sound/soc/qcom/lpass-sc7180.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 2020, The Linux Foundation. All rights reserved.
   4  *
   5  * lpass-sc7180.c -- ALSA SoC platform-machine driver for QTi LPASS
   6  */
   7
   8 #include <linux/clk.h>
   9 #include <linux/device.h>
  10 #include <linux/err.h>
  11 #include <linux/kernel.h>
  12 #include <linux/module.h>
  13 #include <linux/of.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/pm.h>
  16 #include <dt-bindings/sound/sc7180-lpass.h>
  17 #include <sound/pcm.h>
  18 #include <sound/soc.h>
  19
  20 #include "lpass-lpaif-reg.h"
  21 #include "lpass.h"
  22
  23 static struct snd_soc_dai_driver sc7180_lpass_cpu_dai_driver[] = {
  24         {
  25                 .id = MI2S_PRIMARY,
  26                 .name = "Primary MI2S",
  27                 .playback = {
  28                         .stream_name = "Primary Playback",
  29                         .formats        = SNDRV_PCM_FMTBIT_S16,
  30                         .rates = SNDRV_PCM_RATE_48000,
  31                         .rate_min       = 48000,
  32                         .rate_max       = 48000,
  33                         .channels_min   = 2,
  34                         .channels_max   = 2,
  35                 },
  36                 .capture = {
  37                         .stream_name = "Primary Capture",
  38                         .formats = SNDRV_PCM_FMTBIT_S16 |
  39                                 SNDRV_PCM_FMTBIT_S32,
  40                         .rates = SNDRV_PCM_RATE_48000,
  41                         .rate_min       = 48000,
  42                         .rate_max       = 48000,
  43                         .channels_min   = 2,
  44                         .channels_max   = 2,
  45                 },
  46                 .ops    = &asoc_qcom_lpass_cpu_dai_ops,
  47         }, {
  48                 .id = MI2S_SECONDARY,
  49                 .name = "Secondary MI2S",
  50                 .playback = {
  51                         .stream_name = "Secondary Playback",
  52                         .formats        = SNDRV_PCM_FMTBIT_S16,
  53                         .rates = SNDRV_PCM_RATE_48000,
  54                         .rate_min       = 48000,
  55                         .rate_max       = 48000,
  56                         .channels_min   = 2,
  57                         .channels_max   = 2,
  58                 },
  59                 .ops    = &asoc_qcom_lpass_cpu_dai_ops2,
  60         }, {
  61                 .id = LPASS_DP_RX,
  62                 .name = "Hdmi",
  63                 .playback = {
  64                         .stream_name = "Hdmi Playback",
  65                         .formats        = SNDRV_PCM_FMTBIT_S24,
  66                         .rates = SNDRV_PCM_RATE_48000,
  67                         .rate_min       = 48000,
  68                         .rate_max       = 48000,
  69                         .channels_min   = 2,
  70                         .channels_max   = 2,
  71                 },
  72                 .ops    = &asoc_qcom_lpass_hdmi_dai_ops,
  73         },
  74 };
  75
  76 static int sc7180_lpass_alloc_dma_channel(struct lpass_data *drvdata,
  77                                            int direction, unsigned int dai_id)
  78 {
  79         const struct lpass_variant *v = drvdata->variant;
  80         int chan = 0;
  81
  82         if (dai_id == LPASS_DP_RX) {
  83                 if (direction == SNDRV_PCM_STREAM_PLAYBACK) {
  84                         chan = find_first_zero_bit(&drvdata->hdmi_dma_ch_bit_map,
  85                                                 v->hdmi_rdma_channels);
  86
  87                         if (chan >= v->hdmi_rdma_channels)
