2017-01-25 06:57:52 +08:00
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/*
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* intel_hdmi_audio.c - Intel HDMI audio driver
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*
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* Copyright (C) 2016 Intel Corp
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* Authors: Sailaja Bandarupalli <sailaja.bandarupalli@intel.com>
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* Ramesh Babu K V <ramesh.babu@intel.com>
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* Vaibhav Agarwal <vaibhav.agarwal@intel.com>
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* Jerome Anand <jerome.anand@intel.com>
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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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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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* ALSA driver for Intel HDMI audio
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*/
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#define pr_fmt(fmt) "had: " fmt
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/acpi.h>
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#include <asm/cacheflush.h>
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#include <sound/pcm.h>
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#include <sound/core.h>
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#include <sound/pcm_params.h>
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#include <sound/initval.h>
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#include <sound/control.h>
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#include <sound/initval.h>
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#include "intel_hdmi_audio.h"
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/*standard module options for ALSA. This module supports only one card*/
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static int hdmi_card_index = SNDRV_DEFAULT_IDX1;
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static char *hdmi_card_id = SNDRV_DEFAULT_STR1;
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module_param_named(index, hdmi_card_index, int, 0444);
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MODULE_PARM_DESC(index,
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"Index value for INTEL Intel HDMI Audio controller.");
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module_param_named(id, hdmi_card_id, charp, 0444);
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MODULE_PARM_DESC(id,
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"ID string for INTEL Intel HDMI Audio controller.");
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/*
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* ELD SA bits in the CEA Speaker Allocation data block
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*/
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static int eld_speaker_allocation_bits[] = {
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[0] = FL | FR,
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[1] = LFE,
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[2] = FC,
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[3] = RL | RR,
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[4] = RC,
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[5] = FLC | FRC,
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[6] = RLC | RRC,
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/* the following are not defined in ELD yet */
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[7] = 0,
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};
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/*
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* This is an ordered list!
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*
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* The preceding ones have better chances to be selected by
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* hdmi_channel_allocation().
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*/
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static struct cea_channel_speaker_allocation channel_allocations[] = {
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/* channel: 7 6 5 4 3 2 1 0 */
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{ .ca_index = 0x00, .speakers = { 0, 0, 0, 0, 0, 0, FR, FL } },
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/* 2.1 */
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{ .ca_index = 0x01, .speakers = { 0, 0, 0, 0, 0, LFE, FR, FL } },
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/* Dolby Surround */
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{ .ca_index = 0x02, .speakers = { 0, 0, 0, 0, FC, 0, FR, FL } },
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/* surround40 */
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{ .ca_index = 0x08, .speakers = { 0, 0, RR, RL, 0, 0, FR, FL } },
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/* surround41 */
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{ .ca_index = 0x09, .speakers = { 0, 0, RR, RL, 0, LFE, FR, FL } },
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/* surround50 */
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{ .ca_index = 0x0a, .speakers = { 0, 0, RR, RL, FC, 0, FR, FL } },
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/* surround51 */
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{ .ca_index = 0x0b, .speakers = { 0, 0, RR, RL, FC, LFE, FR, FL } },
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/* 6.1 */
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{ .ca_index = 0x0f, .speakers = { 0, RC, RR, RL, FC, LFE, FR, FL } },
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/* surround71 */
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{ .ca_index = 0x13, .speakers = { RRC, RLC, RR, RL, FC, LFE, FR, FL } },
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{ .ca_index = 0x03, .speakers = { 0, 0, 0, 0, FC, LFE, FR, FL } },
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{ .ca_index = 0x04, .speakers = { 0, 0, 0, RC, 0, 0, FR, FL } },
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{ .ca_index = 0x05, .speakers = { 0, 0, 0, RC, 0, LFE, FR, FL } },
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{ .ca_index = 0x06, .speakers = { 0, 0, 0, RC, FC, 0, FR, FL } },
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{ .ca_index = 0x07, .speakers = { 0, 0, 0, RC, FC, LFE, FR, FL } },
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{ .ca_index = 0x0c, .speakers = { 0, RC, RR, RL, 0, 0, FR, FL } },
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{ .ca_index = 0x0d, .speakers = { 0, RC, RR, RL, 0, LFE, FR, FL } },
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{ .ca_index = 0x0e, .speakers = { 0, RC, RR, RL, FC, 0, FR, FL } },
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{ .ca_index = 0x10, .speakers = { RRC, RLC, RR, RL, 0, 0, FR, FL } },
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{ .ca_index = 0x11, .speakers = { RRC, RLC, RR, RL, 0, LFE, FR, FL } },
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{ .ca_index = 0x12, .speakers = { RRC, RLC, RR, RL, FC, 0, FR, FL } },
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{ .ca_index = 0x14, .speakers = { FRC, FLC, 0, 0, 0, 0, FR, FL } },
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{ .ca_index = 0x15, .speakers = { FRC, FLC, 0, 0, 0, LFE, FR, FL } },
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{ .ca_index = 0x16, .speakers = { FRC, FLC, 0, 0, FC, 0, FR, FL } },
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{ .ca_index = 0x17, .speakers = { FRC, FLC, 0, 0, FC, LFE, FR, FL } },
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{ .ca_index = 0x18, .speakers = { FRC, FLC, 0, RC, 0, 0, FR, FL } },
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{ .ca_index = 0x19, .speakers = { FRC, FLC, 0, RC, 0, LFE, FR, FL } },
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{ .ca_index = 0x1a, .speakers = { FRC, FLC, 0, RC, FC, 0, FR, FL } },
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{ .ca_index = 0x1b, .speakers = { FRC, FLC, 0, RC, FC, LFE, FR, FL } },
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{ .ca_index = 0x1c, .speakers = { FRC, FLC, RR, RL, 0, 0, FR, FL } },
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{ .ca_index = 0x1d, .speakers = { FRC, FLC, RR, RL, 0, LFE, FR, FL } },
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{ .ca_index = 0x1e, .speakers = { FRC, FLC, RR, RL, FC, 0, FR, FL } },
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{ .ca_index = 0x1f, .speakers = { FRC, FLC, RR, RL, FC, LFE, FR, FL } },
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};
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static struct channel_map_table map_tables[] = {
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{ SNDRV_CHMAP_FL, 0x00, FL },
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{ SNDRV_CHMAP_FR, 0x01, FR },
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{ SNDRV_CHMAP_RL, 0x04, RL },
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{ SNDRV_CHMAP_RR, 0x05, RR },
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{ SNDRV_CHMAP_LFE, 0x02, LFE },
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{ SNDRV_CHMAP_FC, 0x03, FC },
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{ SNDRV_CHMAP_RLC, 0x06, RLC },
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{ SNDRV_CHMAP_RRC, 0x07, RRC },
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{} /* terminator */
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};
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/* hardware capability structure */
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static const struct snd_pcm_hardware snd_intel_hadstream = {
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.info = (SNDRV_PCM_INFO_INTERLEAVED |
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SNDRV_PCM_INFO_DOUBLE |
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SNDRV_PCM_INFO_MMAP|
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SNDRV_PCM_INFO_MMAP_VALID |
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SNDRV_PCM_INFO_BATCH),
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.formats = (SNDRV_PCM_FMTBIT_S24 |
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SNDRV_PCM_FMTBIT_U24),
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.rates = SNDRV_PCM_RATE_32000 |
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SNDRV_PCM_RATE_44100 |
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SNDRV_PCM_RATE_48000 |
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SNDRV_PCM_RATE_88200 |
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SNDRV_PCM_RATE_96000 |
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SNDRV_PCM_RATE_176400 |
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SNDRV_PCM_RATE_192000,
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.rate_min = HAD_MIN_RATE,
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.rate_max = HAD_MAX_RATE,
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.channels_min = HAD_MIN_CHANNEL,
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.channels_max = HAD_MAX_CHANNEL,
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.buffer_bytes_max = HAD_MAX_BUFFER,
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.period_bytes_min = HAD_MIN_PERIOD_BYTES,
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.period_bytes_max = HAD_MAX_PERIOD_BYTES,
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.periods_min = HAD_MIN_PERIODS,
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.periods_max = HAD_MAX_PERIODS,
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.fifo_size = HAD_FIFO_SIZE,
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};
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/* Register access functions */
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int had_get_hwstate(struct snd_intelhad *intelhaddata)
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{
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/* Check for device presence -SW state */
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if (intelhaddata->drv_status == HAD_DRV_DISCONNECTED) {
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pr_debug("%s:Device not connected:%d\n", __func__,
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intelhaddata->drv_status);
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return -ENODEV;
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}
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return 0;
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}
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2017-01-31 00:23:39 +08:00
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int had_get_caps(struct snd_intelhad *intelhaddata,
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enum had_caps_list query, void *caps)
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2017-01-25 06:57:52 +08:00
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{
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2017-01-31 01:09:01 +08:00
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struct platform_device *pdev = to_platform_device(intelhaddata->dev);
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2017-01-25 06:57:52 +08:00
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int retval;
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retval = had_get_hwstate(intelhaddata);
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if (!retval)
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2017-01-31 01:09:01 +08:00
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retval = mid_hdmi_audio_get_caps(pdev, query, caps);
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2017-01-25 06:57:52 +08:00
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return retval;
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}
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2017-01-31 00:23:39 +08:00
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int had_set_caps(struct snd_intelhad *intelhaddata,
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enum had_caps_list set_element, void *caps)
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2017-01-25 06:57:52 +08:00
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{
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2017-01-31 01:09:01 +08:00
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struct platform_device *pdev = to_platform_device(intelhaddata->dev);
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2017-01-25 06:57:52 +08:00
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int retval;
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retval = had_get_hwstate(intelhaddata);
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if (!retval)
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2017-01-31 01:09:01 +08:00
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retval = mid_hdmi_audio_set_caps(pdev, set_element, caps);
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2017-01-25 06:57:52 +08:00
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return retval;
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}
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2017-01-31 00:23:39 +08:00
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int had_read_register(struct snd_intelhad *intelhaddata, u32 offset, u32 *data)
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2017-01-25 06:57:52 +08:00
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{
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2017-01-31 01:09:01 +08:00
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struct platform_device *pdev = to_platform_device(intelhaddata->dev);
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2017-01-25 06:57:52 +08:00
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int retval;
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retval = had_get_hwstate(intelhaddata);
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if (!retval)
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2017-01-31 01:09:01 +08:00
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retval = mid_hdmi_audio_read(pdev, offset, data);
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2017-01-25 06:57:52 +08:00
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return retval;
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}
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2017-01-31 00:23:39 +08:00
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int had_write_register(struct snd_intelhad *intelhaddata, u32 offset, u32 data)
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2017-01-25 06:57:52 +08:00
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{
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2017-01-31 01:09:01 +08:00
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struct platform_device *pdev = to_platform_device(intelhaddata->dev);
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2017-01-25 06:57:52 +08:00
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int retval;
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retval = had_get_hwstate(intelhaddata);
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if (!retval)
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2017-01-31 01:09:01 +08:00
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retval = mid_hdmi_audio_write(pdev, offset, data);
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2017-01-25 06:57:52 +08:00
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return retval;
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}
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2017-01-31 00:23:39 +08:00
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int had_read_modify(struct snd_intelhad *intelhaddata, u32 offset,
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u32 data, u32 mask)
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2017-01-25 06:57:52 +08:00
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{
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2017-01-31 01:09:01 +08:00
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struct platform_device *pdev = to_platform_device(intelhaddata->dev);
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2017-01-25 06:57:52 +08:00
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int retval;
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retval = had_get_hwstate(intelhaddata);
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if (!retval)
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2017-01-31 01:09:01 +08:00
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retval = mid_hdmi_audio_rmw(pdev, offset, data, mask);
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2017-01-25 06:57:52 +08:00
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return retval;
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}
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/**
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* function to read-modify
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* AUD_CONFIG register on VLV2.The had_read_modify() function should not
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* directly be used on VLV2 for updating AUD_CONFIG register.
