[deliverable/linux.git] / drivers / pcmcia / sa1100_simpad.c

/*
 * drivers/pcmcia/sa1100_simpad.c
 *
 * PCMCIA implementation routines for simpad
 *
 */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/init.h>

#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/irq.h>
#include <mach/simpad.h>
#include "sa1100_generic.h"
 
extern long get_cs3_shadow(void);
extern void set_cs3_bit(int value); 
extern void clear_cs3_bit(int value);

static struct pcmcia_irqs irqs[] = {
	{ 1, IRQ_GPIO_CF_CD, "CF_CD" },
};

static int simpad_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{

	clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);

	skt->socket.pci_irq = IRQ_GPIO_CF_IRQ;

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

static void simpad_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
{
	soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));

	/* Disable CF bus: */
	//set_cs3_bit(PCMCIA_BUFF_DIS);
	clear_cs3_bit(PCMCIA_RESET);       
}

static void
simpad_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
			   struct pcmcia_state *state)
{
	unsigned long levels = GPLR;
	long cs3reg = get_cs3_shadow();

	state->detect=((levels & GPIO_CF_CD)==0)?1:0;
	state->ready=(levels & GPIO_CF_IRQ)?1:0;
	state->bvd1=1; /* Not available on Simpad. */
	state->bvd2=1; /* Not available on Simpad. */
	state->wrprot=0; /* Not available on Simpad. */
  
	if((cs3reg & 0x0c) == 0x0c) {
		state->vs_3v=0;
		state->vs_Xv=0;
	} else {
		state->vs_3v=1;
		state->vs_Xv=0;
	}
}

static int
simpad_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
			       const socket_state_t *state)
{
	unsigned long flags;

	local_irq_save(flags);

	/* Murphy: see table of MIC2562a-1 */
	switch (state->Vcc) {
	case 0:
		clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);
		break;

	case 33:  
		clear_cs3_bit(VCC_3V_EN|EN1);
		set_cs3_bit(VCC_5V_EN|EN0);
		break;

	case 50:
		clear_cs3_bit(VCC_5V_EN|EN1);
		set_cs3_bit(VCC_3V_EN|EN0);
		break;

	default:
		printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
			__func__, state->Vcc);
		clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);
		local_irq_restore(flags);
		return -1;
	}


	local_irq_restore(flags);

	return 0;
}

static void simpad_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
{
	soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
}

static void simpad_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
{
	soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
	set_cs3_bit(PCMCIA_RESET);
}

static struct pcmcia_low_level simpad_pcmcia_ops = { 
	.owner			= THIS_MODULE,
	.hw_init		= simpad_pcmcia_hw_init,
	.hw_shutdown		= simpad_pcmcia_hw_shutdown,
	.socket_state		= simpad_pcmcia_socket_state,
	.configure_socket	= simpad_pcmcia_configure_socket,
	.socket_init		= simpad_pcmcia_socket_init,
	.socket_suspend		= simpad_pcmcia_socket_suspend,
};

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

	if (machine_is_simpad())
		ret = sa11xx_drv_pcmcia_probe(dev, &simpad_pcmcia_ops, 1, 1);

