[linux-2.6-block.git] / drivers / pcmcia / sa1111_jornada720.c

// SPDX-License-Identifier: GPL-2.0
/*
 * drivers/pcmcia/sa1100_jornada720.c
 *
 * Jornada720 PCMCIA specific routines
 *
 */
#include <linux/module.h>
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/gpio/consumer.h>
#include <linux/init.h>
#include <linux/io.h>

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

#include "sa1111_generic.h"

/*
 * Socket 0 power: GPIO A0
 * Socket 0 3V: GPIO A2
 * Socket 1 power: GPIO A1 & GPIO A3
 * Socket 1 3V: GPIO A3
 * Does Socket 1 3V actually do anything?
 */
enum {
	J720_GPIO_PWR,
	J720_GPIO_3V,
	J720_GPIO_MAX,
};
struct jornada720_data {
	struct gpio_desc *gpio[J720_GPIO_MAX];
};

static int jornada720_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	struct device *dev = skt->socket.dev.parent;
	struct jornada720_data *j;

	j = devm_kzalloc(dev, sizeof(*j), GFP_KERNEL);
	if (!j)
		return -ENOMEM;

	j->gpio[J720_GPIO_PWR] = devm_gpiod_get(dev, skt->nr ? "s1-power" :
						"s0-power", GPIOD_OUT_LOW);
	if (IS_ERR(j->gpio[J720_GPIO_PWR]))
		return PTR_ERR(j->gpio[J720_GPIO_PWR]);

	j->gpio[J720_GPIO_3V] = devm_gpiod_get(dev, skt->nr ? "s1-3v" :
					       "s0-3v", GPIOD_OUT_LOW);
	if (IS_ERR(j->gpio[J720_GPIO_3V]))
		return PTR_ERR(j->gpio[J720_GPIO_3V]);

	skt->driver_data = j;

	return 0;
}

static int
jornada720_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
{
	struct jornada720_data *j = skt->driver_data;
	DECLARE_BITMAP(values, J720_GPIO_MAX) = { 0, };
	int ret;

	printk(KERN_INFO "%s(): config socket %d vcc %d vpp %d\n", __func__,
		skt->nr, state->Vcc, state->Vpp);

	switch (skt->nr) {
	case 0:
		switch (state->Vcc) {
		default:
		case  0:
			__assign_bit(J720_GPIO_PWR, values, 0);
			__assign_bit(J720_GPIO_3V, values, 0);
			break;
		case 33:
			__assign_bit(J720_GPIO_PWR, values, 1);
			__assign_bit(J720_GPIO_3V, values, 1);
			break;
		case 50:
			__assign_bit(J720_GPIO_PWR, values, 1);
			__assign_bit(J720_GPIO_3V, values, 0);
			break;
		}
		break;

	case 1:
		switch (state->Vcc) {
		default:
		case 0:
			__assign_bit(J720_GPIO_PWR, values, 0);
			__assign_bit(J720_GPIO_3V, values, 0);
			break;
		case 33:
		case 50:
			__assign_bit(J720_GPIO_PWR, values, 1);
			__assign_bit(J720_GPIO_3V, values, 1);
			break;
		}
		break;

	default:
		return -1;
	}

	if (state->Vpp != state->Vcc && state->Vpp != 0) {
		printk(KERN_ERR "%s(): slot cannot support VPP %u\n",
			__func__, state->Vpp);
		return -EPERM;
	}

	ret = sa1111_pcmcia_configure_socket(skt, state);
	if (ret == 0)
		ret = gpiod_set_array_value_cansleep(J720_GPIO_MAX, j->gpio,
						     NULL, values);

	return ret;
}

static struct pcmcia_low_level jornada720_pcmcia_ops = {
	.owner			= THIS_MODULE,
	.hw_init		= jornada720_pcmcia_hw_init,
	.configure_socket	= jornada720_pcmcia_configure_socket,
	.first			= 0,
	.nr			= 2,
};

int pcmcia_jornada720_init(struct sa1111_dev *sadev)
{
	/* Fixme: why messing around with SA11x0's GPIO1? */
	GRER |= 0x00000002;

