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From:   Lukas Bulwahn <lukas.bulwahn@gmail.com>
To:     Arnd Bergmann <arnd@arndb.de>
Cc:     Aaro Koskinen <aaro.koskinen@iki.fi>,
        Janusz Krzysztofik <jmkrzyszt@gmail.com>,
        Tony Lindgren <tony@atomide.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
        linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org,
        linux-usb@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
        kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org,
        Lukas Bulwahn <lukas.bulwahn@gmail.com>
Subject: [PATCH 3/4] usb: remove OMAP USB Device Controller and OHCI support for OMAP1/2 chips
Date:   Thu, 12 Jan 2023 09:37:45 +0100
Message-Id: <20230112083746.9551-4-lukas.bulwahn@gmail.com>
In-Reply-To: <20230112083746.9551-1-lukas.bulwahn@gmail.com>
References: <20230112083746.9551-1-lukas.bulwahn@gmail.com>
Precedence: bulk

Commit 0fee2eac5c2b ("usb: phy: remove phy-isp1301-omap driver") removes
the Philips ISP1301 with OMAP OTG driver and its corresponding config
ISP1301_OMAP. The drivers, OMAP USB Device Controller and OHCI support for
OMAP1/2 chips, with corresponding configs, USB_OMAP and USB_OHCI_HCD_OMAP1,
need this removed driver (see "depends on ISP1301_OMAP") to build.

Remove those two drivers.

With the config USB_OMAP removed in this commit, remove some further code
in the omap-dma header and mach-omap1 architecture code.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
---
 arch/arm/mach-omap1/board-osk.c   |    5 -
 arch/arm/mach-omap1/omap-dma.c    |  455 -----
 arch/arm/mach-omap1/usb.c         |   67 -
 arch/arm/mach-omap1/usb.h         |    4 -
 drivers/usb/gadget/udc/Kconfig    |   15 -
 drivers/usb/gadget/udc/Makefile   |    1 -
 drivers/usb/gadget/udc/omap_udc.c | 3001 -----------------------------
 drivers/usb/gadget/udc/omap_udc.h |  207 --
 drivers/usb/host/Kconfig          |    8 -
 drivers/usb/host/Makefile         |    1 -
 drivers/usb/host/ohci-omap.c      |  435 -----
 include/linux/omap-dma.h          |   28 -
 12 files changed, 4227 deletions(-)
 delete mode 100644 drivers/usb/gadget/udc/omap_udc.c
 delete mode 100644 drivers/usb/gadget/udc/omap_udc.h
 delete mode 100644 drivers/usb/host/ohci-omap.c

diff --git a/arch/arm/mach-omap1/board-osk.c b/arch/arm/mach-omap1/board-osk.c
index df758c1f9237..117bb569b861 100644
--- a/arch/arm/mach-omap1/board-osk.c
+++ b/arch/arm/mach-omap1/board-osk.c
@@ -328,14 +328,9 @@ static struct omap_usb_config osk_usb_config __initdata = {
 	 * be used, with a NONSTANDARD gender-bending cable/dongle, as
 	 * a peripheral.
 	 */
-#if IS_ENABLED(CONFIG_USB_OMAP)
-	.register_dev	= 1,
-	.hmc_mode	= 0,
-#else
 	.register_host	= 1,
 	.hmc_mode	= 16,
 	.rwc		= 1,
-#endif
 	.pins[0]	= 2,
 };
 
diff --git a/arch/arm/mach-omap1/omap-dma.c b/arch/arm/mach-omap1/omap-dma.c
index f7e62de427f3..68ed5a5d4fa5 100644
--- a/arch/arm/mach-omap1/omap-dma.c
+++ b/arch/arm/mach-omap1/omap-dma.c
@@ -132,240 +132,6 @@ void omap_set_dma_priority(int lch, int dst_port, int priority)
 EXPORT_SYMBOL(omap_set_dma_priority);
 #endif
 
-#if IS_ENABLED(CONFIG_USB_OMAP)
-#ifdef CONFIG_ARCH_OMAP15XX
-/* Returns 1 if the DMA module is in OMAP1510-compatible mode, 0 otherwise */
-static int omap_dma_in_1510_mode(void)
-{
-	return enable_1510_mode;
-}
-#else
-#define omap_dma_in_1510_mode()		0
-#endif
-
-void omap_set_dma_transfer_params(int lch, int data_type, int elem_count,
-				  int frame_count, int sync_mode,
-				  int dma_trigger, int src_or_dst_synch)
-{
-	u32 l;
-	u16 ccr;
-
-	l = p->dma_read(CSDP, lch);
-	l &= ~0x03;
-	l |= data_type;
-	p->dma_write(l, CSDP, lch);
-
-	ccr = p->dma_read(CCR, lch);
-	ccr &= ~(1 << 5);
-	if (sync_mode == OMAP_DMA_SYNC_FRAME)
-		ccr |= 1 << 5;
-	p->dma_write(ccr, CCR, lch);
-
-	ccr = p->dma_read(CCR2, lch);
-	ccr &= ~(1 << 2);
-	if (sync_mode == OMAP_DMA_SYNC_BLOCK)
-		ccr |= 1 << 2;
-	p->dma_write(ccr, CCR2, lch);
-	p->dma_write(elem_count, CEN, lch);
-	p->dma_write(frame_count, CFN, lch);
-}
-EXPORT_SYMBOL(omap_set_dma_transfer_params);
-
-void omap_set_dma_channel_mode(int lch, enum omap_dma_channel_mode mode)
-{
-	if (!dma_omap15xx()) {
-		u32 l;
-
-		l = p->dma_read(LCH_CTRL, lch);
-		l &= ~0x7;
-		l |= mode;
-		p->dma_write(l, LCH_CTRL, lch);
-	}
-}
-EXPORT_SYMBOL(omap_set_dma_channel_mode);
-
-/* Note that src_port is only for omap1 */
-void omap_set_dma_src_params(int lch, int src_port, int src_amode,
-			     unsigned long src_start,
-			     int src_ei, int src_fi)
-{
-	u32 l;
-	u16 w;
-
-	w = p->dma_read(CSDP, lch);
-	w &= ~(0x1f << 2);
-	w |= src_port << 2;
-	p->dma_write(w, CSDP, lch);
-
-	l = p->dma_read(CCR, lch);
-	l &= ~(0x03 << 12);
-	l |= src_amode << 12;
-	p->dma_write(l, CCR, lch);
-
-	p->dma_write(src_start, CSSA, lch);
-
-	p->dma_write(src_ei, CSEI, lch);
-	p->dma_write(src_fi, CSFI, lch);
-}
-EXPORT_SYMBOL(omap_set_dma_src_params);
-
-void omap_set_dma_src_data_pack(int lch, int enable)
-{
-	u32 l;
-
-	l = p->dma_read(CSDP, lch);
-	l &= ~(1 << 6);
-	if (enable)
-		l |= (1 << 6);
-	p->dma_write(l, CSDP, lch);
-}
-EXPORT_SYMBOL(omap_set_dma_src_data_pack);
-
-void omap_set_dma_src_burst_mode(int lch, enum omap_dma_burst_mode burst_mode)
-{
-	unsigned int burst = 0;
-	u32 l;
-
-	l = p->dma_read(CSDP, lch);
-	l &= ~(0x03 << 7);
-
-	switch (burst_mode) {
-	case OMAP_DMA_DATA_BURST_DIS:
-		break;
-	case OMAP_DMA_DATA_BURST_4:
-		burst = 0x2;
-		break;
-	case OMAP_DMA_DATA_BURST_8:
-		/*
-		 * not supported by current hardware on OMAP1
-		 * w |= (0x03 << 7);
-		 */
-		fallthrough;
-	case OMAP_DMA_DATA_BURST_16:
-		/* OMAP1 don't support burst 16 */
-		fallthrough;
-	default:
-		BUG();
-	}
-
-	l |= (burst << 7);
-	p->dma_write(l, CSDP, lch);
-}
-EXPORT_SYMBOL(omap_set_dma_src_burst_mode);
-
-/* Note that dest_port is only for OMAP1 */
-void omap_set_dma_dest_params(int lch, int dest_port, int dest_amode,
-			      unsigned long dest_start,
-			      int dst_ei, int dst_fi)
-{
-	u32 l;
-
-	l = p->dma_read(CSDP, lch);
-	l &= ~(0x1f << 9);
-	l |= dest_port << 9;
-	p->dma_write(l, CSDP, lch);
-
-	l = p->dma_read(CCR, lch);
-	l &= ~(0x03 << 14);
-	l |= dest_amode << 14;
-	p->dma_write(l, CCR, lch);
-
-	p->dma_write(dest_start, CDSA, lch);
-
-	p->dma_write(dst_ei, CDEI, lch);
-	p->dma_write(dst_fi, CDFI, lch);
-}
-EXPORT_SYMBOL(omap_set_dma_dest_params);
-
-void omap_set_dma_dest_data_pack(int lch, int enable)
-{
-	u32 l;
-
-	l = p->dma_read(CSDP, lch);
-	l &= ~(1 << 13);
-	if (enable)
-		l |= 1 << 13;
-	p->dma_write(l, CSDP, lch);
-}
-EXPORT_SYMBOL(omap_set_dma_dest_data_pack);
-
-void omap_set_dma_dest_burst_mode(int lch, enum omap_dma_burst_mode burst_mode)
-{
-	unsigned int burst = 0;
-	u32 l;
-
-	l = p->dma_read(CSDP, lch);
-	l &= ~(0x03 << 14);
-
-	switch (burst_mode) {
-	case OMAP_DMA_DATA_BURST_DIS:
-		break;
-	case OMAP_DMA_DATA_BURST_4:
-		burst = 0x2;
-		break;
-	case OMAP_DMA_DATA_BURST_8:
-		burst = 0x3;
-		break;
-	case OMAP_DMA_DATA_BURST_16:
-		/* OMAP1 don't support burst 16 */
-		fallthrough;
-	default:
-		printk(KERN_ERR "Invalid DMA burst mode\n");
-		BUG();
-		return;
-	}
-	l |= (burst << 14);
-	p->dma_write(l, CSDP, lch);
-}
-EXPORT_SYMBOL(omap_set_dma_dest_burst_mode);
-
-static inline void omap_enable_channel_irq(int lch)
-{
-	/* Clear CSR */
-	p->dma_read(CSR, lch);
-
-	/* Enable some nice interrupts. */
-	p->dma_write(dma_chan[lch].enabled_irqs, CICR, lch);
-}
-
-void omap_disable_dma_irq(int lch, u16 bits)
-{
-	dma_chan[lch].enabled_irqs &= ~bits;
-}
-EXPORT_SYMBOL(omap_disable_dma_irq);
-
-static inline void enable_lnk(int lch)
-{
-	u32 l;
-
-	l = p->dma_read(CLNK_CTRL, lch);
-
-	l &= ~(1 << 14);
-
-	/* Set the ENABLE_LNK bits */
-	if (dma_chan[lch].next_lch != -1)
-		l = dma_chan[lch].next_lch | (1 << 15);
-
-	p->dma_write(l, CLNK_CTRL, lch);
-}
-
-static inline void disable_lnk(int lch)
-{
-	u32 l;
-
-	l = p->dma_read(CLNK_CTRL, lch);
-
-	/* Disable interrupts */
-	omap_disable_channel_irq(lch);
-
-	/* Set the STOP_LNK bit */
-	l |= 1 << 14;
-
-	p->dma_write(l, CLNK_CTRL, lch);
-	dma_chan[lch].flags &= ~OMAP_DMA_ACTIVE;
-}
-#endif
-
 int omap_request_dma(int dev_id, const char *dev_name,
 		     void (*callback)(int lch, u16 ch_status, void *data),
 		     void *data, int *dma_ch_out)
@@ -463,227 +229,6 @@ static void omap_clear_dma(int lch)
 	local_irq_restore(flags);
 }
 
-#if IS_ENABLED(CONFIG_USB_OMAP)
-void omap_start_dma(int lch)
-{
-	u32 l;
-
-	/*
-	 * The CPC/CDAC register needs to be initialized to zero
-	 * before starting dma transfer.
-	 */
-	if (dma_omap15xx())
-		p->dma_write(0, CPC, lch);
-	else
-		p->dma_write(0, CDAC, lch);
-
-	if (!omap_dma_in_1510_mode() && dma_chan[lch].next_lch != -1) {
-		int next_lch, cur_lch;
-		char dma_chan_link_map[MAX_LOGICAL_DMA_CH_COUNT];
-
-		/* Set the link register of the first channel */
-		enable_lnk(lch);
-
-		memset(dma_chan_link_map, 0, sizeof(dma_chan_link_map));
-		dma_chan_link_map[lch] = 1;
-
-		cur_lch = dma_chan[lch].next_lch;
-		do {
-			next_lch = dma_chan[cur_lch].next_lch;
-
-			/* The loop case: we've been here already */
-			if (dma_chan_link_map[cur_lch])
-				break;
-			/* Mark the current channel */
-			dma_chan_link_map[cur_lch] = 1;
-
-			enable_lnk(cur_lch);
-			omap_enable_channel_irq(cur_lch);
-
-			cur_lch = next_lch;
-		} while (next_lch != -1);
-	} else if (IS_DMA_ERRATA(DMA_ERRATA_PARALLEL_CHANNELS))
-		p->dma_write(lch, CLNK_CTRL, lch);
-
-	omap_enable_channel_irq(lch);
-
-	l = p->dma_read(CCR, lch);
-
-	if (IS_DMA_ERRATA(DMA_ERRATA_IFRAME_BUFFERING))
-			l |= OMAP_DMA_CCR_BUFFERING_DISABLE;
-	l |= OMAP_DMA_CCR_EN;
-
-	/*
-	 * As dma_write() uses IO accessors which are weakly ordered, there
-	 * is no guarantee that data in coherent DMA memory will be visible
-	 * to the DMA device.  Add a memory barrier here to ensure that any
-	 * such data is visible prior to enabling DMA.
-	 */
-	mb();
-	p->dma_write(l, CCR, lch);
-
-	dma_chan[lch].flags |= OMAP_DMA_ACTIVE;
-}
-EXPORT_SYMBOL(omap_start_dma);
-
-void omap_stop_dma(int lch)
-{
-	u32 l;
-
-	/* Disable all interrupts on the channel */
-	omap_disable_channel_irq(lch);
-
-	l = p->dma_read(CCR, lch);
-	if (IS_DMA_ERRATA(DMA_ERRATA_i541) &&
-			(l & OMAP_DMA_CCR_SEL_SRC_DST_SYNC)) {
-		int i = 0;
-		u32 sys_cf;
-
-		/* Configure No-Standby */
-		l = p->dma_read(OCP_SYSCONFIG, lch);
-		sys_cf = l;
-		l &= ~DMA_SYSCONFIG_MIDLEMODE_MASK;
-		l |= DMA_SYSCONFIG_MIDLEMODE(DMA_IDLEMODE_NO_IDLE);
-		p->dma_write(l , OCP_SYSCONFIG, 0);
-
-		l = p->dma_read(CCR, lch);
-		l &= ~OMAP_DMA_CCR_EN;
-		p->dma_write(l, CCR, lch);
-
-		/* Wait for sDMA FIFO drain */
-		l = p->dma_read(CCR, lch);
-		while (i < 100 && (l & (OMAP_DMA_CCR_RD_ACTIVE |
-					OMAP_DMA_CCR_WR_ACTIVE))) {
-			udelay(5);
-			i++;
-			l = p->dma_read(CCR, lch);
-		}
-		if (i >= 100)
-			pr_err("DMA drain did not complete on lch %d\n", lch);
-		/* Restore OCP_SYSCONFIG */
-		p->dma_write(sys_cf, OCP_SYSCONFIG, lch);
-	} else {
-		l &= ~OMAP_DMA_CCR_EN;
-		p->dma_write(l, CCR, lch);
-	}
-
-	/*
-	 * Ensure that data transferred by DMA is visible to any access
-	 * after DMA has been disabled.  This is important for coherent
-	 * DMA regions.
-	 */
-	mb();
-
-	if (!omap_dma_in_1510_mode() && dma_chan[lch].next_lch != -1) {
-		int next_lch, cur_lch = lch;
-		char dma_chan_link_map[MAX_LOGICAL_DMA_CH_COUNT];
-
-		memset(dma_chan_link_map, 0, sizeof(dma_chan_link_map));
-		do {
-			/* The loop case: we've been here already */
-			if (dma_chan_link_map[cur_lch])
-				break;
-			/* Mark the current channel */
-			dma_chan_link_map[cur_lch] = 1;
-
-			disable_lnk(cur_lch);
-
-			next_lch = dma_chan[cur_lch].next_lch;
-			cur_lch = next_lch;
-		} while (next_lch != -1);
-	}
-
-	dma_chan[lch].flags &= ~OMAP_DMA_ACTIVE;
-}
-EXPORT_SYMBOL(omap_stop_dma);
-
-/*
- * Allows changing the DMA callback function or data. This may be needed if
- * the driver shares a single DMA channel for multiple dma triggers.
- */
-/*
- * Returns current physical source address for the given DMA channel.
- * If the channel is running the caller must disable interrupts prior calling
- * this function and process the returned value before re-enabling interrupt to
- * prevent races with the interrupt handler. Note that in continuous mode there
- * is a chance for CSSA_L register overflow between the two reads resulting
- * in incorrect return value.
- */
-dma_addr_t omap_get_dma_src_pos(int lch)
-{
-	dma_addr_t offset = 0;
-
-	if (dma_omap15xx())
-		offset = p->dma_read(CPC, lch);
-	else
-		offset = p->dma_read(CSAC, lch);
-
-	if (IS_DMA_ERRATA(DMA_ERRATA_3_3) && offset == 0)
-		offset = p->dma_read(CSAC, lch);
-
-	if (!dma_omap15xx()) {
-		/*
-		 * CDAC == 0 indicates that the DMA transfer on the channel has
-		 * not been started (no data has been transferred so far).
-		 * Return the programmed source start address in this case.
-		 */
-		if (likely(p->dma_read(CDAC, lch)))
-			offset = p->dma_read(CSAC, lch);
-		else
-			offset = p->dma_read(CSSA, lch);
-	}
-
-	offset |= (p->dma_read(CSSA, lch) & 0xFFFF0000);
-
-	return offset;
-}
-EXPORT_SYMBOL(omap_get_dma_src_pos);
-
-/*
- * Returns current physical destination address for the given DMA channel.
- * If the channel is running the caller must disable interrupts prior calling
- * this function and process the returned value before re-enabling interrupt to
- * prevent races with the interrupt handler. Note that in continuous mode there
- * is a chance for CDSA_L register overflow between the two reads resulting
- * in incorrect return value.
- */
-dma_addr_t omap_get_dma_dst_pos(int lch)
-{
-	dma_addr_t offset = 0;
-
-	if (dma_omap15xx())
-		offset = p->dma_read(CPC, lch);
-	else
-		offset = p->dma_read(CDAC, lch);
-
-	/*
-	 * omap 3.2/3.3 erratum: sometimes 0 is returned if CSAC/CDAC is
-	 * read before the DMA controller finished disabling the channel.
-	 */
-	if (!dma_omap15xx() && offset == 0) {
-		offset = p->dma_read(CDAC, lch);
-		/*
-		 * CDAC == 0 indicates that the DMA transfer on the channel has
-		 * not been started (no data has been transferred so far).
-		 * Return the programmed destination start address in this case.
-		 */
-		if (unlikely(!offset))
-			offset = p->dma_read(CDSA, lch);
-	}
-
-	offset |= (p->dma_read(CDSA, lch) & 0xFFFF0000);
-
-	return offset;
-}
-EXPORT_SYMBOL(omap_get_dma_dst_pos);
-
-int omap_get_dma_active_status(int lch)
-{
-	return (p->dma_read(CCR, lch) & OMAP_DMA_CCR_EN) != 0;
-}
-EXPORT_SYMBOL(omap_get_dma_active_status);
-#endif
-
 int omap_dma_running(void)
 {
 	int lch;
diff --git a/arch/arm/mach-omap1/usb.c b/arch/arm/mach-omap1/usb.c
index 08d42abc4a0f..9fb16a2c2a3d 100644
--- a/arch/arm/mach-omap1/usb.c
+++ b/arch/arm/mach-omap1/usb.c
@@ -109,19 +109,6 @@ omap_otg_init(struct omap_usb_config *config)
 	syscon = omap_readl(OTG_SYSCON_1);
 	syscon |= HST_IDLE_EN|DEV_IDLE_EN|OTG_IDLE_EN;
 
-#if IS_ENABLED(CONFIG_USB_OMAP)
-	if (config->otg || config->register_dev) {
-		struct platform_device *udc_device = config->udc_device;
-		int status;
-
-		syscon &= ~DEV_IDLE_EN;
-		udc_device->dev.platform_data = config;
-		status = platform_device_register(udc_device);
-		if (status)
-			pr_debug("can't register UDC device, %d\n", status);
-	}
-#endif
-
 #if	IS_ENABLED(CONFIG_USB_OHCI_HCD)
 	if (config->otg || config->register_host) {
 		struct platform_device *ohci_device = config->ohci_device;
@@ -155,52 +142,10 @@ omap_otg_init(struct omap_usb_config *config)
 static void omap_otg_init(struct omap_usb_config *config) {}
 #endif
 
