825 lines
24 KiB
C
825 lines
24 KiB
C
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/*
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* ALSA SoC codec for HDMI encoder drivers
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* Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
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* Author: Jyri Sarha <jsarha@ti.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/string.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/tlv.h>
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#include <sound/pcm_drm_eld.h>
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#include <sound/hdmi-codec.h>
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#include <sound/pcm_iec958.h>
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#include <drm/drm_crtc.h> /* This is only to get MAX_ELD_BYTES */
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#define HDMI_CODEC_CHMAP_IDX_UNKNOWN -1
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struct hdmi_codec_channel_map_table {
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unsigned char map; /* ALSA API channel map position */
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unsigned long spk_mask; /* speaker position bit mask */
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};
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/*
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* CEA speaker placement for HDMI 1.4:
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*
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* FL FLC FC FRC FR FRW
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*
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* LFE
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*
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* RL RLC RC RRC RR
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*
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* Speaker placement has to be extended to support HDMI 2.0
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*/
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enum hdmi_codec_cea_spk_placement {
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FL = BIT(0), /* Front Left */
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FC = BIT(1), /* Front Center */
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FR = BIT(2), /* Front Right */
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FLC = BIT(3), /* Front Left Center */
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FRC = BIT(4), /* Front Right Center */
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RL = BIT(5), /* Rear Left */
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RC = BIT(6), /* Rear Center */
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RR = BIT(7), /* Rear Right */
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RLC = BIT(8), /* Rear Left Center */
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RRC = BIT(9), /* Rear Right Center */
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LFE = BIT(10), /* Low Frequency Effect */
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};
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/*
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* cea Speaker allocation structure
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*/
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struct hdmi_codec_cea_spk_alloc {
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const int ca_id;
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unsigned int n_ch;
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unsigned long mask;
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};
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/* Channel maps stereo HDMI */
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static const struct snd_pcm_chmap_elem hdmi_codec_stereo_chmaps[] = {
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{ .channels = 2,
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
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{ }
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};
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/* Channel maps for multi-channel playbacks, up to 8 n_ch */
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static const struct snd_pcm_chmap_elem hdmi_codec_8ch_chmaps[] = {
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{ .channels = 2, /* CA_ID 0x00 */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
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{ .channels = 4, /* CA_ID 0x01 */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
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SNDRV_CHMAP_NA } },
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{ .channels = 4, /* CA_ID 0x02 */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_FC } },
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{ .channels = 4, /* CA_ID 0x03 */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
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SNDRV_CHMAP_FC } },
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{ .channels = 6, /* CA_ID 0x04 */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
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{ .channels = 6, /* CA_ID 0x05 */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
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SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
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{ .channels = 6, /* CA_ID 0x06 */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
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{ .channels = 6, /* CA_ID 0x07 */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
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SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
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{ .channels = 6, /* CA_ID 0x08 */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
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{ .channels = 6, /* CA_ID 0x09 */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
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SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
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{ .channels = 6, /* CA_ID 0x0A */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
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{ .channels = 6, /* CA_ID 0x0B */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
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SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
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{ .channels = 8, /* CA_ID 0x0C */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
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SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
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{ .channels = 8, /* CA_ID 0x0D */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
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SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
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SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
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{ .channels = 8, /* CA_ID 0x0E */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
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SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
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{ .channels = 8, /* CA_ID 0x0F */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
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SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
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SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
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{ .channels = 8, /* CA_ID 0x10 */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
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SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
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{ .channels = 8, /* CA_ID 0x11 */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
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SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
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SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
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{ .channels = 8, /* CA_ID 0x12 */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
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SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
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{ .channels = 8, /* CA_ID 0x13 */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
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SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
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SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
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{ .channels = 8, /* CA_ID 0x14 */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
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{ .channels = 8, /* CA_ID 0x15 */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
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SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
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{ .channels = 8, /* CA_ID 0x16 */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
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{ .channels = 8, /* CA_ID 0x17 */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
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SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
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{ .channels = 8, /* CA_ID 0x18 */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
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{ .channels = 8, /* CA_ID 0x19 */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
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SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
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{ .channels = 8, /* CA_ID 0x1A */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
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{ .channels = 8, /* CA_ID 0x1B */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
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SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
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{ .channels = 8, /* CA_ID 0x1C */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
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{ .channels = 8, /* CA_ID 0x1D */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
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SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
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{ .channels = 8, /* CA_ID 0x1E */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
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{ .channels = 8, /* CA_ID 0x1F */
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.map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
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SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
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SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
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{ }
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};
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/*
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* hdmi_codec_channel_alloc: speaker configuration available for CEA
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*
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* This is an ordered list that must match with hdmi_codec_8ch_chmaps struct
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* The preceding ones have better chances to be selected by
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* hdmi_codec_get_ch_alloc_table_idx().
