| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame^] | 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 |