usb: gadget: Gadget directory cleanup - group UDC drivers

The drivers/usb/gadget directory contains many files.
Files which are related can be distributed into separate directories.
This patch moves the UDC drivers into a separate directory.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 0 insertions, 403 deletions

diff --git a/drivers/usb/gadget/net2280.h b/drivers/usb/gadget/net2280.h
deleted file mode 100644
index 03f1524..0000000
--- a/drivers/usb/gadget/net2280.h
+++ /dev/null
@@ -1,403 +0,0 @@
-/*
- * 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
- * Copyright (C) 2014 Ricardo Ribalda - Qtechnology/AS
- *
- * 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>
-#include <linux/usb/usb338x.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, &regs->idxaddr);
-	/* NOTE:  synchs device/cpu memory views */
-	return readl(&regs->idxdata);
-}
-
-static inline void
-set_idx_reg(struct net2280_regs __iomem *regs, u32 index, u32 value)
-{
-	writel(index, &regs->idxaddr);
-	writel(value, &regs->idxdata);
-	/* posted, may not be visible yet */
-}
-
-#endif	/* __KERNEL__ */
-
-#define PCI_VENDOR_ID_PLX_LEGACY 0x17cc
-
-#define PLX_LEGACY		BIT(0)
-#define PLX_2280		BIT(1)
-#define PLX_SUPERSPEED		BIT(2)
-
-#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
-
-/* DEFECT 7374 */
-#define DEFECT_7374_NUMBEROF_MAX_WAIT_LOOPS         200
-#define DEFECT_7374_PROCESSOR_WAIT_TIME             10
-
-/* ep0 max packet size */
-#define EP0_SS_MAX_PACKET_SIZE  0x200
-#define EP0_HS_MAX_PACKET_SIZE  0x40
-#ifdef	__KERNEL__
-
-/*-------------------------------------------------------------------------*/
-
-/* [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;
-} __aligned(16);
-
-/*-------------------------------------------------------------------------*/
-
-/* DRIVER DATA STRUCTURES and UTILITIES */
-
-struct net2280_ep {
-	struct usb_ep				ep;
-	struct net2280_ep_regs __iomem *cfg;
-	struct net2280_ep_regs			__iomem *regs;
-	struct net2280_dma_regs			__iomem *dma;
-	struct net2280_dma			*dummy;
-	struct usb338x_fifo_regs __iomem *fiforegs;
-	dma_addr_t				td_dma;	/* of dummy */
-	struct net2280				*dev;
-	unsigned long				irqs;
-	unsigned is_halt:1, dma_started:1;
-
-	/* 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(BIT(CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE) |
-		BIT(CLEAR_NAK_OUT_PACKETS) |
-		BIT(CLEAR_NAK_OUT_PACKETS_MODE),
-		&ep->regs->ep_rsp);
-	ep->stopped = 1;
-}
-
-static void allow_status_338x(struct net2280_ep *ep)
-{
-	/*
-	 * Control Status Phase Handshake was set by the chip when the setup
-	 * packet arrived. While set, the chip automatically NAKs the host's
-	 * Status Phase tokens.
-	 */
-	writel(BIT(CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE), &ep->regs->ep_rsp);
-
-	ep->stopped = 1;
-
-	/* TD 9.9 Halt Endpoint test.  TD 9.22 set feature test. */
-	ep->responded = 0;
-}
-
-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[9];
-	struct usb_gadget_driver	*driver;
-	unsigned			enabled : 1,
-					protocol_stall : 1,
-					softconnect : 1,
-					got_irq : 1,
-					region:1,
-					u1_enable:1,
-					u2_enable:1,
-					ltm_enable:1,
-					wakeup_enable:1,
-					selfpowered:1,
-					addressed_state:1;
-	u16				chiprev;
-	int enhanced_mode;
-	int n_ep;
-	kernel_ulong_t			quirks;
-
-
-	/* pci state used to access those endpoints */
-	struct pci_dev			*pdev;
-	struct net2280_regs		__iomem *regs;
-	struct net2280_usb_regs		__iomem *usb;
-	struct usb338x_usb_ext_regs	__iomem *usb_ext;
-	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 usb338x_fifo_regs	__iomem *fiforegs;
-	struct usb338x_ll_regs		__iomem *llregs;
-	struct usb338x_ll_lfps_regs	__iomem *ll_lfps_regs;
-	struct usb338x_ll_tsn_regs	__iomem *ll_tsn_regs;
-	struct usb338x_ll_chi_regs	__iomem *ll_chicken_reg;
-	struct usb338x_pl_regs		__iomem *plregs;
-
-	struct pci_pool			*requests;
-	/* statistics...*/
-};
-
-static inline void set_halt(struct net2280_ep *ep)
-{
-	/* ep0 and bulk/intr endpoints */
-	writel(BIT(CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE) |
-		/* set NAK_OUT for erratum 0114 */
-		((ep->dev->chiprev == CHIPREV_1) << SET_NAK_OUT_PACKETS) |
-		BIT(SET_ENDPOINT_HALT),
-		&ep->regs->ep_rsp);
-}
-
-static inline void clear_halt(struct net2280_ep *ep)
-{
-	/* ep0 and bulk/intr endpoints */
-	writel(BIT(CLEAR_ENDPOINT_HALT) |
-		BIT(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);
-}
-
-/*
- * FSM value for Defect 7374 (U1U2 Test) is managed in
- * chip's SCRATCH register:
- */
-#define DEFECT7374_FSM_FIELD    28
-
-/* Waiting for Control Read:
- *  - A transition to this state indicates a fresh USB connection,
- *    before the first Setup Packet. The connection speed is not
- *    known. Firmware is waiting for the first Control Read.
