[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / pcmcia / sa1100_h3600.c

/*
 * drivers/pcmcia/sa1100_h3600.c
 *
 * PCMCIA implementation routines for H3600
 *
 */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/gpio.h>

#include <mach/hardware.h>
#include <asm/irq.h>
#include <asm/mach-types.h>
#include <mach/h3xxx.h>

#include "sa1100_generic.h"

static int h3600_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	int err;

	switch (skt->nr) {
	case 0:
		skt->stat[SOC_STAT_CD].gpio = H3XXX_GPIO_PCMCIA_CD0;
		skt->stat[SOC_STAT_CD].name = "PCMCIA CD0";
		skt->stat[SOC_STAT_RDY].gpio = H3XXX_GPIO_PCMCIA_IRQ0;
		skt->stat[SOC_STAT_RDY].name = "PCMCIA IRQ0";

		err = gpio_request(H3XXX_EGPIO_OPT_NVRAM_ON, "OPT NVRAM ON");
		if (err)
			goto err01;
		err = gpio_direction_output(H3XXX_EGPIO_OPT_NVRAM_ON, 0);
		if (err)
			goto err03;
		err = gpio_request(H3XXX_EGPIO_OPT_ON, "OPT ON");
		if (err)
			goto err03;
		err = gpio_direction_output(H3XXX_EGPIO_OPT_ON, 0);
		if (err)
			goto err04;
		err = gpio_request(H3XXX_EGPIO_OPT_RESET, "OPT RESET");
		if (err)
			goto err04;
		err = gpio_direction_output(H3XXX_EGPIO_OPT_RESET, 0);
		if (err)
			goto err05;
		err = gpio_request(H3XXX_EGPIO_CARD_RESET, "PCMCIA CARD RESET");
		if (err)
			goto err05;
		err = gpio_direction_output(H3XXX_EGPIO_CARD_RESET, 0);
		if (err)
			goto err06;
		break;
	case 1:
		skt->stat[SOC_STAT_CD].gpio = H3XXX_GPIO_PCMCIA_CD1;
		skt->stat[SOC_STAT_CD].name = "PCMCIA CD1";
		skt->stat[SOC_STAT_RDY].gpio = H3XXX_GPIO_PCMCIA_IRQ1;
		skt->stat[SOC_STAT_RDY].name = "PCMCIA IRQ1";
		break;
	}
	return 0;

err06:	gpio_free(H3XXX_EGPIO_CARD_RESET);
err05:	gpio_free(H3XXX_EGPIO_OPT_RESET);
err04:	gpio_free(H3XXX_EGPIO_OPT_ON);
err03:	gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON);
err01:	gpio_free(H3XXX_GPIO_PCMCIA_IRQ0);
	return err;
}

static void h3600_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
{
	switch (skt->nr) {
	case 0:
		/* Disable CF bus: */
		gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0);
		gpio_set_value(H3XXX_EGPIO_OPT_ON, 0);
		gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1);

		gpio_free(H3XXX_EGPIO_CARD_RESET);
		gpio_free(H3XXX_EGPIO_OPT_RESET);
		gpio_free(H3XXX_EGPIO_OPT_ON);
		gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON);
		break;
	case 1:
		break;
	}
}

static void
h3600_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
{
	state->bvd1 = 0;
	state->bvd2 = 0;
	state->vs_3v = 0;
	state->vs_Xv = 0;
}

static int
h3600_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
{
	if (state->Vcc != 0 && state->Vcc != 33 && state->Vcc != 50) {
		printk(KERN_ERR "h3600_pcmcia: unrecognized Vcc %u.%uV\n",
		       state->Vcc / 10, state->Vcc % 10);
		return -1;
	}

	gpio_set_value(H3XXX_EGPIO_CARD_RESET, !!(state->flags & SS_RESET));

