lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[PATCH] superhyway: multiple block support and VCR rework

Browse Source 
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>
This commit is contained in:
Paul Mundt
2005-11-07 00:58:21 -08:00
committed by Linus Torvalds
parent 72777373b3
commit 055a251214
3 changed files with 89 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
include/linux/superhyway.h
View File

@@ -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[];