From: Michael Neumann Date: Tue, 24 Feb 2015 10:42:00 +0000 (+0100) Subject: drm: Bring in HDMI code from Linux X-Git-Tag: v4.2.0rc~749 X-Git-Url: https://gitweb.dragonflybsd.org/~tuxillo/dragonfly.git/commitdiff_plain/28ba78090b008cc724894015d12e9a005310923a drm: Bring in HDMI code from Linux Obtained-From: Linux --- diff --git a/sys/dev/drm/drm/Makefile b/sys/dev/drm/drm/Makefile index a76abd5f2a..5342d58d0c 100644 --- a/sys/dev/drm/drm/Makefile +++ b/sys/dev/drm/drm/Makefile @@ -34,6 +34,7 @@ SRCS = \ drm_sysfs.c \ drm_vm.c \ linux_shmem.c \ + linux_hdmi.c \ ttm_lock.c \ ttm_object.c \ ttm_tt.c \ diff --git a/sys/dev/drm/include/linux/hdmi.h b/sys/dev/drm/include/linux/hdmi.h new file mode 100644 index 0000000000..581a108a40 --- /dev/null +++ b/sys/dev/drm/include/linux/hdmi.h @@ -0,0 +1,337 @@ +/* + * Copyright (C) 2012 Avionic Design GmbH + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sub license, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#ifndef __LINUX_HDMI_H_ +#define __LINUX_HDMI_H_ + +#include +#include +#include + +enum hdmi_infoframe_type { + HDMI_INFOFRAME_TYPE_VENDOR = 0x81, + HDMI_INFOFRAME_TYPE_AVI = 0x82, + HDMI_INFOFRAME_TYPE_SPD = 0x83, + HDMI_INFOFRAME_TYPE_AUDIO = 0x84, +}; + +#define HDMI_IEEE_OUI 0x000c03 +#define HDMI_INFOFRAME_HEADER_SIZE 4 +#define HDMI_AVI_INFOFRAME_SIZE 13 +#define HDMI_SPD_INFOFRAME_SIZE 25 +#define HDMI_AUDIO_INFOFRAME_SIZE 10 + +#define HDMI_INFOFRAME_SIZE(type) \ + (HDMI_INFOFRAME_HEADER_SIZE + HDMI_ ## type ## _INFOFRAME_SIZE) + +struct hdmi_any_infoframe { + enum hdmi_infoframe_type type; + unsigned char version; + unsigned char length; +}; + +enum hdmi_colorspace { + HDMI_COLORSPACE_RGB, + HDMI_COLORSPACE_YUV422, + HDMI_COLORSPACE_YUV444, + HDMI_COLORSPACE_YUV420, + HDMI_COLORSPACE_RESERVED4, + HDMI_COLORSPACE_RESERVED5, + HDMI_COLORSPACE_RESERVED6, + HDMI_COLORSPACE_IDO_DEFINED, +}; + +enum hdmi_scan_mode { + HDMI_SCAN_MODE_NONE, + HDMI_SCAN_MODE_OVERSCAN, + HDMI_SCAN_MODE_UNDERSCAN, + HDMI_SCAN_MODE_RESERVED, +}; + +enum hdmi_colorimetry { + HDMI_COLORIMETRY_NONE, + HDMI_COLORIMETRY_ITU_601, + HDMI_COLORIMETRY_ITU_709, + HDMI_COLORIMETRY_EXTENDED, +}; + +enum hdmi_picture_aspect { + HDMI_PICTURE_ASPECT_NONE, + HDMI_PICTURE_ASPECT_4_3, + HDMI_PICTURE_ASPECT_16_9, + HDMI_PICTURE_ASPECT_RESERVED, +}; + +enum hdmi_active_aspect { + HDMI_ACTIVE_ASPECT_16_9_TOP = 2, + HDMI_ACTIVE_ASPECT_14_9_TOP = 3, + HDMI_ACTIVE_ASPECT_16_9_CENTER = 4, + HDMI_ACTIVE_ASPECT_PICTURE = 8, + HDMI_ACTIVE_ASPECT_4_3 = 9, + HDMI_ACTIVE_ASPECT_16_9 = 10, + HDMI_ACTIVE_ASPECT_14_9 = 11, + HDMI_ACTIVE_ASPECT_4_3_SP_14_9 = 13, + HDMI_ACTIVE_ASPECT_16_9_SP_14_9 = 14, + HDMI_ACTIVE_ASPECT_16_9_SP_4_3 = 15, +}; + +enum hdmi_extended_colorimetry { + HDMI_EXTENDED_COLORIMETRY_XV_YCC_601, + HDMI_EXTENDED_COLORIMETRY_XV_YCC_709, + HDMI_EXTENDED_COLORIMETRY_S_YCC_601, + HDMI_EXTENDED_COLORIMETRY_ADOBE_YCC_601, + HDMI_EXTENDED_COLORIMETRY_ADOBE_RGB, + + /* The following EC values are only defined in CEA-861-F. */ + HDMI_EXTENDED_COLORIMETRY_BT2020_CONST_LUM, + HDMI_EXTENDED_COLORIMETRY_BT2020, + HDMI_EXTENDED_COLORIMETRY_RESERVED, +}; + +enum hdmi_quantization_range { + HDMI_QUANTIZATION_RANGE_DEFAULT, + HDMI_QUANTIZATION_RANGE_LIMITED, + HDMI_QUANTIZATION_RANGE_FULL, + HDMI_QUANTIZATION_RANGE_RESERVED, +}; + +/* non-uniform picture scaling */ +enum hdmi_nups { + HDMI_NUPS_UNKNOWN, + HDMI_NUPS_HORIZONTAL, + HDMI_NUPS_VERTICAL, + HDMI_NUPS_BOTH, +}; + +enum hdmi_ycc_quantization_range { + HDMI_YCC_QUANTIZATION_RANGE_LIMITED, + HDMI_YCC_QUANTIZATION_RANGE_FULL, +}; + +enum hdmi_content_type { + HDMI_CONTENT_TYPE_GRAPHICS, + HDMI_CONTENT_TYPE_PHOTO, + HDMI_CONTENT_TYPE_CINEMA, + HDMI_CONTENT_TYPE_GAME, +}; + +struct hdmi_avi_infoframe { + enum hdmi_infoframe_type type; + unsigned char version; + unsigned char length; + enum hdmi_colorspace colorspace; + enum hdmi_scan_mode scan_mode; + enum hdmi_colorimetry colorimetry; + enum hdmi_picture_aspect picture_aspect; + enum hdmi_active_aspect active_aspect; + bool itc; + enum hdmi_extended_colorimetry extended_colorimetry; + enum hdmi_quantization_range quantization_range; + enum hdmi_nups nups; + unsigned char video_code; + enum hdmi_ycc_quantization_range ycc_quantization_range; + enum hdmi_content_type content_type; + unsigned char pixel_repeat; + unsigned short top_bar; + unsigned short bottom_bar; + unsigned short left_bar; + unsigned short right_bar; +}; + +int hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame); +ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame, void *buffer, + size_t size); + +enum hdmi_spd_sdi { + HDMI_SPD_SDI_UNKNOWN, + HDMI_SPD_SDI_DSTB, + HDMI_SPD_SDI_DVDP, + HDMI_SPD_SDI_DVHS, + HDMI_SPD_SDI_HDDVR, + HDMI_SPD_SDI_DVC, + HDMI_SPD_SDI_DSC, + HDMI_SPD_SDI_VCD, + HDMI_SPD_SDI_GAME, + HDMI_SPD_SDI_PC, + HDMI_SPD_SDI_BD, + HDMI_SPD_SDI_SACD, + HDMI_SPD_SDI_HDDVD, + HDMI_SPD_SDI_PMP, +}; + +struct hdmi_spd_infoframe { + enum hdmi_infoframe_type type; + unsigned char version; + unsigned char length; + char vendor[8]; + char product[16]; + enum hdmi_spd_sdi sdi; +}; + +int hdmi_spd_infoframe_init(struct hdmi_spd_infoframe *frame, + const char *vendor, const char *product); +ssize_t hdmi_spd_infoframe_pack(struct hdmi_spd_infoframe *frame, void *buffer, + size_t size); + +enum hdmi_audio_coding_type { + HDMI_AUDIO_CODING_TYPE_STREAM, + HDMI_AUDIO_CODING_TYPE_PCM, + HDMI_AUDIO_CODING_TYPE_AC3, + HDMI_AUDIO_CODING_TYPE_MPEG1, + HDMI_AUDIO_CODING_TYPE_MP3, + HDMI_AUDIO_CODING_TYPE_MPEG2, + HDMI_AUDIO_CODING_TYPE_AAC_LC, + HDMI_AUDIO_CODING_TYPE_DTS, + HDMI_AUDIO_CODING_TYPE_ATRAC, + HDMI_AUDIO_CODING_TYPE_DSD, + HDMI_AUDIO_CODING_TYPE_EAC3, + HDMI_AUDIO_CODING_TYPE_DTS_HD, + HDMI_AUDIO_CODING_TYPE_MLP, + HDMI_AUDIO_CODING_TYPE_DST, + HDMI_AUDIO_CODING_TYPE_WMA_PRO, + HDMI_AUDIO_CODING_TYPE_CXT, +}; + +enum hdmi_audio_sample_size { + HDMI_AUDIO_SAMPLE_SIZE_STREAM, + HDMI_AUDIO_SAMPLE_SIZE_16, + HDMI_AUDIO_SAMPLE_SIZE_20, + HDMI_AUDIO_SAMPLE_SIZE_24, +}; + +enum hdmi_audio_sample_frequency { + HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM, + HDMI_AUDIO_SAMPLE_FREQUENCY_32000, + HDMI_AUDIO_SAMPLE_FREQUENCY_44100, + HDMI_AUDIO_SAMPLE_FREQUENCY_48000, + HDMI_AUDIO_SAMPLE_FREQUENCY_88200, + HDMI_AUDIO_SAMPLE_FREQUENCY_96000, + HDMI_AUDIO_SAMPLE_FREQUENCY_176400, + HDMI_AUDIO_SAMPLE_FREQUENCY_192000, +}; + +enum hdmi_audio_coding_type_ext { + /* Refer to Audio Coding Type (CT) field in Data Byte 1 */ + HDMI_AUDIO_CODING_TYPE_EXT_CT, + + /* + * The next three CXT values are defined in CEA-861-E only. + * They do not exist in older versions, and in CEA-861-F they are + * defined as 'Not in use'. + */ + HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC, + HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC_V2, + HDMI_AUDIO_CODING_TYPE_EXT_MPEG_SURROUND, + + /* The following CXT values are only defined in CEA-861-F. */ + HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC, + HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_V2, + HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC, + HDMI_AUDIO_CODING_TYPE_EXT_DRA, + HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_SURROUND, + HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC_SURROUND = 10, +}; + +struct hdmi_audio_infoframe { + enum hdmi_infoframe_type type; + unsigned char version; + unsigned char length; + unsigned char channels; + enum hdmi_audio_coding_type coding_type; + enum hdmi_audio_sample_size sample_size; + enum hdmi_audio_sample_frequency sample_frequency; + enum hdmi_audio_coding_type_ext coding_type_ext; + unsigned char channel_allocation; + unsigned char level_shift_value; + bool downmix_inhibit; + +}; + +int hdmi_audio_infoframe_init(struct hdmi_audio_infoframe *frame); +ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame, + void *buffer, size_t size); + +enum hdmi_3d_structure { + HDMI_3D_STRUCTURE_INVALID = -1, + HDMI_3D_STRUCTURE_FRAME_PACKING = 0, + HDMI_3D_STRUCTURE_FIELD_ALTERNATIVE, + HDMI_3D_STRUCTURE_LINE_ALTERNATIVE, + HDMI_3D_STRUCTURE_SIDE_BY_SIDE_FULL, + HDMI_3D_STRUCTURE_L_DEPTH, + HDMI_3D_STRUCTURE_L_DEPTH_GFX_GFX_DEPTH, + HDMI_3D_STRUCTURE_TOP_AND_BOTTOM, + HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF = 8, +}; + + +struct hdmi_vendor_infoframe { + enum hdmi_infoframe_type type; + unsigned char version; + unsigned char length; + unsigned int oui; + u8 vic; + enum hdmi_3d_structure s3d_struct; + unsigned int s3d_ext_data; +}; + +int hdmi_vendor_infoframe_init(struct hdmi_vendor_infoframe *frame); +ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame, + void *buffer, size_t size); + +union hdmi_vendor_any_infoframe { + struct { + enum hdmi_infoframe_type type; + unsigned char version; + unsigned char length; + unsigned int oui; + } any; + struct hdmi_vendor_infoframe hdmi; +}; + +/** + * union hdmi_infoframe - overall union of all abstract infoframe representations + * @any: generic infoframe + * @avi: avi infoframe + * @spd: spd infoframe + * @vendor: union of all vendor infoframes + * @audio: audio infoframe + * + * This is used by the generic pack function. This works since all infoframes + * have the same header which also indicates which type of infoframe should be + * packed. + */ +union hdmi_infoframe { + struct hdmi_any_infoframe any; + struct hdmi_avi_infoframe avi; + struct hdmi_spd_infoframe spd; + union hdmi_vendor_any_infoframe vendor; + struct hdmi_audio_infoframe audio; +}; + +ssize_t +hdmi_infoframe_pack(union hdmi_infoframe *frame, void *buffer, size_t size); +int hdmi_infoframe_unpack(union hdmi_infoframe *frame, void *buffer); +void hdmi_infoframe_log(const char *level, struct device *dev, + union hdmi_infoframe *frame); + +#endif /* _DRM_HDMI_H */ diff --git a/sys/dev/drm/linux_hdmi.c b/sys/dev/drm/linux_hdmi.c new file mode 100644 index 0000000000..978138ee48 --- /dev/null +++ b/sys/dev/drm/linux_hdmi.c @@ -0,0 +1,1244 @@ +/* + * Copyright (C) 2012 Avionic Design GmbH + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sub license, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#include +#include +#include +#include +#include +#include +#include + +#define hdmi_log(fmt, ...) dev_printk(level, dev, fmt, ##__VA_ARGS__) + +static u8 hdmi_infoframe_checksum(u8 *ptr, size_t size) +{ + u8 csum = 0; + size_t i; + + /* compute checksum */ + for (i = 0; i < size; i++) + csum += ptr[i]; + + return 256 - csum; +} + +static void hdmi_infoframe_set_checksum(void *buffer, size_t size) +{ + u8 *ptr = buffer; + + ptr[3] = hdmi_infoframe_checksum(buffer, size); +} + +/** + * hdmi_avi_infoframe_init() - initialize an HDMI AVI infoframe + * @frame: HDMI AVI infoframe + * + * Returns 0 on success or a negative error code