[U-Boot] [PATCH v4 1/7] dfu:usb: Support for g_dnl composite download gadget.
Lukasz Majewski
l.majewski at samsung.com
Fri Aug 3 09:45:33 CEST 2012
Composite USB download gadget support (g_dnl) for download functions.
This code works on top of composite gadget.
Signed-off-by: Lukasz Majewski <l.majewski at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
Cc: Marek Vasut <marex at denx.de>
---
Changes for v2:
- G_DNL_{VENDOR_NUM, PRODUCT_NUM and MANUFACTURER} defined at
./include/configs/<board>.h
- Suspend and resume stub methods removed
- '\0' repleaced with plain 0
Changes for v3:
- Remove unused #includes
- Replace strncpy and strncat with strcpy and strcat. It was possible
due to new approach to g_dnl name generation (at g_dnl_register function)
- Rename the g_dnl_{init|cleanup} to g_dnl_{register|unregister}
- Replace the G_DNL_* CONFIG_G_DNL_*
Changes for v4:
- Remove unnecessary otg calls
- odin prefix replaced with g_dnl
- Single space indentation between type and variable name
---
drivers/usb/gadget/Makefile | 1 +
drivers/usb/gadget/g_dnl.c | 202 +++++++++++++++++++++++++++++++++++++++++++
include/g_dnl.h | 33 +++++++
3 files changed, 236 insertions(+), 0 deletions(-)
create mode 100644 drivers/usb/gadget/g_dnl.c
create mode 100644 include/g_dnl.h
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index 87d1918..2c067c8 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -29,6 +29,7 @@ LIB := $(obj)libusb_gadget.o
ifdef CONFIG_USB_GADGET
COBJS-y += epautoconf.o config.o usbstring.o
COBJS-$(CONFIG_USB_GADGET_S3C_UDC_OTG) += s3c_udc_otg.o
+COBJS-$(CONFIG_USBDOWNLOAD_GADGET) += g_dnl.o
endif
ifdef CONFIG_USB_ETHER
COBJS-y += ether.o epautoconf.o config.o usbstring.o
diff --git a/drivers/usb/gadget/g_dnl.c b/drivers/usb/gadget/g_dnl.c
new file mode 100644
index 0000000..7d87050
--- /dev/null
+++ b/drivers/usb/gadget/g_dnl.c
@@ -0,0 +1,202 @@
+/*
+ * g_dnl.c -- USB Downloader Gadget
+ *
+ * Copyright (C) 2012 Samsung Electronics
+ * Lukasz Majewski <l.majewski at samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <errno.h>
+#include <common.h>
+#include <malloc.h>
+
+#include <mmc.h>
+#include <part.h>
+
+#include <g_dnl.h>
+#include "f_dfu.h"
+
+#include "gadget_chips.h"
+#include "composite.c"
+
+/*
+ * One needs to define the following:
+ * CONFIG_G_DNL_VENDOR_NUM
+ * CONFIG_G_DNL_PRODUCT_NUM
+ * CONFIG_G_DNL_MANUFACTURER
+ * at e.g. ./include/configs/<board>.h
+ */
+
+#define STRING_MANUFACTURER 25
+#define STRING_PRODUCT 2
+#define STRING_USBDOWN 2
+#define CONFIG_USBDOWNLOADER 2
+
+#define DRIVER_VERSION "usb_dnl 2.0"
+
+static const char shortname[] = "usb_dnl_";
+static const char product[] = "USB download gadget";
+static const char manufacturer[] = CONFIG_G_DNL_MANUFACTURER;
+
+static struct usb_device_descriptor device_desc = {
+ .bLength = sizeof device_desc,
+ .bDescriptorType = USB_DT_DEVICE,
+
+ .bcdUSB = __constant_cpu_to_le16(0x0200),
+ .bDeviceClass = USB_CLASS_COMM,
+ .bDeviceSubClass = 0x02, /*0x02:CDC-modem , 0x00:CDC-serial*/
+
+ .idVendor = __constant_cpu_to_le16(CONFIG_G_DNL_VENDOR_NUM),
+ .idProduct = __constant_cpu_to_le16(CONFIG_G_DNL_PRODUCT_NUM),
+ .iProduct = STRING_PRODUCT,
+ .bNumConfigurations = 1,
+};
+
+/* static strings, in UTF-8 */
+static struct usb_string g_dnl_string_defs[] = {
+ { 0, manufacturer, },
+ { 1, product, },
+};
+
