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authorRusty Russell <rusty@rustcorp.com.au>2005-12-07 21:40:34 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2006-01-04 16:18:09 -0800
commit1d8f430c15b3a345db990e285742c67c2f52f9a6 (patch)
tree7bf8ae0929ebf581c4de68e7f4be9f6ea672d453 /scripts
parent263756ec228f1cdd49fc50b1f87001a4cebdfe12 (diff)
downloadlinux-linaro-stable-1d8f430c15b3a345db990e285742c67c2f52f9a6.tar.gz
[PATCH] Input: add modalias support
Here's the patch for modalias support for input classes. It uses comma-separated numbers, and doesn't describe all the potential keys (no module currently cares, and that would make the strings huge). The changes to input.h are to move the definitions needed by file2alias outside __KERNEL__. I chose not to move those definitions to mod_devicetable.h, because there are so many that it might break compile of something else in the kernel. The rest is fairly straightforward. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> CC: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'scripts')
-rw-r--r--scripts/mod/file2alias.c62
1 files changed, 61 insertions, 1 deletions
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index e3d144a3f10b..e0eedffe565b 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -16,8 +16,10 @@
* use either stdint.h or inttypes.h for the rest. */
#if KERNEL_ELFCLASS == ELFCLASS32
typedef Elf32_Addr kernel_ulong_t;
+#define BITS_PER_LONG 32
#else
typedef Elf64_Addr kernel_ulong_t;
+#define BITS_PER_LONG 64
#endif
#ifdef __sun__
#include <inttypes.h>
@@ -35,6 +37,7 @@ typedef unsigned char __u8;
* even potentially has different endianness and word sizes, since
* we handle those differences explicitly below */
#include "../../include/linux/mod_devicetable.h"
+#include "../../include/linux/input.h"
#define ADD(str, sep, cond, field) \
do { \
@@ -366,6 +369,61 @@ static int do_i2c_entry(const char *filename, struct i2c_device_id *i2c, char *a
return 1;
}
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+static void do_input(char *alias,
+ kernel_ulong_t *arr, unsigned int min, unsigned int max)
+{
+ unsigned int i;
+ for (i = min; i < max; i++) {
+ if (arr[i/BITS_PER_LONG] & (1 << (i%BITS_PER_LONG)))
+ sprintf(alias+strlen(alias), "%X,*", i);
+ }
+}
+
+/* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
+static int do_input_entry(const char *filename, struct input_device_id *id,
+ char *alias)
+{
+ sprintf(alias, "input:");
+
+ ADD(alias, "b", id->flags&INPUT_DEVICE_ID_MATCH_BUS, id->id.bustype);
+ ADD(alias, "v", id->flags&INPUT_DEVICE_ID_MATCH_VENDOR, id->id.vendor);
+ ADD(alias, "p", id->flags&INPUT_DEVICE_ID_MATCH_PRODUCT,
+ id->id.product);
+ ADD(alias, "e", id->flags&INPUT_DEVICE_ID_MATCH_VERSION,
+ id->id.version);
+
+ sprintf(alias + strlen(alias), "-e*");
+ if (id->flags&INPUT_DEVICE_ID_MATCH_EVBIT)
+ do_input(alias, id->evbit, 0, EV_MAX);
+ sprintf(alias + strlen(alias), "k*");
+ if (id->flags&INPUT_DEVICE_ID_MATCH_KEYBIT)
+ do_input(alias, id->keybit, KEY_MIN_INTERESTING, KEY_MAX);
+ sprintf(alias + strlen(alias), "r*");
+ if (id->flags&INPUT_DEVICE_ID_MATCH_RELBIT)
+ do_input(alias, id->relbit, 0, REL_MAX);
+ sprintf(alias + strlen(alias), "a*");
+ if (id->flags&INPUT_DEVICE_ID_MATCH_ABSBIT)
+ do_input(alias, id->absbit, 0, ABS_MAX);
+ sprintf(alias + strlen(alias), "m*");
+ if (id->flags&INPUT_DEVICE_ID_MATCH_MSCIT)
+ do_input(alias, id->mscbit, 0, MSC_MAX);
+ sprintf(alias + strlen(alias), "l*");
+ if (id->flags&INPUT_DEVICE_ID_MATCH_LEDBIT)
+ do_input(alias, id->ledbit, 0, LED_MAX);
+ sprintf(alias + strlen(alias), "s*");
+ if (id->flags&INPUT_DEVICE_ID_MATCH_SNDBIT)
+ do_input(alias, id->sndbit, 0, SND_MAX);
+ sprintf(alias + strlen(alias), "f*");
+ if (id->flags&INPUT_DEVICE_ID_MATCH_FFBIT)
+ do_input(alias, id->ffbit, 0, SND_MAX);
+ sprintf(alias + strlen(alias), "w*");
+ if (id->flags&INPUT_DEVICE_ID_MATCH_SWBIT)
+ do_input(alias, id->swbit, 0, SW_MAX);
+ return 1;
+}
+
/* Ignore any prefix, eg. v850 prepends _ */
static inline int sym_is(const char *symbol, const char *name)
{
@@ -453,7 +511,9 @@ void handle_moddevtable(struct module *mod, struct elf_info *info,
else if (sym_is(symname, "__mod_i2c_device_table"))
do_table(symval, sym->st_size, sizeof(struct i2c_device_id),
do_i2c_entry, mod);
-
+ else if (sym_is(symname, "__mod_input_device_table"))
+ do_table(symval, sym->st_size, sizeof(struct input_device_id),
+ do_input_entry, mod);
}
/* Now add out buffered information to the generated C source */