2 * Sonics Silicon Backplane
3 * PCMCIA-Hostbus related functions
5 * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
6 * Copyright 2007-2008 Michael Buesch <mb@bu3sch.de>
8 * Licensed under the GNU/GPL. See COPYING for details.
11 #include <linux/ssb/ssb.h>
12 #include <linux/delay.h>
14 #include <linux/etherdevice.h>
16 #include <pcmcia/cs_types.h>
17 #include <pcmcia/cs.h>
18 #include <pcmcia/cistpl.h>
19 #include <pcmcia/ciscode.h>
20 #include <pcmcia/ds.h>
21 #include <pcmcia/cisreg.h>
23 #include "ssb_private.h"
26 /* Define the following to 1 to enable a printk on each coreswitch. */
27 #define SSB_VERBOSE_PCMCIACORESWITCH_DEBUG 0
30 /* PCMCIA configuration registers */
31 #define SSB_PCMCIA_ADDRESS0 0x2E
32 #define SSB_PCMCIA_ADDRESS1 0x30
33 #define SSB_PCMCIA_ADDRESS2 0x32
34 #define SSB_PCMCIA_MEMSEG 0x34
35 #define SSB_PCMCIA_SPROMCTL 0x36
36 #define SSB_PCMCIA_SPROMCTL_IDLE 0
37 #define SSB_PCMCIA_SPROMCTL_WRITE 1
38 #define SSB_PCMCIA_SPROMCTL_READ 2
39 #define SSB_PCMCIA_SPROMCTL_WRITEEN 4
40 #define SSB_PCMCIA_SPROMCTL_WRITEDIS 7
41 #define SSB_PCMCIA_SPROMCTL_DONE 8
42 #define SSB_PCMCIA_SPROM_DATALO 0x38
43 #define SSB_PCMCIA_SPROM_DATAHI 0x3A
44 #define SSB_PCMCIA_SPROM_ADDRLO 0x3C
45 #define SSB_PCMCIA_SPROM_ADDRHI 0x3E
47 /* Hardware invariants CIS tuples */
48 #define SSB_PCMCIA_CIS 0x80
49 #define SSB_PCMCIA_CIS_ID 0x01
50 #define SSB_PCMCIA_CIS_BOARDREV 0x02
51 #define SSB_PCMCIA_CIS_PA 0x03
52 #define SSB_PCMCIA_CIS_PA_PA0B0_LO 0
53 #define SSB_PCMCIA_CIS_PA_PA0B0_HI 1
54 #define SSB_PCMCIA_CIS_PA_PA0B1_LO 2
55 #define SSB_PCMCIA_CIS_PA_PA0B1_HI 3
56 #define SSB_PCMCIA_CIS_PA_PA0B2_LO 4
57 #define SSB_PCMCIA_CIS_PA_PA0B2_HI 5
58 #define SSB_PCMCIA_CIS_PA_ITSSI 6
59 #define SSB_PCMCIA_CIS_PA_MAXPOW 7
60 #define SSB_PCMCIA_CIS_OEMNAME 0x04
61 #define SSB_PCMCIA_CIS_CCODE 0x05
62 #define SSB_PCMCIA_CIS_ANTENNA 0x06
63 #define SSB_PCMCIA_CIS_ANTGAIN 0x07
64 #define SSB_PCMCIA_CIS_BFLAGS 0x08
65 #define SSB_PCMCIA_CIS_LEDS 0x09
67 /* PCMCIA SPROM size. */
68 #define SSB_PCMCIA_SPROM_SIZE 256
69 #define SSB_PCMCIA_SPROM_SIZE_BYTES (SSB_PCMCIA_SPROM_SIZE * sizeof(u16))
72 /* Write to a PCMCIA configuration register. */
73 static int ssb_pcmcia_cfg_write(struct ssb_bus *bus, u8 offset, u8 value)
78 memset(®, 0, sizeof(reg));
80 reg.Action = CS_WRITE;
82 res = pcmcia_access_configuration_register(bus->host_pcmcia, ®);
83 if (unlikely(res != 0))
89 /* Read from a PCMCIA configuration register. */
90 static int ssb_pcmcia_cfg_read(struct ssb_bus *bus, u8 offset, u8 *value)
95 memset(®, 0, sizeof(reg));
98 res = pcmcia_access_configuration_register(bus->host_pcmcia, ®);
99 if (unlikely(res != 0))
106 int ssb_pcmcia_switch_coreidx(struct ssb_bus *bus,
116 addr = (coreidx * SSB_CORE_SIZE) + SSB_ENUM_BASE;
118 err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_ADDRESS0,
119 (addr & 0x0000F000) >> 12);
122 err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_ADDRESS1,