-#if IS_ENABLED(CONFIG_USB_OMAP)
-
-static struct resource udc_resources[] = {
-	/* order is significant! */
-	{		/* registers */
-		.start		= UDC_BASE,
-		.end		= UDC_BASE + 0xff,
-		.flags		= IORESOURCE_MEM,
-	}, {		/* general IRQ */
-		.start		= INT_USB_IRQ_GEN,
-		.flags		= IORESOURCE_IRQ,
-	}, {		/* PIO IRQ */
-		.start		= INT_USB_IRQ_NISO,
-		.flags		= IORESOURCE_IRQ,
-	}, {		/* SOF IRQ */
-		.start		= INT_USB_IRQ_ISO,
-		.flags		= IORESOURCE_IRQ,
-	},
-};
-
-static u64 udc_dmamask = ~(u32)0;
-
-static struct platform_device udc_device = {
-	.name		= "omap_udc",
-	.id		= -1,
-	.dev = {
-		.dma_mask		= &udc_dmamask,
-		.coherent_dma_mask	= 0xffffffff,
-	},
-	.num_resources	= ARRAY_SIZE(udc_resources),
-	.resource	= udc_resources,
-};
-
-static inline void udc_device_init(struct omap_usb_config *pdata)
-{
-	pdata->udc_device = &udc_device;
-}
-
-#else
-
 static inline void udc_device_init(struct omap_usb_config *pdata)
 {
 }
 
-#endif
-
 /* The dmamask must be set for OHCI to work */
 static u64 ohci_dmamask = ~(u32)0;
 
@@ -632,18 +577,6 @@ static void __init omap_1510_usb_init(struct omap_usb_config *config)
 	while (!(omap_readw(ULPD_DPLL_CTRL) & DPLL_LOCK))
 		cpu_relax();
 
-#if IS_ENABLED(CONFIG_USB_OMAP)
-	if (config->register_dev) {
-		int status;
-
-		udc_device.dev.platform_data = config;
-		status = platform_device_register(&udc_device);
-		if (status)
-			pr_debug("can't register UDC device, %d\n", status);
-		/* udc driver gates 48MHz by D+ pullup */
-	}
-#endif
-
 	if (IS_ENABLED(CONFIG_USB_OHCI_HCD) && config->register_host) {
 		int status;
 
diff --git a/arch/arm/mach-omap1/usb.h b/arch/arm/mach-omap1/usb.h
index 08c9344c46e3..6392b4334bde 100644
--- a/arch/arm/mach-omap1/usb.h
+++ b/arch/arm/mach-omap1/usb.h
@@ -6,11 +6,7 @@
 #include <linux/platform_data/usb-omap1.h>
 #include <linux/soc/ti/omap1-usb.h>
 
-#if IS_ENABLED(CONFIG_USB_OMAP)
-#define	is_usb0_device(config)	1
-#else
 #define	is_usb0_device(config)	0
-#endif
 
 #if IS_ENABLED(CONFIG_USB_SUPPORT)
 void omap1_usb_init(struct omap_usb_config *pdata);
diff --git a/drivers/usb/gadget/udc/Kconfig b/drivers/usb/gadget/udc/Kconfig
index a84da334ed25..38ce90ac82d2 100644
--- a/drivers/usb/gadget/udc/Kconfig
+++ b/drivers/usb/gadget/udc/Kconfig
@@ -115,21 +115,6 @@ config USB_GR_UDC
 	  Select this to support Aeroflex Gaisler GRUSBDC cores from the GRLIB
 	  VHDL IP core library.
 
