[mirror_ubuntu-bionic-kernel.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/kernel.h>
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/io.h>

#include <mach/hardware.h>
#include <asm/hardware/sa1111.h>
#include <asm/mach-types.h>

#include "sa1111_generic.h"

/* Does SOCKET1_3V actually do anything? */
#define SOCKET0_POWER	GPIO_GPIO0
#define SOCKET0_3V	GPIO_GPIO2
#define SOCKET1_POWER	(GPIO_GPIO1 | GPIO_GPIO3)
#define SOCKET1_3V	GPIO_GPIO3

static int
jornada720_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
{
	struct sa1111_pcmcia_socket *s = to_skt(skt);
	unsigned int pa_dwr_mask, pa_dwr_set;
	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:
		pa_dwr_mask = SOCKET0_POWER | SOCKET0_3V;

		switch (state->Vcc) {
		default:
		case  0:
			pa_dwr_set = 0;
			break;
		case 33:
			pa_dwr_set = SOCKET0_POWER | SOCKET0_3V;
			break;
		case 50:
			pa_dwr_set = SOCKET0_POWER;
			break;
		}
		break;

	case 1:
		pa_dwr_mask = SOCKET1_POWER;

		switch (state->Vcc) {
		default:
		case 0:
			pa_dwr_set = 0;
			break;
		case 33:
			pa_dwr_set = SOCKET1_POWER;
			break;
		case 50:
			pa_dwr_set = SOCKET1_POWER;
			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)
		sa1111_set_io(s->dev, pa_dwr_mask, pa_dwr_set);

	return ret;
}

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

int pcmcia_jornada720_init(struct sa1111_dev *sadev)
{
	unsigned int pin = GPIO_A0 | GPIO_A1 | GPIO_A2 | GPIO_A3;

	/* Fixme: why messing around with SA11x0's GPIO1? */
	GRER |= 0x00000002;

	/* Set GPIO_A<3:1> to be outputs for PCMCIA/CF power controller: */
	sa1111_set_io_dir(sadev, pin, 0, 0);
	sa1111_set_io(sadev, pin, 0);
	sa1111_set_sleep_io(sadev, pin, 0);

	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>
	9	#include <linux/kernel.h>
1da177e4 LT	10	#include <linux/device.h>
	11	#include <linux/errno.h>
	12	#include <linux/init.h>
58409f9d	13	#include <linux/io.h>
1da177e4	14
a09e64fb	15	#include <mach/hardware.h>
1da177e4 LT	16	#include <asm/hardware/sa1111.h>
	17	#include <asm/mach-types.h>
	18
	19	#include "sa1111_generic.h"
	20
02e87d1a KE	21	/* Does SOCKET1_3V actually do anything? */
	22	#define SOCKET0_POWER GPIO_GPIO0
	23	#define SOCKET0_3V GPIO_GPIO2
	24	#define SOCKET1_POWER (GPIO_GPIO1 \| GPIO_GPIO3)
1da177e4 LT	25	#define SOCKET1_3V GPIO_GPIO3
1da177e4 LT	26
1da177e4 LT	27	static int
	28	jornada720_pcmcia_configure_socket(struct soc_pcmcia_socket skt, const socket_state_t state)
	29	{
701a5dc0	30	struct sa1111_pcmcia_socket *s = to_skt(skt);
02e87d1a KE	31	unsigned int pa_dwr_mask, pa_dwr_set;
	32	int ret;
	33
	34	printk(KERN_INFO "%s(): config socket %d vcc %d vpp %d\n", __func__,
	35	skt->nr, state->Vcc, state->Vpp);
	36
	37	switch (skt->nr) {
	38	case 0:
	39	pa_dwr_mask = SOCKET0_POWER \| SOCKET0_3V;
	40
	41	switch (state->Vcc) {
	42	default:
	43	case 0:
	44	pa_dwr_set = 0;
	45	break;
	46	case 33:
	47	pa_dwr_set = SOCKET0_POWER \| SOCKET0_3V;
	48	break;
	49	case 50:
	50	pa_dwr_set = SOCKET0_POWER;
	51	break;
	52	}
	53	break;
	54
	55	case 1:
	56	pa_dwr_mask = SOCKET1_POWER;
	57
	58	switch (state->Vcc) {
	59	default:
	60	case 0:
	61	pa_dwr_set = 0;
	62	break;
	63	case 33:
	64	pa_dwr_set = SOCKET1_POWER;
	65	break;
	66	case 50:
	67	pa_dwr_set = SOCKET1_POWER;
	68	break;
	69	}
	70	break;
	71
	72	default:
	73	return -1;
	74	}
	75
	76	if (state->Vpp != state->Vcc && state->Vpp != 0) {
	77	printk(KERN_ERR "%s(): slot cannot support VPP %u\n",
	78	__func__, state->Vpp);
	79	return -EPERM;
	80	}
	81
	82	ret = sa1111_pcmcia_configure_socket(skt, state);
e2adbecf	83	if (ret == 0)
701a5dc0	84	sa1111_set_io(s->dev, pa_dwr_mask, pa_dwr_set);
02e87d1a KE	85
02e87d1a KE	86	return ret;
1da177e4 LT	87	}
	88
	89	static struct pcmcia_low_level jornada720_pcmcia_ops = {
02e87d1a	90	.owner = THIS_MODULE,
02e87d1a	91	.configure_socket = jornada720_pcmcia_configure_socket,
701a5dc0 RKAL	92	.first = 0,
701a5dc0 RKAL	93	.nr = 2,
1da177e4 LT	94	};
1da177e4 LT	95
4bc9ef29	96	int pcmcia_jornada720_init(struct sa1111_dev *sadev)
1da177e4	97	{
3f8df892	98	unsigned int pin = GPIO_A0 \| GPIO_A1 \| GPIO_A2 \| GPIO_A3;
1da177e4	99
3f8df892 RK	100	/* Fixme: why messing around with SA11x0's GPIO1? */
3f8df892 RK	101	GRER \|= 0x00000002;
dabd1468	102
3f8df892 RK	103	/* Set GPIO_A<3:1> to be outputs for PCMCIA/CF power controller: */
	104	sa1111_set_io_dir(sadev, pin, 0, 0);
	105	sa1111_set_io(sadev, pin, 0);
	106	sa1111_set_sleep_io(sadev, pin, 0);
dabd1468	107
3f8df892 RK	108	sa11xx_drv_pcmcia_ops(&jornada720_pcmcia_ops);
	109	return sa1111_pcmcia_add(sadev, &jornada720_pcmcia_ops,
	110	sa11xx_drv_pcmcia_add_one);
1da177e4	111	}