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* This is because:
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* Bit6 of AUD_CONFIG register is writeonly due to a silicon bug on VLV2
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* HDMI IP. As a result a read-modify of AUD_CONFIG regiter will always
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* clear bit6. AUD_CONFIG[6:4] represents the "channels" field of the
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* register. This field should be 1xy binary for configuration with 6 or
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* more channels. Read-modify of AUD_CONFIG (Eg. for enabling audio)
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* causes the "channels" field to be updated as 0xy binary resulting in
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* bad audio. The fix is to always write the AUD_CONFIG[6:4] with
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* appropriate value when doing read-modify of AUD_CONFIG register.
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*
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* @substream: the current substream or NULL if no active substream
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* @data : data to be written
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* @mask : mask
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*
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*/
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static int had_read_modify_aud_config_v2(struct snd_pcm_substream *substream,
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u32 data, u32 mask)
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{
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2017-01-31 00:23:39 +08:00
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struct snd_intelhad *intelhaddata = snd_pcm_substream_chip(substream);
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2017-01-25 06:57:52 +08:00
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union aud_cfg cfg_val = {.cfg_regval = 0};
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u8 channels;
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/*
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* If substream is NULL, there is no active stream.
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* In this case just set channels to 2
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*/
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if (substream)
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channels = substream->runtime->channels;
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else
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channels = 2;
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cfg_val.cfg_regx_v2.num_ch = channels - 2;
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data = data | cfg_val.cfg_regval;
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mask = mask | AUD_CONFIG_CH_MASK_V2;
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pr_debug("%s : data = %x, mask =%x\n", __func__, data, mask);
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2017-01-31 00:23:39 +08:00
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return had_read_modify(intelhaddata, AUD_CONFIG, data, mask);
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2017-01-25 06:57:52 +08:00
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}
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2017-01-30 23:09:11 +08:00
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void snd_intelhad_enable_audio(struct snd_pcm_substream *substream, u8 enable)
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2017-01-25 06:57:52 +08:00
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{
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had_read_modify_aud_config_v2(substream, enable, BIT(0));
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}
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2017-01-31 00:23:39 +08:00
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static void snd_intelhad_reset_audio(struct snd_intelhad *intelhaddata,
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u8 reset)
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2017-01-25 06:57:52 +08:00
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{
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2017-01-31 00:23:39 +08:00
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had_write_register(intelhaddata, AUD_HDMI_STATUS_v2, reset);
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2017-01-25 06:57:52 +08:00
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}
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/**
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* initialize audio channel status registers
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* This function is called in the prepare callback
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*/
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static int had_prog_status_reg(struct snd_pcm_substream *substream,
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struct snd_intelhad *intelhaddata)
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{
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union aud_cfg cfg_val = {.cfg_regval = 0};
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|
|
union aud_ch_status_0 ch_stat0 = {.status_0_regval = 0};
|
|
|
|
union aud_ch_status_1 ch_stat1 = {.status_1_regval = 0};
|
|
|
|
int format;
|
|
|
|
|
|
|
|
pr_debug("Entry %s\n", __func__);
|
|
|
|
|
|
|
|
ch_stat0.status_0_regx.lpcm_id = (intelhaddata->aes_bits &
|
|
|
|
IEC958_AES0_NONAUDIO)>>1;
|
|
|
|
ch_stat0.status_0_regx.clk_acc = (intelhaddata->aes_bits &
|
|
|
|
IEC958_AES3_CON_CLOCK)>>4;
|
2017-01-30 22:58:15 +08:00
|
|
|
cfg_val.cfg_regx_v2.val_bit = ch_stat0.status_0_regx.lpcm_id;
|
2017-01-25 06:57:52 +08:00
|
|
|
|
|
|
|
switch (substream->runtime->rate) {
|
|
|
|
case AUD_SAMPLE_RATE_32:
|
|
|
|
ch_stat0.status_0_regx.samp_freq = CH_STATUS_MAP_32KHZ;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case AUD_SAMPLE_RATE_44_1:
|
|
|
|
ch_stat0.status_0_regx.samp_freq = CH_STATUS_MAP_44KHZ;
|
|
|
|
break;
|
|
|
|
case AUD_SAMPLE_RATE_48:
|
|
|
|
ch_stat0.status_0_regx.samp_freq = CH_STATUS_MAP_48KHZ;
|
|
|
|
break;
|
|
|
|
case AUD_SAMPLE_RATE_88_2:
|
|
|
|
ch_stat0.status_0_regx.samp_freq = CH_STATUS_MAP_88KHZ;
|
|
|
|
break;
|
|
|
|
case AUD_SAMPLE_RATE_96:
|
|
|
|
ch_stat0.status_0_regx.samp_freq = CH_STATUS_MAP_96KHZ;
|
|
|
|
break;
|
|
|
|
case AUD_SAMPLE_RATE_176_4:
|
|
|
|
ch_stat0.status_0_regx.samp_freq = CH_STATUS_MAP_176KHZ;
|
|
|
|
break;
|
|
|
|
case AUD_SAMPLE_RATE_192:
|
|
|
|
ch_stat0.status_0_regx.samp_freq = CH_STATUS_MAP_192KHZ;
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
/* control should never come here */
|
|
|
|
return -EINVAL;
|
|
|
|
break;
|
|
|
|
|
|
|
|
}
|
2017-01-31 00:23:39 +08:00
|
|
|
had_write_register(intelhaddata,
|
|
|
|
AUD_CH_STATUS_0, ch_stat0.status_0_regval);
|
2017-01-25 06:57:52 +08:00
|
|
|
|
|
|
|
format = substream->runtime->format;
|
|
|
|
|
|
|
|
if (format == SNDRV_PCM_FORMAT_S16_LE) {
|
|
|
|
ch_stat1.status_1_regx.max_wrd_len = MAX_SMPL_WIDTH_20;
|
|
|
|
ch_stat1.status_1_regx.wrd_len = SMPL_WIDTH_16BITS;
|
|
|
|
} else if (format == SNDRV_PCM_FORMAT_S24_LE) {
|
|
|
|
ch_stat1.status_1_regx.max_wrd_len = MAX_SMPL_WIDTH_24;
|
|
|
|
ch_stat1.status_1_regx.wrd_len = SMPL_WIDTH_24BITS;
|
|
|
|
} else {
|
|
|
|
ch_stat1.status_1_regx.max_wrd_len = 0;
|
|
|
|
ch_stat1.status_1_regx.wrd_len = 0;
|
|
|
|
}
|
2017-01-31 00:23:39 +08:00
|
|
|
had_write_register(intelhaddata,
|
|
|
|
AUD_CH_STATUS_1, ch_stat1.status_1_regval);
|
2017-01-25 06:57:52 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2017-01-30 23:09:11 +08:00
|
|
|
/*
|
2017-01-25 06:57:52 +08:00
|
|
|
* function to initialize audio
|
|
|
|
* registers and buffer confgiuration registers
|
|
|
|
* This function is called in the prepare callback
|
|
|
|
*/
|
2017-01-30 23:09:11 +08:00
|
|
|
static int snd_intelhad_audio_ctrl(struct snd_pcm_substream *substream,
|
|
|
|
struct snd_intelhad *intelhaddata)
|
2017-01-25 06:57:52 +08:00
|
|
|
{
|
|
|
|
union aud_cfg cfg_val = {.cfg_regval = 0};
|
|
|
|
union aud_buf_config buf_cfg = {.buf_cfgval = 0};
|
|
|
|
u8 channels;
|
|
|
|
|
|
|
|
had_prog_status_reg(substream, intelhaddata);
|
|
|
|
|
|
|
|
buf_cfg.buf_cfg_regx_v2.audio_fifo_watermark = FIFO_THRESHOLD;
|
|
|
|
buf_cfg.buf_cfg_regx_v2.dma_fifo_watermark = DMA_FIFO_THRESHOLD;
|
|
|
|
buf_cfg.buf_cfg_regx_v2.aud_delay = 0;
|
2017-01-31 00:23:39 +08:00
|
|
|
had_write_register(intelhaddata, AUD_BUF_CONFIG, buf_cfg.buf_cfgval);
|
2017-01-25 06:57:52 +08:00
|
|
|
|
|
|
|
channels = substream->runtime->channels;
|
|
|
|
cfg_val.cfg_regx_v2.num_ch = channels - 2;
|
|
|
|
if (channels <= 2)
|
|
|
|
cfg_val.cfg_regx_v2.layout = LAYOUT0;
|
|
|
|
else
|
|
|
|
cfg_val.cfg_regx_v2.layout = LAYOUT1;
|
|
|
|
|
2017-02-01 04:16:52 +08:00
|
|
|
cfg_val.cfg_regx_v2.val_bit = 1;
|
2017-01-31 00:23:39 +08:00
|
|
|
had_write_register(intelhaddata, AUD_CONFIG, cfg_val.cfg_regval);
|
2017-01-25 06:57:52 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Compute derived values in channel_allocations[].
|
|
|
|
*/
|
|
|
|
static void init_channel_allocations(void)
|
|
|
|
{
|
|
|
|
int i, j;
|
|
|
|
struct cea_channel_speaker_allocation *p;
|
|
|
|
|
|
|
|
pr_debug("%s: Enter\n", __func__);
|
|
|
|
|
|
|
|
for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
|
|
|
|
p = channel_allocations + i;
|
|
|
|
p->channels = 0;
|
|
|
|
p->spk_mask = 0;
|
|
|
|
for (j = 0; j < ARRAY_SIZE(p->speakers); j++)
|
|
|
|
if (p->speakers[j]) {
|
|
|
|
p->channels++;
|
|
|
|
p->spk_mask |= p->speakers[j];
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The transformation takes two steps:
|
|
|
|
*
|
|
|
|
* eld->spk_alloc => (eld_speaker_allocation_bits[]) => spk_mask
|
|
|
|
* spk_mask => (channel_allocations[]) => ai->CA
|
|
|
|
*
|
|
|
|
* TODO: it could select the wrong CA from multiple candidates.
|
|
|
|
*/
|
|
|
|
static int snd_intelhad_channel_allocation(struct snd_intelhad *intelhaddata,
|
|
|
|
int channels)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
int ca = 0;
|
|
|
|
int spk_mask = 0;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* CA defaults to 0 for basic stereo audio
|
|
|
|
*/
|
|
|
|
if (channels <= 2)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* expand ELD's speaker allocation mask
|
|
|
|
*
|
|
|
|
* ELD tells the speaker mask in a compact(paired) form,
|
|
|
|
* expand ELD's notions to match the ones used by Audio InfoFrame.
