1 files changed, 488 insertions, 0 deletions

diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
new file mode 100644
index 000000000000..82227251931b
--- /dev/null
+++ b/drivers/usb/musb/musb_core.h
@@ -0,0 +1,488 @@
+/*
+ * MUSB OTG driver defines
+ *
+ * Copyright 2005 Mentor Graphics Corporation
+ * Copyright (C) 2005-2006 by Texas Instruments
+ * Copyright (C) 2006-2007 Nokia Corporation
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ * THIS SOFTWARE IS PROVIDED "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 AUTHORS 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 __MUSB_CORE_H__
+#define __MUSB_CORE_H__
+
+#include <linux/slab.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/smp_lock.h>
+#include <linux/errno.h>
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+#include <linux/usb.h>
+#include <linux/usb/otg.h>
+#include <linux/usb/musb.h>
+
+struct musb;
+struct musb_hw_ep;
+struct musb_ep;
+
+
+#include "musb_debug.h"
+#include "musb_dma.h"
+
+#include "musb_io.h"
+#include "musb_regs.h"
+
+#include "musb_gadget.h"
+#include "../core/hcd.h"
+#include "musb_host.h"
+
+
+
+#ifdef CONFIG_USB_MUSB_OTG
+
+#define is_peripheral_enabled(musb)     ((musb)->board_mode != MUSB_HOST)
+#define is_host_enabled(musb)           ((musb)->board_mode != MUSB_PERIPHERAL)
+#define is_otg_enabled(musb)            ((musb)->board_mode == MUSB_OTG)
+
+/* NOTE:  otg and peripheral-only state machines start at B_IDLE.
+ * OTG or host-only go to A_IDLE when ID is sensed.
+ */
+#define is_peripheral_active(m)         (!(m)->is_host)
+#define is_host_active(m)               ((m)->is_host)
+
+#else
+#define is_peripheral_enabled(musb)     is_peripheral_capable()
+#define is_host_enabled(musb)           is_host_capable()
+#define is_otg_enabled(musb)            0
+
+#define is_peripheral_active(musb)      is_peripheral_capable()
+#define is_host_active(musb)            is_host_capable()
+#endif
+
+#if defined(CONFIG_USB_MUSB_OTG) || defined(CONFIG_USB_MUSB_PERIPHERAL)
+/* for some reason, the "select USB_GADGET_MUSB_HDRC" doesn't always
+ * override that choice selection (often USB_GADGET_DUMMY_HCD).
+ */
+#ifndef CONFIG_USB_GADGET_MUSB_HDRC
+#error bogus Kconfig output ... select CONFIG_USB_GADGET_MUSB_HDRC
+#endif
+#endif  /* need MUSB gadget selection */
+
+
+#ifdef CONFIG_PROC_FS
+#include <linux/fs.h>
+#define MUSB_CONFIG_PROC_FS
+#endif
+
+/****************************** PERIPHERAL ROLE *****************************/
+
+#ifdef CONFIG_USB_GADGET_MUSB_HDRC
+
+#define is_peripheral_capable() (1)
+
+extern irqreturn_t musb_g_ep0_irq(struct musb *);
+extern void musb_g_tx(struct musb *, u8);
+extern void musb_g_rx(struct musb *, u8);
+extern void musb_g_reset(struct musb *);
+extern void musb_g_suspend(struct musb *);
+extern void musb_g_resume(struct musb *);
+extern void musb_g_wakeup(struct musb *);
+extern void musb_g_disconnect(struct musb *);
+
+#else
+
+#define is_peripheral_capable() (0)
+
+static inline irqreturn_t musb_g_ep0_irq(struct musb *m) { return IRQ_NONE; }
+static inline void musb_g_reset(struct musb *m) {}
+static inline void musb_g_suspend(struct musb *m) {}
+static inline void musb_g_resume(struct musb *m) {}
+static inline void musb_g_wakeup(struct musb *m) {}
+static inline void musb_g_disconnect(struct musb *m) {}
+
+#endif
+
+/****************************** HOST ROLE ***********************************/
+
+#ifdef CONFIG_USB_MUSB_HDRC_HCD
+
+#define is_host_capable()       (1)
+
+extern irqreturn_t musb_h_ep0_irq(struct musb *);