  88                                 return -EBUSY;
  89                 }
  90                 set_bit(chan, &drvdata->hdmi_dma_ch_bit_map);
  91         } else {
  92                 if (direction == SNDRV_PCM_STREAM_PLAYBACK) {
  93                         chan = find_first_zero_bit(&drvdata->dma_ch_bit_map,
  94                                                 v->rdma_channels);
  95
  96                         if (chan >= v->rdma_channels)
  97                                 return -EBUSY;
  98                 } else {
  99                         chan = find_next_zero_bit(&drvdata->dma_ch_bit_map,
 100                                         v->wrdma_channel_start +
 101                                         v->wrdma_channels,
 102                                         v->wrdma_channel_start);
 103
 104                         if (chan >=  v->wrdma_channel_start + v->wrdma_channels)
 105                                 return -EBUSY;
 106                 }
 107
 108                 set_bit(chan, &drvdata->dma_ch_bit_map);
 109         }
 110         return chan;
 111 }
 112
 113 static int sc7180_lpass_free_dma_channel(struct lpass_data *drvdata, int chan, unsigned int dai_id)
 114 {
 115         if (dai_id == LPASS_DP_RX)
 116                 clear_bit(chan, &drvdata->hdmi_dma_ch_bit_map);
 117         else
 118                 clear_bit(chan, &drvdata->dma_ch_bit_map);
 119
 120         return 0;
 121 }
 122
 123 static int sc7180_lpass_init(struct platform_device *pdev)
 124 {
 125         struct lpass_data *drvdata = platform_get_drvdata(pdev);
 126         const struct lpass_variant *variant = drvdata->variant;
 127         struct device *dev = &pdev->dev;
 128         int ret, i;
 129
 130         drvdata->clks = devm_kcalloc(dev, variant->num_clks,
 131                                      sizeof(*drvdata->clks), GFP_KERNEL);
 132         if (!drvdata->clks)
 133                 return -ENOMEM;
 134
 135         drvdata->num_clks = variant->num_clks;
 136
 137         for (i = 0; i < drvdata->num_clks; i++)
 138                 drvdata->clks[i].id = variant->clk_name[i];
 139
 140         ret = devm_clk_bulk_get(dev, drvdata->num_clks, drvdata->clks);
 141         if (ret) {
 142                 dev_err(dev, "Failed to get clocks %d\n", ret);
 143                 return ret;
 144         }
 145
 146         ret = clk_bulk_prepare_enable(drvdata->num_clks, drvdata->clks);
 147         if (ret) {
 148                 dev_err(dev, "sc7180 clk_enable failed\n");
 149                 return ret;
 150         }
 151
 152         return 0;
 153 }
 154
 155 static int sc7180_lpass_exit(struct platform_device *pdev)
 156 {
 157         struct lpass_data *drvdata = platform_get_drvdata(pdev);
 158
 159         clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);
 160         return 0;
 161 }
 162
 163 static int __maybe_unused sc7180_lpass_dev_resume(struct device *dev)
 164 {
 165         struct lpass_data *drvdata = dev_get_drvdata(dev);
 166
 167         return clk_bulk_prepare_enable(drvdata->num_clks, drvdata->clks);
 168 }
 169
 170 static int __maybe_unused sc7180_lpass_dev_suspend(struct device *dev)
 171 {
 172         struct lpass_data *drvdata = dev_get_drvdata(dev);
 173
 174         clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);
 175         return 0;
 176 }
 177
 178 static const struct dev_pm_ops sc7180_lpass_pm_ops = {
 179         SET_SYSTEM_SLEEP_PM_OPS(sc7180_lpass_dev_suspend, sc7180_lpass_dev_resume)
 180 };
 181
 182 static const struct lpass_variant sc7180_data = {
 183         .i2sctrl_reg_base       = 0x1000,
 184         .i2sctrl_reg_stride     = 0x1000,
 185         .i2s_ports              = 3,
 186         .irq_reg_base           = 0x9000,