-config USB_OMAP
-	tristate "OMAP USB Device Controller"
-	depends on ARCH_OMAP1
-	depends on ISP1301_OMAP
-	help
-	   Many Texas Instruments OMAP processors have flexible full
-	   speed USB device controllers, with support for up to 30
-	   endpoints (plus endpoint zero).  This driver supports the
-	   controller in the OMAP 1611, and should work with controllers
-	   in other OMAP processors too, given minor tweaks.
-
-	   Say "y" to link the driver statically, or "m" to build a
-	   dynamically linked module called "omap_udc" and force all
-	   gadget drivers to also be dynamically linked.
-
 config USB_PXA25X
 	tristate "PXA 25x or IXP 4xx"
 	depends on (ARCH_PXA && PXA25x) || ARCH_IXP4XX
diff --git a/drivers/usb/gadget/udc/Makefile b/drivers/usb/gadget/udc/Makefile
index 239ea22bdfd9..d0e37dbcd841 100644
--- a/drivers/usb/gadget/udc/Makefile
+++ b/drivers/usb/gadget/udc/Makefile
@@ -16,7 +16,6 @@ obj-$(CONFIG_USB_AMD5536UDC)	+= amd5536udc_pci.o
 obj-$(CONFIG_USB_PXA25X)	+= pxa25x_udc.o
 obj-$(CONFIG_USB_PXA27X)	+= pxa27x_udc.o
 obj-$(CONFIG_USB_GOKU)		+= goku_udc.o
-obj-$(CONFIG_USB_OMAP)		+= omap_udc.o
 obj-$(CONFIG_USB_AT91)		+= at91_udc.o
 obj-$(CONFIG_USB_ATMEL_USBA)	+= atmel_usba_udc.o
 obj-$(CONFIG_USB_BCM63XX_UDC)	+= bcm63xx_udc.o
diff --git a/drivers/usb/gadget/udc/omap_udc.c b/drivers/usb/gadget/udc/omap_udc.c
deleted file mode 100644
index 1be8c19f2a04..000000000000
--- a/drivers/usb/gadget/udc/omap_udc.c
+++ /dev/null
@@ -1,3001 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * omap_udc.c -- for OMAP full speed udc; most chips support OTG.
- *
- * Copyright (C) 2004 Texas Instruments, Inc.
- * Copyright (C) 2004-2005 David Brownell
- *
- * OMAP2 & DMA support by Kyungmin Park <kyungmin.park@samsung.com>
- */
-
-#undef	DEBUG
-#undef	VERBOSE
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/ioport.h>
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <linux/timer.h>
-#include <linux/list.h>
-#include <linux/interrupt.h>
-#include <linux/proc_fs.h>
-#include <linux/mm.h>
-#include <linux/moduleparam.h>
-#include <linux/platform_device.h>
-#include <linux/usb/ch9.h>
-#include <linux/usb/gadget.h>
-#include <linux/usb/otg.h>
-#include <linux/dma-mapping.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/prefetch.h>
-#include <linux/io.h>
-
-#include <asm/byteorder.h>
-#include <asm/irq.h>
-#include <asm/unaligned.h>
-#include <asm/mach-types.h>
-
-#include <linux/omap-dma.h>
-#include <linux/platform_data/usb-omap1.h>
-
-#include <linux/soc/ti/omap1-usb.h>
-#include <linux/soc/ti/omap1-soc.h>
-#include <linux/soc/ti/omap1-io.h>
-
-#include "omap_udc.h"
-
-#undef	USB_TRACE
-
-/* bulk DMA seems to be behaving for both IN and OUT */
-#define	USE_DMA
-
-/* ISO too */
-#define	USE_ISO
-
-#define	DRIVER_DESC	"OMAP UDC driver"
-#define	DRIVER_VERSION	"4 October 2004"
-
-#define OMAP_DMA_USB_W2FC_TX0		29
-#define OMAP_DMA_USB_W2FC_RX0		26
-
-/*
- * The OMAP UDC needs _very_ early endpoint setup:  before enabling the
- * D+ pullup to allow enumeration.  That's too early for the gadget
- * framework to use from usb_endpoint_enable(), which happens after
- * enumeration as part of activating an interface.  (But if we add an
- * optional new "UDC not yet running" state to the gadget driver model,
- * even just during driver binding, the endpoint autoconfig logic is the
- * natural spot to manufacture new endpoints.)
- *
- * So instead of using endpoint enable calls to control the hardware setup,
- * this driver defines a "fifo mode" parameter.  It's used during driver
- * initialization to choose among a set of pre-defined endpoint configs.
- * See omap_udc_setup() for available modes, or to add others.  That code
- * lives in an init section, so use this driver as a module if you need
- * to change the fifo mode after the kernel boots.
- *
- * Gadget drivers normally ignore endpoints they don't care about, and
- * won't include them in configuration descriptors.  That means only
- * misbehaving hosts would even notice they exist.
- */
-#ifdef	USE_ISO
-static unsigned fifo_mode = 3;
-#else
-static unsigned fifo_mode;
-#endif
-
-/* "modprobe omap_udc fifo_mode=42", or else as a kernel
- * boot parameter "omap_udc:fifo_mode=42"
- */
-module_param(fifo_mode, uint, 0);
-MODULE_PARM_DESC(fifo_mode, "endpoint configuration");
-
-#ifdef	USE_DMA
-static bool use_dma = 1;
-
-/* "modprobe omap_udc use_dma=y", or else as a kernel
- * boot parameter "omap_udc:use_dma=y"
- */
-module_param(use_dma, bool, 0);
-MODULE_PARM_DESC(use_dma, "enable/disable DMA");
-#else	/* !USE_DMA */
-
-/* save a bit of code */
-#define	use_dma		0
-#endif	/* !USE_DMA */
-
-
-static const char driver_name[] = "omap_udc";
-static const char driver_desc[] = DRIVER_DESC;
-
-/*-------------------------------------------------------------------------*/
-
-/* there's a notion of "current endpoint" for modifying endpoint
- * state, and PIO access to its FIFO.
- */
-
-static void use_ep(struct omap_ep *ep, u16 select)
-{
-	u16	num = ep->bEndpointAddress & 0x0f;
-
-	if (ep->bEndpointAddress & USB_DIR_IN)
-		num |= UDC_EP_DIR;
-	omap_writew(num | select, UDC_EP_NUM);
-	/* when select, MUST deselect later !! */
-}
-
-static inline void deselect_ep(void)
-{
-	u16 w;
-
-	w = omap_readw(UDC_EP_NUM);
-	w &= ~UDC_EP_SEL;
-	omap_writew(w, UDC_EP_NUM);
-	/* 6 wait states before TX will happen */
-}
-
-static void dma_channel_claim(struct omap_ep *ep, unsigned preferred);
-
-/*-------------------------------------------------------------------------*/
-
-static int omap_ep_enable(struct usb_ep *_ep,
-		const struct usb_endpoint_descriptor *desc)
-{
-	struct omap_ep	*ep = container_of(_ep, struct omap_ep, ep);
-	struct omap_udc	*udc;
-	unsigned long	flags;
-	u16		maxp;
-
-	/* catch various bogus parameters */
-	if (!_ep || !desc
-			|| desc->bDescriptorType != USB_DT_ENDPOINT
-			|| ep->bEndpointAddress != desc->bEndpointAddress
-			|| ep->maxpacket < usb_endpoint_maxp(desc)) {
-		DBG("%s, bad ep or descriptor\n", __func__);
-		return -EINVAL;
-	}
-	maxp = usb_endpoint_maxp(desc);
-	if ((desc->bmAttributes == USB_ENDPOINT_XFER_BULK
-				&& maxp != ep->maxpacket)
-			|| usb_endpoint_maxp(desc) > ep->maxpacket
-			|| !desc->wMaxPacketSize) {
-		DBG("%s, bad %s maxpacket\n", __func__, _ep->name);
-		return -ERANGE;
-	}
-
-#ifdef	USE_ISO
-	if ((desc->bmAttributes == USB_ENDPOINT_XFER_ISOC
-				&& desc->bInterval != 1)) {
-		/* hardware wants period = 1; USB allows 2^(Interval-1) */
-		DBG("%s, unsupported ISO period %dms\n", _ep->name,
-				1 << (desc->bInterval - 1));
-		return -EDOM;
-	}
-#else
-	if (desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) {
-		DBG("%s, ISO nyet\n", _ep->name);
-		return -EDOM;
-	}
-#endif
-
-	/* xfer types must match, except that interrupt ~= bulk */
-	if (ep->bmAttributes != desc->bmAttributes
-			&& ep->bmAttributes != USB_ENDPOINT_XFER_BULK
-			&& desc->bmAttributes != USB_ENDPOINT_XFER_INT) {
-		DBG("%s, %s type mismatch\n", __func__, _ep->name);
-		return -EINVAL;
-	}
-
-	udc = ep->udc;
-	if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) {
-		DBG("%s, bogus device state\n", __func__);
-		return -ESHUTDOWN;
-	}
-
-	spin_lock_irqsave(&udc->lock, flags);
-
-	ep->ep.desc = desc;
-	ep->irqs = 0;
-	ep->stopped = 0;
-	ep->ep.maxpacket = maxp;
-
-	/* set endpoint to initial state */
-	ep->dma_channel = 0;
-	ep->has_dma = 0;
-	ep->lch = -1;
-	use_ep(ep, UDC_EP_SEL);
-	omap_writew(udc->clr_halt, UDC_CTRL);
-	ep->ackwait = 0;
-	deselect_ep();
-
-	if (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC)
-		list_add(&ep->iso, &udc->iso);
-
-	/* maybe assign a DMA channel to this endpoint */
-	if (use_dma && desc->bmAttributes == USB_ENDPOINT_XFER_BULK)
-		/* FIXME ISO can dma, but prefers first channel */
-		dma_channel_claim(ep, 0);
-
-	/* PIO OUT may RX packets */
-	if (desc->bmAttributes != USB_ENDPOINT_XFER_ISOC
-			&& !ep->has_dma
-			&& !(ep->bEndpointAddress & USB_DIR_IN)) {
-		omap_writew(UDC_SET_FIFO_EN, UDC_CTRL);
-		ep->ackwait = 1 + ep->double_buf;
-	}
-
-	spin_unlock_irqrestore(&udc->lock, flags);
-	VDBG("%s enabled\n", _ep->name);
-	return 0;
-}
-
-static void nuke(struct omap_ep *, int status);
-
-static int omap_ep_disable(struct usb_ep *_ep)
-{
-	struct omap_ep	*ep = container_of(_ep, struct omap_ep, ep);
-	unsigned long	flags;
-
-	if (!_ep || !ep->ep.desc) {
-		DBG("%s, %s not enabled\n", __func__,
-			_ep ? ep->ep.name : NULL);
-		return -EINVAL;
-	}
-
-	spin_lock_irqsave(&ep->udc->lock, flags);
-	ep->ep.desc = NULL;
-	nuke(ep, -ESHUTDOWN);
-	ep->ep.maxpacket = ep->maxpacket;
-	ep->has_dma = 0;
-	omap_writew(UDC_SET_HALT, UDC_CTRL);
-	list_del_init(&ep->iso);
-	del_timer(&ep->timer);
-
-	spin_unlock_irqrestore(&ep->udc->lock, flags);
-
-	VDBG("%s disabled\n", _ep->name);
-	return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static struct usb_request *
-omap_alloc_request(struct usb_ep *ep, gfp_t gfp_flags)
-{
-	struct omap_req	*req;
-
-	req = kzalloc(sizeof(*req), gfp_flags);
-	if (!req)
-		return NULL;
-
-	INIT_LIST_HEAD(&req->queue);
-
-	return &req->req;
-}
-
-static void
-omap_free_request(struct usb_ep *ep, struct usb_request *_req)
-{
-	struct omap_req	*req = container_of(_req, struct omap_req, req);
-
-	kfree(req);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void
-done(struct omap_ep *ep, struct omap_req *req, int status)
-{
-	struct omap_udc		*udc = ep->udc;
-	unsigned		stopped = ep->stopped;
-
-	list_del_init(&req->queue);
-
-	if (req->req.status == -EINPROGRESS)
-		req->req.status = status;
-	else
-		status = req->req.status;
-
-	if (use_dma && ep->has_dma)
-		usb_gadget_unmap_request(&udc->gadget, &req->req,
-				(ep->bEndpointAddress & USB_DIR_IN));
-
-#ifndef	USB_TRACE
-	if (status && status != -ESHUTDOWN)
-#endif
-		VDBG("complete %s req %p stat %d len %u/%u\n",
-			ep->ep.name, &req->req, status,
-			req->req.actual, req->req.length);
-
-	/* don't modify queue heads during completion callback */
-	ep->stopped = 1;
-	spin_unlock(&ep->udc->lock);
-	usb_gadget_giveback_request(&ep->ep, &req->req);
-	spin_lock(&ep->udc->lock);
-	ep->stopped = stopped;
-}
-
-/*-------------------------------------------------------------------------*/
-
-#define UDC_FIFO_FULL		(UDC_NON_ISO_FIFO_FULL | UDC_ISO_FIFO_FULL)
-#define UDC_FIFO_UNWRITABLE	(UDC_EP_HALTED | UDC_FIFO_FULL)
-
-#define FIFO_EMPTY	(UDC_NON_ISO_FIFO_EMPTY | UDC_ISO_FIFO_EMPTY)
-#define FIFO_UNREADABLE (UDC_EP_HALTED | FIFO_EMPTY)
-
-static inline int
-write_packet(u8 *buf, struct omap_req *req, unsigned max)
-{
-	unsigned	len;
-	u16		*wp;
-
-	len = min(req->req.length - req->req.actual, max);
-	req->req.actual += len;
-
-	max = len;
-	if (likely((((int)buf) & 1) == 0)) {
-		wp = (u16 *)buf;
-		while (max >= 2) {
-			omap_writew(*wp++, UDC_DATA);
-			max -= 2;
-		}
-		buf = (u8 *)wp;
-	}
-	while (max--)
-		omap_writeb(*buf++, UDC_DATA);
-	return len;
-}
-
-/* FIXME change r/w fifo calling convention */
-
-
-/* return:  0 = still running, 1 = completed, negative = errno */
-static int write_fifo(struct omap_ep *ep, struct omap_req *req)
-{
-	u8		*buf;
-	unsigned	count;
-	int		is_last;
-	u16		ep_stat;
-
-	buf = req->req.buf + req->req.actual;
-	prefetch(buf);
-
-	/* PIO-IN isn't double buffered except for iso */
-	ep_stat = omap_readw(UDC_STAT_FLG);
-	if (ep_stat & UDC_FIFO_UNWRITABLE)
-		return 0;
-
-	count = ep->ep.maxpacket;
-	count = write_packet(buf, req, count);
-	omap_writew(UDC_SET_FIFO_EN, UDC_CTRL);
-	ep->ackwait = 1;
-
-	/* last packet is often short (sometimes a zlp) */
-	if (count != ep->ep.maxpacket)
-		is_last = 1;
-	else if (req->req.length == req->req.actual
-			&& !req->req.zero)
-		is_last = 1;
-	else
-		is_last = 0;
-
-	/* NOTE:  requests complete when all IN data is in a
-	 * FIFO (or sometimes later, if a zlp was needed).
-	 * Use usb_ep_fifo_status() where needed.
-	 */
-	if (is_last)
-		done(ep, req, 0);
-	return is_last;
-}
-
-static inline int
-read_packet(u8 *buf, struct omap_req *req, unsigned avail)
-{
-	unsigned	len;
-	u16		*wp;
-
-	len = min(req->req.length - req->req.actual, avail);
-	req->req.actual += len;
-	avail = len;
-
-	if (likely((((int)buf) & 1) == 0)) {
-		wp = (u16 *)buf;
-		while (avail >= 2) {
-			*wp++ = omap_readw(UDC_DATA);
-			avail -= 2;
-		}
-		buf = (u8 *)wp;
-	}
-	while (avail--)
-		*buf++ = omap_readb(UDC_DATA);
-	return len;
-}
-
-/* return:  0 = still running, 1 = queue empty, negative = errno */
-static int read_fifo(struct omap_ep *ep, struct omap_req *req)
-{
-	u8		*buf;
-	unsigned	count, avail;
-	int		is_last;
-
-	buf = req->req.buf + req->req.actual;
-	prefetchw(buf);
-
-	for (;;) {
-		u16	ep_stat = omap_readw(UDC_STAT_FLG);
-
-		is_last = 0;
-		if (ep_stat & FIFO_EMPTY) {
-			if (!ep->double_buf)
-				break;
-			ep->fnf = 1;
-		}
-		if (ep_stat & UDC_EP_HALTED)
-			break;
-
-		if (ep_stat & UDC_FIFO_FULL)
-			avail = ep->ep.maxpacket;
-		else  {
-			avail = omap_readw(UDC_RXFSTAT);
-			ep->fnf = ep->double_buf;
-		}
-		count = read_packet(buf, req, avail);
-
-		/* partial packet reads may not be errors */
-		if (count < ep->ep.maxpacket) {
-			is_last = 1;
-			/* overflowed this request?  flush extra data */
-			if (count != avail) {
-				req->req.status = -EOVERFLOW;
-				avail -= count;
-				while (avail--)
-					omap_readw(UDC_DATA);
-			}
-		} else if (req->req.length == req->req.actual)
-			is_last = 1;
-		else
-			is_last = 0;
-
-		if (!ep->bEndpointAddress)
-			break;
-		if (is_last)
-			done(ep, req, 0);
-		break;
-	}
-	return is_last;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static u16 dma_src_len(struct omap_ep *ep, dma_addr_t start)
-{
-	dma_addr_t	end;
-
-	/* IN-DMA needs this on fault/cancel paths, so 15xx misreports
-	 * the last transfer's bytecount by more than a FIFO's worth.
-	 */
-	if (cpu_is_omap15xx())
-		return 0;
-
-	end = omap_get_dma_src_pos(ep->lch);
-	if (end == ep->dma_counter)
-		return 0;
-
-	end |= start & (0xffff << 16);
-	if (end < start)
-		end += 0x10000;
-	return end - start;
-}
-
-static u16 dma_dest_len(struct omap_ep *ep, dma_addr_t start)
-{
-	dma_addr_t	end;
-
-	end = omap_get_dma_dst_pos(ep->lch);
-	if (end == ep->dma_counter)
-		return 0;
-
-	end |= start & (0xffff << 16);
-	if (cpu_is_omap15xx())
-		end++;
-	if (end < start)
-		end += 0x10000;
-	return end - start;
-}
-
-
-/* Each USB transfer request using DMA maps to one or more DMA transfers.
- * When DMA completion isn't request completion, the UDC continues with
- * the next DMA transfer for that USB transfer.
- */
-
-static void next_in_dma(struct omap_ep *ep, struct omap_req *req)
-{
-	u16		txdma_ctrl, w;
-	unsigned	length = req->req.length - req->req.actual;
-	const int	sync_mode = cpu_is_omap15xx()
-				? OMAP_DMA_SYNC_FRAME
-				: OMAP_DMA_SYNC_ELEMENT;
-	int		dma_trigger = 0;
-
-	/* measure length in either bytes or packets */
-	if ((cpu_is_omap16xx() && length <= UDC_TXN_TSC)
-			|| (cpu_is_omap15xx() && length < ep->maxpacket)) {
-		txdma_ctrl = UDC_TXN_EOT | length;
-		omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S8,
-				length, 1, sync_mode, dma_trigger, 0);
-	} else {
-		length = min(length / ep->maxpacket,
-				(unsigned) UDC_TXN_TSC + 1);
-		txdma_ctrl = length;
-		omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S16,
-				ep->ep.maxpacket >> 1, length, sync_mode,
-				dma_trigger, 0);
-		length *= ep->maxpacket;
-	}
-	omap_set_dma_src_params(ep->lch, OMAP_DMA_PORT_EMIFF,
-		OMAP_DMA_AMODE_POST_INC, req->req.dma + req->req.actual,
-		0, 0);
-
-	omap_start_dma(ep->lch);
-	ep->dma_counter = omap_get_dma_src_pos(ep->lch);
-	w = omap_readw(UDC_DMA_IRQ_EN);
-	w |= UDC_TX_DONE_IE(ep->dma_channel);
-	omap_writew(w, UDC_DMA_IRQ_EN);
-	omap_writew(UDC_TXN_START | txdma_ctrl, UDC_TXDMA(ep->dma_channel));
-	req->dma_bytes = length;
-}
-
-static void finish_in_dma(struct omap_ep *ep, struct omap_req *req, int status)
-{
-	u16 w;
-
-	if (status == 0) {
-		req->req.actual += req->dma_bytes;
-
-		/* return if this request needs to send data or zlp */
-		if (req->req.actual < req->req.length)
-			return;
-		if (req->req.zero
-				&& req->dma_bytes != 0
-				&& (req->req.actual % ep->maxpacket) == 0)
-			return;
-	} else
-		req->req.actual += dma_src_len(ep, req->req.dma
-							+ req->req.actual);
-
-	/* tx completion */
-	omap_stop_dma(ep->lch);
-	w = omap_readw(UDC_DMA_IRQ_EN);
-	w &= ~UDC_TX_DONE_IE(ep->dma_channel);
-	omap_writew(w, UDC_DMA_IRQ_EN);
-	done(ep, req, status);
-}
-
-static void next_out_dma(struct omap_ep *ep, struct omap_req *req)
-{
-	unsigned packets = req->req.length - req->req.actual;
-	int dma_trigger = 0;
-	u16 w;
-
-	/* set up this DMA transfer, enable the fifo, start */
-	packets /= ep->ep.maxpacket;
-	packets = min(packets, (unsigned)UDC_RXN_TC + 1);
-	req->dma_bytes = packets * ep->ep.maxpacket;
-	omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S16,
-			ep->ep.maxpacket >> 1, packets,
-			OMAP_DMA_SYNC_ELEMENT,
-			dma_trigger, 0);
-	omap_set_dma_dest_params(ep->lch, OMAP_DMA_PORT_EMIFF,
-		OMAP_DMA_AMODE_POST_INC, req->req.dma + req->req.actual,
-		0, 0);
-	ep->dma_counter = omap_get_dma_dst_pos(ep->lch);
-
-	omap_writew(UDC_RXN_STOP | (packets - 1), UDC_RXDMA(ep->dma_channel));
-	w = omap_readw(UDC_DMA_IRQ_EN);
-	w |= UDC_RX_EOT_IE(ep->dma_channel);
-	omap_writew(w, UDC_DMA_IRQ_EN);
-	omap_writew(ep->bEndpointAddress & 0xf, UDC_EP_NUM);
-	omap_writew(UDC_SET_FIFO_EN, UDC_CTRL);
-
-	omap_start_dma(ep->lch);
-}
-
-static void
-finish_out_dma(struct omap_ep *ep, struct omap_req *req, int status, int one)
-{
-	u16	count, w;
-
-	if (status == 0)
-		ep->dma_counter = (u16) (req->req.dma + req->req.actual);
-	count = dma_dest_len(ep, req->req.dma + req->req.actual);
-	count += req->req.actual;
-	if (one)
-		count--;
-	if (count <= req->req.length)
-		req->req.actual = count;
-
-	if (count != req->dma_bytes || status)
