1956 lines
52 KiB
C
1956 lines
52 KiB
C
/*
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* Copyright (C) 2012 Avionic Design GmbH
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sub license,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <drm/display/drm_dp.h>
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#include <linux/bitops.h>
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#include <linux/bug.h>
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#include <linux/errno.h>
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#include <linux/export.h>
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#include <linux/hdmi.h>
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#include <linux/string.h>
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#include <linux/device.h>
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#define hdmi_log(fmt, ...) dev_printk(level, dev, fmt, ##__VA_ARGS__)
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static u8 hdmi_infoframe_checksum(const u8 *ptr, size_t size)
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{
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u8 csum = 0;
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size_t i;
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/* compute checksum */
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for (i = 0; i < size; i++)
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csum += ptr[i];
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return 256 - csum;
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}
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static void hdmi_infoframe_set_checksum(void *buffer, size_t size)
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{
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u8 *ptr = buffer;
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ptr[3] = hdmi_infoframe_checksum(buffer, size);
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}
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/**
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* hdmi_avi_infoframe_init() - initialize an HDMI AVI infoframe
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* @frame: HDMI AVI infoframe
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*/
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void hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame)
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{
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memset(frame, 0, sizeof(*frame));
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frame->type = HDMI_INFOFRAME_TYPE_AVI;
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frame->version = 2;
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frame->length = HDMI_AVI_INFOFRAME_SIZE;
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}
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EXPORT_SYMBOL(hdmi_avi_infoframe_init);
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static int hdmi_avi_infoframe_check_only(const struct hdmi_avi_infoframe *frame)
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{
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if (frame->type != HDMI_INFOFRAME_TYPE_AVI ||
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frame->version != 2 ||
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frame->length != HDMI_AVI_INFOFRAME_SIZE)
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return -EINVAL;
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if (frame->picture_aspect > HDMI_PICTURE_ASPECT_16_9)
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return -EINVAL;
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return 0;
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}
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/**
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* hdmi_avi_infoframe_check() - check a HDMI AVI infoframe
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* @frame: HDMI AVI infoframe
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*
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* Validates that the infoframe is consistent and updates derived fields
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* (eg. length) based on other fields.
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*
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* Returns 0 on success or a negative error code on failure.
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*/
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int hdmi_avi_infoframe_check(struct hdmi_avi_infoframe *frame)
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{
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return hdmi_avi_infoframe_check_only(frame);
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}
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EXPORT_SYMBOL(hdmi_avi_infoframe_check);
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/**
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* hdmi_avi_infoframe_pack_only() - write HDMI AVI infoframe to binary buffer
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* @frame: HDMI AVI infoframe
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* @buffer: destination buffer
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* @size: size of buffer
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*
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* Packs the information contained in the @frame structure into a binary
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* representation that can be written into the corresponding controller
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* registers. Also computes the checksum as required by section 5.3.5 of
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* the HDMI 1.4 specification.
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*
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* Returns the number of bytes packed into the binary buffer or a negative
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* error code on failure.
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*/
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ssize_t hdmi_avi_infoframe_pack_only(const struct hdmi_avi_infoframe *frame,
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void *buffer, size_t size)
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{
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u8 *ptr = buffer;
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size_t length;
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int ret;
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ret = hdmi_avi_infoframe_check_only(frame);
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if (ret)
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return ret;
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length = HDMI_INFOFRAME_HEADER_SIZE + frame->length;
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if (size < length)
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return -ENOSPC;
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memset(buffer, 0, size);
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ptr[0] = frame->type;
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ptr[1] = frame->version;
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ptr[2] = frame->length;
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ptr[3] = 0; /* checksum */
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/* start infoframe payload */
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ptr += HDMI_INFOFRAME_HEADER_SIZE;
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ptr[0] = ((frame->colorspace & 0x3) << 5) | (frame->scan_mode & 0x3);
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/*
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* Data byte 1, bit 4 has to be set if we provide the active format
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* aspect ratio
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*/
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if (frame->active_aspect & 0xf)
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ptr[0] |= BIT(4);
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/* Bit 3 and 2 indicate if we transmit horizontal/vertical bar data */
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if (frame->top_bar || frame->bottom_bar)
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ptr[0] |= BIT(3);
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if (frame->left_bar || frame->right_bar)
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ptr[0] |= BIT(2);
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ptr[1] = ((frame->colorimetry & 0x3) << 6) |
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((frame->picture_aspect & 0x3) << 4) |
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(frame->active_aspect & 0xf);
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ptr[2] = ((frame->extended_colorimetry & 0x7) << 4) |
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((frame->quantization_range & 0x3) << 2) |
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(frame->nups & 0x3);
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if (frame->itc)
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ptr[2] |= BIT(7);
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ptr[3] = frame->video_code & 0x7f;
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ptr[4] = ((frame->ycc_quantization_range & 0x3) << 6) |
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((frame->content_type & 0x3) << 4) |
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(frame->pixel_repeat & 0xf);
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ptr[5] = frame->top_bar & 0xff;
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ptr[6] = (frame->top_bar >> 8) & 0xff;
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ptr[7] = frame->bottom_bar & 0xff;
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ptr[8] = (frame->bottom_bar >> 8) & 0xff;
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ptr[9] = frame->left_bar & 0xff;
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ptr[10] = (frame->left_bar >> 8) & 0xff;
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ptr[11] = frame->right_bar & 0xff;
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ptr[12] = (frame->right_bar >> 8) & 0xff;
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hdmi_infoframe_set_checksum(buffer, length);
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return length;
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}
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EXPORT_SYMBOL(hdmi_avi_infoframe_pack_only);
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/**
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* hdmi_avi_infoframe_pack() - check a HDMI AVI infoframe,
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* and write it to binary buffer
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* @frame: HDMI AVI infoframe
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* @buffer: destination buffer
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* @size: size of buffer
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*
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* Validates that the infoframe is consistent and updates derived fields
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* (eg. length) based on other fields, after which it packs the information
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* contained in the @frame structure into a binary representation that
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* can be written into the corresponding controller registers. This function
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* also computes the checksum as required by section 5.3.5 of the HDMI 1.4
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* specification.