|
|
|
|
*/
|
|
|
|
|
|
|
|
for (i = 0; i < ARRAY_SIZE(eld_speaker_allocation_bits); i++) {
|
|
|
|
if (intelhaddata->eeld.speaker_allocation_block & (1 << i))
|
|
|
|
spk_mask |= eld_speaker_allocation_bits[i];
|
|
|
|
}
|
|
|
|
|
|
|
|
/* search for the first working match in the CA table */
|
|
|
|
for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
|
|
|
|
if (channels == channel_allocations[i].channels &&
|
|
|
|
(spk_mask & channel_allocations[i].spk_mask) ==
|
|
|
|
channel_allocations[i].spk_mask) {
|
|
|
|
ca = channel_allocations[i].ca_index;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
pr_debug("HDMI: select CA 0x%x for %d\n", ca, channels);
|
|
|
|
|
|
|
|
return ca;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* from speaker bit mask to ALSA API channel position */
|
|
|
|
static int spk_to_chmap(int spk)
|
|
|
|
{
|
|
|
|
struct channel_map_table *t = map_tables;
|
|
|
|
|
|
|
|
for (; t->map; t++) {
|
|
|
|
if (t->spk_mask == spk)
|
|
|
|
return t->map;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void had_build_channel_allocation_map(struct snd_intelhad *intelhaddata)
|
|
|
|
{
|
|
|
|
int i = 0, c = 0;
|
|
|
|
int spk_mask = 0;
|
|
|
|
struct snd_pcm_chmap_elem *chmap;
|
|
|
|
u8 eld_high, eld_high_mask = 0xF0;
|
|
|
|
u8 high_msb;
|
|
|
|
|
|
|
|
chmap = kzalloc(sizeof(*chmap), GFP_KERNEL);
|
|
|
|
if (chmap == NULL) {
|
|
|
|
intelhaddata->chmap->chmap = NULL;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2017-01-31 00:23:39 +08:00
|
|
|
had_get_caps(intelhaddata, HAD_GET_ELD, &intelhaddata->eeld);
|
|
|
|
had_get_caps(intelhaddata, HAD_GET_DP_OUTPUT, &intelhaddata->dp_output);
|
2017-01-25 06:57:52 +08:00
|
|
|
|
|
|
|
pr_debug("eeld.speaker_allocation_block = %x\n",
|
|
|
|
intelhaddata->eeld.speaker_allocation_block);
|
|
|
|
|
|
|
|
/* WA: Fix the max channel supported to 8 */
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Sink may support more than 8 channels, if eld_high has more than
|
|
|
|
* one bit set. SOC supports max 8 channels.
|
|
|
|
* Refer eld_speaker_allocation_bits, for sink speaker allocation
|
|
|
|
*/
|
|
|
|
|
|
|
|
/* if 0x2F < eld < 0x4F fall back to 0x2f, else fall back to 0x4F */
|
|
|
|
eld_high = intelhaddata->eeld.speaker_allocation_block & eld_high_mask;
|
|
|
|
if ((eld_high & (eld_high-1)) && (eld_high > 0x1F)) {
|
|
|
|
/* eld_high & (eld_high-1): if more than 1 bit set */
|
|
|
|
/* 0x1F: 7 channels */
|
|
|
|
for (i = 1; i < 4; i++) {
|
|
|
|
high_msb = eld_high & (0x80 >> i);
|
|
|
|
if (high_msb) {
|
|
|
|
intelhaddata->eeld.speaker_allocation_block &=
|
|
|
|
high_msb | 0xF;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < ARRAY_SIZE(eld_speaker_allocation_bits); i++) {
|
|
|
|
if (intelhaddata->eeld.speaker_allocation_block & (1 << i))
|
|
|
|
spk_mask |= eld_speaker_allocation_bits[i];
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
|
|
|
|
if (spk_mask == channel_allocations[i].spk_mask) {
|
|
|
|
for (c = 0; c < channel_allocations[i].channels; c++) {
|
|
|
|
chmap->map[c] = spk_to_chmap(
|
|
|
|
channel_allocations[i].speakers[
|
|
|
|
(MAX_SPEAKERS - 1)-c]);
|
|
|
|
}
|
|
|
|
chmap->channels = channel_allocations[i].channels;
|
|
|
|
intelhaddata->chmap->chmap = chmap;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (i >= ARRAY_SIZE(channel_allocations)) {
|
|
|
|
intelhaddata->chmap->chmap = NULL;
|
|
|
|
kfree(chmap);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* ALSA API channel-map control callbacks
|
|
|
|
*/
|
|
|
|
static int had_chmap_ctl_info(struct snd_kcontrol *kcontrol,
|
|
|
|
struct snd_ctl_elem_info *uinfo)
|
|
|
|
{
|
|
|
|
struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
|
|
|
|
struct snd_intelhad *intelhaddata = info->private_data;
|
|
|
|
|
|
|
|
if (intelhaddata->drv_status == HAD_DRV_DISCONNECTED)
|
|
|
|
return -ENODEV;
|
|
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
|
|
|
|
uinfo->count = HAD_MAX_CHANNEL;
|
|
|
|
uinfo->value.integer.min = 0;
|
|
|
|
uinfo->value.integer.max = SNDRV_CHMAP_LAST;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int had_chmap_ctl_get(struct snd_kcontrol *kcontrol,
|
|
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
|
|
{
|
|
|
|
struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
|
|
|
|
struct snd_intelhad *intelhaddata = info->private_data;
|
|
|
|
int i = 0;
|
|
|
|
const struct snd_pcm_chmap_elem *chmap;
|
|
|
|
|
|
|
|
if (intelhaddata->drv_status == HAD_DRV_DISCONNECTED)
|
|
|
|
return -ENODEV;
|
|
|
|
if (intelhaddata->chmap->chmap == NULL)
|
|
|
|
return -ENODATA;
|
|
|
|
chmap = intelhaddata->chmap->chmap;
|
|
|
|
for (i = 0; i < chmap->channels; i++) {
|
|
|
|
ucontrol->value.integer.value[i] = chmap->map[i];
|
|
|
|
pr_debug("chmap->map[%d] = %d\n", i, chmap->map[i]);
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int had_register_chmap_ctls(struct snd_intelhad *intelhaddata,
|
|
|
|
struct snd_pcm *pcm)
|
|
|
|
{
|
|
|
|
int err = 0;
|
|
|
|
|
|
|
|
err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
|
|
|
|
NULL, 0, (unsigned long)intelhaddata,
|
|
|
|
&intelhaddata->chmap);
|
|
|
|
if (err < 0)
|
|
|
|
return err;
|
|
|
|
|
|
|
|
intelhaddata->chmap->private_data = intelhaddata;
|
|
|
|
intelhaddata->kctl = intelhaddata->chmap->kctl;
|
|
|
|
intelhaddata->kctl->info = had_chmap_ctl_info;
|
|
|
|
intelhaddata->kctl->get = had_chmap_ctl_get;
|
|
|
|
intelhaddata->chmap->chmap = NULL;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2017-01-30 23:09:11 +08:00
|
|
|
/*
|
|
|
|
* snd_intelhad_prog_dip - to initialize Data Island Packets registers
|
2017-01-25 06:57:52 +08:00
|
|
|
*
|
|
|
|
* @substream:substream for which the prepare function is called
|
|
|
|
* @intelhaddata:substream private data
|
|
|
|
*
|
|
|
|
* This function is called in the prepare callback
|
|
|
|
*/
|
2017-01-30 23:09:11 +08:00
|
|
|
static void snd_intelhad_prog_dip(struct snd_pcm_substream *substream,
|
|
|
|
struct snd_intelhad *intelhaddata)
|
2017-01-25 06:57:52 +08:00
|
|
|
{
|
|
|
|
int i;
|
|
|
|
union aud_ctrl_st ctrl_state = {.ctrl_val = 0};
|
|
|
|
union aud_info_frame2 frame2 = {.fr2_val = 0};
|
|
|
|
union aud_info_frame3 frame3 = {.fr3_val = 0};
|
|
|
|
u8 checksum = 0;
|
2017-02-01 04:16:52 +08:00
|
|
|
u32 info_frame;
|
2017-01-25 06:57:52 +08:00
|
|
|
int channels;
|
|
|
|
|
|
|
|
channels = substream->runtime->channels;
|
|
|
|
|
2017-01-31 00:23:39 +08:00
|
|
|
had_write_register(intelhaddata, AUD_CNTL_ST, ctrl_state.ctrl_val);
|
2017-01-25 06:57:52 +08:00
|
|
|
|
2017-02-01 04:16:52 +08:00
|
|
|
if (intelhaddata->dp_output) {
|
|
|
|
info_frame = DP_INFO_FRAME_WORD1;
|
|
|
|
frame2.fr2_val = 1;
|
|
|
|
} else {
|
|
|
|
info_frame = HDMI_INFO_FRAME_WORD1;
|
|
|
|
frame2.fr2_regx.chnl_cnt = substream->runtime->channels - 1;
|
2017-01-25 06:57:52 +08:00
|
|
|
|
2017-02-01 04:16:52 +08:00
|
|
|
frame3.fr3_regx.chnl_alloc = snd_intelhad_channel_allocation(
|
|
|
|
intelhaddata, channels);
|
2017-01-25 06:57:52 +08:00
|
|
|
|
2017-02-01 04:16:52 +08:00
|
|
|
/*Calculte the byte wide checksum for all valid DIP words*/
|
|
|
|
for (i = 0; i < BYTES_PER_WORD; i++)
|
|
|
|
checksum += (info_frame >> i*BITS_PER_BYTE) & MASK_BYTE0;
|
|
|
|
for (i = 0; i < BYTES_PER_WORD; i++)
|
|
|
|
checksum += (frame2.fr2_val >> i*BITS_PER_BYTE) & MASK_BYTE0;
|
|
|
|
for (i = 0; i < BYTES_PER_WORD; i++)
|
|
|
|
checksum += (frame3.fr3_val >> i*BITS_PER_BYTE) & MASK_BYTE0;
|
2017-01-25 06:57:52 +08:00
|
|
|
|
2017-02-01 04:16:52 +08:00
|
|
|
frame2.fr2_regx.chksum = -(checksum);
|
|
|
|
}
|
2017-01-25 06:57:52 +08:00
|
|
|
|
2017-01-31 00:23:39 +08:00
|
|
|
had_write_register(intelhaddata, AUD_HDMIW_INFOFR_v2, info_frame);
|
|
|
|
had_write_register(intelhaddata, AUD_HDMIW_INFOFR_v2, frame2.fr2_val);
|
|
|
|
had_write_register(intelhaddata, AUD_HDMIW_INFOFR_v2, frame3.fr3_val);
|
2017-01-25 06:57:52 +08:00
|
|
|
|
|
|
|
/* program remaining DIP words with zero */
|
|
|
|
for (i = 0; i < HAD_MAX_DIP_WORDS-VALID_DIP_WORDS; i++)
|
2017-01-31 00:23:39 +08:00
|
|
|
had_write_register(intelhaddata, AUD_HDMIW_INFOFR_v2, 0x0);
|
2017-01-25 06:57:52 +08:00
|
|
|
|
|
|
|
ctrl_state.ctrl_regx.dip_freq = 1;
|
|
|
|
ctrl_state.ctrl_regx.dip_en_sta = 1;
|
2017-01-31 00:23:39 +08:00
|
|
|
had_write_register(intelhaddata, AUD_CNTL_ST, ctrl_state.ctrl_val);
|
2017-01-25 06:57:52 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* snd_intelhad_prog_buffer - programs buffer
|
|
|
|
* address and length registers
|
|
|
|
*
|
|
|
|
* @substream:substream for which the prepare function is called
|
|
|
|
* @intelhaddata:substream private data
|
|
|
|
*
|
|
|
|
* This function programs ring buffer address and length into registers.