+extern void musb_host_tx(struct musb *, u8);
+extern void musb_host_rx(struct musb *, u8);
+
+#else
+
+#define is_host_capable()       (0)
+
+static inline irqreturn_t musb_h_ep0_irq(struct musb *m) { return IRQ_NONE; }
+static inline void musb_host_tx(struct musb *m, u8 e) {}
+static inline void musb_host_rx(struct musb *m, u8 e) {}
+
+#endif
+
+
+/****************************** CONSTANTS ********************************/
+
+#ifndef MUSB_C_NUM_EPS
+#define MUSB_C_NUM_EPS ((u8)16)
+#endif
+
+#ifndef MUSB_MAX_END0_PACKET
+#define MUSB_MAX_END0_PACKET ((u16)MUSB_EP0_FIFOSIZE)
+#endif
+
+/* host side ep0 states */
+enum musb_h_ep0_state {
+        MUSB_EP0_IDLE,
+        MUSB_EP0_START,                 /* expect ack of setup */
+        MUSB_EP0_IN,                    /* expect IN DATA */
+        MUSB_EP0_OUT,                   /* expect ack of OUT DATA */
+        MUSB_EP0_STATUS,                /* expect ack of STATUS */
+} __attribute__ ((packed));
+
+/* peripheral side ep0 states */
+enum musb_g_ep0_state {
+        MUSB_EP0_STAGE_SETUP,           /* idle, waiting for setup */
+        MUSB_EP0_STAGE_TX,              /* IN data */
+        MUSB_EP0_STAGE_RX,              /* OUT data */
+        MUSB_EP0_STAGE_STATUSIN,        /* (after OUT data) */
+        MUSB_EP0_STAGE_STATUSOUT,       /* (after IN data) */
+        MUSB_EP0_STAGE_ACKWAIT,         /* after zlp, before statusin */
+} __attribute__ ((packed));
+
+/* OTG protocol constants */
+#define OTG_TIME_A_WAIT_VRISE   100             /* msec (max) */
+#define OTG_TIME_A_WAIT_BCON    0               /* 0=infinite; min 1000 msec */
+#define OTG_TIME_A_IDLE_BDIS    200             /* msec (min) */
+
+/*************************** REGISTER ACCESS ********************************/
+
+/* Endpoint registers (other than dynfifo setup) can be accessed either
+ * directly with the "flat" model, or after setting up an index register.
+ */
+
+#if defined(CONFIG_ARCH_DAVINCI) || defined(CONFIG_ARCH_OMAP2430) \
+                || defined(CONFIG_ARCH_OMAP3430)
+/* REVISIT indexed access seemed to
+ * misbehave (on DaVinci) for at least peripheral IN ...
+ */
+#define MUSB_FLAT_REG
+#endif
+
+/* TUSB mapping: "flat" plus ep0 special cases */
+#if     defined(CONFIG_USB_TUSB6010)
+#define musb_ep_select(_mbase, _epnum) \
+        musb_writeb((_mbase), MUSB_INDEX, (_epnum))
+#define MUSB_EP_OFFSET                  MUSB_TUSB_OFFSET
+
+/* "flat" mapping: each endpoint has its own i/o address */
+#elif   defined(MUSB_FLAT_REG)
+#define musb_ep_select(_mbase, _epnum)  (((void)(_mbase)), ((void)(_epnum)))
+#define MUSB_EP_OFFSET                  MUSB_FLAT_OFFSET
+
+/* "indexed" mapping: INDEX register controls register bank select */
+#else
+#define musb_ep_select(_mbase, _epnum) \
+        musb_writeb((_mbase), MUSB_INDEX, (_epnum))
+#define MUSB_EP_OFFSET                  MUSB_INDEXED_OFFSET
+#endif
+
+/****************************** FUNCTIONS ********************************/
+
+#define MUSB_HST_MODE(_musb)\
+        { (_musb)->is_host = true; }
+#define MUSB_DEV_MODE(_musb) \
+        { (_musb)->is_host = false; }
+
+#define test_devctl_hst_mode(_x) \
+        (musb_readb((_x)->mregs, MUSB_DEVCTL)&MUSB_DEVCTL_HM)
+
+#define MUSB_MODE(musb) ((musb)->is_host ? "Host" : "Peripheral")
+
+/******************************** TYPES *************************************/
+
+/*
+ * struct musb_hw_ep - endpoint hardware (bidirectional)
+ *
+ * Ordered slightly for better cacheline locality.
