include/linux/usb/chipidea.h

   1 /*
   2  * Platform data for the chipidea USB dual role controller
   3  */
   4
   5 #ifndef __LINUX_USB_CHIPIDEA_H
   6 #define __LINUX_USB_CHIPIDEA_H
   7
   8 #include <linux/extcon.h>
   9 #include <linux/usb/otg.h>
  10
  11 struct ci_hdrc;
  12
  13 /**
  14  * struct ci_hdrc_cable - structure for external connector cable state tracking
  15  * @connected: true if cable is connected, false otherwise
  16  * @changed: set to true when extcon event happen
  17  * @enabled: set to true if we've enabled the vbus or id interrupt
  18  * @edev: device which generate events
  19  * @ci: driver state of the chipidea device
  20  * @nb: hold event notification callback
  21  * @conn: used for notification registration
  22  */
  23 struct ci_hdrc_cable {
  24         bool                            connected;
  25         bool                            changed;
  26         bool                            enabled;
  27         struct extcon_dev               *edev;
  28         struct ci_hdrc                  *ci;
  29         struct notifier_block           nb;
  30 };
  31
  32 struct ci_hdrc_platform_data {
  33         const char      *name;
  34         /* offset of the capability registers */
  35         uintptr_t        capoffset;
  36         unsigned         power_budget;
  37         struct phy      *phy;
  38         /* old usb_phy interface */
  39         struct usb_phy  *usb_phy;
  40         enum usb_phy_interface phy_mode;
  41         unsigned long    flags;
  42 #define CI_HDRC_REGS_SHARED             BIT(0)
  43 #define CI_HDRC_DISABLE_DEVICE_STREAMING        BIT(1)
  44 #define CI_HDRC_SUPPORTS_RUNTIME_PM     BIT(2)
  45 #define CI_HDRC_DISABLE_HOST_STREAMING  BIT(3)
  46 #define CI_HDRC_DISABLE_STREAMING (CI_HDRC_DISABLE_DEVICE_STREAMING |   \
  47                 CI_HDRC_DISABLE_HOST_STREAMING)
  48         /*
  49          * Only set it when DCCPARAMS.DC==1 and DCCPARAMS.HC==1,
  50          * but otg is not supported (no register otgsc).
  51          */
  52 #define CI_HDRC_DUAL_ROLE_NOT_OTG       BIT(4)
  53 #define CI_HDRC_IMX28_WRITE_FIX         BIT(5)
  54 #define CI_HDRC_FORCE_FULLSPEED         BIT(6)
  55 #define CI_HDRC_TURN_VBUS_EARLY_ON      BIT(7)
  56 #define CI_HDRC_SET_NON_ZERO_TTHA       BIT(8)
  57 #define CI_HDRC_OVERRIDE_AHB_BURST      BIT(9)
  58 #define CI_HDRC_OVERRIDE_TX_BURST       BIT(10)
  59 #define CI_HDRC_OVERRIDE_RX_BURST       BIT(11)
  60 #define CI_HDRC_OVERRIDE_PHY_CONTROL    BIT(12) /* Glue layer manages phy */
  61         enum usb_dr_mode        dr_mode;
  62 #define CI_HDRC_CONTROLLER_RESET_EVENT          0
  63 #define CI_HDRC_CONTROLLER_STOPPED_EVENT        1
  64         int     (*notify_event) (struct ci_hdrc *ci, unsigned event);
  65         struct regulator        *reg_vbus;
  66         struct usb_otg_caps     ci_otg_caps;
  67         bool                    tpl_support;
  68         /* interrupt threshold setting */
  69         u32                     itc_setting;
  70         u32                     ahb_burst_config;
  71         u32                     tx_burst_size;
  72         u32                     rx_burst_size;
  73
  74         /* VBUS and ID signal state tracking, using extcon framework */
  75         struct ci_hdrc_cable            vbus_extcon;
  76         struct ci_hdrc_cable            id_extcon;
  77         u32                     phy_clkgate_delay_us;
  78 };
  79
  80 /* Default offset of capability registers */
  81 #define DEF_CAPOFFSET           0x100
  82
  83 /* Add ci hdrc device */
  84 struct platform_device *ci_hdrc_add_device(struct device *dev,
  85                         struct resource *res, int nres,
  86                         struct ci_hdrc_platform_data *platdata);
  87 /* Remove ci hdrc device */
  88 void ci_hdrc_remove_device(struct platform_device *pdev);
  89
  90 #endif