|
|
|
|
*/
|
|
|
|
int snd_intelhad_prog_buffer(struct snd_intelhad *intelhaddata,
|
|
|
|
int start, int end)
|
|
|
|
{
|
|
|
|
u32 ring_buf_addr, ring_buf_size, period_bytes;
|
|
|
|
u8 i, num_periods;
|
|
|
|
struct snd_pcm_substream *substream;
|
|
|
|
|
|
|
|
substream = intelhaddata->stream_info.had_substream;
|
|
|
|
if (!substream) {
|
|
|
|
pr_err("substream is NULL\n");
|
|
|
|
dump_stack();
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
ring_buf_addr = substream->runtime->dma_addr;
|
|
|
|
ring_buf_size = snd_pcm_lib_buffer_bytes(substream);
|
|
|
|
intelhaddata->stream_info.ring_buf_size = ring_buf_size;
|
|
|
|
period_bytes = frames_to_bytes(substream->runtime,
|
|
|
|
substream->runtime->period_size);
|
|
|
|
num_periods = substream->runtime->periods;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* buffer addr should be 64 byte aligned, period bytes
|
|
|
|
* will be used to calculate addr offset
|
|
|
|
*/
|
|
|
|
period_bytes &= ~0x3F;
|
|
|
|
|
|
|
|
/* Hardware supports MAX_PERIODS buffers */
|
|
|
|
if (end >= HAD_MAX_PERIODS)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
for (i = start; i <= end; i++) {
|
|
|
|
/* Program the buf registers with addr and len */
|
|
|
|
intelhaddata->buf_info[i].buf_addr = ring_buf_addr +
|
|
|
|
(i * period_bytes);
|
|
|
|
if (i < num_periods-1)
|
|
|
|
intelhaddata->buf_info[i].buf_size = period_bytes;
|
|
|
|
else
|
|
|
|
intelhaddata->buf_info[i].buf_size = ring_buf_size -
|
|
|
|
(period_bytes*i);
|
|
|
|
|
2017-01-31 00:23:39 +08:00
|
|
|
had_write_register(intelhaddata,
|
|
|
|
AUD_BUF_A_ADDR + (i * HAD_REG_WIDTH),
|
2017-01-25 06:57:52 +08:00
|
|
|
intelhaddata->buf_info[i].buf_addr |
|
|
|
|
BIT(0) | BIT(1));
|
2017-01-31 00:23:39 +08:00
|
|
|
had_write_register(intelhaddata,
|
|
|
|
AUD_BUF_A_LENGTH + (i * HAD_REG_WIDTH),
|
2017-01-25 06:57:52 +08:00
|
|
|
period_bytes);
|
|
|
|
intelhaddata->buf_info[i].is_valid = true;
|
|
|
|
}
|
|
|
|
pr_debug("%s:buf[%d-%d] addr=%#x and size=%d\n", __func__, start, end,
|
|
|
|
intelhaddata->buf_info[start].buf_addr,
|
|
|
|
intelhaddata->buf_info[start].buf_size);
|
|
|
|
intelhaddata->valid_buf_cnt = num_periods;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int snd_intelhad_read_len(struct snd_intelhad *intelhaddata)
|
|
|
|
{
|
|
|
|
int i, retval = 0;
|
|
|
|
u32 len[4];
|
|
|
|
|
|
|
|
for (i = 0; i < 4 ; i++) {
|
2017-01-31 00:23:39 +08:00
|
|
|
had_read_register(intelhaddata,
|
|
|
|
AUD_BUF_A_LENGTH + (i * HAD_REG_WIDTH),
|
|
|
|
&len[i]);
|
2017-01-25 06:57:52 +08:00
|
|
|
if (!len[i])
|
|
|
|
retval++;
|
|
|
|
}
|
|
|
|
if (retval != 1) {
|
|
|
|
for (i = 0; i < 4 ; i++)
|
|
|
|
pr_debug("buf[%d] size=%d\n", i, len[i]);
|
|
|
|
}
|
|
|
|
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
2017-02-01 04:16:52 +08:00
|
|
|
static int had_calculate_maud_value(u32 aud_samp_freq, u32 link_rate)
|
|
|
|
{
|
|
|
|
u32 maud_val;
|
|
|
|
|
|
|
|
/* Select maud according to DP 1.2 spec*/
|
|
|
|
if (link_rate == DP_2_7_GHZ) {
|
|
|
|
switch (aud_samp_freq) {
|
|
|
|
case AUD_SAMPLE_RATE_32:
|
|
|
|
maud_val = AUD_SAMPLE_RATE_32_DP_2_7_MAUD_VAL;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case AUD_SAMPLE_RATE_44_1:
|
|
|
|
maud_val = AUD_SAMPLE_RATE_44_1_DP_2_7_MAUD_VAL;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case AUD_SAMPLE_RATE_48:
|
|
|
|
maud_val = AUD_SAMPLE_RATE_48_DP_2_7_MAUD_VAL;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case AUD_SAMPLE_RATE_88_2:
|
|
|
|
maud_val = AUD_SAMPLE_RATE_88_2_DP_2_7_MAUD_VAL;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case AUD_SAMPLE_RATE_96:
|
|
|
|
maud_val = AUD_SAMPLE_RATE_96_DP_2_7_MAUD_VAL;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case AUD_SAMPLE_RATE_176_4:
|
|
|
|
maud_val = AUD_SAMPLE_RATE_176_4_DP_2_7_MAUD_VAL;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case HAD_MAX_RATE:
|
|
|
|
maud_val = HAD_MAX_RATE_DP_2_7_MAUD_VAL;
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
maud_val = -EINVAL;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
} else if (link_rate == DP_1_62_GHZ) {
|
|
|
|
switch (aud_samp_freq) {
|
|
|
|
case AUD_SAMPLE_RATE_32:
|
|
|
|
maud_val = AUD_SAMPLE_RATE_32_DP_1_62_MAUD_VAL;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case AUD_SAMPLE_RATE_44_1:
|
|
|
|
maud_val = AUD_SAMPLE_RATE_44_1_DP_1_62_MAUD_VAL;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case AUD_SAMPLE_RATE_48:
|
|
|
|
maud_val = AUD_SAMPLE_RATE_48_DP_1_62_MAUD_VAL;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case AUD_SAMPLE_RATE_88_2:
|
|
|
|
maud_val = AUD_SAMPLE_RATE_88_2_DP_1_62_MAUD_VAL;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case AUD_SAMPLE_RATE_96:
|
|
|
|
maud_val = AUD_SAMPLE_RATE_96_DP_1_62_MAUD_VAL;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case AUD_SAMPLE_RATE_176_4:
|
|
|
|
maud_val = AUD_SAMPLE_RATE_176_4_DP_1_62_MAUD_VAL;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case HAD_MAX_RATE:
|
|
|
|
maud_val = HAD_MAX_RATE_DP_1_62_MAUD_VAL;
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
maud_val = -EINVAL;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
} else
|
|
|
|
maud_val = -EINVAL;
|
|
|
|
|
|
|
|
return maud_val;
|
|
|
|
}
|
|
|
|
|
2017-01-30 23:09:11 +08:00
|
|
|
/*
|
|
|
|
* snd_intelhad_prog_cts - Program HDMI audio CTS value
|
2017-01-25 06:57:52 +08:00
|
|
|
*
|
|
|
|
* @aud_samp_freq: sampling frequency of audio data
|
|
|
|
* @tmds: sampling frequency of the display data
|
|
|
|
* @n_param: N value, depends on aud_samp_freq
|
|
|
|
* @intelhaddata:substream private data
|
|
|
|
*
|
|
|
|
* Program CTS register based on the audio and display sampling frequency
|
|
|
|
*/
|
2017-01-30 23:09:11 +08:00
|
|
|
static void snd_intelhad_prog_cts(u32 aud_samp_freq, u32 tmds,
|
|
|
|
u32 link_rate, u32 n_param,
|
|
|
|
struct snd_intelhad *intelhaddata)
|
2017-01-25 06:57:52 +08:00
|
|
|
{
|
|
|
|
u32 cts_val;
|
|
|
|
u64 dividend, divisor;
|
|
|
|
|
2017-02-01 04:16:52 +08:00
|
|
|
if (intelhaddata->dp_output) {
|
|
|
|
/* Substitute cts_val with Maud according to DP 1.2 spec*/
|
|
|
|
cts_val = had_calculate_maud_value(aud_samp_freq, link_rate);
|
|
|
|
} else {
|
|
|
|
/* Calculate CTS according to HDMI 1.3a spec*/
|
|
|
|
dividend = (u64)tmds * n_param*1000;
|
|
|
|
divisor = 128 * aud_samp_freq;
|
|
|
|
cts_val = div64_u64(dividend, divisor);
|
|
|
|
}
|
2017-01-25 06:57:52 +08:00
|
|
|
pr_debug("TMDS value=%d, N value=%d, CTS Value=%d\n",
|
2017-02-01 04:16:52 +08:00
|
|
|
tmds, n_param, cts_val);
|
2017-01-31 00:23:39 +08:00
|
|
|
had_write_register(intelhaddata, AUD_HDMI_CTS, (BIT(24) | cts_val));
|
2017-01-25 06:57:52 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static int had_calculate_n_value(u32 aud_samp_freq)
|
|
|
|
{
|
|
|
|
s32 n_val;
|
|
|
|
|
|
|
|
/* Select N according to HDMI 1.3a spec*/
|
|
|
|
switch (aud_samp_freq) {
|
|
|
|
case AUD_SAMPLE_RATE_32:
|
|
|
|
n_val = 4096;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case AUD_SAMPLE_RATE_44_1:
|
|
|
|
n_val = 6272;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case AUD_SAMPLE_RATE_48:
|
|
|
|
n_val = 6144;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case AUD_SAMPLE_RATE_88_2:
|
|
|
|
n_val = 12544;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case AUD_SAMPLE_RATE_96:
|
|
|
|
n_val = 12288;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case AUD_SAMPLE_RATE_176_4:
|
|
|
|
n_val = 25088;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case HAD_MAX_RATE:
|
|
|
|
n_val = 24576;
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
n_val = -EINVAL;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return n_val;
|
|
|
|
}
|
|
|
|
|
2017-01-30 23:09:11 +08:00
|
|
|
/*
|
|
|
|
* snd_intelhad_prog_n - Program HDMI audio N value
|
2017-01-25 06:57:52 +08:00
|
|
|
*
|
|
|
|
* @aud_samp_freq: sampling frequency of audio data
|
|
|
|
* @n_param: N value, depends on aud_samp_freq
|
|
|
|
* @intelhaddata:substream private data
|
|
|
|
*
|
|
|
|
* This function is called in the prepare callback.
