2 * Toshiba e740 PCMCIA specific routines.
4 * (c) 2004 Ian Molton <spyro@f2s.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
11 #include <linux/init.h>
12 #include <linux/module.h>
13 #include <linux/kernel.h>
14 #include <linux/errno.h>
15 #include <linux/gpio.h>
16 #include <linux/interrupt.h>
17 #include <linux/platform_device.h>
19 #include <mach/eseries-gpio.h>
22 #include <asm/mach-types.h>
24 #include "soc_common.h"
26 static struct pcmcia_irqs cd_irqs[] = {
29 .str = "CF card detect"
37 static int e740_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
40 skt->socket.pci_irq = gpio_to_irq(GPIO_E740_PCMCIA_RDY0);
42 skt->socket.pci_irq = gpio_to_irq(GPIO_E740_PCMCIA_RDY1);
44 cd_irqs[0].irq = gpio_to_irq(GPIO_E740_PCMCIA_CD0);
45 cd_irqs[1].irq = gpio_to_irq(GPIO_E740_PCMCIA_CD1);
47 return soc_pcmcia_request_irqs(skt, &cd_irqs[skt->nr], 1);
51 * Release all resources.
53 static void e740_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
55 soc_pcmcia_free_irqs(skt, &cd_irqs[skt->nr], 1);
58 static void e740_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
59 struct pcmcia_state *state)
62 state->detect = gpio_get_value(GPIO_E740_PCMCIA_CD0) ? 0 : 1;
63 state->ready = gpio_get_value(GPIO_E740_PCMCIA_RDY0) ? 1 : 0;
65 state->detect = gpio_get_value(GPIO_E740_PCMCIA_CD1) ? 0 : 1;
66 state->ready = gpio_get_value(GPIO_E740_PCMCIA_RDY1) ? 1 : 0;
76 static int e740_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
77 const socket_state_t *state)
79 if (state->flags & SS_RESET) {
81 gpio_set_value(GPIO_E740_PCMCIA_RST0, 1);
83 gpio_set_value(GPIO_E740_PCMCIA_RST1, 1);
86 gpio_set_value(GPIO_E740_PCMCIA_RST0, 0);
88 gpio_set_value(GPIO_E740_PCMCIA_RST1, 0);
92 case 0: /* Socket off */
94 gpio_set_value(GPIO_E740_PCMCIA_PWR0, 0);
96 gpio_set_value(GPIO_E740_PCMCIA_PWR1, 1);
99 case 33: /* socket on */
101 gpio_set_value(GPIO_E740_PCMCIA_PWR0, 1);
103 gpio_set_value(GPIO_E740_PCMCIA_PWR1, 0);
106 printk(KERN_ERR "e740_cs: Unsupported Vcc: %d\n", state->Vcc);
113 * Enable card status IRQs on (re-)initialisation. This can
114 * be called at initialisation, power management event, or
117 static void e740_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
119 soc_pcmcia_enable_irqs(skt, cd_irqs, ARRAY_SIZE(cd_irqs));
123 * Disable card status IRQs on suspend.
125 static void e740_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
127 soc_pcmcia_disable_irqs(skt, cd_irqs, ARRAY_SIZE(cd_irqs));
130 static struct pcmcia_low_level e740_pcmcia_ops = {
131 .owner = THIS_MODULE,
132 .hw_init = e740_pcmcia_hw_init,
133 .hw_shutdown = e740_pcmcia_hw_shutdown,
134 .socket_state = e740_pcmcia_socket_state,
135 .configure_socket = e740_pcmcia_configure_socket,
136 .socket_init = e740_pcmcia_socket_init,
137 .socket_suspend = e740_pcmcia_socket_suspend,
141 static struct platform_device *e740_pcmcia_device;
143 static int __init e740_pcmcia_init(void)
147 if (!machine_is_e740())
150 e740_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
151 if (!e740_pcmcia_device)
154 ret = platform_device_add_data(e740_pcmcia_device, &e740_pcmcia_ops,
155 sizeof(e740_pcmcia_ops));
158 ret = platform_device_add(e740_pcmcia_device);
161 platform_device_put(e740_pcmcia_device);
166 static void __exit e740_pcmcia_exit(void)
168 platform_device_unregister(e740_pcmcia_device);
171 module_init(e740_pcmcia_init);
172 module_exit(e740_pcmcia_exit);
174 MODULE_LICENSE("GPL v2");
175 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
176 MODULE_ALIAS("platform:pxa2xx-pcmcia");
177 MODULE_DESCRIPTION("e740 PCMCIA platform support");