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| author | Neelesh Gupta <neelegup@linux.vnet.ibm.com> | 2014-10-25 23:33:52 +0530 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2014-10-27 18:13:41 +1100 |
| commit | 2fe43d8776b19ff5896312c8bfef6a46156d0d48 (patch) | |
| tree | 14c00d74019d94ae7ce7af1d79565cc6c0b18adc /include/lpc.h | |
| parent | 531bdefda91102cb3240e4e3289900af0a50e78b (diff) | |
| download | skiboot-2fe43d8776b19ff5896312c8bfef6a46156d0d48.zip skiboot-2fe43d8776b19ff5896312c8bfef6a46156d0d48.tar.gz skiboot-2fe43d8776b19ff5896312c8bfef6a46156d0d48.tar.bz2 | |
hw/i2c: i2c driver infrastructure providing device I/O
This patch adds the generic i2c driver infrastructure to handle multiple i2c
master cores present in the system and exposes structures and interfaces for
the client to perform I/O on the i2c slave devices.
The driver adds the capability to queue multiple requests from client and
let clients notified asynchronously after completion. It does that by
handling the i2c interrupt or through OPAL poller in the absence of
interrupt.
Signed-off-by: Neelesh Gupta <neelegup@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'include/lpc.h')
| -rw-r--r-- | include/lpc.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/lpc.h b/include/lpc.h index 6463c3d..e4e24ea 100644 --- a/include/lpc.h +++ b/include/lpc.h @@ -27,6 +27,9 @@ extern void lpc_init(void); /* Check for a default bus */ extern bool lpc_present(void); +/* Handle the interrupt from LPC source */ +extern void lpc_interrupt(void); + /* Default bus accessors */ extern int64_t lpc_write(enum OpalLPCAddressType addr_type, uint32_t addr, uint32_t data, uint32_t sz); |