 187         .irq_reg_stride         = 0x1000,
 188         .irq_ports              = 3,
 189         .rdma_reg_base          = 0xC000,
 190         .rdma_reg_stride        = 0x1000,
 191         .rdma_channels          = 5,
 192         .hdmi_rdma_reg_base             = 0x64000,
 193         .hdmi_rdma_reg_stride   = 0x1000,
 194         .hdmi_rdma_channels             = 4,
 195         .dmactl_audif_start     = 1,
 196         .wrdma_reg_base         = 0x18000,
 197         .wrdma_reg_stride       = 0x1000,
 198         .wrdma_channel_start    = 5,
 199         .wrdma_channels         = 4,
 200
 201         .loopback               = REG_FIELD_ID(0x1000, 17, 17, 3, 0x1000),
 202         .spken                  = REG_FIELD_ID(0x1000, 16, 16, 3, 0x1000),
 203         .spkmode                = REG_FIELD_ID(0x1000, 11, 15, 3, 0x1000),
 204         .spkmono                = REG_FIELD_ID(0x1000, 10, 10, 3, 0x1000),
 205         .micen                  = REG_FIELD_ID(0x1000, 9, 9, 3, 0x1000),
 206         .micmode                = REG_FIELD_ID(0x1000, 4, 8, 3, 0x1000),
 207         .micmono                = REG_FIELD_ID(0x1000, 3, 3, 3, 0x1000),
 208         .wssrc                  = REG_FIELD_ID(0x1000, 2, 2, 3, 0x1000),
 209         .bitwidth               = REG_FIELD_ID(0x1000, 0, 1, 3, 0x1000),
 210
 211         .rdma_dyncclk           = REG_FIELD_ID(0xC000, 21, 21, 5, 0x1000),
 212         .rdma_bursten           = REG_FIELD_ID(0xC000, 20, 20, 5, 0x1000),
 213         .rdma_wpscnt            = REG_FIELD_ID(0xC000, 16, 19, 5, 0x1000),
 214         .rdma_intf                      = REG_FIELD_ID(0xC000, 12, 15, 5, 0x1000),
 215         .rdma_fifowm            = REG_FIELD_ID(0xC000, 1, 5, 5, 0x1000),
 216         .rdma_enable            = REG_FIELD_ID(0xC000, 0, 0, 5, 0x1000),
 217
 218         .wrdma_dyncclk          = REG_FIELD_ID(0x18000, 22, 22, 4, 0x1000),
 219         .wrdma_bursten          = REG_FIELD_ID(0x18000, 21, 21, 4, 0x1000),
 220         .wrdma_wpscnt           = REG_FIELD_ID(0x18000, 17, 20, 4, 0x1000),
 221         .wrdma_intf             = REG_FIELD_ID(0x18000, 12, 16, 4, 0x1000),
 222         .wrdma_fifowm           = REG_FIELD_ID(0x18000, 1, 5, 4, 0x1000),
 223         .wrdma_enable           = REG_FIELD_ID(0x18000, 0, 0, 4, 0x1000),
 224
 225         .hdmi_tx_ctl_addr       = 0x1000,
 226         .hdmi_legacy_addr       = 0x1008,
 227         .hdmi_vbit_addr         = 0x610c0,
 228         .hdmi_ch_lsb_addr       = 0x61048,
 229         .hdmi_ch_msb_addr       = 0x6104c,
 230         .ch_stride              = 0x8,
 231         .hdmi_parity_addr       = 0x61034,
 232         .hdmi_dmactl_addr       = 0x61038,
 233         .hdmi_dma_stride        = 0x4,
 234         .hdmi_DP_addr           = 0x610c8,
 235         .hdmi_sstream_addr      = 0x6101c,
 236         .hdmi_irq_reg_base              = 0x63000,
 237         .hdmi_irq_ports         = 1,
 238
 239         .hdmi_rdma_dyncclk              = REG_FIELD_ID(0x64000, 14, 14, 4, 0x1000),
 240         .hdmi_rdma_bursten              = REG_FIELD_ID(0x64000, 13, 13, 4, 0x1000),
 241         .hdmi_rdma_burst8               = REG_FIELD_ID(0x64000, 15, 15, 4, 0x1000),
 242         .hdmi_rdma_burst16              = REG_FIELD_ID(0x64000, 16, 16, 4, 0x1000),
 243         .hdmi_rdma_dynburst             = REG_FIELD_ID(0x64000, 18, 18, 4, 0x1000),
 244         .hdmi_rdma_wpscnt               = REG_FIELD_ID(0x64000, 10, 12, 4, 0x1000),
 245         .hdmi_rdma_fifowm               = REG_FIELD_ID(0x64000, 1, 5, 4, 0x1000),
 246         .hdmi_rdma_enable               = REG_FIELD_ID(0x64000, 0, 0, 4, 0x1000),
 247
 248         .sstream_en             = REG_FIELD(0x6101c, 0, 0),
 249         .dma_sel                        = REG_FIELD(0x6101c, 1, 2),
