zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/drivers/usb/gadget/net2280.h b/ap/os/linux/linux-3.4.x/drivers/usb/gadget/net2280.h
new file mode 100644
index 0000000..a844be0
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/usb/gadget/net2280.h
@@ -0,0 +1,308 @@
+/*
+ * NetChip 2280 high/full speed USB device controller.
+ * Unlike many such controllers, this one talks PCI.
+ */
+
+/*
+ * Copyright (C) 2002 NetChip Technology, Inc. (http://www.netchip.com)
+ * Copyright (C) 2003 David Brownell
+ *
+ * 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.
+ */
+
+#include <linux/usb/net2280.h>
+
+/*-------------------------------------------------------------------------*/
+
+#ifdef __KERNEL__
+
+/* indexed registers [11.10] are accessed indirectly
+ * caller must own the device lock.
+ */
+
+static inline u32
+get_idx_reg (struct net2280_regs __iomem *regs, u32 index)
+{
+ writel (index, ®s->idxaddr);
+ /* NOTE: synchs device/cpu memory views */
+ return readl (®s->idxdata);
+}
+
+static inline void
+set_idx_reg (struct net2280_regs __iomem *regs, u32 index, u32 value)
+{
+ writel (index, ®s->idxaddr);
+ writel (value, ®s->idxdata);
+ /* posted, may not be visible yet */
+}
+
+#endif /* __KERNEL__ */
+
+
+#define REG_DIAG 0x0
+#define RETRY_COUNTER 16
+#define FORCE_PCI_SERR 11
+#define FORCE_PCI_INTERRUPT 10
+#define FORCE_USB_INTERRUPT 9
+#define FORCE_CPU_INTERRUPT 8
+#define ILLEGAL_BYTE_ENABLES 5
+#define FAST_TIMES 4
+#define FORCE_RECEIVE_ERROR 2
+#define FORCE_TRANSMIT_CRC_ERROR 0
+#define REG_FRAME 0x02 /* from last sof */
+#define REG_CHIPREV 0x03 /* in bcd */
+#define REG_HS_NAK_RATE 0x0a /* NAK per N uframes */
+
+#define CHIPREV_1 0x0100
+#define CHIPREV_1A 0x0110
+
+#ifdef __KERNEL__
+
+/* ep a-f highspeed and fullspeed maxpacket, addresses
+ * computed from ep->num
+ */
+#define REG_EP_MAXPKT(dev,num) (((num) + 1) * 0x10 + \
+ (((dev)->gadget.speed == USB_SPEED_HIGH) ? 0 : 1))
+
+/*-------------------------------------------------------------------------*/
+
+/* [8.3] for scatter/gather i/o
+ * use struct net2280_dma_regs bitfields
+ */
+struct net2280_dma {
+ __le32 dmacount;
+ __le32 dmaaddr; /* the buffer */
+ __le32 dmadesc; /* next dma descriptor */
+ __le32 _reserved;
+} __attribute__ ((aligned (16)));
+
+/*-------------------------------------------------------------------------*/
+
+/* DRIVER DATA STRUCTURES and UTILITIES */
+
+struct net2280_ep {
+ struct usb_ep ep;
+ struct net2280_ep_regs __iomem *regs;
+ struct net2280_dma_regs __iomem *dma;
+ struct net2280_dma *dummy;
+ dma_addr_t td_dma; /* of dummy */
+ struct net2280 *dev;
+ unsigned long irqs;
+
+ /* analogous to a host-side qh */
+ struct list_head queue;
+ const struct usb_endpoint_descriptor *desc;
+ unsigned num : 8,
+ fifo_size : 12,
+ in_fifo_validate : 1,
+ out_overflow : 1,
+ stopped : 1,
+ wedged : 1,
+ is_in : 1,
+ is_iso : 1,
+ responded : 1;
+};
+
+static inline void allow_status (struct net2280_ep *ep)
+{
+ /* ep0 only */
+ writel ( (1 << CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE)
+ | (1 << CLEAR_NAK_OUT_PACKETS)
+ | (1 << CLEAR_NAK_OUT_PACKETS_MODE)
+ , &ep->regs->ep_rsp);
+ ep->stopped = 1;
+}
+
+/* count (<= 4) bytes in the next fifo write will be valid */
+static inline void set_fifo_bytecount (struct net2280_ep *ep, unsigned count)
+{
+ writeb (count, 2 + (u8 __iomem *) &ep->regs->ep_cfg);
+}
+
+struct net2280_request {
+ struct usb_request req;
+ struct net2280_dma *td;
+ dma_addr_t td_dma;
+ struct list_head queue;
+ unsigned mapped : 1,
+ valid : 1;
+};
+
+struct net2280 {
+ /* each pci device provides one gadget, several endpoints */
+ struct usb_gadget gadget;
+ spinlock_t lock;
+ struct net2280_ep ep [7];
+ struct usb_gadget_driver *driver;
+ unsigned enabled : 1,
+ protocol_stall : 1,
+ softconnect : 1,
+ got_irq : 1,
+ region : 1;
+ u16 chiprev;
+
+ /* pci state used to access those endpoints */
+ struct pci_dev *pdev;
+ struct net2280_regs __iomem *regs;
+ struct net2280_usb_regs __iomem *usb;
+ struct net2280_pci_regs __iomem *pci;
+ struct net2280_dma_regs __iomem *dma;
+ struct net2280_dep_regs __iomem *dep;
+ struct net2280_ep_regs __iomem *epregs;
+
+ struct pci_pool *requests;
+ // statistics...
