From: Vladimir Stankovic <vladimir.stankovic@displaylink.com>
To: gregkh@linuxfoundation.org
Cc: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
mausb-host-devel@displaylink.com
Subject: [PATCH v6 1/8] usb: Add MA-USB Host kernel module
Date: Fri, 15 May 2020 14:34:55 +0200 [thread overview]
Message-ID: <20200515123502.12099-2-vladimir.stankovic@displaylink.com> (raw)
In-Reply-To: <20200515123502.12099-1-vladimir.stankovic@displaylink.com>
Added utility macros, kernel device creation and cleanup, functions for
handling log formatting and a placeholder module for MA-USB Host device
driver.
Signed-off-by: Vladimir Stankovic <vladimir.stankovic@displaylink.com>
---
MAINTAINERS | 7 +++++
drivers/usb/Kconfig | 2 ++
drivers/usb/Makefile | 1 +
drivers/usb/host/mausb/Kconfig | 15 +++++++++
drivers/usb/host/mausb/Makefile | 10 ++++++
drivers/usb/host/mausb/mausb_core.c | 24 +++++++++++++++
drivers/usb/host/mausb/utils.c | 47 +++++++++++++++++++++++++++++
drivers/usb/host/mausb/utils.h | 15 +++++++++
8 files changed, 121 insertions(+)
create mode 100644 drivers/usb/host/mausb/Kconfig
create mode 100644 drivers/usb/host/mausb/Makefile
create mode 100644 drivers/usb/host/mausb/mausb_core.c
create mode 100644 drivers/usb/host/mausb/utils.c
create mode 100644 drivers/usb/host/mausb/utils.h
diff --git a/MAINTAINERS b/MAINTAINERS
index 091ec22c1a23..9b7b79215f47 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -10343,6 +10343,13 @@ W: https://linuxtv.org
T: git git://linuxtv.org/media_tree.git
F: drivers/media/radio/radio-maxiradio*
+MEDIA AGNOSTIC (MA) USB HOST DRIVER
+M: Vladimir Stankovic <vladimir.stankovic@displaylink.com>
+L: mausb-host-devel@displaylink.com
+W: https://www.displaylink.com
+S: Maintained
+F: drivers/usb/host/mausb/*
+
MCAN MMIO DEVICE DRIVER
M: Dan Murphy <dmurphy@ti.com>
M: Sriram Dash <sriram.dash@samsung.com>
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
index 275568abc670..35f5c3ac6656 100644
--- a/drivers/usb/Kconfig
+++ b/drivers/usb/Kconfig
@@ -99,6 +99,8 @@ source "drivers/usb/mon/Kconfig"
source "drivers/usb/host/Kconfig"
+source "drivers/usb/host/mausb/Kconfig"
+
source "drivers/usb/renesas_usbhs/Kconfig"
source "drivers/usb/class/Kconfig"
diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile
index 1c1c1d659394..2389b55723ab 100644
--- a/drivers/usb/Makefile
+++ b/drivers/usb/Makefile
@@ -34,6 +34,7 @@ obj-$(CONFIG_USB_IMX21_HCD) += host/
obj-$(CONFIG_USB_FSL_USB2) += host/
obj-$(CONFIG_USB_FOTG210_HCD) += host/
obj-$(CONFIG_USB_MAX3421_HCD) += host/
+obj-$(CONFIG_USB_HOST_MAUSB) += host/mausb/
obj-$(CONFIG_USB_C67X00_HCD) += c67x00/
diff --git a/drivers/usb/host/mausb/Kconfig b/drivers/usb/host/mausb/Kconfig
new file mode 100644
index 000000000000..ba72ef42f942
--- /dev/null
+++ b/drivers/usb/host/mausb/Kconfig
@@ -0,0 +1,15 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Kernel configuration file for MA-USB Host driver.
+#
+# Copyright (c) 2019 - 2020 DisplayLink (UK) Ltd.
+#
+
+config USB_HOST_MAUSB
+ tristate "Media Agnostic (MA) USB Host Driver"
+ depends on USB=y
+ help
+ This is a Media Agnostic (MA) USB Host driver which enables host
+ communication via MA USB protocol stack.
+
+ If this driver is compiled as a module, it will be named mausb_host.
diff --git a/drivers/usb/host/mausb/Makefile b/drivers/usb/host/mausb/Makefile
new file mode 100644
index 000000000000..cafccac0edba
--- /dev/null
+++ b/drivers/usb/host/mausb/Makefile
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for DisplayLink MA-USB Host driver.
