mirror of
https://github.com/torvalds/linux.git
synced 2026-04-19 23:34:00 -04:00
5814b8bf08
Currently DP driver is executed independent of PM runtime framework. This leads msm eDP panel can not being detected by edp_panel driver during generic_edp_panel_probe() due to AUX DPCD read failed at edp panel driver. Incorporate PM runtime framework into DP driver so that host controller's power and clocks are enable/disable through PM runtime mechanism. Once PM runtime framework is incorporated into DP driver, waking up device from power up path is not necessary. Hence remove it. After incorporating pm_runtime framework into eDP/DP driver, dp_pm_suspend() to handle power off both DP phy and controller during suspend and dp_pm_resume() to handle power on both DP phy and controller during resume are not necessary. Therefore both dp_pm_suspend() and dp_pm_resume() are dropped and replace with dp_pm_runtime_suspend() and dp_pm_runtime_resume() respectively. Changes in v9: -- silent compiler warning message at dp_power_init() and dp_power_deinit() with W1 flag Changes in v7: -- add comments to dp_pm_runtime_resume() -- add comments to dp_bridge_hpd_enable() -- delete dp->hpd_state = ST_DISCONNECTED from dp_bridge_hpd_notify() Changes in v6: -- delete dp_power_client_deinit(dp->power); -- remove if (!dp->dp_display.is_edp) condition checkout at plug_handle() -- remove if (!dp->dp_display.is_edp) condition checkout at unplug_handle() -- add IRQF_NO_AUTOEN to devm_request_irq() -- add enable_irq() and disable_irq() to pm_runtime_resume()/suspend() -- del dp->hpd_state = ST_DISCONNECTED from dp_bridge_hpd_disable() Changes in v5: -- remove pm_runtime_put_autosuspend feature, use pm_runtime_put_sync() -- squash add pm_runtime_force_suspend()/resume() patch into this patch Changes in v4: -- reworded commit text to explain why pm_framework is required for edp panel -- reworded commit text to explain autosuspend is choiced -- delete EV_POWER_PM_GET and PM_EV_POWER_PUT from changes #3 -- delete dp_display_pm_get() and dp_display_pm_Put() from changes #3 -- return value from pm_runtime_resume_and_get() directly -- check return value of devm_pm_runtime_enable() -- delete pm_runtime_xxx from dp_display_remove() -- drop dp_display_host_init() from EV_HPD_INIT_SETUP -- drop both dp_pm_prepare() and dp_pm_compete() from this change -- delete ST_SUSPENDED state -- rewording commit text to add more details regrading the purpose of this change Changes in v3: -- incorporate removing pm_runtime_xx() from dp_pwer.c to this patch -- use pm_runtime_resume_and_get() instead of pm_runtime_get() -- error checking pm_runtime_resume_and_get() return value -- add EV_POWER_PM_GET and PM_EV_POWER_PUT to handle HPD_GPIO case -- replace dp_pm_suspend() with pm_runtime_force_suspend() -- replace dp_pm_resume() with pm_runtime_force_resume() Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Patchwork: https://patchwork.freedesktop.org/patch/570073/ Link: https://lore.kernel.org/r/1701472789-25951-6-git-send-email-quic_khsieh@quicinc.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
96 lines
2.4 KiB
C
96 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (c) 2012-2020, The Linux Foundation. All rights reserved.
|
|
*/
|
|
|
|
#ifndef _DP_POWER_H_
|
|
#define _DP_POWER_H_
|
|
|
|
#include "dp_parser.h"
|
|
|
|
/**
|
|
* sruct dp_power - DisplayPort's power related data
|
|
*
|
|
* @init: initializes the regulators/core clocks/GPIOs/pinctrl
|
|
* @deinit: turns off the regulators/core clocks/GPIOs/pinctrl
|
|
* @clk_enable: enable/disable the DP clocks
|
|
* @set_pixel_clk_parent: set the parent of DP pixel clock
|
|
*/
|
|
struct dp_power {
|
|
bool core_clks_on;
|
|
bool link_clks_on;
|
|
bool stream_clks_on;
|
|
};
|
|
|
|
/**
|
|
* dp_power_init() - enable power supplies for display controller
|
|
*
|
|
* @power: instance of power module
|
|
* return: 0 if success or error if failure.
|
|
*
|
|
* This API will turn on the regulators and configures gpio's
|
|
* aux/hpd.
|
|
*/
|
|
int dp_power_init(struct dp_power *power);
|
|
|
|
/**
|
|
* dp_power_deinit() - turn off regulators and gpios.
|
|
*
|
|
* @power: instance of power module
|
|
* return: 0 for success
|
|
*
|
|
* This API turns off power and regulators.
|
|
*/
|
|
int dp_power_deinit(struct dp_power *power);
|
|
|
|
/**
|
|
* dp_power_clk_status() - display controller clocks status
|
|
*
|
|
* @power: instance of power module
|
|
* @pm_type: type of pm, core/ctrl/phy
|
|
* return: status of power clocks
|
|
*
|
|
* This API return status of DP clocks
|
|
*/
|
|
|
|
int dp_power_clk_status(struct dp_power *dp_power, enum dp_pm_type pm_type);
|
|
|
|
/**
|
|
* dp_power_clk_enable() - enable display controller clocks
|
|
*
|
|
* @power: instance of power module
|
|
* @pm_type: type of pm, core/ctrl/phy
|
|
* @enable: enables or disables
|
|
* return: pointer to allocated power module data
|
|
*
|
|
* This API will call setrate and enable for DP clocks
|
|
*/
|
|
|
|
int dp_power_clk_enable(struct dp_power *power, enum dp_pm_type pm_type,
|
|
bool enable);
|
|
|
|
/**
|
|
* dp_power_client_init() - initialize clock and regulator modules
|
|
*
|
|
* @power: instance of power module
|
|
* return: 0 for success, error for failure.
|
|
*
|
|
* This API will configure the DisplayPort's clocks and regulator
|
|
* modules.
|
|
*/
|
|
int dp_power_client_init(struct dp_power *power);
|
|
|
|
/**
|
|
* dp_power_get() - configure and get the DisplayPort power module data
|
|
*
|
|
* @parser: instance of parser module
|
|
* return: pointer to allocated power module data
|
|
*
|
|
* This API will configure the DisplayPort's power module and provides
|
|
* methods to be called by the client to configure the power related
|
|
* modules.
|
|
*/
|
|
struct dp_power *dp_power_get(struct device *dev, struct dp_parser *parser);
|
|
|
|
#endif /* _DP_POWER_H_ */
|