+};
+
+static inline void set_halt (struct net2280_ep *ep)
+{
+ /* ep0 and bulk/intr endpoints */
+ writel ( (1 << CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE)
+ /* set NAK_OUT for erratum 0114 */
+ | ((ep->dev->chiprev == CHIPREV_1) << SET_NAK_OUT_PACKETS)
+ | (1 << SET_ENDPOINT_HALT)
+ , &ep->regs->ep_rsp);
+}
+
+static inline void clear_halt (struct net2280_ep *ep)
+{
+ /* ep0 and bulk/intr endpoints */
+ writel ( (1 << CLEAR_ENDPOINT_HALT)
+ | (1 << CLEAR_ENDPOINT_TOGGLE)
+ /* unless the gadget driver left a short packet in the
+ * fifo, this reverses the erratum 0114 workaround.
+ */
+ | ((ep->dev->chiprev == CHIPREV_1) << CLEAR_NAK_OUT_PACKETS)
+ , &ep->regs->ep_rsp);
+}
+
+#ifdef USE_RDK_LEDS
+
+static inline void net2280_led_init (struct net2280 *dev)
+{
+ /* LED3 (green) is on during USB activity. note erratum 0113. */
+ writel ((1 << GPIO3_LED_SELECT)
+ | (1 << GPIO3_OUTPUT_ENABLE)
+ | (1 << GPIO2_OUTPUT_ENABLE)
+ | (1 << GPIO1_OUTPUT_ENABLE)
+ | (1 << GPIO0_OUTPUT_ENABLE)
+ , &dev->regs->gpioctl);
+}
+
+/* indicate speed with bi-color LED 0/1 */
+static inline
+void net2280_led_speed (struct net2280 *dev, enum usb_device_speed speed)
+{
+ u32 val = readl (&dev->regs->gpioctl);
+ switch (speed) {
+ case USB_SPEED_HIGH: /* green */
+ val &= ~(1 << GPIO0_DATA);
+ val |= (1 << GPIO1_DATA);
+ break;
+ case USB_SPEED_FULL: /* red */
+ val &= ~(1 << GPIO1_DATA);
+ val |= (1 << GPIO0_DATA);
+ break;
+ default: /* (off/black) */
+ val &= ~((1 << GPIO1_DATA) | (1 << GPIO0_DATA));
+ break;
+ }
+ writel (val, &dev->regs->gpioctl);
+}
+
+/* indicate power with LED 2 */
+static inline void net2280_led_active (struct net2280 *dev, int is_active)
+{
+ u32 val = readl (&dev->regs->gpioctl);
+
+ // FIXME this LED never seems to turn on.
+ if (is_active)
+ val |= GPIO2_DATA;
+ else
+ val &= ~GPIO2_DATA;
+ writel (val, &dev->regs->gpioctl);
+}
+static inline void net2280_led_shutdown (struct net2280 *dev)
+{
+ /* turn off all four GPIO*_DATA bits */
+ writel (readl (&dev->regs->gpioctl) & ~0x0f,
+ &dev->regs->gpioctl);
+}
+
+#else
+
+#define net2280_led_init(dev) do { } while (0)
+#define net2280_led_speed(dev, speed) do { } while (0)
+#define net2280_led_shutdown(dev) do { } while (0)
+
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+#define xprintk(dev,level,fmt,args...) \
+ printk(level "%s %s: " fmt , driver_name , \
+ pci_name(dev->pdev) , ## args)
+
+#ifdef DEBUG
+#undef DEBUG
+#define DEBUG(dev,fmt,args...) \
+ xprintk(dev , KERN_DEBUG , fmt , ## args)
+#else
+#define DEBUG(dev,fmt,args...) \
+ do { } while (0)
+#endif /* DEBUG */
+
+#ifdef VERBOSE
+#define VDEBUG DEBUG
+#else
+#define VDEBUG(dev,fmt,args...) \
+ do { } while (0)
+#endif /* VERBOSE */
+
+#define ERROR(dev,fmt,args...) \
+ xprintk(dev , KERN_ERR , fmt , ## args)
+#define WARNING(dev,fmt,args...) \
+ xprintk(dev , KERN_WARNING , fmt , ## args)
+#define INFO(dev,fmt,args...) \
+ xprintk(dev , KERN_INFO , fmt , ## args)
+
+/*-------------------------------------------------------------------------*/
+
+static inline void start_out_naking (struct net2280_ep *ep)
+{
+ /* NOTE: hardware races lurk here, and PING protocol issues */
+ writel ((1 << SET_NAK_OUT_PACKETS), &ep->regs->ep_rsp);
+ /* synch with device */
+ readl (&ep->regs->ep_rsp);
+}
+
+#ifdef DEBUG
+static inline void assert_out_naking (struct net2280_ep *ep, const char *where)
+{
+ u32 tmp = readl (&ep->regs->ep_stat);
+
+ if ((tmp & (1 << NAK_OUT_PACKETS)) == 0) {
+ DEBUG (ep->dev, "%s %s %08x !NAK\n",
+ ep->ep.name, where, tmp);
+ writel ((1 << SET_NAK_OUT_PACKETS),
+ &ep->regs->ep_rsp);
+ }
+}
+#define ASSERT_OUT_NAKING(ep) assert_out_naking(ep,__func__)
+#else
+#define ASSERT_OUT_NAKING(ep) do {} while (0)
+#endif
+
+static inline void stop_out_naking (struct net2280_ep *ep)
+{
+ u32 tmp;
+
+ tmp = readl (&ep->regs->ep_stat);
+ if ((tmp & (1 << NAK_OUT_PACKETS)) != 0)
+ writel ((1 << CLEAR_NAK_OUT_PACKETS), &ep->regs->ep_rsp);
+}
+
+#endif /* __KERNEL__ */