14e61d16d8
When switching between 2 dongles/adapters it is possible to have the same resolution with different link configuration. Even though the pixel clock could be the same on replug, the vco clock could be different depending on the link configuration. Since the dp driver only exposes limited clocks to the clock framework, in this specific scenario, the clock driver is unable to recognize the change in source clock rate and ends up skipping the clock reconfiguration. This change adds support to park the pixel clocks on disable, thereby forcing a reconfiguration on subsequent replug even if the pixel clocks are the same. Change-Id: If90b37d6285f6cad23cf1c11a7d6ccd6b4cf850c Signed-off-by: Rajkumar Subbiah <quic_rsubbia@quicinc.com>
67 sor
2.3 KiB
C
67 sor
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2012-2021, The Linux Foundation. All rights reserved.
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*/
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#ifndef _DP_POWER_H_
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#define _DP_POWER_H_
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#include "dp_parser.h"
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#include "dp_pll.h"
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#include "sde_power_handle.h"
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/**
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* sruct dp_power - DisplayPort's power related data
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*
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* @init: initializes the regulators/core clocks/GPIOs/pinctrl
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* @deinit: turns off the regulators/core clocks/GPIOs/pinctrl
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* @clk_enable: enable/disable the DP clocks
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* @clk_status: check for clock status
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* @set_pixel_clk_parent: set the parent of DP pixel clock
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* @park_clocks: park all clocks driven by PLL
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* @clk_get_rate: get the current rate for provided clk_name
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* @power_client_init: configures clocks and regulators
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* @power_client_deinit: frees clock and regulator resources
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* @power_mmrm_init: configures mmrm client registration
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*/
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struct dp_power {
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struct drm_device *drm_dev;
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struct sde_power_handle *phandle;
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int (*init)(struct dp_power *power, bool flip);
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int (*deinit)(struct dp_power *power);
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int (*clk_enable)(struct dp_power *power, enum dp_pm_type pm_type,
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bool enable);
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bool (*clk_status)(struct dp_power *power, enum dp_pm_type pm_type);
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int (*set_pixel_clk_parent)(struct dp_power *power, u32 stream_id);
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int (*park_clocks)(struct dp_power *power);
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u64 (*clk_get_rate)(struct dp_power *power, char *clk_name);
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int (*power_client_init)(struct dp_power *power,
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struct sde_power_handle *phandle,
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struct drm_device *drm_dev);
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void (*power_client_deinit)(struct dp_power *power);
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int (*power_mmrm_init)(struct dp_power *power,
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struct sde_power_handle *phandle, void *dp,
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int (*dp_display_mmrm_callback)(struct mmrm_client_notifier_data *notifier_data));
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};
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/**
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* dp_power_get() - configure and get the DisplayPort power module data
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*
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* @parser: instance of parser module
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* @pll: instance of pll module
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* return: pointer to allocated power module data
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*
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* This API will configure the DisplayPort's power module and provides
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* methods to be called by the client to configure the power related
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* modueles.
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*/
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struct dp_power *dp_power_get(struct dp_parser *parser, struct dp_pll *pll);
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/**
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* dp_power_put() - release the power related resources
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*
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* @power: pointer to the power module's data
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*/
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void dp_power_put(struct dp_power *power);
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#endif /* _DP_POWER_H_ */
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