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From:   Hemant Kumar <hemantk@codeaurora.org>
To:     manivannan.sadhasivam@linaro.org, gregkh@linuxfoundation.org
Cc:     linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
        jhugo@codeaurora.org, bbhatt@codeaurora.org,
        loic.poulain@linaro.org, Hemant Kumar <hemantk@codeaurora.org>
Subject: [PATCH v7 2/4] bus: mhi: core: Move MHI_MAX_MTU to external header file
Date:   Fri, 16 Oct 2020 21:04:15 -0700
Message-Id: <1602907457-13680-3-git-send-email-hemantk@codeaurora.org>
In-Reply-To: <1602907457-13680-1-git-send-email-hemantk@codeaurora.org>
References: <1602907457-13680-1-git-send-email-hemantk@codeaurora.org>
Precedence: bulk

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@codeaurora.org>
Reviewed-by: Jeffrey Hugo <jhugo@codeaurora.org>
---
 drivers/bus/mhi/core/internal.h | 1 -
 include/linux/mhi.h             | 3 +++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/bus/mhi/core/internal.h b/drivers/bus/mhi/core/internal.h
index 7989269..4abf0cf 100644
--- a/drivers/bus/mhi/core/internal.h
+++ b/drivers/bus/mhi/core/internal.h
@@ -453,7 +453,6 @@ enum mhi_pm_state {
 #define CMD_EL_PER_RING			128
 #define PRIMARY_CMD_RING		0
 #define MHI_DEV_WAKE_DB			127
-#define MHI_MAX_MTU			0xffff
 #define MHI_RANDOM_U32_NONZERO(bmsk)	(prandom_u32_max(bmsk) + 1)
 
 enum mhi_er_type {
diff --git a/include/linux/mhi.h b/include/linux/mhi.h
index 7829b1d..6e1122c 100644
--- a/include/linux/mhi.h
+++ b/include/linux/mhi.h
@@ -15,6 +15,9 @@
 #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_MAX_OEM_PK_HASH_SEGMENTS 16
 
 struct mhi_chan;
-- 
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