Revert "Revert "usb: rockchip: add the rockusb gadget""

This reverts commit 7a4b754.

arch/arm/include/asm/arch-rockchip/f_rockusb.h

@@ -0,0 +1,132 @@
+/*
+ * (C) Copyright 2017
+ *
+ * Eddie Cai <eddie.cai.linux@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _F_ROCKUSB_H_
+#define _F_ROCKUSB_H_
+#include <blk.h>
+
+#define ROCKUSB_VERSION		"0.1"
+
+#define ROCKUSB_INTERFACE_CLASS	0xff
+#define ROCKUSB_INTERFACE_SUB_CLASS	0x06
+#define ROCKUSB_INTERFACE_PROTOCOL	0x05
+
+#define RX_ENDPOINT_MAXIMUM_PACKET_SIZE_2_0  (0x0200)
+#define RX_ENDPOINT_MAXIMUM_PACKET_SIZE_1_1  (0x0040)
+#define TX_ENDPOINT_MAXIMUM_PACKET_SIZE      (0x0040)
+
+#define EP_BUFFER_SIZE			4096
+/*
+ * EP_BUFFER_SIZE must always be an integral multiple of maxpacket size
+ * (64 or 512 or 1024), else we break on certain controllers like DWC3
+ * that expect bulk OUT requests to be divisible by maxpacket size.
+ */
+
+#define CONFIG_ROCKUSB_BUF_ADDR		CONFIG_SYS_LOAD_ADDR
+#define CONFIG_ROCKUSB_BUF_SIZE		0x08000000
+
+#define RKUSB_STATUS_IDLE			0
+#define RKUSB_STATUS_CMD			1
+#define RKUSB_STATUS_RXDATA			2
+#define RKUSB_STATUS_TXDATA			3
+#define RKUSB_STATUS_CSW			4
+#define RKUSB_STATUS_RXDATA_PREPARE		5
+#define RKUSB_STATUS_TXDATA_PREPARE		6
+
+enum rkusb_command {
+K_FW_TEST_UNIT_READY	= 0x00,
+K_FW_READ_FLASH_ID = 0x01,
+K_FW_SET_DEVICE_ID = 0x02,
+K_FW_TEST_BAD_BLOCK = 0x03,
+K_FW_READ_10 = 0x04,
+K_FW_WRITE_10 = 0x05,
+K_FW_ERASE_10 = 0x06,
+K_FW_WRITE_SPARE = 0x07,
+K_FW_READ_SPARE = 0x08,
+
+K_FW_ERASE_10_FORCE = 0x0b,
+K_FW_GET_VERSION = 0x0c,
+
+K_FW_LBA_READ_10 = 0x14,
+K_FW_LBA_WRITE_10 = 0x15,
+K_FW_ERASE_SYS_DISK = 0x16,
+K_FW_SDRAM_READ_10 = 0x17,
+K_FW_SDRAM_WRITE_10 = 0x18,
+K_FW_SDRAM_EXECUTE = 0x19,
+K_FW_READ_FLASH_INFO = 0x1A,
+K_FW_GET_CHIP_VER = 0x1B,
+K_FW_LOW_FORMAT = 0x1C,
+K_FW_SET_RESET_FLAG = 0x1E,
+K_FW_SPI_READ_10 = 0x21,
+K_FW_SPI_WRITE_10 = 0x22,
+
+K_FW_SESSION = 0X30,
+K_FW_RESET = 0xff,
+};
+
+#define CBW_DIRECTION_OUT		0x00
+#define CBW_DIRECTION_IN		0x80
+
+struct cmd_dispatch_info {
+	enum rkusb_command cmd;
+	/* call back function to handle rockusb command */
+	void (*cb)(struct usb_ep *ep, struct usb_request *req);
+};
+
+/* Bulk-only data structures */
+
+/* Command Block Wrapper */
+struct fsg_bulk_cb_wrap {
+	__le32  signature;              /* Contains 'USBC' */
+	u32     tag;                    /* Unique per command id */
+	__le32  data_transfer_length;   /* Size of the data */
+	u8      flags;                  /* Direction in bit 7 */
+	u8      lun;                    /* lun (normally 0) */
+	u8      length;                 /* Of the CDB, <= MAX_COMMAND_SIZE */
+	u8      CDB[16];                /* Command Data Block */
+};
+
+#define USB_BULK_CB_WRAP_LEN    31
+#define USB_BULK_CB_SIG         0x43425355      /* Spells out USBC */
+#define USB_BULK_IN_FLAG        0x80
+
+/* Command status Wrapper */
+struct bulk_cs_wrap {
+	__le32  signature;              /* Should = 'USBS' */
+	u32     tag;                    /* Same as original command */
+	__le32  residue;                /* Amount not transferred */
+	u8      status;                 /* See below */
+};
+
+#define USB_BULK_CS_WRAP_LEN    13
+#define USB_BULK_CS_SIG         0x53425355      /* Spells out 'USBS' */
+#define USB_STATUS_PASS         0
+#define USB_STATUS_FAIL         1
+#define USB_STATUS_PHASE_ERROR  2
+
+#define CSW_GOOD                0x00
+#define CSW_FAIL                0x01
+
+struct f_rockusb {
+	struct usb_function usb_function;
+	struct usb_ep *in_ep, *out_ep;
+	struct usb_request *in_req, *out_req;
+	char *rockusb_dev_type;
+	unsigned int rockusb_dev_index;
+	unsigned int download_tag;
+	unsigned int download_lba;
+	unsigned int download_size;
+	unsigned int download_bytes;
+	struct blk_desc *download_desc;
+	int reboot_flag;
+};
+
+/* init rockusb device, tell rockusb which device you want to read/write*/
+void rockusb_dev_init(char *dev_type, int dev_index);
+#endif /* _F_ROCKUSB_H_ */
+

drivers/usb/dwc3/gadget.c

@@ -1123,7 +1123,7 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep,
 			dwc3_stop_active_transfer(dwc, dep->number, true);
 			goto out1;
 		}
-		dev_err(dwc->dev, "request %p was not queued to %s\n",
+		dev_vdbg(dwc->dev, "request %p was not queued to %s\n",
 				request, ep->name);
 		ret = -EINVAL;
 		goto out0;

drivers/usb/gadget/Kconfig

@@ -119,6 +119,14 @@ config G_DNL_VENDOR_NUM
 config G_DNL_PRODUCT_NUM
 	hex "Product ID of USB device"
 
+config USB_FUNCTION_ROCKUSB
+	bool "Enable USB rockusb gadget"
+	help
+	  Rockusb protocol is widely used by Rockchip SoC based devices. It can
+	  read/write info, image to/from devices. This enables the USB part of
+	  the rockusb gadget.for more detail about Rockusb protocol, please see
+	  doc/README.rockusb
+
 config USBNET_DEVADDR
 	string "USB Gadget Ethernet device mac address"
 	default "de:ad:be:ef:00:01"

drivers/usb/gadget/Makefile

@@ -29,6 +29,7 @@ obj-$(CONFIG_USB_FUNCTION_THOR) += f_thor.o
 obj-$(CONFIG_USB_FUNCTION_DFU) += f_dfu.o
 obj-$(CONFIG_USB_FUNCTION_MASS_STORAGE) += f_mass_storage.o
 obj-$(CONFIG_USB_FUNCTION_FASTBOOT) += f_fastboot.o
+obj-$(CONFIG_USB_FUNCTION_ROCKUSB) += f_rockusb.o
 obj-$(CONFIG_USB_FUNCTION_SDP) += f_sdp.o
 endif
 endif