1// SPDX-License-Identifier: MIT 2 3#include <linux/module.h> 4 5#include <drm/display/drm_hdmi_helper.h> 6#include <drm/drm_connector.h> 7#include <drm/drm_edid.h> 8#include <drm/drm_modes.h> 9#include <drm/drm_print.h> 10#include <drm/drm_property.h> 11 12static inline bool is_eotf_supported(u8 output_eotf, u8 sink_eotf) 13{ 14 return sink_eotf & BIT(output_eotf); 15} 16 17/** 18 * drm_hdmi_infoframe_set_hdr_metadata() - fill an HDMI DRM infoframe with 19 * HDR metadata from userspace 20 * @frame: HDMI DRM infoframe 21 * @conn_state: Connector state containing HDR metadata 22 * 23 * Return: 0 on success or a negative error code on failure. 24 */ 25int drm_hdmi_infoframe_set_hdr_metadata(struct hdmi_drm_infoframe *frame, 26 const struct drm_connector_state *conn_state) 27{ 28 struct drm_connector *connector; 29 struct hdr_output_metadata *hdr_metadata; 30 int err; 31 32 if (!frame || !conn_state) 33 return -EINVAL; 34 35 connector = conn_state->connector; 36 37 if (!conn_state->hdr_output_metadata) 38 return -EINVAL; 39 40 hdr_metadata = conn_state->hdr_output_metadata->data; 41 42 if (!hdr_metadata || !connector) 43 return -EINVAL; 44 45 /* Sink EOTF is Bit map while infoframe is absolute values */ 46 if (!is_eotf_supported(hdr_metadata->hdmi_metadata_type1.eotf, 47 connector->hdr_sink_metadata.hdmi_type1.eotf)) 48 DRM_DEBUG_KMS("Unknown EOTF %d\n", hdr_metadata->hdmi_metadata_type1.eotf); 49 50 err = hdmi_drm_infoframe_init(frame); 51 if (err < 0) 52 return err; 53 54 frame->eotf = hdr_metadata->hdmi_metadata_type1.eotf; 55 frame->metadata_type = hdr_metadata->hdmi_metadata_type1.metadata_type; 56 57 BUILD_BUG_ON(sizeof(frame->display_primaries) != 58 sizeof(hdr_metadata->hdmi_metadata_type1.display_primaries)); 59 BUILD_BUG_ON(sizeof(frame->white_point) != 60 sizeof(hdr_metadata->hdmi_metadata_type1.white_point)); 61 62 memcpy(&frame->display_primaries, 63 &hdr_metadata->hdmi_metadata_type1.display_primaries, 64 sizeof(frame->display_primaries)); 65 66 memcpy(&frame->white_point, 67 &hdr_metadata->hdmi_metadata_type1.white_point, 68 sizeof(frame->white_point)); 69 70 frame->max_display_mastering_luminance = 71 hdr_metadata->hdmi_metadata_type1.max_display_mastering_luminance; 72 frame->min_display_mastering_luminance = 73 hdr_metadata->hdmi_metadata_type1.min_display_mastering_luminance; 74 frame->max_fall = hdr_metadata->hdmi_metadata_type1.max_fall; 75 frame->max_cll = hdr_metadata->hdmi_metadata_type1.max_cll; 76 77 return 0; 78} 79EXPORT_SYMBOL(drm_hdmi_infoframe_set_hdr_metadata); 80 81/* HDMI Colorspace Spec Definitions */ 82#define FULL_COLORIMETRY_MASK 0x1FF 83#define NORMAL_COLORIMETRY_MASK 0x3 84#define EXTENDED_COLORIMETRY_MASK 0x7 85#define EXTENDED_ACE_COLORIMETRY_MASK 0xF 86 87#define C(x) ((x) << 0) 88#define EC(x) ((x) << 2) 89#define ACE(x) ((x) << 5) 90 91#define HDMI_COLORIMETRY_NO_DATA 0x0 92#define HDMI_COLORIMETRY_SMPTE_170M_YCC (C(1) | EC(0) | ACE(0)) 93#define HDMI_COLORIMETRY_BT709_YCC (C(2) | EC(0) | ACE(0)) 94#define HDMI_COLORIMETRY_XVYCC_601 (C(3) | EC(0) | ACE(0)) 95#define HDMI_COLORIMETRY_XVYCC_709 (C(3) | EC(1) | ACE(0)) 96#define HDMI_COLORIMETRY_SYCC_601 (C(3) | EC(2) | ACE(0)) 97#define HDMI_COLORIMETRY_OPYCC_601 (C(3) | EC(3) | ACE(0)) 98#define HDMI_COLORIMETRY_OPRGB (C(3) | EC(4) | ACE(0)) 99#define HDMI_COLORIMETRY_BT2020_CYCC (C(3) | EC(5) | ACE(0)) 100#define HDMI_COLORIMETRY_BT2020_RGB (C(3) | EC(6) | ACE(0)) 101#define HDMI_COLORIMETRY_BT2020_YCC (C(3) | EC(6) | ACE(0)) 102#define HDMI_COLORIMETRY_DCI_P3_RGB_D65 (C(3) | EC(7) | ACE(0)) 103#define HDMI_COLORIMETRY_DCI_P3_RGB_THEATER (C(3) | EC(7) | ACE(1)) 104 105static const u32 hdmi_colorimetry_val[] = { 106 [DRM_MODE_COLORIMETRY_NO_DATA] = HDMI_COLORIMETRY_NO_DATA, 107 [DRM_MODE_COLORIMETRY_SMPTE_170M_YCC] = HDMI_COLORIMETRY_SMPTE_170M_YCC, 108 [DRM_MODE_COLORIMETRY_BT709_YCC] = HDMI_COLORIMETRY_BT709_YCC, 109 [DRM_MODE_COLORIMETRY_XVYCC_601] = HDMI_COLORIMETRY_XVYCC_601, 110 [DRM_MODE_COLORIMETRY_XVYCC_709] = HDMI_COLORIMETRY_XVYCC_709, 111 [DRM_MODE_COLORIMETRY_SYCC_601] = HDMI_COLORIMETRY_SYCC_601, 112 [DRM_MODE_COLORIMETRY_OPYCC_601] = HDMI_COLORIMETRY_OPYCC_601, 113 [DRM_MODE_COLORIMETRY_OPRGB] = HDMI_COLORIMETRY_OPRGB, 114 [DRM_MODE_COLORIMETRY_BT2020_CYCC] = HDMI_COLORIMETRY_BT2020_CYCC, 115 [DRM_MODE_COLORIMETRY_BT2020_RGB] = HDMI_COLORIMETRY_BT2020_RGB, 116 [DRM_MODE_COLORIMETRY_BT2020_YCC] = HDMI_COLORIMETRY_BT2020_YCC, 117}; 118 119#undef C 120#undef EC 121#undef ACE 122 123/** 124 * drm_hdmi_avi_infoframe_colorimetry() - fill the HDMI AVI infoframe 125 * colorimetry information 126 * @frame: HDMI AVI infoframe 127 * @conn_state: connector state 128 */ 129void drm_hdmi_avi_infoframe_colorimetry(struct hdmi_avi_infoframe *frame, 130 const struct drm_connector_state *conn_state) 131{ 132 u32 colorimetry_val; 133 u32 colorimetry_index = conn_state->colorspace & FULL_COLORIMETRY_MASK; 134 135 if (colorimetry_index >= ARRAY_SIZE(hdmi_colorimetry_val)) 136 colorimetry_val = HDMI_COLORIMETRY_NO_DATA; 137 else 138 colorimetry_val = hdmi_colorimetry_val[colorimetry_index]; 139 140 frame->colorimetry = colorimetry_val & NORMAL_COLORIMETRY_MASK; 141 /* 142 * ToDo: Extend it for ACE formats as well. Modify the infoframe 143 * structure and extend it in drivers/video/hdmi 144 */ 145 frame->extended_colorimetry = (colorimetry_val >> 2) & 146 EXTENDED_COLORIMETRY_MASK; 147} 148EXPORT_SYMBOL(drm_hdmi_avi_infoframe_colorimetry); 149 150/** 151 * drm_hdmi_avi_infoframe_bars() - fill the HDMI AVI infoframe 152 * bar information 153 * @frame: HDMI AVI infoframe 154 * @conn_state: connector state 155 */ 156void drm_hdmi_avi_infoframe_bars(struct hdmi_avi_infoframe *frame, 157 const struct drm_connector_state *conn_state) 158{ 159 frame->right_bar = conn_state->tv.margins.right; 160 frame->left_bar = conn_state->tv.margins.left; 161 frame->top_bar = conn_state->tv.margins.top; 162 frame->bottom_bar = conn_state->tv.margins.bottom; 163} 164EXPORT_SYMBOL(drm_hdmi_avi_infoframe_bars); 165 166/** 167 * drm_hdmi_avi_infoframe_content_type() - fill the HDMI AVI infoframe 168 * content type information, based 169 * on correspondent DRM property. 170 * @frame: HDMI AVI infoframe 171 * @conn_state: DRM display connector state 172 * 173 */ 174void drm_hdmi_avi_infoframe_content_type(struct hdmi_avi_infoframe *frame, 175 const struct drm_connector_state *conn_state) 176{ 177 switch (conn_state->content_type) { 178 case DRM_MODE_CONTENT_TYPE_GRAPHICS: 179 frame->content_type = HDMI_CONTENT_TYPE_GRAPHICS; 180 break; 181 case DRM_MODE_CONTENT_TYPE_CINEMA: 182 frame->content_type = HDMI_CONTENT_TYPE_CINEMA; 183 break; 184 case DRM_MODE_CONTENT_TYPE_GAME: 185 frame->content_type = HDMI_CONTENT_TYPE_GAME; 186 break; 187 case DRM_MODE_CONTENT_TYPE_PHOTO: 188 frame->content_type = HDMI_CONTENT_TYPE_PHOTO; 189 break; 190 default: 191 /* Graphics is the default(0) */ 192 frame->content_type = HDMI_CONTENT_TYPE_GRAPHICS; 193 } 194 195 frame->itc = conn_state->content_type != DRM_MODE_CONTENT_TYPE_NO_DATA; 196} 197EXPORT_SYMBOL(drm_hdmi_avi_infoframe_content_type); 198