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Subject[PATCH 09/15] Introduce Cadence USBSSP DRD Driver - added debugfs files.
Date
Signed-off-by: Laszczak Pawel <pawell@cadence.com>
---
drivers/usb/usbssp/gadget-debugfs.c | 514 ++++++++++++++++++++++++++++
drivers/usb/usbssp/gadget-debugfs.h | 137 ++++++++
2 files changed, 651 insertions(+)
create mode 100644 drivers/usb/usbssp/gadget-debugfs.c
create mode 100644 drivers/usb/usbssp/gadget-debugfs.h

diff --git a/drivers/usb/usbssp/gadget-debugfs.c b/drivers/usb/usbssp/gadget-debugfs.c
new file mode 100644
index 000000000000..c0d1e96728e6
--- /dev/null
+++ b/drivers/usb/usbssp/gadget-debugfs.c
@@ -0,0 +1,514 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * USBSSP device controller driver
+ *
+ * Copyright (C) 2018 Cadence.
+ *
+ * Author: Pawel Laszczak
+ * Some code borrowed from the Linux XHCI driver.
+ */
+
+#include <linux/slab.h>
+
+#include "gadget.h"
+#include "gadget-debugfs.h"
+
+static const struct debugfs_reg32 usbssp_cap_regs[] = {
+ dump_register(CAPLENGTH),
+ dump_register(HCSPARAMS1),
+ dump_register(HCSPARAMS2),
+ dump_register(HCSPARAMS3),
+ dump_register(HCCPARAMS1),
+ dump_register(DOORBELLOFF),
+ dump_register(RUNTIMEOFF),
+ dump_register(HCCPARAMS2),
+};
+
+static const struct debugfs_reg32 usbssp_op_regs[] = {
+ dump_register(USBCMD),
+ dump_register(USBSTS),
+ dump_register(PAGESIZE),
+ dump_register(DNCTRL),
+ dump_register(CRCR),
+ dump_register(DCBAAP_LOW),
+ dump_register(DCBAAP_HIGH),
+ dump_register(CONFIG),
+};
+
+static const struct debugfs_reg32 usbssp_runtime_regs[] = {
+ dump_register(MFINDEX),
+ dump_register(IR0_IMAN),
+ dump_register(IR0_IMOD),
+ dump_register(IR0_ERSTSZ),
+ dump_register(IR0_ERSTBA_LOW),
+ dump_register(IR0_ERSTBA_HIGH),
+ dump_register(IR0_ERDP_LOW),
+ dump_register(IR0_ERDP_HIGH),
+};
+
+static const struct debugfs_reg32 usbssp_extcap_legsup[] = {
+ dump_register(EXTCAP_USBLEGSUP),
+ dump_register(EXTCAP_USBLEGCTLSTS),
+};
+
+static const struct debugfs_reg32 usbssp_extcap_protocol[] = {
+ dump_register(EXTCAP_REVISION),
+ dump_register(EXTCAP_NAME),
+ dump_register(EXTCAP_PORTINFO),
+ dump_register(EXTCAP_PORTTYPE),
+ dump_register(EXTCAP_MANTISSA1),
+ dump_register(EXTCAP_MANTISSA2),
+ dump_register(EXTCAP_MANTISSA3),
+ dump_register(EXTCAP_MANTISSA4),
+ dump_register(EXTCAP_MANTISSA5),
+ dump_register(EXTCAP_MANTISSA6),
+};
+
+static const struct debugfs_reg32 usbssp_extcap_dbc[] = {
+ dump_register(EXTCAP_DBC_CAPABILITY),
+ dump_register(EXTCAP_DBC_DOORBELL),
+ dump_register(EXTCAP_DBC_ERSTSIZE),
+ dump_register(EXTCAP_DBC_ERST_LOW),
+ dump_register(EXTCAP_DBC_ERST_HIGH),
+ dump_register(EXTCAP_DBC_ERDP_LOW),
+ dump_register(EXTCAP_DBC_ERDP_HIGH),
+ dump_register(EXTCAP_DBC_CONTROL),
+ dump_register(EXTCAP_DBC_STATUS),
+ dump_register(EXTCAP_DBC_PORTSC),
+ dump_register(EXTCAP_DBC_CONT_LOW),
+ dump_register(EXTCAP_DBC_CONT_HIGH),
+ dump_register(EXTCAP_DBC_DEVINFO1),
+ dump_register(EXTCAP_DBC_DEVINFO2),
+};
+
+static struct dentry *usbssp_debugfs_root;
+
+static struct usbssp_regset *usbssp_debugfs_alloc_regset(
+ struct usbssp_udc *usbssp_data)
+{
+ struct usbssp_regset *regset;
+
+ regset = kzalloc(sizeof(*regset), GFP_KERNEL);
+ if (!regset)
+ return NULL;
+
+ /*
+ * The allocation and free of regset are executed in order.
