3 * Alchemy Semi Db1x00 boards specific pcmcia routines.
5 * Copyright 2002 MontaVista Software Inc.
6 * Author: MontaVista Software, Inc.
7 * ppopov@mvista.com or source@mvista.com
9 * Copyright 2004 Pete Popov, updated the driver to 2.6.
10 * Followed the sa11xx API and largely copied many of the hardware
11 * independent functions.
13 * ########################################################################
15 * This program is free software; you can distribute it and/or modify it
16 * under the terms of the GNU General Public License (Version 2) as
17 * published by the Free Software Foundation.
19 * This program is distributed in the hope it will be useful, but WITHOUT
20 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
21 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
24 * You should have received a copy of the GNU General Public License along
25 * with this program; if not, write to the Free Software Foundation, Inc.,
26 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
28 * ########################################################################
33 #include <linux/module.h>
34 #include <linux/kernel.h>
35 #include <linux/errno.h>
36 #include <linux/interrupt.h>
37 #include <linux/device.h>
38 #include <linux/init.h>
41 #include <asm/signal.h>
42 #include <asm/mach-au1x00/au1000.h>
43 #include <asm/mach-db1x00/db1x00.h>
45 #include "au1000_generic.h"
48 #define debug(x,args...) printk(KERN_DEBUG "%s: " x, __func__ , ##args)
50 #define debug(x,args...)
53 static BCSR * const bcsr = (BCSR *)BCSR_KSEG1_ADDR;
55 struct au1000_pcmcia_socket au1000_pcmcia_socket[PCMCIA_NUM_SOCKS];
56 extern int au1x00_pcmcia_socket_probe(struct device *, struct pcmcia_low_level *, int, int);
58 static int db1x00_pcmcia_hw_init(struct au1000_pcmcia_socket *skt)
60 #ifdef CONFIG_MIPS_DB1550
61 skt->irq = skt->nr ? AU1000_GPIO_5 : AU1000_GPIO_3;
63 skt->irq = skt->nr ? AU1000_GPIO_5 : AU1000_GPIO_2;
68 static void db1x00_pcmcia_shutdown(struct au1000_pcmcia_socket *skt)
70 bcsr->pcmcia = 0; /* turn off power */
75 db1x00_pcmcia_socket_state(struct au1000_pcmcia_socket *skt, struct pcmcia_state *state)
87 vs = bcsr->status & 0x3;
88 inserted = !(bcsr->status & (1<<4));
91 vs = (bcsr->status & 0xC)>>2;
92 inserted = !(bcsr->status & (1<<5));
94 default:/* should never happen */
99 debug("db1x00 socket %d: inserted %d, vs %d pcmcia %x\n",
100 skt->nr, inserted, vs, bcsr->pcmcia);
111 /* return without setting 'detect' */
112 printk(KERN_ERR "db1x00 bad VS (%d)\n",
119 /* if the card was previously inserted and then ejected,
120 * we should turn off power to it
122 if ((skt->nr == 0) && (bcsr->pcmcia & BCSR_PCMCIA_PC0RST)) {
123 bcsr->pcmcia &= ~(BCSR_PCMCIA_PC0RST |
124 BCSR_PCMCIA_PC0DRVEN |
129 else if ((skt->nr == 1) && bcsr->pcmcia & BCSR_PCMCIA_PC1RST) {
130 bcsr->pcmcia &= ~(BCSR_PCMCIA_PC1RST |
131 BCSR_PCMCIA_PC1DRVEN |
144 db1x00_pcmcia_configure_socket(struct au1000_pcmcia_socket *skt, struct socket_state_t *state)
149 debug("config_skt %d Vcc %dV Vpp %dV, reset %d\n",
150 sock, state->Vcc, state->Vpp,
151 state->flags & SS_RESET);
153 /* pcmcia reg was set to zero at init time. Be careful when
154 * initializing a socket not to wipe out the settings of the
158 pwr &= ~(0xf << sock*8); /* clear voltage settings */
163 pwr |= SET_VCC_VPP(0,0,sock);
165 case 50: /* Vcc 5V */
168 pwr |= SET_VCC_VPP(2,0,sock);
171 pwr |= SET_VCC_VPP(2,1,sock);
174 pwr |= SET_VCC_VPP(2,2,sock);
178 pwr |= SET_VCC_VPP(0,0,sock);
179 printk("%s: bad Vcc/Vpp (%d:%d)\n",
186 case 33: /* Vcc 3.3V */
189 pwr |= SET_VCC_VPP(1,0,sock);
192 pwr |= SET_VCC_VPP(1,2,sock);
195 pwr |= SET_VCC_VPP(1,1,sock);
199 pwr |= SET_VCC_VPP(0,0,sock);
200 printk("%s: bad Vcc/Vpp (%d:%d)\n",
207 default: /* what's this ? */
208 pwr |= SET_VCC_VPP(0,0,sock);
209 printk(KERN_ERR "%s: bad Vcc %d\n",
210 __FUNCTION__, state->Vcc);
218 if (!(state->flags & SS_RESET)) {
219 pwr |= BCSR_PCMCIA_PC0DRVEN;
222 pwr |= BCSR_PCMCIA_PC0RST;
227 pwr &= ~(BCSR_PCMCIA_PC0RST | BCSR_PCMCIA_PC0DRVEN);
233 if (!(state->flags & SS_RESET)) {
234 pwr |= BCSR_PCMCIA_PC1DRVEN;
237 pwr |= BCSR_PCMCIA_PC1RST;
242 pwr &= ~(BCSR_PCMCIA_PC1RST | BCSR_PCMCIA_PC1DRVEN);
251 * Enable card status IRQs on (re-)initialisation. This can
252 * be called at initialisation, power management event, or
255 void db1x00_socket_init(struct au1000_pcmcia_socket *skt)
257 /* nothing to do for now */
261 * Disable card status IRQs and PCMCIA bus on suspend.
263 void db1x00_socket_suspend(struct au1000_pcmcia_socket *skt)
265 /* nothing to do for now */
268 struct pcmcia_low_level db1x00_pcmcia_ops = {
269 .owner = THIS_MODULE,
271 .hw_init = db1x00_pcmcia_hw_init,
272 .hw_shutdown = db1x00_pcmcia_shutdown,
274 .socket_state = db1x00_pcmcia_socket_state,
275 .configure_socket = db1x00_pcmcia_configure_socket,
277 .socket_init = db1x00_socket_init,
278 .socket_suspend = db1x00_socket_suspend
281 int __init au1x_board_init(struct device *dev)
284 bcsr->pcmcia = 0; /* turn off power, if it's not already off */
286 ret = au1x00_pcmcia_socket_probe(dev, &db1x00_pcmcia_ops, 0, 2);