1/* 2 * 3 * MyCable board specific pcmcia routines. 4 * 5 * Copyright 2003 MontaVista Software Inc. 6 * Author: Pete Popov, MontaVista Software, Inc. 7 * ppopov@mvista.com or source@mvista.com 8 * 9 * ######################################################################## 10 * 11 * This program is free software; you can distribute it and/or modify it 12 * under the terms of the GNU General Public License (Version 2) as 13 * published by the Free Software Foundation. 14 * 15 * This program is distributed in the hope it will be useful, but WITHOUT 16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 17 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 18 * for more details. 19 * 20 * You should have received a copy of the GNU General Public License along 21 * with this program; if not, write to the Free Software Foundation, Inc., 22 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. 23 * 24 * ######################################################################## 25 * 26 * 27 */ 28#include <linux/module.h> 29#include <linux/init.h> 30#include <linux/delay.h> 31#include <linux/ioport.h> 32#include <linux/kernel.h> 33#include <linux/tqueue.h> 34#include <linux/timer.h> 35#include <linux/mm.h> 36#include <linux/proc_fs.h> 37#include <linux/types.h> 38 39#include <pcmcia/cs_types.h> 40#include <pcmcia/cs.h> 41#include <pcmcia/ss.h> 42#include <pcmcia/bulkmem.h> 43#include <pcmcia/cistpl.h> 44#include <pcmcia/bus_ops.h> 45#include "cs_internal.h" 46 47#include <asm/io.h> 48#include <asm/irq.h> 49#include <asm/system.h> 50 51#include <asm/au1000.h> 52#include <asm/au1000_pcmcia.h> 53#include <asm/xxs1500.h> 54 55#define DEBUG(x,args...) 56 57static int xxs1500_pcmcia_init(struct pcmcia_init *init) 58{ 59 return PCMCIA_NUM_SOCKS; 60} 61 62static int xxs1500_pcmcia_shutdown(void) 63{ 64 /* turn off power */ 65 au_writel(au_readl(GPIO2_PINSTATE) | (1<<14)|(1<<30), 66 GPIO2_OUTPUT); 67 au_sync_delay(100); 68 69 /* assert reset */ 70 au_writel(au_readl(GPIO2_PINSTATE) | (1<<4)|(1<<20), 71 GPIO2_OUTPUT); 72 au_sync_delay(100); 73 return 0; 74} 75 76 77static int 78xxs1500_pcmcia_socket_state(unsigned sock, struct pcmcia_state *state) 79{ 80 u32 inserted; u32 vs; 81 unsigned long gpio, gpio2; 82 83 if(sock > PCMCIA_MAX_SOCK) return -1; 84 85 gpio = au_readl(SYS_PINSTATERD); 86 gpio2 = au_readl(GPIO2_PINSTATE); 87 88 vs = gpio2 & ((1<<8) | (1<<9)); 89 inserted = (!(gpio & 0x1) && !(gpio & 0x2)); 90 91 state->ready = 0; 92 state->vs_Xv = 0; 93 state->vs_3v = 0; 94 state->detect = 0; 95 96 if (inserted) { 97 switch (vs) { 98 case 0: 99 case 1: 100 case 2: 101 state->vs_3v=1; 102 break; 103 case 3: /* 5V */ 104 default: 105 /* return without setting 'detect' */ 106 printk(KERN_ERR "au1x00_cs: unsupported VS\n", 107 vs); 108 return; 109 } 110 state->detect = 1; 111 } 112 113 if (state->detect) { 114 state->ready = 1; 115 } 116 117 state->bvd1= gpio2 & (1<<10); 118 state->bvd2 = gpio2 & (1<<11); 119 state->wrprot=0; 120 return 1; 121} 122 123 124static int xxs1500_pcmcia_get_irq_info(struct pcmcia_irq_info *info) 125{ 126 127 if(info->sock > PCMCIA_MAX_SOCK) return -1; 128 info->irq = PCMCIA_IRQ; 129 return 0; 130} 131 132 133static int 134xxs1500_pcmcia_configure_socket(const struct pcmcia_configure *configure) 135{ 136 137 if(configure->sock > PCMCIA_MAX_SOCK) return -1; 138 139 DEBUG("Vcc %dV Vpp %dV, reset %d\n", 140 configure->vcc, configure->vpp, configure->reset); 141 142 switch(configure->vcc){ 143 case 33: /* Vcc 3.3V */ 144 /* turn on power */ 145 DEBUG("turn on power\n"); 146 au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<14))|(1<<30), 147 GPIO2_OUTPUT); 148 au_sync_delay(100); 149 break; 150 case 50: /* Vcc 5V */ 151 default: /* what's this ? */ 152 printk(KERN_ERR "au1x00_cs: unsupported VCC\n"); 153 case 0: /* Vcc 0 */ 154 /* turn off power */ 155 au_sync_delay(100); 156 au_writel(au_readl(GPIO2_PINSTATE) | (1<<14)|(1<<30), 157 GPIO2_OUTPUT); 158 break; 159 } 160 161 if (!configure->reset) { 162 DEBUG("deassert reset\n"); 163 au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<4))|(1<<20), 164 GPIO2_OUTPUT); 165 au_sync_delay(100); 166 au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<5))|(1<<21), 167 GPIO2_OUTPUT); 168 } 169 else { 170 DEBUG("assert reset\n"); 171 au_writel(au_readl(GPIO2_PINSTATE) | (1<<4)|(1<<20), 172 GPIO2_OUTPUT); 173 } 174 au_sync_delay(100); 175 return 0; 176} 177 178struct pcmcia_low_level xxs1500_pcmcia_ops = { 179 xxs1500_pcmcia_init, 180 xxs1500_pcmcia_shutdown, 181 xxs1500_pcmcia_socket_state, 182 xxs1500_pcmcia_get_irq_info, 183 xxs1500_pcmcia_configure_socket 184}; 185