+ * We needn't a lock here.
+ */
+ INIT_LIST_HEAD(&regset->list);
+ list_add_tail(&regset->list, &usbssp_data->regset_list);
+
+ return regset;
+}
+
+static void usbssp_debugfs_free_regset(struct usbssp_regset *regset)
+{
+ if (!regset)
+ return;
+
+ list_del(&regset->list);
+ kfree(regset);
+}
+
+static void usbssp_debugfs_regset(struct usbssp_udc *usbssp_data, u32 base,
+ const struct debugfs_reg32 *regs,
+ size_t nregs, struct dentry *parent,
+ const char *fmt, ...)
+{
+ struct usbssp_regset *rgs;
+ va_list args;
+ struct debugfs_regset32 *regset;
+
+ rgs = usbssp_debugfs_alloc_regset(usbssp_data);
+ if (!rgs)
+ return;
+
+ va_start(args, fmt);
+ vsnprintf(rgs->name, sizeof(rgs->name), fmt, args);
+ va_end(args);
+
+ regset = &rgs->regset;
+ regset->regs = regs;
+ regset->nregs = nregs;
+ regset->base = usbssp_data->regs + base;
+
+ debugfs_create_regset32((const char *)rgs->name, 0444, parent, regset);
+}
+
+static void usbssp_debugfs_extcap_regset(struct usbssp_udc *usbssp_data,
+ int cap_id,
+ const struct debugfs_reg32 *regs,
+ size_t n, const char *cap_name)
+{
+ u32 offset;
+ int index = 0;
+ size_t psic, nregs = n;
+ void __iomem *base = &usbssp_data->cap_regs->hc_capbase;
+
+ offset = usbssp_find_next_ext_cap(base, 0, cap_id);
+ while (offset) {
+ if (cap_id == USBSSP_EXT_CAPS_PROTOCOL) {
+ psic = USBSSP_EXT_PORT_PSIC(readl(base + offset + 8));
+ nregs = min(4 + psic, n);
+ }
+
+ usbssp_debugfs_regset(usbssp_data, offset, regs, nregs,
+ usbssp_data->debugfs_root, "%s:%02d",
+ cap_name, index);
+ offset = usbssp_find_next_ext_cap(base, offset, cap_id);
+ index++;
+ }
+}
+
+static int usbssp_ring_enqueue_show(struct seq_file *s, void *unused)
+{
+ dma_addr_t dma;
+ struct usbssp_ring *ring = *(struct usbssp_ring **)s->private;
+
+ dma = usbssp_trb_virt_to_dma(ring->enq_seg, ring->enqueue);
+ seq_printf(s, "%pad\n", &dma);
+
+ return 0;
+}
+
+static int usbssp_ring_dequeue_show(struct seq_file *s, void *unused)
+{
+ dma_addr_t dma;
+ struct usbssp_ring *ring = *(struct usbssp_ring **)s->private;
+
+ dma = usbssp_trb_virt_to_dma(ring->deq_seg, ring->dequeue);
+ seq_printf(s, "%pad\n", &dma);
+
+ return 0;
+}
+
+static int usbssp_ring_cycle_show(struct seq_file *s, void *unused)
+{
+ struct usbssp_ring *ring = *(struct usbssp_ring **)s->private;
+
+ seq_printf(s, "%d\n", ring->cycle_state);
+
+ return 0;
+}
+
+static void usbssp_ring_dump_segment(struct seq_file *s,
+ struct usbssp_segment *seg)
+{
+ int i;
+ dma_addr_t dma;
+ union usbssp_trb *trb;
+
+ for (i = 0; i < TRBS_PER_SEGMENT; i++) {
+ trb = &seg->trbs[i];
+ dma = seg->dma + i * sizeof(*trb);
+ seq_printf(s, "%pad: %s\n", &dma,
+ usbssp_decode_trb(trb->generic.field[0],
+ trb->generic.field[1],
+ trb->generic.field[2],
+ trb->generic.field[3]));
+ }
+}
+
+static int usbssp_ring_trb_show(struct seq_file *s, void *unused)
+{
+ int i;
+ struct usbssp_ring *ring = *(struct usbssp_ring **)s->private;
+ struct usbssp_segment *seg = ring->first_seg;
+
+ for (i = 0; i < ring->num_segs; i++) {