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

	return 0;
}

static void h3600_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
{
	/* Enable CF bus: */
	gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 1);
	gpio_set_value(H3XXX_EGPIO_OPT_ON, 1);
	gpio_set_value(H3XXX_EGPIO_OPT_RESET, 0);

	msleep(10);
}

static void h3600_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
{
	/*
	 * FIXME:  This doesn't fit well.  We don't have the mechanism in
	 * the generic PCMCIA layer to deal with the idea of two sockets
	 * on one bus.  We rely on the cs.c behaviour shutting down
	 * socket 0 then socket 1.
	 */
	if (skt->nr == 1) {
		gpio_set_value(H3XXX_EGPIO_OPT_ON, 0);
		gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0);
		/* hmm, does this suck power? */
		gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1);
	}
}

struct pcmcia_low_level h3600_pcmcia_ops = { 
	.owner			= THIS_MODULE,
	.hw_init		= h3600_pcmcia_hw_init,
	.hw_shutdown		= h3600_pcmcia_hw_shutdown,
	.socket_state		= h3600_pcmcia_socket_state,
	.configure_socket	= h3600_pcmcia_configure_socket,

	.socket_init		= h3600_pcmcia_socket_init,
	.socket_suspend		= h3600_pcmcia_socket_suspend,
};

int pcmcia_h3600_init(struct device *dev)
{
	int ret = -ENODEV;

	if (machine_is_h3600() || machine_is_h3100())
		ret = sa11xx_drv_pcmcia_probe(dev, &h3600_pcmcia_ops, 0, 2);

