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authorAnton Vorontsov <avorontsov@ru.mvista.com>2009-09-22 16:46:04 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-23 07:39:43 -0700
commit75368bf6c2876d8f33abfe77aa3864869a3893eb (patch)
tree97a543508a8aeb45646d059f8cdd561ae0a76ef2 /scripts
parentb5f3294f0be5496aec01e5aa709a5fab8bb2f225 (diff)
downloadlinux-linaro-stable-75368bf6c2876d8f33abfe77aa3864869a3893eb.tar.gz
spi: add support for device table matching
With this patch spi drivers can use standard spi_driver.id_table and MODULE_DEVICE_TABLE() mechanisms to bind against the devices. Just like we do with I2C drivers. This is useful when a single driver supports several variants of devices but it is not possible to detect them in run-time (like non-JEDEC chips probing in drivers/mtd/devices/m25p80.c), and when platform_data usage is overkill. This patch also makes life a lot easier on OpenFirmware platforms, since with OF we extensively use proper device IDs in modaliases. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Jean Delvare <khali@linux-fr.org> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts')
-rw-r--r--scripts/mod/file2alias.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index 40e0045876ee..9d446e34519c 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -657,6 +657,15 @@ static int do_i2c_entry(const char *filename, struct i2c_device_id *id,
return 1;
}
+/* Looks like: S */
+static int do_spi_entry(const char *filename, struct spi_device_id *id,
+ char *alias)
+{
+ sprintf(alias, "%s", id->name);
+
+ return 1;
+}
+
static const struct dmifield {
const char *prefix;
int field;
@@ -853,6 +862,10 @@ 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_spi_device_table"))
+ do_table(symval, sym->st_size,
+ sizeof(struct spi_device_id), "spi",
+ do_spi_entry, mod);
else if (sym_is(symname, "__mod_dmi_device_table"))
do_table(symval, sym->st_size,
sizeof(struct dmi_system_id), "dmi",