+ usbssp_ring_dump_segment(s, seg);
+ seg = seg->next;
+ }
+
+ return 0;
+}
+
+static struct usbssp_file_map ring_files[] = {
+ {"enqueue", usbssp_ring_enqueue_show, },
+ {"dequeue", usbssp_ring_dequeue_show, },
+ {"cycle", usbssp_ring_cycle_show, },
+ {"trbs", usbssp_ring_trb_show, },
+};
+
+static int usbssp_ring_open(struct inode *inode, struct file *file)
+{
+ int i;
+ struct usbssp_file_map *f_map;
+ const char *file_name = file_dentry(file)->d_iname;
+
+ for (i = 0; i < ARRAY_SIZE(ring_files); i++) {
+ f_map = &ring_files[i];
+
+ if (strcmp(f_map->name, file_name) == 0)
+ break;
+ }
+
+ return single_open(file, f_map->show, inode->i_private);
+ return 0;
+}
+
+static const struct file_operations usbssp_ring_fops = {
+ .open = usbssp_ring_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int usbssp_slot_context_show(struct seq_file *s, void *unused)
+{
+ struct usbssp_udc *usbssp_data;
+ struct usbssp_slot_ctx *slot_ctx;
+ struct usbssp_slot_priv *priv = s->private;
+ struct usbssp_device *dev = priv->dev;
+
+ usbssp_data = gadget_to_usbssp(dev->gadget);
+ slot_ctx = usbssp_get_slot_ctx(usbssp_data, dev->out_ctx);
+ seq_printf(s, "%pad: %s\n", &dev->out_ctx->dma,
+ usbssp_decode_slot_context(slot_ctx->dev_info,
+ slot_ctx->dev_info2, slot_ctx->int_target,
+ slot_ctx->dev_state));
+
+ return 0;
+}
+
+static int usbssp_endpoint_context_show(struct seq_file *s, void *unused)
+{
+ int dci;
+ dma_addr_t dma;
+ struct usbssp_udc *usbssp_data;
+ struct usbssp_ep_ctx *ep_ctx;
+ struct usbssp_slot_priv *priv = s->private;
+ struct usbssp_device *dev = priv->dev;
+
+ usbssp_data = gadget_to_usbssp(dev->gadget);
+
+ for (dci = 1; dci < 32; dci++) {
+ ep_ctx = usbssp_get_ep_ctx(usbssp_data, dev->out_ctx, dci);
+ dma = dev->out_ctx->dma +
+ dci * CTX_SIZE(usbssp_data->hcc_params);
+ seq_printf(s, "%pad: %s\n", &dma,
+ usbssp_decode_ep_context(ep_ctx->ep_info,
+ ep_ctx->ep_info2, ep_ctx->deq,
+ ep_ctx->tx_info));
+ }
+
+ return 0;
+}
+
+static int usbssp_device_name_show(struct seq_file *s, void *unused)
+{
+ struct usbssp_slot_priv *priv = s->private;
+ struct usbssp_device *dev = priv->dev;
+
+ seq_printf(s, "%s\n", dev_name(&dev->gadget->dev));
+
+ return 0;
+}
+
+static struct usbssp_file_map context_files[] = {
+ {"name", usbssp_device_name_show, },
+ {"slot-context", usbssp_slot_context_show, },
+ {"ep-context", usbssp_endpoint_context_show, },
+};
+
+static int usbssp_context_open(struct inode *inode, struct file *file)
+{
+ int i;
+ struct usbssp_file_map *f_map;
+ const char *file_name = file_dentry(file)->d_iname;
+
+ for (i = 0; i < ARRAY_SIZE(context_files); i++) {
+ f_map = &context_files[i];
+
+ if (strcmp(f_map->name, file_name) == 0)
+ break;
+ }
+
+ return single_open(file, f_map->show, inode->i_private);
+}
+
+static const struct file_operations usbssp_context_fops = {
+ .open = usbssp_context_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static void usbssp_debugfs_create_files(struct usbssp_udc *usbssp_data,