|
|
|
|
* It programs based on the audio and display sampling frequency
|
|
|
|
*/
|
2017-01-30 23:09:11 +08:00
|
|
|
static int snd_intelhad_prog_n(u32 aud_samp_freq, u32 *n_param,
|
|
|
|
struct snd_intelhad *intelhaddata)
|
2017-01-25 06:57:52 +08:00
|
|
|
{
|
|
|
|
s32 n_val;
|
|
|
|
|
2017-02-01 04:16:52 +08:00
|
|
|
if (intelhaddata->dp_output) {
|
|
|
|
/*
|
|
|
|
* According to DP specs, Maud and Naud values hold
|
|
|
|
* a relationship, which is stated as:
|
|
|
|
* Maud/Naud = 512 * fs / f_LS_Clk
|
|
|
|
* where, fs is the sampling frequency of the audio stream
|
|
|
|
* and Naud is 32768 for Async clock.
|
|
|
|
*/
|
|
|
|
|
|
|
|
n_val = DP_NAUD_VAL;
|
|
|
|
} else
|
|
|
|
n_val = had_calculate_n_value(aud_samp_freq);
|
2017-01-25 06:57:52 +08:00
|
|
|
|
|
|
|
if (n_val < 0)
|
|
|
|
return n_val;
|
|
|
|
|
2017-01-31 00:23:39 +08:00
|
|
|
had_write_register(intelhaddata, AUD_N_ENABLE, (BIT(24) | n_val));
|
2017-01-25 06:57:52 +08:00
|
|
|
*n_param = n_val;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2017-01-30 23:09:11 +08:00
|
|
|
void snd_intelhad_handle_underrun(struct snd_intelhad *intelhaddata)
|
2017-01-25 06:57:52 +08:00
|
|
|
{
|
|
|
|
u32 hdmi_status, i = 0;
|
|
|
|
|
|
|
|
/* Handle Underrun interrupt within Audio Unit */
|
2017-01-31 00:23:39 +08:00
|
|
|
had_write_register(intelhaddata, AUD_CONFIG, 0);
|
2017-01-25 06:57:52 +08:00
|
|
|
/* Reset buffer pointers */
|
2017-01-31 00:23:39 +08:00
|
|
|
had_write_register(intelhaddata, AUD_HDMI_STATUS_v2, 1);
|
|
|
|
had_write_register(intelhaddata, AUD_HDMI_STATUS_v2, 0);
|
2017-01-25 06:57:52 +08:00
|
|
|
/**
|
|
|
|
* The interrupt status 'sticky' bits might not be cleared by
|
|
|
|
* setting '1' to that bit once...
|
|
|
|
*/
|
|
|
|
do { /* clear bit30, 31 AUD_HDMI_STATUS */
|
2017-01-31 00:23:39 +08:00
|
|
|
had_read_register(intelhaddata, AUD_HDMI_STATUS_v2,
|
|
|
|
&hdmi_status);
|
2017-01-25 06:57:52 +08:00
|
|
|
pr_debug("HDMI status =0x%x\n", hdmi_status);
|
|
|
|
if (hdmi_status & AUD_CONFIG_MASK_UNDERRUN) {
|
|
|
|
i++;
|
2017-01-31 00:23:39 +08:00
|
|
|
had_write_register(intelhaddata,
|
|
|
|
AUD_HDMI_STATUS_v2, hdmi_status);
|
2017-01-25 06:57:52 +08:00
|
|
|
} else
|
|
|
|
break;
|
|
|
|
} while (i < MAX_CNT);
|
|
|
|
if (i >= MAX_CNT)
|
|
|
|
pr_err("Unable to clear UNDERRUN bits\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* snd_intelhad_open - stream initializations are done here
|
|
|
|
* @substream:substream for which the stream function is called
|
|
|
|
*
|
|
|
|
* This function is called whenever a PCM stream is opened
|
|
|
|
*/
|
|
|
|
static int snd_intelhad_open(struct snd_pcm_substream *substream)
|
|
|
|
{
|
|
|
|
struct snd_intelhad *intelhaddata;
|
|
|
|
struct snd_pcm_runtime *runtime;
|
|
|
|
struct had_stream_pvt *stream;
|
|
|
|
struct had_pvt_data *had_stream;
|
|
|
|
int retval;
|
|
|
|
|
|
|
|
pr_debug("snd_intelhad_open called\n");
|
|
|
|
intelhaddata = snd_pcm_substream_chip(substream);
|
|
|
|
had_stream = intelhaddata->private_data;
|
|
|
|
runtime = substream->runtime;
|
2017-01-31 01:17:44 +08:00
|
|
|
intelhaddata->underrun_count = 0;
|
2017-01-25 06:57:52 +08:00
|
|
|
|
|
|
|
pm_runtime_get(intelhaddata->dev);
|
|
|
|
|
|
|
|
if (had_get_hwstate(intelhaddata)) {
|
|
|
|
pr_err("%s: HDMI cable plugged-out\n", __func__);
|
|
|
|
retval = -ENODEV;
|
|
|
|
goto exit_put_handle;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check, if device already in use */
|
|
|
|
if (runtime->private_data) {
|
|
|
|
pr_err("Device already in use\n");
|
|
|
|
retval = -EBUSY;
|
|
|
|
goto exit_put_handle;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* set the runtime hw parameter with local snd_pcm_hardware struct */
|
|
|
|
runtime->hw = snd_intel_hadstream;
|
|
|
|
|
|
|
|
stream = kzalloc(sizeof(*stream), GFP_KERNEL);
|
|
|
|
if (!stream) {
|
|
|
|
retval = -ENOMEM;
|
|
|
|
goto exit_put_handle;
|
|
|
|
}
|
|
|
|
stream->stream_status = STREAM_INIT;
|
|
|
|
runtime->private_data = stream;
|
|
|
|
|
|
|
|
retval = snd_pcm_hw_constraint_integer(runtime,
|
|
|
|
SNDRV_PCM_HW_PARAM_PERIODS);
|
|
|
|
if (retval < 0)
|
|
|
|
goto exit_err;
|
|
|
|
|
|
|
|
/* Make sure, that the period size is always aligned
|
|
|
|
* 64byte boundary
|
|
|
|
*/
|
|
|
|
retval = snd_pcm_hw_constraint_step(substream->runtime, 0,
|
|
|
|
SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64);
|
|
|
|
if (retval < 0) {
|
|
|
|
pr_err("%s:step_size=64 failed,err=%d\n", __func__, retval);
|
|
|
|
goto exit_err;
|
|
|
|
}
|
|
|
|
|
|
|
|
return retval;
|
|
|
|
exit_err:
|
|
|
|
kfree(stream);
|
|
|
|
exit_put_handle:
|
|
|
|
pm_runtime_put(intelhaddata->dev);
|
|
|
|
runtime->private_data = NULL;
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* had_period_elapsed - updates the hardware pointer status
|
|
|
|
* @had_substream:substream for which the stream function is called
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
static void had_period_elapsed(void *had_substream)
|
|
|
|
{
|
|
|
|
struct snd_pcm_substream *substream = had_substream;
|
|
|
|
struct had_stream_pvt *stream;
|
|
|
|
|
|
|
|
/* pr_debug("had_period_elapsed called\n"); */
|
|
|
|
|
|
|
|
if (!substream || !substream->runtime)
|
|
|
|
return;
|
|
|
|
stream = substream->runtime->private_data;
|
|
|
|
if (!stream)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (stream->stream_status != STREAM_RUNNING)
|
|
|
|
return;
|
|
|
|
snd_pcm_period_elapsed(substream);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* snd_intelhad_init_stream - internal function to initialize stream info
|
|
|
|
* @substream:substream for which the stream function is called
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
static int snd_intelhad_init_stream(struct snd_pcm_substream *substream)
|
|
|
|
{
|
|
|
|
struct snd_intelhad *intelhaddata = snd_pcm_substream_chip(substream);
|
|
|
|
|
|
|
|
pr_debug("snd_intelhad_init_stream called\n");
|
|
|
|
|
|
|
|
pr_debug("setting buffer ptr param\n");
|
|
|
|
intelhaddata->stream_info.period_elapsed = had_period_elapsed;
|
|
|
|
intelhaddata->stream_info.had_substream = substream;
|
|
|
|
intelhaddata->stream_info.buffer_ptr = 0;
|
|
|
|
intelhaddata->stream_info.buffer_rendered = 0;
|
|
|
|
intelhaddata->stream_info.sfreq = substream->runtime->rate;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* snd_intelhad_close- to free parameteres when stream is stopped
|
|
|
|
*
|
|
|
|
* @substream: substream for which the function is called
|
|
|
|
*
|
|
|
|
* This function is called by ALSA framework when stream is stopped
|
|
|
|
*/
|
|
|
|
static int snd_intelhad_close(struct snd_pcm_substream *substream)
|
|
|
|
{
|
|
|
|
struct snd_intelhad *intelhaddata;
|
|
|
|
struct snd_pcm_runtime *runtime;
|
|
|
|
|
|
|
|
pr_debug("snd_intelhad_close called\n");
|
|
|
|
|
|
|
|
intelhaddata = snd_pcm_substream_chip(substream);
|
|
|
|
runtime = substream->runtime;
|
|
|
|
|
|
|
|
if (!runtime->private_data) {
|
|
|
|
pr_debug("close() might have called after failed open");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
intelhaddata->stream_info.buffer_rendered = 0;
|
|
|
|
intelhaddata->stream_info.buffer_ptr = 0;
|
|
|
|
intelhaddata->stream_info.str_id = 0;
|
|
|
|
intelhaddata->stream_info.had_substream = NULL;
|
|
|
|
|
|
|
|
/* Check if following drv_status modification is required - VA */
|
|
|
|
if (intelhaddata->drv_status != HAD_DRV_DISCONNECTED) {
|
|
|
|
intelhaddata->drv_status = HAD_DRV_CONNECTED;
|
|
|
|
pr_debug("%s @ %d:DEBUG PLUG/UNPLUG : HAD_DRV_CONNECTED\n",
|
|
|
|
__func__, __LINE__);
|
|
|
|
}
|
|
|
|
kfree(runtime->private_data);
|
|
|
|
runtime->private_data = NULL;
|
|
|
|
pm_runtime_put(intelhaddata->dev);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* snd_intelhad_hw_params- to setup the hardware parameters
|
|
|
|
* like allocating the buffers
|
|
|
|
*
|
|
|
|
* @substream: substream for which the function is called
|
|
|
|
* @hw_params: hardware parameters
|
|
|
|
*
|
|
|
|
* This function is called by ALSA framework when hardware params are set
|
|
|
|
*/
|
|
|
|
static int snd_intelhad_hw_params(struct snd_pcm_substream *substream,
|
|
|
|
struct snd_pcm_hw_params *hw_params)
|
|
|
|
{
|
|
|
|
unsigned long addr;
|
|
|
|
int pages, buf_size, retval;
|
|
|
|
|
|
|
|
pr_debug("snd_intelhad_hw_params called\n");
|
|
|
|
|
|
|
|
if (!hw_params)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
buf_size = params_buffer_bytes(hw_params);
|
|
|
|
retval = snd_pcm_lib_malloc_pages(substream, buf_size);
|
|
|
|
if (retval < 0)
|
|
|
|
return retval;
|
|
|
|
pr_debug("%s:allocated memory = %d\n", __func__, buf_size);
|
|
|
|
/* mark the pages as uncached region */
|
|
|
|
addr = (unsigned long) substream->runtime->dma_area;
|
|
|
|
pages = (substream->runtime->dma_bytes + PAGE_SIZE - 1) / PAGE_SIZE;
|
|
|
|
retval = set_memory_uc(addr, pages);
|
|
|
|
if (retval) {
|
|
|
|
pr_err("set_memory_uc failed.Error:%d\n", retval);
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
memset(substream->runtime->dma_area, 0, buf_size);
|
|
|
|
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* snd_intelhad_hw_free- to release the resources allocated during
|
|
|
|
* hardware params setup
|
|
|
|
*
|
|
|
|
* @substream: substream for which the function is called
|
|
|
|
*
|
|
|
|
* This function is called by ALSA framework before close callback.
