| /* include/linux/usb/msm_hsusb.h |
| * |
| * Copyright (C) 2008 Google, Inc. |
| * Author: Brian Swetland <swetland@google.com> |
| * Copyright (c) 2009-2018, The Linux Foundation. All rights reserved. |
| * |
| * This software is licensed under the terms of the GNU General Public |
| * License version 2, as published by the Free Software Foundation, and |
| * may be copied, distributed, and modified under those terms. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| */ |
| |
| #ifndef __ASM_ARCH_MSM_HSUSB_H |
| #define __ASM_ARCH_MSM_HSUSB_H |
| |
| #include <linux/types.h> |
| #include <linux/usb/ch9.h> |
| #include <linux/usb/gadget.h> |
| #include <linux/usb/otg.h> |
| #include <linux/clk.h> |
| #include <linux/pm_qos.h> |
| #include <linux/hrtimer.h> |
| #include <linux/power_supply.h> |
| #include <linux/cdev.h> |
| #include <linux/usb_bam.h> |
| #include <linux/extcon.h> |
| #include <linux/regulator/driver.h> |
| /** |
| * Requested USB votes for NOC frequency |
| * |
| * USB_NOC_NOM_VOTE Vote for NOM set of NOC frequencies |
| * USB_NOC_SVS_VOTE Vote for SVS set of NOC frequencies |
| * |
| */ |
| enum usb_noc_mode { |
| USB_NOC_NOM_VOTE = 0, |
| USB_NOC_SVS_VOTE, |
| USB_NOC_NUM_VOTE, |
| }; |
| |
| /** |
| * Different states involved in USB charger detection. |
| * |
| * USB_CHG_STATE_UNDEFINED USB charger is not connected or detection |
| * process is not yet started. |
| * USB_CHG_STATE_IN_PROGRESS Charger detection in progress |
| * USB_CHG_STATE_WAIT_FOR_DCD Waiting for Data pins contact. |
| * USB_CHG_STATE_DCD_DONE Data pin contact is detected. |
| * USB_CHG_STATE_PRIMARY_DONE Primary detection is completed (Detects |
| * between SDP and DCP/CDP). |
| * USB_CHG_STATE_SECONDARY_DONE Secondary detection is completed (Detects |
| * between DCP and CDP). |
| * USB_CHG_STATE_DETECTED USB charger type is determined. |
| * |
| */ |
| enum usb_chg_state { |
| USB_CHG_STATE_UNDEFINED = 0, |
| USB_CHG_STATE_IN_PROGRESS, |
| USB_CHG_STATE_WAIT_FOR_DCD, |
| USB_CHG_STATE_DCD_DONE, |
| USB_CHG_STATE_PRIMARY_DONE, |
| USB_CHG_STATE_SECONDARY_DONE, |
| USB_CHG_STATE_DETECTED, |
| }; |
| |
| /** |
| * USB charger types |
| * |
| * USB_INVALID_CHARGER Invalid USB charger. |
| * USB_SDP_CHARGER Standard downstream port. Refers to a downstream port |
| * on USB2.0 compliant host/hub. |
| * USB_DCP_CHARGER Dedicated charger port (AC charger/ Wall charger). |
| * USB_CDP_CHARGER Charging downstream port. Enumeration can happen and |
| * IDEV_CHG_MAX can be drawn irrespective of USB state. |
| * USB_NONCOMPLIANT_CHARGER A non-compliant charger pull DP and DM to specific |
| * voltages between 2.0-3.3v for identification. |
| * |
| */ |
| enum usb_chg_type { |
| USB_INVALID_CHARGER = 0, |
| USB_SDP_CHARGER, |
| USB_DCP_CHARGER, |
| USB_CDP_CHARGER, |
| USB_NONCOMPLIANT_CHARGER, |
| USB_FLOATED_CHARGER, |
| }; |
| |
| /** |
| * Maintain state for hvdcp external charger status |
| * DEFAULT This is used when DCP is detected |
| * ACTIVE This is used when ioctl is called to block LPM |
| * INACTIVE This is used when ioctl is called to unblock LPM |
| */ |
| |