+ */
+struct musb_hw_ep {
+        struct musb             *musb;
+        void __iomem            *fifo;
+        void __iomem            *regs;
+
+#ifdef CONFIG_USB_TUSB6010
+        void __iomem            *conf;
+#endif
+
+        /* index in musb->endpoints[]  */
+        u8                      epnum;
+
+        /* hardware configuration, possibly dynamic */
+        bool                    is_shared_fifo;
+        bool                    tx_double_buffered;
+        bool                    rx_double_buffered;
+        u16                     max_packet_sz_tx;
+        u16                     max_packet_sz_rx;
+
+        struct dma_channel      *tx_channel;
+        struct dma_channel      *rx_channel;
+
+#ifdef CONFIG_USB_TUSB6010
+        /* TUSB has "asynchronous" and "synchronous" dma modes */
+        dma_addr_t              fifo_async;
+        dma_addr_t              fifo_sync;
+        void __iomem            *fifo_sync_va;
+#endif
+
+#ifdef CONFIG_USB_MUSB_HDRC_HCD
+        void __iomem            *target_regs;
+
+        /* currently scheduled peripheral endpoint */
+        struct musb_qh          *in_qh;
+        struct musb_qh          *out_qh;
+
+        u8                      rx_reinit;
+        u8                      tx_reinit;
+#endif
+
+#ifdef CONFIG_USB_GADGET_MUSB_HDRC
+        /* peripheral side */
+        struct musb_ep          ep_in;                  /* TX */
+        struct musb_ep          ep_out;                 /* RX */
+#endif
+};
+
+static inline struct usb_request *next_in_request(struct musb_hw_ep *hw_ep)
+{
+#ifdef CONFIG_USB_GADGET_MUSB_HDRC
+        return next_request(&hw_ep->ep_in);
+#else
+        return NULL;
+#endif
+}
+
+static inline struct usb_request *next_out_request(struct musb_hw_ep *hw_ep)
+{
+#ifdef CONFIG_USB_GADGET_MUSB_HDRC
+        return next_request(&hw_ep->ep_out);
+#else
+        return NULL;
+#endif
+}
+
+/*
+ * struct musb - Driver instance data.
+ */
+struct musb {
+        /* device lock */
+        spinlock_t              lock;
+        struct clk              *clock;
+        irqreturn_t             (*isr)(int, void *);
+        struct work_struct      irq_work;
+
+/* this hub status bit is reserved by USB 2.0 and not seen by usbcore */
+#define MUSB_PORT_STAT_RESUME   (1 << 31)
+
+        u32                     port1_status;
+
+#ifdef CONFIG_USB_MUSB_HDRC_HCD
+        unsigned long           rh_timer;
+
+        enum musb_h_ep0_state   ep0_stage;
+
+        /* bulk traffic normally dedicates endpoint hardware, and each
+         * direction has its own ring of host side endpoints.
+         * we try to progress the transfer at the head of each endpoint's
+         * queue until it completes or NAKs too much; then we try the next
+         * endpoint.
+         */
+        struct musb_hw_ep       *bulk_ep;
+
+        struct list_head        control;        /* of musb_qh */
+        struct list_head        in_bulk;        /* of musb_qh */
+        struct list_head        out_bulk;       /* of musb_qh */
+        struct musb_qh          *periodic[32];  /* tree of interrupt+iso */
+#endif
+
+        /* called with IRQs blocked; ON/nonzero implies starting a session,
+         * and waiting at least a_wait_vrise_tmout.
