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| author | Anton Vorontsov <avorontsov@ru.mvista.com> | 2009-09-22 16:46:04 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-23 07:39:43 -0700 |
| commit | 75368bf6c2876d8f33abfe77aa3864869a3893eb (patch) | |
| tree | 97a543508a8aeb45646d059f8cdd561ae0a76ef2 /scripts/mod | |
| parent | b5f3294f0be5496aec01e5aa709a5fab8bb2f225 (diff) | |
| download | lwn-75368bf6c2876d8f33abfe77aa3864869a3893eb.tar.gz lwn-75368bf6c2876d8f33abfe77aa3864869a3893eb.zip | |
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/mod')
| -rw-r--r-- | scripts/mod/file2alias.c | 13 |
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", |