linux-kernel - [PATCH V4 1/9] platform/x86/intel/sdsi: Set message size during writes

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Message-Id: <20240411025856.2782476-2-david.e.box@linux.intel.com>
Date: Wed, 10 Apr 2024 19:58:48 -0700
From: "David E. Box" <david.e.box@...ux.intel.com>
To: david.e.box@...ux.intel.com,
	hdegoede@...hat.com,
	ilpo.jarvinen@...ux.intel.com,
	platform-driver-x86@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	sathyanarayanan.kuppuswamy@...ux.intel.com
Subject: [PATCH V4 1/9] platform/x86/intel/sdsi: Set message size during writes

New mailbox commands will support sending multi packet writes and updated
firmware now requires that the message size be written for all commands
along with the packet size. Since the driver doesn't perform writes larger
than the packet size, set the message size to the same value.

Signed-off-by: David E. Box <david.e.box@...ux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
---

V4 - no changes
V3 - no changes
V2 - no changes

 drivers/platform/x86/intel/sdsi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/platform/x86/intel/sdsi.c b/drivers/platform/x86/intel/sdsi.c
index 556e7c6dbb05..a70c071de6e2 100644
--- a/drivers/platform/x86/intel/sdsi.c
+++ b/drivers/platform/x86/intel/sdsi.c
@@ -252,6 +252,7 @@ static int sdsi_mbox_cmd_write(struct sdsi_priv *priv, struct sdsi_mbox_info *in
 		  FIELD_PREP(CTRL_SOM, 1) |
 		  FIELD_PREP(CTRL_RUN_BUSY, 1) |
 		  FIELD_PREP(CTRL_READ_WRITE, 1) |
+		  FIELD_PREP(CTRL_MSG_SIZE, info->size) |
 		  FIELD_PREP(CTRL_PACKET_SIZE, info->size);
 	writeq(control, priv->control_addr);
 
-- 
2.34.1