123 (addr & 0x00FF0000) >> 16);
126 err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_ADDRESS2,
127 (addr & 0xFF000000) >> 24);
133 err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_ADDRESS0, &val);
136 read_addr |= ((u32)(val & 0x0F)) << 12;
137 err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_ADDRESS1, &val);
140 read_addr |= ((u32)val) << 16;
141 err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_ADDRESS2, &val);
144 read_addr |= ((u32)val) << 24;
146 cur_core = (read_addr - SSB_ENUM_BASE) / SSB_CORE_SIZE;
147 if (cur_core == coreidx)
151 if (attempts++ > SSB_BAR0_MAX_RETRIES)
158 ssb_printk(KERN_ERR PFX "Failed to switch to core %u\n", coreidx);
162 int ssb_pcmcia_switch_core(struct ssb_bus *bus,
163 struct ssb_device *dev)
167 #if SSB_VERBOSE_PCMCIACORESWITCH_DEBUG
168 ssb_printk(KERN_INFO PFX
169 "Switching to %s core, index %d\n",
170 ssb_core_name(dev->id.coreid),
174 err = ssb_pcmcia_switch_coreidx(bus, dev->core_index);
176 bus->mapped_device = dev;
181 int ssb_pcmcia_switch_segment(struct ssb_bus *bus, u8 seg)
187 SSB_WARN_ON((seg != 0) && (seg != 1));
189 err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_MEMSEG, seg);
192 err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_MEMSEG, &val);
199 if (unlikely(attempts++ > SSB_BAR0_MAX_RETRIES))
203 bus->mapped_pcmcia_seg = seg;
207 ssb_printk(KERN_ERR PFX "Failed to switch pcmcia segment\n");
211 static int select_core_and_segment(struct ssb_device *dev,
214 struct ssb_bus *bus = dev->bus;
218 if (*offset >= 0x800) {
224 if (unlikely(dev != bus->mapped_device)) {
225 err = ssb_pcmcia_switch_core(bus, dev);
229 if (unlikely(need_segment != bus->mapped_pcmcia_seg)) {
230 err = ssb_pcmcia_switch_segment(bus, need_segment);
238 static u8 ssb_pcmcia_read8(struct ssb_device *dev, u16 offset)
240 struct ssb_bus *bus = dev->bus;
245 spin_lock_irqsave(&bus->bar_lock, flags);
246 err = select_core_and_segment(dev, &offset);
248 value = readb(bus->mmio + offset);
249 spin_unlock_irqrestore(&bus->bar_lock, flags);
254 static u16 ssb_pcmcia_read16(struct ssb_device *dev, u16 offset)
256 struct ssb_bus *bus = dev->bus;
261 spin_lock_irqsave(&bus->bar_lock, flags);
262 err = select_core_and_segment(dev, &offset);
264 value = readw(bus->mmio + offset);
265 spin_unlock_irqrestore(&bus->bar_lock, flags);
270 static u32 ssb_pcmcia_read32(struct ssb_device *dev, u16 offset)
272 struct ssb_bus *bus = dev->bus;
275 u32 lo = 0xFFFFFFFF, hi = 0xFFFFFFFF;
277 spin_lock_irqsave(&bus->bar_lock, flags);
278 err = select_core_and_segment(dev, &offset);
280 lo = readw(bus->mmio + offset);
281 hi = readw(bus->mmio + offset + 2);
283 spin_unlock_irqrestore(&bus->bar_lock, flags);
285 return (lo | (hi << 16));
288 #ifdef CONFIG_SSB_BLOCKIO
289 static void ssb_pcmcia_block_read(struct ssb_device *dev, void *buffer,
290 size_t count, u16 offset, u8 reg_width)
292 struct ssb_bus *bus = dev->bus;