-		omap_stop_dma(ep->lch);
-
-	/* if this wasn't short, request may need another transfer */
-	else if (req->req.actual < req->req.length)
-		return;
-
-	/* rx completion */
-	w = omap_readw(UDC_DMA_IRQ_EN);
-	w &= ~UDC_RX_EOT_IE(ep->dma_channel);
-	omap_writew(w, UDC_DMA_IRQ_EN);
-	done(ep, req, status);
-}
-
-static void dma_irq(struct omap_udc *udc, u16 irq_src)
-{
-	u16		dman_stat = omap_readw(UDC_DMAN_STAT);
-	struct omap_ep	*ep;
-	struct omap_req	*req;
-
-	/* IN dma: tx to host */
-	if (irq_src & UDC_TXN_DONE) {
-		ep = &udc->ep[16 + UDC_DMA_TX_SRC(dman_stat)];
-		ep->irqs++;
-		/* can see TXN_DONE after dma abort */
-		if (!list_empty(&ep->queue)) {
-			req = container_of(ep->queue.next,
-						struct omap_req, queue);
-			finish_in_dma(ep, req, 0);
-		}
-		omap_writew(UDC_TXN_DONE, UDC_IRQ_SRC);
-
-		if (!list_empty(&ep->queue)) {
-			req = container_of(ep->queue.next,
-					struct omap_req, queue);
-			next_in_dma(ep, req);
-		}
-	}
-
-	/* OUT dma: rx from host */
-	if (irq_src & UDC_RXN_EOT) {
-		ep = &udc->ep[UDC_DMA_RX_SRC(dman_stat)];
-		ep->irqs++;
-		/* can see RXN_EOT after dma abort */
-		if (!list_empty(&ep->queue)) {
-			req = container_of(ep->queue.next,
-					struct omap_req, queue);
-			finish_out_dma(ep, req, 0, dman_stat & UDC_DMA_RX_SB);
-		}
-		omap_writew(UDC_RXN_EOT, UDC_IRQ_SRC);
-
-		if (!list_empty(&ep->queue)) {
-			req = container_of(ep->queue.next,
-					struct omap_req, queue);
-			next_out_dma(ep, req);
-		}
-	}
-
-	if (irq_src & UDC_RXN_CNT) {
-		ep = &udc->ep[UDC_DMA_RX_SRC(dman_stat)];
-		ep->irqs++;
-		/* omap15xx does this unasked... */
-		VDBG("%s, RX_CNT irq?\n", ep->ep.name);
-		omap_writew(UDC_RXN_CNT, UDC_IRQ_SRC);
-	}
-}
-
-static void dma_error(int lch, u16 ch_status, void *data)
-{
-	struct omap_ep	*ep = data;
-
-	/* if ch_status & OMAP_DMA_DROP_IRQ ... */
-	/* if ch_status & OMAP1_DMA_TOUT_IRQ ... */
-	ERR("%s dma error, lch %d status %02x\n", ep->ep.name, lch, ch_status);
-
-	/* complete current transfer ... */
-}
-
-static void dma_channel_claim(struct omap_ep *ep, unsigned channel)
-{
-	u16	reg;
-	int	status, restart, is_in;
-	int	dma_channel;
-
-	is_in = ep->bEndpointAddress & USB_DIR_IN;
-	if (is_in)
-		reg = omap_readw(UDC_TXDMA_CFG);
-	else
-		reg = omap_readw(UDC_RXDMA_CFG);
-	reg |= UDC_DMA_REQ;		/* "pulse" activated */
-
-	ep->dma_channel = 0;
-	ep->lch = -1;
-	if (channel == 0 || channel > 3) {
-		if ((reg & 0x0f00) == 0)
-			channel = 3;
-		else if ((reg & 0x00f0) == 0)
-			channel = 2;
-		else if ((reg & 0x000f) == 0)	/* preferred for ISO */
-			channel = 1;
-		else {
-			status = -EMLINK;
-			goto just_restart;
-		}
-	}
-	reg |= (0x0f & ep->bEndpointAddress) << (4 * (channel - 1));
-	ep->dma_channel = channel;
-
-	if (is_in) {
-		dma_channel = OMAP_DMA_USB_W2FC_TX0 - 1 + channel;
-		status = omap_request_dma(dma_channel,
-			ep->ep.name, dma_error, ep, &ep->lch);
-		if (status == 0) {
-			omap_writew(reg, UDC_TXDMA_CFG);
-			/* EMIFF or SDRC */
-			omap_set_dma_src_burst_mode(ep->lch,
-						OMAP_DMA_DATA_BURST_4);
-			omap_set_dma_src_data_pack(ep->lch, 1);
-			/* TIPB */
-			omap_set_dma_dest_params(ep->lch,
-				OMAP_DMA_PORT_TIPB,
-				OMAP_DMA_AMODE_CONSTANT,
-				UDC_DATA_DMA,
-				0, 0);
-		}
-	} else {
-		dma_channel = OMAP_DMA_USB_W2FC_RX0 - 1 + channel;
-		status = omap_request_dma(dma_channel,
-			ep->ep.name, dma_error, ep, &ep->lch);
-		if (status == 0) {
-			omap_writew(reg, UDC_RXDMA_CFG);
-			/* TIPB */
-			omap_set_dma_src_params(ep->lch,
-				OMAP_DMA_PORT_TIPB,
-				OMAP_DMA_AMODE_CONSTANT,
-				UDC_DATA_DMA,
-				0, 0);
-			/* EMIFF or SDRC */
-			omap_set_dma_dest_burst_mode(ep->lch,
-						OMAP_DMA_DATA_BURST_4);
-			omap_set_dma_dest_data_pack(ep->lch, 1);
-		}
-	}
-	if (status)
-		ep->dma_channel = 0;
-	else {
-		ep->has_dma = 1;
-		omap_disable_dma_irq(ep->lch, OMAP_DMA_BLOCK_IRQ);
-
-		/* channel type P: hw synch (fifo) */
-		if (!cpu_is_omap15xx())
-			omap_set_dma_channel_mode(ep->lch, OMAP_DMA_LCH_P);
-	}
-
-just_restart:
-	/* restart any queue, even if the claim failed  */
-	restart = !ep->stopped && !list_empty(&ep->queue);
-
-	if (status)
-		DBG("%s no dma channel: %d%s\n", ep->ep.name, status,
-			restart ? " (restart)" : "");
-	else
-		DBG("%s claimed %cxdma%d lch %d%s\n", ep->ep.name,
-			is_in ? 't' : 'r',
-			ep->dma_channel - 1, ep->lch,
-			restart ? " (restart)" : "");
-
-	if (restart) {
-		struct omap_req	*req;
-		req = container_of(ep->queue.next, struct omap_req, queue);
-		if (ep->has_dma)
-			(is_in ? next_in_dma : next_out_dma)(ep, req);
-		else {
-			use_ep(ep, UDC_EP_SEL);
-			(is_in ? write_fifo : read_fifo)(ep, req);
-			deselect_ep();
-			if (!is_in) {
-				omap_writew(UDC_SET_FIFO_EN, UDC_CTRL);
-				ep->ackwait = 1 + ep->double_buf;
-			}
-			/* IN: 6 wait states before it'll tx */
-		}
-	}
-}
-
-static void dma_channel_release(struct omap_ep *ep)
-{
-	int		shift = 4 * (ep->dma_channel - 1);
-	u16		mask = 0x0f << shift;
-	struct omap_req	*req;
-	int		active;
-
-	/* abort any active usb transfer request */
-	if (!list_empty(&ep->queue))
-		req = container_of(ep->queue.next, struct omap_req, queue);
-	else
-		req = NULL;
-
-	active = omap_get_dma_active_status(ep->lch);
-
-	DBG("%s release %s %cxdma%d %p\n", ep->ep.name,
-			active ? "active" : "idle",
-			(ep->bEndpointAddress & USB_DIR_IN) ? 't' : 'r',
-			ep->dma_channel - 1, req);
-
-	/* NOTE: re-setting RX_REQ/TX_REQ because of a chip bug (before
-	 * OMAP 1710 ES2.0) where reading the DMA_CFG can clear them.
-	 */
-
-	/* wait till current packet DMA finishes, and fifo empties */
-	if (ep->bEndpointAddress & USB_DIR_IN) {
-		omap_writew((omap_readw(UDC_TXDMA_CFG) & ~mask) | UDC_DMA_REQ,
-					UDC_TXDMA_CFG);
-
-		if (req) {
-			finish_in_dma(ep, req, -ECONNRESET);
-
-			/* clear FIFO; hosts probably won't empty it */
-			use_ep(ep, UDC_EP_SEL);
-			omap_writew(UDC_CLR_EP, UDC_CTRL);
-			deselect_ep();
-		}
-		while (omap_readw(UDC_TXDMA_CFG) & mask)
-			udelay(10);
-	} else {
-		omap_writew((omap_readw(UDC_RXDMA_CFG) & ~mask) | UDC_DMA_REQ,
-					UDC_RXDMA_CFG);
-
-		/* dma empties the fifo */
-		while (omap_readw(UDC_RXDMA_CFG) & mask)
-			udelay(10);
-		if (req)
-			finish_out_dma(ep, req, -ECONNRESET, 0);
-	}
-	omap_free_dma(ep->lch);
-	ep->dma_channel = 0;
-	ep->lch = -1;
-	/* has_dma still set, till endpoint is fully quiesced */
-}
-
-
-/*-------------------------------------------------------------------------*/
-
-static int
-omap_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
-{
-	struct omap_ep	*ep = container_of(_ep, struct omap_ep, ep);
-	struct omap_req	*req = container_of(_req, struct omap_req, req);
-	struct omap_udc	*udc;
-	unsigned long	flags;
-	int		is_iso = 0;
-
-	/* catch various bogus parameters */
-	if (!_req || !req->req.complete || !req->req.buf
-			|| !list_empty(&req->queue)) {
-		DBG("%s, bad params\n", __func__);
-		return -EINVAL;
-	}
-	if (!_ep || (!ep->ep.desc && ep->bEndpointAddress)) {
-		DBG("%s, bad ep\n", __func__);
-		return -EINVAL;
-	}
-	if (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC) {
-		if (req->req.length > ep->ep.maxpacket)
-			return -EMSGSIZE;
-		is_iso = 1;
-	}
-
-	/* this isn't bogus, but OMAP DMA isn't the only hardware to
-	 * have a hard time with partial packet reads...  reject it.
-	 */
-	if (use_dma
-			&& ep->has_dma
-			&& ep->bEndpointAddress != 0
-			&& (ep->bEndpointAddress & USB_DIR_IN) == 0
-			&& (req->req.length % ep->ep.maxpacket) != 0) {
-		DBG("%s, no partial packet OUT reads\n", __func__);
-		return -EMSGSIZE;
-	}
-
-	udc = ep->udc;
-	if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN)
-		return -ESHUTDOWN;
-
-	if (use_dma && ep->has_dma)
-		usb_gadget_map_request(&udc->gadget, &req->req,
-				(ep->bEndpointAddress & USB_DIR_IN));
-
-	VDBG("%s queue req %p, len %d buf %p\n",
-		ep->ep.name, _req, _req->length, _req->buf);
-
-	spin_lock_irqsave(&udc->lock, flags);
-
-	req->req.status = -EINPROGRESS;
-	req->req.actual = 0;
-
-	/* maybe kickstart non-iso i/o queues */
-	if (is_iso) {
-		u16 w;
-
-		w = omap_readw(UDC_IRQ_EN);
-		w |= UDC_SOF_IE;
-		omap_writew(w, UDC_IRQ_EN);
-	} else if (list_empty(&ep->queue) && !ep->stopped && !ep->ackwait) {
-		int	is_in;
-
-		if (ep->bEndpointAddress == 0) {
-			if (!udc->ep0_pending || !list_empty(&ep->queue)) {
-				spin_unlock_irqrestore(&udc->lock, flags);
-				return -EL2HLT;
-			}
-
-			/* empty DATA stage? */
-			is_in = udc->ep0_in;
-			if (!req->req.length) {
-
-				/* chip became CONFIGURED or ADDRESSED
-				 * earlier; drivers may already have queued
-				 * requests to non-control endpoints
-				 */
-				if (udc->ep0_set_config) {
-					u16	irq_en = omap_readw(UDC_IRQ_EN);
-
-					irq_en |= UDC_DS_CHG_IE | UDC_EP0_IE;
-					if (!udc->ep0_reset_config)
-						irq_en |= UDC_EPN_RX_IE
-							| UDC_EPN_TX_IE;
-					omap_writew(irq_en, UDC_IRQ_EN);
-				}
-
-				/* STATUS for zero length DATA stages is
-				 * always an IN ... even for IN transfers,
-				 * a weird case which seem to stall OMAP.
-				 */
-				omap_writew(UDC_EP_SEL | UDC_EP_DIR,
-						UDC_EP_NUM);
-				omap_writew(UDC_CLR_EP, UDC_CTRL);
-				omap_writew(UDC_SET_FIFO_EN, UDC_CTRL);
-				omap_writew(UDC_EP_DIR, UDC_EP_NUM);
-
-				/* cleanup */
-				udc->ep0_pending = 0;
-				done(ep, req, 0);
-				req = NULL;
-
-			/* non-empty DATA stage */
-			} else if (is_in) {
-				omap_writew(UDC_EP_SEL | UDC_EP_DIR,
-						UDC_EP_NUM);
-			} else {
-				if (udc->ep0_setup)
-					goto irq_wait;
-				omap_writew(UDC_EP_SEL, UDC_EP_NUM);
-			}
-		} else {
-			is_in = ep->bEndpointAddress & USB_DIR_IN;
-			if (!ep->has_dma)
-				use_ep(ep, UDC_EP_SEL);
-			/* if ISO: SOF IRQs must be enabled/disabled! */
-		}
-
-		if (ep->has_dma)
-			(is_in ? next_in_dma : next_out_dma)(ep, req);
-		else if (req) {
-			if ((is_in ? write_fifo : read_fifo)(ep, req) == 1)
-				req = NULL;
-			deselect_ep();
-			if (!is_in) {
-				omap_writew(UDC_SET_FIFO_EN, UDC_CTRL);
-				ep->ackwait = 1 + ep->double_buf;
-			}
-			/* IN: 6 wait states before it'll tx */
-		}
-	}
-
-irq_wait:
-	/* irq handler advances the queue */
-	if (req != NULL)
-		list_add_tail(&req->queue, &ep->queue);
-	spin_unlock_irqrestore(&udc->lock, flags);
-
-	return 0;
-}
-
-static int omap_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
-{
-	struct omap_ep	*ep = container_of(_ep, struct omap_ep, ep);
-	struct omap_req	*req = NULL, *iter;
-	unsigned long	flags;
-
-	if (!_ep || !_req)
-		return -EINVAL;
-
-	spin_lock_irqsave(&ep->udc->lock, flags);
-
-	/* make sure it's actually queued on this endpoint */
-	list_for_each_entry(iter, &ep->queue, queue) {
-		if (&iter->req != _req)
-			continue;
-		req = iter;
-		break;
-	}
-	if (!req) {
-		spin_unlock_irqrestore(&ep->udc->lock, flags);
-		return -EINVAL;
-	}
-
-	if (use_dma && ep->dma_channel && ep->queue.next == &req->queue) {
-		int channel = ep->dma_channel;
-
-		/* releasing the channel cancels the request,
-		 * reclaiming the channel restarts the queue
-		 */
-		dma_channel_release(ep);
-		dma_channel_claim(ep, channel);
-	} else
-		done(ep, req, -ECONNRESET);
-	spin_unlock_irqrestore(&ep->udc->lock, flags);
-	return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int omap_ep_set_halt(struct usb_ep *_ep, int value)
-{
-	struct omap_ep	*ep = container_of(_ep, struct omap_ep, ep);
-	unsigned long	flags;
-	int		status = -EOPNOTSUPP;
-
-	spin_lock_irqsave(&ep->udc->lock, flags);
-
-	/* just use protocol stalls for ep0; real halts are annoying */
-	if (ep->bEndpointAddress == 0) {
-		if (!ep->udc->ep0_pending)
-			status = -EINVAL;
-		else if (value) {
-			if (ep->udc->ep0_set_config) {
-				WARNING("error changing config?\n");
-				omap_writew(UDC_CLR_CFG, UDC_SYSCON2);
-			}
-			omap_writew(UDC_STALL_CMD, UDC_SYSCON2);
-			ep->udc->ep0_pending = 0;
-			status = 0;
-		} else /* NOP */
-			status = 0;
-
-	/* otherwise, all active non-ISO endpoints can halt */
-	} else if (ep->bmAttributes != USB_ENDPOINT_XFER_ISOC && ep->ep.desc) {
-
-		/* IN endpoints must already be idle */
-		if ((ep->bEndpointAddress & USB_DIR_IN)
-				&& !list_empty(&ep->queue)) {
-			status = -EAGAIN;
-			goto done;
-		}
-
-		if (value) {
-			int	channel;
-
-			if (use_dma && ep->dma_channel
-					&& !list_empty(&ep->queue)) {
-				channel = ep->dma_channel;
-				dma_channel_release(ep);
-			} else
-				channel = 0;
-
-			use_ep(ep, UDC_EP_SEL);
-			if (omap_readw(UDC_STAT_FLG) & UDC_NON_ISO_FIFO_EMPTY) {
-				omap_writew(UDC_SET_HALT, UDC_CTRL);
-				status = 0;
-			} else
-				status = -EAGAIN;
-			deselect_ep();
-
-			if (channel)
-				dma_channel_claim(ep, channel);
-		} else {
-			use_ep(ep, 0);
-			omap_writew(ep->udc->clr_halt, UDC_CTRL);
-			ep->ackwait = 0;
-			if (!(ep->bEndpointAddress & USB_DIR_IN)) {
-				omap_writew(UDC_SET_FIFO_EN, UDC_CTRL);
-				ep->ackwait = 1 + ep->double_buf;
-			}
-		}
-	}
-done:
-	VDBG("%s %s halt stat %d\n", ep->ep.name,
-		value ? "set" : "clear", status);
-
-	spin_unlock_irqrestore(&ep->udc->lock, flags);
-	return status;
-}
-
-static const struct usb_ep_ops omap_ep_ops = {
-	.enable		= omap_ep_enable,
-	.disable	= omap_ep_disable,
-
-	.alloc_request	= omap_alloc_request,
-	.free_request	= omap_free_request,
-
-	.queue		= omap_ep_queue,
-	.dequeue	= omap_ep_dequeue,
-
-	.set_halt	= omap_ep_set_halt,
-	/* fifo_status ... report bytes in fifo */
-	/* fifo_flush ... flush fifo */
-};
-
-/*-------------------------------------------------------------------------*/
-
-static int omap_get_frame(struct usb_gadget *gadget)
-{
-	u16	sof = omap_readw(UDC_SOF);
-	return (sof & UDC_TS_OK) ? (sof & UDC_TS) : -EL2NSYNC;
-}
-
-static int omap_wakeup(struct usb_gadget *gadget)
-{
-	struct omap_udc	*udc;
-	unsigned long	flags;
-	int		retval = -EHOSTUNREACH;
-
-	udc = container_of(gadget, struct omap_udc, gadget);
-
-	spin_lock_irqsave(&udc->lock, flags);
-	if (udc->devstat & UDC_SUS) {
-		/* NOTE:  OTG spec erratum says that OTG devices may
-		 * issue wakeups without host enable.
-		 */
-		if (udc->devstat & (UDC_B_HNP_ENABLE|UDC_R_WK_OK)) {
-			DBG("remote wakeup...\n");
-			omap_writew(UDC_RMT_WKP, UDC_SYSCON2);
-			retval = 0;
-		}
-
-	/* NOTE:  non-OTG systems may use SRP TOO... */
-	} else if (!(udc->devstat & UDC_ATT)) {
-		if (!IS_ERR_OR_NULL(udc->transceiver))
-			retval = otg_start_srp(udc->transceiver->otg);
-	}
-	spin_unlock_irqrestore(&udc->lock, flags);
-
-	return retval;
-}
-
-static int
-omap_set_selfpowered(struct usb_gadget *gadget, int is_selfpowered)
-{
-	struct omap_udc	*udc;
-	unsigned long	flags;
-	u16		syscon1;
-
-	gadget->is_selfpowered = (is_selfpowered != 0);
-	udc = container_of(gadget, struct omap_udc, gadget);
-	spin_lock_irqsave(&udc->lock, flags);
-	syscon1 = omap_readw(UDC_SYSCON1);
-	if (is_selfpowered)
-		syscon1 |= UDC_SELF_PWR;
-	else
-		syscon1 &= ~UDC_SELF_PWR;
-	omap_writew(syscon1, UDC_SYSCON1);
-	spin_unlock_irqrestore(&udc->lock, flags);
-
-	return 0;
-}
-
-static int can_pullup(struct omap_udc *udc)
-{
-	return udc->driver && udc->softconnect && udc->vbus_active;
-}
-
-static void pullup_enable(struct omap_udc *udc)
-{
-	u16 w;
-
-	w = omap_readw(UDC_SYSCON1);
-	w |= UDC_PULLUP_EN;
-	omap_writew(w, UDC_SYSCON1);
-	if (!gadget_is_otg(&udc->gadget) && !cpu_is_omap15xx()) {
-		u32 l;
-
-		l = omap_readl(OTG_CTRL);
-		l |= OTG_BSESSVLD;
-		omap_writel(l, OTG_CTRL);
-	}
-	omap_writew(UDC_DS_CHG_IE, UDC_IRQ_EN);
-}
-
-static void pullup_disable(struct omap_udc *udc)
-{
-	u16 w;
-
-	if (!gadget_is_otg(&udc->gadget) && !cpu_is_omap15xx()) {
-		u32 l;
-
-		l = omap_readl(OTG_CTRL);
-		l &= ~OTG_BSESSVLD;
-		omap_writel(l, OTG_CTRL);
-	}
-	omap_writew(UDC_DS_CHG_IE, UDC_IRQ_EN);
-	w = omap_readw(UDC_SYSCON1);
-	w &= ~UDC_PULLUP_EN;
-	omap_writew(w, UDC_SYSCON1);
-}
-
-static struct omap_udc *udc;
-
-static void omap_udc_enable_clock(int enable)
-{
-	if (udc == NULL || udc->dc_clk == NULL || udc->hhc_clk == NULL)
-		return;
-
-	if (enable) {
-		clk_enable(udc->dc_clk);
-		clk_enable(udc->hhc_clk);
-		udelay(100);
-	} else {
-		clk_disable(udc->hhc_clk);
-		clk_disable(udc->dc_clk);
-	}
-}
-
-/*
- * Called by whatever detects VBUS sessions:  external transceiver
- * driver, or maybe GPIO0 VBUS IRQ.  May request 48 MHz clock.
- */
-static int omap_vbus_session(struct usb_gadget *gadget, int is_active)
-{
-	struct omap_udc	*udc;
-	unsigned long	flags;
-	u32 l;
-
-	udc = container_of(gadget, struct omap_udc, gadget);
-	spin_lock_irqsave(&udc->lock, flags);
-	VDBG("VBUS %s\n", is_active ? "on" : "off");
-	udc->vbus_active = (is_active != 0);
-	if (cpu_is_omap15xx()) {
-		/* "software" detect, ignored if !VBUS_MODE_1510 */
-		l = omap_readl(FUNC_MUX_CTRL_0);
-		if (is_active)
-			l |= VBUS_CTRL_1510;
-		else
-			l &= ~VBUS_CTRL_1510;
-		omap_writel(l, FUNC_MUX_CTRL_0);
-	}
-	if (udc->dc_clk != NULL && is_active) {
-		if (!udc->clk_requested) {
-			omap_udc_enable_clock(1);
-			udc->clk_requested = 1;
-		}
-	}
-	if (can_pullup(udc))
-		pullup_enable(udc);
-	else
-		pullup_disable(udc);
-	if (udc->dc_clk != NULL && !is_active) {
-		if (udc->clk_requested) {
-			omap_udc_enable_clock(0);
-			udc->clk_requested = 0;
-		}
-	}
-	spin_unlock_irqrestore(&udc->lock, flags);
-	return 0;
-}
-
-static int omap_vbus_draw(struct usb_gadget *gadget, unsigned mA)
-{
-	struct omap_udc	*udc;
-
-	udc = container_of(gadget, struct omap_udc, gadget);
-	if (!IS_ERR_OR_NULL(udc->transceiver))
-		return usb_phy_set_power(udc->transceiver, mA);
-	return -EOPNOTSUPP;
-}
-
-static int omap_pullup(struct usb_gadget *gadget, int is_on)
-{
-	struct omap_udc	*udc;
-	unsigned long	flags;
-
-	udc = container_of(gadget, struct omap_udc, gadget);
-	spin_lock_irqsave(&udc->lock, flags);
-	udc->softconnect = (is_on != 0);
-	if (can_pullup(udc))
-		pullup_enable(udc);
-	else
-		pullup_disable(udc);
-	spin_unlock_irqrestore(&udc->lock, flags);
-	return 0;
