[thirdparty/openembedded/openembedded-core-contrib.git] /

From d96b241bd2ad42b6c49d5f6435c69b23818f001e Mon Sep 17 00:00:00 2001
From: Felipe Balbi <felipe.balbi@nokia.com>
Date: Tue, 5 Jan 2010 16:10:13 +0200
Subject: [PATCH 9/10] USB: gadget: introduce g_nokia gadget driver

Patch-mainline: 2.6.34
Git-commit: f358f5b40af67caf28b627889d007294614170b2

g_nokia is the gadget driver implementing
WMCDC Wireless Handset Control Model for the N900
device.

Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/usb/gadget/Kconfig  |   10 +
 drivers/usb/gadget/Makefile |    2 
 drivers/usb/gadget/nokia.c  |  259 ++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 271 insertions(+)
 create mode 100644 drivers/usb/gadget/nokia.c

--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -828,6 +828,16 @@
          Say "y" to link the driver statically, or "m" to build a
          dynamically linked module.
 
+config USB_G_NOKIA
+       tristate "Nokia composite gadget"
+       depends on PHONET
+       help
+         The Nokia composite gadget provides support for acm, obex
+         and phonet in only one composite gadget driver.
+
+         It's only really useful for N900 hardware. If you're building
+         a kernel for N900, say Y or M here. If unsure, say N.
+
 config USB_G_MULTI
        tristate "Multifunction Composite Gadget (EXPERIMENTAL)"
        depends on BLOCK && NET
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -44,6 +44,7 @@
 g_cdc-objs                     := cdc2.o
 g_multi-objs                   := multi.o
 g_still_image-objs             := still_image.o
+g_nokia-objs                   := nokia.o
 
 obj-$(CONFIG_USB_ZERO)         += g_zero.o
 obj-$(CONFIG_USB_AUDIO)                += g_audio.o
@@ -57,6 +58,7 @@
 obj-$(CONFIG_USB_CDC_COMPOSITE) += g_cdc.o
 obj-$(CONFIG_USB_G_MULTI)      += g_multi.o
 obj-$(CONFIG_USB_STILL_IMAGE)  += g_still_image.o
+obj-$(CONFIG_USB_G_NOKIA)      += g_nokia.o
 
