[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / pcmcia / sa1100_cerf.c

/*
 * drivers/pcmcia/sa1100_cerf.c
 *
 * PCMCIA implementation routines for CerfBoard
 * Based off the Assabet.
 *
 */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/gpio.h>

#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/irq.h>
#include <mach/cerf.h>
#include "sa1100_generic.h"

#define CERF_SOCKET	1

static int cerf_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	int ret;

	ret = gpio_request_one(CERF_GPIO_CF_RESET, GPIOF_OUT_INIT_LOW, "CF_RESET");
	if (ret)
		return ret;

	skt->stat[SOC_STAT_CD].gpio = CERF_GPIO_CF_CD;
	skt->stat[SOC_STAT_CD].name = "CF_CD";
	skt->stat[SOC_STAT_BVD1].gpio = CERF_GPIO_CF_BVD1;
	skt->stat[SOC_STAT_BVD1].name = "CF_BVD1";
	skt->stat[SOC_STAT_BVD2].gpio = CERF_GPIO_CF_BVD2;
	skt->stat[SOC_STAT_BVD2].name = "CF_BVD2";
	skt->stat[SOC_STAT_RDY].gpio = CERF_GPIO_CF_IRQ;
	skt->stat[SOC_STAT_RDY].name = "CF_IRQ";

	return 0;
}

static void cerf_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
{
	gpio_free(CERF_GPIO_CF_RESET);
}

static void
cerf_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
{
	state->vs_3v	= 1;
	state->vs_Xv	= 0;
}

static int
cerf_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
			     const socket_state_t *state)
{
	switch (state->Vcc) {
	case 0:
	case 50:
	case 33:
		break;

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

	gpio_set_value(CERF_GPIO_CF_RESET, !!(state->flags & SS_RESET));

	return 0;
}

static struct pcmcia_low_level cerf_pcmcia_ops = { 
	.owner			= THIS_MODULE,
	.hw_init		= cerf_pcmcia_hw_init,
	.hw_shutdown		= cerf_pcmcia_hw_shutdown,
	.socket_state		= cerf_pcmcia_socket_state,
	.configure_socket	= cerf_pcmcia_configure_socket,
};

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

	if (machine_is_cerf())
		ret = sa11xx_drv_pcmcia_probe(dev, &cerf_pcmcia_ops, CERF_SOCKET, 1);

	return ret;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* drivers/pcmcia/sa1100_cerf.c
	3	*
	4	* PCMCIA implementation routines for CerfBoard
	5	* Based off the Assabet.
	6	*
	7	*/
1da177e4 LT	8	#include <linux/module.h>
1da177e4 LT	9	#include <linux/kernel.h>
1da177e4 LT	10	#include <linux/device.h>
	11	#include <linux/init.h>
	12	#include <linux/delay.h>
bbb58a12	13	#include <linux/gpio.h>
1da177e4	14
a09e64fb	15	#include <mach/hardware.h>
1da177e4 LT	16	#include <asm/mach-types.h>
1da177e4 LT	17	#include <asm/irq.h>
a09e64fb	18	#include <mach/cerf.h>
1da177e4 LT	19	#include "sa1100_generic.h"
	20
	21	#define CERF_SOCKET 1
	22
1da177e4 LT	23	static int cerf_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
1da177e4 LT	24	{
bbb58a12 RK	25	int ret;
	26
	27	ret = gpio_request_one(CERF_GPIO_CF_RESET, GPIOF_OUT_INIT_LOW, "CF_RESET");
	28	if (ret)
	29	return ret;
	30
f793e3ab RK	31	skt->stat[SOC_STAT_CD].gpio = CERF_GPIO_CF_CD;
	32	skt->stat[SOC_STAT_CD].name = "CF_CD";
	33	skt->stat[SOC_STAT_BVD1].gpio = CERF_GPIO_CF_BVD1;
	34	skt->stat[SOC_STAT_BVD1].name = "CF_BVD1";
	35	skt->stat[SOC_STAT_BVD2].gpio = CERF_GPIO_CF_BVD2;
	36	skt->stat[SOC_STAT_BVD2].name = "CF_BVD2";
	37	skt->stat[SOC_STAT_RDY].gpio = CERF_GPIO_CF_IRQ;
	38	skt->stat[SOC_STAT_RDY].name = "CF_IRQ";
1da177e4	39
f793e3ab	40	return 0;
1da177e4 LT	41	}
1da177e4 LT	42
bbb58a12 RK	43	static void cerf_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
	44	{
	45	gpio_free(CERF_GPIO_CF_RESET);
	46	}
	47
1da177e4 LT	48	static void
	49	cerf_pcmcia_socket_state(struct soc_pcmcia_socket skt, struct pcmcia_state state)
	50	{
1da177e4 LT	51	state->vs_3v = 1;
	52	state->vs_Xv = 0;
	53	}
	54
	55	static int
	56	cerf_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
	57	const socket_state_t *state)
	58	{
	59	switch (state->Vcc) {
	60	case 0:
	61	case 50:
	62	case 33:
	63	break;
	64
	65	default:
	66	printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
2e11cb4c	67	__func__, state->Vcc);
1da177e4 LT	68	return -1;
	69	}
	70
bbb58a12	71	gpio_set_value(CERF_GPIO_CF_RESET, !!(state->flags & SS_RESET));
1da177e4 LT	72
	73	return 0;
	74	}
	75
1da177e4 LT	76	static struct pcmcia_low_level cerf_pcmcia_ops = {
	77	.owner = THIS_MODULE,
	78	.hw_init = cerf_pcmcia_hw_init,
bbb58a12	79	.hw_shutdown = cerf_pcmcia_hw_shutdown,
1da177e4 LT	80	.socket_state = cerf_pcmcia_socket_state,
1da177e4 LT	81	.configure_socket = cerf_pcmcia_configure_socket,
1da177e4 LT	82	};
1da177e4 LT	83
34cdf25a	84	int pcmcia_cerf_init(struct device *dev)
1da177e4 LT	85	{
	86	int ret = -ENODEV;
	87
	88	if (machine_is_cerf())
	89	ret = sa11xx_drv_pcmcia_probe(dev, &cerf_pcmcia_ops, CERF_SOCKET, 1);
	90
	91	return ret;
	92	}