	return ret;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* drivers/pcmcia/sa1100_h3600.c
	3	*
	4	* PCMCIA implementation routines for H3600
	5	*
	6	*/
	7	#include <linux/module.h>
	8	#include <linux/kernel.h>
1da177e4 LT	9	#include <linux/device.h>
	10	#include <linux/interrupt.h>
	11	#include <linux/init.h>
	12	#include <linux/delay.h>
2a837091	13	#include <linux/gpio.h>
1da177e4	14
a09e64fb	15	#include <mach/hardware.h>
1da177e4 LT	16	#include <asm/irq.h>
1da177e4 LT	17	#include <asm/mach-types.h>
8715b29d	18	#include <mach/h3xxx.h>
1da177e4 LT	19
	20	#include "sa1100_generic.h"
	21
1da177e4 LT	22	static int h3600_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
1da177e4 LT	23	{
2a837091	24	int err;
1da177e4	25
2a837091 DA	26	switch (skt->nr) {
2a837091 DA	27	case 0:
65474b45 RK	28	skt->stat[SOC_STAT_CD].gpio = H3XXX_GPIO_PCMCIA_CD0;
	29	skt->stat[SOC_STAT_CD].name = "PCMCIA CD0";
	30	skt->stat[SOC_STAT_RDY].gpio = H3XXX_GPIO_PCMCIA_IRQ0;
	31	skt->stat[SOC_STAT_RDY].name = "PCMCIA IRQ0";
2a837091	32
22f97405	33	err = gpio_request(H3XXX_EGPIO_OPT_NVRAM_ON, "OPT NVRAM ON");
2a837091	34	if (err)
65474b45	35	goto err01;
22f97405 DA	36	err = gpio_direction_output(H3XXX_EGPIO_OPT_NVRAM_ON, 0);
	37	if (err)
	38	goto err03;
	39	err = gpio_request(H3XXX_EGPIO_OPT_ON, "OPT ON");
	40	if (err)
	41	goto err03;
	42	err = gpio_direction_output(H3XXX_EGPIO_OPT_ON, 0);
	43	if (err)
	44	goto err04;
	45	err = gpio_request(H3XXX_EGPIO_OPT_RESET, "OPT RESET");
	46	if (err)
	47	goto err04;
	48	err = gpio_direction_output(H3XXX_EGPIO_OPT_RESET, 0);
	49	if (err)
	50	goto err05;
	51	err = gpio_request(H3XXX_EGPIO_CARD_RESET, "PCMCIA CARD RESET");
	52	if (err)
	53	goto err05;
	54	err = gpio_direction_output(H3XXX_EGPIO_CARD_RESET, 0);
22f97405 DA	55	if (err)
22f97405 DA	56	goto err06;
2a837091 DA	57	break;
2a837091 DA	58	case 1:
65474b45 RK	59	skt->stat[SOC_STAT_CD].gpio = H3XXX_GPIO_PCMCIA_CD1;
	60	skt->stat[SOC_STAT_CD].name = "PCMCIA CD1";
	61	skt->stat[SOC_STAT_RDY].gpio = H3XXX_GPIO_PCMCIA_IRQ1;
	62	skt->stat[SOC_STAT_RDY].name = "PCMCIA IRQ1";
2a837091 DA	63	break;
	64	}
	65	return 0;
	66
22f97405 DA	67	err06: gpio_free(H3XXX_EGPIO_CARD_RESET);
	68	err05: gpio_free(H3XXX_EGPIO_OPT_RESET);
	69	err04: gpio_free(H3XXX_EGPIO_OPT_ON);
	70	err03: gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON);
2a837091	71	err01: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0);
65474b45	72	return err;
1da177e4 LT	73	}
	74
	75	static void h3600_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
	76	{
2a837091 DA	77	switch (skt->nr) {
2a837091 DA	78	case 0:
22f97405 DA	79	/* Disable CF bus: */
	80	gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0);
	81	gpio_set_value(H3XXX_EGPIO_OPT_ON, 0);
	82	gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1);
	83
	84	gpio_free(H3XXX_EGPIO_CARD_RESET);
	85	gpio_free(H3XXX_EGPIO_OPT_RESET);
	86	gpio_free(H3XXX_EGPIO_OPT_ON);
	87	gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON);
2a837091 DA	88	break;
2a837091 DA	89	case 1:
2a837091 DA	90	break;
2a837091 DA	91	}
1da177e4 LT	92	}
	93
	94	static void
	95	h3600_pcmcia_socket_state(struct soc_pcmcia_socket skt, struct pcmcia_state state)
	96	{
65474b45 RK	97	state->bvd1 = 0;
65474b45 RK	98	state->bvd2 = 0;
65474b45 RK	99	state->vs_3v = 0;
65474b45 RK	100	state->vs_Xv = 0;
1da177e4 LT	101	}
	102
	103	static int
	104	h3600_pcmcia_configure_socket(struct soc_pcmcia_socket skt, const socket_state_t state)
	105	{
	106	if (state->Vcc != 0 && state->Vcc != 33 && state->Vcc != 50) {
	107	printk(KERN_ERR "h3600_pcmcia: unrecognized Vcc %u.%uV\n",
	108	state->Vcc / 10, state->Vcc % 10);
	109	return -1;
	110	}
	111
22f97405	112	gpio_set_value(H3XXX_EGPIO_CARD_RESET, !!(state->flags & SS_RESET));
1da177e4 LT	113
	114	/* Silently ignore Vpp, output enable, speaker enable. */
	115
	116	return 0;
	117	}
	118
	119	static void h3600_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
	120	{
	121	/* Enable CF bus: */
22f97405 DA	122	gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 1);
	123	gpio_set_value(H3XXX_EGPIO_OPT_ON, 1);
	124	gpio_set_value(H3XXX_EGPIO_OPT_RESET, 0);
1da177e4 LT	125
1da177e4 LT	126	msleep(10);
1da177e4 LT	127	}
	128
	129	static void h3600_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
	130	{
1da177e4 LT	131	/*
	132	* FIXME: This doesn't fit well. We don't have the mechanism in
	133	* the generic PCMCIA layer to deal with the idea of two sockets
	134	* on one bus. We rely on the cs.c behaviour shutting down
	135	* socket 0 then socket 1.
	136	*/
	137	if (skt->nr == 1) {
22f97405 DA	138	gpio_set_value(H3XXX_EGPIO_OPT_ON, 0);
22f97405 DA	139	gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0);
1da177e4	140	/* hmm, does this suck power? */
22f97405	141	gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1);
1da177e4 LT	142	}
	143	}
	144
	145	struct pcmcia_low_level h3600_pcmcia_ops = {
	146	.owner = THIS_MODULE,
	147	.hw_init = h3600_pcmcia_hw_init,
	148	.hw_shutdown = h3600_pcmcia_hw_shutdown,
	149	.socket_state = h3600_pcmcia_socket_state,
	150	.configure_socket = h3600_pcmcia_configure_socket,
	151
	152	.socket_init = h3600_pcmcia_socket_init,
	153	.socket_suspend = h3600_pcmcia_socket_suspend,
	154	};
	155
34cdf25a	156	int pcmcia_h3600_init(struct device *dev)
1da177e4 LT	157	{
	158	int ret = -ENODEV;
	159
e7435f86	160	if (machine_is_h3600() \|\| machine_is_h3100())
1da177e4 LT	161	ret = sa11xx_drv_pcmcia_probe(dev, &h3600_pcmcia_ops, 0, 2);
	162
	163	return ret;
	164	}