patch-2.4.22 linux-2.4.22/drivers/pcmcia/au1000_db1x00.c
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- Lines: 270
- Date:
2003-08-25 04:44:42.000000000 -0700
- Orig file:
linux-2.4.21/drivers/pcmcia/au1000_db1x00.c
- Orig date:
1969-12-31 16:00:00.000000000 -0800
diff -urN linux-2.4.21/drivers/pcmcia/au1000_db1x00.c linux-2.4.22/drivers/pcmcia/au1000_db1x00.c
@@ -0,0 +1,269 @@
+/*
+ *
+ * Alchemy Semi Db1x00 boards specific pcmcia routines.
+ *
+ * Copyright 2002 MontaVista Software Inc.
+ * Author: 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/config.h>
+#include <linux/delay.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/tqueue.h>
+#include <linux/timer.h>
+#include <linux/mm.h>
+#include <linux/proc_fs.h>
+#include <linux/version.h>
+#include <linux/types.h>
+
+#include <pcmcia/version.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/ss.h>
+#include <pcmcia/bulkmem.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/bus_ops.h>
+#include "cs_internal.h"
+
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+
+#include <asm/au1000.h>
+#include <asm/au1000_pcmcia.h>
+
+#include <asm/db1x00.h>
+
+static BCSR * const bcsr = (BCSR *)0xAE000000;
+
+static int db1x00_pcmcia_init(struct pcmcia_init *init)
+{
+ bcsr->pcmcia = 0; /* turn off power */
+ au_sync_delay(2);
+ return PCMCIA_NUM_SOCKS;
+}
+
+static int db1x00_pcmcia_shutdown(void)
+{
+ bcsr->pcmcia = 0; /* turn off power */
+ au_sync_delay(2);
+ return 0;
+}
+
+static int
+db1x00_pcmcia_socket_state(unsigned sock, struct pcmcia_state *state)
+{
+ u32 inserted;
+ unsigned char vs;
+
+ if(sock > PCMCIA_MAX_SOCK) return -1;
+
+ state->ready = 0;
+ state->vs_Xv = 0;
+ state->vs_3v = 0;
+ state->detect = 0;
+
+ if (sock == 0) {
+ vs = bcsr->status & 0x3;
+ inserted = !(bcsr->status & (1<<4));
+ }
+ else {
+ vs = (bcsr->status & 0xC)>>2;
+ inserted = !(bcsr->status & (1<<5));
+ }
+
+ DEBUG(KERN_DEBUG "db1x00 socket %d: inserted %d, vs %d\n",
+ sock, inserted, vs);
+
+ if (inserted) {
+ switch (vs) {
+ case 0:
+ case 2:
+ state->vs_3v=1;
+ break;
+ case 3: /* 5V */
+ break;
+ default:
+ /* return without setting 'detect' */
+ printk(KERN_ERR "db1x00 bad VS (%d)\n",
+ vs);
+ return -1;
+ }
+ state->detect = 1;
+ state->ready = 1;
+ }
+ else {
+ /* if the card was previously inserted and then ejected,
+ * we should turn off power to it
+ */
+ if ((sock == 0) && (bcsr->pcmcia & BCSR_PCMCIA_PC0RST)) {
+ bcsr->pcmcia &= ~(BCSR_PCMCIA_PC0RST |
+ BCSR_PCMCIA_PC0DRVEN |
+ BCSR_PCMCIA_PC0VPP |
+ BCSR_PCMCIA_PC0VCC);
+ }
+ else if ((sock == 1) && (bcsr->pcmcia & BCSR_PCMCIA_PC1RST)) {
+ bcsr->pcmcia &= ~(BCSR_PCMCIA_PC1RST |
+ BCSR_PCMCIA_PC1DRVEN |
+ BCSR_PCMCIA_PC1VPP |
+ BCSR_PCMCIA_PC1VCC);
+ }
+ }
+
+ state->bvd1=1;
+ state->bvd2=1;
+ state->wrprot=0;
+ return 1;
+}
+
+
+static int db1x00_pcmcia_get_irq_info(struct pcmcia_irq_info *info)
+{
+ if(info->sock > PCMCIA_MAX_SOCK) return -1;
+
+ if(info->sock == 0) {
+ info->irq = AU1000_GPIO_2;
+ }
+ else
+ info->irq = AU1000_GPIO_5;
+
+ return 0;
+}
+
+
+static int
+db1x00_pcmcia_configure_socket(const struct pcmcia_configure *configure)
+{
+ u16 pwr;
+ int sock = configure->sock;
+
+ if(sock > PCMCIA_MAX_SOCK) return -1;
+
+ DEBUG(KERN_DEBUG "socket %d Vcc %dV Vpp %dV, reset %d\n",
+ sock, configure->vcc, configure->vpp, configure->reset);
+
+ /* pcmcia reg was set to zero at init time. Be careful when
+ * initializing a socket not to wipe out the settings of the
+ * other socket.
