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 or 4 // redistributing this file, you may do so under either license. 5 // 6 // Copyright(c) 2018 Intel Corporation. All rights reserved. 7 // 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 IP 16 */ 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 32 static bool hda_always_enable_dmi_l1; 33 module_param_named(always_enable_dmi_l1, hda_always_enable_dmi_l1, bool, 0444); 34 MODULE_PARM_DESC(always_enable_dmi_l1, "SOF HDA always enable DMI l1"); 35 36 static bool hda_disable_rewinds = IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_DISABLE_REWINDS); 37 module_param_named(disable_rewinds, hda_disable_rewinds, bool, 0444); 38 MODULE_PARM_DESC(disable_rewinds, "SOF HDA disable rewinds"); 39 40 u32 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 74 u32 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 94 int 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 u32 size, rate, bits; 105 106 size = params_buffer_bytes(params); 107 rate = hda_dsp_get_mult_div(sdev, params_rate(params)); 108 bits = hda_dsp_get_bits(sdev, params_width(params)); 109 110 hstream->substream = substream; 111 112 dmab = substream->runtime->dma_buffer_p; 113 114 hstream->format_val = rate | bits | (params_channels(params) - 1); 115 hstream->bufsize = size; 116 hstream->period_bytes = params_period_bytes(params); 117 hstream->no_period_wakeup = 118 (params->info & SNDRV_PCM_INFO_NO_PERIOD_WAKEUP) && 119 (params->flags & SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP); 120 121 ret = hda_dsp_stream_hw_params(sdev, hext_stream, dmab, params); 122 if (ret < 0) { 123 dev_err(sdev->dev, "error: hdac prepare failed: %d\n", ret); 124 return ret; 125 } 126 127 /* enable SPIB when rewinds are disabled */ 128 if (hda_disable_rewinds) 129 hda_dsp_stream_spib_config(sdev, hext_stream, HDA_DSP_SPIB_ENABLE, 0); 130 else 131 hda_dsp_stream_spib_config(sdev, hext_stream, HDA_DSP_SPIB_DISABLE, 0); 132 133 if (hda) 134 platform_params->no_ipc_position = hda->no_ipc_position; 135 136 platform_params->stream_tag = hstream->stream_tag; 137 138 return 0; 139 } 140 141 /* update SPIB register with appl position */ 142 int hda_dsp_pcm_ack(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream) 143 { 144 struct hdac_stream *hstream = substream->runtime->private_data; 145 struct snd_pcm_runtime *runtime = substream->runtime; 146 ssize_t appl_pos, buf_size; 147 u32 spib; 148 149 appl_pos = frames_to_bytes(runtime, runtime->control->appl_ptr); 150 buf_size = frames_to_bytes(runtime, runtime->buffer_size); 151 152 spib = appl_pos % buf_size; 153 154 /* Allowable value for SPIB is 1 byte to max buffer size */ 155 if (!spib) 156 spib = buf_size; 157 158 sof_io_write(sdev, hstream->spib_addr, spib); 159 160 return 0; 161 } 162 163 int hda_dsp_pcm_trigger(struct snd_sof_dev *sdev, 164 struct snd_pcm_substream *substream, int cmd) 165 { 166 struct hdac_stream *hstream = substream->runtime->private_data; 167 struct hdac_ext_stream *hext_stream = stream_to_hdac_ext_stream(hstream); 168 169 return hda_dsp_stream_trigger(sdev, hext_stream, cmd); 170 } 171 172 snd_pcm_uframes_t hda_dsp_pcm_pointer(struct snd_sof_dev *sdev, 173 struct snd_pcm_substream *substream) 174 { 175 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 176 struct snd_soc_component *scomp = sdev->component; 177 struct hdac_stream *hstream = substream->runtime->private_data; 178 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata; 179 struct snd_sof_pcm *spcm; 180 snd_pcm_uframes_t pos; 181 182 spcm = snd_sof_find_spcm_dai(scomp, rtd); 183 if (!spcm) { 184 dev_warn_ratelimited(sdev->dev, "warn: can't find PCM with DAI ID %d\n", 185 rtd->dai_link->id); 186 return 0; 187 } 188 189 if (hda && !hda->no_ipc_position) { 190 /* read position from IPC position */ 191 pos = spcm->stream[substream->stream].posn.host_posn; 192 goto found; 193 } 194 195 pos = hda_dsp_stream_get_position(hstream, substream->stream, true); 196 found: 197 pos = bytes_to_frames(substream->runtime, pos); 198 199 trace_sof_intel_hda_dsp_pcm(sdev, hstream, substream, pos); 200 return pos; 201 } 202 203 int hda_dsp_pcm_open(struct snd_sof_dev *sdev, 204 struct snd_pcm_substream *substream) 205 { 206 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 207 struct snd_pcm_runtime *runtime = substream->runtime; 208 struct snd_soc_component *scomp = sdev->component; 209 struct hdac_ext_stream *dsp_stream; 210 struct snd_sof_pcm *spcm; 211 int direction = substream->stream; 212 u32 flags = 0; 213 214 spcm = snd_sof_find_spcm_dai(scomp, rtd); 215 if (!spcm) { 216 dev_err(sdev->dev, "error: can't find PCM with DAI ID %d\n", rtd->dai_link->id); 217 return -EINVAL; 218 } 219 220 /* 221 * if we want the .ack to work, we need to prevent the control from being mapped. 222 * The status can still be mapped. 223 */ 224 if (hda_disable_rewinds) 225 runtime->hw.info |= SNDRV_PCM_INFO_NO_REWINDS | SNDRV_PCM_INFO_SYNC_APPLPTR; 226 227 /* 228 * All playback streams are DMI L1 capable, capture streams need 229 * pause push/release to be disabled 230 */ 231 if (hda_always_enable_dmi_l1 && direction == SNDRV_PCM_STREAM_CAPTURE) 232 runtime->hw.info &= ~SNDRV_PCM_INFO_PAUSE; 233 234 if (hda_always_enable_dmi_l1 || 235 direction == SNDRV_PCM_STREAM_PLAYBACK || 236 spcm->stream[substream->stream].d0i3_compatible) 237 flags |= SOF_HDA_STREAM_DMI_L1_COMPATIBLE; 238 239 dsp_stream = hda_dsp_stream_get(sdev, direction, flags); 240 if (!dsp_stream) { 241 dev_err(sdev->dev, "error: no stream available\n"); 242 return -ENODEV; 243 } 244 245 /* minimum as per HDA spec */ 246 snd_pcm_hw_constraint_step(substream->runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 4); 247 248 /* avoid circular buffer wrap in middle of period */ 249 snd_pcm_hw_constraint_integer(substream->runtime, 250 SNDRV_PCM_HW_PARAM_PERIODS); 251 252 /* binding pcm substream to hda stream */ 253 substream->runtime->private_data = &dsp_stream->hstream; 254 return 0; 255 } 256 257 int hda_dsp_pcm_close(struct snd_sof_dev *sdev, 258 struct snd_pcm_substream *substream) 259 { 260 struct hdac_stream *hstream = substream->runtime->private_data; 261 int direction = substream->stream; 262 int ret; 263 264 ret = hda_dsp_stream_put(sdev, direction, hstream->stream_tag); 265 266 if (ret) { 267 dev_dbg(sdev->dev, "stream %s not opened!\n", substream->name); 268 return -ENODEV; 269 } 270 271 /* unbinding pcm substream to hda stream */ 272 substream->runtime->private_data = NULL; 273 return 0; 274 } 275