[linux-2.6-block.git] / drivers / pcmcia / sa1111_badge4.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * linux/drivers/pcmcia/sa1100_badge4.c
 *
 * BadgePAD 4 PCMCIA specific routines
 *
 *   Christopher Hoover <ch@hpl.hp.com>
 *
 * Copyright (C) 2002 Hewlett-Packard Company
 */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/init.h>

#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <mach/badge4.h>
#include <asm/hardware/sa1111.h>

#include "sa1111_generic.h"

/*
 * BadgePAD 4 Details
 *
 * PCM Vcc:
 *
 *  PCM Vcc on BadgePAD 4 can be jumpered for 3v3 (short pins 1 and 3
 *  on JP6) or 5v0 (short pins 3 and 5 on JP6).
 *
 * PCM Vpp:
 *
 *  PCM Vpp on BadgePAD 4 can be jumpered for 12v0 (short pins 4 and 6
 *  on JP6) or tied to PCM Vcc (short pins 2 and 4 on JP6).  N.B.,
 *  12v0 operation requires that the power supply actually supply 12v0
 *  via pin 7 of JP7.
 *
 * CF Vcc:
 *
 *  CF Vcc on BadgePAD 4 can be jumpered either for 3v3 (short pins 1
 *  and 2 on JP10) or 5v0 (short pins 2 and 3 on JP10).
 *
 * Unfortunately there's no way programmatically to determine how a
 * given board is jumpered.  This code assumes a default jumpering
 * as described below.
 *
 * If the defaults aren't correct, you may override them with a pcmv
 * setup argument: pcmv=<pcm vcc>,<pcm vpp>,<cf vcc>.  The units are
 * tenths of volts; e.g. pcmv=33,120,50 indicates 3v3 PCM Vcc, 12v0
 * PCM Vpp, and 5v0 CF Vcc.
 *
 */

static int badge4_pcmvcc = 50;  /* pins 3 and 5 jumpered on JP6 */
static int badge4_pcmvpp = 50;  /* pins 2 and 4 jumpered on JP6 */
static int badge4_cfvcc = 33;   /* pins 1 and 2 jumpered on JP10 */

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 int
badge4_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
{
	int ret;

	switch (skt->nr) {
	case 0:
		if ((state->Vcc != 0) &&
		    (state->Vcc != badge4_pcmvcc)) {
			complain_about_jumpering(__func__, "pcmvcc",
						 badge4_pcmvcc, state->Vcc);
			// Apply power regardless of the jumpering.
			// return -1;
		}
		if ((state->Vpp != 0) &&
		    (state->Vpp != badge4_pcmvpp)) {
			complain_about_jumpering(__func__, "pcmvpp",
						 badge4_pcmvpp, state->Vpp);
			return -1;
		}
		break;

	case 1:
		if ((state->Vcc != 0) &&
		    (state->Vcc != badge4_cfvcc)) {
			complain_about_jumpering(__func__, "cfvcc",
						 badge4_cfvcc, state->Vcc);
			return -1;
		}
		break;

	default:
		return -1;
	}

	ret = sa1111_pcmcia_configure_socket(skt, state);
	if (ret == 0) {
		unsigned long flags;
		int need5V;

		local_irq_save(flags);

		need5V = ((state->Vcc == 50) || (state->Vpp == 50));

		badge4_set_5V(BADGE4_5V_PCMCIA_SOCK(skt->nr), need5V);

		local_irq_restore(flags);
	}

	return ret;
}

static struct pcmcia_low_level badge4_pcmcia_ops = {
	.owner			= THIS_MODULE,
	.configure_socket	= badge4_pcmcia_configure_socket,
	.first			= 0,
	.nr			= 2,
};

int pcmcia_badge4_init(struct sa1111_dev *dev)
{
	printk(KERN_INFO
	       "%s: badge4_pcmvcc=%d, badge4_pcmvpp=%d, badge4_cfvcc=%d\n",
	       __func__,
	       badge4_pcmvcc, badge4_pcmvpp, badge4_cfvcc);

	sa11xx_drv_pcmcia_ops(&badge4_pcmcia_ops);
	return sa1111_pcmcia_add(dev, &badge4_pcmcia_ops,
				 sa11xx_drv_pcmcia_add_one);
}