	return ret;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* drivers/pcmcia/sa1100_simpad.c
	3	*
	4	* PCMCIA implementation routines for simpad
	5	*
	6	*/
	7	#include <linux/module.h>
	8	#include <linux/kernel.h>
1da177e4 LT	9	#include <linux/device.h>
	10	#include <linux/init.h>
	11
a09e64fb	12	#include <mach/hardware.h>
1da177e4 LT	13	#include <asm/mach-types.h>
1da177e4 LT	14	#include <asm/irq.h>
a09e64fb	15	#include <mach/simpad.h>
1da177e4 LT	16	#include "sa1100_generic.h"
	17
	18	extern long get_cs3_shadow(void);
	19	extern void set_cs3_bit(int value);
	20	extern void clear_cs3_bit(int value);
	21
	22	static struct pcmcia_irqs irqs[] = {
	23	{ 1, IRQ_GPIO_CF_CD, "CF_CD" },
	24	};
	25
	26	static int simpad_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
	27	{
	28
	29	clear_cs3_bit(VCC_3V_EN\|VCC_5V_EN\|EN0\|EN1);
	30
66024db5	31	skt->socket.pci_irq = IRQ_GPIO_CF_IRQ;
1da177e4 LT	32
	33	return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
	34	}
	35
	36	static void simpad_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
	37	{
	38	soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
	39
	40	/* Disable CF bus: */
	41	//set_cs3_bit(PCMCIA_BUFF_DIS);
	42	clear_cs3_bit(PCMCIA_RESET);
	43	}
	44
	45	static void
	46	simpad_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
	47	struct pcmcia_state *state)
	48	{
	49	unsigned long levels = GPLR;
	50	long cs3reg = get_cs3_shadow();
	51
	52	state->detect=((levels & GPIO_CF_CD)==0)?1:0;
	53	state->ready=(levels & GPIO_CF_IRQ)?1:0;
	54	state->bvd1=1; /* Not available on Simpad. */
	55	state->bvd2=1; /* Not available on Simpad. */
	56	state->wrprot=0; /* Not available on Simpad. */
	57
	58	if((cs3reg & 0x0c) == 0x0c) {
	59	state->vs_3v=0;
	60	state->vs_Xv=0;
	61	} else {
	62	state->vs_3v=1;
	63	state->vs_Xv=0;
	64	}
	65	}
	66
	67	static int
	68	simpad_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
	69	const socket_state_t *state)
	70	{
	71	unsigned long flags;
	72
	73	local_irq_save(flags);
	74
	75	/* Murphy: see table of MIC2562a-1 */
	76	switch (state->Vcc) {
	77	case 0:
	78	clear_cs3_bit(VCC_3V_EN\|VCC_5V_EN\|EN0\|EN1);
	79	break;
	80
	81	case 33:
	82	clear_cs3_bit(VCC_3V_EN\|EN1);
	83	set_cs3_bit(VCC_5V_EN\|EN0);
	84	break;
	85
	86	case 50:
	87	clear_cs3_bit(VCC_5V_EN\|EN1);
	88	set_cs3_bit(VCC_3V_EN\|EN0);
	89	break;
	90
	91	default:
	92	printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
2e11cb4c	93	__func__, state->Vcc);
1da177e4 LT	94	clear_cs3_bit(VCC_3V_EN\|VCC_5V_EN\|EN0\|EN1);
	95	local_irq_restore(flags);
	96	return -1;
	97	}
	98
	99
	100	local_irq_restore(flags);
	101
	102	return 0;
	103	}
	104
	105	static void simpad_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
	106	{
	107	soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
	108	}
	109
	110	static void simpad_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
	111	{
	112	soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
	113	set_cs3_bit(PCMCIA_RESET);
	114	}
	115
	116	static struct pcmcia_low_level simpad_pcmcia_ops = {
	117	.owner = THIS_MODULE,
	118	.hw_init = simpad_pcmcia_hw_init,
	119	.hw_shutdown = simpad_pcmcia_hw_shutdown,
	120	.socket_state = simpad_pcmcia_socket_state,
	121	.configure_socket = simpad_pcmcia_configure_socket,
	122	.socket_init = simpad_pcmcia_socket_init,
	123	.socket_suspend = simpad_pcmcia_socket_suspend,
	124	};
	125
	126	int __init pcmcia_simpad_init(struct device *dev)
	127	{
	128	int ret = -ENODEV;
	129
	130	if (machine_is_simpad())
	131	ret = sa11xx_drv_pcmcia_probe(dev, &simpad_pcmcia_ops, 1, 1);
	132
	133	return ret;
	134	}