/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright ( c ) 2012 - 2020 , The Linux Foundation . All rights reserved .
*/
#ifndef _DP_LINK_H_
#define _DP_LINK_H_
#include "dp_aux.h"
#include <drm/display/drm_dp_helper.h>
#define DS_PORT_STATUS_CHANGED 0 x200
#define DP_TEST_BIT_DEPTH_UNKNOWN 0 xFFFFFFFF
#define DP_LINK_CAP_ENHANCED_FRAMING (1 << 0 )
struct msm_dp_link_info {
unsigned char revision;
unsigned int rate;
unsigned int num_lanes;
unsigned long capabilities;
};
#define DP_TRAIN_LEVEL_MAX 3
struct msm_dp_link_test_video {
u32 test_video_pattern;
u32 test_bit_depth;
u32 test_dyn_range;
u32 test_h_total;
u32 test_v_total;
u32 test_h_start;
u32 test_v_start;
u32 test_hsync_pol;
u32 test_hsync_width;
u32 test_vsync_pol;
u32 test_vsync_width;
u32 test_h_width;
u32 test_v_height;
u32 test_rr_d;
u32 test_rr_n;
};
struct msm_dp_link_test_audio {
u32 test_audio_sampling_rate;
u32 test_audio_channel_count;
u32 test_audio_pattern_type;
u32 test_audio_period_ch_1;
u32 test_audio_period_ch_2;
u32 test_audio_period_ch_3;
u32 test_audio_period_ch_4;
u32 test_audio_period_ch_5;
u32 test_audio_period_ch_6;
u32 test_audio_period_ch_7;
u32 test_audio_period_ch_8;
};
struct msm_dp_link_phy_params {
u32 phy_test_pattern_sel;
u8 v_level;
u8 p_level;
};
struct msm_dp_link {
u8 lttpr_common_caps[DP_LTTPR_COMMON_CAP_SIZE];
int lttpr_count;
u32 sink_request;
u32 test_response;
u8 sink_count;
struct msm_dp_link_test_video test_video;
struct msm_dp_link_test_audio test_audio;
struct msm_dp_link_phy_params phy_params;
struct msm_dp_link_info link_params;
};
/**
* mdss_dp_test_bit_depth_to_bpp ( ) - convert test bit depth to bpp
* @ tbd : test bit depth
*
* Returns the bits per pixel ( bpp ) to be used corresponding to the
* git bit depth value . This function assumes that bit depth has
* already been validated .
*/
static inline u32 msm_dp_link_bit_depth_to_bpp(u32 tbd)
{
/*
* Few simplistic rules and assumptions made here :
* 1 . Bit depth is per color component
* 2 . If bit depth is unknown return 0
* 3 . Assume 3 color components
*/
switch (tbd) {
case DP_TEST_BIT_DEPTH_6:
return 18 ;
case DP_TEST_BIT_DEPTH_8:
return 24 ;
case DP_TEST_BIT_DEPTH_10:
return 30 ;
case DP_TEST_BIT_DEPTH_UNKNOWN:
default :
return 0 ;
}
}
void msm_dp_link_reset_phy_params_vx_px(struct msm_dp_link *msm_dp_link);
u32 msm_dp_link_get_test_bits_depth(struct msm_dp_link *msm_dp_link, u32 bpp);
int msm_dp_link_process_request(struct msm_dp_link *msm_dp_link);
int msm_dp_link_get_colorimetry_config(struct msm_dp_link *msm_dp_link);
int msm_dp_link_adjust_levels(struct msm_dp_link *msm_dp_link, u8 *link_status);
bool msm_dp_link_send_test_response(struct msm_dp_link *msm_dp_link);
int msm_dp_link_psm_config(struct msm_dp_link *msm_dp_link,
struct msm_dp_link_info *link_info, bool enable);
bool msm_dp_link_send_edid_checksum(struct msm_dp_link *msm_dp_link, u8 checksum);
/**
* msm_dp_link_get ( ) - get the functionalities of dp test module
*
*
* return : a pointer to msm_dp_link struct
*/
struct msm_dp_link *msm_dp_link_get(struct device *dev, struct drm_dp_aux *aux);
#endif /* _DP_LINK_H_ */
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