[GitHub/mt8127/android_kernel_alcatel_ttab.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 <linux/gpio.h>

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

#include "sa1100_generic.h"

static int assabet_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	skt->stat[SOC_STAT_CD].gpio = ASSABET_GPIO_CF_CD;
	skt->stat[SOC_STAT_CD].name = "CF CD";
	skt->stat[SOC_STAT_BVD1].gpio = ASSABET_GPIO_CF_BVD1;
	skt->stat[SOC_STAT_BVD1].name = "CF BVD1";
	skt->stat[SOC_STAT_BVD2].gpio = ASSABET_GPIO_CF_BVD2;
	skt->stat[SOC_STAT_BVD2].name = "CF BVD2";
	skt->stat[SOC_STAT_RDY].gpio = ASSABET_GPIO_CF_IRQ;
	skt->stat[SOC_STAT_RDY].name = "CF RDY";

	return 0;
}

static void
assabet_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
{
	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, speaker enable. */

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

	ASSABET_BCR_frob(ASSABET_BCR_CF_RST | ASSABET_BCR_CF_PWR |
			ASSABET_BCR_CF_BUS_OFF, mask);

	return 0;
}

/*
 * Disable card status IRQs on suspend.
 */
static void assabet_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
{
	/*
	 * 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,
	.socket_state		= assabet_pcmcia_socket_state,
	.configure_socket	= assabet_pcmcia_configure_socket,
	.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>
03e0092c	13	#include <linux/gpio.h>
1da177e4	14
1da177e4	15	#include <asm/mach-types.h>
a09e64fb	16	#include <mach/assabet.h>
1da177e4 LT	17
	18	#include "sa1100_generic.h"
	19
1da177e4 LT	20	static int assabet_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
1da177e4 LT	21	{
03e0092c RK	22	skt->stat[SOC_STAT_CD].gpio = ASSABET_GPIO_CF_CD;
	23	skt->stat[SOC_STAT_CD].name = "CF CD";
	24	skt->stat[SOC_STAT_BVD1].gpio = ASSABET_GPIO_CF_BVD1;
	25	skt->stat[SOC_STAT_BVD1].name = "CF BVD1";
	26	skt->stat[SOC_STAT_BVD2].gpio = ASSABET_GPIO_CF_BVD2;
	27	skt->stat[SOC_STAT_BVD2].name = "CF BVD2";
	28	skt->stat[SOC_STAT_RDY].gpio = ASSABET_GPIO_CF_IRQ;
	29	skt->stat[SOC_STAT_RDY].name = "CF RDY";
1da177e4	30
03e0092c	31	return 0;
1da177e4 LT	32	}
	33
	34	static void
	35	assabet_pcmcia_socket_state(struct soc_pcmcia_socket skt, struct pcmcia_state state)
	36	{
1da177e4 LT	37	state->vs_3v = 1; /* Can only apply 3.3V on Assabet. */
	38	state->vs_Xv = 0;
	39	}
	40
	41	static int
	42	assabet_pcmcia_configure_socket(struct soc_pcmcia_socket skt, const socket_state_t state)
	43	{
	44	unsigned int mask;
	45
	46	switch (state->Vcc) {
	47	case 0:
	48	mask = 0;
	49	break;
	50
	51	case 50:
	52	printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n",
2e11cb4c	53	__func__);
1da177e4 LT	54
	55	case 33: /* Can only apply 3.3V to the CF slot. */
	56	mask = ASSABET_BCR_CF_PWR;
	57	break;
	58
	59	default:
2e11cb4c	60	printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __func__,
1da177e4 LT	61	state->Vcc);
	62	return -1;
	63	}
	64
03e0092c	65	/* Silently ignore Vpp, speaker enable. */
1da177e4 LT	66
	67	if (state->flags & SS_RESET)
	68	mask \|= ASSABET_BCR_CF_RST;
03e0092c RK	69	if (!(state->flags & SS_OUTPUT_ENA))
03e0092c RK	70	mask \|= ASSABET_BCR_CF_BUS_OFF;
1da177e4	71
03e0092c RK	72	ASSABET_BCR_frob(ASSABET_BCR_CF_RST \| ASSABET_BCR_CF_PWR \|
03e0092c RK	73	ASSABET_BCR_CF_BUS_OFF, mask);
1da177e4 LT	74
	75	return 0;
	76	}
	77
1da177e4 LT	78	/*
	79	* Disable card status IRQs on suspend.
	80	*/
	81	static void assabet_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
	82	{
1da177e4 LT	83	/*
	84	* Tristate the CF bus signals. Also assert CF
	85	* reset as per user guide page 4-11.
	86	*/
	87	ASSABET_BCR_set(ASSABET_BCR_CF_BUS_OFF \| ASSABET_BCR_CF_RST);
	88	}
	89
	90	static struct pcmcia_low_level assabet_pcmcia_ops = {
	91	.owner = THIS_MODULE,
1da177e4	92	.hw_init = assabet_pcmcia_hw_init,
1da177e4 LT	93	.socket_state = assabet_pcmcia_socket_state,
1da177e4 LT	94	.configure_socket = assabet_pcmcia_configure_socket,
1da177e4 LT	95	.socket_suspend = assabet_pcmcia_socket_suspend,
	96	};
	97
34cdf25a	98	int pcmcia_assabet_init(struct device *dev)
1da177e4 LT	99	{
	100	int ret = -ENODEV;
	101
	102	if (machine_is_assabet() && !machine_has_neponset())
	103	ret = sa11xx_drv_pcmcia_probe(dev, &assabet_pcmcia_ops, 1, 1);
	104
	105	return ret;
	106	}