#ifndef MODULE
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);
#endif
Commit	Line	Data
d2912cb1	1	// SPDX-License-Identifier: GPL-2.0-only
1da177e4 LT	2	/*
	3	* linux/drivers/pcmcia/sa1100_badge4.c
	4	*
	5	* BadgePAD 4 PCMCIA specific routines
	6	*
	7	* Christopher Hoover <ch@hpl.hp.com>
	8	*
	9	* Copyright (C) 2002 Hewlett-Packard Company
1da177e4 LT	10	*/
	11	#include <linux/module.h>
	12	#include <linux/kernel.h>
1da177e4 LT	13	#include <linux/device.h>
	14	#include <linux/errno.h>
	15	#include <linux/init.h>
	16
a09e64fb	17	#include <mach/hardware.h>
1da177e4	18	#include <asm/mach-types.h>
a09e64fb	19	#include <mach/badge4.h>
1da177e4 LT	20	#include <asm/hardware/sa1111.h>
	21
	22	#include "sa1111_generic.h"
	23
	24	/*
	25	* BadgePAD 4 Details
	26	*
	27	* PCM Vcc:
	28	*
	29	* PCM Vcc on BadgePAD 4 can be jumpered for 3v3 (short pins 1 and 3
	30	* on JP6) or 5v0 (short pins 3 and 5 on JP6).
	31	*
	32	* PCM Vpp:
	33	*
	34	* PCM Vpp on BadgePAD 4 can be jumpered for 12v0 (short pins 4 and 6
	35	* on JP6) or tied to PCM Vcc (short pins 2 and 4 on JP6). N.B.,
	36	* 12v0 operation requires that the power supply actually supply 12v0
	37	* via pin 7 of JP7.
	38	*
	39	* CF Vcc:
	40	*
	41	* CF Vcc on BadgePAD 4 can be jumpered either for 3v3 (short pins 1
	42	* and 2 on JP10) or 5v0 (short pins 2 and 3 on JP10).
	43	*
	44	* Unfortunately there's no way programmatically to determine how a
	45	* given board is jumpered. This code assumes a default jumpering
	46	* as described below.
	47	*
	48	* If the defaults aren't correct, you may override them with a pcmv
	49	* setup argument: pcmv=<pcm vcc>,<pcm vpp>,<cf vcc>. The units are
	50	* tenths of volts; e.g. pcmv=33,120,50 indicates 3v3 PCM Vcc, 12v0
	51	* PCM Vpp, and 5v0 CF Vcc.
	52	*
	53	*/
	54
	55	static int badge4_pcmvcc = 50; /* pins 3 and 5 jumpered on JP6 */
	56	static int badge4_pcmvpp = 50; /* pins 2 and 4 jumpered on JP6 */
	57	static int badge4_cfvcc = 33; /* pins 1 and 2 jumpered on JP10 */
	58
	59	static void complain_about_jumpering(const char *whom,
	60	const char *supply,
	61	int given, int wanted)
	62	{
	63	printk(KERN_ERR
	64	"%s: %s %d.%dV wanted but board is jumpered for %s %d.%dV operation"
	65	"; re-jumper the board and/or use pcmv=xx,xx,xx\n",
	66	whom, supply,
	67	wanted / 10, wanted % 10,
	68	supply,
	69	given / 10, given % 10);
	70	}
	71
	72	static int
	73	badge4_pcmcia_configure_socket(struct soc_pcmcia_socket skt, const socket_state_t state)
	74	{
	75	int ret;
	76
	77	switch (skt->nr) {
	78	case 0:
	79	if ((state->Vcc != 0) &&
	80	(state->Vcc != badge4_pcmvcc)) {
2e11cb4c	81	complain_about_jumpering(__func__, "pcmvcc",
1da177e4 LT	82	badge4_pcmvcc, state->Vcc);
	83	// Apply power regardless of the jumpering.
	84	// return -1;
	85	}
	86	if ((state->Vpp != 0) &&
	87	(state->Vpp != badge4_pcmvpp)) {
2e11cb4c	88	complain_about_jumpering(__func__, "pcmvpp",
1da177e4 LT	89	badge4_pcmvpp, state->Vpp);
	90	return -1;
	91	}
	92	break;
	93
	94	case 1:
	95	if ((state->Vcc != 0) &&
	96	(state->Vcc != badge4_cfvcc)) {
2e11cb4c	97	complain_about_jumpering(__func__, "cfvcc",
1da177e4 LT	98	badge4_cfvcc, state->Vcc);
	99	return -1;
	100	}
	101	break;
	102
	103	default:
	104	return -1;
	105	}
	106
	107	ret = sa1111_pcmcia_configure_socket(skt, state);
	108	if (ret == 0) {
	109	unsigned long flags;
	110	int need5V;
	111
	112	local_irq_save(flags);
	113
	114	need5V = ((state->Vcc == 50) \|\| (state->Vpp == 50));
	115
	116	badge4_set_5V(BADGE4_5V_PCMCIA_SOCK(skt->nr), need5V);
	117
	118	local_irq_restore(flags);
	119	}
	120
65c77dca	121	return ret;
1da177e4 LT	122	}
	123
	124	static struct pcmcia_low_level badge4_pcmcia_ops = {
	125	.owner = THIS_MODULE,
1da177e4	126	.configure_socket = badge4_pcmcia_configure_socket,
701a5dc0 RKAL	127	.first = 0,
701a5dc0 RKAL	128	.nr = 2,
1da177e4 LT	129	};
1da177e4 LT	130
cfd1f008	131	int pcmcia_badge4_init(struct sa1111_dev *dev)
1da177e4	132	{
3f8df892 RK	133	printk(KERN_INFO
	134	"%s: badge4_pcmvcc=%d, badge4_pcmvpp=%d, badge4_cfvcc=%d\n",
	135	__func__,
	136	badge4_pcmvcc, badge4_pcmvpp, badge4_cfvcc);
	137
	138	sa11xx_drv_pcmcia_ops(&badge4_pcmcia_ops);
	139	return sa1111_pcmcia_add(dev, &badge4_pcmcia_ops,
	140	sa11xx_drv_pcmcia_add_one);
1da177e4 LT	141	}
1da177e4 LT	142
d4258247	143	#ifndef MODULE
1da177e4 LT	144	static int __init pcmv_setup(char *s)
	145	{
	146	int v[4];
	147
	148	s = get_options(s, ARRAY_SIZE(v), v);
	149
	150	if (v[0] >= 1) badge4_pcmvcc = v[1];
	151	if (v[0] >= 2) badge4_pcmvpp = v[2];
	152	if (v[0] >= 3) badge4_cfvcc = v[3];
	153
	154	return 1;
	155	}
	156
	157	__setup("pcmv=", pcmv_setup);
d4258247	158	#endif