8ede2ecc3e
add event thread to execute events serially from event queue. Also timeout mode is supported which allow an event be deferred to be executed at later time. Both link and phy compliant tests had been done successfully. Changes in v2: -- Fix potential deadlock by removing redundant connect_mutex -- Check and enable link clock during modeset -- Drop unused code and fix function prototypes. -- set sink power to normal operation state (D0) before DPCD read Changes in v3: -- push idle pattern at main link before timing generator off -- add timeout handles for both connect and disconnect Changes in v4: -- add ST_SUSPEND_PENDING to handles suspend/modeset test operations -- clear dp phy aux interrupt status when ERR_DPPHY_AUX error -- send segment addr during edid read -- clear bpp depth before MISC register write Changes in v5: -- add ST_SUSPENDED to fix crash at resume Changes in v6: -- at msm_dp_display_enable() do not return until resume_done to avoid kms commit timeout Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org> Signed-off-by: Rob Clark <robdclark@chromium.org>
80 lines
2.1 KiB
C
80 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2012-2020, The Linux Foundation. All rights reserved.
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*/
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#ifndef _DP_HPD_H_
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#define _DP_HPD_H_
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//#include <linux/usb/usbpd.h>
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#include <linux/types.h>
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#include <linux/device.h>
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enum plug_orientation {
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ORIENTATION_NONE,
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ORIENTATION_CC1,
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ORIENTATION_CC2,
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};
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/**
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* struct dp_usbpd - DisplayPort status
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*
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* @orientation: plug orientation configuration
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* @low_pow_st: low power state
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* @adaptor_dp_en: adaptor functionality enabled
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* @multi_func: multi-function preferred
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* @usb_config_req: request to switch to usb
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* @exit_dp_mode: request exit from displayport mode
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* @hpd_high: Hot Plug Detect signal is high.
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* @hpd_irq: Change in the status since last message
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* @alt_mode_cfg_done: bool to specify alt mode status
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* @debug_en: bool to specify debug mode
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* @connect: simulate disconnect or connect for debug mode
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*/
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struct dp_usbpd {
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enum plug_orientation orientation;
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bool low_pow_st;
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bool adaptor_dp_en;
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bool multi_func;
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bool usb_config_req;
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bool exit_dp_mode;
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bool hpd_high;
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bool hpd_irq;
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bool alt_mode_cfg_done;
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bool debug_en;
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int (*connect)(struct dp_usbpd *dp_usbpd, bool hpd);
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};
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/**
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* struct dp_usbpd_cb - callback functions provided by the client
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*
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* @configure: called by usbpd module when PD communication has
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* been completed and the usb peripheral has been configured on
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* dp mode.
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* @disconnect: notify the cable disconnect issued by usb.
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* @attention: notify any attention message issued by usb.
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*/
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struct dp_usbpd_cb {
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int (*configure)(struct device *dev);
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int (*disconnect)(struct device *dev);
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int (*attention)(struct device *dev);
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};
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/**
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* dp_hpd_get() - setup hpd module
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*
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* @dev: device instance of the caller
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* @cb: struct containing callback function pointers.
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*
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* This function allows the client to initialize the usbpd
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* module. The module will communicate with HPD module.
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*/
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struct dp_usbpd *dp_hpd_get(struct device *dev, struct dp_usbpd_cb *cb);
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int dp_hpd_register(struct dp_usbpd *dp_usbpd);
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void dp_hpd_unregister(struct dp_usbpd *dp_usbpd);
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int dp_hpd_connect(struct dp_usbpd *dp_usbpd, bool hpd);
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#endif /* _DP_HPD_H_ */
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