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Message-Id: <20200820182639.11572-2-yung-chuan.liao@linux.intel.com>
Date:   Fri, 21 Aug 2020 02:26:37 +0800
From:   Bard Liao <yung-chuan.liao@...ux.intel.com>
To:     alsa-devel@...a-project.org, vkoul@...nel.org
Cc:     vinod.koul@...aro.org, linux-kernel@...r.kernel.org, tiwai@...e.de,
        broonie@...nel.org, gregkh@...uxfoundation.org, jank@...ence.com,
        srinivas.kandagatla@...aro.org, rander.wang@...ux.intel.com,
        ranjani.sridharan@...ux.intel.com, hui.wang@...onical.com,
        pierre-louis.bossart@...ux.intel.com, sanyog.r.kale@...el.com,
        mengdong.lin@...el.com, bard.liao@...el.com
Subject: [PATCH v2 1/3] soundwire: add definition for maximum number of ports

From: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>

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

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Reviewed-by: Rander Wang <rander.wang@...ux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@...ux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@...ux.intel.com>
---
 include/linux/soundwire/sdw.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h
index 76052f12c9f7..0aa4c6af7554 100644
--- a/include/linux/soundwire/sdw.h
+++ b/include/linux/soundwire/sdw.h
@@ -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,
-- 
2.17.1

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