109 lines
2.4 KiB
C
109 lines
2.4 KiB
C
/*
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* drivers/pcmcia/sa1100_cerf.c
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*
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* PCMCIA implementation routines for CerfBoard
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* Based off the Assabet.
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*
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <mach/hardware.h>
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#include <asm/mach-types.h>
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#include <asm/irq.h>
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#include <mach/cerf.h>
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#include "sa1100_generic.h"
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#define CERF_SOCKET 1
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static struct pcmcia_irqs irqs[] = {
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{ CERF_SOCKET, CERF_IRQ_GPIO_CF_CD, "CF_CD" },
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{ CERF_SOCKET, CERF_IRQ_GPIO_CF_BVD2, "CF_BVD2" },
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{ CERF_SOCKET, CERF_IRQ_GPIO_CF_BVD1, "CF_BVD1" }
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};
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static int cerf_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
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{
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skt->irq = CERF_IRQ_GPIO_CF_IRQ;
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return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
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}
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static void cerf_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
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{
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soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
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}
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static void
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cerf_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
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{
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unsigned long levels = GPLR;
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state->detect = (levels & CERF_GPIO_CF_CD) ?0:1;
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state->ready = (levels & CERF_GPIO_CF_IRQ) ?1:0;
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state->bvd1 = (levels & CERF_GPIO_CF_BVD1)?1:0;
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state->bvd2 = (levels & CERF_GPIO_CF_BVD2)?1:0;
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state->wrprot = 0;
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state->vs_3v = 1;
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state->vs_Xv = 0;
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}
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static int
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cerf_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
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const socket_state_t *state)
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{
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switch (state->Vcc) {
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case 0:
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case 50:
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case 33:
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break;
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default:
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printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
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__func__, state->Vcc);
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return -1;
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}
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if (state->flags & SS_RESET) {
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GPSR = CERF_GPIO_CF_RESET;
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} else {
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GPCR = CERF_GPIO_CF_RESET;
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}
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return 0;
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}
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static void cerf_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
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{
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soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
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}
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static void cerf_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
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{
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soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
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}
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static struct pcmcia_low_level cerf_pcmcia_ops = {
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.owner = THIS_MODULE,
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.hw_init = cerf_pcmcia_hw_init,
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.hw_shutdown = cerf_pcmcia_hw_shutdown,
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.socket_state = cerf_pcmcia_socket_state,
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.configure_socket = cerf_pcmcia_configure_socket,
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.socket_init = cerf_pcmcia_socket_init,
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.socket_suspend = cerf_pcmcia_socket_suspend,
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};
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int __init pcmcia_cerf_init(struct device *dev)
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{
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int ret = -ENODEV;
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if (machine_is_cerf())
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ret = sa11xx_drv_pcmcia_probe(dev, &cerf_pcmcia_ops, CERF_SOCKET, 1);
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return ret;
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}
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