Automatic MODULE_ALIAS() for DMI match tables.

[linux-2.6-omap-h63xx.git] / scripts / mod / file2alias.c

diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index 4c9890ec252875500c6c35d388fdd44af9545f34..473f94e56eade0f26195a6afadc90559a11cef2c 100644 (file)
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -629,6 +629,59 @@ static int do_i2c_entry(const char *filename, struct i2c_device_id *id,
        return 1;
 }
 
+static const struct dmifield {
+       const char *prefix;
+       int field;
+} dmi_fields[] = {
+       { "bvn", DMI_BIOS_VENDOR },
+       { "bvr", DMI_BIOS_VERSION },
+       { "bd",  DMI_BIOS_DATE },
+       { "svn", DMI_SYS_VENDOR },
+       { "pn",  DMI_PRODUCT_NAME },
+       { "pvr", DMI_PRODUCT_VERSION },
+       { "rvn", DMI_BOARD_VENDOR },
+       { "rn",  DMI_BOARD_NAME },
+       { "rvr", DMI_BOARD_VERSION },
+       { "cvn", DMI_CHASSIS_VENDOR },
+       { "ct",  DMI_CHASSIS_TYPE },
+       { "cvr", DMI_CHASSIS_VERSION },
+       { NULL,  DMI_NONE }
+};
+
+static void dmi_ascii_filter(char *d, const char *s)
+{
+       /* Filter out characters we don't want to see in the modalias string */
+       for (; *s; s++)
+               if (*s > ' ' && *s < 127 && *s != ':')
+                       *(d++) = *s;
+
+       *d = 0;
+}
+
+
+static int do_dmi_entry(const char *filename, struct dmi_system_id *id,
+                       char *alias)
+{
+       int i, j;
+
+       sprintf(alias, "dmi*");
+
+       for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) {
+               for (j = 0; j < 4; j++) {
+                       if (id->matches[j].slot &&
+                           id->matches[j].slot == dmi_fields[i].field) {
+                               sprintf(alias + strlen(alias), ":%s*",
+                                       dmi_fields[i].prefix);
+                               dmi_ascii_filter(alias + strlen(alias),
+                                                id->matches[j].substr);
+                               strcat(alias, "*");
+                       }
+               }
+       }
+
+       strcat(alias, ":");
+       return 1;
+}
 /* Ignore any prefix, eg. some architectures prepend _ */
 static inline int sym_is(const char *symbol, const char *name)
 {
@@ -760,6 +813,10 @@ void handle_moddevtable(struct module *mod, struct elf_info *info,
                do_table(symval, sym->st_size,
                         sizeof(struct i2c_device_id), "i2c",
                         do_i2c_entry, mod);
+       else if (sym_is(symname, "__mod_dmi_device_table"))
+               do_table(symval, sym->st_size,
+                        sizeof(struct dmi_system_id), "dmi",
+                        do_dmi_entry, mod);
        free(zeros);
 }