on failure. + */ +int hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame) +{ + memset(frame, 0, sizeof(*frame)); + + frame->type = HDMI_INFOFRAME_TYPE_AVI; + frame->version = 2; + frame->length = HDMI_AVI_INFOFRAME_SIZE; + + return 0; +} +EXPORT_SYMBOL(hdmi_avi_infoframe_init); + +/** + * hdmi_avi_infoframe_pack() - write HDMI AVI infoframe to binary buffer + * @frame: HDMI AVI infoframe + * @buffer: destination buffer + * @size: size of buffer + * + * Packs the information contained in the @frame structure into a binary + * representation that can be written into the corresponding controller + * registers. Also computes the checksum as required by section 5.3.5 of + * the HDMI 1.4 specification. + * + * Returns the number of bytes packed into the binary buffer or a negative + * error code on failure. + */ +ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame, void *buffer, + size_t size) +{ + u8 *ptr = buffer; + size_t length; + + length = HDMI_INFOFRAME_HEADER_SIZE + frame->length; + + if (size < length) + return -ENOSPC; + + memset(buffer, 0, size); + + ptr[0] = frame->type; + ptr[1] = frame->version; + ptr[2] = frame->length; + ptr[3] = 0; /* checksum */ + + /* start infoframe payload */ + ptr += HDMI_INFOFRAME_HEADER_SIZE; + + ptr[0] = ((frame->colorspace & 0x3) << 5) | (frame->scan_mode & 0x3); + + /* + * Data byte 1, bit 4 has to be set if we provide the active format + * aspect ratio + */ + if (frame->active_aspect & 0xf) + ptr[0] |= BIT(4); + + /* Bit 3 and 2 indicate if we transmit horizontal/vertical bar data */ + if (frame->top_bar || frame->bottom_bar) + ptr[0] |= BIT(3); + + if (frame->left_bar || frame->right_bar) + ptr[0] |= BIT(2); + + ptr[1] = ((frame->colorimetry & 0x3) << 6) | + ((frame->picture_aspect & 0x3) << 4) | + (frame->active_aspect & 0xf); + + ptr[2] = ((frame->extended_colorimetry & 0x7) << 4) | + ((frame->quantization_range & 0x3) << 2) | + (frame->nups & 0x3); + + if (frame->itc) + ptr[2] |= BIT(7); + + ptr[3] = frame->video_code & 0x7f; + + ptr[4] = ((frame->ycc_quantization_range & 0x3) << 6) | + ((frame->content_type & 0x3) << 4) | + (frame->pixel_repeat & 0xf); + + ptr[5] = frame->top_bar & 0xff; + ptr[6] = (frame->top_bar >> 8) & 0xff; + ptr[7] = frame->bottom_bar & 0xff; + ptr[8] = (frame->bottom_bar >> 8) & 0xff; + ptr[9] = frame->left_bar & 0xff; + ptr[10] = (frame->left_bar >> 8) & 0xff; + ptr[11] = frame->right_bar & 0xff; + ptr[12] = (frame->right_bar >> 8) & 0xff; + + hdmi_infoframe_set_checksum(buffer, length); + + return length; +} +EXPORT_SYMBOL(hdmi_avi_infoframe_pack); + +/** + * hdmi_spd_infoframe_init() - initialize an HDMI SPD infoframe + * @frame: HDMI SPD infoframe + * @vendor: vendor string + * @product: product string + * + * Returns 0 on success or a negative error code on failure. + */ +int hdmi_spd_infoframe_init(struct hdmi_spd_infoframe *frame, + const char *vendor, const char *product) +{ + memset(frame, 0, sizeof(*frame)); + + frame->type = HDMI_INFOFRAME_TYPE_SPD; + frame->version = 1; + frame->length = HDMI_SPD_INFOFRAME_SIZE; + + strncpy(frame->vendor, vendor, sizeof(frame->vendor)); + strncpy(frame->product, product, sizeof(frame->product)); + + return 0; +} +EXPORT_SYMBOL(hdmi_spd_infoframe_init); + +/** + * hdmi_spd_infoframe_pack() - write HDMI SPD infoframe to binary buffer + * @frame: HDMI SPD infoframe + * @buffer: destination buffer + * @size: size of buffer + * + * Packs the information contained in the @frame structure into a binary + * representation that can be written into the corresponding controller + * registers. Also computes the checksum as required by section 5.3.5 of + * the HDMI 1.4 specification. + * + * Returns the number of bytes packed into the binary buffer or a negative + * error code on failure. + */ +ssize_t hdmi_spd_infoframe_pack(struct hdmi_spd_infoframe *frame, void *buffer, + size_t size) +{ + u8 *ptr = buffer; + size_t length; + + length = HDMI_INFOFRAME_HEADER_SIZE + frame->length; + + if (size < length) + return -ENOSPC; + + memset(buffer, 0, size); + + ptr[0] = frame->type; + ptr[1] = frame->version; + ptr[2] = frame->length; + ptr[3] = 0; /* checksum */ + + /* start infoframe payload */ + ptr += HDMI_INFOFRAME_HEADER_SIZE; + + memcpy(ptr, frame->vendor, sizeof(frame->vendor)); + memcpy(ptr + 8, frame->product, sizeof(frame->product)); + + ptr[24] = frame->sdi; + + hdmi_infoframe_set_checksum(buffer, length); + + return length; +} +EXPORT_SYMBOL(hdmi_spd_infoframe_pack); + +/** + * hdmi_audio_infoframe_init() - initialize an HDMI audio infoframe + * @frame: HDMI audio infoframe + * + * Returns 0 on success or a negative error code on failure. + */ +int hdmi_audio_infoframe_init(struct hdmi_audio_infoframe *frame) +{ + memset(frame, 0, sizeof(*frame)); + + frame->type = HDMI_INFOFRAME_TYPE_AUDIO; + frame->version = 1; + frame->length = HDMI_AUDIO_INFOFRAME_SIZE; + + return 0; +} +EXPORT_SYMBOL(hdmi_audio_infoframe_init); + +/** + * hdmi_audio_infoframe_pack() - write HDMI audio infoframe to binary buffer + * @frame: HDMI audio infoframe + * @buffer: destination buffer + * @size: size of buffer + * + * Packs the information contained in the @frame structure into a binary + * representation that can be written into the corresponding controller + * registers. Also computes the checksum as required by section 5.3.5 of + * the