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*
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* Returns the number of bytes packed into the binary buffer or a negative
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* error code on failure.
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*/
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ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame,
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void *buffer, size_t size)
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{
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int ret;
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ret = hdmi_avi_infoframe_check(frame);
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if (ret)
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return ret;
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return hdmi_avi_infoframe_pack_only(frame, buffer, size);
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}
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EXPORT_SYMBOL(hdmi_avi_infoframe_pack);
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/**
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* hdmi_spd_infoframe_init() - initialize an HDMI SPD infoframe
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* @frame: HDMI SPD infoframe
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* @vendor: vendor string
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* @product: product string
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*
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* Returns 0 on success or a negative error code on failure.
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*/
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int hdmi_spd_infoframe_init(struct hdmi_spd_infoframe *frame,
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const char *vendor, const char *product)
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{
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size_t len;
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memset(frame, 0, sizeof(*frame));
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frame->type = HDMI_INFOFRAME_TYPE_SPD;
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frame->version = 1;
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frame->length = HDMI_SPD_INFOFRAME_SIZE;
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len = strlen(vendor);
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memcpy(frame->vendor, vendor, min(len, sizeof(frame->vendor)));
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len = strlen(product);
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memcpy(frame->product, product, min(len, sizeof(frame->product)));
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return 0;
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}
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EXPORT_SYMBOL(hdmi_spd_infoframe_init);
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static int hdmi_spd_infoframe_check_only(const struct hdmi_spd_infoframe *frame)
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{
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if (frame->type != HDMI_INFOFRAME_TYPE_SPD ||
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frame->version != 1 ||
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frame->length != HDMI_SPD_INFOFRAME_SIZE)
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return -EINVAL;
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return 0;
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}
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/**
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* hdmi_spd_infoframe_check() - check a HDMI SPD infoframe
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* @frame: HDMI SPD infoframe
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*
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* Validates that the infoframe is consistent and updates derived fields
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* (eg. length) based on other fields.
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*
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* Returns 0 on success or a negative error code on failure.
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*/
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int hdmi_spd_infoframe_check(struct hdmi_spd_infoframe *frame)
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{
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return hdmi_spd_infoframe_check_only(frame);
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}
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EXPORT_SYMBOL(hdmi_spd_infoframe_check);
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/**
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* hdmi_spd_infoframe_pack_only() - write HDMI SPD infoframe to binary buffer
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* @frame: HDMI SPD infoframe
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* @buffer: destination buffer
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* @size: size of buffer
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*
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* Packs the information contained in the @frame structure into a binary
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* representation that can be written into the corresponding controller
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* registers. Also computes the checksum as required by section 5.3.5 of
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* the HDMI 1.4 specification.
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*
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* Returns the number of bytes packed into the binary buffer or a negative
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* error code on failure.
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*/
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ssize_t hdmi_spd_infoframe_pack_only(const struct hdmi_spd_infoframe *frame,
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void *buffer, size_t size)
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{
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u8 *ptr = buffer;
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size_t length;
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int ret;
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ret = hdmi_spd_infoframe_check_only(frame);
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if (ret)
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return ret;
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length = HDMI_INFOFRAME_HEADER_SIZE + frame->length;
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if (size < length)
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return -ENOSPC;
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memset(buffer, 0, size);
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ptr[0] = frame->type;
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ptr[1] = frame->version;
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ptr[2] = frame->length;
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ptr[3] = 0; /* checksum */
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/* start infoframe payload */
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ptr += HDMI_INFOFRAME_HEADER_SIZE;
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memcpy(ptr, frame->vendor, sizeof(frame->vendor));
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memcpy(ptr + 8, frame->product, sizeof(frame->product));
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ptr[24] = frame->sdi;
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hdmi_infoframe_set_checksum(buffer, length);
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return length;
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}
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EXPORT_SYMBOL(hdmi_spd_infoframe_pack_only);
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/**
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* hdmi_spd_infoframe_pack() - check a HDMI SPD infoframe,
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* and write it to binary buffer
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* @frame: HDMI SPD infoframe
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* @buffer: destination buffer
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* @size: size of buffer
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*
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* Validates that the infoframe is consistent and updates derived fields
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* (eg. length) based on other fields, after which it packs the information
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* contained in the @frame structure into a binary representation that
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* can be written into the corresponding controller registers. This function
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* also computes the checksum as required by section 5.3.5 of the HDMI 1.4
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* specification.
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*
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* Returns the number of bytes packed into the binary buffer or a negative
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* error code on failure.
