[mirror_ubuntu-bionic-kernel.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;

	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
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
2a837091 DA	27	switch (skt->nr) {
2a837091 DA	28	case 0:
65474b45 RK	29	skt->stat[SOC_STAT_CD].gpio = H3XXX_GPIO_PCMCIA_CD0;
	30	skt->stat[SOC_STAT_CD].name = "PCMCIA CD0";
	31	skt->stat[SOC_STAT_RDY].gpio = H3XXX_GPIO_PCMCIA_IRQ0;
	32	skt->stat[SOC_STAT_RDY].name = "PCMCIA IRQ0";
2a837091	33
22f97405	34	err = gpio_request(H3XXX_EGPIO_OPT_NVRAM_ON, "OPT NVRAM ON");
2a837091	35	if (err)
65474b45	36	goto err01;
22f97405 DA	37	err = gpio_direction_output(H3XXX_EGPIO_OPT_NVRAM_ON, 0);
	38	if (err)
	39	goto err03;
	40	err = gpio_request(H3XXX_EGPIO_OPT_ON, "OPT ON");
	41	if (err)
	42	goto err03;
	43	err = gpio_direction_output(H3XXX_EGPIO_OPT_ON, 0);
	44	if (err)
	45	goto err04;
	46	err = gpio_request(H3XXX_EGPIO_OPT_RESET, "OPT RESET");
	47	if (err)
	48	goto err04;
	49	err = gpio_direction_output(H3XXX_EGPIO_OPT_RESET, 0);
	50	if (err)
	51	goto err05;
	52	err = gpio_request(H3XXX_EGPIO_CARD_RESET, "PCMCIA CARD RESET");
	53	if (err)
	54	goto err05;
	55	err = gpio_direction_output(H3XXX_EGPIO_CARD_RESET, 0);
22f97405 DA	56	if (err)
22f97405 DA	57	goto err06;
2a837091 DA	58	break;
2a837091 DA	59	case 1:
65474b45 RK	60	skt->stat[SOC_STAT_CD].gpio = H3XXX_GPIO_PCMCIA_CD1;
	61	skt->stat[SOC_STAT_CD].name = "PCMCIA CD1";
	62	skt->stat[SOC_STAT_RDY].gpio = H3XXX_GPIO_PCMCIA_IRQ1;
	63	skt->stat[SOC_STAT_RDY].name = "PCMCIA IRQ1";
2a837091 DA	64	break;
	65	}
	66	return 0;
	67
22f97405 DA	68	err06: gpio_free(H3XXX_EGPIO_CARD_RESET);
	69	err05: gpio_free(H3XXX_EGPIO_OPT_RESET);
	70	err04: gpio_free(H3XXX_EGPIO_OPT_ON);
	71	err03: gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON);
2a837091	72	err01: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0);
65474b45	73	return err;
1da177e4 LT	74	}
	75
	76	static void h3600_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
	77	{
2a837091 DA	78	switch (skt->nr) {
2a837091 DA	79	case 0:
22f97405 DA	80	/* Disable CF bus: */
	81	gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0);
	82	gpio_set_value(H3XXX_EGPIO_OPT_ON, 0);
	83	gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1);
	84
	85	gpio_free(H3XXX_EGPIO_CARD_RESET);
	86	gpio_free(H3XXX_EGPIO_OPT_RESET);
	87	gpio_free(H3XXX_EGPIO_OPT_ON);
	88	gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON);
2a837091 DA	89	break;
2a837091 DA	90	case 1:
2a837091 DA	91	break;
2a837091 DA	92	}
1da177e4 LT	93	}
	94
	95	static void
	96	h3600_pcmcia_socket_state(struct soc_pcmcia_socket skt, struct pcmcia_state state)
	97	{
65474b45 RK	98	state->bvd1 = 0;
65474b45 RK	99	state->bvd2 = 0;
65474b45 RK	100	state->vs_3v = 0;
65474b45 RK	101	state->vs_Xv = 0;
1da177e4 LT	102	}
	103
	104	static int
	105	h3600_pcmcia_configure_socket(struct soc_pcmcia_socket skt, const socket_state_t state)
	106	{
	107	if (state->Vcc != 0 && state->Vcc != 33 && state->Vcc != 50) {
	108	printk(KERN_ERR "h3600_pcmcia: unrecognized Vcc %u.%uV\n",
	109	state->Vcc / 10, state->Vcc % 10);
	110	return -1;
	111	}
	112
22f97405	113	gpio_set_value(H3XXX_EGPIO_CARD_RESET, !!(state->flags & SS_RESET));
1da177e4 LT	114
	115	/* Silently ignore Vpp, output enable, speaker enable. */
	116
	117	return 0;
	118	}
	119
	120	static void h3600_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
	121	{
	122	/* Enable CF bus: */
22f97405 DA	123	gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 1);
	124	gpio_set_value(H3XXX_EGPIO_OPT_ON, 1);
	125	gpio_set_value(H3XXX_EGPIO_OPT_RESET, 0);
1da177e4 LT	126
1da177e4 LT	127	msleep(10);
1da177e4 LT	128	}
	129
	130	static void h3600_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
	131	{
1da177e4 LT	132	/*
	133	* FIXME: This doesn't fit well. We don't have the mechanism in
	134	* the generic PCMCIA layer to deal with the idea of two sockets
	135	* on one bus. We rely on the cs.c behaviour shutting down
	136	* socket 0 then socket 1.
	137	*/
	138	if (skt->nr == 1) {
22f97405 DA	139	gpio_set_value(H3XXX_EGPIO_OPT_ON, 0);
22f97405 DA	140	gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0);
1da177e4	141	/* hmm, does this suck power? */
22f97405	142	gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1);
1da177e4 LT	143	}
	144	}
	145
	146	struct pcmcia_low_level h3600_pcmcia_ops = {
	147	.owner = THIS_MODULE,
	148	.hw_init = h3600_pcmcia_hw_init,
	149	.hw_shutdown = h3600_pcmcia_hw_shutdown,
	150	.socket_state = h3600_pcmcia_socket_state,
	151	.configure_socket = h3600_pcmcia_configure_socket,
	152
	153	.socket_init = h3600_pcmcia_socket_init,
	154	.socket_suspend = h3600_pcmcia_socket_suspend,
	155	};
	156
34cdf25a	157	int pcmcia_h3600_init(struct device *dev)
1da177e4 LT	158	{
	159	int ret = -ENODEV;
	160
e7435f86	161	if (machine_is_h3600() \|\| machine_is_h3100())
1da177e4 LT	162	ret = sa11xx_drv_pcmcia_probe(dev, &h3600_pcmcia_ops, 0, 2);
	163
	164	return ret;
	165	}