[mirror_ubuntu-bionic-kernel.git] / drivers / pcmcia / sa1100_h3600.c

/*
 * drivers/pcmcia/sa1100_h3600.c
 *
 * PCMCIA implementation routines for H3600
 *
 */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/gpio.h>

#include <mach/hardware.h>
#include <asm/irq.h>
#include <asm/mach-types.h>
#include <mach/h3600.h>
#include <mach/h3600_gpio.h>

#include "sa1100_generic.h"

static struct pcmcia_irqs irqs[] = {
	{ .sock = 0, .str = "PCMCIA CD0" }, /* .irq will be filled later */
	{ .sock = 1, .str = "PCMCIA CD1" }
};

static int h3600_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	int err;

	switch (skt->nr) {
	case 0:
		err = gpio_request(H3XXX_GPIO_PCMCIA_IRQ0, "PCMCIA IRQ0");
		if (err)
			goto err00;
		err = gpio_direction_input(H3XXX_GPIO_PCMCIA_IRQ0);
		if (err)
			goto err01;
		skt->socket.pci_irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_IRQ0);

		err = gpio_request(H3XXX_GPIO_PCMCIA_CD0, "PCMCIA CD0");
		if (err)
			goto err01;
		err = gpio_direction_input(H3XXX_GPIO_PCMCIA_CD0);
		if (err)
			goto err02;
		irqs[0].irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_CD0);

		err = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
		if (err)
			goto err02;
		break;
	case 1:
		err = gpio_request(H3XXX_GPIO_PCMCIA_IRQ1, "PCMCIA IRQ1");
		if (err)
			goto err10;
		err = gpio_direction_input(H3XXX_GPIO_PCMCIA_IRQ1);
		if (err)
			goto err11;
		skt->socket.pci_irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_IRQ1);

		err = gpio_request(H3XXX_GPIO_PCMCIA_CD1, "PCMCIA CD1");
		if (err)
			goto err11;
		err = gpio_direction_input(H3XXX_GPIO_PCMCIA_CD1);
		if (err)
			goto err12;
		irqs[1].irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_CD1);

		err = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
		if (err)
			goto err12;
		break;
	}
	return 0;

err02:	gpio_free(H3XXX_GPIO_PCMCIA_CD0);
err01:	gpio_free(H3XXX_GPIO_PCMCIA_IRQ0);
err00:	return err;

err12:	gpio_free(H3XXX_GPIO_PCMCIA_CD0);
err11:	gpio_free(H3XXX_GPIO_PCMCIA_IRQ0);
err10:	return err;
}

static void h3600_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
{
	soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
  
	/* Disable CF bus: */
	assign_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON, 0);
	assign_h3600_egpio(IPAQ_EGPIO_OPT_ON, 0);
	assign_h3600_egpio(IPAQ_EGPIO_OPT_RESET, 1);
	switch (skt->nr) {
	case 0:
		gpio_free(H3XXX_GPIO_PCMCIA_CD0);
		gpio_free(H3XXX_GPIO_PCMCIA_IRQ0);
		break;
	case 1:
		gpio_free(H3XXX_GPIO_PCMCIA_CD1);
		gpio_free(H3XXX_GPIO_PCMCIA_IRQ1);
		break;
	}
}

static void
h3600_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
{
	switch (skt->nr) {
	case 0:
		state->detect = !gpio_get_value(H3XXX_GPIO_PCMCIA_CD0);
		state->ready = !!gpio_get_value(H3XXX_GPIO_PCMCIA_IRQ0);
		state->bvd1 = 0;
		state->bvd2 = 0;
		state->wrprot = 0; /* Not available on H3600. */
		state->vs_3v = 0;
		state->vs_Xv = 0;
		break;

	case 1:
		state->detect = !gpio_get_value(H3XXX_GPIO_PCMCIA_CD1);
		state->ready = !!gpio_get_value(H3XXX_GPIO_PCMCIA_IRQ1);
		state->bvd1 = 0;
		state->bvd2 = 0;
		state->wrprot = 0; /* Not available on H3600. */
		state->vs_3v = 0;
		state->vs_Xv = 0;
		break;
	}
}

static int
h3600_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
{
	if (state->Vcc != 0 && state->Vcc != 33 && state->Vcc != 50) {
		printk(KERN_ERR "h3600_pcmcia: unrecognized Vcc %u.%uV\n",
		       state->Vcc / 10, state->Vcc % 10);
		return -1;
	}

	assign_h3600_egpio(IPAQ_EGPIO_CARD_RESET, !!(state->flags & SS_RESET));

	/* Silently ignore Vpp, output enable, speaker enable. */

	return 0;
}

static void h3600_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
{
	/* Enable CF bus: */
	assign_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON, 1);
	assign_h3600_egpio(IPAQ_EGPIO_OPT_ON, 1);
	assign_h3600_egpio(IPAQ_EGPIO_OPT_RESET, 0);

	msleep(10);

	soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
}

static void h3600_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
{
	soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));

