055a251214
This extends the API somewhat to allow for platform-specific VCR reading and writing. Some platforms (like SH4-202) implement the VCR in a split VCRL and VCRH, but end up being in reverse order or have other quirks that need to be dealt with, so we add a set of superhyway_ops per-bus to accomodate this. We also have to extend the per-device resources somewhat, as some devices now conveniently split control and data blocks. So we allow a platform to register its set of SuperHyway devices via superhyway_add_devices() with the control block always ordered as the first resource (as this is the one that userspace cares about). Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/*
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* drivers/sh/superhyway/superhyway-sysfs.c
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*
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* SuperHyway Bus sysfs interface
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*
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* Copyright (C) 2004, 2005 Paul Mundt <lethal@linux-sh.org>
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <linux/types.h>
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#include <linux/superhyway.h>
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#define superhyway_ro_attr(name, fmt, field) \
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static ssize_t name##_show(struct device *dev, struct device_attribute *attr, char *buf) \
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{ \
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struct superhyway_device *s = to_superhyway_device(dev); \
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return sprintf(buf, fmt, s->field); \
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}
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/* VCR flags */
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superhyway_ro_attr(perr_flags, "0x%02x\n", vcr.perr_flags);
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superhyway_ro_attr(merr_flags, "0x%02x\n", vcr.merr_flags);
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superhyway_ro_attr(mod_vers, "0x%04x\n", vcr.mod_vers);
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superhyway_ro_attr(mod_id, "0x%04x\n", vcr.mod_id);
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superhyway_ro_attr(bot_mb, "0x%02x\n", vcr.bot_mb);
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superhyway_ro_attr(top_mb, "0x%02x\n", vcr.top_mb);
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/* Misc */
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superhyway_ro_attr(resource, "0x%08lx\n", resource[0].start);
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struct device_attribute superhyway_dev_attrs[] = {
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__ATTR_RO(perr_flags),
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__ATTR_RO(merr_flags),
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__ATTR_RO(mod_vers),
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__ATTR_RO(mod_id),
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__ATTR_RO(bot_mb),
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__ATTR_RO(top_mb),
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__ATTR_RO(resource),
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__ATTR_NULL,
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};
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