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author | 2007-10-16 23:26:20 -0700 | |
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committer | 2007-10-17 08:42:48 -0700 | |
commit | 2b571a066a2fee14189a297ce8adc5212c58074c (patch) | |
tree | 742ac4893aa8beef1a6975fed5c9bb7530423547 /arch | |
parent | fs: use kmem_cache_zalloc instead (diff) | |
download | linux-2b571a066a2fee14189a297ce8adc5212c58074c.tar.gz linux-2b571a066a2fee14189a297ce8adc5212c58074c.tar.bz2 linux-2b571a066a2fee14189a297ce8adc5212c58074c.zip |
pcmcia: CompactFlash driver for PA Semi Electra boards
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>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/powerpc/platforms/pasemi/setup.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pasemi/setup.c b/arch/powerpc/platforms/pasemi/setup.c index 5ddf40a66ae8..3a5d112af5e0 100644 --- a/arch/powerpc/platforms/pasemi/setup.c +++ b/arch/powerpc/platforms/pasemi/setup.c @@ -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); |