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soundwire: add definition for maximum number of ports 

A Device may have at most 15 physical ports (DP0, DP1..DP14).

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Link: https://lore.kernel.org/r/20200831134318.11443-3-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Pierre-Louis Bossart 2020-08-31 21:43:17 +08:00 committed by Vinod Koul
parent d0bbcb4e83
commit 63642595a7
1 changed files with 2 additions and 1 deletions
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3
include/linux/soundwire/sdw.h
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@ -38,7 +38,8 @@ struct sdw_slave;
#define SDW_FRAME_CTRL_BITS 48
#define SDW_MAX_DEVICES 11
#define SDW_VALID_PORT_RANGE(n) ((n) <= 14 && (n) >= 1)
#define SDW_MAX_PORTS 15
#define SDW_VALID_PORT_RANGE(n) ((n) < SDW_MAX_PORTS && (n) >= 1)
enum {
SDW_PORT_DIRN_SINK = 0,