1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Toshiba e740 PCMCIA specific routines.
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * (c) 2004 Ian Molton <spyro@f2s.com>
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <linux/init.h>
9*4882a593Smuzhiyun #include <linux/module.h>
10*4882a593Smuzhiyun #include <linux/kernel.h>
11*4882a593Smuzhiyun #include <linux/errno.h>
12*4882a593Smuzhiyun #include <linux/gpio.h>
13*4882a593Smuzhiyun #include <linux/interrupt.h>
14*4882a593Smuzhiyun #include <linux/platform_device.h>
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun #include <mach/eseries-gpio.h>
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun #include <asm/irq.h>
19*4882a593Smuzhiyun #include <asm/mach-types.h>
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun #include "soc_common.h"
22*4882a593Smuzhiyun
e740_pcmcia_hw_init(struct soc_pcmcia_socket * skt)23*4882a593Smuzhiyun static int e740_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
24*4882a593Smuzhiyun {
25*4882a593Smuzhiyun if (skt->nr == 0) {
26*4882a593Smuzhiyun skt->stat[SOC_STAT_CD].gpio = GPIO_E740_PCMCIA_CD0;
27*4882a593Smuzhiyun skt->stat[SOC_STAT_CD].name = "CF card detect";
28*4882a593Smuzhiyun skt->stat[SOC_STAT_RDY].gpio = GPIO_E740_PCMCIA_RDY0;
29*4882a593Smuzhiyun skt->stat[SOC_STAT_RDY].name = "CF ready";
30*4882a593Smuzhiyun } else {
31*4882a593Smuzhiyun skt->stat[SOC_STAT_CD].gpio = GPIO_E740_PCMCIA_CD1;
32*4882a593Smuzhiyun skt->stat[SOC_STAT_CD].name = "Wifi switch";
33*4882a593Smuzhiyun skt->stat[SOC_STAT_RDY].gpio = GPIO_E740_PCMCIA_RDY1;
34*4882a593Smuzhiyun skt->stat[SOC_STAT_RDY].name = "Wifi ready";
35*4882a593Smuzhiyun }
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun return 0;
38*4882a593Smuzhiyun }
39*4882a593Smuzhiyun
e740_pcmcia_socket_state(struct soc_pcmcia_socket * skt,struct pcmcia_state * state)40*4882a593Smuzhiyun static void e740_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
41*4882a593Smuzhiyun struct pcmcia_state *state)
42*4882a593Smuzhiyun {
43*4882a593Smuzhiyun state->vs_3v = 1;
44*4882a593Smuzhiyun state->vs_Xv = 0;
45*4882a593Smuzhiyun }
46*4882a593Smuzhiyun
e740_pcmcia_configure_socket(struct soc_pcmcia_socket * skt,const socket_state_t * state)47*4882a593Smuzhiyun static int e740_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
48*4882a593Smuzhiyun const socket_state_t *state)
49*4882a593Smuzhiyun {
50*4882a593Smuzhiyun if (state->flags & SS_RESET) {
51*4882a593Smuzhiyun if (skt->nr == 0)
52*4882a593Smuzhiyun gpio_set_value(GPIO_E740_PCMCIA_RST0, 1);
53*4882a593Smuzhiyun else
54*4882a593Smuzhiyun gpio_set_value(GPIO_E740_PCMCIA_RST1, 1);
55*4882a593Smuzhiyun } else {
56*4882a593Smuzhiyun if (skt->nr == 0)
57*4882a593Smuzhiyun gpio_set_value(GPIO_E740_PCMCIA_RST0, 0);
58*4882a593Smuzhiyun else
59*4882a593Smuzhiyun gpio_set_value(GPIO_E740_PCMCIA_RST1, 0);
60*4882a593Smuzhiyun }
