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- /*
- * drivers/pcmcia/sa1100_assabet.c
- *
- * PCMCIA implementation routines for Assabet
- *
- */
- #include <linux/module.h>
- #include <linux/kernel.h>
- #include <linux/errno.h>
- #include <linux/interrupt.h>
- #include <linux/device.h>
- #include <linux/init.h>
- #include <asm/hardware.h>
- #include <asm/mach-types.h>
- #include <asm/irq.h>
- #include <asm/signal.h>
- #include <asm/arch/assabet.h>
- #include "sa1100_generic.h"
- static struct pcmcia_irqs irqs[] = {
- { 1, ASSABET_IRQ_GPIO_CF_CD, "CF CD" },
- { 1, ASSABET_IRQ_GPIO_CF_BVD2, "CF BVD2" },
- { 1, ASSABET_IRQ_GPIO_CF_BVD1, "CF BVD1" },
- };
- static int assabet_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
- {
- skt->irq = ASSABET_IRQ_GPIO_CF_IRQ;
- return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
- }
- /*
- * Release all resources.
- */
- static void assabet_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
- {
- soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
- }
- static void
- assabet_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
- {
- unsigned long levels = GPLR;
- state->detect = (levels & ASSABET_GPIO_CF_CD) ? 0 : 1;
- state->ready = (levels & ASSABET_GPIO_CF_IRQ) ? 1 : 0;
- state->bvd1 = (levels & ASSABET_GPIO_CF_BVD1) ? 1 : 0;
- state->bvd2 = (levels & ASSABET_GPIO_CF_BVD2) ? 1 : 0;
- state->wrprot = 0; /* Not available on Assabet. */
- state->vs_3v = 1; /* Can only apply 3.3V on Assabet. */
- state->vs_Xv = 0;
- }
- static int
- assabet_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
- {
- unsigned int mask;
- switch (state->Vcc) {
- case 0:
- mask = 0;
- break;
- case 50:
- printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n",
- __FUNCTION__);
- case 33: /* Can only apply 3.3V to the CF slot. */
- mask = ASSABET_BCR_CF_PWR;
- break;
- default:
- printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__,
- state->Vcc);
- return -1;
- }
- /* Silently ignore Vpp, output enable, speaker enable. */
- if (state->flags & SS_RESET)
- mask |= ASSABET_BCR_CF_RST;
- ASSABET_BCR_frob(ASSABET_BCR_CF_RST | ASSABET_BCR_CF_PWR, mask);
- return 0;
- }
- /*
- * Enable card status IRQs on (re-)initialisation. This can
- * be called at initialisation, power management event, or
- * pcmcia event.
- */
- static void assabet_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
- {
- /*
- * Enable CF bus
- */
- ASSABET_BCR_clear(ASSABET_BCR_CF_BUS_OFF);
- soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
- }
- /*
- * Disable card status IRQs on suspend.
- */
- static void assabet_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
- {
- soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
- /*
- * Tristate the CF bus signals. Also assert CF
- * reset as per user guide page 4-11.
- */
- ASSABET_BCR_set(ASSABET_BCR_CF_BUS_OFF | ASSABET_BCR_CF_RST);
- }
- static struct pcmcia_low_level assabet_pcmcia_ops = {
- .owner = THIS_MODULE,
- .hw_init = assabet_pcmcia_hw_init,
- .hw_shutdown = assabet_pcmcia_hw_shutdown,
- .socket_state = assabet_pcmcia_socket_state,
- .configure_socket = assabet_pcmcia_configure_socket,
- .socket_init = assabet_pcmcia_socket_init,
- .socket_suspend = assabet_pcmcia_socket_suspend,
- };
- int __init pcmcia_assabet_init(struct device *dev)
- {
- int ret = -ENODEV;
- if (machine_is_assabet() && !machine_has_neponset())
- ret = sa11xx_drv_pcmcia_probe(dev, &assabet_pcmcia_ops, 1, 1);
- return ret;
- }
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