 250         .auto_bbit_en   = REG_FIELD(0x6101c, 3, 3),
 251         .layout                 = REG_FIELD(0x6101c, 4, 4),
 252         .layout_sp              = REG_FIELD(0x6101c, 5, 8),
 253         .set_sp_on_en   = REG_FIELD(0x6101c, 10, 10),
 254         .dp_audio               = REG_FIELD(0x6101c, 11, 11),
 255         .dp_staffing_en = REG_FIELD(0x6101c, 12, 12),
 256         .dp_sp_b_hw_en  = REG_FIELD(0x6101c, 13, 13),
 257
 258         .mute                   = REG_FIELD(0x610c8, 0, 0),
 259         .as_sdp_cc              = REG_FIELD(0x610c8, 1, 3),
 260         .as_sdp_ct              = REG_FIELD(0x610c8, 4, 7),
 261         .aif_db4                        = REG_FIELD(0x610c8, 8, 15),
 262         .frequency              = REG_FIELD(0x610c8, 16, 21),
 263         .mst_index              = REG_FIELD(0x610c8, 28, 29),
 264         .dptx_index             = REG_FIELD(0x610c8, 30, 31),
 265
 266         .soft_reset             = REG_FIELD(0x1000, 31, 31),
 267         .force_reset    = REG_FIELD(0x1000, 30, 30),
 268
 269         .use_hw_chs             = REG_FIELD(0x61038, 0, 0),
 270         .use_hw_usr             = REG_FIELD(0x61038, 1, 1),
 271         .hw_chs_sel             = REG_FIELD(0x61038, 2, 4),
 272         .hw_usr_sel             = REG_FIELD(0x61038, 5, 6),
 273
 274         .replace_vbit   = REG_FIELD(0x610c0, 0, 0),
 275         .vbit_stream    = REG_FIELD(0x610c0, 1, 1),
 276
 277         .legacy_en              =  REG_FIELD(0x1008, 0, 0),
 278         .calc_en                =  REG_FIELD(0x61034, 0, 0),
 279         .lsb_bits               =  REG_FIELD(0x61048, 0, 31),
 280         .msb_bits               =  REG_FIELD(0x6104c, 0, 31),
 281
 282
 283         .clk_name               = (const char*[]) {
 284                                    "pcnoc-sway-clk",
 285                                    "audio-core",
 286                                    "pcnoc-mport-clk",
 287                                 },
 288         .num_clks               = 3,
 289         .dai_driver             = sc7180_lpass_cpu_dai_driver,
 290         .num_dai                = ARRAY_SIZE(sc7180_lpass_cpu_dai_driver),
 291         .dai_osr_clk_names      = (const char *[]) {
 292                                    "mclk0",
 293                                    "null",
 294                                 },
 295         .dai_bit_clk_names      = (const char *[]) {
 296                                    "mi2s-bit-clk0",
 297                                    "mi2s-bit-clk1",
 298                                 },
 299         .init                   = sc7180_lpass_init,
 300         .exit                   = sc7180_lpass_exit,
 301         .alloc_dma_channel      = sc7180_lpass_alloc_dma_channel,
 302         .free_dma_channel       = sc7180_lpass_free_dma_channel,
 303 };
 304
 305 static const struct of_device_id sc7180_lpass_cpu_device_id[] __maybe_unused = {
 306         {.compatible = "qcom,sc7180-lpass-cpu", .data = &sc7180_data},
 307         {}
 308 };
 309 MODULE_DEVICE_TABLE(of, sc7180_lpass_cpu_device_id);
 310
 311 static struct platform_driver sc7180_lpass_cpu_platform_driver = {
 312         .driver = {
 313                 .name = "sc7180-lpass-cpu",
 314                 .of_match_table = of_match_ptr(sc7180_lpass_cpu_device_id),
 315                 .pm = &sc7180_lpass_pm_ops,
 316         },
 317         .probe = asoc_qcom_lpass_cpu_platform_probe,
 318         .remove = asoc_qcom_lpass_cpu_platform_remove,
 319         .shutdown = asoc_qcom_lpass_cpu_platform_shutdown,
 320 };
 321
 322 module_platform_driver(sc7180_lpass_cpu_platform_driver);
 323
 324 MODULE_DESCRIPTION("SC7180 LPASS CPU DRIVER");
 325 MODULE_LICENSE("GPL");