65534be8da
On hpd low signaling, if MST is enabled, then the dp driver should send the uevent to usermode and wait for the displays to be turned off before destroying the connectors. In the current mst driver, hpd low handling is a monolithic step. This change breaks this into two separate callbacks into the mst driver so the display driver can wait for usermode completion between these two steps. When processing hpd low in sim mode, the mst driver uses the drm framework's the port detection function. When hpd unplug is signaled to the usermode, it checks the port status before disabling it. But since the port hasn't been destroyed yet, the framework reports that the port as still connected. This causes the driver to timeout while waiting for the the displays to be disabled. This change adds a wrapper which will report the port status as disconnected when hpd low is signaled. Change-Id: I1c59a4878018a300f258bd67c36d1cf4eaf5f67b Signed-off-by: Rajkumar Subbiah <rsubbia@codeaurora.org>
160 خطوط
4.7 KiB
C
160 خطوط
4.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
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*/
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#ifndef _DP_DISPLAY_H_
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#define _DP_DISPLAY_H_
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#include <linux/list.h>
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#include <drm/drmP.h>
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#include <drm/sde_drm.h>
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#include "dp_panel.h"
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#define DP_MST_SIM_MAX_PORTS 8
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enum dp_drv_state {
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PM_DEFAULT,
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PM_SUSPEND,
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};
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struct dp_mst_hpd_info {
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bool mst_protocol;
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bool mst_hpd_sim;
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u32 mst_port_cnt;
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u8 *edid;
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bool mst_sim_add_con;
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bool mst_sim_remove_con;
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int mst_sim_remove_con_id;
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};
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struct dp_mst_drm_cbs {
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void (*hpd)(void *display, bool hpd_status);
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void (*hpd_irq)(void *display, struct dp_mst_hpd_info *info);
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void (*set_drv_state)(void *dp_display,
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enum dp_drv_state mst_state);
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int (*set_mgr_state)(void *dp_display, bool state,
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struct dp_mst_hpd_info *info);
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};
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struct dp_mst_drm_install_info {
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void *dp_mst_prv_info;
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const struct dp_mst_drm_cbs *cbs;
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};
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struct dp_mst_caps {
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bool has_mst;
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u32 max_streams_supported;
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u32 max_dpcd_transaction_bytes;
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struct drm_dp_aux *drm_aux;
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};
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struct dp_mst_connector {
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bool debug_en;
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int con_id;
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int hdisplay;
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int vdisplay;
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int vrefresh;
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int aspect_ratio;
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struct drm_connector *conn;
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struct mutex lock;
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struct list_head list;
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enum drm_connector_status state;
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};
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struct dp_display {
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struct drm_device *drm_dev;
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struct dp_bridge *bridge;
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struct drm_connector *base_connector;
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void *base_dp_panel;
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bool is_sst_connected;
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bool is_mst_supported;
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u32 max_pclk_khz;
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void *dp_mst_prv_info;
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u32 max_mixer_count;
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u32 max_dsc_count;
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int (*enable)(struct dp_display *dp_display, void *panel);
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int (*post_enable)(struct dp_display *dp_display, void *panel);
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int (*pre_disable)(struct dp_display *dp_display, void *panel);
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int (*disable)(struct dp_display *dp_display, void *panel);
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int (*set_mode)(struct dp_display *dp_display, void *panel,
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struct dp_display_mode *mode);
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enum drm_mode_status (*validate_mode)(struct dp_display *dp_display,
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void *panel, struct drm_display_mode *mode,
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const struct msm_resource_caps_info *avail_res);
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int (*get_modes)(struct dp_display *dp_display, void *panel,
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struct dp_display_mode *dp_mode);
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int (*prepare)(struct dp_display *dp_display, void *panel);
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int (*unprepare)(struct dp_display *dp_display, void *panel);
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int (*request_irq)(struct dp_display *dp_display);
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struct dp_debug *(*get_debug)(struct dp_display *dp_display);
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void (*post_open)(struct dp_display *dp_display);
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int (*config_hdr)(struct dp_display *dp_display, void *panel,
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struct drm_msm_ext_hdr_metadata *hdr_meta,
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bool dhdr_update);
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int (*set_colorspace)(struct dp_display *dp_display, void *panel,
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u32 colorspace);
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int (*post_init)(struct dp_display *dp_display);
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int (*mst_install)(struct dp_display *dp_display,
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struct dp_mst_drm_install_info *mst_install_info);
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int (*mst_uninstall)(struct dp_display *dp_display);
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int (*mst_connector_install)(struct dp_display *dp_display,
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struct drm_connector *connector);
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int (*mst_connector_uninstall)(struct dp_display *dp_display,
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struct drm_connector *connector);
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int (*mst_connector_update_edid)(struct dp_display *dp_display,
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struct drm_connector *connector,
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struct edid *edid);
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int (*mst_connector_update_link_info)(struct dp_display *dp_display,
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struct drm_connector *connector);
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int (*mst_get_connector_info)(struct dp_display *dp_display,
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struct drm_connector *connector,
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struct dp_mst_connector *mst_conn);
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int (*mst_get_fixed_topology_port)(struct dp_display *dp_display,
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u32 strm_id, u32 *port_num);
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int (*get_mst_caps)(struct dp_display *dp_display,
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struct dp_mst_caps *mst_caps);
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int (*set_stream_info)(struct dp_display *dp_display, void *panel,
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u32 strm_id, u32 start_slot, u32 num_slots, u32 pbn,
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int vcpi);
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void (*convert_to_dp_mode)(struct dp_display *dp_display, void *panel,
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const struct drm_display_mode *drm_mode,
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struct dp_display_mode *dp_mode);
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int (*update_pps)(struct dp_display *dp_display,
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struct drm_connector *connector, char *pps_cmd);
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void (*wakeup_phy_layer)(struct dp_display *dp_display,
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bool wakeup);
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int (*get_available_dp_resources)(struct dp_display *dp_display,
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const struct msm_resource_caps_info *avail_res,
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struct msm_resource_caps_info *max_dp_avail_res);
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};
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#if IS_ENABLED(CONFIG_DRM_MSM_DP)
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int dp_display_get_num_of_displays(void);
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int dp_display_get_displays(void **displays, int count);
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int dp_display_get_num_of_streams(void);
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#else
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static inline int dp_display_get_num_of_displays(void)
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{
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return 0;
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}
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static inline int dp_display_get_displays(void **displays, int count)
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{
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return 0;
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}
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static inline int dp_display_get_num_of_streams(void)
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{
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return 0;
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}
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static inline int dp_connector_update_pps(struct drm_connector *connector,
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char *pps_cmd, void *display)
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{
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return 0;
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}
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#endif /* CONFIG_DRM_MSM_DP */
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#endif /* _DP_DISPLAY_H_ */
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