	/*
	 * FIXME:  This doesn't fit well.  We don't have the mechanism in
	 * the generic PCMCIA layer to deal with the idea of two sockets
	 * on one bus.  We rely on the cs.c behaviour shutting down
	 * socket 0 then socket 1.
	 */
	if (skt->nr == 1) {
		assign_h3600_egpio(IPAQ_EGPIO_OPT_ON, 0);
		assign_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON, 0);
		/* hmm, does this suck power? */
		assign_h3600_egpio(IPAQ_EGPIO_OPT_RESET, 1);
	}
}

struct pcmcia_low_level h3600_pcmcia_ops = { 
	.owner			= THIS_MODULE,
	.hw_init		= h3600_pcmcia_hw_init,
	.hw_shutdown		= h3600_pcmcia_hw_shutdown,
	.socket_state		= h3600_pcmcia_socket_state,
	.configure_socket	= h3600_pcmcia_configure_socket,

	.socket_init		= h3600_pcmcia_socket_init,
	.socket_suspend		= h3600_pcmcia_socket_suspend,
};

int __init pcmcia_h3600_init(struct device *dev)
{
	int ret = -ENODEV;

	if (machine_is_h3600())
		ret = sa11xx_drv_pcmcia_probe(dev, &h3600_pcmcia_ops, 0, 2);

