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-rw-r--r--drivers/usb/isp1760/isp1760-udc.h108
1 files changed, 108 insertions, 0 deletions
diff --git a/drivers/usb/isp1760/isp1760-udc.h b/drivers/usb/isp1760/isp1760-udc.h
new file mode 100644
index 000000000..22044e86b
--- /dev/null
+++ b/drivers/usb/isp1760/isp1760-udc.h
@@ -0,0 +1,108 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Driver for the NXP ISP1761 device controller
+ *
+ * Copyright 2021 Linaro, Rui Miguel Silva
+ * Copyright 2014 Ideas on Board Oy
+ *
+ * Contacts:
+ * Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ * Rui Miguel Silva <rui.silva@linaro.org>
+ */
+
+#ifndef _ISP1760_UDC_H_
+#define _ISP1760_UDC_H_
+
+#include <linux/ioport.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/timer.h>
+#include <linux/usb/gadget.h>
+
+#include "isp1760-regs.h"
+
+struct isp1760_device;
+struct isp1760_udc;
+
+enum isp1760_ctrl_state {
+ ISP1760_CTRL_SETUP, /* Waiting for a SETUP transaction */
+ ISP1760_CTRL_DATA_IN, /* Setup received, data IN stage */
+ ISP1760_CTRL_DATA_OUT, /* Setup received, data OUT stage */
+ ISP1760_CTRL_STATUS, /* 0-length request in status stage */
+};
+
+struct isp1760_ep {
+ struct isp1760_udc *udc;
+ struct usb_ep ep;
+
+ struct list_head queue;
+
+ unsigned int addr;
+ unsigned int maxpacket;
+ char name[7];
+
+ const struct usb_endpoint_descriptor *desc;
+
+ bool rx_pending;
+ bool halted;
+ bool wedged;
+};
+
+/**
+ * struct isp1760_udc - UDC state information
+ * irq: IRQ number
+ * irqname: IRQ name (as passed to request_irq)
+ * regs: regmap for UDC registers
+ * driver: Gadget driver
+ * gadget: Gadget device
+ * lock: Protects driver, vbus_timer, ep, ep0_*, DC_EPINDEX register
+ * ep: Array of endpoints
+ * ep0_state: Control request state for endpoint 0
+ * ep0_dir: Direction of the current control request
+ * ep0_length: Length of the current control request
+ * connected: Tracks gadget driver bus connection state
+ */
+struct isp1760_udc {
+ struct isp1760_device *isp;
+
+ int irq;
+ char *irqname;
+
+ struct regmap *regs;
+ struct regmap_field *fields[DC_FIELD_MAX];
+
+ struct usb_gadget_driver *driver;
+ struct usb_gadget gadget;
+
+ spinlock_t lock;
+ struct timer_list vbus_timer;
+
+ struct isp1760_ep ep[15];
+
+ enum isp1760_ctrl_state ep0_state;
+ u8 ep0_dir;
+ u16 ep0_length;
+
+ bool connected;
+ bool is_isp1763;
+
+ unsigned int devstatus;
+};
+
+#ifdef CONFIG_USB_ISP1761_UDC
+int isp1760_udc_register(struct isp1760_device *isp, int irq,
+ unsigned long irqflags);
+void isp1760_udc_unregister(struct isp1760_device *isp);
+#else
+static inline int isp1760_udc_register(struct isp1760_device *isp, int irq,
+ unsigned long irqflags)
+{
+ return 0;
+}
+
+static inline void isp1760_udc_unregister(struct isp1760_device *isp)
+{
+}
+#endif
+
+#endif