root/include/drm/bridge/mhl.h

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   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Defines for Mobile High-Definition Link (MHL) interface
   4  *
   5  * Copyright (C) 2015, Samsung Electronics, Co., Ltd.
   6  * Andrzej Hajda <a.hajda@samsung.com>
   7  *
   8  * Based on MHL driver for Android devices.
   9  * Copyright (C) 2013-2014 Silicon Image, Inc.
  10  */
  11 
  12 #ifndef __MHL_H__
  13 #define __MHL_H__
  14 
  15 #include <linux/types.h>
  16 
  17 /* Device Capabilities Registers */
  18 enum {
  19         MHL_DCAP_DEV_STATE,
  20         MHL_DCAP_MHL_VERSION,
  21         MHL_DCAP_CAT,
  22         MHL_DCAP_ADOPTER_ID_H,
  23         MHL_DCAP_ADOPTER_ID_L,
  24         MHL_DCAP_VID_LINK_MODE,
  25         MHL_DCAP_AUD_LINK_MODE,
  26         MHL_DCAP_VIDEO_TYPE,
  27         MHL_DCAP_LOG_DEV_MAP,
  28         MHL_DCAP_BANDWIDTH,
  29         MHL_DCAP_FEATURE_FLAG,
  30         MHL_DCAP_DEVICE_ID_H,
  31         MHL_DCAP_DEVICE_ID_L,
  32         MHL_DCAP_SCRATCHPAD_SIZE,
  33         MHL_DCAP_INT_STAT_SIZE,
  34         MHL_DCAP_RESERVED,
  35         MHL_DCAP_SIZE
  36 };
  37 
  38 #define MHL_DCAP_CAT_SINK                       0x01
  39 #define MHL_DCAP_CAT_SOURCE                     0x02
  40 #define MHL_DCAP_CAT_POWER                      0x10
  41 #define MHL_DCAP_CAT_PLIM(x)                    ((x) << 5)
  42 
  43 #define MHL_DCAP_VID_LINK_RGB444                0x01
  44 #define MHL_DCAP_VID_LINK_YCBCR444              0x02
  45 #define MHL_DCAP_VID_LINK_YCBCR422              0x04
  46 #define MHL_DCAP_VID_LINK_PPIXEL                0x08
  47 #define MHL_DCAP_VID_LINK_ISLANDS               0x10
  48 #define MHL_DCAP_VID_LINK_VGA                   0x20
  49 #define MHL_DCAP_VID_LINK_16BPP                 0x40
  50 
  51 #define MHL_DCAP_AUD_LINK_2CH                   0x01
  52 #define MHL_DCAP_AUD_LINK_8CH                   0x02
  53 
  54 #define MHL_DCAP_VT_GRAPHICS                    0x00
  55 #define MHL_DCAP_VT_PHOTO                       0x02
  56 #define MHL_DCAP_VT_CINEMA                      0x04
  57 #define MHL_DCAP_VT_GAMES                       0x08
  58 #define MHL_DCAP_SUPP_VT                        0x80
  59 
  60 #define MHL_DCAP_LD_DISPLAY                     0x01
  61 #define MHL_DCAP_LD_VIDEO                       0x02
  62 #define MHL_DCAP_LD_AUDIO                       0x04
  63 #define MHL_DCAP_LD_MEDIA                       0x08
  64 #define MHL_DCAP_LD_TUNER                       0x10
  65 #define MHL_DCAP_LD_RECORD                      0x20
  66 #define MHL_DCAP_LD_SPEAKER                     0x40
  67 #define MHL_DCAP_LD_GUI                         0x80
  68 #define MHL_DCAP_LD_ALL                         0xFF
  69 
  70 #define MHL_DCAP_FEATURE_RCP_SUPPORT            0x01
  71 #define MHL_DCAP_FEATURE_RAP_SUPPORT            0x02
  72 #define MHL_DCAP_FEATURE_SP_SUPPORT             0x04
  73 #define MHL_DCAP_FEATURE_UCP_SEND_SUPPOR        0x08
  74 #define MHL_DCAP_FEATURE_UCP_RECV_SUPPORT       0x10
  75 #define MHL_DCAP_FEATURE_RBP_SUPPORT            0x40
  76 
  77 /* Extended Device Capabilities Registers */