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*/
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ssize_t hdmi_spd_infoframe_pack(struct hdmi_spd_infoframe *frame,
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void *buffer, size_t size)
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{
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int ret;
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ret = hdmi_spd_infoframe_check(frame);
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if (ret)
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return ret;
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return hdmi_spd_infoframe_pack_only(frame, buffer, size);
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}
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EXPORT_SYMBOL(hdmi_spd_infoframe_pack);
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/**
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* hdmi_audio_infoframe_init() - initialize an HDMI audio infoframe
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* @frame: HDMI audio infoframe
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*
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* Returns 0 on success or a negative error code on failure.
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*/
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int hdmi_audio_infoframe_init(struct hdmi_audio_infoframe *frame)
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{
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memset(frame, 0, sizeof(*frame));
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frame->type = HDMI_INFOFRAME_TYPE_AUDIO;
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frame->version = 1;
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frame->length = HDMI_AUDIO_INFOFRAME_SIZE;
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return 0;
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}
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EXPORT_SYMBOL(hdmi_audio_infoframe_init);
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static int hdmi_audio_infoframe_check_only(const struct hdmi_audio_infoframe *frame)
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{
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if (frame->type != HDMI_INFOFRAME_TYPE_AUDIO ||
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frame->version != 1 ||
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frame->length != HDMI_AUDIO_INFOFRAME_SIZE)
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return -EINVAL;
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return 0;
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}
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/**
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* hdmi_audio_infoframe_check() - check a HDMI audio infoframe
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* @frame: HDMI audio infoframe
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*
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* Validates that the infoframe is consistent and updates derived fields
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* (eg. length) based on other fields.
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*
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* Returns 0 on success or a negative error code on failure.
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*/
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int hdmi_audio_infoframe_check(const struct hdmi_audio_infoframe *frame)
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{
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return hdmi_audio_infoframe_check_only(frame);
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}
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EXPORT_SYMBOL(hdmi_audio_infoframe_check);
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static void
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hdmi_audio_infoframe_pack_payload(const struct hdmi_audio_infoframe *frame,
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u8 *buffer)
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{
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u8 channels;
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if (frame->channels >= 2)
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channels = frame->channels - 1;
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else
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channels = 0;
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buffer[0] = ((frame->coding_type & 0xf) << 4) | (channels & 0x7);
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buffer[1] = ((frame->sample_frequency & 0x7) << 2) |
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(frame->sample_size & 0x3);
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buffer[2] = frame->coding_type_ext & 0x1f;
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buffer[3] = frame->channel_allocation;
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buffer[4] = (frame->level_shift_value & 0xf) << 3;
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if (frame->downmix_inhibit)
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buffer[4] |= BIT(7);
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}
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/**
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* hdmi_audio_infoframe_pack_only() - write HDMI audio infoframe to binary buffer
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* @frame: HDMI audio infoframe
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* @buffer: destination buffer
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* @size: size of buffer
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*
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* Packs the information contained in the @frame structure into a binary
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* representation that can be written into the corresponding controller
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* registers. Also computes the checksum as required by section 5.3.5 of
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* the HDMI 1.4 specification.
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*
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* Returns the number of bytes packed into the binary buffer or a negative
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* error code on failure.
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*/
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ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame,
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void *buffer, size_t size)
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{
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u8 *ptr = buffer;
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size_t length;
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int ret;
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ret = hdmi_audio_infoframe_check_only(frame);
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if (ret)
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return ret;
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length = HDMI_INFOFRAME_HEADER_SIZE + frame->length;
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if (size < length)
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return -ENOSPC;
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memset(buffer, 0, size);
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ptr[0] = frame->type;
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ptr[1] = frame->version;
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ptr[2] = frame->length;
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ptr[3] = 0; /* checksum */
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hdmi_audio_infoframe_pack_payload(frame,
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ptr + HDMI_INFOFRAME_HEADER_SIZE);
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hdmi_infoframe_set_checksum(buffer, length);
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return length;
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}
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EXPORT_SYMBOL(hdmi_audio_infoframe_pack_only);
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/**
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* hdmi_audio_infoframe_pack() - check a HDMI Audio infoframe,
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* and write it to binary buffer
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* @frame: HDMI Audio infoframe
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* @buffer: destination buffer
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* @size: size of buffer
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*
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* Validates that the infoframe is consistent and updates derived fields
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* (eg. length) based on other fields, after which it packs the information
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* contained in the @frame structure into a binary representation that
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* can be written into the corresponding controller registers. This function
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* also computes the checksum as required by section 5.3.5 of the HDMI 1.4
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* specification.
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*
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* Returns the number of bytes packed into the binary buffer or a negative
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* error code on failure.
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*/
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ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame,
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void *buffer, size_t size)
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{
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int ret;
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ret = hdmi_audio_infoframe_check(frame);
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if (ret)
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return ret;
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return hdmi_audio_infoframe_pack_only(frame, buffer, size);
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}
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EXPORT_SYMBOL(hdmi_audio_infoframe_pack);
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/**
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* hdmi_audio_infoframe_pack_for_dp - Pack a HDMI Audio infoframe for DisplayPort
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*
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* @frame: HDMI Audio infoframe
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* @sdp: Secondary data packet for DisplayPort.
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* @dp_version: DisplayPort version to be encoded in the header
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*
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* Packs a HDMI Audio Infoframe to be sent over DisplayPort. This function
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* fills the secondary data packet to be used for DisplayPort.
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*
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* Return: Number of total written bytes or a negative errno on failure.
