/* * 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; }