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*/
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static const struct hdmi_codec_cea_spk_alloc hdmi_codec_channel_alloc[] = {
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{ .ca_id = 0x00, .n_ch = 2,
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.mask = FL | FR},
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/* 2.1 */
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{ .ca_id = 0x01, .n_ch = 4,
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.mask = FL | FR | LFE},
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/* Dolby Surround */
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{ .ca_id = 0x02, .n_ch = 4,
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.mask = FL | FR | FC },
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/* surround51 */
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{ .ca_id = 0x0b, .n_ch = 6,
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.mask = FL | FR | LFE | FC | RL | RR},
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/* surround40 */
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{ .ca_id = 0x08, .n_ch = 6,
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.mask = FL | FR | RL | RR },
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/* surround41 */
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{ .ca_id = 0x09, .n_ch = 6,
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.mask = FL | FR | LFE | RL | RR },
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/* surround50 */
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{ .ca_id = 0x0a, .n_ch = 6,
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.mask = FL | FR | FC | RL | RR },
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/* 6.1 */
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{ .ca_id = 0x0f, .n_ch = 8,
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.mask = FL | FR | LFE | FC | RL | RR | RC },
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/* surround71 */
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{ .ca_id = 0x13, .n_ch = 8,
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.mask = FL | FR | LFE | FC | RL | RR | RLC | RRC },
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/* others */
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{ .ca_id = 0x03, .n_ch = 8,
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.mask = FL | FR | LFE | FC },
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{ .ca_id = 0x04, .n_ch = 8,
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.mask = FL | FR | RC},
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{ .ca_id = 0x05, .n_ch = 8,
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.mask = FL | FR | LFE | RC },
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{ .ca_id = 0x06, .n_ch = 8,
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.mask = FL | FR | FC | RC },
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{ .ca_id = 0x07, .n_ch = 8,
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.mask = FL | FR | LFE | FC | RC },
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{ .ca_id = 0x0c, .n_ch = 8,
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.mask = FL | FR | RC | RL | RR },
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{ .ca_id = 0x0d, .n_ch = 8,
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.mask = FL | FR | LFE | RL | RR | RC },
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{ .ca_id = 0x0e, .n_ch = 8,
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.mask = FL | FR | FC | RL | RR | RC },
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{ .ca_id = 0x10, .n_ch = 8,
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.mask = FL | FR | RL | RR | RLC | RRC },
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{ .ca_id = 0x11, .n_ch = 8,
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.mask = FL | FR | LFE | RL | RR | RLC | RRC },