+static struct usb_gadget_strings g_dnl_string_tab = {
+ .language = 0x0409, /* en-us */
+ .strings = g_dnl_string_defs,
+};
+
+static struct usb_gadget_strings *g_dnl_composite_strings[] = {
+ &g_dnl_string_tab,
+ NULL,
+};
+
+static int g_dnl_unbind(struct usb_composite_dev *cdev)
+{
+ debug("%s\n", __func__);
+ return 0;
+}
+
+static int g_dnl_do_config(struct usb_configuration *c)
+{
+ const char *s = c->cdev->driver->name;
+ int ret = -1;
+
+ debug("%s: configuration: 0x%p composite dev: 0x%p\n",
+ __func__, c, c->cdev);
+
+ printf("GADGET DRIVER: %s\n", s);
+ if (!strcmp(s, "usb_dnl_dfu"))
+ ret = dfu_add(c);
+
+ return ret;
+}
+
+static int g_dnl_config_register(struct usb_composite_dev *cdev)
+{
+ static struct usb_configuration config = {
+ .label = "usb_dnload",
+ .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER,
+ .bConfigurationValue = CONFIG_USBDOWNLOADER,
+ .iConfiguration = STRING_USBDOWN,
+
+ .bind = g_dnl_do_config,
+ };
+
+ return usb_add_config(cdev, &config);
+}
+
+static int g_dnl_bind(struct usb_composite_dev *cdev)
+{
+ struct usb_gadget *gadget = cdev->gadget;
+ int id, ret;
+ int gcnum;
+
+ debug("%s: gadget: 0x%p cdev: 0x%p\n", __func__, gadget, cdev);
+
+ id = usb_string_id(cdev);
+
+ if (id < 0)
+ return id;
+ g_dnl_string_defs[0].id = id;
+ device_desc.iManufacturer = id;
+
+ id = usb_string_id(cdev);
+ if (id < 0)
+ return id;
+
+ g_dnl_string_defs[1].id = id;
+ device_desc.iProduct = id;
+
+ ret = g_dnl_config_register(cdev);
+ if (ret)
+ goto error;
+
+ gcnum = usb_gadget_controller_number(gadget);
+
+ debug("gcnum: %d\n", gcnum);
+ if (gcnum >= 0)
+ device_desc.bcdDevice = cpu_to_le16(0x0200 + gcnum);
+ else {
+ debug("%s: controller '%s' not recognized\n",
+ shortname, gadget->name);
+ device_desc.bcdDevice = __constant_cpu_to_le16(0x9999);
+ }
+
+ return 0;
+
+ error:
+ g_dnl_unbind(cdev);
+ return -ENOMEM;
+}
+
+static struct usb_composite_driver g_dnl_driver = {
+ .name = NULL,
+ .dev = &device_desc,
+ .strings = g_dnl_composite_strings,
+
+ .bind = g_dnl_bind,
+ .unbind = g_dnl_unbind,
+};
+
+int g_dnl_register(const char *type)
+{
+ /* We only allow "dfu" atm, so 3 should be enough */
+ static char name[sizeof(shortname) + 3];
+ int ret;
+
+ if (!strcmp(type, "dfu")) {
+ strcpy(name, shortname);
+ strcat(name, type);
+ } else {
+ printf("%s: unknown command: %s\n", __func__, type);
+ return -EINVAL;
+ }
+
+ g_dnl_driver.name = name;
+
+ debug("%s: g_dnl_driver.name: %s\n", __func__, g_dnl_driver.name);
+ ret = usb_composite_register(&g_dnl_driver);
+
+ if (ret) {
+ printf("%s: failed!, error: %d\n", __func__, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+void g_dnl_unregister(void)
+{
+ usb_composite_unregister(&g_dnl_driver);
+}
diff --git a/include/g_dnl.h b/include/g_dnl.h
new file mode 100644
index 0000000..0ec7440
--- /dev/null
+++ b/include/g_dnl.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics
+ * Lukasz Majewski <l.majewski at samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __G_DOWNLOAD_H_
+#define __G_DOWNLOAD_H_
+
+#include <linux/usb/ch9.h>
+#include <usbdescriptors.h>
+#include <linux/usb/gadget.h>
+
+int g_dnl_register(const char *s);
+void g_dnl_unregister(void);
+
+/* USB initialization declaration - board specific */
+void board_usb_init(void);
+#endif /* __G_DOWNLOAD_H_ */
--
1.7.2.3
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