linux-kernel - [PATCH v2 2/3] bus: mhi: core: Move MHI_MAX

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Date:   Thu, 21 May 2020 19:51:29 -0700
From:   Hemant Kumar <hemantk@...eaurora.org>
To:     manivannan.sadhasivam@...aro.org
Cc:     linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        jhugo@...eaurora.org, bbhatt@...eaurora.org,
        Hemant Kumar <hemantk@...eaurora.org>
Subject: [PATCH v2 2/3] bus: mhi: core: Move MHI_MAX_MTU to external header file

Currently this macro is defined in internal MHI header as
a TRE length mask. Moving it to external header allows MHI
client drivers to set this upper bound for the transmit
buffer size.

Signed-off-by: Hemant Kumar <hemantk@...eaurora.org>
---
 include/linux/mhi.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/linux/mhi.h b/include/linux/mhi.h
index a39b77d..ce43f74 100644
--- a/include/linux/mhi.h
+++ b/include/linux/mhi.h
@@ -16,6 +16,9 @@
 #include <linux/wait.h>
 #include <linux/workqueue.h>
 
+/* MHI client drivers to set this upper bound for tx buffer */
+#define MHI_MAX_MTU 0xffff
+
 #define MHI_VOTE_BUS BIT(0) /* do not disable the mhi bus */
 #define MHI_VOTE_DEVICE BIT(1) /* prevent mhi device from entering lpm */
 
-- 
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