[mirror_ubuntu-kernels.git] / drivers / pcmcia / sa1100_h3600.c

// SPDX-License-Identifier: GPL-2.0
/*
 * 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;

	skt->stat[SOC_STAT_CD].name = skt->nr ? "pcmcia1-detect" : "pcmcia0-detect";
	skt->stat[SOC_STAT_RDY].name = skt->nr ? "pcmcia1-ready" : "pcmcia0-ready";

	err = soc_pcmcia_request_gpiods(skt);
	if (err)
		return err;

	switch (skt->nr) {
	case 0:
		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:
		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
b2441318	1	// SPDX-License-Identifier: GPL-2.0
1da177e4 LT	2	/*
	3	* drivers/pcmcia/sa1100_h3600.c
	4	*
	5	* PCMCIA implementation routines for H3600
	6	*
	7	*/
	8	#include <linux/module.h>
	9	#include <linux/kernel.h>
1da177e4 LT	10	#include <linux/device.h>
	11	#include <linux/interrupt.h>
	12	#include <linux/init.h>
	13	#include <linux/delay.h>
2a837091	14	#include <linux/gpio.h>
1da177e4	15
a09e64fb	16	#include <mach/hardware.h>
1da177e4 LT	17	#include <asm/irq.h>
1da177e4 LT	18	#include <asm/mach-types.h>
8715b29d	19	#include <mach/h3xxx.h>
1da177e4 LT	20
	21	#include "sa1100_generic.h"
	22
1da177e4 LT	23	static int h3600_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
1da177e4 LT	24	{
2a837091	25	int err;
1da177e4	26
a00315d1 RK	27	skt->stat[SOC_STAT_CD].name = skt->nr ? "pcmcia1-detect" : "pcmcia0-detect";
	28	skt->stat[SOC_STAT_RDY].name = skt->nr ? "pcmcia1-ready" : "pcmcia0-ready";
	29
	30	err = soc_pcmcia_request_gpiods(skt);
	31	if (err)
	32	return err;
	33
2a837091 DA	34	switch (skt->nr) {
2a837091 DA	35	case 0:
22f97405	36	err = gpio_request(H3XXX_EGPIO_OPT_NVRAM_ON, "OPT NVRAM ON");
2a837091	37	if (err)
65474b45	38	goto err01;
22f97405 DA	39	err = gpio_direction_output(H3XXX_EGPIO_OPT_NVRAM_ON, 0);
	40	if (err)
	41	goto err03;
	42	err = gpio_request(H3XXX_EGPIO_OPT_ON, "OPT ON");
	43	if (err)
	44	goto err03;
	45	err = gpio_direction_output(H3XXX_EGPIO_OPT_ON, 0);
	46	if (err)
	47	goto err04;
	48	err = gpio_request(H3XXX_EGPIO_OPT_RESET, "OPT RESET");
	49	if (err)
	50	goto err04;
	51	err = gpio_direction_output(H3XXX_EGPIO_OPT_RESET, 0);
	52	if (err)
	53	goto err05;
	54	err = gpio_request(H3XXX_EGPIO_CARD_RESET, "PCMCIA CARD RESET");
	55	if (err)
	56	goto err05;
	57	err = gpio_direction_output(H3XXX_EGPIO_CARD_RESET, 0);
22f97405 DA	58	if (err)
22f97405 DA	59	goto err06;
2a837091 DA	60	break;
2a837091 DA	61	case 1:
2a837091 DA	62	break;
	63	}
	64	return 0;
	65
22f97405 DA	66	err06: gpio_free(H3XXX_EGPIO_CARD_RESET);
	67	err05: gpio_free(H3XXX_EGPIO_OPT_RESET);
	68	err04: gpio_free(H3XXX_EGPIO_OPT_ON);
	69	err03: gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON);
2a837091	70	err01: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0);
65474b45	71	return err;
1da177e4 LT	72	}
	73
	74	static void h3600_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
	75	{
2a837091 DA	76	switch (skt->nr) {
2a837091 DA	77	case 0:
