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1// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)2//3// This file is provided under a dual BSD/GPLv2 license. When using or4// redistributing this file, you may do so under either license.5//6// Copyright(c) 2018 Intel Corporation7//8// Authors: Liam Girdwood <liam.r.girdwood@linux.intel.com>9// Ranjani Sridharan <ranjani.sridharan@linux.intel.com>10// Rander Wang <rander.wang@intel.com>11// Keyon Jie <yang.jie@linux.intel.com>12//13 14/*15 * Hardware interface for generic Intel audio DSP HDA IP16 */17 18#include <linux/moduleparam.h>19#include <sound/hda_register.h>20#include <sound/pcm_params.h>21#include <trace/events/sof_intel.h>22#include "../sof-audio.h"23#include "../ops.h"24#include "hda.h"25 26#define SDnFMT_BASE(x) ((x) << 14)27#define SDnFMT_MULT(x) (((x) - 1) << 11)28#define SDnFMT_DIV(x) (((x) - 1) << 8)29#define SDnFMT_BITS(x) ((x) << 4)30#define SDnFMT_CHAN(x) ((x) << 0)31 32static bool hda_always_enable_dmi_l1;33module_param_named(always_enable_dmi_l1, hda_always_enable_dmi_l1, bool, 0444);34MODULE_PARM_DESC(always_enable_dmi_l1, "SOF HDA always enable DMI l1");35 36static bool hda_disable_rewinds;37module_param_named(disable_rewinds, hda_disable_rewinds, bool, 0444);38MODULE_PARM_DESC(disable_rewinds, "SOF HDA disable rewinds");39 40u32 hda_dsp_get_mult_div(struct snd_sof_dev *sdev, int rate)41{42 switch (rate) {43 case 8000:44 return SDnFMT_DIV(6);45 case 9600:46 return SDnFMT_DIV(5);47 case 11025:48 return SDnFMT_BASE(1) | SDnFMT_DIV(4);49 case 16000:50 return SDnFMT_DIV(3);51 case 22050:52 return SDnFMT_BASE(1) | SDnFMT_DIV(2);53 case 32000:54 return SDnFMT_DIV(3) | SDnFMT_MULT(2);55 case 44100:56 return SDnFMT_BASE(1);57 case 48000:58 return 0;59 case 88200:60 return SDnFMT_BASE(1) | SDnFMT_MULT(2);61 case 96000:62 return SDnFMT_MULT(2);63 case 176400:64 return SDnFMT_BASE(1) | SDnFMT_MULT(4);65 case 192000:66 return SDnFMT_MULT(4);67 default:68 dev_warn(sdev->dev, "can't find div rate %d using 48kHz\n",69 rate);70 return 0; /* use 48KHz if not found */71 }72};73 74u32 hda_dsp_get_bits(struct snd_sof_dev *sdev, int sample_bits)75{76 switch (sample_bits) {77 case 8:78 return SDnFMT_BITS(0);79 case 16:80 return SDnFMT_BITS(1);81 case 20:82 return SDnFMT_BITS(2);83 case 24:84 return SDnFMT_BITS(3);85 case 32:86 return SDnFMT_BITS(4);87 default:88 dev_warn(sdev->dev, "can't find %d bits using 16bit\n",89 sample_bits);90 return SDnFMT_BITS(1); /* use 16bits format if not found */91 }92};93 94int hda_dsp_pcm_hw_params(struct snd_sof_dev *sdev,95 struct snd_pcm_substream *substream,96 struct snd_pcm_hw_params *params,97 struct snd_sof_platform_stream_params *platform_params)98{99 struct hdac_stream *hstream = substream->runtime->private_data;100 struct hdac_ext_stream *hext_stream = stream_to_hdac_ext_stream(hstream);101 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;102 struct snd_dma_buffer *dmab;103 int ret;104 105 hstream->substream = substream;106 107 dmab = substream->runtime->dma_buffer_p;108 109 /*110 * Use the codec required format val (which is link_bps adjusted) when111 * the DSP is not in use112 */113 if (!sdev->dspless_mode_selected) {114 u32 rate = hda_dsp_get_mult_div(sdev, params_rate(params));115 u32 bits = hda_dsp_get_bits(sdev, params_width(params));116 117 hstream->format_val = rate | bits | (params_channels(params) - 1);118 }119 120 hstream->bufsize = params_buffer_bytes(params);121 hstream->period_bytes = params_period_bytes(params);122 