-}
-
-static int omap_udc_start(struct usb_gadget *g,
-		struct usb_gadget_driver *driver);
-static int omap_udc_stop(struct usb_gadget *g);
-
-static const struct usb_gadget_ops omap_gadget_ops = {
-	.get_frame		= omap_get_frame,
-	.wakeup			= omap_wakeup,
-	.set_selfpowered	= omap_set_selfpowered,
-	.vbus_session		= omap_vbus_session,
-	.vbus_draw		= omap_vbus_draw,
-	.pullup			= omap_pullup,
-	.udc_start		= omap_udc_start,
-	.udc_stop		= omap_udc_stop,
-};
-
-/*-------------------------------------------------------------------------*/
-
-/* dequeue ALL requests; caller holds udc->lock */
-static void nuke(struct omap_ep *ep, int status)
-{
-	struct omap_req	*req;
-
-	ep->stopped = 1;
-
-	if (use_dma && ep->dma_channel)
-		dma_channel_release(ep);
-
-	use_ep(ep, 0);
-	omap_writew(UDC_CLR_EP, UDC_CTRL);
-	if (ep->bEndpointAddress && ep->bmAttributes != USB_ENDPOINT_XFER_ISOC)
-		omap_writew(UDC_SET_HALT, UDC_CTRL);
-
-	while (!list_empty(&ep->queue)) {
-		req = list_entry(ep->queue.next, struct omap_req, queue);
-		done(ep, req, status);
-	}
-}
-
-/* caller holds udc->lock */
-static void udc_quiesce(struct omap_udc *udc)
-{
-	struct omap_ep	*ep;
-
-	udc->gadget.speed = USB_SPEED_UNKNOWN;
-	nuke(&udc->ep[0], -ESHUTDOWN);
-	list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list)
-		nuke(ep, -ESHUTDOWN);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void update_otg(struct omap_udc *udc)
-{
-	u16	devstat;
-
-	if (!gadget_is_otg(&udc->gadget))
-		return;
-
-	if (omap_readl(OTG_CTRL) & OTG_ID)
-		devstat = omap_readw(UDC_DEVSTAT);
-	else
-		devstat = 0;
-
-	udc->gadget.b_hnp_enable = !!(devstat & UDC_B_HNP_ENABLE);
-	udc->gadget.a_hnp_support = !!(devstat & UDC_A_HNP_SUPPORT);
-	udc->gadget.a_alt_hnp_support = !!(devstat & UDC_A_ALT_HNP_SUPPORT);
-
-	/* Enable HNP early, avoiding races on suspend irq path.
-	 * ASSUMES OTG state machine B_BUS_REQ input is true.
-	 */
-	if (udc->gadget.b_hnp_enable) {
-		u32 l;
-
-		l = omap_readl(OTG_CTRL);
-		l |= OTG_B_HNPEN | OTG_B_BUSREQ;
-		l &= ~OTG_PULLUP;
-		omap_writel(l, OTG_CTRL);
-	}
-}
-
-static void ep0_irq(struct omap_udc *udc, u16 irq_src)
-{
-	struct omap_ep	*ep0 = &udc->ep[0];
-	struct omap_req	*req = NULL;
-
-	ep0->irqs++;
-
-	/* Clear any pending requests and then scrub any rx/tx state
-	 * before starting to handle the SETUP request.
-	 */
-	if (irq_src & UDC_SETUP) {
-		u16	ack = irq_src & (UDC_EP0_TX|UDC_EP0_RX);
-
-		nuke(ep0, 0);
-		if (ack) {
-			omap_writew(ack, UDC_IRQ_SRC);
-			irq_src = UDC_SETUP;
-		}
-	}
-
-	/* IN/OUT packets mean we're in the DATA or STATUS stage.
-	 * This driver uses only uses protocol stalls (ep0 never halts),
-	 * and if we got this far the gadget driver already had a
-	 * chance to stall.  Tries to be forgiving of host oddities.
-	 *
-	 * NOTE:  the last chance gadget drivers have to stall control
-	 * requests is during their request completion callback.
-	 */
-	if (!list_empty(&ep0->queue))
-		req = container_of(ep0->queue.next, struct omap_req, queue);
-
-	/* IN == TX to host */
-	if (irq_src & UDC_EP0_TX) {
-		int	stat;
-
-		omap_writew(UDC_EP0_TX, UDC_IRQ_SRC);
-		omap_writew(UDC_EP_SEL|UDC_EP_DIR, UDC_EP_NUM);
-		stat = omap_readw(UDC_STAT_FLG);
-		if (stat & UDC_ACK) {
-			if (udc->ep0_in) {
-				/* write next IN packet from response,
-				 * or set up the status stage.
-				 */
-				if (req)
-					stat = write_fifo(ep0, req);
-				omap_writew(UDC_EP_DIR, UDC_EP_NUM);
-				if (!req && udc->ep0_pending) {
-					omap_writew(UDC_EP_SEL, UDC_EP_NUM);
-					omap_writew(UDC_CLR_EP, UDC_CTRL);
-					omap_writew(UDC_SET_FIFO_EN, UDC_CTRL);
-					omap_writew(0, UDC_EP_NUM);
-					udc->ep0_pending = 0;
-				} /* else:  6 wait states before it'll tx */
-			} else {
-				/* ack status stage of OUT transfer */
-				omap_writew(UDC_EP_DIR, UDC_EP_NUM);
-				if (req)
-					done(ep0, req, 0);
-			}
-			req = NULL;
-		} else if (stat & UDC_STALL) {
-			omap_writew(UDC_CLR_HALT, UDC_CTRL);
-			omap_writew(UDC_EP_DIR, UDC_EP_NUM);
-		} else {
-			omap_writew(UDC_EP_DIR, UDC_EP_NUM);
-		}
-	}
-
-	/* OUT == RX from host */
-	if (irq_src & UDC_EP0_RX) {
-		int	stat;
-
-		omap_writew(UDC_EP0_RX, UDC_IRQ_SRC);
-		omap_writew(UDC_EP_SEL, UDC_EP_NUM);
-		stat = omap_readw(UDC_STAT_FLG);
-		if (stat & UDC_ACK) {
-			if (!udc->ep0_in) {
-				stat = 0;
-				/* read next OUT packet of request, maybe
-				 * reactivating the fifo; stall on errors.
-				 */
-				stat = read_fifo(ep0, req);
-				if (!req || stat < 0) {
-					omap_writew(UDC_STALL_CMD, UDC_SYSCON2);
-					udc->ep0_pending = 0;
-					stat = 0;
-				} else if (stat == 0)
-					omap_writew(UDC_SET_FIFO_EN, UDC_CTRL);
-				omap_writew(0, UDC_EP_NUM);
-
-				/* activate status stage */
-				if (stat == 1) {
-					done(ep0, req, 0);
-					/* that may have STALLed ep0... */
-					omap_writew(UDC_EP_SEL | UDC_EP_DIR,
-							UDC_EP_NUM);
-					omap_writew(UDC_CLR_EP, UDC_CTRL);
-					omap_writew(UDC_SET_FIFO_EN, UDC_CTRL);
-					omap_writew(UDC_EP_DIR, UDC_EP_NUM);
-					udc->ep0_pending = 0;
-				}
-			} else {
-				/* ack status stage of IN transfer */
-				omap_writew(0, UDC_EP_NUM);
-				if (req)
-					done(ep0, req, 0);
-			}
-		} else if (stat & UDC_STALL) {
-			omap_writew(UDC_CLR_HALT, UDC_CTRL);
-			omap_writew(0, UDC_EP_NUM);
-		} else {
-			omap_writew(0, UDC_EP_NUM);
-		}
-	}
-
-	/* SETUP starts all control transfers */
-	if (irq_src & UDC_SETUP) {
-		union u {
-			u16			word[4];
-			struct usb_ctrlrequest	r;
-		} u;
-		int			status = -EINVAL;
-		struct omap_ep		*ep;
-
-		/* read the (latest) SETUP message */
-		do {
-			omap_writew(UDC_SETUP_SEL, UDC_EP_NUM);
-			/* two bytes at a time */
-			u.word[0] = omap_readw(UDC_DATA);
-			u.word[1] = omap_readw(UDC_DATA);
-			u.word[2] = omap_readw(UDC_DATA);
-			u.word[3] = omap_readw(UDC_DATA);
-			omap_writew(0, UDC_EP_NUM);
-		} while (omap_readw(UDC_IRQ_SRC) & UDC_SETUP);
-
-#define	w_value		le16_to_cpu(u.r.wValue)
-#define	w_index		le16_to_cpu(u.r.wIndex)
-#define	w_length	le16_to_cpu(u.r.wLength)
-
-		/* Delegate almost all control requests to the gadget driver,
-		 * except for a handful of ch9 status/feature requests that
-		 * hardware doesn't autodecode _and_ the gadget API hides.
-		 */
-		udc->ep0_in = (u.r.bRequestType & USB_DIR_IN) != 0;
-		udc->ep0_set_config = 0;
-		udc->ep0_pending = 1;
-		ep0->stopped = 0;
-		ep0->ackwait = 0;
-		switch (u.r.bRequest) {
-		case USB_REQ_SET_CONFIGURATION:
-			/* udc needs to know when ep != 0 is valid */
-			if (u.r.bRequestType != USB_RECIP_DEVICE)
-				goto delegate;
-			if (w_length != 0)
-				goto do_stall;
-			udc->ep0_set_config = 1;
-			udc->ep0_reset_config = (w_value == 0);
-			VDBG("set config %d\n", w_value);
-
-			/* update udc NOW since gadget driver may start
-			 * queueing requests immediately; clear config
-			 * later if it fails the request.
-			 */
-			if (udc->ep0_reset_config)
-				omap_writew(UDC_CLR_CFG, UDC_SYSCON2);
-			else
-				omap_writew(UDC_DEV_CFG, UDC_SYSCON2);
-			update_otg(udc);
-			goto delegate;
-		case USB_REQ_CLEAR_FEATURE:
-			/* clear endpoint halt */
-			if (u.r.bRequestType != USB_RECIP_ENDPOINT)
-				goto delegate;
-			if (w_value != USB_ENDPOINT_HALT
-					|| w_length != 0)
-				goto do_stall;
-			ep = &udc->ep[w_index & 0xf];
-			if (ep != ep0) {
-				if (w_index & USB_DIR_IN)
-					ep += 16;
-				if (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC
-						|| !ep->ep.desc)
-					goto do_stall;
-				use_ep(ep, 0);
-				omap_writew(udc->clr_halt, UDC_CTRL);
-				ep->ackwait = 0;
-				if (!(ep->bEndpointAddress & USB_DIR_IN)) {
-					omap_writew(UDC_SET_FIFO_EN, UDC_CTRL);
-					ep->ackwait = 1 + ep->double_buf;
-				}
-				/* NOTE:  assumes the host behaves sanely,
-				 * only clearing real halts.  Else we may
-				 * need to kill pending transfers and then
-				 * restart the queue... very messy for DMA!
-				 */
-			}
-			VDBG("%s halt cleared by host\n", ep->name);
-			goto ep0out_status_stage;
-		case USB_REQ_SET_FEATURE:
-			/* set endpoint halt */
-			if (u.r.bRequestType != USB_RECIP_ENDPOINT)
-				goto delegate;
-			if (w_value != USB_ENDPOINT_HALT
-					|| w_length != 0)
-				goto do_stall;
-			ep = &udc->ep[w_index & 0xf];
-			if (w_index & USB_DIR_IN)
-				ep += 16;
-			if (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC
-					|| ep == ep0 || !ep->ep.desc)
-				goto do_stall;
-			if (use_dma && ep->has_dma) {
-				/* this has rude side-effects (aborts) and
-				 * can't really work if DMA-IN is active
-				 */
-				DBG("%s host set_halt, NYET\n", ep->name);
-				goto do_stall;
-			}
-			use_ep(ep, 0);
-			/* can't halt if fifo isn't empty... */
-			omap_writew(UDC_CLR_EP, UDC_CTRL);
-			omap_writew(UDC_SET_HALT, UDC_CTRL);
-			VDBG("%s halted by host\n", ep->name);
-ep0out_status_stage:
-			status = 0;
-			omap_writew(UDC_EP_SEL|UDC_EP_DIR, UDC_EP_NUM);
-			omap_writew(UDC_CLR_EP, UDC_CTRL);
-			omap_writew(UDC_SET_FIFO_EN, UDC_CTRL);
-			omap_writew(UDC_EP_DIR, UDC_EP_NUM);
-			udc->ep0_pending = 0;
-			break;
-		case USB_REQ_GET_STATUS:
-			/* USB_ENDPOINT_HALT status? */
-			if (u.r.bRequestType != (USB_DIR_IN|USB_RECIP_ENDPOINT))
-				goto intf_status;
-
-			/* ep0 never stalls */
-			if (!(w_index & 0xf))
-				goto zero_status;
-
-			/* only active endpoints count */
-			ep = &udc->ep[w_index & 0xf];
-			if (w_index & USB_DIR_IN)
-				ep += 16;
-			if (!ep->ep.desc)
-				goto do_stall;
-
-			/* iso never stalls */
-			if (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC)
-				goto zero_status;
-
-			/* FIXME don't assume non-halted endpoints!! */
-			ERR("%s status, can't report\n", ep->ep.name);
-			goto do_stall;
-
-intf_status:
-			/* return interface status.  if we were pedantic,
-			 * we'd detect non-existent interfaces, and stall.
-			 */
-			if (u.r.bRequestType
-					!= (USB_DIR_IN|USB_RECIP_INTERFACE))
-				goto delegate;
-
-zero_status:
-			/* return two zero bytes */
-			omap_writew(UDC_EP_SEL|UDC_EP_DIR, UDC_EP_NUM);
-			omap_writew(0, UDC_DATA);
-			omap_writew(UDC_SET_FIFO_EN, UDC_CTRL);
-			omap_writew(UDC_EP_DIR, UDC_EP_NUM);
-			status = 0;
-			VDBG("GET_STATUS, interface %d\n", w_index);
-			/* next, status stage */
-			break;
-		default:
-delegate:
-			/* activate the ep0out fifo right away */
-			if (!udc->ep0_in && w_length) {
-				omap_writew(0, UDC_EP_NUM);
-				omap_writew(UDC_SET_FIFO_EN, UDC_CTRL);
-			}
-
-			/* gadget drivers see class/vendor specific requests,
-			 * {SET,GET}_{INTERFACE,DESCRIPTOR,CONFIGURATION},
-			 * and more
-			 */
-			VDBG("SETUP %02x.%02x v%04x i%04x l%04x\n",
-				u.r.bRequestType, u.r.bRequest,
-				w_value, w_index, w_length);
-
-#undef	w_value
-#undef	w_index
-#undef	w_length
-
-			/* The gadget driver may return an error here,
-			 * causing an immediate protocol stall.
-			 *
-			 * Else it must issue a response, either queueing a
-			 * response buffer for the DATA stage, or halting ep0
-			 * (causing a protocol stall, not a real halt).  A
-			 * zero length buffer means no DATA stage.
-			 *
-			 * It's fine to issue that response after the setup()
-			 * call returns, and this IRQ was handled.
-			 */
-			udc->ep0_setup = 1;
-			spin_unlock(&udc->lock);
-			status = udc->driver->setup(&udc->gadget, &u.r);
-			spin_lock(&udc->lock);
-			udc->ep0_setup = 0;
-		}
-
-		if (status < 0) {
-do_stall:
-			VDBG("req %02x.%02x protocol STALL; stat %d\n",
-					u.r.bRequestType, u.r.bRequest, status);
-			if (udc->ep0_set_config) {
-				if (udc->ep0_reset_config)
-					WARNING("error resetting config?\n");
-				else
-					omap_writew(UDC_CLR_CFG, UDC_SYSCON2);
-			}
-			omap_writew(UDC_STALL_CMD, UDC_SYSCON2);
-			udc->ep0_pending = 0;
-		}
-	}
-}
-
-/*-------------------------------------------------------------------------*/
-
-#define OTG_FLAGS (UDC_B_HNP_ENABLE|UDC_A_HNP_SUPPORT|UDC_A_ALT_HNP_SUPPORT)
-
-static void devstate_irq(struct omap_udc *udc, u16 irq_src)
-{
-	u16	devstat, change;
-
-	devstat = omap_readw(UDC_DEVSTAT);
-	change = devstat ^ udc->devstat;
-	udc->devstat = devstat;
-
-	if (change & (UDC_USB_RESET|UDC_ATT)) {
-		udc_quiesce(udc);
-
-		if (change & UDC_ATT) {
-			/* driver for any external transceiver will
-			 * have called omap_vbus_session() already
-			 */
-			if (devstat & UDC_ATT) {
-				udc->gadget.speed = USB_SPEED_FULL;
-				VDBG("connect\n");
-				if (IS_ERR_OR_NULL(udc->transceiver))
-					pullup_enable(udc);
-				/* if (driver->connect) call it */
-			} else if (udc->gadget.speed != USB_SPEED_UNKNOWN) {
-				udc->gadget.speed = USB_SPEED_UNKNOWN;
-				if (IS_ERR_OR_NULL(udc->transceiver))
-					pullup_disable(udc);
-				DBG("disconnect, gadget %s\n",
-					udc->driver->driver.name);
-				if (udc->driver->disconnect) {
-					spin_unlock(&udc->lock);
-					udc->driver->disconnect(&udc->gadget);
-					spin_lock(&udc->lock);
-				}
-			}
-			change &= ~UDC_ATT;
-		}
-
-		if (change & UDC_USB_RESET) {
-			if (devstat & UDC_USB_RESET) {
-				VDBG("RESET=1\n");
-			} else {
-				udc->gadget.speed = USB_SPEED_FULL;
-				INFO("USB reset done, gadget %s\n",
-					udc->driver->driver.name);
-				/* ep0 traffic is legal from now on */
-				omap_writew(UDC_DS_CHG_IE | UDC_EP0_IE,
-						UDC_IRQ_EN);
-			}
-			change &= ~UDC_USB_RESET;
-		}
-	}
-	if (change & UDC_SUS) {
-		if (udc->gadget.speed != USB_SPEED_UNKNOWN) {
-			/* FIXME tell isp1301 to suspend/resume (?) */
-			if (devstat & UDC_SUS) {
-				VDBG("suspend\n");
-				update_otg(udc);
-				/* HNP could be under way already */
-				if (udc->gadget.speed == USB_SPEED_FULL
-						&& udc->driver->suspend) {
-					spin_unlock(&udc->lock);
-					udc->driver->suspend(&udc->gadget);
-					spin_lock(&udc->lock);
-				}
-				if (!IS_ERR_OR_NULL(udc->transceiver))
-					usb_phy_set_suspend(
-							udc->transceiver, 1);
-			} else {
-				VDBG("resume\n");
-				if (!IS_ERR_OR_NULL(udc->transceiver))
-					usb_phy_set_suspend(
-							udc->transceiver, 0);
-				if (udc->gadget.speed == USB_SPEED_FULL
-						&& udc->driver->resume) {
-					spin_unlock(&udc->lock);
-					udc->driver->resume(&udc->gadget);
-					spin_lock(&udc->lock);
-				}
-			}
-		}
-		change &= ~UDC_SUS;
-	}
-	if (!cpu_is_omap15xx() && (change & OTG_FLAGS)) {
-		update_otg(udc);
-		change &= ~OTG_FLAGS;
-	}
-
-	change &= ~(UDC_CFG|UDC_DEF|UDC_ADD);
-	if (change)
-		VDBG("devstat %03x, ignore change %03x\n",
-			devstat,  change);
-
-	omap_writew(UDC_DS_CHG, UDC_IRQ_SRC);
-}
-
-static irqreturn_t omap_udc_irq(int irq, void *_udc)
-{
-	struct omap_udc	*udc = _udc;
-	u16		irq_src;
-	irqreturn_t	status = IRQ_NONE;
-	unsigned long	flags;
-
-	spin_lock_irqsave(&udc->lock, flags);
-	irq_src = omap_readw(UDC_IRQ_SRC);
-
-	/* Device state change (usb ch9 stuff) */
-	if (irq_src & UDC_DS_CHG) {
-		devstate_irq(_udc, irq_src);
-		status = IRQ_HANDLED;
-		irq_src &= ~UDC_DS_CHG;
-	}
-
-	/* EP0 control transfers */
-	if (irq_src & (UDC_EP0_RX|UDC_SETUP|UDC_EP0_TX)) {
-		ep0_irq(_udc, irq_src);
-		status = IRQ_HANDLED;
-		irq_src &= ~(UDC_EP0_RX|UDC_SETUP|UDC_EP0_TX);
-	}
-
-	/* DMA transfer completion */
-	if (use_dma && (irq_src & (UDC_TXN_DONE|UDC_RXN_CNT|UDC_RXN_EOT))) {
-		dma_irq(_udc, irq_src);
-		status = IRQ_HANDLED;
-		irq_src &= ~(UDC_TXN_DONE|UDC_RXN_CNT|UDC_RXN_EOT);
-	}
-
-	irq_src &= ~(UDC_IRQ_SOF | UDC_EPN_TX|UDC_EPN_RX);
-	if (irq_src)
-		DBG("udc_irq, unhandled %03x\n", irq_src);
-	spin_unlock_irqrestore(&udc->lock, flags);
-
-	return status;
-}
-
-/* workaround for seemingly-lost IRQs for RX ACKs... */
-#define PIO_OUT_TIMEOUT	(jiffies + HZ/3)
-#define HALF_FULL(f)	(!((f)&(UDC_NON_ISO_FIFO_FULL|UDC_NON_ISO_FIFO_EMPTY)))
-
-static void pio_out_timer(struct timer_list *t)
-{
-	struct omap_ep	*ep = from_timer(ep, t, timer);
-	unsigned long	flags;
-	u16		stat_flg;
-
-	spin_lock_irqsave(&ep->udc->lock, flags);
-	if (!list_empty(&ep->queue) && ep->ackwait) {
-		use_ep(ep, UDC_EP_SEL);
-		stat_flg = omap_readw(UDC_STAT_FLG);
-
-		if ((stat_flg & UDC_ACK) && (!(stat_flg & UDC_FIFO_EN)
-				|| (ep->double_buf && HALF_FULL(stat_flg)))) {
-			struct omap_req	*req;
-
-			VDBG("%s: lose, %04x\n", ep->ep.name, stat_flg);
-			req = container_of(ep->queue.next,
-					struct omap_req, queue);
-			(void) read_fifo(ep, req);
-			omap_writew(ep->bEndpointAddress, UDC_EP_NUM);
-			omap_writew(UDC_SET_FIFO_EN, UDC_CTRL);
-			ep->ackwait = 1 + ep->double_buf;
-		} else
-			deselect_ep();
-	}
-	mod_timer(&ep->timer, PIO_OUT_TIMEOUT);
-	spin_unlock_irqrestore(&ep->udc->lock, flags);
-}
-
-static irqreturn_t omap_udc_pio_irq(int irq, void *_dev)
-{
-	u16		epn_stat, irq_src;
-	irqreturn_t	status = IRQ_NONE;
-	struct omap_ep	*ep;
-	int		epnum;
-	struct omap_udc	*udc = _dev;
-	struct omap_req	*req;
-	unsigned long	flags;
-
-	spin_lock_irqsave(&udc->lock, flags);
-	epn_stat = omap_readw(UDC_EPN_STAT);
-	irq_src = omap_readw(UDC_IRQ_SRC);
-
-	/* handle OUT first, to avoid some wasteful NAKs */
-	if (irq_src & UDC_EPN_RX) {
-		epnum = (epn_stat >> 8) & 0x0f;
-		omap_writew(UDC_EPN_RX, UDC_IRQ_SRC);
-		status = IRQ_HANDLED;
-		ep = &udc->ep[epnum];
-		ep->irqs++;
-
-		omap_writew(epnum | UDC_EP_SEL, UDC_EP_NUM);
-		ep->fnf = 0;
-		if (omap_readw(UDC_STAT_FLG) & UDC_ACK) {
-			ep->ackwait--;
-			if (!list_empty(&ep->queue)) {
-				int stat;
-				req = container_of(ep->queue.next,
-						struct omap_req, queue);
-				stat = read_fifo(ep, req);
-				if (!ep->double_buf)
-					ep->fnf = 1;
-			}
-		}
-		/* min 6 clock delay before clearing EP_SEL ... */
-		epn_stat = omap_readw(UDC_EPN_STAT);
-		epn_stat = omap_readw(UDC_EPN_STAT);
-		omap_writew(epnum, UDC_EP_NUM);
-
-		/* enabling fifo _after_ clearing ACK, contrary to docs,
-		 * reduces lossage; timer still needed though (sigh).
-		 */
-		if (ep->fnf) {
-			omap_writew(UDC_SET_FIFO_EN, UDC_CTRL);
-			ep->ackwait = 1 + ep->double_buf;
-		}
-		mod_timer(&ep->timer, PIO_OUT_TIMEOUT);
-	}