	sa11xx_drv_pcmcia_ops(&jornada720_pcmcia_ops);
	return sa1111_pcmcia_add(sadev, &jornada720_pcmcia_ops,
				 sa11xx_drv_pcmcia_add_one);
}
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
1da177e4 LT	2	/*
	3	* drivers/pcmcia/sa1100_jornada720.c
	4	*
	5	* Jornada720 PCMCIA specific routines
	6	*
	7	*/
	8	#include <linux/module.h>
1da177e4 LT	9	#include <linux/device.h>
1da177e4 LT	10	#include <linux/errno.h>
b96e6c01	11	#include <linux/gpio/consumer.h>
1da177e4	12	#include <linux/init.h>
58409f9d	13	#include <linux/io.h>
1da177e4	14
a09e64fb	15	#include <mach/hardware.h>
1da177e4 LT	16	#include <asm/mach-types.h>
	17
	18	#include "sa1111_generic.h"
	19
b96e6c01 RK	20	/*
	21	* Socket 0 power: GPIO A0
	22	* Socket 0 3V: GPIO A2
	23	* Socket 1 power: GPIO A1 & GPIO A3
	24	* Socket 1 3V: GPIO A3
	25	* Does Socket 1 3V actually do anything?
	26	*/
	27	enum {
	28	J720_GPIO_PWR,
	29	J720_GPIO_3V,
	30	J720_GPIO_MAX,
	31	};
	32	struct jornada720_data {
	33	struct gpio_desc *gpio[J720_GPIO_MAX];
	34	};
	35
	36	static int jornada720_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
	37	{
	38	struct device *dev = skt->socket.dev.parent;
	39	struct jornada720_data *j;
	40
	41	j = devm_kzalloc(dev, sizeof(*j), GFP_KERNEL);
	42	if (!j)
	43	return -ENOMEM;
	44
	45	j->gpio[J720_GPIO_PWR] = devm_gpiod_get(dev, skt->nr ? "s1-power" :
	46	"s0-power", GPIOD_OUT_LOW);
	47	if (IS_ERR(j->gpio[J720_GPIO_PWR]))
	48	return PTR_ERR(j->gpio[J720_GPIO_PWR]);
	49
	50	j->gpio[J720_GPIO_3V] = devm_gpiod_get(dev, skt->nr ? "s1-3v" :
	51	"s0-3v", GPIOD_OUT_LOW);
	52	if (IS_ERR(j->gpio[J720_GPIO_3V]))
	53	return PTR_ERR(j->gpio[J720_GPIO_3V]);
	54
	55	skt->driver_data = j;
	56
	57	return 0;
	58	}
1da177e4	59
1da177e4 LT	60	static int
	61	jornada720_pcmcia_configure_socket(struct soc_pcmcia_socket skt, const socket_state_t state)
	62	{
b96e6c01 RK	63	struct jornada720_data *j = skt->driver_data;
b96e6c01 RK	64	DECLARE_BITMAP(values, J720_GPIO_MAX) = { 0, };
02e87d1a KE	65	int ret;
	66
	67	printk(KERN_INFO "%s(): config socket %d vcc %d vpp %d\n", __func__,
	68	skt->nr, state->Vcc, state->Vpp);
	69
	70	switch (skt->nr) {
	71	case 0:
02e87d1a KE	72	switch (state->Vcc) {
	73	default:
	74	case 0:
b96e6c01 RK	75	__assign_bit(J720_GPIO_PWR, values, 0);
b96e6c01 RK	76	__assign_bit(J720_GPIO_3V, values, 0);
02e87d1a KE	77	break;
02e87d1a KE	78	case 33:
b96e6c01 RK	79	__assign_bit(J720_GPIO_PWR, values, 1);
b96e6c01 RK	80	__assign_bit(J720_GPIO_3V, values, 1);
02e87d1a KE	81	break;
02e87d1a KE	82	case 50:
b96e6c01 RK	83	__assign_bit(J720_GPIO_PWR, values, 1);
b96e6c01 RK	84	__assign_bit(J720_GPIO_3V, values, 0);
02e87d1a KE	85	break;
	86	}
	87	break;
	88
	89	case 1:
02e87d1a KE	90	switch (state->Vcc) {
	91	default:
	92	case 0:
b96e6c01 RK	93	__assign_bit(J720_GPIO_PWR, values, 0);
b96e6c01 RK	94	__assign_bit(J720_GPIO_3V, values, 0);
02e87d1a KE	95	break;
02e87d1a KE	96	case 33:
02e87d1a	97	case 50:
b96e6c01 RK	98	__assign_bit(J720_GPIO_PWR, values, 1);
b96e6c01 RK	99	__assign_bit(J720_GPIO_3V, values, 1);
02e87d1a KE	100	break;
	101	}
	102	break;
	103
	104	default:
	105	return -1;
	106	}
	107
	108	if (state->Vpp != state->Vcc && state->Vpp != 0) {
	109	printk(KERN_ERR "%s(): slot cannot support VPP %u\n",
	110	__func__, state->Vpp);
	111	return -EPERM;
	112	}
	113
	114	ret = sa1111_pcmcia_configure_socket(skt, state);
e2adbecf	115	if (ret == 0)
b96e6c01 RK	116	ret = gpiod_set_array_value_cansleep(J720_GPIO_MAX, j->gpio,
b96e6c01 RK	117	NULL, values);
02e87d1a KE	118
02e87d1a KE	119	return ret;
1da177e4 LT	120	}
	121
	122	static struct pcmcia_low_level jornada720_pcmcia_ops = {
02e87d1a	123	.owner = THIS_MODULE,
b96e6c01	124	.hw_init = jornada720_pcmcia_hw_init,
02e87d1a	125	.configure_socket = jornada720_pcmcia_configure_socket,
701a5dc0 RKAL	126	.first = 0,
701a5dc0 RKAL	127	.nr = 2,
1da177e4 LT	128	};
1da177e4 LT	129
4bc9ef29	130	int pcmcia_jornada720_init(struct sa1111_dev *sadev)
1da177e4	131	{
3f8df892 RK	132	/* Fixme: why messing around with SA11x0's GPIO1? */
3f8df892 RK	133	GRER \|= 0x00000002;
dabd1468	134
3f8df892 RK	135	sa11xx_drv_pcmcia_ops(&jornada720_pcmcia_ops);
	136	return sa1111_pcmcia_add(sadev, &jornada720_pcmcia_ops,
	137	sa11xx_drv_pcmcia_add_one);
1da177e4	138	}