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun switch (state->Vcc) {
63*4882a593Smuzhiyun case 0: /* Socket off */
64*4882a593Smuzhiyun if (skt->nr == 0)
65*4882a593Smuzhiyun gpio_set_value(GPIO_E740_PCMCIA_PWR0, 0);
66*4882a593Smuzhiyun else
67*4882a593Smuzhiyun gpio_set_value(GPIO_E740_PCMCIA_PWR1, 1);
68*4882a593Smuzhiyun break;
69*4882a593Smuzhiyun case 50:
70*4882a593Smuzhiyun case 33: /* socket on */
71*4882a593Smuzhiyun if (skt->nr == 0)
72*4882a593Smuzhiyun gpio_set_value(GPIO_E740_PCMCIA_PWR0, 1);
73*4882a593Smuzhiyun else
74*4882a593Smuzhiyun gpio_set_value(GPIO_E740_PCMCIA_PWR1, 0);
75*4882a593Smuzhiyun break;
76*4882a593Smuzhiyun default:
77*4882a593Smuzhiyun printk(KERN_ERR "e740_cs: Unsupported Vcc: %d\n", state->Vcc);
78*4882a593Smuzhiyun }
79*4882a593Smuzhiyun
80*4882a593Smuzhiyun return 0;
81*4882a593Smuzhiyun }
82*4882a593Smuzhiyun
83*4882a593Smuzhiyun static struct pcmcia_low_level e740_pcmcia_ops = {
84*4882a593Smuzhiyun .owner = THIS_MODULE,
85*4882a593Smuzhiyun .hw_init = e740_pcmcia_hw_init,
86*4882a593Smuzhiyun .socket_state = e740_pcmcia_socket_state,
87*4882a593Smuzhiyun .configure_socket = e740_pcmcia_configure_socket,
88*4882a593Smuzhiyun .nr = 2,
89*4882a593Smuzhiyun };
90*4882a593Smuzhiyun
91*4882a593Smuzhiyun static struct platform_device *e740_pcmcia_device;
92*4882a593Smuzhiyun
e740_pcmcia_init(void)93*4882a593Smuzhiyun static int __init e740_pcmcia_init(void)
94*4882a593Smuzhiyun {
95*4882a593Smuzhiyun int ret;
96*4882a593Smuzhiyun
97*4882a593Smuzhiyun if (!machine_is_e740())
98*4882a593Smuzhiyun return -ENODEV;
99*4882a593Smuzhiyun
100*4882a593Smuzhiyun e740_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
101*4882a593Smuzhiyun if (!e740_pcmcia_device)
102*4882a593Smuzhiyun return -ENOMEM;
103*4882a593Smuzhiyun
104*4882a593Smuzhiyun ret = platform_device_add_data(e740_pcmcia_device, &e740_pcmcia_ops,
105*4882a593Smuzhiyun sizeof(e740_pcmcia_ops));
106*4882a593Smuzhiyun
107*4882a593Smuzhiyun if (!ret)
108*4882a593Smuzhiyun ret = platform_device_add(e740_pcmcia_device);
109*4882a593Smuzhiyun
110*4882a593Smuzhiyun if (ret)
111*4882a593Smuzhiyun platform_device_put(e740_pcmcia_device);
112*4882a593Smuzhiyun
113*4882a593Smuzhiyun return ret;
114*4882a593Smuzhiyun }
115*4882a593Smuzhiyun
e740_pcmcia_exit(void)116*4882a593Smuzhiyun static void __exit e740_pcmcia_exit(void)
117*4882a593Smuzhiyun {
118*4882a593Smuzhiyun platform_device_unregister(e740_pcmcia_device);
119*4882a593Smuzhiyun }
120*4882a593Smuzhiyun
121*4882a593Smuzhiyun module_init(e740_pcmcia_init);
122*4882a593Smuzhiyun module_exit(e740_pcmcia_exit);
123*4882a593Smuzhiyun
124*4882a593Smuzhiyun MODULE_LICENSE("GPL v2");
125*4882a593Smuzhiyun MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
126*4882a593Smuzhiyun MODULE_ALIAS("platform:pxa2xx-pcmcia");
127*4882a593Smuzhiyun MODULE_DESCRIPTION("e740 PCMCIA platform support");
128