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authorRusty Russell <rusty@rustcorp.com.au>2005-12-07 15:40:34 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2006-01-04 19:18:09 -0500
commit1d8f430c15b3a345db990e285742c67c2f52f9a6 (patch)
tree7bf8ae0929ebf581c4de68e7f4be9f6ea672d453 /scripts/mod
parent263756ec228f1cdd49fc50b1f87001a4cebdfe12 (diff)
[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/mod')
-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 @@
16 * use either stdint.h or inttypes.h for the rest. */ 16 * use either stdint.h or inttypes.h for the rest. */
17#if KERNEL_ELFCLASS == ELFCLASS32 17#if KERNEL_ELFCLASS == ELFCLASS32
18typedef Elf32_Addr kernel_ulong_t; 18typedef Elf32_Addr kernel_ulong_t;
19#define BITS_PER_LONG 32
19#else 20#else
20typedef Elf64_Addr kernel_ulong_t; 21typedef Elf64_Addr kernel_ulong_t;
22#define BITS_PER_LONG 64
21#endif 23#endif
22#ifdef __sun__ 24#ifdef __sun__
23#include <inttypes.h> 25#include <inttypes.h>
@@ -35,6 +37,7 @@ typedef unsigned char __u8;
35 * even potentially has different endianness and word sizes, since 37 * even potentially has different endianness and word sizes, since
36 * we handle those differences explicitly below */ 38 * we handle those differences explicitly below */
37#include "../../include/linux/mod_devicetable.h" 39#include "../../include/linux/mod_devicetable.h"
40#include "../../include/linux/input.h"
38 41
39#define ADD(str, sep, cond, field) \ 42#define ADD(str, sep, cond, field) \
40do { \ 43do { \
@@ -366,6 +369,61 @@ static int do_i2c_entry(const char *filename, struct i2c_device_id *i2c, char *a
366 return 1; 369 return 1;
367} 370}
368 371
372#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
373
374static void do_input(char *alias,
375 kernel_ulong_t *arr, unsigned int min, unsigned int max)
376{
377 unsigned int i;
378 for (i = min; i < max; i++) {
379 if (arr[i/BITS_PER_LONG] & (1 << (i%BITS_PER_LONG)))
380 sprintf(alias+strlen(alias), "%X,*", i);
381 }
382}
383
384/* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
385static int do_input_entry(const char *filename, struct input_device_id *id,
386 char *alias)
387{
388 sprintf(alias, "input:");
389
390 ADD(alias, "b", id->flags&INPUT_DEVICE_ID_MATCH_BUS, id->id.bustype);
391 ADD(alias, "v", id->flags&INPUT_DEVICE_ID_MATCH_VENDOR, id->id.vendor);
392 ADD(alias, "p", id->flags&INPUT_DEVICE_ID_MATCH_PRODUCT,
393 id->id.product);
394 ADD(alias, "e", id->flags&INPUT_DEVICE_ID_MATCH_VERSION,
395 id->id.version);
396
397 sprintf(alias + strlen(alias), "-e*");
398 if (id->flags&INPUT_DEVICE_ID_MATCH_EVBIT)
399 do_input(alias, id->evbit, 0, EV_MAX);
400 sprintf(alias + strlen(alias), "k*");
401 if (id->flags&INPUT_DEVICE_ID_MATCH_KEYBIT)
402 do_input(alias, id->keybit, KEY_MIN_INTERESTING, KEY_MAX);
403 sprintf(alias + strlen(alias), "r*");
404 if (id->flags&INPUT_DEVICE_ID_MATCH_RELBIT)
405 do_input(alias, id->relbit, 0, REL_MAX);
406 sprintf(alias + strlen(alias), "a*");
407 if (id->flags&INPUT_DEVICE_ID_MATCH_ABSBIT)
408 do_input(alias, id->absbit, 0, ABS_MAX);
409 sprintf(alias + strlen(alias), "m*");
410 if (id->flags&INPUT_DEVICE_ID_MATCH_MSCIT)
411 do_input(alias, id->mscbit, 0, MSC_MAX);
412 sprintf(alias + strlen(alias), "l*");
413 if (id->flags&INPUT_DEVICE_ID_MATCH_LEDBIT)
414 do_input(alias, id->ledbit, 0, LED_MAX);
415 sprintf(alias + strlen(alias), "s*");
416 if (id->flags&INPUT_DEVICE_ID_MATCH_SNDBIT)
417 do_input(alias, id->sndbit, 0, SND_MAX);
418 sprintf(alias + strlen(alias), "f*");
419 if (id->flags&INPUT_DEVICE_ID_MATCH_FFBIT)
420 do_input(alias, id->ffbit, 0, SND_MAX);
421 sprintf(alias + strlen(alias), "w*");
422 if (id->flags&INPUT_DEVICE_ID_MATCH_SWBIT)
423 do_input(alias, id->swbit, 0, SW_MAX);
424 return 1;
425}
426
369/* Ignore any prefix, eg. v850 prepends _ */ 427/* Ignore any prefix, eg. v850 prepends _ */
370static inline int sym_is(const char *symbol, const char *name) 428static inline int sym_is(const char *symbol, const char *name)
371{ 429{
@@ -453,7 +511,9 @@ void handle_moddevtable(struct module *mod, struct elf_info *info,
453 else if (sym_is(symname, "__mod_i2c_device_table")) 511 else if (sym_is(symname, "__mod_i2c_device_table"))
454 do_table(symval, sym->st_size, sizeof(struct i2c_device_id), 512 do_table(symval, sym->st_size, sizeof(struct i2c_device_id),
455 do_i2c_entry, mod); 513 do_i2c_entry, mod);
456 514 else if (sym_is(symname, "__mod_input_device_table"))
515 do_table(symval, sym->st_size, sizeof(struct input_device_id),
516 do_input_entry, mod);
457} 517}
458 518
459/* Now add out buffered information to the generated C source */ 519/* Now add out buffered information to the generated C source */