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
static int snd_intelhad_hw_free(struct snd_pcm_substream *substream)
|
|
|
|
{
|
|
|
|
unsigned long addr;
|
|
|
|
u32 pages;
|
|
|
|
|
|
|
|
pr_debug("snd_intelhad_hw_free called\n");
|
|
|
|
|
|
|
|
/* mark back the pages as cached/writeback region before the free */
|
|
|
|
if (substream->runtime->dma_area != NULL) {
|
|
|
|
addr = (unsigned long) substream->runtime->dma_area;
|
|
|
|
pages = (substream->runtime->dma_bytes + PAGE_SIZE - 1) /
|
|
|
|
PAGE_SIZE;
|
|
|
|
set_memory_wb(addr, pages);
|
|
|
|
return snd_pcm_lib_free_pages(substream);
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* snd_intelhad_pcm_trigger - stream activities are handled here
|
|
|
|
* @substream:substream for which the stream function is called
|
|
|
|
* @cmd:the stream commamd thats requested from upper layer
|
|
|
|
* This function is called whenever an a stream activity is invoked
|
|
|
|
*/
|
|
|
|
static int snd_intelhad_pcm_trigger(struct snd_pcm_substream *substream,
|
|
|
|
int cmd)
|
|
|
|
{
|
|
|
|
int caps, retval = 0;
|
|
|
|
unsigned long flag_irq;
|
|
|
|
struct snd_intelhad *intelhaddata;
|
|
|
|
struct had_stream_pvt *stream;
|
|
|
|
struct had_pvt_data *had_stream;
|
|
|
|
|
|
|
|
pr_debug("snd_intelhad_pcm_trigger called\n");
|
|
|
|
|
|
|
|
intelhaddata = snd_pcm_substream_chip(substream);
|
|
|
|
stream = substream->runtime->private_data;
|
|
|
|
had_stream = intelhaddata->private_data;
|
|
|
|
|
|
|
|
switch (cmd) {
|
|
|
|
case SNDRV_PCM_TRIGGER_START:
|
|
|
|
pr_debug("Trigger Start\n");
|
|
|
|
|
|
|
|
/* Disable local INTRs till register prgmng is done */
|
|
|
|
if (had_get_hwstate(intelhaddata)) {
|
|
|
|
pr_err("_START: HDMI cable plugged-out\n");
|
|
|
|
retval = -ENODEV;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
stream->stream_status = STREAM_RUNNING;
|
|
|
|
|
|
|
|
had_stream->stream_type = HAD_RUNNING_STREAM;
|
|
|
|
|
|
|
|
/* Enable Audio */
|
|
|
|
/*
|
|
|
|
* ToDo: Need to enable UNDERRUN interrupts as well
|
|
|
|
* caps = HDMI_AUDIO_UNDERRUN | HDMI_AUDIO_BUFFER_DONE;
|
|
|
|
*/
|
|
|
|
caps = HDMI_AUDIO_BUFFER_DONE;
|
2017-01-31 00:23:39 +08:00
|
|
|
retval = had_set_caps(intelhaddata, HAD_SET_ENABLE_AUDIO_INT,
|
|
|
|
&caps);
|
|
|
|
retval = had_set_caps(intelhaddata, HAD_SET_ENABLE_AUDIO, NULL);
|
2017-01-30 23:09:11 +08:00
|
|
|
snd_intelhad_enable_audio(substream, 1);
|
2017-01-25 06:57:52 +08:00
|
|
|
|
|
|
|
pr_debug("Processed _Start\n");
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
|
|
|
pr_debug("Trigger Stop\n");
|
|
|
|
spin_lock_irqsave(&intelhaddata->had_spinlock, flag_irq);
|
|
|
|
intelhaddata->stream_info.str_id = 0;
|
|
|
|
intelhaddata->curr_buf = 0;
|
|
|
|
|
|
|
|
/* Stop reporting BUFFER_DONE/UNDERRUN to above layers*/
|
|
|
|
|
|
|
|
had_stream->stream_type = HAD_INIT;
|
|
|
|
spin_unlock_irqrestore(&intelhaddata->had_spinlock, flag_irq);
|
|
|
|
/* Disable Audio */
|
|
|
|
/*
|
|
|
|
* ToDo: Need to disable UNDERRUN interrupts as well
|
|
|
|
* caps = HDMI_AUDIO_UNDERRUN | HDMI_AUDIO_BUFFER_DONE;
|
|
|
|
*/
|
|
|
|
caps = HDMI_AUDIO_BUFFER_DONE;
|
2017-01-31 00:23:39 +08:00
|
|
|
had_set_caps(intelhaddata, HAD_SET_DISABLE_AUDIO_INT, &caps);
|
2017-01-30 23:09:11 +08:00
|
|
|
snd_intelhad_enable_audio(substream, 0);
|
2017-01-25 06:57:52 +08:00
|
|
|
/* Reset buffer pointers */
|
2017-01-31 00:23:39 +08:00
|
|
|
snd_intelhad_reset_audio(intelhaddata, 1);
|
|
|
|
snd_intelhad_reset_audio(intelhaddata, 0);
|
2017-01-25 06:57:52 +08:00
|
|
|
stream->stream_status = STREAM_DROPPED;
|
2017-01-31 00:23:39 +08:00
|
|
|
had_set_caps(intelhaddata, HAD_SET_DISABLE_AUDIO, NULL);
|
2017-01-25 06:57:52 +08:00
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
retval = -EINVAL;
|
|
|
|
}
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* snd_intelhad_pcm_prepare- internal preparation before starting a stream
|
|
|
|
*
|
|
|
|
* @substream: substream for which the function is called
|
|
|
|
*
|
|
|
|
* This function is called when a stream is started for internal preparation.
|
|
|
|
*/
|
|
|
|
static int snd_intelhad_pcm_prepare(struct snd_pcm_substream *substream)
|
|
|
|
{
|
|
|
|
int retval;
|
|
|
|
u32 disp_samp_freq, n_param;
|
2017-02-01 04:16:52 +08:00
|
|
|
u32 link_rate = 0;
|
2017-01-25 06:57:52 +08:00
|
|
|
struct snd_intelhad *intelhaddata;
|
|
|
|
struct snd_pcm_runtime *runtime;
|
|
|
|
struct had_pvt_data *had_stream;
|
|
|
|
|
|
|
|
pr_debug("snd_intelhad_pcm_prepare called\n");
|
|
|
|
|
|
|
|
intelhaddata = snd_pcm_substream_chip(substream);
|
|
|
|
runtime = substream->runtime;
|
|
|
|
had_stream = intelhaddata->private_data;
|
|
|
|
|
|
|
|
if (had_get_hwstate(intelhaddata)) {
|
|
|
|
pr_err("%s: HDMI cable plugged-out\n", __func__);
|
|
|
|
retval = -ENODEV;
|
|
|
|
goto prep_end;
|
|
|
|
}
|
|
|
|
|
|
|
|
pr_debug("period_size=%d\n",
|
|
|
|
(int)frames_to_bytes(runtime, runtime->period_size));
|
|
|
|
pr_debug("periods=%d\n", runtime->periods);
|
|
|
|
pr_debug("buffer_size=%d\n", (int)snd_pcm_lib_buffer_bytes(substream));
|
|
|
|
pr_debug("rate=%d\n", runtime->rate);
|
|
|
|
pr_debug("channels=%d\n", runtime->channels);
|
|
|
|
|
|
|
|
if (intelhaddata->stream_info.str_id) {
|
|
|
|
pr_debug("_prepare is called for existing str_id#%d\n",
|
|
|
|
intelhaddata->stream_info.str_id);
|
|
|
|
retval = snd_intelhad_pcm_trigger(substream,
|
|
|
|
SNDRV_PCM_TRIGGER_STOP);
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
retval = snd_intelhad_init_stream(substream);
|
|
|
|
if (retval)
|
|
|
|
goto prep_end;
|
|
|
|
|
|
|
|
|
|
|
|
/* Get N value in KHz */
|
2017-01-31 00:23:39 +08:00
|
|
|
retval = had_get_caps(intelhaddata, HAD_GET_DISPLAY_RATE,
|
|
|
|
&disp_samp_freq);
|
2017-01-25 06:57:52 +08:00
|
|
|
if (retval) {
|
|
|
|
pr_err("querying display sampling freq failed %#x\n", retval);
|
|
|
|
goto prep_end;
|
|
|
|
}
|
|
|
|
|
2017-01-31 00:23:39 +08:00
|
|
|
had_get_caps(intelhaddata, HAD_GET_ELD, &intelhaddata->eeld);
|
|
|
|
had_get_caps(intelhaddata, HAD_GET_DP_OUTPUT, &intelhaddata->dp_output);
|
2017-01-25 06:57:52 +08:00
|
|
|
|
2017-01-30 23:09:11 +08:00
|
|
|
retval = snd_intelhad_prog_n(substream->runtime->rate, &n_param,
|
|
|
|
intelhaddata);
|
2017-01-25 06:57:52 +08:00
|
|
|
if (retval) {
|
|
|
|
pr_err("programming N value failed %#x\n", retval);
|
|
|
|
goto prep_end;
|
|
|
|
}
|
2017-02-01 04:16:52 +08:00
|
|
|
|
|
|
|
if (intelhaddata->dp_output)
|
2017-01-31 00:23:39 +08:00
|
|
|
had_get_caps(intelhaddata, HAD_GET_LINK_RATE, &link_rate);
|
2017-02-01 04:16:52 +08:00
|
|
|
|
|
|
|
|
2017-01-30 23:09:11 +08:00
|
|
|
snd_intelhad_prog_cts(substream->runtime->rate,
|
|
|
|
disp_samp_freq, link_rate,
|
|
|
|
n_param, intelhaddata);
|
2017-01-25 06:57:52 +08:00
|
|
|
|
2017-01-30 23:09:11 +08:00
|
|
|
snd_intelhad_prog_dip(substream, intelhaddata);
|
2017-01-25 06:57:52 +08:00
|
|
|
|
2017-01-30 23:09:11 +08:00
|
|
|
retval = snd_intelhad_audio_ctrl(substream, intelhaddata);
|
2017-01-25 06:57:52 +08:00
|
|
|
|
|
|
|
/* Prog buffer address */
|
|
|
|
retval = snd_intelhad_prog_buffer(intelhaddata,
|
|
|
|
HAD_BUF_TYPE_A, HAD_BUF_TYPE_D);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Program channel mapping in following order:
|
|
|
|
* FL, FR, C, LFE, RL, RR
|
|
|
|
*/
|
|
|
|
|
2017-01-31 00:23:39 +08:00
|
|
|
had_write_register(intelhaddata, AUD_BUF_CH_SWAP, SWAP_LFE_CENTER);
|
2017-01-25 06:57:52 +08:00
|
|
|
|
|
|
|
prep_end:
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* snd_intelhad_pcm_pointer- to send the current buffer pointerprocessed by hw
|
|
|
|
*
|
|
|
|
* @substream: substream for which the function is called
|
|
|
|
*
|
|
|
|
* This function is called by ALSA framework to get the current hw buffer ptr
|
|
|
|
* when a period is elapsed
|
|
|
|
*/
|
|
|
|
static snd_pcm_uframes_t snd_intelhad_pcm_pointer(
|
|
|
|
struct snd_pcm_substream *substream)
|
|
|
|
{
|
|
|
|
struct snd_intelhad *intelhaddata;
|
|
|
|
u32 bytes_rendered = 0;
|
|
|
|
u32 t;
|
|
|
|
int buf_id;
|
|
|
|
|
|
|
|
/* pr_debug("snd_intelhad_pcm_pointer called\n"); */
|
|
|
|
|
|
|
|
intelhaddata = snd_pcm_substream_chip(substream);
|
|
|
|
|
|
|
|
if (intelhaddata->flag_underrun) {
|
|
|
|
intelhaddata->flag_underrun = 0;
|
|
|
|
return SNDRV_PCM_POS_XRUN;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Use a hw register to calculate sub-period position reports.