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*/
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ssize_t
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hdmi_audio_infoframe_pack_for_dp(const struct hdmi_audio_infoframe *frame,
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struct dp_sdp *sdp, u8 dp_version)
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{
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int ret;
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ret = hdmi_audio_infoframe_check(frame);
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if (ret)
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return ret;
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memset(sdp->db, 0, sizeof(sdp->db));
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/* Secondary-data packet header */
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sdp->sdp_header.HB0 = 0;
|
|
sdp->sdp_header.HB1 = frame->type;
|
|
sdp->sdp_header.HB2 = DP_SDP_AUDIO_INFOFRAME_HB2;
|
|
sdp->sdp_header.HB3 = (dp_version & 0x3f) << 2;
|
|
|
|
hdmi_audio_infoframe_pack_payload(frame, sdp->db);
|
|
|
|
/* Return size = frame length + four HB for sdp_header */
|
|
return frame->length + 4;
|
|
}
|
|
EXPORT_SYMBOL(hdmi_audio_infoframe_pack_for_dp);
|
|
|
|
/**
|
|
* 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;
|
|
frame->length = HDMI_VENDOR_INFOFRAME_SIZE;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(hdmi_vendor_infoframe_init);
|
|
|
|
static int hdmi_vendor_infoframe_length(const struct hdmi_vendor_infoframe *frame)
|
|
{
|
|
/* for side by side (half) we also need to provide 3D_Ext_Data */
|
|
if (frame->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF)
|
|
return 6;
|
|
else if (frame->vic != 0 || frame->s3d_struct != HDMI_3D_STRUCTURE_INVALID)
|
|
return 5;
|
|
else
|
|
return 4;
|
|
}
|
|
|
|
static int hdmi_vendor_infoframe_check_only(const struct hdmi_vendor_infoframe *frame)
|
|
{
|
|
if (frame->type != HDMI_INFOFRAME_TYPE_VENDOR ||
|
|
frame->version != 1 ||
|
|
frame->oui != HDMI_IEEE_OUI)
|
|
return -EINVAL;
|
|
|
|
/* only one of those can be supplied */
|
|
if (frame->vic != 0 && frame->s3d_struct != HDMI_3D_STRUCTURE_INVALID)
|
|
return -EINVAL;
|
|
|
|
if (frame->length != hdmi_vendor_infoframe_length(frame))
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* hdmi_vendor_infoframe_check() - check a HDMI vendor infoframe
|
|
* @frame: HDMI infoframe
|
|
*
|
|
* Validates that the infoframe is consistent and updates derived fields
|
|
* (eg. length) based on other fields.
|
|
*
|
|
* Returns 0 on success or a negative error code on failure.
|
|
*/
|
|
int hdmi_vendor_infoframe_check(struct hdmi_vendor_infoframe *frame)
|
|
{
|
|
frame->length = hdmi_vendor_infoframe_length(frame);
|
|
|
|
return hdmi_vendor_infoframe_check_only(frame);
|
|
}
|
|
EXPORT_SYMBOL(hdmi_vendor_infoframe_check);
|
|
|
|
/**
|
|
* hdmi_vendor_infoframe_pack_only() - 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_only(const struct hdmi_vendor_infoframe *frame,
|
|
void *buffer, size_t size)
|
|
{
|
|
u8 *ptr = buffer;
|
|
size_t length;
|
|
int ret;
|
|
|
|
ret = hdmi_vendor_infoframe_check_only(frame);
|
|
if (ret)
|
|
return ret;
|
|
|
|
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->s3d_struct != HDMI_3D_STRUCTURE_INVALID) {
|
|
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;
|
|
} else if (frame->vic) {
|
|
ptr[7] = 0x1 << 5; /* video format */
|
|
ptr[8] = frame->vic;
|
|
} else {
|
|
ptr[7] = 0x0 << 5; /* video format */
|
|
}
|
|
|
|
hdmi_infoframe_set_checksum(buffer, length);
|
|
|
|
return length;
|
|
}
|
|
EXPORT_SYMBOL(hdmi_vendor_infoframe_pack_only);
|
|
|
|
/**
|
|
* hdmi_vendor_infoframe_pack() - check a HDMI Vendor infoframe,
|
|
* and write it to binary buffer
|
|
* @frame: HDMI Vendor infoframe
|
|
* @buffer: destination buffer
|
|
* @size: size of buffer
|
|
*
|
|
* Validates that the infoframe is consistent and updates derived fields
|
|
* (eg. length) based on other fields, after which it packs the information
|
|
* contained in the @frame structure into a binary representation that
|
|
* can be written into the corresponding controller registers. This function
|
|
* 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)
|
|
{
|
|
int ret;
|
|
|
|
ret = hdmi_vendor_infoframe_check(frame);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return hdmi_vendor_infoframe_pack_only(frame, buffer, size);
|
|
}
|
|
EXPORT_SYMBOL(hdmi_vendor_infoframe_pack);
|
|
|
|
static int
|
|
hdmi_vendor_any_infoframe_check_only(const union hdmi_vendor_any_infoframe *frame)
|
|
{
|
|
if (frame->any.type != HDMI_INFOFRAME_TYPE_VENDOR ||
|
|
frame->any.version != 1)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* hdmi_drm_infoframe_init() - initialize an HDMI Dynaminc Range and
|
|
* mastering infoframe
|
|
* @frame: HDMI DRM infoframe
|
|
*
|
|
* Returns 0 on success or a negative error code on failure.