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{ .ca_id = 0x12, .n_ch = 8,
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.mask = FL | FR | FC | RL | RR | RLC | RRC },
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{ .ca_id = 0x14, .n_ch = 8,
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.mask = FL | FR | FLC | FRC },
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{ .ca_id = 0x15, .n_ch = 8,
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.mask = FL | FR | LFE | FLC | FRC },
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{ .ca_id = 0x16, .n_ch = 8,
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.mask = FL | FR | FC | FLC | FRC },
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{ .ca_id = 0x17, .n_ch = 8,
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.mask = FL | FR | LFE | FC | FLC | FRC },
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{ .ca_id = 0x18, .n_ch = 8,
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.mask = FL | FR | RC | FLC | FRC },
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{ .ca_id = 0x19, .n_ch = 8,
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.mask = FL | FR | LFE | RC | FLC | FRC },
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{ .ca_id = 0x1a, .n_ch = 8,
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.mask = FL | FR | RC | FC | FLC | FRC },
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{ .ca_id = 0x1b, .n_ch = 8,
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.mask = FL | FR | LFE | RC | FC | FLC | FRC },
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{ .ca_id = 0x1c, .n_ch = 8,
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.mask = FL | FR | RL | RR | FLC | FRC },
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{ .ca_id = 0x1d, .n_ch = 8,
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.mask = FL | FR | LFE | RL | RR | FLC | FRC },
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{ .ca_id = 0x1e, .n_ch = 8,
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.mask = FL | FR | FC | RL | RR | FLC | FRC },
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{ .ca_id = 0x1f, .n_ch = 8,
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.mask = FL | FR | LFE | FC | RL | RR | FLC | FRC },
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};
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|
|
struct hdmi_codec_priv {
|
||
|
|
struct hdmi_codec_pdata hcd;
|
||
|
|
struct snd_soc_dai_driver *daidrv;
|
||
|
|
struct hdmi_codec_daifmt daifmt[2];
|
||
|
|
struct mutex current_stream_lock;
|
||
|
|
struct snd_pcm_substream *current_stream;
|
||
|
|
uint8_t eld[MAX_ELD_BYTES];
|
||
|
|
struct snd_pcm_chmap *chmap_info;
|
||
|
|
unsigned int chmap_idx;
|
||
|
|
};
|
||
|
|
|
||
|
|
static const struct snd_soc_dapm_widget hdmi_widgets[] = {
|
||
|
|
SND_SOC_DAPM_OUTPUT("TX"),
|
||
|
|
};
|
||
|
|
|
||
|
|
static const struct snd_soc_dapm_route hdmi_routes[] = {
|
||
|
|
{ "TX", NULL, "Playback" },
|
||
|
|
};
|
||
|
|
|
||
|
|
enum {
|
||
|
|
DAI_ID_I2S = 0,
|
||
|
|
DAI_ID_SPDIF,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol,
|
||
|
|
struct snd_ctl_elem_info *uinfo)
|
||
|
|
{
|
||
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
|
||
|
|
uinfo->count = FIELD_SIZEOF(struct hdmi_codec_priv, eld);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
|
||
|
|
struct snd_ctl_elem_value *ucontrol)
|
||
|
|
{
|
||
|
|
struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
|
||
|
|
struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
|
||
|
|
|
||
|
|
memcpy(ucontrol->value.bytes.data, hcp->eld, sizeof(hcp->eld));
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
static const unsigned long hdmi_codec_eld_spk_alloc_bits[] = {
|
||
|
|
[0] = FL | FR, [1] = LFE, [2] = FC, [3] = RL | RR,
|
||
|
|
[4] = RC, [5] = FLC | FRC, [6] = RLC | RRC,
|
||
|
|
};
|
||
|
|
unsigned long spk_mask = 0;
|
||
|
|
|
||
|
|