  78 enum {
  79         MHL_XDC_ECBUS_SPEEDS,
  80         MHL_XDC_TMDS_SPEEDS,
  81         MHL_XDC_ECBUS_ROLES,
  82         MHL_XDC_LOG_DEV_MAPX,
  83         MHL_XDC_SIZE
  84 };
  85 
  86 #define MHL_XDC_ECBUS_S_075                     0x01
  87 #define MHL_XDC_ECBUS_S_8BIT                    0x02
  88 #define MHL_XDC_ECBUS_S_12BIT                   0x04
  89 #define MHL_XDC_ECBUS_D_150                     0x10
  90 #define MHL_XDC_ECBUS_D_8BIT                    0x20
  91 
  92 #define MHL_XDC_TMDS_000                        0x00
  93 #define MHL_XDC_TMDS_150                        0x01
  94 #define MHL_XDC_TMDS_300                        0x02
  95 #define MHL_XDC_TMDS_600                        0x04
  96 
  97 /* MHL_XDC_ECBUS_ROLES flags */
  98 #define MHL_XDC_DEV_HOST                        0x01
  99 #define MHL_XDC_DEV_DEVICE                      0x02
 100 #define MHL_XDC_DEV_CHARGER                     0x04
 101 #define MHL_XDC_HID_HOST                        0x08
 102 #define MHL_XDC_HID_DEVICE                      0x10
 103 
 104 /* MHL_XDC_LOG_DEV_MAPX flags */
 105 #define MHL_XDC_LD_PHONE                        0x01
 106 
 107 /* Device Status Registers */
 108 enum {
 109         MHL_DST_CONNECTED_RDY,
 110         MHL_DST_LINK_MODE,
 111         MHL_DST_VERSION,
 112         MHL_DST_SIZE
 113 };
 114 
 115 /* Offset of DEVSTAT registers */
 116 #define MHL_DST_OFFSET                          0x30
 117 #define MHL_DST_REG(name) (MHL_DST_OFFSET + MHL_DST_##name)
 118 
 119 #define MHL_DST_CONN_DCAP_RDY                   0x01
 120 #define MHL_DST_CONN_XDEVCAPP_SUPP              0x02
 121 #define MHL_DST_CONN_POW_STAT                   0x04
 122 #define MHL_DST_CONN_PLIM_STAT_MASK             0x38
 123 
 124 #define MHL_DST_LM_CLK_MODE_MASK                0x07
 125 #define MHL_DST_LM_CLK_MODE_PACKED_PIXEL        0x02
 126 #define MHL_DST_LM_CLK_MODE_NORMAL              0x03
 127 #define MHL_DST_LM_PATH_EN_MASK                 0x08
 128 #define MHL_DST_LM_PATH_ENABLED                 0x08
 129 #define MHL_DST_LM_PATH_DISABLED                0x00
 130 #define MHL_DST_LM_MUTED_MASK                   0x10
 131 
 132 /* Extended Device Status Registers */
 133 enum {
 134         MHL_XDS_CURR_ECBUS_MODE,
 135         MHL_XDS_AVLINK_MODE_STATUS,
 136         MHL_XDS_AVLINK_MODE_CONTROL,
 137         MHL_XDS_MULTI_SINK_STATUS,
 138         MHL_XDS_SIZE
 139 };
 140 
 141 /* Offset of XDEVSTAT registers */
 142 #define MHL_XDS_OFFSET                          0x90
 143 #define MHL_XDS_REG(name) (MHL_XDS_OFFSET + MHL_XDS_##name)
 144 
 145 /* MHL_XDS_REG_CURR_ECBUS_MODE flags */
 146 #define MHL_XDS_SLOT_MODE_8BIT                  0x00
 147 #define MHL_XDS_SLOT_MODE_6BIT                  0x01
 148 #define MHL_XDS_ECBUS_S                         0x04
 149 #define MHL_XDS_ECBUS_D                         0x08
 150 
 151 #define MHL_XDS_LINK_CLOCK_75MHZ                0x00
 152 #define MHL_XDS_LINK_CLOCK_150MHZ               0x10
 153 #define MHL_XDS_LINK_CLOCK_300MHZ               0x20
 154 #define MHL_XDS_LINK_CLOCK_600MHZ               0x30
 155 
 156 #define MHL_XDS_LINK_STATUS_NO_SIGNAL           0x00