|
|
*/
|
|
int hdmi_drm_infoframe_init(struct hdmi_drm_infoframe *frame)
|
|
{
|
|
memset(frame, 0, sizeof(*frame));
|
|
|
|
frame->type = HDMI_INFOFRAME_TYPE_DRM;
|
|
frame->version = 1;
|
|
frame->length = HDMI_DRM_INFOFRAME_SIZE;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(hdmi_drm_infoframe_init);
|
|
|
|
static int hdmi_drm_infoframe_check_only(const struct hdmi_drm_infoframe *frame)
|
|
{
|
|
if (frame->type != HDMI_INFOFRAME_TYPE_DRM ||
|
|
frame->version != 1)
|
|
return -EINVAL;
|
|
|
|
if (frame->length != HDMI_DRM_INFOFRAME_SIZE)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* hdmi_drm_infoframe_check() - check a HDMI DRM infoframe
|
|
* @frame: HDMI DRM infoframe
|
|
*
|
|
* Validates that the infoframe is consistent.
|
|
* Returns 0 on success or a negative error code on failure.
|
|
*/
|
|
int hdmi_drm_infoframe_check(struct hdmi_drm_infoframe *frame)
|
|
{
|
|
return hdmi_drm_infoframe_check_only(frame);
|
|
}
|
|
EXPORT_SYMBOL(hdmi_drm_infoframe_check);
|
|
|
|
/**
|
|
* hdmi_drm_infoframe_pack_only() - write HDMI DRM infoframe to binary buffer
|
|
* @frame: HDMI DRM 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_drm_infoframe_pack_only(const struct hdmi_drm_infoframe *frame,
|
|
void *buffer, size_t size)
|
|
{
|
|
u8 *ptr = buffer;
|
|
size_t length;
|
|
int i;
|
|
|
|
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++ = frame->eotf;
|
|
*ptr++ = frame->metadata_type;
|
|
|
|
for (i = 0; i < 3; i++) {
|
|
*ptr++ = frame->display_primaries[i].x;
|
|
*ptr++ = frame->display_primaries[i].x >> 8;
|
|
*ptr++ = frame->display_primaries[i].y;
|
|
*ptr++ = frame->display_primaries[i].y >> 8;
|
|
}
|
|
|
|
*ptr++ = frame->white_point.x;
|
|
*ptr++ = frame->white_point.x >> 8;
|
|
|
|
*ptr++ = frame->white_point.y;
|
|
*ptr++ = frame->white_point.y >> 8;
|
|
|
|
*ptr++ = frame->max_display_mastering_luminance;
|
|
*ptr++ = frame->max_display_mastering_luminance >> 8;
|
|
|
|
*ptr++ = frame->min_display_mastering_luminance;
|
|
*ptr++ = frame->min_display_mastering_luminance >> 8;
|
|
|
|
*ptr++ = frame->max_cll;
|
|
*ptr++ = frame->max_cll >> 8;
|
|
|
|
*ptr++ = frame->max_fall;
|
|
*ptr++ = frame->max_fall >> 8;
|
|
|
|
hdmi_infoframe_set_checksum(buffer, length);
|
|
|
|
return length;
|
|
}
|
|
EXPORT_SYMBOL(hdmi_drm_infoframe_pack_only);
|
|
|
|
/**
|
|
* hdmi_drm_infoframe_pack() - check a HDMI DRM infoframe,
|
|
* and write it to binary buffer
|
|
* @frame: HDMI DRM infoframe
|
|
* @buffer: destination buffer
|
|
* @size: size of buffer
|
|
*
|
|
* Validates that the infoframe is consistent and updates derived fields
|
|
* (eg. length) based on other fields, after which it packs the information
|
|
* contained in the @frame structure into a binary representation that
|
|
* can be written into the corresponding controller registers. This function
|
|
* 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_drm_infoframe_pack(struct hdmi_drm_infoframe *frame,
|
|
void *buffer, size_t size)
|
|
{
|
|
int ret;
|
|
|
|
ret = hdmi_drm_infoframe_check(frame);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return hdmi_drm_infoframe_pack_only(frame, buffer, size);
|
|
}
|
|
EXPORT_SYMBOL(hdmi_drm_infoframe_pack);
|
|
|
|
/*
|
|
* hdmi_vendor_any_infoframe_check() - check a vendor infoframe
|
|
*/
|
|
static int
|
|
hdmi_vendor_any_infoframe_check(union hdmi_vendor_any_infoframe *frame)
|
|
{
|
|
int ret;
|
|
|
|
ret = hdmi_vendor_any_infoframe_check_only(frame);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* we only know about HDMI vendor infoframes */
|
|
if (frame->any.oui != HDMI_IEEE_OUI)
|
|
return -EINVAL;
|
|
|
|
return hdmi_vendor_infoframe_check(&frame->hdmi);
|
|
}
|
|
|
|
/*
|
|
* hdmi_vendor_any_infoframe_pack_only() - write a vendor infoframe to binary buffer
|
|
*/
|
|
static ssize_t
|
|
hdmi_vendor_any_infoframe_pack_only(const union hdmi_vendor_any_infoframe *frame,
|
|
void *buffer, size_t size)
|
|
{
|
|
int ret;
|
|
|
|
ret = hdmi_vendor_any_infoframe_check_only(frame);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* we only know about HDMI vendor infoframes */
|
|
if (frame->any.oui != HDMI_IEEE_OUI)
|
|
return -EINVAL;
|
|
|
|
return hdmi_vendor_infoframe_pack_only(&frame->hdmi, buffer, size);
|
|
}
|
|
|
|
/*
|
|
* hdmi_vendor_any_infoframe_pack() - check a vendor infoframe,
|
|
* and write it to binary buffer
|
|
*/
|
|
static ssize_t
|
|
hdmi_vendor_any_infoframe_pack(union hdmi_vendor_any_infoframe *frame,
|
|
void *buffer, size_t size)
|
|
{
|
|
int ret;
|
|
|
|
ret = hdmi_vendor_any_infoframe_check(frame);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return hdmi_vendor_any_infoframe_pack_only(frame, buffer, size);
|
|
}
|
|
|
|
/**
|
|
* hdmi_infoframe_check() - check a HDMI infoframe
|
|
* @frame: HDMI infoframe
|
|
*
|
|
* Validates that the infoframe is consistent and updates derived fields
|
|
* (eg. length) based on other fields.
