1// SPDX-License-Identifier: GPL-2.0
  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>
 10#include <linux/device.h>
 11#include <linux/errno.h>
 12#include <linux/init.h>
 13#include <linux/io.h>
 14
 15#include <mach/hardware.h>
 16#include <asm/hardware/sa1111.h>
 17#include <asm/mach-types.h>
 18
 19#include "sa1111_generic.h"
 20
 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)
 25#define SOCKET1_3V	GPIO_GPIO3
 26
 27static int
 28jornada720_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
 29{
 30	struct sa1111_pcmcia_socket *s = to_skt(skt);
 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);
 83	if (ret == 0)
 84		sa1111_set_io(s->dev, pa_dwr_mask, pa_dwr_set);
 85
 86	return ret;
 87}
 88
 89static struct pcmcia_low_level jornada720_pcmcia_ops = {
 90	.owner			= THIS_MODULE,
 91	.configure_socket	= jornada720_pcmcia_configure_socket,
 92	.first			= 0,
 93	.nr			= 2,
 94};
 95
 96int pcmcia_jornada720_init(struct sa1111_dev *sadev)
 97{
 98	unsigned int pin = GPIO_A0 | GPIO_A1 | GPIO_A2 | GPIO_A3;
 99
100	/* Fixme: why messing around with SA11x0's GPIO1? */
101	GRER |= 0x00000002;
102
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);
107
108	sa11xx_drv_pcmcia_ops(&jornada720_pcmcia_ops);
109	return sa1111_pcmcia_add(sadev, &jornada720_pcmcia_ops,
110				 sa11xx_drv_pcmcia_add_one);
111}