294 void __iomem *addr = bus->mmio + offset;
297 spin_lock_irqsave(&bus->bar_lock, flags);
298 err = select_core_and_segment(dev, &offset);
300 memset(buffer, 0xFF, count);
308 *buf = __raw_readb(addr);
315 __le16 *buf = buffer;
317 SSB_WARN_ON(count & 1);
319 *buf = (__force __le16)__raw_readw(addr);
326 __le16 *buf = buffer;
328 SSB_WARN_ON(count & 3);
330 *buf = (__force __le16)__raw_readw(addr);
332 *buf = (__force __le16)__raw_readw(addr + 2);
342 spin_unlock_irqrestore(&bus->bar_lock, flags);
344 #endif /* CONFIG_SSB_BLOCKIO */
346 static void ssb_pcmcia_write8(struct ssb_device *dev, u16 offset, u8 value)
348 struct ssb_bus *bus = dev->bus;
352 spin_lock_irqsave(&bus->bar_lock, flags);
353 err = select_core_and_segment(dev, &offset);
355 writeb(value, bus->mmio + offset);
357 spin_unlock_irqrestore(&bus->bar_lock, flags);
360 static void ssb_pcmcia_write16(struct ssb_device *dev, u16 offset, u16 value)
362 struct ssb_bus *bus = dev->bus;
366 spin_lock_irqsave(&bus->bar_lock, flags);
367 err = select_core_and_segment(dev, &offset);
369 writew(value, bus->mmio + offset);
371 spin_unlock_irqrestore(&bus->bar_lock, flags);
374 static void ssb_pcmcia_write32(struct ssb_device *dev, u16 offset, u32 value)
376 struct ssb_bus *bus = dev->bus;
380 spin_lock_irqsave(&bus->bar_lock, flags);
381 err = select_core_and_segment(dev, &offset);
383 writew((value & 0x0000FFFF), bus->mmio + offset);
384 writew(((value & 0xFFFF0000) >> 16), bus->mmio + offset + 2);
387 spin_unlock_irqrestore(&bus->bar_lock, flags);
390 #ifdef CONFIG_SSB_BLOCKIO
391 static void ssb_pcmcia_block_write(struct ssb_device *dev, const void *buffer,
392 size_t count, u16 offset, u8 reg_width)
394 struct ssb_bus *bus = dev->bus;
396 void __iomem *addr = bus->mmio + offset;
399 spin_lock_irqsave(&bus->bar_lock, flags);
400 err = select_core_and_segment(dev, &offset);
405 const u8 *buf = buffer;
408 __raw_writeb(*buf, addr);
415 const __le16 *buf = buffer;
417 SSB_WARN_ON(count & 1);
419 __raw_writew((__force u16)(*buf), addr);
426 const __le16 *buf = buffer;
428 SSB_WARN_ON(count & 3);
430 __raw_writew((__force u16)(*buf), addr);
432 __raw_writew((__force u16)(*buf), addr + 2);
443 spin_unlock_irqrestore(&bus->bar_lock, flags);
445 #endif /* CONFIG_SSB_BLOCKIO */
447 /* Not "static", as it's used in main.c */
448 const struct ssb_bus_ops ssb_pcmcia_ops = {
449 .read8 = ssb_pcmcia_read8,
450 .read16 = ssb_pcmcia_read16,
451 .read32 = ssb_pcmcia_read32,
452 .write8 = ssb_pcmcia_write8,
453 .write16 = ssb_pcmcia_write16,
454 .write32 = ssb_pcmcia_write32,
455 #ifdef CONFIG_SSB_BLOCKIO
456 .block_read = ssb_pcmcia_block_read,
457 .block_write = ssb_pcmcia_block_write,
461 static int ssb_pcmcia_sprom_command(struct ssb_bus *bus, u8 command)
467 err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROMCTL, command);
470 for (i = 0; i < 1000; i++) {
471 err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_SPROMCTL, &value);
