/* * * MyCable board specific pcmcia routines. * * Copyright 2003 MontaVista Software Inc. * Author: Pete Popov, MontaVista Software, Inc. * ppopov@mvista.com or source@mvista.com * * ######################################################################## * * This program is free software; you can distribute it and/or modify it * under the terms of the GNU General Public License (Version 2) as * published by the Free Software Foundation. * * This program is distributed in the hope it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * * ######################################################################## * * */ #include <linux/module.h> #include <linux/init.h> #include <linux/delay.h> #include <linux/ioport.h> #include <linux/kernel.h> #include <linux/timer.h> #include <linux/mm.h> #include <linux/proc_fs.h> #include <linux/types.h> #include <pcmcia/cs_types.h> #include <pcmcia/cs.h> #include <pcmcia/ss.h> #include <pcmcia/cistpl.h> #include <pcmcia/bus_ops.h> #include <asm/io.h> #include <asm/irq.h> #include <asm/system.h> #include <asm/au1000.h> #include <asm/au1000_pcmcia.h> #define PCMCIA_MAX_SOCK 0 #define PCMCIA_NUM_SOCKS (PCMCIA_MAX_SOCK + 1) #define PCMCIA_IRQ AU1000_GPIO_4 #if 0 #define DEBUG(x, args...) printk(__func__ ": " x, ##args) #else #define DEBUG(x,args...) #endif static int xxs1500_pcmcia_init(struct pcmcia_init *init) { return PCMCIA_NUM_SOCKS; } static int xxs1500_pcmcia_shutdown(void) { /* turn off power */ au_writel(au_readl(GPIO2_PINSTATE) | (1<<14)|(1<<30), GPIO2_OUTPUT); au_sync_delay(100); /* assert reset */ au_writel(au_readl(GPIO2_PINSTATE) | (1<<4)|(1<<20), GPIO2_OUTPUT); au_sync_delay(100); return 0; } static int xxs1500_pcmcia_socket_state(unsigned sock, struct pcmcia_state *state) { u32 inserted; u32 vs; unsigned long gpio, gpio2; if(sock > PCMCIA_MAX_SOCK) return -1; gpio = au_readl(SYS_PINSTATERD); gpio2 = au_readl(GPIO2_PINSTATE); vs = gpio2 & ((1<<8) | (1<<9)); inserted = (!(gpio & 0x1) && !(gpio & 0x2)); state->ready = 0; state->vs_Xv = 0; state->vs_3v = 0; state->detect = 0; if (inserted) { switch (vs) { case 0: case 1: case 2: state->vs_3v=1; break; case 3: /* 5V */ default: /* return without setting 'detect' */ printk(KERN_ERR "au1x00_cs: unsupported VS\n", vs); return; } state->detect = 1; } if (state->detect) { state->ready = 1; } state->bvd1= gpio2 & (1<<10); state->bvd2 = gpio2 & (1<<11); state->wrprot=0; return 1; } static int xxs1500_pcmcia_get_irq_info(struct pcmcia_irq_info *info) { if(info->sock > PCMCIA_MAX_SOCK) return -1; info->irq = PCMCIA_IRQ; return 0; } static int xxs1500_pcmcia_configure_socket(const struct pcmcia_configure *configure) { if(configure->sock > PCMCIA_MAX_SOCK) return -1; DEBUG("Vcc %dV Vpp %dV, reset %d\n", configure->vcc, configure->vpp, configure->reset); switch(configure->vcc){ case 33: /* Vcc 3.3V */ /* turn on power */ DEBUG("turn on power\n"); au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<14))|(1<<30), GPIO2_OUTPUT); au_sync_delay(100); break; case 50: /* Vcc 5V */ default: /* what's this ? */ printk(KERN_ERR "au1x00_cs: unsupported VCC\n"); case 0: /* Vcc 0 */ /* turn off power */ au_sync_delay(100); au_writel(au_readl(GPIO2_PINSTATE) | (1<<14)|(1<<30), GPIO2_OUTPUT); break; } if (!configure->reset) { DEBUG("deassert reset\n"); au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<4))|(1<<20), GPIO2_OUTPUT); au_sync_delay(100); au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<5))|(1<<21), GPIO2_OUTPUT); } else { DEBUG("assert reset\n"); au_writel(au_readl(GPIO2_PINSTATE) | (1<<4)|(1<<20), GPIO2_OUTPUT); } au_sync_delay(100); return 0; } struct pcmcia_low_level xxs1500_pcmcia_ops = { xxs1500_pcmcia_init, xxs1500_pcmcia_shutdown, xxs1500_pcmcia_socket_state, xxs1500_pcmcia_get_irq_info, xxs1500_pcmcia_configure_socket };