for (i = 0; i < ARRAY_SIZE(hdmi_codec_eld_spk_alloc_bits); i++) {
|
||
|
|
if (spk_alloc & (1 << i))
|
||
|
|
spk_mask |= hdmi_codec_eld_spk_alloc_bits[i];
|
||
|
|
}
|
||
|
|
|
||
|
|
return spk_mask;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp)
|
||
|
|
{
|
||
|
|
u8 spk_alloc;
|
||
|
|
unsigned long spk_mask;
|
||
|
|
|
||
|
|
spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
|
||
|
|
spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
|
||
|
|
|
||
|
|
/* Detect if only stereo supported, else return 8 channels mappings */
|
||
|
|
if ((spk_mask & ~(FL | FR)) && hcp->chmap_info->max_channels > 2)
|
||
|
|
hcp->chmap_info->chmap = hdmi_codec_8ch_chmaps;
|
||
|
|
else
|
||
|
|
hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv *hcp,
|
||
|
|
unsigned char channels)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
u8 spk_alloc;
|
||
|
|
unsigned long spk_mask;
|
||
|
|
const struct hdmi_codec_cea_spk_alloc *cap = hdmi_codec_channel_alloc;
|
||
|
|
|
||
|
|
spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
|
||
|
|
spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
|
||
|
|
|
||
|
|
for (i = 0; i < ARRAY_SIZE(hdmi_codec_channel_alloc); i++, cap++) {
|
||
|
|
/* If spk_alloc == 0, HDMI is unplugged return stereo config*/
|
||
|
|
if (!spk_alloc && cap->ca_id == 0)
|
||
|
|
return i;
|
||
|
|
if (cap->n_ch != channels)
|
||
|
|
continue;
|
||
|
|
if (!(cap->mask == (spk_mask & cap->mask)))
|
||
|
|
continue;
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol,
|
||
|
|
struct snd_ctl_elem_value *ucontrol)
|
||
|
|
{
|
||
|
|
unsigned const char *map;
|
||
|
|
unsigned int i;
|
||
|
|
struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
|
||
|
|
struct hdmi_codec_priv *hcp = info->private_data;
|
||
|
|
|
||
|
|
map = info->chmap[hcp->chmap_idx].map;
|
||
|
|
|
||
|
|
for (i = 0; i < info->max_channels; i++) {
|
||
|
|
if (hcp->chmap_idx == HDMI_CODEC_CHMAP_IDX_UNKNOWN)
|
||
|
|
ucontrol->value.integer.value[i] = 0;
|
||
|
|
else
|
||
|
|
ucontrol->value.integer.value[i] = map[i];
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int hdmi_codec_new_stream(struct snd_pcm_substream *substream,
|
||
|
|
struct snd_soc_dai *dai)
|
||
|
|
{
|
||
|
|
struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
|
||
|
|
int ret = 0;
|
||
|
|
|
||
|
|
mutex_lock(&hcp->current_stream_lock);
|
||
|
|
if (!hcp->current_stream) {
|
||
|
|
hcp->current_stream = substream;
|
||
|
|
} else if (hcp->current_stream != substream) {
|
||
|
|
dev_err(dai->dev, "Only one simultaneous stream supported!\n");
|
||
|
|
ret = -EINVAL;
|
||
|
|
}
|
||
|
|
mutex_unlock(&hcp->current_stream_lock);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int hdmi_codec_startup(struct snd_pcm_substream *substream,
|
||
|
|
struct snd_soc_dai *dai)
|
||
|
|
{
|
||
|
|
struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
|
||
|
|
int ret = 0;
|
||
|
|
|
||
|
|
dev_dbg(dai->dev, "%s()\n", __func__);
|
||
|
|
|
||
|
|
ret = hdmi_codec_new_stream(substream, dai);
|
||
|
|
if (ret)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
if (hcp->hcd.ops->audio_startup) {
|
||
|
|
ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data);
|
||
|
|
if (ret) {
|
||
|
|
mutex_lock(&hcp->current_stream_lock);
|
||
|
|
hcp->current_stream = NULL;
|
||
|
|
mutex_unlock(&hcp->current_stream_lock);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (hcp->hcd.ops->get_eld) {
|
||
|
|
ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data,
|
||
|
|
hcp->eld, sizeof(hcp->eld));
|
||
|
|
|
||
|
|
if (!ret) {
|
||
|
|
ret = snd_pcm_hw_constraint_eld(substream->runtime,
|
||
|
|
hcp->eld);
|
||
|
|
if (ret)
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
/* Select chmap supported */
|
||
|
|
hdmi_codec_eld_chmap(hcp);
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
|
||
|
|
struct snd_soc_dai *dai)
|
||
|
|
{
|
||
|
|
struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
|
||
|
|
|
||
|
|
dev_dbg(dai->dev, "%s()\n", __func__);
|
||
