linux-kernel - [PATCH net-next v2] net: wwan: Add WWAN sahara port type

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Message-Id: <20241120093904.8629-1-jerry.meng.lk@quectel.com>
Date: Wed, 20 Nov 2024 17:39:04 +0800
From: Jerry Meng <jerry.meng.lk@...ctel.com>
To: ryazanov.s.a@...il.com,
	loic.poulain@...aro.org
Cc: netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Jerry Meng <jerry.meng.lk@...ctel.com>
Subject: [PATCH net-next v2] net: wwan: Add WWAN sahara port type

Add a Sahara protocol-based interface for downloading ramdump
from Qualcomm modems in SBL ramdump mode.

Signed-off-by: Jerry Meng <jerry.meng.lk@...ctel.com>
---
v1 -> v2:
	- Fix errors checked by checkpatch.pl, mainly change indentation from space to tab
	- change my email acount to fit git-send-email

 drivers/net/wwan/mhi_wwan_ctrl.c | 1 +
 drivers/net/wwan/wwan_core.c     | 4 ++++
 include/linux/wwan.h             | 2 ++
 3 files changed, 7 insertions(+)

diff --git a/drivers/net/wwan/mhi_wwan_ctrl.c b/drivers/net/wwan/mhi_wwan_ctrl.c
index e9f979d2d..082090ae5 100644
--- a/drivers/net/wwan/mhi_wwan_ctrl.c
+++ b/drivers/net/wwan/mhi_wwan_ctrl.c
@@ -263,6 +263,7 @@ static const struct mhi_device_id mhi_wwan_ctrl_match_table[] = {
 	{ .chan = "QMI", .driver_data = WWAN_PORT_QMI },
 	{ .chan = "DIAG", .driver_data = WWAN_PORT_QCDM },
 	{ .chan = "FIREHOSE", .driver_data = WWAN_PORT_FIREHOSE },
+	{ .chan = "SAHARA", .driver_data = WWAN_PORT_SAHARA},
 	{},
 };
 MODULE_DEVICE_TABLE(mhi, mhi_wwan_ctrl_match_table);
diff --git a/drivers/net/wwan/wwan_core.c b/drivers/net/wwan/wwan_core.c
index a51e27559..5eb0d6de3 100644
--- a/drivers/net/wwan/wwan_core.c
+++ b/drivers/net/wwan/wwan_core.c
@@ -342,6 +342,10 @@ static const struct {
 		.name = "MIPC",
 		.devsuf = "mipc",
 	},
+	[WWAN_PORT_SAHARA] = {
+		.name = "SAHARA",
+		.devsuf = "sahara",
+	},
 };
 
 static ssize_t type_show(struct device *dev, struct device_attribute *attr,
diff --git a/include/linux/wwan.h b/include/linux/wwan.h
index 79c781875..b0ea276f2 100644
--- a/include/linux/wwan.h
+++ b/include/linux/wwan.h
@@ -19,6 +19,7 @@
  * @WWAN_PORT_FASTBOOT: Fastboot protocol control
  * @WWAN_PORT_ADB: ADB protocol control
  * @WWAN_PORT_MIPC: MTK MIPC diagnostic interface
+ * @WWAN_PORT_SAHARA: Sahara protocol-based interface for downloading ramdump from Qualcomm modems
  *
  * @WWAN_PORT_MAX: Highest supported port types
  * @WWAN_PORT_UNKNOWN: Special value to indicate an unknown port type
@@ -34,6 +35,7 @@ enum wwan_port_type {
 	WWAN_PORT_FASTBOOT,
 	WWAN_PORT_ADB,
 	WWAN_PORT_MIPC,
+	WWAN_PORT_SAHARA,
 
 	/* Add new port types above this line */
 
-- 
2.25.1