 ifeq ($(CONFIG_USB_GADGET_DEBUG),y)
         EXTRA_CFLAGS += -DDMA_PPB_MODE
--- /dev/null
+++ b/drivers/usb/gadget/nokia.c
@@ -0,0 +1,259 @@
+/*
+ * nokia.c -- Nokia Composite Gadget Driver
+ *
+ * Copyright (C) 2008-2010 Nokia Corporation
+ * Contact: Felipe Balbi <felipe.balbi@nokia.com>
+ *
+ * This gadget driver borrows from serial.c which is:
+ *
+ * Copyright (C) 2003 Al Borchers (alborchers@steinerpoint.com)
+ * Copyright (C) 2008 by David Brownell
+ * Copyright (C) 2008 by Nokia Corporation
+ *
+ * This software is distributed under the terms of the GNU General
+ * Public License ("GPL") as published by the Free Software Foundation,
+ * version 2 of that License.
+ */
+
+#include <linux/kernel.h>
+#include <linux/utsname.h>
+#include <linux/device.h>
+
+#include "u_serial.h"
+#include "u_ether.h"
+#include "u_phonet.h"
+#include "gadget_chips.h"
+
+/* Defines */
+
+#define NOKIA_VERSION_NUM              0x0211
+#define NOKIA_LONG_NAME                        "N900 (PC-Suite Mode)"
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * Kbuild is not very cooperative with respect to linking separately
+ * compiled library objects into one module.  So for now we won't use
+ * separate compilation ... ensuring init/exit sections work to shrink
+ * the runtime footprint, and giving us at least some parts of what
+ * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
+ */
+#include "composite.c"
+#include "usbstring.c"
+#include "config.c"
+#include "epautoconf.c"
+
+#include "u_serial.c"
+#include "f_acm.c"
+#include "f_ecm.c"
+#include "f_obex.c"
+#include "f_serial.c"
+#include "f_phonet.c"
+#include "u_ether.c"
+
+/*-------------------------------------------------------------------------*/
+
+#define NOKIA_VENDOR_ID                        0x0421  /* Nokia */
+#define NOKIA_PRODUCT_ID               0x01c8  /* Nokia Gadget */
+
+/* string IDs are assigned dynamically */
+
+#define STRING_MANUFACTURER_IDX                0
+#define STRING_PRODUCT_IDX             1
+#define STRING_DESCRIPTION_IDX         2
+
+static char manufacturer_nokia[] = "Nokia";
+static const char product_nokia[] = NOKIA_LONG_NAME;
+static const char description_nokia[] = "PC-Suite Configuration";
+
+static struct usb_string strings_dev[] = {
+       [STRING_MANUFACTURER_IDX].s = manufacturer_nokia,
+       [STRING_PRODUCT_IDX].s = NOKIA_LONG_NAME,
+       [STRING_DESCRIPTION_IDX].s = description_nokia,
+       {  } /* end of list */
+};
+
+static struct usb_gadget_strings stringtab_dev = {
+       .language       = 0x0409,       /* en-us */
+       .strings        = strings_dev,
+};
+
+static struct usb_gadget_strings *dev_strings[] = {
+       &stringtab_dev,
+       NULL,
+};
+
+static struct usb_device_descriptor device_desc = {
+       .bLength                = USB_DT_DEVICE_SIZE,
+       .bDescriptorType        = USB_DT_DEVICE,
+       .bcdUSB                 = __constant_cpu_to_le16(0x0200),
+       .bDeviceClass           = USB_CLASS_COMM,
+       .idVendor               = __constant_cpu_to_le16(NOKIA_VENDOR_ID),
+       .idProduct              = __constant_cpu_to_le16(NOKIA_PRODUCT_ID),
+       /* .iManufacturer = DYNAMIC */
+       /* .iProduct = DYNAMIC */
+       .bNumConfigurations =   1,
+};
+
+/*-------------------------------------------------------------------------*/
+
+/* Module */
+MODULE_DESCRIPTION("Nokia composite gadget driver for N900");
+MODULE_AUTHOR("Felipe Balbi");
+MODULE_LICENSE("GPL");
+
+/*-------------------------------------------------------------------------*/
+
+static u8 hostaddr[ETH_ALEN];
+
+static int __init nokia_bind_config(struct usb_configuration *c)
+{
+       int status = 0;
+
+       status = phonet_bind_config(c);
+       if (status)
+               printk(KERN_DEBUG "could not bind phonet config\n");
+
+       status = obex_bind_config(c, 0);
+       if (status)
+               printk(KERN_DEBUG "could not bind obex config %d\n", 0);
+
+       status = obex_bind_config(c, 1);
+       if (status)
+               printk(KERN_DEBUG "could not bind obex config %d\n", 0);
+
+       status = acm_bind_config(c, 2);
+       if (status)
+               printk(KERN_DEBUG "could not bind acm config\n");
+
+       status = ecm_bind_config(c, hostaddr);
+       if (status)
+               printk(KERN_DEBUG "could not bind ecm config\n");
+
+       return status;
+}
+
+static struct usb_configuration nokia_config_500ma_driver = {
+       .label          = "Bus Powered",
+       .bind           = nokia_bind_config,
+       .bConfigurationValue = 1,
+       /* .iConfiguration = DYNAMIC */
+       .bmAttributes   = USB_CONFIG_ATT_ONE,
+       .bMaxPower      = 250, /* 500mA */
+};
+
+static struct usb_configuration nokia_config_100ma_driver = {
+       .label          = "Self Powered",
+       .bind           = nokia_bind_config,
+       .bConfigurationValue = 2,
+       /* .iConfiguration = DYNAMIC */
+       .bmAttributes   = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER,
+       .bMaxPower      = 50, /* 100 mA */
+};
+
+static int __init nokia_bind(struct usb_composite_dev *cdev)
+{
+       int                     gcnum;
+       struct usb_gadget       *gadget = cdev->gadget;
+       int                     status;
+
+       status = gphonet_setup(cdev->gadget);
+       if (status < 0)
+               goto err_phonet;
+
+       status = gserial_setup(cdev->gadget, 3);
+       if (status < 0)
+               goto err_serial;
+
+       status = gether_setup(cdev->gadget, hostaddr);
+       if (status < 0)
+               goto err_ether;
+
+       status = usb_string_id(cdev);
+       if (status < 0)
+               goto err_usb;
+       strings_dev[STRING_MANUFACTURER_IDX].id = status;
+
+       device_desc.iManufacturer = status;
+
+       status = usb_string_id(cdev);
+       if (status < 0)
+               goto err_usb;
+       strings_dev[STRING_PRODUCT_IDX].id = status;
+
+       device_desc.iProduct = status;
+
+       /* config description */
+       status = usb_string_id(cdev);
+       if (status < 0)
+               goto err_usb;
+       strings_dev[STRING_DESCRIPTION_IDX].id = status;
+
+       nokia_config_500ma_driver.iConfiguration = status;
+       nokia_config_100ma_driver.iConfiguration = status;
+
+       /* set up other descriptors */
+       gcnum = usb_gadget_controller_number(gadget);
+       if (gcnum >= 0)
+               device_desc.bcdDevice = cpu_to_le16(NOKIA_VERSION_NUM);
+       else {
+               /* this should only work with hw that supports altsettings
+                * and several endpoints, anything else, panic.
+                */
+               pr_err("nokia_bind: controller '%s' not recognized\n",
+                       gadget->name);
+               goto err_usb;
+       }
+
+       /* finaly register the configuration */
+       status = usb_add_config(cdev, &nokia_config_500ma_driver);
+       if (status < 0)
+               goto err_usb;
+
+       status = usb_add_config(cdev, &nokia_config_100ma_driver);
+       if (status < 0)
+               goto err_usb;
+
+       dev_info(&gadget->dev, "%s\n", NOKIA_LONG_NAME);
+
+       return 0;
+
+err_usb:
+       gether_cleanup();
+err_ether:
+       gserial_cleanup();
+err_serial:
+       gphonet_cleanup();
+err_phonet:
+       return status;
+}
+
+static int __exit nokia_unbind(struct usb_composite_dev *cdev)
+{
+       gphonet_cleanup();
+       gserial_cleanup();
+       gether_cleanup();
+
+       return 0;
+}
+
+static struct usb_composite_driver nokia_driver = {
+       .name           = "g_nokia",
+       .dev            = &device_desc,
+       .strings        = dev_strings,
+       .bind           = nokia_bind,
+       .unbind         = __exit_p(nokia_unbind),
+};
+
+static int __init nokia_init(void)
+{
+       return usb_composite_register(&nokia_driver);
+}
+module_init(nokia_init);
+
+static void __exit nokia_cleanup(void)
+{
+       usb_composite_unregister(&nokia_driver);
+}
+module_exit(nokia_cleanup);
+