|
|
|
||
|
|
WARN_ON(hcp->current_stream != substream);
|
||
|
|
|
||
|
|
hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
|
||
|
|
hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
|
||
|
|
|
||
|
|
mutex_lock(&hcp->current_stream_lock);
|
||
|
|
hcp->current_stream = NULL;
|
||
|
|
mutex_unlock(&hcp->current_stream_lock);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
|
||
|
|
struct snd_pcm_hw_params *params,
|
||
|
|
struct snd_soc_dai *dai)
|
||
|
|
{
|
||
|
|
struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
|
||
|
|
struct hdmi_codec_params hp = {
|
||
|
|
.iec = {
|
||
|
|
.status = { 0 },
|
||
|
|
.subcode = { 0 },
|
||
|
|
.pad = 0,
|
||
|
|
.dig_subframe = { 0 },
|
||
|
|
}
|
||
|
|
};
|
||
|
|
int ret, idx;
|
||
|
|
|
||
|
|
dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
|
||
|
|
params_width(params), params_rate(params),
|
||
|
|
params_channels(params));
|
||
|
|
|
||
|
|
if (params_width(params) > 24)
|
||
|
|
params->msbits = 24;
|
||
|
|
|
||
|
|
ret = snd_pcm_create_iec958_consumer_hw_params(params, hp.iec.status,
|
||
|
|
sizeof(hp.iec.status));
|
||
|
|
if (ret < 0) {
|
||
|
|
dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
|
||
|
|
ret);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = hdmi_codec_new_stream(substream, dai);
|
||
|
|
if (ret)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
hdmi_audio_infoframe_init(&hp.cea);
|
||
|
|
hp.cea.channels = params_channels(params);
|
||
|
|
hp.cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
|
||
|
|
hp.cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
|
||
|
|
hp.cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
|
||
|
|
|
||
|
|
/* Select a channel allocation that matches with ELD and pcm channels */
|
||
|
|
idx = hdmi_codec_get_ch_alloc_table_idx(hcp, hp.cea.channels);
|
||
|
|
if (idx < 0) {
|
||
|
|
dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
|
||
|
|
idx);
|
||
|
|
hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
|
||
|
|
return idx;
|
||
|
|
}
|
||
|
|
hp.cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id;
|
||
|
|
hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id;
|
||
|
|
|
||
|
|
hp.sample_width = params_width(params);
|
||
|
|
hp.sample_rate = params_rate(params);
|
||
|
|
hp.channels = params_channels(params);
|
||
|
|
|
||
|
|
return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
|
||
|
|
&hcp->daifmt[dai->id], &hp);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int hdmi_codec_set_fmt(struct snd_soc_dai *dai,
|
||
|
|
unsigned int fmt)
|
||
|
|
{
|
||
|
|
struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
|
||
|
|
struct hdmi_codec_daifmt cf = { 0 };
|
||
|
|
int ret = 0;
|
||
|
|
|
||
|
|
dev_dbg(dai->dev, "%s()\n", __func__);
|
||
|
|
|
||
|
|
if (dai->id == DAI_ID_SPDIF) {
|
||
|
|
cf.fmt = HDMI_SPDIF;
|
||
|
|
} else {
|
||
|
|
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
|
||
|
|
case SND_SOC_DAIFMT_CBM_CFM:
|
||
|
|
cf.bit_clk_master = 1;
|
||
|
|
cf.frame_clk_master = 1;
|
||
|
|
break;
|
||
|
|
case SND_SOC_DAIFMT_CBS_CFM:
|
||
|
|
cf.frame_clk_master = 1;
|
||
|
|
break;
|
||
|
|
case SND_SOC_DAIFMT_CBM_CFS:
|
||
|
|
cf.bit_clk_master = 1;
|
||
|
|
break;
|
||
|
|
case SND_SOC_DAIFMT_CBS_CFS:
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
|
||
|
|
case SND_SOC_DAIFMT_NB_NF:
|
||
|
|
break;
|
||
|
|
case SND_SOC_DAIFMT_NB_IF:
|
||
|
|
cf.frame_clk_inv = 1;
|
||
|
|
break;
|
||
|
|
case SND_SOC_DAIFMT_IB_NF:
|
||
|
|
cf.bit_clk_inv = 1;
|
||
|
|
break;
|
||
|
|
case SND_SOC_DAIFMT_IB_IF:
|
||
|
|
cf.frame_clk_inv = 1;
|
||
|
|
cf.bit_clk_inv = 1;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
|
||
|
|
case SND_SOC_DAIFMT_I2S:
|
||
|
|
cf.fmt = HDMI_I2S;
|
||
|
|
break;
|
||
|
|
case SND_SOC_DAIFMT_DSP_A:
|
||
|
|
cf.fmt = HDMI_DSP_A;
|
||
|
|
break;
|
||
|
|
case SND_SOC_DAIFMT_DSP_B:
|
||
|
|
cf.fmt = HDMI_DSP_B;
|
||
|
|
break;
|
||
|
|
case SND_SOC_DAIFMT_RIGHT_J:
|
||
|
|
cf.fmt = HDMI_RIGHT_J;
