1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Toshiba e740 PCMCIA specific routines.
4 *
5 * (c) 2004 Ian Molton <spyro@f2s.com>
6 */
7
8#include <linux/init.h>
9#include <linux/module.h>
10#include <linux/kernel.h>
11#include <linux/errno.h>
12#include <linux/gpio.h>
13#include <linux/interrupt.h>
14#include <linux/platform_device.h>
15
16#include <mach/eseries-gpio.h>
17
18#include <asm/irq.h>
19#include <asm/mach-types.h>
20
21#include "soc_common.h"
22
23static int e740_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
24{
25	if (skt->nr == 0) {
26		skt->stat[SOC_STAT_CD].gpio = GPIO_E740_PCMCIA_CD0;
27		skt->stat[SOC_STAT_CD].name = "CF card detect";
28		skt->stat[SOC_STAT_RDY].gpio = GPIO_E740_PCMCIA_RDY0;
29		skt->stat[SOC_STAT_RDY].name = "CF ready";
30	} else {
31		skt->stat[SOC_STAT_CD].gpio = GPIO_E740_PCMCIA_CD1;
32		skt->stat[SOC_STAT_CD].name = "Wifi switch";
33		skt->stat[SOC_STAT_RDY].gpio = GPIO_E740_PCMCIA_RDY1;
34		skt->stat[SOC_STAT_RDY].name = "Wifi ready";
35	}
36
37	return 0;
38}
39
40static void e740_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
41					struct pcmcia_state *state)
42{
43	state->vs_3v  = 1;
44	state->vs_Xv  = 0;
45}
46
47static int e740_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
48					const socket_state_t *state)
49{
50	if (state->flags & SS_RESET) {
51		if (skt->nr == 0)
52			gpio_set_value(GPIO_E740_PCMCIA_RST0, 1);
53		else
54			gpio_set_value(GPIO_E740_PCMCIA_RST1, 1);
55	} else {
56		if (skt->nr == 0)
57			gpio_set_value(GPIO_E740_PCMCIA_RST0, 0);
58		else
59			gpio_set_value(GPIO_E740_PCMCIA_RST1, 0);
60	}
61
62	switch (state->Vcc) {
63	case 0:	/* Socket off */
64		if (skt->nr == 0)
65			gpio_set_value(GPIO_E740_PCMCIA_PWR0, 0);
66		else
67			gpio_set_value(GPIO_E740_PCMCIA_PWR1, 1);
68		break;
69	case 50:
70	case 33: /* socket on */
71		if (skt->nr == 0)
72			gpio_set_value(GPIO_E740_PCMCIA_PWR0, 1);
73		else
74			gpio_set_value(GPIO_E740_PCMCIA_PWR1, 0);
75		break;
76	default:
77		printk(KERN_ERR "e740_cs: Unsupported Vcc: %d\n", state->Vcc);
78	}
79
80	return 0;
81}
82
83static struct pcmcia_low_level e740_pcmcia_ops = {
84	.owner            = THIS_MODULE,
85	.hw_init          = e740_pcmcia_hw_init,
86	.socket_state     = e740_pcmcia_socket_state,
87	.configure_socket = e740_pcmcia_configure_socket,
88	.nr               = 2,
89};
90
91static struct platform_device *e740_pcmcia_device;
92
93static int __init e740_pcmcia_init(void)
94{
95	int ret;
96
97	if (!machine_is_e740())
98		return -ENODEV;
99
100	e740_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
101	if (!e740_pcmcia_device)
102		return -ENOMEM;
103
104	ret = platform_device_add_data(e740_pcmcia_device, &e740_pcmcia_ops,
105					sizeof(e740_pcmcia_ops));
106
107	if (!ret)
108		ret = platform_device_add(e740_pcmcia_device);
109
110	if (ret)
111		platform_device_put(e740_pcmcia_device);
112
113	return ret;
114}
115
116static void __exit e740_pcmcia_exit(void)
117{
118	platform_device_unregister(e740_pcmcia_device);
119}
120
121module_init(e740_pcmcia_init);
122module_exit(e740_pcmcia_exit);
123
124MODULE_LICENSE("GPL v2");
125MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
126MODULE_ALIAS("platform:pxa2xx-pcmcia");
127MODULE_DESCRIPTION("e740 PCMCIA platform support");
128