+         */
+        void                    (*board_set_vbus)(struct musb *, int is_on);
+
+        struct dma_controller   *dma_controller;
+
+        struct device           *controller;
+        void __iomem            *ctrl_base;
+        void __iomem            *mregs;
+
+#ifdef CONFIG_USB_TUSB6010
+        dma_addr_t              async;
+        dma_addr_t              sync;
+        void __iomem            *sync_va;
+#endif
+
+        /* passed down from chip/board specific irq handlers */
+        u8                      int_usb;
+        u16                     int_rx;
+        u16                     int_tx;
+
+        struct otg_transceiver  xceiv;
+
+        int nIrq;
+
+        struct musb_hw_ep        endpoints[MUSB_C_NUM_EPS];
+#define control_ep              endpoints
+
+#define VBUSERR_RETRY_COUNT     3
+        u16                     vbuserr_retry;
+        u16 epmask;
+        u8 nr_endpoints;
+
+        u8 board_mode;          /* enum musb_mode */
+        int                     (*board_set_power)(int state);
+
+        int                     (*set_clock)(struct clk *clk, int is_active);
+
+        u8                      min_power;      /* vbus for periph, in mA/2 */
+
+        bool                    is_host;
+
+        int                     a_wait_bcon;    /* VBUS timeout in msecs */
+        unsigned long           idle_timeout;   /* Next timeout in jiffies */
+
+        /* active means connected and not suspended */
+        unsigned                is_active:1;
+
+        unsigned is_multipoint:1;
+        unsigned ignore_disconnect:1;   /* during bus resets */
+
+#ifdef C_MP_TX
+        unsigned bulk_split:1;
+#define can_bulk_split(musb,type) \
+                (((type) == USB_ENDPOINT_XFER_BULK) && (musb)->bulk_split)
+#else
+#define can_bulk_split(musb, type)      0
+#endif
+
+#ifdef C_MP_RX
+        unsigned bulk_combine:1;
+#define can_bulk_combine(musb,type) \
+                (((type) == USB_ENDPOINT_XFER_BULK) && (musb)->bulk_combine)
+#else
+#define can_bulk_combine(musb, type)    0
+#endif
+
+#ifdef CONFIG_USB_GADGET_MUSB_HDRC
+        /* is_suspended means USB B_PERIPHERAL suspend */
+        unsigned                is_suspended:1;
+
+        /* may_wakeup means remote wakeup is enabled */
+        unsigned                may_wakeup:1;
+
+        /* is_self_powered is reported in device status and the
+         * config descriptor.  is_bus_powered means B_PERIPHERAL
+         * draws some VBUS current; both can be true.
+         */
+        unsigned                is_self_powered:1;
+        unsigned                is_bus_powered:1;
+
+        unsigned                set_address:1;
+        unsigned                test_mode:1;
+        unsigned                softconnect:1;
+
+        u8                      address;
+        u8                      test_mode_nr;
+        u16                     ackpend;                /* ep0 */
+        enum musb_g_ep0_state   ep0_state;
+        struct usb_gadget       g;                      /* the gadget */
+        struct usb_gadget_driver *gadget_driver;        /* its driver */
+#endif
+
+        struct musb_hdrc_config *config;
+
+#ifdef MUSB_CONFIG_PROC_FS
+        struct proc_dir_entry *proc_entry;
+#endif
+};
+
+static inline void musb_set_vbus(struct musb *musb, int is_on)
+{
+        musb->board_set_vbus(musb, is_on);
+}
+
+#ifdef CONFIG_USB_GADGET_MUSB_HDRC
+static inline struct musb *gadget_to_musb(struct usb_gadget *g)
+{
+        return container_of(g, struct musb, g);
+}
+#endif
+
+
+/***************************** Glue it together *****************************/
+
+extern const char musb_driver_name[];
+
+extern void musb_start(struct musb *musb);
+extern void musb_stop(struct musb *musb);
+
+extern void musb_write_fifo(struct musb_hw_ep *ep, u16 len, const u8 *src);
+extern void musb_read_fifo(struct musb_hw_ep *ep, u16 len, u8 *dst);
+
+extern void musb_load_testpacket(struct musb *);
+
+extern irqreturn_t musb_interrupt(struct musb *);
+
+extern void musb_platform_enable(struct musb *musb);
+extern void musb_platform_disable(struct musb *musb);
+
+extern void musb_hnp_stop(struct musb *musb);
+
+extern void musb_platform_set_mode(struct musb *musb, u8 musb_mode);
+
+#if defined(CONFIG_USB_TUSB6010) || \
+        defined(CONFIG_ARCH_OMAP2430) || defined(CONFIG_ARCH_OMAP34XX)
+extern void musb_platform_try_idle(struct musb *musb, unsigned long timeout);
+#else
+#define musb_platform_try_idle(x, y)            do {} while (0)
+#endif
+
+#ifdef CONFIG_USB_TUSB6010
+extern int musb_platform_get_vbus_status(struct musb *musb);
+#else
+#define musb_platform_get_vbus_status(x)        0
+#endif
+
+extern int __init musb_platform_init(struct musb *musb);
+extern int musb_platform_exit(struct musb *musb);
+
+#endif  /* __MUSB_CORE_H__ */