[PATCH v4 1/5] usb: phy: samsung: Introducing usb phy driver for hsotg

On Fri, Aug 10, 2012 at 12:49 PM, ABRAHAM, KISHON VIJAY [off-list ref] wrote:

Hi,

On Fri, Aug 10, 2012 at 12:40 PM, Praveen Paneri [off-list ref] wrote:

quoted

This driver uses usb_phy interface to interact with s3c-hsotg. Supports
phy_init and phy_shutdown functions to enable/disable phy. Tested with
smdk6410 and smdkv310. More SoCs can be brought under later.

Signed-off-by: Praveen Paneri <redacted>
Acked-by: Heiko Stuebner <heiko@sntech.de>
---
 .../devicetree/bindings/usb/samsung-usbphy.txt     |    9 +
 drivers/usb/phy/Kconfig                            |    8 +
 drivers/usb/phy/Makefile                           |    1 +
 drivers/usb/phy/samsung-usbphy.c                   |  345 ++++++++++++++++++++
 drivers/usb/phy/samsung-usbphy.h                   |   48 +++
 include/linux/platform_data/samsung-usbphy.h       |   27 ++
 6 files changed, 438 insertions(+), 0 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/usb/samsung-usbphy.txt
 create mode 100644 drivers/usb/phy/samsung-usbphy.c
 create mode 100644 drivers/usb/phy/samsung-usbphy.h
 create mode 100644 include/linux/platform_data/samsung-usbphy.h

diff --git a/Documentation/devicetree/bindings/usb/samsung-usbphy.txt b/Documentation/devicetree/bindings/usb/samsung-usbphy.txt
new file mode 100644
index 0000000..fefd9c8
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/samsung-usbphy.txt

@@ -0,0 +1,9 @@
+* Samsung's usb phy transceiver
+
+The Samsung's phy transceiver is used for controlling usb otg phy for
+s3c-hsotg usb device controller.
+
+Required properties:
+- compatible : should be "samsung,exynos4210-usbphy"
+- reg : base physical address of the phy registers and length of memory mapped
+       region.

diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig
index e7cf84f..d916477 100644
--- a/drivers/usb/phy/Kconfig
+++ b/drivers/usb/phy/Kconfig

@@ -15,3 +15,11 @@ config USB_ISP1301

          To compile this driver as a module, choose M here: the
          module will be called isp1301.
+
+config SAMSUNG_USBPHY
+       bool "Samsung USB PHY controller Driver"
+       depends on USB_S3C_HSOTG
+       select USB_OTG_UTILS
+       help
+         Enable this to support Samsung USB phy controller for samsung
+         SoCs.

diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile
index eca095b..dfca70d 100644
--- a/drivers/usb/phy/Makefile
+++ b/drivers/usb/phy/Makefile

@@ -5,3 +5,4 @@
 ccflags-$(CONFIG_USB_DEBUG) := -DDEBUG

 obj-$(CONFIG_USB_ISP1301)              += isp1301.o
+obj-$(CONFIG_SAMSUNG_USBPHY)           += samsung-usbphy.o

diff --git a/drivers/usb/phy/samsung-usbphy.c b/drivers/usb/phy/samsung-usbphy.c
new file mode 100644
index 0000000..739b6c9
--- /dev/null
+++ b/drivers/usb/phy/samsung-usbphy.c

@@ -0,0 +1,345 @@
+/* linux/drivers/usb/phy/samsung-usbphy.c
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com
+ *
+ * Author: Praveen Paneri <p.paneri@samsung.com>
+ *
+ * Samsung USB2.0 High-speed OTG transceiver, talks to S3C HS OTG controller
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

I suggest you drop that last paragraph unless you want to keep track
of Free Software Foundation office. Right now it is 51 Franklin
Street, Boston (http://www.fsf.org/about/contact/) :-)

Yeah! it can be dropped :-)

Praveen

-Kishon
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