
[1];
154 if (v
[0] >= 2) badge4_pcmvpp
= v
[2];
155 if (v
[0] >= 3) badge4_cfvcc
= v
[3];
160 __setup("pcmv=", pcmv_setup
);