 157 #define MHL_XDS_LINK_STATUS_CRU_LOCKED          0x01
 158 #define MHL_XDS_LINK_STATUS_TMDS_NORMAL         0x02
 159 #define MHL_XDS_LINK_STATUS_TMDS_RESERVED       0x03
 160 
 161 #define MHL_XDS_LINK_RATE_1_5_GBPS              0x00
 162 #define MHL_XDS_LINK_RATE_3_0_GBPS              0x01
 163 #define MHL_XDS_LINK_RATE_6_0_GBPS              0x02
 164 #define MHL_XDS_ATT_CAPABLE                     0x08
 165 
 166 #define MHL_XDS_SINK_STATUS_1_HPD_LOW           0x00
 167 #define MHL_XDS_SINK_STATUS_1_HPD_HIGH          0x01
 168 #define MHL_XDS_SINK_STATUS_2_HPD_LOW           0x00
 169 #define MHL_XDS_SINK_STATUS_2_HPD_HIGH          0x04
 170 #define MHL_XDS_SINK_STATUS_3_HPD_LOW           0x00
 171 #define MHL_XDS_SINK_STATUS_3_HPD_HIGH          0x10
 172 #define MHL_XDS_SINK_STATUS_4_HPD_LOW           0x00
 173 #define MHL_XDS_SINK_STATUS_4_HPD_HIGH          0x40
 174 
 175 /* Interrupt Registers */
 176 enum {
 177         MHL_INT_RCHANGE,
 178         MHL_INT_DCHANGE,
 179         MHL_INT_SIZE
 180 };
 181 
 182 /* Offset of DEVSTAT registers */
 183 #define MHL_INT_OFFSET                          0x20
 184 #define MHL_INT_REG(name) (MHL_INT_OFFSET + MHL_INT_##name)
 185 
 186 #define MHL_INT_RC_DCAP_CHG                     0x01
 187 #define MHL_INT_RC_DSCR_CHG                     0x02
 188 #define MHL_INT_RC_REQ_WRT                      0x04
 189 #define MHL_INT_RC_GRT_WRT                      0x08
 190 #define MHL_INT_RC_3D_REQ                       0x10
 191 #define MHL_INT_RC_FEAT_REQ                     0x20
 192 #define MHL_INT_RC_FEAT_COMPLETE                0x40
 193 
 194 #define MHL_INT_DC_EDID_CHG                     0x02
 195 
 196 enum {
 197         MHL_ACK = 0x33, /* Command or Data byte acknowledge */
 198         MHL_NACK = 0x34, /* Command or Data byte not acknowledge */
 199         MHL_ABORT = 0x35, /* Transaction abort */
 200         MHL_WRITE_STAT = 0xe0, /* Write one status register */
 201         MHL_SET_INT = 0x60, /* Write one interrupt register */
 202         MHL_READ_DEVCAP_REG = 0x61, /* Read one register */
 203         MHL_GET_STATE = 0x62, /* Read CBUS revision level from follower */
 204         MHL_GET_VENDOR_ID = 0x63, /* Read vendor ID value from follower */
 205         MHL_SET_HPD = 0x64, /* Set Hot Plug Detect in follower */
 206         MHL_CLR_HPD = 0x65, /* Clear Hot Plug Detect in follower */
 207         MHL_SET_CAP_ID = 0x66, /* Set Capture ID for downstream device */
 208         MHL_GET_CAP_ID = 0x67, /* Get Capture ID from downstream device */
 209         MHL_MSC_MSG = 0x68, /* VS command to send RCP sub-commands */
 210         MHL_GET_SC1_ERRORCODE = 0x69, /* Get Vendor-Specific error code */
 211         MHL_GET_DDC_ERRORCODE = 0x6A, /* Get DDC channel command error code */
 212         MHL_GET_MSC_ERRORCODE = 0x6B, /* Get MSC command error code */
 213         MHL_WRITE_BURST = 0x6C, /* Write 1-16 bytes to responder's scratchpad */
 214         MHL_GET_SC3_ERRORCODE = 0x6D, /* Get channel 3 command error code */
 215         MHL_WRITE_XSTAT = 0x70, /* Write one extended status register */
 216         MHL_READ_XDEVCAP_REG = 0x71, /* Read one extended devcap register */