+#
+# Copyright (c) 2019 - 2020 DisplayLink (UK) Ltd.
+#
+
+obj-$(CONFIG_USB_HOST_MAUSB) += mausb_host.o
+mausb_host-y := mausb_core.o
+mausb_host-y += utils.o
diff --git a/drivers/usb/host/mausb/mausb_core.c b/drivers/usb/host/mausb/mausb_core.c
new file mode 100644
index 000000000000..44f76a1b74de
--- /dev/null
+++ b/drivers/usb/host/mausb/mausb_core.c
@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2019 - 2020 DisplayLink (UK) Ltd.
+ */
+#include <linux/module.h>
+
+#include "utils.h"
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("DisplayLink (UK) Ltd.");
+
+static int mausb_host_init(void)
+{
+ return mausb_host_dev_register();
+}
+
+static void mausb_host_exit(void)
+{
+ dev_info(mausb_host_dev.this_device, "Module unloading started...");
+ mausb_host_dev_deregister();
+}
+
+module_init(mausb_host_init);
+module_exit(mausb_host_exit);
diff --git a/drivers/usb/host/mausb/utils.c b/drivers/usb/host/mausb/utils.c
new file mode 100644
index 000000000000..1cfa2140311e
--- /dev/null
+++ b/drivers/usb/host/mausb/utils.c
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2019 - 2020 DisplayLink (UK) Ltd.
+ */
+#include "utils.h"
+
+#include <linux/fs.h>
+#include <linux/slab.h>
+
+#define MAUSB_KERNEL_DEV_NAME "mausb_host"
+#define MAUSB_READ_DEVICE_TIMEOUT_MS 500
+
+struct miscdevice mausb_host_dev;
+
+static int mausb_host_dev_open(struct inode *inode, struct file *filp)
+{
+ filp->private_data = NULL;
+
+ return 0;
+}
+
+static int mausb_host_dev_release(struct inode *inode, struct file *filp)
+{
+ kfree(filp->private_data);
+ filp->private_data = NULL;
+
+ return 0;
+}
+
+static const struct file_operations mausb_host_dev_fops = {
+ .open = mausb_host_dev_open,
+ .release = mausb_host_dev_release,
+};
+
+int mausb_host_dev_register(void)
+{
+ mausb_host_dev.minor = MISC_DYNAMIC_MINOR;
+ mausb_host_dev.name = MAUSB_KERNEL_DEV_NAME;
+ mausb_host_dev.fops = &mausb_host_dev_fops;
+ mausb_host_dev.mode = 0;
+ return misc_register(&mausb_host_dev);
+}
+
+void mausb_host_dev_deregister(void)
+{
+ misc_deregister(&mausb_host_dev);
+}
diff --git a/drivers/usb/host/mausb/utils.h b/drivers/usb/host/mausb/utils.h
new file mode 100644
index 000000000000..e810e691c39d
--- /dev/null
+++ b/drivers/usb/host/mausb/utils.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2019 - 2020 DisplayLink (UK) Ltd.
+ */
+#ifndef __MAUSB_UTILS_H__
+#define __MAUSB_UTILS_H__
+
+#include <linux/miscdevice.h>
+
+extern struct miscdevice mausb_host_dev;
+
+int mausb_host_dev_register(void);
+void mausb_host_dev_deregister(void);
+
+#endif /* __MAUSB_UTILS_H__ */
--
2.17.1
next prev parent reply other threads:[~2020-05-15 12:35 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-12 14:42 [PATCH v3 0/8] Add MA USB Host driver Vladimir Stankovic
2020-03-27 15:26 ` [PATCH v4 " vladimir.stankovic
2020-03-27 15:26 ` [PATCH v4 1/8] usb: Add MA-USB Host kernel module vladimir.stankovic
2020-03-27 16:25 ` Alan Stern
2020-03-27 15:26 ` [PATCH v4 2/8] usb: mausb_host: Add link layer implementation vladimir.stankovic
2020-03-27 15:26 ` [PATCH v4 3/8] usb: mausb_host: HCD initialization vladimir.stankovic
2020-03-27 15:26 ` [PATCH v4 4/8] usb: mausb_host: Implement initial hub handlers vladimir.stankovic
2020-03-27 16:37 ` Alan Stern
2020-04-13 15:16 ` Vladimir Stankovic