474 if (value & SSB_PCMCIA_SPROMCTL_DONE)
482 /* offset is the 16bit word offset */
483 static int ssb_pcmcia_sprom_read(struct ssb_bus *bus, u16 offset, u16 *value)
488 offset *= 2; /* Make byte offset */
490 err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_ADDRLO,
494 err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_ADDRHI,
495 (offset & 0xFF00) >> 8);
498 err = ssb_pcmcia_sprom_command(bus, SSB_PCMCIA_SPROMCTL_READ);
501 err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_SPROM_DATALO, &lo);
504 err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_SPROM_DATAHI, &hi);
507 *value = (lo | (((u16)hi) << 8));
512 /* offset is the 16bit word offset */
513 static int ssb_pcmcia_sprom_write(struct ssb_bus *bus, u16 offset, u16 value)
517 offset *= 2; /* Make byte offset */
519 err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_ADDRLO,
523 err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_ADDRHI,
524 (offset & 0xFF00) >> 8);
527 err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_DATALO,
531 err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_DATAHI,
532 (value & 0xFF00) >> 8);
535 err = ssb_pcmcia_sprom_command(bus, SSB_PCMCIA_SPROMCTL_WRITE);
543 /* Read the SPROM image. bufsize is in 16bit words. */
544 static int ssb_pcmcia_sprom_read_all(struct ssb_bus *bus, u16 *sprom)
548 for (i = 0; i < SSB_PCMCIA_SPROM_SIZE; i++) {
549 err = ssb_pcmcia_sprom_read(bus, i, &sprom[i]);
557 /* Write the SPROM image. size is in 16bit words. */
558 static int ssb_pcmcia_sprom_write_all(struct ssb_bus *bus, const u16 *sprom)
562 size_t size = SSB_PCMCIA_SPROM_SIZE;
564 ssb_printk(KERN_NOTICE PFX
565 "Writing SPROM. Do NOT turn off the power! "
566 "Please stand by...\n");
567 err = ssb_pcmcia_sprom_command(bus, SSB_PCMCIA_SPROMCTL_WRITEEN);
569 ssb_printk(KERN_NOTICE PFX
570 "Could not enable SPROM write access.\n");
573 ssb_printk(KERN_NOTICE PFX "[ 0%%");
575 for (i = 0; i < size; i++) {
578 else if (i == size / 2)
580 else if (i == (size * 3) / 4)
584 err = ssb_pcmcia_sprom_write(bus, i, sprom[i]);
586 ssb_printk(KERN_NOTICE PFX
587 "Failed to write to SPROM.\n");
592 err = ssb_pcmcia_sprom_command(bus, SSB_PCMCIA_SPROMCTL_WRITEDIS);
594 ssb_printk(KERN_NOTICE PFX
595 "Could not disable SPROM write access.\n");
600 ssb_printk("100%% ]\n");
601 ssb_printk(KERN_NOTICE PFX "SPROM written.\n");
604 return failed ? -EBUSY : 0;
607 static int ssb_pcmcia_sprom_check_crc(const u16 *sprom, size_t size)
613 #define GOTO_ERROR_ON(condition, description) do { \
614 if (unlikely(condition)) { \
615 error_description = description; \
620 int ssb_pcmcia_get_invariants(struct ssb_bus *bus,
621 struct ssb_init_invariants *iv)
625 unsigned char buf[32];
626 struct ssb_sprom *sprom = &iv->sprom;
627 struct ssb_boardinfo *bi = &iv->boardinfo;
628 const char *error_description;
630 memset(sprom, 0xFF, sizeof(*sprom));
632 sprom->boardflags_lo = 0;