 217         /* let the rest of these float, they are software specific */
 218         MHL_READ_EDID_BLOCK,
 219         MHL_SEND_3D_REQ_OR_FEAT_REQ,
 220         MHL_READ_DEVCAP,
 221         MHL_READ_XDEVCAP
 222 };
 223 
 224 /* MSC message types */
 225 enum {
 226         MHL_MSC_MSG_RCP = 0x10, /* RCP sub-command */
 227         MHL_MSC_MSG_RCPK = 0x11, /* RCP Acknowledge sub-command */
 228         MHL_MSC_MSG_RCPE = 0x12, /* RCP Error sub-command */
 229         MHL_MSC_MSG_RAP = 0x20, /* Mode Change Warning sub-command */
 230         MHL_MSC_MSG_RAPK = 0x21, /* MCW Acknowledge sub-command */
 231         MHL_MSC_MSG_RBP = 0x22, /* Remote Button Protocol sub-command */
 232         MHL_MSC_MSG_RBPK = 0x23, /* RBP Acknowledge sub-command */
 233         MHL_MSC_MSG_RBPE = 0x24, /* RBP Error sub-command */
 234         MHL_MSC_MSG_UCP = 0x30, /* UCP sub-command */
 235         MHL_MSC_MSG_UCPK = 0x31, /* UCP Acknowledge sub-command */
 236         MHL_MSC_MSG_UCPE = 0x32, /* UCP Error sub-command */
 237         MHL_MSC_MSG_RUSB = 0x40, /* Request USB host role */
 238         MHL_MSC_MSG_RUSBK = 0x41, /* Acknowledge request for USB host role */
 239         MHL_MSC_MSG_RHID = 0x42, /* Request HID host role */
 240         MHL_MSC_MSG_RHIDK = 0x43, /* Acknowledge request for HID host role */
 241         MHL_MSC_MSG_ATT = 0x50, /* Request attention sub-command */
 242         MHL_MSC_MSG_ATTK = 0x51, /* ATT Acknowledge sub-command */
 243         MHL_MSC_MSG_BIST_TRIGGER = 0x60,
 244         MHL_MSC_MSG_BIST_REQUEST_STAT = 0x61,
 245         MHL_MSC_MSG_BIST_READY = 0x62,
 246         MHL_MSC_MSG_BIST_STOP = 0x63,
 247 };
 248 
 249 /* RAP action codes */
 250 #define MHL_RAP_POLL            0x00    /* Just do an ack */
 251 #define MHL_RAP_CONTENT_ON      0x10    /* Turn content stream ON */
 252 #define MHL_RAP_CONTENT_OFF     0x11    /* Turn content stream OFF */
 253 #define MHL_RAP_CBUS_MODE_DOWN  0x20
 254 #define MHL_RAP_CBUS_MODE_UP    0x21
 255 
 256 /* RAPK status codes */
 257 #define MHL_RAPK_NO_ERR         0x00    /* RAP action recognized & supported */
 258 #define MHL_RAPK_UNRECOGNIZED   0x01    /* Unknown RAP action code received */
 259 #define MHL_RAPK_UNSUPPORTED    0x02    /* Rcvd RAP action code not supported */
 260 #define MHL_RAPK_BUSY           0x03    /* Responder too busy to respond */
 261 
 262 /* Bit masks for RCP messages */
 263 #define MHL_RCP_KEY_RELEASED_MASK       0x80
 264 #define MHL_RCP_KEY_ID_MASK             0x7F
 265 
 266 /*
 267  * Error status codes for RCPE messages
 268  */
 269 /* No error. (Not allowed in RCPE messages) */
 270 #define MHL_RCPE_STATUS_NO_ERROR                0x00
 271 /* Unsupported/unrecognized key code */
 272 #define MHL_RCPE_STATUS_INEFFECTIVE_KEY_CODE    0x01
 273 /* Responder busy. Initiator may retry message */
 274 #define MHL_RCPE_STATUS_BUSY                    0x02
 275 
 276 /*
 277  * Error status codes for RBPE messages
 278  */
 279 /* No error. (Not allowed in RBPE messages) */
 280 #define MHL_RBPE_STATUS_NO_ERROR                0x00
 281 /* Unsupported/unrecognized button code */
