[mirror_ubuntu-artful-kernel.git] / drivers / pcmcia / pxa2xx_e740.c

/*
 * Toshiba e740 PCMCIA specific routines.
 *
 * (c) 2004 Ian Molton <spyro@f2s.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/gpio.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>

#include <mach/hardware.h>
#include <mach/pxa-regs.h>
#include <mach/eseries-gpio.h>

#include <asm/irq.h>
#include <asm/mach-types.h>

#include "soc_common.h"

static struct pcmcia_irqs cd_irqs[] = {
	{
		.sock = 0,
		.irq  = IRQ_GPIO(GPIO_E740_PCMCIA_CD0),
		.str  = "CF card detect"
	},
	{
		.sock = 1,
		.irq  = IRQ_GPIO(GPIO_E740_PCMCIA_CD1),
		.str  = "Wifi switch"
	},
};

static int e740_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	skt->irq = skt->nr == 0 ? IRQ_GPIO(GPIO_E740_PCMCIA_RDY0) :
				IRQ_GPIO(GPIO_E740_PCMCIA_RDY1);

	return soc_pcmcia_request_irqs(skt, &cd_irqs[skt->nr], 1);
}

/*
 * Release all resources.
 */
static void e740_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
{
	soc_pcmcia_free_irqs(skt, &cd_irqs[skt->nr], 1);
}

static void e740_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
					struct pcmcia_state *state)
{
	if (skt->nr == 0) {
		state->detect = gpio_get_value(GPIO_E740_PCMCIA_CD0) ? 0 : 1;
		state->ready  = gpio_get_value(GPIO_E740_PCMCIA_RDY0) ? 1 : 0;
	} else {
		state->detect = gpio_get_value(GPIO_E740_PCMCIA_CD1) ? 0 : 1;
		state->ready  = gpio_get_value(GPIO_E740_PCMCIA_RDY1) ? 1 : 0;
	}

	state->vs_3v  = 1;
	state->bvd1   = 1;
	state->bvd2   = 1;
	state->wrprot = 0;
	state->vs_Xv  = 0;
}

static int e740_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
					const socket_state_t *state)
{
	if (state->flags & SS_RESET) {
		if (skt->nr == 0)
			gpio_set_value(GPIO_E740_PCMCIA_RST0, 1);
		else
			gpio_set_value(GPIO_E740_PCMCIA_RST1, 1);
	} else {
		if (skt->nr == 0)
			gpio_set_value(GPIO_E740_PCMCIA_RST0, 0);
		else
			gpio_set_value(GPIO_E740_PCMCIA_RST1, 0);
	}

	switch (state->Vcc) {
	case 0:	/* Socket off */
		if (skt->nr == 0)
			gpio_set_value(GPIO_E740_PCMCIA_PWR0, 0);
		else
			gpio_set_value(GPIO_E740_PCMCIA_PWR1, 1);
		break;
	case 50:
	case 33: /* socket on */
		if (skt->nr == 0)
			gpio_set_value(GPIO_E740_PCMCIA_PWR0, 1);
		else
			gpio_set_value(GPIO_E740_PCMCIA_PWR1, 0);
		break;
	default:
		printk(KERN_ERR "e740_cs: Unsupported Vcc: %d\n", state->Vcc);
	}

	return 0;
}

/*
 * Enable card status IRQs on (re-)initialisation.  This can
 * be called at initialisation, power management event, or
 * pcmcia event.
 */
static void e740_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
{
	soc_pcmcia_enable_irqs(skt, cd_irqs, ARRAY_SIZE(cd_irqs));
}

/*
 * Disable card status IRQs on suspend.
 */
static void e740_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
{
	soc_pcmcia_disable_irqs(skt, cd_irqs, ARRAY_SIZE(cd_irqs));
}

static struct pcmcia_low_level e740_pcmcia_ops = {
	.owner            = THIS_MODULE,
	.hw_init          = e740_pcmcia_hw_init,
	.hw_shutdown      = e740_pcmcia_hw_shutdown,
	.socket_state     = e740_pcmcia_socket_state,
	.configure_socket = e740_pcmcia_configure_socket,
	.socket_init      = e740_pcmcia_socket_init,
	.socket_suspend   = e740_pcmcia_socket_suspend,
	.nr               = 2,
};

static struct platform_device *e740_pcmcia_device;

static int __init e740_pcmcia_init(void)
{
	int ret;

	if (!machine_is_e740())
		return -ENODEV;

	e740_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
	if (!e740_pcmcia_device)
		return -ENOMEM;

	ret = platform_device_add_data(e740_pcmcia_device, &e740_pcmcia_ops,
					sizeof(e740_pcmcia_ops));

	if (!ret)
		ret = platform_device_add(e740_pcmcia_device);

	if (ret)
		platform_device_put(e740_pcmcia_device);

	return ret;
}

static void __exit e740_pcmcia_exit(void)
{
	platform_device_unregister(e740_pcmcia_device);
}

module_init(e740_pcmcia_init);
module_exit(e740_pcmcia_exit);

MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
MODULE_ALIAS("platform:pxa2xx-pcmcia");
MODULE_DESCRIPTION("e740 PCMCIA platform support");
Commit	Line	Data
e38a9707 IM	1	/*
	2	* Toshiba e740 PCMCIA specific routines.
	3	*
	4	* (c) 2004 Ian Molton <spyro@f2s.com>
	5	*
	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.
	9	*/
	10
	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>
	18
	19	#include <mach/hardware.h>
	20	#include <mach/pxa-regs.h>
	21	#include <mach/eseries-gpio.h>
	22
	23	#include <asm/irq.h>
	24	#include <asm/mach-types.h>
	25
	26	#include "soc_common.h"
	27
	28	static struct pcmcia_irqs cd_irqs[] = {
	29	{
	30	.sock = 0,
	31	.irq = IRQ_GPIO(GPIO_E740_PCMCIA_CD0),
	32	.str = "CF card detect"
	33	},
	34	{
	35	.sock = 1,
	36	.irq = IRQ_GPIO(GPIO_E740_PCMCIA_CD1),
	37	.str = "Wifi switch"
	38	},
	39	};
	40
	41	static int e740_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
	42	{
	43	skt->irq = skt->nr == 0 ? IRQ_GPIO(GPIO_E740_PCMCIA_RDY0) :
	44	IRQ_GPIO(GPIO_E740_PCMCIA_RDY1);
	45
	46	return soc_pcmcia_request_irqs(skt, &cd_irqs[skt->nr], 1);
	47	}
	48
	49	/*
	50	* Release all resources.
	51	*/
	52	static void e740_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
	53	{
	54	soc_pcmcia_free_irqs(skt, &cd_irqs[skt->nr], 1);
	55	}
	56
	57	static void e740_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
	58	struct pcmcia_state *state)
	59	{
	60	if (skt->nr == 0) {
	61	state->detect = gpio_get_value(GPIO_E740_PCMCIA_CD0) ? 0 : 1;
	62	state->ready = gpio_get_value(GPIO_E740_PCMCIA_RDY0) ? 1 : 0;
	63	} else {
	64	state->detect = gpio_get_value(GPIO_E740_PCMCIA_CD1) ? 0 : 1;
65	state->ready = gpio_get_value(GPIO_E740_PCMCIA_RDY1) ? 1 : 0;
66	}
67
68	state->vs_3v = 1;
69	state->bvd1 = 1;
70	state->bvd2 = 1;
71	state->wrprot = 0;
72	state->vs_Xv = 0;
73	}
74
75	static int e740_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
76	const socket_state_t *state)
77	{
78	if (state->flags & SS_RESET) {
79	if (skt->nr == 0)
80	gpio_set_value(GPIO_E740_PCMCIA_RST0, 1);
81	else
82	gpio_set_value(GPIO_E740_PCMCIA_RST1, 1);
83	} else {
84	if (skt->nr == 0)
85	gpio_set_value(GPIO_E740_PCMCIA_RST0, 0);
86	else
87	gpio_set_value(GPIO_E740_PCMCIA_RST1, 0);
88	}
89
90	switch (state->Vcc) {
91	case 0: /* Socket off */
92	if (skt->nr == 0)
93	gpio_set_value(GPIO_E740_PCMCIA_PWR0, 0);
94	else
95	gpio_set_value(GPIO_E740_PCMCIA_PWR1, 1);
96	break;
97	case 50:
98	case 33: /* socket on */
99	if (skt->nr == 0)
100	gpio_set_value(GPIO_E740_PCMCIA_PWR0, 1);
101	else
102	gpio_set_value(GPIO_E740_PCMCIA_PWR1, 0);
103	break;
104	default:
105	printk(KERN_ERR "e740_cs: Unsupported Vcc: %d\n", state->Vcc);
106	}
107
108	return 0;
109	}
110
111	/*
112	* Enable card status IRQs on (re-)initialisation. This can
113	* be called at initialisation, power management event, or
114	* pcmcia event.
115	*/
116	static void e740_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
117	{
118	soc_pcmcia_enable_irqs(skt, cd_irqs, ARRAY_SIZE(cd_irqs));
119	}
120
121	/*
122	* Disable card status IRQs on suspend.
123	*/
124	static void e740_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
125	{
126	soc_pcmcia_disable_irqs(skt, cd_irqs, ARRAY_SIZE(cd_irqs));
127	}
128
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,
137	.nr = 2,
138	};
139
140	static struct platform_device *e740_pcmcia_device;
141
142	static int __init e740_pcmcia_init(void)
143	{
144	int ret;
145
146	if (!machine_is_e740())
147	return -ENODEV;
148
149	e740_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
150	if (!e740_pcmcia_device)
151	return -ENOMEM;
152
153	ret = platform_device_add_data(e740_pcmcia_device, &e740_pcmcia_ops,
154	sizeof(e740_pcmcia_ops));
155
156	if (!ret)
157	ret = platform_device_add(e740_pcmcia_device);
158
159	if (ret)
160	platform_device_put(e740_pcmcia_device);
161
162	return ret;
163	}
164
165	static void __exit e740_pcmcia_exit(void)
166	{
167	platform_device_unregister(e740_pcmcia_device);
168	}
169
170	module_init(e740_pcmcia_init);
171	module_exit(e740_pcmcia_exit);
172
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");