--- /dev/null
+/*
+ *
+ * Alchemy Semi Db1x00 boards specific pcmcia routines.
+ *
+ * Copyright 2002 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc.
+ * ppopov@mvista.com or source@mvista.com
+ *
+ * Copyright 2004 Pete Popov, updated the driver to 2.6.
+ * Followed the sa11xx API and largely copied many of the hardware
+ * independent functions.
+ *
+ * ########################################################################
+ *
+ * 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/kernel.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/device.h>
+#include <linux/init.h>
+
+#include <asm/irq.h>
+#include <asm/signal.h>
+#include <asm/mach-au1x00/au1000.h>
+#include <asm/mach-db1x00/db1x00.h>
+
+#include "au1000_generic.h"
+
+#if 0
+#define debug(x,args...) printk(KERN_DEBUG "%s: " x, __func__ , ##args)
+#else
+#define debug(x,args...)
+#endif
+
+static BCSR * const bcsr = (BCSR *)BCSR_KSEG1_ADDR;
+
+struct au1000_pcmcia_socket au1000_pcmcia_socket[PCMCIA_NUM_SOCKS];
+extern int au1x00_pcmcia_socket_probe(struct device *, struct pcmcia_low_level *, int, int);
+
+static int db1x00_pcmcia_hw_init(struct au1000_pcmcia_socket *skt)
+{
+#ifdef CONFIG_MIPS_DB1550
+ skt->irq = skt->nr ? AU1000_GPIO_5 : AU1000_GPIO_3;
+#else
+ skt->irq = skt->nr ? AU1000_GPIO_5 : AU1000_GPIO_2;
+#endif
+ return 0;
+}
+
+static void db1x00_pcmcia_shutdown(struct au1000_pcmcia_socket *skt)
+{
+ bcsr->pcmcia = 0; /* turn off power */
+ au_sync_delay(2);
+}
+
+static void
+db1x00_pcmcia_socket_state(struct au1000_pcmcia_socket *skt, struct pcmcia_state *state)
+{
+ u32 inserted;
+ unsigned char vs;
+
+ state->ready = 0;
+ state->vs_Xv = 0;
+ state->vs_3v = 0;
+ state->detect = 0;
+
+ switch (skt->nr) {
+ case 0:
+ vs = bcsr->status & 0x3;
+ inserted = !(bcsr->status & (1<<4));
+ break;
+ case 1:
+ vs = (bcsr->status & 0xC)>>2;
+ inserted = !(bcsr->status & (1<<5));
+ break;
+ default:/* should never happen */
+ return;
+ }
+
+ if (inserted)
+ debug("db1x00 socket %d: inserted %d, vs %d pcmcia %x\n",
+ skt->nr, inserted, vs, bcsr->pcmcia);
+
+ 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);
+ }
+ state->detect = 1;
+ state->ready = 1;
+ }
+ else {
+ /* if the card was previously inserted and then ejected,
+ * we should turn off power to it
+ */
+ if ((skt->nr == 0) && (bcsr->pcmcia & BCSR_PCMCIA_PC0RST)) {
+ bcsr->pcmcia &= ~(BCSR_PCMCIA_PC0RST |
+ BCSR_PCMCIA_PC0DRVEN |
+ BCSR_PCMCIA_PC0VPP |
+ BCSR_PCMCIA_PC0VCC);
+ au_sync_delay(10);
+ }
+ else if ((skt->nr == 1) && bcsr->pcmcia & BCSR_PCMCIA_PC1RST) {
+ bcsr->pcmcia &= ~(BCSR_PCMCIA_PC1RST |
+ BCSR_PCMCIA_PC1DRVEN |
+ BCSR_PCMCIA_PC1VPP |
+ BCSR_PCMCIA_PC1VCC);
+ au_sync_delay(10);
+ }
+ }
+
+ state->bvd1=1;
+ state->bvd2=1;
+ state->wrprot=0;
+}
+
+static int
+db1x00_pcmcia_configure_socket(struct au1000_pcmcia_socket *skt, struct socket_state_t *state)
+{
+ u16 pwr;
+ int sock = skt->nr;
+
+ debug("config_skt %d Vcc %dV Vpp %dV, reset %d\n",
+ sock, state->Vcc, state->Vpp,
+ state->flags & SS_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 */
+
+ state->Vpp = 0;
+ switch(state->Vcc){
+ case 0: /* Vcc 0 */
+ pwr |= SET_VCC_VPP(0,0,sock);
+ break;
+ case 50: /* Vcc 5V */
+ switch(state->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__,
+ state->Vcc,
+ state->Vpp);
+ break;
+ }
+ break;
+ case 33: /* Vcc 3.3V */
+ switch(state->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__,
+ state->Vcc,
+ state->Vpp);
+ break;
+ }
+ break;
+ default: /* what's this ? */
+ pwr |= SET_VCC_VPP(0,0,sock);
+ printk(KERN_ERR "%s: bad Vcc %d\n",
+ __FUNCTION__, state->Vcc);
+ break;
+ }
+
+ bcsr->pcmcia = pwr;
+ au_sync_delay(300);
+
+ if (sock == 0) {
+ if (!(state->flags & SS_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 (!(state->flags & SS_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;
+}
+
+/*
+ * Enable card status IRQs on (re-)initialisation. This can
+ * be called at initialisation, power management event, or
+ * pcmcia event.
+ */
+void db1x00_socket_init(struct au1000_pcmcia_socket *skt)
+{
+ /* nothing to do for now */
+}
+
+/*
+ * Disable card status IRQs and PCMCIA bus on suspend.
+ */
+void db1x00_socket_suspend(struct au1000_pcmcia_socket *skt)
+{
+ /* nothing to do for now */
+}
+
+struct pcmcia_low_level db1x00_pcmcia_ops = {
+ .owner = THIS_MODULE,
+
+ .hw_init = db1x00_pcmcia_hw_init,
+ .hw_shutdown = db1x00_pcmcia_shutdown,
+
+ .socket_state = db1x00_pcmcia_socket_state,
+ .configure_socket = db1x00_pcmcia_configure_socket,
+
+ .socket_init = db1x00_socket_init,
+ .socket_suspend = db1x00_socket_suspend
+};
+
+int __init au1x_board_init(struct device *dev)
+{
+ int ret = -ENODEV;
+ bcsr->pcmcia = 0; /* turn off power, if it's not already off */
+ au_sync_delay(2);
+ ret = au1x00_pcmcia_socket_probe(dev, &db1x00_pcmcia_ops, 0, 2);
+ return ret;
+}
git://git.onelab.eu / linux-2.6.git / blobdiff