633 sprom->boardflags_hi = 0;
635 /* First fetch the MAC address. */
636 memset(&tuple, 0, sizeof(tuple));
637 tuple.DesiredTuple = CISTPL_FUNCE;
638 tuple.TupleData = buf;
639 tuple.TupleDataMax = sizeof(buf);
640 res = pcmcia_get_first_tuple(bus->host_pcmcia, &tuple);
641 GOTO_ERROR_ON(res != 0, "MAC first tpl");
642 res = pcmcia_get_tuple_data(bus->host_pcmcia, &tuple);
643 GOTO_ERROR_ON(res != 0, "MAC first tpl data");
645 GOTO_ERROR_ON(tuple.TupleDataLen < 1, "MAC tpl < 1");
646 if (tuple.TupleData[0] == CISTPL_FUNCE_LAN_NODE_ID)
648 res = pcmcia_get_next_tuple(bus->host_pcmcia, &tuple);
649 GOTO_ERROR_ON(res != 0, "MAC next tpl");
650 res = pcmcia_get_tuple_data(bus->host_pcmcia, &tuple);
651 GOTO_ERROR_ON(res != 0, "MAC next tpl data");
653 GOTO_ERROR_ON(tuple.TupleDataLen != ETH_ALEN + 2, "MAC tpl size");
654 memcpy(sprom->il0mac, &tuple.TupleData[2], ETH_ALEN);
656 /* Fetch the vendor specific tuples. */
657 memset(&tuple, 0, sizeof(tuple));
658 tuple.DesiredTuple = SSB_PCMCIA_CIS;
659 tuple.TupleData = buf;
660 tuple.TupleDataMax = sizeof(buf);
661 res = pcmcia_get_first_tuple(bus->host_pcmcia, &tuple);
662 GOTO_ERROR_ON(res != 0, "VEN first tpl");
663 res = pcmcia_get_tuple_data(bus->host_pcmcia, &tuple);
664 GOTO_ERROR_ON(res != 0, "VEN first tpl data");
666 GOTO_ERROR_ON(tuple.TupleDataLen < 1, "VEN tpl < 1");
667 switch (tuple.TupleData[0]) {
668 case SSB_PCMCIA_CIS_ID:
669 GOTO_ERROR_ON((tuple.TupleDataLen != 5) &&
670 (tuple.TupleDataLen != 7),
672 bi->vendor = tuple.TupleData[1] |
673 ((u16)tuple.TupleData[2] << 8);
675 case SSB_PCMCIA_CIS_BOARDREV:
676 GOTO_ERROR_ON(tuple.TupleDataLen != 2,
677 "boardrev tpl size");
678 sprom->board_rev = tuple.TupleData[1];
680 case SSB_PCMCIA_CIS_PA:
681 GOTO_ERROR_ON((tuple.TupleDataLen != 9) &&
682 (tuple.TupleDataLen != 10),
684 sprom->pa0b0 = tuple.TupleData[1] |
685 ((u16)tuple.TupleData[2] << 8);
686 sprom->pa0b1 = tuple.TupleData[3] |
687 ((u16)tuple.TupleData[4] << 8);
688 sprom->pa0b2 = tuple.TupleData[5] |
689 ((u16)tuple.TupleData[6] << 8);
690 sprom->itssi_a = tuple.TupleData[7];
691 sprom->itssi_bg = tuple.TupleData[7];
692 sprom->maxpwr_a = tuple.TupleData[8];
693 sprom->maxpwr_bg = tuple.TupleData[8];
695 case SSB_PCMCIA_CIS_OEMNAME:
696 /* We ignore this. */
698 case SSB_PCMCIA_CIS_CCODE:
699 GOTO_ERROR_ON(tuple.TupleDataLen != 2,
701 sprom->country_code = tuple.TupleData[1];
703 case SSB_PCMCIA_CIS_ANTENNA:
704 GOTO_ERROR_ON(tuple.TupleDataLen != 2,
706 sprom->ant_available_a = tuple.TupleData[1];
707 sprom->ant_available_bg = tuple.TupleData[1];
709 case SSB_PCMCIA_CIS_ANTGAIN:
710 GOTO_ERROR_ON(tuple.TupleDataLen != 2,
712 sprom->antenna_gain.ghz24.a0 = tuple.TupleData[1];
713 sprom->antenna_gain.ghz24.a1 = tuple.TupleData[1];
714 sprom->antenna_gain.ghz24.a2 = tuple.TupleData[1];
715 sprom->antenna_gain.ghz24.a3 = tuple.TupleData[1];
716 sprom->antenna_gain.ghz5.a0 = tuple.TupleData[1];
