2 * linux/drivers/pcmcia/pxa2xx_stargate2.c
4 * Stargate 2 PCMCIA specific routines.
6 * Created: December 6, 2005
8 * Copyright: Intel Corp 2005
9 * Jonathan Cameron <jic23@cam.ac.uk> 2009
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
16 #include <linux/module.h>
17 #include <linux/init.h>
18 #include <linux/kernel.h>
19 #include <linux/interrupt.h>
20 #include <linux/delay.h>
21 #include <linux/platform_device.h>
22 #include <linux/gpio.h>
24 #include <pcmcia/ss.h>
27 #include <asm/mach-types.h>
29 #include "soc_common.h"
31 #define SG2_S0_POWER_CTL 108
32 #define SG2_S0_GPIO_RESET 82
33 #define SG2_S0_GPIO_DETECT 53
34 #define SG2_S0_GPIO_READY 81
36 static struct gpio sg2_pcmcia_gpios[] = {
37 { SG2_S0_GPIO_RESET, GPIOF_OUT_INIT_HIGH, "PCMCIA Reset" },
38 { SG2_S0_POWER_CTL, GPIOF_OUT_INIT_HIGH, "PCMCIA Power Ctrl" },
41 static int sg2_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
43 skt->stat[SOC_STAT_CD].gpio = SG2_S0_GPIO_DETECT;
44 skt->stat[SOC_STAT_CD].name = "PCMCIA0 CD";
45 skt->stat[SOC_STAT_RDY].gpio = SG2_S0_GPIO_READY;
46 skt->stat[SOC_STAT_RDY].name = "PCMCIA0 RDY";
50 static void sg2_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
51 struct pcmcia_state *state)
53 state->bvd1 = 0; /* not available - battery detect on card */
54 state->bvd2 = 0; /* not available */
55 state->vs_3v = 1; /* not available - voltage detect for card */
56 state->vs_Xv = 0; /* not available */
59 static int sg2_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
60 const socket_state_t *state)
62 /* Enable card power */
65 /* sets power ctl register high */
66 gpio_set_value(SG2_S0_POWER_CTL, 1);
70 /* sets power control register low (clear) */
71 gpio_set_value(SG2_S0_POWER_CTL, 0);
75 pr_err("%s(): bad Vcc %u\n",
76 __func__, state->Vcc);
81 gpio_set_value(SG2_S0_GPIO_RESET, !!(state->flags & SS_RESET));
86 static struct pcmcia_low_level sg2_pcmcia_ops __initdata = {
88 .hw_init = sg2_pcmcia_hw_init,
89 .socket_state = sg2_pcmcia_socket_state,
90 .configure_socket = sg2_pcmcia_configure_socket,
94 static struct platform_device *sg2_pcmcia_device;
96 static int __init sg2_pcmcia_init(void)
100 if (!machine_is_stargate2())
103 sg2_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
104 if (!sg2_pcmcia_device)
107 ret = gpio_request_array(sg2_pcmcia_gpios, ARRAY_SIZE(sg2_pcmcia_gpios));
109 goto error_put_platform_device;
111 ret = platform_device_add_data(sg2_pcmcia_device,
113 sizeof(sg2_pcmcia_ops));
115 goto error_free_gpios;
117 ret = platform_device_add(sg2_pcmcia_device);
119 goto error_free_gpios;
123 gpio_free_array(sg2_pcmcia_gpios, ARRAY_SIZE(sg2_pcmcia_gpios));
124 error_put_platform_device:
125 platform_device_put(sg2_pcmcia_device);
130 static void __exit sg2_pcmcia_exit(void)
132 platform_device_unregister(sg2_pcmcia_device);
133 gpio_free_array(sg2_pcmcia_gpios, ARRAY_SIZE(sg2_pcmcia_gpios));
136 fs_initcall(sg2_pcmcia_init);
137 module_exit(sg2_pcmcia_exit);
139 MODULE_LICENSE("GPL");
140 MODULE_ALIAS("platform:pxa2xx-pcmcia");