3e26909b0a
During resume, DP uses AUX to perform various functionalities like DPCD/EDID read or link training etc. This involves other hardware modules as well like USB and Charger. In a situation like continuous suspend/resume, while DP is processing resume, suspend can trigger resulting in dependent hardware modules to go to sleep. As AUX communication is hardware interrupt based, this can result in unstable system. Abort all functionalities before going to suspend to avoid unnecessary AUX and other functionality failures. Change-Id: Id52d408270232adf7258a7eb064ee969eba4be71 Signed-off-by: Sankeerth Billakanti <sbillaka@codeaurora.org> Signed-off-by: Tatenda Chipeperekwa <tatendac@codeaurora.org>
49 lines
1.4 KiB
C
49 lines
1.4 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_CTRL_H_
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#define _DP_CTRL_H_
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#include "dp_aux.h"
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#include "dp_panel.h"
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#include "dp_link.h"
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#include "dp_parser.h"
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#include "dp_power.h"
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#include "dp_catalog.h"
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struct dp_ctrl {
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int (*init)(struct dp_ctrl *dp_ctrl, bool flip, bool reset);
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void (*deinit)(struct dp_ctrl *dp_ctrl);
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int (*on)(struct dp_ctrl *dp_ctrl, bool mst_mode, bool fec_en,
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bool dsc_en, bool shallow);
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void (*off)(struct dp_ctrl *dp_ctrl);
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void (*abort)(struct dp_ctrl *dp_ctrl, bool abort);
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void (*isr)(struct dp_ctrl *dp_ctrl);
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bool (*handle_sink_request)(struct dp_ctrl *dp_ctrl);
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void (*process_phy_test_request)(struct dp_ctrl *dp_ctrl);
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int (*link_maintenance)(struct dp_ctrl *dp_ctrl);
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int (*stream_on)(struct dp_ctrl *dp_ctrl, struct dp_panel *panel);
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void (*stream_off)(struct dp_ctrl *dp_ctrl, struct dp_panel *panel);
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void (*stream_pre_off)(struct dp_ctrl *dp_ctrl, struct dp_panel *panel);
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void (*set_mst_channel_info)(struct dp_ctrl *dp_ctrl,
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enum dp_stream_id strm,
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u32 ch_start_slot, u32 ch_tot_slots);
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};
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struct dp_ctrl_in {
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struct device *dev;
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struct dp_panel *panel;
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struct dp_aux *aux;
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struct dp_link *link;
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struct dp_parser *parser;
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struct dp_power *power;
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struct dp_catalog_ctrl *catalog;
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};
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struct dp_ctrl *dp_ctrl_get(struct dp_ctrl_in *in);
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void dp_ctrl_put(struct dp_ctrl *dp_ctrl);
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#endif /* _DP_CTRL_H_ */
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