1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * linux/drivers/pcmcia/pxa2xx_vpac270.c
4 *
5 * Driver for Voipac PXA270 PCMCIA and CF sockets
6 *
7 * Copyright (C) 2010-2011 Marek Vasut <marek.vasut@gmail.com>
8 */
9
10#include <linux/gpio.h>
11#include <linux/module.h>
12#include <linux/platform_device.h>
13
14#include <asm/mach-types.h>
15
16#include <mach/vpac270.h>
17
18#include "soc_common.h"
19
20static struct gpio vpac270_pcmcia_gpios[] = {
21	{ GPIO107_VPAC270_PCMCIA_PPEN,	GPIOF_INIT_LOW,	"PCMCIA PPEN" },
22	{ GPIO11_VPAC270_PCMCIA_RESET,	GPIOF_INIT_LOW,	"PCMCIA Reset" },
23};
24
25static struct gpio vpac270_cf_gpios[] = {
26	{ GPIO16_VPAC270_CF_RESET,	GPIOF_INIT_LOW,	"CF Reset" },
27};
28
29static int vpac270_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
30{
31	int ret;
32
33	if (skt->nr == 0) {
34		ret = gpio_request_array(vpac270_pcmcia_gpios,
35				ARRAY_SIZE(vpac270_pcmcia_gpios));
36
37		skt->stat[SOC_STAT_CD].gpio = GPIO84_VPAC270_PCMCIA_CD;
38		skt->stat[SOC_STAT_CD].name = "PCMCIA CD";
39		skt->stat[SOC_STAT_RDY].gpio = GPIO35_VPAC270_PCMCIA_RDY;
40		skt->stat[SOC_STAT_RDY].name = "PCMCIA Ready";
41	} else {
42		ret = gpio_request_array(vpac270_cf_gpios,
43				ARRAY_SIZE(vpac270_cf_gpios));
44
45		skt->stat[SOC_STAT_CD].gpio = GPIO17_VPAC270_CF_CD;
46		skt->stat[SOC_STAT_CD].name = "CF CD";
47		skt->stat[SOC_STAT_RDY].gpio = GPIO12_VPAC270_CF_RDY;
48		skt->stat[SOC_STAT_RDY].name = "CF Ready";
49	}
50
51	return ret;
52}
53
54static void vpac270_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
55{
56	if (skt->nr == 0)
57		gpio_free_array(vpac270_pcmcia_gpios,
58					ARRAY_SIZE(vpac270_pcmcia_gpios));
59	else
60		gpio_free_array(vpac270_cf_gpios,
61					ARRAY_SIZE(vpac270_cf_gpios));
62}
63
64static void vpac270_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
65					struct pcmcia_state *state)
66{
67	state->vs_3v  = 1;
68	state->vs_Xv  = 0;
69}
70
71static int
72vpac270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
73				const socket_state_t *state)
74{
75	if (skt->nr == 0) {
76		gpio_set_value(GPIO11_VPAC270_PCMCIA_RESET,
77			(state->flags & SS_RESET));
78		gpio_set_value(GPIO107_VPAC270_PCMCIA_PPEN,
79			!(state->Vcc == 33 || state->Vcc == 50));
80	} else {
81		gpio_set_value(GPIO16_VPAC270_CF_RESET,
82			(state->flags & SS_RESET));
83	}
84
85	return 0;
86}
87
88static struct pcmcia_low_level vpac270_pcmcia_ops = {
89	.owner			= THIS_MODULE,
90
91	.first			= 0,
92	.nr			= 2,
93
94	.hw_init		= vpac270_pcmcia_hw_init,
95	.hw_shutdown		= vpac270_pcmcia_hw_shutdown,
96
97	.socket_state		= vpac270_pcmcia_socket_state,
98	.configure_socket	= vpac270_pcmcia_configure_socket,
99};
100
101static struct platform_device *vpac270_pcmcia_device;
102
103static int __init vpac270_pcmcia_init(void)
104{
105	int ret;
106
107	if (!machine_is_vpac270())
108		return -ENODEV;
109
110	vpac270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
111	if (!vpac270_pcmcia_device)
112		return -ENOMEM;
113
114	ret = platform_device_add_data(vpac270_pcmcia_device,
115		&vpac270_pcmcia_ops, sizeof(vpac270_pcmcia_ops));
116
117	if (!ret)
118		ret = platform_device_add(vpac270_pcmcia_device);
119
120	if (ret)
121		platform_device_put(vpac270_pcmcia_device);
122
123	return ret;
124}
125
126static void __exit vpac270_pcmcia_exit(void)
127{
128	platform_device_unregister(vpac270_pcmcia_device);
129}
130
131module_init(vpac270_pcmcia_init);
132module_exit(vpac270_pcmcia_exit);
133
134MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
135MODULE_DESCRIPTION("PCMCIA support for Voipac PXA270");
136MODULE_ALIAS("platform:pxa2xx-pcmcia");
137MODULE_LICENSE("GPL");
138