[GitHub/mt8127/android_kernel_alcatel_ttab.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"
 
static struct pcmcia_irqs irqs[] = {
	{ 1, IRQ_GPIO_CF_CD, "CF_CD" },
};

static int simpad_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{

	simpad_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: */
	/*simpad_set_cs3_bit(PCMCIA_BUFF_DIS);*/
	simpad_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 = simpad_get_cs3_ro();

	state->detect=((levels & GPIO_CF_CD)==0)?1:0;
	state->ready=(levels & GPIO_CF_IRQ)?1:0;
	state->bvd1 = 1; /* Might be cs3reg & PCMCIA_BVD1 */
	state->bvd2 = 1; /* Might be cs3reg & PCMCIA_BVD2 */
	state->wrprot=0; /* Not available on Simpad. */

	if ((cs3reg & (PCMCIA_VS1|PCMCIA_VS2)) ==
			(PCMCIA_VS1|PCMCIA_VS2)) {
		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:
		simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);
		break;

	case 33:  
		simpad_clear_cs3_bit(VCC_3V_EN|EN1);
		simpad_set_cs3_bit(VCC_5V_EN|EN0);
		break;

	case 50:
		simpad_clear_cs3_bit(VCC_5V_EN|EN1);
		simpad_set_cs3_bit(VCC_3V_EN|EN0);
		break;

	default:
		printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
			__func__, state->Vcc);
		simpad_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));
	simpad_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 __devinit 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"
1da177e4 LT	17
1da177e4 LT	18	static struct pcmcia_irqs irqs[] = {
	19	{ 1, IRQ_GPIO_CF_CD, "CF_CD" },
	20	};
	21
	22	static int simpad_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
	23	{
	24
de0bc0d1	25	simpad_clear_cs3_bit(VCC_3V_EN\|VCC_5V_EN\|EN0\|EN1);
1da177e4	26
66024db5	27	skt->socket.pci_irq = IRQ_GPIO_CF_IRQ;
1da177e4 LT	28
	29	return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
	30	}
	31
	32	static void simpad_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
	33	{
	34	soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
	35
	36	/* Disable CF bus: */
de0bc0d1 JF	37	/simpad_set_cs3_bit(PCMCIA_BUFF_DIS);/
de0bc0d1 JF	38	simpad_clear_cs3_bit(PCMCIA_RESET);
1da177e4 LT	39	}
	40
	41	static void
	42	simpad_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
	43	struct pcmcia_state *state)
	44	{
	45	unsigned long levels = GPLR;
de0bc0d1	46	long cs3reg = simpad_get_cs3_ro();
1da177e4 LT	47
	48	state->detect=((levels & GPIO_CF_CD)==0)?1:0;
	49	state->ready=(levels & GPIO_CF_IRQ)?1:0;
de0bc0d1 JF	50	state->bvd1 = 1; /* Might be cs3reg & PCMCIA_BVD1 */
de0bc0d1 JF	51	state->bvd2 = 1; /* Might be cs3reg & PCMCIA_BVD2 */
1da177e4	52	state->wrprot=0; /* Not available on Simpad. */
de0bc0d1 JF	53
	54	if ((cs3reg & (PCMCIA_VS1\|PCMCIA_VS2)) ==
	55	(PCMCIA_VS1\|PCMCIA_VS2)) {
1da177e4 LT	56	state->vs_3v=0;
	57	state->vs_Xv=0;
	58	} else {
	59	state->vs_3v=1;
	60	state->vs_Xv=0;
	61	}
	62	}
	63
	64	static int
	65	simpad_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
	66	const socket_state_t *state)
	67	{
	68	unsigned long flags;
	69
	70	local_irq_save(flags);
	71
	72	/* Murphy: see table of MIC2562a-1 */
	73	switch (state->Vcc) {
	74	case 0:
de0bc0d1	75	simpad_clear_cs3_bit(VCC_3V_EN\|VCC_5V_EN\|EN0\|EN1);
1da177e4 LT	76	break;
	77
	78	case 33:
de0bc0d1 JF	79	simpad_clear_cs3_bit(VCC_3V_EN\|EN1);
de0bc0d1 JF	80	simpad_set_cs3_bit(VCC_5V_EN\|EN0);
1da177e4 LT	81	break;
	82
	83	case 50:
de0bc0d1 JF	84	simpad_clear_cs3_bit(VCC_5V_EN\|EN1);
de0bc0d1 JF	85	simpad_set_cs3_bit(VCC_3V_EN\|EN0);
1da177e4 LT	86	break;
	87
	88	default:
	89	printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
2e11cb4c	90	__func__, state->Vcc);
de0bc0d1	91	simpad_clear_cs3_bit(VCC_3V_EN\|VCC_5V_EN\|EN0\|EN1);
1da177e4 LT	92	local_irq_restore(flags);
	93	return -1;
	94	}
	95
	96
	97	local_irq_restore(flags);
	98
	99	return 0;
	100	}
	101
	102	static void simpad_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
	103	{
	104	soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
	105	}
	106
	107	static void simpad_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
	108	{
	109	soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
de0bc0d1	110	simpad_set_cs3_bit(PCMCIA_RESET);
1da177e4 LT	111	}
	112
	113	static struct pcmcia_low_level simpad_pcmcia_ops = {
	114	.owner = THIS_MODULE,
	115	.hw_init = simpad_pcmcia_hw_init,
	116	.hw_shutdown = simpad_pcmcia_hw_shutdown,
	117	.socket_state = simpad_pcmcia_socket_state,
	118	.configure_socket = simpad_pcmcia_configure_socket,
	119	.socket_init = simpad_pcmcia_socket_init,
	120	.socket_suspend = simpad_pcmcia_socket_suspend,
	121	};
	122
5b85e04e	123	int __devinit pcmcia_simpad_init(struct device *dev)
1da177e4 LT	124	{
	125	int ret = -ENODEV;
	126
	127	if (machine_is_simpad())
	128	ret = sa11xx_drv_pcmcia_probe(dev, &simpad_pcmcia_ops, 1, 1);
	129
	130	return ret;
	131	}