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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>
This commit is contained in:
Srinivas Kandagatla 2017-12-11 23:43:03 +00:00 committed by Greg Kroah-Hartman
parent 7d6f7fb053
commit ce96188b12
1 changed files with 33 additions and 0 deletions
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33
drivers/slimbus/slimbus.h
View File

@ -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.