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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-11-11 11:49:38 +1100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-11-11 11:49:38 +1100 |
| commit | 2e47b392d69e17f5614ee7796710a69aa273a8c1 (patch) | |
| tree | 6c8d97b2b9624f82bc7d94fc71faaacfd4648431 /include | |
| parent | d3d9c9e6b9a20bcc138d98c87ffaa48b4776d4c2 (diff) | |
| download | skiboot-2e47b392d69e17f5614ee7796710a69aa273a8c1.zip skiboot-2e47b392d69e17f5614ee7796710a69aa273a8c1.tar.gz skiboot-2e47b392d69e17f5614ee7796710a69aa273a8c1.tar.bz2 | |
i2c: Move bus management and OPAL API to core i2c code
And start adding interfaces to lookup i2c busses.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/i2c.h | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/include/i2c.h b/include/i2c.h index af88ba0..2647bdc 100644 --- a/include/i2c.h +++ b/include/i2c.h @@ -21,9 +21,9 @@ struct i2c_request; struct i2c_bus { struct list_node link; - struct dt_node *i2c_port; - int (*queue_req)(struct i2c_bus *bus, - struct i2c_request *req); + struct dt_node *dt_node; + uint32_t opal_id; + int (*queue_req)(struct i2c_request *req); struct i2c_request *(*alloc_req)(struct i2c_bus *bus); void (*free_req)(struct i2c_request *req); }; @@ -47,6 +47,28 @@ struct i2c_request { void *user_data; /* Client data */ }; +extern struct list_head i2c_bus_list; + +/* Generic i2c */ +extern void i2c_add_bus(struct i2c_bus *bus); +extern struct i2c_bus *i2c_find_bus_by_id(uint32_t opal_id); + +static inline struct i2c_request *i2c_alloc_req(struct i2c_bus *bus) +{ + return bus->alloc_req(bus); +} + +static inline void i2c_free_req(struct i2c_request *req) +{ + req->bus->free_req(req); +} + +static inline int i2c_queue_req(struct i2c_request *req) +{ + return req->bus->queue_req(req); +} + +/* P8 implementation details */ extern void p8_i2c_init(void); extern void p8_i2c_interrupt(void); |