[PATCH v10 09/13] slimbus: core: add common defines required for controllers

srinivas.kandagatla
2017-12-11T23:45:25Z

From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

This patch adds some common constant defines which are required
for qcom slim controller driver.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
drivers/slimbus/slimbus.h | 33 +++++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)

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.
--
2.15.0