HDMI 1.4 specification. + * + * Returns the number of bytes packed into the binary buffer or a negative + * error code on failure. + */ +ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame, + void *buffer, size_t size) +{ + unsigned char channels; + u8 *ptr = buffer; + size_t length; + + length = HDMI_INFOFRAME_HEADER_SIZE + frame->length; + + if (size < length) + return -ENOSPC; + + memset(buffer, 0, size); + + if (frame->channels >= 2) + channels = frame->channels - 1; + else + channels = 0; + + ptr[0] = frame->type; + ptr[1] = frame->version; + ptr[2] = frame->length; + ptr[3] = 0; /* checksum */ + + /* start infoframe payload */ + ptr += HDMI_INFOFRAME_HEADER_SIZE; + + ptr[0] = ((frame->coding_type & 0xf) << 4) | (channels & 0x7); + ptr[1] = ((frame->sample_frequency & 0x7) << 2) | + (frame->sample_size & 0x3); + ptr[2] = frame->coding_type_ext & 0x1f; + ptr[3] = frame->channel_allocation; + ptr[4] = (frame->level_shift_value & 0xf) << 3; + + if (frame->downmix_inhibit) + ptr[4] |= BIT(7); + + hdmi_infoframe_set_checksum(buffer, length); + + return length; +} +EXPORT_SYMBOL(hdmi_audio_infoframe_pack); + +/** + * hdmi_vendor_infoframe_init() - initialize an HDMI vendor infoframe + * @frame: HDMI vendor infoframe + * + * Returns 0 on success or a negative error code on failure. + */ +int hdmi_vendor_infoframe_init(struct hdmi_vendor_infoframe *frame) +{ + memset(frame, 0, sizeof(*frame)); + + frame->type = HDMI_INFOFRAME_TYPE_VENDOR; + frame->version = 1; + + frame->oui = HDMI_IEEE_OUI; + + /* + * 0 is a valid value for s3d_struct, so we use a special "not set" + * value + */ + frame->s3d_struct = HDMI_3D_STRUCTURE_INVALID; + + return 0; +} +EXPORT_SYMBOL(hdmi_vendor_infoframe_init); + +/** + * hdmi_vendor_infoframe_pack() - write a HDMI vendor infoframe to binary buffer + * @frame: HDMI infoframe + * @buffer: destination buffer + * @size: size of buffer + * + * Packs the information contained in the @frame structure into a binary + * representation that can be written into the corresponding controller + * registers. Also computes the checksum as required by section 5.3.5 of + * the HDMI 1.4 specification. + * + * Returns the number of bytes packed into the binary buffer or a negative + * error code on failure. + */ +ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame, + void *buffer, size_t size) +{ + u8 *ptr = buffer; + size_t length; + + /* empty info frame */ + if (frame->vic == 0 && frame->s3d_struct == HDMI_3D_STRUCTURE_INVALID) + return -EINVAL; + + /* only one of those can be supplied */ + if (frame->vic != 0 && frame->s3d_struct != HDMI_3D_STRUCTURE_INVALID) + return -EINVAL; + + /* for side by side (half) we also need to provide 3D_Ext_Data */ + if (frame->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF) + frame->length = 6; + else + frame->length = 5; + + length = HDMI_INFOFRAME_HEADER_SIZE + frame->length; + + if (size < length) + return -ENOSPC; + + memset(buffer, 0, size); + + ptr[0] = frame->type; + ptr[1] = frame->version; + ptr[2] = frame->length; + ptr[3] = 0; /* checksum */ + + /* HDMI OUI */ + ptr[4] = 0x03; + ptr[5] = 0x0c; + ptr[6] = 0x00; + + if (frame->vic) { + ptr[7] = 0x1 << 5; /* video format */ + ptr[8] = frame->vic; + } else { + ptr[7] = 0x2 << 5; /* video format */ + ptr[8] = (frame->s3d_struct & 0xf) << 4; + if (frame->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF) + ptr[9] = (frame->s3d_ext_data & 0xf) << 4; + } + + hdmi_infoframe_set_checksum(buffer, length); + + return length; +} +EXPORT_SYMBOL(hdmi_vendor_infoframe_pack); + +/* + * hdmi_vendor_any_infoframe_pack() - write a vendor infoframe to binary buffer + */ +static ssize_t +hdmi_vendor_any_infoframe_pack(union hdmi_vendor_any_infoframe *frame, + void *buffer, size_t size) +{ + /* we only know about HDMI vendor infoframes */ + if (frame->any.oui != HDMI_IEEE_OUI) + return -EINVAL; + + return hdmi_vendor_infoframe_pack(&frame->hdmi, buffer, size); +} + +/** + * hdmi_infoframe_pack() - write a HDMI infoframe to binary buffer + * @frame: HDMI infoframe + * @buffer: destination buffer + * @size: size of buffer + * + * Packs the information contained in the @frame structure into a binary + * representation that can be written into the corresponding controller + * registers. Also computes the checksum as required by section 5.3.5 of + * the HDMI 1.4 specification. + * + * Returns the number of bytes packed into the binary buffer or a negative + * error code on failure. + */ +ssize_t +hdmi_infoframe_pack(union hdmi_infoframe *frame, void *buffer, size_t size) +{ + ssize_t length; + + switch (frame->any.type) { + case HDMI_INFOFRAME_TYPE_AVI: + length = hdmi_avi_infoframe_pack(&frame->avi, buffer, size); + break; + case HDMI_INFOFRAME_TYPE_SPD: + length = hdmi_spd_infoframe_pack(&frame->spd, buffer, size); + break; + case HDMI_INFOFRAME_TYPE_AUDIO: + length = hdmi_audio_infoframe_pack(&frame->audio, buffer, size); + break; + case HDMI_INFOFRAME_TYPE_VENDOR: + length = hdmi_vendor_any_infoframe_pack(&frame->vendor, + buffer, size); + break; + default: + WARN(1, "Bad infoframe type %d\n", frame->any.type); + length = -EINVAL; + } + + return length; +} +EXPORT_SYMBOL(hdmi_infoframe_pack); + +static const char *hdmi_infoframe_type_get_name(enum hdmi_infoframe_type type) +{ + if (type < 0x80 || type > 0x9f) + return "Invalid"; + switch (type) { + case HDMI_INFOFRAME_TYPE_VENDOR: + return "Vendor"; + case HDMI_INFOFRAME_TYPE_AVI: + return "Auxiliary Video Information (AVI)"; + case HDMI_INFOFRAME_TYPE_SPD: + return "Source Product Description (SPD)"; + case HDMI_INFOFRAME_TYPE_AUDIO: + return "Audio"; + } + return "Reserved"; +} + +static void hdmi_infoframe_log_header(const char *level, + struct device *dev, + struct hdmi_any_infoframe *frame) +{ + hdmi_log("HDMI infoframe: %s, version %u, length %u\n", + hdmi_infoframe_type_get_name(frame->type), + frame->version, frame->length); +} + +static const char *hdmi_colorspace_get_name(enum hdmi_colorspace colorspace) +{ + switch (colorspace) { + case HDMI_COLORSPACE_RGB: + return "RGB"; + case HDMI_COLORSPACE_YUV422: + return "YCbCr 4:2:2"; + case HDMI_COLORSPACE_YUV444: + return "YCbCr 4:4:4"; + case HDMI_COLORSPACE_YUV420: + return "YCbCr 4:2:0"; + case HDMI_COLORSPACE_RESERVED4: + return "Reserved (4)"; + case HDMI_COLORSPACE_RESERVED5: + return "Reserved (5)"; + case HDMI_COLORSPACE_RESERVED6: + return "Reserved (6)"; + case HDMI_COLORSPACE_IDO_DEFINED: + return "IDO Defined"; + } + return "Invalid"; +} + +static const char *hdmi_scan_mode_get_name(enum hdmi_scan_mode scan_mode) +{ + switch (scan_mode) { + case HDMI_SCAN_MODE_NONE: + return "No Data"; + case HDMI_SCAN_MODE_OVERSCAN: + return "Overscan"; + case HDMI_SCAN_MODE_UNDERSCAN: + return "Underscan"; + case HDMI_SCAN_MODE_RESERVED: + return "Reserved"; + } + return "Invalid"; +} + +static const char *hdmi_colorimetry_get_name(enum hdmi_colorimetry colorimetry) +{ + switch (colorimetry) { + case HDMI_COLORIMETRY_NONE: + return "No Data"; + case HDMI_COLORIMETRY_ITU_601: + return "ITU601"; + case HDMI_COLORIMETRY_ITU_709: + return "ITU709"; + case HDMI_COLORIMETRY_EXTENDED: + return "Extended"; + } + return "Invalid"; +} + +static const char * +hdmi_picture_aspect_get_name(enum hdmi_picture_aspect picture_aspect) +{ + switch (picture_aspect) { + case HDMI_PICTURE_ASPECT_NONE: + return "No Data"; + case HDMI_PICTURE_ASPECT_4_3: + return "4:3"; + case HDMI_PICTURE_ASPECT_16_9: + return "16:9"; + case HDMI_PICTURE_ASPECT_RESERVED: + return "Reserved"; + } + return "Invalid"; +} + +static const char * +hdmi_active_aspect_get_name(enum hdmi_active_aspect active_aspect) +{ + if (active_aspect < 0 || active_aspect > 0xf) + return "Invalid"; + + switch (active_aspect) { + case HDMI_ACTIVE_ASPECT_16_9_TOP: + return "16:9 Top"; + case HDMI_ACTIVE_ASPECT_14_9_TOP: + return "14:9 Top"; + case HDMI_ACTIVE_ASPECT_16_9_CENTER: + return "16:9 Center"; + case HDMI_ACTIVE_ASPECT_PICTURE: + return "Same as Picture"; + case HDMI_ACTIVE_ASPECT_4_3: + return "4:3"; + case HDMI_ACTIVE_ASPECT_16_9: + return "16:9"; + case HDMI_ACTIVE_ASPECT_14_9: + return "14:9"; + case HDMI_ACTIVE_ASPECT_4_3_SP_14_9: + return "4:3 SP 14:9"; + case HDMI_ACTIVE_ASPECT_16_9_SP_14_9: + return "16:9 SP 14:9"; + case HDMI_ACTIVE_ASPECT_16_9_SP_4_3: + return "16:9 SP 4:3"; + } + return "Reserved"; +} + +static const char * +hdmi_extended_colorimetry_get_name(enum hdmi_extended_colorimetry ext_col) +{ + switch (ext_col) { + case HDMI_EXTENDED_COLORIMETRY_XV_YCC_601: + return "xvYCC 601"; + case HDMI_EXTENDED_COLORIMETRY_XV_YCC_709: + return "xvYCC 709"; + case HDMI_EXTENDED_COLORIMETRY_S_YCC_601: + return "sYCC 601"; + case HDMI_EXTENDED_COLORIMETRY_ADOBE_YCC_601: + return "Adobe YCC 601"; + case HDMI_EXTENDED_COLORIMETRY_ADOBE_RGB: + return "Adobe RGB"; + case HDMI_EXTENDED_COLORIMETRY_BT2020_CONST_LUM: + return "BT.2020 Constant Luminance"; + case HDMI_EXTENDED_COLORIMETRY_BT2020: + return "BT.2020"; + case HDMI_EXTENDED_COLORIMETRY_RESERVED: + return "Reserved"; + } + return "Invalid"; +} + +static const char * +hdmi_quantization_range_get_name(enum hdmi_quantization_range qrange) +{ + switch (qrange) { + case HDMI_QUANTIZATION_RANGE_DEFAULT: + return "Default"; + case HDMI_QUANTIZATION_RANGE_LIMITED: + return "Limited"; + case HDMI_QUANTIZATION_RANGE_FULL: + return "Full"; + case HDMI_QUANTIZATION_RANGE_RESERVED: + return "Reserved"; + } + return "Invalid"; +} + +static const char *hdmi_nups_get_name(enum hdmi_nups nups) +{ + switch (nups) { + case HDMI_NUPS_UNKNOWN: + return "Unknown Non-uniform Scaling"; + case HDMI_NUPS_HORIZONTAL: + return "Horizontally Scaled"; + case HDMI_NUPS_VERTICAL: + return "Vertically Scaled"; + case HDMI_NUPS_BOTH: + return "Horizontally and Vertically Scaled"; + } + return "Invalid"; +} + +static const char * +hdmi_ycc_quantization_range_get_name(enum hdmi_ycc_quantization_range qrange) +{ + switch (qrange) { + case HDMI_YCC_QUANTIZATION_RANGE_LIMITED: + return "Limited"; + case HDMI_YCC_QUANTIZATION_RANGE_FULL: + return "Full"; + } + return "Invalid"; +} + +static const char * +hdmi_content_type_get_name(enum hdmi_content_type content_type) +{ + switch (content_type) { + case HDMI_CONTENT_TYPE_GRAPHICS: + return "Graphics"; + case HDMI_CONTENT_TYPE_PHOTO: + return "Photo"; + case HDMI_CONTENT_TYPE_CINEMA: + return "Cinema"; + case HDMI_CONTENT_TYPE_GAME: + return "Game"; + } + return "Invalid"; +} + +/** + * hdmi_avi_infoframe_log() - log info of HDMI AVI infoframe + * @level: logging level + * @dev: device + * @frame: HDMI AVI infoframe + */ +static void hdmi_avi_infoframe_log(const char *level, + struct device *dev, + struct hdmi_avi_infoframe *frame) +{ + hdmi_infoframe_log_header(level, dev, + (struct hdmi_any_infoframe *)frame); + + hdmi_log(" colorspace: %s\n", + hdmi_colorspace_get_name(frame->colorspace)); + hdmi_log(" scan mode: %s\n", + hdmi_scan_mode_get_name(frame->scan_mode)); + hdmi_log(" colorimetry: %s\n", + hdmi_colorimetry_get_name(frame->colorimetry)); + hdmi_log(" picture aspect: %s\n", + hdmi_picture_aspect_get_name(frame->picture_aspect)); + hdmi_log(" active aspect: %s\n", + hdmi_active_aspect_get_name(frame->active_aspect)); + hdmi_log(" itc: %s\n", frame->itc ? "IT Content" : "No Data"); + hdmi_log(" extended colorimetry: %s\n", + hdmi_extended_colorimetry_get_name(frame->extended_colorimetry)); + hdmi_log(" quantization range: %s\n", + hdmi_quantization_range_get_name(frame->quantization_range)); + hdmi_log(" nups: %s\n", hdmi_nups_get_name(frame->nups)); + hdmi_log(" video code: %u\n", frame->video_code); + hdmi_log(" ycc quantization range: %s\n", + hdmi_ycc_quantization_range_get_name(frame->ycc_quantization_range)); + hdmi_log(" hdmi content type: %s\n", + hdmi_content_type_get_name(frame->content_type)); + hdmi_log(" pixel repeat: %u\n", frame->pixel_repeat); + hdmi_log(" bar top %u, bottom %u, left %u, right %u\n", + frame->top_bar, frame->bottom_bar, + frame->left_bar, frame->right_bar); +} + +static const char *hdmi_spd_sdi_get_name(enum hdmi_spd_sdi sdi) +{ + if (sdi < 0 || sdi > 0xff) + return "Invalid"; + switch (sdi) { + case HDMI_SPD_SDI_UNKNOWN: + return "Unknown"; + case HDMI_SPD_SDI_DSTB: + return "Digital STB"; + case HDMI_SPD_SDI_DVDP: + return "DVD Player"; + case HDMI_SPD_SDI_DVHS: + return "D-VHS"; + case HDMI_SPD_SDI_HDDVR: + return "HDD Videorecorder"; + case HDMI_SPD_SDI_DVC: + return "DVC"; + case HDMI_SPD_SDI_DSC: + return "DSC"; + case HDMI_SPD_SDI_VCD: + return "Video CD"; + case HDMI_SPD_SDI_GAME: + return "Game"; + case HDMI_SPD_SDI_PC: + return "PC General"; + case HDMI_SPD_SDI_BD: + return "Blu-Ray Disc (BD)"; + case HDMI_SPD_SDI_SACD: + return "Super Audio CD"; + case HDMI_SPD_SDI_HDDVD: + return "HD DVD"; + case HDMI_SPD_SDI_PMP: + return "PMP"; + } + return "Reserved"; +} + +/** + * hdmi_spd_infoframe_log() - log info of HDMI SPD infoframe + * @level: logging level + * @dev: device + * @frame: HDMI SPD infoframe + */ +static void hdmi_spd_infoframe_log(const char *level, + struct device *dev, + struct hdmi_spd_infoframe *frame) +{ + u8 buf[17]; + + hdmi_infoframe_log_header(level, dev, + (struct hdmi_any_infoframe *)frame); + + memset(buf, 0, sizeof(buf)); + + strncpy(buf, frame->vendor, 8); + hdmi_log(" vendor: %s\n", buf); + strncpy(buf, frame->product, 16); + hdmi_log(" product: %s\n", buf); + hdmi_log(" source device information: %s (0x%x)\n", + hdmi_spd_sdi_get_name(frame->sdi), frame->sdi); +} + +static const char * +hdmi_audio_coding_type_get_name(enum hdmi_audio_coding_type coding_type) +{ + switch (coding_type) { + case HDMI_AUDIO_CODING_TYPE_STREAM: + return "Refer to Stream Header"; + case HDMI_AUDIO_CODING_TYPE_PCM: + return "PCM"; + case HDMI_AUDIO_CODING_TYPE_AC3: + return "AC-3"; + case HDMI_AUDIO_CODING_TYPE_MPEG1: + return "MPEG1"; + case HDMI_AUDIO_CODING_TYPE_MP3: + return "MP3"; + case HDMI_AUDIO_CODING_TYPE_MPEG2: + return "MPEG2"; + case HDMI_AUDIO_CODING_TYPE_AAC_LC: + return "AAC"; + case HDMI_AUDIO_CODING_TYPE_DTS: + return "DTS"; + case HDMI_AUDIO_CODING_TYPE_ATRAC: + return "ATRAC"; + case HDMI_AUDIO_CODING_TYPE_DSD: + return "One Bit Audio"; + case HDMI_AUDIO_CODING_TYPE_EAC3: + return "Dolby Digital +"; + case HDMI_AUDIO_CODING_TYPE_DTS_HD: + return "DTS-HD"; + case HDMI_AUDIO_CODING_TYPE_MLP: + return "MAT (MLP)"; + case HDMI_AUDIO_CODING_TYPE_DST: + return "DST"; + case HDMI_AUDIO_CODING_TYPE_WMA_PRO: + return "WMA PRO"; + case HDMI_AUDIO_CODING_TYPE_CXT: + return "Refer to CXT"; + } + return "Invalid"; +} + +static const char * +hdmi_audio_sample_size_get_name(enum hdmi_audio_sample_size sample_size) +{ + switch (sample_size) { + case HDMI_AUDIO_SAMPLE_SIZE_STREAM: + return "Refer to Stream Header"; + case HDMI_AUDIO_SAMPLE_SIZE_16: + return "16 bit"; + case HDMI_AUDIO_SAMPLE_SIZE_20: + return "20 bit"; + case HDMI_AUDIO_SAMPLE_SIZE_24: + return "24 bit"; + } + return "Invalid"; +} + +static const char * +hdmi_audio_sample_frequency_get_name(enum hdmi_audio_sample_frequency freq) +{ + switch (freq) { + case HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM: + return "Refer to Stream Header"; + case HDMI_AUDIO_SAMPLE_FREQUENCY_32000: + return "32 kHz"; + case HDMI_AUDIO_SAMPLE_FREQUENCY_44100: + return "44.1 kHz (CD)"; + case HDMI_AUDIO_SAMPLE_FREQUENCY_48000: + return "48 kHz"; + case HDMI_AUDIO_SAMPLE_FREQUENCY_88200: + return "88.2 kHz"; + case HDMI_AUDIO_SAMPLE_FREQUENCY_96000: + return "96 kHz"; + case HDMI_AUDIO_SAMPLE_FREQUENCY_176400: + return "176.4 kHz"; + case HDMI_AUDIO_SAMPLE_FREQUENCY_192000: + return "192 kHz"; + } + return "Invalid"; +} + +static const char * +hdmi_audio_coding_type_ext_get_name(enum hdmi_audio_coding_type_ext ctx) +{ + if (ctx < 0 || ctx > 0x1f) + return "Invalid"; + + switch (ctx) { + case HDMI_AUDIO_CODING_TYPE_EXT_CT: + return "Refer to CT"; + case HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC: + return "HE AAC"; + case HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC_V2: + return "HE AAC v2"; + case HDMI_AUDIO_CODING_TYPE_EXT_MPEG_SURROUND: + return "MPEG SURROUND"; + case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC: + return "MPEG-4 HE AAC"; + case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_V2: + return "MPEG-4 HE AAC v2"; + case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC: + return "MPEG-4 AAC LC"; + case HDMI_AUDIO_CODING_TYPE_EXT_DRA: + return "DRA"; + case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_SURROUND: + return "MPEG-4 HE AAC + MPEG Surround"; + case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC_SURROUND: + return "MPEG-4 AAC LC + MPEG Surround"; + } + return "Reserved"; +} + +/** + * hdmi_audio_infoframe_log() - log info of HDMI AUDIO infoframe + * @level: logging level + * @dev: device + * @frame: HDMI AUDIO infoframe + */ +static void hdmi_audio_infoframe_log(const char *level, + struct device *dev, + struct hdmi_audio_infoframe *frame) +{ + hdmi_infoframe_log_header(level, dev, + (struct hdmi_any_infoframe *)frame); + + if (frame->channels) + hdmi_log(" channels: %u\n", frame->channels - 1); + else + hdmi_log(" channels: Refer to stream header\n"); + hdmi_log(" coding type: %s\n", + hdmi_audio_coding_type_get_name(frame->coding_type)); + hdmi_log(" sample size: %s\n", + hdmi_audio_sample_size_get_name(frame->sample_size)); + hdmi_log(" sample frequency: %s\n", + hdmi_audio_sample_frequency_get_name(frame->sample_frequency)); + hdmi_log(" coding type ext: %s\n", + hdmi_audio_coding_type_ext_get_name(frame->coding_type_ext)); + hdmi_log(" channel allocation: 0x%x\n", + frame->channel_allocation); + hdmi_log(" level shift value: %u dB\n", + frame->level_shift_value); + hdmi_log(" downmix inhibit: %s\n", + frame->downmix_inhibit ? "Yes" : "No"); +} + +static const char * +hdmi_3d_structure_get_name(enum hdmi_3d_structure s3d_struct) +{ + if (s3d_struct < 0 || s3d_struct > 0xf) + return "Invalid"; + + switch (s3d_struct) { + case HDMI_3D_STRUCTURE_FRAME_PACKING: + return "Frame Packing"; + case HDMI_3D_STRUCTURE_FIELD_ALTERNATIVE: + return "Field Alternative"; + case HDMI_3D_STRUCTURE_LINE_ALTERNATIVE: + return "Line Alternative"; + case HDMI_3D_STRUCTURE_SIDE_BY_SIDE_FULL: + return "Side-by-side (Full)"; + case HDMI_3D_STRUCTURE_L_DEPTH: + return "L + Depth"; + case HDMI_3D_STRUCTURE_L_DEPTH_GFX_GFX_DEPTH: + return "L + Depth + Graphics + Graphics-depth"; + case HDMI_3D_STRUCTURE_TOP_AND_BOTTOM: + return "Top-and-Bottom"; + case HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF: + return "Side-by-side (Half)"; + default: + break; + } + return "Reserved"; +} + +/** + * hdmi_vendor_infoframe_log() - log info of HDMI VENDOR infoframe + * @level: logging level + * @dev: device + * @frame: HDMI VENDOR infoframe + */ +static void +hdmi_vendor_any_infoframe_log(const char *level, + struct device *dev, + union hdmi_vendor_any_infoframe *frame) +{ + struct hdmi_vendor_infoframe *hvf = &frame->hdmi; + + hdmi_infoframe_log_header(level, dev, + (struct hdmi_any_infoframe *)frame); + + if (frame->any.oui != HDMI_IEEE_OUI) { + hdmi_log(" not a HDMI vendor infoframe\n"); + return; + } + if (hvf->vic == 0 && hvf->s3d_struct == HDMI_3D_STRUCTURE_INVALID) { + hdmi_log(" empty frame\n"); + return; + } + + if (hvf->vic) + hdmi_log(" HDMI VIC: %u\n", hvf->vic); + if (hvf->s3d_struct != HDMI_3D_STRUCTURE_INVALID) { + hdmi_log(" 3D structure: %s\n", + hdmi_3d_structure_get_name(hvf->s3d_struct)); + if (hvf->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF) + hdmi_log(" 3D extension data: %d\n", + hvf->s3d_ext_data); + } +} + +/** + * hdmi_infoframe_log() - log info of HDMI infoframe + * @level: logging level + * @dev: device + * @frame: HDMI infoframe + */ +void hdmi_infoframe_log(const char *level, + struct device *dev, + union hdmi_infoframe *frame) +{ + switch (frame->any.type) { + case HDMI_INFOFRAME_TYPE_AVI: + hdmi_avi_infoframe_log(level, dev, &frame->avi); + break; + case HDMI_INFOFRAME_TYPE_SPD: + hdmi_spd_infoframe_log(level, dev, &frame->spd); + break; + case HDMI_INFOFRAME_TYPE_AUDIO: + hdmi_audio_infoframe_log(level, dev, &frame->audio); + break; + case HDMI_INFOFRAME_TYPE_VENDOR: + hdmi_vendor_any_infoframe_log(level, dev, &frame->vendor); + break; + } +} +EXPORT_SYMBOL(hdmi_infoframe_log); + +/** + * hdmi_avi_infoframe_unpack() - unpack binary buffer to a HDMI AVI infoframe + * @buffer: source buffer + * @frame: HDMI AVI infoframe + * + * Unpacks the information contained in binary @buffer into a structured + * @frame of the HDMI Auxiliary Video (AVI) information frame. + * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4 + * specification. + * + * Returns 0 on success or a negative error code on failure. + */ +static int hdmi_avi_infoframe_unpack(struct hdmi_avi_infoframe *frame, + void *buffer) +{ + u8 *ptr = buffer; + int ret; + + if (ptr[0] != HDMI_INFOFRAME_TYPE_AVI || + ptr[1] != 2 || + ptr[2] != HDMI_AVI_INFOFRAME_SIZE) + return -EINVAL; + + if (hdmi_infoframe_checksum(buffer, HDMI_INFOFRAME_SIZE(AVI)) != 0) + return -EINVAL; + + ret = hdmi_avi_infoframe_init(frame); + if (ret) + return ret; + + ptr += HDMI_INFOFRAME_HEADER_SIZE; + + frame->colorspace = (ptr[0] >> 5) & 0x3; + if (ptr[0] & 0x10) + frame->active_aspect = ptr[1] & 0xf; + if (ptr[0] & 0x8) { + frame->top_bar = (ptr[5] << 8) + ptr[6]; + frame->bottom_bar = (ptr[7] << 8) + ptr[8]; + } + if (ptr[0] & 0x4) { + frame->left_bar = (ptr[9] << 