[deliverable/linux.git] / drivers / pcmcia / sa1100_assabet.c

/*
 * drivers/pcmcia/sa1100_assabet.c
 *
 * PCMCIA implementation routines for Assabet
 *
 */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/device.h>
#include <linux/init.h>

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

#include "sa1100_generic.h"

static struct pcmcia_irqs irqs[] = {
	{ 1, ASSABET_IRQ_GPIO_CF_CD,   "CF CD"   },
	{ 1, ASSABET_IRQ_GPIO_CF_BVD2, "CF BVD2" },
	{ 1, ASSABET_IRQ_GPIO_CF_BVD1, "CF BVD1" },
};

static int assabet_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	skt->socket.pci_irq = ASSABET_IRQ_GPIO_CF_IRQ;

	return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
}

/*
 * Release all resources.
 */
static void assabet_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
{
	soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
}

static void
assabet_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
{
	unsigned long levels = GPLR;

	state->detect = (levels & ASSABET_GPIO_CF_CD) ? 0 : 1;
	state->ready  = (levels & ASSABET_GPIO_CF_IRQ) ? 1 : 0;
	state->bvd1   = (levels & ASSABET_GPIO_CF_BVD1) ? 1 : 0;
	state->bvd2   = (levels & ASSABET_GPIO_CF_BVD2) ? 1 : 0;
	state->wrprot = 0; /* Not available on Assabet. */
	state->vs_3v  = 1; /* Can only apply 3.3V on Assabet. */
	state->vs_Xv  = 0;
}

static int
assabet_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
{
	unsigned int mask;

	switch (state->Vcc) {
	case 0:
		mask = 0;
		break;

	case 50:
		printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n",
			__func__);

	case 33:  /* Can only apply 3.3V to the CF slot. */
		mask = ASSABET_BCR_CF_PWR;
		break;

	default:
		printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __func__,
			state->Vcc);
		return -1;
	}

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

	if (state->flags & SS_RESET)
		mask |= ASSABET_BCR_CF_RST;

	ASSABET_BCR_frob(ASSABET_BCR_CF_RST | ASSABET_BCR_CF_PWR, mask);

	return 0;
}

/*
 * Enable card status IRQs on (re-)initialisation.  This can
 * be called at initialisation, power management event, or
 * pcmcia event.
 */
static void assabet_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
{
	/*
	 * Enable CF bus
	 */
	ASSABET_BCR_clear(ASSABET_BCR_CF_BUS_OFF);

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

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

	/*
	 * Tristate the CF bus signals.  Also assert CF
	 * reset as per user guide page 4-11.
	 */
	ASSABET_BCR_set(ASSABET_BCR_CF_BUS_OFF | ASSABET_BCR_CF_RST);
}

static struct pcmcia_low_level assabet_pcmcia_ops = { 
	.owner			= THIS_MODULE,

	.hw_init		= assabet_pcmcia_hw_init,
	.hw_shutdown		= assabet_pcmcia_hw_shutdown,

	.socket_state		= assabet_pcmcia_socket_state,
	.configure_socket	= assabet_pcmcia_configure_socket,

	.socket_init		= assabet_pcmcia_socket_init,
	.socket_suspend		= assabet_pcmcia_socket_suspend,
};

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

	if (machine_is_assabet() && !machine_has_neponset())
		ret = sa11xx_drv_pcmcia_probe(dev, &assabet_pcmcia_ops, 1, 1);