| enum usb_ext_chg_status { |
| DEFAULT = 1, |
| ACTIVE, |
| INACTIVE, |
| }; |
| |
| /** |
| * USB ID state |
| */ |
| enum usb_id_state { |
| USB_ID_GROUND = 0, |
| USB_ID_FLOAT, |
| }; |
| |
| #define USB_NUM_BUS_CLOCKS 3 |
| |
| /** |
| * struct msm_otg: OTG driver data. Shared by HCD and DCD. |
| * @otg: USB OTG Transceiver structure. |
| * @pdata: otg device platform data. |
| * @irq: IRQ number assigned for HSUSB controller. |
| * @async_irq: IRQ number used by some controllers during low power state |
| * @phy_irq: IRQ number assigned for PHY to notify events like id and line |
| state changes. |
| * @pclk: clock struct of iface_clk. |
| * @core_clk: clock struct of core_bus_clk. |
| * @sleep_clk: clock struct of sleep_clk for USB PHY. |
| * @phy_reset_clk: clock struct of phy_reset_clk for USB PHY. This clock is |
| a reset only clock and resets the PHY, ULPI bridge and |
| CSR wrapper. |
| * @phy_por_clk: clock struct of phy_por_clk for USB PHY. This clock is |
| a reset only clock and resets only the PHY (POR). |
| * @phy_csr_clk: clock struct of phy_csr_clk for USB PHY. This clock is |
| required to access PHY CSR registers via AHB2PHY interface. |
| * @bus_clks: bimc/snoc/pcnoc clock struct. |
| * @core_reset: Reset control for core_clk |
| * @phy_reset: Reset control for phy_reset_clk |
| * @phy_por_reset: Reset control for phy_por_clk |
| * @default_noc_mode: default frequency for NOC clocks - SVS or NOM |
| * @core_clk_rate: core clk max frequency |
| * @regs: ioremapped register base address. |
| * @usb_phy_ctrl_reg: relevant PHY_CTRL_REG register base address. |
| * @inputs: OTG state machine inputs(Id, SessValid etc). |
| * @sm_work: OTG state machine work. |
| * @sm_work_pending: OTG state machine work is pending, queued post pm_resume |
| * @resume_pending: USB h/w lpm_exit pending. Done on next sm_work run |
| * @pm_suspended: OTG device is system(PM) suspended. |
| * @pm_notify: Notifier to receive system wide PM transition events. |
| It is used to defer wakeup events processing until |
| system is RESUMED. |
| * @in_lpm: indicates low power mode (LPM) state. |
| * @async_int: IRQ line on which ASYNC interrupt arrived in LPM. |
| * @cur_power: The amount of mA available from downstream port. |
| * @otg_wq: Strict order otg workqueue for OTG works (SM/ID/SUSPEND). |
| * @chg_work: Charger detection work. |
| * @chg_state: The state of charger detection process. |
| * @chg_type: The type of charger attached. |
| * @bus_perf_client: Bus performance client handle to request BUS bandwidth |
| * @host_bus_suspend: indicates host bus suspend or not. |
| * @device_bus_suspend: indicates device bus suspend or not. |
| * @bus_clks_enabled: indicates pcnoc/snoc/bimc clocks are on or not. |
| * @chg_check_timer: The timer used to implement the workaround to detect |
| * very slow plug in of wall charger. |
| * @bc1p2_current_max: Max charging current allowed as per bc1.2 chg detection |
| * @typec_current_max: Max charging current allowed as per type-c chg detection |
| * @is_ext_chg_dcp: To indicate whether charger detected by external entity |
