include/linux/usb/chipidea.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Platform data for the chipidea USB dual role controller
   4  */
   5
   6 #ifndef __LINUX_USB_CHIPIDEA_H
   7 #define __LINUX_USB_CHIPIDEA_H
   8
   9 #include <linux/extcon.h>
  10 #include <linux/usb/otg.h>
  11
  12 struct ci_hdrc;
  13
  14 /**
  15  * struct ci_hdrc_cable - structure for external connector cable state tracking
  16  * @connected: true if cable is connected, false otherwise
  17  * @changed: set to true when extcon event happen
  18  * @enabled: set to true if we've enabled the vbus or id interrupt
  19  * @edev: device which generate events
  20  * @ci: driver state of the chipidea device
  21  * @nb: hold event notification callback
  22  * @conn: used for notification registration
  23  */
  24 struct ci_hdrc_cable {
  25         bool                            connected;
  26         bool                            changed;
  27         bool                            enabled;
  28         struct extcon_dev               *edev;
  29         struct ci_hdrc                  *ci;
  30         struct notifier_block           nb;
  31 };
  32
  33 struct ci_hdrc_platform_data {
  34         const char      *name;
  35         /* offset of the capability registers */
  36         uintptr_t        capoffset;
  37         unsigned         power_budget;
  38         struct phy      *phy;
  39         /* old usb_phy interface */
  40         struct usb_phy  *usb_phy;
  41         enum usb_phy_interface phy_mode;
  42         unsigned long    flags;
  43 #define CI_HDRC_REGS_SHARED             BIT(0)
  44 #define CI_HDRC_DISABLE_DEVICE_STREAMING        BIT(1)
  45 #define CI_HDRC_SUPPORTS_RUNTIME_PM     BIT(2)
  46 #define CI_HDRC_DISABLE_HOST_STREAMING  BIT(3)
  47 #define CI_HDRC_DISABLE_STREAMING (CI_HDRC_DISABLE_DEVICE_STREAMING |   \
  48                 CI_HDRC_DISABLE_HOST_STREAMING)
  49         /*
  50          * Only set it when DCCPARAMS.DC==1 and DCCPARAMS.HC==1,
  51          * but otg is not supported (no register otgsc).
  52          */
  53 #define CI_HDRC_DUAL_ROLE_NOT_OTG       BIT(4)
  54 #define CI_HDRC_IMX28_WRITE_FIX         BIT(5)
  55 #define CI_HDRC_FORCE_FULLSPEED         BIT(6)
  56 #define CI_HDRC_TURN_VBUS_EARLY_ON      BIT(7)
  57 #define CI_HDRC_SET_NON_ZERO_TTHA       BIT(8)
  58 #define CI_HDRC_OVERRIDE_AHB_BURST      BIT(9)
  59 #define CI_HDRC_OVERRIDE_TX_BURST       BIT(10)
  60 #define CI_HDRC_OVERRIDE_RX_BURST       BIT(11)
  61 #define CI_HDRC_OVERRIDE_PHY_CONTROL    BIT(12) /* Glue layer manages phy */
  62 #define CI_HDRC_REQUIRES_ALIGNED_DMA    BIT(13)
  63         enum usb_dr_mode        dr_mode;
  64 #define CI_HDRC_CONTROLLER_RESET_EVENT          0
  65 #define CI_HDRC_CONTROLLER_STOPPED_EVENT        1
  66         int     (*notify_event) (struct ci_hdrc *ci, unsigned event);
  67         struct regulator        *reg_vbus;
  68         struct usb_otg_caps     ci_otg_caps;
  69         bool                    tpl_support;
  70         /* interrupt threshold setting */
  71         u32                     itc_setting;
  72         u32                     ahb_burst_config;
  73         u32                     tx_burst_size;
  74         u32                     rx_burst_size;
  75
  76         /* VBUS and ID signal state tracking, using extcon framework */
  77         struct ci_hdrc_cable            vbus_extcon;
  78         struct ci_hdrc_cable            id_extcon;
  79         u32                     phy_clkgate_delay_us;
  80 };
  81
  82 /* Default offset of capability registers */
  83 #define DEF_CAPOFFSET           0x100
  84
  85 /* Add ci hdrc device */
  86 struct platform_device *ci_hdrc_add_device(struct device *dev,
  87                         struct resource *res, int nres,
  88                         struct ci_hdrc_platform_data *platdata);
  89 /* Remove ci hdrc device */
  90 void ci_hdrc_remove_device(struct platform_device *pdev);
  91
  92 #endif