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authorAnton Vorontsov <avorontsov@ru.mvista.com>2009-09-23 03:46:04 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-23 18:39:43 +0400
commit75368bf6c2876d8f33abfe77aa3864869a3893eb (patch)
tree97a543508a8aeb45646d059f8cdd561ae0a76ef2 /include/linux/mod_devicetable.h
parentb5f3294f0be5496aec01e5aa709a5fab8bb2f225 (diff)
downloadlinux-75368bf6c2876d8f33abfe77aa3864869a3893eb.tar.xz
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 'include/linux/mod_devicetable.h')
-rw-r--r--include/linux/mod_devicetable.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index 1bf5900ffe43..b34f1ef2f1fe 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -399,6 +399,16 @@ struct i2c_device_id {
__attribute__((aligned(sizeof(kernel_ulong_t))));
};
+/* spi */
+
+#define SPI_NAME_SIZE 32
+
+struct spi_device_id {
+ char name[SPI_NAME_SIZE];
+ kernel_ulong_t driver_data /* Data private to the driver */
+ __attribute__((aligned(sizeof(kernel_ulong_t))));
+};
+
/* dmi */
enum dmi_field {
DMI_NONE,