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authorPaul Mundt <lethal@linux-sh.org>2005-11-07 00:58:21 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-07 07:53:28 -0800
commit055a2512144cd7e60dcaae7a13e460df43b98787 (patch)
treebf304d17352f1b3b59edb35a6f67672c6490caa1 /include/linux/superhyway.h
parent72777373b3a09c9132a787d5e1e03eaf64f30a64 (diff)
[PATCH] superhyway: multiple block support and VCR rework
This extends the API somewhat to allow for platform-specific VCR reading and writing. Some platforms (like SH4-202) implement the VCR in a split VCRL and VCRH, but end up being in reverse order or have other quirks that need to be dealt with, so we add a set of superhyway_ops per-bus to accomodate this. We also have to extend the per-device resources somewhat, as some devices now conveniently split control and data blocks. So we allow a platform to register its set of SuperHyway devices via superhyway_add_devices() with the control block always ordered as the first resource (as this is the one that userspace cares about). Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/superhyway.h')
-rw-r--r--include/linux/superhyway.h38
1 files changed, 33 insertions, 5 deletions
diff --git a/include/linux/superhyway.h b/include/linux/superhyway.h
index c906c5a0aaef..17ea468fa362 100644
--- a/include/linux/superhyway.h
+++ b/include/linux/superhyway.h
@@ -19,7 +19,7 @@
*/
#define SUPERHYWAY_DEVICE_ID_SH5_DMAC 0x0183
-struct vcr_info {
+struct superhyway_vcr_info {
u8 perr_flags; /* P-port Error flags */
u8 merr_flags; /* Module Error flags */
u16 mod_vers; /* Module Version */
@@ -28,6 +28,17 @@ struct vcr_info {
u8 top_mb; /* Top Memory block */
};
+struct superhyway_ops {
+ int (*read_vcr)(unsigned long base, struct superhyway_vcr_info *vcr);
+ int (*write_vcr)(unsigned long base, struct superhyway_vcr_info vcr);
+};
+
+struct superhyway_bus {
+ struct superhyway_ops *ops;
+};
+
+extern struct superhyway_bus superhyway_channels[];
+
struct superhyway_device_id {
unsigned int id;
unsigned long driver_data;
@@ -55,9 +66,11 @@ struct superhyway_device {
struct superhyway_device_id id;
struct superhyway_driver *drv;
+ struct superhyway_bus *bus;
- struct resource resource;
- struct vcr_info vcr;
+ int num_resources;
+ struct resource *resource;
+ struct superhyway_vcr_info vcr;
};
#define to_superhyway_device(d) container_of((d), struct superhyway_device, dev)
@@ -65,12 +78,27 @@ struct superhyway_device {
#define superhyway_get_drvdata(d) dev_get_drvdata(&(d)->dev)
#define superhyway_set_drvdata(d,p) dev_set_drvdata(&(d)->dev, (p))
-extern int superhyway_scan_bus(void);
+static inline int
+superhyway_read_vcr(struct superhyway_device *dev, unsigned long base,
+ struct superhyway_vcr_info *vcr)
+{
+ return dev->bus->ops->read_vcr(base, vcr);
+}
+
+static inline int
+superhyway_write_vcr(struct superhyway_device *dev, unsigned long base,
+ struct superhyway_vcr_info vcr)
+{
+ return dev->bus->ops->write_vcr(base, vcr);
+}
+
+extern int superhyway_scan_bus(struct superhyway_bus *);
/* drivers/sh/superhyway/superhyway.c */
int superhyway_register_driver(struct superhyway_driver *);
void superhyway_unregister_driver(struct superhyway_driver *);
-int superhyway_add_device(unsigned int, unsigned long, unsigned long long);
+int superhyway_add_device(unsigned long base, struct superhyway_device *, struct superhyway_bus *);
+int superhyway_add_devices(struct superhyway_bus *bus, struct superhyway_device **devices, int nr_devices);
/* drivers/sh/superhyway/superhyway-sysfs.c */
extern struct device_attribute superhyway_dev_attrs[];