hstream->no_period_wakeup =123 (params->info & SNDRV_PCM_INFO_NO_PERIOD_WAKEUP) &&124 (params->flags & SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP);125 126 ret = hda_dsp_stream_hw_params(sdev, hext_stream, dmab, params);127 if (ret < 0) {128 dev_err(sdev->dev, "error: hdac prepare failed: %d\n", ret);129 return ret;130 }131 132 /* enable SPIB when rewinds are disabled */133 if (hda_disable_rewinds)134 hda_dsp_stream_spib_config(sdev, hext_stream, HDA_DSP_SPIB_ENABLE, 0);135 else136 hda_dsp_stream_spib_config(sdev, hext_stream, HDA_DSP_SPIB_DISABLE, 0);137 138 if (hda)139 platform_params->no_ipc_position = hda->no_ipc_position;140 141 platform_params->stream_tag = hstream->stream_tag;142 143 return 0;144}145EXPORT_SYMBOL_NS(hda_dsp_pcm_hw_params, SND_SOC_SOF_INTEL_HDA_COMMON);146 147/* update SPIB register with appl position */148int hda_dsp_pcm_ack(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream)149{150 struct hdac_stream *hstream = substream->runtime->private_data;151 struct snd_pcm_runtime *runtime = substream->runtime;152 ssize_t appl_pos, buf_size;153 u32 spib;154 155 appl_pos = frames_to_bytes(runtime, runtime->control->appl_ptr);156 buf_size = frames_to_bytes(runtime, runtime->buffer_size);157 158 spib = appl_pos % buf_size;159 160 /* Allowable value for SPIB is 1 byte to max buffer size */161 if (!spib)162 spib = buf_size;163 164 sof_io_write(sdev, hstream->spib_addr, spib);165 166 return 0;167}168EXPORT_SYMBOL_NS(hda_dsp_pcm_ack, SND_SOC_SOF_INTEL_HDA_COMMON);169 170int hda_dsp_pcm_trigger(struct snd_sof_dev *sdev,171 struct snd_pcm_substream *substream, int cmd)172{173 struct hdac_stream *hstream = substream->runtime->private_data;174 struct hdac_ext_stream *hext_stream = stream_to_hdac_ext_stream(hstream);175 176 return hda_dsp_stream_trigger(sdev, hext_stream, cmd);177}178EXPORT_SYMBOL_NS(hda_dsp_pcm_trigger, SND_SOC_SOF_INTEL_HDA_COMMON);179 180snd_pcm_uframes_t hda_dsp_pcm_pointer(struct snd_sof_dev *sdev,181 struct snd_pcm_substream *substream)182{183 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);184 struct snd_soc_component *scomp = sdev->component;185 struct hdac_stream *hstream = substream->runtime->private_data;186 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;187 struct snd_sof_pcm *spcm;188 snd_pcm_uframes_t pos;189 190 spcm = snd_sof_find_spcm_dai(scomp, rtd);191 if (!spcm) {192 dev_warn_ratelimited(sdev->dev, "warn: can't find PCM with DAI ID %d\n",193 rtd->dai_link->id);194 return 0;195 }196 197 if (hda && !hda->no_ipc_position) {198 /* read position from IPC position */199 pos = spcm->stream[substream->stream].posn.host_posn;200 goto found;201 }202 203 pos = hda_dsp_stream_get_position(hstream, substream->stream, true);204found:205 pos = bytes_to_frames(substream->runtime, pos);206 207 trace_sof_intel_hda_dsp_pcm(sdev, hstream, substream, pos);208 return pos;209}210EXPORT_SYMBOL_NS(hda_dsp_pcm_pointer, SND_SOC_SOF_INTEL_HDA_COMMON);211 212int hda_dsp_pcm_open(struct snd_sof_dev *sdev,213 struct snd_pcm_substream *substream)214{215 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);216 struct snd_pcm_runtime *runtime = substream->runtime;217 struct snd_soc_component *scomp = sdev->component;218 struct hdac_ext_stream *dsp_stream;219 struct snd_sof_pcm *spcm;220 int direction = substream->stream;221 u32 flags = 0;222 223 spcm = snd_sof_find_spcm_dai(scomp, rtd);224 if (!spcm) {225 dev_err(sdev->dev, "error: can't find PCM with DAI ID %d\n", rtd->dai_link->id);226 