|
|
*
|
|
* Returns 0 on success or a negative error code on failure.
|
|
*/
|
|
int
|
|
hdmi_infoframe_check(union hdmi_infoframe *frame)
|
|
{
|
|
switch (frame->any.type) {
|
|
case HDMI_INFOFRAME_TYPE_AVI:
|
|
return hdmi_avi_infoframe_check(&frame->avi);
|
|
case HDMI_INFOFRAME_TYPE_SPD:
|
|
return hdmi_spd_infoframe_check(&frame->spd);
|
|
case HDMI_INFOFRAME_TYPE_AUDIO:
|
|
return hdmi_audio_infoframe_check(&frame->audio);
|
|
case HDMI_INFOFRAME_TYPE_VENDOR:
|
|
return hdmi_vendor_any_infoframe_check(&frame->vendor);
|
|
default:
|
|
WARN(1, "Bad infoframe type %d\n", frame->any.type);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(hdmi_infoframe_check);
|
|
|
|
/**
|
|
* hdmi_infoframe_pack_only() - 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_only(const 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_only(&frame->avi,
|
|
buffer, size);
|
|
break;
|
|
case HDMI_INFOFRAME_TYPE_DRM:
|
|
length = hdmi_drm_infoframe_pack_only(&frame->drm,
|
|
buffer, size);
|
|
break;
|
|
case HDMI_INFOFRAME_TYPE_SPD:
|
|
length = hdmi_spd_infoframe_pack_only(&frame->spd,
|
|
buffer, size);
|
|
break;
|
|
case HDMI_INFOFRAME_TYPE_AUDIO:
|
|
length = hdmi_audio_infoframe_pack_only(&frame->audio,
|
|
buffer, size);
|
|
break;
|
|
case HDMI_INFOFRAME_TYPE_VENDOR:
|
|
length = hdmi_vendor_any_infoframe_pack_only(&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_only);
|
|
|
|
/**
|
|
* hdmi_infoframe_pack() - check a HDMI infoframe,
|
|
* and write it to binary buffer
|
|
* @frame: HDMI infoframe
|
|
* @buffer: destination buffer
|
|
* @size: size of buffer
|
|
*
|
|
* Validates that the infoframe is consistent and updates derived fields
|
|
* (eg. length) based on other fields, after which it packs the information
|
|
* contained in the @frame structure into a binary representation that
|
|
* can be written into the corresponding controller registers. This function
|
|
* 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_DRM:
|
|
length = hdmi_drm_infoframe_pack(&frame->drm, 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";
|
|
case HDMI_INFOFRAME_TYPE_DRM:
|
|
return "Dynamic Range and Mastering";
|
|
}
|
|
return "Reserved";
|
|
}
|
|
|
|
static void hdmi_infoframe_log_header(const char *level,
|
|
struct device *dev,
|
|
const 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_64_27:
|
|
return "64:27";
|
|
case HDMI_PICTURE_ASPECT_256_135:
|
|
return "256:135";
|
|
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_OPYCC_601:
|
|
return "opYCC 601";
|
|
case HDMI_EXTENDED_COLORIMETRY_OPRGB:
|
|
return "opRGB";
|
|
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";
|
|
}
|
|
|
|
static void hdmi_avi_infoframe_log(const char *level,
|
|
struct device *dev,
|
|
const struct hdmi_avi_infoframe *frame)
|
|
{
|
|
hdmi_infoframe_log_header(level, dev,
|
|
(const 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";
|
|
}
|
|
|
|
static void hdmi_spd_infoframe_log(const char *level,
|
|
struct device *dev,
|
|
const struct hdmi_spd_infoframe *frame)
|
|
{
|
|
u8 buf[17];
|
|
|
|
hdmi_infoframe_log_header(level, dev,
|
|
(const 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";
|
|
}
|
|
|
|
static void hdmi_audio_infoframe_log(const char *level,
|
|
struct device *dev,
|
|
const struct hdmi_audio_infoframe *frame)
|
|
{
|
|
hdmi_infoframe_log_header(level, dev,
|
|
(const 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 void hdmi_drm_infoframe_log(const char *level,
|
|
struct device *dev,
|
|
const struct hdmi_drm_infoframe *frame)
|
|
{
|
|
int i;
|
|
|
|
hdmi_infoframe_log_header(level, dev,
|
|
(struct hdmi_any_infoframe *)frame);
|
|
hdmi_log("length: %d\n", frame->length);
|
|
hdmi_log("metadata type: %d\n", frame->metadata_type);
|
|
hdmi_log("eotf: %d\n", frame->eotf);
|
|
for (i = 0; i < 3; i++) {
|
|
hdmi_log("x[%d]: %d\n", i, frame->display_primaries[i].x);
|
|
hdmi_log("y[%d]: %d\n", i, frame->display_primaries[i].y);
|
|
}
|
|
|
|
hdmi_log("white point x: %d\n", frame->white_point.x);
|
|
hdmi_log("white point y: %d\n", frame->white_point.y);
|
|
|
|