|
|
|
|
* This makes PulseAudio happier.
|
|
|
|
*/
|
|
|
|
|
|
|
|
buf_id = intelhaddata->curr_buf % 4;
|
2017-01-31 00:23:39 +08:00
|
|
|
had_read_register(intelhaddata,
|
|
|
|
AUD_BUF_A_LENGTH + (buf_id * HAD_REG_WIDTH), &t);
|
2017-01-25 06:57:53 +08:00
|
|
|
|
|
|
|
if ((t == 0) || (t == ((u32)-1L))) {
|
2017-01-31 01:17:44 +08:00
|
|
|
intelhaddata->underrun_count++;
|
2017-01-25 06:57:53 +08:00
|
|
|
pr_debug("discovered buffer done for buf %d, count = %d\n",
|
2017-01-31 01:17:44 +08:00
|
|
|
buf_id, intelhaddata->underrun_count);
|
2017-01-25 06:57:53 +08:00
|
|
|
|
2017-01-31 01:17:44 +08:00
|
|
|
if (intelhaddata->underrun_count > (HAD_MIN_PERIODS/2)) {
|
2017-01-25 06:57:53 +08:00
|
|
|
pr_debug("assume audio_codec_reset, underrun = %d - do xrun\n",
|
2017-01-31 01:17:44 +08:00
|
|
|
intelhaddata->underrun_count);
|
|
|
|
intelhaddata->underrun_count = 0;
|
2017-01-25 06:57:53 +08:00
|
|
|
return SNDRV_PCM_POS_XRUN;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
/* Reset Counter */
|
2017-01-31 01:17:44 +08:00
|
|
|
intelhaddata->underrun_count = 0;
|
2017-01-25 06:57:52 +08:00
|
|
|
}
|
2017-01-25 06:57:53 +08:00
|
|
|
|
2017-01-25 06:57:52 +08:00
|
|
|
t = intelhaddata->buf_info[buf_id].buf_size - t;
|
|
|
|
|
|
|
|
if (intelhaddata->stream_info.buffer_rendered)
|
|
|
|
div_u64_rem(intelhaddata->stream_info.buffer_rendered,
|
|
|
|
intelhaddata->stream_info.ring_buf_size,
|
|
|
|
&(bytes_rendered));
|
|
|
|
|
|
|
|
intelhaddata->stream_info.buffer_ptr = bytes_to_frames(
|
|
|
|
substream->runtime,
|
|
|
|
bytes_rendered + t);
|
|
|
|
return intelhaddata->stream_info.buffer_ptr;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* snd_intelhad_pcm_mmap- mmaps a kernel buffer to user space for copying data
|
|
|
|
*
|
|
|
|
* @substream: substream for which the function is called
|
|
|
|
* @vma: struct instance of memory VMM memory area
|
|
|
|
*
|
|
|
|
* This function is called by OS when a user space component
|
|
|
|
* tries to get mmap memory from driver
|
|
|
|
*/
|
|
|
|
static int snd_intelhad_pcm_mmap(struct snd_pcm_substream *substream,
|
|
|
|
struct vm_area_struct *vma)
|
|
|
|
{
|
|
|
|
|
|
|
|
pr_debug("snd_intelhad_pcm_mmap called\n");
|
|
|
|
|
|
|
|
pr_debug("entry with prot:%s\n", __func__);
|
|
|
|
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
|
|
|
|
return remap_pfn_range(vma, vma->vm_start,
|
|
|
|
substream->dma_buffer.addr >> PAGE_SHIFT,
|
|
|
|
vma->vm_end - vma->vm_start, vma->vm_page_prot);
|
|
|
|
}
|
|
|
|
|
|
|
|
int hdmi_audio_mode_change(struct snd_pcm_substream *substream)
|
|
|
|
{
|
|
|
|
int retval = 0;
|
|
|
|
u32 disp_samp_freq, n_param;
|
2017-02-01 04:16:52 +08:00
|
|
|
u32 link_rate = 0;
|
2017-01-25 06:57:52 +08:00
|
|
|
struct snd_intelhad *intelhaddata;
|
|
|
|
|
|
|
|
intelhaddata = snd_pcm_substream_chip(substream);
|
|
|
|
|
|
|
|
/* Disable Audio */
|
2017-01-30 23:09:11 +08:00
|
|
|
snd_intelhad_enable_audio(substream, 0);
|
2017-01-25 06:57:52 +08:00
|
|
|
|
|
|
|
/* Update CTS value */
|
2017-01-31 00:23:39 +08:00
|
|
|
retval = had_get_caps(intelhaddata, HAD_GET_DISPLAY_RATE,
|
|
|
|
&disp_samp_freq);
|
2017-01-25 06:57:52 +08:00
|
|
|
if (retval) {
|
|
|
|
pr_err("querying display sampling freq failed %#x\n", retval);
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
2017-01-30 23:09:11 +08:00
|
|
|
retval = snd_intelhad_prog_n(substream->runtime->rate, &n_param,
|
|
|
|
intelhaddata);
|
2017-01-25 06:57:52 +08:00
|
|
|
if (retval) {
|
|
|
|
pr_err("programming N value failed %#x\n", retval);
|
|
|
|
goto out;
|
|
|
|
}
|
2017-02-01 04:16:52 +08:00
|
|
|
|
|
|
|
if (intelhaddata->dp_output)
|
2017-01-31 00:23:39 +08:00
|
|
|
had_get_caps(intelhaddata, HAD_GET_LINK_RATE, &link_rate);
|
2017-02-01 04:16:52 +08:00
|
|
|
|
2017-01-30 23:09:11 +08:00
|
|
|
snd_intelhad_prog_cts(substream->runtime->rate,
|
|
|
|
disp_samp_freq, link_rate,
|
|
|
|
n_param, intelhaddata);
|
2017-01-25 06:57:52 +08:00
|
|
|
|
|
|
|
/* Enable Audio */
|
2017-01-30 23:09:11 +08:00
|
|
|
snd_intelhad_enable_audio(substream, 1);
|
2017-01-25 06:57:52 +08:00
|
|
|
|
|
|
|
out:
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*PCM operations structure and the calls back for the same */
|
|
|
|
struct snd_pcm_ops snd_intelhad_playback_ops = {
|
|
|
|
.open = snd_intelhad_open,
|
|
|
|
.close = snd_intelhad_close,
|
|
|
|
.ioctl = snd_pcm_lib_ioctl,
|
|
|
|
.hw_params = snd_intelhad_hw_params,
|
|
|
|
.hw_free = snd_intelhad_hw_free,
|
|
|
|
.prepare = snd_intelhad_pcm_prepare,
|
|
|
|
.trigger = snd_intelhad_pcm_trigger,
|
|
|
|
.pointer = snd_intelhad_pcm_pointer,
|
|
|
|
.mmap = snd_intelhad_pcm_mmap,
|
|
|
|
};
|
|
|
|
|
|
|
|
/**
|
|
|
|
* snd_intelhad_create - to crete alsa card instance
|
|
|
|
*
|
|
|
|
* @intelhaddata: pointer to internal context
|
|
|
|
* @card: pointer to card
|
|
|
|
*
|
|
|
|
* This function is called when the hdmi cable is plugged in
|
|
|
|
*/
|
|
|
|
static int snd_intelhad_create(
|
|
|
|
struct snd_intelhad *intelhaddata,
|
|
|
|
struct snd_card *card)
|
|
|
|
{
|
|
|
|
int retval;
|
|
|
|
static struct snd_device_ops ops = {
|
|
|
|
};
|
|
|
|
|
|
|
|
pr_debug("snd_intelhad_create called\n");
|
|
|
|
|
|
|
|
if (!intelhaddata)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
/* ALSA api to register the device */
|
|
|
|
retval = snd_device_new(card, SNDRV_DEV_LOWLEVEL, intelhaddata, &ops);
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
/**
|
|
|
|
* snd_intelhad_pcm_free - to free the memory allocated
|
|
|
|
*
|
|
|
|
* @pcm: pointer to pcm instance
|
|
|
|
* This function is called when the device is removed
|
|
|
|
*/
|
|
|
|
static void snd_intelhad_pcm_free(struct snd_pcm *pcm)
|
|
|
|
{
|
|
|
|
pr_debug("Freeing PCM preallocated pages\n");
|
|
|
|
snd_pcm_lib_preallocate_free_for_all(pcm);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int had_iec958_info(struct snd_kcontrol *kcontrol,
|
|
|
|
struct snd_ctl_elem_info *uinfo)
|
|
|
|
{
|
|
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
|
|
|
|
uinfo->count = 1;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int had_iec958_get(struct snd_kcontrol *kcontrol,
|
|
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
|
|
{
|
|
|
|
struct snd_intelhad *intelhaddata = snd_kcontrol_chip(kcontrol);
|
|
|
|
|
|
|
|
ucontrol->value.iec958.status[0] = (intelhaddata->aes_bits >> 0) & 0xff;
|
|
|
|
ucontrol->value.iec958.status[1] = (intelhaddata->aes_bits >> 8) & 0xff;
|
|
|
|
ucontrol->value.iec958.status[2] =
|
|
|
|
(intelhaddata->aes_bits >> 16) & 0xff;
|
|
|
|
ucontrol->value.iec958.status[3] =
|
|
|
|
(intelhaddata->aes_bits >> 24) & 0xff;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
static int had_iec958_mask_get(struct snd_kcontrol *kcontrol,
|
|
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
|
|
{
|
|
|
|
ucontrol->value.iec958.status[0] = 0xff;
|
|
|
|
ucontrol->value.iec958.status[1] = 0xff;
|
|
|
|
ucontrol->value.iec958.status[2] = 0xff;
|
|
|
|
ucontrol->value.iec958.status[3] = 0xff;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
static int had_iec958_put(struct snd_kcontrol *kcontrol,
|
|
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
|
|
{
|
|
|
|
unsigned int val;
|
|
|
