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-rw-r--r--drivers/input/input.c39
-rw-r--r--include/linux/input.h79
-rw-r--r--scripts/mod/file2alias.c62
3 files changed, 141 insertions, 39 deletions
diff --git a/drivers/input/input.c b/drivers/input/input.c
index 2d37b394e38..ef5824c8846 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -528,10 +528,49 @@ INPUT_DEV_STRING_ATTR_SHOW(name);
INPUT_DEV_STRING_ATTR_SHOW(phys);
INPUT_DEV_STRING_ATTR_SHOW(uniq);
+static int print_modalias_bits(char *buf, char prefix, unsigned long *arr,
+ unsigned int min, unsigned int max)
+{
+ int len, i;
+
+ len = sprintf(buf, "%c", prefix);
+ for (i = min; i < max; i++)
+ if (arr[LONG(i)] & BIT(i))
+ len += sprintf(buf+len, "%X,", i);
+ return len;
+}
+
+static ssize_t input_dev_show_modalias(struct class_device *dev, char *buf)
+{
+ struct input_dev *id = to_input_dev(dev);
+ ssize_t len = 0;
+
+ len += sprintf(buf+len, "input:b%04Xv%04Xp%04Xe%04X-",
+ id->id.bustype,
+ id->id.vendor,
+ id->id.product,
+ id->id.version);
+
+ len += print_modalias_bits(buf+len, 'e', id->evbit, 0, EV_MAX);
+ len += print_modalias_bits(buf+len, 'k', id->keybit,
+ KEY_MIN_INTERESTING, KEY_MAX);
+ len += print_modalias_bits(buf+len, 'r', id->relbit, 0, REL_MAX);
+ len += print_modalias_bits(buf+len, 'a', id->absbit, 0, ABS_MAX);
+ len += print_modalias_bits(buf+len, 'm', id->mscbit, 0, MSC_MAX);
+ len += print_modalias_bits(buf+len, 'l', id->ledbit, 0, LED_MAX);
+ len += print_modalias_bits(buf+len, 's', id->sndbit, 0, SND_MAX);
+ len += print_modalias_bits(buf+len, 'f', id->ffbit, 0, FF_MAX);
+ len += print_modalias_bits(buf+len, 'w', id->swbit, 0, SW_MAX);
+ len += sprintf(buf+len, "\n");
+ return len;
+}
+static CLASS_DEVICE_ATTR(modalias, S_IRUGO, input_dev_show_modalias, NULL);
+
static struct attribute *input_dev_attrs[] = {
&class_device_attr_name.attr,
&class_device_attr_phys.attr,
&class_device_attr_uniq.attr,
+ &class_device_attr_modalias.attr,
NULL
};
diff --git a/include/linux/input.h b/include/linux/input.h
index 3c5823368dd..bef08551a33 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -18,6 +18,7 @@
#include <sys/ioctl.h>
#include <asm/types.h>
#endif
+#include <linux/mod_devicetable.h>
/*
* The event structure itself
@@ -511,6 +512,8 @@ struct input_absinfo {
#define KEY_FN_S 0x1e3
#define KEY_FN_B 0x1e4
+/* We avoid low common keys in module aliases so they don't get huge. */
+#define KEY_MIN_INTERESTING KEY_MUTE
#define KEY_MAX 0x1ff
/*
@@ -793,6 +796,44 @@ struct ff_effect {
#define FF_MAX 0x7f
+struct input_device_id {
+
+ kernel_ulong_t flags;
+
+ struct input_id id;
+
+ kernel_ulong_t evbit[EV_MAX/BITS_PER_LONG+1];
+ kernel_ulong_t keybit[KEY_MAX/BITS_PER_LONG+1];
+ kernel_ulong_t relbit[REL_MAX/BITS_PER_LONG+1];
+ kernel_ulong_t absbit[ABS_MAX/BITS_PER_LONG+1];
+ kernel_ulong_t mscbit[MSC_MAX/BITS_PER_LONG+1];
+ kernel_ulong_t ledbit[LED_MAX/BITS_PER_LONG+1];
+ kernel_ulong_t sndbit[SND_MAX/BITS_PER_LONG+1];
+ kernel_ulong_t ffbit[FF_MAX/BITS_PER_LONG+1];
+ kernel_ulong_t swbit[SW_MAX/BITS_PER_LONG+1];
+
+ kernel_ulong_t driver_info;
+};
+
+/*
+ * Structure for hotplug & device<->driver matching.
