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From: M Chetan Kumar <m.chetan.kumar@intel.com>
To: netdev@vger.kernel.org, linux-wireless@vger.kernel.org
Cc: johannes@sipsolutions.net, krishna.c.sudi@intel.com,
	m.chetan.kumar@intel.com
Subject: [PATCH 15/18] net: iosm: uevent support
Date: Thu,  7 Jan 2021 22:35:20 +0530	[thread overview]
Message-ID: <20210107170523.26531-16-m.chetan.kumar@intel.com> (raw)
In-Reply-To: <20210107170523.26531-1-m.chetan.kumar@intel.com>

Report modem status via uevent.

Signed-off-by: M Chetan Kumar <m.chetan.kumar@intel.com>
---
 drivers/net/wwan/iosm/iosm_ipc_uevent.c | 43 +++++++++++++++++++++++++++++++++
 drivers/net/wwan/iosm/iosm_ipc_uevent.h | 41 +++++++++++++++++++++++++++++++
 2 files changed, 84 insertions(+)
 create mode 100644 drivers/net/wwan/iosm/iosm_ipc_uevent.c
 create mode 100644 drivers/net/wwan/iosm/iosm_ipc_uevent.h

diff --git a/drivers/net/wwan/iosm/iosm_ipc_uevent.c b/drivers/net/wwan/iosm/iosm_ipc_uevent.c
new file mode 100644
index 000000000000..9040ee6f6065
--- /dev/null
+++ b/drivers/net/wwan/iosm/iosm_ipc_uevent.c
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2020 Intel Corporation.
+ */
+
+#include <linux/slab.h>
+
+#include "iosm_ipc_sio.h"
+#include "iosm_ipc_uevent.h"
+
+/* Update the uevent in work queue context */
+static void ipc_uevent_work(struct work_struct *data)
+{
+	struct ipc_uevent_info *info;
+	char *envp[2] = { NULL, NULL };
+
+	info = container_of(data, struct ipc_uevent_info, work);
+
+	envp[0] = info->uevent;
+
+	if (kobject_uevent_env(&info->dev->kobj, KOBJ_CHANGE, envp))
+		pr_err("uevent %s failed to sent", info->uevent);
+
+	kfree(info);
+}
+
+void ipc_uevent_send(struct device *dev, char *uevent)
+{
+	struct ipc_uevent_info *info = kzalloc(sizeof(*info), GFP_ATOMIC);
+
+	if (!info)
+		return;
+
+	/* Initialize the kernel work queue */
+	INIT_WORK(&info->work, ipc_uevent_work);
+
+	/* Store the device and event information */
+	info->dev = dev;
+	snprintf(info->uevent, MAX_UEVENT_LEN, "%s: %s", dev_name(dev), uevent);
+
+	/* Schedule uevent in process context using work queue */
+	schedule_work(&info->work);
+}
diff --git a/drivers/net/wwan/iosm/iosm_ipc_uevent.h b/drivers/net/wwan/iosm/iosm_ipc_uevent.h
new file mode 100644
index 000000000000..422f64411c6e
--- /dev/null
+++ b/drivers/net/wwan/iosm/iosm_ipc_uevent.h
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: GPL-2.0-only
+ *
+ * Copyright (C) 2020 Intel Corporation.
+ */
+
+#ifndef IOSM_IPC_UEVENT_H
+#define IOSM_IPC_UEVENT_H
+
+/* Baseband event strings */
+#define UEVENT_MDM_NOT_READY "MDM_NOT_READY"
+#define UEVENT_ROM_READY "ROM_READY"
+#define UEVENT_MDM_READY "MDM_READY"
+#define UEVENT_CRASH "CRASH"
+#define UEVENT_CD_READY "CD_READY"
+#define UEVENT_CD_READY_LINK_DOWN "CD_READY_LINK_DOWN"
+#define UEVENT_MDM_TIMEOUT "MDM_TIMEOUT"
+
+/* Maximum length of user events */
+#define MAX_UEVENT_LEN 64
+
+/**
+ * struct ipc_uevent_info - Uevent information structure.
+ * @dev:	Pointer to device structure
+ * @uevent:	Uevent information
+ * @work:	Uevent work struct
+ */
+struct ipc_uevent_info {
+	struct device *dev;
+	char uevent[MAX_UEVENT_LEN];
+	struct work_struct work;
+};
+
+/**
+ * ipc_uevent_send - Send modem event to user space.
+ * @dev:	Generic device pointer
+ * @uevent:	Uevent information
+ *
+ */
+void ipc_uevent_send(struct device *dev, char *uevent);
+
+#endif
-- 
2.12.3


  parent reply	other threads:[~2021-01-07 17:07 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-07 17:05 [PATCH 00/18] net: iosm: PCIe Driver for Intel M.2 Modem M Chetan Kumar
2021-01-07 17:05 ` [PATCH 01/18] net: iosm: entry point M Chetan Kumar
2021-01-07 17:05 ` [PATCH 02/18] net: iosm: irq handling M Chetan Kumar
2021-01-07 17:05 ` [PATCH 03/18] net: iosm: mmio scratchpad M Chetan Kumar
2021-01-07 17:05 ` [PATCH 04/18] net: iosm: shared memory IPC interface M Chetan Kumar
2021-01-07 17:05 ` [PATCH 05/18] net: iosm: shared memory I/O operations M Chetan Kumar
2021-01-07 17:05 ` [PATCH 06/18] net: iosm: channel configuration M Chetan Kumar
2021-01-07 17:05 ` [PATCH 07/18] net: iosm: char device for FW flash & coredump M Chetan Kumar
2021-01-07 19:35   ` Andrew Lunn
2021-01-07 17:05 ` [PATCH 08/18] net: iosm: MBIM control device M Chetan Kumar
2021-01-07 17:05 ` [PATCH 09/18] net: iosm: bottom half M Chetan Kumar
2021-01-07 17:05 ` [PATCH 10/18] net: iosm: multiplex IP sessions M Chetan Kumar
2021-01-07 17:05 ` [PATCH 11/18] net: iosm: encode or decode datagram M Chetan Kumar
2021-01-07 21:56   ` Andrew Lunn
2021-01-07 17:05 ` [PATCH 12/18] net: iosm: power management M Chetan Kumar
2021-01-07 17:05 ` [PATCH 13/18] net: iosm: shared memory protocol M Chetan Kumar
2021-01-07 17:05 ` [PATCH 14/18] net: iosm: protocol operations M Chetan Kumar
2021-01-07 17:05 ` M Chetan Kumar [this message]
2021-01-07 17:05 ` [PATCH 16/18] net: iosm: net driver M Chetan Kumar
2021-01-07 20:11   ` Andrew Lunn
2021-01-07 17:05 ` [PATCH 17/18] net: iosm: readme file M Chetan Kumar
2021-01-07 22:23   ` Andrew Lunn
2021-01-15  9:15     ` Johannes Berg
2021-01-17 17:26     ` Bjørn Mork
2021-01-20 19:34       ` Andrew Lunn
2021-01-20 23:32         ` Jakub Kicinski
2021-01-21  1:34           ` Dan Williams
2021-01-22 23:45             ` Andrew Lunn
2021-01-07 17:05 ` [PATCH 18/18] net: iosm: infrastructure M Chetan Kumar

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