+ struct usbssp_file_map *files,
+ size_t nentries, void *data,
+ struct dentry *parent,
+ const struct file_operations *fops)
+{
+ int i;
+
+ for (i = 0; i < nentries; i++)
+ debugfs_create_file(files[i].name, 0444, parent, data, fops);
+}
+
+static struct dentry *usbssp_debugfs_create_ring_dir(struct usbssp_udc
+ *usbssp_data,
+ struct usbssp_ring **ring,
+ const char *name,
+ struct dentry *parent)
+{
+ struct dentry *dir;
+
+ dir = debugfs_create_dir(name, parent);
+ usbssp_debugfs_create_files(usbssp_data, ring_files,
+ ARRAY_SIZE(ring_files), ring, dir, &usbssp_ring_fops);
+
+ return dir;
+}
+
+static void usbssp_debugfs_create_context_files(struct usbssp_udc *usbssp_data,
+ struct dentry *parent,
+ int slot_id)
+{
+ struct usbssp_device *dev = &usbssp_data->devs;
+
+ usbssp_debugfs_create_files(usbssp_data, context_files,
+ ARRAY_SIZE(context_files), dev->debugfs_private,
+ parent, &usbssp_context_fops);
+}
+
+void usbssp_debugfs_create_endpoint(struct usbssp_udc *usbssp_data,
+ struct usbssp_device *dev,
+ int ep_index)
+{
+ struct usbssp_ep_priv *epriv;
+ struct usbssp_slot_priv *spriv = dev->debugfs_private;
+
+ if (spriv->eps[ep_index])
+ return;
+
+ epriv = kzalloc(sizeof(*epriv), GFP_KERNEL);
+ if (!epriv)
+ return;
+
+ snprintf(epriv->name, sizeof(epriv->name), "ep%02d", ep_index);
+ epriv->root = usbssp_debugfs_create_ring_dir(usbssp_data,
+ &dev->eps[ep_index].ring, epriv->name,
+ spriv->root);
+ spriv->eps[ep_index] = epriv;
+}
+
+void usbssp_debugfs_remove_endpoint(struct usbssp_udc *usbssp_data,
+ struct usbssp_device *dev,
+ int ep_index)
+{
+ struct usbssp_ep_priv *epriv;
+ struct usbssp_slot_priv *spriv = dev->debugfs_private;
+
+ if (!spriv || !spriv->eps[ep_index])
+ return;
+
+ epriv = spriv->eps[ep_index];
+ debugfs_remove_recursive(epriv->root);
+ spriv->eps[ep_index] = NULL;
+ kfree(epriv);
+}
+
+void usbssp_debugfs_create_slot(struct usbssp_udc *usbssp_data, int slot_id)
+{
+ struct usbssp_slot_priv *priv;
+ struct usbssp_device *dev = &usbssp_data->devs;
+
+ priv = kzalloc(sizeof(*priv), GFP_ATOMIC);
+ if (!priv)
+ return;
+
+ snprintf(priv->name, sizeof(priv->name), "%02d", slot_id);
+ priv->root = debugfs_create_dir(priv->name, usbssp_data->debugfs_slots);
+ priv->dev = dev;
+ dev->debugfs_private = priv;
+
+ usbssp_debugfs_create_ring_dir(usbssp_data, &dev->eps[0].ring,
+ "ep00", priv->root);
+
+ usbssp_debugfs_create_context_files(usbssp_data, priv->root, slot_id);
+}
+
+void usbssp_debugfs_remove_slot(struct usbssp_udc *usbssp_data, int slot_id)
+{
+ int i;
+ struct usbssp_slot_priv *priv;
+ struct usbssp_device *dev = &usbssp_data->devs;
+
+ if (!dev || !dev->debugfs_private)
+ return;
+
+ priv = dev->debugfs_private;
+
+ debugfs_remove_recursive(priv->root);
+
+ for (i = 0; i < 31; i++)
+ kfree(priv->eps[i]);
+
+ kfree(priv);
+ dev->debugfs_private = NULL;
+}
+
+void usbssp_debugfs_init(struct usbssp_udc *usbssp_data)
+{
+ struct device *dev = usbssp_data->dev;
+
+ usbssp_data->debugfs_root = debugfs_create_dir(dev_name(dev),