| SMB hardware is DCP charger or not. |
| * @ext_id_irq: IRQ for ID interrupt. |
| * @phy_irq_pending: Gets set when PHY IRQ arrives in LPM. |
| * @id_state: Indicates USBID line status. |
| * @rm_pulldown: Indicates pulldown status on D+ and D- data lines. |
| * @extcon_vbus: Used for VBUS notification registration. |
| * @extcon_id: Used for ID notification registration. |
| * @vbus_nb: Notification callback for VBUS event. |
| * @id_nb: Notification callback for ID event. |
| * @dpdm_desc: Regulator descriptor for D+ and D- voting. |
| * @dpdm_rdev: Regulator class device for dpdm regulator. |
| * @dbg_idx: Dynamic debug buffer Index. |
| * @dbg_lock: Dynamic debug buffer Lock. |
| * @buf: Dynamic Debug Buffer. |
| * @max_nominal_system_clk_rate: max freq at which system clock can run in |
| nominal mode. |
| */ |
| struct msm_otg { |
| struct usb_phy phy; |
| struct msm_otg_platform_data *pdata; |
| struct platform_device *pdev; |
| int irq; |
| int async_irq; |
| int phy_irq; |
| struct clk *xo_clk; |
| struct clk *pclk; |
| struct clk *core_clk; |
| struct clk *sleep_clk; |
| struct clk *phy_reset_clk; |
| struct clk *phy_por_clk; |
| struct clk *phy_csr_clk; |
| struct clk *bus_clks[USB_NUM_BUS_CLOCKS]; |
| struct clk *phy_ref_clk; |
| struct reset_control *core_reset; |
| struct reset_control *phy_reset; |
| struct reset_control *phy_por_reset; |
| long core_clk_rate; |
| long core_clk_svs_rate; |
| long core_clk_nominal_rate; |
| enum usb_noc_mode default_noc_mode; |
| struct resource *io_res; |
| void __iomem *regs; |
| void __iomem *phy_csr_regs; |
| void __iomem *usb_phy_ctrl_reg; |
| #define ID 0 |
| #define B_SESS_VLD 1 |
| #define A_BUS_SUSPEND 14 |
| #define B_FALSE_SDP 18 |
| unsigned long inputs; |
| struct work_struct sm_work; |
| bool sm_work_pending; |
| bool resume_pending; |
| atomic_t pm_suspended; |
| struct notifier_block pm_notify; |
| atomic_t in_lpm; |
| bool err_event_seen; |
| int async_int; |
| unsigned int cur_power; |
| struct workqueue_struct *otg_wq; |
| struct delayed_work chg_work; |
| struct delayed_work id_status_work; |
| enum usb_chg_state chg_state; |
| enum usb_chg_type chg_type; |
| unsigned int dcd_time; |
| unsigned long caps; |
| uint32_t bus_perf_client; |
| bool host_bus_suspend; |
| bool device_bus_suspend; |
| bool bus_clks_enabled; |
| struct timer_list chg_check_timer; |
| /* |
| * Allowing PHY power collpase turns off the HSUSB 3.3v and 1.8v |
| * analog regulators while going to low power mode. |
| * Currently only 28nm PHY has the support to allowing PHY |
| * power collapse since it doesn't have leakage currents while |
| * turning off the power rails. |
| */ |
| #define ALLOW_PHY_POWER_COLLAPSE BIT(0) |
| /* |
| * Allow PHY RETENTION mode before turning off the digital |
| * voltage regulator(VDDCX). |
| */ |
| #define ALLOW_PHY_RETENTION BIT(1) |
| /* |
| * Allow putting the core in Low Power mode, when |
| * USB bus is suspended but cable is connected. |
| */ |
| #define ALLOW_LPM_ON_DEV_SUSPEND BIT(2) |
| /* |
| * Allowing PHY regulators LPM puts the HSUSB 3.3v and 1.8v |
| * analog regulators into LPM while going to USB low power mode. |
