/* * drivers/pcmcia/sa1100_shannon.c * * PCMCIA implementation routines for Shannon * */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/sched.h> #include <linux/device.h> #include <linux/init.h> #include <asm/hardware.h> #include <asm/mach-types.h> #include <asm/arch/shannon.h> #include <asm/irq.h> #include "sa1100_generic.h" static struct pcmcia_irqs irqs[] = { { 0, SHANNON_IRQ_GPIO_EJECT_0, "PCMCIA_CD_0" }, { 1, SHANNON_IRQ_GPIO_EJECT_1, "PCMCIA_CD_1" }, }; static int shannon_pcmcia_hw_init(struct soc_pcmcia_socket *skt) { /* All those are inputs */ GPDR &= ~(SHANNON_GPIO_EJECT_0 | SHANNON_GPIO_EJECT_1 | SHANNON_GPIO_RDY_0 | SHANNON_GPIO_RDY_1); GAFR &= ~(SHANNON_GPIO_EJECT_0 | SHANNON_GPIO_EJECT_1 | SHANNON_GPIO_RDY_0 | SHANNON_GPIO_RDY_1); skt->irq = skt->nr ? SHANNON_IRQ_GPIO_RDY_1 : SHANNON_IRQ_GPIO_RDY_0; return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); } static void shannon_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) { soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); } static void shannon_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) { unsigned long levels = GPLR; switch (skt->nr) { case 0: state->detect = (levels & SHANNON_GPIO_EJECT_0) ? 0 : 1; state->ready = (levels & SHANNON_GPIO_RDY_0) ? 1 : 0; state->wrprot = 0; /* Not available on Shannon. */ state->bvd1 = 1; state->bvd2 = 1; state->vs_3v = 1; /* FIXME Can only apply 3.3V on Shannon. */ state->vs_Xv = 0; break; case 1: state->detect = (levels & SHANNON_GPIO_EJECT_1) ? 0 : 1; state->ready = (levels & SHANNON_GPIO_RDY_1) ? 1 : 0; state->wrprot = 0; /* Not available on Shannon. */ state->bvd1 = 1; state->bvd2 = 1; state->vs_3v = 1; /* FIXME Can only apply 3.3V on Shannon. */ state->vs_Xv = 0; break; } } static int shannon_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) { switch (state->Vcc) { case 0: /* power off */ printk(KERN_WARNING "%s(): CS asked for 0V, still applying 3.3V..\n", __FUNCTION__); break; case 50: printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V..\n", __FUNCTION__); case 33: break; default: printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__, state->Vcc); return -1; } printk(KERN_WARNING "%s(): Warning, Can't perform reset\n", __FUNCTION__); /* Silently ignore Vpp, output enable, speaker enable. */ return 0; } static void shannon_pcmcia_socket_init(struct soc_pcmcia_socket *skt) { soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs)); } static void shannon_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) { soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs)); } static struct pcmcia_low_level shannon_pcmcia_ops = { .owner = THIS_MODULE, .hw_init = shannon_pcmcia_hw_init, .hw_shutdown = shannon_pcmcia_hw_shutdown, .socket_state = shannon_pcmcia_socket_state, .configure_socket = shannon_pcmcia_configure_socket, .socket_init = shannon_pcmcia_socket_init, .socket_suspend = shannon_pcmcia_socket_suspend, }; int __init pcmcia_shannon_init(struct device *dev) { int ret = -ENODEV; if (machine_is_shannon()) ret = sa11xx_drv_pcmcia_probe(dev, &shannon_pcmcia_ops, 0, 2); return ret; }