/* * drivers/pcmcia/sa1100_simpad.c * * PCMCIA implementation routines for simpad * */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/device.h> #include <linux/init.h> #include <asm/hardware.h> #include <asm/mach-types.h> #include <asm/irq.h> #include <asm/arch/simpad.h> #include "sa1100_generic.h" extern long get_cs3_shadow(void); extern void set_cs3_bit(int value); extern void clear_cs3_bit(int value); static struct pcmcia_irqs irqs[] = { { 1, IRQ_GPIO_CF_CD, "CF_CD" }, }; static int simpad_pcmcia_hw_init(struct soc_pcmcia_socket *skt) { clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1); skt->irq = IRQ_GPIO_CF_IRQ; return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); } static void simpad_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) { soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); /* Disable CF bus: */ //set_cs3_bit(PCMCIA_BUFF_DIS); clear_cs3_bit(PCMCIA_RESET); } static void simpad_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) { unsigned long levels = GPLR; long cs3reg = get_cs3_shadow(); state->detect=((levels & GPIO_CF_CD)==0)?1:0; state->ready=(levels & GPIO_CF_IRQ)?1:0; state->bvd1=1; /* Not available on Simpad. */ state->bvd2=1; /* Not available on Simpad. */ state->wrprot=0; /* Not available on Simpad. */ if((cs3reg & 0x0c) == 0x0c) { state->vs_3v=0; state->vs_Xv=0; } else { state->vs_3v=1; state->vs_Xv=0; } } static int simpad_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) { unsigned long flags; local_irq_save(flags); /* Murphy: see table of MIC2562a-1 */ switch (state->Vcc) { case 0: clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1); break; case 33: clear_cs3_bit(VCC_3V_EN|EN1); set_cs3_bit(VCC_5V_EN|EN0); break; case 50: clear_cs3_bit(VCC_5V_EN|EN1); set_cs3_bit(VCC_3V_EN|EN0); break; default: printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__, state->Vcc); clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1); local_irq_restore(flags); return -1; } local_irq_restore(flags); return 0; } static void simpad_pcmcia_socket_init(struct soc_pcmcia_socket *skt) { soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs)); } static void simpad_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) { soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs)); set_cs3_bit(PCMCIA_RESET); } static struct pcmcia_low_level simpad_pcmcia_ops = { .owner = THIS_MODULE, .hw_init = simpad_pcmcia_hw_init, .hw_shutdown = simpad_pcmcia_hw_shutdown, .socket_state = simpad_pcmcia_socket_state, .configure_socket = simpad_pcmcia_configure_socket, .socket_init = simpad_pcmcia_socket_init, .socket_suspend = simpad_pcmcia_socket_suspend, }; int __init pcmcia_simpad_init(struct device *dev) { int ret = -ENODEV; if (machine_is_simpad()) ret = sa11xx_drv_pcmcia_probe(dev, &simpad_pcmcia_ops, 1, 1); return ret; }