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