22f97405 DA	78	/* Disable CF bus: */
	79	gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0);
	80	gpio_set_value(H3XXX_EGPIO_OPT_ON, 0);
	81	gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1);
	82
	83	gpio_free(H3XXX_EGPIO_CARD_RESET);
	84	gpio_free(H3XXX_EGPIO_OPT_RESET);
	85	gpio_free(H3XXX_EGPIO_OPT_ON);
	86	gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON);
2a837091 DA	87	break;
2a837091 DA	88	case 1:
2a837091 DA	89	break;
2a837091 DA	90	}
1da177e4 LT	91	}
	92
	93	static void
	94	h3600_pcmcia_socket_state(struct soc_pcmcia_socket skt, struct pcmcia_state state)
	95	{
65474b45 RK	96	state->bvd1 = 0;
65474b45 RK	97	state->bvd2 = 0;
65474b45 RK	98	state->vs_3v = 0;
65474b45 RK	99	state->vs_Xv = 0;
1da177e4 LT	100	}
	101
	102	static int
	103	h3600_pcmcia_configure_socket(struct soc_pcmcia_socket skt, const socket_state_t state)
	104	{
	105	if (state->Vcc != 0 && state->Vcc != 33 && state->Vcc != 50) {
	106	printk(KERN_ERR "h3600_pcmcia: unrecognized Vcc %u.%uV\n",
	107	state->Vcc / 10, state->Vcc % 10);
	108	return -1;
	109	}
	110
22f97405	111	gpio_set_value(H3XXX_EGPIO_CARD_RESET, !!(state->flags & SS_RESET));
1da177e4 LT	112
	113	/* Silently ignore Vpp, output enable, speaker enable. */
	114
	115	return 0;
	116	}
	117
	118	static void h3600_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
	119	{
	120	/* Enable CF bus: */
22f97405 DA	121	gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 1);
	122	gpio_set_value(H3XXX_EGPIO_OPT_ON, 1);
	123	gpio_set_value(H3XXX_EGPIO_OPT_RESET, 0);
1da177e4 LT	124
1da177e4 LT	125	msleep(10);
1da177e4 LT	126	}
	127
	128	static void h3600_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
	129	{
1da177e4 LT	130	/*
	131	* FIXME: This doesn't fit well. We don't have the mechanism in
	132	* the generic PCMCIA layer to deal with the idea of two sockets
	133	* on one bus. We rely on the cs.c behaviour shutting down
	134	* socket 0 then socket 1.
	135	*/
	136	if (skt->nr == 1) {
22f97405 DA	137	gpio_set_value(H3XXX_EGPIO_OPT_ON, 0);
22f97405 DA	138	gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0);
1da177e4	139	/* hmm, does this suck power? */
22f97405	140	gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1);
1da177e4 LT	141	}
	142	}
	143
	144	struct pcmcia_low_level h3600_pcmcia_ops = {
	145	.owner = THIS_MODULE,
	146	.hw_init = h3600_pcmcia_hw_init,
	147	.hw_shutdown = h3600_pcmcia_hw_shutdown,
	148	.socket_state = h3600_pcmcia_socket_state,
	149	.configure_socket = h3600_pcmcia_configure_socket,
	150
	151	.socket_init = h3600_pcmcia_socket_init,
	152	.socket_suspend = h3600_pcmcia_socket_suspend,
	153	};
	154
34cdf25a	155	int pcmcia_h3600_init(struct device *dev)
1da177e4 LT	156	{
	157	int ret = -ENODEV;
	158
e7435f86	159	if (machine_is_h3600() \|\| machine_is_h3100())
1da177e4 LT	160	ret = sa11xx_drv_pcmcia_probe(dev, &h3600_pcmcia_ops, 0, 2);
	161
	162	return ret;
	163	}