1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * linux/drivers/pcmcia/pxa2xx_palmld.c
4 *
5 * Driver for Palm LifeDrive PCMCIA
6 *
7 * Copyright (C) 2006 Alex Osborne <ato@meshy.org>
8 * Copyright (C) 2007-2011 Marek Vasut <marek.vasut@gmail.com>
9 */
10
11#include <linux/module.h>
12#include <linux/platform_device.h>
13#include <linux/gpio.h>
14
15#include <asm/mach-types.h>
16#include <mach/palmld.h>
17#include "soc_common.h"
18
19static struct gpio palmld_pcmcia_gpios[] = {
20	{ GPIO_NR_PALMLD_PCMCIA_POWER,	GPIOF_INIT_LOW,	"PCMCIA Power" },
21	{ GPIO_NR_PALMLD_PCMCIA_RESET,	GPIOF_INIT_HIGH,"PCMCIA Reset" },
22};
23
24static int palmld_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
25{
26	int ret;
27
28	ret = gpio_request_array(palmld_pcmcia_gpios,
29				ARRAY_SIZE(palmld_pcmcia_gpios));
30
31	skt->stat[SOC_STAT_RDY].gpio = GPIO_NR_PALMLD_PCMCIA_READY;
32	skt->stat[SOC_STAT_RDY].name = "PCMCIA Ready";
33
34	return ret;
35}
36
37static void palmld_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
38{
39	gpio_free_array(palmld_pcmcia_gpios, ARRAY_SIZE(palmld_pcmcia_gpios));
40}
41
42static void palmld_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
43					struct pcmcia_state *state)
44{
45	state->detect = 1; /* always inserted */
46	state->vs_3v  = 1;
47	state->vs_Xv  = 0;
48}
49
50static int palmld_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
51					const socket_state_t *state)
52{
53	gpio_set_value(GPIO_NR_PALMLD_PCMCIA_POWER, 1);
54	gpio_set_value(GPIO_NR_PALMLD_PCMCIA_RESET,
55			!!(state->flags & SS_RESET));
56
57	return 0;
58}
59
60static struct pcmcia_low_level palmld_pcmcia_ops = {
61	.owner			= THIS_MODULE,
62
63	.first			= 1,
64	.nr			= 1,
65
66	.hw_init		= palmld_pcmcia_hw_init,
67	.hw_shutdown		= palmld_pcmcia_hw_shutdown,
68
69	.socket_state		= palmld_pcmcia_socket_state,
70	.configure_socket	= palmld_pcmcia_configure_socket,
71};
72
73static struct platform_device *palmld_pcmcia_device;
74
75static int __init palmld_pcmcia_init(void)
76{
77	int ret;
78
79	if (!machine_is_palmld())
80		return -ENODEV;
81
82	palmld_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
83	if (!palmld_pcmcia_device)
84		return -ENOMEM;
85
86	ret = platform_device_add_data(palmld_pcmcia_device, &palmld_pcmcia_ops,
87					sizeof(palmld_pcmcia_ops));
88
89	if (!ret)
90		ret = platform_device_add(palmld_pcmcia_device);
91
92	if (ret)
93		platform_device_put(palmld_pcmcia_device);
94
95	return ret;
96}
97
98static void __exit palmld_pcmcia_exit(void)
99{
100	platform_device_unregister(palmld_pcmcia_device);
101}
102
103module_init(palmld_pcmcia_init);
104module_exit(palmld_pcmcia_exit);
105
106MODULE_AUTHOR("Alex Osborne <ato@meshy.org>,"
107	    " Marek Vasut <marek.vasut@gmail.com>");
108MODULE_DESCRIPTION("PCMCIA support for Palm LifeDrive");
109MODULE_ALIAS("platform:pxa2xx-pcmcia");
110MODULE_LICENSE("GPL");
111