|
||
|
|
break;
|
||
|
|
case SND_SOC_DAIFMT_LEFT_J:
|
||
|
|
cf.fmt = HDMI_LEFT_J;
|
||
|
|
break;
|
||
|
|
case SND_SOC_DAIFMT_AC97:
|
||
|
|
cf.fmt = HDMI_AC97;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
dev_err(dai->dev, "Invalid DAI interface format\n");
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
hcp->daifmt[dai->id] = cf;
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int hdmi_codec_digital_mute(struct snd_soc_dai *dai, int mute)
|
||
|
|
{
|
||
|
|
struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
|
||
|
|
|
||
|
|
dev_dbg(dai->dev, "%s()\n", __func__);
|
||
|
|
|
||
|
|
if (hcp->hcd.ops->digital_mute)
|
||
|
|
return hcp->hcd.ops->digital_mute(dai->dev->parent,
|
||
|
|
hcp->hcd.data, mute);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct snd_soc_dai_ops hdmi_dai_ops = {
|
||
|
|
.startup = hdmi_codec_startup,
|
||
|
|
.shutdown = hdmi_codec_shutdown,
|
||
|
|
.hw_params = hdmi_codec_hw_params,
|
||
|
|
.set_fmt = hdmi_codec_set_fmt,
|
||
|
|
.digital_mute = hdmi_codec_digital_mute,
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
#define HDMI_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
|
||
|
|
SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
|
||
|
|
SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\
|
||
|
|
SNDRV_PCM_RATE_192000)
|
||
|
|
|
||
|
|
#define SPDIF_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
|
||
|
|
SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
|
||
|
|
SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
|
||
|
|
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This list is only for formats allowed on the I2S bus. So there is
|
||
|
|
* some formats listed that are not supported by HDMI interface. For
|
||
|
|
* instance allowing the 32-bit formats enables 24-precision with CPU
|
||
|
|
* DAIs that do not support 24-bit formats. If the extra formats cause
|
||
|
|
* problems, we should add the video side driver an option to disable
|
||
|
|
* them.
|
||
|
|
*/
|
||
|
|
#define I2S_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
|
||
|
|
SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
|
||
|
|
SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
|
||
|
|
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE |\
|
||
|
|
SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE)
|
||
|
|
|
||
|
|
static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
|
||
|
|
struct snd_soc_dai *dai)
|
||
|
|
{
|
||
|
|
struct snd_soc_dai_driver *drv = dai->driver;
|
||
|
|
struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
|
||
|
|
struct snd_kcontrol *kctl;
|
||
|
|
struct snd_kcontrol_new hdmi_eld_ctl = {
|
||
|
|
.access = SNDRV_CTL_ELEM_ACCESS_READ |
|
||
|
|
SNDRV_CTL_ELEM_ACCESS_VOLATILE,
|
||
|
|
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
|
||
|
|
.name = "ELD",
|
||
|
|
.info = hdmi_eld_ctl_info,
|
||
|
|
.get = hdmi_eld_ctl_get,
|
||
|
|
.device = rtd->pcm->device,
|
||
|
|
};
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
dev_dbg(dai->dev, "%s()\n", __func__);
|
||
|
|
|
||
|
|
ret = snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
|
||
|
|
NULL, drv->playback.channels_max, 0,
|
||
|
|
&hcp->chmap_info);
|
||
|
|
if (ret < 0)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
/* override handlers */
|
||
|
|
hcp->chmap_info->private_data = hcp;
|
||
|
|
hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get;
|
||
|
|
|
||
|
|
/* default chmap supported is stereo */
|
||
|
|
hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
|
||
|
|
hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
|
||
|
|
|
||
|
|
/* add ELD ctl with the device number corresponding to the PCM stream */
|
||
|
|
kctl = snd_ctl_new1(&hdmi_eld_ctl, dai->component);
|
||
|
|
if (!kctl)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
return snd_ctl_add(rtd->card->snd_card, kctl);
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct snd_soc_dai_driver hdmi_i2s_dai = {