-
-	/* then IN transfers */
-	else if (irq_src & UDC_EPN_TX) {
-		epnum = epn_stat & 0x0f;
-		omap_writew(UDC_EPN_TX, UDC_IRQ_SRC);
-		status = IRQ_HANDLED;
-		ep = &udc->ep[16 + epnum];
-		ep->irqs++;
-
-		omap_writew(epnum | UDC_EP_DIR | UDC_EP_SEL, UDC_EP_NUM);
-		if (omap_readw(UDC_STAT_FLG) & UDC_ACK) {
-			ep->ackwait = 0;
-			if (!list_empty(&ep->queue)) {
-				req = container_of(ep->queue.next,
-						struct omap_req, queue);
-				(void) write_fifo(ep, req);
-			}
-		}
-		/* min 6 clock delay before clearing EP_SEL ... */
-		epn_stat = omap_readw(UDC_EPN_STAT);
-		epn_stat = omap_readw(UDC_EPN_STAT);
-		omap_writew(epnum | UDC_EP_DIR, UDC_EP_NUM);
-		/* then 6 clocks before it'd tx */
-	}
-
-	spin_unlock_irqrestore(&udc->lock, flags);
-	return status;
-}
-
-#ifdef	USE_ISO
-static irqreturn_t omap_udc_iso_irq(int irq, void *_dev)
-{
-	struct omap_udc	*udc = _dev;
-	struct omap_ep	*ep;
-	int		pending = 0;
-	unsigned long	flags;
-
-	spin_lock_irqsave(&udc->lock, flags);
-
-	/* handle all non-DMA ISO transfers */
-	list_for_each_entry(ep, &udc->iso, iso) {
-		u16		stat;
-		struct omap_req	*req;
-
-		if (ep->has_dma || list_empty(&ep->queue))
-			continue;
-		req = list_entry(ep->queue.next, struct omap_req, queue);
-
-		use_ep(ep, UDC_EP_SEL);
-		stat = omap_readw(UDC_STAT_FLG);
-
-		/* NOTE: like the other controller drivers, this isn't
-		 * currently reporting lost or damaged frames.
-		 */
-		if (ep->bEndpointAddress & USB_DIR_IN) {
-			if (stat & UDC_MISS_IN)
-				/* done(ep, req, -EPROTO) */;
-			else
-				write_fifo(ep, req);
-		} else {
-			int	status = 0;
-
-			if (stat & UDC_NO_RXPACKET)
-				status = -EREMOTEIO;
-			else if (stat & UDC_ISO_ERR)
-				status = -EILSEQ;
-			else if (stat & UDC_DATA_FLUSH)
-				status = -ENOSR;
-
-			if (status)
-				/* done(ep, req, status) */;
-			else
-				read_fifo(ep, req);
-		}
-		deselect_ep();
-		/* 6 wait states before next EP */
-
-		ep->irqs++;
-		if (!list_empty(&ep->queue))
-			pending = 1;
-	}
-	if (!pending) {
-		u16 w;
-
-		w = omap_readw(UDC_IRQ_EN);
-		w &= ~UDC_SOF_IE;
-		omap_writew(w, UDC_IRQ_EN);
-	}
-	omap_writew(UDC_IRQ_SOF, UDC_IRQ_SRC);
-
-	spin_unlock_irqrestore(&udc->lock, flags);
-	return IRQ_HANDLED;
-}
-#endif
-
-/*-------------------------------------------------------------------------*/
-
-static inline int machine_without_vbus_sense(void)
-{
-	return  machine_is_omap_osk() || machine_is_sx1();
-}
-
-static int omap_udc_start(struct usb_gadget *g,
-		struct usb_gadget_driver *driver)
-{
-	int		status;
-	struct omap_ep	*ep;
-	unsigned long	flags;
-
-
-	spin_lock_irqsave(&udc->lock, flags);
-	/* reset state */
-	list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) {
-		ep->irqs = 0;
-		if (ep->bmAttributes == USB_ENDPOINT_XFER_ISOC)
-			continue;
-		use_ep(ep, 0);
-		omap_writew(UDC_SET_HALT, UDC_CTRL);
-	}
-	udc->ep0_pending = 0;
-	udc->ep[0].irqs = 0;
-	udc->softconnect = 1;
-
-	/* hook up the driver */
-	driver->driver.bus = NULL;
-	udc->driver = driver;
-	spin_unlock_irqrestore(&udc->lock, flags);
-
-	if (udc->dc_clk != NULL)
-		omap_udc_enable_clock(1);
-
-	omap_writew(UDC_IRQ_SRC_MASK, UDC_IRQ_SRC);
-
-	/* connect to bus through transceiver */
-	if (!IS_ERR_OR_NULL(udc->transceiver)) {
-		status = otg_set_peripheral(udc->transceiver->otg,
-						&udc->gadget);
-		if (status < 0) {
-			ERR("can't bind to transceiver\n");
-			udc->driver = NULL;
-			goto done;
-		}
-	} else {
-		status = 0;
-		if (can_pullup(udc))
-			pullup_enable(udc);
-		else
-			pullup_disable(udc);
-	}
-
-	/* boards that don't have VBUS sensing can't autogate 48MHz;
-	 * can't enter deep sleep while a gadget driver is active.
-	 */
-	if (machine_without_vbus_sense())
-		omap_vbus_session(&udc->gadget, 1);
-
-done:
-	if (udc->dc_clk != NULL)
-		omap_udc_enable_clock(0);
-
-	return status;
-}
-
-static int omap_udc_stop(struct usb_gadget *g)
-{
-	unsigned long	flags;
-
-	if (udc->dc_clk != NULL)
-		omap_udc_enable_clock(1);
-
-	if (machine_without_vbus_sense())
-		omap_vbus_session(&udc->gadget, 0);
-
-	if (!IS_ERR_OR_NULL(udc->transceiver))
-		(void) otg_set_peripheral(udc->transceiver->otg, NULL);
-	else
-		pullup_disable(udc);
-
-	spin_lock_irqsave(&udc->lock, flags);
-	udc_quiesce(udc);
-	spin_unlock_irqrestore(&udc->lock, flags);
-
-	udc->driver = NULL;
-
-	if (udc->dc_clk != NULL)
-		omap_udc_enable_clock(0);
-
-	return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-#ifdef CONFIG_USB_GADGET_DEBUG_FILES
-
-#include <linux/seq_file.h>
-
-static const char proc_filename[] = "driver/udc";
-
-#define FOURBITS "%s%s%s%s"
-#define EIGHTBITS "%s%s%s%s%s%s%s%s"
-
-static void proc_ep_show(struct seq_file *s, struct omap_ep *ep)
-{
-	u16		stat_flg;
-	struct omap_req	*req;
-	char		buf[20];
-
-	use_ep(ep, 0);
-
-	if (use_dma && ep->has_dma)
-		snprintf(buf, sizeof buf, "(%cxdma%d lch%d) ",
-			(ep->bEndpointAddress & USB_DIR_IN) ? 't' : 'r',
-			ep->dma_channel - 1, ep->lch);
-	else
-		buf[0] = 0;
-
-	stat_flg = omap_readw(UDC_STAT_FLG);
-	seq_printf(s,
-		"\n%s %s%s%sirqs %ld stat %04x " EIGHTBITS FOURBITS "%s\n",
-		ep->name, buf,
-		ep->double_buf ? "dbuf " : "",
-		({ char *s;
-		switch (ep->ackwait) {
-		case 0:
-			s = "";
-			break;
-		case 1:
-			s = "(ackw) ";
-			break;
-		case 2:
-			s = "(ackw2) ";
-			break;
-		default:
-			s = "(?) ";
-			break;
-		} s; }),
-		ep->irqs, stat_flg,
-		(stat_flg & UDC_NO_RXPACKET) ? "no_rxpacket " : "",
-		(stat_flg & UDC_MISS_IN) ? "miss_in " : "",
-		(stat_flg & UDC_DATA_FLUSH) ? "data_flush " : "",
-		(stat_flg & UDC_ISO_ERR) ? "iso_err " : "",
-		(stat_flg & UDC_ISO_FIFO_EMPTY) ? "iso_fifo_empty " : "",
-		(stat_flg & UDC_ISO_FIFO_FULL) ? "iso_fifo_full " : "",
-		(stat_flg & UDC_EP_HALTED) ? "HALT " : "",
-		(stat_flg & UDC_STALL) ? "STALL " : "",
-		(stat_flg & UDC_NAK) ? "NAK " : "",
-		(stat_flg & UDC_ACK) ? "ACK " : "",
-		(stat_flg & UDC_FIFO_EN) ? "fifo_en " : "",
-		(stat_flg & UDC_NON_ISO_FIFO_EMPTY) ? "fifo_empty " : "",
-		(stat_flg & UDC_NON_ISO_FIFO_FULL) ? "fifo_full " : "");
-
-	if (list_empty(&ep->queue))
-		seq_printf(s, "\t(queue empty)\n");
-	else
-		list_for_each_entry(req, &ep->queue, queue) {
-			unsigned	length = req->req.actual;
-
-			if (use_dma && buf[0]) {
-				length += ((ep->bEndpointAddress & USB_DIR_IN)
-						? dma_src_len : dma_dest_len)
-					(ep, req->req.dma + length);
-				buf[0] = 0;
-			}
-			seq_printf(s, "\treq %p len %d/%d buf %p\n",
-					&req->req, length,
-					req->req.length, req->req.buf);
-		}
-}
-
-static char *trx_mode(unsigned m, int enabled)
-{
-	switch (m) {
-	case 0:
-		return enabled ? "*6wire" : "unused";
-	case 1:
-		return "4wire";
-	case 2:
-		return "3wire";
-	case 3:
-		return "6wire";
-	default:
-		return "unknown";
-	}
-}
-
-static int proc_otg_show(struct seq_file *s)
-{
-	u32		tmp;
-	u32		trans = 0;
-	char		*ctrl_name = "(UNKNOWN)";
-
-	tmp = omap_readl(OTG_REV);
-	ctrl_name = "transceiver_ctrl";
-	trans = omap_readw(USB_TRANSCEIVER_CTRL);
-	seq_printf(s, "\nOTG rev %d.%d, %s %05x\n",
-		tmp >> 4, tmp & 0xf, ctrl_name, trans);
-	tmp = omap_readw(OTG_SYSCON_1);
-	seq_printf(s, "otg_syscon1 %08x usb2 %s, usb1 %s, usb0 %s,"
-			FOURBITS "\n", tmp,
-		trx_mode(USB2_TRX_MODE(tmp), trans & CONF_USB2_UNI_R),
-		trx_mode(USB1_TRX_MODE(tmp), trans & CONF_USB1_UNI_R),
-		(USB0_TRX_MODE(tmp) == 0 && !cpu_is_omap1710())
-			? "internal"
-			: trx_mode(USB0_TRX_MODE(tmp), 1),
-		(tmp & OTG_IDLE_EN) ? " !otg" : "",
-		(tmp & HST_IDLE_EN) ? " !host" : "",
-		(tmp & DEV_IDLE_EN) ? " !dev" : "",
-		(tmp & OTG_RESET_DONE) ? " reset_done" : " reset_active");
-	tmp = omap_readl(OTG_SYSCON_2);
-	seq_printf(s, "otg_syscon2 %08x%s" EIGHTBITS
-			" b_ase_brst=%d hmc=%d\n", tmp,
-		(tmp & OTG_EN) ? " otg_en" : "",
-		(tmp & USBX_SYNCHRO) ? " synchro" : "",
-		/* much more SRP stuff */
-		(tmp & SRP_DATA) ? " srp_data" : "",
-		(tmp & SRP_VBUS) ? " srp_vbus" : "",
-		(tmp & OTG_PADEN) ? " otg_paden" : "",
-		(tmp & HMC_PADEN) ? " hmc_paden" : "",
-		(tmp & UHOST_EN) ? " uhost_en" : "",
-		(tmp & HMC_TLLSPEED) ? " tllspeed" : "",
-		(tmp & HMC_TLLATTACH) ? " tllattach" : "",
-		B_ASE_BRST(tmp),
-		OTG_HMC(tmp));
-	tmp = omap_readl(OTG_CTRL);
-	seq_printf(s, "otg_ctrl    %06x" EIGHTBITS EIGHTBITS "%s\n", tmp,
-		(tmp & OTG_ASESSVLD) ? " asess" : "",
-		(tmp & OTG_BSESSEND) ? " bsess_end" : "",
-		(tmp & OTG_BSESSVLD) ? " bsess" : "",
-		(tmp & OTG_VBUSVLD) ? " vbus" : "",
-		(tmp & OTG_ID) ? " id" : "",
-		(tmp & OTG_DRIVER_SEL) ? " DEVICE" : " HOST",
-		(tmp & OTG_A_SETB_HNPEN) ? " a_setb_hnpen" : "",
-		(tmp & OTG_A_BUSREQ) ? " a_bus" : "",
-		(tmp & OTG_B_HNPEN) ? " b_hnpen" : "",
-		(tmp & OTG_B_BUSREQ) ? " b_bus" : "",
-		(tmp & OTG_BUSDROP) ? " busdrop" : "",
-		(tmp & OTG_PULLDOWN) ? " down" : "",
-		(tmp & OTG_PULLUP) ? " up" : "",
-		(tmp & OTG_DRV_VBUS) ? " drv" : "",
-		(tmp & OTG_PD_VBUS) ? " pd_vb" : "",
-		(tmp & OTG_PU_VBUS) ? " pu_vb" : "",
-		(tmp & OTG_PU_ID) ? " pu_id" : ""
-		);
-	tmp = omap_readw(OTG_IRQ_EN);
-	seq_printf(s, "otg_irq_en  %04x" "\n", tmp);
-	tmp = omap_readw(OTG_IRQ_SRC);
-	seq_printf(s, "otg_irq_src %04x" "\n", tmp);
-	tmp = omap_readw(OTG_OUTCTRL);
-	seq_printf(s, "otg_outctrl %04x" "\n", tmp);
-	tmp = omap_readw(OTG_TEST);
-	seq_printf(s, "otg_test    %04x" "\n", tmp);
-	return 0;
-}
-
-static int proc_udc_show(struct seq_file *s, void *_)
-{
-	u32		tmp;
-	struct omap_ep	*ep;
-	unsigned long	flags;
-
-	spin_lock_irqsave(&udc->lock, flags);
-
-	seq_printf(s, "%s, version: " DRIVER_VERSION
-#ifdef	USE_ISO
-		" (iso)"
-#endif
-		"%s\n",
-		driver_desc,
-		use_dma ?  " (dma)" : "");
-
-	tmp = omap_readw(UDC_REV) & 0xff;
-	seq_printf(s,
-		"UDC rev %d.%d, fifo mode %d, gadget %s\n"
-		"hmc %d, transceiver %s\n",
-		tmp >> 4, tmp & 0xf,
-		fifo_mode,
-		udc->driver ? udc->driver->driver.name : "(none)",
-		HMC,
-		udc->transceiver
-			? udc->transceiver->label
-			: (cpu_is_omap1710()
-				? "external" : "(none)"));
-	seq_printf(s, "ULPD control %04x req %04x status %04x\n",
-		omap_readw(ULPD_CLOCK_CTRL),
-		omap_readw(ULPD_SOFT_REQ),
-		omap_readw(ULPD_STATUS_REQ));
-
-	/* OTG controller registers */
-	if (!cpu_is_omap15xx())
-		proc_otg_show(s);
-
-	tmp = omap_readw(UDC_SYSCON1);
-	seq_printf(s, "\nsyscon1     %04x" EIGHTBITS "\n", tmp,
-		(tmp & UDC_CFG_LOCK) ? " cfg_lock" : "",
-		(tmp & UDC_DATA_ENDIAN) ? " data_endian" : "",
-		(tmp & UDC_DMA_ENDIAN) ? " dma_endian" : "",
-		(tmp & UDC_NAK_EN) ? " nak" : "",
-		(tmp & UDC_AUTODECODE_DIS) ? " autodecode_dis" : "",
-		(tmp & UDC_SELF_PWR) ? " self_pwr" : "",
-		(tmp & UDC_SOFF_DIS) ? " soff_dis" : "",
-		(tmp & UDC_PULLUP_EN) ? " PULLUP" : "");
-	/* syscon2 is write-only */
-
-	/* UDC controller registers */
-	if (!(tmp & UDC_PULLUP_EN)) {
-		seq_printf(s, "(suspended)\n");
-		spin_unlock_irqrestore(&udc->lock, flags);
-		return 0;
-	}
-
-	tmp = omap_readw(UDC_DEVSTAT);
-	seq_printf(s, "devstat     %04x" EIGHTBITS "%s%s\n", tmp,
-		(tmp & UDC_B_HNP_ENABLE) ? " b_hnp" : "",
-		(tmp & UDC_A_HNP_SUPPORT) ? " a_hnp" : "",
-		(tmp & UDC_A_ALT_HNP_SUPPORT) ? " a_alt_hnp" : "",
-		(tmp & UDC_R_WK_OK) ? " r_wk_ok" : "",
-		(tmp & UDC_USB_RESET) ? " usb_reset" : "",
-		(tmp & UDC_SUS) ? " SUS" : "",
-		(tmp & UDC_CFG) ? " CFG" : "",
-		(tmp & UDC_ADD) ? " ADD" : "",
-		(tmp & UDC_DEF) ? " DEF" : "",
-		(tmp & UDC_ATT) ? " ATT" : "");
-	seq_printf(s, "sof         %04x\n", omap_readw(UDC_SOF));
-	tmp = omap_readw(UDC_IRQ_EN);
-	seq_printf(s, "irq_en      %04x" FOURBITS "%s\n", tmp,
-		(tmp & UDC_SOF_IE) ? " sof" : "",
-		(tmp & UDC_EPN_RX_IE) ? " epn_rx" : "",
-		(tmp & UDC_EPN_TX_IE) ? " epn_tx" : "",
-		(tmp & UDC_DS_CHG_IE) ? " ds_chg" : "",
-		(tmp & UDC_EP0_IE) ? " ep0" : "");
-	tmp = omap_readw(UDC_IRQ_SRC);
-	seq_printf(s, "irq_src     %04x" EIGHTBITS "%s%s\n", tmp,
-		(tmp & UDC_TXN_DONE) ? " txn_done" : "",
-		(tmp & UDC_RXN_CNT) ? " rxn_cnt" : "",
-		(tmp & UDC_RXN_EOT) ? " rxn_eot" : "",
-		(tmp & UDC_IRQ_SOF) ? " sof" : "",
-		(tmp & UDC_EPN_RX) ? " epn_rx" : "",
-		(tmp & UDC_EPN_TX) ? " epn_tx" : "",
-		(tmp & UDC_DS_CHG) ? " ds_chg" : "",
-		(tmp & UDC_SETUP) ? " setup" : "",
-		(tmp & UDC_EP0_RX) ? " ep0out" : "",
-		(tmp & UDC_EP0_TX) ? " ep0in" : "");
-	if (use_dma) {
-		unsigned i;
-
-		tmp = omap_readw(UDC_DMA_IRQ_EN);
-		seq_printf(s, "dma_irq_en  %04x%s" EIGHTBITS "\n", tmp,
-			(tmp & UDC_TX_DONE_IE(3)) ? " tx2_done" : "",
-			(tmp & UDC_RX_CNT_IE(3)) ? " rx2_cnt" : "",
-			(tmp & UDC_RX_EOT_IE(3)) ? " rx2_eot" : "",
-
-			(tmp & UDC_TX_DONE_IE(2)) ? " tx1_done" : "",
-			(tmp & UDC_RX_CNT_IE(2)) ? " rx1_cnt" : "",
-			(tmp & UDC_RX_EOT_IE(2)) ? " rx1_eot" : "",
-
-			(tmp & UDC_TX_DONE_IE(1)) ? " tx0_done" : "",
-			(tmp & UDC_RX_CNT_IE(1)) ? " rx0_cnt" : "",
-			(tmp & UDC_RX_EOT_IE(1)) ? " rx0_eot" : "");
-
-		tmp = omap_readw(UDC_RXDMA_CFG);
-		seq_printf(s, "rxdma_cfg   %04x\n", tmp);
-		if (tmp) {
-			for (i = 0; i < 3; i++) {
-				if ((tmp & (0x0f << (i * 4))) == 0)
-					continue;
-				seq_printf(s, "rxdma[%d]    %04x\n", i,
-						omap_readw(UDC_RXDMA(i + 1)));
-			}
-		}
-		tmp = omap_readw(UDC_TXDMA_CFG);
-		seq_printf(s, "txdma_cfg   %04x\n", tmp);
-		if (tmp) {
-			for (i = 0; i < 3; i++) {
-				if (!(tmp & (0x0f << (i * 4))))
-					continue;
-				seq_printf(s, "txdma[%d]    %04x\n", i,
-						omap_readw(UDC_TXDMA(i + 1)));
-			}
-		}
-	}
-
-	tmp = omap_readw(UDC_DEVSTAT);
-	if (tmp & UDC_ATT) {
-		proc_ep_show(s, &udc->ep[0]);
-		if (tmp & UDC_ADD) {
-			list_for_each_entry(ep, &udc->gadget.ep_list,
-					ep.ep_list) {
-				if (ep->ep.desc)
-					proc_ep_show(s, ep);
-			}
-		}
-	}
-	spin_unlock_irqrestore(&udc->lock, flags);
-	return 0;
-}
-
-static void create_proc_file(void)
-{
-	proc_create_single(proc_filename, 0, NULL, proc_udc_show);
-}
-
-static void remove_proc_file(void)
-{
-	remove_proc_entry(proc_filename, NULL);
-}
-
-#else
-
-static inline void create_proc_file(void) {}
-static inline void remove_proc_file(void) {}
-
-#endif
-
-/*-------------------------------------------------------------------------*/
-
-/* Before this controller can enumerate, we need to pick an endpoint
- * configuration, or "fifo_mode"  That involves allocating 2KB of packet
- * buffer space among the endpoints we'll be operating.
- *
- * NOTE: as of OMAP 1710 ES2.0, writing a new endpoint config when
- * UDC_SYSCON_1.CFG_LOCK is set can now work.  We won't use that
- * capability yet though.
- */
-static unsigned
-omap_ep_setup(char *name, u8 addr, u8 type,
-		unsigned buf, unsigned maxp, int dbuf)
-{
-	struct omap_ep	*ep;
-	u16		epn_rxtx = 0;
-
-	/* OUT endpoints first, then IN */
-	ep = &udc->ep[addr & 0xf];
-	if (addr & USB_DIR_IN)
-		ep += 16;
-
-	/* in case of ep init table bugs */
-	BUG_ON(ep->name[0]);
-
-	/* chip setup ... bit values are same for IN, OUT */
-	if (type == USB_ENDPOINT_XFER_ISOC) {
-		switch (maxp) {
-		case 8:
-			epn_rxtx = 0 << 12;
-			break;
-		case 16:
-			epn_rxtx = 1 << 12;
-			break;
-		case 32:
-			epn_rxtx = 2 << 12;
-			break;
-		case 64:
-			epn_rxtx = 3 << 12;
-			break;
-		case 128:
-			epn_rxtx = 4 << 12;
-			break;
-		case 256:
-			epn_rxtx = 5 << 12;
-			break;
-		case 512:
-			epn_rxtx = 6 << 12;
-			break;
-		default:
-			BUG();
-		}
-		epn_rxtx |= UDC_EPN_RX_ISO;
-		dbuf = 1;
-	} else {
-		/* double-buffering "not supported" on 15xx,
-		 * and ignored for PIO-IN on newer chips
-		 * (for more reliable behavior)
-		 */
-		if (!use_dma || cpu_is_omap15xx())
-			dbuf = 0;
-
-		switch (maxp) {
-		case 8:
-			epn_rxtx = 0 << 12;
-			break;
-		case 16:
-			epn_rxtx = 1 << 12;
-			break;
-		case 32:
-			epn_rxtx = 2 << 12;
-			break;
-		case 64:
-			epn_rxtx = 3 << 12;
-			break;
-		default:
-			BUG();
-		}
-		if (dbuf && addr)
-			epn_rxtx |= UDC_EPN_RX_DB;
-		timer_setup(&ep->timer, pio_out_timer, 0);
-	}
-	if (addr)
-		epn_rxtx |= UDC_EPN_RX_VALID;
-	BUG_ON(buf & 0x07);
-	epn_rxtx |= buf >> 3;
-
-	DBG("%s addr %02x rxtx %04x maxp %d%s buf %d\n",
-		name, addr, epn_rxtx, maxp, dbuf ? "x2" : "", buf);
-
-	if (addr & USB_DIR_IN)
-		omap_writew(epn_rxtx, UDC_EP_TX(addr & 0xf));
-	else
-		omap_writew(epn_rxtx, UDC_EP_RX(addr));
-
-	/* next endpoint's buffer starts after this one's */
-	buf += maxp;
-	if (dbuf)
-		buf += maxp;
-	BUG_ON(buf > 2048);
-
-	/* set up driver data structures */
-	BUG_ON(strlen(name) >= sizeof ep->name);
-	strscpy(ep->name, name, sizeof(ep->name));
-	INIT_LIST_HEAD(&ep->queue);
-	INIT_LIST_HEAD(&ep->iso);
-	ep->bEndpointAddress = addr;
-	ep->bmAttributes = type;
-	ep->double_buf = dbuf;
-	ep->udc = udc;
-
-	switch (type) {
-	case USB_ENDPOINT_XFER_CONTROL:
-		ep->ep.caps.type_control = true;
-		ep->ep.caps.dir_in = true;
-		ep->ep.caps.dir_out = true;
-		break;
-	case USB_ENDPOINT_XFER_ISOC:
-		ep->ep.caps.type_iso = true;
-		break;
-	case USB_ENDPOINT_XFER_BULK:
-		ep->ep.caps.type_bulk = true;
-		break;
-	case USB_ENDPOINT_XFER_INT:
-		ep->ep.caps.type_int = true;
-		break;
-	}
-
-	if (addr & USB_DIR_IN)
-		ep->ep.caps.dir_in = true;
-	else
-		ep->ep.caps.dir_out = true;
-
-	ep->ep.name = ep->name;
-	ep->ep.ops = &omap_ep_ops;
-	ep->maxpacket = maxp;
-	usb_ep_set_maxpacket_limit(&ep->ep, ep->maxpacket);
-	list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list);
-
-	return buf;
-}
-
-static void omap_udc_release(struct device *dev)
-{
-	pullup_disable(udc);
-	if (!IS_ERR_OR_NULL(udc->transceiver)) {
-		usb_put_phy(udc->transceiver);
-		udc->transceiver = NULL;
-	}
-	omap_writew(0, UDC_SYSCON1);
-	remove_proc_file();
-	if (udc->dc_clk) {
-		if (udc->clk_requested)
-			omap_udc_enable_clock(0);
-		clk_unprepare(udc->hhc_clk);
-		clk_unprepare(udc->dc_clk);
-		clk_put(udc->hhc_clk);
-		clk_put(udc->dc_clk);
-	}
-	if (udc->done)
-		complete(udc->done);
-	kfree(udc);
-}
-
-static int
-omap_udc_setup(struct platform_device *odev, struct usb_phy *xceiv)
-{
-	unsigned	tmp, buf;
-
-	/* abolish any previous hardware state */
