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pcmcia: CompactFlash driver for PA Semi Electra boards

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Driver for the CompactFlash slot on the PA Semi Electra eval board. It's
a simple device sitting on localbus, with interrupts and detect/voltage
control over GPIO.

The driver is implemented as an of_platform driver, and adds localbus
as a bus being probed by the of_platform framework.

[akpm@linux-foundation.org: cleanups]
[olof@lixom.net: fix build]
Signed-off-by: Olof Johansson <olof@lixom.net>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Milton Miller <miltonm@bga.com>
Cc: Kumar Gala <galak@gate.crashing.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Olof Johansson
2007-10-16 23:26:20 -07:00
committed by Linus Torvalds
parent 4975e45ff6
commit 2b571a066a
4 changed files with 441 additions and 0 deletions
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56
arch/powerpc/platforms/pasemi/setup.c
View File

@@ -37,6 +37,10 @@
#include <asm/time.h>
#include <asm/of_platform.h>
#include <pcmcia/ss.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/ds.h>
#include "pasemi.h"
/* SDC reset register, must be pre-mapped at reset time */
@@ -308,7 +312,57 @@ static void __init pas_init_early(void)
iommu_init_early_pasemi();
}
#ifdef CONFIG_PCMCIA
static int pcmcia_notify(struct notifier_block *nb, unsigned long action,
void *data)
{
struct device *dev = data;
struct device *parent;
struct pcmcia_device *pdev = to_pcmcia_dev(dev);
/* We are only intereted in device addition */
if (action != BUS_NOTIFY_ADD_DEVICE)
return 0;
parent = pdev->socket->dev.parent;
/* We know electra_cf devices will always have of_node set, since
* electra_cf is an of_platform driver.
*/
if (!parent->archdata.of_node)
return 0;
if (!of_device_is_compatible(parent->archdata.of_node, "electra-cf"))
return 0;
/* We use the direct ops for localbus */
dev->archdata.dma_ops = &dma_direct_ops;
return 0;
}
static struct notifier_block pcmcia_notifier = {
.notifier_call = pcmcia_notify,
};
static inline void pasemi_pcmcia_init(void)
{
extern struct bus_type pcmcia_bus_type;
bus_register_notifier(&pcmcia_bus_type, &pcmcia_notifier);
}
#else
static inline void pasemi_pcmcia_init(void)
{
}
#endif
static struct of_device_id pasemi_bus_ids[] = {
{ .type = "localbus", },
{ .type = "sdc", },
{},
};
@@ -318,6 +372,8 @@ static int __init pasemi_publish_devices(void)
if (!machine_is(pasemi))
return 0;
pasemi_pcmcia_init();
/* Publish OF platform devices for SDC and other non-PCI devices */
of_platform_bus_probe(NULL, pasemi_bus_ids, NULL);