|
||
|
|
.name = "i2s-hifi",
|
||
|
|
.id = DAI_ID_I2S,
|
||
|
|
.playback = {
|
||
|
|
.stream_name = "I2S Playback",
|
||
|
|
.channels_min = 2,
|
||
|
|
.channels_max = 8,
|
||
|
|
.rates = HDMI_RATES,
|
||
|
|
.formats = I2S_FORMATS,
|
||
|
|
.sig_bits = 24,
|
||
|
|
},
|
||
|
|
.ops = &hdmi_dai_ops,
|
||
|
|
.pcm_new = hdmi_codec_pcm_new,
|
||
|
|
};
|
||
|
|
|
||
|
|
static const struct snd_soc_dai_driver hdmi_spdif_dai = {
|
||
|
|
.name = "spdif-hifi",
|
||
|
|
.id = DAI_ID_SPDIF,
|
||
|
|
.playback = {
|
||
|
|
.stream_name = "SPDIF Playback",
|
||
|
|
.channels_min = 2,
|
||
|
|
.channels_max = 2,
|
||
|
|
.rates = HDMI_RATES,
|
||
|
|
.formats = SPDIF_FORMATS,
|
||
|
|
},
|
||
|
|
.ops = &hdmi_dai_ops,
|
||
|
|
.pcm_new = hdmi_codec_pcm_new,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
|
||
|
|
struct device_node *endpoint)
|
||
|
|
{
|
||
|
|
struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
|
||
|
|
int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */
|
||
|
|
|
||
|
|
if (hcp->hcd.ops->get_dai_id)
|
||
|
|
ret = hcp->hcd.ops->get_dai_id(component, endpoint);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct snd_soc_codec_driver hdmi_codec = {
|
||
|
|
.component_driver = {
|
||
|
|
.dapm_widgets = hdmi_widgets,
|
||
|
|
.num_dapm_widgets = ARRAY_SIZE(hdmi_widgets),
|
||
|
|
.dapm_routes = hdmi_routes,
|
||
|
|
.num_dapm_routes = ARRAY_SIZE(hdmi_routes),
|
||
|
|
.of_xlate_dai_id = hdmi_of_xlate_dai_id,
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
static int hdmi_codec_probe(struct platform_device *pdev)
|
||
|
|
{
|
||
|
|
struct hdmi_codec_pdata *hcd = pdev->dev.platform_data;
|
||
|
|
struct device *dev = &pdev->dev;
|
||
|
|
struct hdmi_codec_priv *hcp;
|
||
|
|
int dai_count, i = 0;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
dev_dbg(dev, "%s()\n", __func__);
|
||
|
|
|
||
|
|
if (!hcd) {
|
||
|
|
dev_err(dev, "%s: No plalform data\n", __func__);
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
dai_count = hcd->i2s + hcd->spdif;
|
||
|
|
if (dai_count < 1 || !hcd->ops || !hcd->ops->hw_params ||
|
||
|
|
!hcd->ops->audio_shutdown) {
|
||
|
|
dev_err(dev, "%s: Invalid parameters\n", __func__);
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL);
|
||
|
|
if (!hcp)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
hcp->hcd = *hcd;
|
||
|
|
mutex_init(&hcp->current_stream_lock);
|
||
|
|
|
||
|
|
hcp->daidrv = devm_kzalloc(dev, dai_count * sizeof(*hcp->daidrv),
|
||
|
|
GFP_KERNEL);
|
||
|
|
if (!hcp->daidrv)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
if (hcd->i2s) {
|
||
|
|
hcp->daidrv[i] = hdmi_i2s_dai;
|
||
|
|
hcp->daidrv[i].playback.channels_max =
|
||
|
|
hcd->max_i2s_channels;
|
||
|
|
i++;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (hcd->spdif)
|
||
|
|
hcp->daidrv[i] = hdmi_spdif_dai;
|
||
|
|
|
||
|
|
ret = snd_soc_register_codec(dev, &hdmi_codec, hcp->daidrv,
|
||
|
|
dai_count);
|
||
|
|
if (ret) {
|
||
|
|
dev_err(dev, "%s: snd_soc_register_codec() failed (%d)\n",
|
||
|
|
__func__, ret);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
dev_set_drvdata(dev, hcp);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int hdmi_codec_remove(struct platform_device *pdev)
|
||
|
|
{
|
||
|
|
struct device *dev = &pdev->dev;
|
||
|
|
struct hdmi_codec_priv *hcp;
|
||
|
|
|
||
|
|
hcp = dev_get_drvdata(dev);
|
||
|
|
kfree(hcp->chmap_info);
|
||
|
|
snd_soc_unregister_codec(dev);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct platform_driver hdmi_codec_driver = {
|
||
|
|
.driver = {
|
||
|
|
.name = HDMI_CODEC_DRV_NAME,
|
||
|
|
},
|
||
|
|
.probe = hdmi_codec_probe,
|
||
|
|
.remove = hdmi_codec_remove,
|
||
|
|
};
|
||
|
|
|
||
|
|
module_platform_driver(hdmi_codec_driver);
|
||
|
|
|
||
|
|
MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>");
|
||
|
|
MODULE_DESCRIPTION("HDMI Audio Codec Driver");
|
||
|
|
MODULE_LICENSE("GPL");
|
||
|
|
MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME);
|