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@@ -27,25 +27,38 @@
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/******************************************************************************
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* STRUCTURES
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*****************************************************************************/
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-/* Extension of usb_ep */
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+/**
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+ * struct ci13xxx_ep - endpoint representation
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+ * @ep: endpoint structure for gadget drivers
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+ * @dir: endpoint direction (TX/RX)
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+ * @num: endpoint number
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+ * @type: endpoint type
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+ * @name: string description of the endpoint
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+ * @qh: queue head for this endpoint
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+ * @wedge: is the endpoint wedged
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+ * @udc: pointer to the controller
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+ * @lock: pointer to controller's spinlock
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+ * @device: pointer to gadget's struct device
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+ * @td_pool: pointer to controller's TD pool
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+ */
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struct ci13xxx_ep {
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- struct usb_ep ep;
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- u8 dir;
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- u8 num;
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- u8 type;
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- char name[16];
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+ struct usb_ep ep;
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+ u8 dir;
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+ u8 num;
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+ u8 type;
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+ char name[16];
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struct {
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- struct list_head queue;
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- struct ci13xxx_qh *ptr;
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- dma_addr_t dma;
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- } qh;
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- int wedge;
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+ struct list_head queue;
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+ struct ci13xxx_qh *ptr;
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+ dma_addr_t dma;
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+ } qh;
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+ int wedge;
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/* global resources */
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- struct ci13xxx *udc;
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- spinlock_t *lock;
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- struct device *device;
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- struct dma_pool *td_pool;
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+ struct ci13xxx *udc;
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+ spinlock_t *lock;
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+ struct device *device;
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+ struct dma_pool *td_pool;
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};
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enum ci_role {
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@@ -68,48 +81,85 @@ struct ci_role_driver {
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const char *name;
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};
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+/**
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+ * struct hw_bank - hardware register mapping representation
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+ * @lpm: set if the device is LPM capable
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+ * @abs: absolute address of the beginning of register window
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+ * @cap: capability registers
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+ * @op: operational registers
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+ * @size: size of the register window
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+ * @regmap: register lookup table
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+ */
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struct hw_bank {
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- unsigned lpm; /* is LPM? */
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- void __iomem *abs; /* bus map offset */
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- void __iomem *cap; /* bus map offset + CAP offset */
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- void __iomem *op; /* bus map offset + OP offset */
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- size_t size; /* bank size */
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- void __iomem **regmap;
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+ unsigned lpm;
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+ void __iomem *abs;
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+ void __iomem *cap;
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+ void __iomem *op;
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+ size_t size;
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+ void __iomem **regmap;
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};
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-/* CI13XXX UDC descriptor & global resources */
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+/**
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+ * struct ci13xxx - chipidea device representation
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+ * @dev: pointer to parent device
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+ * @lock: access synchronization
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+ * @hw_bank: hardware register mapping
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+ * @irq: IRQ number
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+ * @roles: array of supported roles for this controller
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+ * @role: current role
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+ * @is_otg: if the device is otg-capable
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+ * @work: work for role changing
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+ * @wq: workqueue thread
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+ * @qh_pool: allocation pool for queue heads
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+ * @td_pool: allocation pool for transfer descriptors
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+ * @gadget: device side representation for peripheral controller
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+ * @driver: gadget driver
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+ * @hw_ep_max: total number of endpoints supported by hardware
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+ * @ci13xxx_ep: array of endpoints
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+ * @ep0_dir: ep0 direction
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+ * @ep0out: pointer to ep0 OUT endpoint
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+ * @ep0in: pointer to ep0 IN endpoint
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+ * @status: ep0 status request
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+ * @setaddr: if we should set the address on status completion
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+ * @address: usb address received from the host
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+ * @remote_wakeup: host-enabled remote wakeup
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+ * @suspended: suspended by host
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+ * @test_mode: the selected test mode
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+ * @udc_driver: platform specific information supplied by parent device
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+ * @vbus_active: is VBUS active
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+ * @transceiver: pointer to USB PHY, if any
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+ */
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struct ci13xxx {
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- spinlock_t lock; /* ctrl register bank access */
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-
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- struct dma_pool *qh_pool; /* DMA pool for queue heads */
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- struct dma_pool *td_pool; /* DMA pool for transfer descs */
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- struct usb_request *status; /* ep0 status request */
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-
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- struct device *dev;
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- struct usb_gadget gadget; /* USB slave device */
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- struct ci13xxx_ep ci13xxx_ep[ENDPT_MAX]; /* extended endpts */
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- u32 ep0_dir; /* ep0 direction */
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- struct ci13xxx_ep *ep0out, *ep0in;
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- unsigned hw_ep_max; /* number of hw endpoints */
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-
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- bool setaddr;
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- u8 address;
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- u8 remote_wakeup; /* Is remote wakeup feature
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- enabled by the host? */
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- u8 suspended; /* suspended by the host */
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- u8 test_mode; /* the selected test mode */
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-
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- struct hw_bank hw_bank;
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- int irq;
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- struct usb_gadget_driver *driver; /* 3rd party gadget driver */
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- struct ci13xxx_udc_driver *udc_driver; /* device controller driver */
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- int vbus_active; /* is VBUS active */
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- struct usb_phy *transceiver; /* Transceiver struct */
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- struct ci_role_driver *roles[CI_ROLE_END];
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- enum ci_role role;
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- bool is_otg;
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- struct work_struct work;
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- struct workqueue_struct *wq;
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+ struct device *dev;
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+ spinlock_t lock;
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+ struct hw_bank hw_bank;
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+ int irq;
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+ struct ci_role_driver *roles[CI_ROLE_END];
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+ enum ci_role role;
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+ bool is_otg;
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+ struct work_struct work;
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+ struct workqueue_struct *wq;
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+
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+ struct dma_pool *qh_pool;
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+ struct dma_pool *td_pool;
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+
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+ struct usb_gadget gadget;
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+ struct usb_gadget_driver *driver;
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+ unsigned hw_ep_max;
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+ struct ci13xxx_ep ci13xxx_ep[ENDPT_MAX];
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+ u32 ep0_dir;
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+ struct ci13xxx_ep *ep0out, *ep0in;
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+
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+ struct usb_request *status;
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+ bool setaddr;
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+ u8 address;
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+ u8 remote_wakeup;
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+ u8 suspended;
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+ u8 test_mode;
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+
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+ struct ci13xxx_udc_driver *udc_driver;
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+ int vbus_active;
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+ struct usb_phy *transceiver;
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};
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static inline struct ci_role_driver *ci_role(struct ci13xxx *ci)
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