-	omap_writew(0, UDC_SYSCON1);
-	omap_writew(0, UDC_IRQ_EN);
-	omap_writew(UDC_IRQ_SRC_MASK, UDC_IRQ_SRC);
-	omap_writew(0, UDC_DMA_IRQ_EN);
-	omap_writew(0, UDC_RXDMA_CFG);
-	omap_writew(0, UDC_TXDMA_CFG);
-
-	/* UDC_PULLUP_EN gates the chip clock */
-	/* OTG_SYSCON_1 |= DEV_IDLE_EN; */
-
-	udc = kzalloc(sizeof(*udc), GFP_KERNEL);
-	if (!udc)
-		return -ENOMEM;
-
-	spin_lock_init(&udc->lock);
-
-	udc->gadget.ops = &omap_gadget_ops;
-	udc->gadget.ep0 = &udc->ep[0].ep;
-	INIT_LIST_HEAD(&udc->gadget.ep_list);
-	INIT_LIST_HEAD(&udc->iso);
-	udc->gadget.speed = USB_SPEED_UNKNOWN;
-	udc->gadget.max_speed = USB_SPEED_FULL;
-	udc->gadget.name = driver_name;
-	udc->gadget.quirk_ep_out_aligned_size = 1;
-	udc->transceiver = xceiv;
-
-	/* ep0 is special; put it right after the SETUP buffer */
-	buf = omap_ep_setup("ep0", 0, USB_ENDPOINT_XFER_CONTROL,
-			8 /* after SETUP */, 64 /* maxpacket */, 0);
-	list_del_init(&udc->ep[0].ep.ep_list);
-
-	/* initially disable all non-ep0 endpoints */
-	for (tmp = 1; tmp < 15; tmp++) {
-		omap_writew(0, UDC_EP_RX(tmp));
-		omap_writew(0, UDC_EP_TX(tmp));
-	}
-
-#define OMAP_BULK_EP(name, addr) \
-	buf = omap_ep_setup(name "-bulk", addr, \
-			USB_ENDPOINT_XFER_BULK, buf, 64, 1);
-#define OMAP_INT_EP(name, addr, maxp) \
-	buf = omap_ep_setup(name "-int", addr, \
-			USB_ENDPOINT_XFER_INT, buf, maxp, 0);
-#define OMAP_ISO_EP(name, addr, maxp) \
-	buf = omap_ep_setup(name "-iso", addr, \
-			USB_ENDPOINT_XFER_ISOC, buf, maxp, 1);
-
-	switch (fifo_mode) {
-	case 0:
-		OMAP_BULK_EP("ep1in",  USB_DIR_IN  | 1);
-		OMAP_BULK_EP("ep2out", USB_DIR_OUT | 2);
-		OMAP_INT_EP("ep3in",   USB_DIR_IN  | 3, 16);
-		break;
-	case 1:
-		OMAP_BULK_EP("ep1in",  USB_DIR_IN  | 1);
-		OMAP_BULK_EP("ep2out", USB_DIR_OUT | 2);
-		OMAP_INT_EP("ep9in",   USB_DIR_IN  | 9, 16);
-
-		OMAP_BULK_EP("ep3in",  USB_DIR_IN  | 3);
-		OMAP_BULK_EP("ep4out", USB_DIR_OUT | 4);
-		OMAP_INT_EP("ep10in",  USB_DIR_IN  | 10, 16);
-
-		OMAP_BULK_EP("ep5in",  USB_DIR_IN  | 5);
-		OMAP_BULK_EP("ep5out", USB_DIR_OUT | 5);
-		OMAP_INT_EP("ep11in",  USB_DIR_IN  | 11, 16);
-
-		OMAP_BULK_EP("ep6in",  USB_DIR_IN  | 6);
-		OMAP_BULK_EP("ep6out", USB_DIR_OUT | 6);
-		OMAP_INT_EP("ep12in",  USB_DIR_IN  | 12, 16);
-
-		OMAP_BULK_EP("ep7in",  USB_DIR_IN  | 7);
-		OMAP_BULK_EP("ep7out", USB_DIR_OUT | 7);
-		OMAP_INT_EP("ep13in",  USB_DIR_IN  | 13, 16);
-		OMAP_INT_EP("ep13out", USB_DIR_OUT | 13, 16);
-
-		OMAP_BULK_EP("ep8in",  USB_DIR_IN  | 8);
-		OMAP_BULK_EP("ep8out", USB_DIR_OUT | 8);
-		OMAP_INT_EP("ep14in",  USB_DIR_IN  | 14, 16);
-		OMAP_INT_EP("ep14out", USB_DIR_OUT | 14, 16);
-
-		OMAP_BULK_EP("ep15in",  USB_DIR_IN  | 15);
-		OMAP_BULK_EP("ep15out", USB_DIR_OUT | 15);
-
-		break;
-
-#ifdef	USE_ISO
-	case 2:			/* mixed iso/bulk */
-		OMAP_ISO_EP("ep1in",   USB_DIR_IN  | 1, 256);
-		OMAP_ISO_EP("ep2out",  USB_DIR_OUT | 2, 256);
-		OMAP_ISO_EP("ep3in",   USB_DIR_IN  | 3, 128);
-		OMAP_ISO_EP("ep4out",  USB_DIR_OUT | 4, 128);
-
-		OMAP_INT_EP("ep5in",   USB_DIR_IN  | 5, 16);
-
-		OMAP_BULK_EP("ep6in",  USB_DIR_IN  | 6);
-		OMAP_BULK_EP("ep7out", USB_DIR_OUT | 7);
-		OMAP_INT_EP("ep8in",   USB_DIR_IN  | 8, 16);
-		break;
-	case 3:			/* mixed bulk/iso */
-		OMAP_BULK_EP("ep1in",  USB_DIR_IN  | 1);
-		OMAP_BULK_EP("ep2out", USB_DIR_OUT | 2);
-		OMAP_INT_EP("ep3in",   USB_DIR_IN  | 3, 16);
-
-		OMAP_BULK_EP("ep4in",  USB_DIR_IN  | 4);
-		OMAP_BULK_EP("ep5out", USB_DIR_OUT | 5);
-		OMAP_INT_EP("ep6in",   USB_DIR_IN  | 6, 16);
-
-		OMAP_ISO_EP("ep7in",   USB_DIR_IN  | 7, 256);
-		OMAP_ISO_EP("ep8out",  USB_DIR_OUT | 8, 256);
-		OMAP_INT_EP("ep9in",   USB_DIR_IN  | 9, 16);
-		break;
-#endif
-
-	/* add more modes as needed */
-
-	default:
-		ERR("unsupported fifo_mode #%d\n", fifo_mode);
-		return -ENODEV;
-	}
-	omap_writew(UDC_CFG_LOCK|UDC_SELF_PWR, UDC_SYSCON1);
-	INFO("fifo mode %d, %d bytes not used\n", fifo_mode, 2048 - buf);
-	return 0;
-}
-
-static int omap_udc_probe(struct platform_device *pdev)
-{
-	int			status = -ENODEV;
-	int			hmc;
-	struct usb_phy		*xceiv = NULL;
-	const char		*type = NULL;
-	struct omap_usb_config	*config = dev_get_platdata(&pdev->dev);
-	struct clk		*dc_clk = NULL;
-	struct clk		*hhc_clk = NULL;
-
-	/* NOTE:  "knows" the order of the resources! */
-	if (!request_mem_region(pdev->resource[0].start,
-			resource_size(&pdev->resource[0]),
-			driver_name)) {
-		DBG("request_mem_region failed\n");
-		return -EBUSY;
-	}
-
-	if (cpu_is_omap16xx()) {
-		dc_clk = clk_get(&pdev->dev, "usb_dc_ck");
-		hhc_clk = clk_get(&pdev->dev, "usb_hhc_ck");
-		BUG_ON(IS_ERR(dc_clk) || IS_ERR(hhc_clk));
-		/* can't use omap_udc_enable_clock yet */
-		clk_prepare_enable(dc_clk);
-		clk_prepare_enable(hhc_clk);
-		udelay(100);
-	}
-
-	INFO("OMAP UDC rev %d.%d%s\n",
-		omap_readw(UDC_REV) >> 4, omap_readw(UDC_REV) & 0xf,
-		config->otg ? ", Mini-AB" : "");
-
-	/* use the mode given to us by board init code */
-	if (cpu_is_omap15xx()) {
-		hmc = HMC_1510;
-		type = "(unknown)";
-
-		if (machine_without_vbus_sense()) {
-			/* just set up software VBUS detect, and then
-			 * later rig it so we always report VBUS.
-			 * FIXME without really sensing VBUS, we can't
-			 * know when to turn PULLUP_EN on/off; and that
-			 * means we always "need" the 48MHz clock.
-			 */
-			u32 tmp = omap_readl(FUNC_MUX_CTRL_0);
-			tmp &= ~VBUS_CTRL_1510;
-			omap_writel(tmp, FUNC_MUX_CTRL_0);
-			tmp |= VBUS_MODE_1510;
-			tmp &= ~VBUS_CTRL_1510;
-			omap_writel(tmp, FUNC_MUX_CTRL_0);
-		}
-	} else {
-		/* The transceiver may package some GPIO logic or handle
-		 * loopback and/or transceiverless setup; if we find one,
-		 * use it.  Except for OTG, we don't _need_ to talk to one;
-		 * but not having one probably means no VBUS detection.
-		 */
-		xceiv = usb_get_phy(USB_PHY_TYPE_USB2);
-		if (!IS_ERR_OR_NULL(xceiv))
-			type = xceiv->label;
-		else if (config->otg) {
-			DBG("OTG requires external transceiver!\n");
-			goto cleanup0;
-		}
-
-		hmc = HMC_1610;
-
-		switch (hmc) {
-		case 0:			/* POWERUP DEFAULT == 0 */
-		case 4:
-		case 12:
-		case 20:
-			if (!cpu_is_omap1710()) {
-				type = "integrated";
-				break;
-			}
-			fallthrough;
-		case 3:
-		case 11:
-		case 16:
-		case 19:
-		case 25:
-			if (IS_ERR_OR_NULL(xceiv)) {
-				DBG("external transceiver not registered!\n");
-				type = "unknown";
-			}
-			break;
-		case 21:			/* internal loopback */
-			type = "loopback";
-			break;
-		case 14:			/* transceiverless */
-			if (cpu_is_omap1710())
-				goto bad_on_1710;
-			fallthrough;
-		case 13:
-		case 15:
-			type = "no";
-			break;
-
-		default:
-bad_on_1710:
-			ERR("unrecognized UDC HMC mode %d\n", hmc);
-			goto cleanup0;
-		}
-	}
-
-	INFO("hmc mode %d, %s transceiver\n", hmc, type);
-
-	/* a "gadget" abstracts/virtualizes the controller */
-	status = omap_udc_setup(pdev, xceiv);
-	if (status)
-		goto cleanup0;
-
-	xceiv = NULL;
-	/* "udc" is now valid */
-	pullup_disable(udc);
-#if	IS_ENABLED(CONFIG_USB_OHCI_HCD)
-	udc->gadget.is_otg = (config->otg != 0);
-#endif
-
-	/* starting with omap1710 es2.0, clear toggle is a separate bit */
-	if (omap_readw(UDC_REV) >= 0x61)
-		udc->clr_halt = UDC_RESET_EP | UDC_CLRDATA_TOGGLE;
-	else
-		udc->clr_halt = UDC_RESET_EP;
-
-	/* USB general purpose IRQ:  ep0, state changes, dma, etc */
-	status = devm_request_irq(&pdev->dev, pdev->resource[1].start,
-				  omap_udc_irq, 0, driver_name, udc);
-	if (status != 0) {
-		ERR("can't get irq %d, err %d\n",
-			(int) pdev->resource[1].start, status);
-		goto cleanup1;
-	}
-
-	/* USB "non-iso" IRQ (PIO for all but ep0) */
-	status = devm_request_irq(&pdev->dev, pdev->resource[2].start,
-				  omap_udc_pio_irq, 0, "omap_udc pio", udc);
-	if (status != 0) {
-		ERR("can't get irq %d, err %d\n",
-			(int) pdev->resource[2].start, status);
-		goto cleanup1;
-	}
-#ifdef	USE_ISO
-	status = devm_request_irq(&pdev->dev, pdev->resource[3].start,
-				  omap_udc_iso_irq, 0, "omap_udc iso", udc);
-	if (status != 0) {
-		ERR("can't get irq %d, err %d\n",
-			(int) pdev->resource[3].start, status);
-		goto cleanup1;
-	}
-#endif
-	if (cpu_is_omap16xx()) {
-		udc->dc_clk = dc_clk;
-		udc->hhc_clk = hhc_clk;
-		clk_disable(hhc_clk);
-		clk_disable(dc_clk);
-	}
-
-	create_proc_file();
-	return usb_add_gadget_udc_release(&pdev->dev, &udc->gadget,
-					  omap_udc_release);
-
-cleanup1:
-	kfree(udc);
-	udc = NULL;
-
-cleanup0:
-	if (!IS_ERR_OR_NULL(xceiv))
-		usb_put_phy(xceiv);
-
-	if (cpu_is_omap16xx()) {
-		clk_disable_unprepare(hhc_clk);
-		clk_disable_unprepare(dc_clk);
-		clk_put(hhc_clk);
-		clk_put(dc_clk);
-	}
-
-	release_mem_region(pdev->resource[0].start,
-			   resource_size(&pdev->resource[0]));
-
-	return status;
-}
-
-static int omap_udc_remove(struct platform_device *pdev)
-{
-	DECLARE_COMPLETION_ONSTACK(done);
-
-	udc->done = &done;
-
-	usb_del_gadget_udc(&udc->gadget);
-
-	wait_for_completion(&done);
-
-	release_mem_region(pdev->resource[0].start,
-			   resource_size(&pdev->resource[0]));
-
-	return 0;
-}
-
-/* suspend/resume/wakeup from sysfs (echo > power/state) or when the
- * system is forced into deep sleep
- *
- * REVISIT we should probably reject suspend requests when there's a host
- * session active, rather than disconnecting, at least on boards that can
- * report VBUS irqs (UDC_DEVSTAT.UDC_ATT).  And in any case, we need to
- * make host resumes and VBUS detection trigger OMAP wakeup events; that
- * may involve talking to an external transceiver (e.g. isp1301).
- */
-
-static int omap_udc_suspend(struct platform_device *dev, pm_message_t message)
-{
-	u32	devstat;
-
-	devstat = omap_readw(UDC_DEVSTAT);
-
-	/* we're requesting 48 MHz clock if the pullup is enabled
-	 * (== we're attached to the host) and we're not suspended,
-	 * which would prevent entry to deep sleep...
-	 */
-	if ((devstat & UDC_ATT) != 0 && (devstat & UDC_SUS) == 0) {
-		WARNING("session active; suspend requires disconnect\n");
-		omap_pullup(&udc->gadget, 0);
-	}
-
-	return 0;
-}
-
-static int omap_udc_resume(struct platform_device *dev)
-{
-	DBG("resume + wakeup/SRP\n");
-	omap_pullup(&udc->gadget, 1);
-
-	/* maybe the host would enumerate us if we nudged it */
-	msleep(100);
-	return omap_wakeup(&udc->gadget);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static struct platform_driver udc_driver = {
-	.probe		= omap_udc_probe,
-	.remove		= omap_udc_remove,
-	.suspend	= omap_udc_suspend,
-	.resume		= omap_udc_resume,
-	.driver		= {
-		.name	= driver_name,
-	},
-};
-
-module_platform_driver(udc_driver);
-
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:omap_udc");
diff --git a/drivers/usb/gadget/udc/omap_udc.h b/drivers/usb/gadget/udc/omap_udc.h
deleted file mode 100644
index 00f9e608e755..000000000000
--- a/drivers/usb/gadget/udc/omap_udc.h
+++ /dev/null
@@ -1,207 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * omap_udc.h -- for omap 3.2 udc, with OTG support
- *
- * 2004 (C) Texas Instruments, Inc.
- * 2004 (C) David Brownell
- */
-
-/*
- * USB device/endpoint management registers
- */
-
-#define	UDC_REV				(UDC_BASE + 0x0)	/* Revision */
-#define	UDC_EP_NUM			(UDC_BASE + 0x4)	/* Which endpoint */
-#	define	UDC_SETUP_SEL		(1 << 6)
-#	define	UDC_EP_SEL		(1 << 5)
-#	define	UDC_EP_DIR		(1 << 4)
-	/* low 4 bits for endpoint number */
-#define	UDC_DATA			(UDC_BASE + 0x08)	/* Endpoint FIFO */
-#define	UDC_CTRL			(UDC_BASE + 0x0C)	/* Endpoint control */
-#	define	UDC_CLR_HALT		(1 << 7)
-#	define	UDC_SET_HALT		(1 << 6)
-#	define	UDC_CLRDATA_TOGGLE	(1 << 3)
-#	define	UDC_SET_FIFO_EN		(1 << 2)
-#	define	UDC_CLR_EP		(1 << 1)
-#	define	UDC_RESET_EP		(1 << 0)
-#define	UDC_STAT_FLG			(UDC_BASE + 0x10)	/* Endpoint status */
-#	define	UDC_NO_RXPACKET		(1 << 15)
-#	define	UDC_MISS_IN		(1 << 14)
-#	define	UDC_DATA_FLUSH		(1 << 13)
-#	define	UDC_ISO_ERR		(1 << 12)
-#	define	UDC_ISO_FIFO_EMPTY	(1 << 9)
-#	define	UDC_ISO_FIFO_FULL	(1 << 8)
-#	define	UDC_EP_HALTED		(1 << 6)
-#	define	UDC_STALL		(1 << 5)
-#	define	UDC_NAK			(1 << 4)
-#	define	UDC_ACK			(1 << 3)
-#	define	UDC_FIFO_EN		(1 << 2)
-#	define	UDC_NON_ISO_FIFO_EMPTY	(1 << 1)
-#	define	UDC_NON_ISO_FIFO_FULL	(1 << 0)
-#define	UDC_RXFSTAT			(UDC_BASE + 0x14)	/* OUT bytecount */
-#define	UDC_SYSCON1			(UDC_BASE + 0x18)	/* System config 1 */
-#	define	UDC_CFG_LOCK		(1 << 8)
-#	define	UDC_DATA_ENDIAN		(1 << 7)
-#	define	UDC_DMA_ENDIAN		(1 << 6)
-#	define	UDC_NAK_EN		(1 << 4)
-#	define	UDC_AUTODECODE_DIS	(1 << 3)
-#	define	UDC_SELF_PWR		(1 << 2)
-#	define	UDC_SOFF_DIS		(1 << 1)
-#	define	UDC_PULLUP_EN		(1 << 0)
-#define	UDC_SYSCON2			(UDC_BASE + 0x1C)	/* System config 2 */
-#	define	UDC_RMT_WKP		(1 << 6)
-#	define	UDC_STALL_CMD		(1 << 5)
-#	define	UDC_DEV_CFG		(1 << 3)
-#	define	UDC_CLR_CFG		(1 << 2)
-#define	UDC_DEVSTAT			(UDC_BASE + 0x20)	/* Device status */
-#	define	UDC_B_HNP_ENABLE	(1 << 9)
-#	define	UDC_A_HNP_SUPPORT	(1 << 8)
-#	define	UDC_A_ALT_HNP_SUPPORT	(1 << 7)
-#	define	UDC_R_WK_OK		(1 << 6)
-#	define	UDC_USB_RESET		(1 << 5)
-#	define	UDC_SUS			(1 << 4)
-#	define	UDC_CFG			(1 << 3)
-#	define	UDC_ADD			(1 << 2)
-#	define	UDC_DEF			(1 << 1)
-#	define	UDC_ATT			(1 << 0)
-#define	UDC_SOF				(UDC_BASE + 0x24)	/* Start of frame */
-#	define	UDC_FT_LOCK		(1 << 12)
-#	define	UDC_TS_OK		(1 << 11)
-#	define	UDC_TS			0x03ff
-#define	UDC_IRQ_EN			(UDC_BASE + 0x28)	/* Interrupt enable */
-#	define	UDC_SOF_IE		(1 << 7)
-#	define	UDC_EPN_RX_IE		(1 << 5)
-#	define	UDC_EPN_TX_IE		(1 << 4)
-#	define	UDC_DS_CHG_IE		(1 << 3)
-#	define	UDC_EP0_IE		(1 << 0)
-#define	UDC_DMA_IRQ_EN			(UDC_BASE + 0x2C)	/* DMA irq enable */
-	/* rx/tx dma channels numbered 1-3 not 0-2 */
-#	define	UDC_TX_DONE_IE(n)	(1 << (4 * (n) - 2))
-#	define	UDC_RX_CNT_IE(n)	(1 << (4 * (n) - 3))
-#	define	UDC_RX_EOT_IE(n)	(1 << (4 * (n) - 4))
-#define	UDC_IRQ_SRC			(UDC_BASE + 0x30)	/* Interrupt source */
-#	define	UDC_TXN_DONE		(1 << 10)
-#	define	UDC_RXN_CNT		(1 << 9)
-#	define	UDC_RXN_EOT		(1 << 8)
-#	define	UDC_IRQ_SOF		(1 << 7)
-#	define	UDC_EPN_RX		(1 << 5)
-#	define	UDC_EPN_TX		(1 << 4)
-#	define	UDC_DS_CHG		(1 << 3)
-#	define	UDC_SETUP		(1 << 2)
-#	define	UDC_EP0_RX		(1 << 1)
-#	define	UDC_EP0_TX		(1 << 0)
-#	define	UDC_IRQ_SRC_MASK	0x7bf
-#define	UDC_EPN_STAT			(UDC_BASE + 0x34)	/* EP irq status */
-#define	UDC_DMAN_STAT			(UDC_BASE + 0x38)	/* DMA irq status */
-#	define	UDC_DMA_RX_SB		(1 << 12)
-#	define	UDC_DMA_RX_SRC(x)	(((x)>>8) & 0xf)
-#	define	UDC_DMA_TX_SRC(x)	(((x)>>0) & 0xf)
-
-
-/* DMA configuration registers:  up to three channels in each direction.  */
-#define	UDC_RXDMA_CFG			(UDC_BASE + 0x40)	/* 3 eps for RX DMA */
-#	define	UDC_DMA_REQ		(1 << 12)
-#define	UDC_TXDMA_CFG			(UDC_BASE + 0x44)	/* 3 eps for TX DMA */
-#define	UDC_DATA_DMA			(UDC_BASE + 0x48)	/* rx/tx fifo addr */
-
-/* rx/tx dma control, numbering channels 1-3 not 0-2 */
-#define	UDC_TXDMA(chan)			(UDC_BASE + 0x50 - 4 + 4 * (chan))
-#	define UDC_TXN_EOT		(1 << 15)	/* bytes vs packets */
-#	define UDC_TXN_START		(1 << 14)	/* start transfer */
-#	define UDC_TXN_TSC		0x03ff		/* units in xfer */
-#define	UDC_RXDMA(chan)			(UDC_BASE + 0x60 - 4 + 4 * (chan))
-#	define UDC_RXN_STOP		(1 << 15)	/* enable EOT irq */
-#	define UDC_RXN_TC		0x00ff		/* packets in xfer */
-
-
-/*
- * Endpoint configuration registers (used before CFG_LOCK is set)
- * UDC_EP_TX(0) is unused
- */
-#define	UDC_EP_RX(endpoint)		(UDC_BASE + 0x80 + (endpoint)*4)
-#	define	UDC_EPN_RX_VALID	(1 << 15)
-#	define	UDC_EPN_RX_DB		(1 << 14)
-	/* buffer size in bits 13, 12 */
-#	define	UDC_EPN_RX_ISO		(1 << 11)
-	/* buffer pointer in low 11 bits */
-#define	UDC_EP_TX(endpoint)		(UDC_BASE + 0xc0 + (endpoint)*4)
-	/* same bitfields as in RX */
-
-/*-------------------------------------------------------------------------*/
-
-struct omap_req {
-	struct usb_request		req;
-	struct list_head		queue;
-	unsigned			dma_bytes;
-	unsigned			mapped:1;
-};
-
-struct omap_ep {
-	struct usb_ep			ep;
-	struct list_head		queue;
-	unsigned long			irqs;
-	struct list_head		iso;
-	char				name[14];
-	u16				maxpacket;
-	u8				bEndpointAddress;
-	u8				bmAttributes;
-	unsigned			double_buf:1;
-	unsigned			stopped:1;
-	unsigned			fnf:1;
-	unsigned			has_dma:1;
-	u8				ackwait;
-	u8				dma_channel;
-	u16				dma_counter;
-	int				lch;
-	struct omap_udc			*udc;
-	struct timer_list		timer;
-};
-
-struct omap_udc {
-	struct usb_gadget		gadget;
-	struct usb_gadget_driver	*driver;
-	spinlock_t			lock;
-	struct omap_ep			ep[32];
-	u16				devstat;
-	u16				clr_halt;
-	struct usb_phy			*transceiver;
-	struct list_head		iso;
-	unsigned			softconnect:1;
-	unsigned			vbus_active:1;
-	unsigned			ep0_pending:1;
-	unsigned			ep0_in:1;
-	unsigned			ep0_set_config:1;
-	unsigned			ep0_reset_config:1;
-	unsigned			ep0_setup:1;
-	struct completion		*done;
-	struct clk			*dc_clk;
-	struct clk			*hhc_clk;
-	unsigned			clk_requested:1;
-};
-
-/*-------------------------------------------------------------------------*/
-
-#ifdef VERBOSE
-#    define VDBG		DBG
-#else
-#    define VDBG(stuff...)	do{}while(0)
-#endif
-
-#define ERR(stuff...)		pr_err("udc: " stuff)
-#define WARNING(stuff...)	pr_warn("udc: " stuff)
-#define INFO(stuff...)		pr_info("udc: " stuff)
-#define DBG(stuff...)		pr_debug("udc: " stuff)
-
-/*-------------------------------------------------------------------------*/
-
-/* MOD_CONF_CTRL_0 */
-#define VBUS_W2FC_1510		(1 << 17)	/* 0 gpio0, 1 dvdd2 pin */
-
-/* FUNC_MUX_CTRL_0 */
-#define	VBUS_CTRL_1510		(1 << 19)	/* 1 connected (software) */
-#define	VBUS_MODE_1510		(1 << 18)	/* 0 hardware, 1 software */
-
-#define	HMC_1510	((omap_readl(MOD_CONF_CTRL_0) >> 1) & 0x3f)
-#define	HMC_1610	(omap_readl(OTG_SYSCON_2) & 0x3f)
-#define	HMC		(cpu_is_omap15xx() ? HMC_1510 : HMC_1610)
-
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index e0329a08f612..11d028860345 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -406,14 +406,6 @@ config USB_OHCI_HCD
 