	return ret;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* drivers/pcmcia/sa1100_assabet.c
	3	*
	4	* PCMCIA implementation routines for Assabet
	5	*
	6	*/
	7	#include <linux/module.h>
	8	#include <linux/kernel.h>
	9	#include <linux/errno.h>
	10	#include <linux/interrupt.h>
	11	#include <linux/device.h>
	12	#include <linux/init.h>
	13
a09e64fb	14	#include <mach/hardware.h>
1da177e4 LT	15	#include <asm/mach-types.h>
	16	#include <asm/irq.h>
	17	#include <asm/signal.h>
a09e64fb	18	#include <mach/assabet.h>
1da177e4 LT	19
	20	#include "sa1100_generic.h"
	21
	22	static struct pcmcia_irqs irqs[] = {
	23	{ 1, ASSABET_IRQ_GPIO_CF_CD, "CF CD" },
	24	{ 1, ASSABET_IRQ_GPIO_CF_BVD2, "CF BVD2" },
	25	{ 1, ASSABET_IRQ_GPIO_CF_BVD1, "CF BVD1" },
	26	};
	27
	28	static int assabet_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
	29	{
66024db5	30	skt->socket.pci_irq = ASSABET_IRQ_GPIO_CF_IRQ;
1da177e4 LT	31
	32	return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
	33	}
	34
	35	/*
	36	* Release all resources.
	37	*/
	38	static void assabet_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
	39	{
	40	soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
	41	}
	42
	43	static void
	44	assabet_pcmcia_socket_state(struct soc_pcmcia_socket skt, struct pcmcia_state state)
	45	{
	46	unsigned long levels = GPLR;
	47
	48	state->detect = (levels & ASSABET_GPIO_CF_CD) ? 0 : 1;
	49	state->ready = (levels & ASSABET_GPIO_CF_IRQ) ? 1 : 0;
	50	state->bvd1 = (levels & ASSABET_GPIO_CF_BVD1) ? 1 : 0;
	51	state->bvd2 = (levels & ASSABET_GPIO_CF_BVD2) ? 1 : 0;
	52	state->wrprot = 0; /* Not available on Assabet. */
	53	state->vs_3v = 1; /* Can only apply 3.3V on Assabet. */
	54	state->vs_Xv = 0;
	55	}
	56
	57	static int
	58	assabet_pcmcia_configure_socket(struct soc_pcmcia_socket skt, const socket_state_t state)
	59	{
	60	unsigned int mask;
	61
	62	switch (state->Vcc) {
	63	case 0:
	64	mask = 0;
	65	break;
	66
	67	case 50:
	68	printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n",
2e11cb4c	69	__func__);
1da177e4 LT	70
	71	case 33: /* Can only apply 3.3V to the CF slot. */
	72	mask = ASSABET_BCR_CF_PWR;
	73	break;
	74
	75	default:
2e11cb4c	76	printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __func__,
1da177e4 LT	77	state->Vcc);
	78	return -1;
	79	}
	80
	81	/* Silently ignore Vpp, output enable, speaker enable. */
	82
	83	if (state->flags & SS_RESET)
	84	mask \|= ASSABET_BCR_CF_RST;
	85
	86	ASSABET_BCR_frob(ASSABET_BCR_CF_RST \| ASSABET_BCR_CF_PWR, mask);
	87
	88	return 0;
	89	}
	90
	91	/*
	92	* Enable card status IRQs on (re-)initialisation. This can
	93	* be called at initialisation, power management event, or
	94	* pcmcia event.
	95	*/
	96	static void assabet_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
	97	{
	98	/*
	99	* Enable CF bus
	100	*/
	101	ASSABET_BCR_clear(ASSABET_BCR_CF_BUS_OFF);
	102
	103	soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
	104	}
	105
	106	/*
	107	* Disable card status IRQs on suspend.
	108	*/
	109	static void assabet_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
	110	{
	111	soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
	112
	113	/*
	114	* Tristate the CF bus signals. Also assert CF
	115	* reset as per user guide page 4-11.
	116	*/
	117	ASSABET_BCR_set(ASSABET_BCR_CF_BUS_OFF \| ASSABET_BCR_CF_RST);
	118	}
	119
	120	static struct pcmcia_low_level assabet_pcmcia_ops = {
	121	.owner = THIS_MODULE,
	122
	123	.hw_init = assabet_pcmcia_hw_init,
	124	.hw_shutdown = assabet_pcmcia_hw_shutdown,
	125
	126	.socket_state = assabet_pcmcia_socket_state,
	127	.configure_socket = assabet_pcmcia_configure_socket,
	128
	129	.socket_init = assabet_pcmcia_socket_init,
	130	.socket_suspend = assabet_pcmcia_socket_suspend,
	131	};
	132
b29cf62c	133	int pcmcia_assabet_init(struct device *dev)
1da177e4 LT	134	{
	135	int ret = -ENODEV;
	136
	137	if (machine_is_assabet() && !machine_has_neponset())
	138	ret = sa11xx_drv_pcmcia_probe(dev, &assabet_pcmcia_ops, 1, 1);
	139
	140	return ret;
	141	}