+ */
+ pwr = bcsr->pcmcia;
+ pwr &= ~(0xf << sock*8); /* clear voltage settings */
+
+ switch(configure->vcc){
+ case 0: /* Vcc 0 */
+ pwr |= SET_VCC_VPP(0,0,sock);
+ break;
+ case 50: /* Vcc 5V */
+ switch(configure->vpp) {
+ case 0:
+ pwr |= SET_VCC_VPP(2,0,sock);
+ break;
+ case 50:
+ pwr |= SET_VCC_VPP(2,1,sock);
+ break;
+ case 12:
+ pwr |= SET_VCC_VPP(2,2,sock);
+ break;
+ case 33:
+ default:
+ pwr |= SET_VCC_VPP(0,0,sock);
+ printk("%s: bad Vcc/Vpp (%d:%d)\n",
+ __FUNCTION__,
+ configure->vcc,
+ configure->vpp);
+ break;
+ }
+ break;
+ case 33: /* Vcc 3.3V */
+ switch(configure->vpp) {
+ case 0:
+ pwr |= SET_VCC_VPP(1,0,sock);
+ break;
+ case 12:
+ pwr |= SET_VCC_VPP(1,2,sock);
+ break;
+ case 33:
+ pwr |= SET_VCC_VPP(1,1,sock);
+ break;
+ case 50:
+ default:
+ pwr |= SET_VCC_VPP(0,0,sock);
+ printk("%s: bad Vcc/Vpp (%d:%d)\n",
+ __FUNCTION__,
+ configure->vcc,
+ configure->vpp);
+ break;
+ }
+ break;
+ default: /* what's this ? */
+ pwr |= SET_VCC_VPP(0,0,sock);
+ printk(KERN_ERR "%s: bad Vcc %d\n",
+ __FUNCTION__, configure->vcc);
+ break;
+ }
+
+ bcsr->pcmcia = pwr;
+ au_sync_delay(300);
+
+ if (sock == 0) {
+ if (!configure->reset) {
+ pwr |= BCSR_PCMCIA_PC0DRVEN;
+ bcsr->pcmcia = pwr;
+ au_sync_delay(300);
+ pwr |= BCSR_PCMCIA_PC0RST;
+ bcsr->pcmcia = pwr;
+ au_sync_delay(100);
+ }
+ else {
+ pwr &= ~(BCSR_PCMCIA_PC0RST | BCSR_PCMCIA_PC0DRVEN);
+ bcsr->pcmcia = pwr;
+ au_sync_delay(100);
+ }
+ }
+ else {
+ if (!configure->reset) {
+ pwr |= BCSR_PCMCIA_PC1DRVEN;
+ bcsr->pcmcia = pwr;
+ au_sync_delay(300);
+ pwr |= BCSR_PCMCIA_PC1RST;
+ bcsr->pcmcia = pwr;
+ au_sync_delay(100);
+ }
+ else {
+ pwr &= ~(BCSR_PCMCIA_PC1RST | BCSR_PCMCIA_PC1DRVEN);
+ bcsr->pcmcia = pwr;
+ au_sync_delay(100);
+ }
+ }
+ return 0;
+}
+
+struct pcmcia_low_level db1x00_pcmcia_ops = {
+ db1x00_pcmcia_init,
+ db1x00_pcmcia_shutdown,
+ db1x00_pcmcia_socket_state,
+ db1x00_pcmcia_get_irq_info,
+ db1x00_pcmcia_configure_socket
+};
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