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authorAlexander Shishkin <alexander.shishkin@linux.intel.com>2012-05-11 17:25:46 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-05-11 16:49:51 -0700
commite443b333629f82ca0da91a05ca638050943bbedd (patch)
treed8c2cbf06e7faeef2c062b01271f8987cca23459 /drivers/usb/chipidea/udc.h
parentbc25a80d12ea971ddd652717150058989b1ad474 (diff)
usb: chipidea: split the driver code into units
Split the driver into the following parts: * core -- resources, register access, capabilities, etc; * udc -- device controller functionality; * debug -- logging events. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/chipidea/udc.h')
-rw-r--r--drivers/usb/chipidea/udc.h96
1 files changed, 96 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/udc.h b/drivers/usb/chipidea/udc.h
new file mode 100644
index 00000000000..82c9e3e772f
--- /dev/null
+++ b/drivers/usb/chipidea/udc.h
@@ -0,0 +1,96 @@
+/*
+ * udc.h - ChipIdea UDC structures
+ *
+ * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
+ *
+ * Author: David Lopo
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __DRIVERS_USB_CHIPIDEA_UDC_H
+#define __DRIVERS_USB_CHIPIDEA_UDC_H
+
+#include <linux/list.h>
+
+#define CTRL_PAYLOAD_MAX 64
+#define RX 0 /* similar to USB_DIR_OUT but can be used as an index */
+#define TX 1 /* similar to USB_DIR_IN but can be used as an index */
+
+/* DMA layout of transfer descriptors */
+struct ci13xxx_td {
+ /* 0 */
+ u32 next;
+#define TD_TERMINATE BIT(0)
+#define TD_ADDR_MASK (0xFFFFFFEUL << 5)
+ /* 1 */
+ u32 token;
+#define TD_STATUS (0x00FFUL << 0)
+#define TD_STATUS_TR_ERR BIT(3)
+#define TD_STATUS_DT_ERR BIT(5)
+#define TD_STATUS_HALTED BIT(6)
+#define TD_STATUS_ACTIVE BIT(7)
+#define TD_MULTO (0x0003UL << 10)
+#define TD_IOC BIT(15)
+#define TD_TOTAL_BYTES (0x7FFFUL << 16)
+ /* 2 */
+ u32 page[5];
+#define TD_CURR_OFFSET (0x0FFFUL << 0)
+#define TD_FRAME_NUM (0x07FFUL << 0)
+#define TD_RESERVED_MASK (0x0FFFUL << 0)
+} __attribute__ ((packed));
+
+/* DMA layout of queue heads */
+struct ci13xxx_qh {
+ /* 0 */
+ u32 cap;
+#define QH_IOS BIT(15)
+#define QH_MAX_PKT (0x07FFUL << 16)
+#define QH_ZLT BIT(29)
+#define QH_MULT (0x0003UL << 30)
+ /* 1 */
+ u32 curr;
+ /* 2 - 8 */
+ struct ci13xxx_td td;
+ /* 9 */
+ u32 RESERVED;
+ struct usb_ctrlrequest setup;
+} __attribute__ ((packed));
+
+/* Extension of usb_request */
+struct ci13xxx_req {
+ struct usb_request req;
+ unsigned map;
+ struct list_head queue;
+ struct ci13xxx_td *ptr;
+ dma_addr_t dma;
+ struct ci13xxx_td *zptr;
+ dma_addr_t zdma;
+};
+
+#ifdef CONFIG_USB_CHIPIDEA_UDC
+irqreturn_t udc_irq(int irq, void *data);
+int udc_probe(struct ci13xxx_udc_driver *driver, struct device *dev,
+ void __iomem *regs, struct ci13xxx **_udc);
+void udc_remove(struct ci13xxx *udc);
+#else
+static inline irqreturn_t udc_irq(int irq, void *data)
+{
+ return IRQ_NONE;
+}
+
+static inline
+int udc_probe(struct ci13xxx_udc_driver *driver, struct device *dev,
+ void __iomem *regs, struct ci13xxx **_udc)
+{
+ return -ENODEV;
+}
+
+static inline void udc_remove(struct ci13xxx *udc)
+{
+}
+#endif
+
+#endif /* __DRIVERS_USB_CHIPIDEA_UDC_H */