hdmi_log("max_display_mastering_luminance: %d\n",
|
|
frame->max_display_mastering_luminance);
|
|
hdmi_log("min_display_mastering_luminance: %d\n",
|
|
frame->min_display_mastering_luminance);
|
|
|
|
hdmi_log("max_cll: %d\n", frame->max_cll);
|
|
hdmi_log("max_fall: %d\n", frame->max_fall);
|
|
}
|
|
|
|
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";
|
|
}
|
|
|
|
static void
|
|
hdmi_vendor_any_infoframe_log(const char *level,
|
|
struct device *dev,
|
|
const union hdmi_vendor_any_infoframe *frame)
|
|
{
|
|
const struct hdmi_vendor_infoframe *hvf = &frame->hdmi;
|
|
|
|
hdmi_infoframe_log_header(level, dev,
|
|
(const 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,
|
|
const 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;
|
|
case HDMI_INFOFRAME_TYPE_DRM:
|
|
hdmi_drm_infoframe_log(level, dev, &frame->drm);
|
|
break;
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(hdmi_infoframe_log);
|
|
|
|
/**
|
|
* hdmi_avi_infoframe_unpack() - unpack binary buffer to a HDMI AVI infoframe
|
|
* @frame: HDMI AVI infoframe
|
|
* @buffer: source buffer
|
|
* @size: size of buffer
|
|
*
|
|
* 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,
|
|
const void *buffer, size_t size)
|
|
{
|
|
const u8 *ptr = buffer;
|
|
|
|
if (size < HDMI_INFOFRAME_SIZE(AVI))
|
|
return -EINVAL;
|
|
|
|
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;
|
|
|
|
hdmi_avi_infoframe_init(frame);
|
|
|
|
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[6] << 8) | ptr[5];
|
|
frame->bottom_bar = (ptr[8] << 8) | ptr[7];
|
|
}
|
|
if (ptr[0] & 0x4) {
|
|
frame->left_bar = (ptr[10] << 8) | ptr[9];
|
|
frame->right_bar = (ptr[12] << 8) | ptr[11];
|
|
}
|
|
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
|
|
* @frame: HDMI SPD infoframe
|
|
* @buffer: source buffer
|
|
* @size: size of buffer
|
|
*
|
|
* 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,
|
|
const void *buffer, size_t size)
|
|
{
|
|
const u8 *ptr = buffer;
|
|
int ret;
|
|
|
|
if (size < HDMI_INFOFRAME_SIZE(SPD))
|
|
return -EINVAL;
|
|
|
|
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
|
|
* @frame: HDMI Audio infoframe
|
|
* @buffer: source buffer
|
|
* @size: size of buffer
|
|
*
|
|
* 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,
|
|
const void *buffer, size_t size)
|
|
{
|
|
const u8 *ptr = buffer;
|
|
int ret;
|
|
|
|
if (size < HDMI_INFOFRAME_SIZE(AUDIO))
|
|
return -EINVAL;
|
|
|
|
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_any_infoframe_unpack() - unpack binary buffer to a HDMI
|
|
* vendor infoframe
|
|
* @frame: HDMI Vendor infoframe
|
|
* @buffer: source buffer
|
|
* @size: size of buffer
|
|
*
|
|
* 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,
|
|
const void *buffer, size_t size)
|
|
{
|
|
const u8 *ptr = buffer;
|
|
size_t length;
|
|
int ret;
|
|
u8 hdmi_video_format;
|
|
struct hdmi_vendor_infoframe *hvf = &frame->hdmi;
|
|
|
|
if (size < HDMI_INFOFRAME_HEADER_SIZE)
|
|
return -EINVAL;
|
|
|
|
if (ptr[0] != HDMI_INFOFRAME_TYPE_VENDOR ||
|
|
ptr[1] != 1 ||
|
|
(ptr[2] != 4 && ptr[2] != 5 && ptr[2] != 6))
|
|
return -EINVAL;
|
|
|
|
length = ptr[2];
|
|
|
|
if (size < HDMI_INFOFRAME_HEADER_SIZE + length)
|
|
return -EINVAL;
|
|
|
|
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 == 0x2) {
|
|
if (length != 5 && length != 6)
|
|
return -EINVAL;
|
|
hvf->s3d_struct = ptr[4] >> 4;
|
|
if (hvf->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF) {
|
|
if (length != 6)
|
|
return -EINVAL;
|
|
hvf->s3d_ext_data = ptr[5] >> 4;
|
|
}
|
|
} else if (hdmi_video_format == 0x1) {
|
|
if (length != 5)
|
|
return -EINVAL;
|
|
hvf->vic = ptr[4];
|
|
} else {
|
|
if (length != 4)
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* hdmi_drm_infoframe_unpack_only() - unpack binary buffer of CTA-861-G DRM
|
|
* infoframe DataBytes to a HDMI DRM
|
|
* infoframe
|
|
* @frame: HDMI DRM infoframe
|
|
* @buffer: source buffer
|
|
* @size: size of buffer
|
|
*
|
|
* Unpacks CTA-861-G DRM infoframe DataBytes contained in the binary @buffer
|
|
* into a structured @frame of the HDMI Dynamic Range and Mastering (DRM)
|
|
* infoframe.