|
struct snd_intelhad *intelhaddata = snd_kcontrol_chip(kcontrol);
|
|
|
|
|
|
|
|
pr_debug("entered had_iec958_put\n");
|
|
|
|
val = (ucontrol->value.iec958.status[0] << 0) |
|
|
|
|
(ucontrol->value.iec958.status[1] << 8) |
|
|
|
|
(ucontrol->value.iec958.status[2] << 16) |
|
|
|
|
(ucontrol->value.iec958.status[3] << 24);
|
|
|
|
if (intelhaddata->aes_bits != val) {
|
|
|
|
intelhaddata->aes_bits = val;
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct snd_kcontrol_new had_control_iec958_mask = {
|
|
|
|
.access = SNDRV_CTL_ELEM_ACCESS_READ,
|
|
|
|
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
|
|
|
|
.name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK),
|
|
|
|
.info = had_iec958_info, /* shared */
|
|
|
|
.get = had_iec958_mask_get,
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct snd_kcontrol_new had_control_iec958 = {
|
|
|
|
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
|
|
|
|
.name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
|
|
|
|
.info = had_iec958_info,
|
|
|
|
.get = had_iec958_get,
|
|
|
|
.put = had_iec958_put
|
|
|
|
};
|
|
|
|
|
2017-01-31 00:23:39 +08:00
|
|
|
/*
|
2017-01-25 06:57:52 +08:00
|
|
|
* hdmi_audio_probe - to create sound card instance for HDMI audio playabck
|
|
|
|
*
|
2017-01-31 00:23:39 +08:00
|
|
|
* @devptr: platform device
|
|
|
|
* @had_ret: pointer to store the created snd_intelhad object
|
2017-01-25 06:57:52 +08:00
|
|
|
*
|
2017-01-31 00:23:39 +08:00
|
|
|
* This function is called when the platform device is probed. This function
|
2017-01-25 06:57:52 +08:00
|
|
|
* creates and registers the sound card with ALSA
|
|
|
|
*/
|
2017-01-31 00:23:39 +08:00
|
|
|
int hdmi_audio_probe(struct platform_device *devptr,
|
|
|
|
struct snd_intelhad **had_ret)
|
2017-01-25 06:57:52 +08:00
|
|
|
{
|
|
|
|
int retval;
|
|
|
|
struct snd_pcm *pcm;
|
|
|
|
struct snd_card *card;
|
|
|
|
struct snd_intelhad *intelhaddata;
|
|
|
|
struct had_pvt_data *had_stream;
|
|
|
|
|
|
|
|
pr_debug("Enter %s\n", __func__);
|
|
|
|
|
|
|
|
/* allocate memory for saving internal context and working */
|
|
|
|
intelhaddata = kzalloc(sizeof(*intelhaddata), GFP_KERNEL);
|
|
|
|
if (!intelhaddata)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
had_stream = kzalloc(sizeof(*had_stream), GFP_KERNEL);
|
|
|
|
if (!had_stream) {
|
|
|
|
retval = -ENOMEM;
|
|
|
|
goto free_haddata;
|
|
|
|
}
|
|
|
|
|
|
|
|
spin_lock_init(&intelhaddata->had_spinlock);
|
|
|
|
intelhaddata->drv_status = HAD_DRV_DISCONNECTED;
|
|
|
|
pr_debug("%s @ %d:DEBUG PLUG/UNPLUG : HAD_DRV_DISCONNECTED\n",
|
|
|
|
__func__, __LINE__);
|
|
|
|
|
|
|
|
/* create a card instance with ALSA framework */
|
|
|
|
retval = snd_card_new(&devptr->dev, hdmi_card_index, hdmi_card_id,
|
|
|
|
THIS_MODULE, 0, &card);
|
|
|
|
|
|
|
|
if (retval)
|
2017-01-31 00:31:29 +08:00
|
|
|
goto free_hadstream;
|
2017-01-25 06:57:52 +08:00
|
|
|
intelhaddata->card = card;
|
|
|
|
intelhaddata->card_id = hdmi_card_id;
|
|
|
|
intelhaddata->card_index = card->number;
|
|
|
|
intelhaddata->private_data = had_stream;
|
|
|
|
intelhaddata->flag_underrun = 0;
|
|
|
|
intelhaddata->aes_bits = SNDRV_PCM_DEFAULT_CON_SPDIF;
|
|
|
|
strncpy(card->driver, INTEL_HAD, strlen(INTEL_HAD));
|
|
|
|
strncpy(card->shortname, INTEL_HAD, strlen(INTEL_HAD));
|
|
|
|
|
|
|
|
retval = snd_pcm_new(card, INTEL_HAD, PCM_INDEX, MAX_PB_STREAMS,
|
|
|
|
MAX_CAP_STREAMS, &pcm);
|
|
|
|
if (retval)
|
|
|
|
goto err;
|
|
|
|
|
|
|
|
/* setup private data which can be retrieved when required */
|
|
|
|
pcm->private_data = intelhaddata;
|
|
|
|
pcm->private_free = snd_intelhad_pcm_free;
|
|
|
|
pcm->info_flags = 0;
|
|
|
|
strncpy(pcm->name, card->shortname, strlen(card->shortname));
|
|
|
|
/* setup the ops for palyabck */
|
|
|
|
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
|
|
|
|
&snd_intelhad_playback_ops);
|
|
|
|
/* allocate dma pages for ALSA stream operations
|
|
|
|
* memory allocated is based on size, not max value
|
|
|
|
* thus using same argument for max & size
|
|
|
|
*/
|
|
|
|
retval = snd_pcm_lib_preallocate_pages_for_all(pcm,
|
|
|
|
SNDRV_DMA_TYPE_DEV, NULL,
|
|
|
|
HAD_MAX_BUFFER, HAD_MAX_BUFFER);
|
|
|
|
if (retval)
|
|
|
|
goto err;
|
|
|
|
|
|
|
|
/* internal function call to register device with ALSA */
|
|
|
|
retval = snd_intelhad_create(intelhaddata, card);
|
|
|
|
if (retval)
|
|
|
|
goto err;
|
|
|
|
|
|
|
|
card->private_data = &intelhaddata;
|
|
|
|
retval = snd_card_register(card);
|
|
|
|
if (retval)
|
|
|
|
goto err;
|
|
|
|
|
|
|
|
/* IEC958 controls */
|
|
|
|
retval = snd_ctl_add(card, snd_ctl_new1(&had_control_iec958_mask,
|
|
|
|
intelhaddata));
|
|
|
|
if (retval < 0)
|
|
|
|
goto err;
|
|
|
|
retval = snd_ctl_add(card, snd_ctl_new1(&had_control_iec958,
|
|
|
|
intelhaddata));
|
|
|
|
if (retval < 0)
|
|
|
|
goto err;
|
|
|
|
|
|
|
|
init_channel_allocations();
|
|
|
|
|
|
|
|
/* Register channel map controls */
|
|
|
|
retval = had_register_chmap_ctls(intelhaddata, pcm);
|
|
|
|
if (retval < 0)
|
|
|
|
goto err;
|
|
|
|
|
|
|
|
intelhaddata->dev = &devptr->dev;
|
|
|
|
pm_runtime_set_active(intelhaddata->dev);
|
|
|
|
pm_runtime_enable(intelhaddata->dev);
|
|
|
|
|
2017-01-31 00:23:39 +08:00
|
|
|
*had_ret = intelhaddata;
|
2017-01-25 06:57:52 +08:00
|
|
|
|
2017-01-31 00:23:39 +08:00
|
|
|
return 0;
|
2017-01-25 06:57:52 +08:00
|
|
|
err:
|
|
|
|
snd_card_free(card);
|
|
|
|
free_hadstream:
|
|
|
|
kfree(had_stream);
|
|
|
|
pm_runtime_disable(intelhaddata->dev);
|
|
|
|
intelhaddata->dev = NULL;
|
|
|
|
free_haddata:
|
|
|
|
kfree(intelhaddata);
|
|
|
|
intelhaddata = NULL;
|
|
|
|
pr_err("Error returned from %s api %#x\n", __func__, retval);
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
2017-01-31 00:23:39 +08:00
|
|
|
/*
|
2017-01-25 06:57:52 +08:00
|
|
|
* hdmi_audio_remove - removes the alsa card
|
|
|
|
*
|
|
|
|
*@haddata: pointer to HAD private data
|
|
|
|
*
|
|
|
|
* This function is called when the hdmi cable is un-plugged. This function
|
|
|
|
* free the sound card.
|
|
|
|
*/
|
2017-01-31 00:23:39 +08:00
|
|
|
int hdmi_audio_remove(struct snd_intelhad *intelhaddata)
|
2017-01-25 06:57:52 +08:00
|
|
|
{
|
|
|
|
int caps;
|
|
|
|
|
|
|
|
pr_debug("Enter %s\n", __func__);
|
|
|
|
|
|
|
|
if (!intelhaddata)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
if (intelhaddata->drv_status != HAD_DRV_DISCONNECTED) {
|
|
|
|
caps = HDMI_AUDIO_UNDERRUN | HDMI_AUDIO_BUFFER_DONE;
|
2017-01-31 00:23:39 +08:00
|
|
|
had_set_caps(intelhaddata, HAD_SET_DISABLE_AUDIO_INT, &caps);
|
|
|
|
had_set_caps(intelhaddata, HAD_SET_DISABLE_AUDIO, NULL);
|
2017-01-25 06:57:52 +08:00
|
|
|
}
|
|
|
|
snd_card_free(intelhaddata->card);
|
|
|
|
kfree(intelhaddata->private_data);
|
|
|
|
kfree(intelhaddata);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
MODULE_AUTHOR("Sailaja Bandarupalli <sailaja.bandarupalli@intel.com>");
|
|
|
|
MODULE_AUTHOR("Ramesh Babu K V <ramesh.babu@intel.com>");
|
|
|
|
MODULE_AUTHOR("Vaibhav Agarwal <vaibhav.agarwal@intel.com>");
|
|
|
|
MODULE_AUTHOR("Jerome Anand <jerome.anand@intel.com>");
|
|
|
|
MODULE_DESCRIPTION("Intel HDMI Audio driver");
|
|
|
|
MODULE_LICENSE("GPL v2");
|
|
|
|
MODULE_SUPPORTED_DEVICE("{Intel,Intel_HAD}");
|