- *  - Starting state: This state can be thought of as the FSM's typical
- *    starting state.
- *  - Tip: Upon the first SS Control Read the FSM never
- *    returns to this state.
- */
-#define DEFECT7374_FSM_WAITING_FOR_CONTROL_READ BIT(DEFECT7374_FSM_FIELD)
-
-/* Non-SS Control Read:
- *  - A transition to this state indicates detection of the first HS
- *    or FS Control Read.
- *  - Tip: Upon the first SS Control Read the FSM never
- *    returns to this state.
- */
-#define	DEFECT7374_FSM_NON_SS_CONTROL_READ (2 << DEFECT7374_FSM_FIELD)
-
-/* SS Control Read:
- *  - A transition to this state indicates detection of the
- *    first SS Control Read.
- *  - This state indicates workaround completion. Workarounds no longer
- *    need to be applied (as long as the chip remains powered up).
- *  - Tip: Once in this state the FSM state does not change (until
- *    the chip's power is lost and restored).
- *  - This can be thought of as the final state of the FSM;
- *    the FSM 'locks-up' in this state until the chip loses power.
- */
-#define DEFECT7374_FSM_SS_CONTROL_READ (3 << DEFECT7374_FSM_FIELD)
-
-#ifdef USE_RDK_LEDS
-
-static inline void net2280_led_init(struct net2280 *dev)
-{
-	/* LED3 (green) is on during USB activity. note erratum 0113. */
-	writel(BIT(GPIO3_LED_SELECT) |
-		BIT(GPIO3_OUTPUT_ENABLE) |
-		BIT(GPIO2_OUTPUT_ENABLE) |
-		BIT(GPIO1_OUTPUT_ENABLE) |
-		BIT(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_SUPER:		/* green + red */
-		val |= BIT(GPIO0_DATA) | BIT(GPIO1_DATA);
-		break;
-	case USB_SPEED_HIGH:		/* green */
-		val &= ~BIT(GPIO0_DATA);
-		val |= BIT(GPIO1_DATA);
-		break;
-	case USB_SPEED_FULL:		/* red */
-		val &= ~BIT(GPIO1_DATA);
-		val |= BIT(GPIO0_DATA);
-		break;
-	default:			/* (off/black) */
-		val &= ~(BIT(GPIO1_DATA) | BIT(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 ep_dbg(ndev, fmt, args...) \
-	dev_dbg((&((ndev)->pdev->dev)), fmt, ##args)
-
-#define ep_vdbg(ndev, fmt, args...) \
-	dev_vdbg((&((ndev)->pdev->dev)), fmt, ##args)
-
-#define ep_info(ndev, fmt, args...) \
-	dev_info((&((ndev)->pdev->dev)), fmt, ##args)
-
-#define ep_warn(ndev, fmt, args...) \
-	dev_warn((&((ndev)->pdev->dev)), fmt, ##args)
-
-#define ep_err(ndev, fmt, args...) \
-	dev_err((&((ndev)->pdev->dev)), fmt, ##args)
-
-/*-------------------------------------------------------------------------*/
-
-static inline void set_fifo_bytecount(struct net2280_ep *ep, unsigned count)
-{
-	if (ep->dev->pdev->vendor == 0x17cc)
-		writeb(count, 2 + (u8 __iomem *) &ep->regs->ep_cfg);
-	else{
-		u32 tmp = readl(&ep->cfg->ep_cfg) &
-					(~(0x07 << EP_FIFO_BYTE_COUNT));
-		writel(tmp | (count << EP_FIFO_BYTE_COUNT), &ep->cfg->ep_cfg);
-	}
-}
-
-static inline void start_out_naking(struct net2280_ep *ep)
-{
-	/* NOTE:  hardware races lurk here, and PING protocol issues */
-	writel(BIT(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 & BIT(NAK_OUT_PACKETS)) == 0) {
-		ep_dbg(ep->dev, "%s %s %08x !NAK\n",
-				ep->ep.name, where, tmp);
-		writel(BIT(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 & BIT(NAK_OUT_PACKETS)) != 0)
-		writel(BIT(CLEAR_NAK_OUT_PACKETS), &ep->regs->ep_rsp);
-}
-
-
-static inline void set_max_speed(struct net2280_ep *ep, u32 max)
-{
-	u32 reg;
-	static const u32 ep_enhanced[9] = { 0x10, 0x60, 0x30, 0x80,
-					  0x50, 0x20, 0x70, 0x40, 0x90 };
-
-	if (ep->dev->enhanced_mode)
-		reg = ep_enhanced[ep->num];
-	else{
-		reg = (ep->num + 1) * 0x10;
-		if (ep->dev->gadget.speed != USB_SPEED_HIGH)
-			reg += 1;
-	}
-
-	set_idx_reg(ep->dev->regs, reg, max);
-}
-
-#endif	/* __KERNEL__ */