+ */
+
+#define INPUT_DEVICE_ID_MATCH_BUS 1
+#define INPUT_DEVICE_ID_MATCH_VENDOR 2
+#define INPUT_DEVICE_ID_MATCH_PRODUCT 4
+#define INPUT_DEVICE_ID_MATCH_VERSION 8
+
+#define INPUT_DEVICE_ID_MATCH_EVBIT 0x010
+#define INPUT_DEVICE_ID_MATCH_KEYBIT 0x020
+#define INPUT_DEVICE_ID_MATCH_RELBIT 0x040
+#define INPUT_DEVICE_ID_MATCH_ABSBIT 0x080
+#define INPUT_DEVICE_ID_MATCH_MSCIT 0x100
+#define INPUT_DEVICE_ID_MATCH_LEDBIT 0x200
+#define INPUT_DEVICE_ID_MATCH_SNDBIT 0x400
+#define INPUT_DEVICE_ID_MATCH_FFBIT 0x800
+#define INPUT_DEVICE_ID_MATCH_SWBIT 0x1000
+
#ifdef __KERNEL__
/*
@@ -901,49 +942,11 @@ struct input_dev {
};
#define to_input_dev(d) container_of(d, struct input_dev, cdev)
-/*
- * Structure for hotplug & device<->driver matching.
- */
-
-#define INPUT_DEVICE_ID_MATCH_BUS 1
-#define INPUT_DEVICE_ID_MATCH_VENDOR 2
-#define INPUT_DEVICE_ID_MATCH_PRODUCT 4
-#define INPUT_DEVICE_ID_MATCH_VERSION 8
-
-#define INPUT_DEVICE_ID_MATCH_EVBIT 0x010
-#define INPUT_DEVICE_ID_MATCH_KEYBIT 0x020
-#define INPUT_DEVICE_ID_MATCH_RELBIT 0x040
-#define INPUT_DEVICE_ID_MATCH_ABSBIT 0x080
-#define INPUT_DEVICE_ID_MATCH_MSCIT 0x100
-#define INPUT_DEVICE_ID_MATCH_LEDBIT 0x200
-#define INPUT_DEVICE_ID_MATCH_SNDBIT 0x400
-#define INPUT_DEVICE_ID_MATCH_FFBIT 0x800
-#define INPUT_DEVICE_ID_MATCH_SWBIT 0x1000
-
#define INPUT_DEVICE_ID_MATCH_DEVICE\
(INPUT_DEVICE_ID_MATCH_BUS | INPUT_DEVICE_ID_MATCH_VENDOR | INPUT_DEVICE_ID_MATCH_PRODUCT)
#define INPUT_DEVICE_ID_MATCH_DEVICE_AND_VERSION\
(INPUT_DEVICE_ID_MATCH_DEVICE | INPUT_DEVICE_ID_MATCH_VERSION)
-struct input_device_id {
-
- unsigned long flags;
-
- struct input_id id;
-
- unsigned long evbit[NBITS(EV_MAX)];
- unsigned long keybit[NBITS(KEY_MAX)];
- unsigned long relbit[NBITS(REL_MAX)];
- unsigned long absbit[NBITS(ABS_MAX)];
- unsigned long mscbit[NBITS(MSC_MAX)];
- unsigned long ledbit[NBITS(LED_MAX)];
- unsigned long sndbit[NBITS(SND_MAX)];
- unsigned long ffbit[NBITS(FF_MAX)];
- unsigned long swbit[NBITS(SW_MAX)];
-
- unsigned long driver_info;
-};
-
struct input_handle;
struct input_handler {
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index e3d144a3f10..e0eedffe565 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 */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-13 09:23:47 +0000