| */ |
| #define ALLOW_PHY_REGULATORS_LPM BIT(3) |
| /* |
| * Allow PHY RETENTION mode before turning off the digital |
| * voltage regulator(VDDCX) during host mode. |
| */ |
| #define ALLOW_HOST_PHY_RETENTION BIT(4) |
| /* |
| * Allow VDD minimization without putting PHY into retention |
| * for fixing PHY current leakage issue when LDOs ar turned off. |
| */ |
| #define ALLOW_VDD_MIN_WITH_RETENTION_DISABLED BIT(5) |
| |
| /* |
| * PHY can keep D+ pull-up during peripheral bus suspend and |
| * D+/D- pull-down during host bus suspend without any |
| * re-work. This is possible only when PHY DVDD is supplied |
| * by a PMIC LDO (unlike VDDCX/VDDMX). |
| */ |
| #define ALLOW_BUS_SUSPEND_WITHOUT_REWORK BIT(6) |
| unsigned long lpm_flags; |
| #define PHY_PWR_COLLAPSED BIT(0) |
| #define PHY_RETENTIONED BIT(1) |
| #define XO_SHUTDOWN BIT(2) |
| #define CLOCKS_DOWN BIT(3) |
| #define PHY_REGULATORS_LPM BIT(4) |
| int reset_counter; |
| unsigned int online; |
| unsigned int host_mode; |
| unsigned int bc1p2_current_max; |
| unsigned int typec_current_max; |
| |
| dev_t ext_chg_dev; |
| struct cdev ext_chg_cdev; |
| struct class *ext_chg_class; |
| struct device *ext_chg_device; |
| bool ext_chg_opened; |
| enum usb_ext_chg_status ext_chg_active; |
| struct completion ext_chg_wait; |
| struct pinctrl *phy_pinctrl; |
| bool is_ext_chg_dcp; |
| struct qpnp_vadc_chip *vadc_dev; |
| int ext_id_irq; |
| bool phy_irq_pending; |
| enum usb_id_state id_state; |
| bool rm_pulldown; |
| struct extcon_dev *extcon_vbus; |
| struct extcon_dev *extcon_id; |
| struct notifier_block vbus_nb; |
| struct notifier_block id_nb; |
| struct regulator_desc dpdm_rdesc; |
| struct regulator_dev *dpdm_rdev; |
| /* Maximum debug message length */ |
| #define DEBUG_MSG_LEN 128UL |
| /* Maximum number of messages */ |
| #define DEBUG_MAX_MSG 256UL |
| unsigned int dbg_idx; |
| rwlock_t dbg_lock; |
| |
| char (buf[DEBUG_MAX_MSG])[DEBUG_MSG_LEN]; /* buffer */ |
| unsigned int vbus_state; |
| unsigned int usb_irq_count; |
| int pm_qos_latency; |
| struct pm_qos_request pm_qos_req_dma; |
| struct delayed_work perf_vote_work; |
| }; |
| |
| struct ci13xxx_platform_data { |
| u8 usb_core_id; |
| /* |
| * value of 2^(log2_itc-1) will be used as the interrupt threshold |
| * (ITC), when log2_itc is between 1 to 7. |
| */ |
| int log2_itc; |
| bool l1_supported; |
| bool enable_ahb2ahb_bypass; |
| bool enable_streaming; |
| bool enable_axi_prefetch; |
| }; |
| |
| #ifdef CONFIG_USB_BAM |
| void msm_bam_set_usb_host_dev(struct device *dev); |
| bool msm_usb_bam_enable(enum usb_ctrl ctrl, bool bam_enable); |
| int msm_do_bam_disable_enable(enum usb_ctrl ctrl); |
| #else |
| static inline void msm_bam_set_usb_host_dev(struct device *dev) {} |
| static inline bool msm_usb_bam_enable(enum usb_ctrl ctrl, bool bam_enable) |
| { |
| return true; |
| } |
| int msm_do_bam_disable_enable(enum usb_ctrl ctrl) { return true; } |
| #endif |
| #ifdef CONFIG_USB_CI13XXX_MSM |
| void msm_hw_soft_reset(void); |
| #else |
| static inline void msm_hw_soft_reset(void) |
| { |
| } |
| #endif |
| |
| #endif |