717 sprom->antenna_gain.ghz5.a1 = tuple.TupleData[1];
718 sprom->antenna_gain.ghz5.a2 = tuple.TupleData[1];
719 sprom->antenna_gain.ghz5.a3 = tuple.TupleData[1];
721 case SSB_PCMCIA_CIS_BFLAGS:
722 GOTO_ERROR_ON((tuple.TupleDataLen != 3) &&
723 (tuple.TupleDataLen != 5),
725 sprom->boardflags_lo = tuple.TupleData[1] |
726 ((u16)tuple.TupleData[2] << 8);
728 case SSB_PCMCIA_CIS_LEDS:
729 GOTO_ERROR_ON(tuple.TupleDataLen != 5,
731 sprom->gpio0 = tuple.TupleData[1];
732 sprom->gpio1 = tuple.TupleData[2];
733 sprom->gpio2 = tuple.TupleData[3];
734 sprom->gpio3 = tuple.TupleData[4];
737 res = pcmcia_get_next_tuple(bus->host_pcmcia, &tuple);
740 GOTO_ERROR_ON(res != 0, "VEN next tpl");
741 res = pcmcia_get_tuple_data(bus->host_pcmcia, &tuple);
742 GOTO_ERROR_ON(res != 0, "VEN next tpl data");
747 ssb_printk(KERN_ERR PFX
748 "PCMCIA: Failed to fetch device invariants: %s\n",
753 static ssize_t ssb_pcmcia_attr_sprom_show(struct device *pcmciadev,
754 struct device_attribute *attr,
757 struct pcmcia_device *pdev =
758 container_of(pcmciadev, struct pcmcia_device, dev);
761 bus = ssb_pcmcia_dev_to_bus(pdev);
765 return ssb_attr_sprom_show(bus, buf,
766 ssb_pcmcia_sprom_read_all);
769 static ssize_t ssb_pcmcia_attr_sprom_store(struct device *pcmciadev,
770 struct device_attribute *attr,
771 const char *buf, size_t count)
773 struct pcmcia_device *pdev =
774 container_of(pcmciadev, struct pcmcia_device, dev);
777 bus = ssb_pcmcia_dev_to_bus(pdev);
781 return ssb_attr_sprom_store(bus, buf, count,
782 ssb_pcmcia_sprom_check_crc,
783 ssb_pcmcia_sprom_write_all);
786 static DEVICE_ATTR(ssb_sprom, 0600,
787 ssb_pcmcia_attr_sprom_show,
788 ssb_pcmcia_attr_sprom_store);
790 static int ssb_pcmcia_cor_setup(struct ssb_bus *bus, u8 cor)
795 err = ssb_pcmcia_cfg_read(bus, cor, &val);
798 val &= ~COR_SOFT_RESET;
799 val |= COR_FUNC_ENA | COR_IREQ_ENA | COR_LEVEL_REQ;
800 err = ssb_pcmcia_cfg_write(bus, cor, val);
808 /* Initialize the PCMCIA hardware. This is called on Init and Resume. */
809 int ssb_pcmcia_hardware_setup(struct ssb_bus *bus)
813 if (bus->bustype != SSB_BUSTYPE_PCMCIA)
816 /* Switch segment to a known state and sync
817 * bus->mapped_pcmcia_seg with hardware state. */
818 ssb_pcmcia_switch_segment(bus, 0);
819 /* Init the COR register. */
820 err = ssb_pcmcia_cor_setup(bus, CISREG_COR);
823 /* Some cards also need this register to get poked. */
824 err = ssb_pcmcia_cor_setup(bus, CISREG_COR + 0x80);
831 void ssb_pcmcia_exit(struct ssb_bus *bus)
833 if (bus->bustype != SSB_BUSTYPE_PCMCIA)
836 device_remove_file(&bus->host_pcmcia->dev, &dev_attr_ssb_sprom);
839 int ssb_pcmcia_init(struct ssb_bus *bus)
843 if (bus->bustype != SSB_BUSTYPE_PCMCIA)
846 err = ssb_pcmcia_hardware_setup(bus);
850 bus->sprom_size = SSB_PCMCIA_SPROM_SIZE;
851 mutex_init(&bus->sprom_mutex);
852 err = device_create_file(&bus->host_pcmcia->dev, &dev_attr_ssb_sprom);
858 ssb_printk(KERN_ERR PFX "Failed to initialize PCMCIA host device\n");