8) + ptr[10]; + frame->right_bar = (ptr[11] << 8) + ptr[12]; + } + frame->scan_mode = ptr[0] & 0x3; + + frame->colorimetry = (ptr[1] >> 6) & 0x3; + frame->picture_aspect = (ptr[1] >> 4) & 0x3; + frame->active_aspect = ptr[1] & 0xf; + + frame->itc = ptr[2] & 0x80 ? true : false; + frame->extended_colorimetry = (ptr[2] >> 4) & 0x7; + frame->quantization_range = (ptr[2] >> 2) & 0x3; + frame->nups = ptr[2] & 0x3; + + frame->video_code = ptr[3] & 0x7f; + frame->ycc_quantization_range = (ptr[4] >> 6) & 0x3; + frame->content_type = (ptr[4] >> 4) & 0x3; + + frame->pixel_repeat = ptr[4] & 0xf; + + return 0; +} + +/** + * hdmi_spd_infoframe_unpack() - unpack binary buffer to a HDMI SPD infoframe + * @buffer: source buffer + * @frame: HDMI SPD infoframe + * + * Unpacks the information contained in binary @buffer into a structured + * @frame of the HDMI Source Product Description (SPD) information frame. + * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4 + * specification. + * + * Returns 0 on success or a negative error code on failure. + */ +static int hdmi_spd_infoframe_unpack(struct hdmi_spd_infoframe *frame, + void *buffer) +{ + u8 *ptr = buffer; + int ret; + + if (ptr[0] != HDMI_INFOFRAME_TYPE_SPD || + ptr[1] != 1 || + ptr[2] != HDMI_SPD_INFOFRAME_SIZE) { + return -EINVAL; + } + + if (hdmi_infoframe_checksum(buffer, HDMI_INFOFRAME_SIZE(SPD)) != 0) + return -EINVAL; + + ptr += HDMI_INFOFRAME_HEADER_SIZE; + + ret = hdmi_spd_infoframe_init(frame, ptr, ptr + 8); + if (ret) + return ret; + + frame->sdi = ptr[24]; + + return 0; +} + +/** + * hdmi_audio_infoframe_unpack() - unpack binary buffer to a HDMI AUDIO infoframe + * @buffer: source buffer + * @frame: HDMI Audio infoframe + * + * Unpacks the information contained in binary @buffer into a structured + * @frame of the HDMI Audio information frame. + * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4 + * specification. + * + * Returns 0 on success or a negative error code on failure. + */ +static int hdmi_audio_infoframe_unpack(struct hdmi_audio_infoframe *frame, + void *buffer) +{ + u8 *ptr = buffer; + int ret; + + if (ptr[0] != HDMI_INFOFRAME_TYPE_AUDIO || + ptr[1] != 1 || + ptr[2] != HDMI_AUDIO_INFOFRAME_SIZE) { + return -EINVAL; + } + + if (hdmi_infoframe_checksum(buffer, HDMI_INFOFRAME_SIZE(AUDIO)) != 0) + return -EINVAL; + + ret = hdmi_audio_infoframe_init(frame); + if (ret) + return ret; + + ptr += HDMI_INFOFRAME_HEADER_SIZE; + + frame->channels = ptr[0] & 0x7; + frame->coding_type = (ptr[0] >> 4) & 0xf; + frame->sample_size = ptr[1] & 0x3; + frame->sample_frequency = (ptr[1] >> 2) & 0x7; + frame->coding_type_ext = ptr[2] & 0x1f; + frame->channel_allocation = ptr[3]; + frame->level_shift_value = (ptr[4] >> 3) & 0xf; + frame->downmix_inhibit = ptr[4] & 0x80 ? true : false; + + return 0; +} + +/** + * hdmi_vendor_infoframe_unpack() - unpack binary buffer to a HDMI vendor infoframe + * @buffer: source buffer + * @frame: HDMI Vendor infoframe + * + * Unpacks the information contained in binary @buffer into a structured + * @frame of the HDMI Vendor information frame. + * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4 + * specification. + * + * Returns 0 on success or a negative error code on failure. + */ +static int +hdmi_vendor_any_infoframe_unpack(union hdmi_vendor_any_infoframe *frame, + void *buffer) +{ + u8 *ptr = buffer; + size_t length; + int ret; + u8 hdmi_video_format; + struct hdmi_vendor_infoframe *hvf = &frame->hdmi; + + if (ptr[0] != HDMI_INFOFRAME_TYPE_VENDOR || + ptr[1] != 1 || + (ptr[2] != 5 && ptr[2] != 6)) + return -EINVAL; + + length = ptr[2]; + + if (hdmi_infoframe_checksum(buffer, + HDMI_INFOFRAME_HEADER_SIZE + length) != 0) + return -EINVAL; + + ptr += HDMI_INFOFRAME_HEADER_SIZE; + + /* HDMI OUI */ + if ((ptr[0] != 0x03) || + (ptr[1] != 0x0c) || + (ptr[2] != 0x00)) + return -EINVAL; + + hdmi_video_format = ptr[3] >> 5; + + if (hdmi_video_format > 0x2) + return -EINVAL; + + ret = hdmi_vendor_infoframe_init(hvf); + if (ret) + return ret; + + hvf->length = length; + + if (hdmi_video_format == 0x1) { + hvf->vic = ptr[4]; + } else if (hdmi_video_format == 0x2) { + hvf->s3d_struct = ptr[4] >> 4; + if (hvf->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF) { + if (length == 6) + hvf->s3d_ext_data = ptr[5] >> 4; + else + return -EINVAL; + } + } + + return 0; +} + +/** + * hdmi_infoframe_unpack() - unpack binary buffer to a HDMI infoframe + * @buffer: source buffer + * @frame: HDMI infoframe + * + * Unpacks the information contained in binary buffer @buffer into a structured + * @frame of a HDMI infoframe. + * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4 + * specification. + * + * Returns 0 on success or a negative error code on failure. + */ +int hdmi_infoframe_unpack(union hdmi_infoframe *frame, void *buffer) +{ + int ret; + u8 *ptr = buffer; + + switch (ptr[0]) { + case HDMI_INFOFRAME_TYPE_AVI: + ret = hdmi_avi_infoframe_unpack(&frame->avi, buffer); + break; + case HDMI_INFOFRAME_TYPE_SPD: + ret = hdmi_spd_infoframe_unpack(&frame->spd, buffer); + break; + case HDMI_INFOFRAME_TYPE_AUDIO: + ret = hdmi_audio_infoframe_unpack(&frame->audio, buffer); + break; + case HDMI_INFOFRAME_TYPE_VENDOR: + ret = hdmi_vendor_any_infoframe_unpack(&frame->vendor, buffer); + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} +EXPORT_SYMBOL(hdmi_infoframe_unpack);