|
|
*
|
|
* Returns 0 on success or a negative error code on failure.
|
|
*/
|
|
int hdmi_drm_infoframe_unpack_only(struct hdmi_drm_infoframe *frame,
|
|
const void *buffer, size_t size)
|
|
{
|
|
const u8 *ptr = buffer;
|
|
const u8 *temp;
|
|
u8 x_lsb, x_msb;
|
|
u8 y_lsb, y_msb;
|
|
int ret;
|
|
int i;
|
|
|
|
if (size < HDMI_DRM_INFOFRAME_SIZE)
|
|
return -EINVAL;
|
|
|
|
ret = hdmi_drm_infoframe_init(frame);
|
|
if (ret)
|
|
return ret;
|
|
|
|
frame->eotf = ptr[0] & 0x7;
|
|
frame->metadata_type = ptr[1] & 0x7;
|
|
|
|
temp = ptr + 2;
|
|
for (i = 0; i < 3; i++) {
|
|
x_lsb = *temp++;
|
|
x_msb = *temp++;
|
|
frame->display_primaries[i].x = (x_msb << 8) | x_lsb;
|
|
y_lsb = *temp++;
|
|
y_msb = *temp++;
|
|
frame->display_primaries[i].y = (y_msb << 8) | y_lsb;
|
|
}
|
|
|
|
frame->white_point.x = (ptr[15] << 8) | ptr[14];
|
|
frame->white_point.y = (ptr[17] << 8) | ptr[16];
|
|
|
|
frame->max_display_mastering_luminance = (ptr[19] << 8) | ptr[18];
|
|
frame->min_display_mastering_luminance = (ptr[21] << 8) | ptr[20];
|
|
frame->max_cll = (ptr[23] << 8) | ptr[22];
|
|
frame->max_fall = (ptr[25] << 8) | ptr[24];
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(hdmi_drm_infoframe_unpack_only);
|
|
|
|
/**
|
|
* hdmi_drm_infoframe_unpack() - unpack binary buffer to a HDMI DRM infoframe
|
|
* @frame: HDMI DRM infoframe
|
|
* @buffer: source buffer
|
|
* @size: size of buffer
|
|
*
|
|
* Unpacks the CTA-861-G DRM infoframe contained in the binary @buffer into
|
|
* a structured @frame of the HDMI Dynamic Range and Mastering (DRM)
|
|
* infoframe. It 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_drm_infoframe_unpack(struct hdmi_drm_infoframe *frame,
|
|
const void *buffer, size_t size)
|
|
{
|
|
const u8 *ptr = buffer;
|
|
int ret;
|
|
|
|
if (size < HDMI_INFOFRAME_SIZE(DRM))
|
|
return -EINVAL;
|
|
|
|
if (ptr[0] != HDMI_INFOFRAME_TYPE_DRM ||
|
|
ptr[1] != 1 ||
|
|
ptr[2] != HDMI_DRM_INFOFRAME_SIZE)
|
|
return -EINVAL;
|
|
|
|
if (hdmi_infoframe_checksum(buffer, HDMI_INFOFRAME_SIZE(DRM)) != 0)
|
|
return -EINVAL;
|
|
|
|
ret = hdmi_drm_infoframe_unpack_only(frame, ptr + HDMI_INFOFRAME_HEADER_SIZE,
|
|
size - HDMI_INFOFRAME_HEADER_SIZE);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* hdmi_infoframe_unpack() - unpack binary buffer to a HDMI infoframe
|
|
* @frame: HDMI infoframe
|
|
* @buffer: source buffer
|
|
* @size: size of buffer
|
|
*
|
|
* 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,
|
|
const void *buffer, size_t size)
|
|
{
|
|
int ret;
|
|
const u8 *ptr = buffer;
|
|
|
|
if (size < HDMI_INFOFRAME_HEADER_SIZE)
|
|
return -EINVAL;
|
|
|
|
switch (ptr[0]) {
|
|
case HDMI_INFOFRAME_TYPE_AVI:
|
|
ret = hdmi_avi_infoframe_unpack(&frame->avi, buffer, size);
|
|
break;
|
|
case HDMI_INFOFRAME_TYPE_DRM:
|
|
ret = hdmi_drm_infoframe_unpack(&frame->drm, buffer, size);
|
|
break;
|
|
case HDMI_INFOFRAME_TYPE_SPD:
|
|
ret = hdmi_spd_infoframe_unpack(&frame->spd, buffer, size);
|
|
break;
|
|
case HDMI_INFOFRAME_TYPE_AUDIO:
|
|
ret = hdmi_audio_infoframe_unpack(&frame->audio, buffer, size);
|
|
break;
|
|
case HDMI_INFOFRAME_TYPE_VENDOR:
|
|
ret = hdmi_vendor_any_infoframe_unpack(&frame->vendor, buffer, size);
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(hdmi_infoframe_unpack);
|