 282 #define MHL_RBPE_STATUS_INEFFECTIVE_BUTTON_CODE 0x01
 283 /* Responder busy. Initiator may retry message */
 284 #define MHL_RBPE_STATUS_BUSY                    0x02
 285 
 286 /*
 287  * Error status codes for UCPE messages
 288  */
 289 /* No error. (Not allowed in UCPE messages) */
 290 #define MHL_UCPE_STATUS_NO_ERROR                0x00
 291 /* Unsupported/unrecognized key code */
 292 #define MHL_UCPE_STATUS_INEFFECTIVE_KEY_CODE    0x01
 293 
 294 enum mhl_burst_id {
 295         MHL_BURST_ID_3D_VIC = 0x10,
 296         MHL_BURST_ID_3D_DTD = 0x11,
 297         MHL_BURST_ID_HEV_VIC = 0x20,
 298         MHL_BURST_ID_HEV_DTDA = 0x21,
 299         MHL_BURST_ID_HEV_DTDB = 0x22,
 300         MHL_BURST_ID_VC_ASSIGN = 0x38,
 301         MHL_BURST_ID_VC_CONFIRM = 0x39,
 302         MHL_BURST_ID_AUD_DELAY = 0x40,
 303         MHL_BURST_ID_ADT_BURSTID = 0x41,
 304         MHL_BURST_ID_BIST_SETUP = 0x51,
 305         MHL_BURST_ID_BIST_RETURN_STAT = 0x52,
 306         MHL_BURST_ID_EMSC_SUPPORT = 0x61,
 307         MHL_BURST_ID_HID_PAYLOAD = 0x62,
 308         MHL_BURST_ID_BLK_RCV_BUFFER_INFO = 0x63,
 309         MHL_BURST_ID_BITS_PER_PIXEL_FMT = 0x64,
 310 };
 311 
 312 struct mhl_burst_blk_rcv_buffer_info {
 313         __be16 id;
 314         __le16 size;
 315 } __packed;
 316 
 317 struct mhl3_burst_header {
 318         __be16 id;
 319         u8 checksum;
 320         u8 total_entries;
 321         u8 sequence_index;
 322 } __packed;
 323 
 324 struct mhl_burst_bits_per_pixel_fmt {
 325         struct mhl3_burst_header hdr;
 326         u8 num_entries;
 327         struct {
 328                 u8 stream_id;
 329                 u8 pixel_format;
 330         } __packed desc[0];
 331 } __packed;
 332 
 333 struct mhl_burst_emsc_support {
 334         struct mhl3_burst_header hdr;
 335         u8 num_entries;
 336         __be16 burst_id[0];
 337 } __packed;
 338 
 339 struct mhl_burst_audio_descr {
 340         struct mhl3_burst_header hdr;
 341         u8 flags;
 342         u8 short_desc[9];
 343 } __packed;
 344 
 345 /*
 346  * MHL3 infoframe related definitions
 347  */
 348 
 349 #define MHL3_IEEE_OUI           0x7ca61d
 350 #define MHL3_INFOFRAME_SIZE     15
 351 
 352 enum mhl3_video_format {
 353         MHL3_VIDEO_FORMAT_NONE,
 354         MHL3_VIDEO_FORMAT_3D,
 355         MHL3_VIDEO_FORMAT_MULTI_VIEW,
 356         MHL3_VIDEO_FORMAT_DUAL_3D
 357 };
 358 
 359 enum mhl3_3d_format_type {
 360         MHL3_3D_FORMAT_TYPE_FS, /* frame sequential */
 361         MHL3_3D_FORMAT_TYPE_TB, /* top-bottom */
 362         MHL3_3D_FORMAT_TYPE_LR, /* left-right */
 363         MHL3_3D_FORMAT_TYPE_FS_TB, /* frame sequential, top-bottom */
 364         MHL3_3D_FORMAT_TYPE_FS_LR, /* frame sequential, left-right */
 365         MHL3_3D_FORMAT_TYPE_TB_LR /* top-bottom, left-right */
 366 };
 367 
 368 struct mhl3_infoframe {
 369         unsigned char version;
 370         enum mhl3_video_format video_format;
 371         enum mhl3_3d_format_type format_type;
 372         bool sep_audio;
 373         int hev_format;
 374         int av_delay;
 375 };
 376 
 377 #endif /* __MHL_H__ */
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