2020-03-27 15:26 ` [PATCH v4 5/8] usb: mausb_host: Introduce PAL processing vladimir.stankovic
2020-03-27 16:35 ` Alan Stern
2020-03-28 3:56 ` kbuild test robot
2020-03-27 15:26 ` [PATCH v4 6/8] usb: mausb_host: Add logic for PAL-to-PAL communication vladimir.stankovic
2020-03-27 15:26 ` [PATCH v4 7/8] usb: mausb_host: MA-USB PAL events processing vladimir.stankovic
2020-03-28 10:35 ` kbuild test robot
2020-04-04 16:07 ` kbuild test robot
2020-03-27 15:26 ` [PATCH v4 8/8] usb: mausb_host: Process MA-USB data packets vladimir.stankovic
2020-04-25 9:19 ` [PATCH v5 0/8] Add MA USB Host driver vladimir.stankovic
2020-04-25 9:19 ` [PATCH v5 1/8] usb: Add MA-USB Host kernel module vladimir.stankovic
2020-04-28 11:03 ` Greg KH
2020-04-25 9:19 ` [PATCH v5 2/8] usb: mausb_host: Add link layer implementation vladimir.stankovic
2020-04-25 9:19 ` [PATCH v5 3/8] usb: mausb_host: HCD initialization vladimir.stankovic
2020-04-28 11:07 ` Greg KH
2020-04-25 9:19 ` [PATCH v5 4/8] usb: mausb_host: Implement initial hub handlers vladimir.stankovic
2020-04-25 9:19 ` [PATCH v5 5/8] usb: mausb_host: Introduce PAL processing vladimir.stankovic
2020-04-26 0:32 ` Alan Stern
2020-04-26 12:32 ` Vladimir Stankovic
2020-04-26 14:31 ` Alan Stern
2020-04-26 14:45 ` [External] " Vladimir Stankovic
2020-04-26 20:56 ` Alan Stern
2020-04-30 14:37 ` Vladimir Stankovic
2020-04-30 15:18 ` Alan Stern
2020-04-30 15:34 ` Vladimir Stankovic
2020-04-30 15:41 ` Alan Stern
2020-04-25 9:19 ` [PATCH v5 6/8] usb: mausb_host: Add logic for PAL-to-PAL communication vladimir.stankovic
2020-04-25 9:19 ` [PATCH v5 7/8] usb: mausb_host: MA-USB PAL events processing vladimir.stankovic
2020-04-28 11:08 ` Greg KH
2020-04-25 9:19 ` [PATCH v5 8/8] usb: mausb_host: Process MA-USB data packets vladimir.stankovic
2020-04-28 11:04 ` [PATCH v5 0/8] Add MA USB Host driver Greg KH
2020-04-30 16:51 ` [External] " Vladimir Stankovic
2020-04-30 20:02 ` Greg KH
2020-05-15 13:04 ` Vladimir Stankovic
2020-05-29 12:48 ` Pavel Machek
2020-05-15 12:34 ` [PATCH v6 " Vladimir Stankovic
2020-05-15 12:34 ` Vladimir Stankovic [this message]
2020-05-15 13:01 ` [PATCH v6 1/8] usb: Add MA-USB Host kernel module Greg KH
2020-06-11 18:20 ` Vladimir Stankovic
2020-05-15 13:02 ` Greg KH
2020-06-11 18:19 ` [External] " Vladimir Stankovic
2020-05-15 12:34 ` [PATCH v6 2/8] usb: mausb_host: Add link layer implementation Vladimir Stankovic
2020-05-15 12:34 ` [PATCH v6 3/8] usb: mausb_host: HCD initialization Vladimir Stankovic
2020-05-15 13:03 ` Greg KH
2020-06-11 18:19 ` Vladimir Stankovic
2020-05-15 13:07 ` Greg KH
2020-06-11 18:18 ` [External] " Vladimir Stankovic
2020-06-18 8:18 ` Greg KH
2020-05-15 12:34 ` [PATCH v6 4/8] usb: mausb_host: Implement initial hub handlers Vladimir Stankovic
2020-05-15 12:34 ` [PATCH v6 5/8] usb: mausb_host: Introduce PAL processing Vladimir Stankovic
2020-05-15 12:35 ` [PATCH v6 6/8] usb: mausb_host: Add logic for PAL-to-PAL communication Vladimir Stankovic
2020-05-15 12:35 ` [PATCH v6 7/8] usb: mausb_host: MA-USB PAL events processing Vladimir Stankovic
2020-05-15 12:35 ` [PATCH v6 8/8] usb: mausb_host: Process MA-USB data packets Vladimir Stankovic
2020-05-15 13:08 ` [PATCH v6 0/8] Add MA USB Host driver Greg KH
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