usb: Import USB support from libusb

rtemsbsd/sys/dev/usb/usb_otg_transceiver.h

@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2012 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Dornierstr. 4
+ *  82178 Puchheim
+ *  Germany
+ *  <info@embedded-brains.de>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _USB_OTG_TRANSCEIVER_HH_
+#define	_USB_OTG_TRANSCEIVER_HH_
+
+#include <sys/stdint.h>
+
+/* USB OTG transceiver standard registers */
+#define USB_OTG_VENDOR_ID_LOW 0x0
+#define USB_OTG_VENDOR_ID_HIGH 0x1
+#define USB_OTG_PRODUCT_ID_LOW 0x2
+#define USB_OTG_PRODUCT_ID_HIGH 0x3
+#define USB_OTG_CONTROL_1 0x4
+#define USB_OTG_CONTROL_1_SET 0x4
+#define USB_OTG_CONTROL_1_CLEAR 0x5
+#define USB_OTG_CONTROL_2 0x6
+#define USB_OTG_CONTROL_2_SET 0x6
+#define USB_OTG_CONTROL_2_CLEAR 0x7
+#define USB_OTG_CONTROL_3 0x12
+#define USB_OTG_CONTROL_3_SET 0x12
+#define USB_OTG_CONTROL_3_CLEAR 0x13
+#define USB_OTG_INT_SOURCE 0x8
+#define USB_OTG_INT_LATCH 0xa
+#define USB_OTG_INT_LATCH_SET 0xa
+#define USB_OTG_INT_LATCH_CLEAR 0xb
+#define USB_OTG_INT_ENABLE_LOW 0xc
+#define USB_OTG_INT_ENABLE_LOW_SET 0xc
+#define USB_OTG_INT_ENABLE_LOW_CLEAR 0xd
+#define USB_OTG_INT_ENABLE_HIGH 0xe
+#define USB_OTG_INT_ENABLE_HIGH_SET 0xe
+#define USB_OTG_INT_ENABLE_HIGH_CLEAR 0xf
+
+/* ISP130X specific registers */
+#define ISP130X_OTG_STATUS 0x10
+#define ISP130X_VERSION_ID_LOW 0x14
+#define ISP130X_VERSION_ID_HIGH 0x15
+
+/* ISP1302 specific registers */
+#define ISP1302_MISC_CONTROL_SET 0x18
+#define ISP1302_MISC_CONTROL_CLEAR 0x19
+
+/* Product identifiers */
+#define USB_OTG_PRODUCT_ID_ISP1301 0x1301
+#define USB_OTG_PRODUCT_ID_ISP1302 0x1302
+#define USB_OTG_PRODUCT_ID_STOTG04E 0xa0c4
+#define USB_OTG_PRODUCT_ID_MIC2555 0x55b0
+
+struct usb_otg_transceiver {
+	int (*read)(
+		const struct usb_otg_transceiver *self,
+		uint8_t reg_addr,
+		uint8_t *value
+	);
+	int (*write)(
+		const struct usb_otg_transceiver *self,
+		uint8_t reg_addr,
+		uint8_t value
+	);
+	uint16_t vendor_id;
+	uint16_t product_id;
+	uint8_t i2c_addr;
+};
+
+int usb_otg_transceiver_read(
+	const struct usb_otg_transceiver *self,
+	const uint8_t *reg_addrs,
+	uint8_t *values,
+	size_t count
+);
+
+struct usb_otg_transceiver_write_request {
+	uint8_t reg_addr;
+	uint8_t value;
+};
+
+int usb_otg_transceiver_write(
+	const struct usb_otg_transceiver *self,
+	const struct usb_otg_transceiver_write_request *requests,
+	size_t count
+);
+
+int usb_otg_transceiver_init(struct usb_otg_transceiver *self);
+
+int usb_otg_transceiver_dump(const struct usb_otg_transceiver *self);
+
+int usb_otg_transceiver_resume(const struct usb_otg_transceiver *self);
+
+int usb_otg_transceiver_suspend(const struct usb_otg_transceiver *self);
+
+enum usb_otg_transceiver_vbus {
+	USB_OTG_VBUS_NOTHING,
+	USB_OTG_VBUS_POWER_WITH_CHARGE_PUMP = 1 << 5,
+	USB_OTG_VBUS_DISCHARGE_VIA_RESISTOR = 1 << 6,
+	USB_OTG_VBUS_CHARGE_VIA_RESISTOR = 1 << 7
+};
+
+int usb_otg_transceiver_set_vbus(
+	const struct usb_otg_transceiver *self,
+	enum usb_otg_transceiver_vbus vbus
+);
+
+#endif/* _USB_OTG_TRANSCEIVER_HH_ */