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| author | Srinivas Kandagatla <srinivas.kandagatla@linaro.org> | 2017-12-11 23:43:03 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-12-19 11:01:03 +0100 |
| commit | ce96188b12432b097f6b5b3d0d0b92aac9620e64 (patch) | |
| tree | ea0be75678908a5ad35ba2ff42ca9de70d0ca7a9 /drivers/slimbus | |
| parent | 7d6f7fb053ad543da74119df3c4cd7bb46220471 (diff) | |
| download | lwn-ce96188b12432b097f6b5b3d0d0b92aac9620e64.tar.gz lwn-ce96188b12432b097f6b5b3d0d0b92aac9620e64.zip | |
slimbus: core: add common defines required for controllers
This patch adds some common constant defines which are required
for qcom slim controller driver.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviwed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/slimbus')
| -rw-r--r-- | drivers/slimbus/slimbus.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/slimbus/slimbus.h b/drivers/slimbus/slimbus.h index db089134f673..79f8e05d92dd 100644 --- a/drivers/slimbus/slimbus.h +++ b/drivers/slimbus/slimbus.h @@ -11,9 +11,38 @@ #include <linux/completion.h> #include <linux/slimbus.h> +/* Standard values per SLIMbus spec needed by controllers and devices */ +#define SLIM_CL_PER_SUPERFRAME 6144 +#define SLIM_CL_PER_SUPERFRAME_DIV8 (SLIM_CL_PER_SUPERFRAME >> 3) + /* SLIMbus message types. Related to interpretation of message code. */ #define SLIM_MSG_MT_CORE 0x0 +/* + * SLIM Broadcast header format + * BYTE 0: MT[7:5] RL[4:0] + * BYTE 1: RSVD[7] MC[6:0] + * BYTE 2: RSVD[7:6] DT[5:4] PI[3:0] + */ +#define SLIM_MSG_MT_MASK GENMASK(2, 0) +#define SLIM_MSG_MT_SHIFT 5 +#define SLIM_MSG_RL_MASK GENMASK(4, 0) +#define SLIM_MSG_RL_SHIFT 0 +#define SLIM_MSG_MC_MASK GENMASK(6, 0) +#define SLIM_MSG_MC_SHIFT 0 +#define SLIM_MSG_DT_MASK GENMASK(1, 0) +#define SLIM_MSG_DT_SHIFT 4 + +#define SLIM_HEADER_GET_MT(b) ((b >> SLIM_MSG_MT_SHIFT) & SLIM_MSG_MT_MASK) +#define SLIM_HEADER_GET_RL(b) ((b >> SLIM_MSG_RL_SHIFT) & SLIM_MSG_RL_MASK) +#define SLIM_HEADER_GET_MC(b) ((b >> SLIM_MSG_MC_SHIFT) & SLIM_MSG_MC_MASK) +#define SLIM_HEADER_GET_DT(b) ((b >> SLIM_MSG_DT_SHIFT) & SLIM_MSG_DT_MASK) + +/* Device management messages used by this framework */ +#define SLIM_MSG_MC_REPORT_PRESENT 0x1 +#define SLIM_MSG_MC_ASSIGN_LOGICAL_ADDRESS 0x2 +#define SLIM_MSG_MC_REPORT_ABSENT 0xF + /* Clock pause Reconfiguration messages */ #define SLIM_MSG_MC_BEGIN_RECONFIGURATION 0x40 #define SLIM_MSG_MC_NEXT_PAUSE_CLOCK 0x4A @@ -94,6 +123,10 @@ struct slim_msg_txn { #define DEFINE_SLIM_BCAST_TXN(name, mc, rl, la, msg) \ struct slim_msg_txn name = { rl, 0, mc, SLIM_MSG_DEST_BROADCAST, 0,\ 0, la, msg, } + +#define DEFINE_SLIM_EDEST_TXN(name, mc, rl, la, msg) \ + struct slim_msg_txn name = { rl, 0, mc, SLIM_MSG_DEST_ENUMADDR, 0,\ + 0, la, msg, } /** * enum slim_clk_state: SLIMbus controller's clock state used internally for * maintaining current clock state. |