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Commit ce96188b authored by Srinivas Kandagatla's avatar Srinivas Kandagatla Committed by Greg Kroah-Hartman
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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: default avatarSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviwed-by: default avatarMark Brown <broonie@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 7d6f7fb0

drivers/slimbus/slimbus.h

+33 −0
Original line number Diff line number Diff line
@@ -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.