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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2012-2020, The Linux Foundation. All rights reserved.
*/
#ifndef _DP_PANEL_H_
#define _DP_PANEL_H_
#include <drm/msm_drm.h>
#include "dp_aux.h"
#include "dp_link.h"
#include "dp_hpd.h"
struct edid;
#define DPRX_EXTENDED_DPCD_FIELD 0x2200
#define DP_DOWNSTREAM_PORTS 4
#define DP_DOWNSTREAM_CAP_SIZE 4
struct dp_display_mode {
struct drm_display_mode drm_mode;
u32 capabilities;
u32 bpp;
u32 h_active_low;
u32 v_active_low;
};
struct dp_panel_in {
struct device *dev;
struct drm_dp_aux *aux;
struct dp_link *link;
struct dp_catalog *catalog;
};
struct dp_panel {
/* dpcd raw data */
u8 dpcd[DP_RECEIVER_CAP_SIZE + 1];
u8 ds_cap_info[DP_DOWNSTREAM_PORTS * DP_DOWNSTREAM_CAP_SIZE];
u32 ds_port_cnt;
u32 dfp_present;
struct dp_link_info link_info;
struct drm_dp_desc desc;
struct edid *edid;
struct drm_connector *connector;
struct dp_display_mode dp_mode;
bool video_test;
u32 vic;
u32 max_pclk_khz;
u32 max_dp_lanes;
u32 max_bw_code;
};
int dp_panel_init_panel_info(struct dp_panel *dp_panel);
int dp_panel_deinit(struct dp_panel *dp_panel);
int dp_panel_timing_cfg(struct dp_panel *dp_panel);
void dp_panel_dump_regs(struct dp_panel *dp_panel);
int dp_panel_read_sink_caps(struct dp_panel *dp_panel,
struct drm_connector *connector);
u32 dp_panel_get_mode_bpp(struct dp_panel *dp_panel, u32 mode_max_bpp,
u32 mode_pclk_khz);
int dp_panel_get_modes(struct dp_panel *dp_panel,
struct drm_connector *connector, struct dp_display_mode *mode);
void dp_panel_handle_sink_request(struct dp_panel *dp_panel);
void dp_panel_tpg_config(struct dp_panel *dp_panel, bool enable);
/**
* is_link_rate_valid() - validates the link rate
* @lane_rate: link rate requested by the sink
*
* Returns true if the requested link rate is supported.
*/
static inline bool is_link_rate_valid(u32 bw_code)
{
return (bw_code == DP_LINK_BW_1_62 ||
bw_code == DP_LINK_BW_2_7 ||
bw_code == DP_LINK_BW_5_4 ||
bw_code == DP_LINK_BW_8_1);
}
/**
* dp_link_is_lane_count_valid() - validates the lane count
* @lane_count: lane count requested by the sink
*
* Returns true if the requested lane count is supported.
*/
static inline bool is_lane_count_valid(u32 lane_count)
{
return (lane_count == 1 ||
lane_count == 2 ||
lane_count == 4);
}
struct dp_panel *dp_panel_get(struct dp_panel_in *in);
void dp_panel_put(struct dp_panel *dp_panel);
#endif /* _DP_PANEL_H_ */
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