 if USB_OHCI_HCD
 
-config USB_OHCI_HCD_OMAP1
-	tristate "OHCI support for OMAP1/2 chips"
-	depends on ARCH_OMAP1
-	depends on ISP1301_OMAP
-	default y
-	help
-	  Enables support for the OHCI controller on OMAP1/2 chips.
-
 config USB_OHCI_HCD_SPEAR
 	tristate "Support for ST SPEAr on-chip OHCI USB controller"
 	depends on USB_OHCI_HCD && (PLAT_SPEAR || COMPILE_TEST)
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 6d8ee264c9b2..76c588d6c560 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -55,7 +55,6 @@ obj-$(CONFIG_USB_OHCI_HCD)	+= ohci-hcd.o
 obj-$(CONFIG_USB_OHCI_HCD_PCI)	+= ohci-pci.o
 obj-$(CONFIG_USB_OHCI_HCD_PLATFORM)	+= ohci-platform.o
 obj-$(CONFIG_USB_OHCI_EXYNOS)	+= ohci-exynos.o
-obj-$(CONFIG_USB_OHCI_HCD_OMAP1)	+= ohci-omap.o
 obj-$(CONFIG_USB_OHCI_HCD_SPEAR)	+= ohci-spear.o
 obj-$(CONFIG_USB_OHCI_HCD_STI)	+= ohci-st.o
 obj-$(CONFIG_USB_OHCI_HCD_AT91)	+= ohci-at91.o
diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c
deleted file mode 100644
index d7f594db56c6..000000000000
--- a/drivers/usb/host/ohci-omap.c
+++ /dev/null
@@ -1,435 +0,0 @@
-// SPDX-License-Identifier: GPL-1.0+
-/*
- * OHCI HCD (Host Controller Driver) for USB.
- *
- * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
- * (C) Copyright 2000-2005 David Brownell
- * (C) Copyright 2002 Hewlett-Packard Company
- *
- * OMAP Bus Glue
- *
- * Modified for OMAP by Tony Lindgren <tony@atomide.com>
- * Based on the 2.4 OMAP OHCI driver originally done by MontaVista Software Inc.
- * and on ohci-sa1111.c by Christopher Hoover <ch@hpl.hp.com>
- *
- * This file is licenced under the GPL.
- */
-
-#include <linux/clk.h>
-#include <linux/dma-mapping.h>
-#include <linux/err.h>
-#include <linux/gpio/consumer.h>
-#include <linux/io.h>
-#include <linux/jiffies.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/usb/otg.h>
-#include <linux/platform_device.h>
-#include <linux/platform_data/usb-omap1.h>
-#include <linux/soc/ti/omap1-usb.h>
-#include <linux/soc/ti/omap1-mux.h>
-#include <linux/soc/ti/omap1-soc.h>
-#include <linux/soc/ti/omap1-io.h>
-#include <linux/signal.h>
-#include <linux/usb.h>
-#include <linux/usb/hcd.h>
-
-#include "ohci.h"
-
-#include <asm/io.h>
-#include <asm/mach-types.h>
-
-#define DRIVER_DESC "OHCI OMAP driver"
-
-struct ohci_omap_priv {
-	struct clk *usb_host_ck;
-	struct clk *usb_dc_ck;
-	struct gpio_desc *power;
-	struct gpio_desc *overcurrent;
-};
-
-static const char hcd_name[] = "ohci-omap";
-static struct hc_driver __read_mostly ohci_omap_hc_driver;
-
-#define hcd_to_ohci_omap_priv(h) \
-	((struct ohci_omap_priv *)hcd_to_ohci(h)->priv)
-
-static void omap_ohci_clock_power(struct ohci_omap_priv *priv, int on)
-{
-	if (on) {
-		clk_enable(priv->usb_dc_ck);
-		clk_enable(priv->usb_host_ck);
-		/* guesstimate for T5 == 1x 32K clock + APLL lock time */
-		udelay(100);
-	} else {
-		clk_disable(priv->usb_host_ck);
-		clk_disable(priv->usb_dc_ck);
-	}
-}
-
-#ifdef	CONFIG_USB_OTG
-
-static void start_hnp(struct ohci_hcd *ohci)
-{
-	struct usb_hcd *hcd = ohci_to_hcd(ohci);
-	const unsigned	port = hcd->self.otg_port - 1;
-	unsigned long	flags;
-	u32 l;
-
-	otg_start_hnp(hcd->usb_phy->otg);
-
-	local_irq_save(flags);
-	hcd->usb_phy->otg->state = OTG_STATE_A_SUSPEND;
-	writel (RH_PS_PSS, &ohci->regs->roothub.portstatus [port]);
-	l = omap_readl(OTG_CTRL);
-	l &= ~OTG_A_BUSREQ;
-	omap_writel(l, OTG_CTRL);
-	local_irq_restore(flags);
-}
-
-#endif
-
-/*-------------------------------------------------------------------------*/
-
-static int ohci_omap_reset(struct usb_hcd *hcd)
-{
-	struct ohci_hcd		*ohci = hcd_to_ohci(hcd);
-	struct omap_usb_config	*config = dev_get_platdata(hcd->self.controller);
-	struct ohci_omap_priv	*priv = hcd_to_ohci_omap_priv(hcd);
-	int			need_transceiver = (config->otg != 0);
-	int			ret;
-
-	dev_dbg(hcd->self.controller, "starting USB Controller\n");
-
-	if (config->otg) {
-		hcd->self.otg_port = config->otg;
-		/* default/minimum OTG power budget:  8 mA */
-		hcd->power_budget = 8;
-	}
-
-	/* XXX OMAP16xx only */
-	if (config->ocpi_enable)
-		config->ocpi_enable();
-
-#ifdef	CONFIG_USB_OTG
-	if (need_transceiver) {
-		hcd->usb_phy = usb_get_phy(USB_PHY_TYPE_USB2);
-		if (!IS_ERR_OR_NULL(hcd->usb_phy)) {
-			int	status = otg_set_host(hcd->usb_phy->otg,
-						&ohci_to_hcd(ohci)->self);
-			dev_dbg(hcd->self.controller, "init %s phy, status %d\n",
-					hcd->usb_phy->label, status);
-			if (status) {
-				usb_put_phy(hcd->usb_phy);
-				return status;
-			}
-		} else {
-			return -EPROBE_DEFER;
-		}
-		hcd->skip_phy_initialization = 1;
-		ohci->start_hnp = start_hnp;
-	}
-#endif
-
-	omap_ohci_clock_power(priv, 1);
-
-	if (config->lb_reset)
-		config->lb_reset();
-
-	ret = ohci_setup(hcd);
-	if (ret < 0)
-		return ret;
-
-	if (config->otg || config->rwc) {
-		ohci->hc_control = OHCI_CTRL_RWC;
-		writel(OHCI_CTRL_RWC, &ohci->regs->control);
-	}
-
-	/* board-specific power switching and overcurrent support */
-	if (machine_is_omap_osk()) {
-		u32	rh = roothub_a (ohci);
-
-		/* power switching (ganged by default) */
-		rh &= ~RH_A_NPS;
-
-		/* TPS2045 switch for internal transceiver (port 1) */
-		if (machine_is_omap_osk()) {
-			ohci_to_hcd(ohci)->power_budget = 250;
-
-			rh &= ~RH_A_NOCP;
-
-			/* gpio9 for overcurrent detction */
-			omap_cfg_reg(W8_1610_GPIO9);
-
-			/* for paranoia's sake:  disable USB.PUEN */
-			omap_cfg_reg(W4_USB_HIGHZ);
-		}
-		ohci_writel(ohci, rh, &ohci->regs->roothub.a);
-		ohci->flags &= ~OHCI_QUIRK_HUB_POWER;
-	} else if (machine_is_nokia770()) {
-		/* We require a self-powered hub, which should have
-		 * plenty of power. */
-		ohci_to_hcd(ohci)->power_budget = 0;
-	}
-
-	/* FIXME hub_wq hub requests should manage power switching */
-	if (config->transceiver_power)
-		return config->transceiver_power(1);
-
-	if (priv->power)
-		gpiod_set_value_cansleep(priv->power, 0);
-
-	/* board init will have already handled HMC and mux setup.
-	 * any external transceiver should already be initialized
-	 * too, so all configured ports use the right signaling now.
-	 */
-
-	return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/**
- * ohci_hcd_omap_probe - initialize OMAP-based HCDs
- * @pdev:	USB controller to probe
- *
- * Context: task context, might sleep
- *
- * Allocates basic resources for this USB host controller, and
- * then invokes the start() method for the HCD associated with it
- * through the hotplug entry's driver_data.
- */
-static int ohci_hcd_omap_probe(struct platform_device *pdev)
-{
-	int retval, irq;
-	struct usb_hcd *hcd = 0;
-	struct ohci_omap_priv *priv;
-
-	if (pdev->num_resources != 2) {
-		dev_err(&pdev->dev, "invalid num_resources: %i\n",
-		       pdev->num_resources);
-		return -ENODEV;
-	}
-
-	if (pdev->resource[0].flags != IORESOURCE_MEM
-			|| pdev->resource[1].flags != IORESOURCE_IRQ) {
-		dev_err(&pdev->dev, "invalid resource type\n");
-		return -ENODEV;
-	}
-
-	hcd = usb_create_hcd(&ohci_omap_hc_driver, &pdev->dev,
-			dev_name(&pdev->dev));
-	if (!hcd)
-		return -ENOMEM;
-
-	hcd->rsrc_start = pdev->resource[0].start;
-	hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
-	priv = hcd_to_ohci_omap_priv(hcd);
-
-	/* Obtain two optional GPIO lines */
-	priv->power = devm_gpiod_get_optional(&pdev->dev, "power", GPIOD_ASIS);
-	if (IS_ERR(priv->power)) {
-		retval = PTR_ERR(priv->power);
-		goto err_put_hcd;
-	}
-	if (priv->power)
-		gpiod_set_consumer_name(priv->power, "OHCI power");
-
-	/*
-	 * This "overcurrent" GPIO line isn't really used in the code,
-	 * but has a designated hardware function.
-	 * TODO: implement proper overcurrent handling.
-	 */
-	priv->overcurrent = devm_gpiod_get_optional(&pdev->dev, "overcurrent",
-						    GPIOD_IN);
-	if (IS_ERR(priv->overcurrent)) {
-		retval = PTR_ERR(priv->overcurrent);
-		goto err_put_hcd;
-	}
-	if (priv->overcurrent)
-		gpiod_set_consumer_name(priv->overcurrent, "OHCI overcurrent");
-
-	priv->usb_host_ck = clk_get(&pdev->dev, "usb_hhc_ck");
-	if (IS_ERR(priv->usb_host_ck)) {
-		retval = PTR_ERR(priv->usb_host_ck);
-		goto err_put_hcd;
-	}
-
-	retval = clk_prepare(priv->usb_host_ck);
-	if (retval)
-		goto err_put_host_ck;
-
-	if (!cpu_is_omap15xx())
-		priv->usb_dc_ck = clk_get(&pdev->dev, "usb_dc_ck");
-	else
-		priv->usb_dc_ck = clk_get(&pdev->dev, "lb_ck");
-
-	if (IS_ERR(priv->usb_dc_ck)) {
-		retval = PTR_ERR(priv->usb_dc_ck);
-		goto err_unprepare_host_ck;
-	}
-
-	retval = clk_prepare(priv->usb_dc_ck);
-	if (retval)
-		goto err_put_dc_ck;
-
-	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
-		dev_dbg(&pdev->dev, "request_mem_region failed\n");
-		retval = -EBUSY;
-		goto err_unprepare_dc_ck;
-	}
-
-	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
-	if (!hcd->regs) {
-		dev_err(&pdev->dev, "can't ioremap OHCI HCD\n");
-		retval = -ENOMEM;
-		goto err2;
-	}
-
-	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		retval = irq;
-		goto err3;
-	}
-	retval = usb_add_hcd(hcd, irq, 0);
-	if (retval)
-		goto err3;
-
-	device_wakeup_enable(hcd->self.controller);
-	return 0;
-err3:
-	iounmap(hcd->regs);
-err2:
-	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
-err_unprepare_dc_ck:
-	clk_unprepare(priv->usb_dc_ck);
-err_put_dc_ck:
-	clk_put(priv->usb_dc_ck);
-err_unprepare_host_ck:
-	clk_unprepare(priv->usb_host_ck);
-err_put_host_ck:
-	clk_put(priv->usb_host_ck);
-err_put_hcd:
-	usb_put_hcd(hcd);
-	return retval;
-}
-
-
-/* may be called with controller, bus, and devices active */
-
-/**
- * ohci_hcd_omap_remove - shutdown processing for OMAP-based HCDs
- * @pdev: USB Host Controller being removed
- *
- * Context: task context, might sleep
- *
- * Reverses the effect of ohci_hcd_omap_probe(), first invoking
- * the HCD's stop() method.  It is always called from a thread
- * context, normally "rmmod", "apmd", or something similar.
- */
-static int ohci_hcd_omap_remove(struct platform_device *pdev)
-{
-	struct usb_hcd	*hcd = platform_get_drvdata(pdev);
-	struct ohci_omap_priv *priv = hcd_to_ohci_omap_priv(hcd);
-
-	dev_dbg(hcd->self.controller, "stopping USB Controller\n");
-	usb_remove_hcd(hcd);
-	omap_ohci_clock_power(priv, 0);
-	if (!IS_ERR_OR_NULL(hcd->usb_phy)) {
-		(void) otg_set_host(hcd->usb_phy->otg, 0);
-		usb_put_phy(hcd->usb_phy);
-	}
-	iounmap(hcd->regs);
-	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
-	clk_unprepare(priv->usb_dc_ck);
-	clk_put(priv->usb_dc_ck);
-	clk_unprepare(priv->usb_host_ck);
-	clk_put(priv->usb_host_ck);
-	usb_put_hcd(hcd);
-	return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-#ifdef	CONFIG_PM
-
-static int ohci_omap_suspend(struct platform_device *pdev, pm_message_t message)
-{
-	struct usb_hcd *hcd = platform_get_drvdata(pdev);
-	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
-	struct ohci_omap_priv *priv = hcd_to_ohci_omap_priv(hcd);
-	bool do_wakeup = device_may_wakeup(&pdev->dev);
-	int ret;
-
-	if (time_before(jiffies, ohci->next_statechange))
-		msleep(5);
-	ohci->next_statechange = jiffies;
-
-	ret = ohci_suspend(hcd, do_wakeup);
-	if (ret)
-		return ret;
-
-	omap_ohci_clock_power(priv, 0);
-	return ret;
-}
-
-static int ohci_omap_resume(struct platform_device *dev)
-{
-	struct usb_hcd	*hcd = platform_get_drvdata(dev);
-	struct ohci_hcd	*ohci = hcd_to_ohci(hcd);
-	struct ohci_omap_priv *priv = hcd_to_ohci_omap_priv(hcd);
-
-	if (time_before(jiffies, ohci->next_statechange))
-		msleep(5);
-	ohci->next_statechange = jiffies;
-
-	omap_ohci_clock_power(priv, 1);
-	ohci_resume(hcd, false);
-	return 0;
-}
-
-#endif
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * Driver definition to register with the OMAP bus
- */
-static struct platform_driver ohci_hcd_omap_driver = {
-	.probe		= ohci_hcd_omap_probe,
-	.remove		= ohci_hcd_omap_remove,
-	.shutdown	= usb_hcd_platform_shutdown,
-#ifdef	CONFIG_PM
-	.suspend	= ohci_omap_suspend,
-	.resume		= ohci_omap_resume,
-#endif
-	.driver		= {
-		.name	= "ohci",
-	},
-};
-
-static const struct ohci_driver_overrides omap_overrides __initconst = {
-	.product_desc	= "OMAP OHCI",
-	.reset		= ohci_omap_reset,
-	.extra_priv_size = sizeof(struct ohci_omap_priv),
-};
-
-static int __init ohci_omap_init(void)
-{
-	if (usb_disabled())
-		return -ENODEV;
-
-	ohci_init_driver(&ohci_omap_hc_driver, &omap_overrides);
-	return platform_driver_register(&ohci_hcd_omap_driver);
-}
-module_init(ohci_omap_init);
-
-static void __exit ohci_omap_cleanup(void)
-{
-	platform_driver_unregister(&ohci_hcd_omap_driver);
-}
-module_exit(ohci_omap_cleanup);
-
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_ALIAS("platform:ohci");
-MODULE_LICENSE("GPL");
diff --git a/include/linux/omap-dma.h b/include/linux/omap-dma.h
index 6f6c31e3fb93..d47703cc3022 100644
--- a/include/linux/omap-dma.h
+++ b/include/linux/omap-dma.h
@@ -306,34 +306,6 @@ extern int omap_request_dma(int dev_id, const char *dev_name,
 			void (*callback)(int lch, u16 ch_status, void *data),
 			void *data, int *dma_ch);
 extern void omap_free_dma(int ch);
-#if IS_ENABLED(CONFIG_USB_OMAP)
-extern void omap_disable_dma_irq(int ch, u16 irq_bits);
-extern void omap_start_dma(int lch);
-extern void omap_stop_dma(int lch);
-extern void omap_set_dma_transfer_params(int lch, int data_type,
-					 int elem_count, int frame_count,
-					 int sync_mode,
-					 int dma_trigger, int src_or_dst_synch);
-extern void omap_set_dma_channel_mode(int lch, enum omap_dma_channel_mode mode);
-
-extern void omap_set_dma_src_params(int lch, int src_port, int src_amode,
-				    unsigned long src_start,
-				    int src_ei, int src_fi);
-extern void omap_set_dma_src_data_pack(int lch, int enable);
-extern void omap_set_dma_src_burst_mode(int lch,
-					enum omap_dma_burst_mode burst_mode);
-
-extern void omap_set_dma_dest_params(int lch, int dest_port, int dest_amode,
-				     unsigned long dest_start,
-				     int dst_ei, int dst_fi);
-extern void omap_set_dma_dest_data_pack(int lch, int enable);
-extern void omap_set_dma_dest_burst_mode(int lch,
-					 enum omap_dma_burst_mode burst_mode);
-
-extern dma_addr_t omap_get_dma_src_pos(int lch);
-extern dma_addr_t omap_get_dma_dst_pos(int lch);
-extern int omap_get_dma_active_status(int lch);
-#endif
 
 extern int omap_dma_running(void);
 
-- 
2.17.1