+ usbssp_debugfs_root);
+
+ INIT_LIST_HEAD(&usbssp_data->regset_list);
+
+ usbssp_debugfs_regset(usbssp_data,
+ 0, usbssp_cap_regs, ARRAY_SIZE(usbssp_cap_regs),
+ usbssp_data->debugfs_root, "reg-cap");
+
+ usbssp_debugfs_regset(usbssp_data,
+ HC_LENGTH(readl(&usbssp_data->cap_regs->hc_capbase)),
+ usbssp_op_regs, ARRAY_SIZE(usbssp_op_regs),
+ usbssp_data->debugfs_root, "reg-op");
+
+ usbssp_debugfs_regset(usbssp_data,
+ readl(&usbssp_data->cap_regs->run_regs_off) & RTSOFF_MASK,
+ usbssp_runtime_regs, ARRAY_SIZE(usbssp_runtime_regs),
+ usbssp_data->debugfs_root, "reg-runtime");
+
+ usbssp_debugfs_extcap_regset(usbssp_data, USBSSP_EXT_CAPS_PROTOCOL,
+ usbssp_extcap_protocol,
+ ARRAY_SIZE(usbssp_extcap_protocol),
+ "reg-ext-protocol");
+
+ usbssp_debugfs_create_ring_dir(usbssp_data, &usbssp_data->cmd_ring,
+ "command-ring",
+ usbssp_data->debugfs_root);
+
+ usbssp_debugfs_create_ring_dir(usbssp_data, &usbssp_data->event_ring,
+ "event-ring",
+ usbssp_data->debugfs_root);
+
+ usbssp_data->debugfs_slots = debugfs_create_dir("devices",
+ usbssp_data->debugfs_root);
+}
+
+void usbssp_debugfs_exit(struct usbssp_udc *usbssp_data)
+{
+ struct usbssp_regset *rgs, *tmp;
+
+ debugfs_remove_recursive(usbssp_data->debugfs_root);
+ usbssp_data->debugfs_root = NULL;
+ usbssp_data->debugfs_slots = NULL;
+
+ list_for_each_entry_safe(rgs, tmp, &usbssp_data->regset_list, list)
+ usbssp_debugfs_free_regset(rgs);
+}
+
+void __init usbssp_debugfs_create_root(void)
+{
+ usbssp_debugfs_root = debugfs_create_dir("usbssp", usb_debug_root);
+}
+
+void __exit usbssp_debugfs_remove_root(void)
+{
+ debugfs_remove_recursive(usbssp_debugfs_root);
+ usbssp_debugfs_root = NULL;
+}
diff --git a/drivers/usb/usbssp/gadget-debugfs.h b/drivers/usb/usbssp/gadget-debugfs.h
new file mode 100644
index 000000000000..53adb028e7f2
--- /dev/null
+++ b/drivers/usb/usbssp/gadget-debugfs.h
@@ -0,0 +1,137 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * USBSSP device controller driver
+ *
+ * Copyright (C) 2018 Cadence.
+ *
+ * Author: Pawel Laszczak
+ * Some code borrowed from the Linux XHCI driver.
+ */
+
+#ifndef __LINUX_USBSSP_DEBUGFS_H
+#define __LINUX_USBSSP_DEBUGFS_H
+
+#include <linux/debugfs.h>
+
+#define DEBUGFS_NAMELEN 32
+
+#define REG_CAPLENGTH 0x00
+#define REG_HCSPARAMS1 0x04
+#define REG_HCSPARAMS2 0x08
+#define REG_HCSPARAMS3 0x0c
+#define REG_HCCPARAMS1 0x10
+#define REG_DOORBELLOFF 0x14
+#define REG_RUNTIMEOFF 0x18
+#define REG_HCCPARAMS2 0x1c
+
+#define REG_USBCMD 0x00
+#define REG_USBSTS 0x04
+#define REG_PAGESIZE 0x08
+#define REG_DNCTRL 0x14
+#define REG_CRCR 0x18
+#define REG_DCBAAP_LOW 0x30
+#define REG_DCBAAP_HIGH 0x34
+#define REG_CONFIG 0x38
+
+#define REG_MFINDEX 0x00
+#define REG_IR0_IMAN 0x20
+#define REG_IR0_IMOD 0x24
+#define REG_IR0_ERSTSZ 0x28
+#define REG_IR0_ERSTBA_LOW 0x30
+#define REG_IR0_ERSTBA_HIGH 0x34
+#define REG_IR0_ERDP_LOW 0x38
+#define REG_IR0_ERDP_HIGH 0x3c
+
+#define REG_EXTCAP_USBLEGSUP 0x00
+#define REG_EXTCAP_USBLEGCTLSTS 0x04