return -EINVAL;227 }228 229 /*230 * if we want the .ack to work, we need to prevent the control from being mapped.231 * The status can still be mapped.232 */233 if (hda_disable_rewinds)234 runtime->hw.info |= SNDRV_PCM_INFO_NO_REWINDS | SNDRV_PCM_INFO_SYNC_APPLPTR;235 236 /*237 * All playback streams are DMI L1 capable, capture streams need238 * pause push/release to be disabled239 */240 if (hda_always_enable_dmi_l1 && direction == SNDRV_PCM_STREAM_CAPTURE)241 runtime->hw.info &= ~SNDRV_PCM_INFO_PAUSE;242 243 if (hda_always_enable_dmi_l1 ||244 direction == SNDRV_PCM_STREAM_PLAYBACK ||245 spcm->stream[substream->stream].d0i3_compatible)246 flags |= SOF_HDA_STREAM_DMI_L1_COMPATIBLE;247 248 dsp_stream = hda_dsp_stream_get(sdev, direction, flags);249 if (!dsp_stream) {250 dev_err(sdev->dev, "error: no stream available\n");251 return -ENODEV;252 }253 254 /* minimum as per HDA spec */255 snd_pcm_hw_constraint_step(substream->runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 4);256 257 /* avoid circular buffer wrap in middle of period */258 snd_pcm_hw_constraint_integer(substream->runtime,259 SNDRV_PCM_HW_PARAM_PERIODS);260 261 /* Limit the maximum number of periods to not exceed the BDL entries count */262 if (runtime->hw.periods_max > HDA_DSP_MAX_BDL_ENTRIES)263 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIODS,264 runtime->hw.periods_min,265 HDA_DSP_MAX_BDL_ENTRIES);266 267 /* Only S16 and S32 supported by HDA hardware when used without DSP */268 if (sdev->dspless_mode_selected)269 snd_pcm_hw_constraint_mask64(substream->runtime, SNDRV_PCM_HW_PARAM_FORMAT,270 SNDRV_PCM_FMTBIT_S16 | SNDRV_PCM_FMTBIT_S32);271 272 /*273 * The dsp_max_burst_size_in_ms is the length of the maximum burst size274 * of the host DMA in the ALSA buffer.275 *276 * On playback start the DMA will transfer dsp_max_burst_size_in_ms277 * amount of data in one initial burst to fill up the host DMA buffer.278 * Consequent DMA burst sizes are shorter and their length can vary.279 * To make sure that userspace allocate large enough ALSA buffer we need280 * to place a constraint on the buffer time.281 *282 * On capture the DMA will transfer 1ms chunks.283 *284 * Exact dsp_max_burst_size_in_ms constraint is racy, so set the285 * constraint to a minimum of 2x dsp_max_burst_size_in_ms.286 */287 if (spcm->stream[direction].dsp_max_burst_size_in_ms)288 snd_pcm_hw_constraint_minmax(substream->runtime,289 SNDRV_PCM_HW_PARAM_BUFFER_TIME,290 spcm->stream[direction].dsp_max_burst_size_in_ms * USEC_PER_MSEC * 2,291 UINT_MAX);292 293 /* binding pcm substream to hda stream */294 substream->runtime->private_data = &dsp_stream->hstream;295 296 /*297 * Reset the llp cache values (they are used for LLP compensation in298 * case the counter is not reset)299 */300 dsp_stream->pplcllpl = 0;301 dsp_stream->pplcllpu = 0;302 303 return 0;304}305EXPORT_SYMBOL_NS(hda_dsp_pcm_open, SND_SOC_SOF_INTEL_HDA_COMMON);306 307int hda_dsp_pcm_close(struct snd_sof_dev *sdev,308 struct snd_pcm_substream *substream)309{310 struct hdac_stream *hstream = substream->runtime->private_data;311 int direction = substream->stream;312 int ret;313 314 ret = hda_dsp_stream_put(sdev, direction, hstream->stream_tag);315 316 if (ret) {317 dev_dbg(sdev->dev, "stream %s not opened!\n", substream->name);318 return -ENODEV;319 }320 321 /* unbinding pcm substream to hda stream */322 substream->runtime->private_data = NULL;323 return 0;324}325EXPORT_SYMBOL_NS(hda_dsp_pcm_close, SND_SOC_SOF_INTEL_HDA_COMMON);326