1/*
  2 * drivers/pcmcia/sa1100_cerf.c
  3 *
  4 * PCMCIA implementation routines for CerfBoard
  5 * Based off the Assabet.
  6 *
  7 */
  8#include <linux/module.h>
  9#include <linux/kernel.h>
 10#include <linux/device.h>
 11#include <linux/init.h>
 12#include <linux/delay.h>
 13
 14#include <mach/hardware.h>
 15#include <asm/mach-types.h>
 16#include <asm/irq.h>
 17#include <mach/cerf.h>
 18#include "sa1100_generic.h"
 19
 20#define CERF_SOCKET	1
 21
 22static struct pcmcia_irqs irqs[] = {
 23	{ CERF_SOCKET, CERF_IRQ_GPIO_CF_CD,   "CF_CD"   },
 24	{ CERF_SOCKET, CERF_IRQ_GPIO_CF_BVD2, "CF_BVD2" },
 25	{ CERF_SOCKET, CERF_IRQ_GPIO_CF_BVD1, "CF_BVD1" }
 26};
 27
 28static int cerf_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
 29{
 30	skt->socket.pci_irq = CERF_IRQ_GPIO_CF_IRQ;
 31
 32	return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
 33}
 34
 35static void cerf_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
 36{
 37	soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
 38}
 39
 40static void
 41cerf_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
 42{
 43	unsigned long levels = GPLR;
 44
 45	state->detect	= (levels & CERF_GPIO_CF_CD)  ?0:1;
 46	state->ready	= (levels & CERF_GPIO_CF_IRQ) ?1:0;
 47	state->bvd1	= (levels & CERF_GPIO_CF_BVD1)?1:0;
 48	state->bvd2	= (levels & CERF_GPIO_CF_BVD2)?1:0;
 49	state->wrprot	= 0;
 50	state->vs_3v	= 1;
 51	state->vs_Xv	= 0;
 52}
 53
 54static int
 55cerf_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
 56			     const socket_state_t *state)
 57{
 58	switch (state->Vcc) {
 59	case 0:
 60	case 50:
 61	case 33:
 62		break;
 63
 64	default:
 65		printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
 66			__func__, state->Vcc);
 67		return -1;
 68	}
 69
 70	if (state->flags & SS_RESET) {
 71		GPSR = CERF_GPIO_CF_RESET;
 72	} else {
 73		GPCR = CERF_GPIO_CF_RESET;
 74	}
 75
 76	return 0;
 77}
 78
 79static void cerf_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
 80{
 81	soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
 82}
 83
 84static void cerf_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
 85{
 86	soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
 87}
 88
 89static struct pcmcia_low_level cerf_pcmcia_ops = { 
 90	.owner			= THIS_MODULE,
 91	.hw_init		= cerf_pcmcia_hw_init,
 92	.hw_shutdown		= cerf_pcmcia_hw_shutdown,
 93	.socket_state		= cerf_pcmcia_socket_state,
 94	.configure_socket	= cerf_pcmcia_configure_socket,
 95
 96	.socket_init		= cerf_pcmcia_socket_init,
 97	.socket_suspend		= cerf_pcmcia_socket_suspend,
 98};
 99
100int __devinit pcmcia_cerf_init(struct device *dev)
101{
102	int ret = -ENODEV;
103
104	if (machine_is_cerf())
105		ret = sa11xx_drv_pcmcia_probe(dev, &cerf_pcmcia_ops, CERF_SOCKET, 1);
106
107	return ret;
108}