+
+#define REG_EXTCAP_REVISION 0x00
+#define REG_EXTCAP_NAME 0x04
+#define REG_EXTCAP_PORTINFO 0x08
+#define REG_EXTCAP_PORTTYPE 0x0c
+#define REG_EXTCAP_MANTISSA1 0x10
+#define REG_EXTCAP_MANTISSA2 0x14
+#define REG_EXTCAP_MANTISSA3 0x18
+#define REG_EXTCAP_MANTISSA4 0x1c
+#define REG_EXTCAP_MANTISSA5 0x20
+#define REG_EXTCAP_MANTISSA6 0x24
+
+#define REG_EXTCAP_DBC_CAPABILITY 0x00
+#define REG_EXTCAP_DBC_DOORBELL 0x04
+#define REG_EXTCAP_DBC_ERSTSIZE 0x08
+#define REG_EXTCAP_DBC_ERST_LOW 0x10
+#define REG_EXTCAP_DBC_ERST_HIGH 0x14
+#define REG_EXTCAP_DBC_ERDP_LOW 0x18
+#define REG_EXTCAP_DBC_ERDP_HIGH 0x1c
+#define REG_EXTCAP_DBC_CONTROL 0x20
+#define REG_EXTCAP_DBC_STATUS 0x24
+#define REG_EXTCAP_DBC_PORTSC 0x28
+#define REG_EXTCAP_DBC_CONT_LOW 0x30
+#define REG_EXTCAP_DBC_CONT_HIGH 0x34
+#define REG_EXTCAP_DBC_DEVINFO1 0x38
+#define REG_EXTCAP_DBC_DEVINFO2 0x3c
+
+#define dump_register(nm) \
+{ \
+ .name = __stringify(nm), \
+ .offset = REG_ ##nm, \
+}
+
+struct usbssp_regset {
+ char name[DEBUGFS_NAMELEN];
+ struct debugfs_regset32 regset;
+ size_t nregs;
+ struct dentry *parent;
+ struct list_head list;
+};
+
+struct usbssp_file_map {
+ const char *name;
+ int (*show)(struct seq_file *s, void *unused);
+};
+
+struct usbssp_ep_priv {
+ char name[DEBUGFS_NAMELEN];
+ struct dentry *root;
+};
+
+struct usbssp_slot_priv {
+ char name[DEBUGFS_NAMELEN];
+ struct dentry *root;
+ struct usbssp_ep_priv *eps[31];
+ struct usbssp_device *dev;
+};
+
+#ifdef CONFIG_DEBUG_FS
+void usbssp_debugfs_init(struct usbssp_udc *usbssp_data);
+void usbssp_debugfs_exit(struct usbssp_udc *usbssp_data);
+void __init usbssp_debugfs_create_root(void);
+void __exit usbssp_debugfs_remove_root(void);
+void usbssp_debugfs_create_slot(struct usbssp_udc *usbssp_data, int slot_id);
+void usbssp_debugfs_remove_slot(struct usbssp_udc *usbssp_data, int slot_id);
+void usbssp_debugfs_create_endpoint(struct usbssp_udc *usbssp_data,
+ struct usbssp_device *dev_priv,
+ int ep_index);
+void usbssp_debugfs_remove_endpoint(struct usbssp_udc *usbssp_data,
+ struct usbssp_device *dev_priv,
+ int ep_index);
+#else
+static inline void usbssp_debugfs_init(struct usbssp_udc *usbssp_data) { }
+static inline void usbssp_debugfs_exit(struct usbssp_udc *usbssp_data) { }
+static inline void __init usbssp_debugfs_create_root(void) { }
+static inline void __exit usbssp_debugfs_remove_root(void) { }
+static inline void usbssp_debugfs_create_slot(struct usbssp_udc *usbssp_data,
+ int s) { }
+static inline void usbssp_debugfs_remove_slot(struct usbssp_udc *xusbssp_data,
+ int s) { }
+static inline void
+usbssp_debugfs_create_endpoint(struct usbssp_udc *usbssp_data,
+ struct usbssp_device *dev_priv,
+ int ep_index) { }
+static inline void
+usbssp_debugfs_remove_endpoint(struct usbssp_udc *usbssp_data,
+ struct usbssp_device *dev_priv,
+ int ep_index) { }
+#endif /* CONFIG_DEBUG_FS */
+#endif /*__LINUX_USBSSP_DEBUGFS_H*/
--
2.17.1
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