	return ret;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* drivers/pcmcia/sa1100_h3600.c
	3	*
	4	* PCMCIA implementation routines for H3600
	5	*
	6	*/
	7	#include <linux/module.h>
	8	#include <linux/kernel.h>
1da177e4 LT	9	#include <linux/device.h>
	10	#include <linux/interrupt.h>
	11	#include <linux/init.h>
	12	#include <linux/delay.h>
2a837091	13	#include <linux/gpio.h>
1da177e4	14
a09e64fb	15	#include <mach/hardware.h>
1da177e4 LT	16	#include <asm/irq.h>
1da177e4 LT	17	#include <asm/mach-types.h>
a09e64fb	18	#include <mach/h3600.h>
2a837091	19	#include <mach/h3600_gpio.h>
1da177e4 LT	20
	21	#include "sa1100_generic.h"
	22
	23	static struct pcmcia_irqs irqs[] = {
2a837091 DA	24	{ .sock = 0, .str = "PCMCIA CD0" }, /* .irq will be filled later */
2a837091 DA	25	{ .sock = 1, .str = "PCMCIA CD1" }
1da177e4 LT	26	};
	27
	28	static int h3600_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
	29	{
2a837091	30	int err;
1da177e4	31
2a837091 DA	32	switch (skt->nr) {
	33	case 0:
	34	err = gpio_request(H3XXX_GPIO_PCMCIA_IRQ0, "PCMCIA IRQ0");
	35	if (err)
	36	goto err00;
	37	err = gpio_direction_input(H3XXX_GPIO_PCMCIA_IRQ0);
	38	if (err)
	39	goto err01;
	40	skt->socket.pci_irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_IRQ0);
	41
	42	err = gpio_request(H3XXX_GPIO_PCMCIA_CD0, "PCMCIA CD0");
	43	if (err)
	44	goto err01;
	45	err = gpio_direction_input(H3XXX_GPIO_PCMCIA_CD0);
	46	if (err)
	47	goto err02;
	48	irqs[0].irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_CD0);
	49
	50	err = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
	51	if (err)
	52	goto err02;
	53	break;
	54	case 1:
	55	err = gpio_request(H3XXX_GPIO_PCMCIA_IRQ1, "PCMCIA IRQ1");
	56	if (err)
	57	goto err10;
	58	err = gpio_direction_input(H3XXX_GPIO_PCMCIA_IRQ1);
	59	if (err)
	60	goto err11;
	61	skt->socket.pci_irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_IRQ1);
	62
	63	err = gpio_request(H3XXX_GPIO_PCMCIA_CD1, "PCMCIA CD1");
	64	if (err)
	65	goto err11;
	66	err = gpio_direction_input(H3XXX_GPIO_PCMCIA_CD1);
	67	if (err)
	68	goto err12;
	69	irqs[1].irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_CD1);
	70
	71	err = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
	72	if (err)
	73	goto err12;
	74	break;
	75	}
	76	return 0;
	77
	78	err02: gpio_free(H3XXX_GPIO_PCMCIA_CD0);
	79	err01: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0);
	80	err00: return err;
1da177e4	81
2a837091 DA	82	err12: gpio_free(H3XXX_GPIO_PCMCIA_CD0);
	83	err11: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0);
	84	err10: return err;
1da177e4 LT	85	}
	86
	87	static void h3600_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
	88	{
	89	soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
	90
	91	/* Disable CF bus: */
104a416d DA	92	assign_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON, 0);
	93	assign_h3600_egpio(IPAQ_EGPIO_OPT_ON, 0);
	94	assign_h3600_egpio(IPAQ_EGPIO_OPT_RESET, 1);
2a837091 DA	95	switch (skt->nr) {
	96	case 0:
	97	gpio_free(H3XXX_GPIO_PCMCIA_CD0);
	98	gpio_free(H3XXX_GPIO_PCMCIA_IRQ0);
	99	break;
	100	case 1:
	101	gpio_free(H3XXX_GPIO_PCMCIA_CD1);
	102	gpio_free(H3XXX_GPIO_PCMCIA_IRQ1);
	103	break;
	104	}
1da177e4 LT	105	}
	106
	107	static void
	108	h3600_pcmcia_socket_state(struct soc_pcmcia_socket skt, struct pcmcia_state state)
	109	{
1da177e4 LT	110	switch (skt->nr) {
1da177e4 LT	111	case 0:
2a837091 DA	112	state->detect = !gpio_get_value(H3XXX_GPIO_PCMCIA_CD0);
2a837091 DA	113	state->ready = !!gpio_get_value(H3XXX_GPIO_PCMCIA_IRQ0);
1da177e4 LT	114	state->bvd1 = 0;
	115	state->bvd2 = 0;
	116	state->wrprot = 0; /* Not available on H3600. */
	117	state->vs_3v = 0;
	118	state->vs_Xv = 0;
	119	break;
	120
	121	case 1:
2a837091 DA	122	state->detect = !gpio_get_value(H3XXX_GPIO_PCMCIA_CD1);
2a837091 DA	123	state->ready = !!gpio_get_value(H3XXX_GPIO_PCMCIA_IRQ1);
1da177e4 LT	124	state->bvd1 = 0;
	125	state->bvd2 = 0;
	126	state->wrprot = 0; /* Not available on H3600. */
	127	state->vs_3v = 0;
	128	state->vs_Xv = 0;
	129	break;
	130	}
	131	}
	132
	133	static int
	134	h3600_pcmcia_configure_socket(struct soc_pcmcia_socket skt, const socket_state_t state)
	135	{
	136	if (state->Vcc != 0 && state->Vcc != 33 && state->Vcc != 50) {
	137	printk(KERN_ERR "h3600_pcmcia: unrecognized Vcc %u.%uV\n",
	138	state->Vcc / 10, state->Vcc % 10);
	139	return -1;
	140	}
	141
104a416d	142	assign_h3600_egpio(IPAQ_EGPIO_CARD_RESET, !!(state->flags & SS_RESET));
1da177e4 LT	143
	144	/* Silently ignore Vpp, output enable, speaker enable. */
	145
	146	return 0;
	147	}
	148
	149	static void h3600_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
	150	{
	151	/* Enable CF bus: */
104a416d DA	152	assign_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON, 1);
	153	assign_h3600_egpio(IPAQ_EGPIO_OPT_ON, 1);
	154	assign_h3600_egpio(IPAQ_EGPIO_OPT_RESET, 0);
1da177e4 LT	155
	156	msleep(10);
	157
	158	soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
	159	}
	160
	161	static void h3600_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
	162	{
	163	soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
	164
	165	/*
	166	* FIXME: This doesn't fit well. We don't have the mechanism in
	167	* the generic PCMCIA layer to deal with the idea of two sockets
	168	* on one bus. We rely on the cs.c behaviour shutting down
	169	* socket 0 then socket 1.
	170	*/
	171	if (skt->nr == 1) {
104a416d DA	172	assign_h3600_egpio(IPAQ_EGPIO_OPT_ON, 0);
104a416d DA	173	assign_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON, 0);
1da177e4	174	/* hmm, does this suck power? */
104a416d	175	assign_h3600_egpio(IPAQ_EGPIO_OPT_RESET, 1);
1da177e4 LT	176	}
	177	}
	178
	179	struct pcmcia_low_level h3600_pcmcia_ops = {
	180	.owner = THIS_MODULE,
	181	.hw_init = h3600_pcmcia_hw_init,
	182	.hw_shutdown = h3600_pcmcia_hw_shutdown,
	183	.socket_state = h3600_pcmcia_socket_state,
	184	.configure_socket = h3600_pcmcia_configure_socket,
	185
	186	.socket_init = h3600_pcmcia_socket_init,
	187	.socket_suspend = h3600_pcmcia_socket_suspend,
	188	};
	189
	190	int __init pcmcia_h3600_init(struct device *dev)
	191	{
	192	int ret = -ENODEV;
	193
	194	if (machine_is_h3600())
	195	ret = sa11xx_drv_pcmcia_probe(dev, &h3600_pcmcia_ops, 0, 2);
	196
	197	return ret;
	198	}