4ca56193c5
DP debug module is run by external script for automation testing. DP aux and debug modules operate on shared buffers. In some race conditions, aux and debug module can go out of sync resulting in automation failures. Lock the buffers to make sure there are no race conditions. Change-Id: If0ae370c22cf035f3177666bd714221d6b3cd56e Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>
63 行
1.8 KiB
C
63 行
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2012-2019, The Linux Foundation. All rights reserved.
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*/
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#ifndef _DP_AUX_H_
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#define _DP_AUX_H_
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#include "dp_catalog.h"
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#include "drm_dp_helper.h"
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#define DP_STATE_NOTIFICATION_SENT BIT(0)
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#define DP_STATE_TRAIN_1_STARTED BIT(1)
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#define DP_STATE_TRAIN_1_SUCCEEDED BIT(2)
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#define DP_STATE_TRAIN_1_FAILED BIT(3)
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#define DP_STATE_TRAIN_2_STARTED BIT(4)
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#define DP_STATE_TRAIN_2_SUCCEEDED BIT(5)
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#define DP_STATE_TRAIN_2_FAILED BIT(6)
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#define DP_STATE_CTRL_POWERED_ON BIT(7)
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#define DP_STATE_CTRL_POWERED_OFF BIT(8)
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#define DP_STATE_LINK_MAINTENANCE_STARTED BIT(9)
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#define DP_STATE_LINK_MAINTENANCE_COMPLETED BIT(10)
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#define DP_STATE_LINK_MAINTENANCE_FAILED BIT(11)
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#define DP_STATE_AUX_TIMEOUT BIT(12)
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enum dp_aux_error {
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DP_AUX_ERR_NONE = 0,
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DP_AUX_ERR_ADDR = -1,
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DP_AUX_ERR_TOUT = -2,
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DP_AUX_ERR_NACK = -3,
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DP_AUX_ERR_DEFER = -4,
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DP_AUX_ERR_NACK_DEFER = -5,
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DP_AUX_ERR_PHY = -6,
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};
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struct dp_aux {
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u32 reg;
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u32 size;
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u32 state;
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bool read;
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struct mutex *access_lock;
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struct drm_dp_aux *drm_aux;
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int (*drm_aux_register)(struct dp_aux *aux);
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void (*drm_aux_deregister)(struct dp_aux *aux);
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void (*isr)(struct dp_aux *aux);
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void (*init)(struct dp_aux *aux, struct dp_aux_cfg *aux_cfg);
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void (*deinit)(struct dp_aux *aux);
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void (*reconfig)(struct dp_aux *aux);
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void (*abort)(struct dp_aux *aux);
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void (*dpcd_updated)(struct dp_aux *aux);
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void (*set_sim_mode)(struct dp_aux *aux, bool en, u8 *edid, u8 *dpcd);
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int (*aux_switch)(struct dp_aux *aux, bool enable, int orientation);
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};
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struct dp_aux *dp_aux_get(struct device *dev, struct dp_catalog_aux *catalog,
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struct dp_parser *parser, struct device_node *aux_switch);
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void dp_aux_put(struct dp_aux *aux);
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#endif /*__DP_AUX_H_*/
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