dcb34abb4d
Provide a "compatible" entry in /sys/bus/macio/devices/*/ This can be used to load drivers via the modules.alias file. Signed-off-by: Olaf Hering <olh@suse.de> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
76 lines
1.6 KiB
C
76 lines
1.6 KiB
C
#include <linux/config.h>
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#include <linux/kernel.h>
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#include <linux/stat.h>
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#include <asm/macio.h>
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#define macio_config_of_attr(field, format_string) \
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static ssize_t \
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field##_show (struct device *dev, struct device_attribute *attr, \
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char *buf) \
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{ \
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struct macio_dev *mdev = to_macio_device (dev); \
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return sprintf (buf, format_string, mdev->ofdev.node->field); \
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}
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static ssize_t
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compatible_show (struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct of_device *of;
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char *compat;
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int cplen;
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int length = 0;
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of = &to_macio_device (dev)->ofdev;
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compat = (char *) get_property(of->node, "compatible", &cplen);
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if (!compat) {
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*buf = '\0';
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return 0;
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}
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while (cplen > 0) {
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int l;
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length += sprintf (buf, "%s\n", compat);
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buf += length;
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l = strlen (compat) + 1;
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compat += l;
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cplen -= l;
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}
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return length;
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}
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static ssize_t modalias_show (struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct of_device *of;
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char *compat;
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int cplen;
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int length;
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of = &to_macio_device (dev)->ofdev;
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compat = (char *) get_property (of->node, "compatible", &cplen);
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if (!compat) compat = "", cplen = 1;
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length = sprintf (buf, "of:N%sT%s", of->node->name, of->node->type);
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buf += length;
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while (cplen > 0) {
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int l;
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length += sprintf (buf, "C%s", compat);
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buf += length;
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l = strlen (compat) + 1;
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compat += l;
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cplen -= l;
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}
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return length;
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}
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macio_config_of_attr (name, "%s\n");
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macio_config_of_attr (type, "%s\n");
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struct device_attribute macio_dev_attrs[] = {
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__ATTR_RO(name),
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__ATTR_RO(type),
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__ATTR_RO(compatible),
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__ATTR_RO(modalias),
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__ATTR_NULL
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};
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