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/hardware.h>
20 #include <mach/pxa-regs.h>
21 #include <mach/eseries-gpio.h>
24 #include <asm/mach-types.h>
26 #include "soc_common.h"
28 static struct pcmcia_irqs cd_irqs[] = {
31 .irq = IRQ_GPIO(GPIO_E740_PCMCIA_CD0),
32 .str = "CF card detect"
36 .irq = IRQ_GPIO(GPIO_E740_PCMCIA_CD1),
41 static int e740_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
43 skt->irq = skt->nr == 0 ? IRQ_GPIO(GPIO_E740_PCMCIA_RDY0) :
44 IRQ_GPIO(GPIO_E740_PCMCIA_RDY1);
46 return soc_pcmcia_request_irqs(skt, &cd_irqs[skt->nr], 1);
50 * Release all resources.
52 static void e740_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
54 soc_pcmcia_free_irqs(skt, &cd_irqs[skt->nr], 1);
57 static void e740_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
58 struct pcmcia_state *state)
61 state->detect = gpio_get_value(GPIO_E740_PCMCIA_CD0) ? 0 : 1;
62 state->ready = gpio_get_value(GPIO_E740_PCMCIA_RDY0) ? 1 : 0;
64 state->detect = gpio_get_value(GPIO_E740_PCMCIA_CD1) ? 0 : 1;
65 state->ready = gpio_get_value(GPIO_E740_PCMCIA_RDY1) ? 1 : 0;
75 static int e740_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
76 const socket_state_t *state)
78 if (state->flags & SS_RESET) {
80 gpio_set_value(GPIO_E740_PCMCIA_RST0, 1);
82 gpio_set_value(GPIO_E740_PCMCIA_RST1, 1);
85 gpio_set_value(GPIO_E740_PCMCIA_RST0, 0);
87 gpio_set_value(GPIO_E740_PCMCIA_RST1, 0);
91 case 0: /* Socket off */
93 gpio_set_value(GPIO_E740_PCMCIA_PWR0, 0);
95 gpio_set_value(GPIO_E740_PCMCIA_PWR1, 1);
98 case 33: /* socket on */
100 gpio_set_value(GPIO_E740_PCMCIA_PWR0, 1);
102 gpio_set_value(GPIO_E740_PCMCIA_PWR1, 0);
105 printk(KERN_ERR "e740_cs: Unsupported Vcc: %d\n", state->Vcc);
112 * Enable card status IRQs on (re-)initialisation. This can
113 * be called at initialisation, power management event, or
116 static void e740_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
118 soc_pcmcia_enable_irqs(skt, cd_irqs, ARRAY_SIZE(cd_irqs));
122 * Disable card status IRQs on suspend.
124 static void e740_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
126 soc_pcmcia_disable_irqs(skt, cd_irqs, ARRAY_SIZE(cd_irqs));
129 static struct pcmcia_low_level e740_pcmcia_ops = {
130 .owner = THIS_MODULE,
131 .hw_init = e740_pcmcia_hw_init,
132 .hw_shutdown = e740_pcmcia_hw_shutdown,
133 .socket_state = e740_pcmcia_socket_state,
134 .configure_socket = e740_pcmcia_configure_socket,
135 .socket_init = e740_pcmcia_socket_init,
136 .socket_suspend = e740_pcmcia_socket_suspend,
140 static struct platform_device *e740_pcmcia_device;
142 static int __init e740_pcmcia_init(void)
146 if (!machine_is_e740())
149 e740_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
150 if (!e740_pcmcia_device)
153 ret = platform_device_add_data(e740_pcmcia_device, &e740_pcmcia_ops,
154 sizeof(e740_pcmcia_ops));
157 ret = platform_device_add(e740_pcmcia_device);
160 platform_device_put(e740_pcmcia_device);
165 static void __exit e740_pcmcia_exit(void)
167 platform_device_unregister(e740_pcmcia_device);
170 module_init(e740_pcmcia_init);
171 module_exit(e740_pcmcia_exit);
173 MODULE_LICENSE("GPL v2");
174 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
175 MODULE_ALIAS("platform:pxa2xx-pcmcia");
176 MODULE_DESCRIPTION("e740 PCMCIA platform support");